JPH07214161A - Manufacture of continuous coil - Google Patents

Abstract

PURPOSE:To provide a method for effectively manufacturing a continuous coil which is most suitably applied to a method for continuously taking out a band through the inside end or the outside end of mutually adjacent coils joined from an upper coil to a lower coil and can be piled up in order in the condition of extremely easily aligning rotating axes of the coils each other. CONSTITUTION:In the manufacturing method of the continuous coil, plural coils 1 of metallic bands P having different winding direction for each coil laid sideways are joined mutually on respective inside ends or respective outside ends of the adjacent coils to form the piled-up shape in order in the condition of aligning the rotary axes of the coils each other, after connecting the inside end of the preceding coil 1 to the inside end of the following coil 2 to be connected, the preceding coil 1 is rotated on the plane perpendicular to the rotating axis and the band P between both coils 1, 2 is coiled to mutually approach the coils 1, 2 and the newly connected coil 2 is piled on the preceding coil 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a continuous coil of a strip material, and in particular, the ends of the strip material in a plurality of coils are connected to each other so that a metal strip of any length can be continuously taken out. The present invention relates to a method for manufacturing a continuous coil for achieving the above.

[0002]

2. Description of the Related Art Generally, a metal strip is processed into a metal ingot having desired characteristics and thickness by repeatedly performing rolling and heat treatment. Further, various surface treatments may be performed, but finally, it is cut into a desired width by a slitter. Then, a coil of a metal strip is manufactured in which the strip width direction is parallel to the central axis of the coil and the slit edges are aligned. The wound metal strip is processed as a metal material by a surface treatment such as plating and painting, and a processing facility such as plastic working by pressing. Then, in the subsequent processing steps, it is indispensable to continuously unwind and take out the metal strip.
Therefore, the removal of this strip is an important step that affects the productivity and quality in the processing step of the metal strip.

Conventionally, as an uncoiler system for metal strips, a vertical uncoiler system, a horizontal product uncoiler system, and a traverse system have been typically implemented. The vertical uncoiler system is a method in which coils are set one by one on the uncoiler in a vertical manner like a reel of a projector, and the coils are rotated to take out the coil strip. With this method, after using one coil, the next coil must be set for each coil one by one, so the operator usually puts the coils that are laid sideways on a pallet (frame) in a vertical position one by one. It took a long time to set it, and the operating rate of processing equipment such as press machines was markedly low. Also, standing and setting a heavy coil from a horizontal position was dangerous. It is necessary to stop the work of the processing equipment for each coil and set the coil start end to the processing equipment after stopping its operation, which leads to a decrease in the operating rate of the processing equipment, and the length of one coil increases. It could not be processed in the processing equipment, and the product length was limited.

Further, in the horizontal stacking type uncoiler system, the coils stacked sideways on a pallet (frame) are placed on the turntable of the uncoiler together with the pallet, and the coil strips are placed outside (or inside) while rotating the turntable. This is a method of taking out one coil at a time from the top to the bottom. Unlike the vertical method, this method has greatly improved workability in that the coils stacked horizontally on the pallet can be installed directly on the turntable of the uncoiler for each pallet. However, the drawbacks of the vertical method still remain. That is, the processing equipment is stopped every time one coil is unwound and the starting end of the next coil is set in the device, or when the unwinding of one coil approaches the end, the end of the coil is moved to the next lower position. It was necessary to weld it to the beginning of the coil.

In the last traverse method, a slit strip is welded to form a long strip, which is continuously wound around a reel in a repetitive manner, for example, from the left end to the right end and from the right end to the left end. This is a method of unwinding one reel while rotating the reel. This method is advantageous in that it can handle continuous-length strips, but on the other hand, winding the strip around the reel is troublesome and time-consuming. Also, if the condition of winding the strip on the reel is not good, the strip will be displaced during transportation, the surface will be scratched, the strip cannot be taken out, and the edge of the strip wound on the strip surface will be inevitable. Since they are overlapped with each other, minute scratches are generated, so that they cannot be used in applications where the required characteristics of the surface are severe. As described above, each of the methods has many drawbacks in terms of workability, productivity, quality of metal strip, yield of strip (effective utilization rate), etc. It cannot be said that the performance required for the above is satisfied.

