JP3265248B2 - Belt sleeve cutting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a belt sleeve cutting apparatus for cutting a vulcanized cylindrical belt sleeve to a predetermined width in order to manufacture a plurality of belts having a predetermined width.

[0002]

2. Description of the Related Art A method of manufacturing one or a plurality of belts by cutting a vulcanized cylindrical belt sleeve into a predetermined width is disclosed in, for example, JP-A-4-201066. A belt sleeve cutting device is used.
This apparatus is designed to make a belt sleeve wound around a main shaft roll and a sub shaft roll move around, and a cutter cuts into the moving belt sleeve so that the belt sleeve is cut over the entire circumference. Has become.

In the case of a belt sleeve having a short circumference, the belt sleeve is press-fitted into a driving roll to form a fitted state, and a cutter is attached to the belt sleeve while the belt sleeve is rotated integrally with the driving roll. Let go of
Devices for cutting belt sleeves have also been used.

[0004]

In such an apparatus for cutting a belt sleeve, the belt sleeve is run in a state of being fitted to a roll or wound around a roll, and the belt sleeve is moved by a cutter. When the cutter moves more than the thickness of the belt sleeve because it is cut, the cutter cuts into the roll,
Rolls and cutters may be damaged. Conversely, if the cutter is moved by a distance smaller than the thickness of the belt sleeve, the belt sleeve may not be reliably cut. For this purpose, the thickness of the belt sleeve fitted or wound around the roll is accurately grasped, and the cutter is used for the thickness of the belt sleeve.
It is necessary to move the roll accurately in the radial direction.

However, if a device for accurately measuring the thickness of the belt sleeve fitted or wound on the roll or the position of the cutter is provided, the belt sleeve cutting device itself may be enlarged. In addition, there is a problem that economic efficiency is impaired.

The present invention solves such a problem, and an object of the present invention is to accurately measure the thickness of the belt sleeve to be cut or the position of the cutter in a simple configuration, and therefore, the cutter can be used. It is an object of the present invention to provide a belt sleeve cutting device that does not have the possibility of damaging the roll or the roll.

[0007]

According to a first aspect of the present invention, there is provided an apparatus for cutting a belt sleeve, comprising a driving roll on which a belt sleeve to be cut is mounted. A traveling mechanism that is adapted to travel in the circumferential direction, and a cutter that is movable in a direction to approach and separate from a driving roll of the traveling mechanism, are configured to be able to move along the driving roll, The belt sleeve cutting mechanism, which detects the distance from the axis of the drive roll to the cutter, and the belt sleeve cutting mechanism, which is integrated with the cutter of the belt sleeve cutting mechanism, comes into contact with and separates from the belt sleeve, and is mounted on the drive roll. A belt sleeve detecting mechanism for detecting that the cutter has reached a predetermined distance from the surface of the belt sleeve, and a belt sleeve cutting mechanism for detecting the cutter. Calculating the maximum outer diameter of the belt sleeve mounted on the drive roll based on the distance from the shaft center of the drive roll to the cutter and the distance from the belt sleeve surface to the cutter detected by the belt sleeve detection mechanism. Ri Na and a control unit, the operation
The maximum outer diameter calculated by the control unit and a preset bell
When the difference from the maximum outer diameter of the sleeve is within the specified value
In, the belt sleeve is cut by the cutter,
If the difference is equal to or greater than the specified value, the belt three
The belt sleeve is not cut by the belt cutting mechanism.
It features that it is so.

[0008]

A belt sleeve cutting device according to a second aspect of the present invention, a belt sleeve is fitted to a driving roll of the traveling mechanism and is integrally rotated.

[0010] In the belt sleeve cutting device according to a third aspect of the present invention, the traveling mechanism is provided with a tension roll disposed so as to be capable of coming and going with respect to the drive roll. It is wound around a tension roll and moves around.

[0011]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a partially cutaway plan view showing an embodiment of a belt sleeve cutting device according to the present invention, and FIG. 2 is a partially cutaway front view thereof. This belt sleeve cutting device cuts a vulcanized rubber or urethane cylindrical belt sleeve into a predetermined width dimension, and transmits a belt such as a transmission toothed belt, a transmission flat belt, a transmission V-ribbed belt, or the like. Is manufactured at a predetermined width, and a belt 49 to be cut is mounted thereon, and a traveling mechanism 10 for orbiting the belt sleeve and a belt sleeve traveled by the traveling mechanism 10 are cut by a cutter 49. And a belt sleeve cutting mechanism 40.

