JP4795256B2

JP4795256B2 - Switching method of pass line in continuous line of metal strip

Info

Publication number: JP4795256B2
Application number: JP2007015680A
Authority: JP
Inventors: 誠山口; 宏幸中島; 茂樹谷口; 賢一芦田; 祐司新田
Original assignee: JFE Steel Corp; JFE Mechanical Co Ltd
Current assignee: JFE Steel Corp; JFE Denki Corp
Priority date: 2007-01-26
Filing date: 2007-01-26
Publication date: 2011-10-19
Anticipated expiration: 2027-01-26
Also published as: JP2008178900A

Description

鋼帯の連続処理ラインなどのような金属帯の連続ラインにおいて、金属帯を選択的に通板させる２つのパスライン部を切り替えるための方法に関する。 The present invention relates to a method for switching two pass line portions for selectively passing a metal band in a continuous line of a metal band such as a continuous processing line of a steel band.

鋼帯の連続処理ラインのなかには、鋼帯を選択的に通板させる２つのパスライン部を備え、この２つのパスライン部を適宜切り替えて操業するものがある。例えば、冷延鋼帯とステンレス鋼帯の両方の焼鈍処理を行う連続焼鈍ライン（ＣＡＬ）では、連続焼鈍設備の下流側に、ステンレス鋼帯用の酸洗設備を備えたパスライン部と、このパスライン部をバイパスするための冷延鋼帯用のパスライン部を設け、処理する鋼帯（ステンレス鋼帯・冷延鋼帯）に応じてパスラインを切り替えて操業が行われる。また、鋼帯を選択的に通板させる２つのパスライン部がそれぞれ処理設備を備え、この２つのパスライン部を適宜切り替えて鋼帯の処理を行う場合もある。 Some continuous processing lines for steel strips include two pass line portions for selectively passing steel strips, and the two pass line portions are appropriately switched for operation. For example, in a continuous annealing line (CAL) for annealing both a cold-rolled steel strip and a stainless steel strip, a pass line portion equipped with a pickling facility for a stainless steel strip on the downstream side of the continuous annealing facility, and this A pass line portion for a cold-rolled steel strip for bypassing the pass line portion is provided, and the operation is performed by switching the pass line according to the steel strip to be processed (stainless steel strip / cold-rolled steel strip). In addition, there are cases where the two pass line portions for selectively passing the steel strip are each provided with a processing facility, and the processing of the steel strip is performed by appropriately switching the two pass line portions.

このような２つのパスライン部の切替方式に関しては、例えば、所定の処理設備を有するパスライン部（ｐ1）と、その処理設備をバイパスするためのパスライン部（ｐ2）を有する連続ラインにおいて、２つのパスライン部（ｐ1），（ｐ2）の分岐部の上流側と合流部の下流側に、それぞれ鋼帯の切断装置と鋼帯接続用の溶接装置を設けるとともに、２つのパスライン部（ｐ1），（ｐ2）の分岐部と合流部に、鋼帯の方向転換用のデフレクター装置を設け、前記切断装置と溶接装置による鋼帯の切断・接合と、デフレクター装置による鋼帯の案内・方向転換により、両パスライン部（ｐ1），（ｐ2）の切替を行うようにしたものが、特許文献１において提案されている。
特開平５−３１５１８号公報 Regarding such a switching method of two pass line parts, for example, in a continuous line having a pass line part (p1) having a predetermined processing facility and a pass line part (p2) for bypassing the processing facility, A steel strip cutting device and a welding device for connecting the steel strip are provided on the upstream side of the branch portion of the two pass line portions (p1) and (p2) and the downstream side of the joining portion, respectively, and two pass line portions ( A deflector device for changing the direction of the steel strip is provided at the junction and junction of p1) and (p2). Cutting and joining the steel strip using the cutting device and the welding device, and guiding and direction of the steel strip using the deflector device Patent Document 1 proposes switching both path line portions (p1) and (p2) by conversion.
JP-A-5-31518

しかしながら、特許文献１の切替方式は、２つのパスライン部（ｐ1），（ｐ2）の分岐部側と合流部側の各々に、鋼帯の切断装置、溶接装置及びデフレクター装置を設ける必要があるため、設備コストが大きくなる問題がある。
また、処理設備を備えたパスライン部（ｐ1）からバイパスであるパスライン部（ｐ2）に切り替える場合、切替時点でパスライン部（ｐ1）内にあった鋼帯部分は、次の切替時までそのままパスライン部（ｐ1）内に残留させられるが、この残留中に処理設備内の処理液などによる汚染や錆の発生などがあった場合には、次の切替時に当該鋼帯部分がライン下流側の搬送された際に、パスラインを汚染してしまい、製品の品質に悪影響を与えるおそれがある。 However, the switching method of Patent Document 1 needs to provide a steel strip cutting device, a welding device, and a deflector device on each of the branching portion side and the merging portion side of the two pass line portions (p1) and (p2). Therefore, there is a problem that the equipment cost increases.
Moreover, when switching from the pass line part (p1) provided with the processing equipment to the pass line part (p2) that is a bypass, the steel strip part that was in the pass line part (p1) at the time of switching is until the next switching. Although it remains in the pass line part (p1) as it is, if there is contamination or rusting due to processing liquid in the processing equipment, the steel strip part will be downstream in the line at the next switching. When it is transported on the side, it may contaminate the pass line and adversely affect the quality of the product.

したがって本発明の目的は、金属帯の連続ラインにおいて２つのパスライン部を選択的に切り替えるための方法であって、少ない設備コストで且つライン内の汚染などの問題を生じることなく、効率的にライン切替を行うことができる方法を提供することにある。 Accordingly, an object of the present invention is a method for selectively switching two pass line portions in a continuous line of a metal band, which can be efficiently performed at a low equipment cost and without causing problems such as contamination in the line. It is to provide a method capable of performing line switching.

