JPH0756275Y2 - Touch roll device for center drive type sheet winding device - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention is a center drive system in which a sheet is wound by preventing the air from being trapped by pressing a touch roll against the surface of the sheet immediately after being wound. The present invention relates to a touch roll device in a die sheet winding device.

[Conventional technology]

In a conventional touch roll device, a touch roll is attached to the tip ends of a pair of arms that rotate about a fulcrum shaft, and the touch roll is pressed against the surface of the sheet immediately after winding. Touch pressure is determined only by its own weight.

However, depending on the type of the sheet to be wound, the thickness, etc., when it is necessary to adjust the winding hardness of the sheet by adjusting the touch pressure, in the touch roll device having the above-mentioned configuration , Can't handle.

On the other hand, as a technique for adjusting the touch pressure of a touch roll using an air cylinder, one disclosed in Japanese Patent Laid-Open No. 57-57156 is known.

However, this technology aims to make the winding shape of the winding product close to a perfect circle, and adds a moment in the direction away from the center of the winding shaft to the arm with the touch roll attached to the tip by the air cylinder, The touch roll touch pressure is reduced, and by using a free running clutch, etc., the touch roll is allowed to move in the direction away from the winding shaft, but not in the opposite direction. .

Therefore, in the part where the diameter of the product being wound is large, it is possible to prevent the entrapment of air by contact with the touch roll, but in the part where the diameter is small, a slight gap occurs with the touch roll. Therefore, there is a problem that air is involved.

[Problems to be solved by the device]

The present invention relates to a touch roll device mounted on a center drive type sheet winding device, in which the type of sheet to be wound,
By adjusting the touch pressure according to the thickness and the like, the winding hardness of the sheet is adjusted to improve the winding shape of the sheet.

[Means for Solving the Problems]

Means adopted by the present invention to solve the above problem is to press a touch roll mounted on the tip of a pair of arms onto a sheet immediately after winding, and wind the sheet around a winding shaft for driving rotation. In the center drive type sheet winding device configured as described above, it is possible to adjust the distance between each pair of arms, each arm being a pair of one arm, as an arm mounting member, and also adjust the distance between the pair of arms. Attach the touch roll to the tip of each pair of arms that is made possible and attached, and connect the touch pressure adjustment cylinders to the arms of each pair to adjust the touch pressure of the touch roll. , It is possible to adjust in both directions of increase and decrease compared to the case of its own weight.

[Function of device]

When the touch pressure adjusting cylinder is operated and a moment in the direction in which the pair of arms is pulled toward the winding shaft is applied to the pair of arms on which the touch roll is mounted, the touch pressure increases and the touch When a back pressure is applied to the pressure adjusting cylinder and a moment in the direction in which the pair of arms is pulled away from the winding shaft is applied to the pair of arms on which the touch roll is mounted, the touch pressure due to the weight of the touch roll is applied. Is diminished. In this way, the touch pressure of the touch roll can be adjusted in both directions of increase and decrease as compared with the case where it is due to its own weight, and this touch pressure is adjusted by adjusting the pressure of the working fluid supplied to the touch pressure adjustment cylinder. It can be adjusted freely.

Therefore, depending on the type and pressure of the sheet to be wound, the touch roll can be pressed against the sheet just after winding with the optimum touch pressure, and the sheet can be wound up. Good seat winding. Also,
It is also possible to change the touch pressure during winding by adjusting the pressure of the working fluid supplied to the touch pressure adjusting cylinder during winding.

Furthermore, a plurality of pairs of arms, which are one-to-one, are attached to the arm attachment member such that the distance between the arms can be adjusted, and the distance between the pair of arms is also adjustable. By changing the distance between the arms, you can use touch rolls with different lengths, so you can flexibly respond to changes in the cutting width of the sheet, and you can wind the sheet with optimal touch pressure. .

〔Example〕

A touch roll device according to the present invention will be described with reference to FIGS. The touch roll device according to the present invention is mounted on a center drive type sheet winding device.

The sheet winding device according to the present embodiment includes two winding shafts 1a and 1b that are arranged at a predetermined interval in the vertical direction. The winding shafts 1a and 1b are driven and rotated. The original sheet S ′ unwound from the original roll (not shown) is the intermediate roll 2
3 and 3, the cutting sheets S are cut to a set width by a large number of cutters 4, and the cut sheets S cut to the set width in the portion of the intermediate roll 5 are alternately branched and sent upward and downward. Each of the cut sheets S branched toward is guided by the intermediate rolls 10 and 20 and wound on the upper and lower winding shafts 1a and 1b, respectively.

A touch roll device T for pressing the cut sheet S immediately after being wound around the winding shafts 1a and 1b on each of the upper and lower winding portions.
Are provided respectively.

The details of the touch roll device T are shown in FIGS. 2 to 4, and since the upper and lower touch roll devices T have the same configuration, the lower one will be described.

Above the winding shaft 1b, a dovetail member 6 is attached to a horizontally fixed angle 7, and an arm mounting plate 8 having a dovetail groove 8a formed therein can be laterally moved to the dovetail member 6. And a fixed piece 11 is rotatably attached to the upper end of the arm mounting plate 8 through a pin 9 and the fixed piece 11 is tilted by a pressing bolt 13 equipped with a turning handle 12. When pressed against the surface, the arm mounting plate 8 is fixed to the dovetail member 6.

Inside each arm mounting plate 8 which is a one-to-one set,
Arms 15 are pivotally attached via fulcrum pins 14, and a touch roll 16 is rotatably attached to the tip of each arm 15.

