487740 A7 ____B7__ 五、發明說明（/ ) [發明的詳細說明] 本發明關於一種用於將金屬條帶，特別是鋼帶作熔浸 鍍覆的方法，其中該金屬條帶垂直地導經一個容納熔融之 鍍覆金屬的容器以及導經一個接在前面的導引通道，在該 導引通道中，在鍍覆金屬中利用一個電磁的漂移場感應生 出感應電流，該感應電流與該電磁漂移場交替作用施一股 電磁力量以將該鍍覆金屬保持住。 在歐洲專利EP 0 673 444 B1發表了一種此類的方法。 在該案中達成此目的之方式係提供一種方法，以使鐵水在 導引通道以及在容器中平靜，這是因爲該磁力係不平均分 佈且會生漩渦之故。這種習知的解決方案對此之重點在於 使一個恆定的直流或交流電場和該導引通道的上區域容器 附近的漂移場反向對立，該直流或交流電場使在此區域中 鍍覆金屬中的漩渦作用減緩。 另一方法見於國際專利WO 96/03533，利用設在導引 通道周圍的量場產生器，而造成一個振動的場。但此感應 的力量只能將導引通道的電磁式封閉件關閉，此外無法達 成其他目的。 此外，還有一種習知方法（日專利特開/公昭50-86446，將鋼帶施以一種鍍覆金屬，然而其中該鍍覆金屬係 由側邊在感應器下方放入並向偏轉。 在美專利US 5,769，158中提到將一條金屬條帶拉經一 條弧形且受流體靜力作用的通道，其中該通道呈一種相通 之管的方式操作。因此不需電磁式漂移場(Wanderfeld) ’特 3 ___ 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） -------------裝--------訂---------線 (請先閱讀背面之注意事項再填寫本頁) 487740 A7 _____B7____ 五、發明說明（）） 別是因爲金屬條帶並非垂直導進者。鍍覆金屬利用一個浸 入儲存容器中的泵在一分別的管路中泵入該弧形通道，且 將過量的熔融金屬導回。在該弧形通道中，金屬條帶在該 弧形通道中在數個位置經由突出部導進。因此這種方法只 是用熔融金屬柱段的流體靜力的壓力操作。 在美專利US 5,015,509發表的方法與此甚相似，係用 相同原理，但沒有管形的弧形通道。 姑且不論最後所述的二種習知方法，所有習知解決方 法用施覆金屬從容器出來向下作流體動刀式的密封，因此 係用基本所需之物理量來解決，如此才能達成目的。 使用電磁力量在鐵水中造成漩渦流的感應，這種漩渦 流在鐵水中產生垂直的合力。電磁漂移場產生的力量（它 垂直於金屬表面產生一些力量，這些力量對於對稱的情形 正好抵消，但這些力量會隨著從金屬條帶表面到感應器表 面的距離減少而增加。但物理場對金屬條帶表面的對稱位 置在實際上正是一種例外的情形，這種例外情形很少能達 成。對於正常的情形，金屬條帶在感應器中在中央位置離 開，則此拉力向感應器變大（起始運動首先係朝向該感應 器），而此拉力向著一感應器（起始運動首先由該感應器 離開）變小。因此如果金屬條帶在導引通道中的位置對於 用於電磁流體動力式的封閉件而言係不穩定(labil)者，則只 還維持一個機械式縱向拉力，它在程序過程時倚在金屬條 帶上，但它不足以將金屬條帶保持在其穩定的中央位置。 這種位置的不穩定性一方面影響金屬條帶的中央位置 一 _4 __ 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） -------------裝--------訂---------線 (請先閱讀背面之注意事項再填寫本頁) A7 487740 ___B7___ 五、發明說明（3 ) ，另一方面也影響金屬條帶平行於條帶在導引通道中的跑 動方向的形狀。在一鋼帶中存在的輕微的平坦度的缺陷同 樣會變大，換言之，在鋼帶中的十字弓（弩）狀（Cross-Bow) 會加大 。最先的一些試驗顯示， 在導引通道的電磁流 體動力式的封閉件中作用的力量配合施覆溫度導致帶形狀 之塑性改變。除了該十字弓狀(Cross-Bow)的偏差外，另外 還測知平行於鋼帶跑動方向有鋼帶形狀的S形偏差。所觀 測到的變形的曲線形狀大於或等於二次方的數量級。 本發明的目的在於提供一種措施，以調整金屬條帶在 導引通道及/或在鍍覆金屬的容器中的位置。 這種目的，依本發明達成之道係將該金屬條帶（1)在運 動時，藉著垂直於條帶表面（la)的流體靜力或流體動力式 的用在該容器及/或在該導引通道中將其位置及形狀穩定化 。如此可進一步避免鋼帶形狀缺陷，且金屬條帶在其中央 位置穩定化。 另一特點在於，使用該液體鍍覆金屬以將該金屬條帶 或金屬帶作穩定化的支持。如此，可達成一種特別的效果 ’其中係一方面造成支持作用，另一方面用該鍍覆金屬作 殿覆。 就金屬帶瑕疵的改善方面，可進一步用以下方式達成 :將該金屬條帶在一個或數個隔一定距離的條帶位置上在 一邊或在兩邊作流體靜力式或流體動力式的穩定作用。由 於適當選擇支持位置，可在金屬帶中產生垂直於金屬條帶 縱方向的S形狀，這種S形狀可就平行於金屬帶跑動方向 本紙張尺度ϋ中國國家標準（CNS)A4規格（21Q x 297公爱)" -------------裝--------訂---------線 (請先閱讀背面之注意事項再填寫本頁) 487740 A7 ______B7_ 五、發明說明（4 ) 該金屬帶的彎曲方面將慣性力矩提高到使該金屬帶平坦可 且平平地經該導引通道導進。 在同時作造時的情形下，在中央連續定位的作用可做 成使該金屬條帶在個別或成對的交錯對立的條帶位置以流 體靜力方式或流體動力方式穩定化。 上述的目的係利用一種用於將金屬條帶，特別是鋼帶 作熔浸鍍覆的裝置[在該裝置中，該金屬條帶垂直地導經一 個容納熔融之鍍覆金屬的容器以及導經一個接在前面的導 引通道，在該導引通道中，在鍍覆金屬中利用一個電磁的 漂移場感應生出感應電流，該感應電流與該電磁漂移場交 替作用施一股電磁力量以將該鍍覆金屬保持住]依本發明用 以下發式達成：在該容器及/或導引通道的區域中設有支 持元件，該支持元件受到流體靜力或流體動力方式的作用 。這些支持元件可做成呈各種大不相同的種類、形式及作 用方式。 一種本發明的設計方式在於將該支持元件利用該熔融 的鍍覆金屬施以流體靜力或流體動力方式的作用。這種方 式一方面結合了支持效應以避免十字弓作用或其他平坦度 的瑕失，另一方面將鍍覆金屬施覆在此位置。 在此該支持作用也可以用一種方式作用，使得該支持 元件構成一條供應通道，該供應通道接到該熔融之鍍覆金 屬的一個熔融金屬泵，且具有設在出口端的噴嘴，離開噴 嘴的金屬熔融物造成這種支持作用。 依一種設計，該噴嘴有一個「通道變寬部」，在出口 ____ 6___ 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） ---I-----------------訂--------- (請先閱讀背面之注意事項再填寫本頁) 487740 A7 ____B7__ 五、發明說明（r ) 端形成，且兩側的支持突部定出界限。在支持突部之間該 金屬融熔物可產生一個寬的支持面或施覆面。 基本上，平坦度的瑕失，例如十字弓形，可藉著支持 元件隔正確間隔設置而影響或消除。爲此宜使支持元件個 別地相間隔嵌夾在金屬條帶的一側或兩側上。 在圖式中顯示本發明的實施例並在以下詳細說明。 圖式中： 第1圖A〜第1圖D係成對之支持元件設置方式的不 同構形的原理圖； 第2圖A〜第2圖C係具個別支持元件的設置的原理 圖； 第3圖A係經過該具有支持元件的容器在導引通道區 域的一剖面圖； 第3圖B係經過該具有支持元件的容器在容器中及在 槽液面上方的一剖面圖； 第4圖A係經過具有數個成對支持元件的容器的剖面 圖； 第4圖B係經該容器垂直於第4圖A的一剖面圖。 