JP2015063374A - Rotation control device and rotation control method for roll body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily adjust the rotating speed of a raw fabric according to variation in diameter of the raw fabric without providing any new sensor etc., when the other end side of a long-sized sheet is supplied or wound by rotating the raw fabric having been rolled or rewound itself.SOLUTION: A rotation control device 10 includes: stress loading means 20 of loading the other end side of a long-sized body 80 with drawing-out stress or sending-out stress; two support members 31, 32 which support the drawn-out long-sized body 80 at a predetermined interval; a dancer roller 40 arranged on the long-sized body 80 between the support members 31, 32; detection means 50 of detecting the dancer roller 40 not being positioned at a predetermined height; and control means 60 of measuring the time for which the detection means performs the detection and determining a rotating speed at which the roll body 70 is rotated on the basis of the measured time.

Description

  The present invention relates to a roll body rotation control device and a rotation control method applied to an apparatus for supplying a long body from a roll body and an apparatus for winding the long body onto a roll body.

  When supplying a roll-like long sheet wound with film, paper, tape, etc. from the original fabric and winding it onto the original fabric, one end of the long sheet is pulled out by sandwiching the long sheet between two rollers. On the other hand, the roll raw roll or the take-up roll roll itself is rotated to supply or wind up the other end of the long sheet.

  However, when supplying or winding the other end side of the long sheet by rotating the roll original roll or the take-up roll original roll itself, the original roll diameter changes with the supply or winding of the long sheet. That is, when the original fabric is rotated at a constant rotational speed, the supply speed of the long sheet is decreased or the winding speed is increased with a change in the original fabric diameter.

  If the supply speed is slow, the supply may not be in time, and an extra tension may be applied to the original fabric, or in the worst case, the sheet may tear. On the other hand, when the supply speed is high, there is a possibility that a position shift occurs without a necessary tension being applied, and wrinkles or creases occur due to excessive feeding.

  Therefore, for example, in Patent Document 1, it is proposed that raw shaft rotational speed control is performed by a plurality of remaining amount detection sensors arranged in the radial direction of the raw fabric. Moreover, in patent document 2, the length of the tape actually wound up by winding for 1 cycle by intermittent feeding is measured, the tape roll original fabric diameter is calculated from the rotation amount of a tape supply shaft, and the tape in the next cycle is calculated. It has been proposed to determine the amount of rotation of the supply shaft. Further, in Patent Document 3, the outer shape of the take-up roll is measured by an ultrasonic sensor to control the take-up motor rotation speed, and a balance arm with an encoder is attached to the dancer roller. It has been proposed to perform fine adjustment so as to increase or decrease the rotational speed so as to control the balance arm to keep the level.

JP 2004-249536 A JP 2002-114420 A Japanese Patent Laid-Open No. 11-060004

  However, the technique of Patent Document 1 requires a remaining amount detection sensor and the mechanism is complicated, and when the feed speed of the long sheet differs for each type, the setting of the number of rotations according to the remaining amount is changed or It has to be adjusted and takes time and effort.

  Further, the technique of Patent Document 2 requires the addition of a mechanism such as attaching an encoder to the roller on the transport path in order to measure the length of the tape actually wound, and further the configuration in which the encoder is added to the roller. However, the feed amount cannot be measured accurately due to the change in the frictional resistance between the long sheet and the roller during continuous production and the rotational resistance of the roller, which may cause problems due to an inappropriate supply speed.

  Furthermore, the technique of Patent Document 3 performs the control of the number of rotations of the raw material by measuring the diameter of the raw material. In this respect, an additional mechanism is required in the same manner as Patent Document 1, and it takes time and effort for adjustment. End up.

  The present invention has been made in view of the above-described problems, and a new sensor or the like is newly provided in the case of supplying or winding the other end side of the long sheet by rotating the roll original roll or the take-up roll original roll itself. An object of the present invention is to provide a rotation control device and a rotation control method for a roll body that can easily adjust the rotation speed of the roll according to a change in the diameter of the roll.

