SU1551557A1 - Apparatus for spot vulcanization of conveyer belts - Google Patents

Abstract

The invention relates to equipment for the local vulcanization of conveyor belts and can be used for docking and repair at the place of operation. The purpose of the invention is to improve the quality of vulcanization. For this, a pressure plate 5 is placed between the heating plate 3 and the support beam 1. The plate 5 is made in the form of a frame and thin sheets forming the working surfaces of the plate and is provided with a fitting for supplying the working medium under pressure. In the cavity of the plate are placed associated with one of the sheets of the gasket. Gaskets 14 are made in height smaller walls of the frame. In the heating plates 3 and 4, stiffening ribs 9 are arranged perpendicular to the walls of the latter perpendicular to the walls of the latter. The proposed device provides the possibility of both separate and combined action of the main vulcanization parameters — pressure and temperature — which guarantees a high quality of vulcanization of conveyor belts. 4 il.

Description

Fie.2

The invention relates to equipment for the local vulcanization of conveyor belts and can be used for docking and repair at the place of operation.

The purpose of the invention is to improve the quality of vulcanization.

FIG. 1 shows the inventive device for local vulcanization; in fig. 2 - the same, with a pressure plate under pressure; in fig. 3 - heating plate without top sheet; in fig. 4 - pressure plate without top sheet.

The device for local vulcanization of conveyor belts comprises support beams 1 with clamping devices 2 and heating plates 3 and 4. A pressure plate 5 is placed between the heating plate 3 and the support beams 1.

Each heating plate (Fig. 3) is made up of a frame 6 and thin sheets 7 attached to it, forming the working surfaces of the plate. In the cavity of the plates 3 and 4 are placed limiting deflection plates of the plate 8, attached to one of the sheets 7. To give the heating plates rigidity around the periphery in their cavity around the perimeter of the frame 6 are located ribs 9 of rigidity attached to one of the sheets 7 perpendicular to its walls. The plates 8 also provide an even distribution of the coolant. Plates 3 and 4 have fittings for the inlet 10 and outlet 11 of the coolant.

The pressure plate 5 (FIG. 4) is made up of a frame 12 and thin sheets 13 attached to it. In the cavity of the plate 5 there are spacers 14 for limiting the deflection of the plate attached to one of the sheets 13. The gaskets 14 are made in height smaller than the frame 12 on height of the deformation of the joint joint of the conveyor belt, caused by the nominal specific pressure of the joint pressure test. This is necessary in order to pre-compress the joint of the tape around the perimeter of the plates with the help of the clamping device 2 when the support beams 1 are being tightened.

Plate 5 has fittings for inlet 15 and outlet 16 of the working medium under pressure.

The device works as follows.

On the heating plate 3, the joint of the conveyor belt 17 prepared for curing is laid. The joint is covered with the upper heating plate 4, on which the upper row of beams 1 is installed. The pressing plate 5 is placed between one of the heating plates 3 or 4 and the beams 1 closest to it.

Beams 1 are fastened with clamping devices 2 with a predetermined force. At the same time, the joint of the belt 17 is compressed along the periphery of the plates to the nominal specific pressure of the joint pressure test. Then in clamp

A pressure plate (oil, air, gas) is supplied to the fluid plate 5. As a result, the pressing plate 5 is inflated and compresses the rest of the joint located inside the contour of the plate. Since the frame 12 of the pressure plate 5 is rigid and this plate begins to swell noticeably at some distance from the frame, pressure is guaranteed to be transferred from the plate to the edges of the heating plate 3 through the stiffening ribs 9 in case of insufficient pre-crimping of the plate contour with jigs mi

After the joint of the tape 17 is crimped by the clamping devices and the pressure is applied to the pressure plate 5, heat transfer medium is supplied to the heating plates 3 and 4. The joint is vulcanized.

To evenly distribute the pressure over the entire joint area, the thickness of the sheets 7 and 13 is chosen to be minimal.

For uniform and rapid heating of the joint, the heating plates are insulated from below and above with a layer of fabric material, for example, pieces of conveyor belt,

5 or asbestos cloth. If the length of the joint exceeds the width of the slab, then several vulcanization devices are laid on the joint.

0

The proposed device provides the possibility of both separate and joint action of the main parameters of vulcanization - pressure and temperature, which guarantees the high quality of vulcanization of conveyor belts.

Claims (1)

Invention Formula A device for local vulcanization of conveyor belts comprising support beams with clamping devices and 0 heating plates, each of which is formed by a frame and thin sheets attached to it, which form the working surfaces of the plate, and are provided with stiffeners placed in its cavity and attached to one of the sheets by stiffeners, which, in order to increase quality of vulcanization, it is provided with a pressure plate placed between one of the heating plates and the support beam nearest to it, made in the form of a frame and forming working surfaces of the plate of thin sheets and equipped tutserami for supplying working fluid under pressure, wherein a cavity plate has associated with one of the gasket sheets, 5 are made along the height of the smaller walls of the frame, and the stiffening ribs of the heating plates are located along the perimeter of their frames perpendicular to the walls of the latter. 0   Jc / flflll. oh oh Ltd about o - oh oh oh oh O o - Ltd 3о I о I о i R / I about -8 -8 J -1 about Yu I X t FIG. 75 l PhieA