CN100542774C - A kind of method and apparatus of plastic jetting-moulding machine fast-module-packaging - Google Patents
A kind of method and apparatus of plastic jetting-moulding machine fast-module-packaging Download PDFInfo
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- CN100542774C CN100542774C CNB2007100248295A CN200710024829A CN100542774C CN 100542774 C CN100542774 C CN 100542774C CN B2007100248295 A CNB2007100248295 A CN B2007100248295A CN 200710024829 A CN200710024829 A CN 200710024829A CN 100542774 C CN100542774 C CN 100542774C
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- 238000000034 method Methods 0.000 title claims abstract description 8
- 230000005347 demagnetization Effects 0.000 claims abstract description 19
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- 230000001360 synchronised effect Effects 0.000 claims abstract description 12
- 238000012360 testing method Methods 0.000 claims abstract description 8
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- 230000006870 function Effects 0.000 description 4
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- 238000010586 diagram Methods 0.000 description 3
- 239000012467 final product Substances 0.000 description 3
- 238000001746 injection moulding Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 1
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Abstract
The method of plastic jetting-moulding machine fast-module-packaging: can fill the demagnetization magnetic suction disc in order to the fixedly dynamic model of injection machine and quiet mould respectively at injection machine being provided with two of solid moving platen and solid plates, the inside of dynamic model and quiet mould matched moulds is provided with die cavity.Be provided with the permanent magnet unit of arrangement in the magnetic force platform, and be provided with and fill degaussion coil and the permanent magnet unit is magnetized and demagnetize; Be provided with the magnetic induction intensity testing circuit: the electromotive force of sensor output is exported to microprocessor I/O mouth through voltage comparator after relatively again after difference is amplified 10 times; Be provided with circuit for generating synchronous signals, power synchronization signal picked-up circuit, input is the 15V alternating current of transformer output, arrive operational amplifier through current-limiting resistance, be made into square-wave signal, pass through the 3K current-limiting resistance again, be input to the interruption input port and the I/O mouth of microprocessor.
Description
Technical field
The present invention relates to the square law device of plastic jetting-moulding machine fast-module-packaging tool.
Background technology
Injection machine is widely used in the plastic products production of all trades and professions.Produce at small batch under the situation of plastic products, traditional manual loading and unloading mould of plastics (comprising moulds such as plastic uptake) length consuming time has a strong impact on production efficiency (the sleeving plastic mould that changes the outfit usually needs about 3 hours).
Summary of the invention
Plastic jetting-moulding machine fast-module-packaging controller of the present invention can a mould time shorten to half an hour with loading and unloading, be traditional bolt fixed mode consuming time 1/6.Adopt the injection moulding function of this device to enhance productivity greatly.
Technical solution of the present invention is: the method for plastic jetting-moulding machine fast-module-packaging: can fill the demagnetization magnetic suction disc in order to the fixedly dynamic model of injection machine and quiet mould respectively at injection machine being provided with two of solid moving platen and solid plates.The folding of dynamic model and quiet mould, the inside of dynamic model and quiet mould matched moulds is provided with die cavity.Be provided with the permanent magnet unit of arrangement in the magnetic suction disc (platform), and be provided with and fill degaussion coil and the permanent magnet unit is magnetized and demagnetize; Be provided with the magnetic induction intensity testing circuit: be made up of linear hall sensor, constant-current source circuit, differential amplifier circuit, voltage comparator, constant-current source is used for providing operating current to Hall element; At Hall element current input terminal and current input terminal and 1 Rx, according to the sensor situation adjustment, make sensor identical electromotive force of output under same magnetic induction intensity, the electromotive force of sensor output is exported to microprocessor I/O mouth through voltage comparator after relatively again after difference is amplified 10 times; Be provided with circuit for generating synchronous signals, power synchronization signal picked-up circuit, input is the 15V alternating current of transformer output, arrive operational amplifier through current-limiting resistance, be made into square-wave signal, pass through the 3K current-limiting resistance again, be input to the interruption input port and the I/O mouth of microprocessor; Be provided with same thyristor gating circuit, the control signal of microprocessor I/O mouth output is through photoelectrical coupler, pass through a line bag of large power triode pulse transformer again, isolate two other line bag of rear drive pulse transformer by pulse transformer, drive two high-power one-way SCRs simultaneously, when system magnetized work, microprocessor triggered controllable silicon and makes major loop pass through voltage waveform according to power supply zero passage synchronizing signal; When work was demagnetized in system, microprocessor triggered controllable silicon and makes the voltage waveform of major loop by progressively reducing according to power supply zero passage synchronizing signal, made to fill and passed through the descending alternating current of power in the degaussion coil, and permanent-magnet material is effectively demagnetized.
