JPH07314574A - Winding device for tire belt reinforcing layer - Google Patents

Abstract

PURPOSE:To make possible the winding of all patterns, the improvement of productivity and shortening of replacing time as well as winding time of a reinforcing cord. CONSTITUTION:Traversing devices 6a, 6b, equipped respectively with the supplying devices 5a, 5b of reinforcing cords W1, W2 are provided near the side of a tire forming drum 1 with a predetermined interval along the circumferential direction of the tire forming drum 1 respectively. Two sets of lenear guide rods 10a, 10b are arranged in parallel on the opposing side plates 8 of respective supporting frames 7a, 7b of the traverse devices 6a, 6b so as to pinch ball screws 9a, 9b supported rotatably at the center while respective ball screws 9a, 9b are driven to rotate by driving devices (traverse motors) 11a, 11b, which are installed at the outside of the side plates 8.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a belt-reinforcing-layer winding device, and more specifically, in a tire-reinforcing-layer manufacturing process, a plurality of reinforcing cords are simultaneously or simultaneously fed from a feeding device provided in a plurality of traverse devices. The present invention relates to a belt-reinforcing-layer winding device that can be supplied with a time difference, a speed difference, and the like and can be wound into an arbitrary layered shape.

[0002]

2. Description of the Related Art Conventionally, in a radial tire forming process, in order to improve high-speed durability, a strip-shaped nylon reinforcing layer having a winding angle of 0 ° is wound between a steel belt and a cap tread in one or two layers. It is known that a method of forming the end portion by overlapping a predetermined length is used, and in addition, a strip of one or a plurality of reinforcing cords covered with rubber is spirally wound to form a double layer. In this case, a method is known in which a similar reinforcing layer is formed by folding back and wrapping at a terminal portion (for example, JP-A-62-251203).

By the way, when forming a reinforcing layer of a tire by sequentially winding a single reinforcing cord between the steel belt and the cap tread at an equal pitch in the forming step as described above, the tire is wound several hundred times. Therefore, there is a problem that it takes a considerable amount of time and therefore it is not possible to improve the productivity. Further, when the steel belt is wound in two layers by separating the both end portions and the central portion from each other. However, there is a problem in that it cannot be done at the same time, and that it takes a lot of time and labor to change the reel of the reinforcing cord.

[0004]

However, in the case of such a conventional device, since a plurality of traverse devices are simultaneously driven by one feed drive device (drive motor), a pattern in which reinforcing cords are wound in layers is provided. However, there is a problem that only a certain winding pattern can be carried out.

The present invention has been devised in view of the above-mentioned conventional problems, and a plurality of traverse devices installed at predetermined intervals in the circumferential direction of the molding drum are provided with individual feed drive devices. By controlling the drive simultaneously or with a time difference, a speed difference, etc., it is possible to wind any pattern, and it is possible to improve productivity as well as the time for changing the reinforcement cord and the winding time. An object of the present invention is to provide a device for winding a belt reinforcing layer, which can reduce the applying time.

[0006]

In order to achieve the above-mentioned object, the present invention is provided in the vicinity of a side portion of a rotationally drivable forming drum.
A plurality of traverse devices each provided with a reinforcing cord supply device at predetermined intervals in the circumferential direction of the forming drum are installed, and each of the plurality of traverse devices is provided with a feed drive device, and each traverse device is independent. The gist is that the drive control is performed in accordance with the above.

Further, the feed drive device of the traverse device comprises a ball screw which is screwed into the traverse device and is arranged in the moving direction of the traverse device, and a traverse motor which rotationally drives the ball screw. is there.

[0008]

According to the present invention, a plurality of reinforcing cords are supplied on the steel belt from a plurality of traverse devices arranged in the circumferential direction in the vicinity of the side surface of the forming drum as described above. It is possible to wind any winding pattern by controlling a feed drive device that is provided individually to move a plurality of traverse devices at the same time or with a time difference or a speed difference.
The productivity can be improved.

[0009]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a schematic configuration diagram of a device for winding a tire reinforcing layer according to the present invention, FIG. 2 is a plan view thereof, 1 is a tire forming drum, 2 is a drum shaft, 3 is a drum shaft rotatably supported. In the bearing, the tire forming drum 1 is rotationally driven by a rotary feed drive device 4 (drive motor).

