JPH10323713A - Coil box for hot rolling facility - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a coil box capable of conducting a stable rewinding of a coil even when the supporting units of a hold back roller fail to do a balanced work, by the support of a hold back roller and a hold back plate which can work synchronously. SOLUTION: The coil box comprises the hold back roller 30, with a damper 18, with its operation independent working and driving side at the exit side of the unwinding cradle roller of the coil box, the hold back plate 20 to work follow up said hold back roller 30, with its lower end fitted slackly to the groove on the peripheral surface of the hold back roller 30, the follow-up plate 21, with the hold back plate 20 fixed, thereto positioned within the adjacent area of the upper part of the hold back roller 30, follow-up supporting apparatus 23, with its rotation free support, fit at the both sides of the supporting unit of said follow-up plate 21.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coil box disposed between a rough rolling mill and a finishing rolling mill in a hot rolling facility.

[0002]

2. Description of the Related Art A coil box is disposed between a rough rolling mill and a finishing rolling mill in a hot rolling facility, and a rolled material (strip-shaped sheet material) from the rough rolling mill is wound into a coil in the coil box. After the end of the take-up, the rolled material is transferred downstream while being opened and rewound, and supplied to the finishing mill, thereby preventing the temperature of the rolled material from dropping.

Referring to FIG. 5, such a conventional coil box will be described. When a rolled material (strip-shaped plate material) 11 sent from a rough rolling mill is supplied into a coil box 1 on a table roller 2, While being guided by the guide roller 3, it is bent at a required curvature by the bending roller 4, and is wound on the winding cradle roll 5 by the coils C1 and C2.

When the coil C2 has been wound to a predetermined size (C2), the wound coil C2 is opened and rewound while rewinding.
A dashed-dotted coil C3 on the unwinding cradle roll 6
Unrolled as indicated by C4, the rolled material 11 passes over the intermediate roll 7, rides on a table roller on the downstream side, is transported to the pinch roll 8, and is further supplied to a finishing mill (not shown) further downstream.

[0005] Here, the coil C5, which has become lighter by unwinding, escapes from above the unwinding cradle roll 6 to the downstream by the tensile force of the rolled material 11 from the downstream side, and the weir is located at the position of the holdback roll 10. The coil in a stopped state is shown.

[0006] The conventional escape back hold-back roll 10 is fixedly arranged at an upper position on the downstream side of the intermediate roll 7a, receives and supports the horizontal load of the escaped coil C5 from the downstream side, and at the same time, supports the coil C5. It is provided so as to support the vertical load on the intermediate roll 7a. A holdback plate 9 attached to the holdback roll 10 is arranged in parallel near the upper portion of the holdback roll 10 to prevent the terminal end of the coil C5 from escaping to the downstream side.

In such a coil box 1, the heavy coil is unwound on the unwinding cradle roll 6, and gradually becomes smaller in diameter and becomes lighter. When the coil C4 escapes from the unwinding cradle roll 6, the coil C4 escapes. Coil C5
Collides with the hold-back roll 10 and is blocked, and the coil C5 collides with the hold-back roll 10 by an impact force, whereby the fixedly disposed hold-back roll 1
0 was easily damaged by repeated loading.

[0008]

In the coil box 1 of the conventional hot rolling equipment as described above, the coil runs away to the downstream side and the holdback roll 10 is damaged by the impact force colliding with the holdback roll 10. Although there was a problem that the hold-back roll 10 was resiliently supported, when a shock-absorbing device for elastically supporting the hold-back roll 10 was provided as a means for reducing the impact force, the drive side and the work side of the hold-back roll 10 were operated independently. , Holdback roll 10
However, there is a problem that the holdback plate 9 cannot follow the unbalanced operation.

The present invention solves the above-mentioned problems, and even if the support portions on both sides of the hold back roll operate unbalanced, the hold back plate follows the operation, and the hold back roll and the hold back plate are synchronized. It is an object of the present invention to provide a coil box of a hot rolling facility that can be operated in a stable manner and can stably rewind and convey a coil.

