Sprue bushing and method of making the same

A manufacturing method and sprue technology, applied in the direction of additive manufacturing, additive processing, process efficiency improvement, etc., can solve the problems of difficult cooling and solidification of molten resin raw materials, difficult cooling and solidification, and longer molding cycle

Active Publication Date: 2022-07-08
PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, if the tapered raw material resin flow path 10' becomes longer, the influence on the downstream side with a relatively wider width W' will increase accordingly, and the molten resin raw material will become more difficult to cool and solidify.
If the molten resin raw material is difficult to cool and solidify, the time required from injecting the molten raw resin to taking out the molded product will increase, resulting in a longer molding cycle

Method used

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  • Sprue bushing and method of making the same
  • Sprue bushing and method of making the same
  • Sprue bushing and method of making the same

Examples

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Embodiment Construction

[0039] Hereinafter, one embodiment of the present invention will be described in detail with reference to the accompanying drawings. The form and size of each element in the drawings are merely examples, and do not reflect the actual form and size.

[0040] The present invention is based on the technical idea that the resulting sprue bush is formed by at least two parts (a base part and a molding part). The "base" referred to here essentially refers to the existing sprue sleeve. Since the base is essentially an existing sprue bush, the base can be used as a part for injection molding without providing another part (molding part) on the base body. Nonetheless, the present invention is characterized in that the resulting sprue sleeve is intentionally formed by at least two parts (the base and the moulding).

[0041] like figure 1 As shown, the sprue bush 100 which concerns on one Embodiment of this invention can be obtained by combining the base part 100A and the shaping|mol...

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PUM

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Abstract

In order to provide a method of manufacturing a sprue bushing capable of appropriately cooling a molten resin raw material in a raw resin flow path as a whole, in one embodiment of the present invention, there is provided a method of manufacturing a sprue bushing comprising a raw material resin A molding part is provided on the base of the flow path and the cooling medium flow path to manufacture a sprue sleeve, a downstream raw resin flow path part corresponding to the downstream side region of the raw resin flow path of the sprue sleeve is provided in the molding part, and a downstream raw material resin flow path part is provided in the molding part. The periphery of the resin flow path portion corresponds to the downstream cooling medium flow path portion of the downstream side region of the cooling medium flow path of the sprue jacket, and the downstream cooling medium flow path portion is provided so as to surround the downstream raw material resin flow path portion.

Description

technical field [0001] The present invention relates to a runner sleeve and a method of manufacturing the same. More specifically, the present invention relates to a runner sleeve for a mold and a method of making the same. Background technique [0002] Molding technology using molds is one of the technologies that supports Japan's manufacturing industry. As this molding technique, a press molding method, an injection molding method, an extrusion molding method, etc. are mentioned. Among these molding methods, the injection molding method is a method of obtaining a molded product by melting a resin raw material using a mold for injection molding. [0003] In the injection molding method, a molten resin raw material is injected into a mold cavity 203 composed of one mold (core side mold) 201' and the other mold (cavity side mold) 202' of the injection molding mold 200' 'in (see Figure 11 ). The injected molten resin raw material is cooled and solidified in the mold cavit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C33/38B29C45/27
CPCB29C45/27B29C45/2737Y02P10/25B22F10/20B33Y10/00B33Y80/00B29C33/3842B29K2905/00
Inventor 渡边真也阿部谕田中健一森干夫内野野良幸
Owner PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
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