CN202480353U - Energy-saving control system of injection molding machine - Google Patents
Energy-saving control system of injection molding machine Download PDFInfo
- Publication number
- CN202480353U CN202480353U CN2012201318770U CN201220131877U CN202480353U CN 202480353 U CN202480353 U CN 202480353U CN 2012201318770 U CN2012201318770 U CN 2012201318770U CN 201220131877 U CN201220131877 U CN 201220131877U CN 202480353 U CN202480353 U CN 202480353U
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- Prior art keywords
- hydraulic oil
- oil pump
- energy
- control
- control system
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- Expired - Fee Related
Links
- 238000001746 injection moulding Methods 0.000 title abstract description 4
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 22
- 238000002347 injection Methods 0.000 claims description 22
- 239000007924 injection Substances 0.000 claims description 22
- 239000000523 sample Substances 0.000 claims description 8
- 238000005516 engineering process Methods 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- 238000004134 energy conservation Methods 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000002828 fuel tank Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000003502 gasoline Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000004663 powder metallurgy Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
Landscapes
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model discloses an energy-saving control system of an injection molding machine. The energy-saving control system comprises a PQ (power quality) control card, a motor driver, a servo motor, a hydraulic oil pump and a pressure sensor, wherein the PQ control card is connected with the motor driver which is connected with and drives the servo motor, the servo motor is connected with the hydraulic oil pump, and the pressure sensor is connected between the hydraulic oil pump and the PQ control card. In the embodiment of the utility model, a closed-loop control system is adopted, and the pressure of the hydraulic oil pump can be fed back to the PQ control card timely, so that accurate control can be realized, and the high pressure throttling can be eliminated thoroughly by using a gear pump.
Description
Technical field
The utility model relates to the electron controls technology field, is specifically related to injection machine energy-saving control system.
Background technology
The synthetic high polymer plastic material has obtained using widely since coming out; Replacing part iron; Pottery, every field such as powder metallurgy and industry have all shown great vitality, therefore; Also always within people's research range, Plastics Injection Molding Technology is a kind of application technology very widely to the forming technique of relevant plastic material.Injection machine has successively experienced manual control, constant displacement pump PQ control, variable pump control; Frequency conversion open loop flow-control, these technology are being dominated the injection machine hydraulic control system always, still; Without exception, there is very big defective in these systems, wherein; Highly energy-consuming is to be difficult to the problem that overcomes all the time, also is people when improving injection machine system, considers maximum problems.Therefore, people are always in that to attempt to seek injection machine quick, and are accurately energy-conservation, the good type control system that cost is rational.
At present; Traditional injection machine motor drives and uses constant displacement pump or variable pump; The hydraulic part of Constant Pump System adopts asynchronous motor gasoline pump system; The motor drives oil pump is exported from fuel tank oil suction and pressurization, through pressure, flow and the direction of various control valves control oil, moves by desired direction with certain power (or moment of torsion) and certain speed to guarantee operating mechanism.Thereby realize each process of injection moulding.When needs changed load flow and pressure, fuel pump speed was non-adjustable, uses valve regulated usually for tradition constant displacement pump injection machine, and unnecessary oil enters fuel tank through overflow valve, significant amount of energy with the form loss of pressure differential on valve.
The utility model content
The utility model provides a kind of injection machine energy-saving to control system, can address the above problem, and realizes the Energy Saving Control to hydraulic oil pump.
The utility model provides a kind of injection machine energy-saving to control system; Comprise: PQ control card, motor driver, servomotor, hydraulic oil pump and pressure sensor; Wherein, the PQ control card connects motor driver, and motor driver connects and the driving servomotor; Servomotor connects hydraulic oil pump, and pressure sensor is connected between hydraulic oil pump and the PQ control card.
Preferably, the hydraulic oil pump of said injection machine energy-saving control system is a gear pump.
Preferably, said injection machine energy-saving is controlled system and is also comprised speed probe, and said speed probe is connected between servomotor and the PQ control card.
Technique scheme can be found out, because the utility model embodiment adopts closed-loop control system, in time gives the PQ control card with the pressure feedback of hydraulic oil pump, therefore can realize accurate control, and use gear pump can thoroughly eliminate the high pressure throttling.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiment of the utility model, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structured flowchart of injection machine energy-saving control system among the utility model embodiment.
The specific embodiment
To combine the accompanying drawing among the utility model embodiment below, the technical scheme among the utility model embodiment is carried out clear, intactly description, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making all other embodiment that obtained under the creative work prerequisite, all belong to the scope of the utility model protection.
Embodiment:
The utility model embodiment provides a kind of injection machine energy-saving to control system, and is as shown in Figure 1, PQ control card, motor driver, servomotor, hydraulic oil pump and pressure sensor; Wherein, The PQ control card connects motor driver, and motor driver connects and drives servomotor, and servomotor connects hydraulic oil pump; Pressure sensor is connected between hydraulic oil pump and the PQ control card, and pressure sensor is transmitted back to the PQ control card with the hydraulic pressure signal of hydraulic oil pump.Hydraulic oil pump is a gear pump among the utility model embodiment.In order to guarantee the accurate control of The whole control system, the utility model embodiment also comprises speed probe, and said speed probe is connected between servomotor and the PQ control card, and said speed probe feeds back to the PQ control card with the tach signal of servomotor.
