JP2016040193A - Winding device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a web winding device that makes contact pressure of a touch roll constant, without reference to the state of winding a web.SOLUTION: A winding device includes: a winding roll 10 for winding a web W; a touch roll 20 for preventing looseness in the winding of the web W by coming into contact with an outer peripheral part of the web W wound around the winding roll 10; an air cylinder 24 for regulating contact pressure T of the touch roll 20 against the web W; and a control part 17 for making the contact pressure T from the start of the winding of the web W to the end of the winding of the web W constant by using the air cylinder 24.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a winding device for cutting a long web in the width direction.

  There is a winding device in which a coating liquid is applied to a web with a coating device, or the web is wound after being heated with a heating device (for example, see Patent Document 1).

  In order to continuously wind up the processed web, the winding device fixes the web wound on the full winding roll to the empty winding roll and also winds the full winding. The web between the roll and the empty winding roll is cut with a cutting device.

JP 2001-163487 A

  In the winding device, the touch roll is brought into contact with the outer peripheral portion of the web in order to prevent the web wound around the winding roll from loosening. However, the contact pressure of the touch roll varies depending on the winding state of the web of the winding roll and the rotation angle of the main arm supporting the winding roll. For example, when the touch roll is in contact from below the web, the touch roll may be in a non-contact state with the outer peripheral portion of the web due to the balance between the weight of the touch roll and the contact pressure. Conversely, when the touch roll is positioned above the web, the web may be damaged by its own weight or contact pressure.

  In view of the above problems, an object of the present invention is to provide a web winding device that makes the contact pressure of a touch roll constant regardless of the winding state of the web.

  In the present invention, a pair of left and right main arms protrudes from a rotation support shaft at predetermined angles, and a long web that is rotatably supported between the pair of left and right main arms and conveyed in the front-rear direction is wound. A plurality of winding rolls to be taken, and a touch for preventing looseness of the wound webs by contacting an outer peripheral portion of the web wound around one of the winding rolls. A roll, an adjusting means for adjusting the contact pressure of the touch roll with respect to the web, and a control means for controlling the contact pressure to a constant reference contact pressure from the start to the end of winding of the web using the adjustment means. Is a winding device.

  According to the present invention, the control means can control the contact pressure of the touch roll to be constant from the start to the end of winding the web using the adjusting means.

It is a front view of the winding device of one embodiment of the present invention. It is a side view of the state which stored the touch arm in the auxiliary arm. It is a side view in the state where the touch arm rotated from the auxiliary arm. It is a top view of a cutting device. It is a block diagram of a winding device. It is drawing of the 1st process of a winding apparatus. Similarly it is drawing of a 2nd process. It is drawing of a 3rd process similarly. Similarly it is drawing of the 4th process. Similarly it is drawing of the 5th process. It is drawing of a 6th process similarly. It is a graph which shows the relationship between auxiliary pressure h and rotation angle (alpha) degree of a winding roll. It is a graph which shows the relationship between angle (theta) degrees of a touch roll, and the winding diameter r of a winding roll.

  Hereinafter, the winding apparatus 1 of the web W of one Embodiment of this invention is demonstrated based on FIGS. Examples of the web W include fabric, paper, film, pet film, photo cash register, and metal foil.

(1) Structure of winding device 1 The structure of the winding device 1 will be described with reference to FIGS.

  As shown in FIG. 1, a pair of left and right support legs 3, 3 are erected from a base 2 of the winding device 1, and a rotation support shaft 4 is rotatably mounted on the pair of left and right support legs 3, 3. Has been.

  From the rotation support shaft 4, a pair of left and right main arms 5 and 5 and a pair of left and right main arms 6 and 6 protrude 180 degrees apart.

  Winding rolls 10 and 11 for winding the web W around the pair of left and right main arms 5 and 6 are rotatably supported. When the web W wound around one winding roll (hereinafter referred to as “old winding roll”) 10 is full (maximum diameter), the web W is emptied by rotating the rotary support shaft 4. The other winding roll (hereinafter referred to as “new winding roll”) 11 is rotated to a predetermined position, and the web W is continuously wound. These old and new take-up rolls 10 and 11 are each provided with a bobbin for winding the web W around the rotating shaft of the roll. Moreover, the double-sided adhesive tape 12 is attached to the surface of the new winding roll 11 in the width direction, and the web W can be fixed.

