JP2016108072A - Wet treatment apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wet treatment apparatus having a tension control mechanism of a web which has a simple mechanism and does not require special measures such as water-proof specification.SOLUTION: A roll-to-roll system wet treatment apparatus comprises: an unwinding part for unwinding a web from a roll; a wet treatment part for treating the web; and a winding part for winding the web on a roll. A plurality of drive rolls are provided in the wet treatment part. Friction clutches for adjusting the torque and rotation frequency of each of the drive rolls and controlling the tension of the web are connected to the plurality of drive rolls.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a roll-to-roll wet processing apparatus for wet processing a web-like processing object such as a film or metal foil wound around a roll.

  In a web processing apparatus such as a film or a metal foil, when the path inside the processing apparatus becomes long, the tension of the web decreases as it moves away from the driving roll that transmits the driving force to the web. Lowering and slipping cause poor conveyance such as web meandering or slack.

  As a method of preventing the meandering and slack of the web, a technique for avoiding it by applying a driving force to a free roll separated from the driving roll is disclosed.

  For example, Patent Document 1 discloses a web conveying method and apparatus that applies a driving force to a free roll using an electromagnetic clutch. However, since electric power is supplied to and controlled by the electromagnetic clutch, it is necessary to make the electromagnetic clutch or the like waterproof and chemical resistant, which increases the cost of the apparatus.

Japanese Patent No. 2767932

  In view of the above problems, an object of the present invention is to provide a wet processing apparatus including a web tension control mechanism that has a simple mechanism and does not require special measures such as waterproof specifications.

As means for solving the above problems, the invention according to claim 1 is a roll-to-roll wet processing apparatus,
An unwinding section for unwinding the web from the roll;
A wet processing unit for processing the web;
A winding part for winding the web on a roll, and
The wet processing unit includes a plurality of driving rolls, and a friction clutch for controlling the tension of the driving rolls and controlling the tension of the web is connected to the plurality of driving rolls. A wet processing apparatus.

  According to a second aspect of the present invention, there is provided a friction plate provided on a motor side of a drive shaft connected to a motor for driving the drive roll in the friction clutch, and a power roll from the motor. A friction clutch provided with a friction plate provided on the sprocket side for transmitting to the motor, and means for pressing the friction plate provided on the motor side against the friction plate provided on the sprocket side. The wet processing apparatus according to claim 1.

  According to a third aspect of the present invention, the means for pressing either one of the friction plates against the other friction plate changes the position of a pressing plate that is a support plate movable along the axial direction of the drive shaft. 3. The wet treatment according to claim 2, wherein the force applied to the friction plate is adjusted by expanding and contracting a coil spring provided concentrically on the motor side of the drive shaft. Device.

  According to a fourth aspect of the present invention, the means for pressing one of the friction plates against the other friction plate has a coil spring (k1) concentrically mounted on the outer side of the cylindrical drive shaft 1, and the drive In a double coil spring having a drive shaft 2 inside the shaft 1 and a coil spring (k2) mounted concentrically between the drive shaft 1 and the drive shaft 2, the axial directions of the drive shafts 1 and 2 are independent of each other. The wet plate according to claim 2, wherein the force applied to the friction plate is adjusted by moving and fixing the pressing plate 1 and the pressing plate 2 provided in each coil spring. It is a processing device.

  The invention according to claim 5 is the wet processing apparatus according to claim 2, wherein the means for pressing the friction plate is a hydraulic cylinder.

  According to the wet processing apparatus provided with the web conveyance mechanism that enables the friction clutch of the present invention to be connected to the free roll of the wet processing section and to adjust the rotation speed thereof, the web tension is also reduced in the wet processing section. Does not occur, and conveyance failures such as meandering and slacking of the web do not occur.

Schematic explanatory drawing which shows an example of a structure of the wet processing apparatus of this invention. Schematic explanatory drawing which shows an example of the structure of the friction clutch which is a tension control mechanism of the web used with the wet processing apparatus of this invention, and its periphery. Schematic explanatory drawing which shows an example of a structure of the friction clutch used with the wet processing apparatus of this invention. Schematic explanatory drawing which shows an example of a structure of the friction clutch used with the wet processing apparatus of this invention. Schematic explanatory drawing which shows an example of a structure of the friction clutch used with the wet processing apparatus of this invention.

