WO2018062375A1 - 金属条コイルおよびその製造方法 - Google Patents
金属条コイルおよびその製造方法 Download PDFInfo
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- WO2018062375A1 WO2018062375A1 PCT/JP2017/035185 JP2017035185W WO2018062375A1 WO 2018062375 A1 WO2018062375 A1 WO 2018062375A1 JP 2017035185 W JP2017035185 W JP 2017035185W WO 2018062375 A1 WO2018062375 A1 WO 2018062375A1
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- metal strip
- angle
- winding
- coil
- arc
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
- B21C47/02—Winding-up or coiling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
- B21C47/02—Winding-up or coiling
- B21C47/04—Winding-up or coiling on or in reels or drums, without using a moving guide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
- B21C47/34—Feeding or guiding devices not specially adapted to a particular type of apparatus
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H45/00—Folding thin material
- B65H45/02—Folding limp material without application of pressure to define or form crease lines
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H45/00—Folding thin material
- B65H45/12—Folding articles or webs with application of pressure to define or form crease lines
- B65H45/28—Folding in combination with cutting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H54/00—Winding, coiling, or depositing filamentary material
- B65H54/02—Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H54/00—Winding, coiling, or depositing filamentary material
- B65H54/02—Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers
- B65H54/28—Traversing devices; Package-shaping arrangements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H54/00—Winding, coiling, or depositing filamentary material
- B65H54/02—Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers
- B65H54/28—Traversing devices; Package-shaping arrangements
- B65H54/2848—Arrangements for aligned winding
- B65H54/2854—Detection or control of aligned winding or reversal
- B65H54/2857—Reversal control
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H55/00—Wound packages of filamentary material
- B65H55/04—Wound packages of filamentary material characterised by method of winding
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/30—Handled filamentary material
- B65H2701/37—Tapes
Definitions
- the present invention relates to a metal strip coil composed of a metal strip wound around a winding core and a manufacturing method thereof.
- the steel strip that has finished the cold rolling process becomes a metal strip through a slitting slit process that cuts to a desired width, becomes a metal strip coil wound around a reel, and is supplied to the next process.
- a metal strip coil about the shape of this metal strip coil, after pancake coil made by winding up into a disk shape with the same width dimension as the metal strip and welding a plurality of metal strips of predetermined dimensions into one long metal strip
- an oscillating coil also referred to as spiral winding, spiral winding, traverse winding, or twill winding
- the oscillating coil has the advantage of improving productivity by reducing the number of coil replacements in the next process because it can wind up the metal strip longer than one coil compared to the pancake coil.
- Patent Document 1 describes a method of winding a strip that adjusts the value of the decimal part of the number of rotations of the bobbin per reciprocation in order to suppress the collapse of the metal strip and damage to the strip.
- an object of the present invention is to provide a metal strip coil that suppresses the bulge of both end portions and has a good winding shape and a method for manufacturing the same.
- one aspect of the present invention is a metal strip coil in which a metal strip is wound around a winding core,
- the metal strip is wound from one end side to the other end side of the core with a winding angle inclined with respect to the axial direction of the core, folded at the other end, and the winding From the other end side of the core toward the one end side, the core is wound with a winding angle inclined with respect to the axial direction of the core, folded back at the one end, and repeatedly wound a plurality of times.
- the metal strip has a folded portion wound in a direction perpendicular to the axial direction of the core.
- the folded portion has an arc shape, and the folded portion is formed in a multi-stage shape from an inner periphery to an outer periphery, and a midpoint and an arc of the arc arc A line connecting the center of the circular arc is formed so as to rotate in one direction step by step in the order of the arcuate folded portion formed in a multi-stage shape from the inner periphery toward the outer periphery. .
- a line connecting a middle point of the arc of the arcuate portion of the folded portion at the a-th stage (a is a natural number) and the center of the arc, and the folding at the (a + 1) -th stage The angle (°) between the folded portions defined by the angle formed by the line connecting the midpoint of the arc of the arc and the center of the arc is an angle other than the angle represented by a divisor of 360.
- the angle between the folded portions is more than 15 ° and less than 345 °.
- a line connecting a midpoint of the arc-shaped arc of the folded portion and the center of the arc at the a-th stage (a is a natural number), and (a + 1) to (a + 4) -th stage
- the angle between the center of the arc of the arc of the folded portion of the eye and the line connecting the center of the arc is an angle greater than 6 °.
- the metal strip wound from one end side to the other end side of the core and from the other end side to the one end side has an overlap portion where one end of the adjacent metal strip overlaps. .
- the width of the overlap portion of the metal strip is 10% or more of the width of the metal strip.
