SU441770A2 - Tread plier of machine for building pneumatic tyres - Google Patents

Abstract

AT-RIGGING DEVICE TO THE MACHINE FOR ASSEMBLY OF AN PNEUMATIC TIRE COVERS on the author. St. No. 321411, characterized in that, in order to increase the speed of stitching and the productivity of the assembly equipment, the tacking rollers are made in the form of a set of individual disks mounted on an elastic base, the diameters of which decrease as they move away from the point of attachment of the rollers on the lever.

Description

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-4 Known prikatnoe device to, a machine for assembling tires pneumatic tires on the main ed. St. 321411, the mechanism for turning the press rollers and pressing them to the assembly drum of which is made in the form of a vertical pneumatic cylinder mounted on a movable carriage with a damper, on the stem of which a lever is attached with a roller and a roller connected to it rocking pneumatic cylinder. In the known device, the prikatychny roller has a small surface of contact with the tire parts during the rolling process, which reduces the packing speed and the productivity of the assembled equipment. The purpose of the invention is to increase the speed of stitching and the productivity of assembly equipment. For this, the roller rollers are made as a set mounted on the elastic base of individual discs, the diameters of which decrease as they move away from the point of attachment of the rollers on the lever. FIG. 1 schematically shows the proposed attachment device in FIG. 2 - stitching roller; in fig. 3 — stitching device at the moment of rolling the layers on the cylindrical part of the assembly drum; in fig. 4 - the same, at the time of prikatk to the side of the tire and in the moments of the stitching of profiled rubber parts. Prikatochnaya device to; A machine for assembling tires pneumatic tires contains two mechanisms 1 for the collar and press the prikatochnyh rollers 2 to the assembly drum. Each mechanism 1 is installed in horizontal guides 3 and is moved by driving screws 4 and rotated by an electric motor through a gearbox (not shown). The roller 2 is fixed on the lever 5 fixed by means of the hinge 6 on the carriage 7 and connected to the rod 8 of the swinging pneumatic cylinder 9. The carriage 7 moves in guides rigidly connected to the rod of the vertical pneumatic cylinder 10 with a damper (not shown). Each stitching roller contains a stitching disk 11, by means of vshpnik 12 mounted on the axis 13 of the lever 5, and a set of disks 14, whose diameters decrease as they move away from the point of attachment of the roller on the lever 5. The disks 14 are mounted on elastic bases 15 , fixed on the rotary roller 16, and separated from the other by means of washers 17, diameter 1 of which is larger than the outer diameter of elastic bases 15. Elastic bases allow the discs to change their position relative to each other. The set of disks from the end is fixed by nuts 18 with washers 19. The operation of the stitching device is carried out as follows. After the layers 20 of the cord are applied to the assembly drum 21, they are hydrated along the cylindrical part of the assembly drum. In the initial position, the packers are located at the center line of the assembly drum. When you press the Prikatka frame button, the assembly drum 21 starts to rotate, the carriage 7 is lifted by the pneumatic cylinder 10 to the assembly drum, and the stitching rollers 2 are pressed to the cord layers 20 by means of the rocking pneumatic cylinder 9. After the time necessary for the central part of the cord layers to roll, the period of time is rotated the lead screws 4, and the carriages 7 move from the center to the edges of the assembly drum. At the same time, the stitching rollers 2 roll the entire surface of the cord layers on the cylindrical part of the assembly drum. Due to the fact that the diameters of the stitch discs 14 decrease with distance from the point of fixation of the roller, the stitching roller 2 is pressed against the cord layers with its entire surface. This makes it possible to increase the contact area between the layers of the cord and the stitching roller and, accordingly, speed up the rolling process. After crimping, landing the wings and twisting the layers of the cord onto the wing, the bead of the tire side is rolled (see Fig. 4, position I). During this operation, the stitching disc 11 having the largest diameter is pressed against the side of the tire 22, and the carriage 7 itself slowly lowers when the damper associated with the pneumatic cylinder 10 is operated. The edges of the cord layers extending onto the cylindrical part of the assembly drum 21 are pressed the time of movement of the carriages 7 with press rollers 2 towards the center of the assembly drum. Due to the fact that in the process of rolling the side part of the tire, one rigidly fixed sticking disk works, the specific pressure exerted by the rollers on the side parts of the tire becomes maximum. This makes it possible to increase the solidity of the bead. FIG. 4 (position P) shows the operation of rolling the profiled rubber parts, for example a tread, which, just like the rolling of the cord layers, starts from the center of the assembly drum 21. The press wheels 14 of the stitching roller 2 change their position relative to each other. Due to this contact area

the stitch roller 2 with the tread surface is kept constant j and while the stitch roller is moving along the complex tread contour.

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Claims (1)

ADHESIVE DEVICE TO THE MACHINE FOR ASSEMBLING PNEUMATIC TIRES CHESK TIRES by bus St. No. 321411, characterized in that, in order to increase the speed of rolling and the performance of the assembly equipment, the rolling rollers are made as a set of individual disks mounted on an elastic base, the diameters of which decrease with distance from the point of attachment of the rollers on the lever.