Three-linkage synthesis core-pulling device of injection mould

Abstract

The invention discloses a three-linkage synthesis core-pulling device of an injection mould. The three-linkage synthesis core-pulling device comprises a big sliding block (1), a small sliding block (2), a lower sliding block (3), a separation and reunion pin (4) and an oil cylinder (5), wherein the big sliding block is provided with a pipe cavity, a small sliding groove and a pin groove; the small sliding block is provided with a pipe core, an inclined sliding rail and an upper separation and reunion groove, and the inclined sliding rail is provided with a limiting step; the lower sliding block is provided with a limiting rod; a movable mould support plate is provided with a lower separation and reunion groove; the big sliding block is arranged on the movable mould support plate in a sliding way; the small sliding block is arranged in the small sliding groove in a sliding way; a cylinder body of the oil cylinder is fixedly connected with the movable mould support plate; a piston rod of the oil cylinder is fixedly connected with the small sliding block; the separation and reunion pin is arranged in the pin groove of the big sliding block; when the mould is closed, the lower end of the separation and reunion pin is clamped in the lower separation and reunion groove; when the mould works, the small sliding block is driven by the oil cylinder to enable core-puling to be firstly carried out on the pipe core and the lower sliding block; when the separation and reunion pin is inserted into the upper separation and reunion groove, the big sliding block is connected with the small sliding block, so that core-pulling is carried out on the pipe cavity; therefore, injection mould provided with a plurality of pulling cores at the narrow position achieves the aims of simplifying the structure, reducing the body form, lowering the cost and eliminating failure.

Description

technical field [0001] The invention relates to a core-pulling and demoulding device for an injection mold, in particular to an injection mold used for automobile air-collecting pipe products, which pulls and demoulds three different core-pulling blocks from the reverse buckle structure of the pipe interface of the product A three-link synthetic core-pulling device for an injection mold. Background technique [0002] Injection molds that need to set multiple different core-pulling blocks in a narrow location and perform core-pulling and demoulding. The existing technology uses multiple oil cylinders to drive the respective core-pulling blocks in sequence to perform core-pulling and demoulding. The cost is high, and the internal space of the mold is occupied, which leads to an increase in the shape of the mold, a complex structure, and a further increase in the cost of the mold; in addition, the control of the working order of multiple oil cylinders is strict, and the mold wi...

AI Technical Summary

Problems solved by technology

[0002] Injection molds that need to set multiple different core-pulling blocks in a narrow location and perform core-pulling and demoulding. The existing technology uses multiple oil cylinders to drive the respective core-pulling blocks in sequence to perform core-pulling and demoulding. The cost is high, and the internal space of the mold is occupied, which leads to an increase in the shape of the mold, a complex structure, and a further increase in the cost of the mold; in addition, the control of the working order of multiple oil cylinders is strict, and the mold will be damaged if there is a slight error; therefore, the existing technology has Problems and shortcomings of complex structure, large shape, high cost, and prone to failure

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