JPH0639858U - Lithium tape reel - Google Patents

Abstract

(57) [Abstract] [Purpose] To facilitate winding and prevent winding misalignment without the inconvenience of foreign matter. A lithium tape reel comprising a cylindrical portion around which a lithium tape is wound, and two disk-shaped members provided at opposite ends of the cylindrical portion so as to face each other,
On the side surface of the cylindrical portion around which the lithium tape is wound, a concavo-convex shape for enhancing the adhesiveness or frictional force between the side surface and the lithium tape in contact with the side surface is provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a reel for a lithium tape which facilitates winding of the lithium tape and prevents winding deviation, winding disorder, and winding of the rolled lithium tape during transportation.

[0002]

[Prior art]

 Lithium, which is used as a material for batteries and the like, is wound into a tape on a reel, wrapped, and transported.

FIG. 2A is a front view of such a conventional lithium tape reel, and FIG. 2B is a side view thereof. This lithium tape reel 1 is composed of a cylindrical portion 3 around which a lithium tape 2 is wound, and a pair of disks 4a and 4b fixed to both ends of the cylindrical portion 3 to protect the wound lithium tape 2. Has been done. When the lithium tape 2 is wound around the cylindrical portion 3, the reel 1 is used by inserting it into a lithium tape rolling machine or a winding shaft of an extruder. By winding the lithium tape 2 around the reel 1 in this manner, the lithium tape 2 is protected by the disks 4a and 4b, and damage during transportation is prevented. The wound lithium tape is usually packed and transported in a laminated bag with an inert gas such as Ar gas in order to prevent the reaction with moisture.

FIG. 3 is a cross-sectional view of a lithium tape reel according to another conventional example. In this reel 11 for lithium tape, with the disks 13 and 15 removed, the lithium tape 2 is wound around one end of the cylindrical portion 12 and wound, and the cylindrical portion 12 is placed on the disk 13 with the lithium tape side facing down. , The disk 15 is placed on it, and the disk 15 and the cylindrical portion 12 are fixed to the disk 13 by screwing with a bolt 14 to a flanged nut fixed to the central portion of the disk 13. Is configured. The disk 13 has a tray-like shape whose peripheral portion is curved in the direction of the disk 15. According to this, the lithium tape 2 is supported on the entire surface of the disk 13, and the gap between the disk 13 and the lithium tape 2 can be eliminated. For this reason, it is said that by placing the disk 13 down, the lithium tape 2 will not be misaligned, rolled up, or disturbed even if there is vibration during transportation. That is, in this reel, it is intended to protect the lithium tape 2 with the disks 13 and 15 to prevent winding misalignment during transportation.

[0005]

[Problems to be solved by the device]

 However, according to these conventional reels, when winding the lithium tape, the reel is wound around the cylindrical portion by utilizing the adhesiveness which is not so strong that the lithium tape originally has, and therefore the winding is not easy. In addition, there is a problem in that winding and misalignment, winding disorder, and the like as shown in FIG. 4 may occur due to vibrations during transportation, which may damage the lithium tape.

In order to prevent this, there is a method of adhering the lithium tape and the cylindrical portion with an adhesive tape or the like, but it is not preferable because foreign matter may be mixed in at the time of rewinding during battery manufacturing or the like.

In view of the above problems of the prior art, an object of the present invention is to facilitate winding and prevent winding misalignment in a reel for a lithium tape without inconvenience such as mixing of foreign matter. .

[0008]

[Means for Solving the Problems]

 In order to achieve this object, the present invention provides a reel for lithium tape comprising a cylindrical portion around which a lithium tape is wound, and two disk-shaped members provided at opposite ends of the cylindrical portion so as to face each other. The side surface of the cylindrical portion around which the lithium tape is wound is provided with an uneven shape that enhances the adhesiveness between the side surface and the lithium tape in contact with it.

[0009]

[Action]

 In this configuration, when the lithium tape is wound, due to the uneven shape of the cylindrical portion, the lithium tape is more likely to be wound between the lithium tape and the cylindrical portion, or between the inner lithium tape and the outer lithium tape. High stickiness or friction force is generated and maintained as a whole. Moreover, since it can be wound tightly, the adhesiveness or frictional force is further enhanced. Therefore, the winding of the lithium tape is performed easily and smoothly, and the lithium tape wound around the reel is less likely to be displaced by vibration during transportation, and winding misalignment, winding disorder, damage, etc. are prevented. .

[0010]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a front view of a reel for lithium tape according to an embodiment of the present invention and an enlarged view of its cylindrical portion. As shown in the figure, this reel for lithium tape comprises a cylindrical portion 5 around which a lithium tape is wound, and two disk-shaped members 6 and 7 provided at opposite ends of the cylindrical portion 5 so as to face each other. On the side surface of the cylindrical portion 5 around which the lithium tape is wound, there is an uneven shape that enhances the adhesiveness between the side surface and the lithium tape in contact with it, as shown enlarged in circles 8 to 10. .

The concavo-convex shape shown in the circle 8 is a shape in which slanting grid grooves are provided on the side surface of the cylindrical portion 5. The inside of the circle 9 has a ridge shape or a plurality of grooved grooves extending in the axial direction of the cylindrical portion 5. The circle 10 has a plurality of hemispherical protrusions.

Note that the uneven shape may be one that enhances the adhesiveness or the frictional force between the lithium tape and the cylindrical portion 5, and need not be a regular shape as shown in the circles 8 to 10. . The number of ridges, protrusions, etc. may be any number, but is preferably 5 or more.

According to this, in the past, since the lithium tape was wound around the cylindrical portion by utilizing the inherent adhesiveness of lithium metal, sufficient adhesiveness was not obtained and winding was not easy. Since the concavo-convex shape of the cylindrical portion 5 gives good adhesiveness in addition to the original adhesiveness, winding can be performed easily and winding misalignment, winding disorder, damage, etc. are effectively prevented. can do.

[0014]

[Effect of device]

 As described above, according to the present invention, winding of a lithium tape can be facilitated without inconvenience such as inclusion of foreign matter, and winding deviation, winding disorder, and winding can be prevented.

[Brief description of drawings]

FIG. 1 is a front view of a lithium tape reel according to an embodiment of the present invention and an enlarged view of a cylindrical portion thereof.

FIG. 2 is a front view and a side view of a lithium tape reel according to a conventional example.

FIG. 3 is a cross-sectional view of a lithium tape reel according to another conventional example.

FIG. 4 is a schematic view showing an example of winding deviation, winding, winding disorder, etc., which is caused by vibration during transportation when the reel of FIG. 3 is used.

[Explanation of symbols]

2: Lithium tape, 3, 5, 12: Cylindrical part, 4a, 4
b, 6, 7, 13, 15: disk, 14: bolt.

Claims (1)

[Scope of utility model registration request] 1. A cylindrical portion around which a lithium tape is wound, and 2 provided at opposite ends of the cylindrical portion so as to face each other.
In a reel for lithium tape provided with two disk-shaped members, on the side surface around which the lithium tape of the cylindrical portion is wound,
A reel for lithium tape, characterized in that it is provided with an uneven shape that enhances the adhesiveness or the frictional force between the side surface and the lithium tape contacting it.