CN2797007Y

CN2797007Y - Hot mouth capable of directly changing colour for thermal flow path mould

Info

Publication number: CN2797007Y
Application number: CN 200520058242
Authority: CN
Inventors: 李象烈
Original assignee: SINO MOULD COMPONENT (DONGGUAN) CO Ltd
Current assignee: SINO MOULD COMPONENT (DONGGUAN) CO Ltd
Priority date: 2005-05-17
Filing date: 2005-05-17
Publication date: 2006-07-19
Anticipated expiration: 2015-05-17

Abstract

The utility model relates to the technical field of a hot flow passage die, particularly a hot mouth capable of directly changing color of a hot flow passage die. The utility model comprises a flow passage body, a heating device which is arranged on the periphery of the flow passage body, and a hot mouth which is arranged in a flow passage mould cavity of the flow passage body, wherein a passage which is communicated with the flow passage mould cavity is arranged in the hot mouth. The passage which is arranged in the hot mouth comprises a straight passage which is arranged on the upper end, and three branch passages which are arranged on the tail end of the straight passage and are communicated with the straight passage. A flow surface is formed on the surface of the hot mouth, and outlets of the branch passages are arranged on the surface of the hot mouth. In addition, the flow surface is a smooth curved surface. After the utility model adopts the structure, a passage which is arranged on the hot mouth part and is used for raw materials to flow out is very smooth. Positions of dead angles can not occur, which leads users to quickly complete the operation of changing colors. The utility model has the advantages of the reduction of the waste of the raw materials and the improvement of production efficiency.

Description

The hot mouth of the directly colour changing of hot runner mould

Technical field:

The utility model relates to the hot runner mould technical field, refers in particular to a kind of hot mouth of directly colour changing of hot runner mould.

Background technology:

Hot runner mould is present plastic material injection forming mold commonly used, and it is with respect to the mould of cold runner structure, has to economize in raw materials, and can enhance productivity, and improves product quality, plurality of advantages such as simplification product subsequent handling.Though hot runner mould has plurality of advantages, also there is certain deficiency in it.For example, common hot runner mould comprises a runner main body and the mouth body that is positioned at runner main body end, and the melt plastic cement that is positioned at the runner main body is squeezed out by the mouth body, injects mold cavity, is shaped to product.There is certain deficiency in design in present mouth body structure, makes hot runner mould have bigger waste when changing the different colours plastics.Particularly, in process of production, when changing the plastics of different colours, must earlier the plastics of the original color in the runner be discharged fully, in order to avoid the plastics of different colours mix mutually, deviation appears in the product color that makes injection moulding come out.But because the defective of mouth body structure in the present hot runner mould, make the mouth body have the dead angle easily, be that the operator is sought after discharging a large amount of new colored plastics, just the raw material that is positioned at this position, dead angle can be got rid of, sometimes even discharge a large amount of new raw materials, also be difficult to the raw material at this position, dead angle is thoroughly got rid of.So not only cause the waste of raw material, and also influenced production efficiency.

The utility model content:

Technical problem to be solved in the utility model overcomes the shortcoming of present product exactly, a kind of hot mouth of directly colour changing of hot runner mould is provided, by the utility model, the user can thoroughly get rid of original raw material in the runner fast, makes the simple, quick of colour changing operation change.

For solving the problems of the technologies described above, the utility model has adopted following technical scheme: the interior hot mouth of runner die cavity that it comprises the runner body, is arranged at the heater of runner body periphery and is arranged at the runner body, offer the passage that is communicated with the runner die cavity in the hot mouth, three shuntings that are communicated with it that passage in the described hot mouth comprises the straight way of upper end and is positioned at the straight way end, and the hot nozzle surface at outlet place, shunting forms a stream interface, and this stream interface is a smooth curved surface.

After the utility model adopted said structure, hot mouth was very smooth and easy for the runner that raw material flows out, and the position, dead angle can not occur, makes the user can finish the colour changing operation fast, reduced the waste of raw material, improved the efficient of producing.

Description of drawings:

Below in conjunction with accompanying drawing the utility model is further described:

Fig. 1 is an internal structure cutaway view of the present utility model;

Fig. 2 is the stereogram of the hot mouth of the utility model.

The specific embodiment:

See Fig. 1,2, the utility model comprises: runner body 1, be arranged at the heater 2 of runner body 1 periphery and be arranged at hot mouth 3 in the runner body 1 runner die cavity.

Heater 2 comprises and is surrounded on the outer heating circle 21 of runner body 1 and is located in the outer sleeve pipes 22 of heating circle 21.The high temperature that heating circle 21 produces makes the plastics in the runner body 1 inner flow passage die cavity remain on molten condition.

Hot mouth 3 is fixed on runner die cavity end by lining 4.Offer a passage 30 that is communicated with the runner die cavity in the hot mouth 3, this passage 30 comprises: three shuntings 302 that are communicated with it that are positioned at the straight way 301 of upper end and are positioned at straight way 301 ends, Open Side Down in shunting 302 inclination certain angle, the axis angle that is straight way 301 and shunting 302 is an obtuse angle, adopts this structure can make the easier outflow of plastics.In addition, hot mouth 3 surfaces at 302 outlet places, shunting form a stream interface 303, and this stream interface 303 is a smooth curved surface, and this stream interface 303 forms the space of flowing out for raw material with lining 4 inwalls.

After the utility model adopted said structure, 3 runners for the raw material outflow of hot mouth were very smooth and easy, the position, dead angle can not occur, make the user can finish the colour changing operation fast, reduce the waste of raw material, improve the efficient of producing.

Certainly, the above only is example of the utility model, be not to limit the utility model practical range, all equivalences of doing according to the described structure of the utility model claim, feature and principle change or modify, and all should be included in the utility model claim.

Claims

1, the hot mouth of the directly colour changing of hot runner mould, comprise: runner body (1), be arranged at the peripheral heater (2) of runner body (1) and be arranged at the interior hot mouth (3) of runner body (1) runner die cavity, offer the passage (30) that is communicated with the runner die cavity in the hot mouth (3), it is characterized in that: the passage (30) in the described hot mouth (3) comprises the straight way (301) of upper end and is positioned at three terminal shuntings (302) that are communicated with it of straight way (301), and hot mouth (3) surface at shunting (302) outlet place forms a stream interface (303), and this stream interface (303) is a smooth curved surface.

2, the hot mouth of the directly colour changing of hot runner mould according to claim 1 is characterized in that: said hot mouth (3) is fixed in the end of runner body (1) runner die cavity by lining (4).