CN204029517U - Injection molding machine electrically permanent magnet cupula magnetizing and demagnetizing controller - Google Patents
Injection molding machine electrically permanent magnet cupula magnetizing and demagnetizing controller Download PDFInfo
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- CN204029517U CN204029517U CN201420320666.0U CN201420320666U CN204029517U CN 204029517 U CN204029517 U CN 204029517U CN 201420320666 U CN201420320666 U CN 201420320666U CN 204029517 U CN204029517 U CN 204029517U
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Abstract
The utility model discloses a kind of injection molding machine electrically permanent magnet cupula magnetizing and demagnetizing controller, include power module, rectification filtering module, IGBT module, output loop, PLC, main control module and guidance panel, described rectification filtering module is connected with IGBT module, IGBT module is connected with the sucker on Injection Motor Template and solid plate by output loop, output loop is connected with Hall element, sucker is connected with position transducer, Hall element, position transducer, IGBT module, PLC and guidance panel are connected with main control module respectively.The utility model the change of Real-Time Monitoring output voltage or electric current can go forward side by side Row sum-equal matrix to reach the change of sucker magnetic force thus to control injection molding machine sucker, effectively prevents sucker magnetic force not enough and causes the danger that comes off; There is the sucker location of workpiece simultaneously and detect defencive function and the effective communication achieving injection molding machine and controller.
Description
Technical field
The utility model relates to a kind of magnetizing and demagnetizing controller, particularly relates to a kind of injection molding machine electrically permanent magnet cupula magnetizing and demagnetizing controller.
Background technology
Injection molding machine is in injection moulding process, and require frequent maintenance and replacement mould, and this relates to the installation and removal of mould.Existing injection machine mould adopts mechanical system to carry out dismounting mostly, and mechanical type dismounting needs manpower and the time of at substantial.And in recent years, along with popularizing of electric permanent-magnet suction disc technology, electric permanent magnetic disc is applied to effective way injection molding machine becoming alternative mechanical type dismounting.Which on the cope match-plate pattern and lower bolster of injection molding machine, installs electric permanent-magnet suction disc respectively, utilize electric permanent-magnet suction disc to clamp and unclamp mould, thus solving the injection machine mould dependent manual operation heavy when clamping unloading, having saved the operating time, save labour, improve operating efficiency.The normal need of work magnetizing and demagnetizing controller of electric permanent-magnet suction disc controls, existing injection molding machine sucker controller does not have corresponding sucker magnetic force checkout gear and position detecting device, after controller magnetizes, sucker magnetic force cannot be detected and whether reach requirement and in matched moulds process, whether mould sends out movement, if be subjected to displacement, possibility mold damage in matched moulds process; Magnetic force deficiency may cause mould to come off, event of hurting sb.'s feelings; Simultaneously there is no corresponding communication apparatus between existing injection molding machine and controller, thus make controller fault-signal cannot be sent in time to injection molding machine it is stopped immediately, very easily accidents caused.
Utility model content
Main purpose of the present utility model is to provide a kind of injection molding machine electrically permanent magnet cupula magnetizing and demagnetizing controller, solve existing injection molding machine magnetizing and demagnetizing controller cannot the change in location of Real-Time Monitoring sucker magnetic force change and mould response in time and cannot and injection molding machine between carry out the defect of real-time communication.
In order to realize goal of the invention, the technical scheme that the utility model adopts is, a kind of injection molding machine electrically permanent magnet cupula magnetizing and demagnetizing controller, include power module, rectification filtering module, IGBT module, output loop, PLC, main control module and guidance panel, described rectification filtering module is connected with IGBT module, IGBT module is connected with the sucker on Injection Motor Template and solid plate by output loop, output loop is connected with Hall element, sucker is connected with position transducer, Hall element, position transducer, IGBT module, PLC and guidance panel are connected with main control module respectively.
Feature of the present utility model is also, IGBT module adopts H-bridge circuit to arrange, described H-bridge circuit is made up of four groups of IGBT driving chip, and described main control module adopts MCU chip.
