1301080 九、發明說明： 【發明所屬之技術領域】 本發明係關於一種金屬板材之連續製造方法及設備，詳 言之，係關於一種利用軋延法之金屬板材之連續製造方法 及設備。 【先前技術】 參考圖1，顯示習知金屬板材之連續製造設備之示意 圖。該習知連續製造設備1包括一解捲機11、一焊接襞置 12、一積料器13、一主要處理裝置14及一收捲裝置15。該 解捲機11係用以解捲一金屬捲16(例如一鋼捲）。該主要處 理裝置14係用以處理通過其内之金屬捲16之金屬，該處理 之方法係冷軋、酸洗、退火、鍍鋅、烤漆、精整、調質、 整平、衝壓或輥輪成形。該收捲裝置15係用以持續收捲通 過該主要處理裝置14之金屬捲16之金屬。 當該解捲機11完全解捲該金屬捲16時，由於該主要處理 裝置14及該收捲裝置15必須持續運轉，因此需要將另一金 屬捲16套設於該解捲機π上且將其前端連接於上一個金屬 捲16之後端，以使產線不間斷。該習知連續製造設備1之 連接二個金屬捲16之方式如下，首先將二個金屬捲16之端 部對接’之後再利用該焊接裝置丨2將該二個金屬捲丨6之端 部焊接。 該知接裝置12焊接該二個金屬捲丨6之端部所花費之時間 大約20至30秒，在這段時間中，該主要處理裝置14及該收 捲裝置15仍持續運轉，因此需要該積料器13來作積料之動 114384.doc I3〇l〇80 作。该積料器13包括複數個滾筒131，該等滾筒131係可上 下移動，以調整該金屬捲16在該積料器13内之總長度，而 達到積料之目的。 該習知連續製造設備丨之缺點如下，·第一，該二個金屬 捲16之端部在對準時之準確度之要求十分高，亦即該二個 金屬捲16之端部必須對得很準，否則會影響接續之製程， 但是要達到對準之高準確度會增加製造成本。第二，該二 個金屬捲16之端部在焊接後會留下一突出之焊道“I，如 圖2所示，因此必須再增加一個剷平該焊道161之裝置。第 二，該積料器13不僅昂貴而且佔據很大空間。 士因此，有必要提供一種創新且具進步性的金屬板材之連 、、貝製k方法及設備’以解決上述問題。 【發明内容】 本毛明之主要目的在於提供一種金屬板材之連續製造方 法’包括以下步驟··⑷提供一第一金屬捲，該第一金屬捲 具有第一端及一第二端；（b)持續帶動該第一金屬捲之第 -端向前移動；⑷提供_第二金屬捲，該第二金屬捲具有 -第-端及-第二端；及⑷搭接且軋延該第二金屬捲之第 :端與該第-金屬捲之第二端，使得該第二金屬捲接著該 第一金屬捲之後向前移動。 本發明之另-目的在於提供一種金屬板材之連續製造設 備，包括一第一解捲機、一第二解捲機、一軋延裝置及一 輪达裝置。該第一解捲機係用以解捲一第一金屬捲。該第 二解捲機制以解捲-第二金屬捲。該軋延裝置係用以軋 114384.doc 1301080 延該第一金屬捲之一端及該第二金屬捲之一端。該輸送裝 置係用以持續帶動該第一金屬捲及接於該第一金屬捲之該 弟一金屬捲。 藉此’ 5亥弟一金屬捲之該第一端及該第一金屬捲之該第 一 ^間係為搭接，因此不需要該習知連續製造設備中對準 ¥之咼準確度之要求。此外，該軋延處之上下表面皆為平 整之面，因此不需要該習知連續製造設備中剷平該焊道之 裝置。再者，本發明在軋延時只會延誤3秒鐘以内，因此 只需小的積料器即可，因而可減少生產線所佔用之空間且 可節省設備成本。 【實施方式】 參考圖3,顯示本發明之金屬板材之連續製造設備之示 意圖。該連續製造設備3包括一第一解捲機31、一第二解 捲機32、一前處理裝置33、一軋延裝置34、一後處理裝置 35、一主要處理裝置36、一輸送裝置（例如複數個滾輪41) 及一收捲裝置37。該第一解捲機31係用以解捲一第一金屬 捲38，該第一金屬捲38具有一第一端（前端）及一第二端 381 (後端）。解捲後之該第一金屬捲38係成平板狀，且經由 該輸送裝置帶動而進入該主要處理裝置36。該主要處理裝 置36係用以處理通過其内之該第一金屬捲38之金屬，該處 理之方法係為冷軋、酸洗、退火、鍍鋅、烤漆、精整、調 質、整平、衝壓或輥輪成形。 之後，通過該主要處理裝置36之該第一金屬捲38之金屬 則可以被該收捲裝置37收捲或是直接再加工（例如衝剪）。 114384.doc 1301080 在本實施例中’該第一金屬捲38之第一端係被該收捲裝置 37收捲。 该第二解捲機32係用以解捲一第二金屬捲39,該第二金 屬捲39具有一第一端39丨（前端）及一第二端（後端）。解捲後 之该第二金屬捲39係成平板狀，且經由該輸送裝置帶動。 該第二金屬捲39及該第一金屬捲38之材質可以相同或是不 相同。當該第一解捲機31完全解捲該第一金屬捲38時，由 於該主要處理裝置36及該收捲裝置37必須持續運轉，因此 需要將該第二金屬捲39套設於該第二解捲機32上開始解捲 且將其第一端391連接於該第一金屬捲38之第二端381，以 使產線不間斷。 該前處理裝置33係用以前處理該第二金屬捲39之該第一 端391及該第一金屬捲38之該第二端38ι。在本實施例中， 該前處理裝置33包括一表面處理裝置（圖中未示），該表面 處理裝置33係對欲接合面進行表面處理。該欲接合面包括 該第二金屬捲39之該第一端391之下表面及該第一金屬捲 38之該第二端381之上表面。該表面處理係為機械拋光、 機械喷砂、壓印、電漿喷出或是其組合，其目的係為去除 該欲接合面之氧化層或是油膜，以裸露該第二金屬捲39之 該第一端391之下表面及該第一金屬捲38之該第二端381之 上表面之金屬本體，藉以形成軋延接合效果。舉例而言， 如果該第二金屬捲39及該第一金屬捲38之材質皆為鋼，則 需先機械抛光後再機械嗔砂；如果該第二金屬捲39或該第 一金屬捲38之材質為鋁，則只需機械拋光即可，而不需機 114384.doc -9- !3〇1〇8〇 械噴砂。 在其他應用中’該鈿處理裝置33另包括一加熱裝置（圖 中未示）’用以加熱該弟一金屬捲39之該第一端391及該第 —金屬捲38之該第二端381。 請同時參考圖4，顯示本發明之金屬板材之連續製造設 備之軋延裝置之示意圖。該軋延裝置34係用以軋延該第一 金屬捲38之該第二端381及該第二金屬捲μ之該第一端 391。在本實施例中，該軋延裝置34包括二滾筒34ι，當該 弟一金屬捲39之該第一端391搭接於該第一金屬捲％之該 第一端381上後，該等滾筒341接觸且軋延該第二金屬捲39 之該第一端391及該第一金屬捲38之該第二端381，以形成 一礼延處4 0 (圖5)。 請再參考圖3，該後處理裝置35係用以後處理該第二金 屬捲39之該第一端391及該第一金屬捲38之該第二端381間 之該軋延處40。在本實施例中，該後處理裝置35包括一去 除裝置（圖中未示），用以去除該軋延處4〇之側邊突出部 份。在其他應用中，該後處理裝置35另包括一標記裝置 (圖中未示），用以形成一標記於該軋延處4〇。 之後’該輸送裝置持續帶動該第一金屬捲38及接於該第 一金屬捲38之該第二金屬捲39進入該主要處理裝置36。此 時’該主要處理裝置36處理通過其内之該第二金屬捲39之 金屬。同樣地’該處理之方法係為冷軋、酸洗、退火、鍍 鋅、烤漆、精整、調質、整平、衝壓或輥輪成形。 之後’通過該主要處理裝置36之該第二金屬捲39之金屬 114384.doc -10- 1301080 則可以被該收捲裝置37收捲或是直接再加工（例如衝剪）。 