Ejection mechanism for die-casting moulds without marks of ejector rods

Abstract

An ejection mechanism for die-casting moulds without marks of ejector rods comprises a movable mould (1), a movable mould base (2), a pushing plate (3), a pushing plate ejecting column (4) and an ejecting plate (5), wherein the movable mould base (2) is inlaid in the movable mould (1); the pushing plate (3) is positioned in the movable mould base (2); the ejecting plate (5) is slidably connected with the movable mould (1); one end of the pushing plate ejecting column (4) is connected with the pushing plate (3); the other end of the pushing plate ejecting column (4) is fixedly connected with the ejecting plate (5) through the movable mould (1) and the movable mould base (2); a secondary ejecting plate (6) for ejecting cinder ladles outwards is arranged between the ejecting plate (5) and the movable mould (1); an ejector pin (7) is arranged on the secondary ejecting plate (6); one end of the ejector pin (7) is fixed on the secondary ejecting plate (6); and the end surface of the other end of the ejector pin (7) is flush with a mould cavity wall corresponding to a cinder ladle on the pushing plate (3) through the movable mould (1), the movable mould base (2) and the pushing plate (3). Compared with the prior art, the ejection mechanism has the advantages of high ejection efficiency, high yield, short production period and low production cost.

Description

technical field [0001] The invention belongs to the field of die-casting molds, in particular to an ejection mechanism for a die-casting mold without a mark of an ejector pin. Background technique [0002] At present, among all kinds of die castings, there is a type with a relatively large area and relatively regular shape. The surface of these castings is not allowed to have ejection marks, and the castings are required to meet the assembly requirements without processing. The ejection mechanism of the die-casting mold in the prior art all uses the movable push plate to eject the casting, but when the movable push plate is ejected, the slag bag, the runner and the casting are pushed out at the same time, so that the slag bag, the runner and the casting are still embedded in the In the push plate, the worker needs to operate manually to disengage from the push plate, but this operation requires high operation, otherwise the casting is prone to slag pockets or grooves on the ...

AI Technical Summary

Problems solved by technology

The ejection mechanism of the die-casting mold in the prior art all uses the movable push plate to eject the casting, but the slag bag, the runner and the casting are pushed out at the same time when the movable push plate is ejected, so that the slag bag, the runner and the casting are still embedded in the In the push plate, the worker needs to operate manually to disengage from the push plate, but this operation requires high operation, otherwise the casting is prone to slag pockets or grooves on the casting after the sprue breaks during disengagement , which leads to the scrapping of castings; or it is easy to produce marks on castings, which leads to scrapping of castings

Therefore, the ejection mechanism of the die-casting mold in the prior art without the ejector pin mark has the problems of low ejection efficiency, low yield rate, long production cycle and high production cost.

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