JP2002193508A - Air turn roll - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air turn roll capable of preventing wrinkle and scratch of base material. SOLUTION: This air turn roll changing a traveling direction of long traveling base material is provided with an air supply opening for supplying air into a cavity of a turn roll and a air nozzle provided on circumference surface of the turn roll. Quantity of air blown out of the air nozzle is adjusted in a width direction of the turn roll. A partition dividing the cavity of inside of the turn roll in the width direction of the turn roll is provided and an independent air supply opening capable of adjusting quantity of air supply is provided in each cavity of the turn roll divided by the partition. A stabilizer supporting the traveling base material is provided at a gateway part of the turn roll on which the base material travels.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to relates to air turn rolls for converting the traveling direction of the elongated substrate travels.

[0002]

2. Description of the Related Art Conventionally, there is an air turn roll for changing the running direction of a running long base material. In this turn roll, the air supplied to the cavity inside the turn roll from the air supply port blows out to the base material from the air blowout hole provided on the peripheral surface of the turn roll, and the base material floats from the surface of the turn roll. The running direction of the base material is changed while the running is performed.

[0003]

In the conventional air turn roll 100 shown in FIG. 5 and FIG.
An air supply port 106 for supplying air to the internal cavity 109 of the turn roll 102 is provided at one or two positions of the turn roll 102, and the air supply hole 106 provided on the peripheral surface opposite to the air supply port 106 to the base material W. Air is blown out.

However, the air supplied to the cavity 109 has a small number of supply ports and is not evenly dispersed in the cavity 109, so that a difference in air pressure distribution occurs in the width direction of the turn roll 102, and The amount of air blown out to the material W cannot be adjusted.

[0005] Therefore, the amount of air blown to the base material W in the width direction of the turn roll 102 partially changes, and the base material W becomes uneven and flat at a uniform height with respect to the peripheral surface thereof. It becomes difficult to travel in a floating state, and there is a problem that wrinkles are generated on the base material W and scratches due to contact with a roll occur.

When the substrate W passes through the boundary 121 between the turn roll 102 and the entrance / exit portion of the roll, the substrate W
As a result, the running of the substrate W is disturbed by the change in the air pressure, and the substrate oscillates up and down or left and right (broken line 123), causing wrinkles and scratches due to contact with the roll.

According to the present invention, the amount of air blown to a substrate traveling along the circumference of a turn roll is adjusted in the width direction, and the substrate travels while maintaining a flat state at a uniform height on the circumference of the roll. It is another object of the present invention to provide an air turn roll capable of stabilizing the running of a base material at a roll entrance / exit portion and preventing wrinkles and scratches on the base material.

[0008]

[Means for Solving the Problems] of claim 1 invention is a air turn rolls for converting the traveling direction of the elongated substrate travels, an air supply port for supplying air to the cavity of the inner turn roll , comprising an air blowing holes provided in the turn roll peripheral surface, a air turn rolls, characterized in that it can be adjusted in the width direction of air exhaust-turn roll from the air blowing holes.

According to a second aspect of the present invention, the adjustment of the air blowing amount in the turn roll width direction is performed by providing a partition for dividing a cavity inside the turn roll in the turn roll width direction, and the turn roll divided by the partition is provided. 2. The air turn roll according to claim 1, wherein the air turn roll is provided by providing an independent air supply port capable of adjusting an air supply amount in each of the internal cavities.

A third aspect of the present invention is an air turn roll characterized in that a stabilizer for supporting the running base material is provided at an entrance / exit portion of the turn roll on which the base material runs.

[0011]

According to the air turn roll of the present invention, the amount of air blown to the base material traveling on the circumference of the turn roll can be adjusted in the width direction of the turn roll. It can run in a state where it floats flat at the height.

Further, by providing the stabilizer, it is possible to prevent the disturbance of the running of the substrate at the turn roll entrance section, a substrate can be run stably.

[0013]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view of an air turn roll 1 according to a first embodiment, FIG. 2 is a vertical and horizontal cross-sectional view thereof, and FIG. 3 is a horizontal cross-sectional view thereof. Then, the base material W runs.

In the drawing, reference numeral 2 denotes a turn roll, 3 denotes a support shaft for supporting the turn roll 2, 4 denotes a plurality of air blowing holes provided at intervals on the rear peripheral surface of the turn roll, 5 denotes an air delivery pipe, 6 Denotes an air supply port connected to the turn roll 2, and 7 denotes a pressure reducing valve 7 for adjusting the amount of supplied air.