[0006]

Therefore, as a result of various studies in order to solve the above-mentioned drawbacks, the present inventors have developed a coil strip taking out method which is completely different from the conventional coil uncoiler method shown below. Japanese Examined Patent Publication 4-36766
The coil strip taking-out method disclosed in Japanese Patent Laid-Open Publication No. 9-242, as shown in the explanatory view shown in FIG. ... are placed on the turntable 8 of the uncoiler in a state where the inner ends of the adjacent coils or the outer ends of the adjacent coils are sequentially joined and stacked, and while the turntable 8 is rotated in one direction, the upper coil is removed from the upper coil. It is characterized in that the strip is continuously taken out via the inner end or the outer end of the adjacent coil joined to the lower coil in order. This coil strip take-out method has an effect that a continuous coil strip can be smoothly taken out without causing a step or a distortion in the joint portion and no interruption of the machining work is required. Therefore, recently, an efficient method for manufacturing a continuous coil (welding coil) suitable for this useful coil strip taking method has been desired.

The present invention has been made in view of the above circumstances, and continuously forms a strip from the upper coil to the lower coil through the inner ends or the outer ends of the adjacent coils joined to each other. It is an object of the present invention to provide an efficient manufacturing method of continuous coils which are the most suitable continuous coils to be used in the taking-out method, and which can be stacked in order with the rotation axes of the coils being matched very easily.

[0008]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention has a plurality of metal strip coils which are horizontally arranged and have different winding directions for each coil, and the inner ends of the adjacent coils are adjacent to each other. Alternatively, in the continuous coil manufacturing method in which the outer ends are joined to each other and the rotation axes of the coils are aligned with each other, the inner end of the previous coil and the inner end of the next coil are connected. After that, the above-mentioned coil is rotated on a plane perpendicular to the rotation axis so that the coils between the coils are wound and brought close to each other, and a newly connected coil is stacked on the above-mentioned coil. A method for manufacturing a continuous coil, which comprises connecting an outer end of a preceding coil and an outer end of a coil to be connected next, and then rotating the preceding coil on a plane perpendicular to a rotation axis to form a line between the coils. Winding up each other Is near a manufacturing method of a continuous coil characterized by stacking coils the newly connected on the destination of the coil.

Further, it is characterized in that a spacer protruding at least inside the inner circumference of the coil is interposed between the preceding coil and the coil to be stacked, and at least the outer circumference of the coil is provided between the preceding coil and the coil to be stacked. It is characterized by interposing a spacer protruding to the outside. After connecting the coil inner ends to be connected next to the previous coil and winding the strip between both coils so as to narrow the inner diameter of the coil so as to be smaller than the inner diameter, when stacking the connected coils, Characterized in that the coil is rotated in a direction opposite to the direction of rotation immediately before the coil, and the strip between the coils is wound inside the coils by utilizing the spring force of the narrowed strip itself. Also, connect the coil inner ends to be connected next to the previous coil, wind the line between both coils so as to narrow it down to the inner side of the previous coil so that it is smaller than the inner diameter, and then stack the connected coils. The coil is rotated in the direction opposite to the direction immediately before the coil, and the strip between the coils is wound inside the coils by utilizing the spring force of the narrowed strip itself. .

When the coil is rotated and the metal strip of the connecting portion between the two coils is wound inside or outside the coil, the metal strip is edged inside the coil by using a plurality of guide rollers. Are aligned and wound with a constant surface pressure so as not to deform, so that at least one guide roll has its axis positioned parallel to the rotation axis of the previous coil, and It is characterized in that it is pressed against the inner or outer surface of the coil to guide it so that the surface pressure between the wound coils is constant, and at least one guide roller is provided between the shaft and the edge surface of the coil. Is positioned within an angle of plus or minus 30 degrees, and guides the edges of the metal strips of both coils so as to be aligned with the edges of the preceding coils.

