SU1335481A2 - Apparatus for assembling metal-cord breaker bracelets - Google Patents

Abstract

The invention relates to equipment of tire industry plants and is intended for assembling metal cord cord bracelets for radial tires of pneumatic tires. The aim of the invention is to improve the quality of the collected tires. For this, the radially movable rods are provided with protrusions facing the center of the device and made at the ends of the rods distant from the axis of rotation. 5 il. 00 with SL N OO N

Description

The invention relates to equipment of tire industry plants, is intended for the assembly of steel cord cord bracelets and radial tires of pneumatic tires and is an improvement of the known device according to the author. St. No. 1106683.

The aim of the invention is to improve the quality of the collected tires.

FIG. 1 shows the proposed device, general view; lengthwise cut; in fig. 2 shows section A-A in FIG. one; in fig. 3- 5 - successive stages of the process of twisting the edges of the bracelet.

The device contains horizontally arranged hollow shafts 1 and 2 with drives (conventionally not shown), mounted concentrically to another with the possibility of relative rotation, in which grooves 3 and 4 are made, respectively.

On the drive shaft 1 there is an assembly drum 5 containing the main radially movable segments 6 and additional segments 7 rigidly connected to the main ones and having longitudinal grooves 8. The segments are rigidly mounted on the pushers 9 movably installed in the guide grooves 10. The pushers 9 are articulated by means of connecting rods 11 with the drive shaft 2.

On the drive shaft 1 on one side and on the hollow drive shaft 2 on the other side of the assembly drum 5, mechanisms are installed for turning the breaker edges, made in the form of axially movable main disks 12 and auxiliary disks 13, which are rigidly connected with nuts 14 and 15, respectively. The latter are installed on the driving screw 16 mounted inside the hollow drive shaft 1, and the thread pitch of the nut 14 of the main disc is twice the pitch of the nut 15 of the additional disc. By means of nuts and the lead screw, the disks 12 and 13 move along the drive hollow shaft 1. On the main disks 12, radially movable sectors 17 are installed, having on the ends of the assembly drum facing the ends of the longitudinal grooves 18, each of which is made in one longitudinal radial plane with a corresponding groove additional segment 7 of the assembly drum 5.

The sectors 17 of the main disk 12 are rigidly mounted on one ends of the rods 19, movably mounted in the guide grooves 20 of the disk 12. The other ends of the rods 19 H1 are hinged to the axially movable sleeves 22 that are rigidly connected to the rods of the pneumatic cylinders 23 rigidly mounted on the main disks 12.

On the auxiliary disks 13, in the guide grooves 24, radially movable rods 25 are installed, each communicating at one end with respective longitudinal slots 8 and 18 of segments 7 and sectors 17, respectively. The rods 25 are equipped with actuators for radial

expansions made in the form of rods associated with them and mounted with their free ends in profile grooves 27, which are made in plates 28 rigidly mounted on the main disk 12.

Each radially movable rod 25 is rigidly connected to a support 29, on which additional rods 30 are rigidly fixed, each interacting with corresponding additional grooves 31 and 32 of segments 7 and sectors 17, respectively. On each of the rods 25 and 30, the protrusions 33 are made facing the center of the device. On the inner surface of sector 17, the anti-adhesive material nipples 34 are rigidly attached.

The device works as follows.

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Sectors 6 and 7 of the assembly drum 5 in the initial position (Fig. 1) are overlaid with the first and then the second layers 35 and 36 of the steel cord breaker (Figs 1 and 3),

5 include a rotation drive drive of the lead screw 16, nuts 14 and 15 move along grooves 3 and 4 and move disks 12 and 13, rigidly connected with them, along hollow drive shafts 1 and 2 towards assembly drum 5. Thus, due to a different clamp The threads of the nuts 14 and 15 move the disk 12 twice the speed of the disk 13. Therefore, the disks 12 and 13 approach each other, the end of the rod 26 slides along the profile groove 27 of the plastic 28 and the rods 25 move radially from the axis of rotation of the device guide grooves 24. Together with terzhn E 25 are extended in the same direction as additional rods 30. At the same time as it moves

