JP2002087661A - Continuous unwinding device and continuous unwinding method for web - Google Patents

Abstract

PROBLEM TO BE SOLVED: To always stably unwind a web without decreasing the percentage of success of reel exchange even in handling of an unwinding web roll whose weight is increased by widening the web width or winding diameter in a continuous unwinding device and a continuous unwinding method for the web. SOLUTION: While the web 8 is unwound from a web roll 7, the web roll 7 is carried from the specified unwinding starting position m to the specified unwinding finishing position n along a pair of parallel guide rails, and while at least the web 8 is unwound from the web roll 7, a rotating driving device is connected to the web roll 8, tension of the web 8 unwound from the web roll 7 is controlled with the same rotating driving device from the unwinding start to the unwinding finish.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a continuous unwinding apparatus provided in an off-line coating machine (or a winder, a polisher, or the like) of a papermaking machine, for continuously unwinding a web from a web roll, and a continuous web. Regarding the unwinding method.

[0002]

2. Description of the Related Art In a papermaking machine, there is known an apparatus which is provided on a line (offline) independent of a papermaking machine and applies a coating (coating) to the surface of a web (base paper) produced by the papermaking machine. This device is called an off-line coating machine, and a roll-shaped web made by a paper machine is spliced by an unwinder (this is called a frame change or a splice in an off-line coating machine in a technical term). )
While doing continuous coating.

FIGS. 9 and 10 show the configuration of a typical conventional unwinding device provided in an off-line coating machine. First, the unwinding device shown in FIG. 9 is a bottom-feed type unwinding device, and FIG. 9 shows a state immediately before splicing. The bottom feed type unwinding device is of a type in which a web (base paper) 8 is unwound from the lower side of an unwinding web roll (web roll) 7 wound around a reel spool 4, and the unwound web 8 is unwound. After rising from the outlet, it is sent to the coating section via the lead-off roll 106.

A series of operations of a conventional bottom feed type unwinding device will be described. First, a new unwinding web roll 7 is fixed to a fixed position (unwinding start position) m on a horizontal rail 108 by a clamp device 116. Later, the unwinding of the web 8 starts. The unwinding tension of the unwinding web roll 7 is controlled by a first motor (not shown) connected to one end (back side end) of the reel spool 4 as an unwinding core via a detachable first clutch (not shown). Is controlled by the braking force.

The unwinding of the web 8 advances and the unwinding web roll 7
Is closer to the intermediate web roll diameter at the intermediate point indicated by the two-dot chain line, the operation of the hydraulic cylinder 120 causes the transfer arm 101 to approach the reel spool 4 on the horizontal rail 108 with the arm fulcrum 111 as the axis. The reel spool 4 is transferred from the device 116 to the clamp device 117 provided on the transfer arm 101. Subsequently, the transfer arm 101 rotates in the reverse direction, and the unwinding web roll 7 continues to unwind the web 8.
Is moved from the unwinding start position m to the unwinding end position n.
At this time, in order to keep maintaining the same web tension, a second clutch (not shown) detachably attached to the other end (front end) of the reel spool 4 when transferring to the clamping device 117.
A second motor (not shown) is connected via the first motor, and the braking source is switched from the first motor to the second motor to continue the tension control. The second motor is dedicated to controlling the tension of the web roll, and is disposed on the transfer arm 101. At the empty unwinding start position m, a new unwinding web roll 7 prepared at the standby position k on the loading carriage 114 is loaded along the loading rail 115, and the horizontal rail 108
Above is fixed by the clamp device 116.

The unwinding web roll 7 at the unwinding end position n
Is closer to a predetermined remaining paper diameter, the jack 112 operates based on a diameter signal from a sensor (not shown), and the splice device 100 rotates about the arm fulcrum 109 as an axis and the web 8
While continuing the above guide, the surface of the new unwinding web roll 7 at the unwinding start position m is approached. Splice device 1
Reference numeral 00 includes a lead-in roll 105, a saw blade type paper cutting device 113, a splice roll 104, and a lead-off roll 106 inside the splice arm 103. In the splice arm 103, the distance between the surface of the splice roll 104 and the surface of the unwinding web roll 7 is a set value (usually about 1).
0 mm), the operation is stopped by the operation of a sensor (not shown).

[0007] As shown in FIG.
A double-sided adhesive tape 10 and a tab stopper 9 for stopping the lead end 7a are applied in advance to the unwinding lead end 7a on the surface. In response to an acceleration start signal from a sensor (not shown), the unwinding web roll 7 is accelerated by the above-described first motor (drive motor) until the roll surface speed becomes equal to the web 8 speed.

[0008] Splicing is performed in the following manner. That is, when the remaining paper length of the unwinding web roll 7 at the unwinding end position n becomes small and finally reaches the set length, the position of the double-sided adhesive tape 10 on the surface of the new unwinding web roll 3 is determined by a sensor (not shown) or by calculation. The splice roll 104 is momentarily pressed against the surface of the unwinding web roll 7 at the unwinding start position m. Thereby, the web 8 is stuck to the double-sided adhesive tape 10 on the surface of the unwinding web roll 7, and is instantly put off, and the saw blade type paper cutting device 113 of full width is used.
Activate At this time, the tail length (double-sided adhesive tape 10
The timing of each operation is set so that the uncut length from the portion to the cut end cut by the saw blade type paper cutting device 113 is about 1 m.

Thereafter, the tension control is immediately switched from the second motor on the unwinding web roll 7 at the unwinding end position n to the first motor on the unwinding web roll 7 at the unwinding start position m, Switching of the unwinding web roll 7 while the machining is continued, that is, the frame change is completed. The empty reel spool 4 from which the web 8 has been unwound and almost empty is released from the transfer arm 101 onto the empty spool take-out stand 121 by opening the clamp device 117.

On the other hand, the unwinding device shown in FIG. 10 is a top feed type unwinding device, and FIG. 10 shows a state immediately before splicing. The top feed type unwinding device is of a type in which a web 8 is unwound from an upper side of an unwinding web roll 7 wound around a reel spool 4, and the unwound web 8 is unrolled downward from an unwinding portion. The paper is sent to the coating section via the lead-off roll 136.

A series of operations of a conventional top feed type unwinder will be described.
38 at a fixed position (unwinding start position) m on
It is unwound from an unwinding web roll 7 fixed by 6. The unwinding tension of the unwinding web roll 7 is controlled by a first motor (not shown) connected to one end (back side end) of the reel spool 4 as an unwinding core via a detachable first clutch (not shown). Is controlled by the braking force.

The unwinding web roll 7 advances the unwinding of the web 8
Is closer to the intermediate web roll diameter at the intermediate point indicated by the two-dot chain line, the operation of the hydraulic cylinder 150 causes the transfer arm 131 to approach the reel spool 4 on the horizontal rail 138 with the arm fulcrum 141 as the axis. The reel spool 4 is transferred from the device 146 to the clamp device 147 provided on the transfer arm 131. Subsequently, the transfer arm 131 rotates in the reverse direction, and the unwinding web roll 7 continues to unwind the web 8.
To the unwinding end position n. At this time, in order to maintain the same web tension, a second motor (not shown) is connected to the other end (front side end) of the reel spool 4 via a detachable second clutch (not shown) at the time of transfer to the clamp device 147. ) Is connected, and the braking source is switched from the first motor to the second motor to continue the tension control. The second motor is used exclusively for controlling the tension of the web roll, and is disposed on the transfer arm 131. At the empty winding start position m, a new unwinding web roll 7 is carried in from the upstream, and is fixed on the horizontal rail 138 by the clamp device 146.

