Injection mold moving and stationary mold bidirectional helical demolding mechanism

Abstract

The invention discloses an injection mold moving and stationary die bidirectional spiral demolding mechanism, which comprises a rotary mold core (1), a spiral groove lead hole (2), a spiral rail guide pole (3), a follow-up rotary crown pillar (4) and a die cavity (5). The invention adopts the technical scheme as follows: the rotary mold core (1) is arranged on a stationary die; the spiral groove lead hole (2) and the follow-up rotary crown pillar (4) are arranged on a moving die; and an injection molding machine is utilized to open a mold and push out to demold, so as to screw out a large-lead internal and external threaded injection molding product. The invention overcomes the problems and the disadvantages in the prior art of high construction cost of mold of the same type, high production power consumption, low efficiency. The injection mold moving and stationary die bidirectional spiral demolding mechanism enables the large-lead internal and external threaded injection molding product to be spirally demolded, thereby achieving the purposes of reducing mold cost and improving production efficiency.

Description

Injection mold movable and fixed mold two-way spiral demoulding mechanism technical field The invention relates to a demoulding mechanism of an injection mold, specifically refers to the internal mechanism of the movable and fixed mould, which is applied in the injection molding mold of a plastic product with a large lead internal and external thread, using the process of mold opening and ejection of the plastic machine. Two-way rotation, a kind of injection mold movable and fixed mold two-way spiral demoulding mechanism to realize automatic spiral demoulding of plastic products. Background technique For the demoulding of threaded injection molded products with high requirements, spiral demoulding must be adopted. The spiral demoulding mechanism of the injection mold in the prior art is mainly divided into a rack and pinion method, a motor method, and an insert method. The rack and pinion method is to use the process of mold opening and ejection of the plastic machine to ...

AI Technical Summary

Problems solved by technology

The aforementioned rack-and-pinion and motor-based injection molds are bulky and expensive compared to the products; for large-lead internal and external threaded plastic products, a high-speed ratio reduction device needs to be added to the demoulding mechanism, so that the mold’s The cost is even higher; while the insert method requires more auxiliary labor, the work intensity is high, and the production efficiency is low.

To sum up, the existing technology has problems and deficiencies such as high mold cost and high cost, or low efficiency of production labor

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