SU1326434A1 - Method of vulcanizing continuous articles - Google Patents

Abstract

This invention relates to the manufacture of rubber technical products and is intended for their vulcanization. The purpose of the invention is to expand the range of vulcanized products and increase their quality by preventing contact with the surfaces of the vulcanization chamber. To do this, before inserting into the vulcanization chamber, rigid end fittings are installed on the ends of the vulcanizable product. The end pieces have the corresponding product shapes of the bottom and side surfaces and the mass per unit length. 3 il. with C5 OO 4:

Description

The invention relates to the manufacture of rubber technical products and is intended for their vulcanization.

The purpose of the invention is to expand the range of vulcanized products and increase their quality by preventing contact with the surfaces of the vulcanization chamber.

FIG. Figure 1 shows schematically an installation for carrying out the proposed method; in fig. 2 is a section A-A in FIG. I; in fig. 3 is a section BB in FIG. one.

The method of vulcanization of lengthy products can be carried out as follows.

Out of the syringe maschina 1, the product 2 enters the pneumatic actuator 3, from which it is fed into the vulcanization chamber 4. Before entering into the vulcanization chamber 4, rigid end fittings (not shown) are installed at the ends of the vulcanization chamber 2, which have corresponding product shapes of the bottom and side surfaces and mass per unit length. The presence of an end-tool prevents damage to the product when it comes into contact with the walls of the curing chamber, and also allows vulcanization of products having curved ends as it exits the extruder.

For products that do not have longitudinal holes, the end fittings are made with transverse teeth and the product is fixed to them by pressing the latter into the end teeth. For products with longitudinal holes, the end of the end cap is inserted into the hole. The end pieces can be made of metal or plastic with a length of 0.3-0.8 m.

The vulcanization chamber 4 is installed obliquely and the perforated partition 5 is divided into two cavities, into the lower one of which a gaseous heat carrier is fed through the pipeline 6 from the turbocompressor 7 — air into which steam is introduced from the boiler 8. The coolant is taken from the upper cavity through the line 9. The perforated partition 5 is made along the profile of the lower part of the product 2. The gaseous coolant supplied under pressure forms a gas leader between the partition 5 and the product 2. After installation of the end fitting, item 2, a vulcanization chamber 4 is introduced, where it is held by a gas heat transfer agent, vulcanized and transported to the outlet end under its own weight. In this case, the end-cap is aligned with the end of the product, and its other parts are aligned

heat carrier jets in the vulcanization chamber 4 with air jets in the propeller 3. For vulcanization in water vapor, the boiler 8, the electrode, the heaters 10 and the compressor 7 are covered, and the outlet ends of the vulcanization chamber 4 are covered. At the same time, increased pressure is created in the cavity of the vulcanization chamber 4 with respect to the atmospheric pressure and through the covered ends of the chamber from the cavities air

0 is displaced by steam. In order to avoid air entrainment during the vulcanization process, in the chamber 4 at a distance of 0.25 of its length from the ends, there are valves 11 and 12, the position of which controls the pressure of the heat transfer medium between the ends of the chamber 4.

The angle of inclination of the chamber 4 is made equal to 2-10 °, and the angle of inclination of the pneumatic actuator is 5-20 °.

To enable the vulcanization of various products, chamber 4 is dismountable, and perforated partition 5 is replaceable. At the same time, the perforated cover 13 of the support 3 is also replaced and new pressures are installed.1 of the compressors 7 and 14. The volatile substances released during the vulcanization are sucked by the stretches 15 and 16 placed over the ends of the vulcanization chamber 4. The vulcanized body coming out of the chamber 4 The product 2 is picked up through free rotating from the clone rollers 17, which prevent the product from contacting the edge of the outlet of the chamber 4. A similar end-stop device is also put on the other end of the product before entering the curing chamber.

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Claims (1)

Invention Formula A method of vulcanization of long products, in which the products are passed through a vulcanization chamber above a perforated partition through which gaseous coolant is fed under pressure to create a gas liner to support and transport the product out of contact with the surfaces of the vulcanization chamber, in order to expand the range of vulcanized products and improving their quality by preventing contact with the surfaces of the vulcanization chamber, before entering the vulcanization chambers On the ends of the product being vulcanized, rigid end fittings are installed, having the shape of the bottom and side surfaces corresponding to the product, and the mass per unit length. 15 5 K Af n 6 fug, 7 ///////// / УЖ / yvwwwx vvy 2 (pi / e. j YG.GZY ™ SIF- .R A. 3 -.O.OSO. VNIIPI. Рс,. „„ About „„. „D.„.,, D. ™. , „„ „„, pppoz. „„ ,. е ™ о ± „г; -:„ „7;„ РГ г ;. g-oro; r project „.. ,,