CN102672928B - 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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- CN102672928B CN102672928B CN201210138340.1A CN201210138340A CN102672928B CN 102672928 B CN102672928 B CN 102672928B CN 201210138340 A CN201210138340 A CN 201210138340A CN 102672928 B CN102672928 B CN 102672928B
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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 injection machine field, be specifically related to a kind of for injection machine automatic cleaning control method and the system to barrel internal screw.
Background technology
Screw rod is the vitals of plastic injection molding machine, and in injection molding process, screw rod mainly completes two actions: plasticizing metering and injection pressurize.At 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 fluid pressure type injection machine), the plastics materials that is entered barrel by barrel feed opening can, under the conveying effect of screw channel, be carried the front area that accumulates in barrel to front portion by barrel afterbody.In the process of carrying in screw rod rotation, material in the stirring of screw channel sword, shear and be arranged under the heat effect of barrel appearance border heater, transform to molten state from glassy state.Because gathering of barrel head molten plastic makes barrel head pressure increasing, in the time reaching the back pressure value of setting, the injecting motor (for electric injection molding machine) being connected by mechanical driving device and screw rod will counter-rotate or the rod end chamber oil-feed of hydraulic injection cylinder (for fluid pressure type injection machine) makes piston rod rollback, the screw rod of by intermediate mechanical transmission device driven rotary rotates while straight line rollback backward, so that the front end that the melt having plastified is stored in to barrel is for injection.The stroke that screw rod retreats is set by the needed injection material amount of one-shot forming plastic member product.At 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 fluid pressure type injection machine) is advanced piston rod, drive screw rod to advance by intermediate mechanical transmission device, the molten plastic that accumulates in barrel front end, with the pressure of setting and the die cavity of speed injection progressive die tool, can be obtained to required goods after cooling curing.
In recent years, the appearance requirement of plastic and dimensional accuracy are more and more higher.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, compared with fluid pressure type injection machine, the goods of producing have higher dimensional accuracy and repeatable accuracy.Obtain the precise plastic part 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, one is reliable control system, the precision of the two mechanical components and parts for composition injection machine body.
As the of paramount importance parts of injection moulding machine, screw rod can complete injection and plasticizing meter action with technological parameters such as given speed, pressure, position and times accurately, has decisive role for dimensional accuracy, presentation quality, the quality precision of plastic.In plastic production process, usually run into following three kinds of situations: the production task of (1) this batch of plastic product completes, need more conversion materials; (2) machinery requirement closes electricity shutdown, and start is produced to wait for next time; (3) user, according to technique needs, selects to clean barrel.In order to guarantee the kinematic accuracy of screw rod, after the material degraded that prevents from accumulating in barrel, be coated on screw surface, affect quality and the precision of goods, just must, before new material is changed or before shutting down, the material accumulating in barrel be cleaned.
At present, injection molding process personnel carry out with manual work pattern the cleaning of barrel, but the cleaning under manual work pattern completes according to operator's micro-judgment completely, waste time and energy, can not fully and completely buildup remaining in barrel be cleared out, even due to operator's carelessness meeting maloperation machine or forget the work that barrel cleans, be easy to cause the damage to screw rod, there is larger potential safety hazard, have 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 of goods precision and presentation quality, machine overall performance declines, production efficiency low, this impact is produced more so for precision injection molding.
Summary of the invention
The invention provides a kind of automatic cleaning control method of intelligence and system that is applicable to full electric injection molding machine injection mo(u)lding, its object is to overcome that the screw rod that relies on operator's experience to complete the technical process of Manual-cleaning and to cause is easily damaged, product quality and precision reduces, production efficiency is low shortcoming.
