JP2733008B2 - Rolled material shape detector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for detecting the shape of a strip-shaped rolled material such as a thin plate.

[0002]

2. Description of the Related Art As this type of apparatus for detecting the shape of a strip-shaped rolled material, those described in, for example, JP-A-1-191027, JP-A-1-207601, and JP-A-5-60549 are known. is there. As shown in FIGS. 13 and 14, the conventional shape detecting device includes a shape detecting roller for detecting the shape of the rolled material 10.
With 11. The shape detecting roller 11 is formed by laminating a plurality of disks 12 in a plate width direction (axial direction), and one load sensor 13 is attached to each disk 12.
The load sensors 13 are mounted in a staggered arrangement with the mounting angle being changed in the circumferential direction of the roller 11. The arrangement of the load sensor 13 in the detection roller 11 is 40 ° sequentially from one side of the detection roller 11.
Attach every 30 or every 30 degrees.

Each disk 12 outputs a load signal once per rotation. Signals of several disks 12 having different mounting positions of the load sensor 13 are added and output as a predetermined voltage signal via a charge amplifier 14, and the output is processed by a signal processing computer 15, and Is obtained. When the mounting angle of the load sensor 13 is every 40 °, a maximum of 6 discs 12 per channel of the charge amplifier 14, and when every 30 °, a maximum of 8 discs per channel of the charge amplifier 14. , And outputs a signal.

The detection roller 11 is bent due to its own weight and plate tension. Roller in this bent state
When rotating 11, a compressive force or the like acts on the load sensor 13,
As shown in FIG. 15, a "fluctuation" signal having a sine waveform is superimposed on the detection signal in one cycle per rotation. JP-A-5-6
In the apparatus described in Japanese Patent No. 0549, this "fluctuation" is removed by a predetermined arithmetic processing.

[0005]

SUMMARY OF THE INVENTION The above-mentioned Japanese Patent Application Laid-Open No. 5-605
In the apparatus disclosed in Japanese Patent Publication No. 49, since the "fluctuation" is removed by a predetermined arithmetic processing, the processing is complicated and an expensive arithmetic processing unit is required, resulting in an increase in cost. Met. Therefore, an object of the present invention is to provide a rolled material shape detecting device capable of easily reducing fluctuations with a simple configuration.

[0006]

In order to achieve the above object, the present invention takes the following measures. That is, a feature of the first invention is that a shape detection roller that rotates in contact with a strip-shaped rolled material traveling in a longitudinal direction, and a plurality of load sensors arranged along the axial direction of the roller. In a rolled material shape detection device having a charge amplifier that converts a load measurement signal from the load sensor into a voltage, the load sensor is arranged with a phase difference of 120 ° in a circumferential direction,
Three load sensors having a phase difference of 120 ° from each other,
That is, they are connected to the same channel of the charge amplifier.

A feature of the second invention is that the load sensors are arranged with a phase difference of 40 ° in the circumferential direction, and three load sensors having a phase difference of 120 ° with each other are provided in the charge amplifier of the charge amplifier. The point is that they are connected to the same channel. A feature of the third invention is that the load sensors are arranged with a phase difference of 30 ° in the circumferential direction, and two load sensors having a phase difference of 180 ° are provided on the same channel of the charge amplifier. At the point where they are connected.

A feature of the fourth invention is that the load sensors are arranged with a phase difference of 60 ° in the circumferential direction, and two load sensors having a phase difference of 180 ° with each other are provided in the charge amplifier of the charge amplifier. The point is that they are connected to the same channel.

[0009]

According to the present invention, the shape detecting roller is bent due to its own weight and the plate tension of the rolled material. When the roller is rotated in this bent state, a compressive force or the like acts on the load sensor, and the sine wave “fluctuation” occurs in one cycle per rotation.
A signal is generated. As shown in FIG. 2, according to the first aspect of the present invention, a sine wave fluctuation signal is output from each of the load sensors arranged at intervals of 120 ° from each other. Each of these fluctuation signals is 12
The phases are shifted by 0. Accordingly, by adding these three signals and passing the same signal through the same channel of the charge amplifier, the fluctuation element is canceled and a signal having a small fluctuation amount is output.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, a shape detecting device for a rolled material comprises a shape detecting roller 1 rotating in contact with a strip-shaped rolled material running in a longitudinal direction, and a plurality of load sensors 2 arranged along the axial direction of the roller 1. And a charge amplifier 3 for converting a load measurement signal from the load sensor 2 into a voltage. The load sensor 2 comprises a pressure-sensitive element.

