WO2004113036A1

WO2004113036A1 - Flanging and trimming machine of panels

Info

Publication number: WO2004113036A1
Application number: PCT/IB2004/002018
Authority: WO
Inventors: Andrea Bortolini
Original assignee: Bortolini Engineering
Priority date: 2003-06-20
Filing date: 2004-06-15
Publication date: 2004-12-29
Also published as: ITPN20030040A1; EP1638743A1

Abstract

Flanging-trimming machine of flat, curved, mixed flat-curved and inclined panels, adapted to apply on a not removable way covering strips of flanges against the peripheral edges of the same panels. Machine comprising support means (13, 14) for each panel (12) to be flanged and first support means (15) for the guiding and feeding means (47) of the covering strips (40), glueing means (48) and compression means (49), and second support means (16) for the trimming milling cutters (80, 81) and butting milling cutters (82, 83), said first and second support means (15, 16) being displaceable with a relative movement with respect to said panel support means (13, 14), to determine in succession the applying of the covering strips of flanges (40) on to the panel peripheral edges (78), and the trimming and butting of the same covering strips of flanges.

Description

FLANGING AND TRIMMING MACHINE OF PANELS The invention relates to a flanging-trimming machine of panels, adapted to apply on a not removable way a plurality of covering strips having the required aesthetical appearance against the peripheral edge of panels having differently shaped surfaces or not differently shaped surfaces, and inclined Hangings. Flanging machines of the kind referred to are known, for applying on a not removable way covering strips against the peripheral edges of flat panels, made of word, chipped wood, plastics and similar materials, in which machines the panels to be covered along the edges are disposed, which panels are prepared and cut in advance with the pre- established forms and sizes by means of machining operations effected with per se known operating machines, and such panels are progressively covered along their peripheral edges with corresponding covering strips made of wood, plastics or other suitable materials, in a manner that they are secured against such edges without possibility to be detached therefrom. In order doing this, these covering strips are covered in advance on to their surface to be secured against said peripheral edges by means of adequate adhesive substances, like i.e. thermo-meltable glues and this operation is normally performed on a proper machine operative station, by drawing with a roll the adhesive contained into a specific reservoir and by transferring such an adhesive on to the surface of the strips to be applied against the different peripheral edges of each panel, by contacting such roll with the surface referred to, and afterwards the strips covered with adhesive are pressed by a further machine pressure roll against the peripheral edges of each panel, thereby providing a not removable junction of these parts. Such covering strips may also be pre-coated with adhesive substances in other areas of the manufacturing factory, so that these strips so arranged in the above mentioned flanging machines are firstly heated at temperatures sufficient to soften the same adhesives and then are secured in the manner as above described to the peripheral edges of each panel. Moreover, there are known flanging machines for flat panels, substantially comprising a set of separate stations for glueing and for applying by compression some covering strips or flanges against the peripheral edges of each panel, as well as comprising subsequent separate stations for trimming and butting such peripheral edges. In the machines referred to, the panels are displaced in succession by continuous conveying means toward all the stations referred to and are flanged solely on a peripheral edge thereof and, at the end of all the operative steps, they may be flanged also on different peripheral edges upon displacement in advance of such panel along back paths even of considerable extent. However, the flanging machines of this kind have evident applicative limitations, deriving from the fact that they are able to effect flanging operations solely of flat panels with straight and curvilinear perimeters and not of panels curved concave or convex with curvilinear and mixed flat-curvilinear profiles, since these machines are structured for machining only panels provided exclusively with flat surfaces along Cartesian axes X and Y, which are rectilinear and orthogonal to each other, and thus cannot perform machining operations of curved planes, so that in the case in which the so profiled panels must be flanged with Hangings also inclined with respect to the panel plane, it is necessary to perform these operations manually, with consequent longer operative times and more operative steps and less productive flexibility of the flanging machines of this kind. The object of the present invention is to overcome the drawbacks and the applicative limitations of the current flanging machines, by utilizing a flanging-trimming machine of mixed curved and flat-concave panels with a simple and compact constructive structure, adapted to perform automatically the orthogonal and inclined flanging of these panels with a considerable productive versatility and flexibility thereof. This machine is made with the constructive characteristics substantially described, with particular reference to the attached patent claims. The invention will be better understood by the following description, given solely by way of not limitative example and with reference to the accompanying drawings, wherei : - Fig. 1 shows a schematic front view of a flanging-trimming machine according to the invention ; - Fig. 2 shows a schematic plan view of the machine of Fig. 1 ; - Fig. 3 shows a schematic side view of the machine of Fig. 1 ; - Fig. 4 shows a perspective front view of the various component parts of a first machine working station, adapted to perform the panel flanging, said station being represented on the rest condition thereof ; - Fig. 5 shows a perspective back view of the first working station of Fig. 4, on the working condition thereof ; - Fig. 6 shows a front view of one of the component parts of the first working station of

Fig. 4 ; - Fig. 7 shows a side view of the component part of Fig. 6 ; - Fig. 8 shows a side view of another component part of the first working station of Fig.