[0010]

In order to achieve the above object, a coil box of a hot rolling facility according to the present invention is provided such that a working side and a driving side are independently provided on an output side of a cradle roll for unwinding the coil box. While providing a holdback roll equipped with an operating shock absorber, the lower end of a holdback plate that operates following the holdback roll is loosely fitted and arranged in a groove provided on an outer peripheral surface of the holdback roll, The hold-back plate is fixed, and follow-up plate support means for rotatably supporting both end support portions of the follow-up plate disposed close to and above the hold-back roll is provided.

[0011] Further, the follow-up plate support means includes a spring which can expand and contract in response to the operation of the holdback roll;
The tracking plate is rotatably supported via a spherical bush capable of coping with torsional displacement.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a coil box of a hot rolling facility according to the present invention will be described in detail with reference to the drawings using embodiments.

FIG. 1 is a side view of a hold-back roll follower according to an embodiment of the present invention, FIG. 2 is a view taken along the line II-II of FIG. 1, and FIG. FIG. 4 is an enlarged view and FIG. 4 is a side view of the vicinity of the coil box. Note that the same parts as those of the conventional device described with reference to FIG. 5 are denoted by the same reference numerals, and redundant description will be omitted.

According to the present invention, when the holdback roll arranged in the coil box is elastically supported by the damper means, even if the holdback roll operates unbalanced due to the impact of the coil, the operation is synchronized with the operation. And a hold-back plate follow-up device capable of following the hold-back plate.

Referring to the drawings, the holdback plate follower 32 according to the present invention is disposed on the exit side of the coil box 1 and pivotally mounted on the upstream side of the support frame 15 as shown in FIG. The arm 16, the holdback roll 30, the damper means 18 and the like can be operated integrally.

1 to 3, reference numeral 15 denotes a rotating arm 16.
A support arm 16 has an upper part mounted on a mounting shaft 17, a rotation arm 16 has an upper part mounted on the support frame 15 with a mounting shaft 17, and a lower part has a holding back roll 30 mounted thereon, and 18 has a mounting shaft 19 at the tip. The shock absorber is a damper that is connected to the rotation arm 16 and has a rear end pivotally supported by the support frame 15 to elastically support the impact force acting on the holdback roll 30 via the rotation arm 16.

Reference numeral 20 denotes a flat (strip) -shaped holdback plate fixed to a plurality of portions of the follower plate 21 by bolts 22, and a lower end portion is loosely fitted in a groove 31 of the holdback roll 30. 21 is a flat plate-like follower plate arranged near and above the holdback roll 30,
The lower portions at both ends are rotatably supported by the follower plate support means 23, and the upper portions are rotatably supported by the rotation arm 16 by the mounting shaft 29 via the support arm 28. Reference numeral 23 denotes follow-up plate support means for rotatably supporting both ends of the follow-up plate 21. A spring 24 which can be extended and contracted on one side with the follow-up plate 21 interposed therebetween, and a fixed plate mounted on the other side via a spherical bush 26. The fixing plate 25 is fixed to the rotating arm 16.

Reference numeral 28 denotes a support arm having one end mounted on a mounting shaft 29 mounted on the rotating arm 16 via a spherical bush and the other end fixed to the upper portion of the follower plate 21. Can be used as a rotation fulcrum.

Reference numeral 30 denotes a hold-back roll whose both ends are pivotally mounted on the rotating arm 16. Grooves 31 are provided at a plurality of positions on the outer peripheral surface of the hold-back roll. Mated.

The holdback plate following device 32
The holdback roll 30 includes the groove 31, the holdback plate 20, the follow-up plate 21, the follow-up plate support means 23, the support arm 28, the mounting shaft 29, and the like.

The other structure is the same as that of the conventional device shown in FIG.

