JP7638599B2 - Web winding device - Google Patents

Description

The present invention relates to a winding device that winds up long webs such as films, metal foils, fabrics, and paper.

Conventionally, a winding device has been proposed for winding a web onto a reel after coating with a coating liquid and heat treatment have been completed. This winding device has two reel shafts, each of which rotates to wind the web. When one reel is fully wound with the web, the arm revolves 180° from the winding position to the removal position, and the empty reel, which does not have the web wound on it, revolves to the winding position, and the web is rewound onto the empty reel.

JP 2018-95406 A

In a winding device like the one described above, in order to start winding the web onto the empty reel, a pressure roll is required to press the web onto the empty reel. When the web to be wound is a film or the like, a rubber roll must be used as this pressure roll to prevent damage to the web. This rubber roll is heavier than metal rolls such as aluminum rolls, so when the operation starts after the web cutting operation is completed, the rubber roll has poor speed tracking, which causes damage to the web.

In view of the above problems, the present invention aims to provide a web winding device that does not damage the web when it is pressed against an empty reel, and that improves speed tracking when the web starts to wind around the empty reel.

The present invention includes two winding shafts arranged on an orbit about a revolution axis, revolving between a winding position and an unwinding position and rotating about their axes to wind up a web in an upwind or downwind manner, a first metal roll that guides the web to the winding shaft at the winding position during upwinding, a rubber roll that waits at a first waiting position near the winding position during upwinding, an upwind cutting means that cuts the web conveyed from the empty winding shaft at the winding position to the full winding shaft at the unwinding position during upwinding, and a cutting means that cuts the web conveyed from the empty winding shaft at the winding position to the full winding shaft at the unwinding position during upwinding. (1) an upper shaft replacement start operation for moving the first metal roll from an upper direct guide position where the first metal roll is directly guided to an upper indirect guide position where the first metal roll is indirectly guided to the winding shaft at the winding position via the rubber roll, and at the same time, moving the rubber roll from the first standby position to a pressable position where the web can be pressed against the winding shaft at the winding position; and (2) an upper shaft replacement end operation for moving the first metal roll from the upper indirect guide position to the upper direct guide position, and at the same time, moving the rubber roll from the pressable position to the first standby position. a pressing means for pressing a roll against the winding shaft at the winding position, and a control means, wherein the rubber roll is heavier than the first metal roll, and when the winding shaft at the winding position becomes full during first winding, the control means revolves the full winding shaft to the removal position and revolves the empty winding shaft to the winding position, and performs the upper shaft replacement start operation by the roll changing means, and presses the web transported from the first metal roll at the upper indirect guide position against the empty winding shaft at the winding position by the rubber roll at the pressing position using the pressing means, the web being transported from the empty reel at the winding position to the full reel at the unwinding position is cut by the upper cutting means, and when the web begins to be wound onto the empty reel at the winding position after the cutting, the pressing means is used to release the rubber roll from pressing against the reel, the roll changing means performs the upper reel replacement start operation, the rubber roll is made to wait at the first standby position, and the web is directly guided to the reel at the winding position by the first metal roll at the upper direct guide position.

According to the present invention, when starting to wind a web around an empty reel, the web is pressed by a rubber roll, and when winding starts, the rubber roll retreats to the first standby position, and the web is guided to the reel by the first metal roll, improving speed tracking.

FIG. 2 is an overall side view of the winding device during the upper winding operation. FIG. 2 is an enlarged view of a main portion of a state in which a rubber roll is pressed against an empty winding shaft during first winding. FIG. 1 is an enlarged view of a main portion of the web as it begins to be wound around a reel during first winding. FIG. 4 is a side view of the winding device during a lower winding operation. FIG. 2 is an enlarged view of a main portion of a state in which a rubber roll is pressed against an empty winding shaft during lower winding. FIG. 13 is an enlarged view of a main portion of the web when the web starts to be wound around the reel during the lower winding stage. FIG. 2 is an enlarged explanatory diagram of a wagon and a sub-wagon. FIG. 2 is a block diagram of a winding device.

The following describes a web W winding device 1 according to one embodiment of the present invention with reference to Figures 1 to 8. The web W may be a long film, metal foil, paper, fabric, or the like.