4 ; - Fig. 9 shows a perspective front view of a second machine working station, adapted to

perform the panel trimming and butting ; - Fig. 10 shows a perspective front view of one component part of the second station of

Fig. 9 ; - Fig. 11 shows a side view of the component part of Fig. 10 ; - Fig. 12 shows a front view of the component part of Fig. 10 ; - Fig. 13 shows a plan view of the component part of Fig. 10 ; - Fig. 14 shows a side view of another machine component part, combined with the component part of Fig. 11 , for flanging a curved panel ; - Fig. 15 shows a side view of the component part of Fig. 14, for flanging panels with different curvatures ; - Fig. 16 shows a plan view of the present flanging machine, with a curved panel to be flanged ; - Fig. 17 shows a perspective front view of the machine of Fig. 16 ; - Fig. 18 shows a perspective front view of the present machine, arranged for flanging narrow panels with long side to be flanged, on a first constructive version thereof ; - Fig. 19 shows a perspective front view of the present machine, arranged for flanging long panels with narrow side to be flanged, on a second constructive version thereof ; - Fig. 20 shows a perspective front view of the present machine, arranged for flanging further types of panels ; - Fig. 21 schematically shows a side view of the arrangement of curved panels to be flanged on the present machine ; - Figs. 22-25 show perspective front views of different types of curved panels to be flanged on the present machine ; - Figs. 26-29 show perspective front views of different types of flat panels and mixed

