JPH0826539A - Method and device for winding tape-shaped part - Google Patents

Abstract

PURPOSE:To prevent a tape-shaped part from being left in the center part of a product, by placing the tape-shaped part in a slit of an outer core, thereafter holding the tape-shaped part interposed by a winding part of an inner core and the outer core, and releasing, after completion of winding the tape- shaped part, holding the tape-shaped part interposed by the core. CONSTITUTION:In the case that tape-shaped electrode foil (f) and separator (s), utilized in preparing a cell element, are wound to overlap, a plurality of sheets of the electrode foil (f) and separator (s) are supplied before a winding device in a piled condition. On the other hand, of a core supporting mechanism 4, simultaneously with leftward moving a hollow shaft 42 and the separator, inner core 2 and outer core 3, the electrode foil and separator are inserted into a slit 31 formed in the outer core 3. Next by rotating the inner core 2 180 deg. relating to the outer core 3, the electrode foil (f) and separator (s) are interposed between a circular arc-shaped external surface of the inner core 2 and an internal surf ace of the outer core 3. Thereafter, according to turning a turrent, winding is started, to release holding after the winding is ended.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for winding a tape-like component such as a tape or a ribbon, and more particularly to a battery element by stacking and winding a tape-like electrode foil and a separator. The present invention relates to a winding method and an apparatus suitable for use in making a reel.

[0002]

2. Description of the Related Art For example, when a tape-shaped electrode foil and a separator used in a battery are wound to form a battery element, conventionally, as shown in FIG.
A tape-like component t such as an electrode foil and a separator, which are superposed on each other, is passed through a slit b formed in the center of the tape by extending in the diametrical direction and opening at the front end. These battery elements were wound up as a battery element. However, when the battery element e formed by winding with such a core structure is detached from the core, due to the structural characteristics of the core, as shown in FIG. t will remain.

When a battery element formed by winding a tape-like component such as an electrode foil and a separator is used as a battery, the battery element is placed in a battery case c as shown in FIG. It is necessary to extend the negative electrode lead d connected to the bottom to the center of the bottom of the case c and join it at the center of the case with the welding electrode g inserted into the case. In this case, as shown in FIG. 13, the presence of a tape-shaped component such as an electrode foil and a separator at the center hindered the insertion of the welding electrode.

[0004] In order to prevent the tape-shaped component from remaining at the center of the tape-shaped component thus wound, for example, as disclosed in Japanese Patent Publication No. 6-30330 and shown in FIG. A method has been provided in which a core h having an arc-shaped cross section and a holding rod i having a circular cross section radially inward of the core h sandwich a tape-like component and wind it around them. In the method, the core h and the presser bar i must be axially moved from the opposite sides of the tape-shaped component and held, and after winding, the cores must be removed again by moving in opposite directions. However, there is a problem in that the mechanism becomes complicated and winding at high speed lacks practicality. There is also a problem that it is difficult to remove the wound product from the core and the holding rod.

[0005]

The problem to be solved by the present invention is to prevent the tape-shaped part from remaining at the center of the wound product and to allow the product to be easily removed from the core. It is to provide a method of winding.

Another object to be solved by the present invention is to provide a winding device suitable for high-speed operation and a winding core structure used for the winding device, which can be easily removed without leaving the tape-like member at the center. It is to provide.

[0007]

One of the inventions of the present application is to provide an inner winding having a winding portion which is arranged inside the sleeve-shaped outer winding core in which a slit extending in a diametrical direction is formed so as to be offset with respect to a rotation center. A core is disposed so as to be rotatable relative to the outer winding core, the tape-shaped component is passed through the slit, and then the inner winding core is rotated at a desired angle with respect to the outer winding core to form a winding portion of the inner winding core. By sandwiching the tape-shaped component with the outer winding core, then simultaneously rotating both winding cores to wind the tape-shaped component around the winding core, and then rotating the inner winding core relative to the outer winding core at a desired angle. It is configured to release the holding of the tape-shaped component.

Another aspect of the present invention relates to a sleeve-shaped outer winding core having slits extending in a diametrical direction in a winding core structure for winding a tape-shaped component, and the outer winding core inside the outer winding core. An inner winding core having a winding portion arranged so as to be capable of relative rotation and rotation with the outer winding core, the winding portion being offset with respect to the center of rotation; and the outer winding core and the winding portion of the inner winding core. It is configured to sandwich the tape-shaped component.

