JP4936531B2 - Biaxial winding device - Google Patents

Description

  The present invention relates to a biaxial winding device that winds a flexible sheet around a winding shaft.

  FIG. 5 shows a winder 101 having a conventional winding device 100. The winder 101 passes a belt-like sheet S continuously fed from between a plurality of feeding rollers 102 under the touch roller Tr indicated by an imaginary line, and rotates clockwise in the drawing by a motor or the like. By winding the sheet S on the winding shaft o, a roll is formed around the winding shaft o. The sheet S is wound around the winding shaft o until the diameter of the roll reaches the size indicated by the outer diameter line R ′.

  The winding device 100 is composed of elements indicated by reference numerals of the 110th series, and is supported by the tip of a swing arm 104 that pivots up and down by a hydraulic cylinder 103. In the process of winding the sheet S around the winding shaft o, the hydraulic cylinder 103 is lowered to the position indicated by the phantom line 105 of the swing arm 104. Be rejected. Similarly, the touch roller Tr and the pressing roller Pr are retracted to the outside of the outer diameter line R ′ based on the operation of the air cylinder not shown in the drawing in the above-described process.

  The turret 106 of the winder 101 rotates 180 ° about the support shaft 107 when the roll diameter reaches the outer diameter line R ′. As a result, the sheet S is pulled by the roll R. At the same time as the touch roller Tr moves to the position indicated by the solid line, the pressing roller Pr approaches the take-up shaft o, so that the sheet is placed between the pressing roller Pr and the idler 108 as indicated by the reference symbol S ′. get nervous. In this state, the middle of the sheet is cut by a rotary cutter not shown in the figure, and a new starting edge e is formed as shown in FIG. The pressing roller Pr moves to the position of the imaginary line, and the starting end e is pressed against the winding shaft o by the pressing roller Pr.

On the other hand, the hydraulic cylinder 103 raises the winding device 100 together with the swing arm 104, so that the leading end of the sheet S is placed between the endless belt 110 and the winding shaft o of the winding device 100 as shown in FIG. e can enter. At this time, a portion of the endless belt 110 between the guide roller 111 and the tension roller 112 is pressed against the winding shaft o and is bent and deformed along the peripheral surface of the winding shaft o. Further, the endless belt 110 travels at a speed synchronized with the rotation of the winding shaft o in accordance with a drive roller 113 that rotates counterclockwise in the drawing by a motor or the like. For this reason, the starting end e of the sheet S is guided in the direction approaching the touch roller Tr along the peripheral surface of the winding shaft o while being sandwiched between the endless belt 110 and the winding shaft o. Further, a guide plate 114 provided in the vicinity of the guide roller 111 guides the starting end e of the sheet S upward, and rotates the sheet S around the take-up shaft o. At this point, the winder 101 can resume the process of winding the sheet S on the winding shaft o.
JP-A-6-298414 Japanese Patent Laid-Open No. 11-246089 JP 2000-318890 A

  The roll R shown in FIG. 5 is removed from the turret 106 together with the winding shaft o and conveyed to another place. Thereafter, a winding shaft having a different specification from the winding shaft o may be attached to the turret 106. For example, when a sheet is wound around a winding shaft having a diameter that is twice as large as that of the winding shaft o, when the endless belt 110 is pressed against such a winding shaft, the endless belt 110 is pressed. Exceeds the limit of bending deformation, or the tension of the endless belt 110 cannot be properly maintained by the tension roller 112. Further, since the shape of the guide plate 114 does not follow the peripheral surface of the winding shaft having a large diameter, the guide plate 114 cannot guide the sheet S.

  Accordingly, an object of the present invention is to provide a biaxial winding device that can satisfactorily wind a sheet around any of winding shafts having different diameters.