- Another aspect of the present invention is a method of manufacturing a metal strip coil,
- the angle between the folded portions of the metal strip coil is derived from the following calculation formulas (1) and (2),
- the metal strip interval, the metal strip width, and the metal strip coil width are adjusted so that the angle between the folded portions obtained is an angle that excludes 0 ° or 360 °.
- Formula (1): (W oc + d) / (W s + d) (E + F)
- Formula (2): ⁇ ⁇ + 360 ° ⁇ F (W oc : metal strip coil width, d: metal strip spacing, W s : metal strip width, E: integer part of solution of equation (1), F: fractional part of solution of equation (1), ⁇ : angle between folded parts, ⁇ : Side turn part angle)
- the metal strip is wound by adjusting the metal strip interval, the metal strip width, and the metal strip coil width so that the angle (°) between the folded portions is an angle other than an angle represented by a divisor of 360.
- the tension at the end of winding is 20 to 90% of the tension at the start of winding.
- the composition of the metal strip that is the subject of the present embodiment is not particularly limited, but may be any material that has a composition of high carbon stainless steel that is generally applied to steel strips for blades, for example, by mass%. 0.3 to 1.5% C, 10 to 18% Cr, 1% or less (not including 0%) Si, 1.5% or less (not including 0%) Mn as essential components If necessary, it is an Fe-based alloy containing 3% or less (including 0%) of Mo.
- FIG. 2 (a) is a schematic front view showing the winding state of the metal strip coil of this embodiment
- FIG. 2 (b) is a side view of the metal strip coil of the present invention viewed from the direction of the arrow Y in FIG. 2 (a).
- a schematic diagram is shown. 2 (a) and FIG. 2 (b), the metal strip coil of the present embodiment is formed by winding the metal strips 7a and 7b around the winding core 9 in a spiral shape with an interval d between the metal strips (oscillate winding). It is produced by.
- FIG. 1 is a schematic front view showing the winding state of the metal strip coil of this embodiment
- FIG. 2 (b) is a side view of the metal strip coil of the present invention viewed from the direction of the arrow Y in FIG. 2 (a).
- a schematic diagram is shown. 2 (a) and FIG. 2 (b)
- the metal strip coil of the present embodiment is formed by winding the metal strips 7a and 7b around the winding core 9 in a
- winding is performed from one end side A to the other end side B of the core at a winding angle ⁇ (winding angle inclined with respect to a direction perpendicular to the axial direction of the core).
- ⁇ winding angle inclined with respect to a direction perpendicular to the axial direction of the core.
- the metal strip 7a reaches the other end B, it turns back.
- the metal strip forms a folded portion 8 wound in a direction perpendicular to the axial direction of the core.
- the coil is wound at a winding angle ⁇ (winding angle inclined with respect to a direction perpendicular to the axial direction of the core) from the other end B of the coil toward the one end A, and this is repeated to repeat this embodiment.
- Formed metal strip coils are formed.
- the paper tube is applied to the coil core.
- a reel having a side plate may be used, and a rubber or metal core may be applied.
- the folded portion 8 wound in a direction perpendicular to the axial direction of the winding core. (Where ⁇ is 0 °) is formed at both ends of the metal strip coil (in FIGS. 2A and 2B, only the folded portion on the other end B side is shown).
- turning part formed in the different layer is arrange
- the folded portion 8 has an arc shape, and this angle ⁇ is also referred to as the central angle of the arc of the folded portion 8 (hereinafter referred to as the side folded portion angle). ). If the turn-up portion 8 described above overlaps when winding progresses and the outer diameter of the metal strip coil increases, that portion rises and becomes a factor of deteriorating the final coil shape. Therefore, an important feature of the present invention is that, as shown in FIG. 3, a line connecting the midpoint of the arc of the folded portion and the center of the arc is formed in a multistage shape from the inner periphery toward the outer periphery. It is formed so as to rotate in one direction step by step in the order of the arcuate folded portion.
- a line connecting the midpoint of the arc of the folded portion 8 and the center of the arc (hereinafter also simply referred to as “folded portion center line”) is unidirectional so as not to overlap in the upper and lower folded portions.
- the center line of the folded portion is not overlapped by the upper and lower folded portions by sequentially shifting the rotation. That is, in the metal strip coil of the present invention, the line connecting the midpoint of the arc of the arcuate part of the folded part and the arc center in the (a + 1) stage (a is a natural number) is the arc shape of the folded part in the a stage.
- FIG. 3 is a schematic side view of a metal strip coil having the same field of view as FIG.
