JP6825599B2 - Method and device for passing the tip of the metal band - Google Patents

Description

The present invention relates to a plate passing method and an apparatus for stably passing the tip of a metal strip rewound from a coil of a metal strip such as a hot-rolled steel strip or a cold-rolled steel strip through a plate line. Is.

In line equipment that processes and processes metal strips, when the coiled metal strip is discharged from the payoff reel (rewinding the coil), the tip of the metal strip is paired up and down called a pinch roll. It is necessary to sandwich it with the rolls and let it pass through the line equipment. FIG. 8 schematically shows the configuration of such a line equipment entry side.
When the tip of the metal band rewound from the coil enters the line equipment, if the tip of the metal band is warped upward or hangs downward, the metal band is shown in FIG. The tip may interfere with a member in the line equipment (for example, an equipment beam or a gate-shaped equipment as shown in FIG. 9), and the metal band may be bent or the equipment may be damaged. When such a trouble occurs, it takes time to remove the metal band and restore the equipment, and the productivity is lowered.

As one of the methods for preventing the occurrence of the plate passing trouble as described above, as shown in Patent Document 1, there is a method of pulling the tip of the metal band with a plate jig to guide it into the line equipment. However, this method is not realistic because it takes time to pass the jig through the plate path in advance and to attach the jig to the tip of the metal strip, which lowers the production efficiency.
On the other hand, Patent Documents 2 and 3 describe a method of attracting and holding the tip of a steel strip with a magnet and transporting (guidance) it into a line facility.
Further, Patent Document 4 discloses a steel plate tip transfer device that transfers a clamp device that clamps the tip of a steel sheet from the payoff reel side to the welding machine side by a transfer mechanism while the tip of the steel plate is clamped. Has been done. Further, in the same document, it is preferable to clamp the tip portion of the steel sheet so as to be curved in the plate width direction by a clamping device because the rigidity of the tip portion of the steel sheet in the longitudinal direction is increased.

Japanese Unexamined Patent Publication No. 10-999904 Japanese Unexamined Patent Publication No. 2011-143421 Japanese Unexamined Patent Publication No. 7-112211 Japanese Unexamined Patent Publication No. 2005-177832

However, in the methods of Patent Documents 2 and 3, since the structure of the magnet transfer equipment installed in the transfer section is an obstacle, other equipment cannot be installed in the transfer section. Therefore, it cannot be applied to line equipment in which a gate type equipment or the like exists in the transportation section.
Further, since the method of Patent Document 4 requires a clamp device and a transfer mechanism thereof, it becomes a large-scale equipment and the equipment cost is high. Further, as in the methods of Patent Documents 2 and 3, there is a problem that other equipment cannot be installed in the transfer section because the structure of the transfer mechanism installed in the transfer section of the clamp device becomes an obstacle.

Therefore, an object of the present invention is to solve the above-mentioned problems of the prior art and to pass the tip of the metal band rewound from the metal band coil by using a mechanism that is simple and does not interfere with the installation of other equipment. It is an object of the present invention to provide a plate passing method and an apparatus capable of stably passing a plate through a line.

In order to solve the above problems, the plate passing method and apparatus of the present invention are placed on the tip of the metal band rewound from the metal band coil at different positions in the plate width direction on the entrance side of the metal band passing line. By pressing the presser roll and the lower presser roll and pressing and bending the metal strip in cooperation with the upper presser roll and the lower presser roll, the tip of the metal strip is warped in the plate width direction, and the tip of the metal strip is warped. By increasing the flexural rigidity in the plate-passing direction (increasing the cross-sectional coefficient), the orientation of the tip of the metal strip during plate-passing is stabilized, and the gist of this is as follows.

[1] A plate passing method for guiding the tip of the metal strip in the longitudinal direction of the metal strip rewound from the metal strip coil into the passing plate line on the entrance side of the passing plate line of the metal strip.
It is provided with a rotatable upper presser roll (2a) and lower presser roll (2b) capable of rolling on the metal strip surface in contact with the upper surface and the lower surface of the metal strip, respectively, and the upper presser roll (2a) or / And using a metal band presser (1) having two or more lower presser rolls (2b).
The upper presser roll (2a) and the lower presser roll (2b) are pressed against the tip of the metal strip rewound from the metal strip coil at different positions in the plate width direction, and the upper presser roll (2a) and the lower presser roll (2b) are pressed. ) Collaborate to push and bend the metal strip to cause warpage in the plate width direction at the tip of the metal strip, and in this warped state, move the tip of the metal strip to guide it into the through plate line. A method of passing a plate at the tip of a metal strip, which is characterized in that.

