JP6269412B2 - Side trim apparatus, side trim method, and steel plate manufacturing method - Google Patents

Side trim apparatus, side trim method, and steel plate manufacturing method Download PDF

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JP6269412B2
JP6269412B2 JP2014192437A JP2014192437A JP6269412B2 JP 6269412 B2 JP6269412 B2 JP 6269412B2 JP 2014192437 A JP2014192437 A JP 2014192437A JP 2014192437 A JP2014192437 A JP 2014192437A JP 6269412 B2 JP6269412 B2 JP 6269412B2
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steel plate
side trim
gap
lower blade
ear
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JP2016060028A (en
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大朗 作本
大朗 作本
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JFE Steel Corp
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Description

本発明は、薄鋼板のリコイルライン等に設置されたサイドトリム装置において、薄鋼板の幅方向端部のせん断後の耳屑詰りを防止する技術に関する。   The present invention relates to a technique for preventing clogging of ear dust after shearing at the end in the width direction of a thin steel plate in a side trim device installed on a recoil line or the like of the thin steel plate.

薄鋼板（以下では、単に鋼板という）のリコイルライン等では、鋼板の幅方向端部を切り落として鋼板の幅寸法を揃えるサイドトリム装置が設けられている。サイドトリム装置は、図５に示すように、一対の円盤状の上刃２ａおよび下刃２ｂを２セット備えており、鋼板幅方向の両端をそれぞれせん断する。上刃２ａと下刃２ｂは、鋼板幅方向にギャップを有して配されている。上刃２ａは、高さが固定されており、下刃２ｂが回転しながら上方に移動することで、鋼板端部をせん断する。   In a recoil line or the like of a thin steel plate (hereinafter simply referred to as a steel plate), a side trim device is provided that cuts off the end portion in the width direction of the steel plate to align the width of the steel plate. As shown in FIG. 5, the side trim device includes two sets of a pair of disk-like upper blades 2 a and lower blades 2 b, and shears both ends in the steel plate width direction. The upper blade 2a and the lower blade 2b are arranged with a gap in the steel plate width direction. The upper blade 2a has a fixed height, and the lower blade 2b moves upward while rotating, thereby shearing the end of the steel plate.

サイドトリム装置の出側には、シュート５、６が設置されている。シュート５の入側の上部には、耳屑１をシュート５内へガイドするウェイト押さえ７が設置されている。   Chutes 5 and 6 are installed on the exit side of the side trim device. A weight presser 7 for guiding the ear dust 1 into the chute 5 is installed at the upper part on the entrance side of the chute 5.

上刃２ａおよび下刃２ｂによってせん断された帯状の耳屑１は、シュート５、６へ順次移動していく。   The strip-shaped ear dust 1 sheared by the upper blade 2a and the lower blade 2b sequentially moves to the chutes 5 and 6.

しかしながら、鋼板の強度が高い場合などでは、図６に示すように、耳屑１がシュート５から飛び出したり、図７に示すように、耳屑１が曲がりくねってシュート５内で詰ることがある。このようなトラブルが発生した場合は、サイドトリム装置や、サイドトリム装置の出側セクションを停止して耳屑１を除去する必要があり、生産性の低下を招く。   However, when the strength of the steel plate is high, the ear dust 1 may jump out of the chute 5 as shown in FIG. 6, or the ear dust 1 may bend and clog in the chute 5 as shown in FIG. 7. When such a trouble occurs, it is necessary to stop the side trim device and the exit side section of the side trim device to remove the ear dust 1, resulting in a decrease in productivity.

このような問題に対し、従来より、鋼板のせん断後の耳屑詰りを防止する技術が種々提案されている。   Conventionally, various techniques for preventing clogging of ear dust after shearing of a steel sheet have been proposed for such problems.

例えば、特許文献１には、サイドトリム装置で発生した耳屑を受けるシュートの下面側に、耳屑引き落とし装置を設置し、この耳屑引き落とし装置により耳屑をシュートの下端部に引き落とす技術が開示されている。   For example, Patent Document 1 discloses a technique in which an ear dust dropping device is installed on the lower surface side of a chute that receives ear dust generated by a side trim device, and the ear dust is dropped to the lower end of the chute by the ear dust dropping device. Has been.

特開２０１０−１７７８２号公報JP 2010-177782 A

しかしながら、特許文献１に開示されたサイドトリム装置では、耳屑がシュートまで辿り着かずに、シュートの手前で外側に反れるトラブルについては、何ら考慮されていない（図６参照）。   However, in the side trim device disclosed in Patent Document 1, no consideration is given to the trouble that the ear dust does not reach the chute and warps outward before the chute (see FIG. 6).

