Motion control device and method for multiple paths of high-vacuum valves of die-casting mold

Abstract

The invention discloses a motion control device for multiple paths of high-vacuum valves of a die-casting mold. The die-casting mold is connected with a vacuum machine through three vacuum valves andvacuum tubes of corresponding branches. The three vacuum valves are connected with the same independent neutron hydraulic system through hydraulic oil paths of the corresponding branches. The independent neutron hydraulic system provides the oil pressure to close or open the three vacuum valves. Oil supply of the independent neutron hydraulic system and opening and closing of the three vacuum valves are controlled in a centralized mode through a die-casting machine control system. According to the motion control device and method for the multiple paths of high-vacuum valves of the die-castingmold, the structure of equipment can be greatly simplified, the production preparation time is shortened, and the production efficiency is improved. The invention further provides a motion control method for the multiple paths of high-vacuum valves of the die-casting mold. By adoption of the motion control method for the multiple paths of high-vacuum valves of the die-casting mold, the response process of the vacuum valves can be shortened, the degree of vacuum in a mold cavity is greatly improved, and the product quality and stability are improved.

Description

technical field [0001] The invention belongs to the field of die-casting vacuum technology, and in particular relates to a multi-channel high-vacuum valve action control device and control method for a die-casting mold. Background technique [0002] In order to realize the smooth extraction of the air in the cavity of the die-casting mold during the process of filling the cavity with aluminum material, a hydraulically driven valve needs to be installed at the exhaust end of the mold. After the aluminum material filling starts, the valve is opened and the air is pumped out; before the aluminum material filling is completed, the valve is closed to prevent the aluminum material from splashing and blocking the suction channel. [0003] Such as figure 1 As shown, in the Chinese patent CN201810287498, a control device for high vacuum valve of die-casting mold is disclosed. Road connection, and an air bag accumulator is also connected to the manifold to shorten the response time ...

AI Technical Summary

Problems solved by technology

[0004] This kind of vacuum valve control device for die-casting molds can only control one vacuum valve circuit, and cannot achieve higher-required multi-circuit vacuum control. Moreover, it is necessary to reinstall the connecting oil circuit manifold and Connecting related signals greatly affects production efficiency

Moreover, the PCL of the die-casting machine does not directly control the solenoid valve of the integrated block, but relays it through a relay, which will delay the reaction time of the vacuum valve.

[0005] The high vacuum requirements of die-casting molds are getting higher and higher, and the current single-channel vacuum control device can no longer meet the requirements; the current vacuum control oil circuit needs to be disassembled frequently, which affects production efficiency; the control oil circuit and control device are designed separately, which affects the response of the vacuum valve time

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