The unwinding web roll 7 at the unwinding end position n
Is closer to a predetermined remaining paper diameter, the jack 132 is operated based on a diameter signal from a sensor (not shown), and the splice device 130 is rotated about the arm fulcrum 139 to rotate the web 8.
, While approaching the surface of the unwinding web roll 7 at the unwinding start position m. The splice device 130 has a lead-in roll 13 inside the splice arm 133.
5, saw blade type paper cutting device 143, splice roll 134
And a lead-off roll 136. The splice arm 133 is stopped by the operation of a sensor (not shown) when the distance between the surface of the splice roll 134 and the unwinding web roll 7 approaches a position of a set value (normally about 10 mm).

Splicing is performed in the following manner. That is, when the remaining paper length of the unwinding web roll 7 at the unwinding end position n is short and reaches the set length at the end, a new unrolling web roll 7 at the unwinding start position m at the unwinding start position m by a sensor (not shown) is calculated. The position of the double-sided adhesive tape 10 is captured, and the splice roll 134 is unwound from the web roll 7.
Momentarily pressed against the surface. Thereby, the web 8 is stuck to the double-sided adhesive tape 10 on the surface of the unwinding web roll 7, and is instantly put off, and the saw blade type paper cutting device 14 of full width is used.
Activate 3 At this time, the timing of each operation is set so that the tail length is about 1 m.

Thereafter, the tension control is immediately switched from the second motor on the unwinding web roll 7 at the unwinding end position n to the first motor on the unwinding web roll 7 at the unwinding start position m. , The switching of the unwinding web roll 7, that is, the frame change is completed. The web 8 is unwound,
The almost empty reel spool 4 is discharged onto the reject rail 110 by opening the clamp device 117 and operating the empty spool take-out arm 107.

[0016]

By the way, with the recent technical progress, the speed of a paper machine for coated base paper has been increasing, and even now, it has appeared that the speed is going to exceed 1500 m / min. At the same time, the size of the paper machine itself has been increasing, and some paper machines having a web width exceeding 10 m have appeared. With the speeding up of such a paper machine, the operating speed of the off-line coating machine has also been increased, and currently it is 1800 to 2000 m / min.
What can be driven by is desired.

However, when the speed exceeds 1500 m / min in the off-line coating machine, the splicing success rate (succession rate of frame replacement) in the conventional unwinding device is extremely reduced (in ordinary continuous operation, the splicing success rate is 99% or more). Success rate is required). The decrease in the splice success rate in the conventional unwinding device is due to the following reasons. That is, as described above, in recent years, the width of the web 8 has become close to 10 m, and the diameter of the unwinding web roll 7 has increased.
Even when it exceeds 5 m and is delivered to the transfer arm 101 (131), the size is close to 2 m. While rotating the large and heavy unwinding web roll 7 by the transfer arm 101 (131), 1500
When the frame is changed at a high speed of m / min or more, vibration occurs in the transfer arm 101 (131), and the tension of the web 8 before and after the important splice roll 104 (134) at the time of changing the frame is not stabilized. 8 causes fluttering.

The conventional unwinding device is a splice roll 104.
Although a stabilizer (not shown) is provided along the web 8 before and after (134), this countermeasure has limitations in terms of space and performance. For this reason, in the conventional unwinding device, the flapping of the web 8 causes poor cutting of the paper cutting knife and poor adhesion of the double-sided adhesive tape 10 in the saw blade type paper cutting device 113 (143). It mimicked the paper and reduced the splice success rate. Also, the transfer arm 101
The switching operation of the drive clutch when the unwinding web roll 7 is transferred to (131) also causes the operating tension of the web 8 to fluctuate. Particularly, in a high-speed operation of 1500 m / min or more, the splice success rate is greatly reduced. This is one of the causes.

The present invention has been made in view of the above-mentioned problems, and has a stable web without reducing the success rate of frame replacement even when handling a web roll having increased weight due to an increase in web width or winding diameter. It is an object of the present invention to provide a continuous unwinding apparatus and a continuous unwinding method of a web, which enable unwinding of a web.

[0020]

In order to achieve the above object, a continuous unwinding apparatus according to the present invention comprises a pair of parallel guide rails on which both ends of a web roll are placed, and a pair of guide rails. A conveying device that conveys the web roll from a predetermined unwinding start position to a predetermined unwinding end position, and is connected to the web roll at least when the web is unwound from the web roll, and the web roll is rotationally driven. A rotation driving device that performs tension control of the web consistently from the start of unwinding to the end of unwinding, and is disposed between the unwinding start position and the unwinding end position, and is located at the unwinding end position. By bonding the unwinding end of a new web roll at the unwinding start position to the web being unwound from the web roll, and cutting the upstream portion of the portion where the unwinding end is bonded in the width direction of the web. ,above From the web roll at the end position out it is characterized in that a Wakukawa device for performing a frame replacement to a new web roll in the unwinding starting position described above.

In addition, at the time when the unwinding of the web from the web roll is started at the unwinding start position and the diameter of the web roll is reduced to a predetermined diameter, the conveying device starts moving from the unwinding start position to the unwinding position. It is preferable to be configured to start conveying the web roll to the unwinding end position. Thereby, since the web roll is transported after it has become lighter to some extent, the load applied to the transport device can be reduced and the web roll can be transported more stably,
It is possible to further reduce fluctuations in web tension.

Further, the web roll is forcibly positioned at the unwinding start position at least from the start of unwinding of the web to the start of transport to the unwinding end position by the transport device. It is also preferred to have positioning means. In the initial state of unwinding, the weight of the web roll is large, and once it starts moving, a large braking force is required to stop the web roll. At this time, there is a possibility that the web tension may fluctuate. By forcibly positioning the roll at the unwinding start position, it is possible to prevent the web roll from moving and further reduce fluctuations in web tension.

In this case, the conveying device moves the gripping member along the traveling rail, the gripping member gripping the end of the web roll, the traveling rail disposed parallel to the guide rail. Preferably, a moving actuator is provided, and the position of the holding member is controlled by the moving actuator, so that the web roll is forcibly positioned at the unwinding start position. Further, a stop device for stopping the web roll carried in along the pair of guide rails at the unwinding start position is provided, and the stopping device forcibly positions the web roll at the unwinding start position. It is also preferable to be configured as follows. More preferably, forcible positioning of the web roll is performed by using both the position control of the gripping member by the movement actuator and the stopping device.

Further, a pair of the rotary drive devices are provided,
While controlling the tension of the web unwound from the web roll at the unwinding end position by one of the rotary driving devices, a new web roll at the unwinding start position is controlled by the other rotary driving device. It accelerates to the running speed of the web, and after the frame is changed by the frame changing device, the other rotary drive device controls the tension of the web unwound from the new web roll at the unwinding start position. It is also preferred to be configured. Thereby, the frame can be quickly changed, and the web roll can be rotated and driven by the same rotary drive device from the acceleration to the end of unwinding, so that the fluctuation of the web tension can be further reduced. .

