JP2012045609A - Equipment for side guide and guide method for metal strip - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide equipment for a side guide and a guide method for a metal strip, which can surely stabilize a coil winding shape.SOLUTION: There is provided the equipment for the side guide arranged on an inlet side of a coiler for winding a strip conveyed along a conveying line, which guides the conveyed strip from the side wherein a plurality of stages of independent side guides 5A, 5B are arranged along the conveying line direction L, respectively.

Description

  The present invention relates to a side guide apparatus for guiding a conveyed strip from the side, and a metal strip guide method. In particular, it is an invention suitable for a technique relating to a side guide in order to stabilize a coil winding shape when a hot-rolled metal strip is wound around a coiler.

  For example, as described in Patent Document 1, the strip exiting the finish rolling mill is transported along a transport line on a hot run table, and wound around a coiler through a pinch roll.

  In addition, a side guide is provided on the coiler entrance side in order to guide the leading end of the strip exiting the finish rolling mill and smoothly guide it to the coiler. In other words, in order to stabilize the coil winding shape, when the end of the strip winds around the coiler, the side of the strip is restrained from both sides by moving the pair of left and right side guides in the center line direction to narrow the opening. And guide.

  Here, in the conventional side guide equipment, only one integrated side guide is disposed for each coiler.

JP-A-3-285716

  Here, the strip tip portion is a free end until the strip tip portion is wound around the coiler by several turns. Therefore, in order to stabilize the coil winding shape, it is desirable to start the strip guide by the side guide as early as possible.

  Also, the strip tip is often bent, and the side guide cannot guide until the strip tip passes the side guide. By the way, if the leading end of the strip comes into strong contact with the side guide, the leading edge of the strip stalls, the material of the subsequent portion catches up and becomes a bellows shape, which may cause troubles that stop the operation.

  From the viewpoint of the guide, it is preferable that the rear end portion of the side guide be disposed as close as possible to the coiler side (pinch roll side). Therefore, if the side guide is arranged away from the coiler, the effect of stabilizing the coil winding shape is reduced.

  The present invention has been made paying attention to the above points, and an object of the present invention is to provide a side guide facility and a guide method thereof that can more reliably stabilize the coil winding shape.

In order to solve the above-mentioned problem, the invention described in claim 1 of the present invention is arranged on the entrance side of a coiler that winds up a strip that has been transported along a transport line. Side guide equipment that guides from the side,
A plurality of independent side guides are arranged along the transport line direction.

Next, the invention described in claim 2 is the equipment of the side guide disposed on the coiler entrance side that winds up the rolled metal strip with respect to the configuration described in claim 1,
The distance between adjacent side guides is set to 1000 mm or less.

  Next, the invention described in claim 3 is the configuration described in claim 1 or claim 2, wherein each side guide extends to the upstream side from the pair of parallel side guides and the tip of each parallel guide. And a pair of introduction side guides having a taper that increases the distance from each other toward the upstream side.

Next, the invention described in claim 4 is a method of guiding a metal strip by a side guide disposed on the coiler entrance side for winding the rolled metal strip,
A plurality of independent side guides are arranged along the transport line direction,
The guide of the metal strip is started in order from the side guide through which the tip of the metal strip has passed.

  According to the present invention, the guide can be started sequentially from the upstream side guide through which the tip of the metal strip has passed. As a result, it is possible to stabilize the strip threadability and the coil winding shape wound around the coiler.

It is a conceptual diagram explaining the rolling equipment provided with the equipment of the side guide which concerns on embodiment based on this invention. It is a top view explaining the installation of the side guide which concerns on embodiment based on this invention. It is a figure explaining the guide method by the side guide which concerns on embodiment based on this invention.

  Next, embodiments according to the present invention will be described with reference to the drawings.

In the present embodiment, a side guide facility in a winding facility in a hot rolling process as shown in FIG. 1 will be described as an example.
That is, as shown in FIG. 1, the strip 2 exiting the final finish rolling mill 1 is transported along a transport line L on a hot run table (not shown), sent to a coiler 4 through a pinch roll 3, and sequentially The coiler 4 is wound up.

(Constitution)
Side guides 5A and 5B are provided on the upstream side of the pinch roll 3 which is the entrance side of the coiler 4. The equipment of the side guides 5A and 5B of the present embodiment is configured by arranging a plurality of independent side guides 5A and 5B along the transport line L, as shown in FIGS. Yes. The side guides 5A and 5B can independently guide the strip 2 from the left and right sides.

  Here, in this embodiment, the case where the two side guides 5A and 5B that are independent from each other is illustrated is illustrated, but the side guides may be three or more steps.

  As shown in FIG. 2, each side guide 5A, 5B extends from the tip of each of the pair of parallel side guides 5Ab, 5Bb to the upstream side, and is spaced from each other toward the upstream side. Are provided with a pair of introduction side guides 5Aa and 5Ba with a taper.

  The distance X between the side guides 5A and 5B adjacent in the transport line L direction is set to 1000 mm or less. Preferably it is 500 mm or less. As long as the operations of the adjacent side guides 5A and 5B do not interfere with each other, the adjacent side guides 5A and 5B may be close to each other and further partially overlap. However, it must be able to operate independently.

