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Mold and manufacturing method of molded article using same

A molded product and mold technology, which is applied in the field of manufacturing molds and molded products using the mold, and can solve problems such as inconvenient demoulding

Active Publication Date: 2018-11-06
BRIDGESTONE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] It is known that the surface of a molded product has a certain degree of stickiness immediately after molding with a mold, which makes it difficult to release (take out) the molded product from the mold

Method used

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  • Mold and manufacturing method of molded article using same
  • Mold and manufacturing method of molded article using same
  • Mold and manufacturing method of molded article using same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] Hereinafter, a mold according to an embodiment of the present invention and a method of manufacturing a molded article using the mold will be described in detail with reference to the accompanying drawings. The mold of this embodiment will be described in conjunction with an injection molding apparatus that performs injection molding using unvulcanized rubber as a raw material. In this embodiment, the molded product Ma (refer to image 3 and Figure 4 ) is, for example, a guide member provided on the inner peripheral side of the rubber crawler with / without core core or a lug member provided on the outer peripheral side of the rubber crawler. Both components are made of unvulcanized rubber. In the following description, the up-down direction in the figure is defined as the up-down direction, and the left-right direction in the figure is defined as the horizontal direction.

[0028] exist figure 1 Among them, reference signs A and reference signs B respectively refer ...

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PUM

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Abstract

Provided are a mold allowing smooth removal of a molded article therefrom without deforming the molded article, and a method of producing the molded article using the mold. The mold includes a first mold piece (A), a second mold piece (B), and a plurality of third mold pieces (C). One of the first mold piece (A) and the second mold piece (B) has a protrusion cavity surface (2f) that protrudes toward the third mold piece (C) from a mating surface (1a) to contact with the third mold piece (C) and shapes an external profile of the molded article (Ma) together with a cavity surface (3f) of the third mold piece (C) when the mold pieces are clamped with each other.

Description

technical field [0001] The present invention relates to a mold and a method for manufacturing a molded article using the mold. Background technique [0002] It is known that the surface of a molded article has a certain degree of stickiness immediately after molding with a mold, thus causing inconvenience in demoulding (taking out) the molded article from the mold. One known solution to this problem is to close the mold with the position of the parting mold (mating surface of the mold) shifted by a predetermined position (for example, refer to Patent Document 1). [0003] prior art literature [0004] patent documents [0005] Patent Document 1: Japanese Patent Application Laid-Open No. 9-663 Contents of the invention [0006] The problem to be solved by the invention [0007] However, there is a demand in the market for an optional mold from which a molded product can be smoothly taken out without deforming the molded product. [0008] Accordingly, it is an object of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C45/33B29C33/44
CPCB29C33/48B29C33/202B29C45/2602B29C45/33B29K2021/00B29K2105/246
Inventor 杉原真吾
Owner BRIDGESTONE CORP