Furthermore, the invention is characterized in that a pair of guide rolls sandwiching a metal strip and having an axis parallel to the rotation axis of the preceding coil is used, and a coil to be connected next is stacked on the preceding coil. In this case, a cylindrical guide having the same axis as the center of both coils is used, and a marking agent which can be detected by an infrared sensor is applied to the connecting portion of the metal strips of both coils. Is characterized by.

[0012]

Next, the operation of the present invention will be described.
Infrared sensor is attached to the connecting part of the metal strips of both coils that are placed apart from each other by joining the inner ends or outer ends of adjacent coils of multiple metal strips with different winding directions for each coil. Apply a marking agent so that it can be detected by-. When joining the inner ends of adjacent coils of the metal strip coil, rotate the previous coil on a plane perpendicular to the rotation axis, and wind the metal strip at the connecting portion between the coils inside the coil. When connecting the coil inner ends to be connected next to the previous coil and winding the strip between both coils so as to narrow it down to the inner part of the coil so that it is smaller than the inner diameter, when stacking the connected coils , The coil is rotated in the direction opposite to the direction immediately before the previous coil, and the spring of the narrowed strip itself is used to lay the strip of the connecting portion between the two coils inside the coil. When connecting the outer end of the previous coil and the outer end of the coil to be connected next, rotate the previous coil on a plane perpendicular to the axis of rotation and wind the ridge between the two coils while winding them. Bring them closer together and stack the newly connected coil on top of the previous coil.

In this way, the coil to be connected next is gradually brought closer to the upper side of the previous coil which is rotating while winding the strip between both coils, and finally the new coil is connected onto the previous coil. Spacer with protruding coil inside and outside
The metal strips are supported and stacked so that they do not sag. Furthermore, during this final stacking work,
The axes of both coils are made to coincide with each other by using a pair of guide rolls having an axis parallel to the rotation axis of the coil to which the metal strip is sandwiched.

When the coils are stacked, a plurality of guide rolls are used to rotate the metal strip so that the edges of the metal strip are aligned with the inside of the coil and are wound with a constant surface pressure so as not to be deformed. The metal strip is pressed against the inner surface of the previous coil by at least one guide roll whose axis is positioned parallel to the rotation axis of the previous coil, and the surface pressure between the wound strips is guided to be constant, At the same time, the edges of the metal strips of both coils are aligned with the edges of the previous coil by at least one other guide roll whose angle between the rotation axis and the edge surface of the previous coil is within plus or minus 30 degrees. To guide you.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a method for manufacturing a continuous coil according to the present invention will be described with reference to the drawings. 1 to 6 are explanatory views of a manufacturing process for manufacturing a pair of welding coils,
When manufacturing a welding coil, it is important to properly superimpose them on each other in order to prevent the defective coil shape and the occurrence of scratches. That is, as shown in FIG. 1, coil 1 and coil 2
After connecting the inner ends of each other by a known connection method such as welding,
If necessary, the welded portion 9 is marked with paint or the like. This marking is made to clearly indicate the welded part that cannot be used as a processed product when the coil is taken out.
Further, this is also for automatically detecting the welded portion by an infrared sensor so that the welded portion 9 is not used as a processed product when the coil is taken out. Before and after this, the coil 2 to be stacked is wrapped with a ribbon 10 made of metal or plastic as needed to prevent the coil 2 from unraveling. In addition,
The binding of the coil 1 is bound as a pre-process of the coil 2, but is removed when stacking.

