Device for producing moulded pieces from fibrous material

A fiber material and molding technology, which is applied in the field of devices for manufacturing moldings from fiber materials, can solve the problems of difficulty in uniform filling of molds, restrictions on the mobility of blowing pipes, and the like

Active Publication Date: 2010-10-06
ROBERT BURKE GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] This method is only suitable for hollow bodies which are open at one end so that the blow-in tube can be arranged there
Furthermore, the mobility of the blow-in ...

Method used

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  • Device for producing moulded pieces from fibrous material
  • Device for producing moulded pieces from fibrous material
  • Device for producing moulded pieces from fibrous material

Examples

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Embodiment Construction

[0034] exist figure 1 In FIG. 2 , a mold can be seen comprising an upper mold 1 and a lower mold 2 assembled such that their inner sides 1 a and 2 a towards each other form a closed intermediate chamber 3 . Said intermediate chamber already defines the contour of the three-dimensional shaped part to be produced; however, it is advantageous that the upper mold 1 and the lower mold 2 are first used to produce a parison, which is then compacted by another upper mold into The final molded part. The insides 1a and 2a of the moulds are generally perforated in a screen-like manner so that the air flow loaded / carrying the synthetic fibres, which flows laterally into the intermediate chamber 3, can escape from the intermediate chamber 3, while the fibers accumulate in the center in the room. In this case, the air permeability of the inner walls 1 a and 2 a can be locally different in order to be able to vary the fiber filling, ie the fiber density, in the intermediate chamber 3 .

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Abstract

The invention relates to a device for producing three-dimensional moulded pieces (30) from fibrous material, using a multi-part mould (1, 2), the inner side (1 a, 2a) of which at least partly defines the shape of the moulded piece, wherein the fibres are blown in to the mould by means of an airflow through at least one nozzle (4) and the airflow then escapes through openings in the mould such that the fibres build up on the inside of the mould, whereupon the fibres are optionally compressed in-situ before adhering to each other by means of heating and removed as a moulded piece (30) from the mould (1, 2). The essence of the invention is characterised in that the jet direction of the nozzle (4, 24, 34) is pivotable and the pivot axis runs close to the outer side of the moulded piece.

Description

technical field [0001] The invention relates to a device for producing a three-dimensional molded part from fiber material using a multi-part mold, the inside of which at least partially defines the contour of the molded part, wherein the fibers are blown by an air flow via at least one nozzle Blowing into the mold and then escaping through the opening of the mould, so that the fibers accumulate on the inside of the mould, the fibers are then optionally compacted locally, after which the fibers are bonded to each other by the heat input, finally as The molded part is removed from the mold. Background technique [0002] A device of this type is known from DE 103 24 735 . The content of said documents also becomes the subject of the present application in order to avoid repetitions. [0003] Furthermore, it is known from DE 2318501 to produce parisons during the production of hollow bodies from synthetic / plastic fibers, the machining being carried out by means of rotary perf...

Claims

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Application Information

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IPC IPC(8): B29B11/16B29C70/30D04H1/00
CPCD04H1/00B29B11/16Y10T428/24124
Inventor M·海因尔
Owner ROBERT BURKE GMBH
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