JPS60106620A - Controlling device of shape of winding of strip material - Google Patents

Abstract

PURPOSE:To wind and rewind a strip correctly by providing a load detector in the lower part of both ends of a pinch roll and correcting distribution of tension between the pinch roll and a mandrel basing on the difference of load of the tension. CONSTITUTION:The strip is taken up held between pinch rolls. The pinch rolls are thrusted by a thrusting cylinder 6 at pressure set by a pressure controller 5, and hold the strip. The load applied vertically to the pinch rolls is detected by a load meter 7 attached to the pinch rolls, and load due to pinch roll thrusting pressure is subtracted from the detected load by a compensator 8, and the difference between both ends of load signal 9 due to winding tension is inputted to a tension distribution controller 10. A signal that corrects thrusting pressure of the pinch rolls is outputted by the controller 10 to a pinch roll pressure controller 5 to optimize the distribution of tension in the direction of width.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of the Invention] This invention relates to shape control of a winding device for winding or unwinding a strip.

[Prior art]

FIG. 1 shows an example of a winding device.

The strip (1) is fed between pinch rolls (2) and wound around a mandrel (8). Pinch roll here (
2) and the mandrel (8) create tension in the strip between them in order to wind the strip into a coil. Next, the pinch roll (2) is shown in Figure 2.
Although it is cylindrical in shape, generally a crown-shaped one is used in which the diameter at the center is slightly larger than at the ends of the roll. Also, the strip (1) is generally slightly thicker at the center than at the edges. If the pinching pressure at each end of the pinch rolls (2) pinching the strip (1) changes, the pinch rolls (2) will change. moves in the width direction of the strip (1). For example, if the clamping pressure at the right end increases, the point of action moves to the right. If this point of action deviates from the optimal position for winding, the winding tension will become unbalanced in the width direction of the strip (1), and the winding shape will not be adversely affected.

[Summary of the invention]

An object of the present invention is to provide a winding shape control device that improves the winding shape by making the tension distribution in the width direction more suitable when winding a strip as described above.

[Embodiments of the invention]

An example of the present invention is shown in FIG. 6 and will be described below.

The strip (1) is pinched by pinch rolls (2) and wound up. The pinch roll (2) is pressed by the pressing cylinder (6) with the pressure established by the pressure controller (5) to pinch the strip. The load meter (7) installed on the pinch roll (2) detects the load applied vertically to the pinch roll, and the load due to the pinch roll pressing pressure by the compensator (8) is subtracted from the detected load to generate a load signal based on the winding tension. (9
) is input to the tension distribution controller αO). The tension distribution controller α0) sends a signal to the pinch roll pressure controller to correct the pressing pressure of the pinch roll so as to optimize the tension distribution in the width direction. Output to (5). In addition, in the above embodiment, the pressing pressure of the pinch roll was changed to change the position of the application point of the winding tension on the pinch roll, but the respective gap values may be changed using gap adjusters at both ends of the pinch roll. A device for moving the positions of both ends of the lower pinch roll may be provided to move the roll ends of the lower pinch roll up and down and back and forth.

〔Effect of the invention〕

As described above, according to the present invention, the load detection amount is provided at the bottom of both ends of the pinch roll, and the tension distribution between the pinch roll and the mandrel is corrected based on the load difference corresponding to the tension, so that the strip can be wound accurately. Can be taken and rewound.

[Brief explanation of drawings]

1 and 2 are block diagrams and explanatory diagrams of a conventional winding control device, and FIG. 3 is a block diagram showing an embodiment of the present invention. (1) Strip (2) Pinch roll (8)
・゛・Mandrel (5 doors・Pressure controller (6) *・Press cylinder <7)・Shell load meter (8)・・Compensator (9)・No. load signal (9))・φ tension distribution controller substitute Masuo Iwa'≦+, 1 j'; T+ ・j'S2 j,', I'j Figure 3 ζ

Claims (1)

[Claims] A winding control device for winding and unwinding a strip material is provided with a detector that detects the load at both ends of the strip being wound up by the pinch roll, and a sensor for feeding the strip to the winding machine based on the difference in the load. 1. A winding control device for a strip material, comprising a controller that controls tension distribution in the width direction of the strip by changing the positions of both ends and the pressure at both ends of a pinch roll that pinches the strip.