Injection machine intelligence cleaning control method automatically, comprises the following steps:
Heating injecting machine material tube to temperature reaches predetermined temperature, and the seat of penetrating of injection machine is retreated into rear extreme position, controls injection machine and enters manual work pattern, and barrel temperature starts screw rod cold start-up guard time until arrive the scheduled time after reaching predetermined temperature;
Thereby ordering about the running of injection servomotor forward drives screw rod to carry out sky to inject; When screw rod arrives barrel foremost time to sky injection, injection servomotor stops forward running, completes once sky is injected;
After sky has been injected, order about storing servomotor and carry out storing; In storing process, in the time that the melt pressure in barrel reaches default cleaning back pressure value, order about injection servomotor antiport and make screw compulsory return back to injection original position, injection servomotor stops antiport, completes and once cleans storing;
Sky injection and cleaning storing are hocketed until reach the condition of cleaning;
Reach after the condition of cleaning, then carry out once sky being injected to remaining defective material in barrel is cleaned to discharge barrel, screw rod rests on barrel foremost, and cleaning procedure is finished automatically.
It is that material in barrel has been cleaned complete or has cleaned storing number of times and reach predetermined wash number that described cleaning completes condition.
Realize the described 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, sends master controller 23 after being converted to data signal for the barrel temperature that the closed information of electromagnetic proximity switch 29 and temperature control modules 31 are fed back; The heating instruction that master controller 23 is sent and Frequency Converter Control instruction transformation are after analog signal, to send respectively temperature control modules 31 and frequency converter 24 to;
Position sensor 6, for gathering the screw position information of injection machine, and sends described injection servo controller 15 to;
Pressure sensor 7, for gathering the melt pressure information of barrel front portion, and sends described injection servo controller 15 to;
Thermocouple 2, for gathering the temperature information of barrel heating, and sends temperature control modules 31 to described in sending to;
Storing servo controller 18, for receiving the running instruction of described main controller 23, the storing servomotor 16 of controlling injection machine under described running instruction effect carries out storing.
Material tube heater 1, receives the heating instruction of temperature control modules 31, for barrel 4 is heated.
Compared with prior art, tool of the present invention has the following advantages:
1, the present invention has overcome the work of cleaning barrel according to experience single-step operation machine by technologist; rely on servo controller and control program two single step actions of sky injection and plasticizing are serially connected closely according to technique logical sequence by former cause technologist's cycling; realize the function of automatic cleaning barrel; protect the vitals of injection moulding machine---screw rod, improved to a certain extent goods precision and presentation quality.
2, the present invention is directed to three kinds of situations that need to clean barrel in production process, rely on the intelligentized judgement of control program, prompting user enters automatic cleaning barrel program, whether intelligentized judgement defective material has all carried and has remained for the last time the cleaning of defective material from afterbody to front portion, stability and the reliability of barrel work are guaranteed to clean, having overcome by operator relies on experience to judge in barrel, whether defective material cleans up, maloperation in cleaning barrel process or operator forget the possibility of barrel cleaning, overcome the potential safety hazard of bringing therefrom.Meanwhile, user also can, according to technique needs, under the manual work pattern of machine, select automatically to clean the work that barrel program is cleaned defective material in barrel automatically, has increased flexibility and the applicability of operation.
3, automatic cleaning system and control method that the present invention adopts, on the basis of the injection moulding machine control program of main flow, to rely on design, the automatic cleaning function modular subroutine of exploitation is controlled injecting motor and is moved to realize according to predetermined technique logical sequence with plasticizing motor, with existing full electric injection molding machine basic machine structure, controller is identical, do not install additional, design, increase other mechanical components and parts and controller hardware, just develop corresponding functional software module, increase a control subprogram with automatic cleaning function, the subprogram activation of exploitation is reliable, friendly interface, easy to use, injection machine is used to producer, do not need to append additional investment.
4, the present invention has increased an automatic cleaning process process that is totally independent of injection moulding production process in technique, can not increase the each cycle net cycle time of goods, owing to having shortened the time of manual cleaning barrel, do not increasing under the periodic duty prerequisite of cycle time, greatly save the production time, improved production efficiency, operating personnel free from heavy manual cleaning.
Although 5, the present invention is for full electric injection molding machine, the principle, the method that realize from the present invention, be applicable to the electric mixed injection machine of fluid pressure type or liquid too, can't produce because the type of injection machine is different unconformable problem.
Accompanying drawing explanation
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 integral control algorithm schematic flow sheet of the present invention.
