JP3173647B2 - Metal strip passing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is arranged between rolls used for transporting a metal strip which passes in a regular or reverse direction when passing a metal sheet. The present invention relates to a method of passing a metal strip through a tensioning reel using a threading guide having a support surface that supports the metal strip. The present invention relates to a method of passing a metal band through which a metal band can be moved in a normal size or, if necessary, in a reverse direction without breaking a guide.

[0002]

2. Description of the Related Art In order to process a metal strip, for example, a hot-rolled steel strip (hereinafter, simply referred to as a metal strip) in a facility equipped with a tension reel, for example, by rolling, first, the metal strip is processed. It is necessary to pass the tip to the tension reel. In such equipment, rolls used for transporting the metal strips sequentially sent out are usually arranged in a transport path. In the case where the leading end of the metal band is passed, it is preferable that a passing plate guide having a support surface for supporting the metal band from below during the passing is provided between the rolls. By providing such a passing plate guide, the leading end of the metal strip to be passed can smoothly advance (hereinafter, referred to as a full-size line) between the rolls in the transport path.

[0003]

However, in such a passing plate, the tip of the metal band may be deformed, for example, the tip may be warped downward or upward.
For example, when the winding of the metal belt on the tension reel fails, the tip of the metal strip generally deforms into a downwardly warped shape. Also, after this failure, the leading end may be returned once in the reverse direction (hereinafter referred to as the reverse dimensional line) and then moved to the normal size, and the winding may be attempted again.

[0004] Here, when the tip of the metal band is warped downward and the tip is reversed by the above-mentioned rewinding or the like,
The downwardly warped portion of the leading end is caught by the end portion of the metal plate conveyance support side of the metal plate guide support surface, and in some cases, the metal plate guide is damaged. In particular, in the case of a hard material such as high carbon steel having a thickness of 4 mm or more, there is a high rate of occurrence of such an obstacle due to breakage of the threading guide.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems. Even if the tip of a metal strip passing through is deformed, the metal strip can be formed in a regular size without damaging the guide. It is an object of the present invention to provide a method of passing a metal band through which the front end of the metal band can be passed to a tension reel.

[0006]

SUMMARY OF THE INVENTION The present invention is directed to a method for transporting a metal strip which is used for transporting a metal strip which is directly sized or, if necessary, reversely traversed, when passing a metal strip. Guide having a support surface for supporting the plate from below , and a pinch
Using a roll, in passing plate method for a metal strip passing the plate metal Obisaki end to tension reel, the metal on the support surface
At least the passing plate guide is used so that the tip of the band can be moved up and down.
Also a metal strip conveying destination end and movable, of the conditions have been made by the Seisungyo or Gyakusungyo, the pinch roll open /
In the closed state, the tip is on the entry side of the pinch roll.
Luke, depending on whether the condition is on the outlet side, by which the said metal strip conveying destination end so as to rise Fudo operation is obtained by solving the above problems.

Hereinafter, the operation of the present invention will be briefly described.

First, in the present invention, the metal band is supported between the rolls which are arranged between the rolls used for transporting the metal band which is to be sent in the normal dimension or the reverse dimension as required when passing the metal sheet. A passing plate guide having a support surface is provided. This makes it possible for the leading end of the metal band in the threading to smoothly and precisely move between the rolls.

In the present invention, attention has been paid to the fact that, when passing the metal band, not only the metal band needs to be run in a normal size but also the metal band needs to be run in the opposite direction if necessary. In the case of the reverse running in this way, there is a case where the threading guide is damaged as described above.

For this reason, in the present invention, the end portion of the support surface of the threading guide on the side of the metal belt transfer destination, that is, the end portion of the support surface on the tension reel side (indicated by reference numeral 14a in FIG. 2 described later) can be lowered. The passing plate guide is movable. In addition, a through-plate guide lifting / lowering device that sets the tilt angle of the support surface by tilting the support surface by performing the vertical positioning operation of the end portion of the metal band transfer destination side is used. The vertical positioning operation of the passing plate guide raising / lowering device is performed in accordance with the condition of whether the metal strip is performing the full-size row or the reverse-size row, and the transport condition of the roll.

