SU1353643A1 - Method of producing shells shaped as bodies of revolution from composite/fibrous material - Google Patents

Abstract

This invention relates to a process for the manufacture of shells made of composite fiber material by the winding method. The purpose of the invention is to simplify the winding process. Winding the shells onto the mandrel II allows you to get a non-woven tape of yarn 3 wrapping I with swivel I edge rovings 4 and 5 from the bobbin spool 7. Roving 4 and 5 with the help of combs 10 can be converted into a unidirectional tape. In this case, the threads 3 from a fixed swivel are placed into the composition of this tape, for which the threads 6 are distributed with an increase in their density from the edge of the tape to its middle, which ensures an equal-thickness tape. 2 Il. 1f (L 10 oo ate with O N 00

Description

The invention relates to a technology for the manufacture of shells made of composite fiber material by the winding method.

Objective I of the invention is to simplify the winding process.

FIG. 1 shows a winding scheme with a nonwoven tape; in fig. 2 is a scheme for winding with a one-direction tape with a tape converted from.

In the manufacture of the shell, the density is realized by an even density distribution across the width of the tape, when a unidirectional structure is formed from both filaments 6 and filaments 3, that is, with a higher density at its edges. To compensate for this phenomenon and to obtain a uniform density of the unidirectional tape, the yarns 6 of the edge rovings are distributed with increasing their density from the edge of the tape to its middle.

For uniform density

the formation of a flat reinforcement tape, 10 a unidirectional tape is possible after its impregnation with a binder, winding on a rotating mandrel and polymerization of the workpiece. The tape, depending on the structure of the product, can be non-woven or unidirectional.

Non-woven tape is formed when turning

Institute of swivel 1 with shpuli mi

9

from which

The yarns 3, the envelopes of the edge rovings 4 and 5, which are obtained by adding the yarns 6, which are undoed from the spool 7 and passing through the impregnation bath 8, are wound up. The yarns 6 and 6 are added and decomposed by means of combs a layer of non-woven tape, the swivel i is stopped and the threads are redistributed 6

20

Tanova swivel I yarn 3, unwound from its shpuhl 2, shift the spreadsheet 12 to the axis of the swivel 1.

The use of the invention simplifies the process of winding shells from both non-woven and unidirectional tapes.

Claims (1)

Invention Formula A method of manufacturing shells of rotation from a commanding fiber material, which includes winding a nonwoven tape from a mandrel from transverse rovings passing through a ring swivel, and longitudinal threads laid on a roving in a spiral as the swivel rotates alternating with along the 1pirine of the ribbon by turning the combs on the winding of the unidirectional ribbon, forming 9 and 10. This forms a unidirectional ribbon that is wound on the mandrel 1 1 to obtain the desired thickness of the toothed layer. At the end of the annular winding, the unidirectional tape can be transformed again into a nonwoven web for winding other layers or the next article. Since the rollers 2 of the swivel 1 are located along the circumference of its disk, when it is stopped, the threads 3 unwind a bath of transverse rovings by redistributing their threads in one plane using guide elements with a fixed swivel, characterized in that, in order to simplify the winding process, when forming a unidirectional tape, longitudinal threads from the swivel are introduced into its composition, and the threads of the roving at This is distributed with increasing tape density from edges to its middle. number density distribution across the width of the tape in the formation of a unidirectional structure of both threads 6 and of threads 3, i.e., with greater density at its edges. To compensate for this phenomenon and to obtain a uniform density of the unidirectional tape, the yarns 6 of the edge rovings are distributed with increasing their density from the edge of the tape to its middle. For uniform density  unidirectional tape possible after os Tanova swivel I yarn 3, unwound from its shpuhl 2, shift the spreadsheet 12 to the axis of the swivel 1. The use of the invention simplifies the process of winding shells from both non-woven and unidirectional tapes. Invention Formula A method of manufacturing shells of rotation from a commanding fiber material, which includes winding a nonwoven tape from a mandrel from transverse rovings passing through a ring swivel, and longitudinal threads laid on a roving in a spiral as the swivel rotates alternating with unidirectional tape winding, pattern a bath of transverse rovings by redistributing their threads in one plane using guide elements with a fixed swivel, characterized in that, in order to simplify the winding process, when forming a unidirectional tape, longitudinal threads from the swivel are introduced into its composition, and the threads of the roving at This is distributed with increasing tape density from edges to its middle. 1Z ten Phage2 Editor G. Volkova Order 5316/16 Compiled by M. Osipova Tehred I. VeresKorrektor V. Butt ha Circulation 565 Subscription VNIIPI USSR State Committee for Inventions and Discoveries 113035, Moscow, Zh-35, Raushsk nab. 4/5 Production and printing company, Uzhgorod, ul. Proektna, 4