Hydraulic system operation control method and system device for isostatic pressing powder forming

Abstract

The invention discloses a hydraulic system operation control method and a system device for isostatic pressing powder forming. Powder to be formed is poured in a powder cavity of an isostatic pressing machine. Isostatic pressing forming is carried out on powder in the powder cavity through an isostatic pressing forming device in the isostatic pressing machine. An isostatic pressing forming hydraulic operation system in the isostatic pressing machine is controlled in a servo control manner. The rotating speed and torsion of a motor are adjusted in a servo manner to accurately control the position and the pressing speed of a pressing head, the pressure of emulsified liquid in the powder cavity isostatic pressing forming device and time of boosting, pressurizing and pressure releasing. The position and the speed of the pressing head, the pressure of emulsified liquid in the powder cavity and time of boosting, pressurizing and pressure releasing are accurately controlled by adjusting the rotating speed and the torsion of the motor in the servo manner. A control system optimizes operation energy efficiency during operation to the maximum degree according to the operation requirements of various stages, and the method and the system device have the beneficial effects that overflow losses and standby no-load losses are avoided, the hydraulic temperature is low, water cooling is not needed, noise is low, and maintaining cost is low.

Description

technical field [0001] The invention relates to a molding equipment component system and its operation method, in particular to an isostatic pressure hydraulic system and operation method for spark plug ceramic insulator molding and other powder molding; the isostatic hydraulic system and operation method The method can accurately control the position of the pressure head, the pressure of the pressing speed, the pressure of the emulsion in the powder cavity, and the time of boosting the pressure, maintaining the pressure and releasing the pressure. Mainly used in isostatic presses for powder molding. Background technique: [0002] Isostatic pressing is to place the sample to be pressed in a high-pressure container, and use the incompressible properties of the liquid medium and the properties of uniform pressure transmission to uniformly pressurize the sample from all directions. When the liquid medium is injected into the pressure vessel through the pressure pump , accordi...

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Problems solved by technology

[0009] The purpose of the present invention is to solve the problem of low energy efficiency of the hydraulic system (high no-load standby loss and overflow loss) in the existing powder forming isostatic press hydraulic system and working method ), requires forced water cooling, high noise, high failure rate, unstable operating pressure (mechanical pressure regulation, unstable with oil temperature), short service life of hydraulic oil and hydraulic parts, high maintenance and use costs, pressure head cannot be unloaded Due to many shortcomings such as accurate positioning of the billet position, a new powder forming isostatic press hydraulic system and operation method are proposed. The powder forming isostatic press hydraulic system and operation method can effectively solve the current isostatic press hydraulic system and The operation method has low energy efficiency of the hydraulic system (high no-load standby loss and overflow loss), forced water cooling, high noise, high failure rate, unstable operating pressure (mechanical pressure adjustment, unstable with oil temperature), hydraulic oil and The service life of hydraulic parts is short, the cost of maintenance and use is high, and the problem that the pressure head cannot be accurately positioned at the unloading position

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