JP2018184292A - Web winding device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a web winding device capable of uniformly winding a web around a winding shaft.SOLUTION: This device comprises: a touch roll 46 rotating while contacting a web W wound around a winding shaft 1; a pair of left and right touch support arms 42 and 44 for rotatably supporting the touch roll 46 from both sides; a pair of left and right air cylinders 52 and 54 which move a pair of the left and right touch support arms 42 and 44, respectively, to press the touch roll 46 against the web W; a pair of left and right sensors 56 and 58 which are provided to a pair of the left and right touch support arms 42 and 44, respectively, to detect pressing force of the touch roll 46 against the web W; and a control part 5 for controlling a pair of the left and right air cylinders 52 and 54 so that the left and right pressing forces detected by a pair of the left and right sensors 56 and 58 become equal.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a web winding device.

  Conventionally, what applied the coating liquid to the elongate web, and then dried and finished the process is wound around the winding shaft by a winding device.

Japanese Patent No. 539397

  When the web is wound around the winding shaft as described above, the winding is not performed uniformly, and there is a problem that the web may be wound around the winding shaft in a bamboo shoot shape.

  In view of the above problems, an object of the present invention is to provide a web winding device that can uniformly wind a web around a winding shaft.

  The present invention includes a winding shaft for winding a web, a touch roll that rotates while contacting the web wound on the winding shaft, and a pair of left and right touch support arms that rotatably support the touch roll from both sides. A pair of left and right pressing means for moving the pair of left and right touch support arms to press the touch roll against the web, and a pair of left and right touch support arms, respectively, and the touch roll on the web. A web winding apparatus comprising: a detection unit that detects a pressing force; and a control unit that controls the pair of left and right pressing units so that the left and right pressing forces detected by the pair of left and right detection units are the same. is there.

  According to the present invention, since the left and right pressing forces of the touch roll are the same, the web touched by the touch roll is neatly wound around the winding shaft.

It is explanatory drawing of the winding apparatus of this embodiment. It is a partially cutaway plan view of the first winding shaft and the first touch roll. It is a state when the first touch roll is pressed against the first winding shaft and the winding diameter of the web is minimum. FIG. 4 is a diagram when the first touch roll is pressed against the first winding shaft and the web winding diameter is larger than the winding diameter of FIG. 3. FIG. 5 is a diagram when the first touch roll is pressed against the first winding shaft and the web winding diameter is larger than the winding diameter of FIG. 4. It is a state when the first touch roll is pressed against the first winding shaft and the web winding diameter becomes maximum. It is a block diagram of a winding device. It is a graph which shows the relationship between the pressing force of a 1st touch roll, and the winding diameter of a web.

  Hereinafter, a web W winding device 10 according to an embodiment of the present invention will be described with reference to FIGS. Examples of the web W include a long film, a metal stay, paper, and fabric. The winding device 10 according to this embodiment includes a winding unit 3 that winds a web W around winding shafts 1 and 2, and a guide unit 4 that guides the web W to the winding unit 3.

(1) Configuration of Winding Unit 3 The configuration of the winding unit 3 of the winding device 10 will be described with reference to FIGS. As shown in FIG. 1, a pair of left and right support legs 14 are erected from a base 12 placed on a horizontal floor. A main rotating shaft 16 is bridged horizontally and freely on the upper portions of the pair of left and right support legs 14 and 14.

  A pair of left and right first main support arms 18 and 18 protrude from the main rotation shaft 16. The second main support arms 20, 20 protrude from the main rotating shaft 16 at positions 180 ° away from the first main support arms 18, 18.

  In the main rotating shaft 16, a pair of left and right first auxiliary arms 22, 22 protrude from a position 90 ° apart between the first main support arm 18 and the second main support arm 20. A pair of left and right second auxiliary arms 24, 24 protrude from a position 90 ° apart between the second main support arms 20, 20 and the first main support arms 18, 18.

  As shown in FIG. 2, a pair of left and right first chucks 26, 26 are provided at the tips of the pair of left and right first main support arms 18, 18. The first winding shaft 1 is detachably attached between the pair of left and right first chucks 26 and 26. The first winding shaft 1 rotates together with the first chucks 26 and 26.

