SU710829A1 - Continuous glass strip for making glass-plastic adhesive-bound tubes - Google Patents

Description

one

The invention relates to the production of glued fiberglass pipes with an oblique wall structure. Such pipes are used in the chemical, shipbuilding, rocket and other areas of technology.

It is known that pre-impregnated glass tape of oblique structure or knitted braid tape is used to manufacture fiberglass pipes with oblique wall structure, which allows the tape to be deformed during the winding onto the mandrel so that one of its edges forms the inner surface of the pipe and the other - outer . tape form a conical surface.

However, the use of such glass tapes in the production of fiberglass pipes with an oblique structure does not make it possible to create the necessary forming pressure in the process of winding the tape tension.

Flat, continuous, impregnated with binder and hardened glass tapes do not allow to form an oblique structure of the pipe.

since their deformation in the longitudinal direction is limited.

The purpose of the invention is to improve the quality

glued pipes.

This goal of the present invention is achieved by making a preformed impregnated binder glass fiber and curing it in the form of a scalloped ribbon. At the same time, one of its edges remains straight, and the other has a wave-like shape, the ratio of edge lengths equal to the ratio of the inside and outside diameter of the pipe made from the tape.

Claims (1)

The longitudinal forming scalloped ribbons have different lengths, with the ribbon being formed with such an arrow, the waves forming that each of them, when wound, forms in the pipe the surface of one particular diameter. So the straight edge of the tape forms the inner surface of the pipe, and the curvilinear - the outer. That is, the proposed tape is a spatial continuous sweep of a truncated cone, with an edge forming a smaller base. 3 is straight and the larger base is formed in the form of a wave. The high rigidity of each of the forming cured tape in the longitudinal direction allows creating the necessary shaping pressure by technological tension of the glass tape when the pipe is wound. The fabrication of a tube from a continuous cured scalloped tape is made by gluing layers of wound tape to the mandrel. FIG. Figure 1 shows the design of a continuous tape; see 2dans acrrnrmitr Kho image of a continuous profiled tape; in fig. 3 shows a pressing device for glass oleites. Sample production scalloped ribbon. Impregnated with thermosetting binder and hardened glass ribbon of the scalloped form we are made from oblique impregnated with binder glass tape by forming it by pressing in the tool and simultaneously curing the binding tape in the specified tool. Description of the device and its work. The fixture is a multi-stamp, the working surfaces of which repeat the shape of the scalloped tape. The working surfaces of the die and the punch must have a temperature sufficient to cure the bonding tape during the production of the tape. The molding of the ribbon is carried out in the zone of the first wave (first stream) of the matrix, after which the punch is lifted and the belt is moved in adaptive mode to the other wave of the wave, at the same time, the newly taken straight festoon moves to the second stream of the matrix. The speed of transfer of the tape in the fixture must ensure curing of the bonding tape. The described method of production of scalloped tape is easily automated. The use of a glass tape impregnated with a binder and a festooned festooned form and the manufacture of fiberglass laminated pipes with an oblique structure ensures: accurate geometry of the oblique structure of the pipe wall due to the shape of a truncated cone fixed in the ribbon; creating the forming pressure in the process of winding the product by stretching the tape, since in the cured state it has sufficient rigidity and strength along the generators, and the shape of the tape allows for oblique packing of the tape when winding the product without deforming it. Consequently, an increase in the quality of the pipe is ensured by precisely observing the geometry of the reinforcement of the products and creating a sufficient formation pressure. Claims of the Invention Continuous glass tape for the manufacture of fiberglass glued tubes with a skew structure, made of glass fibers impregnated with a thermosetting binder, characterized in that, in order to improve the quality of glued tubes, it is made in the form of a hardened scalloping tape which has one the edge is rectilinear, and the other has a wave-like shape when the splitting of the lengths of the edges is equal to the ratio of the inner and outer diameter of the pipe made from the tape. Sources of information taken into account in the examination 1. Patent of Germany No. 1504586, cl. 39, published 1974. f yj M / my ///// /, Iveos eta treadan mt tape i 5 w i vvifx j; wy / ij: Fig. 3 OmSefoKdewaf service. tape,.,. . trice