[2] In the plate passing method of the above [1], the metal strip holding device (1) has a pair of lower holding rolls (2b) in contact with both side portions sandwiching the central portion in the width direction of the metal strip, and a metal strip. Equipped with an upper presser roll (2a) in contact with the central part in the plate width direction,
The upper presser roll (2a) and the pair of lower presser rolls (2b) are pressed against the tip of the metal strip, and the upper presser roll (2a) and the lower presser roll (2b) cooperate with each other to form the central portion in the width direction of the metal strip. A method of passing a metal strip tip portion, which is characterized in that the tip portion of the metal strip is warped in the plate width direction by pushing and bending.
[3] In the plate passing method of the above [1], the metal strip holding device (1) has a pair of lower holding rolls (2b) in contact with the portions near both ends in the width direction of the metal strip, and the width of the metal strip. Provided with a pair of upper presser rolls (2a) in contact with the inner portion of the pair of lower presser rolls (2b) in the direction.
A pair of upper presser rolls (2a) and a pair of lower presser rolls (2b) are pressed against the tip of the metal strip, and each upper presser roll (2a) and lower presser roll (2b) are made to cooperate to form a metal strip width. A method for passing a metal strip tip portion, which comprises bending a portion near both ends in the direction to cause a warp in the plate width direction at the metal strip tip portion.

[4] In the plate passing method of the above [1], the metal strip holding device (1) has three or more lower holding rolls (2b) in contact with portions spaced in the width direction of the metal strip, and a metal strip. Provided with two or more upper presser rolls (2a) in contact with each portion between two adjacent lower presser rolls (2b) in the width direction.
Two or more upper presser rolls (2a) and three or more lower presser rolls (2b) are pressed against the tip of the metal strip, and the upper presser roll (2a) and the lower presser roll (2b) work together to form a metal strip. A method for passing a metal strip tip portion, which comprises bending a plurality of points in the width direction to cause a warp in the plate width direction at the tip portion of the metal strip.
[5] In any of the plate passing methods [1] to [4] above, the tip of the metal strip supported by the lower presser roll (2b) is pressed down by the upper presser roll (2a) to reduce the tip of the metal strip. A method of passing a plate at the tip of a metal strip, which comprises causing a portion to warp in the plate width direction.
[6] In any of the plate passing methods [1] to [5] above, the metal band is passed in the plate line direction by the pinch roll (3) provided between the payoff reel and the metal band pressing device (1). A method of passing a plate at the tip of a metal strip, which is characterized by being moved.

[7] A plate passing device installed on the entrance side of the metal strip line in order to guide the tip of the metal strip in the longitudinal direction of the metal strip rewound from the metal strip coil into the threading line of the metal strip. ,
It is provided with a rotatable upper presser roll (2a) and lower presser roll (2b) capable of rolling on the metal strip surface in contact with the upper surface and the lower surface of the metal strip, respectively, and the upper presser roll (2a) or / And a metal strip presser (1) having two or more lower presser rolls (2b).
The upper presser roll (2a) and the lower presser roll (2b) are pressed to different positions in the plate width direction of the tip of the metal strip rewound from the metal strip coil, so that the upper presser roll (2a) and the lower presser roll (2b) are pressed. (2b) is a plate passing device at the tip of the metal band, which is configured so that the metal band is pushed and bent in cooperation with each other.

[8] In the plate passing device of the above [7], the metal band pressing device (1) has a pair of lower pressing rolls (2b) in contact with both side portions sandwiching the central portion in the width direction of the metal strip, and a metal band. Equipped with an upper presser roll (2a) in contact with the central part in the plate width direction,
The upper presser roll (2a) and the pair of lower presser rolls (2b) are pressed against the tip of the metal strip, so that the upper presser roll (2a) and the lower presser roll (2b) cooperate with each other in the width direction of the metal strip. A plate passing device at the tip of a metal strip, characterized in that the central portion of the metal strip is configured to be pushed and bent.
[9] In the plate passing device of the above [7], the metal strip holding device (1) has a pair of lower holding rolls (2b) in contact with portions near both ends in the width direction of the metal strip, and a metal strip width. Provided with a pair of upper presser rolls (2a) in contact with the inner portion of the pair of lower presser rolls (2b) in the direction.
A pair of upper presser rolls (2a) and a pair of lower presser rolls (2b) are pressed against the tip of the metal strip, so that the upper presser rolls (2a) and the lower presser rolls (2b) work together to form metal. A plate passing device at the tip of a metal strip, characterized in that the portions near both ends in the width direction of the strip are pushed and bent.