纟本實施例中，該第二金屬捲39接著該第一金屬捲38被該 收捲裝置37持續收捲。 可以理解的是，當㈣二解捲機32完全解捲該第二金厲 捲39時，如果需要的話’可以將另一金屬捲套設於該第一 解捲機31上開始解捲且將其前端連接於該第二金屬捲”之 第二端，以使產線不間斷。 _ 本發明之優點為，第一，該第二金屬捲”之該第一端 391及該第一金屬捲38之該第二端381間係為搭接，因此不 而要該習知連續製造設備1中對準時之高準確度之要求。 第二，該軋延處40之上下表面皆為平整之面，因此不需要 該習知連續製造設備1中剷平該焊道161之裝置。第三，本 發明在軋延時只會延誤3秒鐘以内，因此只需小的積料器 即可’因而可減少生產線所佔用之空間且可節省設備成 ° 籲 參考圖6，顯示本發明之金屬板材之連續製造方法之流 程圖。睛同時參考圖3，本發明之金屬板材之連續製造方 法包括以下步驟。步驟S601係提供一第一金屬捲38，該第 一金屬捲38具有一第一端及一第二端38ι。步驟S6〇2係主 . 要處理該第一金屬捲38，該主要處理之方法係為冷軋、酸 . 洗、退火、鍍鋅、烤漆、精整、調質、整平、衝壓或輥輪 成形。步驟S603係持續帶動該第一金屬捲38之第一端向前 移動’以持續收捲該第一金屬捲38之第一端或是直接再加 工（例如衝剪）該第一金屬捲38。在本實施例中，該第一金 114384.doc -11- 13〇1〇80 屬捲38之第一端係持續被該收捲裝置37收捲。 步驟S604提供一第二金屬捲39 ,該第二金屬捲39具有一 第一端391及一第二端。 步驟S605係前處理該第二金屬捲39之第一端391及該第 一金屬捲38之第二端381之欲接合面。該欲接合面包括該 第二金屬捲39之該第一端391之下表面及該第一金屬捲38 之該第二端381之上表面。在本實施例中，該表面處理係 為機械拋光、機械喷砂、壓印、電漿喷出或是其組合，其 目的係為去除該欲接合面之氧化層或是油膜，以裸露該第 二金屬捲39之該第一端39丨之下表面及該第一金屬捲38之 遠第二端381之上表面之金屬本體，藉以提高接合效果。 舉例而言，如果該第二金屬捲39及該第一金屬捲38之材質 皆為鋼，則需先機械拋光後再機械喷砂；如果該第二金屬 捲39或該第一金屬捲38之材質為鋁，則只需機械拋光即 可’而不需機械噴砂。在其他應用中，該前處理步驟係為 一加熱之步驟，以加熱該第二金屬捲39之第一端391及該 第一金屬捲38之第二端381。 步驟S606係搭接且軋延該第二金屬捲39之第一端391與 該第一金屬捲38之第二端381，而形成一軋延處4〇,且使 得該第二金屬捲39接著該第一金屬捲38之後向前移動。 步驟S607係後處理該第二金屬捲39之第一端391及該第 一金屬捲38之第二端381間之該軋延處4〇。在本實施例 中’該後處理步驟係去除該軋延處4〇之側邊突出部份。在 其他應用中，該後處理步驟係形成一標記於該軋延處4〇。 114384.doc -12 - 1301080 步驟S608係主要處理該第二金屬捲39。當該第一金屬捲 3 8被主要處理完成後，接著就換連接於該第一金屬捲％之 該第一金屬捲39被主要處理。同樣地，該主要處理之方法 係為冷軋、酸洗、退火、鍍辞、烤漆、精整、調質、整 ' 平、衝壓或輥輪成形。 之後，該第二金屬捲39之金屬可以被收捲或是直接再加 工（例如衝剪）。在本實施例中，該第二金屬捲39接著該第 瞻 一金屬捲38被持續收捲。可以理解的是，當該第二金屬捲 39完全解捲時，如果需要的話，可以再解捲另一金屬捲且 將其前端連接於該第二金屬捲39之第二端，以使產線不間 斷。 惟上述實施例僅為說明本發明之原理及其功效，而非用 以限制本發明。因此，習於此技術之人士可在不違背本發 明之精神對上述實施例進行修改及變化。本發明之權利範 圍應如後述之申請專利範圍所列。 • 【圖式簡單說明】 圖1顯示習知金屬板材之連續製造設備之示意圖； 圖2顯示習知連接方式在焊接後留下之焊道之示意圖； 圖3顯示本發明之金屬板材之連續製造設備之示意圖； • 圖4顯示本發明之金屬板材之連續製造設備之軋延裝置 ^ 之示意圖； 圖5顯示本發明連接方式在軋延後之軋延處；及 圖6顯示本發明之金屬板材之連續製造方法之流程圖。 【主要元件符號說明】 114384.doc -13- 1301080 1 習知連續製造設備 3 本發明之連續製造設備 11 解捲機 12 焊接裝置 13 積料器 14 主要處理裝置 15 收捲裝置 16 金屬捲 31 第一解捲機 32 第二解捲機 33 前處理裝置 34 軋延裝置 35 後處理裝置 36 主要處理裝置 37 收捲裝置 38 第一金屬捲 39 第二金屬捲 40 軋延處 41 滾輪 131 滾筒 161 焊道 341 滾筒 381 第一金屬捲之第二端 391 第二金屬捲之第一端 114384.doc • 14.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a continuous manufacturing method and apparatus for sheet metal, and more particularly to a continuous manufacturing method and apparatus for sheet metal using a rolling method. [Prior Art] Referring to Fig. 1, there is shown a schematic view of a continuous manufacturing apparatus of a conventional metal sheet. The conventional continuous manufacturing apparatus 1 includes an unwinding machine 11, a welding device 12, a stocker 13, a main processing device 14, and a winding device 15. The unwinder 11 is used to unwind a metal roll 16 (e.g., a steel coil). The primary processing device 14 is for processing metal through the metal coil 16 therein, which is cold rolled, pickled, annealed, galvanized, painted, finished, tempered, leveled, stamped or rolled. Forming. The winding device 15 is for continuously winding the metal of the metal coil 16 passing through the main processing device 14. When the unwinder 11 completely unwinds the metal