JP3119391B2 - Online detection device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an online detection device,
In other words, the present invention relates to an apparatus for measuring or observing a strip material (strip) during continuous conveyance without stopping, and in particular, it is possible to perform scanning in the width direction of a measurement object stably and without generating vibration. The present invention relates to an online detection device including a C-shaped frame.

[0002]

2. Description of the Related Art When it is necessary to mount transmitters and receivers of an on-line sensor on the upper and lower sides of a measuring object, for example, a running strip, for example, Japanese Patent Publication No. Sho 62-5280
As described in No. 4, a C-shaped frame for off-line drawing that is movable in a direction transverse to the transport path of the traveling strip may be used.

When a transmitter and a receiver are mounted on the upper side and the lower side of the C-shaped frame, respectively, the transmitter and the receiver are fixedly installed above and below the transporting path of the traveling strip. By moving the C-shaped frame on which the receiver is mounted and pulling it off-line, the traveling strip can be accessed from both sides of the transport path, and maintenance of the detection device is also facilitated.

[0004] Such a C-shaped frame is disclosed in
In the case of an on-line sensor such as a radiation thickness gauge attached in -52804 which does not have high measurement accuracy and does not need to maintain the attitude and position of the transmitter and the receiver with respect to the traveling strip very strictly, It can be used practically.

[0005]

However, for example, as proposed by the applicant in Japanese Patent Application Laid-Open No. 1-222962,
The difference in ultrasonic wave propagation velocity between normal grains and abnormal grains is converted into a difference in amplitude using the resonance phenomenon caused by multiple reflection interference in the steel sheet, and abnormal grains are detected from the amplitude attenuation when abnormal grains occur In the ultrasonic transmitter and the receiver used for measuring the grain orientation distribution of the grain-oriented silicon steel sheet, it is necessary to particularly strictly maintain the posture and position of the sensor with respect to the strip. Was not enough.

That is, in measuring the crystal grain orientation distribution, for example, as shown in FIG. 1, the ultrasonic transmitters 20 which are arranged opposite to each other with the steel strip 10 as the running strip to be measured interposed therebetween.
And the receiver 22 is used to measure the intensity of the reflected echo between the front and back surfaces of the plate. Particularly, when the transmitter 20 and the receiver 22 are scanned in the width direction of the steel plate 10, The scanning caused the entire C-shaped frame 12 to vibrate, and the relative position, angle, distance, and the like of the transmitter 20 and the receiver 22 fluctuated, thereby affecting measurement accuracy. In FIG. 1, reference numeral 14 denotes running wheels of the C-shaped frame 12.

The present invention has been made in order to solve the above-mentioned conventional problems, and is directed to a case where an online sensor is mounted on a C-shaped frame to facilitate access to a measurement object and maintenance of the online sensor. Also, the C-shaped frame provided with a C-shaped frame capable of strictly maintaining the position, angle, or distance of the sensor without causing the C-shaped frame to vibrate due to scanning in the width direction of the sensor and performing stable measurement. It is an object to provide a detection device.

[0008]

According to the present invention, there is provided an on-line detecting device, comprising an on-line sensor mounted thereon, a C-shaped frame movable in a direction transverse to a conveying path of a traveling strip to be measured, The object has been achieved by providing a connecting member for forming a closed loop by connecting the distal ends of the C-shaped frame.

[0009]

In the present invention, a connecting member for connecting the leading end of the C-shaped frame is provided at the time of measurement to form a closed loop, so that the on-line sensor mounted on the C-shaped frame is connected to the width of the running strip. Scanning in the direction
The character frame does not vibrate, and the position, angle, or distance of the sensor is strictly maintained, and high-precision measurement can be stably performed.

[0010] In particular, when the distal end of the C-shaped frame is made to be slightly closed when opened and a predetermined closed loop shape is formed by the tension of the connecting member at the time of connection, a simple configuration can be adopted. A closed loop shape can be easily obtained.

When the online sensor is mounted inside the C-shaped frame and an internal C-shaped frame that moves along the inner surface of the C-shaped frame is provided,
By scanning the inner C-shaped frame in the width direction of the running strip, a more stable scan can be performed.

[0012]

Embodiments of the present invention will be described below in detail with reference to the drawings.

In this embodiment, the present invention is applied to the detection of abnormal grains in a grain-oriented silicon steel sheet.

As shown in FIGS. 2 and 3, the embodiment of the on-line detecting apparatus for detecting abnormal grains according to the present invention traverses the transport path of the steel sheet 10 to be measured (the direction perpendicular to the plane of FIG. 2). And a traveling wheel 3
The lower and upper trolleys, which advance and retreat on the rail 30 by the lower side 34L,
External C-shaped frame 34 for off-line withdrawal
At the time of measurement, the distal end of the external C-shaped frame 34 is disposed at the distal end of the lower side 34L of the external C-shaped frame 34, which is a connecting member for connecting the distal end portions of the external C-shaped frame 34 to form a square closed loop. It mainly comprises an air cylinder receiver 36 and a locking air cylinder 38 disposed at the end of the upper side 34U of the external C-shaped frame 34.

The external C-shaped frame 34 is composed of a lower side 34L on which the traveling wheels 32 are rotatably disposed, an upper side 34U opposed thereto, and a column 34C connecting the upper side 34U and the lower side 34L. For example, an external C-frame drive motor 50 that rotationally drives the traveling wheels 32 via a chain 52 is capable of running on the rails 30 by itself.

