US20110155271A1 - Mechanical component having at least one fluid transport circuit - Google Patents
Mechanical component having at least one fluid transport circuit Download PDFInfo
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- US20110155271A1 US20110155271A1 US12/932,656 US93265611A US2011155271A1 US 20110155271 A1 US20110155271 A1 US 20110155271A1 US 93265611 A US93265611 A US 93265611A US 2011155271 A1 US2011155271 A1 US 2011155271A1
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- mold
- strata
- fluid transport
- circuit
- manufactured
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/02—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means
- B29C33/04—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means using liquids, gas or steam
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/24—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass dies
- B23P15/246—Laminated dies
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/30—Mounting, exchanging or centering
- B29C33/301—Modular mould systems [MMS], i.e. moulds built up by stacking mould elements, e.g. plates, blocks, rods
- B29C33/302—Assembling a large number of mould elements to constitute one cavity
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/10—Processes of additive manufacturing
- B29C64/141—Processes of additive manufacturing using only solid materials
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/10—Processes of additive manufacturing
- B29C64/141—Processes of additive manufacturing using only solid materials
- B29C64/147—Processes of additive manufacturing using only solid materials using sheet material, e.g. laminated object manufacturing [LOM] or laminating sheet material precut to local cross sections of the 3D object
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
- G05B19/4097—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by using design data to control NC machines, e.g. CAD/CAM
- G05B19/4099—Surface or curve machining, making 3D objects, e.g. desktop manufacturing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/02—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means
- B29C2033/023—Thermal insulation of moulds or mould parts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
- B29C33/3835—Designing moulds, e.g. using CAD-CAM
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/72—Heating or cooling
- B29C45/73—Heating or cooling of the mould
- B29C45/7312—Construction of heating or cooling fluid flow channels
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/757—Moulds, cores, dies
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/49—Nc machine tool, till multiple
- G05B2219/49011—Machine 2-D slices, build 3-D model, laminated object manufacturing LOM
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/8593—Systems
- Y10T137/87249—Multiple inlet with multiple outlet
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49826—Assembling or joining
- Y10T29/49885—Assembling or joining with coating before or during assembling
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49826—Assembling or joining
- Y10T29/49895—Associating parts by use of aligning means [e.g., use of a drift pin or a "fixture"]
Abstract
A mechanical part useful in various fields of application including plastic and metal processing is produced using a computer-aided design process including a preliminary break-down of the body of the part into elementary strata, followed by manufacture of the elementary strata, and reconstruction of the part. During break-down of the part, at least one fluid transport circuit, which is designed and modeled beforehand, is broken down into elementary chambers (20) in accordance with the break-down of the part. The elementary chambers are produced in the elementary strata (7 i) forming the part during manufacture of the strata, and the fluid transport circuit is reconstructed during superposition and assembly of the strata.
Description
- This is a continuation of U.S. patent application Ser. No. 10/530,504, having an assigned filing date of Apr. 6, 2005, which was filed as the National Stage of International Application No. PCT/FR2003/002224, having an International Filing Date of Jul. 15, 2003, and which claims the priority of French Patent Application No. FR 02 12389, filed Oct. 7, 2002. The subject matter of U.S. patent application Ser. No. 10/530,504 and International Application No. PCT/FR2003/002224 is incorporated by reference as if fully set forth herein.
- The present invention relates to a mechanical part that includes at least one circuit for containing a fluid, and to a method for producing such a part.
- The present invention is applicable to a broad range of fields such as, for example, mechanical engineering (for example, for the manufacture of cylinder heads), printing (for the production of ink-marking circuits), or other fields. In addition, the present invention preferably, but not exclusively, applies to the field of plastics processing, and more particularly, to the problems posed by the thermal regulation of molding tools (dies or punches).
- The thermal regulation of an injection molding tool has the function of extracting thermal energy provided by the molten thermoplastic to the outside of the tool. Such energy is imparted to the thermoplastic by the plasticating screw to allow the thermoplastic to conform to the impression being made. Such energy must then be removed from the thermoplastic so the part can be ejected (without any “distortion” of the molding impression). Such extraction takes place under conditions defined beforehand, during the design of the part and of the tool.
- The solution most commonly used to carry out the function of cooling and regulating molding tools is to produce a series of channels in the body of the tool, through which a heat-transfer fluid can circulate. The nature of the fluid depends on the desired average temperature in the tool.
- To obtain optimally effective regulating channels, it is necessary for the channels to be able to form a layer facing the part, or which exactly follow the shape of the part, and for such channels to be separated from the part by as thin a wall as possible. In practice, this solution could not be achieved, both for technical reasons and because of the high mechanical stresses generated by the injection molding process.
- A similar solution is sometimes obtained by a system of channels having a square cross section, and that approximately follow the shape of the part. This solution is used in special cases and is known to be used only on simple geometrical shapes (mainly on cylindrical punches). Such a solution gives rise to the problem of sealing between the attached parts, resulting in substantial delays and manufacturing costs.
- Such channels are most often produced by drilling, which is the least effective but simplest solution. Since the holes can be drilled only in a straight line, an entire series of drilling operations is necessary in order to follow the impression as closely as possible. The circuit is then formed by using fluid-tight plugs, or even by using external bridging arrangements for difficult cases, which are best avoided to the extent possible due to the risk that the resulting circuits can be crushed or broken while the mold is being handled.
- Insufficient cooling can result either due to geometrical precision problems or excessively long cycle times. In the worst cases, this can cause production shutdowns, during which the mold is left open to be regulated by natural convection.
- Despite all of these risks of malfunction, this aspect of the tool is often neglected when designing molds for injection molding. The regulating system is very often designed as the last item, and must be placed between the various ejectors, the guiding column, etc. This has been found to be erroneous because this function is the keystone of the injection molding process. The conditions for cooling the part play an essential role in the level of internal stresses in the injection-molded parts and in the crystallinity of the polymer, and therefore, in the aging stability and the mechanical properties of the parts. Consequently, production of the cooling/regulating channels currently represents a major challenge in improving performance in plastics processing.
- One solution which has been proposed is disclosed in an article in the journal “Emballages Magazine” entitled “How to Optimize the Molding of Plastics” (January-February 2002, supplement No. 605). The disclosed solution entails the production of a first, prototype mold, the behavior of which is observed and recorded during cooling. A computer then analyzes the data and deduces the dimensions and the positions of pins intended to improve heat exchange. This method leads to the construction of a second mold which is more effective than the first mold, and which includes a set of pins placed in accordance with a design established by the computer. Such a solution is time-consuming and requires prior experimentation.
- Another solution which has been proposed is disclosed in International Publication No. WO 02/22341. The disclosed solution places a tubular insert provided with radially disposed pins inside a parison, in order to increase the heat exchange. The application of this solution is limited, and complicated to implement.
- The object of the present invention is to alleviate the aforementioned drawbacks of the prior art and to provide an entirely novel method for designing and manufacturing the tool and its fluid transport circuit.