A biaxial winding device according to the present invention includes an endless belt that can contact a peripheral surface of a rotating winding shaft, a drive roller that causes the endless belt to travel at a speed synchronized with the rotation of the winding shaft, A first arm capable of turning about a shaft provided at a position separated from the winding shaft, a first guide roller supported by the first arm and wound with the endless belt, and the first guide roller The first drive means for rotating the first arm in a direction of pressing the endless belt against the winding shaft or retreating from the winding shaft, and the direction in which the endless belt travels with respect to the shaft of the first arm A second arm that can pivot about a shaft provided at a position separated by a second fulcrum, a second guide roller supported by the second arm and wound around the endless belt, and the first guide roller When the endless belt is pressed against the winding shaft, the second arm is pivoted in a direction in which the second guide roller retracts from the winding shaft, and when the first guide roller retracts from the winding shaft, A second driving means for turning the second arm so that a second guide roller presses the endless belt against the winding shaft; and the first guide roller pressing the endless belt against the winding shaft; A tension roller opposed to the two guide rollers across the winding shaft, and the first arm has a circumferential surface of one winding shaft selected from a plurality of winding shafts having different diameters A first guide plate that is curved along the tip and protrudes above the first guide roller, and the second arm is provided with another winding selected from the plurality of winding shafts. On the peripheral surface of the spindle Curved I, and characterized in that a second guide plate which projects the tip portion upwardly of the second guide roller.

  Further, in the biaxial winding device according to the present invention, the tension roller, the first guide roller, the second guide roller, and the drive roller are arranged in the order according to the traveling direction of the endless belt, and the first guide In a state where a roller is pressed between one of the plurality of winding shafts and the tension roller of the endless belt and the first guide roller, the first shaft of the endless belt is pressed. An idler that bends between the two guide rollers and the drive roller in a direction approaching the one take-up shaft is supported by a third arm that can pivot about the shaft of the second arm, and the second guide roller Is pressed between the tension roller and the second guide roller of the endless belt against another winding shaft selected from the plurality of winding shafts. In this state, the first guide roller that retreats from the winding shaft bends between the second guide roller and the drive roller of the endless belt in a direction away from the other winding shaft. And

  When the sheet is wound around one winding shaft using the biaxial winding device according to the present invention, the endless belt is brought into contact with the one winding shaft. Then, with the first guide roller pressing the endless belt against one take-up shaft, with the second guide roller retracted from the one take-up shaft, the leading edge of the sheet is placed between the endless belt and the one take-up shaft. When entering, the leading end of the sheet can be guided in the direction of circling around one winding shaft. Further, when the first guide plate is provided on the first arm that supports the first guide roller, the sheet is guided by the first guide plate so that the starting end of the sheet circulates around one winding shaft. Can do.

  Alternatively, when the sheet is wound around another winding shaft having a diameter larger than that of one winding shaft, the endless belt is pressed against the other winding shaft by the second guide roller, and the first guide roller is moved to the other winding shaft. Retreat from the take-up shaft. In this state, when the leading end of the sheet is inserted between the endless belt and the other winding shaft, the leading end of the sheet can be guided in the direction of turning around the other winding shaft. Further, when the second guide plate is provided on the second arm that supports the second guide roller, the sheet is guided by the second guide plate so that the starting end of the sheet circulates around the other winding shaft. Can do.

  When the above operation is achieved, the sheet can be wound on any of the winding shafts, and a roll can be formed around the winding shaft. Therefore, according to the biaxial winding device according to the present invention, even if winding shafts having different diameters are alternately selected from among a plurality of winding shafts, the sheet is placed on such winding shaft. Can be wound well.

  Further, according to the two-axis winding device according to the present invention, the idler supported by the third arm that can turn about the shaft of the second arm bends in a direction to bring the endless belt closer to the one winding shaft. As a result, the stroke between the second guide roller and the drive roller of the endless belt can be extended. Accordingly, the range in which the tension roller moves to tension the endless belt can be narrow, which is advantageous in simplifying the structure for supporting the tension roller and reducing the size of the apparatus.

  Alternatively, when the sheet is wound around the other winding shaft, the first guide roller that retreats from the other winding shaft moves the portion between the second guide roller and the drive roller of the endless belt to the other winding shaft. Bend away from the direction. Thereby, since the part between the second guide roller and the drive roller of the endless belt is separated from the part that is in contact with the other winding shaft of the endless belt, it is possible to prevent the parts of the endless belt from rubbing. be able to.