roll 16, since the main processing device 14 and the winding device 15 must continue to operate, it is necessary to sleeve another metal roll 16 on the unwinder π and The front end is connected to the rear end of the previous metal coil 16 so that the production line is uninterrupted. The method of connecting the two metal coils 16 of the conventional continuous manufacturing apparatus 1 is as follows. First, the ends of the two metal coils 16 are butted together, and then the ends of the two metal coils 6 are welded by the welding device 丨2. . The time taken for the splicing device 12 to weld the ends of the two metal coils 6 is about 20 to 30 seconds. During this time, the main processing device 14 and the winding device 15 continue to operate, so this is required. Accumulator 13 is used to make the accumulation of 114384.doc I3〇l〇80. The hopper 13 includes a plurality of rollers 131 which are movable up and down to adjust the total length of the metal coil 16 in the hopper 13 for the purpose of material accumulation. The disadvantages of the conventional continuous manufacturing apparatus are as follows: First, the accuracy of the alignment of the ends of the two metal coils 16 is very high, that is, the ends of the two metal coils 16 must be very close. Precise, otherwise it will affect the process of the continuation, but to achieve high accuracy of alignment will increase manufacturing costs. Second, the ends of the two metal coils 16 will leave a protruding bead "I" after welding, as shown in Fig. 2, so a device for leveling the bead 161 must be added. Second, the The accumulator 13 is not only expensive but also takes up a lot of space. Therefore, it is necessary to provide an innovative and progressive metal sheet connection, a shelling method and equipment to solve the above problems. [Summary of the Invention] The main object of the present invention is to provide a method for continuously manufacturing a metal sheet comprising the following steps: (4) providing a first metal coil having a first end and a second end; (b) continuously driving the first metal coil The first end moves forward; (4) provides a second metal coil having a - first end and a second end; and (4) overlapping and rolling the second end of the second metal coil The second end of the first metal coil causes the second metal coil to move forward after the first metal coil. Another object of the present invention is to provide a continuous manufacturing apparatus for sheet metal, comprising a first unwinding machine, a second unwinding machine, a rolling device and a round The first unwinding machine is used to unwind a first metal roll. The second unwinding mechanism is to unwind the second metal roll. The rolling device is used to roll 114384.doc 1301080 One end of a metal coil and one end of the second metal coil. The conveying device is configured to continuously drive the first metal coil and the metal coil attached to the first metal coil. The first end of the roll and the first end of the first metal roll are overlapped, so