  As shown in FIG. 2, a pair of left and right second chucks 28 and 28 are provided at the tips of the pair of left and right second main support arms 20 and 20, respectively. Between the pair of left and right second chucks 28, 28, the second winding shaft 2 is detachably attached. The second winding shaft 2 rotates together with the second chucks 28 and 28.

  A first auxiliary roll 30 is rotatably spanned between the distal ends of the pair of left and right first auxiliary arms 22 and 22.

  A second auxiliary roll 32 is rotatably spanned between the distal ends of the pair of left and right second auxiliary arms 24, 24.

  The base 12 is provided with a revolving motor 34 that rotates the main rotating shaft 16. Here, “revolution” means that the main rotation shaft 16 is rotated by the revolution motor 34, and the first main support arm 18, the second main support arm 20, the first auxiliary arm 22, and the second auxiliary arm 24 are moved as shown in FIG. Means to rotate in the counterclockwise direction.

  The base 12 is provided with a first rotation motor 36 that rotates the first chuck 26. A second rotation motor 38 that rotates the second chuck 28 is also provided. Here, “spinning” refers to winding the web W by rotating the first winding shaft 1 or the second winding shaft 2.

  The control unit 5 of the winding device 10 made up of a computer is provided on the base 12.

(2) First touch roll 46 and second touch roll 66
Next, the first touch roll 46 and the second touch roll 66 will be described.

  In the vicinity of the main rotating shaft 16, a first arm rotating shaft 40 is provided in the horizontal direction. The first arm rotation shaft 40 is rotatably fixed at a position eccentric from the main rotation shaft 16.

  A pair of left and right first left touch support arms 42 and first right touch support arms 44 are provided from the left and right sides of the first arm rotation shaft 40.

  As shown in FIG. 2, a first touch roll 46 is rotatably provided at one end of each of the pair of left and right first left touch support arms 42 and first right touch support arms 44 as shown in FIG. It has been. The rotation axis of the first touch roll 46 is parallel to the first winding shaft 1.

  As shown in FIG. 1, first weights 48 and 48 are provided at the other ends of the pair of left and right first left touch support arms 42 and first right touch support arms 44. In the first left touch support arm 42 and the first right touch support arm 44, the distance between the first touch roll 46 and the first arm rotation shaft 40 and the ratio of the first weight 48 and the first arm rotation shaft 40 are, for example, 8 pairs. 2 or 9 to 1. However, this ratio is determined by the weight of the first touch roll 46 and the first weight 48.

  In the first left touch support arm 42, a first eccentric protrusion 50 protrudes from the vicinity of the first arm rotation shaft 40. Similarly, the first eccentric protrusion 50 protrudes from the first right touch support arm 44. A first left air cylinder 52 is attached between the tip of the left first auxiliary arm 22 and the first eccentric protrusion 50 of the first left touch support arm 42. A first right air cylinder 54 is attached between the tip of the right first auxiliary arm 22 and the first eccentric protrusion 50 of the first right touch support arm 44. As the first left air cylinder 52 and the first right air cylinder 54 extend and contract, the pair of left and right first left touch support arms 42 and the first right touch support arm 44 rotate about the first arm rotation shaft 40. Then, the first touch roll 46 is pressed against the first winding shaft 1 as will be described later.

  A first left sensor 56 made up of a pressure sensor is provided in the vicinity of one tip of the first left touch support arm 42. The first left sensor 56 can detect the pressure applied to the left web W of the first touch roll 46.

  A first right sensor 58 including a pressure sensor is provided in the vicinity of one end of the first right touch support arm 44. The first right sensor 58 can detect the pressure on the right web W of the first touch roll 46.

  A second arm rotation shaft 60 is provided in the vicinity of the main rotation shaft 16 and at a position 180 degrees away from the first arm rotation shaft 40. The second arm rotation shaft 60 is parallel to the second winding shaft 2 and is rotatably fixed to an eccentric position with respect to the second main support arm 20.

  A pair of left and right second left touch support arms 62 and a second right touch support arm 64 are provided on the left and right sides of the second arm rotation shaft 60.