上記課題を解決するための本発明の特徴は以下のとおりである。
［1］ライン内に、切替により金属帯（Ｓ）を選択的に通板させる２つのパスライン部（Ｐ1），（Ｐ2）を有する金属帯の連続ラインにおいて、金属帯（Ｓ）が通板するパスライン部（Ｐ1）,（Ｐ2）を切り替えるための方法であって、
金属帯牽引用のロープ（Ｒ）を保持し、該ロープ（Ｒ）の繰り出し・巻き取りが可能なロープ巻取装置（１）を設置し、下記［イ］〜［ニ］の工程でパスライン部（Ｐ1），（Ｐ2）の切替を行うことを特徴とする、金属帯の連続ラインにおけるパスラインの切替方法（但し、切替により金属帯が通板しなくなるパスライン部を「旧使用のパスライン部」、切替により金属帯が通板することになるパスライン部を「新規使用のパスライン部」という。）。
［イ］停止状態の金属帯（Ｓ）を、パスライン部（Ｐ1），（Ｐ2）の分岐部（ｅ）よりもライン上流側の位置で切断し、先行金属帯（Ｓa）と後行金属帯（Ｓb）とに分離する。
［ロ］先行金属帯（Ｓa）を移動させて旧使用のパスライン部（Ｐ1）又は（Ｐ2）を通過させ、先行金属帯（Ｓa）の尾端をパスライン部（Ｐ1），（Ｐ2）の合流部（ｆ）近傍に位置させる。
［ハ］パスライン部（Ｐ1），（Ｐ2）の分岐部（ｅ）よりもライン上流側の位置からパスライン内に導入され、新規使用のパスライン部（Ｐ1）又は（Ｐ2）内に通されたロープ（Ｒ）の先端を先行金属帯（Ｓa）の尾端に連結した後、該ロープ（Ｒ）をロープ巻取装置（１）で巻き取ることにより、先行金属帯（Ｓa）を牽引して新規使用のパスライン部（Ｐ1）又は（Ｐ2）内に引き込み、先行金属帯（Ｓa）の尾端をパスライン部（Ｐ1），（Ｐ2）の分岐部（ｅ）よりもライン上流側に位置させる。
［ニ］先行金属帯（Ｓa）の尾端とロープ（Ｒ）との連結を解除した後、先行金属帯（Ｓa）の尾端と後行金属帯（Ｓb）の先端とを溶接により接合し、パスライン部（Ｐ1），（Ｐ2）の切替を完了する。 The features of the present invention for solving the above-described problems are as follows.
[1] In a continuous line of metal bands having two pass line portions (P1) and (P2) for selectively passing the metal band (S) by switching in the line, the metal band (S) is passed through A method for switching the pass line portions (P1) and (P2)
A rope take-up device (1) that holds the rope (R) for pulling the metal band and can feed and take up the rope (R) is installed, and a pass line is formed in the steps [i] to [d] below. (P1), (P2) switching method for switching the pass line in the continuous line of the metal band (however, the path line part where the metal band does not pass through the switching is referred to as the “old path "Line part", the pass line part through which the metal band passes through by switching is called "newly used pass line part").
[A] The metal strip (S) in the stopped state is cut at a position upstream of the branch line (e) of the pass line portions (P1) and (P2), and the preceding metal strip (Sa) and the following metal Separated into strips (Sb).
[B] The preceding metal strip (Sa) is moved to pass through the old pass line part (P1) or (P2), and the tail end of the preceding metal band (Sa) is passed through the pass line parts (P1), (P2). In the vicinity of the merging portion (f).
[C] It is introduced into the pass line from the position upstream of the branch part (e) of the pass line parts (P1) and (P2), and passes into the newly used pass line part (P1) or (P2). The leading end of the rope (R) is connected to the tail end of the preceding metal strip (Sa), and then the rope (R) is wound up by the rope winding device (1) to pull the leading metal strip (Sa). Then, it is pulled into the newly used pass line part (P1) or (P2), and the tail end of the preceding metal strip (Sa) is upstream of the branch part (e) of the pass line parts (P1) and (P2). To be located.
[D] After the connection between the tail end of the preceding metal strip (Sa) and the rope (R) is released, the tail end of the preceding metal strip (Sa) and the tip of the following metal strip (Sb) are joined by welding. Then, the switching of the pass line portions (P1) and (P2) is completed.

［2］上記［1］のパスラインの切替方法において、下記［ｉ］〜［vi］の工程でパスライン部（Ｐ1），（Ｐ2）の切替を行うことを特徴とする、金属帯の連続ラインにおけるパスラインの切替方法。
［ｉ］停止状態の金属帯（Ｓ）を、パスライン部（Ｐ1），（Ｐ2）の分岐部（ｅ）よりも上流側の位置で切断し、先行金属帯（Ｓa）と後行金属帯（Ｓb）とに分離した後、ロープ巻取装置（１）が保持するロープ（Ｒ）の先端を先行金属帯（Ｓa）の尾端に連結する。
［ii］先行金属帯（Ｓa）を移動させ、その尾端に連結されたロープ（Ｒ）を牽引しつつ、旧使用のパスライン部（Ｐ1）又は（Ｐ2）を通過させ、先行金属帯（Ｓa）の尾端をパスライン部（Ｐ1），（Ｐ2）の合流部（ｆ）近傍に位置させる。
［iii］先行金属帯（Ｓa）の尾端とロープ（Ｒ）との連結を解除するとともに、パスライン部（Ｐ1），（Ｐ2）の分岐部（ｅ）近傍の位置でロープ（Ｒ）を分断することにより、旧使用のパスライン部（Ｐ1）又は（Ｐ2）内にロープ部分（Ｒ_Ｃ１）を残留させる。
［iv］前回の切替の際に、新規使用のパスライン部（Ｐ1）又は（Ｐ2）内に残留させておいたロープ部分（Ｒ_Ｃ２）の一端を、先行金属帯（Ｓa）の尾端に連結するとともに、ロープ部分（Ｒ_Ｃ２）の他端をロープ巻取装置（１）が保持するロープ（Ｒ）の先端に接続する。
［ｖ］ロープ巻取装置（１）によりロープ（Ｒ）（但し、工程（iv）においてロープ（Ｒ）に接続されたロープ部分（Ｒ_Ｃ２）を含む。）を巻き取ることにより、先行金属帯（Ｓa）を牽引して新規使用のパスライン部（Ｐ1）又は（Ｐ2）内に引き込み、先行金属帯（Ｓa）の尾端をパスライン部（Ｐ1），（Ｐ2）の分岐部（ｅ）よりもライン上流側に位置させる。
［vi］先行金属帯（Ｓa）の尾端とロープ（Ｒ）との連結を解除した後、先行金属帯（Ｓa）の尾端と後行金属帯（Ｓb）の先端とを溶接により接合し、パスライン部（Ｐ1），（Ｐ2）の切替を完了する。 [2] In the pass line switching method of the above [1], the pass line portions (P1) and (P2) are switched in the following steps [i] to [vi], How to switch pass lines in a line.
[I] The metal strip (S) in a stopped state is cut at a position upstream of the branch portions (e) of the pass line portions (P1) and (P2), and the preceding metal strip (Sa) and the subsequent metal strip After separation into (Sb), the tip of the rope (R) held by the rope winding device (1) is connected to the tail end of the preceding metal strip (Sa).
[Ii] The preceding metal strip (Sa) is moved, and while pulling the rope (R) connected to the tail end, the previously used pass line part (P1) or (P2) is passed through, and the leading metal strip ( The tail end of Sa) is positioned in the vicinity of the merging portion (f) of the pass line portions (P1) and (P2).
[Iii] The connection between the tail end of the preceding metal strip (Sa) and the rope (R) is released, and the rope (R) is placed at a position near the branching portion (e) of the pass line portions (P1) and (P2). By dividing, the rope portion (R _C1 ) remains in the old pass line portion (P1) or (P2).
[Iv] One end of the rope portion ( _RC2 ) left in the newly used pass line portion (P1) or (P2) at the previous switching is used as the tail end of the preceding metal strip (Sa). At the same time, the other end of the rope portion (R _C2 ) is connected to the tip of the rope (R) held by the rope winding device (1).
[V] By winding the rope (R) (including the rope portion ( _RC2 ) connected to the rope (R) in the step (iv)) by the rope winding device (1), the preceding metal strip (Sa) is pulled into the newly used pass line part (P1) or (P2), and the tail end of the preceding metal strip (Sa) is branched into the pass line parts (P1), (P2) (e) It is located upstream of the line.
[Vi] After releasing the connection between the tail end of the preceding metal strip (Sa) and the rope (R), the tail end of the preceding metal strip (Sa) and the tip of the following metal strip (Sb) are joined by welding. Then, the switching of the pass line portions (P1) and (P2) is completed.