- a folded portion at a stage a (a is an arbitrary natural number) is 8a
- a folded portion at the (a + 1) stage is 8b
- a folded portion at the (a + 2) stage is 8c.
- Side surface folded portion angles of the folded portions 8a, 8b, and 8c are shown as ⁇ 1, ⁇ 2, and ⁇ 3.
- the folded portion 8b is formed so as to be shifted counterclockwise relative to the directly folded portion 8a.
- the folded portion 8c is also shifted counterclockwise relative to the directly folded portion 8b. Is formed.
- the folded portion center line G1 in the a-th stage, the folded-part center line G2 in the (a + 1) -th stage, and the folded-part center line G3 in the (a + 2) -th stage are separated from each other so as not to overlap (rotate). Is formed).
- the folded portion 8 in this way the rising of the end of the metal strip coil can be suppressed even when the winding progresses, and a good rolled-up shape can be obtained.
- this specification demonstrates the edge part folding
- the fan-shaped regions drawn by the folded portions 8a to 8c and the central axis O are formed so that they do not completely overlap each other. However, if the folded portion center lines do not overlap, Parts can be overlapped.
- the overlapping of the folded portions means that the fan-shaped regions drawn by the folded portions and the central axis O are overlapped in the side view of FIG.
- the side turn portion angle is constant in the side view of the metal strip coil, and the arc length of the inner turn portion 8 is equal to the arc length of the outer turn portion 8.
- it is less than 70%. More preferably, it is 50% or less, More preferably, it is 30% or less. In the present embodiment, it is preferable that the change amount of the side folded portion angle is within ⁇ 5%.
- the metal strip coil of the present embodiment has a line connecting the midpoint of the arc of the arcuate portion of the folded portion at the a-th stage and the center of the arc, and the arc-shaped arc of the folded portion at the (a + 1) -th stage.
- the angle between the folded portions defined by the angle formed by the midpoint and the line connecting the center of the arc is preferably an angle excluding a multiple of 15 °. From FIG. 3, the angle ⁇ 1 formed between the a-fold folded portion center line G1 and the (a + 1) -fold folded portion center line G2 is the angle between the folded portions between the a-stage and the (a + 1) -th row. .
- the angle ⁇ 2 formed between the (a + 1) -th folded portion center line G2 and the (a + 2) -th folded portion center line G3 is between the folded portions between the (a + 1) -th and (a + 2) -th steps. Is an angle. If the angle between the folded portions is an angle represented by a divisor of 360, the position of the folded portion becomes a factor causing deterioration of the coil shape when the winding proceeds. (For example, the position of the folded portion is repeated every two layers for 180 °, and every six layers for 60 °.) By excluding the above-mentioned angle, even if the winding layer increases, the overlap of the folded portions is reduced.
- the angle represented by a number obtained by subtracting such a divisor from 360 is more preferable to exclude the angle represented by a number obtained by subtracting such a divisor from 360.
- the amount of change in the angle between the folded portions for each wound layer is preferably within ⁇ 3 °, and more preferably within ⁇ 1 °. Within the above range, it is possible to obtain the metal strip coil of the present invention with good workability without fine adjustment of the angle at the time of manufacturing the metal strip coil.
- the angle between the folded portions in this embodiment excludes angles of 0 ° to 15 ° and 345 ° to 360 °.
- the fan-shaped regions that can be drawn by the folded portions 8a to 8c and the central axis O can be formed sufficiently far away, and the effect of further suppressing deterioration of the shape of the metal strip coil is expected. it can.
- the a-fold folded portion center line and the (a + 1) to (a + 4) -stage respectively It is more preferable that the angle with the folded portion center line is an angle larger than 6 °.
- the angle between the center line of the folded portion at the a-th stage and the center line of each folded-back section at the (a + 1) to (a + 7) -th stage is an angle larger than 6 °.
- the side turn portion angle is preferably 10 ° to 180 °. It is considered that when the side turn portion angle is less than 10 °, breakage of the metal strip due to a rapid change in the winding angle and deterioration of the winding shape are likely to occur. When the side turn part angle is more than 180 °, the deterioration of the winding shape due to the overlap of the turn part tends to increase. A more preferable lower limit of the side turn portion angle is 20 °. Moreover, the upper limit of a more preferable side surface folding
- the metal strip coil of the present embodiment is a metal strip that is adjacent in the axial direction of the core of the metal strip wound from one end side to the other end side of the core and from the other end side to the one end side. It is preferable to have an overlap part with which the edge part overlaps. This is particularly effective when oscillating a wide metal strip (for example, 10 mm or more).