  Between the pair of left and right main arms 5 and 5 and the main arms 6 and 6, a pair of left and right auxiliary arms 7 and 7 and auxiliary arms 8 and 8 protrude from the rotation shaft 4, respectively. A guide roll 18 is rotatably attached to the distal ends of the pair of left and right auxiliary arms 7, 7, and a guide roll 19 is rotatably attached to the distal ends of the pair of left and right auxiliary arms 8, 8. The pair of left and right auxiliary arms 7 and 7 are provided with a touch roll 20, and the pair of left and right auxiliary arms 8 and 8 are provided with a touch roll 21. The touch rolls 20 and 21 will be described later.

  The rotation support shaft 4 is rotated by a motor 13 provided on one support leg 3.

  The old winding roll 10 is rotated by receiving power from a motor 14 provided on the base 2 through a chain or the like. The motor 14 is, for example, an AC servo motor.

  The new winding roll 11 is rotated by power transmitted from a motor 15 provided on the base 2 through a chain or the like. The motor 15 is also an AC servomotor, for example.

  As shown in FIG. 3, a cutting device 16 for cutting the web W is provided behind the old winding roll 10.

(2) Structure of Touch Rolls 20 and 21 Next, the structure of the touch rolls 20 and 21 will be described with reference to FIGS.

  A touch roll 20 is rotatably mounted between a pair of left and right touch arms 23 and 23. The pair of left and right touch arms 23 and 23 are rotatably provided on touch shafts 22 and 22 respectively provided on one side of the base of the pair of left and right auxiliary arms 7 and 7. The touch arm 23 extends in the distal direction of the auxiliary arm 7. A base portion of the left air cylinder 24 is rotatably attached to the left auxiliary arm 8 which is 180 ° opposite to the left auxiliary arm 7. The distal end of the expansion / contraction part 25 of the left air cylinder 24 is a base part of the left touch arm 23 and is rotatably attached to the outer side than the left touch shaft 22. Further, a left weight 26 for balancing is provided from the left touch arm 23 via the left touch shaft 22. The base of the right air cylinder 24 is rotatably attached to the right auxiliary arm 8 which is 180 ° opposite to the right auxiliary arm 7. The distal end of the expansion / contraction part 25 of the right air cylinder 24 is a base part of the right touch arm 23 and is rotatably attached to the outer side than the right touch shaft 22. Further, a right weight 26 for balancing is provided from the right touch arm 23 via the right touch shaft 22. The touch roll 20 rotates around the touch shaft 22 by the expansion / contraction part 25 of the air cylinder 24 extending and contracting, and comes into contact with the outer peripheral part of the web W wound around the old winding roll 10. The contact pressure T can be adjusted by expanding / contracting the expansion / contraction part 25 by the air pressure of the air cylinder 24.

  A touch roll 21 is rotatably mounted between a pair of left and right touch arms 28 and 28. The pair of left and right touch arms 28, 28 are rotatably provided on touch shafts 27, 27 provided on one side of the base of the pair of left and right auxiliary arms 8, 8, respectively. The touch arm 28 extends in the distal direction of the auxiliary arm 8. The base of the left air cylinder 29 is rotatably attached to the left auxiliary arm 7 which is 180 ° opposite to the left auxiliary arm 8. The distal end of the expansion / contraction part 30 of the left air cylinder 29 is a base part of the left touch arm 28 and is rotatably attached to the outer side than the left touch shaft 27. Further, a left weight 26 for balancing is provided from the left touch arm 28 via the left touch shaft 27. The base of the right air cylinder 29 is rotatably attached to the right auxiliary arm 8 which is 180 ° opposite to the right auxiliary arm 7. The distal end of the expansion / contraction part 30 of the right air cylinder 29 is a base part of the right touch arm 28 and is rotatably attached to the outside of the right touch shaft 27. Also, a right weight 34 for balancing is provided from the right touch arm 28 via the right touch shaft 27. The touch roll 21 rotates around the touch shaft 27 as the expansion / contraction part 30 of the air cylinder 29 expands / contracts, and comes into contact with the outer peripheral part of the web W wound around the new winding roll 11. The contact pressure T can be adjusted by expanding / contracting the expansion / contraction part 30 by the air pressure of the air cylinder 29.

(3) Structure of Cutting Device 16 Next, the cutting device 16 will be described with reference to FIGS.