  As shown in FIG. 2, a second touch roll 66 is rotatably provided at one end of the pair of left and right second left touch support arms 62 and second right touch support arms 64 via bearings 65 and 65, respectively. It has been. The rotation axis of the second touch roll 66 is parallel to the second winding axis 2.

  As shown in FIG. 1, second weights 68 and 68 are provided at the other ends of the pair of left and right second left touch support arms 62 and second right touch support arms 64. In the second left touch support arm 62 and the second right touch support arm 64, the distance between the second touch roll 66 and the second arm rotation shaft 60 and the ratio between the second weight 68 and the second arm rotation shaft 60 are, for example, 8 pairs. 2 or 9 to 1. However, this ratio is determined by the weight of the second touch roll 66 and the second weight 68.

  In the second left touch support arm 62, the second eccentric protrusion 70 protrudes from the vicinity of the second arm rotation shaft 60. Similarly, the second eccentric protrusion 70 protrudes from the second right touch support arm 64. A second left air cylinder 72 is attached between the tip of the left second auxiliary arm 22 and the second eccentric protrusion 70 of the second left touch support arm 62. A second right air cylinder 74 is attached between the tip of the right second auxiliary arm 22 and the second eccentric protrusion 70 of the second right touch support arm 64. When the second left air cylinder 72 and the second right air cylinder 74 extend and contract, the pair of left and right second left touch support arms 62 and the second right touch support arm 64 rotate about the second arm rotation shaft 60. Then, the second touch roll 66 is pressed against the second winding shaft 1 as will be described later.

  In the vicinity of one tip of the second left touch support arm 62, a second left sensor 76 made of a pressure sensor is provided. The pressure on the web W on the left side of the second touch roll 66 can be detected by the second left sensor 76.

  In the vicinity of one end of the second right touch support arm 64, a second right sensor 78 made of a pressure sensor is provided. The second right sensor 78 can detect the pressure on the right web W of the second touch roll 66.

(3) Configuration of Guide Unit 4 Next, the configuration of the guide unit 4 will be described with reference to FIG. The guide unit 4 is provided on the upper surface of the base 12 and next to the winding unit 3.

  A frame 100 is erected from the base 12. The frame 100 is provided with a moving device 102 that is movable in the horizontal direction.

  In the moving device 102, a winding roll 116 is rotatably provided at the tip of the main body 114. The winding roll 116 is a roll for winding the web W guided from the guide rolls 104, 106, 108 around the first winding shaft 1 or the second winding shaft 2. The main body 114 is moved horizontally on the rail 120 by the moving motor 118. The reason for moving the main body 114 together with the winding roll 116 is to retract the winding roll 116 by an amount corresponding to the increased winding diameter because the winding diameter increases as the web W is wound. . In addition, guide rolls 104, 106, and 108 are rotatably provided on the winding roll 116 of the moving device 102 to guide the web W from the outside.

  An upper cutter device 110 is provided above the moving device 102, and a lower cutter device 112 is provided below the moving device 102.

  The upper cutter device 110 is rotatable about a rotation shaft 124, and an upper cutter 126 is provided at the tip thereof. As shown in FIG. 2, the upper cutter device 110 is rotatable by an upper cutter driving unit 128 made of an air cylinder and cuts the web W in the width direction.

  The lower cutter device 112 is also rotatable around a rotation shaft 130, and a lower cutter 132 is provided at the tip thereof. The lower cutter device 112 is also rotatable by a lower cutter driving device 134 made of an air cylinder as shown in FIG. 2, and cuts the web W in the width direction.

(4) Electrical Configuration of Winding Device 10 Next, the electrical configuration of the winding device 10 will be described with reference to FIG. The control unit 5 of the winding device 10 includes a central processing unit, an input device such as a keyboard and a mouse, and an output device such as a display and a speaker.

  As shown in the block diagram of FIG. 7, the revolution motor 34, the first rotation motor 36, the second rotation motor 38, the moving motor 118, the upper cutter driving unit 128, and the lower cutter driving device 134 are connected to the control unit 5. ing.

  A first left air cylinder 52 is connected to the controller 5 via a first left electropneumatic converter 53, and a first right air cylinder 54 is connected via a first right electropneumatic converter 55. Yes. A first left sensor 56 and a first right sensor 58 are connected to the control unit 5.