［3］上記［1］又は［2］のパスラインの切替方法において、パスライン部（Ｐ1）が金属帯用の処理設備を有するパスライン部であり、パスライン部（Ｐ2）が前記処理設備をバイパスするためのパスライン部であることを特徴とする、金属帯の連続ラインにおけるパスラインの切替方法。
［4］上記［1］又は［2］のパスラインの切替方法において、パスライン部（Ｐ1），（Ｐ2）がそれぞれ金属帯の処理設備を有するパスライン部であることを特徴とする、金属帯の連続ラインにおけるパスラインの切替方法。 [3] In the pass line switching method of [1] or [2] above, the pass line part (P1) is a pass line part having a processing facility for a metal strip, and the pass line part (P2) is the processing equipment. A method for switching a pass line in a continuous line of a metal band, characterized in that the pass line unit is for bypassing a metal line.
[4] In the method for switching a pass line according to the above [1] or [2], the pass line portions (P1) and (P2) are each a pass line portion having a metal band processing facility. A method of switching pass lines in a continuous line of bands.

本発明によれば、切替使用される２つのパスライン部を有する金属帯の連続ラインにおいて、パスラインの切替を効率的且つ迅速に行うことができるとともに、ロープ巻取装置と溶接機を１箇所に設置するだけでよいため、少ない設備コストで実施することができる。さらに、切替により使用しなくなるパスライン部には金属帯が残留しないので、従来技術のようにパスライン部に残留した金属帯が再通板する際にパスラインを汚染する、というような問題も生じるおそれがない。
また、請求項２の発明によれば、前回の切替時に一方のパスライン部に残しておいたロープ部分を、今回の切替において金属帯の牽引に用いるので、パスラインの切替をより効率的且つ迅速に行うことができる。 According to the present invention, in a continuous line of a metal strip having two pass line portions to be used for switching, the pass line can be switched efficiently and quickly, and the rope winding device and the welding machine are provided at one place. Therefore, it can be carried out with a small equipment cost. Furthermore, since the metal band does not remain in the pass line portion that is not used due to switching, there is a problem that the metal band remaining in the pass line portion contaminates the pass line when the plate is re-passed as in the prior art. There is no risk.
According to the invention of claim 2, since the rope portion left in one of the pass line portions at the previous switching is used for towing the metal band in the current switching, the switching of the pass lines can be performed more efficiently and Can be done quickly.

図１は、本発明の一実施形態を示すもので、本発明を鋼帯の連続処理ラインにおけるパスライン切替に適用した場合の実施形態を示している。
この連続処理ラインは、切替により鋼帯Ｓを選択的に通板させる２つのパスライン部Ｐ1，Ｐ2を有しており、この実施形態では、パスライン部Ｐ1が鋼帯用の処理設備２を有し、パスライン部Ｐ2が前記処理設備２をバイパスするためのパスライン部となっている。 FIG. 1 shows an embodiment of the present invention, and shows an embodiment when the present invention is applied to pass line switching in a continuous processing line of steel strip.
This continuous processing line has two pass line portions P1 and P2 for selectively passing the steel strip S by switching. In this embodiment, the pass line portion P1 is provided with the processing equipment 2 for the steel strip. And the pass line part P2 is a pass line part for bypassing the processing equipment 2.

図において、ｅはパスライン部Ｐ1，Ｐ2の分岐部（各パスライン部の入側）、ｆはパスライン部Ｐ1，Ｐ2の合流部（各パスライン部の出側）である。また、１はロープ巻取装置、３は溶接機、４は通板ロール、５はロープガイドである。
前記ロープ巻取装置１は、鋼帯牽引用のロープＲを保持し、このロープＲの繰り出し・巻き取りが可能である。このロープ巻取装置１に保持されたロープＲは、前記ロープガイド５に案内されて、パスライン部Ｐ1，Ｐ2の分岐部ｅの上流側の位置からパスライン内に導入される。ロープ巻取装置１の設置場所に特別な制約はないが、上記のようにロープＲはパスライン部Ｐ1，Ｐ2の分岐部ｅの上流側の位置からパスライン内に導入されるため、パスライン部Ｐ1，Ｐ2の分岐部ｅ近くに配置されることが好ましい。
前記ロープＲは、処理設備の種類に応じてその材質を選択することが好ましい。例えば、酸洗設備を有するパスラインの場合、酸洗液に対して十分な耐食性を有する材質、例えば、ナイロンやポリプロピレンなどが好ましい。また、耐食性の観点からは、特にポリプロピレンが好ましい。 In the figure, e is a branching portion of the pass line portions P1 and P2 (incoming side of each pass line portion), and f is a confluence portion of the pass line portions P1 and P2 (exit side of each pass line portion). Further, 1 is a rope winding device, 3 is a welding machine, 4 is a sheet passing roll, and 5 is a rope guide.
The rope winding device 1 holds a rope R for pulling a steel strip, and can feed and wind the rope R. The rope R held by the rope winding device 1 is guided by the rope guide 5 and introduced into the pass line from a position upstream of the branch part e of the pass line parts P1 and P2. Although there is no particular restriction on the installation location of the rope winding device 1, the rope R is introduced into the pass line from the upstream side of the branch part e of the pass line parts P1 and P2 as described above. It is preferable to be arranged near the branching part e of the parts P1 and P2.
The material of the rope R is preferably selected according to the type of processing equipment. For example, in the case of a pass line having pickling equipment, a material having sufficient corrosion resistance against the pickling solution, such as nylon or polypropylene, is preferable. In addition, polypropylene is particularly preferable from the viewpoint of corrosion resistance.

