JPH04172119A - Method for preventing wrinkle and meandering of sheet steel roll transferring - Google Patents

Abstract

PURPOSE:To improve the productivity by preventing wrinkles with the recessed roll, and preventing the meandering by lowering the roll end part of meandering side, and elevating the opposite end part if the sheet meanders, by moving the sheet to the elevated side. CONSTITUTION:Wrinkles are prevented by giving the recessed crown to the roll and generating the tensile force in the sheet lateral direction. And if the bilateral balance is fallen down, the sheet 2 meanders easily. The roll chock 6, 6 to support the roll 1 is connected with the supporting frame 3 of U shape. An intermediate part of this supporting frame is pivotaly supported with the jig 4 for rotating through the bearing component 5. If the sheet meanders, the end part of the roll of the meandering side is lowered, and the opposite roll end part is elevated, the sheet moves to the elevated roll end part side, and the meandering of the sheet is prevented. Therefore, the productivity and the yield are improved, the quality of products can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION <Public Expenses for Industrial Use> The present invention relates to a method for preventing wrinkles and meandering in roll conveyance of thin plates, especially foils.

<Prior Art> As a conventional method for controlling the meandering of a plate during roll conveyance, there is a method in which the amount of meandering of the plate is directly measured and controlled.

For example, as shown in FIG. 2 (5), the camera 8 measures the meandering amount of the board 2, and the actuators 11 and 11 are given stroke instructions via the calculation section 9 and the operation section 10, and the roll 1 is moved into the board. There is a method that moves the board 2 in the width direction to prevent it from meandering. In this case, the board 2 will move toward the higher side of the roll 1 inclined in the board width direction.

Further, as shown in FIG. 2(c), there is also a method in which the amount of meandering of the board 2 is controlled by shifting the roll 1 in the board width direction using an actuator 11. The overall control method is the same as that shown in FIG. 2 (5), and is controlled using the actual measurement value of the meandering of the plate from the camera 8.

Note that 7 in Figure 2 is a motor for driving the roll.

<The invention tries to solve! In recent years, there has been an increasing need to transport foils of several tens of micrometers for purposes such as foil rolling.

These foils have very low bending rigidity, as shown in Figure 3 (5).
As shown in FIG.
As shown in 2), a method is adopted in which the roll 1 is made concave to prevent wrinkles.

However, in the above method, although the roll 1 can rotate, it is fixed horizontally within a plane perpendicular to the width direction of the board, and therefore, once the board starts meandering due to some disturbance, a difference will occur in the tensile force between the left and right sides. The meandering becomes larger and larger.

Therefore, meandering prevention control as described in the conventional method is required, but this has problems such as increased costs for equipment such as a meandering amount measuring device and a control calculation device, so a simple meandering prevention method is required. It is being

Means for Solving the Problems> The method for preventing wrinkles and meandering of the present invention for solving the problems described above is a method for transporting a thin sheet by roll, by providing a roll with a concave crown, thereby preventing wrinkles and meandering in the direction of the sheet end. This creates tensile force to prevent wrinkles, and when the board meanderes, the rolls are free to tilt in a plane perpendicular to the board width direction toward the side where the external force acting on the roll is greater in the board width direction. It is characterized by preventing the board from meandering by utilizing the restoring force of the board when it is tilted.

Effect> According to the method, wrinkles are prevented by the concave roll. When the plate meanderes, the end of the roll on the meandering side goes down and the end of the roll on the opposite side goes up. Then, the plate moves toward the raised end of the roll, that is, moves in a direction to prevent meandering of the plate, and the meandering of the plate is automatically prevented.

Embodiment> An embodiment of the present invention will be described below based on the accompanying drawings.

As shown in the first gap, the roll 1 for conveying the thin plate is tapered into a concave shape.

By forming the concave taper in this way, the speed of the roll becomes in the direction of the direction as shown in FIG. 10. the result,
An outward force is always applied to the plate 2 due to the roll 1, thereby preventing wrinkles from forming.

Furthermore, if the roll 1 is given a concave taper in this way, both ends of the plate 2 will always be pulled outward, and if the left and right balance is lost due to some disturbance, the plate 2 will easily meander. I will do it.

Therefore, in this embodiment, as shown in FIG. 1(f) and FIG. The intermediate part of the support frame 3 is connected to the bearing member 5.
The roll 1 is pivotally supported by a rotating jig 4 via a rotary jig 4, and has a structure in which the roll 1 can freely tilt in a plane perpendicular to the width direction of the sheet. In the figure, reference numeral 7 denotes a roll drive motor, which is connected to the roll chuck 6' via a universal joint.

Therefore, for example, the force of the tension acting on the plate 2 pushing the roll 1 is greater on the left side, and as a result, the roll 1 is tilted as shown in FIG. 1 (8).

At this time, the velocity vector of the roll l moves to the right side of the Ca-directional root plate 2, that is, to the side opposite to the side where the meandering occurs. In the end, by using this device, a restoring force is activated to return the meandering of the board 2 to its original state (this means that the meandering that has occurred can be canceled and the meandering of the board 2 can be automatically prevented).

On the other hand, if the plate 2 meandered to the right, the roll 1 would tilt to the right as shown in FIG. 1 (5).

At this time, as described above, a force is generated to move the plate 2 to the left, and the meandering that has occurred can be canceled.

It goes without saying that the present invention is not limited to the embodiments described above, and that various modifications can be made without departing from the gist of the present invention.

<Effects of the Invention> As explained above, according to the method of the present invention, wrinkles can be prevented and meandering can be easily and automatically prevented without using a complicated and expensive control device. Therefore, it is possible not only to improve productivity but also to improve yield and product quality.

[Brief explanation of drawings]

Fig. 1 (5) is a schematic perspective view of an apparatus for carrying out the method of the present invention, Fig. 1 (5) is a plan view thereof, and Fig. 1 (6) is the same (front view, Fig. 1 is a wrinkle prevention Figures 1 (6) and 1 (g) are explanatory diagrams showing the different operating states. Figures 2 (8) and 8 are diagrams showing different conventional meandering prevention controls. A schematic configuration diagram of each of the devices, FIG. 3 (5) is an explanatory diagram of wrinkle generation,
FIG. 3 (5) is an explanatory diagram of the occurrence of meandering. Also, in the drawings, 1 is a roll, 2 is a plate, 3 is a support frame,
4 is a rotating jig, and 5 is a bearing member. Figure 1 (B) (D) Figure 2 (B) 3rIIJ (A)

Claims (1)

[Claims] In the method of transporting thin plates by roll, a concave crown is provided on the roll to generate tensile force toward the edge of the plate to prevent wrinkles, and when the plate meanderes, the roll is moved in the width direction of the plate. A thin plate roll conveyance system characterized in that the roll is freely inclined in a plane perpendicular to the width direction of the plate to the side where the external force acting on it is larger, and the restoring force of the plate at the time of this inclination is used to prevent the plate from meandering. Method for preventing wrinkles and meandering.