〔圖號說明〕 (1) 金屬條帶 (la) 金屬條帶表面 (lb) 左側 (lc) 右側 (2) 鍍覆金屬 一 _____7__ 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） -------------裝--------訂---------線 (請先閱讀背面之注意事項再填寫本頁) 487740 A7 _B7 五、發明說明（^ ) (3) 容器 (3a) 容器壁 (3b) 容器壁 (4) 導引通道 (5) 條帶位置 (6) 條帶位置 (7) 條帶位置 (8) 條帶位置 (9) 支持元件 (10) 供應通道 (l〇a) 通道變寬部 (11) 出口端 (12) 噴嘴 (13) 支持突部 (14) 支持突部 (15 入口區域 (16) 槽液位面 (17) 導離通道 (18) 拉離方向 (19) 液面凸凹狀 (20) 主線圈 (請先閱讀背面之注意事項再填寫本頁) 第1圖中，用於將金屬條帶（1)〔特別是鋼帶，如圖示 〕作熔浸鍍覆的方法〔在此方法中，金屬條帶（1)垂直通過 一個容納該熔融之鍍覆金屬的容器（圖未示）且通過一個 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） 487740 A7 _ --____B7___ 五、發明說明（Γ)) 接在則面的導引通道(2)過去，在該導引通道中利用一股電 磁漂移場在鍍覆金屬中感應生出感應電流，這些感應電流 與該電磁漂移場交替作用施一股電磁力量以將鍍覆金屬保 持住〕中，該金屬條帶(1)在運動時，係利用流體靜力或流 體動力方式的作用垂直於條帶表面（la)作用到容器中及/ 或在導引通道中作用，而將它的位置穩定化。在此實施例 中’使用該液體鍍覆金屬(2)將金屬條帶（1)作具有穩定化作 用的支持。該金屬條帶（1)的流體靜力或流體動力式的支持 作用可發生在一個「條帶位置」（5)(第1圖A)，或在數個 (二個）相間隔的條帶位置(5)與(6)(第1圖B)或在三個條 帶位置(5)(6)⑺(第1圖C)及在四個條帶位置(第1圖D)。 在此’該金屬條帶（1)以流體靜力或流體動力的方式在 個別的條帶位置(5)(第2圖A)或在成對交錯對立的條帶位 置(5)與(6)(第2圖B)上或在數個條帶位置(5)(6)(7)(第2圖 C)確實保持住。 該受流體靜力或流體動力方式作用支持元件(9)在該容 器(3)及/或導引通道(4)的區域內依第一圖A〜D及第2圖 A〜D的構形達成。其設計係依該支持元件(9)是否利用該 熔融之鍍覆金覆(2)作用而定，這點是對所有此處所示的實 施例的先決條件。此支持元件(9)構成一個供應通道（1〇)， 該供應通道接到該熔融鍍覆金屬(2)的一個金屬泵，且在出 口端（11)有一噴嘴（12)。此噴嘴（12)在出口端構成一通道變 寬部（l〇a)，該變寬部被兩側之支持突部（⑶及（η)定出界限 〇 —____9 本紙張尺度適用中國國家標準（C^S)A4規^各（210 X 297公釐） " -------------裝--------訂---------線 (請先閱讀背面之注意事項再填寫本頁) 487740 A7 __B7___ 五、發明說明（y ) 依第3圖A與第3圖b，該支持元件(9)可設在容器(3) 的入口區域(15)(第3圖A)或在容器(3)本身內(第3圖B)。 也可在容器(3)的槽液位面（16)上方使用附加的支持元 件(9)。這些支持元件(9)各相對於該金屬條帶（1)嵌在該金屬 條帶⑴的一左側（lb)及或一右側（lc)上，以將之穩定化。一 種另外的作用爲：該用流體靜力或流體動力方式操作的支 持元件(9)同時可將鍍覆金屬作施覆。 在第4圖A及第4圖B中顯示支持元件在容器(3)中的 設置方式。數個在容壁(3a)與(3b)中水平方向上下設置延伸 的供應通道（10)具有噴嘴（12)，該噴嘴（12)具有通道變寬部 (l〇a)，鍍覆金屬(2)由該變寬部向上或向下出來。在該供應 鍍覆金屬(2)的供應通道（10)之間設有一個導離通道（17)，它 將過量的鍍覆金屬(2)再導至熔融金屬泵或一儲存室。利用 該電磁漂移場產生的凸凹狀液面(Meniskus)示於(19)。 第4圖B中顯示鋼帶形式的金屬條帶(1)的寬度，且顯 示從下往上的拉離方向（18)。此外可看到主線圖(20)的設置 。供應通道(10)的寬度同樣地見於第4圖B。 -------- 10 本紙張尺度適用中國國家標準（cns)a4規格（21〇 X 297公釐） -------------^-----------------線 (請先閱讀背面之注意事項再填寫本頁)487740 A7 ____B7__ V. Description of the invention (/) [Detailed description of the invention] The present invention relates to a method for melt-dip plating of a metal strip, especially a steel strip, wherein the metal strip is guided vertically through a housing The molten metal-plated container and the guide channel are connected in front. In the guide channel, an electromagnetic drift field is induced in the plated metal to generate an induced current, and the induced current and the electromagnetic drift field are induced. An alternating force applies an electromagnetic force to hold the plated metal. One such method is published in European patent EP 0 673 444 B1. The way to achieve this in this case is to provide a method to make the molten iron calm in the guide channel and in the container, because the magnetic force system is unevenly distributed and whirlpools are generated. The focus of this conventional solution is to reverse a constant DC or AC electric field and the drift field near the container in the upper area of the guide channel, which DC or AC electric field causes metal plating in this area. The vortex effect is moderated. Another method is found in international patent WO 96/03533, which uses a volume field generator provided around a guide channel to create a vibrating field. However, this induced force can only close the electromagnetic closure of the guide channel, and cannot achieve other purposes. In addition, there is a conventional method (Japanese Patent Laid-Open / Kosho 50-86446, in which the steel strip is coated with a plated metal, but the plated metal