Fig. 4 is the control procedure algorithm flow schematic diagram of automatic cleaning of the present invention.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, further the present invention is described in detail.
Referring to Fig. 1, injection machine intelligence automatically cleaning control system 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, sends described master controller 23 after being converted to data signal for the barrel temperature that the closed information of described electromagnetic proximity switch 29 and described temperature control modules 31 are fed back; The heating instruction that described master controller 23 is sent and Frequency Converter Control control instruction send respectively described temperature control modules 31 and described frequency converter 24 to after being converted to analog signal;
Position sensor 6, for gathering the screw position information of injection machine, and sends described injection servo controller 15 to;
Pressure sensor 7, for gathering the melt pressure information of barrel front portion, and sends described injection servo controller 15 to;
Storing servo controller 18, for receiving the running instruction of described main controller 23, the storing servomotor 16 of controlling injection machine under described running instruction effect carries out storing;
Thermocouple 2, for gathering the temperature information of barrel heating, and sends temperature control modules 31 to described in sending to;
Material tube heater 1, receives the heating instruction of temperature control modules 31, for barrel 4 is heated.
Cleaning parameter mainly comprises cleaning pattern, cleaning speed, cleaning pressure, wash number, cleaning storing speed, cleans back pressure, cleans astern speed.
The full electric injection molding machine intelligence injecting assembly that cleaning control system carries with injection machine automatically of the present invention and storing assembly are combined and are formed injection machine intelligence automatic cleaning system, realize the automatic washing to injection machine.The injecting assembly that injection machine carries and storing assembly mainly comprise hopper 5, barrel 4, screw rod 3, ball-screw 9, injection servomotor 8, plastify servomotor 16 and penetrate a variable-frequency motor 25, described hopper 5 is located at the feed opening top of barrel 4, the outside border of barrel is provided with provides the heating collar 1 of plasticizing heat and the thermocouple 2 that 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 is connected by bearing with screw rod 3, be located at the junction of ball-screw 9 and screw rod 3 for detecting in real time the pressure sensor 7 of plastic cement melt pressure, injection servomotor 8 is by driving gear 11, profile of tooth synchronous belt 10, driven gear 13, injection nut 12 is connected with ball-screw, in order to accurately, the position sensor 6 of the current screw position of Real-time Feedback is located at injection ball-screw and screw rod junction, and storing servomotor 16 is by driving gear 17, profile of tooth synchronous belt 20, driven gear 21, plasticizing nut 22 is connected with screw rod 3, penetrates a variable-frequency motor 25 and is connected with board slide rail 28 by leading screw 27, and slide rail can drive the barrel being installed on slide rail on board base, injection components and parts, storing components and parts entirety is free to slide forward or backward.
With reference to Fig. 2, the control principle of this automatic cleaning system is: first, within the sampling period, master controller 23, to being sampled in the cleaning parameter of 19 li of inputs of user interface by user, receives cleaning parameter.If user does not carry out redjustment and modification to cleaning parameter, when system is cleaned, will carry out according to the technological parameter of acquiescence.Master controller 23 is monitored production process, once cleaning task has demand automatically, the automatic cleaning procedure module of master controller 23 will be activated.Then, master controller 23 judges the condition that enters automatic cleaning: (1) master controller 23 is by carrying out communication with Programmable Logic Controller (PLC) 26, whether detect machine at manual work pattern, if not at manual work pattern, point out user to carry out mode of operation and switch adjustment, wherein the transmission route of machine manual work pattern status signal is that user is transmitted and received by master controller 23 by PLC from action button input, (2) by carrying out communication with NCUC bus and input/output module 32, after seat is penetrated in detection, whether spacing approach switch 29 is closed, if approach switch does not have closure, master controller 23 is given an order to input/output module 32, via the analog output mouth of input/output module 32, be transferred to frequency converter 24, frequency converter 24 is exported to variable frequency synthesiser amount signal to penetrate a motor 25, penetrating a motor 25 obtains electric, drive injection device entirety to retreat into and penetrate a rear extreme position, now, penetrate magnet proximity switch 29 closures of rationing the power supply after seat, through signal feedback, master controller 23 receives closure signal process judgement, penetrating a variable-frequency motor 25 power-off by frequency converter 24 controls shuts down, wherein penetrate a transmission route of rear spacing electromagnetic proximity switch 29 status signals for also finally being received by master controller 23 via input/output module 32, (3) by carrying out communication with NCUC bus and input/output module 32, whether the barrel heating-up temperature relatively being detected by thermocouple 2 arrives design temperature, if temperature does not reach, temperature control modules 31 continues heater 1 energising heating under the control of master controller 23, enter again next step until arrive design temperature, wherein the feedback temperature signal transmission route of thermocouple 2 is thermocouple 2 amplifies by the power amplification function of temperature control modules 31 the current analog amount signal of the representative heating-up temperature detecting by signal after, be transferred to input/output module 32, A/D translation function via input/output module 32 is converted to digital quantity, be transferred to master controller 23 by input/output module 32 again, (4), after barrel 4 heating-up temperatures arrive, master controller 23 monitors whether timing completes at the inner screw rod cold start-up protection timer setting-up time arranging of program.Only have above four conditions to meet simultaneously, just enter next step.