  In order to achieve the above object, a roll body rotation control device according to the present invention is a roll body rotation control device in which the long body is wound in a state where one end of the long body is disposed inside the roll. A stress loading means for applying a drawing stress or a delivery stress to the other end of the long body, and a long body positioned between the roll body and the stress loading means at a predetermined interval. Two support members, a dancer roller disposed on an elongated body positioned between the two support members, and detection that is in a first state when the dancer roller is not positioned at a predetermined height And control means for measuring a time when the detection means is in the first state and determining a rotation speed when the roll body is rotated based on the measured time.

  In order to achieve the above object, the roll body rotation control method according to the present invention is a roll body rotation control method in which the long body is wound in a state where one end of the long body is disposed inside the roll. The other end side of the long body is loaded with a drawing stress or a delivery stress, and the long body positioned between the roll body and the stress loading means is supported at a predetermined interval and supported. A dancer roller is disposed on the long body, a time during which the dancer roller is not positioned at a predetermined height is measured, and a rotation speed for rotating the roll body is determined based on the measured time.

  According to the aspect of the present invention described above, when supplying or winding the other end side of the long sheet by rotating the roll original roll or the take-up roll original roll itself, the original is not added without adding a new sensor or the like. The original fabric rotation speed can be easily adjusted according to the change in the opposite diameter.

It is a lineblock diagram of rotation control device 10 concerning a 1st embodiment. It is a block diagram of the supply apparatus 100 which concerns on 2nd Embodiment. It is the figure which showed the relationship between the time change of ON-OFF of the dancer sensor 140 which concerns on 2nd Embodiment, and rotation speed. It is a block diagram of the winding apparatus 400B which concerns on 3rd Embodiment. It is the figure which showed the relationship between the time change of ON-OFF of the dancer sensor 440B which concerns on 3rd Embodiment, and rotation speed.

(First embodiment)
A first embodiment of the present invention will be described. The block diagram of the rotation control apparatus of the roll body which concerns on this embodiment is shown in FIG. The rotation control device 10 rotates the roll body 70 around which the long body 80 is wound at a predetermined rotation speed in a state where one end of the long body 80 is disposed inside the roll.

  In FIG. 1, the rotation control device 10 includes a stress load means 20, two support members 31 and 32, a dancer roller 40, a detection means 50, and a control means 60.

  The stress loading means 20 applies a drawing stress or a feeding stress to the other end side of the long body 80 drawn from the roll body 70. When the stress loading means 20 applies a drawing stress or a feeding stress to the long body 80, the long body 80 moves at a constant drawing speed or feeding speed.

  The two support members 31 and 32 are arranged at a predetermined interval, and support the long body 80 drawn from the roll body 70. The dancer roller 40 is disposed on the long body 80 supported by the support members 31 and 32. Accordingly, the long body 80 hangs down in a U shape with the support members 31 and 32 as fulcrums due to the weight of the dancer roller 40. The dancer roller 40 moves up and down according to the path length of the long body 80 between the support members 31 and 32, so that the difference between the supply speed from the roll body 70 and the drawing speed from the long body 80, or The difference between the winding speed on the roll body 70 and the feeding speed of the long body 80 is absorbed.

  The detecting means 50 is in the first state when the dancer roller 40 is not positioned at a predetermined height. Moreover, the detection means 50 which concerns on this embodiment will be in a 2nd state, when the dancer roller 40 is located in predetermined | prescribed height.

  The control means 60 measures the time when the detection means 50 is in the first state, and determines the rotational speed of the roll body 70 based on the measured time. In this case, the rotation speed of the roll body 70 can be appropriately updated according to the change in the diameter of the roll body 70.

  For example, when the stress loading means 20 applies a drawing stress to the other end of the long body 80, the diameter of the roll body 70 decreases as the long body 80 is supplied from the roll body 70. The control means 60 increases the rotational speed of the roll body 70 according to the time when the dancer roller 40 is not located at a predetermined height. Thereby, the supply speed of the long body 80 is increased, and is equal to the drawing speed of the long body 80 by the stress load means 20.

  On the other hand, when the stress loading means 20 sends the stress to the other end of the long body 80 and applies a stress, the diameter of the roll body 70 increases as the long body 80 is wound around the roll body 70. However, the control means 60 reduces the rotational speed of the roll body 70 according to the time when the dancer roller 40 is not located at a predetermined height. As a result, the winding speed of the long body 80 is reduced and is equal to the feeding speed of the long body 80 by the stress load means 20.