The winding device 1 winds the web W around a reel, and as shown in Figures 1 and 4, is composed of two devices: a winding section 2 and a guide section 3. Each will be explained in order below. In the drawings, the left side of the paper is the front and the right side is the rear. The web W is transported from the rear to the front, with the rear being downstream and the front being upstream.

(1) Winding section 2
First, the winding section 2 will be described with reference to Figures 1, 4 and 8. The winding section 2 is a device for winding the web W around a reel, and has a base 10 with a pair of left and right winding support tables 12 standing on the upper surface thereof.

The revolution shaft 14 is suspended above the pair of left and right winding support bases 12 and is rotatable horizontally. As shown in FIG. 8, this revolution shaft 14 rotates at a predetermined speed in the clockwise or counterclockwise direction by the revolution part 28, which is driven by a motor.

A pair of left and right first arms 16, 16 protrude from both left and right ends of the revolution shaft 14. A winding shaft (hereinafter referred to as the "first shaft") 22 for the web W is rotatably suspended between the tips of the pair of left and right first arms 16, 16. As shown in FIG. 7, the first shaft 22 rotates at a predetermined speed in a clockwise or counterclockwise direction by a first rotating unit 30 driven by a motor. As shown in FIG. 2 and FIG. 5, double-sided adhesive tape 68 is attached along the axial direction to the surfaces of the empty first shaft 22 and second shaft 24, so that the tip of the web W can be attached thereto.

A pair of second arms 18, 18 protrude from both left and right ends of the revolution shaft 14 in a direction 180° opposite from the first arms 16, 16. A winding shaft (hereinafter referred to as the "second shaft") 24 for the web W is rotatably suspended between the tips of the pair of second arms 18, 18. As shown in FIG. 8, the second shaft 24 rotates at a predetermined speed in a clockwise or counterclockwise direction by a second rotating part 32 driven by a motor.

Two pairs of left and right auxiliary arms 201, 202 protrude at 90° between the first arm 16 and the second arm 18 at both left and right ends of the revolution shaft 14. Guide rolls 261, 262 are respectively stretched across the two pairs of left and right auxiliary arms 201, 202. Here, they are referred to as guide roll 261, guide roll 262 in order in the counterclockwise direction from the first shaft 22. The guide rolls 261, 262 are driven.

The revolving unit 28 revolves the first shaft 22, the second shaft 24, and the two guide rolls 261, 262 on a revolving trajectory around the revolving axis 14.

When the winding unit 2 winds up the web W, the revolving unit 28 fixes the first arm 16 and the second arm 18 in a horizontal position, and the winding shaft (e.g., the first shaft 22) is rotated by the first rotating unit 30 to wind up the web W. The first arm 16 and the second arm 18 are in a horizontal position, and in FIG. 1, the first shaft 22 is in the "winding position" for the web W, and the second shaft 24 is in the replacement position for that winding shaft (hereinafter referred to as the "removal position").

(2) Guidance unit 3
Next, the guide unit 3 will be described with reference to Figures 1, 4 and 7. A guide support base 34 is provided in an upright position behind the winding unit 2 on the upper surface of the base 10 of the winding device.

Two main rails 38 are provided parallel and horizontally on the sides of the guide support base 34.

The wagon 36 is arranged so as to be freely movable in the horizontal direction on two horizontally arranged main rails 38. As shown in FIG. 7, the wagon 36 is moved at a predetermined speed by a wagon moving unit 40 driven by a linear motor.

A sub-wagon 42 is arranged on the side of the wagon 36 so that it can move horizontally. As shown in FIG. 7, the sub-wagon 42 moves horizontally by a pressure unit 44 made of an air cylinder.

The sub-wagon 42 is provided with a rotating plate 46 that can rotate freely along a vertical plane around a horizontal rotating shaft 54. A rubber roll 48, a first metal roll 50, and a second metal roll 52 are attached to the rotating plate 46 at the corners of an equilateral triangle centered on the horizontal rotating shaft 54. In other words, they are arranged at 120° intervals around the rotating shaft 54, and are arranged in an equilateral triangle when viewed from the side. The rubber roll 48, the first metal roll 50, and the second metal roll 52 are driven, and the axis of each roll is horizontal. In addition, in order to easily express the rubber roll 48, the first metal roll 50, and the second metal roll 52 in Figures 2, 3, and 5 to 7, the rubber roll 48 is labeled "G", the first metal roll 50 is labeled "1", and the second metal roll 52 is labeled "2".

