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Bundle of roving yarns, method of manufacturing a bundle of roving yarns and method for manufacturing a work piece

A thick yarn and yarn technology, applied in the field of manufacturing workpieces, can solve the problems of multi-labor and high cost of final products, and achieve the effects of rapid productivity, improved orientation of linear fibers, and rapid impregnation.

Inactive Publication Date: 2012-10-24
SIEMENS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This requires more labor and results in a high cost of the final product

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Bundle of roving yarns, method of manufacturing a bundle of roving yarns and method for manufacturing a work piece
  • Bundle of roving yarns, method of manufacturing a bundle of roving yarns and method for manufacturing a work piece
  • Bundle of roving yarns, method of manufacturing a bundle of roving yarns and method for manufacturing a work piece

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Embodiment Construction

[0040] now refer to Figure 1-6 A first embodiment of the present invention will be described. figure 1 The method of the present invention for producing a roving bundle is schematically shown. A plurality of roving yarns 1 and a central resin flowing yarn 2 are assembled into a roving bundle 5 by means of a winding device 4 . The additional winding yarn 3 is wound circumferentially around a roving bundle 5 by means of a winding device 4 .

[0041] The rovings 1 may comprise glass fibres, carbon fibres, basalt fibres, aramid fibers or natural fibers, for example fibers from wood or plants. Roving yarn 1 comprises longitudinal unidirectional reinforcing fibers. The bundle 5 preferably comprises at least 10, advantageously 10-100 roving yarns 1 . The wrapping yarn 3 may advantageously be an elastic yarn. This causes the bundles 5 to change their circular shape when placed in the mould, allowing all the bundles 5 to fit without air gaps between the bundles. However, it is c...

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PUM

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Abstract

A method of manufacturing a bundle (5) of roving yarns (1) is described. The method is characterised in assembling a number of roving yarns (1) of longitudinal unidirectional fibres and an additional component (2, 36) in a bundle (5). For example, at least one resin distribution means (2) or a thermoplastic material (36) can be placed as the additional component (2, 36) in the bundle (5).

Description

technical field [0001] The present invention relates to a method for producing a roving bundle, a roving bundle and the use of such a roving bundle. The invention further relates to a method of manufacturing a workpiece, such as a wind turbine rotor blade, and to the workpiece. Background technique [0002] Fiber-reinforced plastic composites are used in various technical products such as automobiles, wind turbine blades, storage tanks, and more. Most large-scale products, such as wind turbine blades, are manufactured by placing glass fabric conveyed on rollers in one or more moulds. In a common resin injection molding process known as vacuum assisted resin transfer molding (VARTM), the mold is closed and a vacuum is applied to the closed mold system. A resin, such as polyester, epoxy, vinyl ester or other resin, is then injected into the mold cavity, thus filling the voids between the fibers in the laminate. In load-bearing structures, unidirectional glass fabrics are us...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/44B29C70/54B29B11/00B29B11/06B29L31/08
CPCB29B15/122B29C70/547B29C70/48B29C70/20B29B15/12Y02E10/74D02G3/402D02G3/36D02G3/02D06M15/00
Inventor E.格罗韦-尼尔森
Owner SIEMENS AG
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