  The control means 60 according to the present embodiment further rotates the roll body 70 at the determined rotational speed in a direction in which the dancer roller 40 returns to a predetermined height when the detection means 50 is in the first state. As the roll body 70 rotates, the dancer roller 40 returns to a predetermined height. Specifically, when the stress loading means 20 applies a pulling stress to the other end side of the long body 80, the control means 60 rotates the roll body 70 at the determined rotational speed, thereby causing the long body 80 to move. Supply to the stress loading means 20 side. On the other hand, when the stress loading means 20 is sent to the other end side of the long body 80 to load the stress, the control means 60 rotates the roll body 70 at the determined rotational speed, thereby causing the long body 80 to rotate. Take up to 70. When the dancer roller 40 returns to a predetermined height, the detection means 50 returns from the first state to the second state, and the control means 60 stops the rotation of the roll body 70.

  As described above, the rotation control device 10 according to the present embodiment determines the rotation speed when the roll body 70 is rotated based on the time when the dancer roller 40 is not positioned at a predetermined height. In this case, according to the change in the diameter of the roll body 70, the rotation speed of the roll body 70 can be updated so as to coincide with the drawing speed or delivery speed of the long body 80 by the stress load means 20.

  Here, in the supply and winding of the long body 80, the dancer roller 40 is generally applied, and the detection means 50 is disposed for detecting the position of the dancer roller 40. When the rotation speed is determined based on the time during which the detection unit 50 is in the first state, it is not necessary to arrange a new sensor or the like for determining the rotation speed, and the inexpensive rotation control device 10 can be provided. . Furthermore, when the rotation speed is determined according to the time during which the detection unit 50 is in the first state, the control of the control unit 60 can be simplified.

  Therefore, the rotation control device 10 according to the present embodiment rotates the roll body 70 to supply or wind up the other end side of the long body 80 without adding a new sensor or the like. The rotational speed of the roll body 70 can be easily adjusted according to the change in diameter.

  Here, it is not always necessary to adjust the rotation speed of the roll body 70 frequently when the pulling interval or the feeding interval of the long body 80 by the stress load means 20 is long or when the movable range of the dancer roller 40 is large. . The control unit 60 may compare the time during which the detection unit 50 is in the first state with a predetermined threshold and adjust the rotation speed of the roll body 70 based on the comparison result.

  For example, when the stress loading means 20 applies a drawing stress to the other end of the long body 80, the control means 60 sets a predetermined value to the rotation speed at that time when the measurement time is equal to or greater than a predetermined threshold. While adding and updating to a new rotation speed, when the measurement time is shorter than a predetermined threshold, the rotation speed at that time is maintained as it is. On the other hand, when the stress loading means 20 sends a stress to the other end of the long body 80 and the stress is applied, the control means 60 determines a predetermined value from the rotational speed at that time when the measurement time is equal to or less than a predetermined threshold. On the other hand, when the measurement time is longer than a predetermined threshold, the rotation speed at that time is maintained as it is.

(Second Embodiment)
A second embodiment will be described. FIG. 2 shows a configuration diagram of a long sheet supply apparatus according to the present embodiment. The supply apparatus 100 pulls out the long sheet 300 from the long sheet original fabric 200 and supplies it to the pulling mechanism 150. Here, the long sheet original fabric 200 is a roll body in which a long sheet 300 such as a film, paper, or tape is wound around a roll core.

  In FIG. 2, the supply device 100 includes an original fabric rotation motor 110, two supports 121 and 122, a dancer roller 130, a dancer sensor 140, a drawer mechanism 150, and a control unit 160 (not shown in FIG. 2).

  The original sheet rotation motor 110 supplies the long sheet 300 from the long sheet original sheet 200 by rotating the long sheet original sheet 200.

  The two supports 121 and 122 support the long sheet 300 supplied from the long sheet original fabric 200 at a predetermined interval.

  The dancer roller 130 is disposed on the long sheet 300 positioned between the supports 121 and 122. At this time, due to the weight of the dancer roller 130, the long sheet 300 hangs down in a U shape with the support members 121 and 122 as fulcrums. The dancer roller 130 moves up and down according to the path length between the supports 121 and 122 of the long sheet 300. The dancer roller 130 moves up and down according to the difference between the supply speed and the drawing speed of the long sheet 300, so that the difference between the supply speed and the drawing speed of the long sheet 300 is absorbed.

