CN203543016U

CN203543016U - Sprue-free waste material injection molding structure

Info

Publication number: CN203543016U
Application number: CN201320696419.6U
Authority: CN
Inventors: 毛爱华
Original assignee: SICHUAN CHANGHONG MOLDING TECHNOLOGY Co Ltd
Current assignee: SICHUAN CHANGHONG MOLDING TECHNOLOGY Co Ltd
Priority date: 2013-11-06
Filing date: 2013-11-06
Publication date: 2014-04-16
Anticipated expiration: 2023-11-06

Abstract

The utility model relates to the field of injection molds, in particular relates to a sprue-free waste material injection molding structure, and aims at providing the sprue-free waste material injection molding structure through which split runner sprue runner waste materials are not incidentally generated on a surface frame after a television surface frame is formed in an injection molding mode. According to the technical scheme, the sprue-free waste material injection molding structure comprises a front mold insert, a hot runner formed inside the front mold insert, and a rear mold insert which is tightly adhered to the front mold insert, wherein a forming cavity is arranged on the boundary surface of the front mold insert and the rear mold insert; the outlet end of the hot runner is formed in the wall surface of the forming cavity. As the outlet end of the hot runner is directly arranged on the wall of the forming cavity, injection molding slurry for casting can be directly fed into the forming cavity after passing through the hot runner, and according to the conventional scheme, split runners are canceled, i.e., the runner waste materials of the runner sprue are prevented in production and casting. The structure can be applied to manufacturing of a product such as a television surface frame as a representative.

Description

Without cast gate waste material injection mold structure

Technical field

The utility model relates to injection mold field, especially a kind of without cast gate waste material injection mold structure.

Background technology

At present, in traditional tv machine side frame injection mold structure, be generally the conveying that realizes injection moulding slip by being arranged at runner between hot flow path and die cavity, injection moulding slip is successively by hot flow path, runner, finally just arrives in die cavity.But, just because of the existence of runner, after forming parts, can on part, attach and produce a large amount of runner sprue channel waste materials, this not only can increase production cost, also needs extra increase manpower and materials to remove unnecessary runner sprue channel waste material.In addition, the service life of injection mold, runner sprue channel waste material can cause waste and the environmental pollution of great amount of cost generally more than 300,000 moulds, and discarded plastics also can cause unnecessary environmental pollution in removal process.

Utility model content

Technical problem to be solved in the utility model is to provide a kind of after the injection mo(u)lding of TV machine side frame, can on face frame, not attach generation runner sprue channel waste material without cast gate waste material injection mold structure.

The utility model solves the technical scheme that its technical problem adopts: without cast gate waste material injection mold structure, the rear mold mold insert that comprises front mould mold insert, is arranged at hot flow path in front mould mold insert, is close to front mould mold insert, on the interface of front mould mold insert and rear mold mold insert, be provided with die cavity, the port of export of described hot flow path is arranged on surface of mould cavity.

Further: comprise the face frame push rod being slidably arranged in rear mold mold insert, the termination of described frame push rod one end is positioned on the wall of die cavity.

Further: described hot flow path is at least two, and the arrival end of all hot flow paths is all communicated with by pouring channel.

The beneficial effects of the utility model are: by directly the port of export of hot flow path being arranged on surface of mould cavity, the injection moulding slip that can guarantee casting directly enters in die cavity after by hot flow path, thereby saved the runner in traditional scheme, also when producing casting, just avoided generation runner sprue channel waste material.The utility model can be applied to be manufactured take TV machine side frame in the product of representative.

Accompanying drawing explanation

Fig. 1 is the cutaway view of the utility model side.

Fig. 2 is front view of the present utility model.

In figure, be labeled as: cover half fixed head 1, pouring channel 2, hot flow path 3, the port of export 31, arrival end 32, front mould mold insert 4, rear mold mold insert 5, face frame push rod 6, die cavity 7.

The specific embodiment

Below in conjunction with accompanying drawing, the utility model is further illustrated.

As shown in Figure 1 and Figure 2 without cast gate waste material injection mold structure, the rear mold mold insert 5 that comprises front mould mold insert 4, is arranged at hot flow path 3 in front mould mold insert 4, is close to front mould mold insert 4, on the interface of front mould mold insert 4 and rear mold mold insert 5, be provided with die cavity 7, the port of export 31 of described hot flow path 3 is arranged on die cavity 7 walls.

The general TV machine side frame of producing is the less frame in cross section, and when actual production, required die cavity 7 is close to formation by front mould mold insert 4 and rear mold mold insert 5., the port of export of hot flow path 3 31 is arranged on die cavity 7 walls meanwhile, guarantees that injection moulding slip is directly entering in die cavity 7 by hot flow path 3 is rear, and finally form except product framework the qualified products without runner sprue channel waste material again.

For convenient, product is ejected in die cavity 7 completing after production, can select such scheme: set up the face frame push rod 6 being slidably arranged in rear mold mold insert 5, the termination of described frame push rod 6 one end is positioned on the wall of die cavity 7.As shown in Figure 1, product is positioned at die cavity 7 after completing, and now only needs drive surface frame push rod 6 directly face frame product to be ejected, easy and simple to handle and efficiency is very high, is applicable to automated production flow process.

In order to simplify the structure of mould when casting, can select such scheme: described hot flow path 3 is at least two, and the arrival end 32 of all hot flow paths 3 is all communicated with by pouring channel 2.As shown in Figure 1, can arrange that multiple hot flow paths 3 are to guarantee the uniformity of grouting, meanwhile, the pouring channel 2 of setting up can be carried injection moulding slip for all hot flow paths 3 simultaneously, has greatly simplified the structure of mould simultaneously.

Claims

1. without cast gate waste material injection mold structure, the rear mold mold insert (5) that comprises front mould mold insert (4), is arranged at hot flow path (3) in front mould mold insert (4), is close to front mould mold insert (4), it is characterized in that: on the interface of front mould mold insert (4) and rear mold mold insert (5), be provided with die cavity (7), the port of export (31) of described hot flow path (3) is arranged on die cavity (7) wall.

2. as claimed in claim 1 without cast gate waste material injection mold structure, it is characterized in that: comprise the face frame push rod (6) being slidably arranged in rear mold mold insert (5), the termination of described frame push rod (6) one end is positioned on the wall of die cavity (7).

3. as claimed in claim 1 or 2 without cast gate waste material injection mold structure, it is characterized in that: described hot flow path (3) is at least two, and the arrival end (32) of all hot flow paths (3) is all communicated with by pouring channel (2).