CN102672928A - Intelligent automatic cleaning control method for fully electric injection molding machine and system - Google Patents
Intelligent automatic cleaning control method for fully electric injection molding machine and system Download PDFInfo
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- CN102672928A CN102672928A CN2012101383401A CN201210138340A CN102672928A CN 102672928 A CN102672928 A CN 102672928A CN 2012101383401 A CN2012101383401 A CN 2012101383401A CN 201210138340 A CN201210138340 A CN 201210138340A CN 102672928 A CN102672928 A CN 102672928A
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Abstract
The invention discloses an intelligent automatic cleaning control method for an injection molding machine. After the material tube temperature, the injection molding machine work mode, the injection seat position and the screw rod cold starting protection time meet the cleaning conditions, an injection servo motor is driven to operate in a positive direction for driving a screw rod to realize injection into the air, and the injection into the air is completed when the screw rod reaches the most front end of a material tube; a material storage servo motor is driven to store materials, the injection servo motor is driven to operate in a reverse direction for enabling the screw rod to reset when the melt pressure in the material tube reaches the preset cleaning back pressure value, and the cleaning and material storage can be completed; and the injection into the air and the cleaning and material storage are alternately carried out until the cleaning is completed. The invention also provides a device for realizing the method. The device mainly comprises a main controller, an injection servo controller, a material storage servo controller, a temperature control module, a frequency converter, a position sensor, a pressure sensor and a material tube heating device. The method and the device provided by the invention solve the problems that in the technical process of completing the manual cleaning through the experiences of operators, the screw rod can be easily damaged, the product quality and the precision are reduced, and the production efficiency is low.
Description
Technical field
The present invention relates to the injection machine field, be specifically related to a kind of automatic cleaning control method and system that is used for injection machine to the barrel internal screw.
Background technology
Screw rod is the vitals of injection molding machine, and in injection molding process, screw rod is mainly accomplished two actions: plasticizing metering and injection pressurize.At the plasticizing metering phase; The screw rod that is arranged in barrel is rotated in the drive of plasticizing motor (for electric injection molding machine) or hydraulic motor (for the fluid pressure type injection machine); The plastics materials that is got into barrel by the barrel feed opening can be carried the front area that accumulates in barrel by the barrel afterbody to the front portion under the conveying effect of screw channel.In the process that screw rod rotation is carried, material in the stirring of screw channel sword, shear and be installed under the heat effect of barrel appearance border heater, transform to molten state from glassy state.Because gathering of barrel head molten plastic makes that the barrel head pressure is increasing; When reaching the back pressure value of setting; The injecting motor (for electric injection molding machine) that links through mechanical driving device and screw rod will reverse rotation or the rod end chamber oil-feed of hydraulic injection cylinder (for the fluid pressure type injection machine) make the piston rod rollback; The screw rod of through intermediate mechanical transmission device driven rotary is while rotating straight line rollback backward, supplies injection to use so that will plastify the front end that good melt is stored in barrel.The stroke that screw rod is retreated is set by the needed notes shot of one-shot forming plastic member product.At the injection packing stage; Injecting motor (for electric injection molding machine) is rotated in the forward or the plunger shaft oil-feed of hydraulic injection cylinder (for the fluid pressure type injection machine) makes piston rod advance; Driving screw rod through the intermediate mechanical transmission device advances; The molten plastic that accumulates in the barrel front end with the pressure of setting and the die cavity of speed injection progressive die tool, can be obtained required goods through behind the cooling curing.
In recent years, the appearance requirement of plastic and dimensional accuracy are increasingly high.In order to realize the precision injection molding to plastic, many molding machines manufacturer has developed all-electric injection moulding machine.Because full electric injection molding machine has adopted servo control technique, compares with the fluid pressure type injection machine, the goods of being produced have higher dimensional accuracy and repeatable accuracy.The accurate plastic that obtain that volume is little, wall is thin, dimensional accuracy is high from the angle of injection moulding machine, must be provided safeguard by two parts, and one be reliable control system, two precision for the mechanical components and parts of composition injection machine body.
As the of paramount importance parts of injection moulding machine; Screw rod can be accurately accomplished injection and plasticizing meter action with technological parameters such as given speed, pressure, position and times, has decisive role for dimensional accuracy, presentation quality, the quality precision of plastic.In the plastic production process, usually run into following three kinds of situation: the production task of (1) this batch plastic product is accomplished, and needs more conversion materials; (2) machinery requirement closes the electricity shutdown, and start is produced to wait for next time; (3) user selects to clean barrel according to arts demand.In order to guarantee the kinematic accuracy of screw rod, be coated on screw surface after the material degraded that prevents to accumulate in the barrel, influence Products Quality and precision, just must before new material is changed or before shutting down the material that accumulates in the barrel be cleaned.