0 the rods 25 slide along the longitudinal grooves 8 additional segments 7, and the longitudinal grooves 18 of the sectors 17 of the main disk, and the longitudinal rods 30 slide along the additional grooves 31, additional 45

body segments

and additional grooves 32 sectors 17. At the same time, first, the rods 25 and 30 fit under the edge of the first layer of the breaker and the protrusions 33 begin to bend the edge at some distance from its edge, and the sectors 17 begin to roll 50 edges in the axial direction, and the sectors 17 begin interact with the breaker material also at some distance from the edge. In the process of turning the edges, the breaker material is pressed against sectors 17 due to the elastic forces of the metal core 55

yes, which tends to straighten the edges of the breaker. As the rods 25 and 30 extend in the radial direction, their protrusions 33 no longer interact with the belt material (Fig. 4). Since the speed of movement of the main disk 12 is twice the speed of movement of the auxiliary disk 13, the sectors 17 move together with the belt material, and the rods 25 and 30 are constantly lagging axially away from the turned edge by one and the same distance protrusions 33. At the same time, the ends of the sectors 17 also lag behind the edge by a certain distance, and the edge is wrapped by sectors 17 due to the frictional forces between these sectors and the belt material. At the end of the turn-up process, when the turn-up of the edges of both layers of the breaker can already begin, the effort to turn the edges increases dramatically, since the rigidity of the double-layer breaker is much higher than the rigidity of one layer. Therefore, there is a slippage of sectors 17 relative to the wrapped edge of the first belt layer. The ends of the sectors 17 are mixed to the edge, and the rods 25 and 30 approach the edge of the bracelet bracelet and, together with the sectors 17, tightly wrap the edges of the first breaker layer 36 to the second layer 35. Sticking of the breaker material on the inner surface of the sectors 17 with their relative slippage is excluded by the overlays 34 of anti-adhesive material (Fig. 5). The width across the belt bracelet is fixed by the left and right groups of the rods 25 and 30 and is equal to the distance between the rods of these groups, and since these rods are mounted in the disks 12, kinematically connected to each other by means of the nuts 14 and the lead screw 16, the size the width of the belt bracelet is obtained exactly every time.

During the turn-up process, the breaker material is folded in the radial direction by an amount that provides a small gap between the roll-up edge and the breaker material and eliminates the possibility of the edge sticking.

At the end of the edge turning process, pneumatic cylinders 23 are turned on, which axially displaces sleeves 22, which by means of tongs 21 and rods 19 mix in the radial direction along guide grooves 20, sectors 17, which press the rolled edges of the steel cord breaker.

Then, pneumatic cylinders 23 are turned on, which move the sleeves 22 in the opposite direction and sectors 17 move away from the assembly drum 5, while sticking of the breaker on these sectors is eliminated by the overlays 34. The rotation screw drive 16 of the reverse screw and the disks 12 and 13 is retracted.

The rotational drive of the hollow shaft 2 is activated, which by means of the connecting rods 11 moves in the radial direction the pushers 9 along the guide grooves 10 and the segments of the assembly drum are compressed to the axis of rotation of the device. At the same time, the pneumatic cylinders 23 are activated and move in the radial direction to the axis of rotation of the sector 17 device.

After that, the assembled steel cord cord bracelet is removed from the device, the rotational drive of the hollow shaft 2 is turned in the opposite direction, the bushes 22 are also moved in the opposite direction by means of the pneumatic cylinders 23 and the device returns to its original position.

Claims (1)

Invention Formula A device for assembling metal cord charm bracelets according to ed. St. X 1 106683, characterized in that, in order to improve the quality of the assembled tires, the radially movable rods are provided with protrusions facing the center of the device and made on the ends of the rods distant from the axis of vrasha.  v 41 / 31 32 Fig 2 In the M 5tej L / L AG 6 / J5 / / / / 1 d Rygl 25 / 35 //// 7 // l FIG. five Editor G. Volkova Order 3794/18 Make up. E. Krieger Tehred I. VeresKorrektor E. Roshko Circulation 564Subscribe VNIIPI USSR State Committee for Inventions and Discoveries  1 13035, Moscow, Zh-35, Raushsk nab. 4/5 Production and printing company, Uzhgorod, ul. Project, 4