JPH0634465A - Roller for measuring shape of metal strip - Google Patents

Abstract

PURPOSE:To obtain a shape measuring roller which can be formed to a relatively small diameter, is not required to be rotated, and is excellent in maintainability. CONSTITUTION:This roller is provided with a fixed shaft 11 and outer cylindrical body 13 put on the shaft 11. The body 13 is maintained on the shaft 11 with a plurality of roller bodies 14 in between so that the body 13 can be freely rotated around the shaft 11 while the body 13 is in contact with a metal strip 16.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metal strip shape measuring roller for measuring the shape of a metal strip such as a rolled material.

[0002]

2. Description of the Related Art A conventional metal band shape measuring roller is shown in FIG.
And a pair of disc bodies 2 having a rotating shaft 1 as shown in FIG.
In the meantime, a plurality of disc-shaped divided disks 3 are stacked in the axial direction and fastened by several tie rods 4. And a sensor for measuring radial load due to tension
5 is attached to each split disk 3, and based on the information of the radial load measured by this sensor 5,
The tension in the width direction of the metal strip 6 of a rolled material or the like is calculated, and the shape of the metal strip 6 is measured by this. In this case sensor 5
The sensor 5 detects the radial load from the metal strip 6 once per rotation because it rotates together with the pair of disc bodies 2 and the split disk 3. Also, multiple individual split disks
3 is integrated with a tie rod 4, and the displacement between the split discs 3 is secured by the frictional force between the split discs 3.

[0003]

However, the above-mentioned prior art has the following problems. Since the split disk 3 is integrated by the tie rods 4, the strength is lower than that of a single roller, and therefore the tension must be larger than that of a single roller. Since the entire roller having a large moment of inertia rotates, slippage with the metal strip 6 is likely to occur, and it is necessary to drive the roller in order to prevent slippage. A rotary transmitter (slip ring) is required to transmit a signal from the rotating roller to a stationary object (ground), and maintenance is poor. Since the sensor 5 is rotating, it is necessary to set the timing for measuring the peak of the signal.

In view of the above problems, it is an object of the present invention to provide a shape measuring roller which has a relatively small diameter, does not need to be rotationally driven, and has excellent maintainability.

[0005]

The technical means of the present invention for solving this technical problem is a fixed shaft 11 and the fixed shaft.
And an outer cylinder body 13 fitted onto the outer cylinder body 11.
The fixed shaft 11 has a plurality of roller bodies so that it can rotate in contact with 16.
A plurality of load sensors 19 that are rotatably held around a fixed shaft via 14 and that detect a radial load from the metal band 16 are embedded in the fixed shaft 11.

[0006]

[Function] The outer cylinder of the shape measuring roller on the metal strip 16 such as rolled material
When 13 are brought into contact with each other, the outer cylindrical body 13 is fixed to the fixed shaft 11 by the frictional force generated between the metal belt 16 and the outer cylindrical body 13 by the tension of the metal belt 16.
It is driven to rotate around. The tension distribution of the metal band 16 is transmitted to each load sensor 19 through the outer cylinder body 13 and the roller body 14. Therefore, the tension distribution of the metal strip 16 can be calculated from the detected load (radial load) of each load sensor 19. The shape of the metal band 16 can be detected by measuring the tension distribution in the width direction of the metal band 16.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the illustrated embodiments. 11 is a fixed shaft, both ends of which are fixed to a casing 12. Reference numeral 13 denotes an outer cylindrical body which is fitted onto the fixed shaft 11 and is rotatably held around the fixed shaft via the plurality of roller bodies 14 on the fixed shaft 11 and is a metal such as a rolled material which is moved in the longitudinal direction. It is designed to rotate in contact with the belt 16. A plurality of the roller bodies 14 are arranged between the fixed shaft 11 and the outer cylindrical body 13 at regular intervals in the axial direction, and at regular intervals in the circumferential direction over the entire circumference of the fixed shaft 11. A plurality of roller bodies 14 are arranged, and each roller body 14 is fitted and held in a holding recess 15 provided on the inner peripheral surface of the outer cylindrical body 13 and is rotatably abutted on the outer circumference of the fixed shaft 11.

Reference numeral 19 denotes a load sensor for detecting a radial load, which is composed of, for example, a load cell, a piezoelectric element, and a strain gauge, and a plurality of them are embedded in the fixed shaft 11 at intervals in the axial direction so as to correspond to the roller body 14. The radial load from the metal band 16 is detected via the outer cylinder body 13 and the roller body 14. Each load sensor 19 is connected to a control unit (not shown) via an amplifier 20.

[0009]

According to the present invention, the fixed shaft 11 and the fixed shaft
And an outer cylinder body 13 fitted onto the outer cylinder body 11.
The fixed shaft 11 has a plurality of roller bodies so that it can rotate in contact with 16.
Since a plurality of load sensors 19 for detecting a radial load from the metal strip 16 are embedded in the fixed shaft 11 so as to be rotatably held around the fixed shaft via one fixed shaft 11,
Since it passes through the center of the roller, the strength is improved and the entire diameter of the roller is small. Further, since the central fixed shaft 11 is stationary and only the outer cylindrical body 13 rotates, the moment of inertia becomes small and it becomes unnecessary to rotationally drive the roller. Further, since the load sensor 19 is stationary, a rotary transmitter for transmitting a signal from the load sensor 19 is not required, which is excellent in maintainability. Moreover, the load sensor 19 can always be positioned at the position of the maximum peak where the radial load from the metal strip 16 is maximized, and therefore it is not necessary to measure the timing of the signal peak, and the signal from the load sensor 19 can be eliminated. The signal processing mechanism or the like for processing can be made to have a simple configuration.

[Brief description of drawings]

FIG. 1 is a front sectional view showing an embodiment of the present invention.

FIG. 2 is a sectional view taken along the line AA of FIG.

FIG. 3 is an enlarged side sectional view.

FIG. 4 is a half-cut front view showing a conventional example.

5 is a sectional view taken along line BB of FIG.

[Explanation of symbols]

 11 Fixed shaft 13 Outer cylinder body 14 Roller body 16 Metal band 19 Load sensor

Claims (1)

[Claims] 1. A fixed shaft (11) and an outer cylinder body (13) externally fitted to the fixed shaft (11), wherein the outer cylinder body (13) contacts the metal band (16). Multiple rollers (14) on the fixed shaft (11) to rotate
Is rotatably held around the fixed shaft through the fixed shaft.
A metal band shape measuring roller having a plurality of load sensors (19) embedded in (11) for detecting a radial load from the metal band (16).