JP2821773B2 - Tire component crimping device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a crimping device for crimping a joint portion of a tire component molded on a molding drum.

2. Description of the Related Art In a tire molding machine, there are two types of tire constituent members molded on a molding drum, which may be joined to each other at required positions.

For example, as shown in FIG. 10, when the inner liner 02 is wound around the center of the forming drum 01, and the side walls 03 are partially overlapped and wound on both sides thereof, the center inner liner 02 and the side walls on both sides are wound.
03 is pressed by a separate roller.

Conventionally, as shown in FIG. 10, a support base 05 is screwed to each screw in which a screw rod 04 parallel to the drum axis of the forming drum 01 is formed symmetrically in opposite directions to each other. When the screw rod 04 is rotated by the motor 07, the left and right support bases 05 can move symmetrically with respect to each other and move away or approach.

The support base 05 is provided with a roller 06 having a rotation support shaft parallel to the drum axis, so that the inner liner 02 wound around the forming drum 01 can be pressed.

Therefore, with the supports 05 approaching each other and pressing the roller 06 against the center of the inner liner 02,
When the motor 07 is driven at the same time as the 01 is rotated to rotate the screw rod 04, the roller 06 can press the inner liner 02 spirally from the center to both sides.

On the other hand, the sidewalls 03 on both sides are pressed by a worker by hand using a roller at their joints, or, as shown in FIG. 011 is provided with a motor 012.
Or a separate crimping device that drives 0 with a motor 013.

The roller 012 rotates around a rotation support shaft perpendicular to the drum axis, and stops the forming drum at a predetermined position.
012 against the inner joint of sidewall 03
When 13 is driven, the support base 011 moves outward and the rollers 012
Presses the joint of the sidewall 03 from the inside to the outside.

As described above, in the conventional crimping device, the inner liner 02 in the center is formed by the roller 06, and the sidewalls on both sides are formed.
03 is performed by applying a roller by hand or using a roller 012 having a separate moving mechanism.

Therefore, it requires human labor or has a separate moving mechanism, resulting in an increase in size and cost of the apparatus.

Means for Solving the Problems and Action The present invention has been made in view of the above points, and an object of the present invention is to provide a small-sized crimping device at low cost without requiring any manpower.

That is, the present invention relates to a tire forming machine that winds a tire constituent member around a forming drum to form a cylindrical shape, and presses a joint portion. In the tire forming machine, a moving mechanism that moves a support base parallel to a drum axis, and a drum shaft mounted on the support base First, which has a rotation support shaft parallel to and can be press-bonded while rotating the tire constituent member.
And a second roller having a rotation support shaft mounted on the support stand and perpendicular to and not intersecting with the drum axis and capable of being pressed without rotating the tire constituent member. It is.

Since the first roller and the second roller are mounted on the same support base with the second roller and require no manual operation, only one moving mechanism is required, and the size and cost can be reduced. .

In the second roller, since the rotation support shaft is perpendicular to the drum shaft and does not intersect with the drum shaft, the tangent in the rotation direction of the pressurized peripheral surface is parallel to the drum shaft, and the joining surface such as the sidewall is elongated in the axial direction. Pressure bonding can be performed while rolling the joint in the axial direction.

At that time, the rotation of the forming drum is stopped, and the joining is performed by pressure bonding, so that the second roller is rolled and pressed in the axial direction along the long joining portion in the axial direction, so that the bonding can be performed efficiently.

Embodiment An embodiment according to the present invention shown in FIGS. 1 to 9 will be described below.

FIG. 1 is a side view of the crimping device 2 of the present embodiment, and FIG. 2 is a front view of the same.

A support frame 5 is mounted on two rails 4 laid on a base 3.
Are mounted so as to be movable back and forth, and a pair of support bases 7 are mounted on two rails 6 laid in the left-right direction on the support frame 5 so as to be movable left and right. The crimping device 2 is mounted.

Since the support frame 5 is positioned movably in the front-rear direction obliquely downward and rearward with respect to the molding drum 1 (see FIG. 1), the crimping device 2 mounted on the support 7 is close to and close to the molding drum 1. 1 can be evacuated.

The support frame 5 has a screw rod 8 rotatably mounted between the left and right side plates 5a. The screw rod 8 penetrates the left and right support bases 7 and is screwed together.

The right and left threads of the screw rod 8 are formed symmetrically,
At each symmetrical position, it is screwed with the left and right support tables 7.

One end of the screw rod 8 penetrates through the side plate 5a of the support frame 5, and a pulley 9 is fitted to an end thereof, and is fitted to a drive shaft 10a of a motor 10 fixed to the side plate 5a via a bracket 13. Pulley 1
A belt 12 is stretched between the pulley 1 and the pulley 9.

Accordingly, the screw rod 8 is rotated via the belt 12 by the drive of the motor 10, and the left and right support bases 7 screwed with the screw rod 8.
Move symmetrically in the left-right direction (see FIG. 3).

The crimping devices 2 provided on the left and right support tables 7 are configured symmetrically.

The support base 7 has a U-shape with an upper opening, and has a base end fixed to a horizontal base 7b provided between left and right side plates 7a, and a pair of left and right brackets 20 projecting obliquely upward and forward. Have been.

A support shaft 21 is provided between the front ends of the brackets 20. An arm 22 is suspended from the support shaft 21 so as to be swingable, and a rotary support shaft is provided at its free end in a direction parallel to the drum shaft of the molding drum 1. The roller 23 is fixed, and a roller 25 is axially mounted on a rotation support shaft 23 projecting to one side via a bearing 24 (see FIGS. 4 and 5).