The wet processing apparatus of this invention is demonstrated using FIGS.
The present invention is a roll-to-roll wet processing apparatus, and includes an unwinding unit for unwinding a web, which is a long object to be processed wound on a roll, from an unwinding roll, and an unwound web A wet processing section for cleaning, developing, etching, resist stripping, draining, and other wet processing, and a winding section for winding the processed web on a winding roll are provided.

  The wet processing unit is provided with a plurality of drive rolls, and each drive roll is connected with a friction clutch for controlling the tension of the drive roll and controlling the tension of the web. The power from the motor as a power source is transmitted to the drive roll.

<Configuration of wet processing equipment and details of its processing>
FIG. 1 is a schematic explanatory diagram for explaining an example of the overall configuration of the wet processing apparatus according to the present invention, and shows the most basic configuration including an unwinding unit, a wet processing unit, and a winding unit. It is.

Each component is provided with various rolls such as an unwinding roll, a driving roll, a dancer roll, a free roll, and a winding roll. The unwinding roll and the free roll are rolls having no driving force, and the other rolls are driving rolls to which a controlled driving force is transmitted.

  First, the web unwound from the unwinding roll passes through the first free roll and reaches the next free roll. The drive roll is in contact with the free roll in a form that sandwiches the web, and gives the web a force to unwind the web from the unwind roll. In FIG. 1, this roll is shown as a drive roll. The drive system for the unwinding drive roll is a drive system different from the drive system for driving the drive roll of the wet processing unit.

  Next, the web passes through the dancer roll 1 and reaches a drive roll provided at a position closest to the wet processing section in the unwinding section. The dancer roll 1 is controlled by the dancer roll 1 control device and adjusts the web tension by moving its position. The drive roll belongs to the same drive system as the drive roll inside the wet processing unit, and its torque and rotation speed are controlled.

  Next, the web enters the wet processing section and reaches the first driving roll closest to the unwinding section in the previous stage in the wet processing section. At this stage, the web is in a position where it is not immersed in the liquid stored in the wet processing section.

  Next, the web reaches the second drive roll of the wet processing section. The second drive roll is provided at a position to be immersed in the liquid.

  The web then reaches the third drive roll. This drive roll is provided at a position where it is not immersed in the liquid, like the first drive roll. In this way, the web is processed by dipping in the liquid stored in the wet processing section and heads for the winding section.

  The web that has entered the winding unit first reaches a driving roll (not shown). This drive roll is controlled by the same drive system as the drive roll of the wet processing unit, and its torque and rotational speed are controlled.

  Next, it passes through a dancer roll, passes through the next free roll, passes through the next free roll, and then is wound on a take-up roll. As the web is wound up, the winding roll has its rotational speed so that the winding speed becomes the same as the speed of the fed web even if the radius of the winding position increases. Be controlled.

  The dancer roll 2 in the winding part is controlled by the dancer roll 2 control device, and adjusts the tension of the web by moving its position.

  As described above, in the wet processing apparatus of the present invention, the friction between the web and the roll is reduced by controlling the torque and the rotational speed of the driving roll of the wet processing unit so that the tension of the web does not decrease. It is possible to prevent the occurrence of conveyance failure such as meandering or slacking of the web that occurs due to becoming too much.

<Control of drive roll>
As shown in FIG. 2, the control of the torque and the rotational speed of the drive roll of the wet processing apparatus of the present invention will be described. In the wet processing apparatus of the present invention, the torque and rotational speed of the drive roll such as the wet processing unit are transmitted from the motor by connecting a drive shaft that transmits power from the motor that is a power source to the friction clutch. Torque and rotation speed can be controlled.

  Specifically, a drive shaft that transmits power from the motor for driving the drive roll is connected to a friction clutch, and power is transmitted to the sprocket for transmitting power from the motor to the drive roll via a chain or the like. introduce. At that time, by adjusting the pressing force between the two friction plates in the friction clutch, it is possible to control the rotational torque and the rotational speed of the drive roll. The two friction plates are a friction plate provided on the motor side of the drive shaft connected to the motor and a friction plate provided on the sprocket side for transmitting the power from the motor to the drive roll. By pressing one of the plates against the other friction plate, it is possible to control the torque and the rotational speed of the drive roll.

<About friction clutch>
The friction clutch used for controlling the torque and the rotational speed of the drive roll in the wet processing apparatus of the present invention will be described.
FIG. 3 is a schematic explanatory view showing an example of a friction clutch used in the wet processing apparatus of the present invention.