- In accordance with the present invention, the tool and its fluid transport circuit are designed and manufactured in a fully optimized manner, and in accordance with the requirements of the part to be produced, using the process known by the trademark “STRATOCONCEPTION” which is disclosed in European Patent No. 0 585 502, and improvements of which are disclosed in French Patent Publications No. FR 2,789,188, FR 2,789,187, FR 2,808,896, FR 2,809,040 and in French Patent Application No. FR 02/80514, the contents of which are fully incorporated by reference as if fully set forth herein.
- In general, the “STRATOCONCEPTION” process relates to a method for producing a mechanical part based on a computer-aided design. In a preliminary step, the body of the part is broken down into elementary strata. The elementary strata are then manufactured, followed by reconstruction of the part in its entirety by superposing and assembling the manufactured strata.
- During break-down of the part, at least one fluid transport circuit is broken down into elementary chambers in accordance with the break-down associated with that of the part. The fluid transport circuit is designed and modeled beforehand, and the elementary chambers are produced in the elementary strata of the part during manufacture of the strata. The fluid transport circuit is then reconstructed, in its entirety, during superposition and assembly of the strata.
- As an alternative, and during break-down of the part, an additional isolating circuit can be broken down into elementary isolating chambers in accordance with the break-down associated with that of the part. The elementary isolating chambers are produced in the elementary strata of the part during manufacture of the strata. The isolating circuit is then reconstructed during superposition and assembly of the set of strata.
- Further in accordance with the present invention, a mechanical part is provided which is comprised of a body with at least one fluid transport circuit. The fluid transport circuit is, for example, comprised of channels produced in the body and at a predetermined distance from a heat exchange surface. The circuit is produced by the above-described methods, and is reconstructed in its entirety during assembly of the strata, based on a succession of elementary chambers that are brought into communication in a fluid-tight manner and that are provided in at least one portion of the strata. The fluid transport circuit is preferably filled with a fluid selected from the group of fluids including a heat exchange fluid, a thermal insulation fluid, a liquid or pulverulent material, and a marking fluid.
- In some embodiments, and after reconstruction, the circuit forms a set of channels in the body of the part which are preferably parallel and which follow or copy a molding surface at a predetermined distance from the molding surface. In other embodiments, and after reconstruction, the circuit forms a layer-shaped chamber in the body of the part. The circuit preferably includes a connection to a regulating device.
- As a further alternative, the part can further include an additional isolating circuit, which is also reconstructed in its entirety during assembly of the strata. The additional isolating circuit is based on a succession of elementary chambers that are brought into communication in a fluid-tight manner, and are provided in at least one portion of the strata.
- Further description of the present invention is given below, with reference to the following drawings.
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FIG. 1 is a three-dimensional view of a mold with prior art cooling channels. -
FIG. 1 a is a vertical section of the mold ofFIG. 1 . -
FIGS. 2 a and 2 b illustrate the principle of breaking down the mold ofFIG. 1 a into unitary cells. -
FIG. 3 is a three-dimensional view of a mold which has been stratified, in accordance with the present invention, and which includes follower-axis channels for the circulation of a regulating fluid that follows the shape of the molding surface. -
FIGS. 3 a and 3 b are vertical sections of the mold ofFIG. 3 , and its break-down into unitary cells. -
FIG. 4 is a three-dimensional view of a mold which has been stratified, in accordance with the present invention, and which includes follower-surface channels for fluid circulation. -
FIGS. 4 a and 4 b are vertical sections of the mold ofFIG. 4 , and its break-down into unitary cells. -
FIG. 5 is a three-dimensional view of a mold which has been stratified, in accordance with the present invention, and which includes a follower layer for the circulation of a regulating fluid which follows or copies the shape of the molding surface. -
FIG. 5 a is a vertical section of the mold ofFIG. 5 . -
FIG. 6 is a nonlimiting representation of the follower layer. -
FIGS. 7 a and 7 b are representations of two successive strata defining the follower layer ofFIG. 6 . -
FIG. 8 is a partial, nonlimiting representation of a stratum that includes fins for producing a laminar effect in the follower layer. -
FIG. 9 is a partial, nonlimiting representation of a stratum that includes fins for producing a turbulent effect in the follower layer. -
FIG. 10 is a representation of a unitary thermal cell of a regulating follower layer. -
FIG. 11 is a schematic section of a mold which has been stratified in accordance with the present invention, and which includes isolating follower channels. -
FIG. 12 is a schematic section of a mold which has been stratified in accordance with the present invention, and which includes an isolating follower layer. -
FIG. 13 is a diagram of a method of filling the isolating layer or channels. -
FIG. 14 is a diagram of a dynamic regulating device in accordance with the present invention. -
FIG. 1 shows the conventional principle of cooling a mold (1). Several regulating channels (2) are produced by drilling and/or by the use of plugs, to form a three-dimensional network of regulating channels (2). The regulating channels (2) are parallel to the molding surface (3) of the mold (1), which is shown inFIG. 1 a, after the molding tool has been manufactured. The regulating channels (2) are placed at locations that are generally defined empirically by the mold designer. -
FIGS. 2 a and 2 b schematically show the basic concept of the present invention. In accordance with the present invention, and to make it easier to space the channels and to determine their dimensions, the region of the mold which surrounds the molding surface (3) which will be in contact with the material to be molded and which will consequently be subjected to heating and cooling stresses during production of the part, is broken down into elementary cells (4) over a given thickness. For ease of understanding,FIGS. 2 a and 2 b schematically show such a break-down into unitary thermal cells for the conventional mold shown inFIG. 1 . The break-down shown inFIGS. 2 a and 2 b is only one of the break-downs that can be employed to facilitate the determination of the dimensions of the channels. - In accordance with the present inventive concept, each cell is determined so that the cell is traversed by at most one regulating channel. The positions and the dimensions of the channels which are thereafter calculated will depend on the thermal stresses that the affected region of the mold will have to undergo during the various operations for producing the part (molding, blowing, cooling, demolding, etc.).
- The foregoing inventive concept for designing and producing optimized regulating channels is performed using the “STRATOCONCEPTION” process previously referred to. The design of the channels derives from prior modeling, in terms of unitary thermal cells, but this is not to be taken as limiting. As an example, a unitary cell (22) (see
FIG. 10 ) is formed, over a given thickness, from a part of the mold (22′) in contact on one of its faces with the polymer to be cooled, from a part of this polymer (33), and from a unitary chamber (15) in which the fluid circulates. -
FIGS. 3 , 3 a and 3 b show a first application of the foregoing basic principles to a stratified mold produced using the “STRATOCONCEPTION” process (or one of its improvements). In this application, the mold (1) is produced using software that breaks the mold down into elementary strata (7). The strata (7) are produced by micromilling a plate. The strata (7) are then joined together by superposing the strata so that one of the inter-stratum planes of the stratum (7 i) is applied against one of the inter-stratum planes of the next stratum (7 i+1). - In accordance with the present invention, each stratum in regions of the mold concerned with heat exchange is calculated to include a regulating channel (2) that emerges in one of the inter-stratum planes (either the upper plane of a stratum or the lower plane of a stratum). The requirements of the part, for example, the cycle time, the characteristics of the material, etc., will dictate the dimensions of the channels (2). The channels are dimensioned or designed beforehand, according to the requirements of the application, and are produced by micromilling during production of the strata. The channels (2) are then reconstructed in their entirety upon assembly of the strata.
