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Hot runner system and gas spring type nozzle thereof

A hot nozzle and hot runner technology, applied in the field of hot runner system, can solve the problem of difficult analysis results, and achieve the effects of saving raw materials, improving product quality, and convenient setting of molding conditions

Inactive Publication Date: 2011-08-10
SHANGHAI SHENGDI IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional simulation software is basically a passive calculation tool. Before the analysis, the user needs to design the forming scheme and determine the process parameters in advance. The analysis results are often difficult to directly guide the production.

Method used

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  • Hot runner system and gas spring type nozzle thereof
  • Hot runner system and gas spring type nozzle thereof
  • Hot runner system and gas spring type nozzle thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0088] In order to have a further understanding and understanding of the structural features of the present invention and the effects achieved, the preferred embodiments and accompanying drawings are used in conjunction with detailed descriptions, and the descriptions are as follows:

[0089] Due to some defects in the current hot runner system, such as complex mold structure, easy damage of heater components, high manufacturing cost, need for more precise temperature control device, molding resin must be clean and free of debris, resin replacement and color change are difficult, maintenance More complex, etc., but these shortcomings are gradually being overcome. At present, the main development trends of hot runner molds at home and abroad can be summarized into the following aspects.

[0090] Miniaturization of components to achieve multi-cavity in one mold for small products and multi-gate filling for large products. By reducing the nozzle space, more cavities can be configu...

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Abstract

The invention relates to a hot runner system and a gas spring type nozzle thereof. The hot runner system comprises a hot runner plate, a hot nozzle, a heating element and a temperature controller, wherein the hot nozzle comprises a nozzle body, a rear spreader, a needle valve, a spring, a front spreader, a nozzle mouth, a thermoelectric couple and a heater, wherein the nozzle body is in a hollow structure and internally provided with a spreader; the front part of the spreader is called as the front spreader, and the rear part of the spreader is called as the rear spreader; the spreader comprising the front spreader and the rear spreader is in a hollow structure and internally provided with the cross-shaped needle valve; one end of the needle valve extends out of the front spreader; the spring is arranged between the needle valve and the side part of the spreader; the needle valve is movably connected with the spreader through the spring; the outer surface of one side of the nozzle body is provided with the thermoelectric couple; and the outer surface of the thermoelectric couple is provided with the heater. By means of the invention, raw materials are saved, product cost is reduced, and the nozzle mouth is very reliable to close without generating wire drawing or pouring mouth protrusion, the quality of injection molding parts can be prevented from being influenced because plastics stay in a pouring runner of the nozzle.

Description

technical field [0001] The invention relates to a hot runner system, in particular to a hot runner system and a gas spring type nozzle which can save raw materials and reduce products. Background technique [0002] The hot runner system is generally composed of hot runner plates, hot nozzles, heating elements and thermostats. [0003] Hot runner plate: Its main task is to feed the melt from the main channel into each individual nozzle at a constant temperature. During the melt transfer process, the pressure of the melt is reduced as much as possible, and the material is not allowed to degrade. Commonly used hot runner plate forms are: in-line, H-type, Y-type, X-shaped, and there are two types of external heating hot runner plate and inner heating hot runner plate in structure. [0004] Nozzle: There are many types of hot runner molds according to the structure of the nozzle, and the types are similar, but the processing technology and implementation methods of each manufact...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C45/27B29C45/20
Inventor 马慎礼
Owner SHANGHAI SHENGDI IND
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