The rotating plate 46 rotates in a clockwise or counterclockwise direction every 120° by the rotating plate drive unit 56, which is a rotary actuator.

A first transport roll 58 is provided on the side of the wagon 36 behind the sub-wagon 42, and a second transport roll 60 is provided on the side of the wagon 36 behind (downstream of) the first transport roll 58. The first transport roll 58 and the second transport roll 60 move together with the movement of the wagon 36.

The wagon moving section 40 moves the wagon 36 in the forward and backward directions on the main rails 38. When the wagon 36 is moved to the frontmost position, the rubber roll 48, the first metal roll 50, or the second metal roll 52 moves to the position closest to the reel at the winding position. Then, as the web W is wound around the reel and the reel diameter increases, the wagon 36 moves backward accordingly, and when the web W is fully wound around the reel, the wagon 36 moves to the rearmost position.

The pressing unit 44 presses the rubber roll 48 against the empty reel when the rubber roll 48 is in a position facing the empty reel.

A third transport roll 62 and a fourth transport roll 64 are provided on the upper part of the guide support table 34. The third transport roll 62 is a dancer roll.

The web W is brought into the guide section 3 from the outside and passes through the fourth transport roll 64, the third transport roll 62, the second transport roll 60, and the first transport roll 58 before reaching the first metal roll 50 or the second metal roll 52 in the sub-wagon 42.

The upper cutting arm 74 of the upper cutting device 72 is rotatably mounted on the guide support table 34 located above the wagon 36, centered on a rotating shaft 80. At the lower end of the tip of the upper cutting arm 74, an upper guide roll 81 that guides the web W to the reel at the removal position, and an upper pressure roll 79 that presses the web W against the reel at the winding position are provided. An upper cutter 76 is provided between the upper guide roll 81 and the upper pressure roll 79. When the upper cutter 76 cuts the web W, the upper cutter operating unit 78 rotates the upper cutting arm 74 downward from the standby position, and the upper cutter 76 cuts the web W.

The lower cutting arm 84 of the lower cutting device 82 is rotatably mounted on the guide support table 34 located below the wagon 36, centered on a rotation axis 90. At the upper end of the lower cutting arm 84, a lower guide roll 91 that guides the web W to the reel at the removal position and a lower pressure roll 89 that presses the web W against the reel at the winding position are provided. A lower cutter 86 is provided between the lower guide roll 91 and the lower pressure roll 89. When the lower cutter 86 cuts the web W, the lower cutter operating unit 88 rotates the lower cutting arm 84 downward from the standby position, and the lower cutter 86 cuts the web W.

(3) Electrical Configuration of Winding Device 1 Next, the electrical configuration of the winding device 1 will be described with reference to the block diagram of FIG.

The base 10 is provided with a control unit 4 for the winding device 1. This control unit 4 is formed by a computer, and is connected to the revolution unit 28, the first rotation unit 30, the second rotation unit 32, the wagon movement unit 40, the pressing unit 44, the rotating plate drive unit 56, the upper cutter operating unit 78, and the lower cutter operating unit 88.

The control unit 4 also stores an application for an automatic switching function. Using this application and the transport speed V of the web W, the control unit 4 moves the revolution unit 28, the first rotation unit 30, the second rotation unit 32, the rotating plate drive unit 56, the wagon moving unit 40, the pressing unit 44, the upper cutter operating unit 78, and the lower cutter operating unit 88 to perform a splicing operation to replace a full reel with an empty reel.

(4) Explanation of terms The terms used in this specification will be explained below.

"Top winding" refers to a winding method in which the first shaft 22 or the second shaft 24 in FIG. 1 is rotated counterclockwise to wind the web W from the top.

"Bottom winding" refers to a winding method in which the first shaft 22 or the second shaft 24 in FIG. 4 is rotated clockwise to wind the web W from the bottom.

"Rotation" refers to the rotation of the first axis 22 and the second axis 24.

"Revolution" refers to the rotation of the first arm 16 and the second arm 18 around the revolution axis 14.

The "revolution orbit" refers to the trajectory of the center of the first axis 22 of the first arm 16 and the center of the second axis 24 of the second arm 18.