When the magnetic induction of control magnetic force platform surpasses 200GS, the magnetic state of promptly having substituted the bad for the good, comparator is output as high level, is output as low level when being lower than 200GS.By this simple detection circuit, microprocessor can detect the magnetizing/demagnetizing state of magnetic force table top exactly like this, guarantees the security of system reliably working.Circuit for generating synchronous signals, power synchronization signal picked-up circuit, input is the 15V alternating current of transformer output, to operational amplifier, is made into square-wave signal through current-limiting resistance, passes through the 3K current-limiting resistance again, to the interruption input port and the I/O mouth of microprocessor.
Thyristor gating circuit, the control signal of microprocessor I/O mouth output is through photoelectrical coupler, pass through a line bag of large power triode pulse transformer again, isolate two other line bag of rear drive pulse transformer by pulse transformer, drive two high-power one-way SCRs simultaneously, when system magnetizes work, microprocessor is according to power supply zero passage synchronizing signal, the triggering controllable silicon makes major loop pass through voltage waveform (only needs a half-wave to get final product when magnetizing in theory, but effectively magnetize in order to guarantee during real work, the control major loop is by 3 half-waves.)。When work was demagnetized in system, microprocessor triggered controllable silicon and makes the voltage waveform of major loop by progressively reducing according to power supply zero passage synchronizing signal, made to fill and passed through the descending alternating current of power in the degaussion coil, and permanent-magnet material is effectively demagnetized.
The device of plastic jetting-moulding machine fast-module-packaging: described employing plastic jetting-moulding machine fast-module-packaging device can fill demagnetization magnetic suction disc, multichannel magnetizing and demagnetizing controller, proximity transducer and Hall element etc. and forms by being respectively applied for two of solid moving platen and solid plates, adopts magnetic force additional bolts fixed plastics mould; Gu two of moving platen and solid plates can fill the structure of demagnetization magnetic suction disc: be provided with the permanent magnet unit of arrangement in the magnetic force platform, and be provided with and fill degaussion coil and the permanent magnet unit is magnetized and demagnetize; Multichannel magnetizing and demagnetizing controller and two can fill the demagnetization magnetic suction disc; Can fill the demagnetization magnetic suction disc is processed by the monoblock steel plate, size and fixing hole are according to the injection machine design of different model, inside is embedded with permanent-magnet material and fills degaussion coil accordingly, and each can fill in the demagnetization magnetic suction disc and be embedded with one near switch and a Hall element.Described multichannel magnetizing and demagnetizing controller is made of near switching signal conditioning and threshold value comparator, two passage Hall element signal conditions and threshold value comparator, controllable silicon and circuits for triggering, multichannel major loop relay and control circuit, big current detection circuit MCU system, keyboard and display part, circuit for generating synchronous signals, two passages; The input port that big current detection circuit, circuit for generating synchronous signals connect, two passages all connect the MCU system near the output of switching signal conditioning and threshold value comparator, two passage Hall element signal conditions and threshold value comparator; The output of MCU system connects controllable silicon and circuits for triggering, controllable silicon and circuits for triggering connect multichannel major loop relay and control circuit again.
Characteristics of the present invention are: adopt this device loading and unloading one time mould half an hour only consuming time, be traditional bolt fixed mode consuming time 1/6.Adopt the injection moulding function of this device to enhance productivity greatly.
