CN202922899U

CN202922899U - Injection mold gate

Info

Publication number: CN202922899U
Application number: CN 201220621641
Authority: CN
Inventors: 高冠强; 姚力中; 柴波; 曾松
Original assignee: QINGDAO JUSTUSE MOULDS TECHNOLOGY Co Ltd
Current assignee: QINGDAO JUSTUSE MOULDS TECHNOLOGY Co Ltd
Priority date: 2012-11-22
Filing date: 2012-11-22
Publication date: 2013-05-08
Anticipated expiration: 2022-11-22

Abstract

The utility model provides an injection mold gate and can solve problems in the prior art that a hook-shaped concealment type gate cannot contain a cold material or reduce the glue speed rate, and rinsing marks are formed on the surface of a product. The injection mold gate comprises three sections of auxiliary gates which hare continuous; along the flowing direction of materials in the gate, the fist section of auxiliary gate is of a T shape, the second section of auxiliary gate is of a U shape, and the third section of auxiliary gate is of T shape inverted for 90 degrees to one side. The gate provided by the utility model can integrally present an irregular turn shape; in the injection molding process, a molten material is refracted through the turns, the speed of glues entering the front end of a mould cavity can be effectively controlled and surface defects such as rinsing marks are eliminated; and the gate is arranged on an inclined top, two cold material columns arranged on the rear side of the traditional hook concealment type gate are not used, and the raw materials are saved.

Description

Injection moulding die casting mouth

Technical field

The utility model belongs to the mould for plastics technical field, is specifically related to the architecture advances of cast gate in injection mold.

Background technology

Along with the progress of Shooting Technique, people require more and more higher to the surface quality of injecting products, require injecting products surface weldless trace, without current mark, and surface gloss is high, and traditional moulds can not satisfy this generic request.High gloss mold has appearred at present, the fast thermal cycle injection molding technology of expressing one's gratification again, this technology can make injecting products surperficial without molten trace, without current mark, without streamline, without shrink mark, surface gloss reaches mirror effect, improve product strength and hardness, make shaping thin wall improve Injection Molding, make the heavy wall injection molding cycle reduce more than 60%.

High gloss mold comprises the high gloss mold of hot water and the high gloss mold of steam, and wherein the high gloss mold of hot water claims again pseudo-high gloss mold, can obtain higher product surface quality.In prior art, the cast gate of the high gloss mold of hot water is the hook solid sub marine gate, be circular-arc, this cast gate advances to water a little and slips into article inner surface along the circular arc runner, can't contain cold burden and reduce and advance glue speed, and cold burden can present the shape punching material trace that scatters at product surface after entering die cavity; In addition, cast gate is fixed on core by the form of mold insert, and material is being connected as a single entity with product, and material is the rear end that two larger pillarings prevent product viscous in quiet mould by sprue puller, and the raw material use amount is large.

Summary of the invention

The utility model provides a kind of injection moulding die casting mouth, can solve prior art hook solid sub marine gate and can't contain cold burden and reduce and advance glue speed, makes product surface present the problem of punching material trace.

For reaching the purpose that solves the problems of the technologies described above, the utility model is achieved by the following technical solutions: a kind of injection moulding die casting mouth, described cast gate comprises 3 sections continuous sub-cast gates, along Flow of Goods and Materials direction in cast gate, the first cross-talk cast gate is T-shaped, the second cross-talk cast gate takes the shape of the letter U, and the 3rd cross-talk cast gate is to 90 ° of inverted T shapes of a side.

In the technical solution of the utility model, also comprise following feature: along the mobile direction of fused materials in cast gate, the material flow of each cross-talk cast gate reduces successively.

In the technical solution of the utility model, also comprise following feature: described cast gate is positioned on oblique top.

