CN201220474Y - Variable frequency energy-saving control device of adjustable-discharge pump injection moulding machine - Google Patents
Variable frequency energy-saving control device of adjustable-discharge pump injection moulding machine Download PDFInfo
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- CN201220474Y CN201220474Y CNU2008200935979U CN200820093597U CN201220474Y CN 201220474 Y CN201220474 Y CN 201220474Y CN U2008200935979 U CNU2008200935979 U CN U2008200935979U CN 200820093597 U CN200820093597 U CN 200820093597U CN 201220474 Y CN201220474 Y CN 201220474Y
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Abstract
The utility model discloses a device for controlling the frequency conversion and the energy conservation of a variable pump injection machine, which comprises a data acquiring and processing device, a PLC control unit and a transducer. The input end of the data acquiring and processing device is respectively connected with the output ends of a mold-shut device, a plastic injection device, a glue-smelting device, a cooling device, a die sinking device and an ejection device; the input end of the PLC control unit is connected with the output end of the data acquiring and processing device; the output end of the PLC control unit is respectively connected with the input ends of the mold-shut device, the plastic injection device, the glue-smelting device, the cooling device, the die sinking device and the ejection device; the input end of the transducer is connected with the output end of the PLC control unit; and the transducer receives control signals transmitted by the PLC control unit, and controls the rotate speed of the motor of the injection machine according to the control signals. Compared with the prior frequency-conversion injection machine which adopts proportional, integral and differential coefficient analog signals to control the technology, the device has the advantages of more remarkable energy saving effect, higher qualification rate and stability of manufactured products, and higher productivity.
Description
[technical field]
The utility model relates to injection molding apparatus, is specifically related to a kind of variable pump injection machine energy-saving and frequency-variable control device.
[background technology]
" energy-saving and emission-reduction " are national Eternal Theme, and electric energy is as secondary energy sources, and it consumes the relation that is directly proportional with environmental pollution.Energy-conservation of consumption reduction is not only imitated for enterprise's wound, also reaches the harmony of environment and nature simultaneously.For example, Shenzhen's power load in 2006 reaches 7,500,000 KW, and the data of announcing according in October, 2007 have reached 1018.8 ten thousand KW, and power consumption is big, and electric power resource is in short supply for a long time; On the other hand, injection moulding has already accounted for China process industry half of the country, and power consumption is very big, and only the area, Pearl River Delta is existing just up to a million injection machines, and therefore, the reducing energy consumption of injection machine has important recycling economy meaning and environment protection significance.
Injection machine 70% power consumption is in hydraulic power supply, for the quantitative hydraulic pump injection machine, its pump speed and output oil mass remain constant, but manufacturing technique requirent is constantly to change, like this, part hydraulic flow more than needed flows back to oil cylinder by flow proportion valve and pressure proportioning valve overflow, thereby causes waste of energy.Oil pump is a kind of square of torque load(ing), and the shaft power N of rotation speed n and flow Q, lift H and oil pump has following relation:
Q
1＝Q
2(n
1/n
2)；H
1＝H
2(n
1/n
2)
2；N
1＝N
2(n
1/n
2)
3
Wherein, the flow of oil pump is directly proportional with rotating speed, square being directly proportional of the lift of oil pump and rotating speed, cube being directly proportional of the shaft power of oil pump and rotating speed.
The computing formula of the shaft power P of motor is as follows:
P＝ρ×Q ×H ×10-3/η
C/η
P
In the formula: ρ-liquid (oil) density; η
C-gear efficiency; η
P-oil pump efficient
Wherein, the shaft power of motor is directly proportional with the flow Q of oil pump, with the oil pump efficiency eta
PBe inversely proportional to.
Than constant displacement pump, variable pump can be realized energy-conservation by solving the overflow problem.Suppose equal appointed condition and motor all with power frequency operation, when empty load of motor and underloading, constant displacement pump equates with the power consumption of variable pump, and when loading rate rising or full load, constant displacement pump is then many than the variable pump power consumption because of overflow.