  The dancer sensor 140 detects whether or not the dancer roller 130 is located at a predetermined lower limit position. The dancer sensor 140 according to the present embodiment is turned on when the dancer roller 130 is located at a predetermined lower limit position, and is turned off when the dancer roller 130 is displaced upward from the predetermined lower limit position. The dancer roller 130 may be in an OFF state when it is positioned at a predetermined lower limit position, and may be in an ON state when it is not positioned. The dancer sensor 140 may be an inexpensive sensor that is generally used. For example, a photo sensor or the like can be applied. When a photo sensor is applied as the dancer sensor 140, a shielding plate is attached to the axial center of the dancer roller 130 and the light shielding state is detected by the photo sensor.

  The pulling mechanism 150 applies pulling tension to the long sheet 300 supplied from the long sheet original fabric 200, and sends it to a processing apparatus (not shown) side for processing such as shaping and cutting.

  The controller 160 (not shown) drives the original fabric rotation motor 110 when the dancer sensor 140 is turned off, and stops driving the original fabric rotation motor 110 when the dancer sensor 140 is turned on. . Furthermore, the control unit 160 measures the time (OFF time) until the dancer sensor 140 changes from the OFF state to the ON state, and controls the number of revolutions of the raw fabric rotation motor 110 according to the OFF time.

  The operation procedure of the supply device 100 configured as described above will be described with reference to FIGS. FIG. 3 is a diagram showing the relationship between the ON-OFF time change of the dancer sensor 140 and the rotational speed.

  In FIG. 2, in order to perform processing such as shaping and cutting of the long sheet 300, the pulling mechanism 150 applies a pulling tension to the long sheet 300 and pulls out the long sheet 300 by a necessary length, whereby the long sheet 300 is pulled out. The path length of 300 is shortened, and the dancer roller 130 is raised (dotted line position in FIG. 2). The dancer sensor 140 is turned off when the dancer roller 130 is raised.

  When the dancer sensor 140 is in the OFF state, the control unit 160 starts measuring the time in the OFF state, and supplies the long sheet 300 from the long sheet original fabric 200 (counterclockwise in FIG. 2). ) Is driven at a predetermined rotational speed.

  When the original rotation motor 110 rotates, the long sheet 300 is supplied from the long sheet original 200, and the path length of the long sheet 300 returns to the original length. Thereby, the dancer roller 130 returns to the original height, and the dancer sensor 140 returns from the OFF state to the ON state. When the dancer sensor 140 returns to the ON state, the control unit 160 stops driving the raw fabric rotation motor 110.

  Here, the diameter of the long sheet original fabric 200 decreases as the long sheet 300 is supplied. When the pull-out amount by the pull-out mechanism 150 is constant, the supply from the long sheet original fabric 200 cannot catch up with the pull-out from the pull-out mechanism 150 only by driving the original roll motor 110 at a constant rotational speed. In this case, when the dancer roller 130 continues to rise and the dancer roller 130 reaches top dead center, there is a problem that the long sheet 300 is cut by the pulling tension by the pulling mechanism 150.

  Therefore, the control unit 160 adjusts the rotation speed of the original fabric rotation motor 110 according to the OFF time of the dancer sensor 140. As shown in FIG. 3, when the OFF time exceeds a predetermined threshold value (for example, 2 seconds), the control unit 160 according to the present embodiment rotates in advance to the number of rotations driving the original fabric rotation motor 110. A number (for example, 1 rpm) is added, and the result of addition is set as a new drive rotation speed. Thereby, the rotation speed of the long sheet original fabric 200 is increased, and the supply speed of the long sheet 300 is increased. In addition, when the long sheet original fabric 200 is replaced with a new one, the control unit 160 resets the “current rotational speed” in Expression (1) to the initial rotational speed.

  Here, when it is necessary to frequently adjust the rotation speed, the rotation speed calculated based on the equation (1) can be applied instead of adding the preset rotation speed.

