JPH0718413Y2 - Tension leveler - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a tension leveler for applying tension and bending to a metal strip to correct the flatness defect and to crush and remove an oxide film.

[Conventional technology]

The tension leveler is, for example, for pressing a small-diameter work roll in a state in which tension is applied to the strip and bending and stretching the strip to correct the flatness defect and to remove the scale by crushing. FIG. 4 shows an essential part of an example of such a device. In FIGS. 3 and 4, (101) is a work roll, and a bearing box (103) in which an angular ball bearing is installed
(102) supported by the roller is a backup roll, which is divided in the axial direction and supported by the roll frame (104). (106) is a thrust receiver, and hinge (1
It is pivotally attached to the roll frame (104) via the (05) and has a long hole (106a). Reference numeral (107) is a stud, which penetrates the elongated hole (106a) and is screwed to the roll frame (104). A wing nut (108) is screwed to the stud (107) to receive a thrust receiver ( 106) is fixed. (109)
Is a supporter, which is fixed to the lower end of the thrust receiver (106) and supports the work roll (101) through the bearing box (103) when the strip (S) does not pass through. (11
1) is a deflector roll. In addition, the fourth not shown
The right side of the figure is symmetrical with the figure. When the strip (S) is passed through as shown and tension is applied to the strip (S) by a bridle roll (not shown), the work roll (101) rises until it comes into contact with the backup roll (102). Then, while the stop (S) is running by a bridle roll (not shown), the work roll (101) is pressed down by the roll frame (104) and the backup roll (102), and the strip (S) is bent and stretched. Then, the flatness defect is corrected and / or the oxide coating is crushed.

Since the work roll (101) is heavily consumed by the above work, the work roll (101) is frequently recombined.

To change the work roll (101), remove the wing nut (108) from the stud (107), rotate the thrust receiver (106) upward, and remove the work roll (101) together with the bearing box. Install a new one (or a polished one).

[Problems to be solved by the device]

Although the work rolls are frequently recombined as described above, the number of times they can be polished is limited and their life is short.

However, the bearing box is hardly worn and is integrated with the work roll, so that when the life of the work roll is exhausted, the bearing box is also discarded. Further, since a large number of spare parts for work rolls for replacement are required, the same number of bearing boxes are required, which is inefficient.

The present invention has been proposed to solve the above problems, and an object of the present invention is to provide an apparatus that does not require replacement of a work roll or a bearing box.

[Means for Solving the Problems]

In order to achieve the above-mentioned object, the structure of the tension leveler according to the present invention includes a tension applying means and a running means for a metal strip, and a metal strip that is freely rotated and bent while the metal strip is running. And a tension leveler equipped with a work roll for stretching and stretching, while providing a clamped portion at both shaft ends of the work roll,
A work roll clamping device comprising a clamper having a clamp portion provided at the shaft end for abuttingly matching and clamping the clamped portion of the work roll, and a bearing box that rotatably supports the clamper and freely moves up and down is provided. It is characterized by that.

[Action]

When the flatness of the metal strip is corrected by the tension leveler and / or the oxide film is crushed, the metal strip is passed through the tension leveler and run while applying tension by the tension applying means and the running means. Then, the work roll is pressed down and pressed against the metal strip, and while being rotated, the work roll is bent and stretched to correct the flatness defect and / or crush the oxide film. At this time, when a thrust force acts in one axial direction of the work roll, the clamped part presses the clamp part of one clamp shaft to be clamped, and one bearing box moves vertically to move the clamper and the work piece. The roll rotates concentrically with the roll. When the thrust force acts on the other axial direction, the other clamper and the bearing box operate in the same manner as described above. Further, when replacing the work roll, the bearing box may be rotated and raised together with the clamper to remove the work roll, a new work roll may be incorporated thereafter, and then the bearing box may be lowered to complete the clamping.

〔Example〕

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings. However, the same members as those of the prior art device are designated by the same reference numerals, and duplicate description will be omitted.

