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Valve needle head structure

A head and valve needle technology, applied in the field of valve needle head structure, can solve the problems of small space, affecting the quality of rubber products, unfavorable plastic flow and filling, etc., to increase the gap, facilitate the flow of molten plastic, and improve product quality Effect

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

AI Technical Summary

Problems solved by technology

However, the space between the head of the valve needle and the gate of the hot runner currently used is small. When the molten plastic flows through, it is not conducive to the flow and filling of the plastic, thus affecting the quality of the plastic product.

Method used

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Embodiment Construction

[0013] A valve needle head structure, comprising a cylindrical valve needle body 1 and a head arranged on one end of the valve needle body, the head is composed of a connecting part 2, a head body 3 and a tip 4, the tip Set at one end of the head body, the other end of the head body is fixedly connected with the valve needle body through the connecting part; the head body is a cylinder with a radius smaller than the valve needle body .

[0014] Preferably, the above-mentioned tip is in the shape of a truncated cone, and the surface area of ​​the end away from the head body is small.

[0015] Preferably, the radius of the connecting portion gradually decreases from the valve needle body to the head body.

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Abstract

The invention discloses a valve needle head structure which comprises a cylindrical valve needle body and a head arranged at one end of the valve needle body. The head is composed of a connection portion, a head body and a tip portion. The tip portion is arranged at one end of the head body, and the other end of the head body is fixedly connected with the valve needle body through the connection portion. The head body is a cylinder, and the semi-diameter of the head body is smaller than that of the valve needle body. The valve needle not only can facilitate flowing of fusing plastic but also is high in molding quality.

Description

technical field [0001] The invention relates to the field of pouring molding, in particular to a valve needle head structure. Background technique [0002] In the field of casting and molding, the valve pin is often used to control the closing and opening of the hot runner gate, and the opening, closing and opening of the gate is realized by the closing and opening of the oil cylinder or cylinder piston to drive the valve pin forward and backward. However, the space between the head of the valve needle and the gate of the hot runner used at present is small, and when the molten plastic flows through, it is not conducive to the flow and filling of the plastic, thereby affecting the quality of the plastic product. Contents of the invention [0003] In order to overcome the above defects, the present invention provides a valve needle head structure, which not only facilitates the flow of molten plastic, but also has high molding quality. [0004] The technical solution adopt...

Claims

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Application Information

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IPC IPC(8): B29C45/28
Inventor 安凌
Owner 马斯特模具有限公司