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Guide-post-free mold

A mold and guide post technology, applied in the field of non-guide post molds, can solve the problems of shortening the service life of the mold, reducing the positioning accuracy of the mold, increasing the cost of the mold, etc., to improve the precision and life, reduce the external size, and stabilize the production process. Effect

Inactive Publication Date: 2014-03-26
SHANGHAI YONGXING PLASTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is no problem for small and medium injection molds, but if it is a large mold and the thickness of the mold is very thick, the diameter of the guide post is very large and very long
In this way, there are the following problems: the diameter of the guide post is large, the shape of the mold will increase accordingly, and the cost of the mold will increase accordingly, and the tonnage of the injection molding machine will also increase accordingly, so the cost of injection molding will also increase accordingly
In addition, the cooperation between the guide post and the guide sleeve with a large diameter requires a larger gap, and the positioning accuracy of the mold will decrease.
The service life of the mold is shortened, and the plastic products produced are prone to burrs and flashes

Method used

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Examples

Experimental program
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Effect test

Embodiment

[0021] Such as Figure 1-3 As shown, a mold without guide pillars includes A plate 3 and B plate 4, the top of A plate 3 is fixed on the I-shaped plate 1 through the splitter plate 2 to form an upper mold, and the lower mold includes B plate 4, square iron 5, bottom plate 8. The face needle plate 6 and the bottom needle plate 7, and the B plate 4 are fixed on the bottom plate 8 through the square iron 5 arranged under the four corners of the bottom, and the bottom needle plate 7 and the face needle are arranged in turn between the bottom plate 8 and the B plate 4 board6.

[0022] The B plate 4 is square, and its surrounding sides are respectively provided with a positioning in-line block 10, the in-line block 10 is a positioning square iron, and the material is a carburized SUJ2 iron block, and its lower end is fixed on the B plate by a screw M2012 4, the upper end extends upwards, and the extended length matches the height of the A plate 3; each in-line block 10 is provided ...

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Abstract

The invention relates to a guide-post-free mold which comprises an upper mold and a lower mold, wherein the circumferential side surface of the lower mold is provided with a direct insert for locating; the direct insert is provided with a wear-resistant block; the lower end of the direct insert is fixed to the lower mold, and the upper end extends upwards; and when the upper mold and the lower mold are closed or opened, the direct insert is used for guiding or locating. Compared with the prior art, the mold has the advantages of compact structure, high stability, long service life and the like, and is convenient for maintenance.

Description

technical field [0001] The invention relates to a mold, in particular to a mold without a guide post. Background technique [0002] At present, the injection molds all use guide pillars and guide sleeves to position and close the mold. This is no problem for small and medium injection molds, but if it is a large mold and the thickness of the mold is very thick, the diameter of the guide post is very large and very long. In this way, there are the following problems: the diameter of the guide post is large, the shape of the mold will be enlarged accordingly, and the cost of the mold will be increased accordingly, and the tonnage of the injection molding machine will be increased accordingly, so the cost of injection molding will also increase accordingly. In addition, the cooperation between the guide post and the guide sleeve with a large diameter requires a larger gap, and the positioning accuracy of the mold will decrease. As a result, the service life of the mold is sho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C45/26B29C33/30
CPCB29C45/2606
Inventor 宋志剑
Owner SHANGHAI YONGXING PLASTICS
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