A bracket 17 is attached to the side of each arm attachment plate 8, and the tip end of the main body 18 of the touch pressure adjusting air cylinder E is pivotally attached to the bracket 17 via a pin 19 to provide a touch pressure adjusting air cylinder. The tip of the E rod 21 is connected to the arm 15 via the in 22. In the figure
Reference numeral 23 indicates a paper tube.

Therefore, the interval between the plurality of pairs of arms 15 and the interval between the pair of arms 15 are determined by the width of the cutting sheet S, and the touch pressure adjusting air cylinder E is attached to each arm 15. Has been.

Then, as shown in FIG. 3, each touch roll device T is laterally moved and fixed to a portion of the winding shafts 1a and 1b corresponding to the winding position of the cut sheet S. That is, the interval between the pair of arms 15 and the interval between each pair of the pair of arms 15 are determined according to the width of the cut sheet S, and the touch roll 16 corresponding to the width of the cut sheet S is defined. Are attached to the tips of the pair of arms 15.

In this state, as shown in FIG. 2, while the touch roll 16 is pressed against the cut sheet S immediately after winding,
When the touch pressure adjusting air cylinder E is operated and a moment in the direction in which the arm 15 is pulled toward the winding shafts 1a and 1b is applied to the arm 15, the touch pressure adjusting air cylinder E is moved as described above. The touch pressure P of the touch roll 16 becomes large as compared with the case where the touch roll 16 is not used.
The touch roll 16 prevents air from being caught between the cut sheets S wound around the winding shafts 1a and 1b. Further, when the touch pressure adjusting air cylinder E is used as described above, the wound sheet is hard wound, as compared with the case where this is not used.

By adjusting the air pressure supplied to the touch pressure adjusting air cylinder E, the winding hardness of the cut sheet S can be adjusted, and the air pressure supplied to the touch pressure adjusting air cylinder E during winding of the cut sheet S can be adjusted. If changed, the touch pressure of the touch roll 16 can be changed during winding.

On the contrary, when the cutting sheet S is thin, a touch roll is used.
The touch pressure due to the weight of 16 is too large, and the winding shape of the cut sheet S may be deteriorated. In such a case, when a back pressure is applied to the touch pressure adjusting air cylinder E and a moment in a direction in which the arm 15 is separated from the winding shafts 1a and 1b is applied to the arm 15, the touch roll 16 moves. The touch pressure due to its own weight is reduced and reduced, and the cut sheet S can be wound with an ideal winding hardness.

Further, when the magnitude of the touch pressure due to the own weight of the touch roll 16 is optimum for the cut sheet S to be wound up, as shown by a three-dot chain line in FIG. 2, a touch pressure adjusting air cylinder. The cut sheet S may be wound in a non-use state in which the rod 21 of E is projected and the touch roll 16 is lifted upward.

Further, when the width of the cut sheet S is changed, the interval between the pair of arms is adjusted correspondingly, and the touch roll 16 corresponding to the width of the cut sheet S is attached to the tip end portion thereof.

[Effect of device]

In the touch roll device according to the present invention, a plurality of pairs of arms, which are one-to-one, can be used as arm mounting members and the distance between the arms can be adjusted, and the distance between the pair of arms can also be adjusted. Touch rolls are attached to the tip of each pair of arms that can be attached as much as possible, and a touch pressure adjusting cylinder is connected to each pair of arms to provide the touch. The touch pressure of the roll can be adjusted in both directions of increase and decrease compared to the case of its own weight, so the type of sheet to be wound,
The touch pressure of the touch roll can be freely adjusted according to the thickness, etc., and the sheet can be wound with the optimum winding hardness, and the distance between the pair of arms can be changed to change the length. By using the touch roll, it is possible to flexibly respond to changes in the cutting width of the sheet, and it is possible to wind the sheet with optimum touch pressure.

[Brief description of drawings]

FIG. 1 is a partial side view of a winding portion of a center drive type sheet winding device, and FIG. 2 is an enlarged side view of a state where a cut sheet S is being wound using a touch roll device T according to the present invention. FIG. 3 and FIG. 3 are partial front views, and FIG. 4 is a partially cutaway front view of a state in which the touch pressure adjusting air cylinder E and the arm 15 are attached to the arm attaching plate 8. The description of the reference numerals of the main parts constituting the present invention is as follows. E: Air cylinder for touch pressure adjustment (cylinder for touch pressure adjustment) S: Cut sheet, S ': Original sheet T: Touch roll device 1a, 1b: Winding shaft 6: Yes member (arm mounting member) 8: Arm Mounting plate 14: Support pin (support shaft of touch pressure adjustment cylinder) 15: Arm, 16: Touch roll

Claims (1)

[Scope of utility model registration request] 1. A center drive type sheet winding device having a structure in which a touch roll attached to the tip ends of a pair of arms is pressed against a sheet immediately after being wound and the sheet is wound around a winding shaft which is driven and rotated. , The plurality of pairs of arms, which are one-to-one, are attached to the arm mounting member with the distance between the respective arms being adjustable, and the distance between the pair of arms is also adjustable to be attached one-to-one. When a touch roll is attached to the tip of each pair of arms, and a touch pressure adjustment cylinder is connected to each pair of arms, the touch pressure of the touch roll depends on its own weight. A touch roll device in a center drive type sheet winding device, which is adjustable in both directions of increase and decrease compared to.