In FIGS. 1 and 2, (1) is a work roll, which is provided with convex spherical portions (1a) at both axial ends thereof, and a backup roll (102) is provided by a strip (S) to which tension is applied. ) Is pressed. Reference numeral (2) is a clamper of the work roll clamp device, and a concave spherical surface portion (2a) having the same radius as that of the spherical surface portion (1a) of the work roll (1) is provided at the tip thereof, and the bearing (112) is internally provided. Is mounted on the bearing housing (3). On both sides of the bearing box (3) of this work roll clamp device, the sliding parts (3
a) is provided, and the sliding portion (3a) is fitted in the up-and-down groove (6a) of the thrust receiver (6) so as to be slidable in the vertical direction. (9) is a supporter, which is fixed to the lower end of the thrust receiver (6). The members at the other end of the work roll (1), which is not shown, and in the vicinity thereof are symmetrical to those shown in the drawing. While the apparatus is at rest, both shaft ends of the work roll (1) are supported by the supporter (9).

To correct the poor flatness of the strip (S) and / or to crush the oxide film, the strip (S) should be as shown in the figure.
When the strip (S) is tensioned by bridle rolls (not shown) on the input side and the output side,
The work roll (1) rises until it comes into contact with the backup roll (102), and the spherical parts (2a) of both clampers (2) and bearing boxes (3) are spherical parts (1a) of the work roll (1). It comes in contact with and rises. Then, while the strip (S) is running by a bridle roll (not shown), the work roll (1) is pressed down by the roll frame (104) and the backup roll (102), and the strip (S) is bent and stretched. To do.

If, for example, a thrust force to the left in FIG. 2 acts on the work roll (1) during the above work, the illustrated spherical portion (1a) of the work roll (1) causes the spherical portion (2a) of the clamper (2). )
The clamper (2) is completely concentric with the work roll (1) to clamp the work roll (1), and supports the thrust force while rotating with the work roll (1).

When a thrust force to the right in FIG. 2 acts on the work roll (1), the spherical surface of the work roll (1) on the right side in the drawing presses the spherical surface of the other clamper (not shown). Clamped.

When the work roll (1) is consumed by the above work,
Remove the wing nut (108) from the stud (107) and rotate the thrust receiver (6), bearing box (3) and clamper (2) upward to remove the work roll (1) and replace it with a spare part. To do. It should be noted that the present invention is not limited to the above embodiment, and the spherical surfaces of the work roll and the clamper may be conical surfaces. It can also be applied to a work roll arranged below the strip.

[Effect of device]

As described in detail above, according to the present invention, a clamper supported by a bearing box that freely moves up and down is provided, and the clamped portion at the shaft end of the work roll is clamped by the clamper during the operation of the device. At the time of reassembling, only the work rolls whose clamps are released by stopping the equipment are replaced, so that it is only necessary to discard the work rolls with a short life, and it is possible to use an expensive bearing box with a long life as it is. it can.

In addition, the spare parts of a large number of work rolls for rearrangement need only be the roll part, and the bearing box and the bearing box are not required, so the running cost can be reduced.

[Brief description of drawings]

FIG. 1 is a side view showing an essential part of a tension leveler as an embodiment of the present invention, and FIG. 2 is a sectional view taken along line II-II of FIG. Further, FIG. 3 shows an example of a conventional device,
FIG. 4 is a side view showing the main part of the tension leveler, and FIG. 4 is a sectional view taken along line IV-IV in FIG. 1 ... Work roll, 1a ... Spherical part, 2 ... Clamper,
2a ... Spherical part, 3 ... Bearing box, 3a ... Sliding part, 6 ... Thrust receiver, 6a ... Elevating groove, 102 ... Backup roll, 104 ... Roll frame, 107 ... Plant bolt, 108
... wing nut, S ... strip.

Claims (1)

[Scope of utility model registration request] 1. A tension applying means for a metal strip and a running means,
In a tension leveler equipped with a work roll for freely bending and stretching the metal strip while freely rotating as the metal strip travels, clamped parts are provided at both shaft ends of the work roll. At the same time, there is provided a work roll clamping device including a clamper provided at a shaft end with a clamp portion that abuts and clamps against a clamped portion of the work roll, and a bearing box that rotatably supports the clamper and freely moves up and down. Tension leveler characterized by having.