CN203580060U - Injection molding machine servo energy-saving control system - Google Patents
Injection molding machine servo energy-saving control system Download PDFInfo
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- CN203580060U CN203580060U CN201320820372.XU CN201320820372U CN203580060U CN 203580060 U CN203580060 U CN 203580060U CN 201320820372 U CN201320820372 U CN 201320820372U CN 203580060 U CN203580060 U CN 203580060U
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- control system
- injection molding
- servo motor
- servo
- alternating current
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Abstract
The utility model discloses an injection molding machine servo energy-saving control system, comprising an alternating current servo motor, an alternating current servo motor driver, a hydraulic gear pump, a pressure sensor, a revolution speed sensor, an input filter and a signal conversion board, wherein the signal conversion board converts the pressure and flow signals of the numerical control system of the injection molding machine and sends to the alternating current servo motor driver, the alternating current servo motor driver drives the alternating current servo motor, the alternating current servo motor is connected with the hydraulic gear pump, the pressure sensor is mounted on the oil outlet pipe of the hydraulic gear pump, the revolution speed sensor is mounted on the output shaft of the alternating current servo motor, and the output end of the filter is connected with the input end of the alternating current servo motor driver. According to the injection molding machine servo energy-saving control system, a closed loop feedback control system is adopted, the problem that the full hydraulic injection molding machine wastes electric energy caused by the idle of the motor is solved, the electric energy utilization ratio of the injection molding machine is greatly improved, the stability of the injection molding process is increased, and the service life of the injection molding machine is prolonged; the control system is simple in structure and convenient to implement.
Description
Technical field
The utility model relates to injection machine energy-saving technical field, especially relates to the control system of the energy-saving servo transformation of full hydraulic injection machine, is mainly used in the energy-saving servo transformation of old injection machine, to improve the power saving rate of injection machine.
Background technology
There is the problem of high energy consumption in traditional Injection Industry, have a strong impact on the competitiveness of enterprise always.At present.The injection machine major part of domestic production and use is common full hydraulic injection machine, there is sizable waste in its energy consumption, in order to improve injection machine energy utilization rate, reduce production costs to strengthen the competitiveness of injection moulding enterprise, the call of response energy-saving and emission-reduction, for the control system energy-conserving control technology of injection machine, successively having experienced constant displacement pump PQ controls, hydraulic variable displacement pump control, energy-saving and frequency-variable control etc., although these renovation techniques have improved the power saving rate of hydraulic system to a certain extent, but energy-saving effect is but very limited, and exist shortcomings: the motor idle running situation under (1) constant displacement pump control system is serious, control system waste of energy is up to 60%～70%, there is throttling loss, leakage loss in overflow loss and oil pump, in production, oil temperature is higher, noise is larger, (2) idle running of the motor under hydraulic variable flow pump control system situation is serious, and power saving rate improves limited, has throttling loss, and owing to adopting variable pump to cause hydraulic system to increase hydraulic oil quality requirements, (3) under energy saving control system of frequency conversion in use, the controllability of low speed low pressure is poor, and flow pressure response exists certain hysteresis to cause injection moulding productivity ratio to reduce, and has leakage loss and a small amount of overflow loss in oil pump simultaneously.
Utility model content
For above shortcomings in prior art, the injection machine performance indications such as the rapidity of good controllability, flow pressure response when realizing low-temperature-rise, low noise, the low speed low pressure of high power saving rate, hydraulic oil of hydraulic control system, the utility model provides a kind of energy-saving servo control system for injection molding.
In order to solve the problems of the technologies described above, the utility model has adopted following technical scheme:
A kind of energy-saving servo control system for injection molding, comprise AC servo motor, AC servo machinery driving device, hydraulic gear pump, pressure sensor, speed probe, input filter and signal transducer, described signal transducer is by the pressure of injection machine digital control system and flow signal conversion input AC motor servo driver, described AC servo machinery driving device connects and drives AC servo motor, described AC servo motor connects hydraulic gear pump, described pressure sensor is arranged on hydraulic gear pump flowline, described speed probe is arranged on AC servo motor, described input filter is installed between AC servo machinery driving device power input and power supply.As a kind of preferred version of the present utility model, described signal transducer is connected between motor servo driver and injection machine digital control system, and the analog current signal of 0～1A that the pressure given that signal transducer is exported injection machine digital control system and flow are given converts the analog voltage signal of 0～10VDC to and delivers in AC servo machinery driving device.
