JP2010002183A - Shape measuring device of metal strip - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a shape measuring device of a metal strip precisely measuring the shape of a metal strip to the plate width end part, easy in adjusting, and used for a long period only by exchanging parts. <P>SOLUTION: Rolls 10, 100 are pushed into a metal strip 1 with both ends rotatably supported in a line where the metal strip 1 runs. The rolls 10, 100 fit a cylinder 40 into an inside roll 20 where at least one or more grooves 21 in the direction tilted from the circumferential direction and the land part 22 which is the part other than the grooves 21, are formed on the surface or into an inside roll 200 where at least two or more grooves 201 in the circumferential direction and the land part 202 which is the part other than the grooves 201 are formed on the surface. Holes 23 are formed at the land parts 22, 202 in the axis direction of the rolls 10, 100. Sensors 30 are arranged at the holes 23 for measuring the push-in load to the metal strip 1 acting on the land parts 22, 202. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a metal strip shape measuring apparatus.

  Conventionally, as a shape measuring roll in a metal strip shape measuring apparatus, for example, as disclosed in Patent Document 1 below, a hole parallel to the axial direction is provided in the vicinity of the surface of a single solid roll configured to be rotatable. In some of the holes, a sensor for measuring the indentation load into the metal strip is installed (see Patent Document 1 below).

JP-T-2005-515456

However, there are the following problems in the above-described prior art.
(1) The roll is a solid roll. When the roll is pushed into the metal strip, the surface is worn and scratched, which leads to scratches on the surface of the product strip. Therefore, the surface must be periodically polished. For this reason, the distance between the surface of the hole provided parallel to the axial direction and the surface becomes smaller for each polishing. However, since the sensor provided in the hole measures the load by the amount of crushing of the hole, the sensitivity greatly varies depending on the distance between the hole surface and the surface, and adjustment is required for each polishing.

  Also, if this distance is initially increased, the hole will not be crushed and measurement with the sensor will not be possible, so the distance must be reduced from the beginning, so the polishing allowance must be reduced. . That is, if an expensive roll is polished by only a few millimeters, it must be discarded.

(2) If a sensor is installed near the tip of a hole that is parallel to the axial direction and does not penetrate the body length, the crushing of the hole at the sensor position is constrained by the part that does not have a hole, and the load that the sensor senses is reduced. The shape measurement accuracy deteriorates.

(3) When a sensor is installed in the middle of a hole that is parallel to the axial direction and penetrates the trunk length, the crushing of the hole near the plate edge is restrained by the part outside the plate edge and becomes smaller. The shape measurement accuracy near the part deteriorates.
(4) Adjustment of a large number of sensors installed in the holes provided on the roll surface can be performed only from the shaft end, and requires a lot of labor and skill.

  From the above, the present invention provides a metal strip shape measuring device that can accurately measure the shape of the metal strip to the end of the plate width, can be easily adjusted, and can be used for a long period of time simply by replacing parts. Objective.

The metal strip shape measuring apparatus according to the first invention for solving the above-mentioned problems is
In a roll installed so that both ends of the metal strip can be freely rotated and pushed into the metal strip.
The roll
At least one or more inner-side rolls formed on the surface with grooves in a direction inclined from the circumferential direction and land portions other than the grooves, or at least two or more circumferential grooves and other than the grooves Fit the cylinder to the inner roll formed on the surface with the land part that is a part,
A hole is formed in the land portion in the axial direction of the roll, and a sensor is installed in the hole to measure a pressing load to the metal strip that acts on the land portion.

  ADVANTAGE OF THE INVENTION According to this invention, the shape measuring apparatus of the metal strip which can measure the shape of a metal strip accurately to a board width end part, is easy to adjust, and can be used for a long term only by replacement | exchange of components is realizable.

Embodiments of a metal strip shape measuring apparatus according to the present invention will be described below with reference to the drawings.
First, the structure of the metal strip shape measuring apparatus according to the present invention will be described.
FIG. 1 is a perspective side view showing the structure of a metal strip shape measuring apparatus according to a first embodiment of the present invention. In FIG. 1, the hatched portion shows a cross section in the axial direction of a shape measuring roll (roll) 10 described later, and the portion indicated by a broken line is a side view of an inner roll 20 described later. It is sometimes shown that the portion is located inside the inner roll 20.