At present, the injection molding process personnel carry out with manual work pattern the cleaning of barrel, but the cleaning under the manual work pattern is judged completion according to operator's experience fully; Waste time and energy; Can not slap-up buildup remaining in the barrel be removed away, even, be easy to cause damage screw rod because operator's carelessness meeting maloperation machine is perhaps forgotten the work that barrel cleans; There is bigger potential safety hazard; Had a strong impact on the instructions for use of injection mo(u)lding to the high-accuracy property of screw rod, directly cause the reduction, machine overall performance of goods precision and presentation quality to descend, production efficiency low, this influence is for precision injection molding production more so.
Summary of the invention
The present invention provides a kind of intelligence that is applicable to the full electric injection molding machine injection mo(u)lding automatically cleaning control method and system, and its purpose is to overcome and relies on operator's experience to accomplish the technical process of manually cleaning and the screw rod that causes is damaged easily, product quality and precision reduces, production efficiency is low shortcoming.
Injection machine intelligence is cleaning control method automatically, may further comprise the steps:
Heating injecting machine material tube to temperature reaches predetermined temperature, and the seat of penetrating of injection machine is retreated into the back extreme position, and the control injection machine gets into manual work pattern, and barrel temperature starts screw rod cold start-up guard time up to arriving the scheduled time after reaching predetermined temperature;
Thereby ordering about injection servomotor forward running drive screw rod carries out sky is injected; When screw rod arrives barrel foremost the time to sky injection, the injection servomotor stops the forward running, accomplishes and once sky is injected;
After injection is accomplished to sky, order about the storing servomotor and carry out storing; When the melt pressure in the barrel reaches preset cleaning back pressure value, order about injection servomotor antiport and make screw compulsory return back to the injection original position in the storing process, the injection servomotor stops antiport, accomplishes and once cleans storing;
Sky injection and cleaning storing are hocketed till reaching cleaning completion condition;
After reaching cleaning completion condition, carry out once sky being injected so that remaining defective material in the barrel is cleaned discharge barrel, screw rod rests on barrel foremost again, and cleaning procedure is finished automatically.
Said cleaning completion condition is that the material in the barrel has been cleaned to finish or clean the storing number of times and reaches predetermined wash number.
Realize the said injection machine intelligence automatic cleaning control system of cleaning control method automatically, comprise master controller 23, PLC controller 26, injection servo controller 15, storing servo controller 18, input/output module 32, temperature control modules 31, frequency converter 24, A/D modular converter 14, electromagnetic proximity switch 29 and irony slide block 30, position sensor 6, pressure sensor 7, thermocouple 2, material tube heater 1;
Input/output module 32 is used for sending master controller 23 to after barrel temperature with the closed information of electromagnetic proximity switch 29 and temperature control modules 31 feedbacks converts data signal into; Heating instruction that master controller 23 is sent and Frequency Converter Control instruction transformation are to send temperature control modules 31 and frequency converter 24 after the analog signal respectively to;
Position sensor 6 is used to gather the screw position information of injection machine, and sends said injection servo controller 15 to;
Pressure sensor 7 is used to gather the anterior melt pressure information of barrel, and sends said injection servo controller 15 to;
Thermocouple 2 is used to gather the temperature information of barrel heating, and sends the said temperature control modules 31 that sends to;
Storing servo controller 18 is used to receive the running instruction of said main controller 23, and the storing servomotor 16 of control injection machine carries out storing under said running instruction effect.
Material tube heater 1 receives the heating instruction of temperature control modules 31, is used for barrel 4 is heated.
Compared with prior art, the present invention has following advantage:
1, the present invention has overcome the work of cleaning barrel according to experience single-step operation machine by the technologist; Rely on servo controller and control program two single step actions of sky injection and plasticizing are serially connected according to the technology logical sequence closely with former cause technologist's cycling; Realized the function of automatic cleaning barrel; Protect the vitals of injection moulding machine---screw rod, improved goods precision and presentation quality to a certain extent.
2, the present invention is directed to three kinds of situation that need to clean barrel in the production process; Rely on the intelligentized judgement of control program, prompting user to get into automatic cleaning barrel program; Whether intelligentized judgement defective material all carries the cleaning of accomplishing and remaining defective material for the last time from the afterbody to the front portion; The stability and the reliability of barrel work have been guaranteed to clean; Having overcome by the operator relies on experience to judge that whether defective material in the barrel cleans up, cleans the possibility that maloperation or operator in the barrel process forget the barrel cleaning, has overcome the potential safety hazard of bringing therefrom.Simultaneously, the user also can under the manual work pattern of machine, select to clean automatically the work that the barrel program is cleaned defective material in the barrel automatically according to arts demand, has increased the flexibility and the applicability of operation.