Further, the pair of guide rails are preferably formed horizontally or substantially horizontally at least from the unwinding start position to the unwinding end position. Thereby, the load at the time of conveyance of the web roll by the conveyance device can be reduced, the web roll can be more stably conveyed, and the fluctuation of the web tension can be further reduced.

In order to achieve the above object, a continuous unwinding method of a web according to the present invention is characterized in that while unwinding a web from a web roll, the web roll is moved from a predetermined unwinding start position to a predetermined unwinding end position. A transporting step of transporting a new web roll to the unwinding start position, a transporting step of transporting a new web roll to the unwinding start position, and an unwinding of the web roll transported to the unwinding end position. And a frame changing step of changing the frame to the new web roll carried in at the start position, and at least while the web is being unwound from the web roll, a rotary drive device is connected to the web roll. From the start of unwinding to the end of unwinding, the tension of the web unwound from the web roll is controlled by the same rotary driving device.

Preferably, prior to the transporting step,
An unwinding start step of starting unwinding of the web from the web roll at the unwinding start position, and when the diameter of the web roll is reduced to a predetermined diameter, the unwinding end is performed from the unwinding start position. The transfer of the web roll to a position is started. As a result, the web roll is conveyed after it is lightened to some extent, so that the load at the time of the conveyance can be reduced and the web roll can be conveyed more stably, and the fluctuation in the web tension is further reduced. It becomes possible to do.

In the unwinding start step, the web roll is forcibly moved to the unwinding start position at least from the start of unwinding of the web to the start of transport to the unwinding end position. It is also preferable to position it at the position. Thereby, the movement of the web roll in the initial state of unwinding with a heavy weight can be prevented, and the fluctuation in the tension of the web can be further reduced.

[0029] In this case, the web roll may be forcibly positioned at the unwinding start position by controlling the position of a transport device that transports the web roll, and the web roll is provided close to the transport surface of the web roll. The web roll may be forcibly positioned at the unwinding start position by a stopping device. More preferably, forcible positioning of the web roll is performed by using the position control of the transport device and the stopping device together.

Further, prior to the frame changing step, an accelerating step of accelerating the new web roll carried into the unwinding start position in the carrying-in step to a running speed of the web is provided. Preferably, the web drive is accelerated by the rotary drive used when unwinding the web from the new web roll. Thereby, the frame can be quickly changed, and the web roll can be rotated and driven by the same rotary drive device from the acceleration to the end of unwinding, so that the fluctuation of the web tension can be further reduced. .

[0031]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 7 show a continuous unwinding device according to a first embodiment of the present invention. here,
The continuous unwinding device of the present invention is configured as a top feed type continuous unwinding device.

As shown in FIGS. 1 to 4, the continuous unwinding device 1 includes a pair of horizontal guide rails (guide rails) 2, 2 supported by a frame 12 and a fixed stand 13.
It has. These horizontal guide rails 2, 2 are members for supporting the unwinding web roll (web roll) 7, and the support surface for supporting the unwinding web roll 7 is formed horizontally or substantially horizontally, and is arranged in the width direction of the apparatus. They are installed in parallel at predetermined intervals. As shown in FIGS. 3 and 4, the continuous unwinding device 1 is substantially symmetrical to the left and right, and includes a large number of left and right members and devices like the horizontal guide rails 2 and 2 described above. Therefore, in this specification, in the case of a pair of left and right members and devices, especially when the left side in FIGS. 3 and 4 needs to be specified, L is added to the end of the code, and when it is necessary to specify the right side, the code is used. Is added at the end of the symbol, and R and L are not added unless it is particularly necessary to specify one of them.

The unwinding web roll 7 is formed by winding a web (base paper) 8 around a reel spool 4 serving as a central axis, and has a cylindrical bearing box 73 provided at both ends of the reel spool 4. , 73 on the horizontal guide rails 2, 2. An annular groove 73a (see FIGS. 3 and 4) is formed outside the bearing box 73. When the unwinding web roll 7 is installed on the horizontal guide rails 2, 2, the grooves 73a, 73a of these reel spools 4 are formed.
The horizontal guide rails 2 and 2 are engaged with 73a, respectively, so that the bearing boxes 73 and 73 can run on the horizontal guide rails 2 and 2, respectively. Therefore, the unwinding web roll 7 can rotate freely in the bearing boxes 73, 73 and moves along the horizontal guide rails 2, 2 while maintaining a posture perpendicular to the horizontal guide rails 2, 2. You can do it.

A slight downward gradient is provided on the upstream side (left side in FIG. 1) of the horizontal guide rails 2 and 2. And
At a predetermined position (position k in FIG. 1) in the middle of the area where the downward slope is provided, a standby position where a new unwinding web roll 7 is made to wait is set. At the standby position k, a stopper 14 is provided inside each horizontal guide rail 2. The stopper 14 is attached to the horizontal guide rail 2 so as to be swingable about a fulcrum 14a, and the downstream side of the fulcrum 14a is supported by a cushion cylinder 15 provided on a toggle 17. Cushion cylinder 15
Is pin-connected to one end of a toggle 17, and the other end of the toggle 17 is pin-connected to a bracket 16 fixed to the frame 12. A hydraulic cylinder 18 is provided on the bracket 16, and the rod end of the hydraulic cylinder 18 is pin-connected to the toggle 17. With such a configuration, the unwinding web roll 7 carried into a predetermined position (upstream from the standby position k) on the horizontal guide rail 2 by a crane or the like rolls downstream due to the inclination of the horizontal guide rail 2. In the standby position k, the bearing box 73 is engaged with the stoppers 14, 14. Then, the hydraulic cylinder 18 is contracted and the space between the toggle 17 and the cushion cylinder 15 is bent in a V-shape.
Is pivoted downward (clockwise in FIG. 1) to release the engagement of the bearing box 73, and the bearing box 7 is moved by the upstream end of the stopper 14.
3 is pushed out toward the downstream side.

At the most downstream position (position m in FIG. 1) of the region where the down slopes of the horizontal guide rails 2 and 2 are provided, the unwinding start for starting the unwinding of the web 8 from the unwinding web roll 7 is started. The position has been set. And this unwinding start position m
Has a stopper 14 inside each horizontal guide rail 2 as in the standby position k. As a result, the unwinding web roll 7 extruded from the standby position k rolls further downstream due to the inclination of the horizontal guide rail 2, and at the unwinding start position m, the bearing box 73 is stopped by the stopper (stop device) 14. , 14 to be positioned. The stopper 14 is swingably attached to the horizontal guide rail 2 similarly to the standby position k, and is supported by the cushion cylinder 15, the toggle 17, and the hydraulic cylinder 18. Here, the hydraulic cylinder 18 is provided on a bracket 16 fixed to the fixed stand 13, and the toggle 17 is also pin-connected to the bracket 16.

The unwinding start position m is determined by setting an intermediate unwinding web roll diameter (two in FIG. 1) that is approximately half the diameter of the unwinding web roll 7 (shown by a solid line in FIG. 1). (Indicated by a dashed line) at which the web 8 is unwound downward. Normally, the unwinding start position m is not changed after being adjusted and determined at the time of installation. Simultaneously with the loading into the unwinding start position m, the unwinding web roll 7 is mounted on an unwinding web roll transport device (transport device) 74 shown in FIGS. . Then, at the time when the unwinding at the unwinding start position m has progressed to the intermediate unwinding roll diameter, the unwinding web roll conveying device 74 horizontally conveys the unwinding end position n shown in FIGS. Further, at the unwinding end position n, further unwinding is performed. Hereinafter, a specific configuration of the unwinding web roll transport device 74 will be described.

