Quick pressurizing injection device of hydraulic press

Abstract

The invention discloses a quick pressurizing injection device of a hydraulic press. The quick pressurizing injection device solves technical problems of complicated structure and low response speed of an existing injection device. The quick pressurizing injection device of the hydraulic press comprises an injection cylinder, a pressurizing cylinder and a hydraulic driving mechanism, an injection piston is arranged in the injection cylinder, a pressurizing piston is arranged in the pressurizing cylinder, the injection cylinder and the pressurizing cylinder are integrally molded, an oil inlet channel is arranged in the pressurizing piston, a rodless cavity of the injection cylinder is communicated with a rodless cavity of the pressurizing cylinder via the oil inlet channel, and a one-way control valve for controlling opening or closing of the oil inlet channel is arranged in the oil inlet channel. The quick pressurizing injection device in an embodiment of the invention is mainly used for hydraulic presses and die-casting machines, and die-casting molding of parts such as automobile engines is realized.

Description

technical field [0001] The invention relates to an injection device for a hydraulic press, in particular to a rapid pressurization injection device for a hydraulic press. Background technique [0002] Die-casting is a precision casting method. The dimensional tolerance of the die-casting parts cast by die-casting is very small, and the surface accuracy is very high. In most cases, the die-casting parts can be assembled and applied without turning. Parts can also be cast directly. Small parts such as general camera parts, typewriter parts, electronic computing devices and decorations, as well as complex parts of automobiles, locomotives, airplanes and other vehicles are mostly manufactured by die-casting. For example, in the die-casting process of the motor stator, fast die-casting speed and high die-casting pressure are required. Due to the good thermal conductivity of aluminum, the aluminum has already melted into aluminum water during die-casting, while the silicon steel ...

AI Technical Summary

Problems solved by technology

[0003] The injection system and the pressurization system in the existing injection device are independent and need two sets of control systems to control. Although the control of this injection device can be quite tight, it needs to be Signal reception, signal judgment, selection, command execution, etc., prolong the pressure building and boosting time, and the response speed is slow. The structure is complicated, which brings inconvenience to assembly and maintenance

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