that the accuracy of the alignment of the conventional continuous manufacturing equipment is not required. In addition, the rolling position is The upper and lower surfaces are flat surfaces, so that the device for leveling the weld bead in the conventional continuous manufacturing equipment is not required. Furthermore, the rolling delay of the present invention is only delayed within 3 seconds, so that only a small accumulator is required. That is, the space occupied by the production line can be reduced and the equipment cost can be saved. [Embodiment] Referring to Figure 3, there is shown a schematic view of a continuous manufacturing apparatus for a metal sheet according to the present invention. The continuous manufacturing apparatus 3 includes a first unwinding machine. 31. A second unwinding machine 32 and a pre-processing device 33. A rolling device 34, a post-processing device 35, a main processing device 36, a conveying device (for example, a plurality of rollers 41) and a winding device 37. The first unwinding machine 31 is used for unwinding one a first metal coil 38 having a first end (front end) and a second end 381 (rear end). The unwound first metal coil 38 is formed into a flat shape and is transported therethrough. The apparatus is driven to enter the main processing unit 36. The main processing unit 36 is for processing the metal of the first metal coil 38 passing therethrough, and the processing method is cold rolling, pickling, annealing, galvanizing, baking paint. Finishing, tempering, leveling, stamping or roller forming. Thereafter, the metal of the first metal coil 38 passing through the primary processing device 36 can be wound by the winding device 37 or directly reworked (eg Punching). 114384.doc 1301080 In the present embodiment, the first end of the first metal coil 38 is wound by the winding device 37. The second unwinder 32 is for unwinding a second metal roll 39 having a first end 39丨 (front end) and a second end (rear end). The unwound second metal roll 39 is formed in a flat shape and is driven by the transport device. The materials of the second metal coil 39 and the first metal coil 38 may be the same or different. When the first unwinder 31 completely unwinds the first metal coil 38, since the main processing device 36 and the winding device 37 must continue to operate, the second metal coil 39 needs to be sleeved on the second The unwinding machine 32 begins unwinding and connects its first end 391 to the second end 381 of the first metal coil 38 to keep the line uninterrupted. The pretreatment device 33 previously processes the first end 391 of the second metal coil 39 and the second end 38ι of the first metal coil 38. In the present embodiment, the pretreatment device 33 includes a surface treatment device (not shown) which performs surface treatment on the surface to be joined. The surface to be joined includes a lower surface of the first end 391 of the second metal coil 39 and an upper surface of the second end 381 of the first metal coil 38. The surface