JPS611401A - Method and equipment for passing strip in of floating roll type different speed rolling mill - Google Patents

Abstract

PURPOSE:To execute easily passing of a strip by a floating roll type different speed rolling mill, by moving a floating roll and a guide roll. CONSTITUTION:Work rolls 1, 3 are separated from each other relatively, the tip part of a strip 26 of an uncoiler 2 is installed to a coiler 20 through the roll 3 and the first guide roll 11, and it is wound by a prescribed length. Subsequently, the strip 26 wound to the coiler 20 is rewound and the strip 26 between the rolls 3, 11 is moved from a position (a) of a floating roll 2 to a position (b) and extruded to between the rolls 3, 1 the strip 26 is wound to the semi-peripheral surface of a delivery B of the roll 3, and also the roll 2 is set to a rolling position. The roll 1 is returned to the rolling position, and the roll 11 is turned to a position (d) centering around the axis of the second guide roll 13. Subsequently, an arm 14 and a lever 12 are turned centering around a revolving shaft 14a, the roll 11 and the roll 13 are moved to a position (e) and a position (f), respectively, the strip 26 is wound to the semi-peripheral surface of the delivery B of the roll 1, and passing of a strip is completed.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and device for threading a floating roll type variable speed rolling mill.

A floating roll type variable speed rolling mill rolls a coiled strip loaded into an unwinder through the exit half circumference of one work roll, the entry half circumference of the floating roll, and the exit half circumference of the other work roll. The strip is rolled by guiding it to the winder and rotating the other work roll at a faster rotational speed than the one work roll. At the start of rolling, the coil A-shaped strip is fed out from the unwinder. 1) JJ between one work roll and the floating roll, and a detour as described above had to be made between the floating roll and the other work roll, making threading difficult.

The present invention deals with the above-mentioned problem, and the coiled strip loaded in the unwinding machine is connected to the exit half surface of one work roll, the entry half surface of the floating roll, and the exit half surface of the other work roll. In order to start rolling in a floating roll type different speed rolling mill that rolls the strip, the strip is guided to the winding machine via the side half circumference, and the other work roll is also rotated at a high rotational speed to roll the strip. The work rolls are separated from each other, and the tip of the coiled strip loaded in the unwinding machine is passed through one of the work rolls and a guide roll disposed on the exit side of the same work roll. The strip is attached to the winder, and then the tip end of the strip is wound on the winder to a predetermined length, and then the strip is unwound on the winder while one of the work rolls and the guide is wound. The strip between the rolls is pushed out between one and the other work rolls through the full floating roll, the strip is wrapped around the exit half circumference of one of the work rolls, and the floating roll is set at the full rolling position. A floating roll type characterized in that the roll is returned to the rolling position, the guide roll moves along the other work roll, and the strip r is wrapped around the exit half circumference of the other work roll to complete threading. (Regarding the strip threading method of a different speed rolling mill), its purpose is to pass the coiled strip of the unwinding machine between one work roll and a floating roll, and between the floating roll and the other work roll. Another object of the present invention is to provide a method for threading a sheet in a floating roll type variable speed rolling mill, which allows the sheet to be easily passed to a state ready for rolling.