Next, as shown in FIG. 2, the guide device 11 of the strip P is attached to the coil 1. Although the guide device 11 will be described later, at least one guide roll A presses the strip P inside the coil 1, and the guide roll B adjusts the height of the edge of the strip P to guide the inner surface of the coil 1 with the guide roll A. It is adjusted so that the edges are aligned with the edge of the coil when pressed against. Next, as shown in FIG.
While the upper coil 1 is rotated in the winding direction, the guide device 11 winds the coil 1 along the inside of the coil 1. At the same time, as the strip P between the coils 1 and 2 is wound, the coil 2 is moved closer to the coil 1 by that amount. When the coil 2 is located on the coil 1 as in FIG. 4, the guide device 11 is removed and a suitable spacer 12 is inserted as shown in FIGS. 5 and 6 and then both coils 1, 2 are inserted. Are stacked via the spacer 12. By repeating this series of steps, it is possible to manufacture a welding coil in which a desired number of coils are connected.

FIG. 7 shows a guide device 11 composed of a plurality of guide rolls. In this guide device 11, at least one guide roll A presses the strip inside the coil 1, and the guide roll B adjusts the height of the edge of the strip so that when the guide roll A presses against the coil 1, the edge is It is adjusted so that the coil edges are aligned. The guide roll C is made up of a pair of rolls and has a function of standing the width direction of the strip. As a result, the functions of the guide rolls A and B can be fully fulfilled. However, although the guide rolls A, B, and C are shown here one by one or as a set, the number and installation position depend on the distance between the coils 1-2, the coil size, the strip size, the mechanical characteristics of the strip, and the like. Determine as appropriate. Further, whether or not the guide roll is driven, drive control, and the like may be appropriately performed depending on the distance between the coils 1-2, the coil size, the strip size, the mechanical characteristics of the strip, and the like. There is no particular limitation on the material of the roll, but it is relatively good to use a material such as rubber so as not to scratch the strip and to prevent slipping with the strip.

Further, the guide device 11 formed by a group of rolls shown in FIG. 7 has a coil 1 by an arm 11a.
Although the example in which the guide device is mounted from the upper surface to the inside of the coil has been described, the guide device is not limited to being mounted from the inside or the bottom of the coil 1. As for the spacer, an appropriate shape and size can be selected depending on the size of the coil or the strip so that the spacer does not become entangled during winding, transportation, and removal of the coil. Further, the guide roll rotates the coil 1 while bringing the coil 2 close to the coil 1, and when winding the metal strip of the connecting portion between both coils inside the coil 1, the metal strip has the edges aligned inside the coil and is deformed. It functions so as to be wound with a constant surface pressure so as not to do so, but the function is further assured by the combination of a plurality of guide rolls.

An example of concrete work is shown in FIGS. First, as shown in FIG. 8, after winding a strip, the coils 1 and 2 are brought close to each other, the coil 2 is positioned on the coil 1, and then the guide roll set 11 is detached and attached.
To bring the coil 2 closer to the core of the turntable 8
Is placed on it, and both coils are superposed on each other using the carriage 13. At this time, the strip between the coils is not fixed as shown in FIG.
And make the distance between the coils 2 as narrow as possible. At this time, the strip is wound smaller than the inner diameter of the coil 2.

Next, as shown in FIG. 10, the coil 2 is sucked up by about 10 mm by the air pad 15, etc., and then the carriage 13 is evacuated as shown in FIG. 11, and then the spacer 16 is placed on the coil 1. Then, while reversing the turntable 8 in the winding direction, the coil 2 sucked by the air pad 15 or the like is lowered and overlapped with the coil 1 as shown in FIG. At this time, by rotating the turntable 8 in the opposite direction to the winding direction, the strip wound smaller than the inner diameter elastically spreads out so as to completely follow the inner circumference of the coil 1 and the coil 2 which are stacked.

