JP4739889B2 - Belt sleeve material width cutting device - Google Patents

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a belt sleeve material width cutting device that cuts a belt sleeve material in which a plurality of transmission belts are integrally formed side by side in a width direction in order to manufacture a transmission belt such as a V belt. .

Transmission belts are used in devices that require transmission of driving force, such as various home appliances, information equipment, machine tools, and the like, and transmission belts of various shapes are manufactured according to applications.
Among such transmission belts, a transmission belt of a type in which V-grooves having a V-shaped cross section that is continuous over the entire circumference are arranged in the width direction is usually provided with grooves that are continuous over the entire circumference in the width direction. A wide belt sleeve material that can be divided into a plurality of transmission belts by molding is formed, and then the belt sleeve material is divided into individual transmission belts by cutting into a predetermined width dimension over the entire circumference. The
Conventionally, as the belt sleeve material width cutting device, the belt sleeve material is circulated and moved in a state where each groove portion is positioned on the outer peripheral side, and the cutter is pressed against the groove portion for each predetermined width dimension. Is known that cuts all around. In addition, the cutting device is provided with an image pickup unit arranged integrally with the cutter, and an image obtained by picking up an image of the groove portion of the belt sleeve material moving around, and a belt at a position that can be accurately cut along the center line of the groove portion. Also known is a belt sleeve material width cutting device that calculates the positional deviation of the cutter in the belt sleeve width direction based on a pre-captured image of the groove portion of the sleeve material and cuts while correcting the cutter position. (Refer to patent document 1) It is possible to cut | disconnect correctly along the centerline of a groove part, without a skilled worker.

Japanese Patent No. 30223387

However, in the case of using the belt sleeve material width cutting device described in Patent Document 1, when the belt sleeve material is moving around, the groove portion necessary for calculating the image shift at an arbitrary imaging timing. For example, since the belt sleeve material has a continuous shape in the circumferential direction, the shape is limited to cutting. Therefore, it is difficult to cut a belt sleeve material having a discontinuous portion in the circumferential direction, such as an intermittent protrusion belt, while automatically performing cutting position alignment using a captured image.
Therefore, in order to cut such a belt sleeve material, an operator visually checks the position of the blade and the belt sleeve material directly or using a projector, and cuts while finely adjusting the position of the blade. There is a need. In this case, it is difficult for a skilled worker to finely adjust the position of the blade edge so that the belt sleeve material moving around can be cut at an accurate position, and there is a possibility that the cutting accuracy may be lacking. In addition, the worker cannot leave the belt sleeve material width cutting device during cutting and cannot engage in other work, thus preventing labor saving in the transmission belt manufacturing process.

  In view of the above circumstances, the present invention provides a belt sleeve material capable of cutting a belt sleeve material having a discontinuous portion in the circumferential direction, such as an intermittently protruding belt, without the operator performing cutting position alignment. An object is to provide a width cutting device.

Means and effects for solving the problems

The belt sleeve material width cutting device according to the present invention comprises a belt sleeve material provided with a plurality of discontinuous protrusions arranged side by side in the width direction and aligned in the circumferential direction over the entire circumference. A belt sleeve material revolving means for revolving around each protrusion on the outer peripheral side, and a cutter disposed facing the belt sleeve material reciprocally moved by the belt sleeve material revolving means; Cutter pressing means for pressing the cutter against the belt sleeve material moving around and cutting the belt sleeve material over the entire circumference, cutter slide means for moving the cutter in the width direction, and circular movement Imaging means disposed integrally with the cutter so that the projection of the belt sleeve material and the cutting position by the cutter can be imaged; An image of the protrusion imaged by the imaging means during the circular movement of the belt sleeve material when the cutter is driven by the cutter slide means and moved to a temporarily determined position before cutting, and the cutter is scheduled to be cut Based on the pre-captured image of the protrusion when the belt sleeve material moves around when the belt sleeve material is in a position, the shift in the width direction of the two images is calculated, and if there is a shift, the shift is calculated. Control means for controlling the cutter slide means to further move the cutter so as to correct, and the imaging means images at least one of the plurality of discontinuous protrusions. In addition, taking an image of the belt sleeve material at the time of circular movement in conjunction with the rotation speed of the belt sleeve material in conjunction with the time during which the shutter is open. And butterflies.

