JPH01313111A - Method for measuring shape of rolled foil or the like wound on winding reel - Google Patents

Abstract

PURPOSE:To improve the accuracy of shape measurement by hugging a rewound rolled foil, etc. on a shape measuring roll with a constant hugging angle and then performing measurement in a stationary condition by fixing the foil by a fixing roll. CONSTITUTION:A shape measuring roll 4 and a guide roll 5 are installed on the outlet side of a rolling mill 3 and a pair of upper and lower fixing rolls 6,6 are also installed. After rolling, a rolled foil 2 wound on a winding reel 1 is rewound and is introduced between the rolls 5,4, and is fixed between the rolls 6,6 as if the foil 2 hugs the roll 4. A shape of the foil 2 is measured at a constant hugging angle of theta on the roll 4. A shape after deformation by winding is accurately measured because measurement is performed by rewinding a once wound foil. The accuracy of shape measurement for rolled foil, etc. is improved because measurement is performed in a stationary condition and with a constant hugging angle of theta independent of a diameter of the reel 1.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a method for measuring the shape of rolled foil or rolled thin plate wound on a take-up reel.

In this specification, the term "rolled foil, etc." is used to include rolled thin plates.

2. Description of the Related Art Conventionally, the shape (flatness) of rolled foil, etc. has been measured by measuring the shape immediately after rolling with a shape measuring device such as a shape sensor roll installed on the exit side of a rolling mill.

Problems to be Solved by the Invention However, when the rolled foil, etc. is subjected to the next process, such as a slitter or separator, based on the above measurement results,
In some cases, it was not possible to obtain the desired product. When we considered the cause of this, we found that the shape of the rolled foil etc. changes when it is wound on the take-up reel, and the shape differs from the shape before winding.In other words, the measurement results using the shape measuring instrument mentioned above are It has been found that this does not accurately represent the shape after winding onto the take-up reel.

This error tends to be particularly large at the end of the winding. Therefore, in order to perform appropriate quality control in the next process or to perform rolling control that predicts shape changes in the subsequent rolling process, the shape of the rolled foil, etc. in the state wound on the take-up reel, etc. It is necessary to understand accurately.

This invention has been made in view of the above-mentioned problems, and provides a method for accurately measuring the shape of rolled foil, etc., wound around a take-up reel, especially the shape of the end of the roll, where the shape changes greatly. The purpose is to provide the following.

As a means for solving the problem, the measuring method according to the present invention is capable of determining D1 in a non-rotating state of a rolled foil, etc. that has been rewound from a take-up reel and is placed adjacent to the rolled foil through a guide roll. The sample is guided to a shape measuring roll, held by the roll at a fixed holding angle θ, and then guided to a fixing roll and fixed by the roll, so that the shape can be measured by the measuring roll while in a stationary state. This is what I did.

As the shape measuring roll and guide roll, a shape measuring roll installed on the outlet side of the rolling mill and a guide roll placed adjacent thereto are used to measure the shape of the rolled foil immediately after rolling. It's okay.

The rolled foil or the like unwound from the take-up reel is first guided via a guide roll to a shape measuring roll disposed adjacent thereto. It is necessary to use a roll for measurement that can be measured in a non-rotating state. This is because if the measurement is performed in a stationary state, there will be no slippage between the foil and the rolled foil to be measured, making it possible to measure the shape more accurately. The guide roll acts to maintain the holding angle of the rolled foil, etc. wound around the take-up reel at a constant value with respect to the measuring roll, regardless of the diameter thereof, and to adjust the tension to a predetermined value. .

Then, after being held by the measuring roll at a predetermined holding angle θ, it is guided to a fixing roll and fixed by the roll, so that the shape n1 is fixed by the n1 fixing roll in a stationary state. The reason why the rolled foil etc. guided by the measuring roll is fixed by the fixing roll is that the rolled foil etc. can be fixed to the container without causing wrinkles. As the fixed roll, a rotating roll with a pair of upper and lower stopping functions may be used, or
A rotating roll and a pressing piece or the like for pressing and fixing the rolled foil or the like may be used. Further, it is desirable that the fixing roll is placed at a position where the holding angle of the rolled foil or the like with respect to the measuring roll is as large as possible.

The n1 constant method according to the present invention is preferably employed mainly when measuring the winding end side of rolled foil or the like. Normally, the shape immediately after rolling is measured using a shape measuring roll installed on the exit side of the rolling mill, and the change in shape due to winding on the take-up reel is relatively small at the start of rolling. It gradually increases in size as it approaches the final end. Therefore, by determining n1 only on the winding end side and comparing the measured data with the data obtained from the shape measuring roll installed on the exit side of the rolling mill, the correlation between both data can be found. This can be used as a reference for quality control in the next process and control in the subsequent rolling process.

Example The present invention will be explained in detail below.