As described above, when the inner ends of the adjacent coils of the metal strip are joined, the coil 2 descends while rotating the coil in the winding direction (rotational direction).
Alternatively, when the coil 1 moves up to bring the two coils closer to each other, and the strip between the coils is wound around the inner side of the coil so as to be narrowed down to be smaller than the inner diameter, and when the connected coils are stacked, the coil immediately before the coil is immediately before the coil. The coil is rotated in the direction opposite to the rotating direction, and the spring between the narrowed strips is used to wind the strip between the coils inside the coils. Finally, the coil newly connected on the previous coil can be supported and stacked by a spacer protruding from the inner and outer circumferences thereof so that the metal strip of the coil does not hang down.

Further, when the outer ends of the coils are connected to each other, the preceding coil is rotated on a plane perpendicular to the axis of rotation so that the strips between the coils are wound and brought close to each other.
A newly connected coil is stacked on the above coil with a spacer interposed therebetween. In addition, at this time, in order to prevent the winding from being twisted and not being properly wound inside the coil, a cylindrical guide 14 is installed on the central axis of the coil. The guide 14 has a cylindrical shape, and its presence or absence is not limited. Finally, the carriage 13 is retracted and both coils are stacked, and the connecting portion of the strip P is completely along the outer circumference of the stacked coil 1 and coil 2.

The width of the metal strip P is 9 to 45 mm, the outer diameter of the coil alone is 500 to 1150 mm, and the inner diameter is 200 to 400 mm.
The continuous coil has 2 to 20 steps of right-handed winding and left-handed winding. In the above specific example, the coil 1 is set on the rotary table 8 so that the edge surface is horizontal, and the coil 2 is connected to the edge, but this is not against the gist of the present invention. Within the range, both coils may be implemented with the edge surfaces vertical, and the coil holding method is not particularly limited.

[0024]

According to the present invention described above, after connecting the former coil and the inner end comrades or outer end comrades of the coil to be connected next, the coils between the coils are made close to each other while being wound. , Because a newly connected coil is stacked on the preceding coil, a method for continuously taking out a strip from the upper coil to the lower coil through the inner end or outer end of the adjacent coils joined in sequence The most suitable continuous coil for use can be efficiently manufactured, and since the spacers protruding to the inside and outside of the coil are interposed, the metal strip does not sag during stacking work, and the metal strip is the first coil. Since the edges are aligned inside the coil, it is wound with a constant surface pressure so as not to deform, and it is possible to efficiently manufacture continuous coils that are stacked with the rotation axes of the coils aligned. There is no limit to the eliminates the interruption of the machining process, therefore improves the processing equipment utilization, moreover work in the processing equipment can now safely.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing a connection state of the present embodiment.

FIG. 2 is an explanatory view using the guide device of the present embodiment.

FIG. 3 is an explanatory diagram showing a winding state of the present embodiment.

FIG. 4 is an explanatory diagram showing a retracted state of the guide device according to the present embodiment.

FIG. 5 is an explanatory diagram showing a stacked state of the present embodiment.

FIG. 6 is an explanatory diagram showing a final state of stacking according to the present embodiment.

7A and 7B are explanatory views showing an operation state of the guide device of the present embodiment, FIG. 7A is a plan view, and FIG. 7B is a partial sectional side view.

FIG. 8 is an explanatory diagram showing one step of the coil stacking work of the present embodiment.

FIG. 9 is an explanatory diagram showing one step of the coil stacking work of the present embodiment.

FIG. 10 is an explanatory diagram showing a step of the coil stacking operation of the present embodiment.

FIG. 11 is an explanatory diagram showing a step of the coil stacking operation of the present embodiment.

FIG. 12 is an explanatory diagram showing one step of the coil stacking work of the present embodiment.

FIG. 13 is an explanatory diagram of a process of continuously taking out a strip.

