JPH05104137A - Method for controlling coiling tightness of coil material in metallic foil coiling time - Google Patents

Abstract

PURPOSE:To control coiling material at every place from the coiling beginning to the coiling finish so as to be the required coiling tightness in the time coiling the metallic foil to the coiling reel. CONSTITUTION:While a metallic foil A is coiled to a coiling reel 2, the outer diameter D and the coiled length L of the coil material coiled to the reel 2 are measured, the air gap ratio (f) at the front surface neighboring position of the coil material C during coiling is operated from these values D, L and the thickness (t) of the metallic foil together. Then, by comparing the operated air gap ratio (f) to the object air gap ratio f0, the coiling condition is controlled so that the operated air gap ratio (f) approaches to the object air gap ratio f0.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coil material wound on a take-up reel when winding a metal foil such as an aluminum foil at all positions from the beginning to the end of winding. In the above, it relates to a method of controlling so as to obtain a predetermined winding hardness.

[0002]

2. Description of the Related Art For example, when an aluminum foil is wound on a take-up reel, if it is wound harder than necessary, the residual oil adhered to the foil surface will not sufficiently volatilize during the subsequent annealing treatment, resulting in poor oil removal. Will end up. On the contrary, if it is wound too loosely, the above-mentioned inconvenience does not occur, but the coil material is slackened, and the wound foils are rubbed against each other, and the foil surface is scratched. Such inconvenience is not limited to the aluminum foil, and the same applies to other metal foils. Therefore, when winding the metal foil, it is necessary to wind the coil material so that the coil material has a predetermined winding hardness.

Conventionally, when winding a metal foil on a take-up reel,
The operator controls the winding hardness to be within a predetermined range by appropriately setting the winding condition with reference to past data.

[0004]

However, in such a conventional winding control method, a large amount of data must be accumulated, and if such data is not accumulated, the operator must resort to the intuition of winding. In order to keep the hardness within a predetermined range, considerable skill is required and it is not always easy. For this reason, as described above, there are inconveniences such as poor oil removal after annealing, and scratches due to slack.

By the way, the porosity is used as an index of the winding hardness of the coil material. The porosity is measured by measuring the outer diameter, the inner diameter, the width and the weight of the coil material after the winding operation is completed.
It was calculated from these measured values. For this reason, the porosity and thus the winding hardness can only be known as a result after the completion of the winding operation, and are reflected in the annealing conditions in the subsequent annealing operations or in the winding conditions in the subsequent winding operations. It ’s just Therefore, if the initial setting of the winding condition is inappropriate, the coil material does not fall within the predetermined winding hardness range and becomes a defective product.

Even if the winding condition is corrected in the subsequent winding operation based on the result, the subsequent coil material does not always fall within the predetermined winding hardness range. Further, even if the proper winding condition is found after repeating several times in this way, not only the coil material used up to that point is wasted, but also the type of the metal foil to be wound, the foil thickness or the width is changed. However, there is an inconvenience that it is necessary to find out an appropriate winding condition by the same procedure.

The present invention has been made in view of the above-mentioned problems, and controls the coil material wound on the reel so that the coil material wound on the reel has a predetermined winding hardness while winding the metal foil on the reel. The purpose is to provide a method of doing.

[0008]

Therefore, the present invention is
The point is to calculate the porosity while winding the metal foil on the take-up reel, and adjust the winding conditions based on the result to ensure proper porosity at all points from the beginning to the end of the winding. A coil material having hardness is obtained.

That is, according to the present invention, while winding the metal foil on the take-up reel, the outer diameter D and the take-up length L of the coil material wound on the reel are measured, and these values D and L are measured. And the thickness t of the metal foil, the porosity f at the position near the surface of the coil material during winding is calculated, the calculated porosity f and the target porosity f0 are compared, and the calculated porosity f is the target porosity. The gist of the present invention is to control a winding hardness of a coil material when winding a metal foil, which is characterized in that the winding condition is controlled so as to approach f0.

The present invention will be described based on the flowchart shown in FIG.

First, the foil thickness t of the metal foil to be wound is measured in advance. Then, the winding operation is started according to a conventional method. Then, while performing the winding operation, the outer diameter D and the winding length L of the coil material wound around the winding reel are measured.

Then, the porosity of the coil material and thus the winding hardness are determined from the above values. Here, it is desirable that the porosity is always within a predetermined range at all points from the beginning of winding to the end of winding. Therefore, in the present invention, the porosity f at the position near the surface of the coil material is calculated. The porosity f is calculated from the coil diameter W, the coil length W, the coil width W, and the specific gravity ρ of the metal foil, in addition to the outer diameter D and the winding length L, according to the following equation (1). ..

[0013]

[Equation 1]

As is clear from the above equation, the porosity f is calculated from the values of the outer diameter D of the coil material, the winding length L and the foil thickness t.
It is calculated by the following equation (2).

[0015]

[Equation 2]

The calculation can be automatically performed by using a general-purpose so-called personal computer.

On the other hand, the target porosity f0 is preset according to the material of the metal foil to be wound, the foil thickness and other conditions. The target porosity f0 may be set so as to have a predetermined allowable range. Therefore, in the present invention, the "target porosity f0" is used in the meaning including a value having such a width. I shall.

Then, the comparison unit compares whether or not the calculated porosity f obtained by the above-mentioned calculation agrees with the desired target porosity f0. In addition, in the present invention, "match" means
It is used in the meaning including the case where the target porosity f0 has a predetermined width and the calculated porosity f falls within the range. As a result, if the calculated porosity f and the target porosity f0 match, the winding operation is continued under the winding conditions. Even in this case, the above calculation and comparison are continuously performed until the proper porosity is maintained until the end of winding.