The interior of the turn roll 2 is a cavity, and the cavity 9 is divided into three cavities 9a, 9b by partitions 8a, 8b.
9b and 9c.

In each of the cavities 9a, 9b, 9c, compressed air A branched from the air supply pipe 5 is provided with a pressure reducing valve 7a, 7b, provided in each of the air supply ports 6a, 6b, 6c.
7c, the air supply amount a is individually adjusted and sent.

Therefore, the amount of air blown out from the air blowout hole 4 can be adjusted for each cavity divided in the width direction of the turn roll 2, so that air can be blown out evenly in the width direction of the turn roll. The direction can be changed stepwise, the blowing amount at a specific position can be increased, or the direction can be stopped.

The amount of air blown out from each cavity is adjusted according to operating conditions such as the material and thickness of the base material W and the traveling speed, so that the base material W floats from the peripheral surface of the turn roll 2. Can be stably run while maintaining a uniform flat state, and the occurrence of wrinkles and scratches on the base material W can be prevented.

In the above embodiment, the case where the cavity 9 is divided into three parts is shown. However, if the number of divisions is increased, finer adjustment of the amount of air blowout becomes possible in the width direction of the turn roll.

FIG. 4 shows a turn roll 2 according to a second embodiment.
2 is a longitudinal sectional view of an air turn roll 20 provided with stabilizers 23a and 23b connected to entrances and exits 21a and 21b of the base material to the base 2.

In the air turn roll 20, the substrate W
The swing of the base material W before and after the turn roll entrance / exit due to the change in the air pressure applied to the base material W at the turn roll entrance / exit portions 21a and 21b can be suppressed.

As a result, the running stability of the substrate W can be improved, and the contact between the substrate W and the turn roll 22 can be prevented, thereby preventing the occurrence of abrasion.

The stabilizer 23 may be provided only on one side 21a or 21b of the turn roll entrance / exit portion, or a plurality of stabilizers may be provided intermittently at predetermined intervals in the width direction of the turn roll 22.

[0025]

As described above, according to the air turn roll of the present invention, the substrate on the periphery of the turn roll can be run while maintaining a flat floating state at a uniform height. This can prevent wrinkles and scratches from occurring. In addition, it is possible to prevent runout at the entrance and exit of the turn roll, improve running stability, and prevent occurrence of scratches.

[Brief description of the drawings]

FIG. 1 is a perspective view of an air turn roll according to a first embodiment of the present invention.

FIG. 2 is a longitudinal sectional view of the turn roll of FIG.

FIG. 3 is a cross-sectional view of the turn roll of FIG.

FIG. 4 is a longitudinal sectional view of an air turn roll according to a second embodiment of the present invention.

FIG. 5 is a perspective view of a conventional air turn roll.

FIG. 6 is a longitudinal sectional view of the turn roll of FIG.

[Explanation of symbols]

 1, 20 air turn roll 2, 22 turn roll 3, turn roll support shaft 4, 24 air blowout hole 5, air supply pipe 6, 6a, 6b, 6c air supply port 7 , 7a, 7b, 7c... Pressure reducing valve 8, 8a, 8b... Partition 9, 9a, 9b, 9c... ... Supply air a ... Pressure adjusted air

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Satoshi Ugawa 101 in Kawai-cho, Kawai-cho, Kitakatsuragi-gun, Nara 1 Within Hirano Tecseed Co., Ltd. (72) Satoru Wakabayashi 1 F-term in Hirano Techseed Co., Ltd. (reference) 3F104 AA00 GA06

Claims (3)

[Claims] 1. An air turn roll for changing the running direction of a running long substrate, an air supply port for supplying air to a cavity inside the turn roll, and an air blowout provided on a peripheral surface of the turn roll. An air turn roll comprising a hole, wherein an amount of air blown from the air blow hole can be adjusted in a width direction of the turn roll. 2. The method according to claim 1, wherein the air blowing amount is adjusted in the turn roll width direction by providing a partition that divides the cavity inside the turn roll in the turn roll width direction, and providing a partition inside the turn roll divided by the partition. air turn roll according to claim 1, characterized in that by providing a separate air supply port air supply amount can be adjusted. 3. The air turn roll according to claim 1, wherein a stabilizer for supporting the traveling base material is provided at an entrance / exit portion of the turn roll on which the base material travels.