3, the automatic cleaning system and the control method of the present invention's employing; Be on the basis of the injection moulding machine of main flow control scheme, to rely on the automatic cleaning function module subprogram of design, exploitation to control injecting motor to move according to predetermined technology logical sequence with the plasticizing motor and realize; Identical with existing full electric injection molding machine basic machine structure, controller; Do not install, design, increase other mechanical components and parts and controller hardware additional; Just developed corresponding functional software module, increased a control subprogram with automatic cleaning function, the subprogram activation of exploitation is reliable, friendly interface, easy to use; Injection machine is used producer, need not append additional investment.
4, the present invention has increased an automatic cleaning process process that is totally independent of the injection moulding production process on technology; Can not increase the net cycle time of phase weekly of goods; Owing to shortened the time of artificial cleaning barrel,, saved the production time greatly not increasing under the periodic duty prerequisite of cycle time; Improved production efficiency, operating personnel free from heavy manual cleaning.
Though 5, the present invention is directed against full electric injection molding machine, principle, method from the present invention realizes are applicable to the electric mixed injection machine of fluid pressure type or liquid too, can't produce unconformable problem because the type of injection machine is different.
Description of drawings
Fig. 1 is the structural representation of automatic cleaning control system of the present invention.
Fig. 2 is the schematic diagram of automatic cleaning system process control of the present invention.
Fig. 3 is an integral control algorithm schematic flow sheet of the present invention.
Fig. 4 is the control procedure algorithm flow sketch map of automatic cleaning of the present invention.
The specific embodiment
Further the present invention is elaborated below in conjunction with the accompanying drawing and the specific embodiment.
Referring to Fig. 1, injection machine intelligence cleaning control system automatically comprises master controller 23, PLC controller 26, injection servo controller 15, storing servo controller 18, input/output module 32, temperature control modules 31, frequency converter 24, A/D modular converter 14, electromagnetic proximity switch 29 and irony slide block 30, position sensor 6, pressure sensor 7, thermocouple 2, material tube heater 1;
Input/output module 32 is used for sending said master controller 23 to after barrel temperature with the closed information of said electromagnetic proximity switch 29 and said temperature control modules 31 feedbacks converts data signal into; Heating instruction that said master controller 23 is sent and Frequency Converter Control control instruction send said temperature control modules 31 and said frequency converter 24 respectively to after converting analog signal into;
Position sensor 6 is used to gather the screw position information of injection machine, and sends said injection servo controller 15 to;
Pressure sensor 7 is used to gather the anterior melt pressure information of barrel, and sends said injection servo controller 15 to;
Storing servo controller 18 is used to receive the running instruction of said main controller 23, and the storing servomotor 16 of control injection machine carries out storing under said running instruction effect;
Thermocouple 2 is used to gather the temperature information of barrel heating, and sends the said temperature control modules 31 that sends to;
Material tube heater 1 receives the heating instruction of temperature control modules 31, is used for barrel 4 is heated.
The cleaning parameter mainly comprises cleaning pattern, cleaning speed, cleaning pressure, wash number, cleaning storing speed, cleans back pressure, cleans astern speed.
Full electric injection molding machine intelligence of the present invention cleaning control system automatically combines to form injection machine intelligence automatic cleaning system with injecting assembly and the storing assembly that injection machine carries, and realizes the automatic washing to injection machine.Injecting assembly that injection machine carries and storing assembly mainly comprise hopper 5, barrel 4, screw rod 3, ball-screw 9, injection servomotor 8, plasticizing servomotor 16 and penetrate a variable-frequency motor 25; Said hopper 5 is located at the feed opening top of barrel 4; The outside border of barrel is provided with heating collar 1 that the plasticizing heat is provided and the thermocouple 2 that the barrel heating-up temperature is detected; Barrel inside is provided with the screw rod 3 that injection power is provided and plastifies metering; Ball-screw 9 and screw rod 3 are connected through bearing; The pressure sensor 7 that is used for detecting in real time the plastic cement melt pressure is located at the junction of ball-screw 9 and screw rod 3; Injection servomotor 8 is connected with ball-screw through driving gear 11, profile of tooth synchronous belt 10, driven gear 13, injection nut 12; Be located at injection ball-screw and screw rod junction in order to the position sensor 6 that feeds back current screw position accurately, in real time; Storing servomotor 16 is connected with screw rod 3 through driving gear 17, profile of tooth synchronous belt 20, driven gear 21, plasticizing nut 22, penetrates a variable-frequency motor 25 and links to each other with board slide rail 28 through leading screw 27, and slide rail can drive the barrel, injection components and parts, the storing components and parts integral body that are installed on the slide rail and be free to slide forward or backward on the board base.