In the vicinity of the side portion of the tire building drum 1, the supply devices 5a, 5 for the reinforcing cords W ₁ , W ₂ are provided along the circumferential direction of the tire building drum 1 and at a predetermined interval.
Traverse devices 6a and 6b respectively provided with b are installed. The traverse devices 6a and 6b are the first
As shown in FIG. 2 and FIG. 2, each support frame 7
Two linear guide rods 10a and 10b are arranged in parallel on opposite side plates 8 of a and 7b with ball screws 9a and 9b rotatably supported in the center, and each ball screw 9a and 9b is a side plate. 8 are configured to be rotationally driven by feed drive devices (traverse motors) 11a and 11b which are installed on the outer side of 8, respectively.

Each of the traverse devices 6a and 6a
In the upper part of the ball screws 9a, 9b of b and the two linear guide rods 10a, 10b, reinforcing cords W ₁ , W _{2 are provided.}
Support plate 12a on which the supply devices 5a and 5b of
12b is placed on the support plates 12a and 12b.
Is screwed into the ball screws 9a and 9b via a nut 13 and slidably fitted into the two linear guide rods 10a and 10b via bearings 14a and 14b.

The reinforcing members of the traverse devices 6a and 6b
Word W₁, W₂The supply devices 5a and 5b are supporting plates
Reinforcing cords are placed on the 12a and 12b via the bracket 15.
De W ₁, W₂Reel-shaped supply member 16a, 1 around which is wound
6b is installed, and tie from these supply members 16a, 16b
The steel belt V wound around the forming drum 1 is
Book reinforcement cord W₁, W₂Continuously, and
Are wound at the same time or with a time lag.
It

Therefore, in the traverse devices 6a and 6b having the above-mentioned structure, when the ball screws 9a and 9b are rotated by the forward rotation and the reverse rotation of the feed drive devices 11a and 11b which can be individually driven and controlled, the traverse devices 6a and 6b are rotated. The support plates 12a and 12b are provided with two linear guide rods 10a and 1 via nuts 13 which are screwed into the ball screws 9a and 9b.
0b, the supply member 16 simultaneously moves horizontally along the surface of the tire forming drum 1 while winding the reinforcing cords W ₁ and W ₂ around the steel belt V. is there.

Next, various winding methods and winding patterns of the reinforcing layer of the tire will be described with reference to FIGS. 3 (a) to 3 (d) and FIG.
This will be described with reference to (a) to (d). First, the reinforcing cords W ₁ and W ₂ of the strip are respectively pulled out from the respective supply devices 5a and 5b on both sides of the steel belt V wound around the tire forming drum 1 and the starting ends are attached to predetermined positions.

Then, the tire forming drum 1 is rotated by the rotary feed drive device 4 at a predetermined number of revolutions, and the feed drive devices 11a and 11b are started at the same time or with a speed difference, a time difference or the like to start the ball screw 9a. , 9
When b is rotationally driven, the traverse devices 6a and 6b screwed into the ball screws 9a and 9b move simultaneously or in a direction in which they separate from each other due to a speed difference, a time difference or the like, and the reinforcing cords W ₁ and W ₂ are attached to the steel belt V. Wrap around.

When a predetermined number of windings have been advanced, at least one of the feed driving devices 11a and 11b is reversely rotated to reversely drive the ball screws 9a and 9b, thereby reversing the moving directions of the traverse devices 6a and 6b. It is possible to wind at least two layers of the reinforcing cords W ₁ and W ₂ at the same time by cutting and terminating the ends at the winding position.

FIGS. 3A to 3D show the feed drive device 1
1a and 11b are simultaneously started, and at the same time, they are driven and controlled at the same number of revolutions to reinforce the reinforcement cords W ₁ and W _2.
FIG. 3A shows a winding pattern for winding the steel belt V in which only both ends of the steel belt V are formed into two layers. The start of the _two reinforcing cords W ₁ and W ₂ starts at both ends of the steel belt V. The traverse devices 6a, 6b are started simultaneously from the inner side to the outer side in the vicinity, and after winding for a predetermined length.
Is folded back to form two reinforcing layers.

3 (b) is the reverse of FIG. 3 (a), and when only both ends of the steel belt V are formed into two layers, the start Q of the _two reinforcing cords W ₁ and W ₂ The steel belt V starts from the outside near both ends of the steel belt V at the same speed at the same time from the outside to the inside, and after traversing for a predetermined length, the traverse devices 6a and 6b are turned back to form two reinforcing layers. is there.