前記溶接機３は鋼帯接合用の溶接機であり、前記パスライン部Ｐ1，Ｐ2の分岐部ｅの上流側に設置されている。この溶接機３は、通常、鋼帯端部どうしのラップ部を溶接するスポット溶接機やシーム溶接機などの溶接機で構成される。なお、同じく分岐部ｅの上流側には、必要に応じて、鋼帯の切断装置が設けられる。
前記通板ロール４は、パスライン切替の際に鋼帯端部の位置調整を容易且つ迅速に行えるようにするため、正寸動・逆寸動機能（鋼帯をライン進行方向及び反ライン進行方向に寸動させる駆動機能）を有することが好ましい。また、同様の目的で、溶接機の入側と出側にそれぞれ、正寸動・逆寸動機能（鋼帯をライン進行方向及び反ライン進行方向に寸動させる駆動機能）を有するピンチロールを設置することが好ましい。 The welding machine 3 is a welding machine for joining steel strips, and is installed on the upstream side of the branch part e of the pass line parts P1, P2. The welding machine 3 is usually composed of a welding machine such as a spot welding machine or a seam welding machine that welds the lap portions between the steel strip end portions. Similarly, on the upstream side of the branch part e, a steel strip cutting device is provided if necessary.
In order to enable easy and quick adjustment of the position of the steel strip end when the pass line is switched, the threading roll 4 has a normal swaying / reverse swaying function (the steel strip moves in the direction of the line and the direction of the anti-line). It is preferable to have a drive function of moving in the direction. In addition, for the same purpose, pinch rolls having forward and reverse jogging functions (drive function to move the steel strip in the line traveling direction and the anti-line traveling direction) are respectively provided on the inlet side and the outlet side of the welding machine. It is preferable to install.

図１（Ｉ）〜（Ｖ）は、鋼帯Ｓが通板するパスライン部をパスライン部Ｐ1からパスライン部Ｐ2に切り替える工程を順に示したものである。ここで、以下の説明において、切替により鋼帯Ｓが通板しなくなるパスライン部を「旧使用のパスライン部」、切替により金属帯Ｓが通板することになるパスライン部を「新規使用のパスライン部」という。
図１（Ｉ）は、鋼帯Ｓがパスライン部Ｐ1を通板している状態を示している。この状態からパスラインを切り替える場合、鋼帯Ｓの通板を停止させた後、図１（II）に示すように、パスライン部Ｐ1，Ｐ2の分岐部ｅよりもライン上流側の位置で鋼帯Ｓを切断（手作業又は切断装置による切断）し、先行鋼帯Ｓaと後行鋼帯Ｓbとに分離する。次いで、図１（II），（III）に示すように、先行鋼帯Ｓaを移動させて旧使用のパスライン部Ｐ1を通過させ、先行鋼帯Ｓaの尾端ｘをパスライン部Ｐ1，Ｐ2の合流部ｆの近傍に位置させる。 1 (I) to 1 (V) sequentially show the process of switching the pass line part through which the steel strip S passes from the pass line part P1 to the pass line part P2. Here, in the following explanation, the pass line portion where the steel strip S does not pass through the switching is referred to as the “old use pass line portion”, and the pass line portion where the metal strip S passes through the switching is referred to as the “new use”. Passline part of ".
FIG. 1 (I) shows a state in which the steel strip S passes through the pass line portion P1. When switching the pass line from this state, after the steel strip S is stopped, as shown in FIG. 1 (II), the steel is positioned at a position upstream of the branch part e of the pass line parts P1 and P2. The strip S is cut (manually or cut by a cutting device) and separated into a preceding steel strip Sa and a subsequent steel strip Sb. Next, as shown in FIGS. 1 (II) and (III), the preceding steel strip Sa is moved to pass through the previously used pass line portion P1, and the tail end x of the preceding steel strip Sa is passed through the pass line portions P1, P2. In the vicinity of the merging portion f.

次いで、ロープ巻取装置１に保持され、パスライン部Ｐ1，Ｐ2の分岐部ｅの上流側の位置からパスライン内に導入され、且つ新規使用のパスライン部Ｐ2内に通されたロープＲの先端を先行鋼帯Ｓaの尾端ｘに連結する。この場合、ロープ巻取装置１から繰り出されるロープＲを、人力でパスライン内に導入してパスライン部Ｐ2の全長に通し、その先端を先行鋼帯Ｓaの尾端ｘに連結してもよいし、また、後述する図２〜図４の実施形態のように、前回の切替の際にパスライン部Ｐ2内の全長に残留させたロープを利用し、その一端を先行鋼帯Ｓaの尾端ｘに連結し、他端をロープ巻取装置１から繰り出されるロープＲの先端に接続するようにしてもよい。 Next, the rope R held by the rope winding device 1 is introduced into the pass line from a position upstream of the branch part e of the pass line parts P1, P2, and passed through the newly used pass line part P2. The tip is connected to the tail end x of the preceding steel strip Sa. In this case, the rope R fed out from the rope winding device 1 may be manually introduced into the pass line and passed through the entire length of the pass line portion P2, and the tip thereof may be connected to the tail end x of the preceding steel strip Sa. In addition, as in the embodiments of FIGS. 2 to 4 to be described later, a rope left over the entire length in the pass line portion P2 at the time of the previous switching is used, and one end thereof is the tail end of the preceding steel strip Sa. You may make it connect with x and connect the other end to the front-end | tip of the rope R drawn | fed out from the rope winding apparatus 1. FIG.

以上のようにしてロープＲを先行鋼帯Ｓaの尾端ｘに連結した後、図１（IV）に示すように、ロープＲをロープ巻取装置１で巻き取ることにより、先行鋼帯Ｓaを牽引して新規使用のパスライン部Ｐ2内に引き込み、先行鋼帯Ｓaの尾端ｘをパスライン部Ｐ1，Ｐ2の分岐部ｅよりもライン上流側に位置させる。
そして、先行鋼帯Ｓaの尾端ｘとロープＲとの連結を解除した後、先行鋼帯Ｓaの尾端ｘと後行鋼帯Ｓbの先端ｙとを溶接機３で溶接して接合ｗし、パスライン部Ｐ1からパスライン部Ｐ2への切替を完了する。
なお、鋼帯Ｓが通板するパスライン部をパスライン部Ｐ2からパスライン部Ｐ1に切り替える場合も、上記に準じた工程で行えばよい。 After connecting the rope R to the tail end x of the preceding steel strip Sa as described above, as shown in FIG. 1 (IV), the rope R is wound up by the rope winding device 1 to thereby remove the preceding steel strip Sa. It is pulled and pulled into the newly used pass line part P2, and the tail end x of the preceding steel strip Sa is positioned upstream of the branch part e of the pass line parts P1 and P2.
Then, after the connection between the tail end x of the preceding steel strip Sa and the rope R is released, the tail end x of the preceding steel strip Sa and the tip y of the succeeding steel strip Sb are welded by the welding machine 3 and joined. The switching from the pass line part P1 to the pass line part P2 is completed.
In addition, what is necessary is just to perform by the process according to the above also when switching the pass line part through which the steel strip S passes from the pass line part P2 to the pass line part P1.