flat-curved panels to be flanged on the present machine ; - Figs. 30-31 show perspective front views of two different types of small furniture flanged with straight and inclined edges with respect to the panel plane, to be flanged with the present machine ; - Fig. 32 shows a perspective front view of the present flanging-trimming machine on another embodiment thereof. The above mentioned Figures schematically represent a flanging-trimming machine according to the invention, adapted to apply in a not removable way some covering strips made of wood, plastics or other suitable materials to corresponding peripheral edges of panels with flat, curved or mixed flat and curved shape, made of wood, chipped wood, plastics and similar materials. As particularly visible from Fig. 1-3 and 16-17, this machine is substantially constituted by a flat base 5 with rectilinear horizontal extension, joined with two corresponding blocks projected upward 6 and 7, arranged parallel to and laterally spaced from each other, in which two corresponding pairs of rectilinear guides 8, 9 and 10, 11 are provided, which are parallel to and spaced away from each other for the entire extension of the relative blocks, of which the first pair of guides 8 and 9 is provided for fixing and supporting the different panels to be flanged (the Figures show a panel 12), and a pair of movable carriages 13 and 14, spaced away from each other and slidable alternatively on the longitudinal direction along said guides and provided for supporting and applying in position each panel to be flanged, while the second pair of guides 10 and 11 is provided for supporting a pair of movable carriages 15 and 16, separated and slidable independently from each other alternatively on the longitudinal direction along the same guides, the first movable carriage 15 of which performs the function of carriage for flanging the strips, and the second movable carriage 16 performs the function of carriage for trimming and butting the strips. Moreover, these movable carriages 15 and 16 are controlled by means of a respective control motor 17 and 18, made preferably like brashless D.C. motor, supplied by the machine electric circuit and housed into associated movable bushes 19 and 20, joined with the corresponding carriage and movable alternately on the longitudinal direction by means of a movable track, bar or the like 21, arranged parallel to and spaced away from the pair of sliding guides of said carriages. As particularly visible from Figs. 14 and 15, in which one of the movable carriages 13 and 14, in this case the carriage 13, is shown, which is arranged for supporting and fixing a curved panel 22, and from Figs. 16 and 17 in which both the movable carriages supporting such curved panel are shown, it is noted that each carriage is constituted by a vertical flat plate 23 shaped as it will be described later, and by a horizontal flat plate 24 joined to the previous plate and shaped for being adapted slidably on to the corresponding rectilinear guides 8 and 9. The vertical plate 23 is shaped with a set of lengthened shaped through slots, adapted to support the panel to be flanged 22 on at least two contact points during each flanging, trimming and butting step of the same panel, thereby ensuring an effective and balanced support of such panel, by preventing any displacement thereof by means of the locking device 25 A of conventional type, said slots being formed preferably by a vertical flat slot 25 and a horizontal flat slot 26, which intersect to each other at the plate central zone, by another vertical and lateral slot 27 parallel to and moved away from the previous vertical slot, by a further horizontal and upper slot 28 parallel to and moved away from the previous horizontal slot, and by an inclined slot 29 with an inclination directed downward, arranged on the plate on a position laterally from the vertical slot 25. In order to support each panel by means of the slots referred to, two pins 30 and 31 or the like are inserted removably therein, which serve to secure on position the panel to be flanged being laid thereon. In the example illustrated by Fig. 14, such pins are inserted into and secured along the vertical slot 27 and the inclined slot 29, for supporting the curved panel 22 slightly curved upward, while in the example shown in Fig. 15 there are shown such pins 30 and 31 inserted into and secured along the inclined slot 29 and the upper slot 28, for supporting the curved panel 22 (drawn dashed) with a larger curvature directed upward. Besides, a movable bracket 33 is supported oscillating on the vertical plate 23, which bracket is formed by a thin rectilinear central body 34 terminating with an end portion 35 being pivoted on the plate, near the vertical slot 25 and with the other end portion 36 being slightly bent upward, in which a support slot 37 is provided, which is formed by two short flat surfaces 38 and 39 orthogonal to each other, on to which the edge of the panel to be covered is laid, when the bracket 33 is displaced from its vertical rest position to its horizontal working position, indicated with a dashed line on Fig. 15. The position in which such edge is laid on to the slot 37 and completely pushed against the vertical abutting surface 38 of the same slot defines the "zero" or starting position of the panel edge, in which the covering strip or flange must be applied to such panel edge. In this way, as soon as each panel to be flanged is pushed with its edge in the above mentioned "zero position", the remaining panel part is laid on to the relative reference pins, to provide for the possible better support of the entire panel, and this operation is effected by displacing a pair of pins into the different slots of the vertical plate 23 on the positions from time to time more convenient to achieve the desired result. This circumstance, therefore, allows to lay and secure and lock with the locking device 25 A both the end portions of the panels with different shapes, namely flat, curved and mixed flat-curved shape, and to flange all the desired edges of the panels, even the inclined ones, having these shapes. Now, there are described in detail the different carriages 15 and 16 which are used in the present machine, in order to apply on the edges of each panel 12 and 22 the relative covering strip or flange 40 which, as particularly visible from Fig. 16, is wound around a reel 41 pivoted on a machine side arm 42 and is unwound automatically from such reel during each flanging cycle. From Fig. 4, in which