JP2510867Y2 - Rewinding and cutting device for winder - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION The present invention is to continuously wind a sheet material such as paper and film on one bobbin to a predetermined length, and then cut the sheet material on the other bobbin for rewinding. The present invention relates to a rewinding / cutting device in a winder configured to wind.

[0002]

2. Description of the Related Art Conventionally, a rewinding / cutting device in a winder for continuously winding a sheet material has been widely adopted, and a typical example thereof will be described with reference to FIG.

In the figure, a sheet material 31 such as paper and film is used.
Is running from the left to the right, and one bobbin of a winder (not shown) is on the right, and after winding to a predetermined length, the sheet material 31 is cut and wound on the other holding bobbin 32. The state where the replacement is performed is shown.

Reference numeral 33 denotes a rewinding arm, one end of which is pivotally supported by a rotating shaft 34 on a frame (not shown), and the revolving shaft 3 is rewound upon rewinding
4 is used as a fulcrum to be rotated by a drive device (not shown), and the other end is brought close to the backup bobbin 32 waiting for rewinding, and is removed to its original position after rewinding.

Reference numeral 35 denotes a cutter arm, one end of which is rotatable about a rotary shaft 36 which is pivotally supported on the other end of the rewinding arm 33, and the other end of which is provided with a cutter 37 on the sheet material 31 at substantially right angles to the cutter arm 35. They are opposed to each other and are attached over the entire width.

Reference numeral 38 denotes a rubber-rolled presser roller, one end of which is fixed to a rotary shaft 36 and is pivotally supported on the other end of a presser arm 39 which is shorter than the cutter arm 35, and the cutter arm 35 is actuated during rewinding. It is rotated in conjunction with and is pressed against the backup bobbin 32.

Reference numeral 40 is an air cylinder, and the clevis on the rod end side is rotatably attached to a support shaft 41 provided on the rewinding arm 33, and one end on the cylinder rod end side is the rotating shaft 3.
It is rotatably attached to a pin 43 provided at the other end of the lever 42 fixed to the position 6. Air is supplied to the air cylinder 40 from a pressurized air source (not shown) through a switching valve.

In the rewinding performed by the rewinding and cutting device having such a structure, when the bobbin (not shown) is wound by a predetermined length, the rewinding arm 33 is first rotated by a drive device (not shown). And is brought close to the backup bobbin 32 at the rewinding position. Next, the holding bobbin 32 is pre-driven by the control device of the winder to a surface speed synchronized with the traveling speed of the sheet material 31, and then the air cylinder 40 is actuated by the rewinding signal to connect the cutter arm via the lever 42. 35 is the rotating shaft 3
The sheet material 31 is rotated around 6 as a fulcrum to cut the sheet material 31 by the cutter 37 at the leading end, and the pressing roller 38 is also rotated in conjunction with the cutting material to cut the sheet material 31 into the new sheet leading edge 44. Rewinding is completed by pressing and adhering and winding.

[0009]

In the conventional rewinding / cutting apparatus as described above, as shown in FIG. 2, the rotating shaft 36, which is the fulcrum of the rotation of the cutter arm 35 and the pressing arm 39, is a bobbin. The cutter arm 35 is located on the upstream side of the sheet material 31 in the traveling direction with respect to the position of 32 and extends to the downstream side in the traveling direction so as to straddle the holding bobbin 32.
The cutter 37 attached to the tip of the sheet material 31 cuts the sheet material 31 through the traveling line, and the presser roller 38 provided on the presser arm 39 shorter than the cutter arm 35 for winding the sheet material 31 is attached to the cutter arm 35. Since the position of contacting with the backup bobbin 32 is distant from the position of contacting with the backup bobbin 32, the sheet front end 44 is separated from the backup bobbin 32 and is not pressed but is turned up, causing the roll-up and causing winding failure.

Further, since the pressing force of the pressing roller 38 against the holding bobbin 32 acts as a negative factor on the pre-drive effect of the holding bobbin 32 by the winding machine control device and the winding tension control immediately after rewinding, an appropriate design is performed. And need a fine adjustment.

Further, the operation of the air cylinder 40 for cutting the sheet material 31 becomes a stroke limit when the pressing roller 38 contacts the holding bobbin 32, and the cutter 3
Since there is a limit to the stroke in which the rotation of 7 moves forward across the traveling sheet material 31, it is easy to cause a cutting failure in the case of a sheet material having a large cutting resistance such as thick or hard paper and film.

Further, when the cutter arm 35 extending so as to straddle the holding bobbin 32 is rotated and the cutter 37 at the tip of the arm cuts through the traveling line of the sheet material 31 traveling, the cutter 37 is rotated. When the sheet material 31 is cut, the sheet material 3 is inclined toward the upstream side in the traveling direction.
Since the traveling tension of 1 acts as a repulsive force for reducing the cutting force of the cutter 37, a cutting failure is likely to occur in the case of the sheet material having the same large cutting resistance.