- The embodiment shown in
FIGS. 3 a and 3 b includes at least one channel (2) of square cross-section in the stratum, or in the strata (7) of the mold region in question. The channel has a plane bottom (8) parallel to the inter-stratum plane, and two side walls (9, 10) perpendicular to the inter-stratum plane (5 or 6) from which the channel (2) emerges. Such an embodiment is referred to as a “follower axis” embodiment because the longitudinal axis (11) of the channel is located at a predetermined distance (d) from the molding surface (3). Such an embodiment makes it easier to cut the channel (2) in a stratum (7) of the series (7 i, with i from 1 to n), by laser or by water-jet micromilling. Providing a cross-section with a square or rectangular base also improves the heat exchange compared with a circular cross-section. - The embodiment shown in
FIGS. 4 , 4 a and 4 b includes a channel (2), at least one of the side walls (13, 14) of which is shaped to reproduce or copy a portion of the molding surface (3). Such an embodiment is referred to as a “follower surface” embodiment because all the points on the follower side wall (for example, the wall (14) shown) are located at a distance (d′) from the molding surface (3), with the bottom (12) and the other side wall (13) remaining parallel, or optionally, perpendicular, respectively, to the inter-stratum plane (5 or 6). - For the embodiments shown in
FIGS. 3 a to 4 b, the channels are produced by turning the strata over and by providing the channels with a depth less than the thickness of one stratum. It is to be understood that such embodiments are nonlimiting examples, and that the channels can have other shapes, and a depth greater than the thickness of one stratum. - The corners between the walls and the bottom of the channels are “broken” to limit stress concentrations. The channels follow the molding surface at a predetermined depth (d′) that is constant, or that varies, depending on the region to be cooled or the cooling requirements.
- The position of a channel in the interface plane of a stratum (7 i) is calculated so that, when the strata (7 i) are being stacked, the channel is blocked by the interface plane of the next stratum (7 i+1), so that there is no overlap between the two emerging channels. The size and cross-section of the channels is calculated according to the amount of heat to be removed.
- In another embodiment of the present invention, shown in
FIGS. 5 and 6 , the mold (1) includes a fluid circulation layer (15) that follows or copies the shape of the molding surface. This follower layer has a predetermined thickness and is bounded by a surface (16) facing the molding surface (3) and a surface (17) facing toward the outside of the mold. The follower layer is predetermined so that all points of the surface (16) facing the molding surface are at a predetermined distance or depth (D) from the molding surface (3), which is why this circulation layer has been called a follower layer. The distance (D) is constant, or can vary, depending on the region to be cooled or the thermal stresses. Such a fluid layer constitutes a true, continuous thermal barrier surrounding the part to be produced. The follower layer (15) has been exemplified by a solidified fluid, which is shown in isolation inFIG. 6 , with a feed header (18) for inflow of the regulating fluid and a fluid outlet header (19). - As in the previous illustrative examples, the mold is produced by a “STRATOCONCEPTION” process. In each stratum which is involved in the heat exchange, a portion of the circuit, which will be referred to as an “elementary chamber” (20), is produced during the micromilling step, and the circuit is then formed in its entirety after all of the strata have been superposed.
- The two strata (7 i) and (7 i+1) of the mold that surround or define the chamber for circulating the fluid of the follower layer of
FIG. 6 have been shown inFIGS. 7 a and 7 b. Such a fluid layer constitutes a true, continuous thermal barrier surrounding the part to be produced. The corners between the faces and the bottom of the chamber are also broken, to limit stress concentrations and head losses. - A multiplicity of transverse fins (21) can further be provided inside the chamber, for mechanical reinforcement between the two walls and for stirring the fluid. The fins can be of various shapes depending on the application and the desired effects, for example, a laminar effect (see
FIG. 8 ) or a turbulent effect (seeFIG. 9 ). The shape, size and cross-section of the fins depend on the amount of heat to be removed and on the requirements due, for example, to the mechanical stresses (join radius between the fins and the faces of the layer, etc.). - The follower layer (15) can be broken down into unitary heat exchange cells (22) for the purpose of mathematically modeling all of the heat exchanges undergone or transmitted by the mold during the production of a part. A unitary exchange cell (22) is individually illustrated in
FIG. 10 and is shown diagrammatically on one of the strata (7 i+1) inFIG. 7 b. The various characteristic parameters of the virtual base cell (22) are used, in accordance with the present invention, for mathematically calculating in optimum manner the dimensions of the part and of the circuit before they are produced. This is done, using techniques which are otherwise known, by writing heat balance equations using analytical models and/or multiphysical numerical simulations. - Two further embodiments are shown in
FIGS. 11 and 12 , which operate to limit the thermal conduction toward the sides of the mold (convective losses with the outside) and/or toward the bottom of the mold (conductive losses with the machine frame). These molds include, respectively, a plurality of isolating follower channels (23) (FIG. 11 ), and parallel to the isolating follower channels (23), an isolating follower layer (24) (FIG. 12 ). Such embodiments can also be produced during the micromilling step of the “STRATOCONCEPTION” process, and can be designed in the same way as the regulating follower channels (2) or the regulating follower layer (15). - The isolating channels (23) and the isolating layer (24) are located at a constant, or at a variable distance from the regulating follower layer (15), and are located on the outside of the follower layer (15), placing them between the follower layer (15) and the outside of the mold (the side and bottom faces). The dimensions and the cross-sections of the isolating channels (23) and the isolating layer (24) depend on the isolation to be provided, and are also obtained from multiphysical numerical simulations. For example, the isolating channels (23) and the isolating layer (24) are thicker when they are close to the machine platens than when they are close to the external faces, since the losses by conduction into the platens are greater than the losses by natural convection relative to the external faces. The isolating channels and layers form either an active isolation, or secondary regulation, or a passive isolation if they are filled with an insulating material.
-
FIG. 13 schematically shows a method of filling a mold with an insulating resin (25) in a vacuum chamber (26), for achieving passive isolation. A volume of resin (25) is introduced under an air vacuum into the internal volume. The volume of resin (25) is greater by a few percent (owing to shrinkage) than the internal volume of the channels or the layer to be filled. A telltale (27) is used to ensure complete filling. -
FIG. 14 shows an example of an active thermal regulating device for operating on the regulating fluid circulating in a follower layer (15) which is externally isolated by an isolating layer (24). The cooling fluid (28), at a temperature (T1), is sent by a pump (29) into the chamber (20) of the follower layer (15). If necessary, a solenoid valve (30) controlled by a regulator (31) mixes a colder liquid (32) at a temperature (T2) with the cooling liquid (28). Such mixing will depend on the measured difference between a temperature (T3) measured in the mold region lying between the molding surface (3) and a reference temperature (T4) chosen for the regulation being performed. - Moreover, to obtain a molding tool suitable for withstanding the mechanical stresses to be encountered, a mechanical brace can be provided during the bonding of the strata. This includes an application of mechanical adhesive on the regions extending from the channels, as far as the outside of the mold, and an application of adhesive with a predetermined thermal conductivity on the regions extending from the cooling circuits, as far as the molding surface. The term “cooling circuit” is to be understood to mean both the network of channels and the layer construction.
