SU1407842A2 - Method of producing sealing layer of pneumatic tyres - Google Patents

Abstract

The invention relates to tire performance and can be used in the manufacture of parts for tubeless tires, namely a multi-layer sealing layer. The purpose of the invention is to increase the productivity of the process and save the insulating material. To do this, after the top layer is applied with insulating material 4, the top layer 2 of the next blanket of the sealing layer is applied onto the insulating material. Then, its inner layers are applied to obtain a double preform of the sealing layer with the upper layers facing the inside of the preform. 4 il.

Description

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The invention relates to tire thinking, can be used in the manufacture of a multilayer sealant layer of tubeless caps and is an improvement of the invention according to the author. St. W 1162616.

The purpose of the invention is to increase the productivity of the method and save the insulating material.

FIG. 1 shows the rolling of an upper layer in an insulating material; FIG. 2 - the same, when using a gasket; in fig. 3 - winding and duplication of layers; in fig. 4 - roll-in finished double billet.

The method is carried out as follows.

At the exit of the rolls of the calender 1, a layer of rubber tape 2 of the same quality (top layer) enters the conveyor 3, where it is closed with insulating material, polyethylene film 4, on it, into the roll 5 on the sealing device 6. The roller 7 rolls the film 4 and rubber tape 2. Rolled rubber rubber tape 2 into the roll 5 forming the upper layer is supplied to the warehouse or to the unrolling device 8 (Fig. 1). In polyethylene film 4, half of the required amount of rubber bands 2 is rolled. The device 6. The storage time of the calendered sheet in the insulating material is short compared with the storage time of the blank of the sealing layer. It is more profitable to store the finished sealing layer than its component rubber bands. Therefore, short-term storage of the rubber tape 2 in the cushioning sheet 9 does not cause changes in the physical and chemical properties of the rubber.

Having released the necessary amount of rubber bands 2 of the same quality, clean the rolls of the calender and feed the rubber with a different formulation, which is also calendered into rubber bands 11, forming the inner layers. Rubber tapes 11 of a certain caliber and width are fed to the conveyor 3 (Fig. 3). If, for example, it is necessary to manufacture a four-layer product, wrap two layers around the endless conveyor 3 to form a multi-layer ring product. When the third second to last inner layer starts to be wound onto previously wound layers, the top layer is fed with film 4 outwards (from the conveyor belt) from the roll 5, located in the unrolling device 8. After applying the top layer with insulating material on the insulating material 4 The top layer of the next blanket of the sealing layer is blown.

10, located in the device 6, with the separation of the cushioning sheet 9

and rolling it into a roll 12. Rubber 0 tape 2, fed from device 6, is pressed by roller 7, and from speeding device 8 by roller 13. By making one turn of the conveyor 3, simultaneous winding 5 of the last inner inner top with plastic film 4 layers and the top layer of the second blank. Cutting the ends of the rubber bands 2 from the rolls 5 and 10, continue to wind the rubber band 11, forming the three inner layers of the second blank. Having obtained a double preform of the sealing layer 14 with the upper layers inward, between which there is a polyethylene film 4, it is closed into a cushioning sheet 15 (Fig. 4).

The end of the double rolled billet 14 is cut from the rubber band

11, which is the beginning of the inner layers of the next preform, and the cycle repeats.

A roll 16 with a double blanking of a sealing layer with a lifting device is fed to a warehouse or directly to an assembly machine. When applying a sealing layer to the assembly drum, a blank is initially applied, in which the top layer is rolled up into the gasket

0 web (because the top layer rolled up with polyethylene film 4 is duplicated in hot condition and better adhered to the film), and the second blank together with polyethylene 5 new film 4 and cushioning web 9 rolls into the reel. In order to impose a sealing layer on the assembly drum with rubber bands

0

five

0

five

11 it is necessary to install the reel 16B of the unrolling device accordingly.

Claims (1)

Invention Formula A method of manufacturing a sealing layer of tires pneumatic ppsh auth. St. No. 1162616, that is, in order to improve the performance of the method and save the insulating material, after the top layer is applied with insulating material, the top layer of the next blanket of the sealing layer is laid out on the insulating material the inner layers with obtaining a double preform of the sealing layer with the upper layers facing the inside of the preform. W 9 FIG. g ten