In addition, when the output of the hydraulic pressure discharge capacity of variable pump equalled zero, the power factor of its motor under power frequency was lower than constant displacement pump.Owing in the cycle that the injection machine plastic is produced fast (in 40 seconds), rely on capacitor compensation to be difficult to make power factor (PF) to reach 0.98.And capacitor does not allow the short time frequent switching to compensate, otherwise faults such as capacitor blast may take place in system.
Be down power run book (asynchronous motor, air compressor machine, fluid pump, blower fan etc. are with power frequency operation) load factor and power factor, the efficient table of comparisons:
Table 1
| Loading condition | Unloaded | 1/4 load (underloading) | 1/2 load (semi-load) | 3/4 load | Fully loaded |
| Power factor | 0.2 | 0.5 | 0.77 | 0.85 | 0.89 |
| Efficient | 0 | 0.78 | 0.85 | 0.88 | 0.87 |
Yet when load factor was 50% left and right sides under the power frequency, the efficient of variable pump injection machine motor was lower.As in plastic parts cooling, get process section such as working of plastics, the variable pump hydraulic power is output as zero, motor no-load running, this moment, its power factor was very low, idle energy consumption height.Existing a kind of injection machine energy-saving and frequency-variable control scheme, it is by gathering pressure, flow analog signals control frequency converter timing, and the ratio of analog transmitter, integration, differential circuit realize the limitation of regulation and control with analog quantity, cause that equipment reaction is blunt after the injection machine energy-saving transformation, production capacity reduces and the product quality qualification rate reduces, cause greatly negative influence to application, even have to stop using frequency converter because its negative effect is excessive.
[utility model content]
Main purpose of the present utility model solves the problems of the prior art exactly, and a kind of variable pump injection machine energy-saving and frequency-variable control device is provided, and can effectively realize reducing idle energy consumption by Energy Saving Control in injection moulding process, reaches good energy-saving effect.
For achieving the above object, the utility model provides a kind of variable pump injection machine energy-saving and frequency-variable control device, it is characterized in that:
Comprise data acquisition processing device, PLC control module and frequency converter,
The input of described data acquisition processing device links to each other with the output of mould shutting device, injection device, melten gel device, cooling device, die-sinking device and liftout attachment respectively, is used to gather the technology synchronous working status signal of said apparatus and this technology synchronous working status signal is converted to the technology synchronous digital signal;
The input of described PLC control module links to each other with the output of data acquisition processing device, the output of described PLC control module links to each other with the input of mould shutting device, injection device, melten gel device, cooling device, die-sinking device and liftout attachment respectively, described PLC control module is used to receive the technology synchronous digital signal of described data acquisition processing device output, and sends the technology synchronous control signal to mould shutting device, injection device, colloidal sol device, cooling device, die-sinking device and liftout attachment according to the technological action synchronous digital signal of input;
The input of described frequency converter links to each other with the output of described PLC control module, and described frequency converter is used to receive the control signal that described PLC control module transmits, and according to this control signal control injection machine rotating speed of motor.
Described data acquisition processing device links to each other with the input able to programme or the pulse input end of described frequency converter.
The beneficial effects of the utility model are:
1, the utility model is provided with frequency converter, adopt converter technique control variables pump motor frequency, carry out balance control according to Shooting Technique basic parameter and flow etc., can reduce motor zero load, underloading power consumption, reduce reactive current, improve the transformer capacity utilization rate, solve " low load with strong power " problem that existing variable pump injection machine exists.Be provided with the PLC control module simultaneously, can first science configure the frequency of each process section variable pump flow correspondence of injection moulding, and make the output frequency of frequency converter constant corresponding with the basic parameter of each process section of injection moulding.In the course of work, frequency converter is by the content of the address location of each process section port of drafting the output of parameter access PLC program, be that the PLC control module is exported with the programme-control frequency converter, thereby the control motor is with suitable frequency operation, make motor speed reach the technological datum requirement, realize that frequency converter and injection machine are real-time, synchronization modulation, make the energy-conservation stable operation of injection moulding process.
