JP3207655B2 - Bias cutter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bias cutter for cutting a tire material obliquely.

[0002]

2. Description of the Related Art A bias cutter has a let-off device in which a stock roll and a liner roll are mounted as a set in order to facilitate material exchange in a short time. The let-off device includes a cassette type in which the above set is transferred at the time of material exchange, and a so-called stock roll type in which a stock roll and a liner roll are directly mounted on the let-off device.

[0003] In the case of the stock roll system, a double let-off type in which two sets are mounted is frequently used in order to perform material exchange in a short time. 3 to 5
FIG. 6 shows a conventional example of a bias cutter provided with a cassette type let-off device, and FIG. 6 shows a bias cutter provided with a stock roll type double let-off device.

First, a bias cutter provided with a cassette type let-off device shown in FIGS. 3 to 5 will be described. The bias cutter comprises a let-off device 101 for unwinding a tire component material and a cutting device for diagonally cutting the tire component material. 102, a loading device 103 for loading the tire component material into the cutting device 102, a splice device 104 for joining the cut tire component material, and a winding device 105 for winding the joined tire component material. I have.

[0005] The let-off device 101 and the carry-in device 103 are mounted on a frame 106. The frame 106 has a bearing 107 mounted on a side surface of the cutting device 102, a pivot pin 108 rotatably supported by the bearing 107, and wheels 110 running on rails 109 buried in the floor. Equipment (not shown)
To rotate the frame 106 about the turning center pin 108 in accordance with the cutting angle of the tire constituent material.

Reference numeral 201 denotes a cassette.
Is a frame structure on which a stock roll 202 and a liner roll 203 can be mounted.
Is carried onto a ball caster 206 attached to a slide base 205 by a low lift 204 (see a two-dot chain line) or the like, and is fixed on the slide base 205 by lock devices 207 and 208.

At this time, the cassette 201 freely moves on the ball caster 206 and the let-off device 101
Is accurately positioned in the orthogonal state. Slide stand 20
5 includes a stock roll 202 and a liner roll 20.
3 drive devices 209 (see FIG. 5). The slide base 205 is mounted on the rail 210 on the frame 106.
Thereby, it is slidably supported in the width direction of the tire constituent material. Then, the linear drive device 212 (see FIG. 5) attached to the frame 106 slides in the width direction of the tire constituent material, and is centered at a position detected by the sensor 211.

[0008] Frame 106 and slide stand 205
Is cut out in a range D in FIG. 4 and a range E in FIG. 5 in order to insert the low lift 204 and the like. On the other hand, the rail 210 is used for centering the tire constituent material.
The slide base 205 is set on both sides of the low-lift introduction notch E with a sufficient length to slide.

Next, FIG. 6 illustrates a bias cutter provided with a stock roll type doublelet-off device.
Since the structure other than the double let-off device 301 is the same as that of the cassette system, only the double let-off device 301 will be described. The slide mounts 305a and 305b are used as the slide mounts 305a and 305b.
02, the liner roll 303, and these driving devices 30
4a and 304b, and is slidable on the rail 307 attached to the frame 306 in the width direction of the tire constituent material.

Then, the slide bases 305a, 305
b is a motor 308a, 308b, a wand 309a,
309b allows movement in the width direction of the tire constituent material, that is, between the operating position F and the material exchange positions (or standby positions) G and H. In addition, these slide bases 305a and 305b can be finely moved to a position detected by the sensor 310 in the operating position F for centering of the tire constituent material.

The double let-off device 301 is swiveled together with the carry-in device 311 according to the cutting angle of the tire constituent material, similarly to the cassette type. When replacing tire constituent materials, temporarily replace the liner cloth with the stock roll 3
02, the stock roll 302 is taken out by a crane (not shown) or the like, returned to a stock roll storage position or a transport trolley, the next used stock roll 302 is taken out, and mounted on a slide base 305,
The liner cloth is wound around the liner roll 303, and the liner cloth is wound up until the head of the tire constituent material comes out, and the preparation is completed.

[0012]

In the conventional cassette type let-off device shown in FIGS. 3 to 5, since the total weight of the cassette is 3 tons or more, a low lift or the like is usually used. In that case, a crane or the like can be used, but the operation speed is slow and time is required. Also, as shown in FIG. 4, when introducing the leading portion of the tire constituent material into the loading device 103, the stock roll 202 is used so that the worker can easily work.
It is preferable to install an overhead conveyor on top of the above, but if there is an overhead conveyor, a crane cannot be used, so a low lift or the like is used.

Therefore, as shown in FIG. 5, there is a notch E for introducing a low lift, and the rail cannot be made continuous like the rail for moving the slide base 305 of the stock roll type double let-off device shown in FIG. In addition, the cassette cannot be moved, and a single cassette cannot be mounted. Therefore, it is necessary to change the cassette every time the tire constituent material is replaced.

