JP2885388B2 - Centering method for joining strips - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of centering a succeeding strip to join a succeeding strip to a preceding strip in a continuous heat treatment line for a metal strip or the like.

[0002]

2. Description of the Related Art In a continuous heat treatment line for a strip such as a metal strip, for example, the leading end of a following strip is joined to the rear end of a preceding strip by welding in order to flow the strip without interruption.

At the time of this joining, the leading end of the following band is wrapped around the rear end of the preceding band so that the leading end of the following band is not inclined in the approaching direction (inclination in the horizontal plane). Failure to match the center of the trailing strip will cause troubles, such as displacement of the trailing strip in the furnace in the width direction.

[0004]

For this reason, the joining of the strips requires great care, which is troublesome, and the workability is poor and the joining cannot be performed accurately. Was.

[0005]

SUMMARY OF THE INVENTION A centering method for splicing strips according to the present invention is intended to solve the above problems.
A band-like material conveyed substantially horizontally is clamped on a movable table, the movable table is rotated in a horizontal plane by the operation of a first actuator, and the movable table is moved in the width direction by the operation of a second actuator. A centering device capable of correcting the inclination of the band-shaped member in the approach direction and a deviation in the width direction thereof, and a pair of centering devices fixed at front and rear positions of the centering device and detecting positions of one side edge of the band member before and after the centering device, respectively. And a pair of position detection sensors for detecting the positions of both side edges of the strip are provided at the front position of the centering device so as to move in the width direction by the operation of the third actuator. Provided with a width detector, the width detector detects the center of the preceding strip, and operates the third actuator to control the width detector. It is moved to the center of the running strip, the inclination of the approaching direction of the following strip is detected by the tilt detector, the first actuator is operated, the movable table is rotated, and the tilt of the running direction of the following strip is determined. After the correction, the width detector detects a shift in the width direction of the succeeding strip with respect to the preceding strip, and operates the second actuator to move the movable table in the width direction to correct the shift. It is characterized by having done.

[0006]

The following strip is automatically centered on the preceding strip.

[0007]

Next, an embodiment of the present invention will be described with reference to the drawings.
In FIG. 1, reference numeral 1 denotes a feed roller, reference numeral 2 denotes a pinch roller, and a belt-shaped material 3 is pulled by the pinch roller 2 or a bridle roll (not shown) and conveyed horizontally in the direction of the arrow.

Reference numeral 4 denotes a centering device. The centering device 4 has a carriage 6 on a rail 5 laid in the width direction.
It is arranged so that it can move by the operation of the actuator 7,
A movable table 9 is provided so as to be rotatable around a center shaft 8 vertically established at the center of the carriage 6. Reference numeral 10 denotes a first actuator provided on the carriage 6 for rotating the movable table 9 in a horizontal plane.

On the movable table 9, pressing rollers 11, 11 capable of holding the strip 3 are provided so as to be able to move up and down by a cylinder 12, respectively, and are held on the movable table 9 by the pressing rollers 11, 11. The attached belt-shaped material 3 can correct the inclination in the approach direction by rotating the movable table 9 in the horizontal plane by the operation of the first actuator 10, and the movable table 9 moves in the width direction by the operation of the second actuator 7. By doing so, the displacement in the width direction can be corrected.

Reference numeral 13 denotes an inclination detector in which a pair of upper and lower optical position detection sensors 14, 14 are fixedly provided at the front and rear positions of the centering device 4. The position detection sensors 14,
A plurality of photo sensors are arranged in a row in the width direction of the band-shaped material 3,
The photo sensor detects whether or not the strip 3 is present on each of the photo sensors, and transmits a signal to the controller 20 to detect the position of one end of the strip 3. The inclination of the band-shaped material 3 can be detected by capturing the deviation with respect to 14.

Reference numeral 15 denotes a width detector provided at a position in front of the centering device 4. The width detector 15 has a pair of position detection sensors 16 and 16 on the upper and lower surfaces. It is supported on a rail 18 and is arranged so as to be movable in the width direction by the operation of a third actuator 17 fixed to one side.

Reference numeral 20 denotes the first actuator 10
Is a controller that controls the second actuator 7 and the third actuator 17.

Reference numeral 22 denotes a shear for cutting the strip 3; 23, a welding machine; and 24, an optical detector for detecting the presence or absence of the strip 3 provided between the shear 22 and the welding machine 23.

In this centering device, when the preceding strip passes over the width detector 15, the position detecting sensors 16, 16 detect both side edges of the preceding strip so that the preceding strip is detected. Find the center. Then, the signal is transmitted to the controller 21, and the controller 21 operates the third actuator 17 to move the width detector 15 in the width direction, thereby correcting the width detector 15 so as to be located at the center of the preceding strip.

Before the preceding strip material disappears from the width detector 15, the width detector 15 is stopped at the correction position.

When the leading end of the following strip is sent to the position detection sensors 14, 14, the position detection sensor 1
At 4 and 14, the inclination of the trailing strip in the traveling direction is detected,
The controller 20 operates the actuator 10 to rotate the movable table 9 to correct the inclination. Thereafter, the width detector 15 detects a shift in the width direction of the succeeding strip with respect to the preceding strip, and the controller 21 operates the second actuator 7 to move the movable table 9 in the shift direction to correct the shift. By doing so, the center of the succeeding strip is matched with the center of the preceding strip. In this way, the trailing strip is fed to the welding machine and joined to the rear end of the preceding strip.

According to this centering method for joining strips, even if the width of the preceding strip is different from the width of the succeeding strip, the center of the preceding strip coincides with the center of the preceding strip. Centering.

[0018]

As described above, according to the banding centering method of the present invention, centering can be performed so that the following band is always aligned with the center of the preceding band, and the inclination of the following band is corrected. Since the displacement in the width direction of the succeeding belt-shaped material is corrected after that, the displacement is automatically and accurately corrected without fail, which has a beneficial effect of facilitating joining.

[Brief description of the drawings]

FIG. 1 is an arrangement side view of a strip material processing line.

FIG. 2 is a plan view of a centering device for joining strip materials.

[Explanation of symbols]

 Reference Signs List 4 Centering device 7 Second actuator 8 Center axis 9 Movable table 10 First actuator 11,11 Roller down roller 13 Tilt detector 14,14 Position detection sensor 15 Width detector 16,16 Position detection sensor 17 Third actuator 20 Controller 21 Controller

Continuation of the front page (58) Field surveyed (Int. Cl. ⁶ , DB name) B65H 23/00-23/34 B65H 21/00 B21B 15/00

Claims (1)

(57) [Claims] An operation of a first actuator causes the movable table to rotate within a horizontal plane, and a movable table to be rotated by an operation of a second actuator. A centering device that can be moved in the width direction to correct the inclination of the band material in the approach direction and the displacement in the width direction; And a pair of position detection sensors for detecting the positions of both side edges of the band-shaped material are provided, and are moved in the width direction by the operation of the third actuator. A width detector provided at a position in front of the centering device. The width detector detects the center of the preceding strip and operates the third actuator. The width detector is moved to the center of the preceding strip, the inclination of the trailing strip in the approaching direction is detected by the tilt detector, the first actuator is operated to rotate the movable table, and the trailing strip is rotated. After correcting the inclination in the approaching direction of the moving member, the width detector detects a displacement in the width direction of the succeeding band member with respect to the preceding band member, and operates the second actuator to move the movable table in the width direction. A centering method for joining strips, characterized in that the gap is corrected.