2, the utility model PLC control module receives the technology synchronous digital signal of data acquisition processing device output, and send control signal according to the technological action synchronous digital signal of importing and give frequency converter, variable frequency adjustment does not rely on pressure, the sampling of flow proportion valve analog signal, thereby it is stronger than the VFC adaptability that adopts analog control mode, the adjusting of data signal really reaches adjusted in concert, overcome the problem that hydraulic operation lags behind technological action, its power saving rate is more much better than the power savings of simulation frequency conversion, and digital converter Energy Saving Control mode has reduced power consumption to greatest extent.And variable frequency adjustment of the present utility model can also overcome the hyperharmonic less stress under the simulation variable frequency adjustment, thereby solves the problem that it influences product production capacity, quality.
3, the utility model has adopted PLC control, can realize the high accuracy and the high stability of control.PLC is digital control, and periodic duty digital control frequency precision is 0.01Hz, and modulus (A/D) control method frequency accuracy is 0.5Hz, and digital control precision is controlled high 50 times than modulus.PLC control module inside has outage to keep and the telegram in reply memory function, and like this, frequency converter can be controlled motor and repeat the implementing process cycle at setpoint frequency, and process speed deviation can not occur.When fluctuation of the instantaneous lightning of line voltage in the factory or outage, so the PLC control module constant frequency converter output motor of the input signal rotating speed of exporting to frequency converter keeps stable, original output and quality can be satisfied, injection machine output, constant product quality can be made.
4, the utility model adaptability is strong.Many injection machines do not have flow proportion valve and pressure proportioning valve as 600 tons and above coaxial many induction machine oil pump injection machines, old-fashioned oily system type (relay control formula) injection machine, can't realize simulating VFC, the utility model is by adopting the synchronizing signal of the PLC control module input injection machine technological action that data acquisition processing device obtained, scan, computing becomes binary number, need not gather signal by flow proportion valve and pressure proportioning valve, the unit sensor installation just can be realized the control to them.The technological datum parameter is to guarantee product yield, quality critical foundation, the utility model can be revised the technological datum parameter flexibly according to the different process and the different material condition of molding of injection moulding, PLC controls by actual demand, thereby appropriately adjust and set the frequency of each process section motor, be applicable to all kinds of variable pump injection machines.
5, of the present utility modelly apply simple and practical convenience, when transforming existing injection machine, the technological parameter that injection machine is stored can be sent in the PLC control module, its adjustability is compatible former injection machine production technology fully.
[description of drawings]
Fig. 1 is the structural representation of the utility model embodiment.
[specific embodiment]
Feature of the present utility model and advantage will be elaborated in conjunction with the accompanying drawings by embodiment.
Please refer to Fig. 1, variable pump injection machine energy-saving and frequency-variable control device, comprise data acquisition processing device 1, PLC control module 8 and frequency converter 9, the input of data acquisition processing device 1 respectively with each technology execution unit of injection machine: mould shutting device 2, injection device 3, melten gel device 4, cooling device 5, die-sinking device 6 links to each other with the output of liftout attachment 7, the input of PLC control module 8 links to each other with the output of data acquisition processing device 1, the output of PLC control module 8 respectively with mould shutting device 2, injection device 3, melten gel device 4, cooling device 5, die-sinking device 6 links to each other with the input of liftout attachment 7, the input of frequency converter 9 links to each other with the output of PLC control module 8, and the output of frequency converter 9 is coupled to controlled motor.Wherein, the port that links to each other with data acquisition processing device 1 of frequency converter 9 can be its input able to programme or pulse input end.During work, data acquisition processing device 1 is gathered the technology synchronous working status signal of above-mentioned each technology execution unit and is converted into the technology synchronous digital signal; PLC control module 8 receives the technology synchronous digital signal of data acquisition processing device 1 output, and sends the technology synchronous control signal to mould shutting device 2, injection device 3, colloidal sol device 4, cooling device 5, die-sinking device 6 and liftout attachment 7 according to the technology synchronous digital signal of input; Frequency converter 9 receives the control signal that PLC control module 8 transmits, and according to this control signal control injection machine rotating speed of motor.