Compared with prior art, each section of the utility model cast gate adopts specific shape, makes cast gate integral body present irregular shape of turning round, in injection moulding process, fused materials is by these several sections refractions of turning round, effectively controlled enter the die cavity front end advance glue speed, eliminate the blemish such as punching material trace; Cast gate is opened on oblique top, has saved two very long pillarings of traditional crotch sub marine gate rear side, conservation, and facilitate the manipulator pickup, eliminate traditional cast gate and break in mould or leak the risk that the feeding hair is given birth to crowded mould.

Description of drawings

Fig. 1 is the structural representation of the utility model injection moulding die casting mouth embodiment;

Fig. 2 is A section structure enlarged drawing in Fig. 1.

The specific embodiment

For the purpose, technical scheme and the advantage that make the utility model embodiment clearer, below in conjunction with the accompanying drawing in the utility model embodiment, technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that obtains under the creative work prerequisite, all belong to the scope of the utility model protection.

Shown in seeing figures.1.and.2, the present embodiment injection moulding die casting mouth J comprises 3 sections continuous sub-cast gates, along the mobile direction of fused materials in cast gate J, the first cross-talk cast gate J1 is T-shaped, and the second cross-talk cast gate J2 takes the shape of the letter U, and the 3rd cross-talk cast gate J3 is to 90 ° of inverted T shapes of a side.In figure, dotted line a is the line of demarcation of the first cross-talk cast gate J1 and the second cross-talk cast gate J2, and dotted line b is the line of demarcation of the second cross-talk cast gate J2 and the 3rd cross-talk cast gate J3.

Particularly, the first cross-talk cast gate J1 is T-shaped, comprise the sub-cast gate of the sub-cast gate of horizontal part and vertical portion, the end of the sub-cast gate of horizontal part forms the first cold burden section J11 that can contain cold burden, the second cross-talk cast gate J2 takes the shape of the letter U, its end forms the second cold burden section J21 that can contain cold burden, the 3rd cross-talk cast gate J3 is to 90 ° of inverted T shapes of a side, comprise the sub-cast gate of the sub-cast gate of horizontal part and vertical portion, the bottom of the sub-cast gate in vertical portion forms the 3rd cold burden section J31 that contains cold burden, and the sub-cast gate of horizontal part connects the second cross-talk cast gate J2.Every cross-talk cast gate all is formed with the cold burden section that can contain cold burden, enters die cavity thereby can farthest reduce cold burden, effectively controls and rushes the material trace due to what cold burden caused.Simultaneously, in injection moulding process, fused materials has controlled by the buffering of turning round of this three cross-talks cast gate the charging rate that enters the die cavity front end effectively, has further eliminated punching material trace.

For reduce be introduced into cast gate material and after enter between the material of cast gate the temperature difference, control the defective that causes due to cold burden, along the direction that flows of fused materials in cast gate, the material flow of each cross-talk cast gate reduces successively.

Be conservation, reduce the Mould Machining cost, the present embodiment cast gate J is positioned on oblique top X.

The above, it is only preferred embodiment of the present utility model, be not to be the utility model to be done the restriction of other form, any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed or be modified as the equivalent embodiment of equivalent variations.But every technical solutions of the utility model content that do not break away to any simple modification, equivalent variations and remodeling that above embodiment does, still belongs to the protection domain of technical solutions of the utility model according to technical spirit of the present utility model.

Claims

1. injection moulding die casting mouth, it is characterized in that: described cast gate comprises 3 sections continuous sub-cast gates, and along Flow of Goods and Materials direction in cast gate, the first cross-talk cast gate is T-shaped, and the second cross-talk cast gate takes the shape of the letter U, and the 3rd cross-talk cast gate is to 90 ° of inverted T shapes of a side.

2. injection moulding die casting mouth according to claim 1 is characterized in that: along the direction that flows of fused materials in cast gate, the material flow of each cross-talk cast gate reduces successively.

3. injection moulding die casting mouth according to claim 1 and 2, it is characterized in that: described cast gate is positioned on oblique top.