The upper side 34L of the external C-shaped frame 34
When the lock air cylinder 38 is opened and the locking air cylinder 38 does not protrude, as shown by a broken line A in FIG. 2, the lock air cylinder 38 is slightly closed from a horizontal state forming a regular square closed loop. When the air cylinder 38 is actuated and abuts against the air cylinder receiver 36, and the connection is stretched (at the time of measurement), as shown by a solid line B in FIG. 2, a horizontal state is formed in which a regular square closed loop is formed. ing.

Inside the external C-shaped frame 34,
An internal C-shaped frame 40 for scanning, which moves along the inner surface of the external C-shaped frame 34, is provided, and a lower side 40L and an upper side 40U of the internal C-shaped frame 40 are provided.
, A sensor holder 42 including the ultrasonic transmitter 20 and the receiver 22 is provided.

The upper side 40U of the internal C-shaped frame 40
And the lower side 40L can be slid in a direction parallel to a plate surface orthogonal to the conveying path of the steel plate 10 by the scanning linear bearings 44 disposed on the upper side 34U and the lower side 34L of the external C-shaped frame 34 facing each other. It has been.

The upper side 40U and the lower side 40L of the internal C frame 40 are connected by a column 40C, and the column 40C is rotated by the rotation of an internal C frame drive motor 46 disposed on the side surface of the external C-shaped frame 34. Four sensors arranged at four positions in the width direction of the steel sheet 10 are simultaneously scanned in the width direction of the steel sheet 10 via the crank scanning mechanism 48. That is, each sensor performs measurement while receiving １ ／ of the entire scanning width of the steel plate 10.

Both the upper side 34U and the lower side 34L of the external C-shaped frame 34 have sufficient rigidity so that the linear bearing 44 is not deformed by the tension of the locking air cylinder 38. The elastic deformation of the column 34C, which is lower in rigidity than the upper side 34U and the lower side 34L, absorbs the deformation of the locking air cylinder 38 due to the tension.

Using the present embodiment, measurements were made while scanning the ultrasonic transmitter and receiver for detecting abnormal grains in a grain-oriented silicon steel sheet in the width direction of the steel sheet 10, and the measurement was performed on the strips of the transmitter and receiver. The posture and position could be strictly maintained, and the required measurement accuracy could be secured.

In this embodiment, since the distal end of the external C-shaped frame 34 is connected to the air cylinder receiver 36 and the locking air cylinder 38 in a projecting manner, the structure of the connecting member is simplified. The configuration of the connecting member is not limited to this.

In the present embodiment, the on-line sensor is mounted on the internal C-shaped frame 40 and the internal C-shaped frame 40 is scanned in the width direction. It is possible. In the case where scanning in the width direction is unnecessary, or when sufficient scanning accuracy can be obtained only with the external C-shaped frame 34, the internal C-shaped frame 40 is used.
May be omitted.

In the above embodiment, the present invention is applied to the attachment of the ultrasonic transmitter and receiver for detecting abnormal grains in a grain-oriented silicon steel sheet. However, the scope of the present invention is not limited to this. Obviously, it is equally applicable to other on-line sensors where the position, angle or distance of the sensor relative to the strip needs to be kept particularly strict. The number of sensors and the mounting method are not limited to those in the above embodiment.

[0025]

As described above, according to the present invention, even if the on-line sensor is mounted on the C-shaped frame to facilitate access to the measurement target and maintenance of the on-line sensor, the on-line sensor can be easily maintained. The C-shaped frame does not vibrate due to scanning in the width direction, etc.
This has an excellent effect that a stable measurement can be performed while strictly maintaining the angle or the distance.

[Brief description of the drawings]

FIG. 1 shows a conventional C used in an online detection device.
Front view showing an example of a character-shaped frame

FIG. 2 is a front view showing the configuration of an embodiment of an online detection device according to the present invention.

FIG. 3 is a sectional view taken along the line III-III in FIG. 2;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Steel plate 30 ... Rail 32 ... Running wheel 34 ... External C-shaped frame 36 ... Air cylinder receiver 38 ... Locking air cylinder 40 ... Internal C-shaped frame 42 ... Sensor holder 44 ... Linear bearing 46 ... Internal C frame drive Motor 48 ... Crank scanning mechanism

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-57-131010 (JP, A) JP-A-63-180853 (JP, A) JP-A-62-285008 (JP, A) 64607 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) G01N 29/00-29/28 G01N 27/72-27/90 G01N 21/84-21/958

Claims (3)

(57) [Claims] An on-line sensor is mounted, and a C-shaped frame movable in a direction crossing a conveyance path of a traveling strip to be measured is connected to a leading end of the C-shaped frame during measurement. An on-line detection device, comprising: a connecting member for forming a closed loop. 2. The apparatus according to claim 1, wherein the distal end of the C-shaped frame is made to be closed when opened, and a predetermined closed loop shape is formed by the tension of the connecting member when connected. Online detection device. 3. The C-shaped frame according to claim 1, wherein the on-line sensor is mounted inside the C-shaped frame, and the internal C-shaped frame moves along the inner surface of the C-shaped frame. Online detection device.