The traveling mechanism 10 is disposed on a gantry 61. The driving roll 11 is disposed horizontally on the gantry 61 in a rotatable state, and the tension roll 18 (parallel to the driving roll 11). FIG. 1).
The drive roll 11 is made of steel, and a mantle 72 made of urethane rubber is attached to the drive roll 11 in a fitted state. One end of the driving roll 11 is
The rotation connecting member 12 is
It is connected to a rotating shaft 17 supported by a support 13 arranged above. Therefore, the drive roll 11 is supported by the support 13
Is supported horizontally in a cantilevered state. The rotation connecting member 12 is provided with a drive motor 1 disposed on a side of the gantry 61.
4 is transmitted by the belt 15 and rotated.

A drive roll supporting mechanism 2 is provided on the gantry 61 so as to engage with an end of the drive roll 11 that is not connected to the rotary connecting member 12 to support the end.
0 is provided. FIG. 3 shows the drive roll support mechanism 20.
FIG. 5 is a side view of the belt sleeve cutting device as viewed from the side. The drive roll support mechanism 20 has a support base 21 provided on a gantry 61,
A pair of slide guides 22 are respectively provided along a direction orthogonal to the axial direction of the drive roll 11. Each slide guide 22 has a slide guide 2
The slide table 23 is supported horizontally so as to be able to slide along 2. A single slide guide 24 (see FIGS. 2 and 3) is provided on the slide table 23 along the same direction as the axial direction of the drive roll 11, and slides along the slide guide 24. The slider 25 is arranged so as to be able to perform the operation. A support rod 26 is rotatably supported above the slider 25 along the axial direction of the drive roll 11. At an end of the support rod 26 close to the drive roll 11, an engagement portion 26 a that protrudes in a conical shape to be engaged with the end of the drive roll 11 is provided.

A slider 25 for supporting the support rod 26 in a horizontal state is moved in the direction of coming and coming from the drive roll 11 by a contact / separation hydraulic cylinder 27 horizontally supported by a slide table 23 on the far side of the drive roll 11. It is slid. Also, as shown in FIGS. 1 and 3, the slide table 23 is provided on a side of the support rod 26 on the side of the tension roll 18 with a retraction hydraulic cylinder 28 disposed along a direction orthogonal to the support rod 26. Thus, it is slid in a direction orthogonal to the support rod 26. The support rod 26 is mounted on the evacuation hydraulic cylinder 2.
8, the slide roller 8 is slid from a state facing the drive roll 11 to a retracted position which is moved in parallel in a direction away from the tension roll 18. Therefore, with the support rod 26 facing the drive roll 11, the slider 25 is moved by the hydraulic cylinder 27 for contact / separation to the drive roll 1.
1, the engaging portion 26a of the support rod 26 is engaged with the free end of the cantilevered drive roll 11, and the free end is supported by the support rod 26. It is rotatably supported by.

The tension roll 18 disposed parallel to the drive roll 11 on the side of the drive roll 11 comes into contact with and separates from the drive roll 11 by a tension roll moving mechanism 30. FIG. 4 is a partially cutaway rear view of the tension roll moving mechanism 30. As shown in FIGS. 1, 3 and 4, the tension roll moving mechanism 30
The support base 3 that supports the tension roll 18 in a cantilever state.
One. The support table 31 is configured to be slidable toward and away from the drive roll 11 by a pair of guide rods 32 arranged on the gantry 61 in a direction perpendicular to the tension roll 18. Support stand 3
1, a support wall 31a is provided vertically along one side edge so as to be orthogonal to the tension roll 18, and the drive roll 11 above the support wall 31a is provided.
The tension roll 18 is rotatably supported horizontally in a cantilevered state on a side portion close to.

The support table 31 is slid along a pair of guide rods 32 so as to come into contact with and separate from the drive roll 11 by a tension roll contact / separation air cylinder 33 disposed on a frame 61 on the far side of the drive roll 11. When the support base 31 is slid to the position closest to the drive roll 11 by the tension roll contact / separation air cylinder 33, the tension roll 18 supported by the support base 31 is driven. This is a proximity position that is slightly spaced from the roll 11.

The tension roll 18 is used to drive the drive roll 11.
The belt sleeve to be cut is wound along with the drive roll 11 in a state close to the above, and is moved away from the drive roll 11 so that an appropriate tension is applied to the belt sleeve.