[10] In the plate passing device of the above [7], the metal strip holding device (1) has three or more lower holding rolls (2b) in contact with portions spaced in the width direction of the metal strip, and a metal strip. It is provided with two or more upper presser rolls (2a) in contact with a portion between two adjacent lower presser rolls (2b) in the width direction.
By pressing two or more upper presser rolls (2a) and three or more lower presser rolls (2b) against the tip of the metal strip, the upper presser roll (2a) and the lower presser roll (2b) cooperate with each other. A plate passing device at the tip of a metal strip, which is configured so that a plurality of locations in the width direction of the metal strip can be pushed and bent.
[11] In any of the above-mentioned [7] to [10] plate-passing devices, the tip of the metal strip supported by the lower presser roll (2b) is pressed down by the upper presser roll (2a). A plate-passing device at the tip of a metal strip.
[12] In any of the above-mentioned [7] to [11] plate-passing devices, the upper presser roll (2a) is characterized in that the reduction position in the vertical direction can be adjusted. apparatus.
[13] In any of the plate passing devices [7] to [12] above, a pinch roll (3) for moving the metal band in the plate line direction between the payoff reel and the metal band pressing device (1). A plate passing device at the tip of a metal strip, which comprises.

According to the present invention, on the entry side of the plate passing line of the metal band, the upper presser roll and the lower presser are placed on the tip of the metal band in the longitudinal direction of the metal band unwound from the metal band coil at different positions in the plate width direction. By pressing the rolls and pushing and bending the metal strip in cooperation with the upper presser roll and the lower presser roll, the tip of the metal strip is warped in the plate width direction, and the tip of the metal strip is warped in the plate passing direction. By increasing the deflection rigidity (increasing the cross-sectional coefficient), the orientation of the tip of the metal band at the time of passing the plate can be stabilized, and the tip of the metal band can be stably passed through the plate line. Therefore, it is possible to appropriately prevent the tip of the metal strip from interfering with the members in the line equipment, causing troubles such as the metal strip being bent or the equipment being damaged. Further, the present invention can be carried out by a simple facility in which a metal band pressing device equipped with a non-rotating drive vertical pressing roll is installed on the entrance side of the metal band passing plate line, and the tip of the metal band for stable passing is provided. The installation of other equipment is not hindered in the moving section of the part, and the work can be done in a short time because it is only necessary to press the vertical pressing roll against the tip of the metal band on the entrance side of the metal band passing plate line. It can be done with, and the production efficiency of the metal band is not reduced.

A front view of a metal band pressing device installed on the entrance side of a metal band passing plate line, which shows one embodiment of the method of the present invention. Side view of the metal band pressing device shown in FIG. Explanatory drawing which shows an example of the installation position of the metal band holding device shown in FIGS. 1 and 2 on the entry side of a metal band passing plate line. In the present invention, another embodiment of the metal band pressing device installed on the entrance side of the metal band passing plate line is shown, where FIG. (A) is a front view and FIG. (B) is a side view. In the present invention, another embodiment of the metal band pressing device installed on the entrance side of the metal band passing plate line is shown, where FIG. (A) is a front view and FIG. (B) is a side view. In the present invention, another embodiment of the metal band pressing device installed on the entrance side of the metal band passing plate line is shown, where FIG. (A) is a front view and FIG. (B) is a side view. In the embodiment of the present invention, the minimum pushing amount of the upper presser roll 2a required to stably pass the moving section from the entrance of the steel strip passing line to the 10 m position is investigated for each plate thickness of the hot-rolled steel strip. Graph showing the results Explanatory drawing schematically showing the configuration of the entrance side of the conventional line equipment Explanatory drawing schematically showing a state in which a trouble of bending the steel strip occurs as a result of the tip of the steel strip interfering with a member in the line equipment on the entrance side of the line equipment of FIG.

The plate passing method of the present invention guides the tip of the metal band (tip in the longitudinal direction of the metal band) rewound from the metal band coil into the threading line on the entrance side of the metal band passing line. This method is provided with a rotatable upper presser roll 2a and a lower presser roll 2b capable of rolling on the metal strip surface in contact with the upper surface and the lower surface of the metal strip, respectively, and the upper presser roll 2a. Or / and using the metal band pressing device 1 having two or more lower pressing rolls 2b, the upper pressing roll 2a and the lower pressing roll are placed on the tip of the metal band rewound from the metal band coil at different positions in the plate width direction. By pressing 2b and pushing and bending the metal strip in cooperation with the upper presser roll 2a and the lower presser roll 2b, the tip of the metal strip is warped in the plate width direction, and the metal is warped in the warped state. The tip of the band is moved to guide it into the through plate line.
Here, in the present invention, the metal band tip is a predetermined length portion (for example, a portion from the tip of the metal band to about several meters to a dozen meters) on the tip side of the metal band rewound from the metal band coil. Point to.

Further, the plate-passing device of the present invention is a plate-passing device installed on the entrance side of the plate-passing line in order to guide the tip of the metal band unwound from the metal-band coil into the plate-passing line of the metal band. It is provided with a rotatable upper presser roll 2a and a lower presser roll 2b that can roll on the metal strip surface in contact with the upper surface and the lower surface of the metal strip, respectively, and also has an upper presser roll 2a and / and a lower presser. A metal band pressing device 1 having two or more rolls 2b is provided, and the upper pressing roll 2a and the lower pressing roll 2b are pressed to different positions in the plate width direction of the tip of the metal band rewound from the metal band coil. The upper presser roll 2a and the lower presser roll 2b cooperate with each other to push and bend the metal band.