The shape detecting roller 1 is formed by laminating a plurality of (in FIG. 1, 28) disks 4 along the axis of the rotating shaft. Each disk 4 is provided with one load sensor 2. However, "DUMMY" in FIG.
Is a dummy disk, and no load sensor is attached to this disk. The load sensors 2 are arranged with a phase difference of 120 ° in the circumferential direction. Then, three load sensors 2 having a phase difference of 120 ° which are close to each other are grouped as one group, and the load sensors 2 of the group are connected to the same channel of the charge amplifier 3.

That is, the load sensors 2 of the first, second, and third disks 4 are connected to the A channel, and the fourth, fifth, and sixth disks 4 are connected.
The fourth load sensor 2 is connected to the B channel, and the seventh,
The load sensors 2 of the discs 8 and 10 are connected to the C channel. In the embodiment of the present invention having the above configuration, the amount of deflection of the shape detecting roller 1 is determined by the position of the roller 1 in the axial direction.

Accordingly, the compressive force and the like acting on the load sensor 2 are also determined by the position of the detection roller 1 in the axial direction. The magnitude (amplitude) of the “fluctuation” is substantially the same at substantially the same position (adjacent disks or the like) in the axial direction. As a result, the position of the load sensor 2 on the adjacent disk 4 is set to 120
When the three signals are combined and connected to one channel of the charge amplifier 3, the fluctuation signal from each load sensor 2 becomes a signal whose phase is shifted by 120 ° as shown in FIG. 2, and the three signals are added. In the output signal from the charged amplifier 3, the fluctuation element is canceled, and the signal has a small fluctuation amount.

FIG. 3 shows that the load sensor 2 is set at 40 °.
FIG. 9 is a connection diagram to the charge amplifier 3 when the charge amplifier 3 is attached to each. That is, the load sensors 2 (1
20 ° sensor) to channel A,
Load sensors 2 of 4 and 6 disks 4 are connected to the B channel.

As shown in FIG. 4, three load sensors 2 for each of the first, third, and fifth discs 4 at every 120 ° constitute a first group. Each of the three load sensors 2 is a second group,
Even if the second group and the second group are connected to one channel of the charge amplifier 3, the effect of reducing the fluctuation is the same. Figure 5
FIG. 10 shows various wiring examples when the load sensor 2 is attached every 30 degrees.

In FIG. 5, the load sensors 2 of the first and fifth disks 4 are arranged with a phase of 180 ° from each other.
Are connected to the A channel, the load sensors 2 of the second and sixth disks 4 are connected to the B channel, the load sensors 2 of the third and seventh disks 4 are connected to the C channel,
And the load sensor 2 of the eighth disk 4 are connected to the D channel.

In FIG. 6, a load sensor for every 180.degree.
2 are connected to one channel. That is, the groups of the first and fifth disks 4 and the groups of the third and seventh disks 4 are made into one, and their load sensors 2 are connected to the A channel.
The group of the second and sixth disks 4 and the group of the fourth and eighth disks 4 are made one, and their load sensors 2 are connected to the B channel.

FIG. 7 shows a group of first and fifth disks 4 and a group of second and sixth disks 4 having their load sensors 2 connected to the A channel, and the third and seventh disks 4 being connected. The group No. 4 and the groups No. 4 and No. 8 are connected to the B channel. FIG.
As shown in FIG. 3, three sets of two sets of load sensors 2 for every 180 ° are connected to one channel.

That is, a group of the first and fifth disks 4 and
Group of 2nd and 6th disk 4 and 3rd and 7th disk 4
Group and connected to the A channel, and the fourth and eighth disk 4 groups and the ninth and thirteenth disk 4
Group and the groups of the tenth and fourteenth disks 4 are connected to the B channel. FIG. 9 shows a pair of two load sensors 2 for every 180 °.
Connect them together to one channel, and
Each pair of load sensors 2 for each ° is connected to another channel.

That is, a group of the first and fifth disks 4 and
Group of 2nd and 6th disk 4 and 3rd and 7th disk 4
Are connected to the A channel, and the groups of the fourth and eighth disks 4 are connected to the B channel. FIG. 10 shows a load sensor 2 for every 180 °.
Are connected together to one channel.

FIGS. 11 and 12 show a load sensor.
2 is an example of wiring in the case of arranging every
Each load sensor 2 is connected to one channel as one group. That is, the first and third disk 4 groups are connected to the A channel, and the second and fourth disk 4 groups are connected to the B channel.