- In general, the method of the present invention ensures that the strata are held in place in a technically and economically suitable manner for the intended application by the choice of a technique for assembling the strata, namely, adhesive bonding, brazing, screwing or the like.
- The method of the present invention makes it possible to cause regulation of the tools to comply with the requirements of the parts to be produced, allowing very fine regulation in the case of high-performance parts, or active regulation in the case of consumer parts. This serves to optimize regulation of the tools, to improve the productivity of the tools, to optimize the mechanical strength of the parts being produced, to reduce geometrical distortion, to reduce internal stresses due to cooling, to reduce the internal stresses due to filling, to reduce thermal inertia of the tools, and to reduce their weight.
- Furthermore, it is possible to produce bulk or crude items (preformed or otherwise) dedicated to a part, with the optimized system of channels already produced. Each stratum is seen as an independent solid. As a consequence, one is concerned only with the heat supplied to the stratum, and the channel is dimensioned in this way.
- Hotspots can, therefore, be treated with greater care. Any imbalances in cooling, due to the mold/material contact conditions and/or difficulties of gaining access between the die and the punch, can be eliminated.
- At any point in the impression, heat removal is optimized. It is possible to achieve uniform cooling (in terms of flux, temperature, heat transfer coefficient) over the entire surface of the part, while still ensuring a cooling time which is adjusted to the shortest possible, or minimum cooling time, and while nevertheless limiting the residual stresses and deformations in the part.
- Due to the low inertia of the mold, it is possible to control the cooling dynamically. Consequently, it is possible to heat the mold, after ejection of the part, to keep the mold hot until the end of the filling operation, and to then cool the mold. Mold cooling is started slightly before the end of a filling, depending on the reaction time of the tool itself (a very short time due to the reduced inertia of such tools). By improving the filling operation, its duration is shortened, making it easier for the polymer to flow. The level of internal stresses in the injection-molded part is also reduced.
- The combination of optimized cooling with dynamic control of the thermal regulation of the mold allows the cycle time to be reduced by decreasing the filling time and the cooling time. This combination also allows the internal stresses in the injection-molded parts to be considerably reduced, which reduces distortion and post-shrinkage of the parts, and which increases the dimensional quality and improves the aging behavior of the parts. Irrespective of the type of cooling desired, the dimensional, structural and mechanical qualities of the injection-molded parts are improved, whether the parts are high-performance products, attractive products or consumer products.
- Heat transfer is optimized by cell modeling, charts and the simulations used to choose each regulating parameter. The positioning and the dimensions of the fins influence the heat transfer, the mechanical strength of the tools, and the control of turbulence (header losses, etc.). Such positioning must, therefore, be studied and optimized using numerical simulation and optimization tools.
- The design of the feed headers (18) and the outlet headers (19) is key for regulating fluid flow control. This design is also simulated and numerically optimized (for example, with reference to
FIG. 6 , by providing wider or more numerous nozzles (34) at the necessary points). - The time needed to bring the tools into service (to temperature) is shortened. The weight of such tools is also reduced.
- The mold has a low thermal inertia due to thermal and mechanical optimization of the wall thickness between the follower layer and the molding surface. The thermal inertia of the mold can also be increased by the isolating action of the second layer, if necessary. As a result, the volume to be regulated is optimal. Minimal inertia gives the tools a greater production capacity. This is because the regulating time is not only optimized, but the tool returns more rapidly to its initial conditions in order to start a new cycle.
- Of course, the examples and/or applications described above do not limit the scope of the present invention.
- In particular, the present invention extends to many other known fields of application, namely metal foundry work, the building industry, the printing industry or others. Depending on requirements, the fluid chosen can be a liquid, a gas or a powder, and can be used, for example, for purposes of heat exchange, for isolation, for marking, for plugging and/or for assembly and/or rigidification by solidification (or other processes, etc.).
- Moreover, and for the sake of simplification and clarity, while the above-described break-down operations have been performed in parallel planes, this is in no way limiting, and such operations can also be performed in warped surfaces. It should also be mentioned that break-down of the circuit or circuits is tied to that of the part, in the sense that this can be identical, or tied by a mathematical relationship.
- Finally, while the term “cell” has been used with various qualifiers, the term intellectually denotes the same concept.
Claims (16)
1. A mold including a body having a fluid transport circuit comprised of a plurality of channels formed in the body at a predetermined distance spaced from a heat exchange surface associated with the body, and an isolating circuit comprised of a plurality of channels formed in the body at a predetermined distance spaced from the fluid transport circuit and coupled with the fluid transport circuit, wherein the body, the fluid transport circuit and the isolating circuit are formed as an assembly of a plurality of manufactured strata, wherein the fluid transport circuit and the isolating circuit are completely reconstructed during the assembly of the manufactured strata, wherein the plurality of elementary chambers are provided in a portion of the manufactured strata and are placed in fluid-tight communication, and wherein the plurality of elementary isolating chambers are provided in another portion of the manufactured strata and are placed in fluid-tight communication.
2. The mold of claim 1 wherein, following reconstruction of the manufactured strata, the fluid transport circuit forms a three-dimensional network of channels in the body of the mold which follow surface portions of the mold at a predetermined distance from the surface portions.
3. The mold of claim 1 wherein, following reconstruction of the manufactured strata, the fluid transport circuit forms a layer-shaped chamber in the body of the mold.
4. The mold of claim 1 wherein the isolating circuit is uniformly spaced from the fluid transport circuit.
5. The mold of claim 1 wherein the isolating circuit has a uniform thickness.
6. The mold of claim 1 wherein the fluid transport circuit includes a connection to a temperature regulating device.
7. The mold of claim 1 wherein interior portions of the fluid transport circuit include a plurality of transverse fins which provide mechanical reinforcement and which stir the fluid.
8. The mold of claim 7 wherein the transverse fins extend between opposing walls of the channels of the fluid transport circuit to provide the mechanical reinforcement.
9. The mold of claim 1 wherein the isolating circuit is comprised of a plurality of follower channels.
10. The mold of claim 1 wherein the isolating circuit forms a layer-shaped chamber.
11. The mold of claim 1 wherein the assembly of the manufactured strata forming the body, the fluid transport circuit and the isolating circuit is an assembly of bonded layers.
12. The mold of claim 11 which further includes a mechanical adhesive between the manufactured strata on regions of the body extending from the fluid transport circuit to outside portions of the mold, and an adhesive with a predetermined thermal conductivity on regions of the body extending from the fluid transport circuit to surface portions of the mold.
13. The mold of claim 1 wherein the fluid transport circuit is filled with a fluid selected from a group consisting of a heat exchange fluid, a thermal insulation fluid, a liquid material, a pulverulent material and a marking fluid.
14. The mold of claim 1 , wherein the mold is produced by a computer-aided design method including a preliminary step in which body portions of the mold are broken down into elementary strata, followed by steps including manufacture of the elementary strata to form the manufactured strata and reconstruction of the mold by superposing and assembling the manufactured strata.