In the present invention, the upper presser roll 2a and the lower presser roll 2b are pressed against the tip of the metal strip rewound from the metal strip coil at different positions in the plate width direction, and the upper presser roll 2a and the lower presser roll 2b are linked. By working to push and bend the metal band, the tip of the metal band is warped in the plate width direction, and the deflection rigidity of the tip of the metal band in the plate passing direction is increased (increases the cross-sectional coefficient). The shape of the warp in the plate width direction applied by the upper presser roll 2a and the lower presser roll 2b is arbitrary. That is, the applied warpage in the plate width direction is (i) upward warp (curved shape in which both ends of the plate width are raised with respect to the center of the plate width), and (ii) downward warp (plate with respect to the center of the plate width). It may be either a curved shape with both ends lowered), (iii) a warp having two or more peaks or valleys, and the like. Therefore, the arrangement and number of the upper presser roll 2a and the lower presser roll 2b are determined according to the shape of the warp to be applied. For example, in the case of (i), one upper presser roll 2a and a pair of lower presser rolls 2b as in the embodiment of FIG. 1 described later, or a pair of upper presser rolls as in the embodiment of FIG. 2a and a pair of lower presser rolls 2b are used, and in the case of (ii), a pair of upper presser rolls 2a and one lower presser roll 2b (the embodiment of FIG. 1 is an upper presser roll 2a / lower presser). Roll 2b is upside down), or a pair of upper presser rolls 2a and a pair of lower presser rolls 2b (the upper presser roll 2a and the lower presser roll 2b are upside down in the embodiment of FIG. 4) are used. In the case of (iii), a plurality of upper presser rolls 2a and lower presser rolls 2b are used, respectively, as in the embodiments of FIGS. 5 and 6 described later. However, from the viewpoint of the simplicity of the equipment (metal band pressing device 1) and the plate-passability of the tip of the metal band, the above-mentioned form (i) as in the embodiments of FIGS. Further, two or more sets of the upper presser roll 2a and the lower presser roll 2b can be installed adjacent to each other in the plate passing direction.

1 to 3 show an embodiment of the present invention, FIG. 1 is a front view of a metal band pressing device 1 installed on the entrance side of a metal band passing plate line, and FIG. 2 is a side view and a view of the same. 3 is an explanatory view showing an installation position of the metal band pressing device 1 on the entrance side of the metal band passing plate line.
In FIG. 3, A is a metal band passing plate line (for example, line equipment such as a cold rolling line for a metal band and a pickling line), and B is a metal band that holds a metal band coil and is rewound from the metal band coil. This is a payoff reel that pays s to the metal strip line A.
The metal band pressing device 1 is installed on the entrance side of the metal band passing plate line A, and a pinch roll 3 which is a metal band feeding device is provided between the metal band pressing device 1 and the payoff reel B.

The metal band pressing device 1 shown in FIG. 1 includes a support frame 4 installed so as to straddle the metal band passing plate portion on the entrance side of the metal band passing plate line A, and an upper pressinger supported by the support frame 4. It is composed of a roll 2a, a lower presser roll 2b, and the like.
The metal band pressing device 1 of the present embodiment has one upper pressing roll 2a that is in contact with the central portion in the plate width direction on the upper surface of the metal band and a pair that is in contact with both side portions that sandwich the central portion in the plate width direction on the lower surface of the metal band. It has a lower presser roll 2b, and the upper presser roll 2a and the lower presser roll 2b are arranged along the width direction of the metal strip.
The upper presser roll 2a and the lower presser roll 2b are rotatable rolls (non-driving rolls) capable of rolling on the metal strip surface in contact with the upper surface and the lower surface of the metal strip, respectively. Further, the upper presser roll 2a and the lower presser roll 2b are configured such that the roll surface is arcuate in the roll axis direction so that the metal strip can be deformed in the plate width direction without damaging the metal strip surface.
The distance L between the upper presser roll 2a and the lower presser roll 2b in the plate width direction is not particularly limited, but if the distance L is too small, the upper presser required to cause the metal strip to warp in the plate width direction. Since the pressing force of the roll 2a is increased, the scale of the equipment is increased, and the equipment cost and the space used are increased. On the other hand, the distance L must be less than 1/2 of the minimum plate width manufactured on the line. Therefore, when the metal strip is a steel strip, the distance L is preferably about 100 to 300 mm.