The address location correspondence of frequency converter 9 inside writes the frequency of each process section; Injection machine CPU by the technological action of its I/O mouth control injection machine technology execution unit, on the other hand, sends the related process basic parameter of each process section into PLC control module 8 on the one hand.Data acquisition unit 1 is sent to the Shooting Technique status signal in the PLC control module 8, PLC control module 8 is according to writing after process handles, I/O output control signal by PLC control module 8, revise the pairing frequency values of the frequency address unit of frequency converter 9, reach the purpose of control motor speed.When last process section finished, under the PLC programme-control, frequency converter 9 automaticallyed switch and exports the motor frequency that next process section is set, thereby the hydraulic power of variable pump output and the reference parameter value of Shooting Technique are consistent.
The control of variable pump injection machine energy-saving and frequency-variable comprises real-time monitoring step, wherein gather the technology synchronous working status signal of the technology execution unit of corresponding each technology, and this technology synchronous working status signal handled, send the technology synchronous control signal according to the technology synchronous working status signal after handling then and control each technology execution unit.Monitoring step can be divided into following steps again in real time: the signals collecting step is used for collection technology synchronous working status signal; The signal treatment step is used for work asynchronously status signal establishment of technology is the technology synchronous digital signal; Judge comparison step, be used for technology synchronous digital signal and the parameter preset that is stored in the PLC control module are compared; The control step is sent the action that the technology synchronous control signal realizes controlling the technology execution unit of injection machine.In the control step, next technology is carried out in control when judging that comparison step satisfies the parameter preset that is stored in the PLC control module, otherwise returns the initial process section.
Process section such as the injection moulding course of work comprises Guan Mo, injection, melten gel, cooling, die sinking, eject specifically comprises following flow process:
Behind the Guan Mo, data acquisition processing device 1 is gathered the working state signal that closes mold technique, this working state signal establishment is binary digit, this binary signal is input to PLC control module 8 to be judged, when satisfying condition, carry out injection technology, otherwise close mould again, the condition that is satisfied wherein: 1) close when molding pressure satisfies preset value and down carry out, otherwise turning back to the pass mold technique restarts, down carry out when 2) limit switch satisfies preset value, otherwise turning back to the pass mold technique restarts, down carry out when 3) electronic ruler tolerance satisfies preset value, otherwise turn back to and close mold technique and restart 4) close the mould time and down carry out when satisfying preset value, otherwise turning back to the pass mold technique restarts; After the injection, data acquisition processing device 1 is gathered the working state signal of injection technology, this working state signal establishment is binary digit, this binary signal is input to PLC control module 8 to be judged, when satisfying condition, carry out melten gel technology, otherwise close mould again, the condition that is satisfied wherein: down carry out when 1) the injection amount satisfies preset value, otherwise turning back to the pass mold technique restarts, down carry out when 2) the injection time is satisfied preset value, otherwise turn back to the pass mold technique and restart 3) when satisfying preset value, down carries out by limit switch, otherwise turning back to the pass mold technique restarts; Behind the melten gel, data acquisition processing device 1 is gathered the working state signal of melten gel technology, this working state signal establishment is binary digit, this binary signal is input to PLC control module 8 to be judged, when satisfying condition, carry out process for cooling, otherwise close mould again, the condition that is satisfied wherein: down carry out when 1) electronic ruler tolerance satisfies preset value, otherwise turning back to the pass mold technique restarts, down carry out when 2) back pressure satisfies preset value, otherwise turning back to the pass mold technique restarts, down carry out when 3) limit switch satisfies preset value, otherwise turn back to the pass mold technique and restart 4) down carried out when the time, Δ t satisfied preset value, otherwise turning back to the pass mold technique restarts; After the cooling, data acquisition processing device 1 is gathered the working state signal of process for cooling, this working state signal establishment is binary digit, this binary signal is input to PLC control module 8 to be judged, when satisfying condition, carry out die sinking technology, otherwise close mould again, wherein the condition that is satisfied: down carry out when the retraction time is satisfied preset value otherwise turn back to the pass mold technique and restart, down carried out when the time, Δ t satisfied preset value otherwise turn back to the pass mold technique and restart; After the die sinking, data acquisition processing device 1 is gathered the working state signal of die sinking technology, this working state signal establishment is binary digit, this binary signal is input to PLC control module 8 to be judged, when satisfying condition, eject technology, otherwise close mould again, the condition that is satisfied wherein: down carry out when 1) limit switch satisfies preset value otherwise turn back to and close mold technique and restart 2) down carries out when electronic ruler tolerance satisfies preset value otherwise turn back to and close mold technique and restart; After ejecting, data acquisition processing device 1 is gathered the working state signal that ejects technology, this working state signal establishment is binary digit, this binary signal is input to PLC control module 8 to be judged, when satisfying condition, get goods, otherwise close mould again, wherein the condition that is satisfied: down carry out when limit switch satisfies preset value otherwise turn back to the pass mold technique and restart.