According to another aspect of the present invention, there is provided a winding device for winding a tape-shaped component, wherein a sleeve-shaped outer winding core having a slit extending in a diametrical direction is formed, and the outer winding core is provided inside the outer winding core. An inner winding core having a winding portion arranged to be rotatable relative to and rotatable with its outer winding core and offset relative to the center of rotation, and the inner and outer winding cores can be rotated relative to one another and simultaneously; And a first drive mechanism for simultaneously rotating the inner and outer cores, and independently rotating the inner core and moving the inner and outer cores in the axial direction. And a second driving mechanism for causing the second driving mechanism.

[0010]

In the winding structure and the winding device having the above construction, after the tape-shaped component is inserted into the slit of the outer winding core, the inner winding core is rotated relative to the outer winding core by a predetermined angle and the inner winding is performed. The tape-shaped part is sandwiched between the winding part of the core and the outer winding core. Thereafter, the inner core and the outer core rotate simultaneously to wind the tape-shaped component into a desired length. When winding is completed,
The inner winding core relatively rotates with respect to the outer winding core by a predetermined angle to release the sandwiching of the tape-shaped component by the two winding cores, thereby facilitating the removal of the rolled product from the winding core.

[0011]

Embodiments of the present invention will be described below with reference to the drawings, in which a battery element is manufactured by winding an electrode foil f and a separator s as a tape-shaped component t. 1 to 3 show an embodiment of a tape-shaped component winding device according to the present invention. In the figure,
The winding device 1 of this embodiment includes an inner winding core 2, a sleeve-shaped outer winding core 3 arranged concentrically with the inner winding core and surrounding the inner winding core, the inner winding core 2 and the outer winding. A core support mechanism 4 that supports the core 3 concentrically, a first drive mechanism 5 that simultaneously rotates the inner core 2 and the outer core 3, and relative rotation of the inner core 2 with respect to the outer core 3 and the inner core 2. And a second drive mechanism 6 for controlling the axial movement of the winding core and the outer winding core.

The inner core 2 of the core is formed of a solid shaft having a circular cross section, and has a distance L from the tip (the left end in FIG. 2).
About one half of the winding portion 21 over _one part is cut away, and the cross section is substantially semicircular. The cut flat surface 22 of the winding portion 21 is deviated from the center of the inner winding core 2 by δ, as shown in FIG. Further, the tip surface 23 of the inner core 2
Are inclined with respect to the axis as shown in FIG. The sleeve-shaped outer winding core 3 rotatably supports the inner winding core 2 on the inner side, and a winding portion 31 extending a distance L ₂ from the front end has a whole portion as shown in FIG. A slit 32 extending in the diameter direction. The width of the slit 32 is such a size that the tape-shaped component to be wound up, that is, the electrode foil f and the separator s, which are overlapped with each other, can be smoothly inserted. The distal end surface 33 of the outer winding core 3 is inclined with respect to the axis so that the electrode foil and the separator enter the slit 32 smoothly in a V-shape.

The core supporting mechanism 4 extends through a through hole 12 formed in the turret 10 which is intermittently rotated by a known means (not shown) around a center axis 11 and is spaced apart in a circumferential direction. An outer hollow shaft 41 rotatably supported by the bearing 13, an inner hollow shaft 42 disposed concentrically within the outer hollow shaft 41, and a center disposed concentrically within the inner hollow shaft 42. And a shaft 43. A bearing 44a that rotatably supports the outer winding core 3 is attached to the tip (left end in FIG. 2) of the outer hollow shaft 41. A bearing 44b is fitted and fixed in the rear end of the outer hollow shaft 41. A spline (not shown) is formed on the inner peripheral surface of the bearing 44b. The rear end (right end in FIG. 2) of the outer winding core 3 is fitted and fixed in the front end (left end in FIG. 2) of the inner hollow shaft 42. Note that the outer hollow shaft 42 and the outer winding core 3 may be integrally formed. The rear end portion 421 of the outer hollow shaft 42 has a large diameter, and a stopper plate 45 is detachably attached to the rear end surface. Although not shown, a spline extending from a shoulder portion 422 of the rear end portion 421 to substantially the center of the outer hollow shaft 42 is formed on the outer periphery of the outer hollow shaft 42. This spline meshes with the spline of the bearing 44b, and the outer hollow shaft 41 and the inner hollow shaft 42
And are simultaneously rotated, but allow the inner hollow shaft to move axially relative to the outer hollow shaft.