A pair of lower presser rolls 2b are rotatably supported by a lower structure portion 41 of a support frame 4 via a bearing 9b. The pair of lower presser rolls 2b can roll on the metal strip surface by frictional force with the metal strip surface in a state of being in contact with the lower surface of the metal strip s (pressed state).
The upper presser roll 2a is supported by the superstructure portion 40 of the support frame 4 via a roll support 5 provided with a reduction means (a reduction cylinder device 50 described later). The roll support 5 is composed of a reduction cylinder device 50 composed of a hydraulic cylinder or the like and an upper rod portion 51 connected to the upper end thereof, and is connected to the upper structure portion 40 of the support frame 4 via the upper rod portion 51. It is held. The upper presser roll 2a is rotatably supported by the operating portion (usually a cylinder rod) of the reduction cylinder device 50 constituting the roll support 5 via the bearing 9a. The upper presser roll 2a can roll on the metal strip surface by a frictional force with the metal strip surface in a state of being in contact with the upper surface of the metal strip s (in a pressed state).

In order to be able to adjust the reduction position of the upper presser roll 2a according to the thickness of the metal strip s through which the plate is passed, the roll support 5 is provided with the support frame 4 (superstructure portion 40) by the following mechanism. It is supported so that the position can be adjusted in the vertical direction.
A guide hole 10 in the vertical direction is formed through the upper structural portion 40 of the support frame 4, and the upper rod portion 51 of the roll support 5 is fitted into the guide hole 10 so as to be slidable up and down.
A guide hole 11 is formed at the upper end of the upper rod portion 51 of the roll support 5 so as to penetrate the upper rod portion 51 in the radial direction, and the upper surface 110 (ceiling surface) of the guide hole 11 is formed from one end of the hole to another. It slopes downward toward the edge.
On the slide base 12 installed in the superstructure portion 40 of the support frame 4, a wedge-shaped slide block 6 for adjusting the reduction position is arranged so as to be inserted into the guide hole 11 so as to be able to move forward and backward (position adjustment). .. The upper structure portion 40 of the support frame 4 is provided with a cylinder device 7 for adjusting the reduction position, which is composed of a hydraulic cylinder or the like, via a support 8, and the slide block 6 is a cylinder device 7 for adjusting the reduction position. By being held by the operating portion (usually a cylinder rod) of the above, it is possible to slide horizontally (advance and retreat) on the slide base 12.

The slide block 6 for adjusting the reduction position has a wedge shape because the upper surface 60 is formed as an inclined surface, and the upper surface 60 is the upper surface 110 of the guide hole 11 in a state of being inserted into the guide hole 11 of the roll support 5. By engaging with, the roll support 5 is held against the support frame 4 (superstructure portion 40). Then, by advancing and retreating the slide block 6 by the cylinder device 7 for adjusting the reduction position, the height of the upper surface 60 of the slide block 6 that engages with the upper surface 110 of the guide hole 11 changes, and the height of the roll support 5 increases. By changing the thickness, the reduction position of the upper presser roll 2a can be adjusted according to the thickness of the metal strip s through which the plate is passed.
In the present embodiment, the metal band pressing device 1 provided with one upper pressing roll 2a and a pair of lower pressing rolls 2b is used. For example, two or more upper pressing rolls arranged in parallel in the plate width direction are used. A metal band pressing device 1 provided with 2a and two or more pairs of lower pressing rolls 2b may be used to impart an upward warp to the tip of the metal band. Further, two or more sets of the upper pressing roll 2a and the pair of lower pressing rolls 2b may be provided adjacent to each other in the plate passing direction.

Hereinafter, a method of passing the tip of the metal strip according to the embodiment of FIGS. 1 to 3 will be described.
Before the metal strip s is passed through the plate, the upper presser roll 2a of the metal strip pressing device 1 installed on the entrance side of the metal strip passing plate line A is in an open state (non-compressed state). In this state, the tip of the metal band rewound from the metal band coil held on the payoff reel B is conveyed to the position of the metal band pressing device 1 by the pinch roll 3, and a pair of metal band s near the tip is conveyed. When it becomes supported by the lower presser roll 2b, it is stopped. Here, when the reduction cylinder device 50 of the roll support 5 that supports the upper presser roll 2a is operated and the upper presser roll 2a presses down the central portion of the metal strip tip portion in the plate width direction, the upper presser foot is pressed against the metal strip tip portion. A plate as shown in FIG. 1 is pressed by a roll 2a and a pair of lower presser rolls 2b, and the upper presser roll 2a and the lower presser roll 2b work together to push and bend the central portion in the width direction of the metal strip. An upward warp in the width direction is imparted to the metal strip s. In this state, the transfer of the metal strip s by the pinch roll 3 is continued, and the tip portion of the metal strip is guided into the metal strip passing plate line A with the warp in the plate width direction. The tip of the metal strip, which is warped in the plate width direction, has increased deflection rigidity in the plate-passing direction, so that it does not warp upward or hang down in the plate-passing direction. It is possible to pass through the inside of A stably. Then, when the tip of the metal band passes through a certain section (for example, about 10 m from the pinch roll 3) in the metal band passing plate line A, the upper presser roll 2a that has pressed down the metal band s is released, and the metal band is released. Return the tip to a state without warping, and then let the plate pass through regularly.
It is also possible to start the reduction of the metal band tip portion by the upper pressing roll 2a without stopping the metal band s.