The unwinding web roll transporting device 74 more accurately positions the unwinding web roll 7 loaded from the standby position k to the unwinding start position m, and unwinds the web roll 7 along the horizontal guide rails 2. This is a device for moving the roll 7 horizontally, and is provided side by side outside the horizontal guide rails 2 and 2. The unwinding web roll transfer device 74 includes an upper transfer device 50 provided above the transfer surface of the reel spool 4 and a lower transfer device 4 provided below the transfer surface.
1 (moving together with a web roll drive system to be described later). The upper transfer device 50 and the lower transfer device 41 are provided outside each of the horizontal guide rails 2, 2, and the upper transfer device 50 on one side and the lower transfer device 41 on the other side form a pair. Thus, the unwinding web roll transport device 74 is configured.

That is, as shown by the solid line in FIG. 3, the upper transfer device 50R on the right and the lower transfer device 41L on the left are operated in cooperation with each other, as viewed from the upstream side of the device. Lower transfer device 41L and upper transfer device 5
The unwinding web roll transport device 74 constituted by OR is referred to as a first unwinding web roll transport device 74 (50R, 41L). As shown by a solid line in FIG. 4, the upper transport device 50L on the left and the lower transport device 41R on the right are operated in cooperation with each other when looking at the upstream side of the device. The unwinding web roll conveying device 74 composed of the device 50L and the lower conveying device 41R is replaced with a second unwinding web roll conveying device 74 (41R, 50L).
Shall be called.

The respective components of the upper transfer device 50 and the lower transfer device 41 will be described. First, the upper transfer device 5
Reference numeral 0 denotes a carriage (gripping member) 46 that engages with the bearing box 73 of the reel spool 4, a support beam 60 that supports the carriage 46, and a linear actuator (moving actuator) 39 that moves the carriage 46. ing. The carriage 46 is formed in a concave shape below, and a roller 47 is provided at each end of the carriage so as to directly contact the outer peripheral surface of the bearing box 73 to grip the bearing box 73. The bearing box 73 is engaged with the rollers 47, 47 so as to sandwich the bearing box 73 from above.

The support beam 60 for supporting the carriage 46 is connected at both ends to the inside of the frames 71, 71 (on the side of the horizontal guide rail 2) by hinges 68, 68, and the upper ends of both ends are air cylinders 58, 58. Is suspended through. Since the air cylinder 58 is pin-connected between the bracket 59 fixed to the frame 71 and the support beam 60, the support beam 60 swings about the hinge 68 by expanding and contracting the air cylinder 58. This allows the carriage 46 supported by the support beam 60 to be attached to and detached from the bearing box 73 of the reel spool 4.

The linear actuator 39 supports the support beam 6
0 at the downstream end. From the linear actuator 39, a screw rod 48 rotatably supported at both ends by bearings 70, 70 extends upstream, and a carriage 46 is screwed to the screw rod 48. The screw rod 48 is rotationally driven by a linear actuator 39, whereby the carriage 46 moves along a rail (travel rail) 60 a parallel to the horizontal guide rail 2 provided on the support beam 60. The position control of the linear actuator 39 for controlling the rotation amount of the screw rod 48 is performed by a control device described later.

Next, the lower conveying device 41 includes a carriage 42 engaged with the bearing box 73, a carriage elevating device 75 supporting the carriage (gripping member) 42 and elevating the bearing box 73, and a carriage elevating device. And a linear actuator (moving actuator) 40 for moving the moving member 75 along the horizontal guide rail 2. The carriage 42 is formed concavely above,
A roller 43 is provided at each end to directly contact the bearing box 73 and grip the bearing box 73. The roller 43 is engaged with the bearing box 73 so as to sandwich the bearing box 73 from below.

The carriage lifting device 75 includes a support arm 62 for supporting the carriage 42 and a support arm 62.
And a carriage elevating cylinder 63 for elevating and lowering the carriage 42 by swinging the carriage 42. The support arm 62 has a carriage 42 fixedly mounted at the front end thereof and a rear end connected to a rod 63a of a lifting cylinder 63 with a pin, and an intermediate portion rotatably supported by a pin 62a. Therefore, by extending and retracting the rod 63a of the elevating cylinder 63, the support arm 62 swings around the pin 62a to move the carriage 42 at the distal end.
Is moved up and down to be attached to and detached from the bearing box 73.

The carriage elevating device 75 is installed on a rail (travel rail) 76 provided on the upper surface of the moving table 57, and a connecting member 77 protruding from the lower surface of the carriage elevating device 75 extends along the rail 76. It penetrates the provided groove 78, and its lower end projects below the groove 78. A linear actuator 40 is fixedly provided on the downstream side of the moving table 57, and a screw rod 49 extending from the linear actuator 40 toward the upstream side below the groove 78 and having both ends pivotally supported by bearings 69, 69. Are arranged. The lower end of the connecting member 77 is screw-coupled to the screw rod 49, and the carriage lifting device 75 moves along the rail 76 when the screw rod 49 is rotationally driven by the linear actuator 40. Since the rail 76 is provided in parallel with the horizontal guide rail 2, the carriage elevating device 7 moves with the movement of the carriage elevating device 75.
The carriage 42 supported by 5 also moves in parallel along the horizontal guide rail 2. The linear actuator 40 is the same as the linear actuator 39 described above.
In the same manner as described above, position control for controlling the amount of rotation of the screw rod 49 is performed, and synchronization with the corresponding linear actuator 39 is established.

The carriage elevating device 75 further includes a reel spool driving device (rotation driving device) 79 for controlling the tension of the unwinding web 8 by applying a torque to the reel spool 4.
Is provided. The reel spool driving device 79 includes a driving motor 67, a clutch 65, and a clutch shift cylinder 64, and applies torque output from the driving motor 67 via the driving pulley 45, the belt 80, and the driven pulley 81. The power is transmitted to the output shaft 82. The output shaft 82 can be extended and contracted in a direction perpendicular to the horizontal guide rail 2 by a clutch shift cylinder 64. By operating the clutch shift cylinder 64 to extend and contract the output shaft 82, the output shaft 82 is provided at the tip of the output shaft 82. The attached clutch 65 can be attached to and detached from the clutch block 66 at the shaft end of the reel spool 4. When the clutch 65 is engaged with the shaft end of the reel spool 4, torque is transmitted from the drive motor 67 to the reel spool 4.

The unwinding web roll conveying device 74 moves the new unwinding web roll 7 from the standby position k to the unwinding start position m.
Rolls and locks with the stoppers 14, 14, and moves the bearing box 73 of the reel spool 4 to the upper transfer device 50,
While being gripped by the respective carriages 46 and 42 of the lower transfer device 41, a clutch 65 is connected to the shaft end of the reel spool 4, and the unwinding web roll 7 is rotated in the direction of arrow A in FIG. ing. Then, when the splicing of the web to the new unwinding web roll 7 is performed by the splice described later and the unwinding of the web 8 is started, the unwinding web roll 7 is unrolled by the linear actuators 39 and 40 and the stopper 14 to the unwinding start position m. While holding
The tension control of the web 8 during unwinding is performed by controlling the torque of the drive motor 67.

