CN102328389A

CN102328389A - Mould structure of plastic injection product

Info

Publication number: CN102328389A
Application number: CN201110198805A
Authority: CN
Inventors: 张卫
Original assignee: Vanguard Wuxi Science and Technology Co Ltd
Current assignee: Vanguard Wuxi Science and Technology Co Ltd
Priority date: 2011-07-15
Filing date: 2011-07-15
Publication date: 2012-01-25

Abstract

The invention provides a mould structure of a plastic injection product, which is used for enabling the strength of a filling position of a product at the end farthest away from a gate to be good and the strength of the whole product to be good so as to meet the normal strength requirement of the product. The mould structure of the plastic injection product comprises a runner, the gate, a front mould core and a back mould core, wherein the front mould core and the back mould core are mutually matched to form a diccavity; and the runner is communicated with the gate after penetrating through the front mould core. The mould structure of the plastic injection product is characterized in that the diccavity at the end farthest away from the gate is internally provided with cold material troughs which are specifically overflow cavities formed in a manner that the front mould core and the back mould core are mutually matched.

Description

The mould structure of injecting products

Technical field

The present invention relates to the mould structure technical field, be specially the mould structure of injecting products.

Background technology

Existing injecting products is in the phenomenon that fracture takes place apart from the filling position of the distal-most end of cast gate, and common way is that the filling position apart from the distal-most end of cast gate at product increases air discharge duct, through being adjusted to the intensity after shape parameter improves the product welding.But after increasing this structure, though observe with eyes from product surface, just do not see the existence of weld mark, the intensity of a lot of products is still very poor at all, can't satisfy the normal intensity demand of product.

Summary of the invention

The invention provides the mould structure of injecting products, it makes product good apart from the intensity of the filling position of cast gate distal-most end, makes that the intensity of entire product is good, satisfies the normal intensity demand of product.

The mould structure of injecting products; It comprises runner, cast gate, front mould core, back model core; Said front mould core, back model core complement each other to form die cavity; It was communicated with said cast gate after said runner ran through said front mould core, it is characterized in that: be provided with the cold burden groove in the die cavity apart from the cast gate distal-most end, said cold burden groove is specially flash cavity, its cavity that is complemented each other to form by said front mould core, back model core.

It is further characterized in that: the bottom of cold burden groove is provided with cold burden groove thimble, and the bottom of said cold burden groove thimble is anchored on face needle plate, both integral body of end needle plate.

After adopting structure of the present invention; Owing to be provided with the cold burden groove in the die cavity apart from the cast gate distal-most end, be the material in the cold burden groove apart from the cast gate distal-most end, so the intensity difference of the material in the cold burden groove; Artificial removal after injection moulding is accomplished; It makes that the intensity apart from the filling position of cast gate distal-most end of product is good, makes that the intensity of entire product is good, satisfies the normal intensity demand of product.

Description of drawings

Fig. 1 is a front view structural representation of the present invention.

The specific embodiment

See Fig. 1; It comprises runner 1, cast gate 2, front mould core 3, back model core 4; Front mould core 3, back model core 4 complement each other to form die cavity 5; Runner 1 runs through front mould core 3 backs, and it is communicated with cast gate 2, is provided with cold burden groove 6 in the die cavity 5 apart from cast gate 2 distal-most end, and cold burden groove 6 is specially flash cavity, its cavity that is complemented each other to form by front mould core 3, back model core 4; The bottom of cold burden groove 6 is provided with cold burden groove thimble 7, and the bottom of cold burden groove thimble 7 is anchored on both integral body of face needle plate 8, end needle plate 9.

Its operation principle is following: through runner 1 injecting material, accomplish until injection moulding, front mould core 3 rises then; Afterwards, 7 actions of cold burden groove thimble eject the blank product; Because the existence of cold burden groove thimble 7, thus no longer need the product thimble, thereby feasible not again the outer surface of product stay the vestige of thimble; Guarantee the product external surfaces quality, the cold burden groove material on artificial removal's blank product afterwards, thus obtain final products.

Claims

1. the mould structure of injecting products; It comprises runner, cast gate, front mould core, back model core; Said front mould core, back model core complement each other to form die cavity; It was communicated with said cast gate after said runner ran through said front mould core, it is characterized in that: be provided with the cold burden groove in the die cavity apart from the cast gate distal-most end, said cold burden groove is specially flash cavity, its cavity that is complemented each other to form by said front mould core, back model core.

2. the mould structure of injecting products according to claim 1, it is characterized in that: the bottom of cold burden groove is provided with cold burden groove thimble, and the bottom of said cold burden groove thimble is anchored on face needle plate, both integral body of end needle plate.