JPH0130443Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a pressing force control device for an ironing roller used in a winding coil portion of equipment for rolling metal foil such as aluminum foil.

(Prior art) Conventionally, for example, in the case of aluminum foil rolling, an ironing roller is used to press the winding coil in order to prevent wrinkles from occurring during winding of the aluminum foil and to stabilize the state of the aluminum foil during winding. is used. This ironing roller is supported by an air cylinder through appropriate parallelism adjusting screws at both ends of the shaft, so that if sheet flow occurs in the aluminum foil during rolling, the operator can visually determine the degree of sheet flow. How to adjust the ironing roller parallelism adjustment screw.

How to adjust the air pressure balance between both cylinders.

Implementing one of the following methods.

(Problems to be Solved by the Invention) Since all of the above methods are performed manually based on visual judgment, they have the problem of lack of quick response and low accuracy.

Furthermore, method (i) has the problem that if the parallelism is shifted too much, it will have a negative effect on rolling in the subsequent pass.

The present invention was developed in view of the above-mentioned conventional problems, and its purpose is to prevent the pressing force of the ironing roller to prevent the winding wrinkles of the winding coil and the sheet flow that causes sheet breakage. The purpose of this invention is to provide a control device.

(Structure of the invention) In order to achieve the above object, the invention provides a connection between a rolling mill and an ironing roller whose shaft ends on the working side and the driving side are separately supported by fluid cylinders via appropriate bearing members. A shape detector is installed to detect the tension at each position in the width direction of the rolled metal foil, and the signal from this shape detector is linearly regressed to approximate the tension distribution in the width direction of the metal foil. A regression analyzer that calculates a straight line, an output calculator that calculates the output necessary to adjust the fluid pressure of the fluid cylinder from the distribution of this straight line, and outputs it as an electrical signal, and an electric signal from this output calculator. Each electro-pneumatic transducer on the work side and drive side converts the signal into a fluid pressure signal, and the fluid pressure signal from the electro-pneumatic converter is amplified to separately set a predetermined pressure to the fluid cylinders on the work side and drive side. The system consists of pneumatic amplifiers on the working side and the driving side, which supply the same fluid.

(Example) Fig. 1 shows an aluminum foil rolling machine equipped with an ironing roller pressing force control device 1 according to the present invention, in which a pair of upper and lower work rollers are supported on the back by a back-up roller 2 of a four-high rolling mill. The aluminum foil 4 rolled by Step 3 is guided by a shape detection roller 5, which is a component of the control device 1, and wound onto a spool 6. Then, the winding coil 9 on the spool 6 is pressed by the ironing roller 8 whose shaft ends on the work side and the drive side are supported by air cylinders 7a, 7a, and the air pressure is adjusted appropriately by the control device 1. to keep it at an appropriate value.

That is, as shown in FIG. 2, this control device 1 includes a regression analyzer 1 in addition to the shape detection roller 5.
0, output calculator 11, comparators 12a, 12b provided separately for the work side and drive side, electropneumatic converters 13a, 1
3b, pneumatic amplifiers 14a, 14b, and pneumatic heads 15a, 15b. Among these, a large number of shape sensors 16 are arranged in parallel in the axial direction on the surface of the shape detection roller 5.
Tension T at each position in the width direction (x-axis direction) of
(x) (linearly, component force t(x) of T(x); see FIG. 3).

Then, the signal from the shape detection roller 5 is linearly regressed by a regression analyzer 10 to calculate a straight line that approximates the tension distribution of the aluminum foil 4. That is, the tension t(x) is taken in the y-axis direction, and the central part of the shape detection roller 5 is set as x=0, and a straight line y=kx is obtained, and further, the output calculator 11 calculates the following:
Based on the positive or negative sign of the gradient k of the straight line, it is determined whether the air pressure of the air cylinders 7a, 7b on the working side or the driving side should be increased, and the electric output P corresponding to the control amount is determined from the magnitude of the absolute value |k|. is calculated and an electrical signal is output to either the previously determined working side or driving side.

Then, on each side of the working side and the driving side,
The electric signals passed through the comparators 12a and 12b are converted into air signals by electropneumatic converters 13a and 13b. Furthermore, since the signals that can be handled by the electro-pneumatic converters 13a and 13b are limited to those with low output, these air signals are further amplified by the pneumatic amplifiers 14a and 14b, and the amplified air is sent to the air cylinder 7.
a, 7b, and by increasing the air pressure, the winding coil 9 of the ironing roller 8 is
The pressing force against is adjusted.

The pneumatic heads 15a and 15b measure whether or not the amplified air pressure has reached a predetermined value, and if it has not reached the predetermined value, an electric signal corresponding to the air pressure adjustment amount is sent to the comparator 12a. , 12b, and adjust the electrical signals input to the electro-pneumatic converters 13a, 13b to maintain the pressing force on both sides of the ironing roller 8 at an appropriate value.

Note that in the above embodiment, the pneumatic amplifiers 14a, 14
Although the feedback circuit 17a, 17b including the pneumatic heads 15a, 15b and reaching the comparators 12a, 12b from the output side of the pneumatic pump b is shown, the present invention is not limited to this.
17b may be omitted.

(Effect of the invention) As is clear from the above explanation, according to the invention, the output signal from the shape detector is linearly regressed, and the air pressure of the air cylinders on the work side and the drive side is adjusted based on the public distribution. I am trying to adjust it. For this reason,
The pressing force of the ironing roller against the metal foil can be maintained at an appropriate value on the working side and the driving side, preventing wrinkles and sheet breakage caused by sheet flow, and improving yield and quality.

In addition, since the sheet flow can be easily corrected, the rolling speed can be increased and productivity can be increased.

[Brief explanation of the drawing]

Figure 1 is a schematic equipment configuration diagram of an aluminum foil rolling machine equipped with a pressing force control device according to the present invention, Figure 2 is a block diagram of pressing force control, and Figure 3 is an explanatory diagram showing the tension state of aluminum foil. be. 1...Press force control device, 4...Aluminum foil, 5...
...Shape detection roller, 7a, 7b...Air cylinder, 8...Ironing roller, 10...Regression analyzer, 11...Output calculator, 13a, 13b...
Electropneumatic converter, 14a, 14b...pneumatic amplifier, 1
6...Shape sensor.

Claims (1)

[Scope of utility model registration request] The tension at each position in the width direction of the rolled metal foil is controlled between the rolling mill and the ironing roller, whose shaft ends on the work side and the drive side are supported separately by fluid cylinders via suitable bearing members. A shape detector installed to enable detection, a regression analyzer that linearly regresses the signal from the shape detector to calculate a straight line that approximates the tension distribution in the width direction of the metal foil, and a regression analyzer that calculates a straight line that approximates the tension distribution in the width direction of the metal foil. An output calculator that calculates the output necessary to adjust the fluid pressure of the machine and outputs it as an electrical signal, and an electro-pneumatic converter on the work side and drive side that converts the electrical signal from this output calculator into a fluid pressure signal. and pneumatic amplifiers on the working side and the driving side that amplify the fluid pressure signal from the electro-pneumatic converter and separately supply fluid at a predetermined pressure to the fluid cylinders on the working side and the driving side. A pressing force control device for an ironing roller, characterized by the following.