When the unwinding of the web 8 further proceeds and the diameter of the unwinding web roll 7 reaches the diameter of the intermediate unwinding web roll (indicated by a two-dot chain line in FIG. 1), the unwinding web roll transport device 74 The unwind web roll 7 is conveyed along the horizontal guide rails 2 and 2 while the tension control of the web 8 is continued by the torque control of the drive motor 67. At this time, each linear actuator 39, 40
Move the carriages 46 and 42 in synchronization with each other so as not to change the axial direction of the unwinding web roll 7.

The unwinding web roll transporting device 74 transports the unwinding web roll 7 from the unwinding start position m to the unwinding end position n.
The drive of 9, 40 is stopped. And
When the diameter of the unwinding web roll 7 reaches a predetermined remaining paper diameter by unwinding the web 8 at the unwinding end position n, when the web 8 is spliced to a new unwinding web roll 7 by splicing, which will be described later. The delivery web roll transport device 74 removes the carriages 46 and 42 from the respective bearing boxes 73 and moves back to the unwinding start position m.

It should be noted that one unwinding web roll conveying device 7
4, for example, the first unwinding web roll transport device 74 (50
R, 41L), while the unwinding web roll 7 is being conveyed to unwind the web 8, the other second unwinding web roll conveying device 74 (50L, 41R) uses the 46L, 4L.
2R is returned to the unwinding start position m, connected to the unwinding web roll 7 waiting for the next unwinding, and the clutch 65
L is engaged to accelerate the unwinding web roll 7. Thus, the first unwinding web roll transport device 7
4 (50R, 41L) and the second unwinding web roll transport device 74 (50L, 41R) alternately transport the unwinding web roll 7, so that the web 8 can be unwinded continuously without interruption. It has become. The details of the transfer control of the unwinding web roll transfer device 74 during unwinding of the web 8 will be described later.

A splicing device (frame changing device) 6 is provided below the horizontal guide rail 2 and between the unwinding start position m and the unwinding end position n. Splice device 6
When the unwinding web roll 7 during unwinding at the unwinding end position n reaches a predetermined remaining paper diameter, the web 8 is spliced to a new unwinding web roll 7 rotating at the unwinding start position m. This is a device that changes the frame of the unwinding web roll 7 by performing the above operation. 5 and 6, the splicing device 6 includes a lead-in roll 22, a full-width saw blade-type paper cutting device 28, a splice roll 23, and a lead-off roll 24 inside a pair of left and right splice arms 31, 31. I have. The splice arms 31 and 31 are framed by a cross stay 25 extending in the width direction. Each splice arm 31 has its upstream end rotatably supported by an arm fulcrum 20 provided on the fixed stand 13. The lower end on the downstream side is supported by a jack 21. The jack 21 has a bracket 32 fixed to the pit floor 34.
It is supported rotatably.

The lead-off roll 24 is disposed on the most upstream side (the most upstream side in the running direction of the unwinding web roll 7) between the splice arms 31, and the lead-in roll 22 is disposed on the most downstream side. ing. A splice roll 23 is disposed between the lead-off roll 24 and the lead-in roll 22, and a full-width saw blade type paper cutting device 2 is disposed between the lead-in roll 22 and the splice roll 23.
8 are provided. With such an arrangement, the web 8 unwound downward from the upper side of the unwinding web roll 7 is guided by the lead-off roll 24 when the unwinding web roll 7 is at the unwinding start position m. As the web roll 7 is carried out and advances from the unwinding start position m to the unwinding end position n, it is sequentially guided by the splice roll 23 and the lead-in roll 22.
The lead-in roll 22 and the lead-off roll 24
Are driven by drive motors 52 and 54, respectively, and the splice roll 23 is driven by a drive motor 53 via a pulley 55 at the same speed as the web 8.
The splice roll 23 is supported by a pressure cylinder 27 attached to the cross stay 25,
The full width saw blade type paper cutting device 28 is rotatably mounted on a bracket 51 fixed to the cross stay 25 and is supported by a cut cylinder 30.

The unwinding web roll 7 at the unwinding end position k
Is approaching a predetermined remaining paper diameter, the jack 21 is activated by a detection signal from a sensor (not shown). The operation of the jack 21 causes the splice arm 3
1 rotates upward from a standby position indicated by a two-dot chain line in FIG. 5 around an arm fulcrum 20 and guides the web 8 by each of the rollers 22 to 24 so as to guide a new unwinding web roll 7 at the unwinding start position m. To approach the surface. A phototube (not shown) is provided near the surface of the splice roll 23, and the jack 21 closes a distance between the surface of the unwinding web roll 7 and the splice roll 23 to a predetermined distance (about 10 mm) based on a signal from the phototube. It stops at the point of time. The position control of the unwinding web roll 7 may be performed by controlling the stroke with a linear sensor or the like of the jack 21.

The unwinding web roll 7 at the unwinding end position k
Is closer to a predetermined remaining paper diameter, an acceleration start signal is input to the reel spool driving device 79 of the new unwinding web roll 7 at the unwinding start position m. The speed is accelerated until the speed becomes the same as the web 8. When the remaining paper length of the unwinding web roll 7 at the unwinding end position k is finally reduced, the position of the double-sided adhesive tape 10 affixed to the unwinding end (see FIG. 11) of the new unwinding web roll 7 is changed. The web 8 is caught by a non-contact type reflective photoelectric tube or the like, and the web 8 is momentarily pressed against the surface of the unwinding web roll 7 via the splice roll 23 by the operation of the pressurizing cylinder 27. As a result, the web 8 is stuck to the double-sided adhesive tape 10 on the surface of the unwinding web roll 7, and the web 8 is instantly put away and the full-width saw blade type paper cutting device 28
Is operated by the cutting cylinder 30 to cut the web 8, and the splicing is completed. At this time, the respective operation timings of the pressurizing cylinder 27 and the cut cylinder 30 are set so that the tail length of the web 8 is about 1 m. After completion of the splicing, the drive motor 67 of the reel spool driving device 79 on the side where the unwinding has been completed is driven by the reel spool driving device 79 on the new unwinding web roll 7 side.
The control of the tension is immediately switched to the drive motor 67, so that the switching of the unwinding web roll 7, that is, the frame change, is completed while the coating in the downstream coating process is continued.

The reel spool 4 from which the base paper has been unwound and which is almost empty is stopped by the regenerative braking of the drive motor 67 of the reel spool driving device 79, and then the carriages 46 and 42 are stopped.
Is released, and subsequently pushed out to the downstream side by a lever 36 provided inside the horizontal guide rails 2 and 2. The lever 36 has a downstream end rotatably connected to the horizontal guide rail 2 and an upstream lower end supported by a kick-out cylinder 35 pin-connected to a bracket 37 fixed to the frame 12. The lever 36 is rotated clockwise in FIG. 1 by the operation of the kick-out cylinder 35 to push the bearing box 73 out.