With reference to Fig. 2, the control principle of this automatic cleaning system is: at first, in the sampling period, 23 pairs of master controllers are sampled in the cleaning parameter of 19 li inputs of user interface by the user, receive the cleaning parameter.If the user does not carry out redjustment and modification to the cleaning parameter, will carry out according to the technological parameter of acquiescence when then system is cleaned.23 pairs of production processes of master controller are monitored, in case cleaning task has demand automatically, the automatic cleaning procedure module of master controller 23 will be activated.Then; 23 pairs of master controllers get into the condition of cleaning automatically and judge: (1) master controller 23 is through carrying out communication with Programmable Logic Controller (PLC) 26; Whether detection machine is at manual work pattern; If not at manual work pattern, then point out the user to carry out mode of operation and switch adjustment, wherein the transmission route of machine manual work pattern status signal is that the user receives through the PLC transmission and by master controller 23 from the action button input; (2) through carrying out communication with NCUC bus and input/output module 32, whether the seat back is penetrated in detection spacing closed near switch 29, if do not have closure near switch; Then master controller 23 is given an order to input/output module 32, and the analog quantity delivery outlet via input/output module 32 is transferred to frequency converter 24; Frequency converter 24 is exported to variable frequency synthesiser amount signal and is penetrated a motor 25, and penetrating a motor 25 must be electric, and driving injection device integral body retreats into penetrates a back extreme position; At this moment; Penetrate magnet proximity switch 29 closures of rationing the power supply behind the seat, through signal feedback, master controller 23 receives closure signal and through judging; Penetrate a variable-frequency motor 25 outages through frequency converter 24 controls and shut down, wherein penetrate a transmission route of back spacing electromagnetic proximity switch 29 status signals for also finally receiving by master controller 23 via input/output module 32; (3) through carrying out communication with NCUC bus and input/output module 32; Whether the barrel heating-up temperature that is relatively detected by thermocouple 2 arrives design temperature; If temperature does not reach; Temperature control modules 31 continues under the control of master controller 23 heater 1 energising heating; Get into next step again up to arriving design temperature, wherein the feedback temperature signal transmission route of thermocouple 2 is transferred to input/output module 32 after to be thermocouple 2 with the current analog amount signal of detected representative heating-up temperature amplify signal through the power amplification function of temperature control modules 31; A/D translation function via input/output module 32 converts digital quantity into, is transferred to master controller 23 by input/output module 32 again; (4) after barrel 4 heating-up temperatures arrive, whether timing is accomplished at the screw rod cold start-up protection timer setting-up time of program set inside in master controller 23 monitoring.Have only above four conditions to satisfy simultaneously, just get into next step.
Then, the user adjusts and is provided with cleaning pattern and technological parameter based on the information of user interface.Automatically cleaning procedure is carried out; Master controller 23 sends instruction through the NCUC bus to injection servo controller 15; Make injection servomotor 8 drive screws 3 carry out empty action of injection according to predetermined cleaning speed, cleaning pressure; In this injection process, feed back to injection servo controller 15 by position sensor 6 the position signalling that screw rod 3 is current and the pressure signal of pressure sensor 7 via A/D modular converter 14, simultaneously; Absolute type encoder by injection servomotor 8 feeds back to injection servo controller 15 with the tach signal that senses; Further feed back to master controller 23 again by injection servo controller 15, master controller 23 is realized the adjustment control of screw position, cleaning pressure, cleaning speed controlled quentity controlled variable according to the data-signal that receives, thereby makes screw rod 3 in predetermined stroke, to carry out action of injection with predetermined cleaning pressure, cleaning speed; When 3 pairs of empty injections of screw rod arrive barrel 4 foremost; Send forward running stop signal by master controller 23 to injection servo controller 15, make injecting motor 8 stop the forward running, screw rod 3 halts.Then, master controller 23 sends the running instruction through the NCUC bus to storing servo controller 18 once more, makes storing servomotor 18 drive screws 3 according to predetermined rotary speed rotation; Plastics are carried to the front portion from barrel 4 afterbodys under the conveying of screw channel; Carry out the storing action, in this process, the barrel 3 anterior melt pressure signals that pressure sensor 7 detects feed back to injection servo controller 15 via A/D modular converter 14; Further feed back to master controller 23 again by injection servo controller 15; Master controller 23 will receive measured value and compare with preset back pressure value, when reaching preset cleaning back pressure value, sent the signal of antiport to injection servo controller 15 by master controller 23; Make injecting motor 8 antiports; Screw rod 3 is forced rollback up to the injection original position, and master controller 23 sends the antiport stop signal to injection servo controller 15, accomplishes and cleans storing.In back off procedure, injecting motor 8 drive screws 3 straight line rollbacks make barrel 4 anterior melt pressure all-the-time stable in preset cleaning back pressure value.Like this, just under the Collaborative Control of master controller 23, injection servo controller 15, storing servo controller 18, make injecting motor 8 reverse rotations and storing motor 16 rotary joints drive, rotate the action of rollback completion cleaning storing while drive screw rod 3.Need to prove that above-mentioned automatic cleaning process is injected sky and the storing action is alternately carried out, till the condition that the defective material cleaning is accomplished in primary control program judgement barrel 4 satisfies; Send instruction by master controller 23 this moment, makes storing motor 16 shut down, and injecting motor 8 is rotated in the forward; Drive screw 3 carries out for the last time sky being injected; Remaining defective material in the barrel 4 is cleaned discharge barrel 4, and screw rod 3 rests on barrel 4 foremost, and cleaning procedure is finished automatically.In Fig. 2, master controller 23 adopts NCUC BUS fieldbus protocol specification with the data communication of other control modules.NCUC BUS fieldbus protocol specification is the inner data communication protocol national standard of machine tool numerical control system that State Administration for Quality Supervision and Inspection and Quarantine and national standardization administration committee unite issue.Arrow is represented data flow among Fig. 2.