  According to this configuration, in the belt sleeve material width cutting device, first, the belt sleeve material provided with the plurality of protrusions arranged in a row in the circumferential direction is arranged in the width direction. While attached to the moving means, the cutter arranged opposite to the belt sleeve material and the imaging means arranged integrally with the cutter are simultaneously driven by the cutter slide means and moved to a temporary position before cutting. To do. The cutter slide means moves and positions the cutter in the width direction of the attached belt sleeve material and can be controlled by the control means.

  Next, the shutter is operated for a time set based on the circumferential speed of the belt sleeve material that circulates so that at least one of the protrusions of the belt sleeve material is imaged by the imaging means at the pre-determined position before cutting. And the belt sleeve material is imaged. Therefore, the protrusion of the belt sleeve material is always shown in the captured image. Based on the image captured at the provisionally determined position before cutting and the image previously captured of the protrusion during the circular movement when the cutter is at the scheduled cutting position, the control means From the difference in the position of the protrusion shape, it is calculated how much the image captured at the temporarily determined position is shifted in the width direction as compared with the image captured at the planned cutting position. Here, the scheduled cutting position is a target cutter position where the cutter is pressed against the belt sleeve material by the cutter pressing means so as to be cut accurately with a predetermined width dimension. Since the imaging means is integrally arranged with respect to the cutter, the deviation in the width direction of the captured image obtained by the above calculation is when the cutter is in the provisional position and the cutter is in the planned cutting position. It can be regarded as a deviation from the target cutting position. The control means controls the cutter slide means to further move the cutter so as to correct the deviation in the width direction obtained by the calculation.

  After the cutting position of the cutter is automatically adjusted as described above, the cutter is pressed against the belt sleeve material that moves around by the cutter pressing means, and is cut in the thickness direction from the protrusion side surface of the belt sleeve material. . Since the belt sleeve material moves around, the cut by the cutter is formed over the entire circumference.

  In this way, by setting the time during which the shutter of the imaging unit is open based on the circumferential speed of the belt sleeve material, the protrusions necessary for calculating the image deviation in the image to be calculated by the control unit Because the shape is always imaged, it is not limited to cutting when the belt sleeve material has a continuous shape in the circumferential direction. The belt sleeve material having a shape can be cut with high accuracy while automatically performing cutting position alignment using a captured image. In addition, since cutting can be performed while automatically performing cutting position alignment, manual cutting position alignment work can be eliminated, cutting errors by the operator can be prevented, and width cutting work of the belt sleeve material having intermittent protrusions Can be saved.

  In the belt sleeve material width cutting apparatus according to the present invention, the time during which the shutter of the imaging unit is open is set to be equal to or less than the time required for the belt sleeve material to make one turn. desirable.

  According to this configuration, within the time during which the shutter is open, out of the projecting portions of the belt sleeve material that circulates, the same projecting portion does not pass through the imaging range more than once, thereby reducing the extra imaging time. And cutting time can be shortened.

  Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings.

  FIG. 1 is a front view showing an example of an embodiment of a width cutting device for a belt sleeve material of the present invention, and FIG. 2 is a side view thereof. FIG. 5 is a view in the Y1 direction of the belt sleeve material 10 in the wound state shown in FIG.

  In this belt sleeve material width cutting device, a belt sleeve material in which a row of protrusions composed of a plurality of conical protrusions 10a aligned in the circumferential direction over the entire circumference is arranged in the width direction on the outer peripheral side portion. 10 (see FIG. 5) is cut to produce a plurality of tractor belts having a predetermined width.

  The belt sleeve material width cutting device includes a belt sleeve material revolving means 20 for revolving the belt sleeve material 10, and a cutter disposed facing the belt sleeve material 10 revolving around the belt sleeve material revolving means 20. 33, a pair of air cylinders 51 constituting cutter pressing means that presses the cutter 33 against the belt sleeve material 10 that is orbiting and cuts the belt sleeve material 10 over the entire circumference, and a belt sleeve that orbits and moves Cutter slide means 40 for moving the cutter 33 together with the air cylinder 51 along the width direction of the material 10 is provided.

  The belt sleeve material circumferential moving means 20 has a rotary pulley 22 and a tension pulley 24 (see FIG. 2), which are horizontally disposed on a frame 31. The rotating pulley 22 is rotatably supported on the gantry 31 in a horizontal cantilever state, and the tension pulley 24 is disposed at an appropriate interval in the horizontal direction from the rotating pulley 22. The tension pulley 24 is rotatable along the horizontal direction.

