Commutator plastic sleeve separation mold

Abstract

The invention discloses a plastic sleeve separation die of a reverser. The separation die comprises a movable upper die and a fixed lower die, and is characterized in that an ejection pin is arranged at the bottom of the movable upper die; the diameter of the ejection pin head is smaller than the diameter of an inner hole of the plastic sleeve; the fixed lower die comprises an upper pad and a lower pad which are fixedly connected; an upper through hole through which a combined body of the reverser and the plastic sleeve can penetrate is formed in the upper pad; the diameter of the upper through hole is greater than the excircle diameter of the plastic sleeve; a lower through hole through which the reverser can penetrate independently is formed in the lower pad; the diameter of the lower through hole is greater than that of the excircle of the reverser and is smaller than that of the excircle of the plastic sleeve. The plastic sleeve separation die is specially used for separating the reverser and the plastic sleeve after injection molding; the efficiency is improved; the labor intensity is alleviated; meanwhile, the most important is that the reutilization of the plastic sleeve is realized.

Description

Technical field [0001] The invention relates to a mold, in particular to a mold dedicated to separating a commutator from a plastic sleeve after injection molding. Background technique [0002] In the manufacturing process of the commutator, usually one piece of independent copper commutator is punched first, and then the commutator copper pieces are arranged in the plastic sleeve, and then the commutator pieces and the plastic sleeve are placed together. The commutator injection mold is combined with bakelite powder or other matrix materials for injection molding. The commutator after injection is firmly combined with the plastic sleeve. The current method is to use a cutter to cut the outer circle of the plastic sleeve. Then it is peeled from the outer surface of the commutator to complete the separation of the commutator and the plastic sleeve. The efficiency is low, the labor intensity is high, and the most important plastic sleeve is destroyed and cannot be reused. Summary ...

AI Technical Summary

Problems solved by technology

[0002] In the production process of the commutator, it is usually first to punch a piece of independent commutator copper sheet, then arrange the commutator copper sheet in the plastic sleeve, and then put the commutator segment and the plastic sleeve together The commutator is injection molded together with bakelite powder or other matrix materials in the injection mold. The injection molded commutator is firmly combined with the plastic sleeve. The current method is to use a cutter to cut the outer circle of the plastic sleeve. Then it is peeled off from the outer surface of the commutator to complete the separation of the commutator and the plastic sleeve. The efficiency is low, the labor intensity is high, and the most important plastic sleeve is damaged and cannot be reused.

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