Rectification filtering module includes three phase rectifier bridge circuit and filter-capacitor circuit, and current rectifying and wave filtering circuit two ends are connected with the high-pressure side of H-bridge circuit and low-pressure end respectively;
Two output U of H-bridge circuit hold and W end is connected to a Hall element, one of them Hall element is connected with output loop relay, another Hall element is connected with common port relay, and the current feedback terminal VIOUT on two Hall elements is connected with current signal receiving terminal IOUT1 and IOUT2 of MCU chip respectively;
The pwm signal output of MCU chip and polarity switch signal output are by sending into the pwm signal receiving terminal of IGBT driving chip after AND gate, IGBT driving chip is connected with IGBT drive end by inner high-low pressure isolating device.
Low-voltage variation and the current protecting circuit of AND gate chip composition is provided with between igbt chip and MCU chip; Hall element to be connected with MCU chip by comparison circuit and rest-set flip-flop circuit and to realize low-voltage variation and current protection.
Output loop adopts independently four group relay passages to control four pieces of suckers that Injection Motor Template and cover half are pulled respectively.
The moving platen of injection molding machine and cover half are pulled and are respectively arranged with a position transducer, and two position transducers are connected delivering position variable signal respectively by one group of photoelectric coupled circuit with MCU chip.
Operating grip on guidance panel, operating grip is provided with and fills demagnetization key switch.
The beneficial effects of the utility model are:
1) the utility model adopts optimum configurations and Hall element gather output variable and adopt IGBT module to pass through direction and the size of control PWM value, realize the change of output voltage or electric current thus control injection molding machine sucker, to reach the change of sucker magnetic force, effectively prevent sucker magnetic force not enough and cause the danger that comes off;
2) the utility model adopts and has the sucker location of workpiece and detect defencive function, and the change in location of Real-Time Monitoring mould also sends fault-signal, effectively prevents the damage that mold movement causes;
3) be provided with between controller of the present utility model and injection molding machine PLC for by fault status signal to injection molding machine transmission, realize the effective communication between controller and injection molding machine, making when breaking down injection molding machine stop in time, preventing contingency;
4) the utility model has complete low-voltage variation and current protecting circuit, and the signal that can give the alarm when breaking down;
5) the utility model is provided with and fills demagnetization key switch, can prevent operating personnel's misoperation;
6) the utility model guidance panel adopts key switch can realize the optimum configurations such as password, function setting and the voltage that magnetizes, demagnetization time and interlock protection point.The charactron simultaneously arranged and triode can show failure code and dynamic bit code.
Accompanying drawing explanation
Fig. 1 is functional realiey block diagram of the present utility model;
Fig. 2 is overall circuit configuration schematic diagram of the present utility model;
Fig. 3 is the utility model controller in-line power electrical block diagram;
Fig. 4 is protective circuit structural representation of the present utility model;
Fig. 5 is operation panel circuit structural representation of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail.
The utility model provides a kind of injection molding machine electrically permanent magnet cupula magnetizing and demagnetizing controller, as shown in Figure 1, include power module, rectification filtering module, IGBT module, output loop, PLC, main control module and guidance panel, described rectification filtering module is connected with IGBT module, IGBT module is connected with sucker by output loop, described output loop is connected with Hall element, described sucker is connected with position transducer, and described Hall element, position transducer, IGBT module, PLC and guidance panel are connected with main control module respectively.
Basic functional principle of the present utility model is: input power carries out forming high voltage direct current after rectification and filtering through rectification filtering module, H bridge loop in IGBT module exports variable PWM ripple, by the outbound course of change H bridge and the size of PWM value, realize the change of output voltage or electric current thus control injection molding machine sucker, to reach the change of sucker magnetic force.Main control loop adopts MCU chip to control, and adopt optimum configurations and Hall element to gather output variable, form closed loop servo system, reliable and stable output current or voltage, realize, to the reliable control of sucker, producing stable magnetic force.The template of injection molding machine is divided into moving platen and solid plate; wherein moving platen is divided into two pieces of suckers; solid plate is divided into two pieces of suckers; controlled by four passages exported respectively; each passage can independently carry out filling demagnetization operation; and every road can independently regulate, there is parameter automatic Memory, fault and automatically protect and the advanced function such as failure code display.On sucker, arrange corresponding position transducer carry out detection to die location and prevent mould to be moved mold damage simultaneously.