According to the technological datum parameter of following each process section, a kind of embodiment of the present utility model will finish following control:
The basic parameter that closes mold technique is: pressure 33%; Flow 40.5%; Electronic ruler distance 200; Close 3 seconds mould time.PLC obtains the pass mould parameter, and after the PLC routine processes, the output control signal is changed to 40Hz with the content of frequency converter frequency address H60, to satisfy the requirement of closing mold technique.
The basic parameter of the technology that shoots material is: pressure 40%; Flow 35%; Electronic ruler distance 30; Close 3 seconds mould time.PLC obtains the parameter that shoots material, and after the PLC routine processes, PLC output control signal is changed to 30Hz with the content of frequency converter frequency address H33, to satisfy the requirement of closing the technology that shoots material.
The basic parameter of pressurize technology is: pressure 30%; Flow 35%; Electronic ruler distance 30; Close 3 seconds mould time.PLC obtains the pressurize parameter, and after the PLC routine processes, the PLC output signal is changed to 30Hz with the content of frequency converter frequency address H33, to satisfy the requirement of closing pressurize technology.
The basic parameter of feed back technology is: pressure 38%; Flow 40%; Electronic ruler distance 50; 9 seconds feed back time.PLC obtains the feed back parameter, and after the PLC routine processes, the PLC output signal is changed to 38Hz with the content of frequency converter frequency address H39, to satisfy the requirement of closing feed back technology.
The basic parameter of process for cooling is: pressure 10%; Flow 20%; 39 seconds cool times.PLC obtains cooling parameter, and after the PLC routine processes, the PLC output signal is changed to 15Hz with the content of frequency converter frequency address H25, to satisfy the requirement of closing process for cooling.
The basic parameter of die sinking technology is: pressure 30%; Flow 32%; Electronic ruler distance 30; 4 seconds die sinking time.PLC obtains the die sinking parameter, and after the PLC routine processes, the PLC output signal is changed to 30Hz with the content of frequency converter frequency address H31, to satisfy the requirement of closing die sinking technology.
The basic parameter that ejects workpiece technology is: pressure 28%; Flow 30%; Electronic ruler distance 8; Eject 3 seconds workpiece time.PLC obtains and ejects the workpiece parameter, and after the PLC routine processes, the PLC output signal is changed to 28Hz with the content of frequency converter frequency address H29, closes the requirement that ejects workpiece technology to satisfy.
The basic parameter that workpiece technology is moved back on the top is: pressure 28; Flow 30; Electronic ruler distance 8; Move back 2 seconds workpiece time on the top.PLC obtains the top and moves back the workpiece parameter, and after the PLC routine processes, the PLC output signal is changed to 28Hz with the content of frequency converter frequency address H29, closes the requirement that workpiece technology is moved back on the top to satisfy.
Penetrating the advance basic parameter of technology of platform is: pressure 28%; Flow 30%; Electronic ruler distance 8; Penetrating platform advances 5 seconds time.PLC obtains and penetrates the platform parameter of advancing, and after the PLC routine processes, the PLC output signal is changed to 28Hz with the content of frequency converter frequency address H29, penetrates the advance requirement of technology of platform to satisfy to close.
