A Die Clamping Mechanism with Internal Circulation and Two Plates for Easy Debugging

Abstract

The invention discloses a conveniently-debugged inner-loop dual-plate clamping mechanism which is composed of a movable mould plate, a fixed mould plate, a mode-locked oil cylinder, a transfer-molded oil cylinder, an ejection oil cylinder and a switch valve mounted on the fixed mould plate. The mode-locked oil cylinder is an inner-loop oil cylinder which is composed of a back-up ring, a spring, a mode-locked slide valve, a mode-locked piston, a mode-locked rear-end nut, a pull bar, a cylinder tube and the like. As the switch valve is installed at the oil-way position of the fixed mould plate, pressure of a hydraulic system can be monitored by opening and closing the switch valve when an injection machine breaks down. Then, an oil cylinder which breaks down can be detected without detaching the clamping mechanism. Breakdown detection is rapid, and debugging can be carried out by the same method. Thus, debugging process is also simple. As mechanical breakdown of the inner-loop dual-plate clamping mechanism always occurs to the mode-locked oil cylinder, opening and closing of the switch valve can be utilized to detect breakdown of the clamping mechanism so as to solve most mechanical breakdown problems.

Description

technical field [0001] The invention relates to a two-plate mold clamping mechanism of an injection molding machine, in particular to an internal circulation two-plate mold clamping mechanism which is convenient for debugging. Background technique [0002] Many existing hydraulic injection molding machines already use a two-plate clamping mechanism. According to Professor Wang Xingtian's patent CN200520145200, the inner circulation two-platen injection molding machine has been produced. The internal circulation two-platen injection molding machine has some advantages such as high precision, fast mold moving speed, stable performance, energy saving, and low noise. However, for the clamping mechanism of the internal circulation two-platen injection molding machine, the internal structure of the clamping oil cylinder is relatively complicated, and it is prone to failure during the long-term production process. Since the four clamping cylinders share one oil port and the cylin...

AI Technical Summary

Problems solved by technology

However, for the clamping mechanism of the internal circulation two-platen injection molding machine, the internal structure of the clamping cylinder is relatively complicated, and it is prone to failure during the long-term production process

Since the four clamping cylinders share one oil port and the cylinders are connected internally, when a fault occurs, it is impossible to judge which one or which cylinders have the problem, so it is necessary to overhaul the four clamping cylinders one by one, which is cumbersome

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