The horizontal guide rails 2, 2 are at the unwinding end position n.
, The reel spool 4 pushed out by the lever 36 rolls toward the downstream end of the horizontal guide rails 2, 2 and is provided at the take-out position p at the downstream end. It hits the cushion stopper 19 and stops. The reel spool 4 is discharged to the outside by a building overhead crane (not shown) at the take-out position p.

Since the continuous unwinding device according to the first embodiment of the present invention is configured as described above, the continuous unwinding of the web 8 is performed by unwinding control (a method of continuously unwinding the web) as described below. Out is performed. Hereinafter, the continuous unwinding method of the web according to the present embodiment will be described with reference to FIG. The following control is integrally performed by a controller (control device) (not shown) provided in the continuous unwinding device 1. Also, here, it is assumed that the first unwinding web roll transfer device 74 (50R, 41L) holds and transfers the unwinding web roll 7 first.

First, the state in which the web 8 is being unwound from the unwinding web roll 7 at the unwinding start position m as shown in FIG. 7A will be described. At the unwinding start position m, the web 8 is unrolled downward from the unwinding web roll 7 and guided out by the lead-off roll 24 of the splicing device 6 to be unloaded. At this time, the linear actuators 40L and 39R are in a stopped state until the unwinding web roll 7 reaches the initial unwinding web roll diameter indicated by the two-dot chain line from the initial diameter shown by the solid line, and is not shown downstream of the lead-off roll 24. The torque of the drive motor 67L is controlled based on a tension signal from a tension detector provided on the carrier roll, and the tension of the web 8 is controlled. In this state, the splice device 6 is at the lower limit standby position.

When the unwinding web roll 7 reaches the set diameter (intermediate unwinding web roll diameter), the linear actuator 40
L and 39R operate in synchronization with each other, that is, in an operation programmed so that the axis of the reel spool 4 and the horizontal guide rails 2 and 2 maintain a right angle, and unwind as shown in FIG. The unwinding web roll 7 is moved horizontally to the end position n. The web 8 comes into contact with the splice roll 23 and the lead-in roll 22 in order, and runs while being guided by the lead-in roll 22, the splice roll 23, and the lead-off roll 24. During this time, the first unwinding web roll transport device 74 (50R, 41L) and the drive motor 67L
In this continuous unwinding device 1, one unwinding web roll 7 is handled by one transfer device and a drive motor from the unwinding start position m to the unwinding end position n.
It is a big feature of. At the same time as this operation, a new unwinding web roll 7 in which the double-sided adhesive tape 10 and the tab stopper 9 are prepared in advance is formed by utilizing the downward slope of the upstream end of the horizontal guide rails 2. It is sent to the standby position k and is positioned by the stopper 14.

Next, when the unwinding web roll 7 at the unwinding end position n has a moderately small diameter as shown in FIG. 7C, a new unwinding web at the standby position k is manually or automatically signaled. The roll 7 is fed to the unwinding start position m by utilizing the downward slope of the upstream end of the horizontal guide rails 2 and 2, and the stopper 14 performs initial positioning. Subsequently,
Second unwinding web roll transfer device 74 (50L, 41R)
Engages with the unwinding web roll 7 to perform precise positioning of the unwinding web roll 7 at the unwinding start position m, and torque is transmitted from the drive motor 67R to the reel spool 4 via the clutch 65 to unwind. The web roll 7 starts rotating.

When the unwinding web roll 7 is further unwound at the unwinding end position n and reaches a predetermined remaining paper diameter (remaining paper diameter in preparation for frame change), the stroke is determined by the rotation speed of the linear sensor and the rotary encoder. By the operation of the controlled jack 21, the splice device 6 is raised from the lower limit standby position as shown in FIG. 7D. The splicing device 6 that has risen stops when the gap between the surface of the splice roll 23 and the surface of the unwinding web roll 7 at the unwinding start position m approaches a distance of about 10 mm.

Further, when the unwinding web roll 7 at the unwinding end position n has a predetermined remaining paper diameter (remaining frame diameter), the position of the adhesive tape 10 of the unwinding web roll 7 at the unwinding start position m is detected. Then, as shown in FIG. 7E, the pressure cylinder 27 is operated immediately before the adhesive tape 10 comes near the splice roll 23. Thereby, the running web 8 guided by the splice roll 23 is instantaneously pressed against the unwinding web roll 7, and the unwinding end 7 a of the unwinding web roll 7 (see FIG. 11) is adhered to the web 8 by the adhesive tape 10. Adhered to. The unwinding end 7a of the unwinding web roll 7 adhered to the web 8 is unrolled downward together with the web 8.

Then, after a set time from the above splicing operation, the cutting cylinder 30 is operated to press the full width saw blade type paper cutting device 28 against the web 8. As a result, FIG.
As shown in (f), the web 8 being unwound from the unwinding web roll 7 at the unwinding end position n is cut, and the drive for driving the unwinding web roll 7 at the unwinding end position n is performed. Rapid braking is applied to the motor 67L. Further, the cut cylinder 30 automatically returns after cutting the web 8. By the above operation, the switching of the unwinding web roll 7, that is, the frame change is completed.

After the completion of the frame change, the splice roll 23 immediately descends to the retraction limit position, and as shown in FIG. 7 (g), the entire splice device 6 also descends to the standby position. Subsequently, the second unwinding web roll transport device 74 (50R, 4
Empty reel spool 4 released from connection with 1L)
After rolling down the down slope at the downstream end of the horizontal guide rails 2, 2 by the operation of the levers 36, 36, the rolls 36 hit the cushion stopper 19 at the take-out position p and stop, and are moved above the horizontal guide rails 2, 2 by the overhead crane. Is taken out from the outside. On the other hand, the web 8 is unwound from the new unwound web roll 7 while the tension is controlled by the drive motor 67R [hereinafter, the repetition from FIG. 7A].

As described above, according to the continuous unwinding apparatus 1, the web 8 is unwound from the unwinding web roll 7 on the horizontal guide rails 2, 2, so that the unwinding posture of the unwinding web roll 7 during unwinding. And the fluctuation of the tension of the web 8 due to the deviation of the axis of the unwinding web roll 7 or the vibration can be reduced. Therefore, even when handling the large-diameter unwound web roll 7 or when the web 8 is unwound at a running speed of 1500 m / min or more, the stable unwinding of the web 8 can be performed without lowering the success rate of the frame change. Can be realized.

In particular, in the present continuous unwinding apparatus 1, after the diameter of the unwinding web roll 7 is reduced to a predetermined intermediate unwinding web roll diameter and the unwinding web roll 7 becomes lighter to some extent,
Since the transport of the unwinding web roll 7 is started, the load applied to each of the linear actuators 39 and 40 can be reduced, and the unwinding posture of the unwinding web roll 7 can be further stabilized.

Further, in the initial state of unwinding, the weight of the unwinding web roll 7 is large, and once it starts moving, a large braking force is required to stop the unwinding web roll 7, and at that time, the tension of the web 8 may fluctuate. . In this regard, in the continuous unwinding device 1, the unwinding web roll 7 is forcibly moved to the unwinding start position m until the unwinding web roll 7 has a predetermined intermediate unwinding web roll diameter. Since the unwinding of the web 8 is performed in the positioned state, the unwinding web roll 7 does not start moving when unwinding the web 8, so that the fluctuation in the tension of the web 8 can be further reduced. In particular, in the continuous unwinding apparatus 1, the above-described positioning is performed by using both the position control of the carriages 46 and 42 by the linear actuators 39 and 40 and the resistance force by the stopper 14, so that the unwinding web roll 7 is more reliably held. At the unwinding start position m.