Therefore, according to the present invention, the end of the metal strip passing through the metal strip is not deformed, and when the metal strip is moved forward or backward, no obstacle is caused by damage to the guide. For example, when the tip of the metal strip is deformed downwardly, and the tip is reversed from the tension reel side to the pass guide, the end of the support face of the pass guide on the metal strip transfer destination side may be used. If the support is lowered and the support surface is inclined, the tip of the metal band in the downwardly warped state does not catch on the end of the metal band transport destination side, and the tip simply loosens the support surface according to the reverse dimension. It only rises. After this, for example, if the metal band is transported to the tension reel by raising the end portion of the support surface of the threading guide on the side of the metal belt transport destination, the metal reel can be threaded to the tension reel. Therefore, according to the present invention, even if the tip of the metal strip is deformed, it is possible to reduce the downtime of the equipment without causing the breakage of the passing plate guide or the like.

[0012] In the present invention, one of the conditions has been made by the positive dimension row or Gyakusungyo the metal strip passing the plate, conditions for opening / closing state of the pin <br/> Chiroru, metal strip At least gold position condition of the tip, i.e., whether the tip is in the entrance side of the pinch rolls, depending on whether the conditions in the delivery side, the strip passing guides
The end of the belt transfer destination side is moved up and down .

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a view showing the configuration of a portion to which the present invention is applied at the exit side of a skin pass mill line for a hot-rolled steel strip.

In FIG. 1, the tip 1a of the steel strip 1 is fed from the left as shown by an arrow A,
It passes between the passing plate guide 14, the upper pinch roll 12, and the lower pinch roll 13 in this order. Thereafter, the tip 1a and the steel strip 1 are sandwiched between the belt of the belt wrapper 17 and the reel surface of the tension reel 11, and are wound around the tension reel 11 in the direction of arrow B.

The upper pinch roll 12 can move up and down as indicated by arrow C, and is raised before the sheet passes. When the steel strip 1 is passed through and the tip 1a passes through the lower pinch roll 13, the upper pinch roll 12 descends and the upper pinch roll 12 rolls as the steel strip 1 on the lower pinch roll 13 runs. .

The passing plate guide 14 is movable about the mounting shaft 14a so that the end of the supporting surface on the side of the metal band transfer destination can be raised and lowered. The passing plate guide 14 is at the position of the rising end in the broken lines in FIGS. The vertically moving cylinder 15 is moved in the direction of arrow D in FIG. 1 so as to rotate the passing plate guide 14 about the mounting shaft 14a in FIG.
2 shows a state in which the passing plate guide 14 indicated by a dashed line is lowered to the lower end. The lifting cylinder 15 is controlled by a solenoid valve in accordance with the following conditions A1 to A3, and the ascending or descending positioning operation of the passage guide 14 is performed.

A1. The steel strip 1 is in the exact line and the pinch roll is open: the passing plate guide 14 is in the raised position.

A2. The steel strip 1 is in the exact line, and the pinch roll is closed: the passing plate guide 14 is in the lowered position.

A3. The steel strip 1 is upside down and the pinch roll is open: the threading guide 14 is in the lowered position.

Note that the open pinch roll is a state in which the upper pinch roll 12 is raised. With pinch roll closing,
The upper pinch roll 12 is lowered, and the steel strip 1 is sandwiched by the upper and lower pinch rolls. Further, when the steel strip 1 is running backward, the pinch roll is controlled so as to be always opened.