With reference to Fig. 3, these automatic cleaning control system overall flow following steps:
SA000: injection machine carries out injection moulding production according to predetermined technological parameter.
SA100: according to production process, be provided with three kinds and possibly clean the situation that gets into automatic cleaning procedure, be respectively SA101 situation 1, SA102 situation 2, SA103 situation 3.
SA101 situation 1: when production task begins, in user interface, set the number of tasks of this batch production by the user; Ignore this association of input like the user, then giving tacit consent to the qualified non-defective unit number of this batch production is 1000; After the input, machine is counted production according to the preset task number, reaches in case the non-defective unit of setting is counted to, and then whether gets into automatic cleaning procedure by the interface prompt user;
SA102 situation 2: after machine operation power supply stop botton was pressed, whether machine prompting user before shutdown, cleaned barrel automatically before shutting down;
SA103 situation 3: in process of production, the user also can select to get into automatic cleaning procedure defective material in the barrel is cleaned according to the needs that use.
SA200: the condition judgment that gets into automatic cleaning procedure: whether (1) machine is in manual work pattern; (2) whether the barrel heating-up temperature arrives design temperature; (3) whether screw rod cold start-up guard time arrives setting-up time; Whether (4) penetrate seat retreats to move to and penetrates seat back limit; Under the situation that above-described four conditions all satisfy, change next step; Do not satisfy if any any one condition, then machine is in holding state, till condition satisfies, just changes next step.
SA300: the user selects automatic cleaning pattern; Be divided into two kinds of patterns: (1) screw rod total travel is cleaned; Under this kind pattern; Screw rod will clean barrel with the range reciprocating motion of screw rod according to the cleaning pressure of the cleaning speed of setting, setting, the cleaning storing rotary speed of setting, the cleaning storing back pressure of setting automatically, and material is cleaned and finishes in barrel; (2) clean with set point number; Under this kind pattern, screw rod will clean barrel according to the cleaning storing rotary speed of the cleaning astern speed of the cleaning speed of the cleaning pressure of the wash number that is no more than setting, setting, setting, setting, the setting technology stroke reciprocating with screw rod automatically; The cleaning model of machine acquiescence cleans for the screw rod total travel.
SA400: the user comprises the setting and the adjustment of automatic cleaning process parameter: cleaning speed, cleaning pressure, wash number, cleaning storing rotary speed, clean the storing back pressure, clean intermission of accomplishing, to cleaning pattern 2 screw rod astern speed when effectively cleaning automatically; Like the user adjustment is not set, machine will move according to the parameter of acquiescence; Cleaning speed is defaulted as 10%, cleaning pressure is defaulted as 20%, clean storing rotary speed 20%, clean storing back pressure 10MPa, wash number be defaulted as 5 times, to clean the intermission of accomplishing first be 60s, be defaulted as 30s with intermission that last time, cleaning was relatively accomplished, the screw rod astern speed is defaulted as 2% when cleaning.
SA500: the user imports in user interface and cleans fill order automatically; Automatically cleaning the barrel program carries out; Screw rod carries out under the driving of injecting motor empty action of injection; Then, drive at the rotary joint of the reverse rotation of injecting motor and plasticizing motor on one side and rotate rollback down and carry out storing and move, and injection and storing move and hocket.
SA600: in each storing stroke; Controller can clean the end condition of accomplishing to barrel and judge; Be divided into two kinds of situation: (1) is when the first storing of screw rod after automatically cleaning procedure starts; If screw position rests on the time of certain original place, the position rotation in the screw stroke when surpassing the cleaning of setting first and accomplishing the intermission, machine will be judged in the barrel that defective material cleans and accomplish and carry out for the last time the sky injection is cleaned action automatically and will be finished; (2) when screw rod after automatically cleaning procedure starts the second time and after in the storing process of number of times; If screw position rests on time of last time measuring that the time of certain original place, the position rotation in the screw stroke surpasses machine metering timer record and intermission setting and the last time of cleaning completion relatively during sum; Machine will be judged in the barrel that defective material cleans and accomplish and carry out for the last time the sky injection is cleaned action automatically and will be finished; If condition does not satisfy, change SA500 behind the stop position that then screw rod arrival storing is accomplished, cleaning procedure is proceeded automatically.