A belt sleeve cutting mechanism 40 is provided on the front side of the drive roll 11 opposite to the back side where the tension roll 18 is provided. FIG. 5 is a partially cutaway side view of the belt sleeve cutting mechanism 40. The belt sleeve cutting mechanism 40 has a support base 42 slidably supported on a gantry 61 by a pair of slide guides 41 arranged in parallel with the drive roll 11. On the gantry 61, a ball screw 43 is arranged between the slide guides 41 in parallel with each slide guide 41 so as to be able to rotate forward and backward. The support base 42 is provided with a screw block 42a that is screw-coupled to the ball screw 43. The forward / reverse rotation of the ball screw 43 causes the screw block 42a to slide along each slide guide 41, and the entire support base 42 It is slid along the drive roll 11.

As shown in FIGS. 1 and 2, one end of the ball screw 43 is connected to a servomotor 44 for moving in the width direction. It is designed to rotate in reverse.

As shown in FIG. 5, a pair of slide guides 42b are provided on the support table 42 along a direction orthogonal to the traveling roll 11.
A cutter table 45 is slidably supported by 2b. A ball screw 46 is arranged between the two slide guides 42b in parallel with each slide guide 42b, and the cutter base 45 is provided with a screw block 45a that is screw-coupled to the ball screw 46. Ball screw 46
Is inserted under the drive roll 11, and one end thereof is disposed close to the drive roll 11.

The rotation of the cutting servomotor 47 (see FIG. 1) is transmitted via a belt 48 to the end of the ball screw 46 opposite to the end close to the drive roll 11. The cutting servomotor 47 rotates the ball screw 46 forward and backward. Therefore, the cutter table 45 comes into contact with and separates from the drive roll 11 by the forward / reverse rotation of the ball screw 46 due to the forward / reverse rotation of the cutting servomotor 47.

A disk-shaped cutter 49 is rotatably mounted on one side surface of the upper portion of the cutter table 45 by a support pin 49a. The support pin 49a
The cutter 49 is supported horizontally with respect to the cutter table 45, and is vertically supported on the cutter table 45 such that a part of the cutter 49 projects from the cutter table 45 toward the drive roll 11.

The cutting servomotor 47 is configured to output a pulse signal corresponding to the number of revolutions, and the pulse signal is output to an arithmetic control unit (not shown). The arithmetic and control unit controls the cutter 49 provided on the cutter table 45 from the axis of the drive roll 11 based on the pulse signal output from the cutting servomotor 47 with reference to the position corresponding to the axis of the drive roll 11. The distance to the center is detected.

The cutter table 45 is provided with a belt sleeve detecting mechanism 50 for detecting the relative position between the surface of the belt sleeve fitted or wound around the drive roll 11 and the cutter 49. This belt sleeve detection mechanism 5
0 is provided with a belt sleeve detecting air cylinder 51 horizontally mounted on a side surface of the cutter table 45 on the far side of the drive roll 11. The air cylinder 51 for detecting the belt sleeve includes a piston rod 51.
a is disposed so as to face the drive roll 11,
When the piston rod 51a advances, it approaches the drive roll 11. Piston rod 5
1a, a measuring pin 52 is attached to the piston rod 51.
a is horizontally connected concentrically. Measuring pin 52
Is a support block 45b provided on the cutter table 45.
Is horizontally inserted through a through hole 45c provided so as to extend horizontally through the drive roll 11 side. The through hole 45c through which the measurement pin 52 is inserted is provided at the same height position as the support pin 49a that supports the disk-shaped cutter 49, and is therefore at the same height as the center of the cutter 49.

Air cylinder 51 for belt sleeve detection
Are biased so that the piston rod 51a is advanced by a predetermined amount, and are advanced by air pressure. A detection switch (not shown) that operates when the piston rod 51a is retracted by a predetermined amount is provided. Therefore, the cutter table 4
5 approaches the drive roll 11, the measurement pin 52 comes into contact with the belt sleeve fitted or wound around the drive roll 11, and the cutter table 45 approaches the drive roll 11. That is, the piston rod 51a is retracted, and the detection switch provided on the belt sleeve detection air cylinder 51 is turned on. The detection switch is set to be turned on when the tip of the measuring pin 52 approaches a predetermined distance from the center of the cutter 49.

As the belt sleeve detecting air cylinder 51 having such a switch, for example, SMC
The brand name “CJ2 series” manufactured by Co., Ltd. is preferably used.