本発明は、このような問題点に対してなされたものであり、耳屑を正常な軌道で排出することにより、トリム外れを低減することができるサイドトリム装置、サイドトリム方法および鋼板の製造方法を提供することを目的とする。   The present invention has been made for such problems, and a side trim device, a side trim method, and a steel plate manufacturing method that can reduce trim removal by discharging ear dust in a normal orbit. The purpose is to provide.

本発明は、上記のような目的を達成するために、以下のような特徴を有している。
［１］ 鋼板のサイドトリムを行う一対の上刃および下刃と、
鋼板のトリム時に、上刃および下刃の少なくとも一方に、上刃と下刃との鋼板幅方向のギャップが拡がる方向へ負荷を与える負荷部材とを備えたサイドトリム装置。
［２］ 鋼板のトリム時に、鋼板のサイドトリムを行う一対の上刃および下刃の少なくとも一方に、上刃と下刃の鋼板の幅方向のギャップが拡がる方向へ負荷を与えるサイドトリム方法。
［３］ ［２］に記載のサイドトリム方法を用いた鋼板の製造方法。 In order to achieve the above object, the present invention has the following features.
[1] A pair of upper and lower blades for side trimming of the steel sheet;
A side trim device including a load member that applies a load to at least one of an upper blade and a lower blade in a direction in which a gap in the steel plate width direction between the upper blade and the lower blade widens during trimming of the steel plate.
[2] A side trim method in which a load is applied to at least one of a pair of upper blades and lower blades that perform side trim of a steel plate in a direction in which a gap in the width direction of the steel plate between the upper blade and the lower blade widens during trimming of the steel plate.
[3] A method for producing a steel sheet using the side trim method according to [2].

本発明に係るサイドトリム装置、サイドトリム方法、鋼板の製造方法によれば、薄板鋼板のせん断後の耳屑詰りの発生を低減することができる。   According to the side trim device, the side trim method, and the steel plate manufacturing method according to the present invention, it is possible to reduce the occurrence of clogging of ear dust after shearing of a thin steel plate.

本発明の実施の形態に係るサイドトリム装置の構成を示す図である。It is a figure which shows the structure of the side trim apparatus which concerns on embodiment of this invention. 比較例における耳切り前から耳切り後に至るまでの閉方向移動量を示す図である。It is a figure which shows the closing direction moving amount | distance from before an ear cut in a comparative example to after an ear cut. 本発明例における耳切り前から耳切り後に至るまでの閉方向移動量を示す図である。It is a figure which shows the closing direction moving amount | distance from before an ear cut in the example of this invention to after an ear cut. 実施例におけるサイドトリム装置の出側セクションの停止時間を示す図である。It is a figure which shows the stop time of the exit side section of the side trim apparatus in an Example. サイドトリム装置において正常に耳屑がシュート内に回収される様子を示す図である。It is a figure which shows a mode that ear dust is normally collect | recovered in a chute | shoot in a side trim apparatus. サイドトリム装置において耳屑がシュートから外に飛び出すトラブルが発生した様子を示す図である。It is a figure which shows a mode that the trouble which the ear waste jumps out of a chute | shoots generate | occur | produced in the side trim apparatus. サイドトリム装置において耳屑が曲がりくねってシュート内で詰るトラブルが発生した様子を示す図である。It is a figure which shows a mode that the problem which the ear dust twisted in the side trim apparatus, and was jammed in a chute | shoot occurred.

以下、添付した図面を参照し、本発明の実施の形態について説明する。   Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

本発明者は、耳屑のトラブルが発生する原因について鋭意検討を行った。鋼板のトリム時には、サイドトリム装置の上刃および下刃は、鋼板から、上刃と下刃とのギャップが閉まる方向にスラスト力を受ける。これにより、上刃と下刃とのギャップが狭くなり、上刃と下刃によってせん断された切屑の挙動が不安定となる。   The present inventor has intensively studied the cause of the problem of ear dust. When the steel plate is trimmed, the upper and lower blades of the side trim device receive a thrust force from the steel plate in a direction in which the gap between the upper blade and the lower blade is closed. Thereby, the gap between the upper blade and the lower blade is narrowed, and the behavior of the chips sheared by the upper blade and the lower blade becomes unstable.

本発明者は、以上の検討から、上刃または下刃が鋼板から受けるスラスト力を相殺させることで、トリム外れの発生を低減できると考えた。   From the above examination, the present inventor considered that the occurrence of trim detachment can be reduced by offsetting the thrust force that the upper blade or the lower blade receives from the steel plate.

図１は、本発明の実施の形態に係るサイドトリム装置の構成を示す図である。図１は、サイドトリム装置を鋼板の進行方向から見た図である。   FIG. 1 is a diagram showing a configuration of a side trim device according to an embodiment of the present invention. FIG. 1 is a view of the side trim device as seen from the traveling direction of the steel plate.