Then, user, according to the information of user interface, adjusts and arranges cleaning action pattern and technological parameter.Automatically cleaning procedure is carried out, master controller 23 sends instruction by NCUC bus to injection servo controller 15, make to inject servomotor 8 drive screws 3 according to predetermined cleaning speed, cleaning pressure carries out empty action of injection, in this injection process, by position sensor 6, the pressure signal of position signalling current screw rod 3 and pressure sensor 7 is fed back to injection servo controller 15 via A/D modular converter 14, simultaneously, the speed feedback signal sensing is given injection servo controller 15 by absolute type encoder by injection servomotor 8, further feed back to again master controller 23 by injection servo controller 15, master controller 23 is realized screw position according to the data-signal receiving, cleaning pressure, the adjustment control of cleaning speed controlled quentity controlled variable, thereby make the screw rod 3 can be with the cleaning pressure of being scheduled to, cleaning speed carries out action of injection in predetermined stroke, when screw rod 3, to sky, injection arrives barrel 4 foremost, send forward running stop signal by master controller 23 to injection servo controller 15, make injecting motor 8 stop forward running, screw rod 3 halts.Then, master controller 23 sends running instruction by NCUC bus to storing servo controller 18 again, make storing servomotor 18 drive screws 3 according to predetermined rotary speed rotation, plastics are carried to front portion from barrel 4 afterbodys under the conveying of screw channel, carry out storing action, in this process, the anterior melt pressure signal of barrel 3 that pressure sensor 7 detects feeds back to injection servo controller 15 via A/D modular converter 14, further feed back to again master controller 23 by injection servo controller 15, master controller 23 compares receiving measured value and default back pressure value, when reaching default 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 until injection original position, master controller 23 sends antiport stop signal to injection servo controller 15, complete cleaning storing.In back off procedure, injecting motor 8 drive screw 3 straight line rollbacks make the anterior melt pressure all-the-time stable of barrel 4 in default cleaning back pressure value.Like this, just, under the Collaborative Control of master controller 23, injection servo controller 15, storing servo controller 18, injecting motor 8 is counter-rotated and the 16 rotary joints drivings of storing motor, drive screw rod 3 rotates while rollback completes the action of cleaning storing.It should be noted that, above-mentioned automatic cleaning process is alternately carried out sky injection and storing action, until judging the condition that in barrel 4, defective material has cleaned, primary control program meets, now send instruction by master controller 23, storing motor 16 is shut down, injecting motor 8 is rotated in the forward, drive screw 3 carries out for the last time sky being injected, remaining defective material in barrel 4 is cleaned to 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 State Administration for Quality Supervision and Inspection and Quarantine combines the machine tool numerical control system inside of issue data communication protocol national standard with national standardization administration committee.In Fig. 2, arrow represents data flow.