the flanging carriage 15 is illustrated, it is noted that such carriage is substantially constituted by a flat base plate 43, shaped at its lower side with hollowed blocks 44 adaptable slidably in the corresponding rectilinear guides 10 and 11 of the block 7, and a further upper flat plate 45 is provided on to such plate, which further plate is slidable along corresponding transversal guides 46 of the same plate and urged by springs (not shown) to slide in the direction A with a limited stroke, such further plate supporting three different operative units of the flanging carriage , namely a guiding and feeding unit 47 adapted to provide for sliding and feeding the covering flange 40 in the sole feeding direction B, a glueing unit 48 adapted to apply glue or similar adhesive substances against the surface of edge of panel 12 and 22, on to which the strip or flange 40 is glued and a pressure unit 49 adapted to press the covering strip or flange 40 against such panel edge, coated with glue or adhesive substance, so as to glue such strip on to this latter. The guiding and feeding unit 47 is substantially constituted by a pair of lengthened blocks 50 and 51 fixed laterally on to the upper plate 45, on a position slightly moved away from and parallel to each other, and supporting different sliding rolls 52 thereby defining a sliding path in which the covering strip or flange 40 is introduced and lets fed automatically in the feeding direction B, such unit comprising also a powered feeding roll 53 with vertical axis and an opposite counter-roll 54 with vertical axis, fixed to a support block 55 secured to the plate 45, said rolls delimiting the sliding path for the covering strip or flange 40 thereamong, and making easier the feeding of the same strip or flange thanks to the continuous frictional contact with such edge determined by the resilient push of the roll 54 in the direction A. In turn, the glueing unit 48 is substantially constituted (see also Figs. 6 and 7) by a closed tank 56 for collecting glue or adhesive substance, into which at least one electric heating element (not shown) is contained, so as to heat adequately such glue or adhesive substance before the same be applied on the edge of the curved panel 12 and 22, and by at least a rotating roll 57 for distributing such glue or adhesive substance, which has a vertical axis and is swinging as it will be described later on, which is introduced in the tank 56 so as to draw the heated glue or adhesive substance therefrom and to distribute it on to the panel edge, said roll being joined at the lower part thereof with a lengthened shaft 58 being driven in rotation by the underlying motor 19 and reduction gear 17. This glueing unit 48 is also constituted by a rotating regulating handwheel 59 with vertical axis, housed on a vertical support structure 60 fixed to the upper plate 45 and joined laterally to the structure formed by the tank 56 and the roll 57 and provided to perform the function which will be described. Moreover, such rotating roll 57 is joined at its upper side with a set of movement transmission gears (not indicated), housed into and enclosed by a corresponding box-like envelope 61 and provided for transmitting rotation movement, with variable gear ratios, also to a possible further distributing roll (not indicated), in the case in which the presence of this roll is also requested for distributing glue or adhesive substance on to the covering strip or flange 40. The assembly tank 56-rotating distributing roll 57 is swinging pivoted on a horizontal axle 62 secured at the lower side of the support structure 60, in such a manner that when glue or adhesive substance is applied by the rotating roll 57 to the edge of panel 12 all the assembly tank- rotating roll may swing freely about this axle. Thanks to this swinging, such roll may adapt itself against the profile of each panel edge and may be kept adhering against it also in the case in which such edge of the panel 12 is not more orthogonal, thereby permitting a safe and effective distribution of glue or adhesive substance against such edge of the panel 12 and therefore an effective glueing of the covering strips or flanges against the corresponding panel peripheral edge. Also an arm 63 for limiting the swinging amplitude of the above assembly is swinging pivoted on the horizontal axle 62, such an arm bearing respective limit switches (not shown) assembled on to the upper plate 45. The height regulation of the distributing roll 57 with respect to the edge of the panel 12 and 22 is effected by rotating the regulating handwheel 59, which is fixed to a lengthened screw 64 housed on an upper stationary part 65 of the support structure 60 and can be screwed and unscrewed with respect to a corresponding nut screw 66 supported by a lower movable part 67 of said support structure, which in turn is joined to the assembly tank 56-distributing roll 57, and by acting on the handwheel such roll 57 is therefore displaced in height up to position it on the middle of the relative edge of the curved panel 12 and 22 (see Fig. 7), thereby arranging the machine for performing the flanging operation. Fig. 8 shows now the pressure unit 49 of the present machine, which is substantially constituted by a pair of pressure rolls 68 and 69 with vertical axis, independent and approached to each other, which are pivoted on to corresponding bent support brackets 70 and 71, in such a way to be turned toward the covering strip or flange being transported in this area, so as to compress such strip or flange against the panel peripheral edge to which glue or adhesive substance has been applied. In particular, each support bracket is pivoted and sprung on the end portion of a relative sprung support head 72 and 73, which in turn is supported by the stationary part 74 of the support structure, co-operating with a lower part 75 secured to the upper plate 45. A rotating regulating handwheel 76 with vertical axis is supported on the vertical movable part 74 of such support structure, which is fixed with a lengthened screw 77 screwable and unscrewable in a corresponding nut screw (not indicated) provided on the lower stationary part 75 of such support structure, in a manner that by actuating in rotation such handwheel 76 it is determined the height displacement of the pressure rolls, and therefore is regulated the position of the same rolls with respect to the position of the edge of the curved panel 12 and 22. Such rolls are positioned at the level of the middle of the edge of panel 