CN201736412U - Hot runner structure - Google Patents

Abstract

A hot runner structure applied in a mould comprises a hot runner, a cooling jacket and a thermal insulating piece, wherein the hot runner is arranged in the mould, and a hot runner nozzle is arranged at the front end of the hot runner; the cooling jacket is arranged on the outer edge at the front end of the hot runner; and the thermal insulating piece is arranged at the front end of the hot runner nozzle. By adopting the hot runner structure that the thermal insulating piece and the cooling jacket are mounted between the hot runner and a mould insert or an end product, heat conduction is effectively reduced, blanking marks on the end product are avoided, and design requirements of customers are satisfied.

Description

The hot flow path structure

[technical field]

The utility model relates to a kind of hot flow path structure, is specifically related to a kind of hot flow path structure that finished product dashes the material trace that reduces.

[background technology]

In finished product ejection formation field, the extensive use of hot flow path technology, the hot flow path technology not only can reduce the waste of plastic material, also promotes and produces yield, has reduced production cost.Along with requirement of client is more and more higher, now the client can require the common die face of the direct charging of hot flow path at finished product, like this waste material still less, and the appearance of finished product the charging vestige can not occur.

See also shown in Figure 1ly, it illustrates the schematic diagram of existing hot flow path structure.This hot flow path 10 is open hot flow path, these open hot flow path 10 front ends are provided with hot flow path mouth 11, open hot flow path 10 direct chargings are at finished product 20 common die faces, because of above-mentioned open hot flow path 10 temperature very high, heat can be directly delivered on die and the finished product 20 in process of production, cause the plastics appearance surfaces after the moulding material trace (claiming thermal blooming again) can occur dashing, can't reach client's designing requirement.

In view of this, in fact be necessary to develop a kind of hot flow path structure, this hot flow path structure during at the finished product common die face, has effectively reduced hot conduction in the direct charging of hot flow path, prevents that the material trace from appearring dashing in finished product, reaches client's designing requirement.

[summary of the invention]

Therefore, the purpose of this utility model provides a kind of hot flow path structure, and this hot flow path structure during at the finished product common die face, has effectively reduced hot conduction in the direct charging of hot flow path, prevents that the material trace from appearring dashing in finished product, reaches client's designing requirement.

In order to achieve the above object, hot flow path structure of the present utility model is applied in the mould, and this hot flow path structure comprises:

One hot flow path, it is located in the above-mentioned mould, and the front end of this hot flow path is provided with the hot flow path mouth;

One cooling jacket, it is located at the outer rim of above-mentioned hot flow path front end;

One heat shield, it is located at above-mentioned hot flow path mouth front end, and the heat that this heat shield reduces hot flow path is sent on the above-mentioned cooling jacket.

Compared to prior art, hot flow path structure of the present utility model is installed heat shield and cooling jacket between hot flow path and die or finished product, effectively reduced hot conduction, prevents that the material trace from appearring dashing in finished product, reaches client's designing requirement.

[description of drawings]

Fig. 1 illustrates the schematic diagram of existing hot flow path structure.

Fig. 2 illustrates the schematic diagram of the utility model hot flow path structure.

[specific embodiment]

See also shown in Figure 2ly, it illustrates the schematic diagram of the utility model hot flow path structure.

Hot flow path structure of the present utility model, it is applied in the mould, and this hot flow path structure comprises:

One hot flow path 100, this hot flow path 100 is needle valve hot flow path or open hot flow path, in present embodiment, this hot flow path 100 is open hot flow path, this open hot flow path 100 is located in the above-mentioned mould, the front end of this open hot flow path 100 is provided with hot flow path mouth 110, and the front end temperature of this open hot flow path 100 is higher;

One cooling jacket 200, it is placed in the outer rim of above-mentioned open hot flow path 100 front ends, in this cooling jacket 200 normal-temperature water or frozen water is housed;

One heat shield 300, it is located at hot flow path mouth 110 front ends of above-mentioned open hot flow path 100, and the heat that this heat shield 300 is used to reduce open hot flow path 100 is sent to cooling jacket 200.

In present embodiment, hot flow path structure of the present utility model is installed heat shield 300 and cooling jacket 200 between open hot flow path 100 and finished product 400, the heat that reduces open hot flow path 100 by heat shield 300 is delivered on the cooling jacket 200, in cooling jacket 200, use normal-temperature water or frozen water cooling simultaneously, reduce cooling jacket 200 temperature, reduce heat and be sent on die and the finished product 400, effectively reduced hot conduction, prevent to occur on the finished product 400 dashing the material trace.

Compare with prior art, hot runner structure of the present utility model during at the finished product common die face, has effectively reduced hot conduction in the direct charging of hot flow path, prevents that punching material trace from appearring in finished product, reaches client's designing requirement.

Claims (1)

1. a hot flow path structure is applied to it is characterized in that in the mould, and this hot flow path structure comprises:

One hot flow path, it is located in the above-mentioned mould, and the front end of this hot flow path is provided with a hot flow path mouth;

One cooling jacket, it is located at the outer rim of above-mentioned hot flow path front end;

One heat shield, it is located at above-mentioned hot flow path mouth front end.

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