図２〜図４は、本発明のより具体的且つ好ましい実施形態を示すもので、本発明を鋼帯の連続焼鈍ラインにおけるパスライン切替に適用した場合の一実施形態を示している。この連続焼鈍ラインは、冷延鋼帯とステンレス鋼帯の両方の焼鈍処理を行うラインであり、連続焼鈍設備の下流側に、ステンレス鋼帯用の酸洗設備２０を備えたパスライン部Ｐ1と、この酸洗設備２０をバイパスするための冷延鋼帯用のパスライン部Ｐ2を有し、処理する鋼帯（ステンレス鋼帯・冷延鋼帯）に応じてパスライン部が切り替えられる。 2 to 4 show a more specific and preferred embodiment of the present invention, and show an embodiment when the present invention is applied to pass line switching in a continuous annealing line of a steel strip. This continuous annealing line is a line for performing an annealing treatment of both a cold-rolled steel strip and a stainless steel strip, and a pass line portion P1 provided with a pickling facility 20 for a stainless steel strip on the downstream side of the continuous annealing facility. The pass line portion P2 for the cold-rolled steel strip for bypassing the pickling equipment 20 is provided, and the pass line portion is switched according to the steel strip to be processed (stainless steel strip / cold-rolled steel strip).

図２は、パスライン部Ｐ1，Ｐ2とその上流側及び下流側パスラインの一部の設備構成を示すものであり、ｅはパスライン部Ｐ1，Ｐ2の分岐部（各パスライン部の入側）、ｆはパスライン部Ｐ1，Ｐ2の合流部（各パスライン部の出側）、１はロープ巻取装置、３は溶接機、４は通板ロールであり、これらの構成及び機能と配置は図１の実施形態と同様である。また、パスライン部Ｐ1，Ｐ2の分岐部ｅの上流側には、必要に応じて、鋼帯の切断装置が設けられる。
さらに、図２において、５はロープガイド、６Ａは溶接機入側のピンチロール、６Ｂは溶接機出側のピンチロール、７は鋼帯クランプ装置である。 FIG. 2 shows a part of the equipment configuration of the pass line parts P1 and P2 and the upstream and downstream pass lines, and e is a branching part of the pass line parts P1 and P2 (incoming side of each pass line part). ), F is the joining part of the pass line parts P1 and P2 (the exit side of each pass line part), 1 is a rope winding device, 3 is a welder, 4 is a plate feed roll, and their configuration, function and arrangement Is similar to the embodiment of FIG. Further, a steel strip cutting device is provided on the upstream side of the branch part e of the pass line parts P1 and P2 as necessary.
Furthermore, in FIG. 2, 5 is a rope guide, 6A is a pinch roll on the welding machine entry side, 6B is a pinch roll on the welding machine exit side, and 7 is a steel strip clamping device.

前記溶接機入側・出側のピンチロール６Ａ，６Ｂは、鋼帯の端部どうしを溶接接合する際などに、鋼帯端部の位置調整を容易且つ迅速に行えるようにするため、正寸動・逆寸動機能（鋼帯をライン進行方向及び反ライン進行方向に寸動させる駆動機能）を有している。
前記ロープガイド５は、ロープ巻取装置１が保持するロープＲを案内し、パスライン部Ｐ1，Ｐ2の分岐部ｅと溶接機３との間の位置（溶接機出側のピンチロール６Ｂの位置）又は溶接機３とピンチロール６Ａとの間の位置からパスライン内に導入する。
前記鋼帯クランプ装置は、パスライン部Ｐ1，Ｐ2の合流部ｆの下流側に設置され、先行鋼帯Ｓａの尾端ｘに対するロープＲの脱着の際などに、鋼帯を固定するのに用いられる。
また、前記酸洗設備２０は、入側から酸洗タンク２０ａ、リンスタンク２０ｂ及びドライヤー２０ｃを備えている。 The welding machine entrance / exit side pinch rolls 6A and 6B have an exact size so that the positions of the steel strip ends can be adjusted easily and quickly when welding the end portions of the steel strips. It has a moving / reverse inching function (driving function for moving the steel strip in the line traveling direction and the anti-line traveling direction).
The rope guide 5 guides the rope R held by the rope winding device 1, and is located between the branching portion e of the pass line portions P1 and P2 and the welding machine 3 (the position of the pinch roll 6B on the outlet side of the welding machine). Or from the position between the welding machine 3 and the pinch roll 6A.
The steel strip clamping device is installed on the downstream side of the joining portion f of the pass line portions P1 and P2, and is used to fix the steel strip when the rope R is attached to or detached from the tail end x of the preceding steel strip Sa. It is done.
The pickling equipment 20 includes a pickling tank 20a, a rinsing tank 20b, and a dryer 20c from the entrance side.

図３（Ｉ）〜（VI）は、鋼帯Ｓが通板するパスライン部をパスライン部Ｐ1からパスライン部Ｐ2に切り替える工程を順に示したものである。ここで、以下の説明において、切替により鋼帯Ｓが通板しなくなるパスライン部を「旧使用のパスライン部」、切替により金属帯Ｓが通板することになるパスライン部を「新規使用のパスライン部」という。
パスラインを切り替える場合、鋼帯Ｓの通板を停止させた後、図３（Ｉ）に示すように、パスライン部Ｐ1，Ｐ2の分岐部ｅよりもライン上流側の位置で鋼帯Ｓを切断（手作業又は切断装置による切断）し、先行鋼帯Ｓaと後行鋼帯Ｓbとに分離する。その後、先行鋼帯Ｓaの尾端ｘは、ロープＲを連結するために、例えば、図５（Ａ）に示すように加工（幅狭に加工し、且つロープ通し穴を設ける）される。 3 (I) to (VI) sequentially show the process of switching the pass line part through which the steel strip S passes from the pass line part P1 to the pass line part P2. Here, in the following explanation, the pass line portion where the steel strip S does not pass through the switching is referred to as the “old use pass line portion”, and the pass line portion where the metal strip S passes through the switching is referred to as the “new use”. Passline part of ".
When switching the pass line, after stopping the sheet passing of the steel strip S, as shown in FIG. 3 (I), the steel strip S is placed at a position upstream of the branching portion e of the pass line portions P1 and P2. Cutting (manual operation or cutting with a cutting device) is performed to separate the preceding steel strip Sa and the subsequent steel strip Sb. Thereafter, the tail end x of the preceding steel strip Sa is processed (processed narrowly and provided with a rope through hole), for example, as shown in FIG.