12 and 22, thanks to their swinging capacity on the respective support brackets, so that it is possible to adapt such rolls to the different thicknesses of such edges, thereby ensuring always an effective and steady compression action of the covering strip or flange against the same edge, even when it isn't orthogonal, permitting this latter to be effectively glued against the panel edge. Fig. 5 shows the above mentioned flanging carriage 15 and the relative units 47, 48 and 49 of such carriage, together with the covering strip or flange being applied against the corresponding edge 78 of one panel 12 with the above described operative steps, and the Figure makes also visible an additional roll 79 for distributing glue or similar adhesive substance, co-operating with the roll 57 for applying these substances on to the covering strip or flange 40. Fig. 9 shows now the movable carriage 16 for trimming and butting the covering strips or flanges 40, which is substantially constituted by a pair of trimming units 80, 81 and a pair of butting units 82, 83 made as it will be described and supported by a corresponding pair of vertical and lengthened stanchions 84, 85, spaced away from each other in the longitudinal direction and secured to a horizontal flat base plate 86, shaped at its lower side with hollowed blocks 87 adaptable slidably on to corresponding rectilinear guides 10 and 11 of the block 7. In particular, such trimming units are constituted by a respective vertical flat plate 88 and 89 supporting the component parts which will be described and introduced slidably on to corresponding vertical rectilinear guides 90, applied against the surfaces turned toward each other of the corresponding vertical stanchions 84, 85, of which the flat plate 88 is situated at an upper position with respect to the position of the flat plate 89, so as to trim respectively the upper or lower edges of the covering strip or flange 40 being glued against the corresponding panel peripheral edge. As particularly visible also from Figs. 10, 11, 12 and 13, in which the upper plate 88 is shown, such plate may be displaced in height along the vertical guides 90 by means of a regulating handwheel 91, supported on the stanchion 84 and joined to a vertical lengthened screw 92, screwable and unscrewable in a corresponding nut screw 93 secured on the back side of the plate 88. The flat plate 88 is provided frontally with a curved extended hollowed slot 94, into which a corresponding regulating pad (not shown) is slidable, which can be locked in the established regulating position by means of traditional locking means, which is fixed on the back side of a further flat plate 95 provided with front and vertical rectilinear guides 96, in which a shaped plate 97 is slidable in the two directions C and D, and such sliding is obtained by means of a regulating system controlled by a regulating nut 98. Such shaped plate is provided with front and horizontal rectilinear guides 99, for sliding alternately a saddle 100 joined to a separate structure formed by a milling unit 101 and a feeler pin 102, the displacement of which in the two directions E and F is effected by means of regulating device integral with the shaped plate 97 and operated by a regulating ring nut 103. Furthermore, such flat plate 88 is shaped with its back surface in a manner to be able to slide horizontally and alternately along corresponding rectilinear guides 104, integral with the nut screw 93, and is shaped also with a projected front bracket 105, the function of which will be described later on. The milling unit 101 is substantially constituted by a rotating milling cutter 106 with horizontal axis, adapted to trim namely to cut flushing the upper projected part of each covering strip or flange glued on position, said milling cutter being secured to a shaft 107 inserted into a box-like envelope 108 integral with the saddle 100 and operated with variable rotation speeds by a motor unit (not shown) also inserted in the box-like envelope 108. In turn, the feeler pin 102 is formed by a mechanical feeler member 109 housed into a vertical envelope 110, arranged at the end portion of a lengthened plate 111 and fixed to the box-like envelope 108 at a position approached to that of the milling cutter 106, said feeler member being movable in height with respect to the milling cutter 106, by means of a regulating ring nut 112 acting on the same feeler member, with subsequent locking in position of this assembly by means of a locking lever 113. The function of the feeler member is to be laid with its tapered lower end portion 1 14 on the upper edge of each panel 12 (see Fig. 11), so as to determine the precise vertical position where the milling cutter 106 must be positioned to trim flushing the panel upper surface, while the milling cutter cutting position is determined (see always Fig. 11) by laying the peripheral edge of the panel 12 on to the projected bracket 105. In this way, by acting on the mechanisms providing for the displacements in the two vertical directions, the two horizontal directions and the curved position (along the slot 94) depending on the respective type of panel to be flanged (curved, flat, mixed flat-curved or inclined panel), the milling cutter 106 is firstly positioned flushing the panel peripheral edge, which is laid on to the projected bracket 105, and flushing the upper surface of the same panel, on to which the feeler member 109 has been laid at a position moved away with respect to such milling cutter. Thereafter, the milling cutter 106 is driven in rotation thereby providing trimming the projected part of the covering strip or flange, and permitting to perform with absolute accuracy the same operation for further panels of the same kind. The same operations are performed for trimming the projected lower part of each covering strip or flange 40 being glued in position, in this case by utilizing another rotating milling cutter (not visible from the Figures), which is supported in rotation by the lower flat plate 89 of the trimming unit 81, and is driven in rotation at the same time of the preceding milling cutter 106, and is also aligned with respect to this latter at its lower side. Also such lower flat plate 89 is shaped like the upper flat plate 88 and is provided with the same components of this latter, which are arranged in an upside down turned position, except the fact that in this case the regulating handwheel 91 isn't provided. Fig. 9 makes it visible the butting units 82 and 83 providing for cutting