Upper jacking system with multi-station jacking function

Abstract

The invention provides an upper jacking system with a multi-station jacking function. The upper jacking system comprises a hydraulic cylinder body mounted in a center hole of a sliding block, an upperoil inflow pipeline, a lower oil inflow pipeline, a piston, a piston rod, a flange plate, a check disc mounted on the flange plate through a flange plate countersunk bolt, a base, check disc countersunk bolts, a guide sleeve mounted in a stepped hole in the center of the base, a concave guide column located in the guide sleeve, matched with the guide sleeve and mounted at the end of the piston rod through horizontally-arranged connecting pins, a jacking bottom disc mounted on the end face of the tail end of the concave guide column through jacking bottom disc countersunk bolts and multiple jacking rods mounted on the jacking bottom disc through threaded connection. The upper jacking system is large in jacking force, rapid in action response, high in production efficiency, simple in transmission chain, high in jacking precision, flexible in operation, suitable for automatic production, high in production efficiency, long in service life, high in anti-unbalance-loading capacity and suitable for multi-station forging occasions, and can be widely used for a screw press and especially applied to a large screw press.

Description

technical field [0001] The invention relates to a multi-station ejecting and jacking system, which can be widely used in screw presses, especially in large-scale screw presses. Background technique [0002] Die ejector is one of the special devices for ejecting materials in die forging production, especially for large die forging machines, it is one of the indispensable auxiliary devices. Because most die forgings with concave cavities will stick in the upper die during forging, if the die forgings cannot be taken out in time, the production efficiency will be reduced and the performance of die forgings will be affected. At present, the jacking device of the die forging machine generally adopts a mechanical cam-type jacking device. The principle is: through the left and right swing of the connecting rod, the cam is driven to rotate to realize the downward movement of the jacking beam, and to drive the jacking rod downward. Movement, so as to realize the ejection of the forg...

AI Technical Summary

Problems solved by technology

[0003] One is that during long-term use, due to the constant friction between the cam and the jacking beam, the cam and the jacking beam are worn, which greatly reduces the precision of the jacking, and even cannot realize the jacking function

This may cause stuffy car or damage the mold, which increases the cost and reduces the production efficiency

The second is that the structure of the mechanical lifting device is complex and the processing cost is high

The third is that the structure is a combined device. The ejector part of the upper mold cavity is composed of the ejector plate and the ejector rod through bolts or interference fit. The connection part of the mold cavity is prone to insufficient strength.

This structure is prone to unloading or insufficient air compressor pressure, resulting in low production efficiency

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