JPH04301704A - Metal strip shape detectable carrying device - Google Patents

Abstract

PURPOSE:To enable detection of a deformed condition of a metal strip in the breadth direction with high accuracy and without damaging carrying performance by detecting the energized condition to respective conductive parts of detecting rolls where a plurality of conductive parts are provided on a contact surface with the metal strip. CONSTITUTION:A detecting roll 13 is arranged downstream of an electric supplying roll 12, and a constitution is made so that a number of non-conductive rings 22 and conductive rings 23 (conductive part 16) may be arranged on a contact surface with a metal strip in an alternate manner in the axial direction of the rolls. The respective rings 23 are connected to an energization detecting device 14 through a rotary coupler 19 and a conductive wire 25. The parts A, B, F which are in contact with the rings 23 in the breadth direction are energized, while the parts C, D, E which are not in contact with the rings are not energized. The detecting device 14 detects the deformation of the strip 11 according to the presence of energization of the rings 23. Judgment is made that the deformation is small when a single ring 23 is energized, while the deformation is large when neither of the adjacent rings 23 are energized. The range of the deformation length can be presumed from the time during which energization of the respective rings 23 is not confirmed and the strip carrying velocity.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a conveying device capable of detecting the shape of a metal strip such as a cold-rolled steel strip.

0002

2. Description of the Related Art Conventionally, there is a metal strip shape detecting device as described in Japanese Patent Laid-Open No. 63-6429. This metal strip shape detection device has an elastic ring around which a metal strip is wound, and uses a sensor to detect the amount of deformation of this elastic ring due to contact pressure with the strip, thereby measuring the tension distribution in the width direction of the metal strip. As a result, the deformation state of the metal strip in the width direction can be detected.

0003

However, the prior art has the following problems (1) to (4).

(2) It is difficult to detect the tension acting on a metal strip with high accuracy, and it is difficult to improve shape detection accuracy.

(2) It is necessary to carefully control the accuracy of the sensor that detects the deformation of the elastic ring, resulting in poor maintainability.

(2) The deformation of the elastic ring may induce meandering of the metal strip, which may impede the workability of conveying the metal strip.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an apparatus that has high accuracy in detecting the shape of a metal strip during the conveyance process without impairing conveyance performance and is easy to maintain.

[0008]

[Means for Solving the Problems] The present invention as set forth in claim 1 provides a conveyance device capable of detecting the shape of a metal strip, which is disposed at a first position in the conveyance process of the metal strip, and is arranged at a contact surface with the metal strip. a power feeding roll having a power feeding part at the top thereof; a detection roll having a plurality of conductive parts electrically insulated from each other in the roll axis direction on a contact surface with the metal strip, which is disposed at a second position in the conveying process of the metal strip;
The present invention includes a conductivity detection device that detects the energization state of each conductive portion of the detection roll and detects the deformation state of the metal strip in the width direction based on the detection result.

The present invention according to claim 2 is the invention according to claim 1, further comprising: connecting a power source to the power supply part of the power supply roll via a rotary coupler; and connecting a rotary coupler to each conductive part of the detection roll. By connecting the energization detection device through a coupler, a closed circuit is constructed in which the power supply, the power supply roll, the metal strip, the detection roll, and the energization detection device are connected in series.

0010

According to the present invention, in the width direction of the metal strip, the portion of the metal strip that is in contact with the conductive portion of the detection roll is energized, and the portion that is not in contact is not energized. Therefore, the energization detection device can detect the deformation state of the metal strip in the width direction from the presence or absence of the above-mentioned energization in the width direction of the metal strip.

Therefore, according to the present invention, the following effects (1) to (4) are achieved.

[0012] The detection roll does not involve detection of contact pressure or tension with the metal strip, but merely detects the presence or absence of electricity based on the presence or absence of contact with the metal strip, and it is difficult to ensure detection accuracy. It's easy.

(2) Since the detection roll simply detects the presence or absence of electricity based on the presence or absence of contact with the metal strip, the equipment is compact and easy to maintain.

(2) Since the detection roll does not deform, it does not induce meandering of the metal strip and does not impair the workability of conveying the metal strip.

[0015]

[Example] Figure 1 is a schematic diagram showing an example of the present invention, and Figure 2
is a schematic diagram showing the detection roll, and FIG. 3 is a schematic diagram showing the principle of detection by the detection roll.

The conveyance device 10 is capable of detecting the shape of the metal strip 11, and includes a power supply roll 12, a detection roll 13, and an energization detection device 14.

The power supply roll 12 is a bridle roll placed in the process of conveying the metal strip 11, and the entire contact surface with the metal strip 11 serves as a power supply portion 15.

The detection roll 13 is arranged adjacent to the downstream side of the power supply roll 12, and has a plurality of conductive parts 1 electrically insulated from each other in the roll axis direction on the contact surface with the metal strip 11.
6.

The energization detection device 14 detects the energization state of each conductive portion 16 of the detection roll 13, and can detect the deformation state of the metal strip 11 in the width direction based on the detection result.

That is, the conveyance device 10 connects a power supply 18 to the power supply section 15 of the power supply roll 12 via a rotary coupler 17, and connects the energization detection device 14 to each conductive section 16 of the detection roll 13 via a rotary coupler 19. By connecting, a closed circuit is formed in which the power supply 18, the power supply roll 12, the metal strip 11, the detection roll 13, and the energization detection device 14 are connected in series.