is placed under the inductor from the side and deflected. U.S. Patent No. 5,769,158 mentions pulling a metal strip through an arc-shaped and hydrostatically acting channel, where the channel operates as a communicating tube. Therefore, no electromagnetic drift field is required (Wanderfeld) 'Special 3 ___ This paper size is applicable to China National Standard (CNS) A4 (210 X 297 mm) ------------- Installation -------- Order ---- ----- Line (Please read the precautions on the back before filling this page) 487740 A7 _____B7____ V. Description of the Invention ()) Don't because the metal strip is not a vertical guide. The plated metal is pumped into the arc-shaped channel in a separate line using a pump immersed in a storage vessel, and the excess molten metal is conducted back. In the arc-shaped channel, metal strips are guided in the arc-shaped channel at several positions via protrusions. This method is therefore only operated with the hydrostatic pressure of the molten metal column segment. The method disclosed in U.S. Patent No. 5,015,509 is very similar to this, using the same principle, but without a tubular arc-shaped channel. Regardless of the two conventional methods mentioned at the end, all conventional solutions use a metal coating from the container down to make a fluid-knife-type seal. Therefore, the basic physical quantities are required to solve the problem. The use of electromagnetic force to induce a vortex in the molten iron creates a vertical resultant force in the molten iron. The force generated by the electromagnetic drift field (it produces some forces perpendicular to the metal surface, these forces just offset the symmetrical situation, but these forces increase as the distance from the surface of the metal strip to the surface of the inductor decreases. The symmetrical position of the surface of the metal strip is actually an exceptional case, which is rarely achieved. For the normal case, when the metal strip leaves in the center position in the inductor, the tensile force changes towards the sensor. Large (the initial motion is first directed towards the sensor), and this pulling force becomes smaller towards an inductor (the initial motion is first exited by the sensor). So if the position of the metal strip in the guide channel is for electromagnetic use The hydrodynamic closure is labil, and it only maintains a mechanical longitudinal tension. It leans on the metal strip during the procedure, but it is not enough to keep the metal strip in its stability. The instability of this position affects the central position of the metal strip on the one hand. _4 __ This paper size applies Chinese National Standards (CNS) A4 size (210 X 297 mm) ------------- install -------- order --------- line (please read the precautions on the back first) Fill out this page again) A7 487740 ___B7___ 5. The description of the invention (3), on the other hand, also affects the shape of the metal strip parallel to the running direction of the strip in the guide channel. A slight flatness existing in a steel strip The degree of defect will also increase, in other words, the cross-bow (Cross-Bow) in the steel belt will increase. The first experiments showed that in the electromagnetic fluid dynamic closure of the guide channel The applied force in combination with the application temperature leads to a plastic change in the shape of the