  In the cutting device 16, a guide roll 162, a cutter moving device 163, and a pressing roll 164 are laid in order between a pair of support arms 161 and 161. The guide roll 162 and the press roll 164 are rotatably attached. A cutter 165 is attached to the cutter moving device 163 and moves along the width direction of the web W.

  The pair of support arms 161 and 161 can rotate about the rotation shaft 166, and the pair of support arms 161 and 161 move toward and away from the web W by rotating about the rotation shaft 166.

(4) Electrical configuration of winding device 1 Next, the electrical configuration of the winding device 1 will be described based on the block diagram of FIG.

  As shown in FIG. 5, a motor 14 of the old winding roll 10, a motor 15 of the new winding roll 11, a motor 13 of the rotation support shaft 4, and a cutting device 16 are connected to the control unit 17 formed of a microcomputer. Yes.

  The control unit 17 is connected to an angle detection device 7 that detects the rotation angle of the main arm 5, and is connected to regulators 31 and 32 that adjust the air pressure of the air cylinder 24 and the air cylinder 29.

(5) Correction Method of Contact Pressure T There are the following two types of methods by which the control unit 17 corrects the contact pressure T. Before describing these correction methods, first, the definition of the angle in this specification will be described with reference to FIG.

  In FIG. 2, the position of the new winding roll 11 around the rotation support shaft 4 is 0 °, the position of the guide roll 18 is 90 °, the position of the old winding roll 10 is 180 °, and the position of the guide roll 19 is The angle is set to 270 °. The rotation angle of the old winding roll 10 is α °, and the rotation angle of the touch roll 20 is θ °. The rotation angle α ° is obtained from the rotation angle of the main arm 5 detected by the control unit 17 using the angle detection device 7. For example, when the rotation angle of the main arm 5 is 0 °, the rotation angle α ° of the main arm 6 having the old winding roll 10 is 180 °.

  First, the first correction method will be described. In FIG. 2, when the main arm 5 rotates clockwise around the rotation support shaft 4, the contact position of the touch roll 20 changes from below to above as shown in FIGS. 6 to 11. In FIG. 6, the touch roll 20 that has been in contact with the web W from below changes in contact position with the rotation of the main arm 5, and in FIG. Therefore, the control unit 17 needs to prevent the contact pressure T from changing even if the touch roll 20 is positioned below or above the web W.

As shown in FIG. 12, when the touch roll 20 is located below the web W, the control unit 17 corrects the correction pressure h corresponding to the rotation angle α ° of the old winding roll 10 (main arm 6). Is corrected to a reference contact pressure T0 in addition to the reference pressure T0, and when it is positioned above, the correction pressure h corresponding to the angle θ ° of the touch roll 20 of the old winding roll 10 (main arm 6) is the reference pressure. It is subtracted from T0 and corrected to the reference contact pressure T0. The auxiliary pressure h is obtained in advance by experiments corresponding to the rotation angle α ° of the old winding roll 10 (main arm 6), and is stored in the storage unit 35. Further, the reference contact pressure T0 is set to a slight pressure (for example, 0.005 kg / cm ² ), and the auxiliary pressure h is set to the reference contact pressure T0 as the angle θ ° decreases so that the reference contact pressure T0 can be maintained. Add.

  Next, the second correction method will be described. When the old winding roll 10 winds the web W as shown in FIG. 3, the winding diameter r increases, and the angle θ ° of the touch roll 20 that is in contact with the lower side of the web W gradually decreases. As the angle θ ° decreases, the contact pressure T gradually decreases. Therefore, the control unit 17 controls the contact pressure T of the touch roll 20 to increase to the reference contact pressure T0 as the winding diameter r of the old winding roll 10 increases. Specifically, the increase dimension of the winding diameter r can be calculated from the conveyance speed V of the web W, the winding time, and the thickness of the web W. On the other hand, as shown in FIG. 12, the angle θ ° can be calculated from the winding diameter r and the distance between the touch roll 20 and the rotation support shaft 4. The controller 17 can calculate the auxiliary pressure h by making the calculated angle θ ° correspond to the rotation angle α °. Further, the control unit 17 adds a larger auxiliary pressure h to the contact pressure T as the winding diameter r increases and the angle θ ° decreases so that the reference contact pressure T0 can be maintained.