サイドトリム装置は、一対の円盤状の上刃２ａおよび下刃２ｂを備えている。上刃２ａと下刃２ｂは、鋼板１０の幅方向にギャップＷを有している。上刃２ａは、高さ位置が固定されており、下刃２ｂが上方に移動可能に設置されている。上刃２ａおよび下刃２ｂを回転させて、下刃２ｂを上方に移動させることで、鋼板１０の幅方向端部をせん断する。   The side trim device includes a pair of disc-shaped upper blade 2a and lower blade 2b. The upper blade 2 a and the lower blade 2 b have a gap W in the width direction of the steel plate 10. The upper blade 2a has a fixed height position, and the lower blade 2b is installed so as to be movable upward. By rotating the upper blade 2a and the lower blade 2b and moving the lower blade 2b upward, the end in the width direction of the steel plate 10 is sheared.

下刃２ｂには、皿バネ８を介してウォームジャッキ４が取り付けられている。ウォームジャッキ４は、下刃２ｂを矢印Ｂの方向へ押し込む。皿バネ８は、ウォームジャッキ４から下刃２ｂに過度な負荷がかかった際に、収縮することで、下刃２ｂを保護するように構成されている。   A worm jack 4 is attached to the lower blade 2b via a disc spring 8. The worm jack 4 pushes the lower blade 2b in the direction of arrow B. The disc spring 8 is configured to protect the lower blade 2b by contracting when an excessive load is applied from the worm jack 4 to the lower blade 2b.

鋼板１０の端部のせん断時には、下刃２ｂは、矢印Ａで示すように、鋼板１０からギャップＷが狭くなる方向に力を受ける。これに対し、本発明では、上刃２ａと下刃２ｂのギャップＷが拡がる方向に負荷を与える負荷手段（ウォームジャッキ４）を設け、鋼板１０のトリム時に、ウォームジャッキ４を矢印Ｂの方向に押し込むことで、上刃２ａと下刃２ｂのギャップＷが拡がる方向に負荷を与えるように構成している。   When the end of the steel plate 10 is sheared, the lower blade 2 b receives a force from the steel plate 10 in the direction in which the gap W becomes narrower, as indicated by the arrow A. On the other hand, in the present invention, load means (worm jack 4) for applying a load in the direction in which the gap W between the upper blade 2a and the lower blade 2b widens is provided, and the worm jack 4 is moved in the direction of arrow B when the steel plate 10 is trimmed. By pushing, the load is applied in the direction in which the gap W between the upper blade 2a and the lower blade 2b widens.

なお、ウォームジャッキ４を矢印Ｂの方向に押し込む移動量は、０．０２ｍｍ以下とすることが好ましい。   The amount of movement for pushing the worm jack 4 in the direction of arrow B is preferably 0.02 mm or less.

図５に示すように、サイドトリム装置の下方には、シュート５、６が設置されている。シュート５内の入口の上部には、耳屑１をシュート５内へガイドするウェイト押さえ７が設置されている。   As shown in FIG. 5, chutes 5 and 6 are installed below the side trim device. A weight presser 7 for guiding the ear dust 1 into the chute 5 is installed at the upper part of the entrance in the chute 5.

本発明に係るサイドトリム装置によれば、鋼板１０のトリム時に、上刃２ａと下刃２ｂのギャップＷが拡がる方向に下刃２ｂに負荷を与えることで、下刃２ｂが鋼板１０から受ける、上刃２ａと下刃２ｂとのギャップが狭まる方向のスラスト力を相殺し、トリミング処理後の耳屑の挙動を安定させることができる。   According to the side trim device according to the present invention, when the steel plate 10 is trimmed, the lower blade 2b receives from the steel plate 10 by applying a load to the lower blade 2b in a direction in which the gap W between the upper blade 2a and the lower blade 2b expands. The thrust force in the direction in which the gap between the upper blade 2a and the lower blade 2b is reduced can be offset, and the behavior of the ear dust after the trimming process can be stabilized.

本発明は、上記の実施の形態に限られず、種々の設計変更を実施することができる。   The present invention is not limited to the above embodiment, and various design changes can be implemented.

例えば、上述では、上刃２ａの高さ位置を固定し、下刃２ｂを上方に移動させると説明したが、下刃２ｂの高さ位置を固定して、上刃２ａを下方に回転させながら移動させるように構成してもよい。   For example, in the above description, the height position of the upper blade 2a is fixed and the lower blade 2b is moved upward, but the height position of the lower blade 2b is fixed and the upper blade 2a is rotated downward. You may comprise so that it may move.