Particularly, the PQ control card is connected with the PC computer in control procedure, the flow value and the force value of the hydraulic oil pump work that receiving computer is set, and this flow value and force value also can directly be stored in the PQ control card.The PQ control card converts flow value and force value; And be transferred to motor driver with the form of control signal, and make motor driver with certain rotating speed and the work of torque drive servomotor, the gear of the output shaft driving gear pump of servomotor rotates; Thereby realize the normal operation of gear pump; In order to realize monitoring to the gear pump gear rotating speed, on the output shaft of servomotor, speed probe is installed, monitor the gear rotational speed of gear pump in real time; Because the operating pressure of injection machine needs accurately control; And the operating pressure of injection machine is reacted by the hydraulic pressure of gear pump, therefore at the oil-out place of gear pump pressure sensor is installed, and the working hydraulic pressure of gear pump is monitored in real time.Above-mentioned two sensors in time feeds back to the PQ control card with tach signal and hydraulic pressure signal, and the PQ control card calculates through inner comparison, in time the control signal of electromechanical transducer is made adjustment, and realizes accurate FEEDBACK CONTROL.
After using electrohydraulic servo system; Motor driver is with servomotor, to closed-loop control of pressure signal formation of injection machine, simultaneously because servomotor has the characteristics of rapid starting/stopping; Can within 30 milliseconds, start or stop; Therefore in pressurize, in the stages such as cooling, servomotor does not almost have power consumption.Because the pressure exported of energy-saving servo system, flow can closed-loop controls, so its pressure repeatable accuracy is good, and also can reliable work under low-pressure.The flow that the energy-saving servo system is exported is controlled by data signal, and good linearity and low speed controllability are arranged, and the repeatable accuracy of its flow is also higher.
The injection machine energy-saving control system of the utility model embodiment has the following advantages with respect to existing control system for shot machine:
Fractional energy savings is high: thoroughly eliminate the high pressure throttling, than the energy-conservation 30%-60% of constant displacement pump, than the energy-conservation 10%-30% of variable pump;
Response speed is fast: ascending, descending speed time≤0.1 second, and pressure changes can reach 30ms the soonest, enhances productivity;
Control is accurate: the PQ control card is strengthened the disturbance rejection ability through the PID adjustment to flow system flow, pressure, makes system's repeatable accuracy in 0.3%, improves quality of item greatly, and goods are accurate;
The high overload ability is strong: moment overload magnification >=200% of servomotor;
State conversion is flexibly: speed, Torque Control are flexible, switch level and smooth;
Reduce hydraulic oil temperature: the consumption that reduces cooling water is more than 30%, certain occasion even do not need water-cooled fully;
Prolong service life of equipment: alleviate out, locked mode impacts, and prolongs hydraulic oil pump, plant equipment and die life;
Improve working environment: reduce noise, generally speaking, sound is no more than 68db during action.
More than injection machine energy-saving control system that the utility model embodiment is provided carried out detailed introduction; Used concrete example among this paper the principle and the embodiment of the utility model are set forth, the explanation of above embodiment just is used to help to understand the core concept of the utility model; Simultaneously, for one of ordinary skill in the art, according to the thought of the utility model, the part that on the specific embodiment and range of application, all can change, in sum, this description should not be construed as the restriction to the utility model.
Claims (3)
1. injection machine energy-saving is controlled system; It is characterized in that, comprising: PQ control card, motor driver, servomotor, hydraulic oil pump and pressure sensor, wherein; The PQ control card connects motor driver; Motor driver connects and drives servomotor, and servomotor connects hydraulic oil pump, and pressure sensor is connected between hydraulic oil pump and the PQ control card.
2. injection machine energy-saving as claimed in claim 1 is controlled system, and it is characterized in that: said hydraulic oil pump is a gear pump.
3. according to claim 1 or claim 2 injection machine energy-saving control system, it is characterized in that: also comprise speed probe, said speed probe is connected between servomotor and the PQ control card.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201318770U CN202480353U (en) | 2012-03-30 | 2012-03-30 | Energy-saving control system of injection molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201318770U CN202480353U (en) | 2012-03-30 | 2012-03-30 | Energy-saving control system of injection molding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202480353U true CN202480353U (en) | 2012-10-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201318770U Expired - Fee Related CN202480353U (en) | 2012-03-30 | 2012-03-30 | Energy-saving control system of injection molding machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202480353U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102975345A (en) * | 2012-12-01 | 2013-03-20 | 揭阳市顺嘉利塑胶实业有限公司 | Power-saving control process for hot-working and forming of plastic |
| CN103057073A (en) * | 2012-12-28 | 2013-04-24 | 柳州市欧科塑胶机械成套设备有限公司 | Plastic injection molding machine |
| CN105642865A (en) * | 2014-08-08 | 2016-06-08 | 重庆市恒牛机械制造有限公司 | Synchronous liquid-cooling servo energy-saving method of die-casting machine |
-
2012
- 2012-03-30 CN CN2012201318770U patent/CN202480353U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102975345A (en) * | 2012-12-01 | 2013-03-20 | 揭阳市顺嘉利塑胶实业有限公司 | Power-saving control process for hot-working and forming of plastic |
| CN103057073A (en) * | 2012-12-28 | 2013-04-24 | 柳州市欧科塑胶机械成套设备有限公司 | Plastic injection molding machine |
| CN105642865A (en) * | 2014-08-08 | 2016-06-08 | 重庆市恒牛机械制造有限公司 | Synchronous liquid-cooling servo energy-saving method of die-casting machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121010 Termination date: 20160330 |
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| CF01 | Termination of patent right due to non-payment of annual fee |