  The reason for setting the distance X to 1000 mm or less is as follows. That is, the length in which the bending in the left-right direction occurs at the tip portion 2A of the rolled metal strip 2 is about 1500 mm from experience. Therefore, considering the safety margin of 500 mm and setting the distance X to 1000 mm, which is 500 mm shorter, the leading end 2A of the metal strip 2 is stuck on the next side guide 5B, or is stalled more than necessary. Suppress.

  Further, the taper angle θ of the introduction side guides 5Aa and 5Ba is preferably 30 degrees or less. This is because, when the taper angle exceeds 30 degrees, the tip 2A of the strip 2 stalls more than necessary when the tip 2A of the strip 2 collides. The taper angle θ may be an angle of 1 degree or more, but the smaller the angle, the longer the length of the introduction side guides 5Aa and 5Ba needs to be.

  Moreover, it is preferable that the one-side opening degree difference Y in the front-end | tip part of introduction side guide 5Aa and 5Ba is 25 mm or more.

(Operation other)
The tip position of the strip 2 that has passed through the final finishing mill 1 is tracked by a tip tracking device (not shown). The tip position of the strip 2 is detected with this tracking information.

  And when it detects that the front-end | tip part 2A of the strip 2 passed like FIG. 3 (a)-> (b), the opening degree of the 1st stage side guide 5A is narrowed, and the 1st stage side guide 5A is used. Start the guide.

  Further, when it is detected that the leading end 2A of the strip 2 has passed through the second-stage side guide 5B, the opening degree of the second-stage side guide 5B is narrowed, and the first-stage and second-stage side guides 5A, At 5B, the strip 2 is guided. Subsequently, the strip 2 that has passed through the pinch roll 3 is wound around the coiler 4 in sequence.

  As described above, it is possible to start guiding the tip 2A of the strip 2 from the upstream side with respect to the coiler 4 while suppressing the protrusion of the tip 2A of the strip 2. Moreover, the strip 2 can be guided even when the side guide at the final stage is close to the coiler 4.

  As a result, the stabilization of the strip plate of the strip 2 and the stabilization of the winding shape at least on the inner diameter side of the coil are improved.

  Here, when the first-stage side guide 5A and the second-stage side guide 5B are not independent, the first stage 2A of the strip 2 does not pass through the second-stage side guide 5B. The step side guide 5A cannot be narrowed to the opening for the intended guide (the same applies to the configuration of the above-mentioned Patent Document 1). On the other hand, in this embodiment, since the front end portion 2A of the strip 2 passes through the first-stage side guide 5A, the opening degree for the target guide can be narrowed, so that the plate passing property is improved. .

  Also, the tail end of the strip 2 becomes a free end by passing through the final finishing mill 1, but the tail end of the strip 2 is guided by the first and second stage side guides 5A and 5B. The side is also stably wound on the coiler 4.

  Here, when a steel plate is considered as the strip 2, a thin material (t ≦ 2.01 m), a soft material (TS <40 kgf / m · 2), and a high CT (CT ≧ 620 ° C.) material have low plate rigidity, The plate passing speed is fast. The present invention is particularly effective for such a strip 2 that tends to bend at the tip 2A.

(effect)
As described above, by adopting the present embodiment, it is possible to achieve both the plate passing property of the tip 2A of the strip 2 and the stabilization of the shape of the wound inner and outer periphery of the coil.

  Further, it is possible to reduce the contact of the front end of the strip 2 with the side guides 5A and 5B, and it is possible to prevent troubles and improve the guiding of the plate after passing through the leading edge.

  Further, by individually moving the divided side guides 5A and 5B, it is possible to guide the strip 2 finely, and this can also stabilize the threading plate at the tip of the strip 2.

DESCRIPTION OF SYMBOLS 1 Final finishing mill 2 Strip 3 Pinch roll 4 Coiler 5A, 5B Side guide 5Aa, 5Ba Introduction side guide 5Ab, 5Bb Parallel side guide L Conveyance line X Space | interval Y One side opening difference (theta) Taper angle

Claims (4)

A facility for side guides arranged on the entrance side of the coiler that winds the strip that has been transported along the transport line and guides the strip that has been transported from the side,
A side guide facility comprising a plurality of independent side guides arranged along the transport line direction. A facility for side guides arranged on the inlet side of a coiler for winding a rolled metal strip,
2. The side guide facility according to claim 1, wherein an interval between adjacent side guides is set to 1000 mm or less.   Each side guide includes a pair of parallel side guides and a pair of introduction side guides that extend from the tip of each parallel guide to the upstream side and have a taper that increases in distance from each other toward the upstream side. The equipment of the side guide according to claim 1 or 2, characterized by the above-mentioned. A method of guiding a metal strip by a side guide arranged on the coiler entrance side for winding the rolled metal strip,
A plurality of independent side guides are arranged along the transport line direction,
A method for guiding a metal strip, characterized by starting the guide of the metal strip in order from the side guide through which the tip of the metal strip has passed.

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