SA700: after end condition satisfied, screw rod carried out for the last time empty action of injection, and screw rod rests on the foremost position of barrel, and injecting motor shuts down, and cleaning is accomplished automatically, waits for that the user is for further processing.
With reference to Fig. 4, the concrete control procedure flow process following steps of this automatic cleaning control system:
SB100: before certain batch of task begins, in interactive interface, set this batch non-defective unit production task number,, then select automatic cleaning by the system prompt user if reach the production task number by producers.This batch of non-defective unit production task number is defaulted as 1000.
SB200: the user carries out moulding production according to operational procedure.
SB300: after every dust cycle was accomplished, qualified non-defective unit counter carried out stored count.
SB400: according to production process, be provided with three kinds and possibly clean the situation that gets into automatic cleaning procedure, be respectively SB401 situation 1, SB402 situation 2, SB403 situation 3.
SB401 situation 1: the production task of setting is counted to the back and is cleaned barrel automatically.
SB4011: after qualified non-defective unit counter carries out stored count, then compare, judge whether this batch non-defective unit number reaches with a quilt batch non-defective unit number of setting; If reach, then change SB4012; If do not reach, then change SB200, proceed moulding production;
SB4012: this batch of system prompt user production task is accomplished, and whether cleans barrel automatically;
SB4013: the user selects whether to clean automatically barrel based on the production actual conditions; If selecting is then to change step SB500; Then do not change SB4014 if select;
SB4014: machine waits for that the user further handles, and is in holding state.
SB402 situation 2: clean barrel before shutting down automatically.
SB4021: the user selects machine power-off button;
SB4022: the system prompt user please check before shutdown and clean barrel whether;
SB4023: the user selects whether to clean automatically barrel based on the production actual conditions; If selecting is then to change step SB500; Then do not change SB4024 if select;
SB4024: the machine shutdown has a power failure.
SB403 situation 3: clean barrel in the production process as required automatically.
SB4031: in the process of producing, the user also can select whether to clean automatically barrel based on the production actual conditions; If selecting is then to change step SB500; Then do not change SB4032 if select;
SB4032: machine waits for that the user further handles, and is in holding state.
SB500: whether the controller detection machine is in the manual mode duty; If change SB600; If not, then change SB501.
SB501: the user is according to the information at interface, and the user changes SB600 after being changed to the machine pattern manually again;
SB600: controller detects each section of barrel temperature and whether reaches design temperature; If arrive, change SB700; If not, then change SB601.
SB601: the user waits for after each section heating-up temperature arrives design temperature and changes SB700 again according to the information at interface;
SB700: controller detects the screw rod cold start-up the guard time whether time that continues temperature control after each section of barrel temperature arrives again arrives setting; If arrive, change SB800; If not, then change SB701.
SB701: the user waits for after the screw rod cold start-up guard time of setting arrives and changes SB800 again according to the information at interface;
SB800: the user selects automatic cleaning barrel pattern; If the pattern 1 that selection is cleaned with the range of screw rod, the SB9001 of commentaries on classics step SB900; As if the pattern of selecting to clean 2, then change the SB9002 of step SB900 with the wash number of setting;
SB900: according to the technical process needs of automatic cleaning, two kinds of patterns of cleaning are set, are respectively described pattern 1 of step SB901 and the said pattern 2 of step SB902.
SB901: pattern 1, screw rod will clean according to range automatically.
SB9011: the user selects the pattern 1 with the range cleaning of screw rod in interactive interface;
SB9012: the user is to the setting and the adjustment of pattern 1 technological parameter.Comprise: the intermission that cleaning speed, cleaning pressure, cleaning storing rotary speed, cleaning storing back pressure, cleaning are accomplished; Like the user adjustment is not set, machine will move according to the parameter of acquiescence; Cleaning speed is defaulted as 10%, cleaning pressure is defaulted as 20%, clean that the storing rotary speed is defaulted as 20%, to be defaulted as 10MPa, to clean the intermission of accomplishing first be 60s, be defaulted as 30s with intermission that last time, cleaning was relatively accomplished to clean the storing back pressure.After input is accomplished, change SB1000.
SB902: the user selects the pattern 2 of cleaning with the wash number of setting in interactive interface.
SB9021: the user is chosen in metering final position that screw rod arrive to set to start with in interactive interface, the pattern 2 of cleaning with the wash number of setting.
SB9022: the user is to the setting and the adjustment of pattern 2 technological parameters.Comprise: the intermission that cleaning speed, cleaning pressure, wash number, cleaning are accomplished, screw rod astern speed when cleaning storing rotary speed, cleaning; Like the user adjustment is not set, machine will move according to the parameter of acquiescence; Cleaning speed is defaulted as 10%, cleaning pressure is defaulted as 20%, wash number be defaulted as 5 times, to clean the intermission of accomplishing first be 60s, be defaulted as 30s with intermission that last time, cleaning was relatively accomplished, clean that the storing rotary speed is defaulted as 20%, the screw rod astern speed is defaulted as 2% when cleaning.After input is accomplished, change SB1000.
