Improved structure of hot runner mold

An improved structure and hot runner technology, which is applied in the field of injection molds, can solve the problems of complex mold structure and high manufacturing cost of hot runner molds, and achieve the effects of improving mold quality, preventing excessive heat loss, and avoiding wire drawing

Inactive Publication Date: 2013-06-05
马斯特模具有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the structure of the mold manufactured by these improved methods is

Method used

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  • Improved structure of hot runner mold

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Embodiment Construction

[0008] The embodiment of the improved structure of the hot runner mold of the present invention will be described in detail below with reference to the accompanying drawings.

[0009] The improved structure of a hot runner mold according to the present invention includes a hot template 1, a bushing 2 and a hot runner 3 positioned on the bushing and communicating with the cavity of the mould, the hot template and the A gap is formed between the bushes, and the bush is integrally formed with the main channel bush and the nozzle bush, so that the diameter of the hot runner can be enlarged and the plastic flow is facilitated; and the bush faces one end of the cavity There are several round holes 5, which can prevent excessive heat loss at the nozzle of the hot runner; a cold runner 4 is provided between the nozzle of the hot runner and the cavity, and the cold runner is positioned On the thermal template 1 of the hot runner.

[0010] In this embodiment, the circular holes are pos...

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Abstract

The invention discloses an improved structure of a hot runner mold. The improved structure comprises a hot template, a liner, and a hot runner located on the liner and communicated with a cavity of the mold. A gap is formed between the hot template and the liner, the liner is formed by a main runner liner and a nozzle liner in an integrated mode, one end of the liner towards the cavity is provided with a plurality of round holes, a cold runner is arranged between a nozzle of the hot runner and the cavity, and the cold runner is located on the hot template of the hot runner. According to the improved structure, the diameter of the hot runner can be increased, plastic flowing is benefited, heat in the nozzle of the hot runner can be prevented from being exceedingly dissipated, wire drawing phenomena at the nozzle are avoided, and the quality of the mold is effectively improved.

Description

technical field [0001] The invention relates to the field of injection molds, in particular to an improved structure of a hot runner mold. Background technique [0002] In the pouring structure of conventional hot runner molds, due to the high temperature of the plastic at the nozzle, wire drawing, yellowing or casting phenomenon occurs at the nozzle. Commonly used treatment methods include: improving the cooling water circuit around the nozzle, setting a backflow decompression chamber at the hot runner plate or the nozzle, etc. But the structure of the mold manufactured by these improved methods is complicated, and the manufacturing cost of the hot runner mold is expensive. Contents of the invention [0003] In order to overcome the above-mentioned defects, the present invention provides an improved structure of a hot runner mold, which is simple and practical, has a low manufacturing cost, can avoid wire drawing at the nozzle, and improves the quality of the mold. [0...

Claims

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Application Information

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IPC IPC(8): B29C45/27
Inventor 安凌
Owner 马斯特模具有限公司
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