SU598296A1 - Device for assembling pneumatic tyres - Google Patents

Abstract

1. A DEVICE FOR ASSEMBLING AN PNEUMATIC TIRE COVERS, containing the main assembly drum mounted on the drive shaft, formed by radially expanding sectors with grooves for the bead rings. and auxiliary assembly drums formed by radially expanding sectors for turning and dividing the cord edges on the side rings, drives for radial unclamping the sectors of the main and auxiliary assembly drums and a mechanism for axially moving the sectors of the auxiliary assembly drums, characterized in that the purpose of improving the reliability of the device, it is provided with fixed on the ends of the sectors of the main assembly drum and on the ends of the sectors of the auxiliary assembly drums facing the foundations CB building drum, with a high elastic modulus rectangular plates perekryuayuschimi neighboring sector and the groove under the bead cores. 2. A device according to claim 1, characterized in that the rectangular plates are made of nylon.

Description

The invention relates to expandable assembly drums for assembling pokryashek pneumatic tires, and can be applied in the tire industry.

A device for assembling tires of pneumatic tires, containing main and auxiliary assembly drums formed by radially expanding sectors, and a mechanism for turning and duplicating cord edges, side rings in the form of an annular spring are known. A disadvantage of this device is the difficulty of fastening the annular spring and the inconvenience

in operation. In addition, the redundant element, made in the form of an annular spring, does not provide a high-quality connection of parts in the assembled sleeve, since during the unclamping of the drum between the turns of the spring; -; gaps are formed.

It is also known an assembly for assembling pneumatic tires comprising a main assembly drum mounted on a drive shaft formed by radially expanding sectors with grooves for bead rings, and auxiliary assembly drums formed by radially expanding sectors for turning and duplicating cord edges to bead rings, radial drives unclamping the sectors of the main and auxiliary assembly drums and a mechanism for axial movement of the sectors of the auxiliary assembly drums. The disadvantages of this device are that the duplicating element is also complete in the form of an annular rod, the fastening structure of which on the sectors is complex and unreliable in operation. The quality of the duplication of layers in the assembled coating depends on the size of the gaps between the coils of the spring,

In order to increase reliability, the proposed device is provided with fixed at the ends of the sectors of the main assembly drum and at the ends of the sectors of the auxiliary assembly drums facing the main assembly drum, elastic with a high modulus of elasticity, rectangular shastinkamm, blocking the sector connection and cane for side rings, and rectangular plates made of caprono

FIG., A general view of the device; FIGS. 2-4 show successive stages of twisting and duplicating the edge of the cord onto the bead ring; in figs 5-7 - the same, the type of verification in fig, 8 is a sector for turning and a duplicate of the cord edges on the side rings,,. :. -with. ,;

The device contains the main assembly drum 2 simulated on the drive shaft 1, which is formed by radially expanding sectors 3 with grooves a for the side rings, and I are auxiliary assembly reels 4 formed by the radially expanding sectors 5 for turning and duplicating the cord from the side to the side rings. For unclamping sectors 3 are annular power

cylinders 6, the pistons of which by means of levers 7 are associated with sectors 3. For unclamping sectors 5, force cylinders are used mounted in movable disks 8o. For axial movement of disks 8, 9 and 10 are mounted, mounted inside shaft 4 and connected j discs by means of rods 1. At the ends of sectors 5 elastic rectangular plates 12f, similar to 43, are fixed with high modulus of elasticity and fixed at the ends of sectors 3. Each plate 12 and 13 is fixed on one half of the sector in such a way that its hanging edges overlap ayut half adjacent sector and the groove to seat the bead core. The end of each sector 5 is provided with a protrusion b

The device works as follows.

Lay a layer of cord 14 of FIG. 2) plant t side rings I5. At the same time, sectors, elastic plates are arranged on the surface in the way that (shown in FIG. 5) By means of power cylinders 6, the main drum 2 is depressed, and the landing rings 15 (see fng.Z) are seated in groove a. At the same time, the sectors 3 and 5, a gap is formed equal to the width of the protrusion a (cm, figob), so the plates 12 and 13 move apart to the edge of the protrusion b and are folded back into the groove a. Then the disks 8 are approached to sectors 3 by turning the edges of the cord 14 on the side rings 15 (sms fg. 4). Pr this plate 12 turn are forming together with sectors piece backup roller 3 (see. fyg.7, 8).

The invention simplifies the design of the redundant elements and makes it possible to improve the quality of the assembled poppet frames.

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Claims (2)

1. DEVICE FOR ASSEMBLY OF TIRES OF PNEUMATIC TIRES, comprising a main assembly drum mounted on a drive shaft formed by radially expandable sectors with grooves for side rings, and auxiliary assembly drums formed by radially expandable sectors to wrap and duplicate cord edges on side rings, drives for the expansion of the sectors of the main and auxiliary assembly drums and a mechanism for axial movement of the sectors of the auxiliary assembly drums, characterized in m, that, in order to increase the reliability of the device, it is equipped with rectangular plates-®, elastic with a high modulus of elasticity, overlapping neighboring sectors, fixed at the ends of the sectors of the main assembly drum and at the ends of the sectors of the auxiliary assembly drums, facing the main assembly drum - / RA and grooves for side rings. '' 2. Device pop 1, characterized in that the rectangular _ plates are made of nylon. S