The rotating plate drive unit 56 rotates the rotating plate 46 in 120° increments to achieve the following four patterns:

In the first pattern, during top winding, as shown in FIG. 2, the rubber roll 48 is positioned facing the empty reel (this position is called the "pressable position"), the first metal roll 50 is positioned below (this position is called the "upper joint guide position"), and the second metal roll 52 is positioned above.

In the second pattern, as shown in FIG. 3, during upper winding, the first metal roll 50 is placed near the winding shaft (this position is called the "upper direct guide position"), the second metal roll 52 is placed horizontally behind it, and the rubber roll 48 is placed above the first metal roll 50 and the second metal roll 52 (this position is called the "first standby position"). The operation of transitioning from the second pattern to the first pattern is called the "upper shaft replacement start operation", and the operation of transitioning from the first pattern to the second pattern is called the "upper shaft replacement end operation".

In the third pattern, during bottom winding, as shown in FIG. 5, the rubber roll 48 is positioned facing the empty reel (this position is called the "pressable position"), the first metal roll 50 is positioned below, and the second metal roll 52 is positioned above (this position is called the "lower indirect guide position").

In the fourth pattern, as shown in FIG. 6, during bottom winding, the second metal roll 52 is placed near the winding shaft (this position is called the "lower direct guide position"), the first metal roll 50 is placed horizontally behind it, and the rubber roll 48 is placed below the second metal roll 52 and the first metal roll 50 (this position is called the "second standby position"). The operation of transitioning from the fourth pattern to the third pattern is called the "lower shaft replacement start operation", and the operation of transitioning from the third pattern to the fourth pattern is called the "lower shaft replacement end operation".

(5) In the Case of First Winding Next, the process of replacing the winding shaft in the first winding in the winding device 1 will be described with reference to Figs. 1 to 3. Before replacing the winding shaft, the web W passes over the left peripheral surface of the fourth transport roll 64 and the right peripheral surface of the third transport roll 62, and as shown in Fig. 3, passes over the lower peripheral surface of the second transport roll 60 and the lower peripheral surface of the first transport roll 58, passes over the lower peripheral surface of the second metal roll 52 and the lower peripheral surface of the first metal roll 50, and is wound in the first winding mode around the second shaft 24 rotating in the counterclockwise direction at the winding position. At this time, the wagon 36 moves backward according to the winding diameter of the second shaft 24. The sub wagon 42 is located at the very rear of the wagon 36.

In the first step of replacing the reel, when the second shaft 24 becomes full, it revolves counterclockwise from the winding position to the removal position, and the empty first shaft 22 moves to the winding position instead. At this time, as shown in FIG. 2, the wagon moving unit 40 moves the wagon 36 to the most forward position, and the rotating plate driving unit 56 rotates the rotating plate 46 in a clockwise direction to perform the upper shaft replacement start operation, and the first metal roll 50 and the second metal roll 52 are arranged almost vertically, the first metal roll 50 is moved to the first indirect guide position, and the rubber roll 48 is opposed to the vicinity of the empty first shaft 22, which is the pressing position. The web W conveyed from the lower peripheral surface of the first conveying roll 58 passes through the lower peripheral surface of the first metal roll 50 and the lower peripheral surface of the rubber roll 48, and is wound in an upper winding on the empty first shaft 22. The second metal roll 52 rotates to a position outside the conveying path of the web W. As shown in FIG. 1, the web W that has passed through the rubber roll 48 passes through the guide roll 261 and is wound on the second shaft 24, which is fully wound.

In the second step, the pressing unit 44 moves the sub-wagon 42 to the empty first shaft 22 that is rotating counterclockwise, and moves the rubber roll 48 that is in the pressing position, pressing the web W against the surface of the first shaft 22 with the rubber roll 48.

In the third step, as shown in FIG. 1, the upper cutter operating part 78 of the upper cutting device 72 rotates the upper cutting arm 74 from the standby position, and the web W pressed against the right peripheral surface of the first shaft 22 by the rubber roll 48 is further pressed against the upper peripheral surface of the first shaft 22 by the upper pressure roll 79, and is guided to the guide roll 261 by the upper guide roll 81.

In the fourth step, as shown in FIG. 1, when the double-sided adhesive tape 68 on the surface of the first shaft 22 rotates to the pressing position of the rubber roll 48, the web W is fixed to the first shaft 22, and at this timing the web W is cut by the upper cutter 76. The starting end of the web W cut by the upper cutter 76 starts to wind around the first shaft 22, and the ending end of the cut web W is wound up on the second shaft 24, which is fully wound. In addition, the upper cutting arm 74 is returned to the standby position by the upper cutter operating unit 78.