- FIG. 4 is a schematic view of the folded portion of the metal strip coil as viewed from the direction of the arrow X in FIG. As shown in FIGS. 4 (a) and 4 (b), when the width of the metal strip is increased, the winding angle of the metal strip must be increased in order to make the interval d between the metal strips. The length h increases.
- the overlap portion 20 where the ends of the metal strips are overlapped an excessive lifting height is suppressed by reducing the winding angle of the metal strips, and a wide metal Even in the case of a strip, a coil having a good shape can be obtained.
- the width of the overlap portion is 10% or more of the width of the metal strip.
- the overlap width is more preferably 80% or less of the width of the metal strip.
- the winding core diameter applied to the metal strip coil of the present embodiment may be of various sizes depending on the application. For example, when winding a larger amount of metal strip, it is effective in this embodiment to set the core diameter to 300 mm or more. Conventionally, when a wide metal strip is wound around a core having a core diameter of about 300 mm, for example, the metal strip tends to be bent due to a sudden change in the winding angle. Increasing the diameter of the core is effective for suppressing this breakage failure, but there is a concern that the total amount of metal strips that can be wound is reduced and productivity is lowered.
- the metal strip coil of this embodiment can suppress bending of the metal strip by adjusting the overlap width described above, even a wide metal strip can be stably wound around a core having a core diameter of, for example, 300 mm. It is. A more preferable lower limit of the core diameter is 330 mm.
- the upper limit of the core diameter is not particularly defined, but if it is too large, the amount of winding of the metal strip is reduced, so it may be 600 mm, for example.
- FIG. 1 shows an example of a device configuration used in this embodiment.
- the metal strip cut after the cold rolling step is wound into a pancake coil shape and installed in the unwinding machine 1.
- the tension of the metal strip unwound from the unwinder is controlled by the dancer 4, it is wound spirally around the core 9 and the like installed in the winder through the arm portion 5, and this embodiment. It becomes the metal strip coil 6 of a form.
- the oscillating coil is produced by reciprocating the arm part, but the oscillating coil may be produced by reciprocating the winding core 9 while fixing the arm part.
- the angle between the folded portions of the metal strip coil of the present embodiment can be obtained from the following calculation formulas (1) and (2).
- Formula (1): (W oc + d) / (W s + d) (E + F)
- Formula (2): ⁇ ⁇ + 360 ° ⁇ F
- W oc is a metal strip coil width
- d is a metal strip interval
- W s is a metal strip width
- E is an integer part of the solution of equation (1)
- F is a decimal part of the solution of equation (1)
- ⁇ is a turn
- the inter-part angle, ⁇ indicates the side folded part angle.
- the metal strip interval, the metal strip width, and the metal strip coil width are adjusted so that the angle between the folded portions derived using the above calculation formula is an angle that excludes 0 ° or 360 °. .
- the metal strip interval, the metal strip width, and the metal strip coil width are adjusted so that the angle (°) between the folded portions is an angle other than an angle represented by a divisor of 360.
- the upper limit of the metal strip width W s is not particularly limited, but if it is too wide, it is necessary to increase the diameter of the coil in order to stably wind the metal strip so that the metal strip is not damaged.
- the lower limit of the metal strip width W s is not particularly limited, but may be set to 10 mm in order to reliably exhibit the effect of the overlapping portion of the metal strip end portion described above.
- the side turn part angle In order to adjust the side turn part angle, it can be adjusted by stopping the reciprocating movement of the arm part for a certain period of time when the reciprocating arm part reaches the end of the predetermined metal strip coil width. It is. For example, when the rotation speed of the metal strip coil is set at 60 rpm and the angle of the side folded portion is to be adjusted to 45 °, when the arm portion reaches the end of the metal strip coil width, By stopping the reciprocating motion for 0.125 seconds, the side folding portion can be adjusted to 45 °.
- the overlap width can be adjusted by the amount of parallel movement of the arm portion (the amount of movement in the direction parallel to the axis of the core) while the metal strip goes around the core. For example, when it is desired to adjust the metal strip width to 20 mm and the overlap width to 5 mm, the arm portion parallel movement amount while the metal strip goes around the winding core may be adjusted to 15 mm.
- the tension at the end of winding is 20 to 90% of the tension at the start of winding. Further, when winding the metal strip, it is preferable to gradually reduce the winding tension from the start of winding to the end of winding.
- the internal stress of the metal coil can be adjusted and the occurrence of shape defects such as telescopes can be suppressed, so that a large amount of metal strip can be wound stably. Is possible.
- a preferable upper limit of the tension at the end of winding is 70% at the start of winding.