(6) Process of Operation of Winding Device 1 Hereinafter, a process of operation of the winding device 1 for the web W will be described with reference to FIGS. 3 and 11 to 16. In the initial state, as shown in FIG. 2, the touch rolls 20 and 21 are in the stored state.

(6-1) First Step As shown in FIG. 6, in the first step, the control unit 17 moves the old winding roll 10 attached to the main arm 5 at the rotation angle α ° = 180 ° to the motor 14. Rotate with. The old take-up roll 10 takes up the web W, which has been subjected to processing such as coating and heating by an external device, through the guide roll 18. A new winding roll 11 is attached to the main arm 6 at an angle = 0 °.

  In the first step, as shown in FIGS. 3 and 6, the touch roll 20 is positioned so as to be in contact with the lower side of the web W wound around the old winding roll 10. At this time, the control unit 17 calls the auxiliary pressure h at the position of the rotation angle α ° (for example, θ ° = 150 °) of the main arm 5 from the storage unit 35 and adds it to the reference contact pressure T0 to contact the touch roll 20. I am letting. On the other hand, since the web W is not wound around the new winding roll 11, the touch roll 21 is fixed at a standby position that is a position slightly rotated from the auxiliary arm 8.

(6-2) Second Step As shown in FIG. 7, in the second step, when the web W wound around the old winding roll 10 becomes full, the control unit 17 rotates the rotation support shaft 4. , The main arms 5 and 6 are rotated in the clockwise direction, and the positions of the old winding roll 10 and the new winding roll 11 are rotated to 180 ° opposite positions.

  In this second step, the old take-up roll 10 starts to rotate clockwise (in FIG. 7, it rotates to a rotation angle α ° = 250 °). In this case, the control unit 17 adjusts the expansion / contraction state of the expansion / contraction part 25 of the air cylinder 24 so that the contact pressure T of the touch roll 20 becomes the reference contact pressure T0. The control unit 17 calls the correction pressure h to be adjusted from the storage unit 35. The touch roll 21 with respect to the new winding roll 11 rotates together with the auxiliary arm 8, but remains fixed at the standby position as in the first step.

(6-3) Third Step As shown in FIG. 8, in the third step, the old winding roll 10 continues to rotate clockwise (in FIG. 8, the rotation angle α ° = 300 °). ing).

  In the third step, the control unit 17 continues to adjust the expansion / contraction state of the expansion / contraction part 25 of the air cylinder 24 so that the contact pressure T of the touch roll 20 becomes the reference contact pressure T0. The touch roll 21 with respect to the new winding roll 11 rotates together with the auxiliary arm 8, but remains fixed at the standby position as in the first step.

(6-4) Fourth Step As shown in FIG. 9, in the fourth step, the control unit 17 focuses the cutting device 16 on the web W wound around the old winding roll 10 and the rotation shaft 166. Rotate to get closer.

  In the fourth step, the control unit 17 adjusts the contact pressure T of the touch roll 20 to the reference contact pressure T0 according to the rotation angle α ° of the old winding roll 10 as in the third step. Is fixed at the standby position.

(6-5) Fifth Step As shown in FIG. 10, in the fifth step, the control unit 17 fixes the old winding roll 10 at the rotation angle α ° = 0 °, and the rotation angle is 180 °. Then, the new winding roll 11 is fixed. Further, the control unit 17 presses the web W against the double-sided adhesive tape 12 on the surface of the new winding roll 11 which has started rotating by the guide roll 162 and the pressing roll 164, and fixes the web W to the new winding roll 11. Thereafter, the web W extending to the old winding roll 10 is cut by the cutter 218.

  In the fifth step, the contact pressure T is controlled to the reference contact pressure T0 with the auxiliary pressure h corresponding to the rotation angle of 0 °. Further, the control unit 17 rotates the touch arm 28 and moves the touch roll 21 by the air cylinder 29 to the vicinity of the new winding roll 11.

(6-6) Sixth Step As shown in FIG. 11, in the sixth step, after cutting the web W, the control unit 17 continues to wind the web W with the rotating new winding roll 11.

  In the sixth step, since the winding of the web W by the old winding roll 10 is completed, the control unit 17 rotates the touch arm 23 with the air cylinder 24 and moves the touch roll 20 to the standby position. Further, the control unit 17 moves the touch roll 21 with the touch arm 28 and brings it into contact with the outer peripheral portion of the web W that has started to be wound around the new winding roll 11. In this case, the contact pressure T is obtained based on the rotation angle α ° = 180 ° of the main arm 6 to which the new winding roll 11 is attached.