The belt sleeve material 10 is wound around the rotary pulley 22 and the tension pulley 24 with a plurality of protrusions 10a provided on one peripheral surface positioned on the outer peripheral side. The tension pulley 24 is structured to be movable, unlike the fixed rotation pulley 22, and the distance between both shafts can be expanded and contracted. As a result, when the belt sleeve material 10 is attached or removed after being cut, the interval can be reduced, and the tension acting on the wound belt sleeve material can be loosened to allow easy attachment / detachment. Tension is applied to the belt sleeve material 10 by moving the tension pulley 24 around which the belt sleeve material 10 is wound in the horizontal direction. The rotation of the motor 23 (see FIG. 1) disposed on the gantry 31 is transmitted to the rotary pulley 22 via the belt transmission mechanism 25 and rotated in a predetermined direction.
Here, the belt sleeve material width cutting device according to the present invention is not limited to the biaxial structure provided with the tension pulley 22, and depending on the length of the belt sleeve material to be cut, the type of material, the use space of the device, etc. A belt sleeve material width cutting device having a uniaxial structure in which only the pulley 22 is wound around the belt sleeve material may be used.

  On the gantry 31, a mandrel 26 is disposed concentrically with the rotary pulley 22 so as to face the front end surface of the rotary pulley 22 in a cantilever state. The mandrel 26 is slidable so as to be in pressure contact with the end face of the rotary pulley 22, and is pressed against the end face of the rotary pulley 22, thereby preventing vibration during rotation of the rotary pulley 22. .

  In the vicinity of the rotary pulley 22, a cutter 33 (see FIG. 2) that cuts the belt sleeve material 10 that moves around is disposed so as to face the outer peripheral surface of the rotary pulley 22. The cutter 33 is attached to the tip end portions of a pair of air cylinders 51 serving as cutter pressing means, and each air cylinder 51 is attached to the upper part of the slide table 42 of the cutter slide means 40.

  The slide base 42 constituting the cutter slide means 40 is provided so as to be slidable along a pair of guide rails 41 disposed on the upper surface of the gantry 31 in a state parallel to the axial direction of the rotary pulley 22. A ball screw 43 parallel to each guide rail 41 is inserted through the lower part of the slide table 42. The ball screw 43 is in a state where it is screwed to the slide base 42. One end of the ball screw 43 is connected to a servo motor 44 provided on the pedestal 31 and capable of rotating in the forward and reverse directions, so that the ball screw 43 is rotated forward and backward as the servo motor 44 rotates forward and backward. It has become. When the ball screw 43 is rotated forward and backward by the servo motor 44, the cutter slide means 40 configured in this way is moved in a direction in which the slide base 42 approaches and separates from the servo motor 44 along each guide rail 41. , Slide each.

  A pair of air cylinders 51 provided on the upper part of the slide table 42 are arranged in a state orthogonal to the axial center direction of the rotary pulley 22, and the tip of the piston rod of each air cylinder 51 faces the outer peripheral surface of the rotary pulley 22. It is in the state. A cutter 33 for cutting the belt sleeve material 10 wound around the rotary pulley 22 is attached between the tip portions of both piston rods. The cutter 33 is moved in a direction approaching and separating from the outer peripheral surface of the rotary pulley 22 by a pair of air cylinders 51, and the cutting edge thereof is vertical. Each air cylinder 51 is driven synchronously, and when each piston rod is moved in a direction approaching the rotary pulley 22, the vertical cutting edge of the cutter 33 moves around. The belt sleeve material 10 is pressed in the thickness direction, thereby cutting the belt sleeve material 10 over the entire circumference.

An imaging unit 60 constituted by a CCD camera 61 and a macro zoom lens 62 is attached to the upper part of the slide table 42 so as to be positioned above the cutting edge of the cutter 33. The CCD camera 61 is directed downward so that the outer peripheral surface of the rotary pulley 22 facing the cutter 33 becomes an imaging region, and the center line of the imaging region of the CCD camera 61 coincides with the cutting position by the blade edge of the cutter 33. Have been adjusted so that. As a result, the portion of the belt sleeve material located on the center line of the imaging area by the CCD camera 61 is cut.
Here, the cutting position does not necessarily have to coincide with the center line of the imaging area of the CCD camera 61. Depending on the position and size of the projection to be imaged, consideration is given to the ease and accuracy of image matching in the next process. It is also possible to make the position shifted from the center line of the imaging region coincide with the cutting position. In this case, it is necessary to change the operation based on the center line of the imaging region in the following description to the operation based on the position shifted from the center line.