- a more preferable upper limit of the tension at the end of winding is 50% at the start of winding.
- the reel for winding the metal strip may be subjected to tension control by a rotational speed control, a frictional resistance control mechanism, or the like, and an existing tension control device such as a tension pad or a bridle roll. May be incorporated in front of the take-up reel to control the tension.
- Example 1 A metal strip of martensitic stainless steel having a composition shown in Table 1 and having a width of 22 mm and a thickness of 0.1 mm is prepared, wound in a spiral shape on a paper tube having an outer diameter of 350 mm, and having an outer diameter of 600 m and a coil width of 160 mm.
- a metal strip coil was produced. When manufacturing the coil, the tension at the end of winding was adjusted to be about 20% to 50% of the tension at the start of winding. The side turn part angle was adjusted to 45 °.
- Table 2 two types of metal strip coils of the present invention were produced, with metal strip spacings of -9.4 mm (Invention Example 1) and -11.8 mm (Invention Example 2).
- FIG. 5 is a graph obtained by measuring the position of the folded portion from the first stage (first layer) to the fourteenth stage (14th layer) of the metal strip coil.
- the position of the folded portion of the (a + 1) -th stage (a is an arbitrary natural number) is represented by an angle with respect to the position of the folded-back portion of the stage, and one stage when the coil is viewed from the side.
- FIG. 1 and FIG. 2 The observation result of 2 is shown. These indicate that the folded portion is moving in one direction in order from the first stage.
- the metal strip coil was adjusted so that the angle between the folded portions was adjusted to 360 ° (the folded portion overlapped over the entire winding layer), and a large rise occurred at the coil end. I confirmed that
- No. 1 metal strip coil had a height difference of approximately 0 mm between the central portion in the coil width direction and both end portions, and it was confirmed that the metal strip coil had a very good winding shape with no rise.
- the metal strip coil of Example 2 of the present invention had a shape in which both ends of the coil were slightly raised from the central portion in the width direction, but the metal strip coil was raised more than the metal strip coil in which the folded portion overlapped over the entire winding layer. It was confirmed to be small.
- FIG. No. 1 metal strip coil does not overlap at the same position in 14 layers. This is because the coil of No. 2 overlaps the position angle of the side folded portion once every four layers.
- Example 2 Next, the effect of the overlap width was confirmed.
- a metal strip of martensitic stainless steel having a composition shown in Table 1 having a width of 22 mm and a thickness of 0.1 mm is spirally wound around a paper tube having an outer diameter of 350 mm and the metal strip is set at an interval of +1 mm.
- a coil (No. 3) was produced, and the wound shape was observed.
- Other manufacturing conditions for the metal strip coil are as described in No. 1 of Example 1. Same as 1.
- the metal strip interval “+1 mm” indicates that adjacent metal strips do not overlap and a 1 mm interval is left. As a result of confirmation, no. No. 3 coil was bent due to an increase in winding angle.
- the winding shape was slightly inferior to that of the first metal strip coil.
- No. 4 metal strip coil is No.4. Although the amount of winding was less than 1 and productivity was also inferior, it was confirmed that the swell at the coil end could be suppressed.
- Example 3 Then, the influence regarding the overlap area
- Four metal strip coils were produced. Other manufacturing conditions for the metal strip coil are as described in No. 1 of Example 1. Same as 1.
- FIG. The graph which measured the position of the folding
- the folding portion position angle of 4 is formed so as not to overlap every winding layer, but the a stage and a + 3 stage (for example, the second stage, the fifth stage, the third stage, the sixth stage, the fourth stage, The angle difference of the seventh stage) was about 5 °. As a result, no. In the metal strip coil No. 3, there is a difference in level difference on the side of the coil that is practically acceptable. Although the winding shape was slightly inferior to that of No. 1 metal strip coil, it was confirmed that the rise at the coil end could be suppressed.
- Metal strip 2 Pancake coil 3: Welding machine 4: Dancer 5: Arm portion 6: Metal strip coils 8, 8a, 8b, 8c: Turn-up portion 9.