In the fifth step, as shown in FIG. 3, when the web W starts to be wound around the first shaft 22, the pressing state of the rubber roll 48 by the pressing unit 44 is released and moved to a pressing position, and the wagon 36 is moved to a predetermined position by the wagon moving unit 40. Then, the rotating plate 46 is rotated clockwise by the rotating plate driving unit 56 to complete the upper shaft replacement operation, and the rubber roll 48 is removed from the conveying path of the web W and moved to the first waiting position, so that the web W guided from the lower peripheral surface of the first conveying roll 58 passes through the lower peripheral surface of the second metal roll 52 and the lower peripheral surface of the first metal roll 50 in the upper direct guide position, and is wound in an upper winding state around the first shaft 22. At this time, the first metal roll 50 is not in contact with the first shaft 22.

In the sixth step, as the web W is wound around the first shaft 22 and the winding diameter increases, the wagon 36 is moved backward by the wagon moving section 40. When the first shaft 22 is fully wound, the process returns to the step described in the first step above.

(6) In the Case of Underwinding Next, the process of replacing the winding shaft in the underwinding in the winding device 1 will be described with reference to Figs. 4 to 6. Before replacing the winding shaft, the web W passes over the left peripheral surface of the fourth transport roll 64 and the right peripheral surface of the third transport roll 62, and as shown in Fig. 6, passes over the upper peripheral surface of the second transport roll 60 and the lower peripheral surface of the first transport roll 58, passes over the upper peripheral surface of the first metal roll 50, and passes over the upper peripheral surface of the second metal roll 52, and is wound underwind around the second shaft 24 rotating in the clockwise direction at the winding position. At this time, the wagon 36 moves backward according to the winding diameter of the second shaft 24. The sub wagon 42 is located at the very rear of the wagon 36.

In the first step of replacing the reel, when the second shaft 24 becomes full, it revolves clockwise from the winding position to the removal position, and the empty first shaft 22 moves to the winding position instead. At this time, as shown in FIG. 5, the wagon moving unit 40 moves the wagon 36 to the most forward position, and the rotating plate driving unit 56 rotates the rotating plate 46 counterclockwise to perform the lower shaft replacement start operation, disposing the first metal roll 50 and the second metal roll 52 in a substantially vertical direction, moving the second metal roll 52 to the second indirect guide position, and facing the vicinity of the empty first shaft 22, which is the pressing position, the rubber roll 48. The web W conveyed from the lower peripheral surface of the first conveying roll 58 passes through the upper peripheral surface of the second metal roll 52 and the upper peripheral surface of the rubber roll 48, and is wound under the empty first shaft 22. The first metal roll 50 rotates to a position outside the conveying path of the web W. As shown in FIG. 4, the web W that has passed through the rubber roll 48 passes through the guide roll 262 and is wound on the second shaft 24, which is fully wound.

In the second step, the pressing unit 44 moves the sub-wagon 42 to the empty first shaft 22 that is rotating in a clockwise direction, moves the rubber roll 48 that is in a pressing position, and presses the rubber roll 48 against the surface of the first shaft 22 to press the web W.

In the third step, as shown in FIG. 4, the lower cutter operating part 88 of the lower cutting device 82 rotates the lower cutting arm 84 from the standby position, and the web W pressed against the right peripheral surface of the first shaft 22 by the rubber roll 48 is further pressed against the lower peripheral surface of the first shaft 22 by the lower pressure roll 89, and is guided to the guide roll 262 by the lower guide roll 91.

In the fourth step, as shown in FIG. 4, when the double-sided adhesive tape 68 on the surface of the first shaft 22 rotates to the pressing position of the rubber roll 48, the web W is fixed to the first shaft 22, and at this timing the web W is cut by the lower cutter 86. The starting end of the web W cut by the lower cutter 86 starts to wind around the first shaft 22, and the ending end of the cut web W is wound up on the second shaft 24, which is fully wound. In addition, the lower cutting arm 84 is returned to the standby position by the lower cutter operating unit 88.