strip. In addition to the Cross-Bow deviation, an S-shape deviation in the shape of the strip parallel to the running direction of the strip is also measured. Observed The shape of the obtained deformation curve is greater than or equal to the order of the square. The purpose of the present invention is to provide a measure to adjust the position of the metal strip in the guide channel and / or in the metal-plated container. For this purpose, The method achieved according to the present invention is that the metal strip (1) is moved perpendicular to the surface of the strip (la The hydrostatic or hydrodynamic type is used in the container and / or in the guide channel to stabilize its position and shape. This can further avoid the shape defect of the steel strip, and the metal strip is stabilized in its central position. Another feature is that the liquid is used to plate the metal to stabilize the metal strip or metal strip. In this way, a special effect can be achieved, in which the supporting effect is caused on the one hand, and the plating is used on the other hand With regard to the improvement of metal band defects, the following methods can be used to improve the defects of the metal band: The metal band is hydrostatically or on one side or both sides of the band at a certain distance. Hydrodynamic stabilization. Due to the proper selection of the support position, an S-shape perpendicular to the longitudinal direction of the metal strip can be generated in the metal strip. This S-shape can be parallel to the running direction of the metal strip. (CNS) A4 specifications (21Q x 297 public love) " ------------- install -------- order --------- line (please first Read the notes on the back and fill out this page) 487740 A7 ______B7_ V. Description of the invention (4) The bending aspect of the metal band increases the moment of inertia to make the metal band flat and guided through the guide channel. In the case of simultaneous fabrication, the effect of continuous positioning in the center can be used to stabilize the metal strip in a hydrostatic or hydrodynamic manner at individual or paired staggered opposite strip positions. The above-mentioned object is to utilize a device for melt-dip plating of a metal strip, particularly a steel strip [in which the metal strip is guided vertically through a container containing molten plated metal and the warp A leading channel is connected in the front. In the guiding channel, an electromagnetic drift field is induced in the plated metal to generate an induced current. The induced current and the electromagnetic drift field alternately apply an electromagnetic force to apply the electromagnetic force. The plated metal is held] according to the invention with the following hair style: a support element is provided in the region of the container and / or the guide channel, and the support element is subjected to hydrostatic or hydrodynamic means. These support elements can be made in a wide variety of types, forms, and modes of operation. A design mode of the present invention is to apply the supporting element to hydrostatic or hydrodynamic mode by using the molten plated metal. This approach combines support effects on the one hand to avoid crossbow effects or other flatness defects and on the other hand applies plated metal in this position. The supporting effect can also be used in a way that the