次いで、ロープ巻取装置１が保持するロープＲを、ロープガイド５を経由させてパスライン部Ｐ1，Ｐ2の分岐部ｅよりもライン上流側の位置からパスライン内に引き込み、ロープＲの先端を先行鋼帯Ｓaの尾端ｘに連結する。しかる後、図３（II）に示すように先行鋼帯Ｓaを移動させ、その尾端ｘに連結されたロープＲを牽引しつつ、旧使用のパスライン部Ｐ1を通過させ、先行鋼帯Ｓaの尾端ｘをパスライン部Ｐ1，Ｐ2の合流部ｆ近傍に位置させる。ここで、先行鋼帯Ｓaを移動させる際、ロープ巻取装置１及びライン内駆動ロールを制御することでロープＲ及び先行鋼帯Ｓaに張力を与えることにより、先行鋼帯Ｓaの尾端側を円滑に移動させることができる。 Next, the rope R held by the rope winding device 1 is drawn into the pass line from the position upstream of the branch part e of the pass line parts P1 and P2 via the rope guide 5, and the tip of the rope R is pulled. It is connected to the tail end x of the preceding steel strip Sa. Thereafter, as shown in FIG. 3 (II), the preceding steel strip Sa is moved, and while pulling the rope R connected to the tail end x, it passes through the previously used pass line portion P1, and the preceding steel strip Sa is passed. Is located in the vicinity of the junction f of the pass line portions P1 and P2. Here, when moving the preceding steel strip Sa, by controlling the rope winding device 1 and the in-line drive roll, tension is applied to the rope R and the preceding steel strip Sa, so that the tail end side of the preceding steel strip Sa is moved. It can be moved smoothly.

次いで、図３（III）に示すように、先行鋼帯Ｓaの尾端ｘとロープＲとの連結を解除するとともに、パスライン部Ｐ1，Ｐ2の分岐部ｅ近傍の位置でロープＲを分断（ロープ切断またはロープ途中に予め設けられた継手部の切離し）することにより、旧使用のパスライン部Ｐ1内にロープ部分Ｒ_Ｃ１を残留させる。この残留したロープ部分Ｒ_Ｃ１は、次回の切替（パスライン部Ｐ2からパスライン部Ｐ1への切替）の際に、鋼帯を牽引するために用いられる。一方、前回の切替の際に、新規使用のパスライン部Ｐ2内に残留させておいたロープ部分Ｒ_Ｃ２の一端を、先行鋼帯Ｓaの尾端ｘに連結するとともに、当該ロープ部分Ｒ_Ｃ２の他端をロープ巻取装置１が保持するロープＲの先端に接続する。 Next, as shown in FIG. 3 (III), the connection between the tail end x of the preceding steel strip Sa and the rope R is released, and the rope R is divided at a position in the vicinity of the branching portion e of the pass line portions P1, P2. by prearranged disconnection of the joint portion) in the middle rope cutting or rope, to leave the rope portion R _C1 in the pass line portion P1 of the former use. The remaining rope portion _RC1 is used to pull the steel strip at the next switching (switching from the pass line portion P2 to the pass line portion P1). On the other hand, during their last switch, one end of the rope portion R _C2 that has been allowed to remain in the path line portion P2 of the novel use, as well as connecting to the tail edge x of the preceding steel strip Sa, of the rope portion R _C2 The other end is connected to the tip of the rope R held by the rope winding device 1.

次いで、図３（IV），（Ｖ）に示すように、ロープ巻取装置１によりロープＲ（上記のようにロープＲに接続されたロープ部分Ｒ_Ｃ２を含む。）を巻き取ることにより、先行鋼帯Ｓaを牽引して新規使用のパスライン部Ｐ2内に引き込み、先行鋼帯Ｓaの尾端ｘをパスライン部Ｐ1，Ｐ2の分岐部ｅよりもライン上流側に位置させる。次いで、先行鋼帯Ｓaの尾端ｘとロープＲとの連結を解除した後、図５（Ｂ）に示すように先行鋼帯Ｓaの尾端ｘの加工箇所を切断除去する。
次いで、通板ロール４やピンチロール６Ａ，６Ｂにより先行鋼帯Ｓaと後行鋼帯Ｓｂとを適宜正寸動・逆寸動させることにより、先行鋼帯Ｓaの尾端ｘと後行鋼帯Ｓbの先端ｙとを溶接機３に位置合わせし、図３（VI）に示すように両端部を溶接（通常、両端部のラップ部のスポット溶接）により接合ｗし、パスライン部Ｐ1，Ｐ2の切替を完了する。 Next, as shown in FIGS. 3 (IV) and 3 (V), the rope winding device 1 winds the rope R (including the rope portion _RC2 connected to the rope R as described above). The steel strip Sa is pulled and drawn into the newly used pass line portion P2, and the tail end x of the preceding steel strip Sa is positioned upstream of the branch portion e of the pass line portions P1 and P2. Next, after the connection between the tail end x of the preceding steel strip Sa and the rope R is released, the processed portion of the tail end x of the preceding steel strip Sa is cut and removed as shown in FIG.
Then, the tail end x of the preceding steel strip Sa and the following steel strip are moved by appropriately moving the preceding steel strip Sa and the succeeding steel strip Sb with the plate roll 4 and the pinch rolls 6A and 6B. The tip y of Sb is aligned with the welding machine 3, and both ends are joined by welding (usually spot welding at the lap portions at both ends) as shown in FIG. 3 (VI), and pass line portions P1, P2 Complete the switching.

図４（Ｉ）〜（VI）は、図３（Ｉ）〜（VI）において切替がなされたパスライン部を再度切替する場合、すなわち、鋼帯Ｓが通板するパスライン部をパスライン部Ｐ2からパスライン部Ｐ1に切り替える工程を順に示したものである。
パスラインを切り替える場合、鋼帯Ｓの通板を停止させた後、図４（Ｉ）に示すように、パスライン部Ｐ1，Ｐ2の分岐部ｅよりもライン上流側の位置で鋼帯Ｓを切断（手作業又は切断装置による切断）し、先行鋼帯Ｓaと後行鋼帯Ｓbとに分離する。その後、先行鋼帯Ｓaの尾端ｘは、ロープＲを連結するために、例えば、図５（Ａ）に示すように加工（幅狭に加工し、且つロープ通し穴を設ける）される。 4 (I) to 4 (VI) show the case where the pass line portion switched in FIGS. 3 (I) to 3 (VI) is switched again, that is, the pass line portion through which the steel strip S passes is the pass line portion. The steps of switching from P2 to the pass line portion P1 are shown in order.
When switching the pass line, after the plate of the steel strip S is stopped, as shown in FIG. 4 (I), the steel strip S is placed at a position upstream of the branch portion e of the pass line portions P1 and P2. Cutting (manual operation or cutting with a cutting device) is performed to separate the preceding steel strip Sa and the subsequent steel strip Sb. Thereafter, the tail end x of the preceding steel strip Sa is processed (processed narrowly and provided with a rope through hole), for example, as shown in FIG.