The moving section in which the tip of the metal strip is maintained in a state in which the tip of the metal strip is provided with a predetermined warp (warp to the extent that stable stripping is possible) is not particularly limited, but is generally pinched. Around 10 m from the roll is preferable. This is because, in general, this moving section has a gate-shaped facility that does not contribute to the transportation of the metal band, and there is a section without a support roll or a guide table that supports the weight of the metal band. On the other hand, in the section (region) after that, there is a pinch roll for transporting the metal band and a clamp of the welding machine, so that it is not necessary to give a warp in order to make the plate pass stably.

Here, how much the tip of the metal strip can be moved with a predetermined warp is determined by the rigidity due to the thickness and material of the metal strip and the pushing amount (compression position) of the upper presser roll 2a. Since they are different, the support height of the roll support 5 is adjusted by sliding the slide block 6 in the guide hole 11 formed in the roll support 5, and the pushing amount of the upper presser roll 2a ( Adjust the reduction position). The amount of pushing of the upper pressing roll 2a is the amount of overlap between the upper end surface of the lower pressing roll 2b and the lower end surface of the upper pressing roll 2a (that is, the upper end surface of the lower pressing roll 2b and the lower end surface of the upper pressing roll 2a). Distance between).

4 to 6 show another embodiment of the metal band pressing device 1 installed on the entrance side of the metal band passing plate line in the present invention, respectively, where FIG. 4A is a front view and FIG. 6B is a front view. Is a side view.
The metal strip holding device 1 of the embodiment of FIG. 4 has a pair of lower holding rolls 2b in contact with portions near both ends in the width direction of the metal strip, and a pair of lower holding rolls 2b inside the pair of lower holding rolls 2b in the width direction of the metal strip. It is provided with a pair of upper presser rolls 2a in contact with the portion (that is, a portion closer to the center of the plate width), and a pair of upper presser rolls 2a and a pair of lower presser rolls 2b are pressed against the tip of the metal strip. , The upper presser rolls 2a and the lower presser rolls 2b work together to push and bend the portions near both ends in the width direction of the metal strip to give the tip of the metal strip a warp in the width direction. is there.

The pair of upper presser rolls 2a included in the metal strip presser device 1 of the present embodiment are supported by the superstructure portion 40 of the support frame 4 via a roll support 5 provided with a reduction means (compression cylinder device 50), respectively. Has been done. The basic configuration of the roll supports 5 is the same as that of the embodiments of FIGS. 1 to 3, but the slide blocks 6 included in the two roll supports 5 are connected by the connecting rod 13 and one cylinder device 7 is connected. It is possible to slide and move in conjunction with the drive of. A cylinder device 7 may be provided for each of the slide blocks 6, and the cylinder devices 7 may be synchronously controlled to slide each slide block 6.
Since the other configurations of the metal band pressing device 1 of the present embodiment are the same as those of the embodiments of FIGS. 1 to 3, they are designated by the same reference numerals and detailed description thereof will be omitted. Further, the method of passing the metal band tip portion using the metal band pressing device 1 is basically the same as that of the embodiment of FIGS. 1 to 3, so detailed description thereof will be omitted.

The metal strip pressing device 1 according to the embodiment of FIGS. 5 and 6 includes three or more lower pressing rolls 2b in contact with portions spaced in the width direction of the metal strip, and two adjacent lower portions in the width direction of the metal strip. It is provided with two or more upper presser rolls 2a in contact with each portion between the presser rolls 2b. Of these, the metal strip presser 1 of the embodiment of FIG. 5 has three lower presser rolls 2b in contact with portions spaced in the metal strip width direction and two lower presser rolls 2b adjacent to each other in the metal strip width direction. It is provided with two upper presser rolls 2a in contact with each portion in between. Further, in the metal strip pressing device 1 of the embodiment of FIG. 6, four lower pressing rolls 2b in contact with portions spaced in the metal strip width direction and two lower pressing rolls 2b adjacent to each other in the metal strip width direction are provided. It is provided with three upper presser rolls 2a in contact with each portion in between.
In these embodiments, two or more upper presser rolls 2a and three or more lower presser rolls 2b are pressed against the tip of the metal strip, and the upper presser rolls 2a and the lower presser roll 2b are made to cooperate to form a metal strip width. By pushing and bending a plurality of points in the direction, the tip of the metal strip is given a warp in the plate width direction (a wavy warp having two or more peaks or valleys).