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, arrange three kinds and may clean the situation that enters automatic cleaning procedure, be respectively SA101 situation 1, SA102 situation 2, SA103 situation 3.
SA101 situation 1: in the time that production task starts, set the number of tasks of this batch of production by user in user interface; As user ignores these data of input, giving tacit consent to this batch of qualified non-defective unit number of production is 1000; After input, machine is counted production according to predetermined number of tasks, reaches once the non-defective unit of setting is counted to, and whether enters automatic cleaning procedure by interface prompt user;
SA102 situation 2: after machine operation power supply stop botton is pressed, machine prompting user whether before shutdown, cleaning barrel automatically before shutting down;
SA103 situation 3: in process of production, user also can be according to the needs that use, and select to enter automatic cleaning procedure defective material in barrel is cleaned.
SA200: the condition judgment that enters automatic cleaning procedure: whether (1) machine is in manual work pattern; (2) whether barrel heating-up temperature arrives design temperature; (3) whether screw rod cold start-up guard time arrives setting-up time; (4) penetrate seat whether retreat move to penetrate seat after limit; In the situation that above-described four conditions all meet, turn next step; Do not meet if any any one condition, machine, in holding state, just turns next step until condition meets.
SA300: user selects automatic cleaning action pattern, be divided into two kinds of patterns: (1) screw rod total travel is cleaned, under this kind of pattern, screw rod moves back and forth the cleaning storing back pressure of the cleaning storing rotary speed of the cleaning pressure of the cleaning speed according to setting, setting, setting, setting barrel is cleaned automatically with the range of screw rod, until material is cleaned complete in barrel; (2) clean with set point number, under this kind of pattern, screw rod will clean barrel with the technique stroke reciprocating of screw rod automatically according to being no more than the wash number of setting, the cleaning pressure of setting, the cleaning speed of setting, the cleaning astern speed of setting, the cleaning storing rotary speed of setting; The cleaning model of machine acquiescence is that screw rod total travel is cleaned.
SA400: setting and the adjustment of user to automatic cleaning process parameter, comprising: cleaning speed, cleaning pressure, wash number, cleaning storing rotary speed, clean storing back pressure, the intermission of having cleaned, for effectively screw rod astern speed when cleaning of automatic cleaning action pattern 2; As user does not arrange adjustment, 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, first intermission of having cleaned be 60s, intermission of completing with the cleaning of comparison last time while being defaulted as 30s, cleaning screw rod astern speed be defaulted as 2%.
SA500: user inputs and automatically cleans fill order in user interface, automatically cleaning barrel program carries out, screw rod carries out empty action of injection under the driving of injecting motor, then, under the rotary joint of the reverse rotation of injecting motor and plasticizing motor drives, rotate while rollback carries out storing action, and injection and storing move and hocket.
SA600: in each storing stroke, the end condition that controller can clean barrel judges, be divided into two kinds of situations: (1) is in the time of the first storing of screw rod after automatic cleaning procedure starts, if screw position rest on the time of certain original place, the position rotation in screw stroke exceed setting cleaning completes the intermission first time, machine will judge that in barrel, defective material has cleaned and carried out for the last time sky being injected, and cleaning action will finish automatically; (2) when in the storing process of for the second time and later number of times of screw rod after automatic cleaning procedure starts, if screw position rests on that the time of certain original place, the position rotation in screw stroke exceedes that the machine metering time of last time measuring of timer record and the cleaning with comparison last time of setting complete intermission is when sum, machine will judge that in barrel, defective material has cleaned and carried out for the last time sky being injected, and cleaning action will finish automatically; If condition does not meet, after the stop position that screw rod arrival storing completes, turn SA500, cleaning procedure is proceeded automatically.
SA700: after end condition meets, screw rod carries 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 completes automatically, waits for that 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 starts, set this batch of non-defective unit production task number by producers in interactive interface, if reach production task number, select automatic cleaning by system prompt user.This batch of non-defective unit production task number is defaulted as 1000.
SB200: user carries out moulding production according to operational procedure.
SB300: after every dust cycle completes, qualified non-defective unit counter carries out stored count.