Further, according to the present continuous unwinding apparatus 1, the same reel spool drive can be consistently performed from the start of unwinding to the end of unwinding without switching the clutch during unwinding of the web 8 as in the prior art. Web 8 by device 79
, The fluctuation of the tension of the web 8 can be further reduced. Further, since the unwinding web roll 7 is accelerated during the frame change by the same reel spool driving device 79 as at the time of unwinding, there is no clutch switching from the acceleration to the end of unwinding. Can be further reduced. In addition, there is an advantage that control is simplified because there is no need to match the clutch switching timing.

Next, a continuous unwinding device according to a second embodiment of the present invention will be described with reference to FIG. The present continuous unwinding device is configured as a bottom feed type continuous unwinding device, and the configuration of the main part is the same as that of the first embodiment described above. Therefore, the same parts as those in the above-described first embodiment are denoted by the same reference numerals in FIG. 8, and the overlapping description will be omitted. Although not shown in FIG. 8, this continuous unwinding device also includes an unwinding web roll transport device and a reel spool drive device having the same configuration as in the first embodiment.

As shown in FIG. 8, in the continuous unwinding device 90, the splice (frame changing device) device 89 is moved above the horizontal guide rails 2, 2 (only one side is shown in FIG. 8). And the unwinding end position n. The splice device 89 includes a pair of left and right splice arms 91, 91.
(Only one side is shown in FIG. 8), a lead-in roll 92, a full-width saw blade type paper cutting device 95, and a splice roll 9 are provided inside.
3 and a lead-off roll 94. The splice arm 91 has its upstream end rotatably supported by an arm fulcrum 87 provided on a suspension beam 96 extending above the horizontal guide rail 2, and has a downstream upper portion supported by a jack 88. Have been. The jack 21 is rotatably supported by the suspension beam 96.

The lead-off roll 94 is disposed between the splice arms 91, 91 on the most upstream side (the most upstream side in the running direction of the unwinding web roll 7), and the lead-in roll 92 is disposed on the most downstream side. ing. A splice roll 93 is disposed between the lead-off roll 94 and the lead-in roll 92, and a full-width saw blade-type paper cutting device 9 is disposed between the lead-in roll 92 and the splice roll 93.
5 are provided. With this arrangement, the web 8 unwound upward from the lower side of the unwinding web roll 7 is guided by the lead-off roll 94 when the unwinding web roll 7 is at the unwinding start position m. The unwinding web roll 7 is guided upward by the splice roll 93 and the lead-in roll 92 as the unwinding web roll 7 advances from the unwinding start position m to the unwinding end position n. The method of changing the frame by the splice device 89 is the same as in the first embodiment, and a description thereof will not be repeated.

The empty reel spool 4 after the frame change is the first reel spool.
The kick-out cylinder 35 and the lever 36 as in the embodiment.
As a result, it is kicked out from the unwinding end position m to the unloading position p. However, as described above, the horizontal guide rail 2
Since the suspension beam 96 is extended above the
The take-out position p using a building overhead crane as in the embodiment.
Cannot be taken out of the reel spool 4. Therefore, in the present continuous unwinding device 90, the reel spool 4 is lowered below the horizontal guide rail 2 using the lowering device 84 instead of taking out the reel spool 4 upward. An inclined table 85 is provided at a lower limit position of the descending device 84, and the reel spool 4 is lowered on the inclined table 85, and is conveyed outside by a take-out conveyor 86.

As described above, the continuous unwinding device 90 differs from the first embodiment only in the unwinding direction of the web 8, and there is no difference in the configuration of the main part. Further, the unwinding control of the web 8 by the controller (control device) (the continuous unwinding method of the web) is only different in the unwinding direction of the web 8. Therefore, even when the continuous unwinding device 90 unwinds the web 8, the same effect as in the first embodiment can be obtained. That is, by unwinding the web 8 from the unwinding web roll 7 on the horizontal guide rails 2 and 2, the unwinding posture of the unwinding web roll 7 at the time of unwinding is stabilized, and the axis of the unwinding web roll 7 is adjusted. It is possible to reduce the fluctuation of the tension of the web 8 due to the fluctuation and the vibration, and to control the fluctuation of the tension of the web 8 by performing the tension control of the web from the start to the end of the unwinding by the same reel spool driving device. Further, the web can be constantly unwound without lowering the success rate of the frame change.

Although the two embodiments of the continuous unwinding device of the present invention have been described above, the embodiments of the present invention are not limited to these. For example, in the above-described embodiment, the stopper 14 is also used for forcibly positioning the unwinding web roll 7 to the unwinding start position m. However, forcible positioning is performed only by the position control by the linear actuators 39 and 40. Is also possible.

In the above-described embodiment, the stopper 14
To stop the unwinding web roll 7 at the standby position k and the unwinding start position m. However, the unwinding web roll 7 is stopped at the standby position k and the winding position by a brake device using frictional force or a magnet device using magnetic force. The unwinding web roll 7 may be stopped at the unwinding start position m, or may be forcibly positioned at the unwinding start position m by these devices.

Further, the configuration of the unwinding web roll transport device for transporting the unwinding web roll 7 along the horizontal guide rails 2 and 2 is not limited to the configuration of the above-described embodiment. It can be used. For example, in each of the above embodiments, the linear actuator 3
9 and 40, the carriage 4 via the screw rods 48 and 49.
Although the carriages 6 and 42 are moved, for example, the carriage (gripping member) itself may be a self-propelled type having a drive source (movement actuator).

[0076]

As described in detail above, according to the continuous unwinding device of the present invention, the web is unwound from the web roll while being conveyed on a pair of parallel guide rails by the conveying device, so that the unwinding can be performed. The unwinding posture of the web roll is stable, the fluctuation of the web tension due to the deviation of the axis of the web roll and the vibration can be reduced, and the clutch is switched during the unwinding of the web as in the related art. By controlling the tension of the web from the start of unwinding to the end of unwinding consistently using the same rotation drive device, fluctuations in the tension of the web can be further reduced. Even when handling an increased web roll, there is an effect that it is possible to always realize a stable unwinding of the web without lowering the success rate of frame replacement. .

According to the continuous web unwinding method of the present invention, the web is unwound from the web roll while being conveyed along a horizontal or substantially horizontal conveying surface, thereby unwinding the web roll during unwinding. The posture is stable, the fluctuation of the web tension due to the deviation of the axis of the web roll or the vibration can be reduced, and the winding from the start of unwinding without changing the clutch during the unwinding of the web as in the past. By controlling the tension of the web by the same rotary drive unit until the end of unloading, fluctuations in the tension of the web can be further reduced. Even in this case, there is an effect that it is possible to always realize a stable unwinding of the web without lowering the success rate of the frame change.

[Brief description of the drawings]

FIG. 1 is a side view showing a configuration of a continuous unwinding device as a first embodiment of the present invention, and is a diagram excluding an unwinding web roll transport device.

FIG. 2 is a side view showing the configuration of the unwinding web roll transport device according to the first embodiment of the present invention, and is a diagram corresponding to FIG.