treatment is mechanical polishing, mechanical blasting, embossing, plasma spraying or a combination thereof, the purpose of which is to remove the oxide layer or the oil film of the surface to be exposed to expose the second metal coil 39. The lower surface of the first end 391 and the metal body of the upper surface of the second end 381 of the first metal coil 38 are used to form a rolling joint effect. For example, if the second metal coil 39 and the first metal coil 38 are made of steel, mechanical polishing is required before mechanical sanding; if the second metal coil 39 or the first metal coil 38 is The material is aluminum, just mechanical polishing, without the need for machine 114384.doc -9- !3〇1〇8 mechanical sandblasting. In other applications, the processing device 33 further includes a heating device (not shown) for heating the first end 391 of the first metal coil 39 and the second end 381 of the first metal coil 38. . Referring to Figure 4, there is shown a schematic view of a rolling apparatus for a continuous manufacturing apparatus for sheet metal of the present invention. The rolling device 34 is used to roll the second end 381 of the first metal coil 38 and the first end 391 of the second metal coil μ. In this embodiment, the rolling device 34 includes two rollers 341. When the first end 391 of the first metal coil 39 is overlapped on the first end 381 of the first metal coil, the rollers The first end 391 of the second metal coil 39 and the second end 381 of the first metal coil 38 are contacted and rolled to form a courtesy 40 (FIG. 5). Referring again to FIG. 3, the post-processing device 35 is used to process the roll end 40 between the first end 391 of the second metal roll 39 and the second end 381 of the first metal roll 38. In the present embodiment, the post-processing device 35 includes a removal device (not shown) for removing the side projections of the roll. In other applications, the post-processing device 35 further includes a marking device (not shown) for forming a mark on the roll. Thereafter, the transport device continues to drive the first metal coil 38 and the second metal coil 39 attached to the first metal coil 38 into the primary processing device 36. At this point, the primary processing device 36 processes the metal passing through the second metal coil 39 therein. Similarly, the method of treatment is cold rolling, pickling, annealing, galvanizing, baking, finishing, conditioning, leveling, stamping or roll forming. The metal 114384.doc -10- 1301080 of the second metal coil 39 passing through the primary processing device 36 can then be wound up by the winding device 37 or directly reworked (e.g., punched). In the present embodiment, the second metal coil 39 is then continuously wound by the winding device 37 by the first metal coil 38. It can be understood that when the (four) two unwinding machine 32 completely unwinds the second gold coil 39, if necessary, another metal coil can be sleeved on the first unwinding machine 31 to start unwinding and The front