SB400: according to production process, arrange three kinds and may clean the situation that enters 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 rear automatic cleaning barrel.
SB4011: qualified non-defective unit counter carries out after stored count, then, with being compared by a batch non-defective unit number of setting, judges whether this batch of non-defective unit number reaches; If reached, turn SB4012; If do not reached, turn SB200, proceed moulding and produce;
Whether SB4012: this batch of production task of system prompt user completes, clean barrel automatically;
SB4013: user, according to production actual conditions, selects whether automatically to clean barrel; If selecting is to go to step SB500; If you select No, turn SB4014;
SB4014: machine waits for that user further processes, in holding state.
SB402 situation 2: automatically clean barrel before shutting down.
SB4021: user selects machine power-off button;
SB4022: system prompt user please check and whether clean barrel before shutdown;
SB4023: user, according to production actual conditions, selects whether automatically to clean barrel; If selecting is to go to step SB500; If you select No, turn SB4024;
SB4024: machine shutdown has a power failure.
SB403 situation 3: automatically clean as required barrel in production process.
SB4031: in the process of producing, user also can, according to production actual conditions, select whether automatically to clean barrel; If selecting is to go to step SB500; If you select No, turn SB4032;
SB4032: machine waits for that user further processes, in holding state.
SB500: whether controller detects machine in manual mode duty; If so, turn SB600; If not, turn SB501.
SB501: user is according to the information at interface, and user turns SB600 after machine pattern is set to manually again;
SB600: controller detects each section of temperature of barrel and whether reaches design temperature; If arrive, turn SB700; If not, turn SB601.
SB601: user, according to the information at interface, waits for after each section of heating-up temperature arrives design temperature and turns SB700 again;
SB700: whether the time that continues again temperature control after each section of temperature of controller detection barrel arrives arrives the screw rod cold start-up guard time of setting; If arrive, turn SB800; If not, turn SB701.
SB701: user, according to the information at interface, waits for after the screw rod cold start-up guard time of setting arrives and turns SB800 again;
SB800: user selects automatic cleaning barrel pattern; If select the pattern 1 of cleaning with the range of screw rod, go to step the SB9001 of SB900; If select the pattern 2 of cleaning with the wash number of setting, go to step the SB9002 of SB900;
SB900: according to the technical process needs of automatic cleaning, two kinds of patterns of cleaning are set, are respectively pattern 2 described in pattern 1 described in step SB901 and step SB902.
SB901: pattern 1, screw rod will clean automatically according to range.
SB9011: user selects the pattern 1 of cleaning with the range of screw rod in interactive interface;
SB9012: setting and the adjustment of user to pattern 1 technological parameter.Comprise: cleaning speed, cleaning pressure, cleaning storing rotary speed, the intermission of cleaning storing back pressure, having cleaned; As user does not arrange adjustment, 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 be defaulted as 20%, clean storing back pressure be defaulted as 10MPa, first intermission of having cleaned be 60s, and intermission of completing of the cleaning of comparison last time be defaulted as 30s.After having inputted, turn SB1000.
SB902: the pattern 2 that user selects the wash number to set to clean in interactive interface.
SB9021: user is chosen in screw rod and arrives the metering final position of setting as beginning in interactive interface, the pattern 2 of cleaning with the wash number of setting.
SB9022: setting and the adjustment of user to pattern 2 technological parameters.Comprise: intermission that cleaning speed, cleaning pressure, wash number, cleaning complete, clean storing rotary speed, screw rod astern speed while cleaning; As user does not arrange adjustment, 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, intermission of having cleaned is 60s first, intermission of completing with the cleaning of comparison last time is defaulted as 30s, clean that storing rotary speed is defaulted as 20%, screw rod astern speed is defaulted as 2% while cleaning.After having inputted, turn SB1000.
SB1000: whether controller detection injection portion entirety return back to is penetrated a rear limit place; Penetrate seat if return back to after, limit, go to step SB1100; If do not have rollback to put in place, go to step SB1001.
SB1001: penetrate a seat entirety overall rollback under the driving of penetrating a motor and move to and penetrate limit after seat.
