A hydraulic system for press-fitting equipment

Abstract

A hydraulic system of a press fitting device comprises a press fitting loop, a supporting loop and a pump source, wherein the press fitting loop and the supporting loop are connected between an oil outlet branch and an oil return branch of the pump source. According to the hydraulic system of the press fitting device, a constant-voltage variable plunger pump serves as the pump source, once the pressure of the whole hydraulic system reaches pressure needed by working, the inclination of a tilting tray is changed automatically through the constant-voltage variable plunger pump, and flow is changed to be zero, so that overflowing losses are avoided. Electromagnetism throttling valves are overlaid on the press fitting loop; when a press fitting solenoid directional valve is charged and the press fitting electromagnetism throttling valves are charged, a press fitting cylinder adjusts the descending speed of the press fitting cylinder through the double one-way electromagnetism throttling valves; when the press fitting solenoid directional valve loses power, the press fitting cylinder adjusts the press fitting speed through the press fitting electromagnetism throttling valves. The descending speed and the press fitting speed of a press fitting device in the prior art are the same, and by means of the hydraulic system of the press fitting device, the descending speed and the press fitting speed are set respectively to be adjusted.

Description

technical field [0001] The invention belongs to the technical field of hydraulic equipment, and relates to a hydraulic system of press-fitting equipment. Background technique [0002] At present, the hydraulic system of the press-fitting equipment used in domestic automobile assembly lines can only set one press-fitting speed during the press-fitting process, and if the speed is set too fast, it will have a great impact on the press-fitted products, and if the speed is set too slow, it will cause serious damage. It will reduce the production efficiency of the whole production line. In addition, hydraulically controlled one-way valves or electromagnets are generally used to keep the pressure of the support cylinder in the hydraulic system. If the hydraulically controlled one-way valve leaks, the pressure cannot be maintained for a long time. The electromagnet is prone to heat and not energy-saving when it is charged for a long time. Contents of the invention [0003] The p...

AI Technical Summary

Problems solved by technology

[0002] At present, the hydraulic system of the press-fitting equipment used in domestic automobile assembly lines can only set one press-fitting speed during the press-fitting process, and if the speed is set too fast, it will have a great impact on the press-fitted products, and if the speed is set too slow, it will cause serious damage. Will reduce the production efficiency of the entire production line

In addition, hydraulically controlled one-way valves or electromagnets are generally used to keep the pressure of the support cylinder in the hydraulic system. If the hydraulically controlled one-way valve leaks, the pressure cannot be maintained for a long time. The electromagnet is prone to heat and not energy-saving when it is charged for a long time.

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