JP2011184132A - Method of winding belt-like article - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method of winding a belt-like article which contributes to the simplification of the structure of a winding device and can shorten the cycle time of the winding device. <P>SOLUTION: This method of winding a belt-like article includes: a step of wrapping the belt-like article 15 let out from a master roll around a bobbin 17; a step of cutting off the belt-like article 15 wrapped around the bobbin 17 from the master roll 19 so that the length of the belt-like article 15 wrapped around the bobbin 17 matches the overall length of the belt-like article to be wrapped around a winding shaft 3; a step of locking the belt-like article 15 wrapped around the bobbin 17 to the winding shaft 3 of the winding device 1; and a step of wrapping the belt-like article 15 let out from the bobbin 17 around the winding shaft 5 according to the rotation of the winding shaft 5. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a strip winding method for winding a strip as a material of a capacitor or a battery.

  As shown in FIG. 6A, the strip 101 such as a metal foil electrode or a separator is wound around the winding shaft 107 of the winding device 105 while being fed out from the original fabric 103 in the direction of arrow F. When the length of the strip 101 wound on the winding shaft 107 reaches the entire length of the strip used as a material for a capacitor or a battery, for example, the strip 101 is cut. Cut at 109. Subsequently, the cut end of the strip 101 wound around the winding shaft 107 is fixed to the peripheral surface 111 with an adhesive tape or the like so that the cut cut by the cutter 109 cannot be opened.

  As shown in FIG. 6B, when the turret 113 of the winding device 105 rotates, the positions of the winding shaft 107 and the winding shaft 107 'are switched. The strip 101 wound on the winding shaft 107 is removed from the winding shaft 107 and carried out to other places. On the other hand, the end portion 115 of the belt-like object 101 further drawn out from the original fabric 103 is locked to the winding shaft 107 '. Thereafter, the belt-like object 101 is wound around the winding shaft 107 ′ according to the rotation of the winding shaft 107 ′. Reference numeral 117 indicates a tension roller.

  Conventionally, the belt-like object 101 may meander due to the inherent warpage of the belt-like object 101 in the process of the belt-like object 101 traveling from the original fabric 103 to the winding shaft 107 of the winding device 105. In order to suppress this, the correction roller 119 is brought into rolling contact with the strip 101 and is controlled so that the posture of the correction roller 119 is tilted in a direction in which the meandering of the strip 101 is canceled. However, the higher the speed at which the strip 101 travels in order to shorten the operation cycle of the winding device 105, the more difficult the above control becomes.

  In addition, when an active material layer is formed on the surface of the strip 101, dust of the active material may be scattered when the cutter 109 cuts the strip 101. When such dust enters the bearings of the winding shaft 107, the winding device 105 may be malfunctioning. In addition, the time required to lock the end portion 115 of the belt-like object 101 to the winding shaft 107 is problematic in that the proportion of the operation cycle of the winding device 105 is high.

  As described above, a plurality of strips are wound around one winding shaft. For example, to manufacture a capacitor, two separators and a cathode and an anode separated from each other by these separators are wound around one winding shaft.

JP 7-172644 A Japanese Patent Laid-Open No. 9-194091

  An object of the present invention is to provide a belt-like material winding method that contributes to simplifying the structure of the winding device and that can shorten the cycle time of the winding device.

  The present invention is a belt-like material winding method for winding a belt-like material fed out from the original fabric around a winding shaft of a winding device, the step of winding the belt-like material drawn out from the original fabric onto a bobbin; Cutting the strip wound on the bobbin from the original fabric so that the length of the strip wound on the bobbin coincides with the entire length of the strip wound around the winding shaft. And a step of locking the belt wound around the bobbin on the winding shaft of the winding device, and a belt wound out of the bobbin according to the rotation of the winding shaft is wound around the winding shaft. It consists of a process.

  Further, the present invention is a belt-like material winding method for winding a plurality of strips fed from a plurality of original fabrics around each other so as to overlap each other, and from the plurality of original fabrics. A step of winding a plurality of strips to be wound around a plurality of bobbins, and a length of each of the strips wound around the plurality of bobbins around the winding shaft. Cutting the plurality of strips wound around the plurality of bobbins from the plurality of original fabrics so as to match the entire length, and the plurality of strips wound around the plurality of bobbins to the winding The method includes a step of locking each of the winding shafts of the apparatus, and a step of winding a plurality of strips fed from the plurality of bobbins according to the rotation of the winding shaft around the winding shaft.

