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Die gap gas-aid ejection pin mechanism

A technology of clearance gas and thimble, which is applied in the field of mold accessories to reduce deformation

Inactive Publication Date: 2012-02-01
NISSIN EDUCATION PROD KUNSHAN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the above problems, the present invention provides a mold gap gas-assisted thimble mechanism, which can solve the vacuum problem when most molds are demolded, so that the product can be ejected smoothly, and the product can be greatly reduced. Deformation caused by excessive force

Method used

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  • Die gap gas-aid ejection pin mechanism

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Embodiment

[0013] Embodiment: A mold gap gas-assisted thimble mechanism, the middle part of the mold core 1 is provided with a thimble groove penetrating up and down, and a gap gas-assisted thimble 2 is interspersed in the thimble groove. There is a gap 3 between the outer surface of the middle part of the air-assisted thimble in the gap and the inner surface of the thimble groove. Gas channel 4, one end of the gas channel communicates with the outside and the other end communicates with the gap 3, external compressed gas can pass through the gas channel, the diameter of the lower part of the gas-assisted thimble 2 in the gap is larger than the middle diameter, so The lower part of the gap gas-assisted thimble closely fits the thimble groove, and when the gap gas-assisted thimble 2 is ejected, the gas channel 4 , the gap 3 and the ejection surface of the product 5 communicate with each other. The middle part of the gap gas-assisted thimble of the present invention is processed so that th...

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Abstract

The invention discloses a die gap gas-aid ejection pin mechanism. The middle part of a die core is provided with a vertically penetrating ejection pin groove. A gap gas-aid ejection pin is inserted through the ejection pin groove. A gap exists between the middle part of the gap gas-aid ejection pin and the ejection pin groove of the die core. A gas channel is arranged in the die core. One end of the gas channel communicates with the exterior side, and the other end of the gas channel communicates with the gap. Therefore, exterior compressed gas can enter the gap through the gas channel. At the moment when the gap gas-aid ejection pin is ejected, the compressed gas is quickly led from the gap to the place between a product ejection surface and the die core, such that the vacuum state of the product ejection surface is released, and the product can be successfully ejected from the die. With the mechanism, product deformations caused by excessive ejection forces are greatly reduced.

Description

technical field [0001] The invention relates to a mold accessory, in particular to a thimble mechanism capable of smoothly ejecting and demoulding plastic products. Background technique [0002] The thimble is an accessory of the plastic mold. It is used in the plastic mold. The thimble can also be called a push rod, an inlay needle, a middle needle, a support needle, etc. In the mold, the thimble is used to separate the plastic product from the mold. [0003] However, when the plastic product is formed, the inside of the mold is a vacuum. Because the product is affected by the vacuum, it is difficult for the ejector pin to eject it smoothly. When the ejector force of the ejector pin is too large, it is easy to cause deformation of the plastic product. Contents of the invention [0004] In order to solve the above problems, the present invention provides a mold gap gas-assisted thimble mechanism, which can solve the vacuum problem when most molds are demolded, so that the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C33/44
Inventor 孙皓鲍晓东李鹏
Owner NISSIN EDUCATION PROD KUNSHAN CO LTD
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