FIG. 3 (c) shows a case where only both ends of the steel belt V are formed into a single layer, and the two reinforcing cords W ₁ and W ₂ are started from inside the vicinity of both ends of the steel belt V. It is started and wound at the same speed at the same time toward the outside. FIG. 3D shows the case where the entire width of the steel belt V is formed in two layers, and the two reinforcing cords W ₁ and W ₂ are started at the same time from the central portion of the steel belt V toward the outside. , The traverse devices 6a and 6b after starting at the same speed and winding a predetermined length
Is folded back to form two reinforcing layers.

Next, in FIGS. 4A to 4D, the feeding drive devices 11a and 11b are drive-controlled to give the traverse devices 6a and 6b a speed difference or a time difference, and the reinforcing cord W ₁ , A winding pattern for winding W ₂ is shown. FIG. 4 (a) shows that the steel belt V is formed with two layers at both end portions and one layer at the intermediate portion and the central portion. The starting ends Q of the reinforcing cords W ₁ and W ₂ are from the central portion on the right side. The left side is slightly displaced from the center part and the traverse devices 6a and 6b
Are started at the same time, and the traverse devices 6a and 6b are individually wound by a predetermined length while being driven and controlled by the feeding drive devices 11a and 11b.
Is folded back to form two reinforcing layers.

In addition, as shown in FIG. 4B, the both ends and the central portion of the steel belt V are made into two layers as in FIG.
In the case where the intermediate portion is formed in _{one layer} , the traverse devices 6a and 6b are shifted from the center portion on the right side and the left side at the same time by shifting the start ends Q of the _two reinforcing cords W ₁ and W ₂ from the center portion at the same time. When the traverse devices 6a and 6b are started and wound by a predetermined length while individually controlling the traverse devices 6a and 6b through the feed drive devices 11a and 11b, the traverse devices 6a and 6b are wound.
Is folded back to form two reinforcing layers.

Further, FIG. 4C shows a steel belt V
In this case, the two reinforcing cords W ₁ and W ₂ are started at the left side first with a time difference from the vicinity of both ends of the steel belt V. In this case, the traverse devices 6a and 6b are moved to the feed drive device 11
When a predetermined length of winding is performed while individually controlling the drive with a time difference via a and 11b, the traverse devices 6a and 6b
b is folded back to form two reinforcing layers.

Further, FIG. 4D shows a steel belt V
The upper and lower feeders 5a and 5b can be efficiently wound by changing the strip width of the upper and lower sides narrower on the upper side. is there. Similar to (c) above, this winding pattern also has a predetermined length while the traverse devices 6a and 6b are individually driven and controlled with a time difference or a time difference and a speed difference via the respective feed drive devices 11a and 11b. After the winding, one of the traverse devices 6a and 6b is turned back to form a two-layer reinforcing layer. The method of winding the reinforcing cords W ₁ and W ₂ is as follows.
The present invention is not limited to the above embodiment.

[0024]

As described above, according to the present invention, a plurality of traverses are provided in the vicinity of the side portions of the molding drum which can be rotationally driven as described above, and each of which is provided with a device for supplying the reinforcing cord at a predetermined interval in the circumferential direction of the molding drum. A device is installed, and a feed drive device is provided for each of the plurality of traverse devices, and each traverse device is driven and controlled independently, so that it is possible to wind any pattern, and productivity is improved. It is possible to reduce the time required to change the reinforcing cord and the winding time.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a tire reinforcing layer winding device embodying the present invention.

FIG. 2 is a plan view of the traverse device shown in FIG.

3A to 3D are explanatory views showing winding patterns of the reinforcing cords at the same speed by simultaneously driving the traverse devices.

4A to 4D are explanatory views showing winding patterns of reinforcing cords when the traverse device is driven with a time difference or a speed difference.

[Explanation of symbols]

1 tire building drum 5a, 5b reinforcing cord supply device, 6a, 6b traverse device 11a, 11b feed drive device (traverse motor),
W ₁ , W ₂ Reinforcement cord V Steel belt

Claims (2)

[Claims] 1. A plurality of traverse devices, each of which is provided with a reinforcing cord supply device at predetermined intervals in the circumferential direction of the molding drum, are installed in the vicinity of a side portion of the rotationally drivable molding drum. The device for winding a tire belt reinforcing layer, wherein each of the traverse devices is provided with a feed drive device, and the traverse devices are independently driven and controlled. 2. The feed drive device of the traverse device,
The tire belt reinforcing layer winding device according to claim 1, comprising a ball screw screwed into the traverse device and disposed in a moving direction of the traverse device, and a traverse motor that rotationally drives the ball screw.