SU1388310A1 - Apparatus for continuous manufacturing of tubing of reinforced plastics - Google Patents

Abstract

The invention relates to equipment for the production of tubular products. The purpose of the invention is to increase productivity by lengthening the working part of the cantilever mandrel. The device comprises a frame, pillars 4, on which a self-feeding jib 3 is mounted and a support, covering its free end. The support includes a holder 5, which is mounted eccentrically to the axis of the mandrel 3 and fixed in bearings 6, the outer rings 16 of which are held by turning the arms in their housings 7 with retainers. The yoke, by means of the rolling bodies 10, is associated with four movable sectors, which together form the cylindrical surface that surrounds the mandrel 3 and contacts in the lower zone with the shaped pipe. The sub-sector sectors are held in the state corresponding to the inner cylindrical surface by means of rolling elements 11 and alternately contact with an abutment fixed by latches on the rack 4 in the zone of no contact between the pipe and the moving sectors. 3 il. S (l

Description

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The invention relates to equipment for the manufacture of articles made of composite materials by the method of non-elastic winding, namely, devices for the manufacture of tubular articles made of reinforced plastics.

The aim of the invention is to increase productivity by lengthening the working part of the cantilever mandrel.

FIG. 1 shows the device a general view; in fig. 2 is a view A of FIG. one; in fig. 3 shows the node I in FIG. 2 (coupling of the holder with moving sectors).

The device contains a frame 1,

the bearings 2 of the self-feeding cantilever mandrel 3 and the pillars 4 with the support, made in the form of the holder 5, mounted in the bearings 6, the outer rings of which are kept from turning in the bodies 7 by the fasteners 8 are mounted. The holder 5 by means of four rolling bodies 9 by sectors 10, which together form a cylindrical surface that encompasses the mandrel 3 and is in contact with the forming pipe in the lower zone and is located eccentrically relative to the axis of the mandrel 3. Sectors 10 are interconnected through bodies 11 ka periodically and in contact with an anvil 12 fixed by retainers 9 on a rack 4 in the gap between the pipe and moving sections 10, the device is equipped with a binder supply unit 13, a reinforcing material stacker 14 and a heater 15.

The device works as follows.

The binder self-feeding mandrel 3 rotating in bearings 2 is supplied from the binder supply unit 13 and from the stacker 14 reinforcing material, forming a pipe (which is partially cured by the action of heater 15), continuously moving down from the mandrel 3 and thus making a complex screw-shaped movement about its axis. The design of the mandrel is not significant in this case, since any cantilever self-feeding mandrel can be used.

The pipe being molded on the mandrel 3 is spiraled to the inner surface formed by the moving sectors 10, and due to the frictional forces arising

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between the pipe and moving sectors 10, carries them along, i.e. forces them to perform both rotational movement around the support axis and translational movement along the axis of the mandrel 3. The rotational movement of the moving sectors 10 is provided by rotating the inner ring of the bearings 6 with the yoke 5 relative to the outer rings 16 bearings fixedly mounted in the housing 7 by clamps 8,. Upon contact with the pipe, the translational movement of the moving sectors 10 is carried out by means of the rolling bodies 9 and 11 and stops after leaving the zone of contact with the moldable pipe. In this case, the moving sectors 10 collide against the stop 12 and return to their initial position under its influence. Further, the cycle of operation of the mobile sectors of the support 10 together with the forming pipe is repeated with the frequency of rotation of the mandrel 3.

Depending on the technological process, a pipe can be formed, in the zone of contact with the support surface it can be brought to a different degree of cure.

The introduction of the support allows an increase in the productivity of the device for the continuous manufacture of chemically resistant pipes.

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mula of invention

A device for the continuous manufacture of pipes made of reinforced plastics, comprising a cantilever rotating mandrel mounted on a frame with means of transportation. the product, a reinforcing material stacker, a binder supply unit and polymerization chambers, characterized in that, in order to increase productivity by lengthening the working part of the cantilever mandrel, it is equipped with an additional support mounted eccentrically on its axis at the end of the mandrel. the form of a rotatably mounted cage in which sectors are located through the rolling bodies with the formation of a cylindrical surface for mating with the bottom surface of the product, and placed in the upper part of the cage area of contact with the stop sectors.

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Claims (1)

Claim A device for the continuous manufacture of pipes made of reinforced plastics, including a cantilever rotating mandrel mounted on a bed with means of transportation. products, stacker of reinforcing material, binder feed unit and polymerization chambers, characterized in that, in order to increase productivity by lengthening the working part of the cantilever mandrel, it is equipped with an additional support mounted on the end of the mandrel eccentrically to its axis, made in the form of a mounted with the possibility of rotation of the cage, in which sectors are arranged through the rolling bodies to form a cylindrical surface for interfacing with the lower surface of the product, and placed in the upper part of the cage in not contact with sectors of emphasis. Suffa