supporting element constitutes a supply channel which is connected to a molten metal pump of the molten plated metal and has a nozzle provided at the outlet end, and the metal leaving the nozzle The melt creates this support. According to a design, the nozzle has a "channel widening part", at the exit ____ 6___ This paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) --- I ------- ---------- Order --------- (Please read the notes on the back before filling out this page) 487740 A7 ____B7__ V. Description of the invention (r) The end is formed, and the Support the protrusions to set boundaries. The molten metal between the support protrusions can create a wide support or application surface. Basically, imperfections in flatness, such as cross bows, can be affected or eliminated by the support elements being placed at the correct spacing. To this end, it is preferred that the supporting elements are individually clamped at intervals on one or both sides of the metal strip. Examples of the present invention are shown in the drawings and described in detail below. In the drawings: FIG. 1A to FIG. 1D are schematic diagrams of different configurations of the supporting element arrangement in pairs; FIG. 2A to 2C are schematic diagrams of the arrangement of individual supporting elements; Figure 3 is a cross-sectional view of the container with the supporting element in the guide channel area; Figure 3 is a cross-sectional view of the container with the supporting element in the container and above the tank liquid level; Figure 4 A is a cross-sectional view through a container having a pair of supporting elements; FIG. 4 is a cross-sectional view perpendicular to FIG. 4A through the container. [Illustration of drawing number] (1) Metal strip (la) Metal strip surface (lb) Left side (lc) Right side (2) Plated metal 1 _____7__ This paper size applies to China National Standard (CNS) A4 specifications (210 X 297 mm) ------------- install -------- order --------- line (please read the precautions on the back before filling this page) 487740 A7 _B7 V. Description of the invention (^) (3) Container (3a) Container wall (3b) Container wall (4) Guide channel (5) Strip position (6) Strip position (7) Strip position (8 ) Strip position (9) Support element (10) Supply channel (10a) Channel widening section (11) Exit end (12) Nozzle (13) Supporting protrusion (14) Supporting protrusion (15 Inlet area (16 ) Tank level surface (17) Departure channel (18) Pull-off direction (19) Liquid surface convex-concave (20) Main coil (Please read the precautions on the back before filling this page) Figure 1 is used to Metal strip (1) [especially steel strip, as shown in the figure] is used as a method of hot-dip plating [in this method, the metal strip (1) passes vertically through a container containing the molten plated metal (not shown) (Shown) and apply a Chinese standard Home Standard (CNS) A4 specification (210 X 297 mm) 487740 A7 _ --____ B7___ V. Description of the invention (Γ)) The guide channel (2) connected to the front is used in this guide channel The electromagnetic drift field induces induced currents in the plated metal. These induced currents and the electromagnetic drift field alternately apply an electromagnetic force to hold the plated metal.] In the metal strip (1), The use of hydrostatic or hydrodynamic means acts perpendicularly to the surface of