the projected parts of the covering strips or flanges being glued in position, in a manner that these latter are cut flushing the peripheral edges of the panel 12 or 22. Each butting unit is substantially constituted by a box-like envelope 114 housing a rotating milling cutter 115 with horizontal rotation axis, as well as the relative powered means for driving in rotation with variable speeds the same milling cutter, said box-like envelope being supported by an orthogonal support bracket 116 applied against the outer surface of the associated stanchion 84, 85 and secured to the lower end portion of a rod 117 of a corresponding pneumatic cylinder 118 or the like, applied on the upper part of the same stanchion. Each milling cutter 115 is positioned turned outward and may be displaced both in the longitudinal direction, in either one of the directions G and H, while sliding the milling cutter in the box- like envelope 114 along corresponding longitudinal guides (not visible), and in the vertical direction in either one of the directions I and L, by actuating the pneumatic cylinder 118 and therefore by lifting or lowering the bracket 116 in a corresponding manner. Moreover, also in this case a feeler member 119, in the example of mechanical type, is provided, which bears on the panel peripheral edge at the butting area of such edge, so as to allow to cut the edge projected part by means of the milling cutter 115, which has been adequately spaced away from the feeler member 119 by acting on a locking lever 120, the looseness of which allows to change the position and the distance of the same milling cutter with respect to the feeler member. The operation of the so realized flanging-trimming machine appears evident from Fig. 16, in which it is noted a curved panel 12 to be flanged which has been applied and kept in position on to the movable carriages 13 and 14, and to the peripheral edge 78 of which the covering strip or flange 40, wound around the reel 41, must be glued. Initially, both the movable carriages 15 and 16 are displaced in the direction M, in a manner that the movable carriage 15 drags the covering strip or flange 40 and arranges and keeps it temporarily on the right terminal position of the panel edge 78, while the carriage 16 is displaced beyond the panel 12, so as to arrange itself beyond the head terminal position. Then, the carriage 15 is brought back slowly in the direction N on its starting position, thereby providing for in succession the applying of the glue or adhesive substance on to the panel peripheral edge 78 and the compression and consequent glueing of the covering strip or flange 40 against such panel edge 78. At a short distance from the movable carriage 15, also the movable carriage 16 is displaced in the same direction, by arranging itself with its left butting milling cutter 115 flushing the cutting position of the covering strip or flange 40. Thereafter, such milling cutter is driven in rotation thereby providing for cutting and butting the covering strip or flange in this position, so that the trimming milling cutters 106 of this latter movable carriage determine the trimming of the upper and lower projected parts of such so glued covering strip or flange. These operating steps continue until the carriage 15 has glued the covering strip or flange 40 for the entire length thereof to said peripheral edge 78, and displaces and stops itself beyond the left terminal position of the same edge, while in turn the carriage 16 stops itself in the position in which its right butting milling cutter arranges itself flushing the cutting position of the covering strip or flange 40, so that such milling cutter is driven in rotation by determining the cutting and butting of the covering strip or flange 40 in this position. At this point, the machine operation is stopped, so as to allow to flange with the same operative steps a further edge of the same panel or other panels. Figs. 18 and 19 show now a flat and narrow panel 121 which may be flanged with the present machine and which is kept in position by a set of machine movable jaws 122, permitting it to be flanged both along its longer peripheral edges (see Fig. 18) and its shorter peripheral edges, (see Fig. 19). The remaining Figures 20, 22-31 show now different shapes of panels which may be flanged with the present machine, of which in the Fig. 20 it is noted a flat panel 123 with a peripheral edge provided with a rounded surface portion 124, in the Figs. 22-25 there are noted curved panels 12 with different curvature diameters, in the Figs. 26 and 28 there are noted flat panels 123 respectively with a slightly curved portion 125 and straight edge (Fig. 26), with rounded peripheral edges 126 (Fig. 27) e with slightly curved portion 125 and beveled edge 127 (Fig. 28). In the Fig. 21 it is noted schematically the arrangement of a curved panel 12 with curvatures with different diameters on the present machine, while in the Fig. 30 it is noted a small furniture 128 formed by several flanged flat panels 123, with flat peripheral edges, in the Fig. 29 it is noted a flat panel 123 with inclined edges 129 with identical and symmetrical inclinations, and in the Fig. 31 it is noted a small furniture 130 formed by several flat panels 123 with inclined edges 129. Finally, in the Fig. 32 it is shown another possible embodiment of the flanging-trimming machine according to the invention, in which it is noted that in this case the movable plates 15 and 16 have been eliminated, and the relative guiding and feeding unit 47, the glueing unit 48, the pressure unit 49, the trimming units 80, 81 and the butting units 82 and 83 and the relative support structures have been arranged, in succession to each other, on to a lengthened stationary base 131 positioned parallel to and slightly spaced away from the rectilinear guides 8 and 9, on to which a lengthened movable carriage 132 is sliding alternately, which is provided with the movable , carriages 13 and 14 for supporting and applying in position each panel to be flanged. In this way, all the operative steps occur again with the above described sequence, by keeping still all the cited operative units and displacing each panel to be flanged with respect to these latter. Therefore, the so realized flanging-trimming machines allow to flange automatically not only flat panels, but also curved panels with different curvatures and rounded and/or inclined edges, with a simple and compact constructive structure and a natural productive versatility and flexibility.