In the stock roll type double let-off device shown in FIG.
The slide stand 305 can be moved, and the next tire constituent material can be replaced at the material replacement positions G and H without stopping the operation of the machine while another stock roll is being used, especially when two kinds of tire constituent materials are used. Only needs to be returned to the operating position. However, if three or more types of tire constituent materials are used, and if the tire constituent materials on the stock roll 202 are to be replaced before they are not used up, all the liners must be rewound once and then re-wound. It is necessary to lift the stock roll 202 with a crane or the like, replace the tire constituent material, and wind up the liner until the head of the tire constituent material comes out again, and the operation of the bias cutter itself does not stop, but for this work, The worker's work takes a long time.

Further, the tire constituent material wound by the calendering device for producing the tire constituent material is taken out by a crane or the like, placed on a carrier, transported to the position of the let-off device of the bias cutter, and taken out there by a crane or the like. Since it is mounted on the apparatus, there is a problem that handling such as changing tire constituent materials becomes complicated and work efficiency is reduced.

The present invention has been made in view of the above problems, and has as its object to replace tire constituent materials in a short time. Another object of the present invention is to provide a bias cutter which can eliminate the work of changing stock rolls and improve the working efficiency.

[0017]

To achieve the above object, according to the Invention The bias cutter of the present invention, the bias cutter equipped with let-off device of a cassette system in which mounted the stock roll and the liner roll set, turning center
Loading device that can be swiveled independently around the center, and the loading device
An arc-shaped guide rail having the same center as
And a let-off device provided so as to be movable along the idle rail, and capable of mounting two cassettes, and a cutout for mounting these cassettes by a low lift or the like provided toward the center of rotation. I have.

In the bias cutter, a connecting device for connecting and turning the let-off device and the carry-in device may be provided.

[0019]

The bias cutter according to the present invention is configured as described above. (1) When the tire forming material of the stock roll 22 is used up, the let-off device is first turned, and then the leading portion of the next tire forming material is removed. The cassette is introduced into the loading device, cutting of the tire component material is started, and the cassette at the tire component material replacement position is replaced while the bias cutter is operating. (2) When replacing the tire constituent material before using up the tire constituent material of the stock roll, first, the tire constituent material remaining in the carry-in device is completely rewound into the cassette, then the let-off device 1 is turned, and then the next The leading portion of the tire constituent material is introduced into the loading device, the cutting of the tire constituent material is started, and when the same tire constituent material is used again, the replacement is completed. If the type of tire constituent material is also changed, the cassette is replaced. Even if the next tire constituent material is also replaced during use, the leading part of the tire constituent material is located immediately before the unwinding position, and the front liner is moved to the front of the tire constituent material as in the stock roll method. There is no need to wind up. (3) When changing the cutting angle, first, the carry-in device and the let-off device are connected by the connecting device, the let-off device is turned, then the connecting device is released, and the carry-in device is fixed so as not to turn. (4) When transporting the tire component material, the cassette is taken out by the winding device of the calendering device that manufactures the tire component material, and transported to the vicinity of the bias cutter let-off device. The cassette that has used up the tire constituent materials is returned to the vicinity of the winding device of the calendering device.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a bias cutter according to the present invention will be described with reference to an embodiment shown in FIGS. 1 and 2. The bias cutter comprises a let-off device (double-let-off device) 1 for unwinding a tire constituent material, and a tire constituent material. Device 2 for cutting the tire component material obliquely, a loading device 3 for loading the tire component material into the cutting device 2, a splicing device 4 for joining the cut tire component material, and winding up the joined tire component material And the device 5.

The loading device 3 is mounted on a frame 16. The frame 16 of the loading device 3 includes a bearing 6 mounted on a side surface of the cutting device 2, a pivot pin 7 rotatably supported by the bearing 6, and wheels 9 running on rails 8 embedded in the floor. The drive device (not shown) drives the wheels 9 to turn the frame 16 around the turning center pin 7 in accordance with the cutting angle of the tire constituent material.

The let-off device 1 includes a pivot center pin 7
The guide is guided by an arc-shaped guide rail 10 on the floor surface centered on the guide rail 11 and a guide roller 11 fitted to the guide rail 10, and is supported so as to be able to turn around the pin 7. The let-off device 1 is a rail 1 buried on the floor surface.
2, the wheel 13 is driven by a turning drive device (not shown), and the let-off device 1 is moved independently of the loading device 3 to a cutting angle and a position of a cassette to be used. Turn according to.

In the let-off device 1, notches 15a, 15 for introducing a low lift or the like as shown by a two-dot chain line in FIG.
b is provided in the direction toward the turning center of the turning center pin 7. A connecting device 14 connects the frame 16 of the carrying-in device 3 and the let-off device 1, and simultaneously rotates the carrying-in device 3 by the turning drive device of the let-off device 1.

In FIG. 2, reference numeral 21 denotes a cassette.
Is a frame structure on which a stock roll 22 and a liner roll 23 can be mounted. The cassette 21 is mounted on a slide base 25 by a low lift 24 (see a two-dot chain line) or the like.
And is fixed on the slide base 25 by the lock device 27 or the like.
At this time, the cassette 21 freely moves on the ball caster 26 and is accurately positioned orthogonal to the let-off device 11. A drive unit (20 in FIG. 5) for driving the stock roll 22 and the liner roll 23 is provided on the slide base 25.
9).