15. The mold of claim 14 , wherein the computer-aided design method includes the steps of:
defining the fluid transport circuit in the mold;
breaking down the fluid transport circuit into a plurality of elementary chambers as part of the break-down of the mold and during the break-down of the mold;
producing the elementary chambers in the manufactured strata during the manufacture of the manufactured strata; and
completely reconstructing the fluid transport circuit during the superposition and the assembly of the manufactured strata;
breaking down the isolating circuit coupled with the fluid transport circuit into elementary isolating chambers as part of the break-down of the mold and during the break-down of the mold;
producing the elementary isolating chambers in the manufactured strata during the manufacture of the manufactured strata, simultaneously producing the elementary chambers and the elementary isolating chambers during the manufacture of the manufactured strata; and
reconstructing the isolating circuit during the superposition and the assembly of the manufactured strata, simultaneously producing the fluid transport circuit and the isolating circuit.
16. The mold of claim 15 , wherein the method further includes the step of combining the elementary isolating chambers of the isolating circuit to form a thermal barrier between the fluid transport circuit and side and bottom portions of the mold.
Priority Applications (1)
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US12/932,656 US20110155271A1 (en) | 2002-10-07 | 2011-03-02 | Mechanical component having at least one fluid transport circuit |
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US10/530,504 US7920937B2 (en) | 2002-10-07 | 2003-07-15 | Mechanical component having at least one fluid transport circuit and method for designing same in strata |
PCT/FR2003/002224 WO2004034165A1 (en) | 2002-10-07 | 2003-07-15 | Mechanical component having at least one fluid transport circuit and method for designing same in strata |
US12/932,656 US20110155271A1 (en) | 2002-10-07 | 2011-03-02 | Mechanical component having at least one fluid transport circuit |
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PCT/FR2003/002224 Continuation WO2004034165A1 (en) | 2002-10-07 | 2003-07-15 | Mechanical component having at least one fluid transport circuit and method for designing same in strata |
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Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2789187B1 (en) | 1998-11-19 | 2001-11-30 | Cirtes Ct D Ingenierie De Rech | PROCESS FOR PRODUCING MECHANICAL PARTS, IN PARTICULAR PROTOTYPES, BY DECOMPOSITION INTO STRATES, ELEMENTARY STRATES OBTAINED ACCORDING TO THE PROCESS AND MECHANICAL PARTS THUS OBTAINED |
FR2808896B1 (en) | 2000-05-15 | 2003-05-09 | Cirtes Ct D Ingenierie De Rech | DEVICE FOR PRODUCING PLATES FOR A RAPID PROTOTYPING PROCESS, METHOD FOR MACHINING AND ASSEMBLING SUCH PLATES AND PROTOTYPED PARTS THUS OBTAINED |
FR2845492B1 (en) * | 2002-10-07 | 2004-11-26 | Cirtes Src | MECHANICAL PART WITH AT LEAST ONE FLUID TRANSPORT CIRCUIT AND METHOD FOR DESIGNING SAME |
AU2003214352A1 (en) | 2003-02-06 | 2004-09-28 | Cirtes Src | Method of optimising the joints between layers in modelling or prototyping involving layer decomposition, and parts thus obtained |
US20060145397A1 (en) * | 2005-01-05 | 2006-07-06 | Steil Frederick G | Method and tool for molding |
FR2886747B1 (en) | 2005-06-03 | 2007-08-10 | Cirtes Src Sa | PROCESS FOR THE STRATOCONCEPTION MANUFACTURING OF A PIECE CROSSED BY FLUID TRANSFER CHANNELS PROVIDED IN THE INTERSTRATES |
FR2889604B1 (en) | 2005-08-02 | 2007-12-07 | Catoire Semi Soc Par Actions S | METHOD FOR LOCALLY MODIFYING A LAMINATED MOLDING DEVICE AND INSERT LOCALIZED MODIFICATION IN A STRATE |
DE102005050118B4 (en) * | 2005-10-18 | 2009-04-09 | Werkzeugbau Siegfried Hofmann Gmbh | Arrangement for tempering a metallic body and use thereof |
US20100036646A1 (en) * | 2008-08-08 | 2010-02-11 | Honda Motor Co., Ltd. | Analytical model preparation method, and simulation system method for predicting molding failure |
US20190118442A9 (en) * | 2010-04-20 | 2019-04-25 | Honda Motor Co., Ltd. | Conforming cooling method and mold |
DK2407292T3 (en) * | 2010-07-14 | 2013-12-16 | Siemens Ag | Negative mold comprising predefined foam blocks for molding a component and method of producing the negative mold. |
FR2976201B1 (en) * | 2011-06-10 | 2016-02-05 | Pole Europ De Plasturgie | METHOD FOR FORMING CHANNELS IN A TOOLING, TOOLING FORMED WITH SUCH A METHOD AND COMPUTER PROGRAM PRODUCT PROVIDING SUCH A METHOD |
US20190255771A1 (en) * | 2018-02-20 | 2019-08-22 | University Of Connecticut | Apparatus and computational modeling for non-planar 3d printing |
US10940523B2 (en) * | 2018-06-01 | 2021-03-09 | The Boeing Company | Apparatus for manufacturing parts, and related methods |
US11072039B2 (en) * | 2018-06-13 | 2021-07-27 | General Electric Company | Systems and methods for additive manufacturing |
FR3087375B1 (en) | 2018-10-19 | 2022-01-14 | Commissariat Energie Atomique | INSTRUMENT TOOLS BY FUNCTIONALIZED ADDITIVE MANUFACTURING |
CN109986724B (en) * | 2019-05-07 | 2020-11-24 | 重庆大学 | Structural function integrated design method for additive manufacturing mould conformal cooling water channel |
US10987831B2 (en) * | 2019-05-24 | 2021-04-27 | The Boeing Company | Dies for forming a part and associated systems and methods |
CN110216814B (en) * | 2019-06-10 | 2021-06-22 | 北玻院(滕州)复合材料有限公司 | Mold based on 3D printing technology and forming method thereof |
CN114701100B (en) * | 2022-03-30 | 2023-06-02 | 贵州省工程复合材料中心有限公司 | Manufacturing method of injection mold suitable for intelligent manufacturing of precise deep cavity type product |
Citations (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3416766A (en) * | 1966-11-25 | 1968-12-17 | Miller Mold Company | Mold construction |
DE3017559A1 (en) * | 1980-05-08 | 1981-11-12 | Gottfried Joos Maschinenfabrik GmbH & Co, 7293 Pfalzgrafenweiler | Heating and cooling plate - one side contains resistance heaters and the other has circulation tubes for coolant |