- Winding cores 20a, 20b, 20c Winding layers 25a, 25b, 25c: Overlap portion d: Metal strip gaps g1, g2, g3: Center portion of folded portion h: Lifting height
- O Metal strip coil central axis ⁇ , ⁇ : winding angle ⁇ , ⁇ 1, ⁇ 2, ⁇ 3: side turn part angle ⁇ , ⁇ 1, ⁇ 2, ⁇ 3: turn part angle
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Abstract
Description
そこで本発明の目的は、両端部の盛り上がりを抑制し、巻き上がり形状が良好な金属条コイルおよびその製造方法を提供することである。
前記金属条は、前記巻芯の一端側から他端側に向かって、前記巻芯の軸方向に対して傾斜した巻取り角度を有して巻回され、前記他端部において折返し、前記巻芯の前記他端側から一端側に向かって、前記巻芯の軸方向に対して傾斜した巻取り角度を有して巻回され、前記一端部において折返し、これを複数回繰り返して巻回されており、
前記折返しにおいて、前記金属条は、前記巻芯の軸方向に対して垂直な方向に巻回された折返し部を有し、
前記金属条コイルの側面視において、前記折返し部は円弧状となっており、かつ前記折返し部は内周から外周に向かって多段状に形成されており、前記円弧状の弧の中点と弧の中心とを結ぶ線が、前記内周から外周に向かって多段状に形成された前記円弧状の折返し部の順に、段階的に一方向に回転するように形成されていることを特徴とする。
好ましくは、金属条コイルの側面視において、a段目(aは自然数)における前記折返し部の前記円弧状の弧の中点と弧の中心とを結ぶ線と、(a+1)段目における前記折返し部の前記円弧状の弧の中点と弧の中心とを結ぶ線とのなす角度で定義する折返し部間角度(°)は、360の約数で表される角度以外の角度である。
好ましくは、前記折返し部間角度は、15°を超え345°未満である。
好ましくは、金属条コイルの側面視において、a段目(aは自然数)における前記折返し部の前記円弧状の弧の中点と弧の中心とを結ぶ線と、(a+1)~(a+4)段目における前記折返し部の前記円弧状の弧の中点と弧の中心とを結ぶ線との角度が、6°より大きい角度である。
好ましくは、前記巻芯の一端側から他端側に、および前記他端側から一端側に向かって巻回されている金属条において、隣り合う金属条の一端が重なっているオーバーラップ部を有する。
好ましくは、金属条のオーバーラップ部の幅は、金属条の幅の10%以上である。
金属条コイルの折返し部間角度を下記の計算式(1)、(2)より導出し、
得られる折返し部間角度が0°または360°を除外する角度となるように金属条間隔、金属条幅、金属条コイル幅を調整する、金属条コイルの製造方法である。
式(1):(Woc+d)/(Ws+d)=(E+F)
式(2):φ=γ+360°×F
(Woc:金属条コイル幅、d:金属条間隔、Ws:金属条幅、
E:式(1)の解の整数部、F:式(1)の解の小数部、φ:折返し部間角度、
γ:側面折返し部角度)
好ましくは、前記折返し部間角度(°)は、360の約数で表される角度以外の角度となるように、金属条間隔、金属条幅、金属条コイル幅を調整して金属条を巻取る。
好ましくは、前記金属条を巻芯に巻き回す際、巻取り終了時の張力を、巻取り開始時の張力の20~90%とする、
式(1):(Woc+d)/(Ws+d)=(E+F)
式(2):φ=γ+360°×F
ここで、Wocは金属条コイル幅、dは金属条間隔、Wsは金属条幅、Eは式(1)の解の整数部、Fは式(1)の解の小数部、φは折返し部間角度、γは側面折返し部角度を示す。これらのパラメータを調整することで、本実施形態の金属条コイルに適した折返し部間角度を得ることができる。本実施形態の製造方法では、上記の計算式を用いて導出した折返し部間角度が0°または360°を除外する角度となるように、金属条間隔、金属条幅、金属条コイル幅を調整する。上記の式を用いることで、所望の折返し部間角度を得るために必要な各パラメータを、容易に導出することができる。好ましくは、折返し部間角度(°)は、360の約数で表される角度以外の角度となるように、金属条間隔、金属条幅、金属条コイル幅を調整する。金属条幅Wsの上限は特に限定しないが、あまりに広幅であると金属条が損傷しない様、安定して巻取を行う為にはコイル大径化などを講じる必要があり、生産性や効率が低下する傾向にあるため、40mmに設定することが好ましい。また金属条幅Wsの下限も特に限定しないが、上述した金属条端部のオーバーラップ部の効果を確実に発揮させるために、10mmと設定してもよい。
(実施例1)