end is connected to the second end of the second metal coil to make the production line uninterrupted. _ The advantage of the invention is that the first end 391 of the first metal coil and the first metal coil The second end 381 of the 38 is overlapped, so that the high accuracy of alignment in the conventional manufacturing apparatus 1 is not required. Second, the lower surface of the rolling section 40 is a flat surface, so that the apparatus for leveling the bead 161 in the conventional continuous manufacturing apparatus 1 is not required. Thirdly, the present invention can only delay the rolling delay within 3 seconds, so that only a small accumulator can be used, thus reducing the space occupied by the production line and saving equipment. Referring to Figure 6, the present invention is shown. Flow chart of a continuous manufacturing method of metal sheets. Referring to Fig. 3 simultaneously, the continuous manufacturing method of the metal sheet of the present invention comprises the following steps. Step S601 provides a first metal coil 38 having a first end and a second end 38ι. Step S6〇2 is the main. To process the first metal coil 38, the main processing method is cold rolling, acid washing, annealing, galvanizing, baking, finishing, quenching, leveling, stamping or roller Forming. Step S603 is to continue to move the first end of the first metal coil 38 forward to continuously wind up the first end of the first metal coil 38 or directly rework (for example, punch) the first metal coil 38. In the present embodiment, the first end of the first gold 114384.doc -11-13 〇1 〇 80 genus 38 is continuously wound by the winding device 37. Step S604 provides a second metal coil 39 having a first end 391 and a second end. Step S605 pre-processes the joint surface of the first end 391 of the second metal coil 39 and the second end 381 of the first metal coil 38. The surface to be joined includes a lower surface of the first end 391 of the second metal coil 39 and an upper surface of the second end 381 of the first metal coil 38. In this embodiment, the surface treatment is mechanical polishing, mechanical blasting, embossing, plasma spraying, or a combination thereof, the purpose of which is to remove the oxide layer or the oil film of the surface to be exposed to expose the first The metal body of the lower surface of the first end 39 of the second metal coil 39 and the upper surface of the second end 381 of the first metal coil 38 is used to improve the bonding effect. For example, if the second metal coil 39 and the first metal coil 38 are made of steel, mechanical polishing is required before mechanical blasting; if the second metal coil 39 or the first metal coil 38 is Made of aluminum, it can be mechanically polished without mechanical blasting. In other applications, the pre-processing step is a heating step to heat the first end 391 of the second metal coil 39 and the second end 381 of the first metal coil 38. Step S606 is to lap and roll the first end 391 of the second metal coil 39 and the second end 