Air cylinder 51 for belt sleeve detection
Are output to an arithmetic control unit (not shown) to which a pulse signal output from the cutting servomotor 47 is input. The arithmetic and control unit detects the detection result of the detection switch provided on the belt sleeve detection air cylinder 51 and the servo motor 4
7, the distance between the axis of the drive roll 11 and the surface of the belt sleeve 71, that is, the maximum outer diameter of the belt sleeve 71 attached to the drive roll 11, is calculated. ing.

FIG. 6 is a flowchart for explaining the operation of the belt cutting device having such a configuration. When cutting the belt sleeve, as shown in FIG.
The driving roll 11 has a cylindrical mantle 7.
2 are fitted. When the mantle 72 is fitted to the drive roll 11 (see step S1 in FIG. 6, the same applies hereinafter), the code number (00 to 99) of the belt sleeve 71 to be cut is input to the arithmetic control unit. (Step S2). When the code number of the belt sleeve 71 is input, the arithmetic control unit stores a constant X of the maximum outer diameter of the belt sleeve 71 corresponding to the code number (step S3). The constant X is set in advance as a maximum outer diameter when the belt sleeve 71 is fitted to the mantle 72, based on the thickness of the belt sleeve 71.

When the mantle 72 is fitted to the drive roll 11, the hydraulic cylinder 27 for contact / separation in the drive roll support mechanism 20 is driven so that the slider 25 supporting the support rod 26 moves away from the drive roll 11. The drive roller 11 is slid so that the engagement portion 26a of the support rod 26 is separated from the end of the drive roll 11. Then, in such a state, the evacuation hydraulic cylinder 28 is driven in a direction to advance the piston rod. As a result, the entire slide table 23 provided with the slider 25 is slid to the side of the drive roll 11, and the support rod 26 is in a retracted position where the support rod 26 does not face the drive roll 11. In such a state, the mantle 72 is fitted from the opened end of the drive roll 11, and the belt sleeve 71 is fitted to the mantle 72.

When the mantle 72 and the belt sleeve 71 are fitted to the drive roll 11 in this way, a switch for operating the drive roll support mechanism 20 is turned on (step S4). Thereby, the evacuation hydraulic cylinder 2
8 is driven, and the entire slide table 23 is
Slides to a position close to the end of the
The contact / separation hydraulic cylinder 27 is driven to
Is brought close to the drive roll 11. Then, the engaging portion 26 a provided at the end of the support rod 26 is engaged with the end of the drive roll 11. As a result, the drive roll 11 is supported by the support rod 26, and the belt sleeve 71 is fixed (step S5).

In such a state, the cutting width is set so that the belt sleeve 71 is automatically cut to a predetermined width by the belt sleeve cutting device, and the switch for automatic operation is turned on ( Step S6). As a result, the cutting servomotor 47 of the belt sleeve cutting mechanism 40 is driven to rotate forward, and the cutter table 45 on the support table 42 is slid so as to approach the drive roll 11. Then, the measuring pin 52 of the belt sleeve detecting mechanism 50 provided on the cutter table 45 comes into contact with the surface of the belt sleeve 71 fitted to the driving roll 11. Thereafter, when the cutter table 45 is further slid, the measuring pin 52 is pressed by the belt sleeve 71, and the piston rod 51a of the air cylinder 51 for belt sleeve detection is retracted, and the piston rod 51a is moved by a predetermined amount. Is retracted, the detection switch provided on the belt sleeve detection air cylinder 51 is turned on (step S7).

When the detection switch is turned on, the arithmetic and control unit operates the drive roll 1 at the time when the detection switch is turned on.
The distance from one axis to the center of the cutter 49 is calculated based on the pulse signal output from the cutting servomotor 47. Then, based on the calculated distance between the center of the cutter 49 and the axis of the drive roll 11 and the distance from the center of the cutter 49 to the tip of the measuring pin 52 when the detection switch is turned on from the center of the cutter 49. , The maximum outer diameter Y of the belt sleeve 71 is calculated. The maximum outer diameter Y of the belt sleeve 71 is calculated from the distance from the axis of the drive roll 11 to the center of the cutter 49, and from the center of the cutter 49 when the detection switch is turned on from the center of the cutter 49. It is calculated by doubling the difference from the distance to the tip. The maximum outer diameter Y of the belt sleeve 71 calculated in this way is stored in the arithmetic and control unit (step S8).