Claims

CLAIMS 1. Flanging-trimming machine of flat, curved, mixed flat-curved and inclined panels, adapted to apply on a not removable way covering strips or flanges against the peripheral edges of the same panels, comprising guiding and feeding means in which said covering strips or flanges, which are wound on to collecting means, are passed and fed progressively, glueing means adapted to apply glue or similar adhesive substances contained into tanks on to the peripheral edge of said panels, compression means adapted to compress and let adhere said covering strips or flanges to said peripheral edge coated with glue or adhesive substances, trimming means adapted to cut the upper and lower projected parts of said covering strips or flanges, and butting means adapted to cut the side projected parts of said covering strips or flanges, characterized by support means (13, 14) of each panel to be flanged, and characterized by first support means (15) for said guiding and feeding means (47), said glueing means (48) and said compression means (49), and second support means (16) for said trimming means (80, 81) and said butting means (82, 83), said first and said second support means (15, 16) being displaceable with a relative movement with respect to said panel support means (13, 14), to determine in succession the applying of said covering strips or flanges (40) on to said panel peripheral edges (78) and the trimming and butting of the same covering strips or

flanges.

2. Flanging-trimming machine according to claim 1, characterized in that said support means comprise at least a pair of movable carriages (13, 14) spaced away from each other and slidable in a longitudinal direction along guides (8, 9) arranged parallel and spaced away laterally with respect to said first and second support means (15, 16), each one of said movable carriages (13, 14) being constituted by a vertical flat plate (23) joined to a horizontal flat plate (24) adaptable slidingly into said rectilinear guides (8, 9), said vertical plate (23) being shaped with lengthened shaped through slots (25, 26, 27, 28, 29), provided with different pattern for supporting panels (12, 22, 123) having different configurations by means of pins (30, 31) or similar locking means, which are arranged from time to time into at least a pair of said through slots ((25, 26, 27, 28, 29), with different combinations depending on the different configurations of said panels (12, 22, 123), said vertical plate (23) being also provided with at least a movable bracket (33), swinging from a lowered rest position to a raised working position, for laying the edge of the respective panel to be flanged thereon, and for defining the "zero" or starting position of said panel, in which it must be flanged namely coated with said covering strip or flange (40).

3. Flanging-trimming machine according to claim 2, characterized in that said first support means (15) comprise a flat base plate (43) shaped at its lower side with means (hollowed blocks 44) for sliding on corresponding rectilinear guides (10, 11) arranged parallel and spaced away with respect to said guides (8, 9), and provided with powered means (17) housed into a movable bush (19) slidable in a longitudinal direction by means of tracks, bar or the like (21), to the upper surface of which plate (43) there are secured said guiding and feeding means (47) formed preferably by lengthened blocks (50, 51), by sliding rolls (52) and by at least a powered feeding roll (53), and there are also secured said glueing means (48) and said compression means (49), of which said glueing means are formed preferably by collecting means (56) for glue or adhesive substance and by distributing means (rotating rolls 57, 79) for glue or adhesive substance against the peripheral edge (78) of said panel (12, 22, 123) or against said covering strip or flange (40), and said compression means (58) are formed by pressure rolls (68, 69) adapted to compress said covering strip or flange (40) against said panel peripheral edge (78).