Description of drawings
Fig. 1: plastic jetting-moulding machine fast-module-packaging device block diagram
Fig. 2: multichannel magnetizing and demagnetizing controller
Fig. 3: circuit for generating synchronous signals,
Fig. 4: thyristor gating circuit
Fig. 5: the magnetic induction intensity testing circuit,
Fig. 6 approach signal testing circuit
The specific embodiment
1, multichannel magnetizing and demagnetizing controller functional block diagram such as Fig. 2: mainly partly form near switching signal conditioning and threshold value comparator, two passage Hall element signal conditions and threshold value comparator, controllable silicon and circuits for triggering, multichannel major loop relay and control circuit, big current detection circuit etc. by MCU system (containing 89C51 single-chip microcomputer, watchdog circuit, memory), keyboard and display part, circuit for generating synchronous signals, PLC interface circuit, two passages.In the automatically controlled multichannel magnetizing and demagnetizing controller of this device, adopt microprocessor as the system core, can realize powering up the control of phase place, power and time easily, reach and well fill demagnetization effectiveness, have with injection machine in the function of communication of higher level's machines such as PLC, can accept the interior PC control of injection machine easily and send duty, realize the whole operability of equipment to it.Be embedded with a proximity transducer and a Hall element in the every magnetic suction disc, when mould is installed, earlier with the mould bolting, this moment, the proximity transducer indicator lamp was bright, press the button that magnetizes, 0.3 in second the sucker of corresponding template is realized magnetizing (the sucker magnetic force of the magnetic of substituting the bad for the good can reach 8 kilograms every square centimeter), the pulling-out force in the injection moulding production process.This device operating power only is 3W, can turn-off controller power source after the mould adhesive, and magnetic force continues to keep.
2, the plastic jetting-moulding machine fast-module-packaging device is formed and general introduction
The plastic jetting-moulding machine fast-module-packaging device can fill demagnetization magnetic suction disc, multichannel magnetizing and demagnetizing controller, proximity transducer and Hall element etc. and forms by being respectively applied for two of solid moving platen and solid plates, adopts magnetic force additional bolts fixed plastics mould.Gu two of moving platen and solid plates can fill the demagnetization magnetic suction disc as shown in the figure.
As Fig. 1, device mainly is divided into two parts: multichannel magnetizing and demagnetizing controller and two can fill the demagnetization magnetic suction disc.Can fill the demagnetization magnetic suction disc is processed by the monoblock steel plate, size and fixing hole are according to the injection machine design of different model, inside is embedded with permanent-magnet material and fills degaussion coil accordingly, each can fill in the demagnetization magnetic suction disc and be embedded with one near switch and a Hall element, can respond to less than the metal material in the 0.8mm near switch, Hall element can be responded to greater than the magnetic field more than the 200GS.
Multichannel magnetizing and demagnetizing controller functional block diagram such as Fig. 2: mainly partly form near switching signal conditioning and threshold value comparator, two passage Hall element signal conditions and threshold value comparator, controllable silicon and circuits for triggering, multichannel major loop relay and control circuit, big current detection circuit etc. by MCU system (containing 89C51 single-chip microcomputer, watchdog circuit, memory), keyboard and display part, circuit for generating synchronous signals, PLC interface circuit, two passages.
3, plastic jetting-moulding machine fast-module-packaging device the key technical indexes:
1, power supply: 380VAC
2, power: about 3W
3, weight: about 100kg (the about 3kg of controller)
4, near the inductive switching distance: less than 0.8mm
5, Hall element induction range: greater than 200GS
6, magnetize (adhesive), demagnetize (release) working time: 0.3 second
7, magnetize the back magnetic force retention time: more than 10 years
5, the device of plastic jetting-moulding machine fast-module-packaging according to claim 3: it is characterized in that being provided with in addition the PLC interface circuit that is connected with the MCU system.
Multichannel magnetizing and demagnetizing controller each several part circuit design scheme
1, SCM system (comprising CPU, WTD, EEPROM)
Native system is selected the 89C51 single-chip microcomputer for use, and there are 4KflashROM (enough this instrument be used for storage program) and 128byteRAM in its inside.In order to preserve running parameter, select for use electrically erasable programmable ROM EEPROM24C01A to make additional storage in addition, it is the serial read-write mode, only takies 2 I/O mouths of single-chip microcomputer.
Also adopt 555 oscillating circuits and 74LS123 monostable flipflop in the design, constituted an easy watchdog circuit, make system have self-recovering function.The program fleet even system is interfered, watchdog circuit can make single-chip microcomputer reset, and system is recovered automatically.
2, circuit for generating synchronous signals
For can allow microprocessor control reliably controllable silicon in accordance with regulations phase place open and fill the demagnetization major loop, microprocessor must obtain the zero crossing of AC power exactly, we have designed following power synchronization signal picked-up circuit, input is the 15V alternating current of transformer output, arrive operational amplifier through current-limiting resistance, be made into the square-wave signal shown in figure three, pass through the 3K current-limiting resistance again, to the interruption input port and the I/O mouth of microprocessor.
