RU2376137C1 - Burnishing tool for assembling and curing of angular high-pressure hoses - Google Patents

Abstract

FIELD: machine building.

SUBSTANCE: invention relates to equipment for manufacturing of angular high-pressure hoses with termination. Technical result is achieved by burnishing tool for assembling and curing of angular high-pressure hoses. Additionally burnishing tool with cooking membrane is implemented as dismountable in the form of part of torus with cylindrical sections at ends and consists of rods, located by generatrix, ends of which are located in grooves of points and fixed by rings. Points are connected by threaded connection to central rod, located at axis of burnishing tool.

EFFECT: structure of dismountable burnishing tool with cooking membrane, providing implementation of assembling and curing of angular hose with termination and providing extraction of burnishing tool from angular hose after assembling and curing, even at presence of cylindrical (straight) sections of termination.

4 cl, 4 dwg

Description

The invention relates to mechanical engineering, in particular to equipment for the manufacture of high-pressure angular sleeves intended for use in ship pipeline systems.

A device for the manufacture of high pressure hoses (V. A. Lepetov. Rubber products. Chemistry, 1976, p.113, 123) in the form of a direct, flexible and smooth, non-separable mandrel made of steel or light alloys, which is used to produce only direct high pressure hoses without termination. After manufacturing a straight sleeve, the mandrel is removed, the vulcanized sleeve is cut into pieces of a certain length. Connect the end seal with the power frame of the sleeve. When mounted in a pipeline, the sleeve is forcibly bent.

The disadvantages of the known device are the impossibility of assembling and vulcanizing an angular sleeve with an end seal, the distortion during installation of the inner diameter of the sleeve of a relatively small length (kink of the sleeve) made on such a mandrel, the inability to provide internal pressing pressure for vulcanization of the angular sleeve.

The closest in technical essence and technical result achieved (prototype) is a support for rubber and rubber-like pipes and sleeves (US patent No. 3814565, NKI 425/392, issue 04.07.74), consisting of a metal spiral coated with a braid from at least two metal spirals, which, after assembling the straight sleeve, are mounted in the sleeve and deformed into the desired shape.

The disadvantages of the known device are the difficulty of removing the support due to the stiffness of the spring and the resulting friction between the inner layer of rubber of the sleeve with the metal of the support, the support device does not provide the ability to supply internal pressing pressure during vulcanization of the angular sleeve.

The technical result of the proposed invention is the design of a collapsible mandrel with a cooking diaphragm, having the form of a part of a torus with cylindrical sections at the ends, allowing assembly and vulcanization of an angular sleeve with an end seal. The design of the mandrel allows the vulcanization of the corner sleeve at a pressure of steam supplied to the inner cavity of the mandrel. The design ensures the removal of the mandrel from the corner sleeve after assembly and vulcanization even in the presence of cylindrical (straight) sections of the end seal.

The technical result is achieved by the fact that the mandrel with the cooking diaphragm is made collapsible in the form of a part of the torus with cylindrical sections at the ends and consists of rods arranged along the generators, the ends of which are placed in the grooves of the tips and fixed by rings, the tips are connected by a threaded connection to a central rod located on the axis of the mandrel. The ends of the cooking diaphragm are vulcanized to the tips to form a closed inner cavity of the mandrel. The vulcanization of the sleeve is carried out by the pressure of steam supplied to the inner cavity of the mandrel.

The invention is illustrated by drawings:

figure 1 is a General view of the mandrel with a cooking diaphragm for the assembly and vulcanization of angular high pressure hoses;

figure 2 - view a - end termination of the mandrel;

figure 3 - section B - the location of the rods in the mandrel during assembly and vulcanization;

figure 4 - removing the mandrel from the corner sleeve after vulcanization.

The mandrel with a cooking diaphragm is made collapsible in the form of a part of the torus with cylindrical sections at the ends and consists of rods 1 located along the generatrix, the ends of which are placed in the grooves of the tips 2 and fixed by rings 3, the tips are connected by a threaded connection to the central rod 4 located on the axis of the mandrel , and a cooking diaphragm 5, the ends of which are vulcanized to the tips to form a closed inner cavity of the mandrel.

The process of assembling a corner sleeve on a collapsible mandrel with a cooking diaphragm is as follows.

The mandrel is assembled, for which the tips 2 are connected by a threaded connection to the central rod 4, the rods 1 are placed in the grooves of the tips 2, the ends of which are fixed with rings 3, the surfaces for gluing the cooking diaphragm 5 are prepared on the tips 2, the cooking diaphragm 5 is assembled and vulcanized by steam pressure, fed into the inner cavity of the mandrel.

On the mandrel with a cooking diaphragm, an angular sleeve with end seal is assembled, the assembled sleeve together with the mandrel is mounted in the mold and cured by the pressure of steam supplied to the inner cavity of the mandrel. Remove the mandrel sleeve from the mold.

Disassembly and removal of the mandrel is carried out in the following sequence: tips 2 are disconnected by a threaded connection from the central rod 4, the cooking diaphragm 5 is cut off in the zones of the rings 3, the tips 2 and the central rod 4 are removed, then the rods 1 and the rest of the cooking diaphragm 5 are removed.

The company has positive experience in assembling high-quality high-pressure angular hoses with end seals on a collapsible mandrel with a cooking diaphragm and their operation in the piping system.

Claims (4)

1. The mandrel for the assembly and vulcanization of angular hoses of high pressure, characterized in that the mandrel with a cooking diaphragm is made collapsible in the form of a part of the torus with cylindrical sections at the ends and consists of rods arranged along generators, the ends of which are placed in the grooves of the tips and fixed by rings, the tips are threaded to a central shaft located on the axis of the mandrel. 2. The mandrel according to claim 1, characterized in that its design enables the mandrel to be removed from the corner sleeve after assembly and vulcanization even in the presence of cylindrical end seal portions. 3. The mandrel according to claim 1, characterized in that the ends of the cooking diaphragm are vulcanized to the tips to form a closed inner cavity of the mandrel. 4. The mandrel according to claim 1, characterized in that the sleeve is vulcanized by the pressure of steam supplied to the inner cavity of the mandrel.

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