US5031483A (en) * | 1989-10-06 | 1991-07-16 | W. R. Weaver Co. | Process for the manufacture of laminated tooling |
US5775402A (en) * | 1995-10-31 | 1998-07-07 | Massachusetts Institute Of Technology | Enhancement of thermal properties of tooling made by solid free form fabrication techniques |
US5812402A (en) * | 1995-11-02 | 1998-09-22 | Fujitsu Limited | Injection mold design system and injection mold design method |
US5847958A (en) * | 1993-11-26 | 1998-12-08 | Ford Global Technologies, Inc. | Rapidly making a contoured part |
US6454924B2 (en) * | 2000-02-23 | 2002-09-24 | Zyomyx, Inc. | Microfluidic devices and methods |
US20020162940A1 (en) * | 2001-05-01 | 2002-11-07 | Brookfield Innovations Inc. | System for regulating mold temperature |
US20020175265A1 (en) * | 2001-04-05 | 2002-11-28 | Bak Joseph V. | Diffusion bonded tooling with conformal cooling |
US6629559B2 (en) * | 2000-05-24 | 2003-10-07 | Massachusetts Institute Of Technology | Molds for casting with customized internal structure to collapse upon cooling and to facilitate control of heat transfer |
US20040247725A1 (en) * | 2001-11-20 | 2004-12-09 | Eberhard Lang | Form tool for producing particle foam moulded parts |
US20060055085A1 (en) * | 2004-09-14 | 2006-03-16 | Tokyo University Of Agriculture And Technology | Layered metal mold and method of using the same for molding |
US7195223B2 (en) * | 2002-12-02 | 2007-03-27 | Mark Manuel | System and a method for cooling a tool |
US20070075457A1 (en) * | 2002-05-15 | 2007-04-05 | Krauss-Maffei Kunststofftechnik Gmbh | Molding tool, and method of making plastic articles |
US7278197B2 (en) * | 2005-01-18 | 2007-10-09 | Floodcooling Technologies, Llc | Method for producing a tool |
US7340317B2 (en) * | 2000-12-20 | 2008-03-04 | Floodcooling Technologies, Llc | Method and apparatus for the creation of a tool |
US7920937B2 (en) * | 2002-10-07 | 2011-04-05 | Cirtes SRC, SA Cooperative d'Ues | Mechanical component having at least one fluid transport circuit and method for designing same in strata |
US8079509B2 (en) * | 2008-02-26 | 2011-12-20 | Floodcooling Technologies, Llc | Brazed aluminum laminate mold tooling |
Family Cites Families (81)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2428658A (en) | 1944-02-15 | 1947-10-07 | American Brass Co | Water-cooled slab mold |
US2479191A (en) | 1945-02-15 | 1949-08-16 | Williams Engineering Company | Fluid cooled mold |
US2477060A (en) | 1945-09-10 | 1949-07-26 | Torrington Mfg Co | Water-cooled slab mold |
US2615111A (en) | 1949-04-30 | 1952-10-21 | Robert G Paquette | Trimming device |
US3039146A (en) | 1956-04-24 | 1962-06-19 | Vasco Ind Corp | Molding apparatus |
US3369272A (en) | 1965-07-09 | 1968-02-20 | Hoover Ball & Bearing Co | Apparatus for concurrently blow molding and trimming plastic articles |
US3612387A (en) | 1970-01-07 | 1971-10-12 | Aeronca Inc | Brazing method and apparatus |
US3790152A (en) | 1971-04-01 | 1974-02-05 | J Parsons | Meltable matrix chucking apparatus |
US3909582A (en) | 1971-07-19 | 1975-09-30 | American Can Co | Method of forming a line of weakness in a multilayer laminate |
IT998151B (en) | 1973-06-15 | 1976-01-20 | Della Flora S R L | METHOD AND APPARATUS FOR ANCHORING AND STABILIZING OBJECTS TO BE PROCESSED ESPECIALLY GOLDSMITH OBJECTS AT A SOP PORT |
US4001069A (en) | 1974-10-21 | 1977-01-04 | Dynell Electronics Corporation | Arrangement for generating and constructing three-dimensional surfaces and bodies |
US3932923A (en) | 1974-10-21 | 1976-01-20 | Dynell Electronics Corporation | Method of generating and constructing three-dimensional bodies |
US3991021A (en) * | 1976-03-08 | 1976-11-09 | Cities Service Company | Intumescent composition |
EP0001198B1 (en) | 1977-09-05 | 1980-08-20 | Scal Societe De Conditionnements En Aluminium | Process for the manufacture of articles by the thermoforming of aluminium or magnesium or of aluminium or magnesium base alloys |
DE2800828A1 (en) | 1978-01-10 | 1979-07-12 | Krupp Gmbh | DEVICE FOR TURNING WORKPIECES |
US4338068A (en) | 1980-05-22 | 1982-07-06 | Massachusetts Institute Of Technology | Injection molding device and method |
JPS58197011A (en) | 1982-05-12 | 1983-11-16 | Honda Motor Co Ltd | Manufacturing method and equipment for skin forming material |
DE3325310C2 (en) | 1983-07-13 | 1986-01-30 | Metzeler Kautschuk GmbH, 8000 München | Device for the production of molded parts from plastic |
US4675825A (en) | 1984-10-30 | 1987-06-23 | Dementhon Daniel F | Computer-controlled peripheral shaping system |
US4778557A (en) | 1985-10-11 | 1988-10-18 | W. R. Grace & Co., Cryovac Div. | Multi-stage corona laminator |
US4752352A (en) | 1986-06-06 | 1988-06-21 | Michael Feygin | Apparatus and method for forming an integral object from laminations |
US4781555A (en) | 1987-01-07 | 1988-11-01 | Efp Corp. | Apparatus for forming molded patterns |
DE3711470A1 (en) | 1987-04-04 | 1988-10-27 | Fraunhofer Ges Forschung | Method of producing a three-dimensional model |
US5015312A (en) | 1987-09-29 | 1991-05-14 | Kinzie Norman F | Method and apparatus for constructing a three-dimensional surface of predetermined shape and color |
FR2625135B1 (en) | 1987-12-29 | 1990-06-15 | Peugeot | MOLD FOR THE MANUFACTURE BY BLOWING OF THERMOPLASTIC MATERIALS COMPRISING MACHINING MEANS AND PARTS OBTAINED WITH THIS MOLD |
US5776409A (en) | 1988-04-18 | 1998-07-07 | 3D Systems, Inc. | Thermal stereolithograp using slice techniques |
AU4504089A (en) | 1988-10-05 | 1990-05-01 | Michael Feygin | An improved apparatus and method for forming an integral object from laminations |
AU7452391A (en) | 1990-02-15 | 1991-09-03 | 3D Systems, Inc. | Method of and apparatus for forming a solid three-dimensional article from a liquid medium |
DE4041105A1 (en) | 1990-12-21 | 1992-06-25 | Toepholm & Westermann | METHOD FOR PRODUCING INDIVIDUALLY ADAPTED OTOPLASTICS OR EARPIECES TO THE CONTOURS OF AN EAR CHANNEL |