  FIG. 1 shows an endless belt 1, a drive roller 2, a first arm 3, a first guide roller 4, a first driving means 5, a second arm 6, a second guide roller 7, and a second drive. A biaxial winding device 10 comprising means 8 and a tension roller 9 is shown. Elements that have already been described as conventional technology will continue to use the same designations below, and illustrations of obvious mechanical elements or configurations of the present invention that are common to conventional technologies will be omitted.

  The biaxial winding device 10 can move up and down below the winding shaft o attached to the winding machine based on the operation of the swing arm 11. In the swing arm 11, one of a pair of swing arms separated in the axial direction of the winding shaft o pointed by an arrow L in FIG. 2 is shown in FIG. A support 12 made of a square pipe is bridged between a pair of swing arms 11. The winding shaft o rotates clockwise by the motor indicated by the arrow α. The drive roller 2 is rotated counterclockwise as indicated by an arrow β by a motor, and is attached to the support 12 via a bearing member. The endless belt 1 is wound around the drive roller 2, and the endless belt 1 travels at a speed synchronized with the rotation of the winding shaft o as the drive roller 2 rotates as described above.

  The pair of swing arms 11 support both ends of the shaft 13. When the biaxial winding device 10 is raised, the shaft 13 is separated obliquely downward from the winding shaft o. This state appears in FIGS. The first arm 3 is fixed to the shaft 13 with a key. The first guide roller 4 is rotatably supported at the tip of the first arm 3, and the endless belt 1 is wound around the first guide roller 4. Further, a first guide plate 14 whose tip is curved in an arc shape is fixed to the tip of the first arm 3 so as to be adjacent to the first guide roller 4. The radius of curvature of the tip portion of the first guide plate 14 is substantially equal to the radius of the winding shaft o. The first drive means 5 is an air cylinder that connects the piston rod 15 to the rear end of the first arm 3, makes the first arm 3 follow the advance and retreat of the piston rod 15, and turns the shaft 13 around the fulcrum.

  The pair of swing arms 11 support both ends of the shaft 16. The shaft 16 is separated from the shaft 13 of the first arm 3 in the traveling direction of the endless belt 1. The second arm 6 is fixed to the shaft 16 with a key. The second guide roller 7 is rotatably supported at the tip of the second arm 6, and the endless belt 1 is wound around the second guide roller 7. Further, a second guide plate 17 whose tip is curved in an arc shape is fixed to the tip of the second arm 6 so as to be adjacent to the second guide roller 7. The radius of curvature of the tip of the second guide plate 17 is set to about twice that of the first guide plate 14. The second drive means 8 is an air cylinder that connects a piston rod 18 to the rear end of the second arm 6, causes the second arm 6 to follow the advance and retreat of the piston rod 18, and turns the shaft 16 around a fulcrum.

  The tension roller 9 is rotatably supported at the tip of a lever 19 supported by the shaft 13. The lever 19 can freely rotate with respect to the shaft 13. The coil spring 20 connecting the support 12 and the rear end of the lever 19 urges the lever 19 so that the tension roller 9 is pushed out to the right side in the drawing by its elastic force. As a result, the tension roller 9 can moderately tension the endless belt.

  The drive roller 2, the tension roller 9, the first guide roller 4, and then the second guide roller 7 are arranged in the order in which the endless belt 1 travels. The shaft 16 of the second arm 6 supports the third arm 21 in the lower part of the stroke of the endless belt 1 from the second guide roller 7 toward the drive roller 2. An idler 22 is rotatably supported at the tip of the third arm 21. Since the third arm 21 can freely rotate with respect to the shaft 16, the idler 22 can turn around the shaft 16 based on the operation of the air cylinder not shown in the figure.

  Next, operation | movement of the biaxial winding apparatus 10 is demonstrated. The first driving means 5 and the second driving means 8 shown in FIG. 1 realize the following operations in accordance with an operator command, electrical signals from sensors, or a program written in a storage medium accessible by a computer.