New rotation speed = current rotation speed + OFF time (≧ threshold value) × proportional multiplier Equation (1)
In Expression (1), the threshold of OFF time and the proportional multiplier are appropriately set according to the intermittent feeding interval and intermittent feeding amount of the long sheet 300. When the current rotation speed is 1 rpm, by setting the threshold value to 2 seconds and the proportional multiplier to 0.5, the new rotation speed when the OFF time is 2 seconds is 2 rpm (= 1 rpm + 2 seconds × 0.5) This is the same as the control described above (FIG. 3). On the other hand, when the difference between the supply speed and the drawing speed of the long sheet 300 is large, for example, when the OFF time is 4 seconds, the new rotation speed is 3 rpm (= 1 rpm + 4 seconds × 0.5), and the original fabric rotation motor The rotational speed of 110 changes greatly.

  An appropriate rotational speed can be obtained by setting the threshold value short when the intermittent feed interval is short, and setting the threshold value long when the intermittent feed interval is long. Further, when the intermittent feed amount is small, the proportional multiplier is set to be small, and when the intermittent feed amount is large, the proportional multiplier is set to be large so that an appropriate rotational speed can be obtained.

  As described above, the supply device 100 according to the present embodiment controls the raw fabric rotation motor 110 based on the detection result of the dancer sensor 140 so that the dancer roller 130 is maintained at the lower limit position. The number of rotations of the original fabric rotation motor 110 is controlled according to the time during which the dancer sensor 140 is in the OFF state. Thereby, the number of rotations of the original fabric rotating motor 110 can be increased by following the decrease in the diameter of the long sheet original fabric 200. Further, when a dancer sensor that is generally arranged in a long-body supply device is applied to the adjustment of the rotation speed, it is not necessary to newly install a sensor for adjusting the rotation speed, and it is possible to suppress an increase in cost. .

  Furthermore, when controlling the rotation speed of the original fabric rotation motor 110 according to the OFF time of the dancer sensor 140, the rotation speed of the original fabric rotation motor 110 can be made constant over a certain period. Therefore, compared with the case where the measurement result of the supply amount of the long sheet 300 and the movement amount of the dancer roller 130 is used, it is possible to avoid the complexity of the drive mechanism of the original fabric rotation motor 110 and to simplify the rotation speed. This mechanism can be easily controlled. In addition, when it is desired to increase the supply speed of the long sheet 300 smoothly, it can be dealt with by shortening the preset threshold and decreasing the proportional multiplier.

  Here, in the above-described embodiment, the control unit 160 promptly changes the rotation speed of the web rotation motor 110 when the OFF time of the dancer sensor 140 exceeds a predetermined threshold value, but is not limited thereto. When the drawing interval of the long sheet 300 by the pulling mechanism 150 is long or the movable range of the dancer roller 130 is large, the control unit 160 controls the rotation speed of the original web rotation motor 110 while the long sheet 300 is being supplied. There is no need to adjust. In this case, the controller 160 may change the number of rotations of the original fabric rotation motor 110 when the long sheet 300 is pulled out by the pulling mechanism 150 next time.

  In the above-described embodiment, the control unit 160 uses the OFF time of the dancer sensor 140 for controlling the rotation speed of the original fabric rotation motor 110. However, the present invention is not limited to this. The controller 160 can also measure the rotation time of the original fabric rotation motor 110 and control the rotation speed of the original fabric rotation motor 110 according to the rotation time.

(Third embodiment)
A third embodiment will be described. FIG. 4 shows a configuration diagram of a long sheet winding device 400B according to the present embodiment. The winding device 400B is a device for winding the long sheet 300B fed from the feeding mechanism 410B onto the long sheet original fabric 200B. Here, the long original sheet 200B is a roll formed by winding a long sheet 300B such as a film, paper, or tape around a roll core.

  In FIG. 4, the winding device 400B includes a feed mechanism 410B, two supports 421B and 422B, a dancer roller 430B, a dancer sensor 440B, an original fabric rotating motor 450B, and a control unit 460B (not shown in FIG. 4).

  The delivery mechanism 410B sends a stress to the long sheet 300B that has been subjected to processing and shaping such as shaping and die cutting, and sends it to the long sheet original fabric 200B side.

  The support bodies 421B and 422B and the dancer roller 430B are configured similarly to the support bodies 121 and 122 and the dancer roller 130 described in the second embodiment. That is, the dancer roller 430B moves up and down according to the difference between the feeding speed and the winding speed of the long sheet 300B, so that the difference between the feeding speed and the winding speed of the long sheet 300B is absorbed.