FIG. 12 shows two sets of load sensors for every 180 ° as one set, and the two sets are connected to one channel. That is, the groups of the first and third disks 4 and the second and fourth groups are connected to one A channel. The present invention is not limited to the above embodiments.

[0023]

According to the present invention, the fluctuation can be canceled and the amount of the fluctuation can be reduced by a very simple configuration of adding the signals of the load sensors arranged in a predetermined arrangement, so that the precision can be improved. Shape measurement becomes possible.

[Brief description of the drawings]

FIG. 1 is a wiring diagram showing an embodiment of the present invention in which load sensors are arranged every 120 °.

FIG. 2 is an explanatory diagram of cancellation of a fluctuation signal.

FIG. 3 is a first wiring diagram showing an embodiment of the present invention in which load sensors are arranged at every 40 °.

FIG. 4 is a second wiring diagram showing an embodiment of the present invention in which load sensors are arranged at every 40 °.

FIG. 5 is a first wiring diagram showing an embodiment of the present invention in which load sensors are arranged every 30 °.

FIG. 6 is a second wiring diagram showing an embodiment of the present invention in which load sensors are arranged every 30 °.

FIG. 7 is a third wiring diagram showing an embodiment of the present invention in which load sensors are arranged every 30 °.

FIG. 8 is a fourth wiring diagram showing an embodiment of the present invention in which load sensors are arranged at every 30 °.

FIG. 9 is a fifth wiring diagram showing an embodiment of the present invention in which load sensors are arranged every 30 °.

FIG. 10 is a sixth wiring diagram showing an embodiment of the present invention in which load sensors are arranged every 30 °.

FIG. 11 is a first wiring diagram showing an embodiment of the present invention in which load sensors are arranged at every 60 °.

FIG. 12 is a second wiring diagram showing an embodiment of the present invention in which load sensors are arranged at every 60 °.

FIG. 13 is a wiring diagram showing a conventional shape detection device.

FIG. 14 is a perspective view showing a structure of a shape detection roller.

FIG. 15 is a graph for explaining “fluctuation”.

[Explanation of symbols]

 1 Shape detection roller 2 Load sensor 3 Charge amplifier 4 Disk

 ────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-1-191027 (JP, A) JP-A-1-207601 (JP, A) JP-A-5-60549 (JP, A)

Claims (4)

(57) [Claims] 1. A shape detecting roller which rotates in contact with a strip-shaped rolled material running in a longitudinal direction, a plurality of load sensors arranged along an axial direction of the roller, and a load measurement signal by the load sensor. A load amplifier configured to convert the voltage into a voltage, wherein the load sensors are arranged with a phase difference of 120 ° in a circumferential direction, and the three load sensors having a phase difference of 120 ° with each other are charged by the charge sensor. An apparatus for detecting the shape of a rolled material, which is connected to the same channel of an amplifier. 2. A shape detection roller rotating in contact with a strip-shaped rolled material running in a longitudinal direction, a plurality of load sensors arranged along the axial direction of the roller, and a load measurement signal from the load sensor. A load amplifier configured to convert the voltage into a voltage; wherein the load sensors are arranged with a phase difference of 40 ° in the circumferential direction, and the three load sensors having a phase difference of 120 ° with each other are charged with the charge. An apparatus for detecting the shape of a rolled material, which is connected to the same channel of an amplifier. 3. A shape detecting roller that rotates in contact with a strip-shaped rolled material running in a longitudinal direction, a plurality of load sensors arranged along the axial direction of the roller, and a load measurement signal from the load sensor. A load amplifier configured to convert the voltage into a voltage, wherein the load sensors are arranged with a phase difference of 30 ° in the circumferential direction, and the two load sensors having a phase difference of 180 ° with each other are charged with the charge sensor. An apparatus for detecting the shape of a rolled material, which is connected to the same channel of an amplifier. 4. A shape detection roller rotating in contact with a strip-shaped rolled material running in a longitudinal direction, a plurality of load sensors arranged along the axial direction of the roller, and a load measurement signal from the load sensor. A load amplifier configured to convert the voltage into a voltage; wherein the load sensors are arranged with a phase difference of 60 ° in the circumferential direction, and the two load sensors having a phase difference of 180 ° with each other are charged with the charge sensor. An apparatus for detecting the shape of a rolled material, which is connected to the same channel of an amplifier.