External thread core pulling mold of injection molded protective cover and mold core thread machining method

Abstract

The invention discloses an external thread core pulling mold of an injection molded protective cover. The external thread core pulling mold of the injection molded protective cover comprises a fixed mold assembly, a movable mold assembly, inner molds, a mold core and a lateral core pulling mechanism. The mold core comprises a threaded mold core bodies and thin sheet mold core bodies. The threadedmold core bodies extend inwards from the two sides of the inner molds. The thin sheet mold core bodies extend inwards from the two sides of the inner mold bodies. The side core pulling mechanism comprises sliding blocks and inclined guide columns. The inclined guide columns are matched with the sliding blocks in a sliding manner. In the mold opening and closing process, the inclined guide columnsare in linkage with the sliding blocks to move, the sliding blocks drive the mold core to move, and the core pulling action is completed. It is achieved that on the same sliding block mechanism, corepulling of the fine and thin buckle station of the product is achieved, and external thread demolding of the middle column station of the product is also achieved. The invention further provides a thread machining method of the thread mold core. Electrodes are used for machining the threads. The multiple electrodes are turned and milled with one procedure in a unified manner. The datums and initial positions of the rough machining electrodes and the fine machining electrodes are unified, and thread ghosting and dislocation are avoided.

Description

technical field [0001] The invention relates to the technical field of plastic moulds, in particular to an external thread core-pulling mold of an injection protective cover and a thread processing method for the core. Background technique [0002] An injection-molded protective cover is assembled on the KOMO tube of the automobile air-conditioning condenser to play a sealing role. There is high pressure in the tube, so the size requirements for the protective cover are relatively high; the traditional design is processed according to one out of one or at most one out of two, because the product To play the role of sealing and positioning, it is always difficult to guarantee the coaxiality between the outer circle of the thread and the maximum outer circle of the product. The design of the water transportation of the mold is limited, and the thin slices on the row position are often deformed and broken, which cannot reach the state of mass production; the mold structure for f...

AI Technical Summary

Problems solved by technology

[0002] An injection-molded protective cover is assembled on the KOMO tube of the automobile air-conditioning condenser to play a sealing role. There is high pressure in the tube, so the size requirements for the protective cover are relatively high; the traditional design is processed according to one out of one or at most one out of two, because the product To play the role of sealing and positioning, it is always difficult to guarantee the coaxiality between the outer circle of the thread and the maximum outer circle of the product. The design of the water transportation of the mold is limited, and the thin slices on the row position are often deformed and broken, which cannot reach the state of mass production; the mold structure for forced thread removal Unable to meet the requirements of product use, the threads need to be processed later, which affects the production efficiency and low efficiency; the starting positions of the threads of the two products of one out of two cannot be unified, resulting in inconsistent positions of the two parts after assembly

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