JPS60302B2 - Continuous sheet winding method and device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and apparatus for winding a continuous strip of synthetic resin film, foam, paper, cloth, etc. The present invention also relates to a method and apparatus for continuously winding sheets without stopping the operation of the machine during rewinding.

In conventional sheet winding, the first winding of the sheet is
The sheet end is fixed to the bobbin by applying adhesive to the core bobbin and adhering the sheet end, or by applying suction force from air holes provided in the bobbin to attract the sheet end onto the bobbin. winding.

However, according to the above rule, complete automatic winding is possible only when the sheet is made of a material that is thin, has low bending rigidity, and is highly flexible; when the sheet is made of a material that is highly rigid and brittle, Since it is impossible to tightly wrap the sheet end around the core shaft, it becomes loose during winding, causing misalignment, the roll end surface is not vertical, and the sheet end is folded, causing the sheet to become loose. There were drawbacks that caused problems such as cutting and creases.

SUMMARY OF THE INVENTION In view of the conventional drawbacks, an object of the present invention is to provide a method and apparatus for correctly winding a sheet by fixing the end of the sheet to a gripper and winding it firmly around a core shaft. It is.

Another objective is to continuously feed the sheet without using a core bobbin and without stopping the machine when replacing the take-up roll. An object of the present invention is to provide a method and apparatus. Next, the present invention will be explained based on embodiments shown in the drawings.

1 and 2 show the overall arrangement of the sheet winding device, in which a tension roller row 11 is provided on the upstream side to adjust the tension of the sheet 12 and feed the sheet.
Further, a rotating drum 13 and a support device 2 are arranged on the machine stand 1 to form a winding roll 4.

The rotating drum 13 is connected to a drive device 17 via a transmission means 15 and a speed reducer 16, and rotates at a constant speed while winding the sheet.

Further, the support device 2 has a pair of support arms 2 on both sides of the sheet transition path.
1 and 21 facing each other, and a cylinder device 23 is connected to a pivot 22 that fixes the base end of the support arm 21.
is tilted to a vertical position in the winding process and a tilted position in the rewinding process, and a vibration adjustment means 24 such as an air cylinder is connected to both support arms 21, and the movement changes as the roll diameter increases as the sheet is wound. The inclination angle of the support arm 21 to be
2 is detected by the movement of an eccentric cam (not shown) fixed to the rotating drum 2, and changes the fluid pressure of the head motion adjustment means 24 to press the roll 14 against the rotating drum 13 with constant light pressure. be.

At the upper end of the support arm 21, a sheet gripping device 3, a rotation device 65 for rotating the device 3, a sliding device 6 for moving the gripping device 3 into and out of the sheet transfer path, and a roll end surface pressing device 7 are provided, respectively. The Q gripping device 3, which moves integrally with the movement of the support arm 21, has a cylindrical core shaft 31 whose tip portion having a length half the width of the sheet projects to the center of the sheet transfer path. , and a gripping tool 4 that is located in a core shaft 31 and clamps the sheet, and the core shaft 31 has a tapered shape that slightly reduces the outer diameter toward the tip to facilitate extraction from the roll. .

Further, engagement unevenness 32 is formed on the tip end surface so that when the tip is brought into abutment and engaged with the other opposing core shaft 31a, a straight core shaft spanning the entire width of the sheet is formed. A split groove 33 is opened at the tip of the core shaft 3 from the tip toward the shaft body, and one of the split grooves has a blade plate 34 facing in the rotational direction of the core shaft 31 so that the base end of the core shaft is high and the tip is gradually tapered. The proximal end of the core shaft is rotatably and slidably supported by a support base 63, which will be described later.

The gripping odor 4 has a pair of gripping plates 41 and 42 housed in a core shaft 31, and an opening/closing mechanism 5 for moving the gripping plates 41 and 42 toward and away from each other. is supported on the support walls 38, 38 in the core shaft 31, and the grip plate 41
, 42, a guide pin 44 that abuts the core shaft 31 is inserted into an inclined guide hole 43 that is opened symmetrically through the side surfaces of the gripping plates 41, 42, and an inclined back surface 45 that matches the inclination of the guide hole 43 is formed on the back surface of the gripping plates 41, 42. , an inclined guide surface 46 in contact with the inclined rear surface 45 is provided on the inner surface of the core shaft, and the grip plates 41 and 42 are connected to the guide hole 43.
By reciprocating in the range of It is something that does.