Next, the threading method and device for a floating roll type variable speed rolling mill of the present invention will be explained using an embodiment shown in FIGS. 1 to 5. (1) and (3) are upper and lower work rolls, ( 2) is a floating roll, (4) is a fixed guide fixed to the entry side (A) of work rolls (1) and (3), and (6) is moved by the same fixed guide (4) in the front and back direction. Possible movement guide, (
5) is a fluid pressure cylinder for moving the moving guide l-''(6)', and (8) is a pair of left and right floating roll support arms, and the tips of the arms (8) are formed in a bifurcated shape. hand,
Both ends of the floating roll (2) are removably supported there. In addition, (8α) is a rotating shaft fixed to the base end (lower end) of the pair of left and right floating roll support arms (8), and the rotating shaft (8α) is rotatably supported by the frame (221) of the rolling mill. In addition, (8b) is a bracket fixed to the rotating shaft (8α), and (7) is a hydraulic cylinder, which is pivotally connected to the frame (22) of the rolling mill, and a piston rod. The tip of the above bracket (8b
), and when the hydraulic cylinder (7) is actuated in the extension direction, the floating roll support arm (8) moves from the solid line position to the two-dot chain line position (the floating roll (2) moves from the example position to the two-dot chain line position). (moves to position (a) beyond C1'fir). Also, (9) is the presser roller,
aO) is a fluid pressure cylinder for moving the intervening roller (9) back and forth with respect to all working rollers (3), and the same fluid pressure cylinder 700) is a fluid pressure cylinder for moving the intervening roller (9) back and forth with respect to all working rollers (3), and the same fluid pressure cylinder 00) is used to move the above-mentioned pair of left and right floating roller support arms (
8) is placed in a position that does not interfere with the Also α
a is a pair of left and right swinging arms that are pivotally connected to the rolling mill frame (2) through a rotation axis CMtL)'fr; α~ is rotatably attached to the tip (lower end) of each swinging arm αa; The second guy 10-ra (121 is the same swing arm α~
A pair of left and right levers, αυ, are rotatably attached to the tips (lower ends) of the second guide roller (131) at the tips of the levers, (131).
4b) Draw out the connecting rod that connects each swinging arm at 0 slope, ←
9 is a fluid pressure cylinder pivotally connected to the connecting rod (14b), Q
B is a presser roll, (c) is a frame that supports the interposed roll Qalt so that it can be raised and lowered, aη is a fluid pressure 7 cylinder pivotally connected to the same frame (c), and Q6) is a fluid for raising and lowering the presser roll. In the pressure cylinder, the fluid pressure cylinder α
The tip of the piston rod 9 is pivotally connected to the upper end of the lever (121), and the tip of the piston rod of the fluid pressure cylinder Q'7 is pivotally connected to the swing arm α. When the pressure cylinder 051 is operated in the expansion and contraction direction,
When the lever (one) is actuated in the extending and retracting direction of the hydraulic cylinder an-i so that it rotates around the axis of the second guide roll, the swinging arm (l→ is centered around the axis of rotation (14a)). In addition, (1 scratch is the deflector roll, (24α) C24b) are the upper and lower tube wipers, and the upper tube wiper (24α) can be raised and lowered. It's a gauge.

Next, the operation of the threading device of the floating roll type different diameter rolling mill will be explained. Move the work roll (1) upward. In addition, the coiled strip (c) loaded in the unwinding machine (2I) is gradually unwound and sent directly below the work roll (3) while sliding on the fixed guide (4) and moving guide (6). Dig in.