FIG. 3 is a view in the direction of arrows XX in FIGS. 1 and 2 showing the configuration of the continuous unwinding device as the first embodiment of the present invention.

FIG. 4 is a view in the YY direction of FIGS. 1 and 2 showing the configuration of the continuous unwinding device as the first embodiment of the present invention.

FIG. 5 is a side view showing the configuration of the splicing device according to the first embodiment of the present invention.

FIG. 6 is a view in the Z direction of FIG. 5 showing a configuration of the splicing device according to the first embodiment of the present invention.

FIG. 7 is a diagram showing a web unwinding procedure according to the first embodiment of the present invention, and shows the web unwinding procedure in the order of (a) to (g).

FIG. 8 is a side view illustrating a configuration of a continuous unwinding device as a second embodiment of the present invention, and is a diagram illustrating the configuration without an unwinding web roll transport device.

FIG. 9 is a side view showing a configuration of a conventional bottom feed type continuous unwinding device.

FIG. 10 is a side view showing the configuration of a conventional top feed type continuous unwinding device.

FIG. 11 is a view showing a tailoring state of an unwinding end of a general unwinding web roll.

[Explanation of symbols]

 1,90 Continuous unwinding device 2 Horizontal guide rail 4 Reel spool 6,89 Splice device 7 Unwinding web roll 8 Web 9 Tab stop 10 Double-sided adhesive tape 12 Frame 13 Fixed stand 14 Stopper 15 Cushion cylinder 16 Bracket 17 Toggle 18 Hydraulic cylinder 19 Cushion stopper 20, 87 Arm fulcrum 21, 88 Jack 22, 92 Lead-in roll 23, 93 Splice roll 24, 94 Lead-off roll 25 Cross stay 26 Splice arm 27 Pressurizing cylinder 28 Saw blade type paper cutting device 30 Cut cylinder 31 , 91 Splice arm 32 Bracket 33 Floor surface 34 Pit floor surface 35 Kick-out cylinder 36 Lever 37 Bracket 39, 40 Linear actuator 41 Lower transfer device 42, 4 6 Carriage 43, 47 Roller 44 Drive belt 45, 81 Pulley 48, 49 Screw rod 50 Upper transfer device 51 Bracket 52 to 54 Drive motor 55 Pulley 57 Moving table 58 Air cylinder 59 Bracket 60 Support beam 60a Rail 61 Slide table 62 Support Arm 62a Pin 63 Lifting cylinder 63a Rod 64 Cylinder 65 Clutch 66 Clutch block 67 Drive motor 68 Hinge 69, 70 Bearing 71 Frame 73 Bearing box 73a Annular groove 74 Unwinding web roll transfer device 75 Carriage lifting device 76 Rail 77 Connecting member 78 Groove 79 Reel spool drive device 80 Belt 82 Output shaft 84 Lowering device 85 Inclined table 86 Extraction conveyor 96 Hanging beam k Standby position m Unwinding start position n Unwinding end position p Unloading Location

Claims (13)

[Claims] 1. A pair of parallel guide rails on which both end portions of a web roll are placed, and the web roll is transported from a predetermined unwinding start position to a predetermined unwinding end position along the pair of guide rails. A rotating device that is connected to the web roll at least at the time of unwinding the web from the web roll, and rotationally drives the web roll to consistently control the tension of the web from the start to the end of unwinding. A new web roll located at the unwinding start position, disposed between the unwinding start position and the unwinding end position, and being unwound from the web roll at the unwinding end position. By bonding the unwinding end and cutting the upstream portion of the portion to which the unwinding end is bonded in the width direction of the web, the web roll at the unwinding end position and the new unwinding position at the unwinding start position are separated. What A continuous unwinding device, comprising: a frame changing device for changing a frame to a web roll. 2. The method according to claim 1, wherein when the unwinding of the web from the web roll is started at the unwinding start position and the diameter of the web roll is reduced to a predetermined diameter, the transport device starts moving the unwinding position from the unwinding start position. The continuous unwinding apparatus according to claim 1, wherein the apparatus is configured to start conveying the web roll to an unwinding end position. 3. The web roll is forcibly positioned at the unwinding start position at least from the start of unwinding of the web to the start of transport to the unwinding end position by the transport device. 3. The continuous unwinding device according to claim 2, further comprising positioning means. 4. The moving device according to claim 1, wherein the conveying device includes: a gripping member that grips an end of the web roll; a traveling rail disposed parallel to the guide rail; and a movement that moves the gripping member along the traveling rail. And an actuator, wherein the moving roll controls the position of the gripping member, thereby forcibly positioning the web roll at the unwinding start position.
The continuous unwinding device according to claim 3. 5. A stopping device for stopping the web roll conveyed along the pair of guide rails at the unwinding start position, wherein the stopping device forcibly moves the web roll to the unwinding start position. The continuous unwinding device according to claim 3, wherein the continuous unwinding device is configured to be positioned at a position. 6. A pair of the rotary drive devices are provided, and while one of the rotary drive devices controls the tension of the web unwound from the web roll at the unwinding end position, the other rotary drive device is provided. By accelerating the new web roll at the unwinding start position to the running speed of the web,
After the frame is changed by the frame changing device, the other rotary drive device controls the tension of the web unwound from the new web roll at the unwinding start position. The continuous unwinding device according to any one of claims 1 to 5. 7. The pair of guide rails is formed to be horizontal or substantially horizontal at least from the unwinding start position to the unwinding end position.
7. The continuous unwinding device according to any one of items 6 to 6. 8. A transporting step of transporting the web roll from a predetermined unwinding start position to a predetermined unwinding end position along a horizontal or substantially horizontal transport surface while unwinding the web from the web roll. A loading step of loading a web roll into the unwinding start position, and a frame for changing the frame from the web roll conveyed to the unwinding end position to the new web roll loaded into the unwinding start position. At least while the web is being unwound from the web roll, a rotary drive is connected to the web roll, and the same rotary drive is used consistently from the start of unwinding to the end of unwinding. A method for continuously unwinding a web, comprising controlling the tension of the web unwound from the web roll. 9. An unwinding start step for starting unwinding of the web from the web roll at the unwinding start position prior to the transporting step, and when the diameter of the web roll is reduced to a predetermined diameter. 9. The continuous unwinding method for a web according to claim 8, wherein the transport of the web roll from the unwinding start position to the unwinding end position is started. 10. In the unwinding start step, the web roll is forcibly moved to the unwinding start position at least from the start of unwinding of the web to the start of transport to the unwinding end position. 10. Positioning at the position
A continuous unwinding method of the described web. 11. The unwinding start step, wherein the web roll is forcibly positioned at the unwinding start position by position control of a transport device that transports the web roll. Web unwinding method. 12. In the unwinding start step, the web roll is forcibly positioned at the unwinding start position by a stopping device provided in proximity to the transport surface of the web roll. Item 12. The continuous unwinding method of a web according to Item 10 or 11. 13. An accelerating step for accelerating the new web roll carried into the unwinding start position in the carrying-in step to a running speed of the web prior to the frame changing step, wherein the accelerating step comprises: The web roll is accelerated by the rotary drive device used when unwinding the web from the new web roll.
3. The continuous unwinding method of a web according to any one of the above items 2.