また、上述では、下刃２ｂのみにギャップＷが拡がる方向に負荷を与えるとしたが、上刃２ａに対してギャップＷが拡がる方向に負荷を与えるように構成してもよく、上刃２ａおよび下刃２ｂの両方に対してギャップＷが拡がる方向に負荷を与えるように構成してもよい。   In the above description, only the lower blade 2b is loaded in the direction in which the gap W expands. However, the upper blade 2a may be configured to load in the direction in which the gap W expands. You may comprise so that a load may be given to the lower blade 2b in the direction where the gap W expands.

従来のサイドトリム装置（比較例）と、本発明を適用したサイドトリム装置（本発明例）を用いて、鋼板１０のサイドトリム処理を行った。具体的には、本発明例では、トリム時に、下刃２ｂにギャップＷが拡がる方向に負荷を与えた。   The side trim process of the steel plate 10 was performed using the conventional side trim apparatus (comparative example) and the side trim apparatus (invention example) to which the present invention is applied. Specifically, in the example of the present invention, a load is applied to the lower blade 2b in the direction in which the gap W expands during trimming.

図２は、比較例における鋼板１０の端部のせん断（以下、耳切りという）前から耳切り後に至るまでの閉方向移動量を示す図であり、図３は、本発明例における耳切り前から耳切り後に至るまでの閉方向移動量を示す図である。ここで、閉方向移動量とは、図１のギャップＷが狭まる方向の変化量をいう。   FIG. 2 is a diagram showing the amount of movement in the closing direction from the end of the steel plate 10 in the comparative example before shearing (hereinafter referred to as “ear cut”) to the end of the ear cut, and FIG. It is a figure which shows the closing direction moving amount | distance until it reaches after an ear cut. Here, the amount of movement in the closing direction refers to the amount of change in the direction in which the gap W in FIG.

図２に示す比較例では、耳切り前から閉方向移動量が次第に大きくなり、高速通板時に最大となる。そして、高速通板時から耳切り後に至るまで、閉方向移動量が次第に小さくなる。   In the comparative example shown in FIG. 2, the amount of movement in the closing direction gradually increases from before the ear-cutting, and becomes the maximum during high-speed feeding. Then, the amount of movement in the closing direction gradually decreases from the time of high-speed feeding to the time after the ear-cutting.

これに対し、図３に示す本発明例では、耳切り前から耳切り後に至るまで、閉方向移動量がほとんど変化せず一定となっている。   On the other hand, in the example of the present invention shown in FIG. 3, the amount of movement in the closing direction hardly changes from before the ear cut to after the ear cut.

図４は、サイドトリム装置の出側セクションの停止時間を示す図である。図４は、ある年のサイドトリム装置の出側セクションの停止時間を月ごとに並べた図である。本発明を適用した、凡例の４に示す月の直後から、停止時間が減少していることから、本発明を適用することで、出側セクションの停止時間を低減し、生産性を向上させることができることが分かる。   FIG. 4 is a diagram illustrating a stop time of the exit section of the side trim device. FIG. 4 is a diagram in which stop times of the exit section of a side trim device of a certain year are arranged for each month. Since the stop time has decreased immediately after the month shown in the legend 4 to which the present invention is applied, by applying the present invention, the stop time of the outgoing section can be reduced and productivity can be improved. You can see that

１ 耳屑
２ａ 上刃
２ｂ 下刃
４ ウォームジャッキ
５、６ シュート
７ ウェイト押さえ
８ 皿バネ
１０ 鋼板 DESCRIPTION OF SYMBOLS 1 Ear waste 2a Upper blade 2b Lower blade 4 Worm jack 5, 6 Chute 7 Weight presser 8 Belleville spring 10 Steel plate

Claims (3)

鋼板のサイドトリムを行う一対の上刃および下刃と、
鋼板のトリム時に、上刃および下刃に、上刃と下刃との鋼板幅方向のギャップが拡がる方向へ負荷を与えて、上刃と下刃とのギャップが閉まる方向に働くスラスト力を相殺する負荷部材とを備えたサイドトリム装置。 A pair of upper and lower blades for side trimming of the steel sheet;
When trimming steel plates, the upper and lower blades are loaded in the direction in which the gap in the steel plate width direction between the upper and lower blades widens , offsetting the thrust force acting in the direction in which the gap between the upper and lower blades closes. A side trim device comprising a load member for performing the operation. 鋼板のトリム時に、鋼板のサイドトリムを行う一対の上刃および下刃に、上刃と下刃との鋼板幅方向のギャップが拡がる方向へ負荷を与えて、上刃と下刃とのギャップが閉まる方向に働くスラスト力を相殺するサイドトリム方法。 When trimming a steel plate, a load is applied to the pair of upper and lower blades that perform side trim of the steel plate in the direction in which the gap in the steel plate width direction between the upper and lower blades widens. Side trim method that cancels out the thrust force acting in the closing direction . 請求項２に記載のサイドトリム方法を用いた鋼板の製造方法。   The manufacturing method of the steel plate using the side trim method of Claim 2.
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