In-mold hot cutting control system and control method

Abstract

The in-mold hot cutting control system comprises a cutter module and a controller, the cutter module comprises a cutter, an oil cylinder and a die cutting auxiliary machine, the controller comprises a solid-state relay, a protection relay and a frequency converter, the output end of the solid-state relay is connected with the protection relay, and the frequency converter receives signals of the protection relay and controls the cutter module to rotate. The frequency converter controls the die cutting auxiliary machine to work, and then the oil cylinder and the cutter are pushed to move synchronously through the high-pressure oil way. After pressure maintaining of plastic in the die cavity is completed, the injection molding machine sends an electric signal to the solid-state relay, the solid-state relay outputs voltage to the protection relay, the protection relay transmits a generated I / O signal to the frequency converter, the frequency converter drives the die cutting auxiliary machine to move, and the high-pressure oil way pushes the oil cylinder to move so that the cutter can cut off material heads of products. According to the invention, the in-mold cutting process without time parameters and any time sequence control is realized.

Description

technical field [0001] The invention relates to the technical field of pneumatic control elements, in particular to an in-mold eager cutting control system and a control method. Background technique [0002] As one of the cutting-edge technologies in the current international injection mold industry, in-die-cutting injection molds are equipped with punches in the mold. The current in-die cutting is the direct contact between the movable die punch and the fixed die core to complete the punching action to realize the separation of the cold rubber channel and the product. The punch of the movable die is driven by a hydraulic cylinder, and the signal comes from the mold closing and triggering the travel switch after high pressure. Then count down (injection time + pressure holding time + margin fluctuation time, margin toggle time includes T1-cutter delay time, T2-cutter push-in time, T3-cutter continuous push-in time and T4-cutter push-in time Backward time), after the T1 coun...

AI Technical Summary

Problems solved by technology

Because the communication adopts the touch-triggered countdown method, there will be delays in the action and the cold rubber channel cannot be cut flat; or the punching action in advance will cause the failure to complete the pressure holding and feeding, and the product will have sink marks or cut continuously. defect

In particular, it is impossible to complete the in-die cutting of engineering plastics with high hardness and high content of glass fiber. Because of high hardness engineering materials ((PC / ABS+GF10, PA+GF20), engineering plastics with 70% PC and high content), the material freezing time Extremely short, if the knife is slightly delayed, there will be a problem of continuous cutting. If the knife is moved in advance, it will cause the feeding to be unable to be completed in a short time, resulting in the appearance of sink marks

The current die-cutting technology cannot store the punching time corresponding to different materials and different molds. It is completely necessary for the operator to adjust the different parameter settings each time and enter the process parameters manually against the on-site paper, which leads to errors and missing parameters. problems, resulting in batch accidents in multiple productions, and there is no error-proofing function at all

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