the strip (la) into the container and / or in the guide channel to stabilize its position. In this embodiment, the liquid plating metal (2) is used to support the metal strip (1) as a stabilizer. The hydrostatic or hydrodynamic support of the metal strip (1) can take place in a "strip position" (5) (Figure 1A), or in several (two) spaced strips Positions (5) and (6) (Figure 1B) or at three strip positions (5) (6) ⑺ (Figure 1C) and at four strip positions (Figure 1D). Here the metal strip (1) is hydrostatically or hydrodynamically located at individual strip positions (5) (Figure 2A) or at pairs of staggered opposite strip positions (5) and (6 ) (Figure 2B) or at several strip positions (5) (6) (7) (Figure 2C). The hydrostatic or hydrodynamically acting support element (9) is in the configuration of the container (3) and / or the guide channel (4) according to the configurations of the first diagram A to D and the second diagram A to D Reached. Its design depends on whether the supporting element (9) utilizes the molten gold plating (2) effect, which is a prerequisite for all the embodiments shown here. This supporting element (9) constitutes a supply channel (10) which is connected to a metal pump of the molten plated metal (2) and has a nozzle (12) at the outlet end (11). The nozzle (12) forms a channel widening portion (10a) at the exit end, and the widening portion is bounded by the supporting protrusions (⑶ and (η) on both sides). 0 —____ 9 This paper size applies Chinese national standards (C ^ S) A4 rules ^ each (210 X 297 mm) " ------------- install -------- order --------- (Please read the precautions on the back before filling this page) 487740 A7 __B7___ V. Description of the invention (y) According to Figure 3A and Figure 3b, the support element (9) can be placed at the entrance of the container (3) Area (15) (Figure 3A) or inside the container (3) itself (Figure 3B). Additional support elements (9) can also be used above the tank level surface (16) of the container (3). The support elements (9) are each embedded on a left side (lb) and a right side (lc) of the metal strip ⑴ with respect to the metal strip (1) to stabilize it. One additional effect is: The support element (9) operated by hydrostatic or hydrodynamic method can be coated with metal at the same time. Figures 4A and 4B show the arrangement of the support element in the container (3). Several supply channels (10) extending up and down in the horizontal direction in the container walls (3a) and (3b) There is a nozzle (12), the nozzle (12) has a channel widening portion (10a) from which the plated metal (2) comes up or down. At the supply of the plated metal (2) There is a conducting channel (17) between the channels (10), which leads the excess plated metal (2) to the molten metal pump or a storage chamber. The convex-concave liquid surface (Meniskus) generated by the electromagnetic drift field is used. ) Is shown in (19). Figure 4B shows the width of the metal strip (1) in the form of a steel strip, and shows the pull-out direction (18) from bottom to top. In addition, you can see the main line (20) Setting. The width of the supply channel (10) is also shown in Figure 4B. -------- 10 This paper size applies the Chinese National Standard (cns) a4 specification (21〇X 297 mm) ---- --------- ^ ----------------- line (please read the notes on the back before filling this page)