FR2673302B1 (en) * | 1991-02-26 | 1996-06-07 | Claude Barlier | PROCESS FOR THE CREATION AND REALIZATION OF PARTS BY C.A.O. AND PARTS SO OBTAINED. |
US6276656B1 (en) | 1992-07-14 | 2001-08-21 | Thermal Wave Molding Corp. | Mold for optimizing cooling time to form molded article |
JP2558431B2 (en) | 1993-01-15 | 1996-11-27 | ストラタシイス,インコーポレイテッド | Method for operating system for manufacturing three-dimensional structure and apparatus for manufacturing three-dimensional structure |
WO1995008416A1 (en) | 1993-09-20 | 1995-03-30 | Massachusetts Institute Of Technology | Process for rapidly forming laminated dies and said dies |
EP0655317A1 (en) | 1993-11-03 | 1995-05-31 | Stratasys Inc. | Rapid prototyping method for separating a part from a support structure |
US5514232A (en) | 1993-11-24 | 1996-05-07 | Burns; Marshall | Method and apparatus for automatic fabrication of three-dimensional objects |
EP0738583B1 (en) | 1993-12-29 | 1998-10-14 | Kira Corporation | Sheet laminate forming method |
US5590454A (en) | 1994-12-21 | 1997-01-07 | Richardson; Kendrick E. | Method and apparatus for producing parts by layered subtractive machine tool techniques |
US5795529A (en) | 1995-05-31 | 1998-08-18 | Acushnet Company | Fast thermal response mold |
US6073451A (en) | 1995-08-17 | 2000-06-13 | Tarumizu; Yoshitaka | Freezing chuck type machining method |
US5663883A (en) | 1995-08-21 | 1997-09-02 | University Of Utah Research Foundation | Rapid prototyping method |
JPH0976352A (en) | 1995-09-13 | 1997-03-25 | Toyota Motor Corp | Method and apparatus for determining layer thickness and layer shape |
FR2743017B1 (en) | 1996-01-03 | 1998-02-20 | Allanic Andre Luc | METHOD OF RAPID PROTOTYPING BY SUCCESSIVE TRANSFORMATION OF MATERIAL VOLUMES AND DEVICE FOR CARRYING OUT SAID METHOD |
US5765137A (en) | 1996-03-04 | 1998-06-09 | Massachusetts Institute Of Technology | Computer system and computer-implemented process for correlating product requirements to manufacturing cost |
US6344160B1 (en) | 1996-09-17 | 2002-02-05 | Compcast Technologies, Llc | Method for molding composite structural plastic and objects molded thereby |
US6021358A (en) | 1996-09-18 | 2000-02-01 | Sachs; George A. | Three dimensional model and mold making method using thick-slice subtractive fabrication |
US5943240A (en) | 1996-10-09 | 1999-08-24 | Nakamura; Kaoru | Machine tool control system and method utilizing metal mold arrangement information |
US6136132A (en) | 1997-03-26 | 2000-10-24 | Kinzie; Norman F. | Method and apparatus for the manufacture of three-dimensional objects |
US5849238A (en) * | 1997-06-26 | 1998-12-15 | Ut Automotive Dearborn, Inc. | Helical conformal channels for solid freeform fabrication and tooling applications |
JP3823024B2 (en) | 1997-08-30 | 2006-09-20 | ホンゼル ゲゼルシャフト ミット ベシュレンクテル ハフツング ウント コンパニー コマンディートゲゼルシャフト | Foamable aluminum alloy and method for producing aluminum foam from foamable aluminum alloy |
JP3217999B2 (en) | 1997-12-03 | 2001-10-15 | セイコーインスツルメンツ株式会社 | Component manufacturing method and component manufacturing device |
WO1999051409A1 (en) | 1998-04-07 | 1999-10-14 | Yuugen Kaisha Niimitekkou | Metal mold and press device |
US6554882B1 (en) | 1998-05-26 | 2003-04-29 | Drexel University | Rapid tooling sintering method and compositions therefor |
JP3545618B2 (en) | 1998-10-15 | 2004-07-21 | 三協オイルレス工業株式会社 | Cam slider and cam unit |
FR2789187B1 (en) | 1998-11-19 | 2001-11-30 | Cirtes Ct D Ingenierie De Rech | PROCESS FOR PRODUCING MECHANICAL PARTS, IN PARTICULAR PROTOTYPES, BY DECOMPOSITION INTO STRATES, ELEMENTARY STRATES OBTAINED ACCORDING TO THE PROCESS AND MECHANICAL PARTS THUS OBTAINED |
FR2789188B1 (en) | 1998-11-19 | 2001-11-30 | Cirtes Ct D Ingenierie De Rech | PROCESS FOR PRODUCING MECHANICAL PARTS, PARTICULARLY PROTOTYPES, BY DECOMPOSITION INTO STRATES WITH RETURN, ELEMENTARY STRATES OBTAINED ACCORDING TO THE PROCESS AND MECHANICAL PARTS THUS OBTAINED |
US6284182B1 (en) | 1999-03-12 | 2001-09-04 | Konal Engineering And Equipment Inc. | Molding process employing heated fluid |
US6324438B1 (en) | 1999-05-11 | 2001-11-27 | North Carolina State University | Methods and apparatus for rapidly prototyping three-dimensional objects from a plurality of layers |
US6405095B1 (en) | 1999-05-25 | 2002-06-11 | Nanotek Instruments, Inc. | Rapid prototyping and tooling system |
US6409902B1 (en) | 1999-08-06 | 2002-06-25 | New Jersey Institute Of Technology | Rapid production of engineering tools and hollow bodies by integration of electroforming and solid freeform fabrication |
US6688871B1 (en) | 1999-08-31 | 2004-02-10 | Massachusetts Institute Of Technology | Apparatus for encapsulating a workpiece which is to be machined |
US20030141609A1 (en) | 2000-01-13 | 2003-07-31 | Jia Yim Sook | Method for momentarily heating the surface of a mold and system thereof |
KR100380802B1 (en) | 2000-01-13 | 2003-04-18 | 임숙자 | Method for Monentarily Heating the Surface of a Mold and System thereof |
US6627835B1 (en) | 2000-02-02 | 2003-09-30 | Purdue Research Foundation | Three dimensional object fabrication techniques |
US6617601B1 (en) | 2000-03-10 | 2003-09-09 | Lmi Technologies Inc. | Molten metal pouring control system and method |
US20020165634A1 (en) | 2000-03-16 | 2002-11-07 | Skszek Timothy W. | Fabrication of laminate tooling using closed-loop direct metal deposition |
KR100362737B1 (en) | 2000-04-07 | 2002-11-27 | 한국과학기술원 | Variable lamination manufacturing method and apparatus by using linear heat cutting system |
FR2809040B1 (en) | 2000-05-15 | 2002-10-18 | Cirtes Ct D Ingenierie De Rech | VISE STRUCTURE FOR POSITIONING AND HOLDING PARTS FOR THEIR MACHINING |
FR2808896B1 (en) | 2000-05-15 | 2003-05-09 | Cirtes Ct D Ingenierie De Rech | DEVICE FOR PRODUCING PLATES FOR A RAPID PROTOTYPING PROCESS, METHOD FOR MACHINING AND ASSEMBLING SUCH PLATES AND PROTOTYPED PARTS THUS OBTAINED |
US20020187217A1 (en) | 2000-09-12 | 2002-12-12 | Mcdonald Robert R. | Injection molding cooling core and method of use |
DE10058748C1 (en) | 2000-11-27 | 2002-07-25 | Markus Dirscherl | Method for producing a component and device for carrying out the method |