On the other hand, when the calculated porosity f and the target porosity f0 do not match, the winding condition is changed so that the calculated porosity f matches the target porosity f0. That is, when the calculated porosity f is larger than the target porosity f0, the calculated porosity f is brought close to the target porosity f0 by, for example, increasing the pressing force of the touch roll and / or increasing the foil tension. To control the winding condition. Thereafter, the same calculation and comparison are repeated in the same manner as described above, and control is performed until the calculated porosity f and the target porosity f0 match. On the contrary, when the calculated porosity f is smaller than the target porosity f0, for example, the pressing force of the touch roll and / or the foil tension is adjusted so that the calculated porosity f approaches the target porosity f0. After that, similar control is repeated to match the calculated porosity f and the target porosity f0.

Even after the two coincide with each other in this way, the above calculation and comparison are continuously performed in order to maintain an appropriate porosity from the start of winding to the end of winding as described above.

The control of the winding conditions can be suitably performed by adjusting the pressing force of the touch roll and / or the foil tension as described above. The latter control can be suitably performed by adjusting the torque of the take-up reel drive motor. However, in the present invention, the winding condition may be controlled by a method other than the above. Further, it is the most desirable to perform such control automatically according to the result of comparison between the calculated porosity f and the target porosity f0 from the viewpoint of improving work efficiency. It is also possible to display the porosity f on the display and manually change the winding condition so that the calculated porosity f matches the target porosity f0 while observing the display.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below with reference to the embodiment shown in FIG.

As shown in the figure, the metal foil (A) wound on the rewind reel (not shown) is guided to the guide roll (1) and wound on the take-up reel (2). The winding length L is measured according to the number of rotations of the guide roll (1).

The take-up reel (2) is connected to a motor (3) which is a take-up reel driving source, and is driven by the take-up reel. A touch roll (4) is disposed in a pressed state on the coil material (C) wound around the take-up reel (2) so that the coil material (C) can be wound without slack.

Both the motor (3) and the touch roll (4) are adapted to be finely adjusted in rotational torque and pressing force by the control section (5).
Further, a non-contact sensor (6) for measuring the outer diameter of the coil material (C) is arranged outside the coil material (C) to continuously measure the outer diameter D of the coil material (C) during the winding operation. I'm supposed to get it.

Prior to starting the winding operation, the foil thickness t of the metal foil (A) is measured and a desired target porosity f0 is set.

Now, it is assumed that the winding operation for winding the metal foil (A) around the winding reel (2) is started using the above-described winding device.

Coil outer diameter D from the sensor (6),
Each value of the winding length L from the guide roll (1) and the measured foil thickness t is input to the calculation unit (7), where the calculation is performed based on the equation (2). The calculated porosity f obtained as a result of the calculation and the target porosity f0 are input to the comparison unit (8).

The comparison section (8) compares the two, and the comparison value S is input to the control section (5), and the control section (5) responds to the comparison value S by the touch roll (4).
Pressing force and / or winding reel drive motor (3)
Control the torque of. That is, when the calculated porosity f is larger than the target porosity f0, the pressing force of the touch roll (4) and / or the foil tension and thus the torque of the winding reel drive motor (3) are automatically increased. Control.
On the other hand, when the calculated porosity f is smaller than the target porosity f0, the pressing force of the touch roll (4) and / or the foil tension and thus the torque of the take-up reel drive motor (3) are controlled to be reduced. In this way, the calculated porosity f and the target porosity f0 are automatically controlled so as to coincide with each other.

After that, the same calculation and comparison are continuously performed, and when the calculated porosity f deviates from the target porosity f0 for some reason, the same control as described above is performed. As a result, it is possible to obtain the coil material (C) having the desired porosity and thus the winding hardness at all points from the beginning of winding to the end of winding.

[0031]

According to the present invention, when the metal foil is wound around the take-up reel in the above-described manner, the outer diameter and the winding length of the coil material are measured while being wound, and these values and the foil thickness are measured. From this, the porosity at the position near the surface of the coil material is calculated, the result is compared with the target porosity, and the winding condition is controlled so that the calculated porosity matches the target porosity. Therefore, it is possible to obtain the coil material having the desired porosity and thus the winding hardness at all points from the winding start to the winding end.

Therefore, inconveniences such as the deoiling of the coil material and the occurrence of scratches caused by the inadequate winding hardness in the conventional winding operation can be avoided in advance, and the waste of the coil material can be eliminated. In addition, manufacturing efficiency can be improved.

[Brief description of drawings]

FIG. 1 is a flowchart of a control method according to the present invention.

FIG. 2 is an explanatory diagram showing an example of an apparatus for carrying out the present invention.

[Explanation of symbols]

 2 ... Take-up reel A ... Metal foil C ... Coil material D ... Coil material outer diameter L ... Winding length t ... Metal foil thickness f ... Calculated porosity f0 ... Target porosity

Claims (1)

[Claims] 1. An outer diameter D and a winding length L of a coil material (C) wound on the reel (2) are measured while winding the metal foil (A) on a winding reel (2). Together with these values D,
The porosity f at the position near the surface of the coil material (C) during winding is calculated from L and the thickness t of the metal foil, the calculated porosity f and the target porosity f0 are compared, and the calculated porosity f
Is controlled to approach the target porosity f0, the winding hardness control method of the coil material at the time of winding the metal foil.