JP3465874B2 - Method and apparatus for winding sheet material - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for winding a sheet such as a film, cloth, paper and the like.
In particular, the present invention relates to a method and an apparatus for winding an end portion of the above-mentioned sheet-like material around a surface of a paper tube and winding it on the paper tube. 2. Description of the Related Art As a means for winding the end of a sheet-like material around the surface of a paper tube, an adhesive or an adhesive tape is widely used. However, these methods have problems in that the equipment becomes complicated and the adhesive adheres to unnecessary parts, thereby deteriorating the quality of the product. Therefore, it is considered to perform winding without bonding. Have been. [0003] However, the surface of the paper tube is smooth and it is not easy to lock the above-mentioned end portion. It is feared that it will occur. The present invention pays attention to such a problem, and provides a method and an apparatus which can realize a reliable winding without using the above-mentioned adhesive or the like. [0004] In order to achieve the above-mentioned object, an apparatus for winding an end of a long sheet-like material on the surface of a rotating paper tube and winding it on the paper tube. A spindle that is mounted with the paper tube and rotates; a winding belt that contacts a surface of the paper tube on the spindle for a predetermined length and travels in the same direction as the paper tube; At a predetermined position, and a folding device for folding a portion separated by a predetermined length from an end of the sheet-like material cut by the cutter and introducing the folded portion between the paper tube and the winding belt. The present invention proposes a sheet-like material winding device characterized by comprising the following. Hereinafter, embodiments of the present invention will be described in detail with reference to examples. FIG. 1 and FIG. 2 show a winding machine according to the present invention. In FIG. 1, reference numeral 1 denotes a turret type winder frame 2
Is a circular turret rotatably supported by a main shaft 3 supported by a plurality of spindles 4 and 4 which are individually rotated and driven by motors (not shown) at positions 180 degrees apart from each other. Each is supported. A paper tube 5 is mounted on a spindle 4a located on the left side of the drawing, and a sheet S continuously fed from the left is wound on the paper tube 5 via rollers 6 and 7 in order. When the paper tube 5 is fully wound, the turret 1 is rotated by 180 degrees in the direction of arrow A, and is in the state shown in FIG. The turret 1 has two guide rollers 8 between the spindles 4 and 4,
At this time, the guide roller 8 located on the upper side functions to guide the sheet S so that the sheet S does not interfere with components such as the main shaft 3. Prior to the rotation of the turret, a new paper tube 5 is mounted on the right spindle 4b. After the turret rotation, the sheet S is cut between the two paper tubes 5 and 5, and then the left of the sheet S is cut. The sheet S is continuously wound on the new paper tube 5. The machine base 2 is provided with devices 10, 11, and 12 described below for cutting the sheet S and winding the sheet S around a new paper tube 5. These devices 1
As shown in FIG. 1, 0, 11, and 12 are configured to be able to retreat outside the rotation range B of the fully-wound sheet due to the rotation of the turret and to cut and wind the sheet S, as shown in FIG. 1. Only at this time, as shown in FIG. 2, it moves to the vicinity of the left paper tube 4b. The roller 7 is rotatably supported at the tip of a swing lever 14 supported by a shaft 13 on the machine base 2, and a fluid cylinder 15 supported by the machine base 2 reciprocates at the lower end of the lever 14. By driving, the sheet reciprocates between the positions shown in FIGS. 1 and 2. When the sheet is in the left position, it is out of the rotation range B. Guide S. The cutter device 10 is supported on a bracket 17 rotatably supported on the machine base 2 by a shaft 16, and its attitude is changed on the bracket by driving a motor M fixed to the bracket 17. Then, the cutter S is driven by a motor described later to cut the sheet S. The sheet folding device 11 includes a fluid cylinder 1
8 is provided with an attachment with an edge 19 extending in a direction perpendicular to the paper surface of FIGS. 1 and 2 at the tip of the rod.
Moves to the upper position of the paper tube 5. A bracket 17 having the cutter device 10 and the sheet folding device 11 is connected to a rod of a fluid cylinder 21 provided on the machine base 2, and rotates around the shaft 16 as the cylinder 21 is driven. , The cutter device 10 and the folding device 11 are positioned outside the rotation range B. When the cutting device 10 is located at a lower position, the cutter device 10 is moved to the vicinity of the running portion of the sheet S, and the edge portion 19 of the folding device 11 is Move each to the vicinity. The sheet wrapping device 12 is provided on a frame 23 rotatably supported by the machine base 2 on a shaft 22. The frame 23 is connected to a rod of a fluid cylinder 24 provided on the machine base 2, and the shaft 22
Turn around. 3 to 6, the sheet winding device 12 mainly includes first and second lever devices 25 and 26 and a belt driving device 27. The two lever devices 25 and 26 are pivotally supported on the frame 23 by a common shaft 28, and have a first lever 29 and a second lever 30 having a rectangular shape. The levers 29 and 30 have pulleys 31 and 32 rotatably provided at one end, respectively, and the other ends are connected to piston rods of fluid cylinders 33 and 34 provided on the frame 23. The belt driving device 27 comprises a pulley 36 which is driven to rotate by a motor 35, and an endless wrapping belt 37 wound around the pulley 36 and the pulleys 31 and 32. The belt 37 runs in the counterclockwise direction in FIG. Next, the detailed structure of the apparatus of this embodiment will be described together with its operation. In FIG. 1, a sheet S is a turret 1
Is continuously wound on the paper tube 5 of the spindle 4a located on the left side of the drawing. At this time, the rod of the fluid cylinder 21 is in an extended state and the rod of the fluid cylinder 24 is in a contracted state.
