CN218196740U

CN218196740U - Injection molding die

Info

Publication number: CN218196740U
Application number: CN202221840758.2U
Authority: CN
Inventors: 施炳飞; 王晓庆; 杨通文; 郑浩鹏; 邓汉军; 王振华
Original assignee: Wenzhou Jintong Complete Set Electrical Appliances Co ltd
Current assignee: Wenzhou Jintong Complete Set Electrical Appliances Co ltd
Priority date: 2022-07-14
Filing date: 2022-07-14
Publication date: 2023-01-03
Anticipated expiration: 2032-07-14

Abstract

The utility model relates to an injection moulding mould, including base, thimble assembly, lower mould backup plate, mold core fixed plate, mold core, quiet mould bucket fixed plate, quiet mould bucket, hot plate, heat insulating board, last backup plate, mold core and quiet mould bucket between be formed with circuit breaker base model chamber, the middle part of quiet mould bucket on be provided with respectively with first notes material hole, the second notes material hole that is linked together in circuit breaker base model chamber, quiet mould bucket on be provided with the notes material runner of connection between first notes material hole and second notes material hole, last backup plate on be provided with solid fixed ring, be provided with the pouring basin in the solid fixed ring, the one end of pouring basin pass heat insulating board, hot plate in proper order and extend in first notes material hole. The utility model has the advantages of simple structure, stable performance are reliable, production efficiency is high, can effectively improve circuit breaker base intensity.

Description

Injection molding die

Technical Field

The utility model relates to an injection moulding mould, concretely relates to injection moulding mould for low voltage circuit breaker working of plastics.

Background

At present, in the technical field of low-voltage circuit breakers, a circuit breaker shell is an important component of the low-voltage circuit breaker, the circuit breaker shell is usually molded by using an unsaturated resin material DMC/BMC/SMC product, and the DMC/BMC/SMC product obtained by adopting the molding forming has excellent mechanical property, heat resistance and chemical corrosion resistance. However, the existing compression molding die for the circuit breaker base is unreasonable in structural design, too much in product edge overflow, too large in labor intensity of workers and very high in physical requirement of the workers. In order to realize the artificial intelligence of production, the machine replaces the manual purpose of tradition, and current circuit breaker working of plastics adopts injection moulding technology to make, but, the position setting of the notes material of current injection moulding mould is unreasonable, and the middle part of circuit breaker base produces the fusion mark easily, can not satisfy the strength properties requirement of circuit breaker base. And the injection molding die also has the defects of complex structure, low production efficiency and unreliable performance.

Disclosure of Invention

An object of the utility model is to overcome prior art's defect, provide a simple structure, stable performance is reliable, production efficiency is high, can effectively improve the injection moulding mould of circuit breaker base intensity.

In order to achieve the above object, the utility model discloses an injection molding die, including base, activity setting thimble assembly in the base, set up lower mould backup plate on the base, set up mold core fixed plate on lower mould backup plate, set up mold core in the mold core fixed plate, set up quiet mould bucket fixed plate on lower mould backup plate, set up in quiet mould bucket fixed plate and with mold core matched with quiet mould bucket, set up hot plate on quiet mould bucket fixed plate, set up heat insulating board on the hot plate, set up the last mould backup plate on the heat insulating board, mold core and quiet mould bucket between be formed with circuit breaker base model chamber, the middle part of quiet mould bucket on be provided with respectively with first notes material hole, the second notes material hole that are linked together with circuit breaker base model chamber, quiet mould bucket on be provided with the notes material runner of connection between first notes material hole and second notes material hole, last mould backup plate on be provided with solid fixed ring, be provided with the runner cup in the solid fixed ring, the one end of runner cup pass heat insulating board, the hot plate in proper order and extend in first notes material hole.

The beneficial effect of above-mentioned structure is: the middle part of the static mold barrel is respectively provided with a first material injection hole and a second material injection hole which are communicated with the mold cavity of the circuit breaker base, and the first material injection hole and the second material injection hole are arranged in the middle part of the mold cavity of the circuit breaker base, so that the middle part of the circuit breaker base is not easy to generate fusion marks, and the strength performance requirement of the circuit breaker base can be met. Therefore, the injection molding die has the advantages of simple structure, stable and reliable performance, high production efficiency and capability of effectively improving the strength of the circuit breaker base.

Particularly, the thimble assembly include the thimble board, set up thimble backup plate on the thimble board, link a plurality of thimbles that set up on the thimble backup plate respectively, the one end of a plurality of thimbles along with the action of thimble backup plate and extensible in circuit breaker base model cavity. When the mold is opened, the ejector pins act along with the ejector pin backup plates, and the ejector pins can push the molded circuit breaker base out of the circuit breaker base mold cavity, so that automatic demolding can be realized, and the production efficiency of the injection molding mold can be improved.

Particularly, a locking block is arranged on one side of the fixed plate of the static mold barrel, a locking hole is formed in one end of the locking block, and a locking bolt matched with the locking hole is arranged on the lower mold backup plate. When the mold is closed, the locking hole can be locked on the locking bolt, so that the injection molding mold can be ensured to be reliably closed, and the working reliability is higher.