At this time, the fluid pressure cylinder 00) is operated in the extension direction to press the tip of the band plate (c) through the presser roll (9) against the work roll (3). In addition, when this state is reached, the work roll (3) is rotated counterclockwise, passes through the upper surface of the first guide roller aυ, and feeds the presser roll 0 → downward, and then the presser roll 8 is lowered, and the strip Bend the tip of the QO downward and wrap it around the take-up drum of the winder through the deflector roll (ll') (see Figure 2). At this time, the strip The length necessary for
The two ends of the floating roll support arm (8) are dropped into the forked part provided at the tip of the floating roll support arm (8), and then the hydraulic cylinder (force is applied in the extension direction to move the same arm (8) around the rotation axis (8α) Rotate counterclockwise to move the floating roll (2) from the t(7) position to the rolling center (C)?cross fct A) position (rolling position)
Move it to the strip CI! 6) Wrap it around the entry side (N half circumference surface) of the fully floating roll (2). At this point, the strip plate (26) wound around the winding drum of the winding machine Ω■ is rolled out and the work roll is rolled. (3) is rolled around the exit side (B) half circumferential surface of the work roll. The roll support arm (8) is rotated clockwise around the rotation axis (8α) to return it to the position of the arm (8). At this time, the floating roll (2) is at position (A) @ ( (rolling position) and becomes n multiplied by 11 (hereinafter, the third
(see figure). Next, the fluid pressure cylinder u51τ is operated in the extension direction, and the lever (second guide roll 03) is
Rotate clockwise around II pure' and raise the first car 1 troll fo'+v hill 1 position. At this time as well, the strip plate (2) wrapped around the winding drum of the 1 winder (A)
6) is played out (see Figure 4 above). Next, the fluid pressure cylinder α7I is operated in the extension direction, and the swing arm (14
) and the lever (rotate clockwise around the entire center of the 1cra rotation axis (14α), and move the first guide roll to the ←υ (2) position, the second guide roll to the 0 (to) 2 (to) position, Move each strip plate (23) and wrap it around the output side (B) half circumference of the work roll (1).
The band plate (26) wrapped around the winding drum of G is fed out. Also, at this time, the second guide roll (]3 is in contact with the strip plate (4) near the first guide roll αυ (see Figure 5).The swing arm (+41 and the lever (Each position in MiJ of 12+ is regulated by a stopper (not shown).
The purpose of providing the guide roll near the guide roll is to stabilize the running of the strip (2G) during rolling. In addition, the first guide roller aυ is provided with a crown to prevent the strip plate from meandering evenly during rolling. Once completed, the presser roll Q81 is lowered by the fluid pressure cylinder (16), the strip plate (26) is set at the (26'') position shown in Figure 1, and the work roll (1) is lower than the work roll (2). It rotates at a high rotational speed and moves on to rolling work. Note that (26') in Figure 1 is the same as in Figure 2.3, (26') is in Figure 4, and (26'') is in Figure 5. , indicating the strip position.

In the present invention, the coiled strip loaded in the unwinding machine as described above is wound through the exit half circumference of one work roll, the entry half circumference of the floating roll, and the exit half circumference of the other work roll. In a floating roll type variable speed rolling mill that rolls a strip by rotating the other work roll at a faster rotational speed than one of the work rolls, the work rolls are rotated relative to each other before rolling starts. The tip of the coiled strip loaded into the unwinding machine while being separated from the other is mounted on the winding machine via one work roll and a guide 10 disposed on the exit side of the same Shiba roll, Next, the tip end of the strip is wound to a predetermined length on the same winder, and then the strip between one of the work rolls and the guide roll is floated while unwinding the entire strip wound on the same winder. The strip is pushed out between one and the other work rolls through the rolls, and the strip is wrapped around the exit side half circumference of one work roll, and the floating roll is set in the rolling position.Then, the work roll is returned to the rolling position, and the guide roll is pushed out. is moved along the other work roll, and the strip is wrapped around the exit half surface of the other work roll to complete one sheet metal roll. There is an effect that the sheet can be easily passed between the floating roll and the other work roll to a state where it can be rolled.

Further, in the present invention, all of the coiled strips loaded in the unwinding machine are transferred to the winding machine through the exit half circumference of one work roll, the entry half circumference of the floating roll, and the exit half circumference of the other work roll. In a floating roll type different speed rolling mill that rolls a strip by guiding the work roll and rotating the other work roll at a faster rotation speed than one work roll, moving between one and the other work rolls that are relatively separated from each other. A floating roll support member that fully supports the floating roll when moving in the opposite direction and releases the floating roll when moving in the opposite direction, and a guide roll that moves along the exit side half circumference of the other work roll after the floating roll is set. It is characterized in that it is disposed on the side, and has the effect of smoothly carrying out the above-mentioned sheet passing method.

