Separated double-layer mold core, core pulling assembly thereof and mold of separated type double-layer mold core

Abstract

The invention relates to a separated double-layer mold core. The mold core comprises an inner mold core and an outer mold core, the outer mold core comprises a sleeve arranged on the inner mold core in a sleeve mode and vane plates fixed to the end face of the sleeve, and the vane plates are distributed around the axis of the sleeve in a circular mode. The invention further relates to a core pulling assembly for the separated double-layer mold core, the core pulling assembly comprises an inner mold core pulling sliding block, an outer mold core pulling sliding block and guide sliding rails, wherein the inner mold core pulling sliding block is fixedly connected to the inner mold core and is slidably connected to the outer mold core pulling sliding block; the outer mold core pulling sliding block is fixedly connected to the outer mold core and is connected to the guide sliding rails in a sliding manner; the guide sliding rails are arranged along the advancing and retreating direction of the mold core; and a sliding direction of the inner mold core pulling sliding block on the outer mold core pulling sliding block is consistent with the sliding direction of the outer mold core pulling sliding block on the guide slide rails. The invention further relates to a mold for the separated double-layer mold core. The mold comprises the separated double-layer mold core, an upper mold plate, a lower mold plate, an interface module and a core pulling assembly. The mold core has the effect that core pulling is convenient.

Description

technical field [0001] The present application relates to the technical field of injection molds, in particular to a separate double-layer mold core, a core-pulling assembly and a mold thereof. Background technique [0002] At present, precision plastic pipes are mainly processed by injection molding through injection molds. Injection molds generally include an upper template, a lower template and a mold core. The upper template and the lower template form an external cavity, and the mold core in the external cavity cooperates with the external cavity to form a molding cavity for a plastic tube. During injection molding, hot melt plastic is first injected into the molding cavity. After the plastic pipe is cooled and formed, the mold core is pulled out from the side, and then the upper and lower templates are opened up and down to take out the plastic pipe fittings. [0003] In the injection molding process of plastic pipes, because there are two layers of inner and outer pi...

AI Technical Summary

Problems solved by technology

[0005] In view of the related technologies mentioned above, the inventors found the following defects: after the tee pipe 1 is cooled and formed, it is relatively easy to pull the core of the branch pipe core 21, but the blades 2222 of the main pipe core 22 are located between the inner wall 122 and the outer wall 121 of the main joint 12. Under the clamping action of the main joint 12, the inner wall 122 of the main joint 12 is under the clamping action of the inner mold core 221 and the leaf plate 2222, and the outer wall 121 of the main joint 12 is under the holding action of the leaf plate 2222 and the external cavity, and the multiple clamping action The core-pulling resistance is relatively large, and core-pulling failures often occur

Images