表1に示す組成を有する、幅22mm、厚さ0.1mmのマルテンサイト系ステンレス鋼の金属条を準備し、外径350mmの紙管に螺旋状に巻回して外径600m、コイル幅160mmの金属条コイルを作製した。なおコイルを作製する際、巻取り終了時の張力を、巻取り開始時の張力の約20%~50%となるように調整した。側面折返し部角度は45°に調整した。表2に示すように、本発明の金属条コイルは金属条間隔を-9.4mm(本発明例1)、-11.8mm(本発明例2)の2種類を作製した。この金属条間隔は、式(1):(Woc+d)/(Ws+d)=(E+F)、式(2):φ=γ+360°×F(Woc:金属条コイル幅、d:金属条間隔、Ws:金属条幅、E:式(1)の解の整数部、F:式(1)の解の小数部、φ:折返し部間角度、γ:側面折返し部角度)を用い、折返し部間角度が0°または360°にならないよう調整した。なお上記の金属条間隔の「-」とは、金属条の一端が図4(c)に示すようにオーバーラップしていることを示しており、例えば-9.4mmとは、オーバーラップ幅が9.4mmであることを示す。観察結果を表2、図5に示す。なお表2の折返し部間角度は、各巻層における角度を示し、紙管の回転方向を基準として測定している。図5は金属条コイルの1段目(1層目)から14段目(14層目)までの折返し部の位置を測定したグラフであり、縦軸の「折返し部位置角度」とは、1段目の折返し部位置を基準として(a+1)段目(aは任意の自然数)の折返し部がどの位置に存在するかを角度で表したものであり、コイルを側面から見た際の1段目の折返し部中心線と、(a+1)段目(aは任意の自然数)を通る直線とのなす角(紙管回転方向での絶対角)である。図5(a)はNo.1、図5(b)はNo.2の観察結果を示す。これらは、1段目から順に折返し部が一方向に移動していることを示している。なお事前の実験により、金属条間隔を調整して折返し部間角度を360°に調整した(折返し部が全巻層に渡って重複している)金属条コイルは、コイル端部に大きな盛り上がりが発生していることを確認した。
次に、オーバーラップ幅の効果を確認した。表1に示す組成を有する、幅22mm、厚さ0.1mmのマルテンサイト系ステンレス鋼の金属条を外径350mmの紙管に金属条を間隔+1mmに設定して螺旋状に巻回し、金属条コイル(No.3)を作製し、巻き上がり形状を観察した。金属条コイルのその他の製造条件は、実施例1のNo.1と同じである。なお金属条間隔の「+1mm」とは、隣接する金属条がオーバーラップしておらず、1mmの間隔が空いていることを示す。確認の結果、No.3のコイルには巻取り角度の増大による折れが発生しており、No.1の金属条コイルより巻き形状が若干劣る結果となった。一方で外径550mmの紙管に、No.3の金属条コイルと同じ製造条件で作製したNo.4の金属条コイルは、No.1より巻取り量が少なく生産性も劣るが、コイル端部における盛り上がりを抑制できていることが確認できた。
続いて、折り返し部の重複領域に関する影響を確認した。実施例1のNo.1の製造条件をベースに、金属条コイル幅を変化させて各巻層における折返し部間角度を118°に調整したNo.4の金属条コイルを作製した。金属条コイルのその他の製造条件は、実施例1のNo.1と同様である。図6にNo.4の金属条コイルの1段目から14段目までの折返し部の位置を測定したグラフを示す。図に示すように、No.4の折返し部位置角度は巻層毎に重複しないように形成されているが、a段目とa+3段目(例えば2段目と5段目、3段目と6段目、4段目と7段目)の角度差がおよそ5°であった。これにより、No.3の金属条コイルは、コイル側面に実用上問題ない程度の段差上ズレが生じており、No.1の金属条コイルより巻き形状が若干劣っていたが、コイル端部における盛り上がりが抑制できていることが確認できた。
2:パンケーキコイル
3:溶接機
4:ダンサ
5:アーム部
6:金属条コイル
8、8a、8b、8c:折返し部
9.巻芯
20a、20b、20c:巻層
25a、25b、25c:オーバーラップ部
d:金属条間隔
g1、g2、g3:折返し部の中央部
h:浮上がり高さ
O:金属条コイル中心軸
α、β:巻取り角度
γ、γ1、γ2、γ3:側面折返し部角度
φ、φ1、φ2、φ3:折返し部間角度
Claims (9)
- 金属条が巻芯に巻回されてなる金属条コイルであって、
前記金属条は、前記巻芯の一端側から他端側に向かって、前記巻芯の軸方向に対して傾斜した巻取り角度を有して巻回され、前記他端部において折返し、前記巻芯の前記他端側から一端側に向かって、前記巻芯の軸方向に対して傾斜した巻取り角度を有して巻回され、前記一端部において折返し、これを複数回繰り返して巻回されており、
前記折返しにおいて、前記金属条は、前記巻芯の軸方向に対して垂直な方向に巻回された折返し部を有し、
前記金属条コイルの側面視において、前記折返し部は円弧状となっており、かつ前記折返し部は内周から外周に向かって多段状に形成されており、前記円弧状の弧の中点と弧の中心とを結ぶ線が、前記内周から外周に向かって多段状に形成された前記円弧状の折返し部の順に、段階的に一方向に回転するように形成されていることを特徴とする金属条コイル。 - 前記金属条コイルの側面視において、a段目(aは自然数)における前記折返し部の前記円弧状の弧の中点と弧の中心とを結ぶ線と、(a+1)段目における前記折返し部の前記円弧状の弧の中点と弧の中心とを結ぶ線とのなす角度で定義する折返し部間角度(°)は、360の約数で表される角度以外の角度であることを特徴とする請求項1に記載の金属条コイル。
