Mold opening method for pipe joint injection mold

A technology for injection molds and pipe joints, which is used in household appliances, other household appliances, household components, etc., and can solve the problem that the mandrel cannot be pulled out in a straight line.

Active Publication Date: 2016-10-12
JIANGSU HIPPO PLASTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is: in order to overcome the deficiency that the mandrel for injection molding cannot be pulled out in a straight line in the prior art, the present invention provides a mold opening method for an injection mold of a pipe joint. The mandrel is taken out, providing a new way of extracting the mandrel

Method used

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  • Mold opening method for pipe joint injection mold
  • Mold opening method for pipe joint injection mold
  • Mold opening method for pipe joint injection mold

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Embodiment Construction

[0020] The present invention will be described in detail in conjunction with accompanying drawing now. This figure is a simplified schematic diagram only illustrating the basic structure of the present invention in a schematic manner, so it only shows the components relevant to the present invention.

[0021] Such as figure 2 and image 3 As shown, an injection mold for a pipe joint of the present invention includes an upper mold, a lower mold and a mandrel assembly 100, a cavity matching the shape of the pipe joint 200 is formed between the upper mold and the lower mold, and the mandrel assembly 100 includes the first A type cover 1, a first lower core 2, a second type cover 3, a second lower core 4 and a bent mandrel 5, the first type cover 1 and the first lower core 2 are aligned up and down, and the One end of the bent mandrel 5 has a first concave surface 5-1 matching the outer wall of the first lower core 2, and the first lower core 2 leans against the inside of the f...

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PUM

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Abstract

The invention provides a mold opening method for a pipe joint injection mold. The mold opening method includes the step of mandrel assembly drawing and specifically includes the following steps that a first sleeve and a second sleeve are drawn down from the upper portion of an injection molding pipe joint; a first lower core and a second lower core are drawn out of the lower portion of the injection molding pipe joint; and a bent core rod is rotated out of an inner hole of a pipe joint formed by the second sleeve. According to the mold opening method for the pipe joint injection mold, the bent core rod is adopted for a mandrel assembly, the manner of rotating the bent core rod out of a connection pipe subjected to injection molding is adopted during drawing, and therefore the H-shaped connection pipe is obtained through the injection molding integral-forming processing technology, and a new thought is provided for injection mold opening.

Description

technical field [0001] The invention relates to the technical field of molds for connecting pipe fittings, in particular to a mold opening method for injection molds of pipe joints. Background technique [0002] With the improvement of people's living standards, the level of housing technology is also constantly humanized. In order to save land, there are more and more high-rise buildings, especially the use of plastic pipes in toilets will generate noise. Such as figure 1 As shown, the traditional H-type 45° oblique straight pipe cannot be directly produced by mold injection molding, because the mandrel needs to be inserted inside the pipe during injection molding. If it is an oblique straight pipe, it needs to Pull the mandrel outward along the straight extension direction of the tube. Since the extension direction is blocked by the main pipe wall, the mandrel cannot be taken out. The arrow indicates the pulling direction of the mandrel, and the dotted line indicates the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C45/33B29C45/40B29L31/24
CPCB29C45/332B29C45/40B29L2031/24
Inventor 周佰兴周敏宏周敏伟周敏飞
Owner JIANGSU HIPPO PLASTICS
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