The inner winding core 2 is coaxially and integrally formed at the tip of the central shaft 43. The rear end of the central shaft 43 is the inner hollow shaft 4
It is rotatably supported by a bearing 46 that is fitted and fixed in the rear end of 2. Near the rear end of the central shaft 43, a pair of grooves 431 is formed at diametrically symmetric positions. At the rear end 421 of the inner hollow shaft 42, a hole penetrating in the radial direction is formed at a position axially aligned with the groove 431 of the central shaft 43, and a detent mechanism 47 is mounted in the hole. As shown in detail in FIG. 7, the rotation preventing mechanism includes a case 471, a spring 472 in the case 471, and a ball 47 pressed by the spring 472 toward the center shaft 43.
When the ball 473 engages with the groove 431 of the central shaft, the central shaft 43 and the inner hollow shaft 42 rotate simultaneously, and therefore, the inner core 2 and the outer core 3 rotate simultaneously. ing. The outer periphery 412 of the rear end portion 411 of the outer hollow shaft 41 is knurled. The core support mechanism 4 further has a core receiver 48 arranged on the leading end side of the core. The core receiver 48 includes a support 481 and a support shaft 4 that is rotatably supported on the support by the same axis as the core.
82, and a conical surface is formed at the tip of the support shaft. The tip having the conical surface is inserted into the tip of the outer core 3. The core receiver 48 prevents the tip of the core from swinging. The inner periphery of the stopper plate 45 enters into an annular groove 432 formed in the central shaft 43,
And the central axis 43 are prevented from moving relative to each other in the axial direction.
As shown in FIG. 8, a concave portion 433 extending in the diameter direction is formed on the rear end surface of the central shaft 43.

The first drive mechanism 5 is attached to a drive motor 51 having a rotation shaft 52 having a rotation center O-O of the turret 10 as a rotation center and a rotation shaft 52 of the drive motor, and has an outer hollow outer circumference. The drive wheel 53 is in contact with the outer circumference 412 of the shaft 41. The drive wheel is made of an elastic material such as rubber and transmits the rotation to the outer hollow shaft by frictional force. In addition, the outer circumference 4 of the rear end portion 411 of the outer hollow shaft 41
12 is a stopper lever 5 rotatably mounted on the outer periphery of the turret 10 and resiliently pressed by a spring 57.
6 (right end in FIG. 2) so as to hold the outer hollow shaft 41 and thus the inner core 2 and the outer core 3 against rotation with respect to the turret. When the stopper lever 56 is pushed to the side opposite to the spring by the release cylinder 58 provided outside, the stopper lever 56 is disengaged from the outer periphery 412 of the outer hollow shaft 41 so that the outer hollow shaft can freely rotate.

The second drive mechanism 6 includes a support member 61 disposed at a rear portion (right side in FIG. 1) of the turret 10.
It has a hollow shaft 63 rotatably supported coaxially with the central shaft 43 by a pair of bearings 62, and an operation shaft 64 penetrating through the hollow shaft 63. As shown in detail in FIG. 3, bearings 65a and 65b are fitted and fixed to both ends of the hollow shaft 63. A spline (not shown) is formed on the inner periphery of the bearing 65b, and the spline is the operation shaft 6
4 is engaged with a spline (not shown) formed on the outer periphery of the rear half (right half in FIG. 3) of 4, and the rotation of the hollow shaft 63 is transmitted to the operation shaft 64, but only the operation shaft is axially independent. I am able to move to. A gear 632 is formed on the outer periphery of the flange 631 at the rear end of the hollow shaft 63, and the gear 632 meshes with the drive gear 66 rotated by a known means.

As shown in FIG. 2, a cylindrical member 67 is attached to the outside of the vicinity of the tip of the operating shaft 64. The cylindrical member 67 is axially movable and rotatable with respect to the operation shaft 64. A thrust bearing 68 is attached to the rear of the cylindrical member 67. The cylindrical member 67 is elastically pressed to the distal end side (left side in FIG. 3) by a spring 70 disposed between a thrust bearing 68 and a spring bearing 69 attached to the operation shaft. This cylindrical member can move until it comes into contact with a stopper ring 71 attached to the operation shaft 64. As shown in FIG. 8, the distal end surface of the operation shaft 64 has a diametrically extending convex portion 6 that fits in a concave portion 433 formed in the rear end surface of the central shaft 43.
41 are formed. At the rear end of the operation shaft 64, a collar 7 is provided.
2 are installed. This collar is the swing lever 73
And the operating shaft 64 is moved in the axial direction by the rocking lever. In FIG. 2, 92
Is a sensor for detecting the rotation of the detection plate 91 attached to the outer hollow shaft 41 to detect the rotation of the outer hollow shaft.