  Further, according to the present invention, the winding device includes a plurality of winding shafts, a belt-like object fed out from the original fabric is wound around a bobbin, and the belt-like material wound around the bobbin is wound out of the plurality of winding shafts. A bobbin is newly prepared while the belt-like object that is locked to the one winding shaft and is wound around the one winding shaft is wound around the one winding shaft according to the rotation of the one winding shaft. The belt-like material wound around is locked to another winding shaft among the plurality of winding shafts.

  According to the method for winding a strip according to the present invention, it is possible to relatively shorten the stroke of the strip from the original fabric to the bobbin and the stroke of the strip from the bobbin to the winding shaft. For this reason, since the belt-like object is hardly bent or meandering, there is an advantage that the correction roller and the tension roller can be omitted and the structure of the winding device can be simplified. Further, since the strip is cut immediately after the strip is wound around the bobbin, the strip need not be cut in the vicinity of the winding shaft. For this reason, even if the dust of the active material may be scattered when the strip is cut, the position where the strip is cut is separated from the reel so that the dust does not reach the bearing of the reel. Easy.

  Further, according to the belt-like material winding method according to the present invention, a plurality of belt-like objects are simultaneously wound around a plurality of bobbins, and the belt-like objects wound around the plurality of bobbins are overlapped with each other to wind the winding shaft of the winding device. It can be wound around. For this reason, according to the said strip | belt-shaped object winding method, even if the number of the strip | belt-shaped objects wound around a winding shaft increases, the length of the operation | movement cycle of a winding apparatus can be suppressed to the minimum.

  Further, according to the belt-like material winding method according to the present invention, while the belt-like material fed out from the bobbin is wound around one winding shaft, a new bobbin is prepared and the belt-like material wound around the bobbin is prepared. Since the object is locked to the other winding shaft, the time required to lock the belt-shaped object to the winding shaft is not added to the operation cycle of the winding device. Therefore, the strip winding method is advantageous for increasing the number of strips that can be wound by the winding device per predetermined time.

The side view of the principal part of the winding apparatus applied to the strip | belt-shaped object winding method which concerns on embodiment of this invention. The side view which illustrates the outline of the 1st process of the strip | belt-shaped object winding method which concerns on embodiment of this invention. The perspective view of the principal part of the winding apparatus which illustrates the 2nd process of the strip | belt-shaped object winding method which concerns on embodiment of this invention. The side view which illustrates the outline of the 3rd process of the strip | belt-shaped object winding method which concerns on embodiment of this invention. The side view which illustrates the outline of the 4th process of the strip | belt-shaped object winding method which concerns on embodiment of this invention. Schematic explaining the strip | belt-shaped object winding method of a prior art example in order of (a), (b).

  A belt-like material winding method according to an embodiment of the present invention will be described. The drawings refer to FIG. 1 unless otherwise noted. The winding device 1 has four winding shafts 3, 5, 7 and 9 that are arranged at an equal pitch of 90 ° with each other and supported by a turret 11. The turret 11 only needs to be rotated about the fulcrum O in the direction of the arrow α. The winding shaft 3 only needs to have a slit 13 formed at the tip thereof and be rotated by a rotating machine. The same applies to the winding shafts 5, 7, and 9.

  First, as shown in FIG. 2, the bobbin 17 is rotated in the direction of arrow β, and the belt-like object 15 fed out from the original fabric 19 is wound around the bobbin 17. As shown in FIG. 3, the bobbin 17 is provided with flanges 23 at both ends of the shaft portion 21. The flange 23 regulates the sliding of the strip 15 with respect to the shaft portion 21 in the axial direction, but is not an essential element. FIG. 2 shows two bobbins 17 and two original fabrics 19, but two bobbins that are not shown in the figure also have the belt-like objects 15 drawn out from the individual original fabrics wound up.