  An optical fiber illuminating device 63 for irradiating light from a metal haloid light source is provided on the upper surface of the gantry 31 so as to face the CCD camera 61. The optical fiber illuminating device 63 is arranged so that the irradiation area is upward, and the light from the metal haloid light source 36 is irradiated to the imaging area of the imaging means 60.

  In the belt sleeve material width cutting apparatus according to the present invention, the projection 10a of the belt sleeve material 10 wound around the rotary pulley 22 is imaged by the CCD camera 61, and the position of the cutter 33 is controlled. . FIG. 3 is a block diagram of the control system. The output of the CCD camera 61 is given to the image processing device 71, and the image picked up by the CCD camera 61 is subjected to image processing by the image processing device 71. An arithmetic control unit 72 using a personal computer is connected to the image processing device 71. As shown in FIG. 1, the arithmetic control unit 72 is disposed above the mandrel 26, and a monitor television on which an image processed by the image processing device 71 is displayed on the arithmetic control unit 72. 73 is provided.

  The calculation control unit 72 is connected to a positioning sequencer 74 that controls the servo motor 44 that slides the slide table 42. The calculation control unit 72 uses the cutter 33 based on the image processed by the image processing device 71. Is calculated, and the servo motor 44 is controlled based on the calculation result. Then, when the servo motor 44 is rotated forward or backward, the ball screw 43 is rotated forward or backward, and the cutting edge of the cutter 33 is positioned on the center line between the protrusion rows which is a predetermined position in the belt sleeve material 10. The

The belt sleeve material width cutting apparatus having such a configuration operates as follows. The belt sleeve material 10 is wound around the rotary pulley 22 and the tension pulley 24 so that the peripheral surface provided with the plurality of protrusions 10a is on the outer side, and is in a state where tension is applied. Further, the positions and orientations of the CCD camera 61 and the macro zoom lens 62 are finely adjusted so that the cutting edge of the cutter 33 is positioned on the center line in the imaging area of the CCD camera 61 of the imaging means 60. Furthermore, a standard value based on the dimensional specification of the width direction of the tractor belt to be manufactured is set as the slide distance of the cutter 33, that is, the slide distance of the slide table 42. The standard value based on the dimensional specification of the tractor belt in the width direction is set based on the pitch and number of protrusions provided on the belt sleeve material 10.
Here, it is also possible to manufacture a transmission belt in which a plurality of protrusion rows are arranged by setting the slide distance so as to cut every other row.

  In such a state, the central portion (hereinafter referred to as the center) between the adjacent protrusion rows located at the end portion 10b (the portion surrounded by the dotted line in FIG. 5) of the belt sleeve material 10 in the wound state. The slide table 42 is slid by manual operation to a position where a line) can be picked up by the CCD camera 61. Then, when the slide table 42 is slid to a position where the center line between the protrusion rows located at the end 10b of the belt sleeve material 10 can be imaged, the rotary pulley 22 is rotated by the rotational drive of the motor 23, In a state where the belt sleeve material 10 is moved around, the fine adjustment as an initial setting is performed so that the center line between the protrusion rows coincides with the center line of the imaging region. By this fine adjustment, the cutter 33 is adjusted to the scheduled cutting position where the cutting position of the cutter 33 is on the center line between the protrusion rows. When the CCD camera 61 is finely adjusted, the portion located at the end 10 b of the belt sleeve material 10 is imaged by the CCD camera 61, and the captured image is stored in the image processing device 71. At this time, the time during which the shutter for storing as one image is open (shutter speed) is set to such a time that at least one protrusion is imaged based on the circumferential speed of the belt sleeve material 10, and the circular movement is performed. An image of the belt sleeve material 10 at the time is taken. Thereby, even if it image | photographs at arbitrary timings, the image of the belt sleeve material 10 by which the shape of the one or more protrusion 10a was imaged is memorize | stored in the captured image processing apparatus 71. For example, an image of a region indicated by a broken line in FIG. In this stored image, the center line between the protrusion rows coincides with the image center line X. Therefore, the cutting position of the cutter 33 is located on the center line between the protrusion rows on the image center line X. Yes.