  A second left air cylinder 72 is connected to the control unit 5 via a second left electropneumatic converter 73, and a second right air cylinder 74 is connected via a second right electropneumatic converter 75. Yes. A second left sensor 76 and a second right sensor 78 are connected to the control unit 5.

(5) Operating State of Winding Device 10 The operating state of the winding device 10 will be described with reference to FIGS. 1 and 3 to 8.

  In the initial state, as shown in FIG. 1, the first winding shaft 1 is bridged between a pair of left and right first main support arms 18, and the first main support arm 18 is in a horizontal state. The shaft 1 is located in the vicinity of the winding roll 116. Hereinafter, this position is referred to as a “winding position”. On the other hand, an empty second winding shaft 2 is attached between a pair of left and right second main support arms 20, 20 in a horizontal state. Hereinafter, this position is referred to as “attachment position”. The control unit 5 sequentially performs the following steps in accordance with the traveling speed at which the web W is wound around the first winding shaft 1 by the first rotation motor 36.

  In the first step, the control unit 5 rotates the first winding shaft 1 in the counterclockwise direction at the winding position (see FIG. 1). The web W passes through the lower peripheral surface of the winding roll 116 through the guide rolls 104, 106, and 108, and is wound around the first winding shaft 1 that is rotating in an upper volume. In this state, as shown in FIG. 3, the first touch roll 46 uniformly presses the web W in the width direction from the lower peripheral surface of the web W wound around the first winding shaft 1. The controller 5 controls the first left air cylinder 52 and the first right air cylinder 54 so that the left pressing force detected by the first left sensor 56 and the right pressing force detected by the first right sensor 58 are equal. Control. As a result, the winding of the web W does not vary.

  In the second step, as shown in FIGS. 4 to 5, when the winding diameter of the web W wound around the first winding shaft 1 increases, the control unit 5 moves the moving device 102 as shown by the dotted line in FIG. 1. The main body 114 is moved by the moving motor 118, and the winding roll 116 is retracted in accordance with the increased winding diameter. Further, as shown in FIGS. 4 to 5, the control unit 5 also rotates the first left touch support arm 42 with the winding diameter for the first touch roll 46 that is in contact with the web W whose winding diameter is increased. I will move it. At this time, the control unit 5 detects the left pressing force and the right pressing force by the first left sensor 56 and the first right sensor 58 so that the first touch roll 46 is in contact with the web W evenly on the left and right. The first left air cylinder 52 and the first right air cylinder 54 are controlled.

  In the third step, as shown in FIGS. 3 to 6, the control unit 5 decreases the pressing force of the first touch roll 46 as shown in FIG. 8 as the winding diameter of the web W increases. The reason why the pressing force of the first touch roll 46 is reduced as the winding diameter of the web W is increased is that the winding force of the web W from the outer periphery to the web W near the center increases as the winding diameter increases, and is closer to the center portion. This is because wrinkles are generated on the web W, and the winding force of the web W near the outer periphery is weakened so that wrinkles are not generated. FIG. 8 is a graph showing the relationship between the pressing force and the winding diameter. The vertical axis shows the pressing force, the horizontal axis shows the winding diameter, the point A shows the state of FIG. 3, and the point B shows FIG. The point C shows the state of FIG. 5, and the point D shows the state of FIG. The vertical axis indicates the pressing force when the first touch roll 46 touches the empty first winding shaft 1 from directly below, and the lower the number, the smaller the pressing force, and the horizontal axis indicates the winding diameter. (Diameter).

  In the fourth step, when the web W is almost fully wound on the first winding shaft 1 as shown in FIG. 6, the control unit 5 controls the first main support arm 18, the second main support arm 20, and the first auxiliary. The arm 22 and the second auxiliary arm 24 are revolved in the counterclockwise direction around the main rotation shaft 16, and the first winding shaft 1 is revolved from the winding position to the removal position (see FIG. 1). At this time, the first touch roll 46 revolves while being in contact with the web W.