  Dancer sensor 440B detects whether dancer roller 430B is at a predetermined upper limit position. The dancer sensor 440B is turned on when the dancer roller 430B is located at the upper limit position, and is turned off when the dancer roller 430B is located below the predetermined upper limit position.

  The original sheet rotating motor 450B rotates the long sheet original sheet 200B to wind the long sheet 300B around the long sheet original sheet 200B.

  When the dancer sensor 440B is turned off, the controller 460B (not shown) drives the original web rotation motor 450B at a predetermined rotational speed in a direction in which the long sheet 300B is wound around the long sheet original fabric 200B. When the dancer sensor 440B is turned on, the driving of the original fabric rotation motor 450B is stopped. Furthermore, the control unit 460B measures the time (OFF time) until the dancer sensor 440B changes from the OFF state to the ON state, and controls the number of rotations of the original fabric rotation motor 450B according to the OFF time.

  The operation procedure of the winding device 400B configured as described above will be described with reference to FIGS. FIG. 5 is a diagram showing the relationship between the ON-OFF time change of the dancer sensor 440B and the rotation speed. Here, the winding operation by the winding device 400B is the same as the supply operation of the supply device 100 described in the second embodiment. That is, when the delivery mechanism 410B sends out the long sheet 300B, the dancer roller 430B is lowered and the dancer sensor 440B is turned off. As a result, the control unit 460B (not shown) rotates the web rotation motor 450B counterclockwise to wind the long sheet 300B around the long sheet web 200B. As the dancer roller 430B rises and the dancer sensor 440B is turned on again, the rotation of the web rotation motor 450B stops.

  Here, in the present embodiment, as the long sheet 300B is wound around the long sheet original fabric 200B, the diameter of the long sheet original fabric 200B increases. When the delivery amount by the delivery mechanism 410B is constant, the long sheet original fabric 200B is wound around the long sheet original fabric 200B at a stretch by driving the original fabric rotation motor 450B at a constant rotational speed. In this case, there is a possibility that problems such as cutting of the long sheet original fabric 200B occur. Therefore, the control unit 460B adjusts the rotation speed of the raw fabric rotation motor 450B according to the OFF time of the dancer sensor 440B.

  For example, as shown in FIG. 5, when the web rotation motor 450B is rotating at an initial rotation speed of 30 rpm, the dancer sensor 440B is turned on earlier than a preset time (for example, 2 seconds). The unit 460B stops driving the original fabric rotating motor 450B and subtracts the rotational speed of the original fabric rotating motor 450B from the current rotational speed by a preset rotational speed (for example, 1 rpm) to obtain a new rotational speed. Thereby, the number of rotations of the long sheet original fabric 200B from the next time is reduced, and the winding speed of the long sheet 300B is reduced.

  If it is necessary to frequently adjust the rotation speed, the rotation speed calculated based on the equation (2) can be applied instead of subtracting the preset rotation speed.

New rotation number = current rotation number−proportional multiplier × (threshold−OFF time (≦ threshold)) (2)
When the current rotation speed is 30 rpm, the next drive is performed at a new rotation speed of 29 rpm (= 30 rpm−10 ×) when the OFF time is 1.9 seconds by setting the threshold value to 2 seconds and the proportional multiplier to 10. (2 seconds to 1.9 seconds), which is the same as the above-described control (FIG. 5) On the other hand, when the OFF time is larger than the threshold value, the current rotation speed is maintained, and the feeding speed of the long sheet 300B is set. For example, when the OFF time is 1 second, the new rotation speed is 20 rpm (= 30 rpm−10 × (2 seconds−1 second), and the rotation speed of the original rotation motor 450B is It changes a lot.

  As described above, the winding device 400B according to the present embodiment increases the diameter of the long sheet original fabric 200B by controlling the rotational speed of the original fabric rotation motor 450B according to the OFF time of the dancer sensor 440B. Thus, the rotational speed of the original fabric rotating motor 450B can be reduced. When the OFF time of the existing dancer sensor 440B is applied to the rotation speed adjustment, it is not necessary to install a new sensor and the cost can be suppressed, and the rotation speed of the original rotation motor 450B is frequently changed. Therefore, the number of rotations can be easily controlled with a simple mechanism. In order to smoothly reduce the winding speed of the long sheet 300B, it is only necessary to increase the preset threshold value and decrease the proportional multiplier.