1, the sheet winding device 12 is retracted outside the range B as described above. Further, the rod of another fluid cylinder 15 is extended to position the roller 7 on the left side as shown in the drawing, and the sheet S travels from the left while being guided by the peripheral surfaces of the rollers 6 and 7, Is wound on the paper tube 5 rotating clockwise as shown in FIG. The sheet winding device 12 at this time is as shown in FIG. 3, and the fluid cylinder 33 of the first lever device 25
The rod is extended and the cylinder 34 of the second lever device 26 is extended.
Are in a state of being shortened, and the motor 35 of the belt driving device 27 is in a state of stopping driving. When the sensor (not shown) detects that the paper tube 5 is full, the turret 1 is first moved 180 degrees in the A direction.
When the rotation of the fluid cylinder 24 is extended and the rods of the fluid cylinders 15 and 21 are shortened, the state shown in FIG. 2 is reached. At this time, at the original left position, a new empty paper tube 5 is placed in a state mounted on the spindle 4b.
As described above, the cutter device 10 and the sheet folding device 11 are arranged at an upper position near the left paper tube 5, and the sheet winding device 12 is arranged at a lower position near the paper tube 5.
The left paper tube 5 continues to rotate clockwise together with the spindle 4b, and the roller 7 contacts the peripheral surface of the paper tube 5 to guide the sheet S to the surface of the paper tube 4. At this time, the cutter device 10, the sheet folding device 11, and the sheet winding device 12 are in the state shown in FIG. After the rod of the fluid cylinder 21 is shortened, the motor M is immediately driven by a switch for detecting the operation of the bracket 17 so that the plate 40 supported on the bracket 17 is rotated about the shaft 45. The sheet S is turned by 90 degrees to position the sheet S in the guide groove 41 of the plate 40. The sheet S may be positioned in the guide groove 41 of the plate 40 by raising and lowering the cutter device 10 instead of turning the cutter device 10 in this manner. Further, on both sides of the guide groove 41, a cutter 44 having a blade 43 driven to rotate by a motor 42 and a rotating body 47 in contact therewith is arranged, and the blade 43 rotates just after the operation of the motor M is completed. The sheet S in the groove 41 is cut by traveling in the width direction of the sheet by an external device. The cutting position of the sheet S by the blade 43 is a position left by a predetermined length from the paper tube 5 as shown in the figure. The sheet folding device 11 is in a state in which the rod of the fluid cylinder 18 is shortened, and the edge 19 is arranged to face the upper side of the sheet S traveling from the paper tube 5 to the cutter device 10. The sheet winding device 12 maintains the same state as in FIG. 3, and the frame 23 is temporarily stopped at an angle such that the winding belt 37 does not contact the paper tube 5 as shown in FIG. The stop and release of the stop of the frame 23 are performed by a plurality of stoppers (not shown) provided at predetermined positions. Thereafter, the cutter device 10, the sheet folding device 11, and the sheet wrapping device 12 shift to the state shown in FIG. After the cutter device 10 has cut the sheet S, the motor M is driven again by a timer (not shown), and the plate 40 is turned 90 degrees in the reverse direction to return to the original position. Simultaneously with the end of the operation of the motor M, the cylinder 18 of the sheet folding device 11 is driven to extend the rod, and the end of the sheet S, whose edge 19 has been cut, is pressed and bent as shown in FIG. The frame 23 pivots slightly counterclockwise from the position in FIG. 4 to press the wrapping belt 37 against the paper tube 5. The state shown in FIG.
Edge 19 of the sheet folding device 11 at the same time
Is further advanced, the rod of the cylinder 33 of the sheet winding device 12 is shortened, and the rod of the cylinder 34 is extended. As a result, both levers 29 and 30 pivot to rotate the belt 37.
Is wound around the surface of the paper tube 5. Then, the edge 19 enters between the belt 37 and the paper tube 5, and acts to push the sheet S while folding the end thereof. As a result, the sheet S is guided and introduced to the surface of the paper tube 5 in a state where the sheet S is folded with a predetermined length left from its end, and is interposed between the rotating paper tube 5 and the running winding belt 37. It is pinched and wound around the paper tube peripheral surface. After a lapse of a predetermined time, each device returns to the original state shown in FIG. 1, and the sheet S is continuously wound on the paper tube 5 at the left position. Since the end of the thus wound sheet S is folded back, when the sheet S is wound up a plurality of times, a greater pressure is applied to the folded portion than to the other portions. It is securely locked on the paper tube without causing slippage. As described above, according to the invention of the present application, reliable winding can be performed without using an adhesive or the like, so that high-speed winding can be realized without causing a problem. it can.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view of a winder according to the present invention. FIG. 2 is a front view of the winder in a state where the turret is rotated by 180 degrees. FIG. 3 is a front view showing the sheet winding device. FIG. 4 is a front view showing a cutter device, a sheet folding device, and a sheet winding device. FIG. 5 is a front view showing another state of the cutter device, the sheet folding device, and the sheet winding device. FIG. 6 is a front view showing still another state of the cutter device, the sheet folding device, and the sheet winding device. [Explanation of Signs] 4: Spindle 5: Paper tube 10: Cutter device 11: Folding device 37: Winding belt S: Sheet

Claims (1)

(57) [Claim 1] An apparatus for winding an end of a long sheet-like material around the surface of a rotating paper tube and winding it on the paper tube,
A spindle rotating with the paper tube mounted thereon, a wrapping belt that contacts the surface of the paper tube on the spindle for a predetermined length and travels in the same direction as the rotation direction of the paper tube, and the sheet-like material. A cutter for cutting at a predetermined position, and a fold for folding back a portion separated by a predetermined length from an end of the sheet-like material cut by the cutter and introducing the fold portion between the paper tube and the winding belt. And a device for winding a sheet-like material.