The reciprocating movement of the gripping plates 41, 42 is regulated by the operation of the opening/closing mechanism 5, and the protruding shafts 48, 48 protruding from the base ends of the gripping plates 41, 42 are allowed to move toward and away from each other, respectively. The tip of the piston rod 53 of the cylinder 52 formed at the base end of the core shaft 31 is connected to the locking plate 51 as shown in FIG. The interposed compression spring 56 pushes the piston 54 toward the cylinder chamber 57, and the piston rod 5
3 to keep both grip plates 41 and 42 close to each other at all times, and a pressure fluid inflow pipe 59 is connected to the cylinder chamber 57 via a rotary joint 58, and the piston 54 is moved against the spring 56.
By returning the , the piston rod 53 is pushed, and the gripping plate 4
1 and 42 are opened.

The core shaft 31 is slidably supported by a journal bearing 61, and the bearing 61 is rotatably supported by a support base 63 via a bearing 62.

Further, the cylinder 52 at the base end of the core shaft 31 is rotatably supported by a carriage 64. The support stand 63 is fixed to the upper end of the support arm 21 and moves integrally with the support arm 21, and the reciprocating stand 64 is linked to a bog device 6, such as a two-stroke cylinder, fixed to the support stand 63. Due to the operation of the device 6,
The core sea bream 31 and the gripping device 3 are slid to cause the tip of the core bag to emerge and retract from the roll transition path. A rotating device 65 such as a deceleration motor is mounted on the reciprocating table 64, and by connecting the device 65 and sprockets 66, 66 fixed to the cylinder 52 via a transmission means 67, the core shaft 31 is mounted on a support stand. 63) and rotates at the appropriate time. The support base 63 further includes a presser plate 71 and a presser plate 71 through which the core shaft 31 passes.
A holding device 7 consisting of a driving device 74 for reciprocating the
The presser plate 71 is rotatably locked through the mounting plate 72 and the reciprocating shaft 75 of the drive device 74 is connected to the mounting plate 72 .

- This is to move the screw closer to and away from the end surface of the loop 4. Shinbrush 3
At the proximal end of 1, as clearly shown in FIGS. 4 and 6,
A positioning device 35 is equipped with a positioning pin 37 that is attached to a slot 36 along the ball direction and a support base 63 and that protrudes and retracts toward the slot 36.
By advancing the core shaft 31 in a state in which the core shaft 7 is fully engaged, the direction of the groove 33 of the core shaft 31 can be made to match the direction of sheet movement during winding. A receiving device 8 for the roll 14 is arranged on the machine stand in front of the support arm 21.

The device 8 includes a pair of rotary rollers 81 and 81a that are fixed to brackets 82 and 82, respectively, and placed at an appropriate receiving position by an opening angle adjusting means 83, and a drive motor 84 is connected to one of the rollers 81. The take-up roll 14 received and supported on the rollers 81 and 81a is driven to rotate, and a discharge device 85 is provided below both rollers 81 and 81a to take the take-up roll 14 out of the machine. Furthermore, above the rotating drum 13, there are provided a presser roller 91 that operates when rewinding the sheet, and a pair of positioning rollers 9, 9a that position the sheet and increase the tension of the sheet.

The presser roller 91 is pivotally fixed to the tip of the swinging punch 92, and is operated by a drive device 93 connected to the other end of the swinging punch 92 to press the sheet 12 against the rotating drum 13 to prevent slippage.

Further, the positioning rollers 9, 9a are arranged in swing villages 94, 96, respectively.
Each swinging village 94, 95 is pivoted to the machine base at an appropriate position so as to be able to swing freely, and by the linked operation of drive devices 96, 97, the swinging villages 94, 95 can be moved toward and away from each other. A rotating device 98 provided on a punch 95 drives the roller 9 at a higher speed than the circumferential speed of the rotating drum 13, thereby tensioning the sheet 12 between the rotating drum 13 and the positioning rollers 9, 9a.