次いで、ロープ巻取装置１が保持するロープＲを、ロープガイド５を経由させてパスライン部Ｐ1，Ｐ2の分岐部ｅよりもライン上流側の位置からパスライン内に引き込み、ロープＲの先端を先行鋼帯Ｓaの尾端ｘに連結する。しかる後、図４（II）に示すように先行鋼帯Ｓaを移動させ、その尾端ｘに連結されたロープＲを牽引しつつ、旧使用のパスライン部Ｐ2を通過させ、先行鋼帯Ｓaの尾端ｘをパスライン部Ｐ1，Ｐ2の合流部ｆ近傍に位置させる。ここで、先行鋼帯Ｓaを移動させる際、ロープ巻取装置１及びライン内駆動ロールを制御することでロープＲ及び先行鋼帯Ｓaに張力を与えることにより、先行鋼帯Ｓaの尾端側を円滑に移動させることができる。 Next, the rope R held by the rope winding device 1 is drawn into the pass line from the position upstream of the branch part e of the pass line parts P1 and P2 via the rope guide 5, and the tip of the rope R is pulled. It is connected to the tail end x of the preceding steel strip Sa. Thereafter, as shown in FIG. 4 (II), the preceding steel strip Sa is moved, and while pulling the rope R connected to the tail end x, it passes through the old used pass line portion P2, and the preceding steel strip Sa. Is located in the vicinity of the junction f of the pass line portions P1 and P2. Here, when moving the preceding steel strip Sa, by controlling the rope winding device 1 and the in-line drive roll, tension is applied to the rope R and the preceding steel strip Sa, so that the tail end side of the preceding steel strip Sa is moved. It can be moved smoothly.

次いで、図４（III）に示すように、先行鋼帯Ｓaの尾端ｘとロープＲとの連結を解除するとともに、パスライン部Ｐ1，Ｐ2の分岐部ｅ近傍の位置でロープＲを分断（ロープ切断またはロープ途中に予め設けられた継手部の切離し）することにより、旧使用のパスライン部Ｐ2内にロープ部分Ｒ_Ｃ１を残留させる。この残留したロープ部分Ｒ_Ｃ１は、次回の切替（パスライン部Ｐ1からパスライン部Ｐ2への切替）の際に、鋼帯を牽引するために用いられる。一方、前回の切替（図３（Ｉ）〜（VI）の切替）の際に、新規使用のパスライン部Ｐ1内に残留させておいたロープ部分Ｒ_Ｃ２の一端を、先行鋼帯Ｓaの尾端ｘに連結するとともに、当該ロープ部分Ｒ_Ｃ２の他端をロープ巻取装置１が保持するロープＲの先端に接続する。 Next, as shown in FIG. 4 (III), the connection between the tail end x of the preceding steel strip Sa and the rope R is released, and the rope R is divided at a position near the branching portion e of the pass line portions P1 and P2 ( by prearranged disconnection of the joint portion) in the middle rope cutting or rope, to leave the rope portion R _C1 in the pass line portion P2 of the former use. The remaining rope portion R _C1 is used for towing the steel strip at the next switching (switching from the pass line portion P1 to the pass line portion P2). On the other hand, during their last switching (switching of FIG. 3 (I) ~ (VI) ), one end of the rope portion R _C2 that has been allowed to remain on the pass line portion P1 of the novel use, the tail of the preceding steel strip Sa while connected to an end x, the other end of the rope portion R _C2 rope winding device 1 is connected to the end of the rope R to hold.

次いで、図４（IV），（Ｖ）に示すように、ロープ巻取装置１によりロープＲ（上記のようにロープＲに接続されたロープ部分Ｒ_Ｃ２を含む。）を巻き取ることにより、先行鋼帯Ｓaを牽引して新規使用のパスライン部Ｐ1内に引き込み、先行鋼帯Ｓaの尾端ｘをパスライン部Ｐ1，Ｐ2の分岐部ｅよりもライン上流側に位置させる。次いで、先行鋼帯Ｓaの尾端ｘとロープＲとの連結を解除した後、図５（Ｂ）に示すように先行鋼帯Ｓaの尾端ｘの加工箇所を切断除去する。
次いで、通板ロール４やピンチロール６Ａ，６Ｂにより先行鋼帯Ｓaと後行鋼帯Ｓｂとを適宜正寸動・逆寸動させることにより、先行鋼帯Ｓaの尾端ｘと後行鋼帯Ｓbの先端ｙとを溶接機３に位置合わせし、図４（VI）に示すように両端部を溶接（通常、両端部のラップ部のスポット溶接）により接合ｗし、パスライン部Ｐ1，Ｐ2の切替を完了する。 Next, as shown in FIGS. 4 (IV) and 4 (V), the rope R (including the rope portion _RC2 connected to the rope R as described above) is wound up by the rope winding device 1, thereby leading The steel strip Sa is pulled and drawn into the newly used pass line portion P1, and the tail end x of the preceding steel strip Sa is positioned upstream of the branch portion e of the pass line portions P1 and P2. Next, after the connection between the tail end x of the preceding steel strip Sa and the rope R is released, the processed portion of the tail end x of the preceding steel strip Sa is cut and removed as shown in FIG.
Then, the tail end x of the preceding steel strip Sa and the following steel strip are moved by appropriately moving the preceding steel strip Sa and the succeeding steel strip Sb with the plate roll 4 and the pinch rolls 6A and 6B. The tip y of Sb is aligned with the welding machine 3, and both ends are joined by welding (usually spot welding of the lap portions at both ends) as shown in FIG. 4 (VI), and pass line portions P1, P2 Complete the switching.

なお、以上述べた実施形態の連続ラインは、パスライン部Ｐ1が鋼帯用の処理設備を有するパスライン部であり、パスライン部Ｐ2が前記処理設備をバイパスするためのパスライン部であるが、パスライン部Ｐ1，Ｐ2がそれぞれ鋼帯の処理設備を有するパスライン部であるような連続ラインであってもよい。
本発明のパスラインの切替方法は、金属帯用のあらゆる種類の連続ラインに適用することができる。 In addition, although the continuous line of embodiment described above is a pass line part in which the pass line part P1 has the processing equipment for steel strips, the pass line part P2 is a pass line part for bypassing the said processing equipment. The pass lines P1 and P2 may be continuous lines that are each a pass line having steel strip processing equipment.
The path line switching method of the present invention can be applied to all kinds of continuous lines for metal bands.