3, thyristor gating circuit
The control signal of microprocessor I/O mouth output is through photoelectrical coupler, pass through a line bag of large power triode pulse transformer again, isolate two other line bag of rear drive pulse transformer by pulse transformer, drive two high-power one-way SCRs (as figure four thyristor gating circuits) simultaneously.When system magnetizes work, microprocessor is according to power supply zero passage synchronizing signal, trigger controllable silicon make major loop pass through as shown in Figure 4 voltage waveform (only to need a half-wave get final product when magnetizing in theory, but effectively to magnetize in order guaranteeing during real work, the control major loop passes through 3 half-waves.)。When work was demagnetized in system, microprocessor triggered controllable silicon and makes the voltage waveform of major loop by progressively reducing according to power supply zero passage synchronizing signal, made to fill and passed through the descending alternating current of power in the degaussion coil, and permanent-magnet material is effectively demagnetized.
The big current detection circuit of major loop
In order to guarantee to confirm whether add big electric current to filling degaussion coil, this device has designed the big current detection circuit of major loop, because need not accurately to measure main circuit power, in order to reduce cost, current transformer adopts the most easy scheme, adopt the 1W transformer framework, the big electric current line of major loop is gone here and there half-turn in skeleton, secondary employing φ 0.25 enamel-covered wire passes through full-wave rectification again around 3000 circles, voltage clamping and current limliting are input to the I/O mouth of microprocessor.Detect main circuit current simultaneously in the microprocessor magnetizing/demagnetizing process, if detect less than the indication that makes mistakes.
The magnetic induction intensity testing circuit
The magnetic induction intensity testing circuit is made up of shown in figure five sensor (linear hall sensor), constant-current source circuit, differential amplifier circuit, voltage comparator.
Constant-current source is used for providing operating current (5mA) to Hall element, because output differs greatly between each Hall element, so, at Hall element current input terminal and current input terminal and 1 Rx, according to the sensor situation adjustment, make sensor identical electromotive force of output under same magnetic induction intensity, the electromotive force of sensor output is exported to microprocessor I/O mouth through voltage comparator after relatively again after difference is amplified 10 times.As when detecting the magnetic induction of magnetic force platform above 200GS, the magnetic state of promptly having substituted the bad for the good, comparator is output as high level, is output as low level when being lower than 200GS.By this simple detection circuit, microprocessor can detect the magnetizing/demagnetizing state of magnetic force table top exactly like this, guarantees the security of system reliably working.
The PLC interface circuit
This controller can also receive PLC control, and PLC digital quantity delivery outlet changes the corresponding I/O mouth of microprocessor level by the control optocoupler, and the microprocessor main flow is constantly inquired about corresponding I/O mouth, makes corresponding operating.After microprocessor is finished one action (magnetize or demagnetize), by I/O control triode adhesive or decontrol relay on the wiring board, the relay normally open normally-closed contact is linked to each other with the digital quantity input port of PLC respectively, PLC has just obtained the duty of controller.
The approach signal testing circuit
Adopt the miniature proximity transducer of inductance type near switch, built-in comparator of sensor and trigger, output band NPN triode drives, 12 volts of operating voltages, only need provide probe power during use, get final product (as figure six) with entering the single-chip processor i/o mouth after the isolation of output signal process light idol, this circuit can be responded to less than the metal object in 0.8 millimeter, have only during work after the close chuck surface of mould, near the bright back of indicator lamp (the expression mould is close), effective by the button that magnetizes, other the time marquis invalid by the button that magnetizes.