However, during the sheet winding process, the presser roller 91 and the positioning rollers 9, 9a retreat from the sheet transfer path and are in a standby position where they do not come into contact even with the maximum diameter of the winding roll, and the support arm 21 stands up and the core shaft 31 , 31a move forward into the sheet transition path, engage the unevenness 32 at the tip of the core shaft with each other, and align in a straight line. The sheet 12 that enters through the groove 33 is strongly gripped between the gripping plates 41 and 42 and rolled up.
The sheet 12 rolls due to frictional contact with the rotating drum 13.
The supporting arm 21 rises as the winding diameter increases, but the pressure between the rotating drum 13 and the roll 14 is kept constant by the action of the adjusting means 24. When the winding roll 14 reaches its maximum diameter, the support arm 21 is moved to the position indicated by the chain line in FIG. The rotation of the roll 14 causes the roll 14 to continue winding up the sheet.

In this state, in the gripping devices 3, 3 on both sides, the pressure fluid flowing into the cylinder chamber 57 moves the piston 54 to the left against the spring 56, and the gripping plate 41 in the rotating core shaft 31 moves to the left.
, 42 along the guy hole 43 to release the grip at the beginning end of the sheet winding.

At the same time, the drive device 74 of the presser device 7 operates to release the presser plate 7.
1 moves forward and presses the end face of the rotating take-up roll 14 to prevent the roll from collapsing. When the end face of the roll is pressed down, the sliding device 6 is operated to push the carriage 64 in the direction away from the roll, and the core shafts 31, 31 are pushed out.
(a rotates integrally with the roll 14) and separates the engagement at the tip;
When the tip of the core shaft is moved in the direction to be pulled out from the roll, the press plate 71 presses the end face of the roll at this time, so that the core shaft can escape while preventing collapse or displacement of the end face of the roll. When the pair of gripping devices 3, 3 have completely escaped to both sides of the roll, the presser device 7' returns to its original position, and the support arm 21 rises again to its original winding start position as shown in FIG. 35 causes the positioning pin 37 to align with the core shaft 31.
It engages in the slot 36 on the side surface to align the split groove 33 at the tip of the core shaft with the plane of the sheet.

Further, the presser roller 91 and the positioning rollers 9, 9a hold the sheet continuously fed to the roll 14 and tension it at a predetermined position. With respect to the sheet 12 stretched between both rollers 9 and 91, the gripping device 3, which faces both sides of the sheet 12, moves forward by the operation of the sliding device 6, and closes the split groove 33 at the tip of the core shaft 31. When the sheet is inserted between the gripping plates 41 and 42, the pair of core shafts 31 and 31a approach each other, and the unevenness 32 on the tip surfaces match again to be integrated.

The sheet is perpendicular to the gripping tool 4, passes through the split groove 33 and between the closed gripping plates 41 and 42, and is wound up on the roll 14. When the piston 54 is returned, the spring pressure causes the gripping plates 41 and 42 to approach each other and hold the sheet against the gripping surface 47, and the pin 37 of the positioning device 35 simultaneously escapes from the slot 36 and is removed by the operation of the rotating device 65. The core shaft 31 starts rapidly rotating in the direction of the blade plate 34.

Therefore, by rotating the respective blade plates 34, 34 of both gripping devices 3, 3, the sheet is cut from the edge green toward the center,
While feeding the sheet to the roll on the receiving device 8 is stopped, the core shaft 31 starts winding the sheet on its upper surface with the end of the sheet being gripped by the gripping surface 47.

When the winding of the sheet onto the core shaft becomes steady, the presser row 91 and the positioning rollers 9, 9a are retreated, the drive of the rotating device 65 is switched to idle rotation, and the core shaft 31 is brought into light pressure contact with the rotating drum 13, as described above. The winding process is repeated again.