During concrete enforcement, as shown in Figure 2, the main power source current supply circuit part of this circuit, input power R, S, T is through three-phase commutation bridge D0, filter capacitor C01, C02 and divider resistance R52, + 500V high voltage direct current is formed after R53, be input to+500V high-pressure side (positive pole) and the GND low-pressure end (negative pole) of the H bridge of two IGBT module T1 and T2 composition, control two-phase H bridge loop, make U, W end exports the DC PWM ripple of size and Orientation change, MCU chip U2 sends CH1 ' respectively by chip U19, CH2 ', CH3 ', CH4 ', CHCOM ' signal is to relay J DQ5, JDQ6, JDQ7, JDQ8 and JDQ9 controls, JDQ9 is public terminal, connected by the selection of relay J DQ5-8 and control four external road electric permanent-magnet suction discs.H bridge is controlled by four groups of isolation IGBT driving chip, and wherein the U-phase upper arm of H bridge is controlled by driving chip U5, and underarm is controlled by U6, and in W phase, brachium pontis is controlled by U8, and underarm is controlled by U7.This chip has low-voltage variation, and high pressure UCE protects.
In the course of work, H bridge operation principle is as follows: when magnetizing, PWM1 input high level, PWM2 input low level, PWM3 input low level, PWM4 input high level, and U end exports high level, and W holds output low level, forms the forward voltage from U to V; When demagnetizing, U holds V to hold and first forms negative voltage (PWM1 input low level, PWM2 input high level, PWM3 input high level, PWM4 input low level).By regulating PWM duty ratio, the size of output voltage can be changed.
Control signal is added to IGBT driving chip U5 by MCU chip U2 output pwm signal and polarity switch signal C1, C2, C3, C4 by AND gate IC3, and U6, U7 and U8 output to the drive end of T1, T2 jointly after realizing high-low pressure isolation.When polarity switch signal is low level, IC3 and door export as low level, forbid that igbt chip exports.
As shown in Figure 3, controller in-line power part, input power R, T are after transformer TR1, produce and organize voltage more, the voltage that wherein winding TR1-4 produces produces 12V voltage by U13 voltage stabilizing and powers to output loop suction Control terminal after rectifying tube D24, D25, D26 and D27 rectification and filter capacitor E3 filtering; Powered to MCU chip U2 by the 5V voltage produced after U18 voltage stabilizing; VOL voltage is produced for MCU chip sampling (reaction input voltage size) after resistance R45 and VR1 dividing potential drop.Winding TR1-1 produces+15V2 after rectifying and wave-filtering and voltage stabilizing, GND2 ,-5V2 voltage provides positive-negative power to H bridge U-phase upper arm driving chip U5; Winding TR1-2 produces+15V3, GND3 ,-5V2 voltage provides positive-negative power to H bridge W phase upper arm driving chip U8; Winding T1-3 produces+15V1, GND1 ,-5V1 voltage provides positive-negative power to H bridge underarm driving chip U6, U7; Winding T1-5 produces+24V, GND0 and provides 24V power supply to outside terminal and guidance panel.
The adjustment of PWM is by carrying out AD sampling to VOL voltage and carry out AD sampling to IOU2, IOU1 that Hall element U16, U17 detect, being exported by inner pid algorithm control PWM, forms closed-loop control system.PID control procedure can be divided into Voltage loop and electric current loop.Voltage loop is the output voltage values according to setting, exports PWM, by the magnitude of voltage VOL of sampling and the magnitude of voltage of setting being compared, utilizing difference to revise the output valve of PWM, reaching the object that output voltage is constant.Electric current loop is that Hall element U16, U17 detect electric current that IGBT module U, W phase export and obtain detection signal IOUT2, IOUT1 and enter MCU chip and carry out AD sampling, current value according to sampled value and setting compares, when sampled value is greater than set point, export PWM value to reduce, output current value is also along with reduction, thus it is consistent with set point to reach real output value; When the current value sampled is less than the current value of setting, export the increase of PWM value, output current value, also along with increase, to reach set point and output valve is equal, thus realizes the object of constant current output.Electric current loop or Voltage loop can be adopted according to the characteristic of load in side circuit.