Technical conceive of the present utility model is: the difference requiring according to Shooting Technique, pressure and flow (being pressure and the rotating speed of the oil-out of hydraulic pump) that each action phase needs are also different, especially at injection moulding cooling stage, the idle running of full hydraulic injection machine motor makes the whole overflow losses of hydraulic oil, causes energy waste.When injection machine is worked, described servo energy-saving control system detects pressure and the flow signal that injection machine digital control system is sent in real time, and adjust in real time each operating mode and move rotating speed and the torque of required servomotor, allow the flow of hydraulic gear pump and pressure just meet the demand of system.
The beneficial effects of the utility model are: compared with prior art, adopt this control system to eliminate motor idle running phenomenon, eliminated overflow loss and throttling loss, through actual motion test, the average power saving rate of its motor reaches 30%～80%.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of energy-saving servo control system for injection molding.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
As shown in Figure 1, a kind of energy-saving servo control system for injection molding, comprises AC servo motor, AC servo machinery driving device, hydraulic gear pump, pressure sensor, speed probe, input filter and signal transducer.Signal transducer is connected with injection machine digital control system, receive pressure simulation current signal and the flow simulation current signal of 0 given～1A of injection machine digital control system, and processing is converted to the analog voltage signal of 0～10VDC, directly be added in the input of the given signal of the given signal and systems flow of system pressure of AC servo machinery driving device, make AC servo machinery driving device with certain rotating speed and the work of torque actuated AC servo motor, AC servo motor connects by shaft coupling and drives hydraulic gear pump to realize fuel feeding, install speed probe and realize the real-time detection to system works flow at AC servo motor output shaft place, the oil-out setting pressure sensor of hydraulic gear pump is realized the real-time detection to system works pressure.Speed probe and pressure sensor detect the flow signal that obtains and pressure signal and are linked into the feedback signal port of AC servo driver and the given flow signal of injection machine digital control system and pressure signal and compare respectively and calculate and carry out PI adjusting, change output speed and the torque of AC servo motor, thereby change the actual output flow Qt of hydraulic gear pump and the actual pressure P of hydraulic oil, formed closed-loop feedback control system, input filter is connected between motor servo driver and power supply, to suppress the Conduction Interference of power supply.
Finally explanation is, above embodiment is only unrestricted in order to the technical solution of the utility model to be described, although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement the technical solution of the utility model, and not departing from aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of claim scope of the present utility model.
Claims (2)
1. an energy-saving servo control system for injection molding, it is characterized in that, comprise AC servo motor, AC servo machinery driving device, hydraulic gear pump, pressure sensor, speed probe, input filter and signal transducer, described signal transducer is by the pressure of injection machine digital control system and flow signal conversion input AC motor servo driver, described AC servo machinery driving device connects and drives AC servo motor, described AC servo motor connects hydraulic gear pump, described pressure sensor is arranged on hydraulic gear pump flowline, described speed probe is arranged on AC servo motor, described input filter is installed between AC servo machinery driving device power input and power supply.
2. a kind of energy-saving servo control system for injection molding according to claim 1, it is characterized in that: described signal transducer is connected between motor servo driver and injection machine digital control system, the analog current signal of 0～1A that the pressure given that signal transducer is exported injection machine digital control system and flow are given converts the analog voltage signal of 0～10VDC to and delivers in AC servo machinery driving device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320820372.XU CN203580060U (en) | 2013-12-13 | 2013-12-13 | Injection molding machine servo energy-saving control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320820372.XU CN203580060U (en) | 2013-12-13 | 2013-12-13 | Injection molding machine servo energy-saving control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203580060U true CN203580060U (en) | 2014-05-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320820372.XU Expired - Fee Related CN203580060U (en) | 2013-12-13 | 2013-12-13 | Injection molding machine servo energy-saving control system |
Country Status (1)
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| CN (1) | CN203580060U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN106382278A (en) * | 2016-10-08 | 2017-02-08 | 广州智光节能有限公司 | Hydraulic system control method and device |
| CN108342836A (en) * | 2018-05-09 | 2018-07-31 | 武文豹 | A kind of non-woven fabrics hot-rolling mill hydraulic control system |
-
2013
- 2013-12-13 CN CN201320820372.XU patent/CN203580060U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN106382278A (en) * | 2016-10-08 | 2017-02-08 | 广州智光节能有限公司 | Hydraulic system control method and device |
| CN106382278B (en) * | 2016-10-08 | 2018-02-16 | 广州智光节能有限公司 | A kind of control method and device of hydraulic system |
| CN108342836A (en) * | 2018-05-09 | 2018-07-31 | 武文豹 | A kind of non-woven fabrics hot-rolling mill hydraulic control system |
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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: 20140507 Termination date: 20161213 |
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| CF01 | Termination of patent right due to non-payment of annual fee |