Hydraulic top ram control system of internal mixer
A control system and technology for internal mixers, applied in the field of internal mixers, can solve the problems of many external wiring, cumbersome debugging, low precision, etc., and achieve the effects of less external wiring, reducing failure rate and saving money.
Active Publication Date: 2010-10-13
大连橡胶塑料机械有限公司
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Problems solved by technology
The original hydraulic jacking bolt is composed of PLC, flow setting board, P / Q control board, amplifier board, servo valve and sensor. It is cumbersome to debug and there are many external wiring. Low
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[0015] Below in conjunction with accompanying drawing, the present invention is described in further detail:
[0016] Such as figure 1 , 2 The hydraulic upper bolt control system of the internal mixer shown is mainly composed of hydraulic station 1, proportional servo valve 2, chamber B with rod and chamber A without rod. The weight 4 is connected with the connecting rod 5, the weight can be adjusted through the program calculation and interlocking up and down speed and the pressure can be adjusted steplessly, the pressure feedback value detected by the sensor is input into the controller PLC, and the controller controls the flow and pressure , through the digital-to-analog conversion module to output control signals to the servo valve to control the opening of the servo valve so that its pressure remains constant during the rubber mixing process.
[0017] The control process of the controller is as follows: the feedback quantities of the two sensors are connected to the PL...
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The invention relates to an internal mixer, in particular to an internal mixer hydraulic top bolt control system which mainly consists of a hydraulic station, a proportion servo valve, a rod B chamber and a non-rod A chamber; the A chamber and the B chamber are respectively provided with a sensor; the feedback quantity of the pressure detected by the sensor is input to a PLC which controls the flux and the pressure; the control signal is output to the servo valve by an D / A conversion module; the opening quantity of the servo valve is controlled and the pressure of the servo valve keeps unchangeable during the rubber mixing process. The control system of the invention is simple; the control to two variables: flux control and pressure control, is realized in the PLC by the program. When thegiven pressure is more than the practical value or the setting switch of the pressure control circuit is open, the pressure control has no effect. When a pressing roll runs to the bottom, the pressure control has the effect; the given pressure is compared with the feedback signal of the sensor in the PLC, the pressure output value is controlled by adjusting the PID, the capital is saved, the failure rate of the hydraulic top bolt is reduced, and the debugging is simple and convenient.
Description
1. Technical field: [0001] The invention relates to an internal mixer, in particular to a control system for its top bolt. 2. Background technology: [0002] At present, hydraulic internal mixers used for rubber mixing in the rubber (plastic) industry are becoming more and more popular. The original hydraulic jacking bolt is composed of PLC, flow setting board, P / Q control board, amplifier board, servo valve and sensor. It is cumbersome to debug and there are many external wiring. Low. 3. Contents of the invention: [0003] The object of the present invention is to overcome the above-mentioned disadvantages and provide a control system for the hydraulic upper bolt of the internal mixer, which is controlled by an electric device, the system is simple, the operation is convenient, and the cost is low. [0004] The technical scheme adopted by the present invention to achieve the above purpose is: the hydraulic upper bolt control system of the internal mixer, which is mainly...
Claims
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IPC IPC(8): B29B7/28B29B7/72
Inventor 刘天华刘昱正张星任延昂张宇
Owner 大连橡胶塑料机械有限公司