Particularly, a heat insulation base plate is arranged between the base and the lower die backup plate. The heat insulation base plate can play a role in heat insulation, and is favorable for improving the working reliability of the injection molding die.

Drawings

Fig. 1 is a perspective view of an embodiment of the present invention.

Fig. 2 is an exploded view of an embodiment of the present invention.

Fig. 3 is a sectional view of the embodiment of the present invention.

Detailed Description

As shown in fig. 1-3, an embodiment of the present invention is an injection molding mold, including a base 10, a thimble assembly 20 movably disposed in the base 10, a lower backup plate 11 disposed on the base 10, a mold core fixing plate 12 disposed on the lower backup plate 11, a mold core 13 disposed in the mold core fixing plate 12, a stationary mold barrel fixing plate 14 disposed on the lower backup plate 11, a stationary mold barrel 15 disposed in the stationary mold barrel fixing plate 14 and matched with the mold core 13, a heating plate 16 disposed on the stationary mold barrel fixing plate 14, a heat insulation plate 17 disposed on the heating plate 16, and an upper backup plate 18 disposed on the heat insulation plate 17, wherein a circuit breaker base mold cavity 100 is formed between the mold core 13 and the stationary mold barrel 15, a first material injection hole 151 and a second material injection hole 152 communicated with the circuit breaker base mold cavity 100 are disposed in the middle of the stationary mold barrel 15, a first material injection channel 151 and a second material injection hole 152 are disposed in the stationary mold barrel 15, a first material injection hole 191 and a first material cup 191, a first material cup 19 extending in the stationary mold barrel 17. A locking block 30 is arranged on one side of the fixed plate 14 of the fixed die barrel, a locking hole 301 is arranged at one end of the locking block 30, and a locking bolt 31 matched with the locking hole 301 is arranged on the lower die backup plate 11. When the mold is closed, the locking hole can be locked on the locking bolt, so that the injection molding mold can be ensured to be reliably closed, and the working reliability is higher. A heat insulation backing plate 32 is arranged between the base 10 and the lower backing plate 11. The heat insulation backing plate can play a role in heat insulation, and is favorable for improving the working reliability of the injection molding die.

As shown in fig. 2 and 3, the thimble assembly 20 includes a thimble plate 21, a thimble rest plate 22 disposed on the thimble plate 21, and a plurality of thimbles 23 respectively disposed on the thimble rest plate 22 in a linkage manner, wherein one end of each of the plurality of thimbles 23 moves along with the thimble rest plate 22 and can extend into the circuit breaker base model cavity 100. When the mold is opened, the ejector pin acts along with the ejector pin backup plate, and the ejector pin can push the molded circuit breaker base out of the circuit breaker base mold cavity, so that automatic demolding can be realized, and the production efficiency of the injection molding mold can be improved. The middle part of the static mold barrel is respectively provided with a first material injection hole and a second material injection hole which are communicated with the mold cavity of the circuit breaker base, and the first material injection hole and the second material injection hole are arranged in the middle part of the mold cavity of the circuit breaker base, so that the middle part of the circuit breaker base is not easy to generate fusion marks, and the strength performance requirement of the circuit breaker base can be met. Therefore, the injection molding die has the advantages of simple structure, stable and reliable performance, high production efficiency and capability of effectively improving the strength of the circuit breaker base.

Claims

1. An injection molding die, characterized in that: the device comprises a base, a thimble assembly movably arranged in the base, a lower die backup plate arranged on the base, a die core fixing plate arranged on the lower die backup plate, a die core arranged in the die core fixing plate, a static die barrel fixing plate arranged on the lower die backup plate, a static die barrel arranged in the static die barrel fixing plate and matched with the die core, a heating plate arranged on the static die barrel fixing plate, a heat insulation plate arranged on the heating plate, and an upper die backup plate arranged on the heat insulation plate, wherein a circuit breaker base model cavity is formed between the die core and the static die barrel, a first material injection hole and a second material injection hole which are communicated with the circuit breaker base model cavity are respectively arranged at the middle part of the static die barrel, the static die barrel is provided with a material injection flow channel connected between the first material injection hole and the second material injection hole, the upper die backup plate is provided with a fixing ring, a sprue cup is arranged in the fixing ring, and one end of the sprue cup sequentially penetrates through the heat insulation plate and the heating plate and extends into the first material injection hole.

2. The injection molding mold of claim 1, wherein: the thimble assembly comprises an ejector pin plate, an ejector pin backup plate arranged on the ejector pin plate, and a plurality of ejector pins respectively arranged on the ejector pin backup plate in a linkage manner, wherein one ends of the plurality of ejector pins move along with the ejector pin backup plate and can extend into a cavity of a circuit breaker base model.

3. The injection molding mold according to claim 1 or 2, characterized in that: one side of the fixed plate of the static mold barrel is provided with a locking block, one end of the locking block is provided with a locking hole, and the lower mold backup plate is provided with a locking bolt matched with the locking hole.

4. The injection molding mold according to claim 1 or 2, characterized in that: and a heat insulation base plate is arranged between the base and the lower die backup plate.