An injection mold without draft and an injection molding method using the same

A technology of injection mold and draft angle, which is applied in the direction of coating, etc., can solve the problems of enlargement, mold cost and injection molding cost, and long mold production cycle, so as to shorten the manufacturing cycle, simple and reasonable structure, and shrink the mold effect of size

Inactive Publication Date: 2011-12-28
毅昌金型(东莞)五金制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the size of the mold must be increased, and correspondingly, a large injection molding machine is required to put the mold in, which will lead to a long mold production cycle, and the cost of the mold and injection molding will increase

Method used

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  • An injection mold without draft and an injection molding method using the same
  • An injection mold without draft and an injection molding method using the same
  • An injection mold without draft and an injection molding method using the same

Examples

Experimental program
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Effect test

Embodiment 1

[0029] Such as figure 1 with figure 2 As shown, in this embodiment, an injection mold without draft angle includes a fixed mold overall 1 and a movable mold overall 2, and the fixed mold overall 1 includes a fixed template and a fixed mold cavity 3, and the fixed mold cavity 3 is set on the fixed template, and the fixed template is provided with guide post holes, and the movable mold overall 2 includes a movable template, a movable mold core 4 and an ejection system, and the movable mold core 4 is set on the movable template Above, the movable template is provided with a guide post, and the guide post is matched with the guide post hole, and the ejection system includes a push block 5 that can push out the product as a whole in a balanced manner, and the fixed mold cavity 3 and Steam flow passages are provided around the movable mold core 4, and the steam flow passages can transfer heat to the movable mold core 4 and the fixed mold cavity 3, so that the products in the cavit...

Embodiment 2

[0035] Embodiment two, such as figure 1 with figure 2 Shown, a kind of injection molding method of the injection mold without draft, comprises the following steps:

[0036] a. Mold closing: make the movable mold core 4 and the fixed mold cavity 3 close the mold, that is, for the product with the straight extension position, the straight extension movable mold core 4 and the straight extension fixed mold cavity 3 matching the straight extension position are set, and then the straight extension movable mold Core 4 and straight stretch fixed mold cavity 3 are closed;

[0037] b. Glue injection: inject glue into the mold cavity after mold closing, that is, inject glue into the mold cavity after the mold closing of the straight-stretching movable mold core 4 and the straight-stretch fixed mold cavity 3;

[0038] c. Heating: While injecting glue into the mold cavity after closing the mold, inject steam into the fixed mold cavity 3 and the movable mold core 4 to heat rapidly, and ...

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Abstract

The invention relates to the technical field of injection mold equipment, in particular to an injection mold without a draft and an injection molding method using the mold, an injection mold without a draft, the ejection system includes a push block, and the fixed There are steam flow passages around the mold cavity and the movable mold core. Through the steam flow passage, the movable mold core and the fixed mold cavity can be rapidly heated and cooled during mold closing and injection molding. The overall balanced and non-inclined ejection reduces the size of the original mold; an injection molding method for an injection mold without a draft, through the clamping and injection of the movable mold core and the fixed mold cavity with steam channels all around glue, heating, cooling, and mold opening, the product is heated rapidly first, and when the product is formed, it is in the process of holding pressure, and the fixed mold cavity and the movable mold core are rapidly cooled at the same time, which can reduce the production cost of the mold and avoid the product from being out of the mold If the slope is too small, the product will be whitened or stick to the mold, or if the angle is too large, the appearance and assembly will be affected.

Description

technical field [0001] The invention relates to the technical field of injection mold equipment, in particular to an injection mold without draft angle and an injection molding method using the mold. Background technique [0002] At present, in the traditional injection molding process, the product must be designed with a certain mold slope (the higher the product, the larger the slope) to achieve the injection molding of the product, so that after the product is injected, when the mold is opened, use Only when the product can stay on the moving mold can the product be ejected. If the slope of the mold is too small, the product will stick to the fixed mold when the mold is opened, which will make it inconvenient to take out the product and scratch the product, which will affect the appearance of the product, or it will be difficult to eject the product, and it will easily whiten the product surface , resulting in a higher scrap rate. [0003] In order to solve the above-me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C45/26B29C45/00B29C45/73B29C45/40
Inventor 陈锦华曾秋文冯仕煌邓贵华
Owner 毅昌金型(东莞)五金制品有限公司
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