  This friction clutch has a coil spring mounted concentrically with the drive shaft on the motor side of the drive shaft 1, and the driving force from the motor as a power source can move along the axial direction of the drive shaft 1. By changing the position of the push plate 1 that is a support plate, the force applied to the friction plate on the motor side of the drive shaft 1 is adjusted by the coil spring, and the torque and the number of rotations transmitted from the motor to the friction plate on the sprocket side are adjusted. It is possible to control. When the pressing plate 1 is brought closer to the sprocket side along the drive shaft 1, the force for pressing the friction plate on the motor side against the friction plate on the sprocket side is increased by the coil spring (shown as spring (k1) in FIG. 3). Since the slip between the friction plates is reduced, the torque and the number of rotations transmitted from the motor to the sprocket are increased. Conversely, when the push plate 1 is moved away from the sprocket, the torque is reduced.

FIG. 4 is a schematic explanatory view showing an example of another friction clutch.
This is a double coil spring in which a coil spring (k1) is concentrically mounted on the outer side of the cylindrical drive shaft 1 and a coil spring (k2) concentrically mounted on the drive shaft 2 is disposed on the inner side. In this friction clutch, the pressing plate 1 and the pressing plate 2 provided in each coil spring can be moved and fixed independently along the axial directions of the drive shafts 1 and 2, respectively. However, k1 and k2 are spring constants of the respective coil springs.

  According to such a friction clutch, for example, if k2 is 1/10 of k1, the force applied to the friction plate is set by a coil spring having a spring constant of k1, and further applied by a coil spring having a spring constant of k2. Although the force can be superimposed, since the resolution at which the force can be set can be reduced to 1/10, there is a merit that the torque and rotation speed of the driving roll can be set more finely.

  FIG. 5 shows a hydraulic cylinder as a means for pressing the friction plate. The force of the hydraulic cylinder is controlled by controlling the hydraulic pressure supplied thereto, and the degree of freedom for controlling the torque and the rotational speed of the drive roll can be increased as compared with a friction clutch using a coil spring. In the friction clutch using a coil spring, the torque and rotation speed of the drive roll are controlled by manually adjusting the position of the push plate of the friction clutch, whereas in the friction clutch using a hydraulic cylinder, the hydraulic cylinder It is possible to automate the operation by using a device for controlling the hydraulic pressure supplied to the motor.

  As described above, the wet processing apparatus according to the present invention is a conventional roll that uses a friction clutch connected to each roll by changing the roll of the wet processing section, which was a free roll, to a drive roll, and further connecting each roll. By adjusting the torque and the rotation speed so that the tension of the web does not decrease too much, it becomes possible to prevent the occurrence of poor conveyance such as meandering and slacking of the web.

Claims (5)

A roll-to-roll wet processing apparatus,
An unwinding section for unwinding the web from the roll;
A wet processing unit for processing the web;
A winding part for winding the web on a roll, and
The wet processing unit includes a plurality of driving rolls, and a friction clutch for controlling the tension of the driving rolls and controlling the tension of the web is connected to the plurality of driving rolls. A wet processing apparatus.   Inside the friction clutch, a friction plate provided on the motor side of a drive shaft connected to a motor for driving the drive roll, and a friction provided on the sprocket side for transmitting power from the motor to the drive roll. 2. The wet processing apparatus according to claim 1, further comprising a friction clutch including a plate and means for pressing a friction plate provided on the motor side against a friction plate provided on the sprocket side.   The means for pressing either one of the friction plates against the other friction plate changes the position of the pressing plate, which is a support plate movable along the axial direction of the drive shaft, thereby concentric to the motor side of the drive shaft. The wet processing apparatus according to claim 2, wherein the force applied to the friction plate is adjusted by expanding and contracting a coil spring mounted in a shape.   The means for pressing one of the friction plates against the other friction plate has a coil spring (k1) mounted concentrically on the outside of the cylindrical drive shaft 1, and comprises a drive shaft 2 on the inside of the drive shaft 1. In the double coil spring in which the coil spring (k2) mounted concentrically between the drive shaft 1 and the drive shaft 2 is disposed, each coil spring is provided along the axial direction of the drive shafts 1 and 2 independently. The wet processing apparatus according to claim 2, wherein the force applied to the friction plate is adjusted by moving and fixing the pressing plate 1 and the pressing plate 2.   The wet processing apparatus according to claim 2, wherein the means for pressing the friction plate is a hydraulic cylinder.

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