CN209794431U

CN209794431U - Injection molding die of circuit breaker base

Info

Publication number: CN209794431U
Application number: CN201920694907.0U
Authority: CN
Inventors: 胡金战; 黄存华; 方明敏; 王全圣; 叶超磊
Original assignee: Zhejiang Ever Electric Appliance Co Ltd
Current assignee: Zhejiang Ever Electric Appliance Co Ltd
Priority date: 2019-05-15
Filing date: 2019-05-15
Publication date: 2019-12-17
Anticipated expiration: 2029-05-15

Abstract

The utility model relates to a circuit breaker base's injection moulding mould, which comprises a die body, this internal mounting hole department that corresponds the base of mould be provided with the mould core, the mould core on be provided with the copper insert, the lower extreme setting of mould core on the mould body, the upper end of mould core alternate in the copper insert, and the opening part that corresponds the copper insert on the mould core is provided with circular step, the copper insert in be provided with circular step matched with circular recess, circular step block just constitutes the joint cooperation of copper insert and mould core in the circular recess. The utility model has the advantages of simple structure, high production efficiency and being beneficial to reducing the labor intensity of workers.

Description

Injection molding die of circuit breaker base

Technical Field

The utility model relates to a circuit breaker technical field, concretely relates to injection molding mould of circuit breaker base.

Background

The molded case circuit breaker can automatically cut off the current after the current exceeds the trip setting. Plastic housing refers to the use of plastic insulators as the outer housing of the device to isolate the conductors from each other and from the grounded metal parts. The base and the shell of the existing molded case circuit breaker are both manufactured by adopting an injection molding process. When the base of the circuit breaker is pressed by using an injection molding die, an insert nut is usually pressed inside the base for mounting the base and the housing. After insert nut was put on the mould core usually, because the extrusion of raw materials, part raw materials can be followed the gap between insert nut and the core and get into insert nut's screw thread, behind the circuit breaker base drawing of patterns, can have a lot of wastes materials on the screw thread of the insert nut of base, influence the installation of screw, must attack with assorted screw tap, clear away the waste material, so, when meetting the part that inserts quantity, specification are more, need attack each insert nut, cause the problem that production efficiency is low. Therefore, the pressure injection molding die has the defects of low production efficiency and high labor intensity of workers.

Disclosure of Invention

An object of the utility model is to overcome prior art's defect, provide a simple structure, production efficiency height, be favorable to alleviateing workman intensity of labour's circuit breaker base's injection moulding mould.

For realizing the above-mentioned purpose, the utility model discloses a circuit breaker base's injection moulding mould, which comprises a die body, this internal mounting hole department that corresponds the base of mould be provided with the mould core, the mould core on be provided with the copper inserts, the lower extreme setting of mould core on the mould body, the upper end of mould core alternate in the copper inserts, and the opening part that corresponds the copper inserts on the mould core is provided with circular step, the copper inserts in be provided with circular step matched with circular slot, circular step block just constitutes the joint cooperation of copper inserts and mould core in the circular slot.

The beneficial effect of above-mentioned structure does: the die core matched with the copper insert is arranged on the die body and is inserted into the copper insert, when the base is pressed, raw materials can be effectively prevented from entering the copper insert, the copper insert is prevented from being blocked by the raw materials, the production efficiency of the pressure injection forming die is improved, workers do not need to clear waste materials for the copper insert, the labor intensity of the workers is reduced, and the pressure injection forming die has the advantages of being simple in structure, high in production efficiency and beneficial to reducing the labor intensity of the workers.

In particular, the circular steps are in contact with the circular groove surface and form interference fit connection between the copper insert and the mold core. The circular steps can prevent raw materials from entering the copper insert along the die core, and the working reliability of the injection molding die is improved.

Drawings

Fig. 1 is an exploded view of an embodiment of the present invention.

Figure 2 is the utility model discloses an assembly drawing of mould core and copper inserts.

Detailed Description

As shown in fig. 1-2, the embodiment of the utility model provides a circuit breaker base's injection molding mould, including mould body 10, mould body 10 in the mounting hole department that corresponds base 20 be provided with mould core 11, mould core 11 on be provided with copper insert 12, the lower extreme setting of mould core 11 on mould body 10, the upper end of mould core 11 alternate in copper insert 12, and the opening part that corresponds copper insert 12 on the mould core 11 is provided with circular step 111, copper insert 12 in be provided with circular step 111 matched with circular groove, circular step 111 block just constitutes the joint cooperation of copper insert 12 and mould core 11 in circular groove. The circular step 111 contacts with the circular groove surface and forms interference fit connection of the copper insert 12 and the mold core 11. The circular steps can prevent raw materials from entering the copper insert along the die core, and the working reliability of the injection molding die is improved.

The die core matched with the copper insert is arranged on the die body and is inserted into the copper insert, when the base is pressed, raw materials can be effectively prevented from entering the copper insert, the copper insert is prevented from being blocked by the raw materials, the production efficiency of the pressure injection forming die is improved, workers do not need to clear waste materials for the copper insert, the labor intensity of the workers is reduced, and the pressure injection forming die has the advantages of being simple in structure, high in production efficiency and beneficial to reducing the labor intensity of the workers.

Claims

1. The utility model provides a circuit breaker base's injection moulding mould, includes the mould body, its characterized in that: the die comprises a die body, a die core is arranged at a position, corresponding to a mounting hole of a base, in the die body, a copper insert is arranged on the die core, the lower end of the die core is arranged on the die body, the upper end of the die core is inserted into the copper insert, a circular step is arranged at an opening of the die core, corresponding to the copper insert, and is provided with a circular groove matched with the circular step, and the circular step is clamped in the circular groove and forms clamping fit of the copper insert and the die core.

2. The injection molding die for a circuit breaker base as claimed in claim 1, wherein: the round steps are in contact with the round groove surface and form interference fit connection between the copper insert and the mold core.