  As shown in FIG. 1, the shape measuring roll 10 includes an inner roll 20 having a plurality of grooves 21 formed on the surface in a direction inclined from the circumferential direction. One groove 21 may be formed, or one or a plurality of grooves may be formed spirally in the axial direction. Moreover, the shape of the bottom part of the groove | channel 21 is not limited to a shape as shown in FIG. A portion of the surface of the inner roll 20 where the groove 21 is not formed is a land portion 22.

  The inner roll 20 is fitted with a cylinder 40 having a hollow inside. The inner roll 20 is supported at both ends of the inner roll 20 by support bases 60 and 61 via bearing boxes 50 and 51 in which bearings are incorporated so that the inner roll 20 can rotate. A hole 23 is formed in the axial direction near the surface of the land portion 22 of the inner roll 20. In the hole 23, a sensor 30 for measuring an indentation load on the metal strip 1 (see FIGS. 4, 5, and 6) is installed.

  The sensor 30 for measuring the winding load of the metal strip 1 is installed before the cylinder 40 is mounted on the inner roll 20. Moreover, since the hole 23 of the land part 22 is open to the groove 21 on both sides, fine adjustment can be easily performed from both sides. For this reason, it is possible to prevent a decrease in measurement accuracy due to the installation state of the sensor 30.

FIG. 2 is a cross-sectional view taken along the line AA in FIG.
As shown in FIG. 2, in the metal strip shape measuring apparatus according to the first embodiment, the sensors 30 are installed at intervals of 90 degrees in the circumferential direction, and the shape measuring roll 10 is rotated once. In this case, measurement is performed four times by the sensor 30. That is, since the land portion 22 is inclined from the circumferential direction, the sensors 30 installed at a 90 ° pitch in the circumferential direction are shifted by 1/4 of the pitch of the land portion 22 in the axial direction. Therefore, in the plate width direction, the tension of the metal strip 1 is measured at a short pitch that is ¼ of the pitch of the land portions 22. The number of times of measurement may be any number as long as it is one or more during one rotation. To increase the number of times of measurement, the pitch in the circumferential direction where the sensor 30 is installed may be narrowed.

  Thus, in the metal strip shape measuring apparatus according to the first embodiment, the sensor 30 for measuring the indentation load on the metal strip 1 is installed in the hole 23 formed in the land portion 22. The position of the land portion 22 at the position in the width direction of the metal strip 1 changes as the shape measuring roll 10 rotates. That is, by forming a plurality of holes 23 formed in the land portion 22, the measurement interval in the axial direction by the sensor 30 can be made narrower than the interval of the land portion 22. Therefore, the shape of the metal strip 1 can be measured with high accuracy.

  The sensor 30 is connected to an arithmetic processing device (not shown) that measures the shape of the metal strip 1 based on a measurement signal from the sensor 30. In addition, since the connection method of the sensor 30 and the arithmetic processing apparatus should just be connected by a conventionally well-known method as shown by the said patent document 1 grade | etc., Detailed description about a connection method is abbreviate | omitted.

Here, the principle of measuring the shape of the metal strip 1 in the metal strip shape measuring apparatus according to the first embodiment will be described.
Although tension is applied to the metal strip 1 in advance, if the shape of the metal strip 1 is not uniform, a deviation occurs between the average tension in the entire plate width direction and the tension at each position. For this reason, when the shape measuring roll 10 is pushed into the metal strip 1 to which tension is applied, a reaction force (pushing force) proportional to the tension at each position acts on the shape measuring roll 10.

  The shape measuring roll 10 measures this reaction force (pushing force) with a sensor 30 installed on the internal land portion 22, and the tension at each position is calculated from the measured value of each reaction force. Since the shape of the metal strip 1 is proportional to the difference between the tension at each position and the average tension in the entire sheet width direction, the average tension is first obtained by averaging the measured values in the entire sheet width direction, and then the average tension. The shape of the metal strip 1 can be measured by calculating the difference between the tension and the tension at each position and converting the calculation result into the shape of the metal strip 1.

