Plastic injection mold with locking mechanism

Abstract

The invention discloses a plastic injection mold with a locking mechanism. The plastic injection mold comprises a base, a fixed mold plate and a movable mold plate. The fixed mold plate is fixedly arranged on the base, hydraulic lifting mechanisms are fixedly arranged at the two ends of the top end of the movable mold plate, and a feeding port is formed in the middle position of the top end of the movable mold plate. Lower locking mechanisms are fixedly arranged on the two sides of the upper end of the fixed mold plate, upper locking mechanisms are arranged on the two sides of the bottom end of the movable mold plate, and an automatic demolding mechanism is arranged on the movable mold plate. According to the plastic injection mold with the locking mechanism, locking and unlocking of the movable mold plate and the fixed mold plate are automatically achieved through temperature changes of plastic melt during injection molding, the structure is simple, operation is convenient, the cost is reduced, after injection molding, the movable mold plate drives a rack to move upwards to enable a winding wheel to rotate, a pull rope can be loosened when the winding wheel rotates, a demolding rod is ejected out under the action of a compression spring after losing the pulling force action of the pull rope, so that the demolding rod ejects out an injection-molded product, and automatic demolding of the injection mold is achieved.

Description

technical field [0001] The invention relates to the technical field of injection molds, in particular to a plastic injection mold with a locking mechanism. 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 two types: thermosetting plastic mold, automobile mold and thermoplastic plastic mold according to the molding characteristics; according to the molding process, it is divided into transfer mold, blow mold, casting mold Plastic mold, thermoforming mold, hot pressing mold (compression plastic mold), injection mold, etc. The hot pressing mold can be divided into th...

AI Technical Summary

Problems solved by technology

[0003] In the process of molding plastic products with an injection mold, when the plastic melt enters the mold cavity through the flow channel, due to the strong injection pressure of the plastic melt, there will be a slight position shift between the movable platen and the fixed platen. For plastic products with high precision requirements, the above-mentioned slight position deviation will seriously affect the product quality, resulting in a low yield rate of injection molded products

Images