[0021] Here, specifically, the detection roll 13 is
As shown in FIG. 2, a large number of nonconductor rings 22 and conductor rings 23 are alternately arranged around the outer periphery of a cylindrical nonconductor 21, and the conductor rings 23 serve as the conductive portion 16. The conducting wire 24 connected to each conductor ring 23 is connected to a conducting wire 25 connected to the energization detection device 14 via a rotary coupler 19.

The conductive portion 16 of the detection roll 13 does not necessarily need to be formed by the conductor ring 23, but may be formed by embedding conductor contacts in a mosaic pattern on the surface of the non-conductor roll. good. At this time, detection roll 1
3 makes it possible to detect the deformation state of the metal strip 11 in the width direction, so it is possible to detect the presence or absence of electricity based on the presence or absence of contact with the metal strip 11 on the same line in the width direction of the metal strip 11. It is desirable that the conductor contacts are arranged on the same line in the width direction along the roll axis of the nonconductor roll.

Further, the rotary coupler 19 that connects each conductive portion 16 of the detection roll 13 and the energization detection device 14 is, specifically, a rotating brush to which the conductive wire 24 corresponding to each conductive portion 16 is connected; Conductive wire 25 on the side of the energization detection device 14
It can be constructed by always making sliding contact with the fixed brush to which the wires are connected.

Next, the operation of the above embodiment will be explained.

According to the above embodiment, the metal strip 11
In the width direction, as shown in FIG. 3, the parts of the detection roll 13 that are in contact with the conductive part 16 (A, B, F) are energized, and the parts that are not in contact (C, D, E) are not energized. . Therefore, the energization detection device 14 detects whether or not the metal strip 11 is energized in the width direction of the metal strip 11.
It is possible to detect the deformed state of the sheet in the width direction.

[0026]The single conductive portion 16 of the detection roll 13
It can be determined that the deformation is small if there is no energization, and that the deformation is large if the adjacent conductive parts 16 are not energized continuously. Further, the length range of the deformation can also be estimated from the time during which energization is not confirmed in each conductive portion 16 and the metal strip conveyance speed.

The widthwise end position of the metal strip 11 is detected and grasped by a strip edge detection sensor installed separately from the detection roll 13.

However, according to the above embodiment, the following
There is an effect.

■The detection roll 13 is made of metal strip 11
It does not involve detection of contact pressure or tension with the metal strip 11, but merely detects the presence or absence of energization based on the presence or absence of contact with the metal strip 11, making it easy to ensure detection accuracy.

■ The detection roll 13 is simply the metal strip 1
Since the presence or absence of energization is detected based on the presence or absence of contact with 1, the equipment is compact and easy to maintain.

(2) Since the detection roll 13 is not deformed, it does not induce meandering of the metal strip 11, and the workability of conveying the metal strip 11 is not impaired.

In carrying out the present invention, the energization state in each conductive portion of the detection roll may be transmitted to the energization detection device wirelessly instead of by wire.

Further, in the practice of the present invention, the detection result of the energization detection device may be displayed on a display device in the form of a deformed state of the metal strip.

Furthermore, in carrying out the present invention, it is desirable that the space between the strip and the power supply roll and detection roll be in a dry state, and a strip surface cleaning device, drying device, etc. are arranged upstream of the present device. Ru.

Furthermore, in the practice of the present invention, in order to improve the adhesion of the metal strip to the power supply roll, presser rolls are placed on the entrance and exit sides of the power supply roll to press the metal strip against the surface of the power supply roll. It is preferable that

[0036]

[Effects of the Invention] As described above, according to the present invention, it is possible to provide an apparatus that has high shape detection accuracy and good maintainability when detecting the shape of a metal strip during the conveyance process without impairing conveyance performance. Can be done.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram showing one embodiment of the present invention.

FIG. 2 is a schematic diagram showing a detection roll.

FIG. 3 is a schematic diagram showing the principle of detection using a detection roll.

[Explanation of symbols]

10 Conveyance device 11 Metal strip 12 Power supply roll 13 Detection role 14 Energization detection device 15 Power supply section 16 Conductive part 17 Rotary coupler 18 Power supply 19 Rotary coupler

Claims (2)

[Claims] 1. A conveyance device capable of detecting the shape of a metal strip, comprising: a power supply roll disposed at a first position during the conveyance process of the metal strip and having a power supply portion on a contact surface with the metal strip; a detection roll disposed at a second position of the metal strip and having a plurality of conductive parts electrically insulated from each other in the roll axis direction on the contact surface with the metal strip; detecting the energization state of each conductive part of the detection roll; 1. A conveyance device capable of detecting the shape of a metal strip, comprising a conductivity detection device capable of detecting a deformed state of the metal strip in the width direction based on the detection result. 2. A power supply is connected to the power supply part of the power supply roll via a rotary coupler, and the energization detection device is connected to each conductive part of the detection roll via a rotary coupler, whereby the power supply and the power supply roll are connected. 2. A conveying device capable of detecting the shape of a metal strip according to claim 1, wherein the metal strip, the detection roll, and the energization detection device are connected in series to form a closed circuit.