The operation of the winding device having the above structure will be described with reference to FIGS. 4 and 9. When the winding device 1 is supported by the turret 10 and is moved to the position S by the rotation of the turret in the counterclockwise direction (in FIG. 4), first, the operating shaft 64 moves the swing lever 73 by a predetermined angle in the clockwise direction. Rotating backward (right in FIG. 1)
The spring bearing 69 is moved to the tip of the hollow shaft 63 (see FIG. 3).
(At the left end) It has stopped in a close state. On the other hand, the stopper plate 45 attached to the rear end of the inner hollow shaft 42 of the core support mechanism 4 is moved rearward by the pulling member 75 (see FIGS. 1 and 3).
The inner hollow shaft 42 is pulled to the right side), so that the distal end of the outer core 3 fixed to the inner hollow shaft 42 reaches the position of the left end surface of the bearing 44a, and the center shaft 43 is connected to the inner core 2 formed integrally therewith. Is simultaneously retracted to a position where it is retracted from the end face of the bearing 44a. The outer core 3 is stopped in a state where the slits 32 are horizontally arranged by the stopper lever 56 fixing the outer hollow shaft 41.

The plurality of electrode foils f and the separators s to be wound are supplied to the front of the winding device as shown in FIG. 4 along a horizontal plane passing through the axis of rotation of the winding core in a stacked state. . The inner winding core 2 has a front winding portion 31 at a position shown in FIG. 5A with respect to the outer winding core 3. Then, in this state, the swing lever 73 rotates in the counterclockwise direction and the operation shaft 64 moves forward (see FIGS. 1 and 3).
Then, the tip end surface (left end surface) of the cylindrical member 67 contacts the stopper plate 45 to move the inner hollow shaft 42 and the central shaft 43 of the core support mechanism 4 to the left at the same time. At this time, if the convex portion 641 at the front end of the operation shaft 64 and the concave portion 433 at the rear end surface of the central shaft 43 are exactly aligned, the convex portion immediately enters the groove, but if both are not aligned, The tip of the operating shaft and the central shaft 43 are kept in a state where the projection does not enter the recess.
When the operating shaft is slightly turned, the two are aligned and fitted to each other. Accordingly, the inner core 2 and the outer core 3 also move to the left at the same time.
As shown in (2), the electrode foil and the separator are put in a slit 31 formed in the outer core 3. At this time, since the distal end surface of the outer core 3 is an inclined surface inclined toward the slit side, the tape-like component smoothly enters the slit.
The support shaft 482 of the core receiver 48 is provided in the tip of the outer core.
The tip of the core enters slightly to prevent the tip of the winding core from shaking.

Next, when the hollow shaft 63 is rotated by the drive gear 66, the operation shaft 64 is also rotated by about 180 °. On the other hand, the stopper lever 56 of the core support mechanism 4 is
Since the outer hollow shaft 42 is engaged with the outer circumference 412 of the first shaft to prevent the outer hollow shaft from rotating, the inner hollow shaft 42 is also prevented from rotating. Therefore, the ball 473 of the rotation stopping mechanism 47 is disengaged from the one groove 431 of the central shaft 43, and the central shaft together with the inner winding core 2 moves about 1
The rotation of the operating shaft 64 is stopped when the ball 473 rotates by 80 ° and enters the other groove on the diametrically opposite side. When the inner winding core 2 is rotated by 180 ° with respect to the outer winding core 3 as described above, the electrode foil f and the separator s passed through the slit 31 of the outer winding core 3 are separated from each other as shown in FIGS. 4B and 9B. The electrode foil and the separator are sandwiched between the arcuate outer surface of the inner winding core 2 and the inner surface of the inner winding core 3, as shown in FIG. When the clamping of the electrode foil and the separator is completed, the swing lever 73 of the second drive mechanism 6 rotates clockwise to retreat the operation shaft (FIG. 3).
To the right). Therefore, the central shaft 43 and the operating shaft 6
The connection with 4 is disconnected. Further, the release cylinder 58 pushes the stopper lever 56 to release the engagement between the stopper lever and the outer periphery 413 of the outer hollow shaft 41 so that the outer hollow shaft can freely rotate. In this state, the drive motor 51 of the first drive mechanism 4 rotates a little, and the outer hollow shaft 41, the inner hollow shaft 42, and the center shaft 43 are integrated, and thus the inner core 2 and the outer core 3 are integrated. In step 4, the film is wound about one turn in the counterclockwise direction (FIG. 9C). Then, the operation of the release cylinder 58 is stopped, and the outer hollow shaft 41 is fixedly held by the stopper lever 56.