  In such a state, each air cylinder 51 which is a cutter pressing means is driven synchronously, and the cutting edge of the cutter 33 is between the protrusion rows located at the end portion 10b of the belt sleeve material 10 moving around. Pushed along the center line, the belt sleeve material 10 is cut over the entire circumference. Thereby, the side edge of the belt sleeve material 10 is cut in a state along the center line between the protrusion rows.

  In this way, when the belt sleeve material 10 is cut over the entire circumference, the servo motor 44 is driven so that the slide base 42 is slid by a preset distance. As a result, the cutter 33 is moved to the temporarily determined position before cutting that faces between the predetermined protrusion rows in the belt sleeve material 10. In such a state, the calculation control unit 72 instructs that the position correction control of the cutter 33 should be started. Thereby, the arithmetic control unit 72 starts position correction control of the cutter 33 and outputs a predetermined signal to the image processing device 71.

  First, the image processing apparatus 71 uses the CCD camera 61 to capture an image of the portion of the belt sleeve material 10 that is rotating around the blade 33 facing the cutting edge. At this time, the shutter speed is set to a time at which at least one protrusion 10a is imaged, similar to the shutter speed imaged at the planned cutting position, and an image of the belt sleeve material 10 during the circular movement is captured. . Thereby, even if it image | photographs at arbitrary timings, the shape of the one or more protrusion 10a is imaged by the captured image processing apparatus 71. FIG. Then, the image processing device 71 matches the captured image with an image stored in the image processing device 71. In this case, as shown in FIG. 4B, the area in the captured image indicated by the two-dot chain line is searched, and the protrusion shape in the image area and the protrusion shape in the storage image area indicated by the broken line To match. Then, a coordinate calculation is performed on the shift between the center line X in the stored image and the center line Y in the captured image, and the calculation result is output to the calculation control unit 72. In addition, the shift | offset | difference of each image center line X and Y at the time of matching the protrusion shape in the captured image between the predetermined protrusion row | line | columns of the belt sleeve material 10 which is moving around, and the protrusion shape in a memory | storage image. This corresponds to the deviation between the center line between the predetermined rows of protrusions in the belt sleeve material 10 moving around and the cutting edge of the cutter 33.

  In this case, an image is captured by the CCD camera 61 for a predetermined number of times with respect to the belt sleeve material 10 that is moving around, and each time an image is captured by the CCD camera 61, The image processing device 71 matches the captured image with the stored image, performs coordinate calculation processing on the difference between the center line Y of the captured image and the center line X of the stored image, and calculates the calculation results to the calculation control unit 72. To output.

The arithmetic control unit 72 sequentially reads the coordinate data regarding the deviation between the center line Y of the captured image output from the image processing device 71 and the center line X of the stored image, and statistically processes the read coordinate data. Thus, the optimum value of the deviation between the center lines X and Y of both images, that is, the deviation between the center line between the protrusion rows and the blade edge of the cutter 33 is calculated.
Here, by setting a longer shutter speed, it is possible to increase the number of protrusions that pass through the imaging region during imaging, and to optimize the calculation of deviation with a small number of imaging. At this time, considering the loss of the cutting time of the belt sleeve material 10 due to the increase in the shutter speed, the shutter speed is equal to or less than the time taken for the belt sleeve material 10 to make one turn so that the same protrusion is not imaged twice. It is desirable to make it.

  The arithmetic control unit 72 converts the calculated optimum value of the deviation into data relating to the distance based on the visual field of the CCD camera 61 and the movement direction and the movement distance of the cutter 33 necessary for eliminating the deviation. And a predetermined signal corresponding to the calculation result is output to the sequencer 74. The sequencer 74 drives the servo motor 44 to rotate forward or backward based on a predetermined signal output from the arithmetic control unit 72, and slides the slide table 42 in a predetermined direction by a predetermined distance. As a result, the cutting edge of the cutter 33 attached to the slide table 42 is not positioned by the operator, and the protrusions located between the ends 10b of the belt sleeve material 10 wound around the rotary pulley 22 Located on the centerline.