  The strip 15 is cut from the original fabric 19. The length of the strip 15 wound around each bobbin 17 up to this point coincides with the total length of the strip used as a material for one capacitor, for example, a battery.

  As the above procedure, the length of the strip 15 wound around the bobbin 17 is measured based on the number of rotations of the bobbin 17 shown in FIG. The length of the strip 15 on the upstream side of the arrow F indicating the traveling direction of the strip 15 from the position 27 of the strip 15 facing the front of the cutter 25 reaches the above-mentioned full length. At this point, the cutter 25 is advanced so as to cut into the strip 15. When the cutter 25 returns to the illustrated position, the cutting of the belt-like object 15 is completed. Through the above-described steps, one capacitor 15 or a strip 15 that is a material such as a battery is wound around the four bobbins 17.

  Subsequently, the bobbin 17 is disposed in the vicinity of the winding shaft 3, and the belt-like object 15 wound around the bobbin 17 is held between the pair of nip rollers 29. The strip 15 is advanced toward the winding shaft 3 together with the pair of nip rollers 29, and a cut 31 for cutting the strip 15 by the cutter 25 is inserted into the slit 13 of the winding shaft 3. As a result, a strip 15 locked to the winding shaft 3 appears in FIG. In this state, the winding device 1 rotates the winding shaft 3. The belt-like object 15 wound around the bobbin 17 is fed out from the bobbin 17 in the direction of the arrow F ′ in FIG. 3 according to the rotation of the winding shaft 3 and wound around the winding shaft 3.

  Only one bobbin 17 of the above-described bobbins is shown in FIG. 1, but the second to fourth bobbins are also arranged in the vicinity of the winding shaft 3, and the strips wound around these bobbins are also the following: As shown in FIG. That is, the belt-like object 15 wound around one of the two bobbins 17 shown in FIG. 4 can be disposed inside the belt-like object 15 already locked to the winding shaft 3 only by bringing the cut end 31 close to the winding shaft 3. Get involved in. In the same manner, the strips wound around the third and fourth bobbins can be wound around the winding shaft 3, and the four strips can be overlapped with each other and wound around the winding shaft 3.

  Alternatively, the cut ends 31 of the belt-like object 15 wound around the two bobbins 17 are first inserted into the slits 13 of the winding shaft 3. Thus, when the two strips 15 locked to the winding shaft 3 are wound around the winding shaft 3, the strips wound around the third and fourth bobbins are wound around the winding shaft 3 in the manner described above. 3 may be involved.

  The winding device 1 rotates the turret 11 by 90 °, and moves the winding shaft 3 to the illustrated position of the winding shaft 5. During this time, the winding shaft 3 continues to rotate, and the strip 15 is unwound from the bobbin 17 as shown in FIG. Immediately before the end 33 of the band 15 is detached from the bobbin 17, the winding device 1 further rotates the turret 11 by 90 ° and moves the winding shaft 3 to the illustrated position of the winding shaft 7. The end 33 is fixed to the circumferential surface 34 of the band 15 so that the end 33 of the band 15 cannot be unraveled. This is performed by pressing the adhesive tape 35 supplied between the end 33 of the strip 15 and the peripheral surface 34 against the strip 15 with the pressing roller 37.

  The winding device 1 further rotates the turret 11 by 90 °, and moves the winding shaft 3 to the illustrated position of the winding shaft 9. The belt-like object 15 wound around the winding shaft 3 is extracted from the winding shaft 3 by an operation of a chuck or the like that grips the belt-like object 15, and is then placed on a conveyor or the like and carried out to another place.

  According to the belt-like material winding method described above, the bobbin from the raw fabric 19 of the belt-like material 15 is compared with the conventional example in which the belt-like material 15 travels directly from the raw fabric 19 to the winding shaft of the winding device 1. The stroke to 17 can be shortened, and the stroke from the bobbin 17 to the winding shaft 3 can also be shortened. For this reason, since the bending of the strip | belt-shaped object 15 which affects the quality of a capacitor | condenser manufactured by the winding apparatus 1, or a battery does not occur, a correction | amendment roller and a tension roller can be abbreviate | omitted. The structure of 1 can be simplified.