[Explanation of symbols]

 1, 2 coils 7 Pallet 8 Turntable 9 Welded portion 10 Ribbon 11 Guide device 12 Spacer 13 Truck 14 Guide 15 Air pad A, B, C Guide roll P Metal strip

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[Procedure amendment]

[Submission date] May 11, 1994

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0009

[Correction method] Change

[Correction content]

Further, it is characterized in that a spacer protruding at least inside the inner circumference of the coil is interposed between the preceding coil and the coil to be stacked, and at least the outer circumference of the coil is provided between the preceding coil and the coil to be stacked. It is characterized by interposing a spacer protruding to the outside. After connecting the coil inner ends to be connected next to the previous coil and winding the strip between both coils so as to narrow the inner diameter of the coil so as to be smaller than the inner diameter, when stacking the connected coils, The coil is rotated in the direction opposite to the direction immediately before the coil and the strip between the coils is wound inside the coils by utilizing the spring force of the strip itself.

[Procedure Amendment 2]

[Document name to be amended] Statement

[Name of item to be corrected] 0015

[Correction method] Change

[Correction content]

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a method for manufacturing a continuous coil according to the present invention will be described with reference to the drawings. 1 to 6 are explanatory views of a manufacturing process for manufacturing a pair of welding coils,
When manufacturing a welding coil, it is important to properly superimpose them on each other in order to prevent the defective coil shape and the occurrence of scratches. That is, as shown in FIG. 1, coil 1 and coil 2
After connecting the inner ends of each other by a known connection method such as welding,
If necessary, the welded portion 9 is marked with paint or the like. This marking is made to clearly indicate the welded part that cannot be used as a processed product when the coil is taken out.
Further, this is also for automatically detecting the welded portion by an infrared sensor so that the welded portion 9 is not used as a processed product when the coil is taken out. Before and after this, the coil 2 to be stacked is wrapped with a ribbon 10 made of metal or plastic as needed to prevent the coil 2 from unraveling. In addition,
This bundling is temporary fixing and may be removed after the coils are stacked.

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 0019

[Correction method] Change

[Correction content]

An example of concrete work is shown in FIGS. First, as shown in FIG. 8, after winding a strip, the coils 1 and 2 are brought close to each other, the coil 2 is positioned on the coil 1, the guide roll set 11 is detached, and then the transfer machine 1
3 is moved closer to the core of the turntable 8 so that the coil 2 is placed thereon, and the two coils are stacked on each other using the transfer machine 13. At that time, a columnar guide 14 is installed on the central axis of the coil in order to prevent the strip from being twisted and not being properly wound inside the coil. The guide 14 has a cylindrical shape, and its presence or absence is not limited. At this time, since the strip between both coils is not fixed, as shown in FIG. 9, the turntable 8 rotates while rotating in the winding direction, and the coil 1 and the coil 2 rise.
Make the distance as small as possible. At this time, the strip is wound smaller than the inner diameter of the coil 2.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0020

[Correction method] Change

[Correction content]

Next, as shown in FIG. 10, the coil 2 is sucked up by about 10 mm by the air pad 15 or the like, and then, as shown in FIG.
As described above, the transfer machine 13 is retracted, and then the spacer 16 is placed on the coil 1. Then, while rotating the turntable 8 in the opposite direction to the winding direction, as shown in FIG.
Coil 1 which is sucked by the coil 1 is moved down.
On top of. At this time, by rotating the turntable 8 in the opposite direction to the winding direction, the strip wound smaller than the inner diameter elastically spreads out so as to completely follow the inner circumference of the coil 1 and the coil 2 which are stacked. However, the use of the transfer machine 13 is not an essential requirement in the present invention, and the coil 2 may be stacked on the coil 1 only by an air pad or the like.

[Procedure Amendment 5]

[Document name to be amended] Statement

[Name of item to be corrected] 0022

[Correction method] Change

[Correction content]

Further, when the outer ends of the coils are connected to each other, the preceding coil is rotated on a plane perpendicular to the axis of rotation so that the strips between the coils are wound and brought close to each other.
A newly connected coil is stacked on the above coil with a spacer interposed therebetween. Finally, the transfer machine 13 is retracted and both coils are stacked, and the connecting portion of the strip P is completely along the outer circumference of the coil 1 and the coil 2 that are stacked.