4. Flanging-trimming machine according to claim 3, characterized in that said flat base plate (43) is realized like a lengthened stationary base (131).

5. Flanging-trimming machine according to claim 4, characterized in that said collecting means (56) and said distributing means (57, 79) are mounted swinging on to a structure (60), to adapt themselves against the profile of each panel peripheral edge (78), and characterized by means (arm 63) for limiting the swinging amplitude of said collecting means (56) and distributing means (57, 79), as well as by regulating means (rotating regulating handwheel 59) housed into said structure (60) for changing the position in height of said distributing means (57, 79) with respect to said panel peripheral edge (78).

6. Flanging-trimming machine according to claim 4, characterized in that said pressure rolls (68, 69) are pivoted on to corresponding sprung support brackets (70, 71), which are swinging pivoted on a support structure (74, 75), said pressure rolls (68, 69) being adjustable in height by means of regulating means (rotating regulating handwheel 76) with respect to the position of the panel peripheral edge (78).

7. Flanging-trimming machine according to claim 3, characterized in that said second support means (16) comprise a flat base plate (86) shaped at its lower side with means (hollowed blocks 87) for sliding along said rectilinear guides (10, 11), and to the upper surface of which there are secured at least two vertical and lengthened stanchions (84, 85), spaced away from each other in the longitudinal direction, adapted to support said trimming means (80, 81) and said butting means (82, 83).

8. Flanging-trimming machine according to claim 7, characterized in that said flat base plate (86) is provided on to said lengthened stationary base (131).

9. Flanging-trimming machine according to claim 8, characterized in that said trimming means (80, 81) are constituted by a respective vertical flat plate (88, 89) slidable vertically along the corresponding vertical stanchions (84, 85) and applied against the surfaces turned toward each other of the same vertical stanchions, of which the flat plates (88, 89) are situated on the upper and lower position of the respective stanchions (84, 85), and at least one of said flat plates (88) is displaceable in height by regulating means (regulating handwheel 91), each flat plate being provided frontally with at least a hollowed slot (94) with curved extension, for sliding a further flat plate (95) provided with guiding means (96) for vertical sliding of a shaped plate (97), by regulating means (regulating nut 98), said shaped plate (97) being provided with guiding means (99) for horizontal sliding of a saddle (100) joined to a structure formed by a milling unit (101) and a feeler pin (102), and the displacement of which is regulated by regulating means (regulating ring nut 103), said flat plate (88) being also shaped with a projected front bracket (105).

10. Flanging-trimming machine according to claim 9, characterized in that said milling unit (101) is constituted by at least a trimming rotating milling cutter (106), supported by powered means with variable speed, housed into a box-like envelope (108) integral with said saddle (100).

11. Flanging-trimming machine according to claim 9, characterized in that said feeler pin (102) is formed by at least a feeler member (109) adapted to be laid on to the upper edge of each panel, to determine the precise vertical displacement position of said trimming milling cutter (106), and said projected bracket (105) acting as feeler member for the cutting position of said milling cutter, determined by laying the panel peripheral edge (78) on to the same projected bracket, said feeler member (109) being housed into a vertical envelope (110) fixed on to said box-like envelope (108), at a position approached to said milling cutter (106) and being displaceable in height with respect to said milling cutter (106) by regulating means (regulating ring nut 112).

12. Flanging-trimming machine according to claim 11, characterized in that said butting means (82, 83) are each constituted by at least a rotating milling cutter (115) which is driven, with variable rotating speeds, by powered means housed into a corresponding box- like envelope (114), supported by an orthogonal support bracket (116) applied against the outer surface of the associated vertical stanchion (84, 85) and operated for being displaced in height by control means (pneumatic cylinder 118), said milling cutter (115) being positioned turned outward ed being displaceable both in the longitudinal direction, by sliding into said box-like envelope (114), and in the vertical direction by said regulating means (91), said milling cutter (115) being also associated with a feeler member (119), adapted to be laid on to the panel peripheral edge (78) so as to position the same milling cutter in the required cutting position, regulating means (locking lever 120) being also provided to change the position and the distance between said milling cutter (115) and said feeler member (119).