  In addition, the cutting of the strip 15 by the cutter 25 is performed immediately after the strip 15 is wound around the bobbin 17, so that the strip 15 need not be cut near the winding shaft 3. For this reason, even if an active material layer is formed on the surface of the strip 15, it is possible to take measures such as separating the position at which the strip 15 is cut from the winding shaft 3. It is easy not to reach.

  Further, according to the belt winding method, the plurality of strips 15 are simultaneously wound around the plurality of bobbins 17, and the strips 15 wound around the plurality of bobbins 17 are overlapped with each other to wind the winding device 1. It can be wound around the shaft 3. For this reason, even if the number of strips 15 wound around the winding shaft 3 increases to more than 4, the operation cycle of the winding device 1 is not delayed.

  Alternatively, the bobbin 17 is newly prepared while the strip 15 fed from the bobbin 17 is wound around the one winding shaft 5 according to the rotation of one winding shaft 5 of the plurality of winding shafts shown in FIG. Then, the strip 15 wound around the bobbin 17 may be locked to another winding shaft 3 among the plurality of winding shafts. In this case, since the time required to lock the strip 15 to the winding shaft 3 is not added to the operation cycle of the winding device 1, the winding device 1 is capable of producing capacitors, batteries, or the like that can be manufactured per predetermined time. Can be increased.

  It should be noted that the present invention can be implemented in various improvements, modifications, or variations based on the knowledge of those skilled in the art without departing from the spirit of the present invention. The number of reels, strips, bobbins, or webs can be arbitrarily increased or decreased. The turret 11 of the winding device 1 may be omitted. Further, the cutter 25, the nip roller 29, the adhesive tape 35, or the pressing roller 37 is not an element characterizing the present invention.

  The present invention is a technique useful for winding the strip 15 of any form in addition to the battery element material, the electrode of the capacitor, or the separator.

  DESCRIPTION OF SYMBOLS 1,105 ... Winding device, 3, 5, 7, 9, 107 ... Winding shaft, 11, 113 ... Turret, 13 ... Slit, 15, 101 ... Strip, 17 ... Bobbin, 19, 103 ... Original fabric, 21 ... Shaft part, 23 ... Flange, 25, 109 ... Cutter, 27 ... Location, 29 ... Nip roller, 31 ... Cut, 33 ... End, 34, 111 ... Peripheral surface, 35 ... Adhesive tape, 37 ... Pressing roller, 115 ... End , 117 ... tension roller, 119 ... correction roller.

Claims (3)

A belt-like material winding method for winding a belt-like material fed from a raw fabric around a winding shaft of a winding device,
A step of winding a belt-like object drawn from the original fabric onto a bobbin;
Cutting the strip wound on the bobbin from the original fabric so that the length of the strip wound on the bobbin coincides with the entire length of the strip wound around the winding shaft. When,
Locking the strip wound around the bobbin to the winding shaft of the winding device;
A method for winding a belt-shaped object comprising the step of winding a belt-shaped object fed out of the bobbin according to the rotation of the winding shaft around the winding shaft. A method of winding a plurality of strips fed from a plurality of original fabrics around each other, and winding them around a winding shaft of a winding device,
A step of winding a plurality of strips fed from the plurality of original fabrics around a plurality of bobbins,
A plurality of windings wound around the plurality of bobbins so that the lengths of the plurality of strips wound around the plurality of bobbins coincide with the total length of the strips wound around the winding shaft. Cutting a strip from the plurality of original fabrics,
Locking the plurality of strips wound around the plurality of bobbins to the winding shaft of the winding device;
A method of winding a strip, comprising: winding a plurality of strips fed from the plurality of bobbins according to the rotation of the winding shaft around the winding shaft. The winding device includes a plurality of winding shafts;
The belt-like material drawn out from the original fabric is wound around a bobbin, and the belt-like material wound around the bobbin is locked to one of the plurality of winding shafts,
A bobbin is newly prepared while the belt-like material fed out from the bobbin according to the rotation of the one winding shaft is wound around the one winding shaft, and the plurality of the belt-like materials wound around the bobbin are prepared. The belt-like material winding method according to claim 1, wherein the belt-like material winding shaft is locked to another winding shaft.

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