SB1000: whether controller detection injection portion integral body return back to is penetrated a back limit place; Penetrate seat back limit if return back to, change step SB1100; If there is not rollback to put in place, then change step SB1001.
SB1001: penetrate seat whole under the driving of penetrating a motor a whole rollback move to and penetrate seat back limit.
SB1100: the injection servomotor gets electric drive screw and advances according to preset cleaning speed and cleaning pressure, carries out to sky injection and makes that injecting motor shuts down behind the screw rod arrival barrel forefront.
SB1200: the rotation of plasticizing motor-driven screw rod, be positioned near the plastics of barrel feed opening this moment under the conveying effect of screw channel, carry to the front portion by the barrel afterbody; In the time of course of conveying, under the shearing acting in conjunction of the heating of barrel external heater and screw channel, accomplish, become the front end that plastic melt is positioned at barrel and gather by the conversion of glassy state to molten state.Because gathering of barrel head molten plastic makes that the barrel head pressure is increasing; When the detected back pressure value of the pressure sensor real-time continuous of being located at ball-screw and screw rod place reaches the preset back pressure value 10MPa of automatic cleaning barrel above 0.5s; Then inject servomotor and make according to preset astern speed and retreat pumpback while rotating, carry out storing and move at the screw rod of rotation.
SB1300: carry out in the process of storing in injecting motor and the action of plasticizing motor associating drive screw; If screw rod is while selecting to retreat in the process of pumpback; The timing of storing timer; If the time that controller detection screw position no longer changes arrives the time of setting, the defective material in system's judgement barrel cleans and finishes, commentaries on classics step SB1400; Otherwise change step SB1100.
SB1400: plasticizing motor and injecting motor shut down, and the compound motion that screw rod stops to retreat while rotating rests on certain position of barrel.
SB1500: controller judges through the current screw position that position sensor detects whether screw rod arrives the foremost position of barrel; If step SB1600 is changeed in no show; Otherwise change step SB1700.
SB1600: the injecting motor drive screw advances, and carries out for the last time sky being injected, and makes screw rod rest on barrel foremost.
SB1700: clean automatically and finish, the system prompt user carries out next step operation.
Foregoing is merely a specific embodiment of the present invention, but design concept of the present invention is not limited thereto, and allly utilizes this design that the present invention is carried out the change of unsubstantiality, all should belong to the behavior of invading protection domain of the present invention.
Claims (3)
1. injection machine intelligence cleaning control method automatically may further comprise the steps:
Heating injecting machine material tube to temperature reaches predetermined temperature, and the seat of penetrating of injection machine is retreated into the back extreme position, and the control injection machine gets into manual work pattern, and barrel temperature starts screw rod cold start-up guard time up to arriving the scheduled time after reaching predetermined temperature;
Thereby ordering about injection servomotor forward running drive screw rod carries out sky is injected; When screw rod arrives barrel foremost the time to sky injection, the injection servomotor stops the forward running, accomplishes and once sky is injected;
After injection is accomplished to sky, order about the storing servomotor and carry out storing; When the melt pressure in the barrel reaches preset cleaning back pressure value, order about injection servomotor antiport and make screw compulsory return back to the injection original position in the storing process, the injection servomotor stops antiport, accomplishes and once cleans storing;
Sky injection and cleaning storing are hocketed till reaching cleaning completion condition;
After reaching cleaning completion condition, carry out once sky being injected so that remaining defective material in the barrel is cleaned discharge barrel, screw rod rests on barrel foremost again, and cleaning procedure is finished automatically.
2. injection machine according to claim 1 intelligence is cleaning control method automatically, it is characterized in that, said cleaning completion condition is that the material in the barrel has been cleaned to finish or clean the storing number of times and reaches predetermined wash number.