  When the sheet S is wound around the winding shaft o, the biaxial winding device 10 that first waits below the winding shaft o is raised based on the operation of the swing arm 11, and the endless belt 1 is wound up. Touch the shaft o. Then, the first drive means 5 retracts the piston rod 15 to generate torque in the direction in which the first guide roller 4 presses the endless belt 1 against the take-up shaft o on the first arm 3 shown in FIG. Let On the other hand, the second drive means 8 retreats the piston rod 18 to turn the second arm 6 in the direction in which the second guide roller 7 retracts from the take-up shaft o. The tension roller 9 faces the first guide roller 4 that presses the endless belt 1 against the take-up shaft o at a position separating the take-up shaft o.

  In this state, the starting end e of the sheet S that has entered between the endless belt 1 and the winding shaft o is guided in a direction along the peripheral surface of the winding shaft o while being sandwiched between the two. Further, in a state where the first guide roller 4 presses the endless belt 1 against the take-up shaft o, the first guide plate 14 protrudes the tip portion above the first guide roller 4, and the peripheral surface of the take-up shaft o To approach. For this reason, even after the endless belt 1 turns in the direction from the take-up shaft o to the second guide roller 7 and turns in the direction away from the take-up shaft o following the first guide roller 4, the sheet S Is guided to the vicinity of the touch roller Tr positioned above the first guide roller 4 by the first guide plate 14. When the above operation is achieved, the sheet S can be wound around the winding shaft o, and a roll can be formed around the winding shaft o.

  The idler 22 rises according to the third arm 21 that rotates clockwise in the drawing, and pushes up between the second guide roller 7 and the drive roller 2 of the endless belt 1. As a result, the endless belt 1 is bent in a direction approaching the winding shaft o, and the stroke between the second guide roller 7 and the drive roller 2 of the endless belt 1 can be extended. Accordingly, the range in which the tension roller 9 moves to tension the endless belt 1 can be narrowed, so the lever 19 can be downsized and the coil spring 20 can be shortened.

  A case where a winding shaft O having a larger diameter than the winding shaft o is attached to the winding machine after the winding shaft o is removed from the winding machine together with the roll will be described below. The operation of bringing the endless belt 1 into contact with the winding shaft O is as described above. The first drive means 5 moves the piston rod 15 forward, thereby turning the first arm 3 in the direction in which the first guide roller 4 retracts from the take-up shaft O as shown in FIG. At the same time, the second driving means 8 moves the piston rod 18 forward so that the second guide roller 7 turns the second arm 6 so as to press the endless belt 1 against the winding shaft O.

  In this state, the tension roller 9 faces the second guide roller 7 that presses the endless belt 1 against the take-up shaft O at a position separating the take-up shaft O. The starting end e of the sheet S that has entered between the endless belt 1 and the winding shaft O is guided in a direction along the peripheral surface of the winding shaft O while being sandwiched between the two. Further, in a state where the second guide roller 7 presses the endless belt 1 against the take-up shaft O, the second guide plate 17 protrudes from the tip of the second guide roller 7 above the peripheral surface of the take-up shaft O. To approach. For this reason, even after the endless belt 1 turns in the direction from the take-up shaft o to the second guide roller 7 and turns in the direction away from the take-up shaft o following the first guide roller 4, the sheet S Is guided to the upper side of the second guide roller 7 by the second guide plate 17.

  When the above operation is achieved, the sheet S can be wound around the winding shaft O, and a roll can be formed around the winding shaft O. Therefore, according to the biaxial winding device 10, even if the winding shafts o and O selected from the plurality of winding shafts may be alternately attached to the winding machine, the winding shaft o, The sheet S can be satisfactorily wound around any of O.

  Further, as described above, the amount of bending of the endless belt 1 is larger when the endless belt 1 is brought into contact with the take-up shaft O than when the endless belt 1 is brought into contact with the take-up shaft o. Accordingly, the portion of the endless belt 1 that is in contact with the winding shaft O is retracted from the winding shaft O so that the portion of the endless belt 1 between the second guide roller 7 and the drive roller 2 does not approach. One guide roller 4 can bend the part of the endless belt 1 between the second guide roller 7 and the drive roller 2 in a direction away from the winding shaft O.