The two upper presser rolls 2a (FIG. 5) or the three upper presser rolls 2a (FIG. 6) included in the metal strip presser device 1 of the embodiments of FIGS. 5 and 6 each have a reduction means (compression cylinder device 50). It is supported by the superstructure portion 40 of the support frame 4 via the provided roll support 5. The basic configuration of the roll supports 5 is the same as that of the embodiments of FIGS. 1 to 3, but the slide blocks 6 included in the two or three roll supports 5 are connected by the connecting rod 13 and one. By driving the cylinder device 7, the slide can be moved in conjunction with each other. A cylinder device 7 may be provided for each of the slide blocks 6, and the cylinder devices 7 may be synchronously controlled to slide each slide block 6.
Since the other configurations of the metal band pressing device 1 of the embodiments of FIGS. 5 and 6 are the same as those of the embodiments of FIGS. 1 to 3, they are designated by the same reference numerals and detailed description thereof will be omitted. Further, the method of passing the metal band tip portion using the metal band pressing device 1 is basically the same as that of the embodiment of FIGS. 1 to 3, so detailed description thereof will be omitted.

Here, when the embodiments of FIGS. 1 (and 4), 5 and 6 are compared, the magnitude of the deflection rigidity of the tip of the metal band due to the warp applied in the plate width direction is determined by FIG. 1 (and). FIG. 4) <FIG. 5 <FIG. 6. On the other hand, the tip of the metal band has a thin metal band, and the larger the width of the metal band, the more likely it is to bend. Therefore, there is a suitable metal band pressing device 1 according to the "plate thickness ÷ plate width" of the metal band.
Specifically, when (plate thickness ÷ plate width) ≥ 0.002, the simplest metal band pressing device 1 as shown in FIG. 1 (and FIG. 4) is suitable, and 0.001 ≤ (plate). When (thickness ÷ plate width) <0.002, the metal band pressing device 1 as shown in FIG. 5 is suitable, and when (plate thickness ÷ plate width) <0.001, FIG. Such a metal band pressing device 1 is suitable.
There is no particular limitation on the type of metal strip targeted by the present invention, and various metal strips including steel strips can be targeted.

In the equipment configuration shown in FIGS. 1 to 3 (distance L: 300 mm between the upper presser roll 2a and the lower presser roll 2b in the plate width direction), the tip portion of the hot-rolled steel strip in the longitudinal direction is passed through the plate according to the method of the present invention. I guided them into line A and let them pass through. At that time, the minimum pushing amount of the upper presser roll 2a required for stably passing the moving section from the pinch roll of the plate passing line A to the 10 m position was examined for each plate thickness of the hot-rolled steel strip. The result is shown in FIG. That is, by setting the pushing amount (compression position) of the upper presser roll 2a according to the plate thickness of the hot-rolled steel strip as shown in FIG. 7, and guiding the tip of the hot-rolled steel strip into the plate line A. , It was possible to completely prevent the occurrence of board passing trouble in the moving section from the entrance of the board passing line A to the position of 10 m.

1 Metal band presser 2a Upper presser roll 2b Lower presser roll 3 Pinch roll 4 Support frame 5 Roll support 6 Slide block 7 Cylinder device 8 Support 9a, 9b Bearing 10 Guide hole 11 Guide hole 12 Slide base 13 Connecting rod 40 Upper Structural part 41 Lower structural part 50 Cylinder device for reduction 51 Upper rod part 60 Upper surface 110 Upper surface A Metal band Passing plate line B Payoff reel s Metal band

Claims (13)

