CS218208B1 - A method of penetrating blends into the edges of a warp of reinforcing material and a device for performing the method - Google Patents

Abstract

The invention relates to a method of penetrating the mixture into the edges of the reinforcing material warp, for example textile, steel or glass, in the production of tires when applying reinforcing material on multi-roll calenders. In the penetration gap of the calender, the excess of the nano-mixture increases the penetration pressure in the area of the edges of the reinforcing material warp to the level of the penetration pressure of the center of the warp and the applied material penetrates the structure of the reinforcing material evenly across the entire width of the warp. The device for penetrating the mixture into the edges of the reinforcing material warp is formed by scraper plates placed at both ends of the working length of the roller in front of the penetration gap, while the contact surfaces of the scraper plates copy the surface of the roller and the planes of the scraper plates' scraping surfaces form an angle of 1° to 90° with the roller axis. The scraper plates are mounted by holders on a guide slidably in the direction of the roller axis. The scraper plates can be pressed against the cylinder surface, for example, by a spring.

Description

The invention relates to a method of penetrating a mixture into the edges of a warp of reinforcing material, for example of textile, steel or glass, in the manufacture of tires in the deposition of reinforcing material on multi-roll calenders. In the penetration slot of the calender, with an excess of filler mixture, the penetration pressure in the region of the warp edges of the reinforcing material increases to the level of the penetration pressure of the warp center and the coating material penetrates the reinforcing material structure evenly over the entire width of the warp. The device for penetrating the mixture into the edges of the warp material is formed by scraper plates positioned at both ends of the working length of the cylinder in front of the penetrant slot, the wiper plate abutting the surface of the cylinder and °. The scraper plates are attached to the guides by sliding guides in the direction of the cylinder axis. The scraper plates may be pressed against the surface of the cylinder by, for example, a spring.

Giant. 1

The invention relates to a method of penetrating a mixture into the warp edges of a reinforcing material, for example of textile, steel, glass, in particular in the manufacture of tires of all dimensions, in particular all-steel, in a reinforcing material on multi-roll calenders.

So far, the penetration of the mixture into the warp edges of the reinforcement materials has not generally been performed on multi-roll calenders. The intersection of the calender rolls or the counter deflection of the rolls solves partially but insufficiently penetration into the edges of the warp of the reinforcing material. These measures do not ensure a perfect penetration of the mixture between the cords at the edge of the warp, which results in an excessive increase in the pitch at the edge cords of the warp cords in tire building, especially all-steel tires, which reduces tire quality. This drawback is solved by cutting the edge cords of the warp prior to tire building, but this generates a large amount of irreversible waste.

The above drawbacks are eliminated by the method of penetration of the mixture into the edges of the warp of reinforcing material, for example of textile, steel or glass, especially in tire production, in the deposition of reinforcing material on multi-roll calenders. mixture whose thickness is at least twice the thickness of the coating mixture in the center of the warp of the reinforcing material, wherein the sum of the thickness of the reinforcing material and the coating mixture at the edges of the penetration slot is greater than the penetration slot size, and a roller temperature in the range of 50 to 120 ° C. The device for penetrating the mixture into the edges of the warp of the reinforcing material according to the invention is formed by scraper plates located at both ends of the working length of the cylinder in front of the penetration slot, the wiper plate abutting surfaces follow the cylinder surface. ° to · 90 °. The scraper plates are attached to the guides by means of a guide, movable in the direction of the cylinder axis, and at the same time they are pressed against the cylinder surface by a spring, for example.

Accordingly, the device of the invention eliminates imperfect penetration of the mixture between the warp edge cords, thereby avoiding excessive spacing of the warp edge cords in tire building. For this reason, there is no need to trim these cord edges. This significantly reduces the amount of irreversible waste.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows a side view of a four-roll calender with a penetration device installed. Giant. 2 shows an overall front view of a penetration device disposed on the calender roll in front of the penetration slot.

The device according to the invention is placed in front of the penetration slot 3 (Fig. 1j. The wiping plates 1 are fastened at both ends of the working length of the roller 2 by means of holders 7 (Figs. 1 and 2). 6 (FIG. 2j. The wiper plates 1 are pressed against the surface of the roller 4 by a spring 9 with their bearing surface 10 (FIGS. 1 and 2), wherein the planes of the scraper surfaces 5 of the wipers 1 form an angle α from 1 ° to 90 ° (Fig. 2).

The penetration device according to the invention operates as follows. After the reinforcement material and the coating composition have been introduced into the penetration slot 3 of the calender, the scraper plates 1 of the device are guided by the holders 7 and the guide 8 to the edges of the reinforcement material warp. The springs 9 press the scraper plates 1 with their abutment surfaces 10 tightly against the surface of the cylinder 4. The excess wider edges of the mixture are thus moved from the surface of the calender roller 4 by the scraper surfaces 5 of the scraper plates 1 to the edges of the warp The edges of the warp of the reinforcing material form a roll of excess mixture which substantially increases the pressure of the deposition mixture in these parts, resulting in a considerable increase in the penetration of the mixture into the edges of the warp.

The penetration method of the composition and the device according to the invention can further be used in the deposition of reinforcing fibrous materials with various thermoplastic materials.

Claims (4)

SUBJECT A method of penetrating a mixture into the edges of a warp of reinforcing material, for example of textile, steel or glass, in particular in tire manufacturing, in depositing the reinforcing material on multi-roll calenders, characterized in that a coating composition is fed into the penetration slot. the thickness is at least twice the thickness of the deposition mixture at the center of the warp of the reinforcing material. .. wherein the sum of the thickness of the reinforcing material and the coating composition at the edges of the penetration slot is greater than the size of the penetration slot, at a roller circumferential speed of 0.05 to 1 m / s and a roller temperature in the range of 50-120 ^° C. Device for penetrating the mixture into the edges of the warp of reinforcing material, for example of textile, steel or glass, in particular in the manufacture of tires, in the deposition of reinforcing material on multi-roll calenders according to claim 1, characterized in that it consists of wipers (1); located at both ends of the working length of the roll (2) in front of the penetration slot (3), the abutment surfaces (10) of the wiping plates (1) following the cylinder surface (4) and the planes of the folding surfaces (5) of the wiping plates (1) (6) an angle of from 1 ° to 90 °. Device for penetrating mixtures into the edges of the warp of the reinforcing material according to claim 2, characterized in that the scraper plates (1) are fastened by holders (7) to the guide (8) in a sliding manner in the direction of the axis of the cylinder (6). 4. The device for penetrating the mixture into the edges of the warp of the reinforcing material according to claim 2 and 3, characterized in that the scraper plates (1) are pressed against the surface of the cylinder (4) by, for example, a spring (9).