(7) Effect According to the present embodiment, when the touch roll 20 is in contact with the web W from below, the contact pressure T is set to the reference contact pressure so as to cancel the downward force due to the weight of the touch roll 20. When the touch roll 20 is in contact with the web W from above, it is corrected by the auxiliary pressure h so that the weight of the touch roll 20 is reduced so that the reference contact pressure T0 is obtained. . As a result, the contact pressure T of the touch roll 20 is always constant regardless of the angle at which the main arm 5 rotates. Absent. The reference contact pressure T is, for example, about 0.005 kg / cm ^2. At such a fine pressure, the touch rolls 20 and 21 may be brought into a non-contact state due to the weight and the center of gravity change. In the embodiment, such a state does not occur.

  In addition, since the contact can always be maintained with a small pressure, meandering and the like can be suppressed as much as possible even with the web W that dislikes a strong contact pressure.

  Further, when the laminated web W is wound up, the state of the laminated coating liquid is not changed by the touch rolls 20 and 21 in contact with each other, and the web W is not damaged.

(8) Modification Example In the above-described embodiment, the winding device 1 having two main arms and two auxiliary arms has been described. However, the present invention is not limited thereto, and the winding device having three or more main arms and auxiliary arms is used. It may be applied.

  Moreover, in the said embodiment, although the air cylinder was used as an adjustment means of the contact pressure T, you may rotate a touch arm not only with this but with a motor.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

DESCRIPTION OF SYMBOLS 1 ... Winding device, 4 ... Rotation support shaft, 5 ... Main arm, 6 ... Main arm, 7 ... Auxiliary arm, 8 ... Auxiliary arm, 10 ... Old winding Take-up roll, 11 ... New winding roll, 17 ... Control unit, 20 ... Touch roll, 21 ... Touch roll, 22 ... Touch axis, 23 ... Touch arm, 24 ... -Air cylinder, 25 ... telescopic part, 26 ... weight, 33 ... angle detection device

Claims (9)

A plurality of left and right main arms project at predetermined angles on the rotation support shaft,
A plurality of winding rolls for winding a long web that is rotatably supported between the pair of left and right main arms and conveyed in the front-rear direction;
A touch roll that contacts the outer periphery of the web wound around one of the plurality of winding rolls and prevents loosening of the wound web;
Adjusting means for adjusting the contact pressure of the touch roll to the web;
Control means for controlling the contact pressure to a constant reference contact pressure from the start to the end of winding of the web using the adjusting means;
Winding device having A pair of left and right auxiliary arms protruding from the rotation support shaft between the adjacent main arms;
A guide roll rotatably supported between a pair of left and right auxiliary arms;
A pair of left and right touch arms each mounted rotatably about a touch axis provided on the pair of left and right auxiliary arms;
Have
The touch roll is rotatably supported between a pair of left and right touch arms,
The adjusting means rotates the touch arm around the touch axis;
The winding device according to claim 1. The control means applies a correction pressure when the touch roll contacts from below the web to correct the reference contact pressure, and subtracts the correction pressure when the touch roll contacts from above the web. To correct the reference contact pressure,
The winding device according to claim 2. The control means obtains a change in the angle of the touch roll corresponding to a rotation angle of the main arm that rotates about the rotation support shaft, and obtains the correction pressure based on the changing angle of the touch roll. ,
The winding device according to claim 3. The control means obtains an angle of the touch roll that changes in response to an increase in a winding diameter of the take-up roll that is winding the web at a fixed position, and the control means corresponds to the angle at which the touch roll changes. Find the correction pressure,
The winding device according to claim 3. The control means is configured to change the touch roll according to an increase in a winding diameter of the winding roll winding the web and a rotation angle of the main arm rotating around the rotation support shaft. And determining the correction pressure corresponding to the changing angle of the touch roll.
The winding device according to claim 3. The control means prestores the correction pressure corresponding to the rotation angle of the main arm rotating around the rotation support shaft in a storage unit.
The winding device according to claim 4. The control means obtains an increase in the winding diameter of the winding roll from the web conveyance speed and winding time,
The winding device according to claim 6. The adjusting means is an air cylinder;
The winding device according to claim 1.

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