This is a plate passing method for guiding the tip of the metal band in the longitudinal direction of the metal band rewound from the metal band coil into the plate passing line on the entrance side of the metal band passing line.
It is provided with a rotatable upper presser roll (2a) and lower presser roll (2b) capable of rolling on the metal strip surface in contact with the upper surface and the lower surface of the metal strip, respectively, and the upper presser roll (2a) or / And using a metal band presser (1) having two or more lower presser rolls (2b).
The upper presser roll (2a) and the lower presser roll (2b) are pressed against the tip of the metal strip rewound from the metal strip coil at different positions in the plate width direction, and the upper presser roll (2a) and the lower presser roll (2b) are pressed. ) Collaborate to push and bend the metal strip to cause warpage in the plate width direction at the tip of the metal strip (however, warpage due to elastic deformation), and the tip of the metal strip moves in the state of this warpage. A method of passing a plate at the tip of a metal band, which is characterized in that the metal strip is guided into the plate passing line. The metal strip holding device (1) has a pair of lower holding rolls (2b) in contact with both side portions sandwiching the central portion in the width direction of the metal strip and an upper holding roll (2a) in contact with the central portion in the width direction of the metal strip. )
The upper presser roll (2a) and the pair of lower presser rolls (2b) are pressed against the tip of the metal strip, and the upper presser roll (2a) and the lower presser roll (2b) cooperate with each other to form the central portion in the width direction of the metal strip. The method for passing a metal strip tip according to claim 1, wherein the tip of the metal strip is warped in the plate width direction by pushing and bending. The metal strip holding device (1) is inside a pair of lower holding rolls (2b) in contact with the portions near both ends in the width direction of the metal strip and a pair of lower holding rolls (2b) in the width direction of the metal strip. With a pair of upper presser rolls (2a) in contact with the part of
A pair of upper presser rolls (2a) and a pair of lower presser rolls (2b) are pressed against the tip of the metal strip, and each upper presser roll (2a) and lower presser roll (2b) are made to cooperate to form a metal strip width. The method for passing a metal strip tip according to claim 1, wherein the tip of the metal strip is warped in the width direction by pushing and bending the portions near both ends in the direction. The metal strip holding device (1) has three or more lower holding rolls (2b) in contact with portions spaced in the width direction of the metal strip, and two adjacent lower holding rolls (2b) in the width direction of the metal strip. With two or more upper presser rolls (2a) in contact with each part in between
Two or more upper presser rolls (2a) and three or more lower presser rolls (2b) are pressed against the tip of the metal strip, and the upper presser roll (2a) and the lower presser roll (2b) work together to form a metal strip. The method for passing a metal strip tip according to claim 1, wherein the tip of the metal strip is warped in the width direction by pushing and bending a plurality of locations in the width direction. Claims 1 to 1, wherein the tip of the metal strip supported by the lower presser roll (2b) is pressed down by the upper presser roll (2a) to cause the tip of the metal strip to warp in the plate width direction. The method for passing a metal strip tip according to any one of 4. The metal band according to any one of claims 1 to 5, wherein the metal band is moved in the plate line direction by a pinch roll (3) provided between the payoff reel and the metal band pressing device (1). How to pass the plate at the tip. A plate passing device installed on the entrance side of the metal strip line in order to guide the tip of the metal strip in the longitudinal direction of the metal strip rewound from the metal strip coil into the threading line of the metal strip.
It is provided with a rotatable upper presser roll (2a) and lower presser roll (2b) capable of rolling on the metal strip surface in contact with the upper surface and the lower surface of the metal strip, respectively, and the upper presser roll (2a) or / And a metal strip presser (1) having two or more lower presser rolls (2b).
The upper presser roll (2a) and the lower presser roll (2b) are pressed to different positions in the plate width direction of the tip of the metal strip rewound from the metal strip coil, so that the upper presser roll (2a) and the lower presser roll (2b) are pressed. (2b) cooperates to push and bend the metal band, and the tip of the metal band is configured to cause warp in the plate width direction (however, warp due to elastic deformation). The plate passing device of the part. The metal strip holding device (1) has a pair of lower holding rolls (2b) in contact with both side portions sandwiching the central portion in the width direction of the metal strip and an upper holding roll (2a) in contact with the central portion in the width direction of the metal strip. )
The upper presser roll (2a) and the pair of lower presser rolls (2b) are pressed against the tip of the metal strip, so that the upper presser roll (2a) and the lower presser roll (2b) cooperate with each other in the width direction of the metal strip. The plate passing device for a metal strip tip according to claim 7, wherein the central portion of the metal strip is configured to be pushed and bent. The metal strip holding device (1) is inside a pair of lower holding rolls (2b) in contact with the portions near both ends in the width direction of the metal strip and a pair of lower holding rolls (2b) in the width direction of the metal strip. With a pair of upper presser rolls (2a) in contact with the part of
By pressing a pair of upper presser rolls (2a) and a pair of lower presser rolls (2b) against the tip of the metal strip, the upper presser rolls (2a) and the lower presser rolls (2b) cooperate with each other to metal. The plate passing device for a metal strip tip according to claim 7, wherein the portions near both ends in the strip width direction are configured to be pushed and bent. The metal strip holding device (1) has three or more lower holding rolls (2b) in contact with portions spaced in the width direction of the metal strip, and two adjacent lower holding rolls (2b) in the width direction of the metal strip. With two or more upper presser rolls (2a) in contact with the intervening part,
By pressing two or more upper presser rolls (2a) and three or more lower presser rolls (2b) against the tip of the metal strip, the upper presser roll (2a) and the lower presser roll (2b) cooperate with each other. The plate passing device for a tip portion of a metal strip according to claim 7, wherein a plurality of locations in the width direction of the metal strip are configured to be pushed and bent. The tip of the metal strip according to any one of claims 7 to 10, wherein the tip of the metal strip supported by the lower presser roll (2b) is pressed down by the upper presser roll (2a). Boarding device. The plate passing device for a metal strip tip according to any one of claims 7 to 11, wherein the upper presser roll (2a) has an adjustable reduction position in the vertical direction. The metal band according to any one of claims 7 to 12, wherein a pinch roll (3) for moving the metal band in the plate line direction is provided between the payoff reel and the metal band pressing device (1). A plate passing device at the tip.

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