Controller of the present utility model has complete low-voltage variation and current protecting circuit; as shown in Figure 4; 6 pin of igbt chip are connected with AND gate U1; the fault-signal of H bridge four brachium pontis is input to AND gate U1; when any one end of IGBT driving chip U5, U6, U7 and U8 detects fault-signal (6 pin set low); low level F0 can be produced at 8 pin of U1; F0 signal produces interrupt signal at 16 pin of MCU chip U2; MCU chip stops IGBT drive chip signal output at once; send alarm signal simultaneously, play a protective role.
Hall element U16; U17 detects output current; output current IO UT1 and IOUT2; respectively through the comparator entering IC1 composition after IC4A and IC4B dividing potential drop, when output current is large, IC1B, IC1D overturn the rest-set flip-flop that output low level triggers IC2 composition; wherein IC2B output low level makes F0 become low level; F0 signal produces interrupt signal at 16 pin of MCU chip U2, and MCU chip stops igbt chip output signal at once, plays a protective role.
The utility model has the sucker location of workpiece and detects defencive function; sucker CP1 and CP2 center have aperture; position transducer JX1 and JX2 is equipped with in centre, and position transducer is connected with MCU chip by optocoupler U15 with U23, the fluted A1 in both sides in mould MJ1 and MJ2; center is bulge-structure A; normal condition lower sensor JX1 just to the A place of MJ1, JX2 just to the A place of MJ2, the now output signal FSIN ' level of JX1; optocoupler U15 conducting FSIN is low level, is input to 76 pin of MCU chip.When displacement occurs MJ1, JX1 is just to arriving A1 place, optocoupler U15 conducting FSIN is 76 pin that high level delivers to MCU chip, and 42 human hair combing wastes of MCU chip go out FWOK ' high level, make the JDQ4 closing of contact by chip U3, OUT4 and OUTCOM conducting, by signal transmission to injection molding machine.
PLC is connected with injection molding machine, utilize relay contact by the fault status signal of controller to injection molding machine transmission, wherein relay J DQ1, JDQ2 fill the successful failure signal of demagnetization for transmission, relay J DQ3, JDQ4 are for transmitting sucker position signalling, and relay J DQ10 is used for the fault-signal of transfer control inside.
Supportingly on guidance panel of the present utility model be provided with operating grip, handle is provided with key switch, key switch is used for the fault-operation protection of operating personnel, when key switch be placed in magnetize allow position time, can only operation of magnetizing be carried out; When key switch is placed in demagnetization permission position, demagnetization operation can only be carried out.When equipment normally runs, sucker can only carry out operation of magnetizing, and equipment management personnel chooses by key switch the state of magnetizing, and operation of now can only magnetizing, can not demagnetize, and prevents operating personnel's misoperation, improves fail safe.
Guidance panel adopts key switch, completes optimum configurations and adjustment, as shown in Figure 5, U18 be charactron for display parameters and failure code, U17 drives the display of charactron segment encode, such as E06, and representing load aspect fault, may be the fault such as load short circuits or electric leakage.Q8-Q11 is used for the display of dynamic bit code; Button K1, K2, K3, K4 are used for password, function setting and parameter and regulate.Parameter aspect specifically can set multiple parameters such as the voltage that magnetizes, demagnetization time and interlock protection point.
More than show and describe general principle of the present utility model, principal character and advantage of the present utility model; above-mentioned execution mode and specification are principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope, the utility model also has various changes and modifications, and these changes and improvements all fall in claimed scope of the present utility model.The protection range that the utility model requires is defined by claims and equivalent thereof.
Claims (7)
1. an injection molding machine electrically permanent magnet cupula magnetizing and demagnetizing controller, it is characterized in that, include power module, rectification filtering module, IGBT module, output loop, PLC, main control module and guidance panel, described rectification filtering module is connected with IGBT module, IGBT module is connected with the sucker on Injection Motor Template and solid plate by output loop, described output loop is connected with Hall element, described sucker is connected with position transducer, described Hall element, position transducer, IGBT module, PLC and guidance panel are connected with main control module respectively.