  As described above, when the shape measuring roll 10 is pushed into the metal strip 1 to which tension is applied, a pushing load proportional to the tension of the portion acts on the surface of the shape measuring roll 10. Both the indentation load acting on the cylinder 40 located in the groove 21 portion formed in the inner roll 20 and the indentation load acting on the cylinder 40 located in the land portion 22 are handled by the land portion 22. Become.

Here, the sum of half of the widths of the land portion 22 and the grooves 21 on both sides of the land portion 22 is defined as the width ΔW, and the tension of the portion having the width ΔW is defined as σ. If the measurement load is P, the winding angle is θ, and the thickness of the metal strip 1 is H, the tension σ can be expressed by the following equation (1).
σ = P / {2H · ΔW · sin (θ / 2)} (1)
And since the sensor 30 installed in the hole 23 of the land part 22 will receive a big load compared with the case where the groove | channel 21 is not formed in the conventional inner side roll 20, the measurement precision in the sensor 30 can be improved.

  As described above, in the metal strip shape measuring apparatus according to the first embodiment, since there are the grooves 21 on both sides of the land portion 22, the crushing amount of the hole 23 in which the sensor 30 is installed is the same as that of a conventional solid roll. Unlike the formed axial hole (see Patent Document 1 above), it is not constrained to a nearby state. For this reason, the crushing amount of the hole 23 is proportional to the load acting on each position in the width direction of the metal strip 1 on the land portion 22 regardless of the position in the width direction of the metal strip 1. The shape can be accurately measured up to the end in the width direction.

  In the metal strip shape measuring apparatus according to the first embodiment, the metal strip 1 is in contact with the cylinder 40 in the entire width direction of the metal strip 1, so that the surface of the metal strip 1 is scratched. Or the like can be prevented. In addition, when the thickness of the cylinder 40 is too thick, the collapse amount of the hole 23 in which the sensor 30 is installed decreases due to the rigidity of the cylinder 40. For this reason, the thickness of the cylinder 40 is preferably thin as long as it can prevent the surface of the metal strip 1 from being scratched. For example, the thickness of the cylinder 40 is preferably 20 mm or less. .

  FIG. 3 is a see-through side view showing the structure of the metal strip shape measuring apparatus according to the second embodiment of the present invention. In FIG. 3, the same reference numerals as those in FIG. 1 are assigned to the same reference numerals as those in FIG. In FIG. 3, the hatched portion shows a cross section in the axial direction of a shape measuring roll (roll) 100 described later, and the portion shown by a broken line is a side view of an inner roll 200 described later. It is sometimes shown that the portion is located inside the inner roll 200.

  As shown in FIG. 3, in the metal strip shape measuring apparatus according to the second embodiment, the inner roll 200 of the shape measuring roll 100 has a plurality of circumferential grooves 201 formed on the surface. Land portions 202 are formed between the grooves 201. Since other configurations and the like are the same as those in the first embodiment, description thereof is omitted here.

  As described above, in the metal strip shape measuring apparatus according to the second embodiment, since the groove 201 and the land portion 202 are formed in the circumferential direction of the inner roll 200, the measurement interval in the axial direction by the sensor 30 is measured. Can be the same as the interval between the land portions 202.

Next, the example of arrangement | positioning of the shape measurement rolls 10 and 100 in the shape measuring apparatus of the metal strip which concerns on this invention is demonstrated.
FIG. 4 is a view showing an arrangement example for installing the shape measuring rolls 10 and 100 in the line on which the metal strip 1 travels in the metal strip shape measuring apparatus according to the present invention.
As shown in FIG. 4, the shape measuring rolls 10, 100 are pushed into the metal strip 1 by arranging the deflector rolls 70, 71 before and after the shape measuring rolls 10, 100.

FIG. 5 is a view showing an arrangement example in which the shape measuring rolls 10, 100 are installed between the rolling mills 80, 81.
As shown in FIG. 5, since the metal strip 1 is pressed by the rolling mills 80, 81, the shape measuring rolls 10, 100 are simply set higher than the pass lines of the rolling mills 80, 81. 100 is pushed into the metal strip 1. In addition, when obtaining a big winding angle | corner, you may make it install a deflector roll (illustration omitted) ahead of the shape measurement rolls 10 and 100. FIG.

