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Sprue bush and bush part therof

A technology for sleeves and parts, applied in the field of sleeve parts, can solve the problems of deterioration of the quality of formed parts and changes in the shape of the mold, and achieve the effects of high heat dissipation, wire drawing inhibition, and high cooling efficiency.

Active Publication Date: 2018-01-02
PLA MOUL SEIKO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there are problems that when the wire is sandwiched in the mold, the shape of the mold changes, the quality of the molded part deteriorates, etc.

Method used

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  • Sprue bush and bush part therof
  • Sprue bush and bush part therof
  • Sprue bush and bush part therof

Examples

Experimental program
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Effect test

Embodiment Construction

[0037] Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, the embodiment examples mentioned above do not limit the technical scope of the present invention.

[0038] figure 1 It is a figure which shows the structure of the sprue bushing in 1st Embodiment of this invention, figure 1 (a) is a perspective view of the appearance, figure 1 (b) is a sectional view, figure 1 (c) is a sectional perspective view, figure 1 (d) is a side view, figure 1 (e) is a plan view. The sprue bushing in the first embodiment includes a sprue bushing main body 10 and a bushing member 20 attached to the sprue bushing main body 10 .

[0039] The sprue bushing main body 10 is formed of a steel material having hardness required for properties such as wear resistance and durability, and the sprue bushing main body 10 is a disc-shaped head 10a and a cylindrical shaft having a smaller diameter than that. The portion 10b is integrally formed co...

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PUM

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Abstract

Provided is a new sprue bush capable of preventing stringiness. The sprue bush attached to a mold for molding synthetic resin is provided with: a sprue bush body (10) having a flow path for the synthetic resin injected from an injection molding nozzle and having a concave part (13) on a surface thereof on a side where the synthetic resin is to be poured; and a bush part (20) embedded in the concave part (13). The bush part (20) has a nozzle contact surface (21) where the injection molding nozzle contacts, a through-hole (22) extending from an opening of the nozzle contact surface (21) and communicating with a flow path of the spur bush body to form the flow path for the synthetic resin, and a plurality of ribs (23) extending radially from an inner peripheral surface of the through-hole toan outside.

Description

technical field [0001] The present invention relates to a sprue bushing attached to a mold for molding synthetic resin and a bushing member attached to the sprue bushing. Background technique [0002] In injection molding of synthetic resin, for example, a pair of molds are closed to form a cavity therebetween, and molten synthetic resin is injected into the cavity to perform molding processing of the synthetic resin. The sprue bushing is a part that has a flow path (runner) that injects the synthetic resin injected from the injection molding machine into the mold, and the sprue bushing is replaceably attached to the mold on the side where the synthetic resin is injected, The injection nozzle of the injection molding machine is in direct contact with the nozzle contact surface of the sprue bushing and injects synthetic resin. In injection molding, the molten high-temperature resin material is injected into the cavity through the runner of the sprue bushing and the runner in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C45/27
CPCB29C45/27B29C2045/2724B29C2045/2766B29C2045/2767B29C45/1781B29C45/2701B29C2045/277
Inventor 胁山高志
Owner PLA MOUL SEIKO
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