3. realize claim 1 or the 2 said injection machine intelligence automatic cleaning control system of cleaning control method automatically; It is characterized in that, comprise master controller (23), PLC controller (26), injection servo controller (15), storing servo controller (18), input/output module (32), temperature control modules (31), frequency converter (24), A/D modular converter (14), electromagnetic proximity switch (29) and irony slide block (30), position sensor (6), pressure sensor (7), thermocouple (2), material tube heater (1);
Irony slide block (30) is located on the slide bar of injection machine board base, penetrates a back extreme position in order to the expression injection machine;
Electromagnetic proximity switch (29); Be located on the slide rail of injection machine; When injection machine penetrate an integral body backward rollback arrive irony slide block (30) under the time, the normally opened contact that triggers electromagnetic proximity switch (29) is closed, sends this closure signal to input/output module (32);
Temperature control modules (31) is used for sending the injecting machine material tube temperature that thermocouple (2) is gathered to input/output module (32), receives the heating instruction of input/output module (32), under said heating commands for controlling, barrel (4) is heated;
Input/output module (32) is used for sending master controller (23) to after barrel temperature with the closed information of electromagnetic proximity switch (29) and temperature control modules (31) feedback converts data signal into; Heating instruction that master controller (23) is sent and Frequency Converter Control instruction transformation are to send temperature control modules (31) and frequency converter (24) respectively to after the analog signal;
Frequency converter (24) is used to receive the Frequency Converter Control instruction of input/output module (32), the duty of penetrating a variable-frequency motor (25) according to the Frequency Converter Control commands for controlling;
PLC controller (26) is used to receive the outside machine works mode instruction of importing, and sends injection machine operational mode state signal to master controller (23), gets into manual work pattern with the control injection machine;
Master controller (23) is connected communication with injection servo controller (15), storing servo controller (18) with input/output module (32) through bus; Be used to receive the barrel temperature information of input/output module (32); If barrel temperature do not reach the barrel predetermined temperature then output resume heating the heating instruction and send input/output module (32) to, if barrel temperature then begins screw rod cold start-up protection timing after reaching the barrel predetermined temperature; The closure signal of monitoring input/output module (32) is penetrated the out-of-work Frequency Converter Control instruction of a variable-frequency motor and is sent input/output module (32) in case receive closure signal then produce; Be used to receive the injection machine operational mode state signal of PLC controller (26), judge according to injection machine operational mode state signal whether injection machine gets into manual work pattern; Reach that predetermined temperature, electromagnetic proximity switch are closed, injection machine gets into manual work pattern and screw rod cold start-up guard time arrives after the scheduled time, these four conditions all possessed at barrel temperature, send the forward CRANK PULSES to injection servo controller (15); Receive the screw position information of injection servo controller (15) feedback, when screw rod (3) arrives barrel foremost, master controller (23) sends forward running stop signal to injection servo controller (15), accomplishes and once sky is injected; After once injection was accomplished to sky, master controller (23) sent the running instruction to storing servo controller (18); Receive the melt pressure information of injection servo controller (15) feedback; When melt pressure reaches preset cleaning back pressure value; Then send the antiport signal to injection servo controller (15); Inject original position when screw rod (3) arrives, master controller (23) sends the antiport stop signal to injection servo controller (15), accomplishes and once cleans storing; Sky injection and cleaning storing are hocketed till reaching cleaning completion condition; After reaching cleaning completion condition, carry out once sky being injected so that remaining defective material in the barrel is cleaned discharge barrel, screw rod (3) rests on barrel (4) foremost again, and cleaning procedure is finished automatically;
Injection servo controller (15); Be used to receive forward CRANK PULSES or forward running stop signal or the antiport signal or the antiport stop signal of main controller (23), the injection servomotor (8) of control injection machine carries out the sky injection or stops sky injection or drive screw return or stop the screw rod return under said forward CRANK PULSES or forward running stop signal or antiport signal or the effect of antiport stop signal; The melt pressure information of the screw position information of receiving position sensor (6) and pressure sensor (7) sends screw position information and melt pressure information to said master controller (23);
Position sensor (6) is used to gather the screw position information of injection machine, and sends said injection servo controller (15) to;
Pressure sensor (7) is used to gather the anterior melt pressure information of barrel, and sends said injection servo controller (15) to;
Thermocouple (2) is used to gather the temperature information of barrel heating, and sends the said temperature control modules (31) that sends to;
Storing servo controller (18) is used to receive the running instruction of said main controller (23), and the storing servomotor (16) of control injection machine carries out storing under said running instruction effect.
Material tube heater (1) receives the heating instruction of temperature control modules (31), is used for barrel (4) is heated.
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| CN109049543A (en) * | 2018-08-27 | 2018-12-21 | 格力电器（杭州）有限公司 | Needle control system, method and the storage medium of injection machine mould |
| CN112536996A (en) * | 2019-09-20 | 2021-03-23 | 发那科株式会社 | Control device and control method for injection molding machine |
| CN113843967A (en) * | 2021-08-10 | 2021-12-28 | 金发科技股份有限公司 | Automatic cleaning method and feeding cleaning system for injection molding machine |
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| DE102017101132A1 (en) * | 2017-01-20 | 2018-07-26 | Kraussmaffei Technologies Gmbh | Method and device for operating an injection molding machine |
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| CN109049543A (en) * | 2018-08-27 | 2018-12-21 | 格力电器（杭州）有限公司 | Needle control system, method and the storage medium of injection machine mould |
| CN112536996A (en) * | 2019-09-20 | 2021-03-23 | 发那科株式会社 | Control device and control method for injection molding machine |
| CN113843967A (en) * | 2021-08-10 | 2021-12-28 | 金发科技股份有限公司 | Automatic cleaning method and feeding cleaning system for injection molding machine |
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