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Valve needle and hot runner system with same

A technology of hot runners and valve pins, applied in the field of hot runners, can solve problems such as adhesion of injection molded products, affecting the processing yield of injection molded products, heating marks, etc., to achieve the effect of reducing heat capacity, reducing the possibility of adhesion, and improving yield

Inactive Publication Date: 2018-11-16
YUDO SUZHOU HOT RUNNER SYST
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  • Summary
  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0004] At least the lower end of the valve needle moves in the molten rubber. With the reciprocating motion, the valve needle constitutes a heat conducting member that continuously transfers heat to the gate, which often causes the corresponding gate on the surface of the injection molded product to appear. Heating marks, or adhesion of injection molded products, affect the processing yield of injection molded products

Method used

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  • Valve needle and hot runner system with same
  • Valve needle and hot runner system with same
  • Valve needle and hot runner system with same

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Embodiment Construction

[0021] The present invention will be described in detail below in conjunction with specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any structural, method, or functional changes made by those skilled in the art according to these embodiments are included in the protection scope of the present invention.

[0022] An embodiment of the present invention provides a hot runner system, which is applied in an injection mold. The hot runner system includes a driving device, a manifold, a hot nozzle, and a valve needle.

[0023] The hot nozzle is assembled under the splitter plate, and a hot runner for the molten glue to flow is formed in the splitter plate and the hot nozzle. Wherein, the hot runner includes a distribution channel formed in the splitter plate, the distribution channel has a glue inlet that is compatible with the injection molding machine nozzle, and at least one glue outlet; The delivery chann...

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Abstract

The invention discloses a valve needle and a hot runner system with same. The valve needle has a valve needle body, which is provided with an upper end and a lower end opposite to each other, the lower end being corresponded to a sprue of the hot runner. The valve needle also has a cavity, which is formed in the valve needle body in a sealed structure and is closed to the lower end of the valve needle body.

Description

technical field [0001] The invention relates to the technical field of hot runners, in particular to a valve needle and a hot runner system with the valve needle. Background technique [0002] At present, the injection molds commonly used in the injection molding industry are hot runner injection molds. Compared with ordinary molds, the plastic products injected through the hot runner system are of higher quality, and the hot runner system has the advantages of saving raw materials, improving production efficiency, and high degree of automation. [0003] A hot runner system usually includes a drive unit, a hot nozzle assembly, and a valve needle. The valve needle is at least partly arranged inside the hot nozzle assembly, and the driving device is directly or indirectly connected to the upper end of the valve needle and drives the valve needle to reciprocate in the longitudinal direction (that is, up and down direction), so that all The lower end of the valve needle closes ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C45/28B29C45/27
CPCB29C45/2806B29C45/27
Inventor 李象烈
Owner YUDO SUZHOU HOT RUNNER SYST
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