Anti-deformation lateral core pulling injection mold

Abstract

The invention provides a deformation-preventive lateral core-pulling injection molding die. The deformation-preventive lateral core-pulling injection molding die comprises a sliding block, wherein a cylindrical side mold core is arranged at one side, facing a mold cavity, of the sliding block; a sliding hole is formed in the side ring surface of the side mold core, and a telescoping part is glidingly assembled into the sliding hole; an exhausting groove is formed in the telescoping part; limiting plates are arranged at the end parts of the outer side and the inner side of the telescoping part;a returning spring is arranged between the limiting plate at the inner side and the inner side surface of the side mold core; and an exhausting hole is formed in the sliding block. The deformation-preventive lateral core-pulling injection molding die is a device having the characteristics that an injection molding part can be subjected to telescoping compensation so as to avoid cracking caused byinner stress; in addition, the injection molding die can be separated from the injection molding part during die releasing, so that the side mold core and the injection molding part can be preventedfrom friction and damage.

Description

technical field [0001] The invention relates to the field of injection molds, in particular to a side core-pulling injection mold. Background technique [0002] Injection mold is a common mold for injection molding of plastic parts, through which various forms of plastic parts can be formed. When the injection molded part has holes or bumps in a direction different from the demoulding direction, a side core-pulling mechanism is required to use the side core-pulling mechanism to eject the molded product from the side during the mold opening process. Action to achieve the purpose of forming structures such as holes or grooves on plastic parts. When the mold is cooled and formed, the mold needs to be cooled, and the side core pulling mechanism also needs to be cooled accordingly. Since the side core is inside the mold cavity, the side core and the injection molding material will appear during demoulding. The phenomenon of friction deformation occurs due to excessive friction ...

AI Technical Summary

Problems solved by technology

When the mold is cooled and formed, the mold needs to be cooled, and the side core pulling mechanism also needs to be cooled accordingly. Since the side core is inside the mold cavity, the side core and the injection molding material will appear during demoulding. The phenomenon of friction deformation occurs due to excessive friction force, resulting in damage to injection molded parts

In addition, when the side core cools down, because it is inside the mold cavity, the cooling speed is slow, so it will prolong the time required for the entire injection molding, which is not conducive to improving the injection molding efficiency

In addition, the existing injection molds will shrink the material during cooling and molding, and this phenomenon will lead to cracking of the material due to internal stress, and the existing side core-pulling injection molds have no way to solve such problems

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