SB1100: injection servomotor obtains electric drive screw rod and advances according to default cleaning speed and cleaning pressure, carries out injecting motor after injection makes screw rod arrival barrel forefront to sky and shuts down.
SB1200: the rotation of plasticizing motor drive screw, be now positioned near the plastics of barrel feed opening under the conveying effect of screw channel, carried to front portion by barrel afterbody; When course of conveying, under the heating of barrel external heater and the shearing acting in conjunction of screw channel, complete the conversion to molten state by glassy state, become the front end that plastic melt is positioned at barrel and gather.Because gathering of barrel head molten plastic makes barrel head pressure increasing, in the time being located at back pressure value that the pressure sensor real-time continuous at ball-screw and screw rod place detects and reaching the default back pressure value 10MPa of automatic cleaning barrel and exceed 0.5s, inject servomotor and make to rotate while retreat pumpback at the screw rod of rotation according to default astern speed, carry out storing action.
SB1300: combine drive screw action at injecting motor with plasticizing motor and carry out in the process of storing, if screw rod is selecting while 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, it is complete that system judges that the defective material in barrel cleans, and goes to step SB1400; Otherwise go to step SB1100.
SB1400: plasticizing motor and injecting motor shut down, and screw rod stops the compound motion that rotation limit, limit retreats, and rests on certain position of barrel.
SB1500: the current screw position that controller detects by position sensor judges whether screw rod arrives the foremost position of barrel; If do not arrive, go to step SB1600; Otherwise go to step SB1700.
SB1600: injecting motor drive screw advances, carries out for the last time sky being injected, and makes screw rod rest on barrel foremost.
SB1700: automatically clean and finish, system prompt user carries out next step operation.
Foregoing is only a specific embodiment of the present invention, but design concept of the present invention is not limited to this, allly utilizes this design to carry out the change of unsubstantiality to the present invention, all should belong to the behavior of invading protection domain of the present invention.
Claims (3)
1. injection machine cleaning control method, comprises the following steps:
Heating injecting machine material tube to temperature reaches predetermined temperature, and the seat of penetrating of injection machine is retreated into rear extreme position, controls injection machine and enters manual work pattern, and barrel temperature starts screw rod cold start-up guard time until arrive the scheduled time after reaching predetermined temperature;
Thereby ordering about the running of injection servomotor forward drives screw rod to carry out sky to inject; When screw rod arrives barrel foremost time to sky injection, injection servomotor stops forward running, completes once sky is injected;
After sky has been injected, order about storing servomotor and carry out storing; In storing process, in the time that the melt pressure in barrel reaches default cleaning back pressure value, order about injection servomotor antiport and make screw compulsory return back to injection original position, injection servomotor stops antiport, completes and once cleans storing;
Sky injection and cleaning storing are hocketed until reach the condition of cleaning;
Reach after the condition of cleaning, then carry out once sky being injected to remaining defective material in barrel is cleaned to discharge barrel, screw rod rests on barrel foremost, and cleaning procedure is finished automatically.
2. injection machine cleaning control method according to claim 1, is characterized in that, it is that material in barrel has been cleaned complete or has cleaned storing number of times and reach predetermined wash number that described cleaning completes condition.