Penetrate that the basic parameter of annealing process is behind the platform: pressure 28%; Flow 30%; Electronic ruler distance 8; Penetrate platform and retreat 5 seconds time.PLC obtains and penetrates platform and retreat parameter, and after the PLC routine processes, the PLC output signal is changed to 28Hz with the content of frequency converter frequency address H29, penetrates the advance requirement of technology of platform to satisfy to close.
Mode transfer advances, the basic parameter of back annealing process is: pressure 33%; Flow 40.5%; Electronic ruler distance 200.PLC obtains mode transfer and advances, retreats parameter, and through after the PLC routine processes, the PLC output signal is changed to 40Hz with the content of frequency converter frequency address H60, advances to satisfy mode transfer, the requirement of back annealing process.
The advance basic parameter of technology of neutron is: pressure 28%; Flow 30%; 3 seconds neutron time.PLC obtains the neutron parameter of advancing, and after the PLC routine processes, the PLC output signal is changed to 28Hz with the content of frequency converter frequency address H29, to satisfy the advance requirement of technology of neutron.
The basic parameter of annealing process is behind the neutron: pressure 28%; Flow 30%; 3 seconds neutron time.PLC obtains neutron and retreats parameter, and through after the PLC routine processes, the PLC output signal is changed to 28Hz with the content of frequency converter frequency address H29, to satisfy the requirement of annealing process behind the neutron.
More than, by PLC programme-control injection machine technology, till meeting the Shooting Technique reference parameter value.Each technological datum parameter of injection machine is adjustable, and the frequency of frequency converter is also along with Shooting Technique basic parameter up-down adjustment in this device.
The utility model is gathered mould shutting device 2 by data acquisition processing device 1, injection device 3, melten gel device 4, cooling device 5, the technology synchronous working status signal of die-sinking device 6 and liftout attachment 7, promptly gather the synchronizing signal of each technological process and be transferred to PLC control module 8 and carry out software program and be encoded to digitized signal, cooperate the frequency converter 9 inner content-datas that need to set the address, press setting data address visit PLC management software program output by injection machine CPU, the content of each process section port address unit, determine each technology running frequency, realize frequency converter and injection machine synchronous variable-speed, the variable pump flow pressure is equated with each process section actual kinetic energy consumption, and constant rate of production, the operation of stabilised quality ground, thus reach energy-efficient purpose.
Preferably carry out following improvement on the such scheme basis: when 1) the setting workman left the post for 60 seconds, control appliance cut off electrical source of power automatically, and injection machine is in electricity-saving state.2) enter complicated technology section (embedding dress handware, plastic parts secondary operations as plastic parts) after 10 seconds, PLC control switches to the 15HZ frequency, the operation of injection machine place power save mode.Because these two sections time waste of energy are very big, increase by two human and manage control automatically, can realize further energy-conservation effect.
Below case illustrates power savings of the present utility model by experiment:
Oil pump electrical machinery power is 30KW, shared kilowatt-hour meter of power frequency operation and converting operation and power-factor meter, and product is created conditions identical.
Institute's wasted work rate: P=1.732 * U * I * COS Φ * η---1., wherein, U: voltage, I: average current, COS Φ: power factor, η: mechanical efficiency.
One, power frequency experiment:
1, power frequency is tested per hour power consumption, and voltage is that 387V, no-load current are that 25 peaces, average current are 25 peaces, and power factor is 0.41, and mechanical efficiency is 0.9.Get by 1. formula:
P＝1.732×387V×25A×0.41×0.9
＝6.2KW
Power consumption: 6.2KWh (degree) per hour
Power frequency takies transformer or generator capacity: S
Apparent energy=1.732 * 387 * 25=16 (KVA)
Two, frequency conversion experiment:
2, test point is constant, and frequency conversion power saving is tested per hour power consumption, and voltage is 387V, and no-load current is 2 peaces, average current 7 peaces, and power factor is 0.98, mechanical efficiency is 0.9.By formula 1. get:
P＝1.732×387V×7A×0.98×0.9
＝4.1KW
Power consumption :=4.1KW h (degree) per hour
Frequency conversion takies transformer or generator capacity: S
Apparent energy=1.732 * 387 * 7=4.6 (KVA)
The reactive loss electric weight that can reduce is: 16KVA-4.6KVA=11.4KVA.