When the maximum outer diameter Y of the belt sleeve 71 fitted to the driving roll 11 is calculated as described above,
The arithmetic control unit compares a constant X of the maximum outer diameter of the belt sleeve 71 stored in advance with the calculated maximum outer diameter Y of the belt sleeve 71, and determines the difference between the two as a specified value (1 in this embodiment). .0 mm) is checked (step S9). The maximum outer diameter Y of the belt sleeve 71 attached to the drive roll 11 is larger than a prescribed value (1.0 mm in the present embodiment) with respect to a preset constant X of the maximum outer diameter. In this case, the cutter table 45 is moved to a predetermined origin position (standby position) farthest from the drive roll 11 (step S1).
0).

As described above, the actual maximum outer diameter Y of the belt sleeve 71 fitted to the driving roll 11 is a specified value (1.0 m in this embodiment) with respect to the input maximum outer diameter X.
m) If there is an error greater than or equal to m), it is determined that the code number of the belt
Since 5 is returned to the origin position, the operator recognizes that the code number of the belt sleeve 71 has been input incorrectly, and the formal code number of the belt sleeve 71 is input again. As a result, there is no possibility that the cutting operation of the belt sleeve 71 by the cutter 49 is performed in a state where the belt sleeve 71 fitted to the driving roll 11 does not match the input code number. Is not cut securely, or the cutter 49
There is no possibility that the mantle 72 will be damaged.

On the other hand, the difference between the maximum outer diameter Y of the belt sleeve 71 attached to the driving roll 11 and a predetermined constant X of the maximum outer diameter of the belt sleeve 71 is a specified value (this embodiment). If it is smaller than 1.0 mm), it is determined that the belt sleeve 71 of the input code number is fitted to the drive roll 11, and is moved to the cutting start position (step S1).
1) While rotating the drive roll 11, the cutter table 45 is slid in a direction approaching the drive roll 11 to a set position corresponding to the code number. As a result, the cutter 49 enters the rotating belt sleeve 71, and the belt sleeve 71 is cut (step S12).

At this time, the belt sleeve 71 can be cut using the calculated value Y instead of the constant X corresponding to the code number.

In this manner, the cutter 49 cuts the belt sleeve 71 and moves the drive roll 1 to the set position.
When the cutter table 45 is moved in the direction approaching 1, the rotation direction of the cutting servomotor 47 is reversed, and the cutter table 45 is moved away from the drive roll 11. And
When the cutter 49 is moved out of the belt sleeve 71, the rotation of the cutting servomotor 47 is stopped, and the cutter table 45 is stopped. Thereafter, the servomotor 44 for widthwise movement is driven to rotate forward so that the support table 42 provided with the cutter table 45 is slid along the drive roll 11 by the cutting width of the belt sleeve 71. When the support base 42 is slid along the drive roll 11 by a distance corresponding to the cutting width of the belt sleeve 71 by the width-direction moving servomotor 44, the cutter base 45 is moved to the drive roll 11 as described above.
The belt sleeve 11, which slides in a direction approaching and rotates with the drive roll 11, is cut by the cutter 49. Hereinafter, the same operation as that described above is repeated, and the belt sleeve 51 is cut to a predetermined cutting width.

When the entire belt sleeve 71 fitted to the drive roll 11 is cut to a predetermined cutting width in this way, the slide table 25 of the drive roll support mechanism 20 separates from the drive roll 11. In the direction, the engagement between the support rod 26 and the drive roll 11 is released, and the slide table 23 on which the slider 25 is supported is moved to the retracted position. In such a state, the belt fitted to the drive roll 11 and cut to a predetermined width is removed from the mantle 72 fitted to the drive roll 11.

In the belt sleeve cutting apparatus according to the present embodiment, the belt sleeve 71 is wound around the drive roll 11 and the tension roll 18 while the belt sleeve 71 is wound.
Can be cut to a predetermined width dimension. In this case, the support base 31 approaches the drive roll 11 by the tension roll contact / separation air cylinder 33 of the tension roll moving mechanism 30 so that the tension roll 18 is closest to the drive sleeve 11. Will be slid. Then, the mantle 72 is fitted to the drive roll 11, and the belt sleeve 71 is wound around the mantle 72 and the tension roll 18. Then, the tension roll contact / separation air cylinder 33 is driven,
The support base 31 is slid in a direction away from the drive roll 11, and an appropriate tension is applied to the belt sleeve 71 wound around the mantle 72 fitted on the drive roll 11 and the tension roll 18.