3. realize the automatic cleaning control system of injection machine cleaning control method described in claim 1 or 2, 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, in order to represent that injection machine penetrates a rear extreme position;
Electromagnetic proximity switch (29), be located on the slide rail of injection machine, when injection machine penetrate an entirety backward rollback arrive irony slide block (30) under time, trigger electromagnetic proximity switch (29) normally opened contact closure, send this closure signal to input/output module (32);
Temperature control modules (31), sends input/output module (32) to for the injecting machine material tube temperature that thermocouple (2) is gathered, and receives the heating instruction of input/output module (32), under described heating instruction control, barrel (4) is heated;
Input/output module (32) sends master controller (23) to after the barrel temperature of the closed information of electromagnetic proximity switch (29) and temperature control modules (31) feedback is converted to data signal; The heating instruction that master controller (23) is sent and Frequency Converter Control instruction transformation are after analog signal, to send respectively temperature control modules (31) and frequency converter (24) to;
Frequency converter (24), for receiving the Frequency Converter Control instruction of input/output module (32), the duty of penetrating a variable-frequency motor (25) according to Frequency Converter Control instruction control;
PLC controller (26), for receiving the machine mode of operation instruction of outside input, and sends injection machine operational mode state signal to master controller (23), enters manual work pattern to control injection machine;
Master controller (23), by bus and injection servo controller (15), storing servo controller (18) and input/output module (32) connecting communication; Be used for receiving the barrel temperature information of input/output module (32), if barrel temperature does not reach the heating instruction that output resume heats of barrel predetermined temperature and sends input/output module (32) to, if barrel temperature starts screw rod cold start-up protection timing after reaching barrel predetermined temperature; The closure signal of monitoring input/output module (32), once receive closure signal, produces and penetrates the out-of-work Frequency Converter Control instruction of a variable-frequency motor and send input/output module (32) to; Be used for receiving the injection machine operational mode state signal of PLC controller (26), judge according to injection machine operational mode state signal whether injection machine enters manual work pattern; After barrel temperature reaches predetermined temperature, electromagnetic proximity switch closure, injection machine and enters manual work pattern and screw rod cold start-up guard time and arrive these four conditions of the scheduled time and all possess, send 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), completes once sky is injected; After once sky having been injected, master controller (23) sends running instruction to storing servo controller (18); Receive the melt pressure information of injection servo controller (15) feedback, when melt pressure reaches default cleaning back pressure value, send antiport signal to injection servo controller (15), when screw rod (3) arrives injection original position, master controller (23) sends antiport stop signal to injection servo controller (15), completes and once cleans storing; Sky injection and cleaning storing are hocketed until reach the condition of cleaning; Reach after the condition of cleaning, then carry out once sky being injected to remaining defective material in barrel is cleaned to discharge barrel, screw rod (3) rests on barrel (4) foremost, and cleaning procedure is finished automatically;
Injection servo controller (15), be used for receiving forward CRANK PULSES or forward running stop signal or antiport signal or the antiport stop signal of main controller (23), the injection servomotor (8) of controlling injection machine under described forward CRANK PULSES or forward running stop signal or antiport signal or the effect of antiport stop signal carries out sky injection or stops sky injection or drive screw return or stop screw rod return; 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 described master controller (23);
Position sensor (6), for gathering the screw position information of injection machine, and sends described injection servo controller (15) to;
Pressure sensor (7), for gathering the melt pressure information of barrel front portion, and sends described injection servo controller (15) to;
Thermocouple (2), for gathering the temperature information of barrel heating, and sends temperature control modules (31) to described in sending to;
Storing servo controller (18), for receiving the running instruction of described main controller (23), the storing servomotor (16) of controlling injection machine under described running instruction effect carries out storing.
Material tube heater (1), receives the heating instruction of temperature control modules (31), for barrel (4) is heated.
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| JP5657818B2 (en) * | 2013-03-15 | 2015-01-21 | ファナック株式会社 | Resin discharging device for injection molding machine |
| JP6046191B2 (en) | 2015-04-01 | 2016-12-14 | ファナック株式会社 | Control device for injection molding machine having resin purge function |
| CN108000822A (en) * | 2017-12-06 | 2018-05-08 | 深圳市深格兰机电科技有限公司 | A kind of injecting plasticizing device and its control system and plasticizing method |
| 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 |
| JP7277327B2 (en) * | 2019-09-20 | 2023-05-18 | ファナック株式会社 | 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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| JPH0725116B2 (en) * | 1986-10-30 | 1995-03-22 | フアナツク株式会社 | Injection molding machine that can be started and stopped remotely |
| JP2593533B2 (en) * | 1988-11-09 | 1997-03-26 | 東芝機械株式会社 | Fully automatic operation system of injection molding machine |
| CN201009410Y (en) * | 2006-11-07 | 2008-01-23 | 新普塑(上海)机械有限公司 | Full-electric plastic injection machine control device |
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