[Procedure correction 6]

[Document name to be amended] Statement

[Correction target item name] Explanation of code

[Correction method] Change

[Correction content]

[Explanation of Codes] 1, 2 Coil 7 Pallet 8 Turntable 9 Welded portion 10 Ribbon 11 Guide device 12 Spacer 13 Transfer machine 14 Guide 15 Air pads A, B, C Guide roll P Metal strip

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Shinji Hasumi Shinji Kurami-cho, Samukawa-cho, Takaza-gun, Kanagawa Pref.Kurami Plant Co., Ltd. Kurami Factory Co., Ltd.

Claims (11)

[Claims] 1. A plurality of metal strip coils, which are placed horizontally and have different winding directions for each coil, are joined to each other by joining inner ends or outer ends of adjacent coils and aligning rotation axes of the coils. In the method for producing a continuous coil in a stacked state in the above state, after connecting the inner end of the previous coil and the inner end of the coil to be connected next, the previous coil is rotated on a plane perpendicular to the rotation axis. Then, a continuous coil manufacturing method is characterized in that the coil between the two coils is wound and brought close to each other, and the newly connected coil is stacked on the preceding coil. 2. A plurality of metal strip coils, which are placed horizontally and have different winding directions for each coil, are joined to each other by joining the inner ends or the outer ends of adjacent coils, and aligning the rotation axes of the coils. In the method for producing a continuous coil in a stacked state in the above state, after connecting the outer end of the previous coil and the outer end of the coil to be connected next, the previous coil is rotated on a plane perpendicular to the rotation axis. Then, a continuous coil manufacturing method is characterized in that the coil between the two coils is wound and brought close to each other, and the newly connected coil is stacked on the preceding coil. 3. The method for producing a continuous coil according to claim 1, wherein a spacer protruding at least inside the inner circumference of the coil is interposed between the coil and the coil to be stacked. 4. The method for manufacturing a continuous coil according to claim 2, wherein a spacer protruding at least outside the outer circumference of the coil is interposed between the coil and the coil to be stacked. 5. A coil inner end to be connected next is connected to the previous coil, and a strip between the coils is wound around the inner part of the previous coil so as to be narrower than the inner diameter, and then the connected coils are stacked. At this time, the coil is rotated in a direction opposite to the direction of rotation immediately before the previous coil, and the strip between the coils is wound inside the coils by utilizing the spring force of the strip itself. The method for producing a continuous coil according to claim 1, wherein the continuous coil is manufactured. 6. When the above coil is rotated and the metal strip of the connecting portion between the two coils is wound inside or outside thereof, the metal strip is placed inside or outside the previous coil by using a plurality of guide rolls. The continuous coil manufacturing method according to any one of claims 1 to 4, wherein the winding is performed with a constant surface pressure so that the edges are aligned and are not deformed. 7. At least one guide roll is positioned such that its axis is parallel to the rotation axis of the previous coil, and a metal strip is pressed against the inner or outer surface of the previous coil so that the surface pressure between the wound strips is reduced. The method for producing a continuous coil according to claim 6, wherein the guide is performed so as to be constant. 8. At least one guide roll is positioned within an angle of ± 30 degrees between the axis of the guide roll and the edge surface of the previous coil, and the edges of the metal strips of both coils are the edges of the previous coil. The method for producing a continuous coil according to claim 5, wherein the guide is performed so as to be aligned with. 9. A continuous coil according to claim 6, wherein a pair of guide rollers sandwiching a metal strip and having an axis parallel to the rotation axis of the preceding coil is used. Production method. 10. When stacking a coil to be connected next on the previous coil, a cylindrical guide having the same axis as the center of both coils is used. A method for manufacturing the continuous coil described above. 11. A marking agent, which can be detected by an infrared sensor, is applied to a connecting portion of the metal strips of both coils, which is characterized in that.
The method for producing a continuous coil according to.