FIG. 6 is a view showing an arrangement example in which the shape measuring rolls 10 and 100 are installed on the exit side of the rolling mill 82.
As shown in FIG. 6, the winding device 90 that winds up the metal strip 1 is located below the traveling line, so that it is shaped without installing deflector rolls 70 and 71 (see FIG. 4). The measuring rolls 10 and 100 can be pushed into the metal strip 1.

As described above, according to the metal strip shape measuring apparatus of the present invention, the following effects can be obtained.
(1) Since the cylinder 40 is attached to the inner rolls 20 and 200 on which the sensor 30 for measuring the pushing force to the metal strip 1 is installed, the cylinder 40 is not removed even if the cylinder 40 is polished and discarded. It is only necessary to replace the sensor, and it is economical and can always maintain a stable measurement state.

(2) Since the land portions 22 and 202 are sandwiched between the grooves 21 and 201 on both sides, the deformation of the land portions 22 and 202 due to the pushing load to the metal strip 1 flowing through the land portions 22 and 202 is adjacent to the land. The parts 22 and 202 are not affected. For this reason, it is possible to accurately measure the shape of the end of the metal strip 1 in the width direction.

(3) The indentation load applied to the metal strip 1 received by the land portions 22 and 202 is the sum of the land portions 22 and 202 and the grooves 21 and 201 on both sides thereof. Measurement can be facilitated.

(4) The sensor 30 for measuring the indentation load on the metal strip 1 is installed before the cylinder 40 is attached to the inner rolls 20 and 200. Further, since the holes 23 formed in the land portions 22 and 202 are opened in the grooves 21 and 201 on both sides, fine adjustment can be easily performed from both sides. For this reason, it is possible to prevent a decrease in measurement accuracy due to the installation state of the sensor 30.

  Due to these effects, the measurement accuracy of the shape measuring device of the metal strip 1 is greatly improved, and the service life is greatly increased. Therefore, the high-quality metal strip 1 can be manufactured stably and easily. Profits are immense.

  INDUSTRIAL APPLICABILITY The present invention can be used for a metal strip shape measuring apparatus installed in a line where the metal strip travels.

It is the see-through | perspective side view which showed the structure of the shape measuring apparatus of the metal strip which concerns on the 1st Embodiment of this invention. It is sectional drawing in the cross section shown by AA in FIG. It is the see-through | perspective side view which showed the structure of the shape measuring apparatus of the metal strip which concerns on the 2nd Embodiment of this invention. It is the figure which showed the example of arrangement | positioning for installing the shape measurement roll in the shape measuring apparatus of the metal strip which concerns on this invention in the line which a metal strip runs. It is the figure which showed the example of arrangement | positioning which installed the shape measurement roll between each rolling mill. It is the figure which showed the example of arrangement | positioning which installed the shape measurement roll in the exit side of the rolling mill.

Explanation of symbols

1 Metal strip 10, 100 Shape measuring roll (roll)
20 Inner roll 21 of a shape measuring roll having grooves and lands from the circumferential direction 21 Groove inclined from the circumferential direction provided in the inner roll 22 Land portion 23 of the inner roll 30 Hole 30 provided in the land portion Load measuring sensor 40 Inner roll Cylinders 50, 51 fitted into bearings 60, 61 Frames 70, 61 holding bearing boxes Deflector rolls 80, 81, 82 for winding a traveling metal strip around a shape measuring roll 90 Rolled metal strip winding device 200 Inner roll 201 of shape measuring roll having circumferential groove and land portion Circumferential groove 202 provided on inner roll Land portion of inner roll

Claims (1)

In a roll installed so that both ends of the metal strip can be freely rotated and pushed into the metal strip.
The roll
At least one or more inner-side rolls formed on the surface with grooves in a direction inclined from the circumferential direction and land portions other than the grooves, or at least two or more circumferential grooves and other than the grooves Fit the cylinder to the inner roll formed on the surface with the land part that is a part,
A shape of the metal strip, wherein a hole is formed in the land portion in the axial direction of the roll, and a sensor for measuring a pushing load to the metal strip that acts on the land portion is installed in the hole. measuring device.

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