Thus, the belt sleeve 71 is
When the belt sleeve 71 is wound around the mantle 72 fitted to the drive roll 11 and the tension roll 18, the belt sleeve 71 is cut in the same manner as the above-described operation.

In the belt sleeve cutting device of the present embodiment, the belt sleeve 7 having a maximum outer diameter of 25 mm to 125 mm is used.
1 can be cut, but the design can be changed so that the belt sleeve 71 having a larger maximum outer diameter can be cut.

[0043]

As described above, the belt sleeve cutting apparatus of the present invention utilizes the relative position between the cutter and the drive roll which comes into contact with and separates from the drive roll. The maximum outer diameter of the belt sleeve attached to the drive roll can be detected only by providing a belt detection mechanism for detecting that the surface of the belt sleeve attached to the belt sleeve has reached a predetermined distance. Therefore, there is no possibility of increasing the size of the belt sleeve cutting device, and
There is no risk that the economy will be impaired.

[Brief description of the drawings]

FIG. 1 is a partially broken plan view showing an example of an embodiment of a belt sleeve cutting device of the present invention.

FIG. 2 is a partially cutaway front view of the belt sleeve cutting device.

FIG. 3 is a side view of the belt sleeve cutting device.

FIG. 4 is a partially cutaway rear view of a tension roll moving mechanism provided in the belt sleeve cutting device.

FIG. 5 is a partially cutaway side view of a belt sleeve cutting mechanism of the belt sleeve cutting device.

FIG. 6 is a flowchart for explaining the operation of the belt sleeve cutting device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Running mechanism 11 Drive roll 13 Support stand 14 Drive motor 17 Rotation axis 18 Tension roll 20 Drive roll support mechanism 21 Support stand 22 Slide guide 23 Slide stand 24 Slide guide 25 Slider 26 Support rod 26a Engagement part 27 Hydraulic cylinder for contact / separation 28 Evacuation Hydraulic Cylinder 30 Tension Roll Moving Mechanism 31 Support Stand 32 Guide Rod 33 Air Cylinder for Tension Roll Contact / Separation 40 Belt Sleeve Cutting Mechanism 41 Slide Guide 42 Support Stand 43 Ball Screw 44 Width Direction Movement Servo Motor 45 Cutter Stand 45c Through Hole 46 Ball Screw 47 Cutting Servo Motor 48 Belt 49 Cutter 49a Support Pin 50 Belt Sleeve Detection Mechanism 51 Belt Sleeve Detection Air Cylinder 51a Piston B De 52 measuring pin 71 belt sleeve 72 mantle

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-5-138592 (JP, A) JP-A-5-138593 (JP, A) JP-A-8-290389 (JP, A) JP-A-4- 201066 (JP, A) (58) Field surveyed (Int. Cl. ⁷ , DB name) B26D 3/00-3/30

Claims (3)

(57) [Claims] 1. A driving mechanism having a drive roll on which a belt sleeve to be cut is mounted, wherein the belt sleeve travels in a circumferential direction by rotation of the drive roll, and a driving roll of the traveling mechanism. A belt capable of moving in the direction of coming and going with respect to the drive roll can move along the drive roll, and the distance from the axis of the drive roll to the cutter can be detected. The sleeve cutting mechanism and the cutter of the belt sleeve cutting mechanism are integrated with and separated from the belt sleeve to detect that the cutter has reached a predetermined distance with respect to the surface of the belt sleeve mounted on the drive roll. A belt sleeve detecting mechanism, a distance from the axis of the drive roll to the cutter detected by the belt sleeve cutting mechanism, and a belt sleeve detecting mechanism. From the belt sleeve surface to be detected by the structure based on the distance to the cutter, Ri Na and and a calculation control unit for calculating a maximum outer diameter of the belt sleeve mounted on the drive roll, calculated by the calculation control unit
The maximum outside diameter that comes out and the maximum of the preset belt sleeve
If the difference from the outer diameter is within the specified value,
The belt sleeve is cut by the
If it is above, by the belt sleeve cutting mechanism
Belt sleeve cutting apparatus wherein <br/> the cutting of the belt sleeve is prevented is performed. 2. The belt sleeve cutting device according to claim 1, wherein a belt sleeve is fitted to a drive roll of the traveling mechanism and is integrally rotated. 3. The traveling mechanism is provided with a tension roll disposed so as to be capable of coming in contact with and separating from the drive roll, so that a belt sleeve is wound around the drive roll and the tension roll and moves around. The belt sleeve cutting device according to claim 1, wherein the belt sleeve cutting device comprises: