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Venting device

A technology of exhaust device and air, which is applied in the field of injection mold and exhaust device

Inactive Publication Date: 2013-04-03
TAKATA PETRI AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this respect, there is the problem that the injection molding material escapes from the exhaust opening together with the air to be released

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0046] figure 1 combine figure 2 with image 3 Shown is a cross-sectional view of a venting device 1 for venting a cavity I of an injection mold F through a venting opening O of the injection mold F, said cavity I being surrounded by the injection mold F, the venting device 1 Air can be expelled from the cavity I to the outer space A around the injection mold F.

[0047] The venting device 1 has a housing G serving as a support for the venting mechanism, which housing G is designed and intended for fastening to the injection mold F to be vented. The housing G is designed to extend longitudinally in the direction of extension R and has a wall 30 extending in the direction of extension R between the bottom 3 and the upper side 15 of the housing G, the bottom 3 being designed for attachment in an injection mold Extends at F and transversely to the direction of extension R, and the upper side 15 extends transversely to the direction of extension R. The wall 30 can be designed...

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PUM

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Abstract

A venting device for venting a cavity of an injection mold via a venting opening of the injection mold which cavity can be filled with an injection molding material is provided. The venting device comprising a housing which has a through-opening and is designed and intended for an arrangement on an injection mold in such a way that air which is present in the cavity and which escapes from a venting opening of the injection mold when injection molding material is introduced into the cavity can exhaust through the through-opening of the housing into an exterior space surrounding the injection mold. A valve pin extending longitudinally along a direction of extent and being mounted in the housing movably along its direction of extent. The valve pin is designed for being moved from a venting position, in the direction of the cavity into a first cleaning position.

Description

technical field [0001] The invention relates to a venting device for an injection mold, in particular a foam mold for a steering wheel, and a method for venting such an injection mold. Background technique [0002] If injection molding material is introduced into the cavity of an injection mold to produce a shaped part, the air present in the cavity and replaced by the injection molding material must be released from the cavity through at least one vent opening of the injection mold, through which The opening communicates the cavity with the external space around the injection mold. In this respect, there is the problem that the injection molding material escapes from the vent opening together with the air to be released. This flash must be removed after the injection molded material has cured. [0003] A venting device is known from FR 2857898 in which a piston with play is guided in the case of a chamber with a venting opening or a plurality of venting openings. In the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C45/34B29C44/34
CPCB29L2031/3047B29C44/588B29C45/34Y10S425/812
Inventor 拉尔夫·利布曼
Owner TAKATA PETRI AG