According to the coil box of the hot rolling equipment as described above, when the coils C3 and C4 are rewound and conveyed, the coils C4 and C5 have a small diameter and are pulled downstream to collide with the holdback roll 30, The damper means 18 elastically supports the impact force, so that the support portions on both sides of the holdback roll 30 operate unbalanced.

By this operation, the holdback roll 3
When an unbalanced motion occurs at 0, the holdback plate 20 loosely fitted in the groove 31 of the holdback roll 30 follows and operates synchronously, and at the same time, operates on the follower plate 21 fixed to the holdback plate 20. Is transmitted. At this time, the lower end of the follower plate 21 is rotatably supported by the expansion and contraction of the spring 24 by the follower plate support means 23 and the spherical support of the spherical bush 26, and the upper end of both ends is attached to the rotating arm 16. 29 can be operated as a pivot point.

As described above, the holdback roll 30
Even if an impact force acts on the hold back roll 30 and the unbalanced operation of the hold back roll 30 occurs, the hold back plate 20 follows the operation of the hold back roll 30, and the mounting shaft on the follower plate 21 and the lower follower plate Since the support means 23 is rotatably supported in cooperation with the support means 23, the holdback plate 20 can follow the operation of the holdback roll 30 without being delayed.

It should be noted that the present invention is not limited to the above-described embodiment, and various changes can be made without departing from the scope of the present invention.

[0026]

In summary, according to the coil box of the hot rolling equipment of the present invention, a hold provided with a shock absorbing device in which the working side and the drive side operate independently on the exit side of the cradle roll for unwinding the coil box. A back roll is provided, and the lower end of the hold back plate that operates following the hold back roll is loosely fitted and arranged in a groove provided on the outer peripheral surface of the hold back roll, and the hold back plate is fixed to hold back. Since the follow-up plate disposed close to the upper part of the roll and the follow-up plate supporting means rotatably supporting both ends of the follow-up plate, even if the hold-back roll operates unbalanced, Synchronized with this operation, the hold back plate was able to follow the operation, and the coil was stably wound up to the end of the coil. Then it can be.

[0027] The follower plate support means may include a spring which can expand and contract in response to the operation of the holdback roll.
Since the tracking plate is rotatably supported via a spherical bush that can cope with torsional displacement, the expansion and contraction of the spring and the spherical bush that can cope with torsional displacement operate in conjunction with each other, It has the effect of being able to respond flexibly to operation.

[Brief description of the drawings]

FIG. 1 is a side view of a holdback roll following device according to an embodiment of the present invention.

FIG. 2 is a view taken in the direction of arrows II-II in FIG.

FIG. 3 is a partially enlarged view of the plate supporting means.

FIG. 4 is a side view of the vicinity of the coil box.

FIG. 5 is a schematic side view of a conventional coil box.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Coil box 5 Cradle roll for winding 6 Cradle roll for unwinding 7 Intermediate roll 11 Rolled material 15 Support frame 16 Rotating arm 17 Mounting shaft 18 Damper means 20 Holdback plate 21 Follow-up plate 23 Follow-up plate support means 24 Spring 25 Fixed Plate 26 Spherical bush 27 Bolt 30 Holdback roll 31 Groove 32 Holdback plate follower C1-C5 Coil

Claims (2)

[Claims] 1. A holding back roll provided with a shock absorber for independently operating a working side and a driving side is provided on an output side of an unwinding cradle roll of a coil box, and is operated following the holding back roll. The lower end of the hold-back plate is loosely fitted in the groove provided on the outer peripheral surface of the hold-back roll, and the hold-back plate is fixed, and both ends of the follow-up plate disposed close to and above the hold-back roll. A coil box for hot rolling equipment, comprising a follower plate supporting means for rotatably supporting a support portion. 2. The tracking plate support means is configured to rotatably support the tracking plate via a spring that can expand and contract in response to the operation of the holdback roll and a spherical bush that can support torsional displacement. The coil box for hot rolling equipment according to claim 1, wherein