- 前記折返し部間角度は、15°を超え345°未満であることを特徴とする請求項2に記載の金属条コイル。
- 前記金属条コイルの側面視において、a段目(aは自然数)における前記折返し部の前記円弧状の弧の中点と弧の中心とを結ぶ線と、(a+1)~(a+4)段目におけるそれぞれの前記折返し部の前記円弧状の弧の中点と弧の中心とを結ぶ線との角度が、6°より大きい角度であることを特徴とする請求項1乃至3のいずれかに記載の金属条コイル。
- 前記巻芯の一端側から他端側に、および前記他端側から一端側に向かって巻回されている金属条において、隣り合う金属条の一端が重なっているオーバーラップ部を有することを特徴とする請求項1乃至4のいずれかに記載の金属条コイル。
- 前記金属条のオーバーラップ部の幅は、前記金属条の幅の10%以上であることを特徴とする請求項5に記載の金属条コイル。
- 請求項1~5に記載の金属条コイルの製造方法であって、
金属条コイルの折返し部間角度を下記の計算式(1)、(2)より導出し、
得られる折返し部間角度が0°または360°を除外する角度となるように金属条間隔、金属条幅、金属条コイル幅を調整して金属条を巻取る、金属条コイルの製造方法。
式(1):(Woc+d)/(Ws+d)=(E+F)
式(2):φ=γ+360°×F
(Woc:金属条コイル幅、d:金属条間隔、Ws:金属条幅、
E:式(1)の解の整数部、F:式(1)の解の小数部、φ:折返し部間角度、
γ:側面折返し部角度) - 前記折返し部間角度(°)は、360の約数で表される角度以外の角度となるように、金属条間隔、金属条幅、金属条コイル幅を調整して金属条を巻取る、請求項7に記載の金属条コイルの製造方法。
- 前記金属条を巻芯に巻き回す際、巻取り終了時の張力を、巻取り開始時の張力の20~90%とする、請求項7または8に記載の金属条コイルの製造方法。
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JPH03133878A (ja) | 1989-10-19 | 1991-06-07 | Nippon Mining Co Ltd | 条の巻き取り方法 |
JPH06312878A (ja) * | 1993-04-28 | 1994-11-08 | Mitsubishi Cable Ind Ltd | 線材の巻き付け方法 |
WO1995013237A1 (fr) * | 1993-11-09 | 1995-05-18 | Thominet Gerard | Procede de decalage des couches d'un bobinage et dispositif de mise en ×uvre |
JPH09300018A (ja) * | 1996-05-15 | 1997-11-25 | Nikko Kinzoku Kk | 連続条トラバース巻取システム |
JP2008100770A (ja) * | 2006-09-20 | 2008-05-01 | Hitachi Cable Ltd | レベルワウンドコイルとその製造方法、およびレベルワウンドコイルの包装体 |
JP2009018911A (ja) * | 2007-07-12 | 2009-01-29 | Yutaka Seisakusho:Kk | 線材巻取装置 |
JP2009166991A (ja) * | 2008-01-18 | 2009-07-30 | Hitachi Cable Ltd | 精密平角線巻取り用ボビン及び太陽電池の製造方法 |
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US20190224734A1 (en) | 2019-07-25 |
US11097324B2 (en) | 2021-08-24 |
KR20190042674A (ko) | 2019-04-24 |
EP3521223A1 (en) | 2019-08-07 |
CN109789982B (zh) | 2020-09-22 |
EP3521223B1 (en) | 2023-07-26 |
JPWO2018062375A1 (ja) | 2019-06-24 |
EP3521223A4 (en) | 2020-06-03 |
JP6670456B2 (ja) | 2020-03-25 |
KR102214175B1 (ko) | 2021-02-09 |
PL3521223T3 (pl) | 2023-09-11 |
CN109789982A (zh) | 2019-05-21 |
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