Double-shot molding system and double-shot molding forming process

Abstract

The invention discloses a double-shot molding system and a double-shot molding forming process. The double-shot molding system comprises a moving die and a fixed die, the fixed die is arranged on theright side of the moving die, and a first injection machine and a second injection machine are separately arranged at the top and the right side of the fixed die in a communicating mode. A first hydraulic cylinder is installed on the left side wall of the moving die, a moving block is arranged in an inner cavity of the moving die, a piston rod of the first hydraulic cylinder penetrates through themoving die and fixedly connected with the moving block, third hydraulic cylinders are installed on the upper and lower surfaces of the moving die, the outer ends of piston rods of the third hydrauliccylinders are connected with one end of a second hinge pin, and the other end of the second hinge pin penetrates through the moving die and is connected to the surface of a limiting column in an inserting mode. The limiting action of the limiting column and a first hinge pin enables the first hydraulic cylinder to drive the moving block to be stable in position when the moving block is under theimpact of injection, no change is achieved, the injection molding effect is not affected, the first hydraulic cylinder is further protected, the first hydraulic cylinder is prevented from being damaged under the impact, and the double-shot molding system and the double-shot molding forming process are suitable for wide popularization and use.

Description

Technical field [0001] The invention relates to a molding process, specifically a two-color injection molding system and a two-color injection molding process. Background technique [0002] In the process of two-color injection molding of existing two-color injection molding equipment, there are many factors that affect the effect of injection molding. Among them, the impact force is greater when the injection is performed. If the movable mold and the fixed mold are connected during the injection process Failure to tighten will affect the results of injection molding, and there are many types of two-color injection molding. In the two-color injection molding method that adjusts the injection cavity through a hydraulic cylinder, the hydraulic cylinder is susceptible to impact and affects its service life. Therefore, we propose a two-color injection molding system and two-color injection molding process. Summary of the invention [0003] The purpose of the present invention is to p...

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Problems solved by technology

[0002] During the two-color injection molding process of the existing two-color injection molding equipment, there will be many factors affecting the injection molding effect. Among them, the impact force is relatively large when the material is injected. If the movable mold and the fixed mold are connected during the injection process If it is not fastened, it will affect the injection molding result, and there are many types of two-color injection molding. Among them, the two-color injection molding method that adjusts the inner cavity of the injection molding through the hydraulic cylinder. When the impact force is large, the hydraulic cylinder is vulnerable to impact, which affects its service life.

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