US6719554B2 (en) | 2001-01-18 | 2004-04-13 | Progressive Components International Corporation | Method and apparatus for in mold trimming |
US20020125613A1 (en) | 2001-03-08 | 2002-09-12 | Cominsky Kenneth D. | Mandrel fabrication for cobond assembly |
US20020149137A1 (en) * | 2001-04-12 | 2002-10-17 | Bor Zeng Jang | Layer manufacturing method and apparatus using full-area curing |
KR100384135B1 (en) | 2001-07-06 | 2003-05-14 | 한국과학기술원 | Transfer Type Variable Lamination Manufacturing by using Linear Heat Cutting System And Apparatus Thereof |
US6728591B1 (en) | 2001-08-01 | 2004-04-27 | Advanced Micro Devices, Inc. | Method and apparatus for run-to-run control of trench profiles |
ITVR20010132A1 (en) | 2001-12-11 | 2003-06-11 | Isap Omv Group Spa | PROCESS AND EQUIPMENT FOR THE MOLD CUTTING OF THERMOFORMED OBJECTS REMOVABLE FROM THE MOLD WITHOUT WITHDRAWAL PLATE. |
BRPI0106597B1 (en) | 2001-12-28 | 2016-03-15 | Brasil Compressores Sa | electric motor rotor injection process |
FR2834803B1 (en) | 2002-01-16 | 2004-02-13 | Cirtes Src | PROCESS FOR OPTIMIZING JOINTS OF STRATES IN A MODELING OR PROTOTYPING BY DECOMPOSITION INTO STRATES AND PARTS OBTAINED THEREBY |
US6756309B1 (en) | 2003-01-30 | 2004-06-29 | Taiwan Semiconductor Manufacturing Co., Ltd | Feed forward process control method for adjusting metal line Rs |
DE10310987B3 (en) | 2003-03-07 | 2004-04-08 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Method for making models, tools or tool inserts comprises directly molding them in open mold mounted on machine tool, molding then being trimmed to its final shape |
US7141191B2 (en) | 2003-05-02 | 2006-11-28 | The Boeing Company | Triple purpose lay-up tool |
-
2002
- 2002-10-07 FR FR0212389A patent/FR2845492B1/en not_active Expired - Fee Related
-
2003
- 2003-07-15 EP EP20030750807 patent/EP1552351B1/en not_active Expired - Lifetime
- 2003-07-15 ES ES03750807T patent/ES2358260T3/en not_active Expired - Lifetime
- 2003-07-15 AU AU2003269023A patent/AU2003269023A1/en not_active Abandoned
- 2003-07-15 AT AT03750807T patent/ATE494575T1/en active
- 2003-07-15 CA CA 2501244 patent/CA2501244C/en not_active Expired - Lifetime
- 2003-07-15 US US10/530,504 patent/US7920937B2/en active Active
- 2003-07-15 DE DE60335642T patent/DE60335642D1/en not_active Expired - Lifetime
- 2003-07-15 WO PCT/FR2003/002224 patent/WO2004034165A1/en not_active Application Discontinuation
-
2011
- 2011-03-02 US US12/932,656 patent/US20110155271A1/en not_active Abandoned
Patent Citations (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3416766A (en) * | 1966-11-25 | 1968-12-17 | Miller Mold Company | Mold construction |
DE3017559A1 (en) * | 1980-05-08 | 1981-11-12 | Gottfried Joos Maschinenfabrik GmbH & Co, 7293 Pfalzgrafenweiler | Heating and cooling plate - one side contains resistance heaters and the other has circulation tubes for coolant |
US5031483A (en) * | 1989-10-06 | 1991-07-16 | W. R. Weaver Co. | Process for the manufacture of laminated tooling |
US5847958A (en) * | 1993-11-26 | 1998-12-08 | Ford Global Technologies, Inc. | Rapidly making a contoured part |
US5775402A (en) * | 1995-10-31 | 1998-07-07 | Massachusetts Institute Of Technology | Enhancement of thermal properties of tooling made by solid free form fabrication techniques |
US6112804A (en) * | 1995-10-31 | 2000-09-05 | Massachusetts Institute Of Technology | Tooling made by solid free form fabrication techniques having enhanced thermal properties |
US6354361B1 (en) * | 1995-10-31 | 2002-03-12 | Massachusetts Institute Of Technology | Tooling having advantageously located heat transfer channels |
US5812402A (en) * | 1995-11-02 | 1998-09-22 | Fujitsu Limited | Injection mold design system and injection mold design method |
US6454924B2 (en) * | 2000-02-23 | 2002-09-24 | Zyomyx, Inc. | Microfluidic devices and methods |
US6629559B2 (en) * | 2000-05-24 | 2003-10-07 | Massachusetts Institute Of Technology | Molds for casting with customized internal structure to collapse upon cooling and to facilitate control of heat transfer |
US7340317B2 (en) * | 2000-12-20 | 2008-03-04 | Floodcooling Technologies, Llc | Method and apparatus for the creation of a tool |
US20020175265A1 (en) * | 2001-04-05 | 2002-11-28 | Bak Joseph V. | Diffusion bonded tooling with conformal cooling |
US20020162940A1 (en) * | 2001-05-01 | 2002-11-07 | Brookfield Innovations Inc. | System for regulating mold temperature |
US20040247725A1 (en) * | 2001-11-20 | 2004-12-09 | Eberhard Lang | Form tool for producing particle foam moulded parts |
US20070075457A1 (en) * | 2002-05-15 | 2007-04-05 | Krauss-Maffei Kunststofftechnik Gmbh | Molding tool, and method of making plastic articles |
US7920937B2 (en) * | 2002-10-07 | 2011-04-05 | Cirtes SRC, SA Cooperative d'Ues | Mechanical component having at least one fluid transport circuit and method for designing same in strata |
US7195223B2 (en) * | 2002-12-02 | 2007-03-27 | Mark Manuel | System and a method for cooling a tool |
US20060055085A1 (en) * | 2004-09-14 | 2006-03-16 | Tokyo University Of Agriculture And Technology | Layered metal mold and method of using the same for molding |
US7278197B2 (en) * | 2005-01-18 | 2007-10-09 | Floodcooling Technologies, Llc | Method for producing a tool |
US8079509B2 (en) * | 2008-02-26 | 2011-12-20 | Floodcooling Technologies, Llc | Brazed aluminum laminate mold tooling |
Non-Patent Citations (1)
Title |
---|
Translation of DE 3017559 A1. (date is not applicable) * |
Also Published As
Publication number | Publication date |
---|---|
FR2845492B1 (en) | 2004-11-26 |
DE60335642D1 (en) | 2011-02-17 |
CA2501244C (en) | 2012-05-01 |
EP1552351B1 (en) | 2011-01-05 |
US7920937B2 (en) | 2011-04-05 |
ATE494575T1 (en) | 2011-01-15 |
AU2003269023A1 (en) | 2004-05-04 |
US20050278928A1 (en) | 2005-12-22 |
EP1552351A1 (en) | 2005-07-13 |
CA2501244A1 (en) | 2004-04-22 |
WO2004034165A1 (en) | 2004-04-22 |
ES2358260T3 (en) | 2011-05-09 |
FR2845492A1 (en) | 2004-04-09 |
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