In the fifth step, as shown in FIG. 6, when the web W starts to be wound around the first shaft 22, the pressing state of the rubber roll 48 by the pressing unit 44 is released and moved to a pressing position, and the wagon 36 is moved to a predetermined position by the wagon moving unit 40. Then, the rotating plate 46 is rotated counterclockwise by the rotating plate driving unit 56 to complete the lower shaft replacement operation, and the rubber roll 48 is removed from the conveying path of the web W and moved to the second waiting position, so that the web W guided from the lower peripheral surface of the first conveying roll 58 passes through the upper peripheral surface of the first metal roll 50 and the upper peripheral surface of the second metal roll 52 in the lower direct guide position and is wound downwardly around the first shaft 22. At this time, the second metal roll 52 is not in contact with the first shaft 22.

In the sixth step, as the web W is wound around the first shaft 22 and the winding diameter increases, the wagon 36 is moved backward by the wagon moving section 40. When the first shaft 22 is fully wound, the process described in the first step above is repeated.

(7) Effects According to this embodiment, the web W is pressed against the empty reel by the rubber roll 48, regardless of whether the web W is wound on the top or bottom, so that the web W can be pressed without being damaged.

In addition, when the reel starts to wind the web W, the rubber roll 48 moves out of the transport path of the web W, and the web W is wound around the reel via the first metal roll 50 and the second metal roll 52. This provides good speed tracking when speeding up after the reel replacement is complete.

In addition, by controlling the rotation direction of the rotating plate 46, it is possible to easily switch between the rubber roll 48, the first metal roll 50, and the second metal roll 52, whether they are top-wound or bottom-wound.

When winding up the web W, it is transported from the lower peripheral surface of the second metal roll 52 to the peripheral surface of the first metal roll 50, and when winding down the web W is transported from the upper peripheral surface of the first metal roll 50 to the upper peripheral surface of the second metal roll 52, so the web W can be transported smoothly without being damaged. At this time, the rubber roll 48 is out of the transport path of the web W, so the web W does not come into contact with the rubber roll 48.

(8) Modification Example In the above embodiment, a winding device 1 that performs both top winding and bottom winding was described. However, for a winding device 1 that performs only top winding, it is sufficient to attach only the rubber roll 48 and the first metal roll 50 to the rotating plate 46.

Conversely, when only underwinding is required, only the rubber roll 48 and the second metal roll 52 need to be attached to the rotating plate 46.

In the above embodiment, the timing of moving each device was determined by the application of the automatic reconnection function stored in the control unit 4, but the present invention is not limited to this. Detection sensors may be provided for the wagon moving unit 40, the pressing unit 44, the upper cutting device 72, the lower cutting device 82, etc., and the devices may be operated in accordance with the timing of detection by these detection sensors.

Although one embodiment of the present invention has been described above, this embodiment is presented as an example and is not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their modifications are included in the scope and essence of the invention, and are included in the scope of the invention and its equivalents described in the claims.

1: Winding device, 2: Winding section, 3: Guide section, 4: Control section, 22: First shaft, 24: Second shaft, 36: Wagon, 42: Sub-wagon, 46: Rotating plate, 48: Rubber roll, 50: First metal roll, 52: Second metal roll, 56: Rotating plate drive section

Claims (6)