  The present invention is not limited to the above-described embodiment, and design changes and the like within a range not departing from the gist of the present invention are included in the present invention.

DESCRIPTION OF SYMBOLS 10 Rotation control apparatus 20 Stress load means 31, 32 Support member 40 Dancer roller 50 Detection means 60 Control means 70 Roll body 80 Long body 100 Supply apparatus 110 Original fabric rotation motor 121,122 Support body 130 Dancer roller 140 Dancer sensor 150 Drawer Mechanism 160 Control unit 200, 200B Long sheet original fabric 300, 300B Long sheet 400B Winding device 410B Feeding mechanism 421B, 422B Support body 430B Dancer roller 440B Dancer sensor 450B Original fabric rotation motor 460B Control unit

Claims (10)

A roll body rotation control device in which the long body is wound in a state where one end of the long body is disposed inside the roll,
Stress loading means for applying a drawing stress or a delivery stress to the other end of the elongated body;
Two support members for supporting a long body positioned between the roll body and the stress load means at a predetermined interval;
A dancer roller disposed on an elongated body positioned between the two support members;
Detection means that enters a first state when the dancer roller is not at a predetermined height;
Control means for measuring the time when the detection means is in the first state, and determining a rotation speed when rotating the roll body based on the measured time;
A roll body rotation control device comprising: The detection means is in the second state when the dancer roller is located at a predetermined height,
The control means rotates the dancer roller in a direction in which the dancer roller returns to a predetermined height at a rotation speed determined when the detection means is in the first state, and the detection means is changed from the first state to the second state. When returning to the state of, stop the rotation of the roll body,
The roll body rotation control device according to claim 1. When the stress load means applies a drawing stress to the other end of the elongated body,
The control means adds a predetermined value to the rotation speed when the measurement time is equal to or greater than a predetermined threshold value to obtain a new rotation speed, and sets the rotation speed when the measurement time is shorter than the predetermined threshold value. Keep it as it is,
The rotation control apparatus of the roll body of Claim 1 or 2. When the measurement time is equal to or greater than a predetermined threshold, the control means adds a value proportional to the measurement time to the rotation speed to obtain a new rotation speed.
The rotation control apparatus of the roll body of Claim 3. When the stress load means sends stress to the other end of the elongated body,
The control means subtracts a predetermined value from the rotation speed when the measurement time is less than or equal to a predetermined threshold value to obtain a new rotation speed, and if the measurement time is longer than the predetermined threshold value, Keep it as it is,
The rotation control apparatus of the roll body of Claim 1 or 2. When the measurement time is equal to or less than a predetermined threshold, the control means subtracts a value proportional to the measurement time from the rotation speed to obtain a new rotation speed.
The rotation control apparatus of the roll body of Claim 5. A roll body rotation control method in which the long body is wound in a state where one end of the long body is disposed inside the roll,
Applying a withdrawal stress or a delivery stress to the other end of the long body,
A long body positioned between the roll body and the stress load means is supported at a predetermined interval, and a dancer roller is disposed on the supported long body,
Measure the time when the dancer roller is not located at a predetermined height, and determine the rotation speed when rotating the roll body based on the measured time,
Roll body rotation control method. When the dancer roller deviates from a predetermined height position, the roll body is rotated in a direction in which the dancer roller returns to a predetermined height at the determined rotational speed,
When the dancer roller returns to a predetermined height, the rotation of the roll body is stopped.
The rotation control method of the roll body of Claim 7. When applying a drawing stress to the other end of the long body,
When the measurement time is equal to or greater than a predetermined threshold, a predetermined value is added to the rotation speed to obtain a new rotation speed,
When the measurement time is shorter than a predetermined threshold, the rotation speed is maintained as it is.
The roll control method for a roll body according to claim 7 or 8. When sending stress to the other end of the elongated body,
When the measurement time is less than or equal to a predetermined threshold, a predetermined value is subtracted from the rotation speed to obtain a new rotation speed,
When the measurement time is longer than a predetermined threshold, the rotational speed is maintained as it is.
The roll control method for a roll body according to claim 7 or 8.

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