Claims (4)
1, the method for plastic jetting-moulding machine fast-module-packaging: it is characterized in that being provided with magnetic suction disc that fixedly moving platen and two of solid plates can fill demagnetization in order to the fixedly dynamic model of injection machine and quiet mould respectively at injection machine, the inside of dynamic model and quiet mould matched moulds is provided with die cavity; Be provided with the permanent magnet unit of arrangement in the platform of magnetic suction disc, and be provided with and fill degaussion coil and the permanent magnet unit is magnetized and demagnetize; Be provided with the magnetic induction intensity testing circuit: be made up of linear hall sensor, constant-current source circuit, differential amplifier circuit, voltage comparator, constant-current source is used for providing operating current to Hall element; At Hall element current input terminal and current input terminal and 1 Rx, according to the sensor situation adjustment, make sensor identical electromotive force of output under same magnetic induction intensity, the electromotive force of sensor output is exported to microprocessor I/O mouth through voltage comparator after relatively again after difference is amplified 10 times; Be provided with circuit for generating synchronous signals, power synchronization signal picked-up circuit, input is the 15V alternating current of transformer output, arrive operational amplifier through current-limiting resistance, be made into square-wave signal, pass through the 3K current-limiting resistance again, be input to the interruption input port and the I/O mouth of microprocessor; Be provided with same thyristor gating circuit, the control signal of microprocessor I/O mouth output is through photoelectrical coupler, pass through a line bag of large power triode pulse transformer again, isolate two other line bag of rear drive pulse transformer by pulse transformer, drive two high-power one-way SCRs simultaneously, when system magnetized work, microprocessor triggered controllable silicon and makes major loop pass through voltage waveform according to power supply zero passage synchronizing signal; When work was demagnetized in system, microprocessor triggered controllable silicon and makes the voltage waveform of major loop by progressively reducing according to power supply zero passage synchronizing signal, made to fill and passed through the descending alternating current of power in the degaussion coil, and permanent-magnet material is effectively demagnetized.
2, the method for plastic jetting-moulding machine fast-module-packaging according to claim 1: when the platform magnetic induction that it is characterized in that controlling magnetic suction disc surpassed 200GS, the expression magnetic state of substituting the bad for the good relatively was output as high level with comparator, is output as low level when being lower than 200GS.
3, the device of plastic jetting-moulding machine fast-module-packaging: it is characterized in that to fill demagnetization magnetic suction disc, multichannel magnetizing and demagnetizing controller, proximity transducer and Hall element and forming employing magnetic suction disc additional bolts fixed plastics mould by being respectively applied for fixedly moving platen and two of solid plates; Fixedly two of moving platen and solid plates can fill the structure of demagnetization magnetic suction disc and be: be provided with the permanent magnet unit of arrangement in the platform of magnetic suction disc, and be provided with and fill degaussion coil and the permanent magnet unit is magnetized and demagnetize; Can fill the demagnetization magnetic suction disc is processed by the monoblock steel plate, size and fixing hole are according to the injection machine design of different model, inside is embedded with permanent-magnet material and fills degaussion coil accordingly, and each can fill in the demagnetization magnetic suction disc and be embedded with one near switch and a Hall element; Described multichannel magnetizing and demagnetizing controller is made of near switching signal conditioning and threshold value comparator, two passage Hall element signal conditions and threshold value comparator, controllable silicon and circuits for triggering, multichannel major loop relay and control circuit, big current detection circuit MCU system, keyboard and display part, circuit for generating synchronous signals, two passages; The input port that big current detection circuit, circuit for generating synchronous signals connect, two passages all connect the MCU system near the output of switching signal conditioning and threshold value comparator, two passage Hall element signal conditions and threshold value comparator; The output of MCU system connects controllable silicon and circuits for triggering, controllable silicon and circuits for triggering connect multichannel major loop relay and control circuit again.
4, the device of plastic jetting-moulding machine fast-module-packaging according to claim 3: it is characterized in that being provided with in addition the PLC interface circuit that is connected with the MCU system.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100248295A CN100542774C (en) | 2007-06-29 | 2007-06-29 | A kind of method and apparatus of plastic jetting-moulding machine fast-module-packaging |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2007100248295A CN100542774C (en) | 2007-06-29 | 2007-06-29 | A kind of method and apparatus of plastic jetting-moulding machine fast-module-packaging |
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| CN100542774C true CN100542774C (en) | 2009-09-23 |
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| CN103753763B (en) * | 2014-01-26 | 2017-01-04 | 宁波海迈克精密机械制造有限公司 | A kind of Magnetic template |
| CN113161103B (en) * | 2021-03-01 | 2022-12-16 | 江苏大学 | Device and method for quantitatively magnetizing and demagnetizing permanent magnet |
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Assignee: Dongguan weking Electronic Plastic Hardware Co. Ltd. Assignor: Nanjing University Contract record no.: 2010440001219 Denomination of invention: Plastic jetting-moulding machine fast-module-packaging method and apparatus thereof Granted publication date: 20090923 License type: Exclusive License Open date: 20080312 Record date: 20100819 |
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