The object of the present invention made in view of the above is to prevent pressing of the sheet material onto the holding bobbin without causing the folded sheet end to be folded and folded back at the time of rewinding.・ The bonding bobbin is extremely less affected when it is bonded, and it is possible to perform reliable rewinding that does not cause defective cutting even in the case of sheet materials with large cutting resistance such as thick or hard paper and film. The present invention provides a rewinding and cutting device for a winding machine.

[0014]

SUMMARY OF THE INVENTION The present invention, which was conceived to achieve the above-mentioned object, provides a sheet material such as running paper and film, which is wound on one bobbin to a predetermined length and then the sheet material. In a rewinding / cutting device in a winder configured to cut and rewind the other bobbin to continuously wind the bobbin. A rewinding arm that is rotated so as to move toward and away from the backing bobbin and that extends to a downstream side in the traveling direction of the sheet material from the backing bobbin position when the rewinding bobbin comes close to the backing bobbin; One end is rotatably supported by a rotation shaft provided at the other end of the arm, and the other end extends upstream in the sheet material traveling direction, and the rotation shaft is supported at a position deviated from the sheet material traveling line except when the sheet material is cut. Stand by in a cantilever state and cut the sheet material A cutter arm that is rotated in the direction of the holding bobbin, and the cutter arm is attached to the other end of the cutter arm at substantially right angles to the arm over the entire width of the sheet material, and when the sheet material is cut, the cutter arm is attached. A cutter that cuts through the sheet material traveling line on the downstream side of the auxiliary bobbin by the rotation of, and is attached to the tip of the other end of the cutter arm in the direction of the auxiliary bobbin so as to overlap with the cutter and cut the sheet material. When the cutter arm rotates, the brush comes into contact with the holding bobbin so as to stroke the surface of the holding bobbin, and one end of the revolving arm is fixed to the rotation shaft and the other end is a cylinder rod. An air cylinder that pivots the cutter arm through the pivot shaft by pivoting a lever that is pivotally supported and a lever that is attached to the rewind arm and that is connected to the cylinder rod. And rewinding the cutting device in a winding machine, characterized in that it consists of a pressure cylinder.

[0015]

When the traveling sheet material is wound on one bobbin for a predetermined length and then the other bobbin is rewound and cut, the rewinding arm rotates to come close to the bobbin and rewind. When the air cylinder or hydraulic cylinder is actuated by the signal and the cutter arm is rotated via the lever connected to it, the cutter arm is located at the other end of the rewinding arm extended downstream from the holding bobbin in the running direction of the sheet material. At the same time as the cutter arm is rotated in the direction of the backup bobbin with the rotation axis as the fulcrum, the cutter at the tip crosses and cuts the sheet material running near the backup bobbin while inclining to the downstream side in the running direction, The tip brush, which is placed in the cutter bobbin direction and overlaps with the cutter, rotates in the same direction as the rotation direction of the backup bobbin and pushes the tip of the cut sheet material on the surface of the backup bobbin while pressing it and passing it. And by the replacement winding is completed.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a rewinding / cutting device in a winding machine of the present invention will be described below in detail with reference to the schematic configuration diagram shown in FIG.

Similar to the conventional case of FIG. 2, a sheet material 11 such as paper and film is running from left to right, and one bobbin of a winder (not shown) is provided on the right side and has a predetermined length. It shows a state in which the sheet material 11 is cut and wound around the other bobbin 12 after being wound up.

Reference numeral 13 denotes a rewinding arm, one end of which is pivotally mounted on a rotating shaft 14 which is rotatably supported by a frame (not shown), and is rotated by a driving device (not shown) with the rotating shaft 14 serving as a fulcrum at the time of rewinding. The other end is brought close to the backup bobbin 12 waiting for rewinding, and after rewinding, it is disengaged to the original position. The other end of the rewinding arm 13 is extended to the downstream side in the traveling direction of the sheet material 11 with respect to the backup bobbin 12 when the rewinding arm 13 approaches the backup bobbin 12 during rewinding.

Reference numeral 15 denotes a cutter arm, one end of which is rotatably attached to a rotary shaft 16 which is rotatably supported at the other end of the rewinding arm 13, and the other end of which is located upstream of the sheet material 11 in the traveling direction. Except when the stretched sheet material 11 is cut, the sheet material 11 stands by in a cantilevered state with the rotary shaft 16 as a fulcrum at a position deviated from the running line, and when the sheet material 11 is cut, the sheet material 11 is directed toward the bobbin 12 direction. It is rotatable and has a cutter arm 1 at the other end.
5, a cutter 17 is attached to the sheet material 11 so as to face the sheet material 11 at a substantially right angle, and when the sheet material 11 is cut, the sheet material 11 is rotated by a rotation axis 16 of the cutter arm 15 as a fulcrum. The traveling line is cut off on the downstream side of the backup bobbin 12.

Reference numeral 18 denotes a brush, which is attached to the other end of the cutter arm 15 so as to be superposed on the cutter 17 so as to face the holding bobbin 12 and cut to cut the sheet material 11.
By the rotation of 5, the surface of the auxiliary bobbin 12 is touched and passed so as to be stroked.

