SU1364490A1 - Method and apparatus for making casings from composition material - Google Patents

Abstract

The invention relates to the processing of polymer composites by the method of winding and can be used in various sectors of the national economy in the manufacture of Vras, eni shells. The aim of the invention is to improve the quality of products. The method of manufacturing shells made of composite material consists in obtaining a non-woven tape by winding longitudinal threads (H) 13, 14 transverse 7, and the coils of the latter are formed with a variable tension, the value of which, when applied to the surface of the mandrel 2, is greater than its size when it bends around the extreme longitudinal H 13, 14 tape. The implementation method of the device comprises a swivel 4, a mandrel 2 and a fixed cam 11, which is mounted with the possibility of contact with a spring-loaded, radially displaced comb 10, changing the yoke tension of the transverse H 7 together with the fixed comb 8 mounted on the swivel 4. Using The invention allows to create a symmetrical and stable structure of the product, to improve the quality and strength of the product. 2 sec. and 1 3. p. f-ly, 2 ill. cl

Description

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The invention relates to the processing of polymer composites by the method of winding and can be used by B-various industries of the national economy in the manufacture of shells of revolution.

The aim of the invention is to improve the quality of products.

FIG. 1 shows a device for carrying out the method; general view; in fig. 2 shows section A-A in FIG. one.

A method for manufacturing shells of a composite material is that in the process of winding a nonwoven tape on a mandrel, it is nonwoven. the tape is produced by winding the longitudinal threads with transverse windings, and the turns of the transverse threads of the tape are formed on longitudinal with variable tension, the value of which, when the threads are applied to the surface of the mandrel, is greater than its size when it bends around the extreme longitudinal threads of the tape.

A device for winding shells made of composite material comprises a mandrel 2 mounted on a supporting base I and a swivel 4 forming a tape 3 with spools 5 and 6 cross threads 7 thread guides, between which transverse threads 7 are mounted, made as fixed on a swivel 4 of the comb 8 and the spring 9 of the second comb 10 spring-loaded in the radial direction relative to it, which is installed with the possibility of contact with the fixed copier 11 mounted on the base 1, the composition th with offset cams 12 mounted movably in the circumferential and radial directions vert- Lyugai 4.

When feeding, the longitudinal threads 13 and 14 freely pass through the central opening 15 of the swivel 4.

The transverse yarns 7 pass through the thread guides 6 and the dies 8 and 10. After the yarns 13, 14 and 7 are attached to the mandrel 2, the device is ready for operation.

The device works as follows.

When the mandrel 2 and the swivel 4 rotates, the windings of the threads 13 and 14 are respectively wound on the mandrel 2 with simultaneous winding of the transverse threads 7 on them to form a ribbon.

When winding, the turns of the transverse threads 7 are formed on the longitudinal threads 13 and 14 with a variable tension on the surface of the mandrel. In this case, the variable tensioning of the transverse yarns 7 is achieved by using a fixed cam 1 L, with which spring-loaded spring-loaded arms having a radial movement of the comb 10 are in constant contact. The profile of the copier 11 is set when the offset cams 12 are installed;

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movements when shifting in the circumferential and radial directions.

When rounding the transverse thread 7 with one of the extreme threads 13 or 14, the tension of the thread 7 is minimal.

When the threads of the thread 7 are fixed on the surface of the mandrel 2 between the extreme threads 13 and 14, the tension of the thread 7 increases to the maximum. The tension impulse of the thread 7 is obtained from the action of the projections of the copier 11, in this device the cams 12, on the spring-loaded movable comb 10, which, moving relative to the comb 8, lengthens the path of the transverse filaments 7, and since there is no excess material, they are elastic tension within specified limits. After the protrusion cam 12 of the copier passes through And the movable comb 10 returns to its original position and the tension of the transverse threads 7 drops to the initial one. Thus, the winding cycle with the tension control of the transverse threads when laying on the mandrel is repeated.

The use of the method and device makes it possible to create a symmetrical and stable structure of the wound product, which increases the quality of the shell produced.

Claims (3)

1. A method of manufacturing shells made of a composite material, including the production of a tape by winding longitudinal threads with transverse windings, winding the obtained non-woven tape onto a mandrel, and curing, characterized in that, in order to improve the quality of the products, the turns of the transverse threads of the tape are formed on longitudinal with variable tension , the value of which when applied to the surface of the mandrel is larger than its size when it bends around the extreme longitudinal threads of the tape. 2. A device for the manufacture of shells made of a composite material, containing a mandrel mounted on the base and a tape-forming swivel with yarns and cross-thread guides, characterized in that, in order to improve the quality of the products, it is equipped with transverse tensioners installed between the thread-guides. threads made in the form of a first comb fixed on the swivel and a second comb spring-loaded in the radial direction relative to it, which is installed to be in contact with ontirovannym based on the fixed cam. 3. The device according to claim 2, characterized in that the copier is made composite with offset cams mounted to move in circumferential and radial directions. 77 (Pi / r. 2