JPH11343053A - Continuous feeding device for sheet material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sheet dmaterial feeding device to uniformize a joint between new and old sheet material and perform smooth operation of a sheet material processing part. SOLUTION: When an amount of remaining sheet material on an old sheet material roll 8' is reduced to a value not more than a specified amount, the old sheet material roll 8' is arranged from a sheet material feeding position R to a roll exchange position R' and a new sheet material roll 8 is arranged from the roll exchange position R' to a sheet material feed position R. Thereafter, the intermediate part of the sheet material S' fed from the old sheet material roll 8' is adhered to the starting end of the sheet material S of the new sheet material roll 8, and the sheet material S' of the old sheet material roll 8' is cut in the direction of width between the new and old rolls 8 and 8'. Further, a pressure receiving roller 5 having a peripheral surface in which a cutter edge 6 is fitted, and the cutter edge 6 to press the sheet material S' from the old sheet material roll against the pressure receiving roller 5 for cutting are disposed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a continuous sheet feeding apparatus for continuously feeding a sheet-like sheet to a sheet processing unit such as a printing unit while sequentially connecting the roll-shaped sheets, and a rotary printing machine such as a gravure or offset printing machine. Applied to printing machines, laminators or coaters.

[0002]

2. Description of the Related Art When the remaining amount of sheet material of an old sheet material roll becomes less than a certain amount, the old sheet material roll is moved from a sheet supply position to a roll change position, and the new sheet material roll is moved from the roll change position. After being arranged at the sheet body supply position, respectively, the intermediate part of the sheet body supplied from the old sheet body roll is adhered to the sheet body start end of the new sheet body roll, and the cutter arranged between the new and old rolls There is a structure in which a blade is pressed against the sheet body of the old sheet body roll to cut the sheet body in the width direction (Japanese Utility Model Laid-Open No. 61-132355).

[0003]

In the prior art, when a sheet supplied from an old sheet roll is cut by a cutter blade, the cutter blade presses an intermediate portion of the sheet member at an initial stage, and thereafter, the cutting is performed. In the initial stage, the sheet body intermediate portion escapes by the pressing at the initial stage, and the cutting operation of the sheet body is not smooth because the cutting state of the sheet body is in a sloping shape, which hinders the continuous supply of the sheet body. cause.

The present invention has been made by focusing on the drawbacks of the conventional example.

[0005]

When the remaining amount of the sheet body of the old sheet body roll becomes less than a predetermined amount, the old sheet body roll is moved from the sheet body supply position to the roll change position, and the new sheet body roll is moved to the roll replacement position. After being arranged at the sheet supply position from the roll replacement position, the intermediate portion of the sheet supplied from the old sheet roll is adhered to the sheet body start end of the new sheet roll, and between the new and old rolls. In the sheet body continuous feeding device that cuts the sheet body of the old sheet body roll in the width direction, the sheet body from the old sheet body roll contacts and rotates between the new and old sheet body rolls, And a pressure receiving roller in which a cutter blade is fitted on the peripheral surface, and the cutter blade that presses and cuts the sheet body from the old sheet body roll on the pressure receiving roller. To.

[0006]

In the initial stage of cutting the sheet body by the cutter blade, the pressure receiving roller and the cutter blade temporarily hold the sheet body over the entire length in the width direction, and then the sheet body is moved in the width direction so that the cutter blade is fitted into the pressure receiving roller. Cut the entire length simultaneously.

[0007]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows an embodiment of a continuous sheet feeding apparatus according to the present invention. FIG. 1 is a schematic explanatory view showing a state in which old and new sheet rolls are moved, and FIG. FIG. 3 is a schematic explanatory view showing a state in which a sheet body from a body roll is brought into contact with the sheet body, FIG. 3 is a schematic explanatory view showing a state in which a sheet body from an old sheet body roll is brought into contact with a pressure receiving roller, and FIG. FIG. 4 is a schematic explanatory view of affection obtained by cutting the sheet body of FIG.

In the figure, 1 is a machine base, 2 is a turning shaft 3
The turret board is supported by the turret board 2
Pair of turret arms 2A, 2A arranged in opposite directions to each other
', New and old sheet rolls (rotated by driving means not shown) 8, 8' which are alternately moved and positioned at the sheet supply position R or the roll replacement position R 'are rotatably mounted on the shaft. It is supported.

The pair of turret arms 2A, 2 '
Another pair of turret arms 2 arranged at right angles to A
Guide rollers 4 and 4 'corresponding to the sheet rolls 3 and 3' are rotatably supported on the rollers B and 2'B. The pressure receiving rollers 5, 5 'are arranged so as to be biased toward the corresponding sheet rolls 3, 3', and the turret arms 2B, 2'B
Are rotatably supported by the pieces 2B 'and 2'B'.

The pressure receiving rollers 5, 5 'are provided with an infinite number of wires 5a on the shaft.
, 5'a are radially projected, and the linear bodies 5a, 5'a
... receives the pressure from the sheet body S ',
The cutter blade 6 after cutting the sheet member S 'is fitted between the elastically deformed linear members 5a, ..., 5'a to prevent the cutter blade 6 from being damaged, and in the supply direction of the sheet member S'. Is rotated by the contact at the time of the movement of the cutter blade, thereby preventing the cutter blade 6 from contacting only at a specific position on the peripheral surface.

The pressure receiving rollers 5, 5 'may be made of an elastic body having a smooth surface such as rubber.