The slide base 25 is supported by rails 30 on the frame 16 so as to be slidable in the width direction of the tire constituting material. Then, the tire is slid in the width direction of the tire constituent material by a linear drive device (see 212 in FIG. 5) attached to the frame 16, and is centered at a position detected by the sensor 31. Next, the operation of the bias cutter shown in FIGS. 1 and 2 will be specifically described. (1) When the tire forming material of the stock roll 22 is used up, (a) the let-off device 1 is turned. (B) The leading portion of the next tire constituent material is introduced into the carry-in device 3, and cutting of the tire constituent material is started. (C) While the bias cutter is operating, the cassette at the tire component material replacement position is replaced. (2) When replacing tire constituent materials before exhausting the tire constituent materials of the stock roll 22, (a) completely rewind the tire constituent materials remaining in the carry-in device 3 into the cassette. (B) The let-off device 1 is turned. (C) The leading portion of the next tire constituent material is introduced into the carry-in device 3, and cutting of the tire constituent material is started. When using the same tire component again, the replacement is completed. (D) If the type of tire constituent material is also exchanged,
Replace cassette. Even if the next tire constituent material is also replaced during use, the leading part of the tire constituent material is located immediately before the unwinding position, and the front liner is moved to the front of the tire constituent material as in the stock roll method. There is no need to wind up. (3) When changing the cutting angle, (a) connecting the carry-in device 3 and the let-off device 1 to the coupling device 14
Connect with. (B) The let-off device 1 is turned. (C) Release the connecting device 14 and fix the loading device 3 so as not to rotate. If there is no connecting device, the single turning drive device is driven synchronously to turn. Of course, when there is no tire constituent material in the carry-in device 3, it is not necessary to drive it synchronously. (4) When transporting the tire constituent material: (a) The cassette is taken out by the winding device of the calendering device that manufactures the tire constituent material, and is transported to the vicinity of the bias cutter let-off device 1. The cassette that has used up the tire constituent materials is returned to the vicinity of the winding device of the calendering device.

[0026]

According to the bias cutter of the present invention, when the tire forming material of the stock roll 22 is completely used as described above, only the let-off device 1 is turned to start using the next tire forming material. When the tire constituent material is exchanged before the tire constituent material of the stock roll 22 is used up, the tire constituent material remaining in the carry-in device 1 is rewound, and only the let-off device 1 is turned to turn to the next tire constituent material. Switch. At that time, when the tire constituent material is reused, the cassette is left in the let-off device 1 and replaced with the next tire constituent material. The head is immediately before the unwinding position, and the replacement is completed only by changing the cassette. Further, by transporting the cassette to and from the calendering device, the work of changing stock rolls can be omitted, so that tire constituent materials can be replaced in a short time. In addition, the work of changing stock rolls can be omitted, and work efficiency can be improved.
If the stock material of the stock roll is used up, the use of the next tire material can be started only by turning the let-off device, and if the tire material is to be replaced before the stock material of the stock roll is used up, ,
By simply rewinding the tire constituent material remaining in the carry-in device and turning the let-off device, it is possible to switch to the next tire constituent material. At that time, when the tire constituent material is reused, the cassette can be left in the let-off device, and is replaced with the next tire constituent material. The leading portion of the material is immediately before the unwinding position, and the exchange is completed only by changing the cassette. Further, by transporting the cassette to and from the calendering device, the work of changing stock rolls can be omitted, so that tire constituent materials can be replaced in a short time. In addition, the work of changing stock rolls can be omitted, and work efficiency can be improved.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of a bias cutter according to the present invention.

FIG. 2 is a side view of the bias cutter as viewed from the direction of arrow A in FIG.

FIG. 3 is a plan view showing a bias cutter provided with a conventional cassette type let-off device.

FIG. 4 is a side view of the bias cutter as viewed from the direction of arrow B in FIG. 3;

FIG. 5 is a rear view of the bias cutter as viewed from the direction of arrow C in FIG. 4;

FIG. 6A is a plan view showing a bias cutter provided with a conventional stock roll type doublelet-off device,
(B) is a side view thereof.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 let-off device 2 cutting device 3 carry-in device 4 splice device 5 take-up device 6 bearing 7 turning center pin 8 rail 9 wheels 10 arc-shaped guide rail 11 guide roller 12 rail 13 wheels 14 connecting device 15a, 15b Notch for introducing low lift etc. Part 16 frame 21 cassette 22 stock roll 23 liner roll 24 low lift 25 slide stand 26 ball caster 27 locking device 30 rail 31 sensor

Claims (2)

(57) [Claims] 1. A bias cutter equipped with let-off device of the cassette type to be mounted as a set and stock roll and the liner roll, alone about a pivot center
A pivotable loading device and co-centered with the loading device
An arc-shaped guide rail, and along the guide rail
And a let-off device that is movably provided, is capable of mounting two cassettes , and is provided with a cutout for mounting the cassettes by a low lift or the like toward the turning center. And bias cutter. 2. The bias cutter according to claim 1, further comprising a connecting device for connecting and turning the let-off device and the loading device.