Next, the turret is rotated about 90 ° in the counterclockwise direction in FIG. 4 to hold the electrode foil and the separator between the inner core 2 and the outer core 3 and to take up a part of the winding device. Move to T position. At this time, the tape-shaped component moves while being pulled out from the supply mechanism 8. When the winding device 1 stops at the position T, the release cylinder 58 pushes the stopper lever 56 and the stopper lever and the outer circumference 41 of the outer hollow shaft 41.
3 so that the outer hollow shaft can rotate freely. When the drive motor 51 rotates in this state, the outer hollow shaft 41, the inner hollow shaft 42, and the center shaft 43 are rotated together, and therefore, both the inner core 2 and the outer core 3 are rotated counterclockwise in FIG. At first, it rotates by an angle corresponding to the winding amount. Then, the tape-shaped component is wound around the outer core 3 from the state of FIG. 9C to the state of FIG. 9D. When the winding is completed, the operation of the release cylinder 58 is stopped and the stopper lever 56 moves the outer circumference 41 of the outer hollow shaft 41.
3, the outer hollow shaft 41, the inner hollow shaft 42 and the central shaft 4
The rotation of 3 is blocked, and the cutter 81 operates to cut.

When the winding of the predetermined length is completed, the turret 10 rotates counterclockwise by about 90 °, and the corresponding cores 2 and 3 and the core supporting mechanism 4 are moved to the position U. Adhesive tape in the same way as before (not shown)
Fixes the end of the tape. 9 more turrets
When the cores 2 and 3 and the core support mechanism 4 reach the position V by rotating in the counterclockwise direction by 0 °, the operating shaft 64 advances as before and the end face of the cylindrical member 67 is moved. The convex portion 641 at the tip of the operation shaft 64 that comes into contact with the stopper plate 45 enters the concave portion 433 of the central shaft 43. And the operating shaft 64 is 180
The rotation by 180 ° rotates only the central shaft 43 and the inner core 2 by 180 °. Then, the holding of the tape-shaped component by the inner core and the outer core is released as shown in FIG. 9D, and the core can be easily removed. That is, FIG.
As shown in [B] and [C], when the electrode foil and the separator are sandwiched, the electrode foil or the separator is bent along the inner surface of the outer winding core at the edge of the slit of the outer winding core and the edge thereof is bent. 9D, but when the gripping is released as shown in FIG. 9D, such bending is loosened, so that extraction becomes easy. In this state, the tension member 7
5 moves to the left in FIG. 2 to move the inner hollow shaft 42 and the center shaft 43 to the left via the stopper plate 45, thereby retracting the inner and outer cores 2 and 3. Thus, the core is disengaged from the wound tape-shaped component.

Hereinafter, winding is performed in the same manner. In addition,
The second drive mechanism 6 is separately disposed at a fixed position behind the turret 10 (right side in FIG. 1) at the positions S and V in FIG. 4, and is rotated together with the core support mechanism by the rotation of the turret. Not something to do. Also, the core receiver 4
8 are separately arranged at fixed positions in front of the turret 10 at the positions S and T in FIG. 4, and do not rotate together with other core support mechanisms attached to the turret. Furthermore, it is the rear end of the separator that is cut by the cutter 81, and the two electrode foils are cut by the cutters 82 and 83, respectively, in the same manner as in the conventional operation of manufacturing a battery element.

5, 9 and 1 during the description of the above embodiment.
At 0, the electrode foil and the separator are shown by one line for simplicity of the drawing, but it goes without saying that the electrode foil and the separator are alternately stacked two by two. Further, although the cross-sectional shape of the winding portion 21 of the inner core 2 in the above embodiment is semicircular, FIG.
Even the shapes shown in [A] and [B] can achieve the initial purpose. In short, the winding part 21
Is positioned off-center with respect to the center of rotation of the winding core, and cannot hold the tape-shaped part at a certain position.
It is sufficient that the tape-shaped component can be sandwiched between the winding portion and the outer winding core in the state of being rotated by 80 °. Also, when the inner and outer diameters of the wound product are large and the inner and outer winding cores are also large and the rigidity of the product itself is large and there is no problem with shaking at the tip, there is no need to provide a core holder. .

