The application of PLC in automatic vacuum molding machine

The application of PLC in automatic vacuum molding machine newmaker welcome to e exhibition hall 1 injection molding machine injection molding machine, vertical injection molding machine, second-hand injection molding machine, vacuum forming machine, foam injection molding machine,. 。 。 This paper introduces the PLC application in automatic suction molding machine thick slices, the control core is stable performance, cost-effective FBs series economical host; To achieve good results of your colleague can reduce cost; Cooperate with high ratio of Unicon touch screen to realize the control interface, make simple and intuitive and efficient control. A, quote molding machine ( Also called thermoplastic molding machine) Is to heat the plasticizing of PVC, PE, PP, PET, HIPS, thermoplastic plastic coil made into various shapes of absorption senior decoration box, box packing machine and other products. It is for plastic ( Board) Material, carries on the heating, the use of mould, vacuum or pressure ( Board) Material deformation, meet the requirements of shapes and sizes and with matching process, realize the application purpose. Mainly divided into thin slices of suction molding machine and thick slices which molding machine. Should mainly include plastic packaging industry, food packaging industry, pharmaceutical industry, industrial cooling tower water diversion partition board, automotive materials and health equipment and other manufacturing industries. Some manufacturers still use relay control mode, replaced by PLC controller control, can simplify the circuit, automatic control, is the direction of will. Second, the general scheme of blister machine main structure consists of feeding, pull up and down, the electric heating furnace, brake, the multi-function adjustable size, lower die plate, mold, brake, knife switches on, slicing, slice and match with the vacuum, etc; Is given priority to with pneumatic device power source, its pull piece and piece USES motor, reducer, time relay, intermediate relays, trip switch of electric equipment such as automatic control system. Three, scheme according to the request of the customer points and actual situation, choose MA model and the related switch quantity extension; Inverter control adopts the form of the function of external terminal combination switch control frequency converter speed, realize the different cases of ra/back speed. 1, PLC hardware configuration: : FBs - 32MAR2- ACI / 0 extension module: FBs - 16 xyunicon seven inches below the touch screen: HU070E VFDS - M frequency converter, the flow chart of program design 2:3, part of the program design: 4, touch screen design: all action after putting in place a hot stove into action, the sheet enough to soften the heating time can not go up zipper pulls ahead of time, for follow-up action. Pull piece length through the fixed length and the length of the lap to gauge the pulse number; Feedback on the rotating shaft encoder pulse signal into the PLC high-speed counter, using interrupt count arrived fast response, can be more accurate to pull. Send one revolution of the 600 pulse encoder adopts A B * 4 count method, improving accuracy by 4 times. Breaker pull piece in place at the same time, the part of the automatic slicing, put a piece of work, a simple and efficient. Here due to the variable frequency selection without external power supply, which has been moved to extension module, so we can not adopt IMDIO instruction, immediately stop the inverter when interrupt, one cycle time delay; But has meet the control requirements, so don't apply to host the points on the exchange. Four, application experience of this project for vacuum molding machine marking machine, the action is fixed, pull piece of accuracy is not particularly high, use of frequency converter drive chain pull piece with interrupt control can be very good implementation. PLC is easy to learn programming method to the customer has brought great convenience to use and maintenance debugging; Line with economic host brings customers stable perfect functions, and cost-effective, have a competitive edge.
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