The arm 22 has a protruding part slightly closer to the support shaft 21 than its center.
22a formed with a cylinder 2a provided behind it
The sixth rod 26a and the tip of the protruding portion 22a are rotatably connected to each other.

The rear end of the cylinder 26 is pivotally supported by a bracket 27 erected at the rear end of the horizontal base 7b, and is located between the left and right side plates 7a of the support base 7.

Therefore, when the cylinder 26 is driven to project the rod 26a, the roller 25 can be swung forward and upward about the support shaft 21 via the arm 22 (see the dashed line in FIG. 4).

A support plate 31 is fixed to the outer surface of the outer bracket 20 via a support member 30.
32 and the guide member 33 are fixed in an obliquely inclined posture.

A guide rod 34 is fitted on the guide member 33 by a ball spline in parallel with a rod 32a that can project obliquely upward from the cylinder 32. The tip of the guide rod 34 and the rod 32 of the cylinder 32
The leading end of a is fixed to a common plate member 35.

A pair of roller support plates 36 are vertically provided on the plate member 35, and a rotation support shaft is perpendicular to the drum shaft between the two roller support plates 36.
37, and a roller 39 is mounted on the rotating shaft 37 via a bearing 38.
Is supported.

Accordingly, when the cylinder 32 is driven to project the rod 32a, the roller 39 can be projected obliquely upward by the guide member 33 and the guide rod 34 (see dashed lines in FIGS. 6 and 7).

The present pressure bonding apparatus 2 has the above-described structure, and is capable of pressing / joining a tire component wound around the forming drum 1 by two types of rollers 25 and 39 mounted on the same support base 7.

 The operation procedure will be described below.

An inner liner 50 is wound around the center of the molding drum 1 and partially overlapped on both sides thereof to form a sidewall.
51 is wound and molded into a cylindrical shape (see FIG. 10).

First, the support frame 5 on the rail 4 of the base 3 is advanced to bring the crimping device 2 closer to the forming drum 1.

The left and right support tables 7 are in a state close to the center (the state shown in FIGS. 1 and 2).

At this time, the left and right rollers 25 are in contact with each other as shown in FIG.

Here, when the cylinder 26 is driven to swing the roller 25, the roller 25 is pressed against the center of the inner liner 50 wound around the forming drum 1 as shown in FIG.

When the screw 10 is rotated by driving the motor 10 at the same time as the molding drum 1 is rotated, the support base 7 moves to the left and right outward directions, and the roller 25 causes the rotating inner liner 50 to spirally move outward from the center. Crimping in a shape.

When the roller 25 reaches the side wall, the motor 10 is stopped to stop the movement of the support table 7 and the rod of the cylinder 26 is stopped.
26a is retracted, and the roller 25 swings downward.

When the rotation of the forming drum 1 is stopped at a predetermined number of rotations, the joining portion of the sidewall 51 is located on the forming drum 1 facing the roller 39.

This is because the tip of the sidewall 51 is initially the molding drum 1
By storing the winding position and controlling the rotation angle, the joining portion can be made to coincide with the position facing the roller 39.

Here, when the cylinder 32 is driven to cause the roller 39 to protrude, as shown in FIG. 9, the roller 39 presses the inner joint portion of the side wall 51, and thus drives the motor 10 again to move the support base 7. The roller 39 can press the joint of the side wall 51 outward.

As described above, in this example, two types of rollers 25 and rollers 39 are used.
Are mounted on the same support base 7 and are moved left and right by one moving mechanism, so that the entire apparatus can be reduced in size and cost can be reduced.

Advantageous Effects of the Invention According to the present invention, by mounting two types of rollers on the same support base, it is possible to reduce the size and cost of the crimping device.

[Brief description of the drawings]

1 is a side view of a crimping apparatus according to an embodiment of the present invention, FIG. 2 is a front view of the same, FIG. 3 is a front view of another state, and FIG. 5 is a front view of the same, FIG. 6 is a side view of an essential part of the crimping device partially omitted, FIG. 7 is a view taken in the direction of arrow VII in FIG. 6, and FIG. Side view of a crimping device showing a state pressed against the tire component,
FIG. 9 is a crimping apparatus showing a state in which the other roller is pressed against a tire component, and FIG. 10 is a perspective view showing a main part of a conventional crimping apparatus. 1 ... forming drum, 2 ... crimping device, 3 ... base, 4 ...
... Rail, 5 ... Support frame, 6 ... Rail, 7 ... Support base, 8 ... Screw rod, 9 ... Pulley, 10 ... Motor, 11 ...
... Pulley, 12 ... Belt, 13 ... Bracket, 20 ... Bracket, 21 ... Spindle, 22 ... Arm, 23 ...
Rotating support shaft, 24 ... Bearing, 25 ... Roller, 26 ... Cylinder, 27 ... Bracket, 30 ... Support member, 31 ... Support plate, 32 ... Cylinder, 33 ...
… Guide member, 34 …… Guide rod, 35 …… Plate member, 36 ……
Roller support plate, 37 Rotating shaft, 38 Bearing, 39 Roller, 50 Inner liner, 51 Sidewall.

Claims (1)

(57) [Claims] 1. A tire forming machine for winding a tire constituent member around a forming drum to form a cylindrical shape and press-bonding a joint portion, comprising: a moving mechanism for moving a support base in parallel with a dorm shaft; and a drum shaft mounted on the support base. A first roller having a rotation support shaft parallel to the first roller and capable of being pressed while rotating the tire component, and a rotation support shaft mounted on the support base and perpendicular to and not intersecting with the drum shaft, the tire component And a second roller capable of being pressed without rotating the tire.