Reference numeral 20 denotes an air cylinder, the clevis on the rod end side is attached to a support shaft 21 provided on the rewinding arm 13, and the other end of a lever 22 having one end fixed to the rotating shaft 16 on the cylinder rod end side. It is rotatably attached to a pin 23 provided on the. Air is supplied to the air cylinder 20 from a pressurized air source (not shown) via a switching valve. The air cylinder 20 may be a hydraulic cylinder.

The rewinding and cutting operation performed by the rewinding and cutting device having the above-described structure will be described. When the bobbin (not shown) is wound by a predetermined length as in the conventional case, the rewinding arm 13 is first moved. Is rotated by a driving device (not shown) to approach the holding bobbin 12 in the rewinding position, and then the holding bobbin 12 is pre-dried so that the surface of the sheet material 11 synchronized with the traveling speed of the sheet material 11 is controlled by the controller of the winding machine. After driving to the speed, the cutter arm 15 is rotated by the rewinding signal via the lever 22 which operates the air cylinder 20 and connects with it.

Therefore, the rotary shaft 16 serving as the rotary fulcrum of the cutter arm 15 is located at the other end of the rewinding arm 13 extending to the downstream side of the holding bobbin 12 in the traveling direction of the sheet material 11. The cantilevered cutter arm 15 is rotated in the direction of the bobbin 12 and the cutter 17 at the front end is moved to the holding bobbin 1.
The sheet material 11 traveling in the vicinity of 2 is cut off while being inclined toward the downstream side in the traveling direction with respect to the traveling line, and at the same time, the tip is provided so as to be overlapped with the cutter 17 at the tip of the cutter arm 15 and directed toward the auxiliary bobbin 12 direction. The brush 18 is rotated in the same direction as the rotating bobbin 12 in the same direction as the brush 18, and the tip 24 of the cut sheet material 11 is pressed against the front surface of the backup bobbin 12 while being pressed against the surface of the bobbin 12 to come into contact therewith to complete the rewinding. To do.

In the rewinding / cutting operation performed in this way, the tip 24 of the cut sheet material 11 is pressed by the brush 18 so as not to bend over due to the stroking contact of the brush 18, and the brush is passed through the sheet material 11. Good pressing is performed with almost no effect on the winding drive control of the holding bobbin 12 by pressing 18 onto the holding bobbin 12, and the cutter 17 for cutting is located downstream of the running line of the sheet material 11 in the running direction. The traveling tension of the sheet material 11 acts to assist the cutting force of the cutter 17 by taking an inclined direction, and the rotation stroke of the cutter arm 15 is limited by the brush 18 that presses the sheet material 11 against the surface of the holding bobbin 12. Without fail, a reliable cut is made.

[0025]

EFFECT OF THE INVENTION According to the rewinding and cutting device of the winder of the present invention, the front end of the cut sheet is not turned up when the rewinding occurs, and the sheet material is not rolled into the back bobbin. It is possible to significantly reduce the influence on the drive of the auxiliary bobbin when pressing and adhering, and it is possible to achieve reliable cutting without causing defective cutting even in the case of sheet materials with large cutting resistance such as thick or hard paper and film. The effect of high rewinding is achieved.

[Brief description of drawings]

FIG. 1 is a schematic structural diagram showing an embodiment of a rewinding and cutting device in a winder of the present invention.

FIG. 2 is a schematic structural diagram showing a rewinding and cutting device in a conventional winding machine.

[Explanation of symbols]

 11 sheet material 12 holding bobbin 13 rewinding arm 14 rotating shaft 15 cutter arm 16 rotating shaft 17 cutter 18 brush 20 air cylinder 22 lever 38 presser roller

Claims (1)

(57) [Scope of utility model registration request] 1. A running sheet material such as paper and film is wound on one bobbin to a predetermined length, and then the sheet material is cut and rewound on the other holding bobbin and continuously wound. In the rewinding / cutting device of the winder configured so that the one end pivotally supported is pivoted so that the other end approaches / leaves the reserve bobbin and the reserve bobbin at the time of rewinding. And a rewinding arm that extends to the downstream side in the running direction of the sheet material when the rewinding bobbin position is approached, and one end of which is pivotally supported at the other end of the rewinding arm and the other end. Extends to the upstream side in the sheet material traveling direction, and stands by in a cantilever state with the rotating shaft as a fulcrum at a position deviated from the sheet material traveling line except when the sheet material is cut, and when the sheet material is cut, Same as a cutter arm that is rotated in the same direction. It is attached to the other end of the cutter arm substantially at right angles to the same arm over the entire width of the sheet material, and when the sheet material is cut, the sheet arm traveling line is provided on the downstream side of the holding bobbin by the rotation of the cutter arm. A cutter that cuts off and is attached to the tip of the other end of the cutter arm so as to face the cutter bobbin and to be attached to the cutter bobbin by turning the cutter arm when cutting the sheet material. A brush that strokes the surface of the holding bobbin,
By rotating a lever having one end fixed to a rotation shaft of the other end of the rewinding arm and a cylinder rod supported at the other end, and a lever attached to the rewinding arm and connected to the cylinder rod. An air-cylinder or a hydraulic cylinder that rotates the cutter arm via the rotation shaft, and a rewinding / cutting device in a winder.