本発明を鋼帯の連続処理ラインにおけるパスライン切替に適用した場合の一実施形態を示すもので、鋼帯が通板するパスライン部をパスライン部Ｐ1からパスライン部Ｐ2に切り替える工程を順に示した説明図One embodiment at the time of applying the present invention to the pass line switching in the continuous processing line of the steel strip shows the step of switching the pass line portion through which the steel strip passes from the pass line portion P1 to the pass line portion P2. Illustration shown 本発明を鋼帯の連続焼鈍ラインにおけるパスライン切替に適用した場合の一実施形態を示すもので、パスライン部Ｐ1，Ｐ2とその上流側及び下流側パスラインの一部の設備構成を示す説明図1 shows an embodiment when the present invention is applied to pass line switching in a continuous annealing line for steel strips, and an explanation showing a part of the equipment configuration of the pass line portions P1, P2 and its upstream and downstream pass lines. Figure 図２の実施形態において、鋼帯Ｓが通板するパスライン部をパスライン部Ｐ1からパスライン部Ｐ2に切り替える工程を順に示した説明図In the embodiment of FIG. 2, explanatory diagrams sequentially showing steps of switching the pass line portion through which the steel strip S passes from the pass line portion P1 to the pass line portion P2. 図２の実施形態において、鋼帯Ｓが通板するパスライン部をパスライン部Ｐ2からパスライン部Ｐ1に切り替える工程を順に示した説明図In the embodiment of FIG. 2, explanatory diagrams sequentially showing steps of switching the pass line portion through which the steel strip S passes from the pass line portion P2 to the pass line portion P1. 図３及び図４の工程において、先行鋼帯Ｓａの尾端の加工形態を示す説明図Explanatory drawing which shows the processing form of the tail end of preceding steel strip Sa in the process of FIG.3 and FIG.4

Explanation of symbols

１ロープ巻取装置
２処理設備
３溶接機
４通板ロール
５ロープガイド
６Ａ，６Ｂピンチロール
７鋼帯クランプ装置
２０酸洗設備
２０ａ酸洗タンク
２０ｂリンスタンク
２０ｃドライヤー
Ｐ1，Ｐ2パスライン部
ｅ分岐部
ｆ合流部
Ｓ鋼帯
Ｓａ先行鋼帯
Ｓｂ後行鋼帯
ｘ尾端
ｙ先端
ｗ接合部
Ｒロープ
Ｒ_Ｃ１，Ｒ_Ｃ２ロープ部分 DESCRIPTION OF SYMBOLS 1 Rope winding device 2 Processing equipment 3 Welding machine 4 Feeding plate roll 5 Rope guide 6A, 6B Pinch roll 7 Steel strip clamp device 20 Pickling equipment 20a Pickling tank 20b Rinse tank 20c Dryer P1, P2 pass line part e Branch part f Junction S Steel strip Sa Preceding steel strip Sb Trailing steel strip x Tail end y Tip w Joint R Rope R _C1 , R _C2 Rope

Claims

The pass line through which the metal band (S) passes in the continuous line of the metal band having two pass line portions (P1), (P2) through which the metal band (S) is selectively passed through the line. Part (P1), a method for switching (P2),
A rope take-up device (1) that holds the rope (R) for pulling the metal band and can feed and take up the rope (R) is installed, and a pass line is formed in the steps [i] to [d] below. (P1), (P2) switching method for switching the pass line in the continuous line of the metal band (however, the path line part where the metal band does not pass through the switching is referred to as the “old path "Line part", the pass line part through which the metal band passes through by switching is called "newly used pass line part").
[A] The metal strip (S) in the stopped state is cut at a position upstream of the branch line (e) of the pass line portions (P1) and (P2), and the preceding metal strip (Sa) and the following metal Separated into strips (Sb).
[B] The preceding metal strip (Sa) is moved to pass through the old pass line part (P1) or (P2), and the tail end of the preceding metal band (Sa) is passed through the pass line parts (P1), (P2). In the vicinity of the merging portion (f).
[C] It is introduced into the pass line from the position upstream of the branch part (e) of the pass line parts (P1) and (P2), and passes into the newly used pass line part (P1) or (P2). The leading end of the rope (R) is connected to the tail end of the preceding metal strip (Sa), and then the rope (R) is wound up by the rope winding device (1) to pull the leading metal strip (Sa). Then, it is pulled into the newly used pass line part (P1) or (P2), and the tail end of the preceding metal strip (Sa) is upstream of the branch part (e) of the pass line parts (P1) and (P2). To be located.
[D] After the connection between the tail end of the preceding metal strip (Sa) and the rope (R) is released, the tail end of the preceding metal strip (Sa) and the tip of the following metal strip (Sb) are joined by welding. Then, the switching of the pass line portions (P1) and (P2) is completed.

2. The method for switching a pass line in a continuous line of metal bands according to claim 1, wherein the pass lines (P1) and (P2) are switched in the following steps [i] to [vi].
[I] The metal strip (S) in a stopped state is cut at a position upstream of the branch portions (e) of the pass line portions (P1) and (P2), and the preceding metal strip (Sa) and the subsequent metal strip After separation into (Sb), the tip of the rope (R) held by the rope winding device (1) is connected to the tail end of the preceding metal strip (Sa).
[Ii] The preceding metal strip (Sa) is moved, and while pulling the rope (R) connected to the tail end, the previously used pass line part (P1) or (P2) is passed through, and the leading metal strip ( The tail end of Sa) is positioned in the vicinity of the merging portion (f) of the pass line portions (P1) and (P2).
[Iii] The connection between the tail end of the preceding metal strip (Sa) and the rope (R) is released, and the rope (R) is placed at a position near the branching portion (e) of the pass line portions (P1) and (P2). By dividing, the rope portion (R _C1 ) remains in the old pass line portion (P1) or (P2).
[Iv] One end of the rope portion ( _RC2 ) left in the newly used pass line portion (P1) or (P2) at the previous switching is used as the tail end of the preceding metal strip (Sa). At the same time, the other end of the rope portion (R _C2 ) is connected to the tip of the rope (R) held by the rope winding device (1).
[V] By winding the rope (R) (including the rope portion ( _RC2 ) connected to the rope (R) in the step (iv)) by the rope winding device (1), the preceding metal strip (Sa) is pulled into the newly used pass line part (P1) or (P2), and the tail end of the preceding metal strip (Sa) is branched into the pass line parts (P1), (P2) (e) It is located upstream of the line.
[Vi] After releasing the connection between the tail end of the preceding metal strip (Sa) and the rope (R), the tail end of the preceding metal strip (Sa) and the tip of the following metal strip (Sb) are joined by welding. Then, the switching of the pass line portions (P1) and (P2) is completed.

The pass line portion (P1) is a pass line portion having a processing facility for a metal strip, and the pass line portion (P2) is a pass line portion for bypassing the processing facility. Or the switching method of the pass line in the continuous line of the metal strip of 2.

3. The method for switching a pass line in a continuous line of metal bands according to claim 1 or 2, wherein each of the pass line parts (P1) and (P2) is a pass line part having a metal band processing facility.