In carrying out the present invention, one gripping device 3- is provided only on one side of the sheet transfer path, and the lengths of the blade plate, the tip of the core shaft, and the gripping plates 41, 42 are made to match the sheet width, and the core is It is also possible to make the shaft 3 guard appear and retract from one side of the sheet, or remove the tip of the core shaft 31 to expose the gripping plates 41 and 42,
4 on the gripping surface 47, the back surface of the gripping plate is formed into an arc shape, and an inclined guide hole 43 and a guide pin 44 are provided at the base end of the gripping plate, so that the sheet can be directly attached to the upper surface of the gripping plates 41, 42. Of course, you can also roll it.

In the present invention, as described above, the sheet end is gripped by the gripper 4,41 disposed orthogonally to the sheet transfer direction, and the sheet starts to be wound directly or immediately onto the tip of the core shaft 31 that covers it, so that the sheet can be held straight. In addition, the grip at the edge of the sheet is strong and the winding direction is not biased, and even if the sheet is extremely rigid or brittle, it can be wound correctly without any problems.

Furthermore, after winding the sheet into a roll, the core shaft 31 and gripper 4 are pulled out to form a coreless roll, so there is no need for a winding bobbin as in the past, and the rewinding of the sheet is done using the gripping device. is done by re-gripping the sheet,
Since the machine does not stop operating, efficient high-speed winding can be carried out smoothly, and many other excellent effects are exhibited.

[Brief explanation of drawings]

FIG. 1 is an overall front view of the winding process, FIG. 2 is an overall front view illustrating the sheet rewinding process, and FIG. 3 is a plan view of the gripping device.
FIG. 4 is a partially cut-away perspective view of the same as above, FIG. 5 is a central vertical sectional view of the gripping device, and FIG. 6 is a sectional view taken along the line W- in FIG. 5. Explanation of main symbols, 2...Support device, 3...
Sheet gripping device, 4... Gripping tool, 5...
-Opening/closing mechanism, 6...sliding device, 7...pressing device, 9... positioning roller. 12... Sheet, 13... Rotating drum, 14...
・Take-up roll, 31 foot... Core shaft, 41, 42...
...Gripping plate, 65...Rotating device, 71...
...Press plate, 74... Drive device, fire extinguisher, 2 figures not shown, 3 figures for moxibustion, 4 figures for labor, 5 figures for inferior figure.

Claims (1)

[Scope of Claims] 1. A sheet is gripped so as to be openable and closable by a gripping tool having a pair of opening/closing gripping plates and blade plates arranged in parallel to the gripping plates, and the gripping tool is rotated in one direction. Alternatively, after forming a take-up roll by winding the sheet directly onto a core shaft that covers the gripping tool, while continuing the winding rotation of the roll, release the sheet gripping tool of the gripping tool in the roll, and press the sheet onto the end surface of the roll. While applying the plate, pull out the gripping tool in the direction of the presser plate, move the gripping tool to the side of the sheet upstream of the roll, insert the opening of the gripping plate into the moving sheet, close the gripping plate, and grip the sheet. A continuous sheet winding method characterized by simultaneously rotating the sheet to cut the sheet, separating the sheet from a roll, and winding the sheet onto a gripper. 2. A gripping device 3 comprising a gripping tool 4 consisting of a pair of gripping plates 41 and 42 that are connected to the opening/closing mechanism 5 and removably sandwich the sheet, and a blade plate 34 arranged parallel to the gripping tool, and a gripping device 3 that rotates the gripping tool 4. a rotating device 65 for holding the roll wound on the gripping tool 4; a pressing device 7 comprising a pressing plate 71 for pressing the end surface of the roll wound on the gripping tool 4; and a driving device 74 for moving the pressing plate 71 forward and backward along the gripping tool 4; 4 reciprocatingly in a direction perpendicular to the sheet transfer path; and a receiving device 8 which is comprised of rolls 81 and 81a disposed downstream of the sheet winding position and rotates while supporting the winding roll. A supporting device 2 supports the gripping tool 4 and moves the gripping tool 4 between the sheet winding position and the receiving device 8 in a timely manner, and a supporting device 2 that detachably stops the rotation of the gripping tool 4 and opens the opening between the gripping plates 41 and 42 to transfer the sheet. A continuous sheet winding device comprising a positioning device 9 for aligning the sheet with the path.