First, under the above condition A1, since the leading end 1a is located on the left side of the pinch roll, the passing plate guide 14 is set at the raised position, and after the leading end 1a running in the exact size from the left has passed the support roll 16, The pinch roll can be smoothly reached. Next, in condition A2, the leading end 1a advances to the right from the pinch roll, and tension is applied to the steel strip 1, so that the threading guide 14 is set to the lowered position, whereby the steel strip 1 and the threading guide are moved. Unnecessary friction with 14 is prevented. In the condition A3, the tip 1a deformed due to the reverse running of the steel strip 1 is prevented from being caught on the end of the support surface of the threading guide 14, which is indicated by the reference numeral 14a in FIG. Then, the passing plate guide 14 is set to the lowered position. In addition, when the steel strip 1 is running in reverse, the pinch roll is controlled so as to be always opened.

In the present embodiment, if it fails to wind the leading end 1a between the reel surface of the tension reel 11 and the belt of the belt wrapper 17, the steel strip 1 and the leading end 1a are temporarily reversed, and thereafter, Make a full size line and try winding again. Here, when the winding has failed as described above, the tip 1a is generally deformed into a downwardly warped shape, for example, as shown by a solid steel strip 1 in FIG. For this reason, if the winding is unsuccessful, the leading end 1a is moved backward.
May get caught on the support surface of the hologram.

However, in the present embodiment, the thread guide 14 is lowered under the condition A3 during reverse running, so that the leading end 1a as shown by the solid steel strip 1 in FIG.
Does not catch on the part of the support surface indicated by the broken line 14a. That is, the leading end 1a merely moves up the inclined surface of the slanted support surface of the threading guide 14 indicated by a dashed line while moving backward to the left. As described above, in the present embodiment, by applying the present invention, even if the tip of the metal strip to be passed is deformed, the metal strip is not moved in a regular size or reversed as necessary without damaging the passing guide. Then, the tip of the metal strip can be threaded to the tension reel.

In the present embodiment, the threading guide 14 is shown in FIG.
Or a metal strip fixed to the rising end as shown by the broken line in FIG.
When the front end of the metal band is made to run in the opposite direction by passing through the metal plate, the occurrence rate of the trouble caused by the hooking of the front end 1a is 10%.
Percent. On the other hand, the aforementioned condition A1
When the passing guide 14 was moved down to the alternate long and short dash line in FIG. 2 as required according to A3, the occurrence rate of the failure was zero percent, that is, none. As described above, according to the present embodiment, a remarkable effect of preventing the passage plate guide from being broken can be obtained.

[0026]

According to the present invention, even if the tip of the metal strip passing through is deformed, the metal strip is run in a regular size or, if necessary, in a reverse direction without damaging the guide, and the tip of the metal strip is tensioned. It can be threaded to reels.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a portion to which the present invention is applied in a hot rolling steel strip skin pass rolling line according to an embodiment of the present invention.

FIG. 2 is a side view showing the operation of the threading guide of the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Steel strip 1a ... Tip 11 ... Tension reel 12 ... Upper pinch roll 13 ... Lower pinch roll 14 ... Passing plate guide 15 ... Cylinder for raising / lowering 16 ... Support roll (conveyance roll) 17 ... Belt wrapper

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-5-42323 (JP, A) JP-A-8-192224 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) B21C 47/34 B21B 39/14

Claims (1)

(57) [Claims] 1. A supporting surface which is arranged between rolls used for transporting a metal strip which is normally traversed or reversely traversed when passing a sheet, and which supports the metal strip from below in the sheet passing. strip passing guides, and with a pinch roll, in the sheet passing method for a metal strip passing the plate metal Obisaki end to tension reel, the so metal strip tip on a support surface can be raised and lowered at least in the through-plate guide the metal strip conveying destination end and movable, if that has been made by the Seisungyo or Gyakusungyo conditions, the
Open / closed condition of the pinch roll, the tip is the pin
Depending on whether it is at the entrance or exit of the tyrol ,
Passing plate method of the metal strip, characterized in that the said metal strip conveying destination end to raise the Fudo operation.