Two winding shafts are disposed on an orbit around a revolution axis, and revolve between a winding position and a removal position and rotate about their axes to wind up the web in an upwind or downwind manner;
a first metal roll for guiding the web to the winding shaft at the winding position during first winding;
a rubber roll that waits at a first waiting position near the winding position during the first winding;
an upper cutting means for cutting the web conveyed from the empty reel at the winding position to the full reel at the unwinding position during upper winding;
During upper winding, a roll changing means performs: (1) an upper shaft replacement start operation for moving the first metal roll from an upper direct guide position where the web is directly guided to the winding shaft at the winding position to an upper indirect guide position where the web is indirectly guided to the winding shaft at the winding position via the rubber roll, and simultaneously moving the rubber roll from the first standby position to a pressable position where the web can be pressed against the winding shaft at the winding position; and (2) an upper shaft replacement end operation for moving the first metal roll from the upper indirect guide position to the upper direct guide position, and simultaneously moving the rubber roll from the pressable position to the first standby position.
a pressing means for pressing the rubber roll at the pressing position against the winding shaft at the winding position;
A control means;
having
the rubber roll is heavier than the first metal roll,
when the winding shaft at the winding position becomes full during first winding, the control means revolves the full winding shaft to the removal position and revolves the empty winding shaft to the winding position,
The roll changing means performs the upper shaft replacement start operation, and the web conveyed from the first metal roll at the upper indirect guide position is pressed against the empty reel at the winding position by the rubber roll at the pressing position using the pressing means;
cutting the web conveyed from the empty reel at the winding position to the full reel at the unwinding position by the upper cutting means;
when the web starts to be wound around the empty reel at the winding position after the cutting, the pressing means is used to release the rubber roll from pressing the reel;
the roll changing means performs the upper shaft replacement completion operation, the rubber roll is made to wait at the first waiting position, and the web is directly guided to the winding shaft at the winding position by the first metal roll at the upper direct guiding position;
A web winding device comprising: a second metal roll for guiding the web to the winding shaft at the winding position during the lower winding;
a bottom cutting means for cutting the web being transported from the empty reel at the winding position to the full reel at the unwinding position during bottom winding,
The rubber roll is heavier than the second metal roll,
During the lower winding, the rubber roll is made to wait at a second waiting position different from the first waiting position;
The roll changing means is
(1) a lower shaft replacement start operation is performed in which the second metal roll is moved from a lower direct guide position where the web is directly guided to the winding shaft at the winding position to a lower indirect guide position where the web is indirectly guided to the winding shaft at the winding position via the rubber roll, and at the same time, the rubber roll is moved from the second standby position to the pressable position where the web can be pressed against the winding shaft at the winding position; and (2) a lower shaft replacement end operation is performed in which the second metal roll is moved from the lower indirect guide position to the lower direct guide position, and at the same time, the rubber roll is moved from the pressable position to the second standby position.
The control means
When the winding shaft at the winding position becomes full during the lower winding, the full winding shaft is revolved to the removal position, and the empty winding shaft is revolved to the winding position;
The roll changing means performs the lower shaft replacement start operation, and the web conveyed from the second metal roll at the lower indirect guide position is pressed against the empty reel at the winding position by the rubber roll at the pressing position using the pressing means;
The web being transported from the empty reel at the winding position to the full reel at the unwinding position is cut by the lower cutting means;
when the web starts to be wound around the empty reel at the winding position after the cutting, the pressing means is used to release the rubber roll from pressing the reel;
the lower shaft replacement completion operation is performed by the roll changing means, the rubber roll is made to wait at the second waiting position, and the web is directly guided to the winding shaft at the winding position by the second metal roll at the lower direct guiding position.
2. The web winding device according to claim 1. The roll changing means is
A rotating plate;
A roll rotating means for rotating the rotating plate around a horizontal rotation axis;
having
The rubber roll, the first metal roll, and the second metal roll are arranged on the rotating plate in a triangular shape around the rotation shaft in a side view,
When the rotary plate is rotated by a first angle by the roll rotating means from a state in which the rubber roll is disposed at the pressable position and the first metal roll is disposed at the upper indirect guide position, the rubber roll rotates to the first standby position and the first metal roll rotates to the upper direct guide position,
When the rotary plate is rotated by a second angle by the roll rotating means from a state in which the rubber roll is disposed at the pressable position and the second metal roll is disposed at the lower indirect guide position, the rubber roll rotates to the second standby position and the second metal roll rotates to the lower direct guide position.
3. The web winding device according to claim 2. When the rotary plate is returned by a first angle by the roll rotating means from a state in which the rubber roll is disposed at the first standby position and the first metal roll is disposed at the upper direct guide position, the rubber roll rotates to the pressable position and the first metal roll rotates to the upper indirect guide position,
When the rotary plate is returned by a second angle by the roll rotating means from a state in which the rubber roll is disposed at the second standby position and the second metal roll is disposed at the lower direct guide position, the rubber roll rotates to the pressable position and the second metal roll rotates to the lower indirect guide position.
4. The web winding device according to claim 3. When the rubber roll is at the first standby position, the web is guided from the second metal roll to the first metal roll at the upper direct guide position,
When the rubber roll is at the second standby position, the web is guided from the first metal roll to the second metal roll at the lower direct guiding position.
5. The web winding device according to claim 4. The rubber roll, the first metal roll, and the second metal roll are arranged on the rotating plate at intervals of 120° around the rotation axis in a side view,
the first angle is 120°;
The second angle is 120°.
4. The web winding device according to claim 3.