SU487781A1 - Device for continuous vulcanization of long rubber products - Google Patents

Description

one

The invention relates to devices for the continuous vulcanization of long rubber products and can be used for the vulcanization of microporous rubber products.

A device for continuous vulcanization of long rubber products is known, comprising a vulcanization chamber with mechanical seals and means for supplying a working medium thereto and two parallelly arranged endless pressing tapes passing through the vulcanization chamber above the support plate in working branches. In the known device, the pressure on the product is created by the working medium supplied to the vulcanization chamber, and remains constant throughout the entire vulcanization process. However, for some products, such as microporous rubber, it is necessary to vary the pressure during the vulcanization process, and for vulcanization of other products, such as ebonite, the pressure provided by the working medium supplied to the vulcanization chamber is not sufficient.

The purpose of the invention is to regulate the pressing pressure.

The goal is achieved by the fact that the device is equipped with an additional pressing element installed in the vulcanization chamber above the working branch of the upper pressing belt and made in the form of an elastic chamber along the vulcanization chamber having means for supplying the working medium under pressure to it, and a plate fixed above it.

FIG. 1 shows the proposed device; in fig. 2 is a section along the line A-A in FIG. one.

The device for continuous vulcanization of long rubber products contains

vulcanization chamber 1 with mechanical labyrinth seals 2 and 3 and with a support plate 4 fixed in it and two parallel-arranged infinite pressing tapes 5 and 6, envelopes, respectively

drive drums 7 and 8 and passing through the working branches through the vulcanization chamber 1 above the base plate. In the vulcanization chamber above the working branch, the top of the pressing belt 5 has an additional

a pressing element in the form of an elastic chamber 9 located along the vulcanization chamber 1, having means 10 for pressurizing the working medium therein, and a plate 11 fixed above it. Plates 4 and 11

perceive the thrust force that occurs when the working environment is fed into the elastic chamber. Steam is fed into the curing chamber through valve 12, and water through valve 13, the coolant is discharged.

from the vulcanization chamber I is carried out. through the system 14. The medium is supplied under pressure l, and the seals 2 and 3 are drawn in lines 15 and 16. In the manufacture of a product with a pattern, the latter can be made on pressing presses on ribbons in a mirror image.

The operation of the device is as follows.

A lengthy rubber product, such as a tape of 17 microporous rubber, enters the working branch of the lower pressing belt 6 and is fed to a vulcanization chamber, at the entrance of which it interacts with the working branch of the upper pressing tape 5. The pushed c. two sides of the pressing tape tape 17 passes through the mechanical seal 2 and enters the curing chamber filled with superheated water at a pressure of 5-6 kgf / cm. After the belt is moved to the full length of the vulcanization chamber, the pressing tapes are stopped and the elastic chamber 9 is supplied with compressed air with a pressure greater than the pressure of the heat transfer medium in the vulcanization chamber. For example, if the pressure in chamber 1 is 5 kgf / cm and the required additional pressing pressure is 0.5 kgf / cm, then the pressure of compressed air supplied to the elastic chamber should be 5.5 kgf / cm. By applying compressed air of different pressure into the elastic chamber, the compression pressure can be controlled. After holding for a certain time, the pressure from the elastic chamber is released, the pressing tapes are set in motion, and the vulcanized portion of the tape 17 is removed from the vulcanization chamber 1, and a new one is in its place. With a slight additional pressing force, the device can work without stopping the press bands, in this case the drive of the drums 7 and 8 must overcome the braking force created by the elastic chamber.

Subject invention

A device for continuous vulcanization of long rubber products, containing a vulcanization chamber with face seals and means for supplying a working medium to it and two parallelly arranged endless pressing tapes passing by working branches of the plunger through the vulcanization chamber above the base plate, characterized in that In order to ensure the possibility of regulating the pressing pressure, it is equipped with an additional pressing element installed in the vulcanization chamber above the working branch of the upper section. uyuschey vypolnenny.m belt and disposed along a vulcanization ka .mery elastic chamber having means for supplying working fluid into it under pressure, and fixed above the plate. 1 I tu .--); - l - - - 9 P N, -I (

/ DGSSH W r: U il

Uh