Figure 1 shows the shape (flatness) of the rolled aluminum foil (2) wound around the take-up reel (1) using the shape measuring roll (4) installed on the exit side of the rolling mill (3). This shows an apparatus that uses a guide roll (5) for measurement.

The aluminum foil rolled by the rolling mill (3) is
Shape measuring roll (
4) and the take-up reel (1) via the guide roll (5)
During this winding, the measuring roll (
4), the device of this example uses the shape measuring roll (4) and the guide roll (4).
5) is used as is, and a pair of upper and lower fixing rolls (6) are arranged at the upper part of the take-up reel (1) side.

Then, using the above-mentioned rolling mill (3), two aluminum alloy foils (IN30-H) were stacked and rolled so that each aluminum foil had a width of 1500 m and a thickness of 7 μm. It was wound around a take-up reel (1) while measuring its shape with a measuring roll (4). The diameter at the end of the winding was 1300 m.

Next, as shown by the solid line in FIG. 1, the take-up reel (1)
The rolled aluminum foil (2) wound around is unwound and guided from the upper side of the guide roll (5) between the roll (5) and the measuring roll (4), and the measuring roll (4) is The rolled aluminum foil (
2) The shape (flatness) of the winding end side was measured.

The measurement results are shown in FIG. 2 in order to compare the shapes before and after winding on the winding end side measured as described above. In addition, in the same figure, 10μm/m is 11-un
Shown as it.

From this result, immediately after rolling (before winding), the elongation at both ends in the width direction is large, but after winding, the elongation at the middle part and both ends in the width direction is large. , it is not possible to accurately grasp the shape after winding by just measuring immediately after rolling, but the method according to the present invention makes it possible to grasp the accurate shape for the first time, which is effective for quality control in the next process, etc. I was able to confirm that.

Effects of the Invention As mentioned above, the method for measuring the shape of rolled foil, etc. according to the present invention does not measure the shape immediately after rolling using a shape measuring roll installed on the exit side of a rolling mill, as in the conventional method.
- Since the measurement is performed by unwinding the material that has been wound on the take-up reel, it is possible to accurately grasp the shape after the change due to the winding. Therefore, quality control in the next step can be appropriately performed, and in the subsequent rolling step, rolling control can be performed that predicts changes in shape after wrapping.

In addition, since the rolled foil, etc. unwound from the take-up reel is guided via a guide roll to the shape measuring roll placed adjacent to it, it is always constant regardless of the diameter of the take-up reel. In addition to being able to maintain a holding angle of θ and easily obtaining a predetermined tension, the rolled foil can be held onto the shape measuring roll at a constant holding angle θ, so that it can be held accurately. It may be possible to measure two shapes.

In addition, since the rolled foil and the like are guided to a fixing roll and fixed by the roll, setting can be easily carried out without causing wrinkles.

Furthermore, as mentioned above, since the shape is measured using the measuring roll that can be measured in a stationary state and a non-rotating state, slipping may occur between the roll and the constant rolling foil, etc. Therefore, accurate shape measurement is possible.

As described in claim 2, the shape measuring roll and the guide roll are arranged adjacent to a shape measuring roll installed on the outlet side of the rolling mill in order to measure the shape of the rolled foil, etc. immediately after rolling. If a fixed guide roll is used, the shape can be measured by adding a fixing roll to these rolls, which not only makes effective use of equipment and is economical, but also enables accurate measurement.

[Brief explanation of the drawing]

The drawings show embodiments of the invention, and FIG. 1 is an explanatory diagram showing an example of an apparatus for carrying out the invention, and FIG.
The figure is a graph showing a comparison between the measurement results immediately after rolling (before winding) and the measurement results by the method according to the present invention (after winding) on the winding end side of the rolled foil. (1)...Take-up reel, (2)...Rolled foil, etc., (3
)...Rolling mill, (4)...Shape n1 regular roll, (
5)...Guide roll, (6)...Fixing roll,
(θ)...Holding angle. Figure 2 above

Claims (2)

[Claims] (1) Rolled foil, etc. (2) unwound from the take-up reel (1)
A shape measuring roll (4) which can be measured in a non-rotating state is arranged adjacent to the guide roll (5).
) and held by the roll (4) at a certain holding angle (θ), and then guided to the fixing roll (6) and fixed by the roll (6), so that it is in a stationary state for the above measurement. A method for measuring the shape of rolled foil, etc. wound around a take-up reel, characterized in that the shape is measured using a roll (4). (2) Shape measuring roll (4) and guide roll (5)
), a claim characterized in that in order to measure the shape of the rolled foil, etc. (2) immediately after rolling, a shape measuring roll installed on the exit side of the rolling mill and a guide roll placed adjacent thereto are used. Item 1. A method for measuring the shape of rolled foil, etc. wound around a take-up reel, as described in Item 1.