  In such a state, the pair of air cylinders 51 attached to the slide table 42 are driven synchronously, and the cutting edge of the cutter 33 is on the center line between the protrusion rows of the belt sleeve material 10 that is moving around. The belt sleeve material 10 is cut over the entire circumference along the center line between the protrusion rows. Thereby, the belt sleeve material 10 wound around the rotary pulley 22 and the tension pulley 24 is cut into a state with a predetermined width along the center line between the protrusion rows, and a tractor belt having a predetermined width dimension is obtained. Is done.

  In this way, when the belt sleeve material 10 is cut along the center line between the protrusion rows over the entire circumference, the belt sleeve material 10 is preset based on a standard value based on the width direction dimension specification of the tractor belt to be manufactured. The servo motor 44 is driven so that the slide table 42 is slid by the distance.

  Thereafter, by repeating the same operation, the belt sleeve material 10 is sequentially cut by a predetermined width to obtain a tractor belt having a predetermined width dimension. Accordingly, since the operator only needs to perform the work of storing the image pattern at the initial stage, the work of cutting the belt sleeve material can be saved.

  The belt sleeve width cutting device according to the present invention can be implemented with various modifications as long as it is described in the claims. For example, it is not limited to cutting along the center line between the protrusion rows as in the above-described embodiment, it is possible to set a cutting position at an arbitrary position from the protruding end and cut, in this case Then, the stored image is captured in a state where the cutting edge of the cutter is positioned at a target cutting position on the belt sleeve material.

  Moreover, it is not restricted to the case where the blade of a cutter is one sheet, It is also possible to cut | disconnect a belt sleeve material using the cutter which has a some blade. For example, it is also possible to use a cutter blade with an adjustable blade interval to cut while holding a belt between two blades adjusted to a predetermined interval.

  In the belt sleeve material width cutting device of the present invention, the belt body of the belt sleeve material is made of cast urethane elastomer, or natural rubber, butylene rubber, styrene-butadiene rubber, chloroprene rubber, ethylene-propylene rubber, hydrogenated nitrile. It can be applied to any case made of rubber or rubber elastomer such as alkylated chlorosulfonated polyethylene.

It is a front view which shows the width | variety cutting device of the belt sleeve material which concerns on one embodiment of this invention. It is a side view of the width | variety cutting device of the belt sleeve material shown in FIG. FIG. 2 is a block diagram of a control system of the belt sleeve material width cutting apparatus shown in FIG. 1. It is explanatory drawing for operation | movement description of the width | variety cutting device of the belt sleeve material shown in FIG. FIG. 3 is an end view of the belt sleeve material, as viewed in the direction Y1 in FIG. 2.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Belt sleeve material 10a Protrusion part 20 Belt sleeve material rotation moving means 22 Rotating pulley 23 Motor 25 Belt transmission mechanism 31 Mount 33 Cutter 40 Cutter slide means 41 Guide rail 42 Slide stand 43 Ball screw 44 Servo motor 51 Air cylinder, cutter pressing means 60 Imaging means 61 CCD camera 62 Macro zoom lens

Claims (2)

A belt sleeve material provided with a plurality of discontinuous protrusions arranged side by side in the circumferential direction along the entire circumference is circulated with each protrusion positioned on the outer peripheral side. Means for moving around the belt sleeve material, and
A cutter disposed facing the belt sleeve material that is orbitally moved by the belt sleeve material orbiting means;
Cutter pressing means for pressing the cutter against the belt sleeve material moving around and cutting the belt sleeve material over the entire circumference;
Cutter slide means for moving the cutter in the width direction;
Imaging means disposed integrally with the cutter so as to image the projecting portion of the belt sleeve material moving around and the cutting position by the cutter;
An image of the protrusion imaged by the imaging means during the circular movement of the belt sleeve material when the cutter is driven by the cutter slide means and moved to a temporarily determined position before cutting, and the cutter is scheduled to be cut Based on the pre-captured image of the protrusion when the belt sleeve material moves around when the belt sleeve material is in a position, the shift in the width direction of the two images is calculated, and if there is a shift, the shift is calculated. Control means for controlling the cutter slide means to correct and further moving the cutter;
With
The imaging means sets a time during which the shutter is open based on the rotation speed of the belt sleeve material so that at least one of the plurality of discontinuous protrusions is imaged. An image of the belt sleeve material is taken, and a belt sleeve material width cutting device. The width cutting of the belt sleeve material according to claim 1, wherein a time during which the shutter of the imaging unit is open is set to be equal to or less than a time taken for the belt sleeve material to make a round. apparatus.

Images