In addition, the present invention provides a coiled strip loaded in an unwinding machine that passes through the exit half circumference of one work roll, the entry half circumference of the floating roll, and the exit half circumference of the other work roll, and then passes the coiled strip into the winder by 4 tons. In a floating roll type different speed rolling mill that rolls a strip by rotating the other work roll at a faster rotational speed than one work roll with a floating roll support member that supports the floating roll when moving in the opposite direction and releases the floating roll when moving in the opposite direction; and a first guide 90-ru that moves along the exit half circumferential surface tc of the other work roll after setting the floating roll; A second guide roll that moves the exit side of the first guide roll in the direction of the other work roll after the first guide roll is set is disposed on the exit side of the work roll. In addition to being able to carry out the above-mentioned strip threading method smoothly, there is an effect that the running of the strip during rolling can be stabilized.

Although the present invention has been described above with reference to embodiments, it goes without saying that the present invention is not limited to such embodiments, and that various design modifications can be made without departing from the spirit of the present invention. .

[Brief explanation of drawings]

FIG. 1 is a side view showing one embodiment of a sheet passing device for a floating roll type variable speed rolling mill according to the present invention, and FIGS. 2 to 5 are explanatory diagrams of its operation. (1) (3)... Work roll, (21... Floating roll, 0υ... First guide 90-ru, (13)
... second guide roll, (4) ... winder, c! 1
)... Unwinding machine, (a)... Band plate, (A)... Entry side, (Evening... Output side, (A)... Floating roll (2) rolling device.

Claims (1)

[Claims] 1) A coiled strip loaded in an unwinding machine is wound through the exit half surface of one work roll, the entry half surface of the floating roll, and the exit half surface of the other work roll. In a floating roll type variable speed rolling mill that rolls a strip by guiding it to a rolling mill and rotating the other work roll at a faster rotational speed than one work roll, when starting rolling, each of the work rolls is rotated. The tips of the coiled strips, which are relatively spaced apart and loaded into the unwinding machine, are attached to the winding machine via one work roll and a guide sail disposed on the exit side of the work roll, and then attached to the winding machine. Wind the tip end of the strip plate to the same winder for a predetermined length,
Next, while unwinding the strip wound on the same winder, the strip between one work roll and the guide roll is pushed out between one and the other work rolls via a floating roll, and the strip is moved to one work roll. The strip is wrapped around the exit side half circumference of the roll, and the floating roll is set to the rolling position.Then, the work roll is returned to the rolling position, and the guide roll is moved along the other work roll, so that the strip is wrapped around the exit side of the other work roll. A sheet threading method for a floating roll type variable speed rolling mill characterized in that the sheet threading is completed by wrapping the sheet around the side half circumference. 2) The coiled strip loaded in the unwinding machine is guided to the winding machine via the exit side half circumference of one work roll, the entry side half circumference of the floating roll, and the exit side half circumference of the other work roll. In a floating roll type different speed rolling mill that rolls a strip by rotating two work rolls at a faster rotational speed than one of the work rolls, floating rolls are used when moving between one work roll and the other work roll that are relatively separated from each other. a floating roll support member that supports the roll and releases the floating roll when moving in the opposite direction;
A sheet threading device for a floating roll type variable speed rolling mill, characterized in that a guide roll that moves along the exit half circumference of the other work roll after the floating roll is set is disposed on the exit side of the work roll. 3) The coiled strip loaded in the unwinding machine is guided to the winding machine via the exit half circumference of one work roll, the entry half circumference of the floating roll, and the exit half circumference of the other work roll. In a floating roll type different speed rolling mill that rolls a strip by rotating two work rolls at a faster rotational speed than one of the work rolls, floating rolls are used when moving between one work roll and the other work roll that are relatively separated from each other. a floating roll support member that supports the roll and releases the floating roll when moving in the opposite direction;
After the floating roll is set, a first guide roll moves along the exit side half circumference of the other work roll, and after the first guide roll is set, the exit side of the first guide roll is moved along the exit side of the other work roll. 1. A sheet threading device for a floating roll type variable speed rolling mill, characterized in that a second guide roll that moves in the direction is disposed on the exit side of the work roll.