  In the fifth step, when the first main support arm 18 revolves from the winding position to the removal position, the web W passes through the winding roll 116 and the second auxiliary roll 32 as shown in the dotted line in FIG. The shaft 1 is in an upper winding state. Therefore, when the fully wound state is reached, the control unit 5 drives the upper cutter device 110 by the upper cutter driving unit 128 to cut the web W in the width direction. In this state, since the empty second winding shaft 2 is in the winding position, the web W can be continuously wound after cutting. Also on the second winding shaft 2, the web W can be wound similarly to the first winding shaft 1.

(6) Effect According to the present embodiment, the first touch roll 46 can be uniformly pressed in the width direction of the web W by the first left air cylinder 52 and the first right air cylinder 54, so that the web is applied to the first winding shaft 1. When W is wound, it does not turn into a bamboo shoot.

  Further, since the pressing force of the first touch roll 46 is reduced as the winding diameter of the web W is increased, the first touch roll 46 is not marked on the surface of the web W.

(7) Modified Example In the above embodiment, the upper winding state has been described for the first winding shaft 1 or the second winding shaft 2, but instead, the first winding shaft 1 or the second winding shaft 2 may be in the lower winding state. At this time, the web W may be cut by the lower cutter device 112.

  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, 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.

W ... web, 1 ... first winding axis, 2 ... second winding axis, 3 ... winding part, 4 ... guide part, 5 ... control part, 10 ... Winding device, 12 ... base, 14 ... support leg, 16 ... main rotating shaft, 18 ... first main support arm, 20 ... second main support arm, 34 ... Revolving motor, 36... 1st rotating motor, 38... 2nd rotating motor, 40... 1st arm rotation shaft, 42. Support arm, 46 ... first touch roll, 52 ... first left air cylinder, 54 ... first right air cylinder, 56 ... first left sensor, 58 ... first right sensor, 60 ... 2nd arm rotation axis, 62 ... 2nd left touch support arm, 64 ... 2nd right touch support arm, 66 ... 2nd touch roll, 72 ... 2nd left air cylinder 74 ... second right air cylinder, 76 ... second left sensor, 78 ... second right sensor

Claims (10)

A winding shaft for winding the web;
A touch roll that rotates while contacting the web wound around the winding shaft;
A pair of left and right touch support arms for rotatably supporting the touch roll from both sides;
A pair of left and right pressing means for moving the pair of left and right touch support arms respectively to press the touch roll against the web;
Detection means provided on each of the pair of left and right touch support arms, for detecting the pressing force of the touch roll on the web;
A control unit that controls the pair of left and right pressing means so that the left and right pressing forces detected by the pair of left and right detection means are the same;
A web winding device. The pair of left and right pressing means press the touch roll uniformly in the width direction to the web wound around the winding shaft.
The web winding device according to claim 1. The pressing means is an air cylinder.
The web winding device according to claim 1. The detection means is a pressure sensor;
The web winding device according to claim 1. The touch support arm rotates about an arm rotation axis;
The touch roll is provided at one end,
A weight is provided at the other end,
The web winding device according to claim 1. The controller is
Controlling the pair of left and right pressing means so that the pressing force on the left and right decreases as the winding diameter of the web increases.
The web winding device according to claim 1. The base,
A pair of left and right support legs erected on the base;
A main rotating shaft that is horizontally and revolved around the pair of left and right support legs;
Revolving means for revolving the main rotating shaft;
A pair of left and right first main support arms protruding from the main rotation shaft;
A first chuck that is rotatably attached to the pair of left and right first main support arms;
First rotation means for rotating the first chuck;
A pair of left and right second main support arms protruding from the main rotation shaft and spaced apart from the first main support arm by 180 °;
A second chuck that is rotatably attached to the pair of left and right second main support arms,
A second rotation means for rotating the second chuck;
Have
The winding shaft is spanned between a pair of left and right first chucks and a pair of left and right second chucks,
The web winding device according to claim 1. The touch rotation axis, the pair of left and right touch support arms, the pair of left and right pressing means, and the pair of left and right detection means are centered on the main rotation axis together with the revolution of the first main support arm and the second main support arm. Revolve,
The web winding device according to claim 7. A winding roll for contacting the web wound around the winding shaft and winding the web around the winding shaft;
A guide roll for guiding the web to the winding roll;
The web winding device according to claim 1, comprising: Moving means for moving the winding roll as the web wound around the winding shaft increases;
The web winding device according to claim 1.

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