2. injection molding machine electrically permanent magnet cupula magnetizing and demagnetizing controller as claimed in claim 1, is characterized in that, described IGBT module adopts H-bridge circuit to arrange, described H-bridge circuit is made up of four groups of IGBT driving chip, and described main control module adopts MCU chip.
3. injection molding machine electrically permanent magnet cupula magnetizing and demagnetizing controller as claimed in claim 2, it is characterized in that, described rectification filtering module includes three phase rectifier bridge circuit and filter-capacitor circuit, and current rectifying and wave filtering circuit two ends are connected with the high-pressure side of H-bridge circuit and low-pressure end respectively;
Two output U of described H-bridge circuit hold and W end is connected to a Hall element, one of them Hall element is connected with output loop relay, another Hall element is connected with common port relay, and the current feedback terminal VIOUT on two Hall elements is connected with current signal receiving terminal IOUT1 and IOUT2 of MCU chip respectively;
The pwm signal output of described MCU chip and polarity switch signal output are by sending into the pwm signal receiving terminal of IGBT driving chip after AND gate, IGBT driving chip is connected with IGBT drive end by high-low pressure isolating device.
4. injection molding machine electrically permanent magnet cupula magnetizing and demagnetizing controller as claimed in claim 3, is characterized in that, is provided with low-voltage variation and current protecting circuit that AND gate chip forms between described igbt chip and MCU chip; Hall element to be connected with MCU chip by comparison circuit and rest-set flip-flop circuit and to realize low-voltage variation and current protection.
5. injection molding machine electrically permanent magnet cupula magnetizing and demagnetizing controller as claimed in claim 3, is characterized in that, described output loop adopts independently four group relay passages to control four pieces of suckers that Injection Motor Template and cover half are pulled respectively.
6. injection molding machine electrically permanent magnet cupula magnetizing and demagnetizing controller as claimed in claim 5, it is characterized in that, the moving platen of described injection molding machine and cover half are pulled and are respectively arranged with a position transducer, and two position transducers are connected delivering position variable signal respectively by one group of photoelectric coupled circuit with MCU chip.
7. injection molding machine electrically permanent magnet cupula magnetizing and demagnetizing controller as claimed in claim 1, is characterized in that operating grip on described guidance panel operating grip is provided with and fills demagnetization key switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420320666.0U CN204029517U (en) | 2014-06-17 | 2014-06-17 | Injection molding machine electrically permanent magnet cupula magnetizing and demagnetizing controller |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420320666.0U CN204029517U (en) | 2014-06-17 | 2014-06-17 | Injection molding machine electrically permanent magnet cupula magnetizing and demagnetizing controller |
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| CN204029517U true CN204029517U (en) | 2014-12-17 |
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| CN201420320666.0U Active CN204029517U (en) | 2014-06-17 | 2014-06-17 | Injection molding machine electrically permanent magnet cupula magnetizing and demagnetizing controller |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107088778A (en) * | 2016-06-29 | 2017-08-25 | 株洲悍威磁电科技有限公司 | A kind of electric permanent magnetism control system and electric permanent-magnet suction disc material changing of the relative positions detection method |
| CN107731449A (en) * | 2017-11-17 | 2018-02-23 | 江门麦威电子科技有限公司 | A kind of simple magnet charger |
| CN111971155A (en) * | 2018-04-18 | 2020-11-20 | 克斯美库股份有限公司 | Magnetic clamping device |
-
2014
- 2014-06-17 CN CN201420320666.0U patent/CN204029517U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107088778A (en) * | 2016-06-29 | 2017-08-25 | 株洲悍威磁电科技有限公司 | A kind of electric permanent magnetism control system and electric permanent-magnet suction disc material changing of the relative positions detection method |
| CN107731449A (en) * | 2017-11-17 | 2018-02-23 | 江门麦威电子科技有限公司 | A kind of simple magnet charger |
| CN111971155A (en) * | 2018-04-18 | 2020-11-20 | 克斯美库股份有限公司 | Magnetic clamping device |
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Addressee: Sun Yaozhou Document name: payment instructions |