An automatic pressure relief system that is convenient for quick connector extraction and insertion

Abstract

The invention discloses an automatic pressure relief system that is convenient for quick joint extraction and insertion, comprising a first hydraulic valve and a second hydraulic valve, the working oil inlet A of the first hydraulic valve is connected with one end of the first oil inlet pipe, and the second hydraulic valve The other end of an oil inlet pipe is connected to one end of the first hydraulic cylinder, the working oil return port B of the first hydraulic valve is connected to one end of the first oil return pipe, and the other end of the first oil return pipe is connected to the other end of the first hydraulic cylinder , the first oil inlet pipe and the first oil return pipe are equipped with first quick connectors, the main oil return port T of the first hydraulic valve is connected to the first main oil return pipe, when the first quick connector and the second quick connector need to be pulled out , the high-pressure oil in the first oil inlet pipe and the second oil inlet pipe is delivered to the pressure relief oil tank through the pressure relief valve to realize the oil pressure relief work of the first oil inlet pipe and the second oil inlet pipe, which is convenient to realize The pull-out work of the first quick connector and the second quick connector.

Description

technical field [0001] The invention relates to the field of hydraulic equipment, in particular to an automatic pressure relief system that facilitates the extraction and insertion of quick joints. Background technique [0002] At present, plastic sheets are widely used, such as ABS or HIPS sheets used in refrigerator blister molding equipment or automotive interior molding equipment. During the processing of plastic sheets, hydraulic equipment is required. [0003] During the use of existing hydraulic equipment, when the first quick connector and the second quick connector need to be pulled out, due to the high oil pressure in the first oil inlet pipe and the second oil inlet pipe, the pressure cannot be released. When plugging and unplugging, the force on the joint is too large, which makes plugging and unplugging extremely difficult and affects work efficiency. [0004] The Chinese patent with the publication number CN205159763U discloses a device for intelligent automat...

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Problems solved by technology

[0005] The purpose of the present invention is to provide an automatic pressure relief system that is convenient for the quick connector to be plugged in, so as to solve the problem of the first oil inlet pipe when the first quick connector and the second quick connector need to be pulled out during the use of the existing hydraulic equipment. And the oil pressure in the second oil inlet pipe is too high to release the pressure. When the quick connector is inserted and removed, the joint is subjected to excessive force, which makes the insertion and removal extremely difficult and affects the work efficiency.

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