381 of the first metal coil 38 to form a rolling point 4〇, and the second metal coil 39 is then The first metal coil 38 is then moved forward. Step S607 is to post-treat the rolling gap between the first end 391 of the second metal coil 39 and the second end 381 of the first metal coil 38. In the present embodiment, the post-processing step removes the side projections of the rolled portion. In other applications, the post-processing step forms a mark on the roll. 114384.doc -12 - 1301080 Step S608 is mainly to process the second metal coil 39. After the first metal coil 38 is primarily processed, the first metal coil 39, which is subsequently connected to the first metal coil, is primarily processed. Similarly, the primary treatment method is cold rolling, pickling, annealing, plating, baking, finishing, conditioning, flattening, stamping or roll forming. Thereafter, the metal of the second metal coil 39 can be wound up or directly processed (e.g., punched). In the present embodiment, the second metal coil 39 is then continuously wound up by the first metal coil 38. It can be understood that when the second metal coil 39 is completely unwound, if necessary, another metal coil can be unwound and its front end is connected to the second end of the second metal coil 39 to make the production line. Uninterrupted. However, the above-described embodiments are merely illustrative of the principles of the invention and its effects, and are not intended to limit the invention. Therefore, those skilled in the art can make modifications and changes to the above embodiments without departing from the spirit of the invention. The scope of the invention should be as set forth in the appended claims. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic view showing a continuous manufacturing apparatus of a conventional metal sheet; Fig. 2 is a view showing a conventionally connected manner of a bead remaining after welding; and Fig. 3 is a view showing continuous manufacturing of the metal sheet of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS: Fig. 4 is a schematic view showing a rolling apparatus of a continuous manufacturing apparatus for a metal sheet of the present invention; Fig. 5 is a view showing a joining method of the present invention at a rolling stand after rolling; and Fig. 6 is a metal sheet of the present invention. A flow chart of a continuous manufacturing method. [Description of main component symbols] 114384.doc -13- 1301080 1 Conventional continuous manufacturing equipment 3 Continuous manufacturing apparatus 11 of the present invention Unwinding machine 12 Welding apparatus 13 Accumulator 14 Main processing apparatus 15 Winding device 16 Metal coil 31 A winder 32 second unwinder 33 pre-processing device 34 rolling device 35 post-processing device 36 main processing device 37 winding device 38 first metal coil 39 second metal coil 40 rolling station 41 roller 131 roller 161 welding Lane 341 drum 381 second end of the first metal coil 391 first end of the second metal coil 114384.doc • 14.