Very big from above actual measurement variable pump motor reactive loss, it influences power system, transformer, generator output.Unit experiment injection machine power of motor is 30KW, actual electricity consumption 6.1KW.h, the loss of transformer capacity of idle power has 11.4KVA, the utility model is equivalent to bring the energy-saving efficiency of saving the 11.4KVA transformer capacity, equal to save the capacity of 110 tons of injection machines (11KW, per hour power consumption 3 degree) fluid pressure motor.
Compare with the frequency conversion injection machine that adopted ratio, integration, differential analog control technology in the past, the energy-saving effect of variable pump injection machine energy-saving and frequency-variable control device of the present utility model is more remarkable, qualification rate, the stability of the product of producing are higher, and production capacity is higher, do not influence the production cycle.
Above content be in conjunction with concrete preferred implementation to further describing that the utility model is done, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, under the prerequisite that does not break away from the utility model design, can also make some simple deduction or replace, all should be considered as belonging to protection domain of the present utility model.
Claims (2)
1. variable pump injection machine energy-saving and frequency-variable control device is characterized in that:
Comprise data acquisition processing device (1), PLC control module (8) and frequency converter (9),
The input of described data acquisition processing device (1) links to each other with mould shutting device (2), injection device (3), melten gel device (4), cooling device (5), die-sinking device (6) and the output of liftout attachment (7) respectively, is used to gather the technology synchronous working status signal of said apparatus and this technology synchronous working status signal is converted to the technology synchronous digital signal;
The input of described PLC control module (8) links to each other with the output of data acquisition processing device (1), the output of described PLC control module (8) respectively with mould shutting device (2), injection device (3), melten gel device (4), cooling device (5), die-sinking device (6) links to each other with the input of liftout attachment (7), described PLC control module (8) is used to receive the technology synchronous digital signal of described data acquisition processing device (1) output, and sends the technology synchronous control signal to mould shutting device (2) according to the technology synchronous digital signal of input, injection device (3), colloidal sol device (4), cooling device (5), die-sinking device (6) and liftout attachment (7);
The input of described frequency converter (9) links to each other with the output of described PLC control module (8), and described frequency converter (9) is used to receive the control signal that described PLC control module (8) transmits, and according to this control signal control injection machine rotating speed of motor.
2. variable pump injection machine energy-saving and frequency-variable control device as claimed in claim 1 is characterized in that: described data acquisition processing device (1) links to each other with the input able to programme or the pulse input end of described frequency converter (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200935979U CN201220474Y (en) | 2008-04-25 | 2008-04-25 | Variable frequency energy-saving control device of adjustable-discharge pump injection moulding machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200935979U CN201220474Y (en) | 2008-04-25 | 2008-04-25 | Variable frequency energy-saving control device of adjustable-discharge pump injection moulding machine |
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| CN201220474Y true CN201220474Y (en) | 2009-04-15 |
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| CNU2008200935979U Expired - Fee Related CN201220474Y (en) | 2008-04-25 | 2008-04-25 | Variable frequency energy-saving control device of adjustable-discharge pump injection moulding machine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102205612A (en) * | 2011-04-15 | 2011-10-05 | 联塑(杭州)机械有限公司 | Energy-saving improvement method for frequency conversion variable of injection moulding machine |
| CN109966996A (en) * | 2019-02-26 | 2019-07-05 | 武汉恒力华振科技有限公司 | A kind of system using the melting state in big data analysis prediction hot melt adhesive production process |
-
2008
- 2008-04-25 CN CNU2008200935979U patent/CN201220474Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102205612A (en) * | 2011-04-15 | 2011-10-05 | 联塑(杭州)机械有限公司 | Energy-saving improvement method for frequency conversion variable of injection moulding machine |
| CN109966996A (en) * | 2019-02-26 | 2019-07-05 | 武汉恒力华振科技有限公司 | A kind of system using the melting state in big data analysis prediction hot melt adhesive production process |
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