Reference numeral 7 denotes a fixed wall located adjacent to the machine base 1. A guide roller 9 for guiding the sheet body toward the sheet processing section is provided on the fixed wall 7, and a connecting device is provided above the guide roller 9. A and a cutting device B are provided.

The connecting device A includes a first arm 11 which is rotated by a motor on a support shaft 10 mounted on the fixed wall 7 side.
And the tip of a rod 13a of a first cylinder 13 attached to the first arm 11 is attached to one end of a first rotating piece 12 pivotally attached to the first arm 11. The pressing roller 14 is pivotally connected to the other end of the first rotating piece 12 so as to be freely rotatable.

In the cutting device B, the second arm 15 is pivotally connected to the fixed wall 7 by a separate shaft 10 'so as to be concentric with the support shaft 10, and the second arm 15 is attached to the fixed wall 7 by the second arm 15. While the tip of the rod 16a of the assembled second cylinder 16 is attached, a turning support shaft 17 is provided on the tip end of the second arm 15, and the turning support shaft 17 is integrated with the turning support shaft 17. The first and second arm pieces 18 and 19 are provided so as to protrude, and the free end of the first arm piece 18 is attached to the tip of the rod 20 a of the third cylinder 20 attached to the second arm 15. On the other hand, at the tip of the second arm piece 19, the pressure receiving rollers 5, 5 are rotated.
The cutter blade 6 is provided so as to come in contact with and separate from the pivot shaft ′, and a pressing roller 21 that freely rotates with respect to the rotation support shaft 17 is pivotally supported on the rotation support shaft 17.

FIG. 1 shows the old sheet roll 8 '.
Detects that the remaining amount of the sheet body has fallen below a certain amount,
The turret board 2 is rotated (counterclockwise in the drawing) to rotate the turret 2 to the old sheet roll 8 'roll change position R', the new sheet roll 8 to the sheet supply position R, and to move them alternately. At this time, the pressure receiving roller 5 on the side of the new sheet roll 8 is disposed at a predetermined position, and the guide roller 4 guides the movement of the sheet S 'supplied from the old sheet roll 8'. Then, the old sheet roll 8 'is rotated by the driving device, and the supply of the sheet S' is performed smoothly.

Next, as shown in FIG. 2, the new sheet roll 8 existing at the sheet supply position R is rotated in the supply direction (clockwise in the drawing) by a driving device, and the first arm 11 is rotated. Then, the pressing roller 14 is brought close to the new sheet roll 8, and the pressing roller 14 is brought into contact with the sheet S ′ which is being supplied from the old sheet roll 8 ′, and is rotated.

Then, the second cylinder 16 is operated to rotate the second arm 15, and the pressing member 21 presses the sheet member S ′ so that the sheet member S ′ is pressed by the pressure receiving roller 5.
(FIG. 3). In this state, the first cylinder 13 is actuated to press the sheet member S ′ against the rotating new sheet member roll 8 with the pressing roller 14, and the sheet member S ′ is provided at the sheet member start end of the roll member 8. The old sheet roll 8 'adhered to the adhesive tape.
The sheet body S from the new sheet body roll 8 is sent out along with the supply sheet body S 'from the above, and at this time, the third cylinder 20 is operated to rotate the second arm piece 19, and the second arm The sheet S 'is instantaneously pinched and cut by the cutter blade 6 and the pressure receiving roller 5 provided on the piece 19 to complete the splicing.
The sheet body S is supplied from the new sheet body roll 8.

FIG. 22 shows a sensor for detecting the diameter of the new sheet roll 8.
The connection operation is smoothly performed by adjusting the same rotation speed as the supply (running) speed of the sheet body S '.

[0019]

The present invention has the configuration described above,
A continuous sheet feeding device that can cut the supply sheet body from the old sheet body roll side uniformly and reliably, so that the seam of the new and old sheet bodies is uniform and the operation of the sheet processing unit can be smoothly performed. Can be provided.

[Brief description of the drawings]

FIG. 1 is a schematic explanatory view showing a state in which a new and old sheet roll has been moved.

FIG. 2 is a schematic explanatory view showing a state in which a pressing roller is brought into contact with a sheet from an old sheet roll.

FIG. 3 is a schematic explanatory view showing a state in which a sheet body from an old sheet body roll is brought into contact with a pressure receiving roller.

FIG. 4 is a schematic explanatory view showing a state where a sheet body from an old sheet body roll is cut.

[Explanation of symbols]

 5 Pressure receiving roller 6 Cutter blade 8 New sheet roll 8 'Old sheet roll R Sheet supply position R' Roll replacement position S, S 'Sheet

Claims (1)

[Claims] When the remaining amount of the sheet body of the old sheet body roll becomes a predetermined amount or less, the old sheet body roll is moved from the sheet body supply position to the roll replacement position, and the new sheet body roll is moved from the roll replacement position. After being arranged at the sheet supply position, respectively, an intermediate portion of the sheet supplied from the old sheet roll is adhered to the sheet start of the new sheet roll, and the old sheet is interposed between the new and old rolls. In the continuous sheet feeding apparatus configured to cut a sheet body of a roll in a width direction, a sheet body from the old sheet body roll contacts and rotates between the new and old sheet body rolls, and has a peripheral surface. A pressure receiving roller into which a cutter blade is fitted, and the cutter blade that presses and cuts the sheet body from the old sheet body roll on the pressure receiving roller,
Sheet continuous feeder.