[0024]

According to the present invention, the following effects can be obtained. (1) There is no tape-shaped component extending in the diametrical direction at the center of the product formed by winding the tape-shaped component, and when applied to wind the battery element, a welding rod to the center of the battery element. Can be easily inserted, which facilitates automation of manufacturing. (2) The inner core and the outer core are made into a double structure to rotate one side relative to the other so as to hold the tape-shaped component at the beginning of winding, and after the winding is completed, rotate the both again. Since the pinch is released, the core can be easily removed from the product and the product is not damaged. (3) The tape-shaped component and the winding core are prevented from slipping, and the winding can be performed accurately.

[Brief description of drawings]

FIG. 1 is a side view of an embodiment of a tape-shaped component winding device according to the present invention.

FIG. 2 is an enlarged cross-sectional view of a portion A of the winding device in FIG.

FIG. 3 is an enlarged sectional view of a part B of the winding device of FIG. 1;

FIG. 4 is a schematic view of the turret as viewed from the front.

5 is an enlarged cross-sectional view taken along the line C-C in FIG. 2, in which [B] is a diagram showing a state in which the inner winding core is in an operation position different from that in [A].

FIG. 6 is an enlarged sectional view of the tip of the inner and outer winding cores.

7 is a cross-sectional view taken along the line D-D in FIG. 2 and is an enlarged cross-sectional view showing a detent mechanism provided in the core support mechanism.

FIG. 8 is a view taken along line EE in FIG. 2;

FIG. 9 is a diagram illustrating a winding operation by the device of the present invention.

FIG. 10 is an end view of a tape-shaped component wound by the winding method of the present invention.

FIG. 11 is a cross-sectional view showing a modified example of the shape of the winding portion of the inner core.

FIG. 12 is a view showing a structure of a conventional core.

FIG. 13 is a view showing an article wound using the winding core shown in FIG. 12;

FIG. 14 is a cross-sectional view showing a welding operation of the element lead and the case in the battery.

FIG. 15 is a diagram illustrating another conventional winding method.

[Explanation of symbols]

 1 Tape-shaped component winding device 2 Inner winding core 21 Winding portion 3 Outer winding core 31 Winding portion 32 Slit 4 Winding core support mechanism 41 Outer hollow shaft 42 Inner hollow shaft 43 Center shaft 5 First drive mechanism 51 Drive Motor 53 Roller 6 Second drive mechanism 64 Operation axis

Claims (4)

[Claims] 1. An inner winding core having a winding portion which is disposed offset with respect to a center of rotation inside a sleeve-shaped outer winding core having a slit extending in a diameter direction so as to be relatively rotatable with respect to the outer winding core. After arranging, passing the tape-shaped component through the slit, the inner core is rotated at a desired angle with respect to the outer core, and the tape-shaped component is sandwiched between the winding portion of the inner core and the outer core. Thereafter, the two cores are simultaneously rotated to wind the tape-shaped component around the core, and then the inner core is rotated relative to the outer core by a desired angle to release the tape-shaped component from being held. The method of winding a tape-shaped component. 2. A core structure for winding a tape-shaped component, wherein a sleeve-shaped outer core having a slit extending in a diametrical direction is formed, and the inner core is rotatable relative to the outer core with respect to the outer core. An inner winding core having a winding portion arranged so as to be rotatable with the outer winding core and being offset with respect to the center of rotation, wherein the outer core and the winding portion of the inner winding core form a tape-like component. Core structure to hold. 3. A winding device for winding a tape-shaped component, wherein a sleeve-shaped outer winding core having slits extending in a diametrical direction is formed, and the inner winding of the outer winding core is relatively rotatable with respect to the outer winding core. An inner winding core, which is arranged so as to be rotatable together with the outer winding core and has a winding portion which is arranged offset with respect to the center of rotation, and concentrically so that the inner and outer winding cores can be rotated relative to each other and simultaneously. A core supporting mechanism that supports the core and a first core that simultaneously rotates the inner and outer cores.
And a second drive mechanism for rotating the inner core independently and moving the inner and outer cores in the axial direction. 4. The winding device according to claim 3, wherein the first drive mechanism is arranged concentrically with an outer hollow shaft rotatably supported by a turret and inside the outer hollow shaft. And an inner hollow shaft that rotates with the outer hollow shaft, but is relatively movable in the axial direction with respect to the outer hollow shaft, and that is disposed inside the inner hollow shaft and can relatively rotate with respect to the inner hollow shaft. And a central shaft that can rotate together, the inner winding core being connected to an end of the central shaft, and the outer winding core being connected to an end of the inner hollow shaft.