Injection mold protective device

Abstract

The invention discloses an injection mold protective device. The injection mold protective device comprises an upper mold and a lower mold; an injection molding device is fixed to the upper end of theupper module; an upper mold groove is formed in the lower end of the upper module; the top of the upper mold groove is provided with a first through hole corresponding to the injection molding device; fixing grooves are formed in the two sides of the upper mold groove, limiting grooves are formed in the opposite side walls in the fixing grooves, first polished rods are fixed in the two limiting grooves, and limiting plates are arranged on the first polished rods in a penetrating mode. By means of the injection mold protective device, the reset speed of a bottom needle plate is decreased, thestrength of impact between the bottom needle plate and a movable mold seat plate is reduced, the problem that in the prior art, after a mold is pushed out, the bottom needle plate frequently collideswith the movable mold seat bottom plate and consequently the movable mold seat bottom plate and the bottom needle plate are prone to being damaged is solved, unnecessary losses are reduced, enterpriseprofits are improved, and the injection mold protective device is simple in structure, convenient to operate and suitable for being popularized.

Description

technical field [0001] The invention relates to the technical field of injection mold protection, in particular to a protection device for injection molds. Background technique [0002] Injection molding is a tool for producing plastic products; it is also a tool for giving plastic products a complete structure and precise dimensions. Injection molding is a processing method used in mass production of certain complex-shaped parts. The injection molding machine is injected into the mold cavity under high pressure, and after cooling and solidification, the molded product is obtained. The injection mold is divided into thermosetting plastic mold and thermoplastic plastic mold according to the molding characteristics; according to the molding process, it is divided into transfer mold, blow mold, and cast mold. , thermoforming mold, hot compression mold (compression mold), injection mold, etc. The hot compression mold can be divided into three types: overflow type, semi overflow ...

AI Technical Summary

Problems solved by technology

Among them, the pouring system and molding parts are the parts that are in direct contact with the plastic and change with the plastic and the product. They are the most complex and changing parts in the mold, requiring the highest processing finish and precision. But now after the mold is pushed out, the bottom pin When the plate returns to its position, it often collides with the bottom plate of the movable mold base, which is easy to damage the movable mold base plate and the bottom needle plate, causing losses and affecting the benefits of the enterprise. For this reason, we propose a protective device for injection molds to solve the problem. above question

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