  It should be noted that the present invention can be implemented in variously modified, modified, or modified forms based on the knowledge of those skilled in the art without departing from the spirit of the present invention. Moreover, although the above description paid attention to the one-axis | both-axis type winding apparatus 10, compared with the length of the axial direction of the winding shaft o, in other words, the width | variety of the sheet | seat S wound around the winding shaft o, Since the widths of the endless belt 1, the first guide plate 14, and the second guide plate 17 are limited, it is desirable to arrange a plurality of two-axis winding devices 10 in the axial direction of the winding shaft o.

  For example, the plurality of first arms 3 may be fixed to the shaft 13 at equal intervals in the axial direction, and the plurality of second arms 6 may be fixed to the shaft 16 at equal intervals in the axial direction. Thereby, the some 1st guide roller 4, the 2nd guide roller 7, and the some endless belt 1 can be arrange | positioned along with an axial direction. The same applies to the drive roller 2, the tension roller 9, the first guide plate 14, the second guide plate 17, and the idler 22.

  The present invention is a technique useful for saving or automating the work of replacing the winding shaft of the winding machine.

The side view of the biaxial winding apparatus which concerns on embodiment of this invention. The perspective view of the biaxial winding apparatus which concerns on embodiment of this invention. The side view which shows an example of operation | movement of the principal part of the biaxial winding apparatus which concerns on embodiment of this invention. The side view which shows the other example of operation | movement of the principal part of the biaxial winding apparatus which concerns on embodiment of this invention. The side view of the winder provided with the winding apparatus of the prior art example. The side view which shows an example of operation | movement of the principal part of the winding apparatus of a prior art example. The side view which shows the other example of operation | movement of the principal part of the winding apparatus of a prior art example.

1: Endless belt 2: Drive roller 3: First arm 4: First guide roller 5: First drive means 6: Second arm 7: Second guide roller 8: Second drive means 9: Tension roller 10: Biaxial Type winding device 13, 16: shaft 14: first guide plate 17: second guide plate 22: idler S: sea e: starting end o, O: winding shaft

Claims (2)

An endless belt that can contact the peripheral surface of the rotating winding shaft;
A drive roller that drives the endless belt at a speed synchronized with the rotation of the winding shaft;
A first arm that can pivot about a shaft provided at a position separated from the winding shaft;
A first guide roller supported by the first arm and wound around the endless belt;
First driving means for causing the first guide roller to press the endless belt against the take-up shaft, or to turn the first arm in a direction away from the take-up shaft;
A second arm capable of turning around a shaft provided at a position separated in a direction in which the endless belt travels with respect to the shaft of the first arm;
A second guide roller supported by the second arm and wound around the endless belt;
When the first guide roller presses the endless belt against the take-up shaft, the second guide roller turns the second arm in a direction away from the take-up shaft, and the first guide roller turns the take-up shaft Second drive means for turning the second arm so that the second guide roller presses the endless belt against the winding shaft when retracted from the shaft;
A tension roller facing the first guide roller that presses the endless belt against the winding shaft or the second guide roller across the winding shaft ;
The first arm is curved at a tip portion along a circumferential surface of one winding shaft selected from a plurality of winding shafts having different diameters, and the tip portion is disposed above the first guide roller. Providing a protruding first guide plate,
A second guide plate that curves along the peripheral surface of another winding shaft selected from the plurality of winding shafts and protrudes forward from the second guide roller to the second arm. A biaxial winding device characterized by comprising: The tension roller, the first guide roller, the second guide roller, and the drive roller are arranged in order according to the traveling direction of the endless belt,
The endless belt is pressed between the tension roller of the endless belt and the first guide roller on one winding shaft selected from the plurality of winding shafts. An idler that bends the belt between the second guide roller and the drive roller in a direction approaching the one winding shaft is supported by a third arm that can pivot about the shaft of the second arm,
In the state where the tension roller of the endless belt and the second guide roller are pressed against another winding shaft selected from the plurality of winding shafts, the second guide roller is It said first guide roller retreat from up shaft, between the second guide roller and said drive roller of said endless belt, to claim 1, characterized in that deflecting in a direction away from the other of the take-up shaft The biaxial winding device as described.

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