High-response injection molding machine servo pump cylinder injection system

Abstract

The invention provides a high-response injection molding machine servo pump cylinder injection system. The high-response injection molding machine servo pump cylinder injection system comprises an oiltank, a motor oil pump assembly, a control valve plate, an injection oil cylinder and the like; the motor oil pump assembly is composed of a servo motor, a coupler, a servo pump, a filter and a cooler; the control valve plate is composed of a two-position four-way electromagnetic directional valve, a three-position four-way electromagnetic directional valve, a one-way valve, an overflow valve, apressure gauge, a proportional valve, a two-way quantitative servo pump and the like; the servo motor is connected with the servo pump through the coupler, and high-pressure hydraulic oil enters an oil inlet of the servo pump through the filter from the oil tank; an oil outlet of the servo pump is connected with a P2 port of the control valve plate, a T port of the control valve plate is connectedwith the oil tank through the cooler, and an S port of the control valve plate is connected with the oil tank through the filter; the pressure gauge is installed at a P1 port of the control valve plate; a B2 port of the control valve plate is connected with a left cavity of the injection oil cylinder, and an A1 port of the control valve plate is connected with a right cavity of the injection oilcylinder; and an oil inlet and an oil outlet of an oil motor are connected with a B1 port and a T1 port of the control valve plate respectively.

Description

technical field [0001] The invention belongs to the technical field of injection molding, and in particular relates to a system for driving a hydraulic cylinder by a servo pump of a high-response injection molding machine. Background technique [0002] At present, injection molding machines can be divided into hydraulic injection molding machines and all-electric injection molding machines from the power system, and hydraulic injection molding machines are most widely used with servo pump technology. The principle is that the servo motor drives the oil pump to output according to the instructions of the controller and the load condition. Pressure oil, and the pressure oil is directly transported to the hydraulic cylinder or control element and then to the hydraulic cylinder through a long hydraulic pipeline to realize various actions of the injection molding machine, because it has to go through a long hydraulic pipeline, which will cause pressure along the process Loss and ...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problems of the existing hydraulic injection molding machine injection system in actual industrial production, the response speed is slow, the pipeline is long, and there is pressure loss along the way.

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