Wire reel

Abstract

To provide a wire reel which can be easily assembled and whose number of parts can be reduced.SOLUTION: A wire reel 1 includes a winding drum 21 for winding a superconducting wire L, a right flange plate 22 and a left flange plate 23 provided at the axial ends of the winding drum 21, a first member 11 which is formed integrally with the right flange plate 22 and a first winding drum forming portion 24 that forms half of the winding drum 21, and a second member 12 which is formed integrally with the left flange plate 23 and a second winding drum forming portion 25 that forms half of the winding drum 21.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a wire reel. [Background technology]

[0002] There is a wire reel for winding a superconducting wire that includes a winding core around which the superconducting wire is wound and a pair of side plates joined to both axial ends of the winding core (see Patent Document 1). This wire reel is configured to prevent the superconducting wire wound around the winding core from coming off the winding core by including the pair of side plates. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2021-11375 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in this type of wire reel, the winding core and the pair of side plates are formed separately and are assembled by fastening them together, which has the problem of making the assembly work complicated and increasing the number of parts.Furthermore, a mold for manufacturing the wire reel must be prepared for each part, which has the problem of increasing manufacturing costs.

[0005] Therefore, one object of the present invention is to provide a wire reel that can be easily assembled and that requires fewer parts, and another object of the present invention is to provide a wire reel that requires fewer dies to manufacture the wire reel. [Means for solving the problem]

[0006] A wire reel according to one embodiment of the present invention is characterized by comprising a winding drum for winding superconducting wire, a first flange plate and a second flange plate arranged at the axial end of the winding drum, a first member formed integrally with the first flange plate and a first winding drum forming portion that forms one half of the winding drum, and a second member formed integrally with the second flange plate and a second winding drum forming portion that forms the other half of the winding drum. [Effects of the Invention]

[0007] According to one embodiment of the present invention, it is possible to provide a wire reel that can be easily assembled and that can reduce the number of parts. Furthermore, according to one embodiment of the present invention, it is possible to provide a wire reel that can reduce the number of molds required to manufacture the wire reel. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a perspective view showing a wire reel according to an embodiment of the present invention; [Figure 2] FIG. [Figure 3] FIG. [Figure 4] FIG. 2 is an exploded perspective view showing the wire reel. [Figure 5] FIG. 2 is a front view showing the first member. [Figure 6] FIG. 4 is a right side view showing the first member. [Figure 7] FIG. 4 is a left side view showing the first member. [Figure 8] 4 is a cross-sectional view taken along line A-A' in FIG. 3, showing the wire reel. [Figure 9] 4 is a cross-sectional view taken along line BB' in FIG. 3, showing the wire reel. [Figure 10] FIG. 4 is a front view showing the second member. [Figure 11] FIG. 10 is a right side view showing the second member. [Figure 12] FIG. 4 is a left side view showing the second member. [Figure 13] FIG. 1 is a first explanatory diagram showing a method of assembling a wire reel. [Figure 14] FIG. 2 is a second explanatory diagram showing a method of assembling a wire reel. [Figure 15] FIG. 3 is a third explanatory diagram showing a method of assembling a wire reel. [Figure 16] FIG. 1 is a first explanatory diagram showing a method of winding a superconducting wire around a wire reel. [Figure 17] FIG. 2 is a second explanatory diagram showing a method of winding a superconducting wire around a wire reel. [Figure 18] FIG. 3 is a third explanatory diagram showing a method of winding a superconducting wire around a wire reel. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, a wire reel according to one embodiment of the present invention will be described with reference to the accompanying drawings. This wire reel winds a tape-shaped superconducting wire so that it can be unwound. In particular, this wire reel is composed of two members, which improves assembly ease while reducing the number of parts. Note that the following description will be given by defining left and right (X1, X2), front and back (Y1, Y2), and top and bottom (Z1, Z2) as shown in each drawing.

[0010] (Wire reel configuration) 1 to 4, the wire reel 1 is a reel member comprising a winding drum 21 around which the superconducting wire L is wound, and a right flange plate 22 and a left flange plate 23 disposed at both axial ends of the winding drum 21, and is provided with a right-side first member 11 formed integrally with the right flange plate 22 and a first winding drum forming portion 24 that forms one half of the winding drum 21, and a left-side second member 12 formed integrally with the left flange plate 23 and a second winding drum forming portion 25 that forms the other half of the winding drum 21. In other words, the wire reel 1 is composed of only two members, the first member 11 and the second member 12. The right flange plate 22 is an example of a first flange plate, and the left flange plate 23 is an example of a second flange plate.

[0011] The superconducting wire L is a tape-shaped material obtained by forming layers including a superconducting layer on a long substrate. The superconducting wire L is mainly available in three widths: 4 mm, 6 mm, and 12 mm. In this embodiment, a superconducting wire L having a width of 4 mm is wound around the wire reel 1. That is, the wire reel 1 in this embodiment is a wire reel 1 for a superconducting wire L having a width of 4 mm.

[0012] 5 to 7, first member 11 is formed by injection molding of a resin material, and right flange plate 22 and first winding drum forming portion 24 are integrally formed on the same axis. Also, hole portion 26a forming one half of axial hole 26 is formed in the center of first member 11. Note that first member 11 is preferably transparent or translucent so that the state of superconducting wire L wound around winding drum 21 can be confirmed.

[0013] The right flange plate 22 has a right flange plate main body 31 formed in a disk shape, two arc-shaped protrusions 32, one at the front and one at the back, protruding from the right surface of the right flange plate main body 31, and two upper and lower operation holes 33 opening in the right flange plate main body 31. Details of the operation holes 33 will be described later. The right flange plate main body 31 has a thickness of 2.8 mm to 3.2 mm (preferably 3 mm) to increase the strength of the entire wire reel 1. Furthermore, it is preferable that gate marks formed when the first member 11 is injection molded be formed on the right surface of the right flange plate main body 31.

[0014] Each arc-shaped protrusion 32 protrudes rightward from the right surface of the right rib plate main body 31 and extends in an arc shape along the circumferential direction of the right rib plate main body 31. As shown in FIGS. 6 and 8, two holes (through holes) 34 for passing the fastening screws B1 and B2 are formed at the position of each arc-shaped protrusion 32. That is, each arc-shaped protrusion 32 functions as a counterbore that prevents the head of the fastening screw B1 from protruding (protruding). Each arc-shaped protrusion 32 protruding rightward from the right surface of the right rib plate main body 31 also functions as a spacer that forms a space between the wire reels 1 when multiple wire reels 1 are stacked or lined up. That is, the arc-shaped protrusion 32 is an example of a spacer that protrudes from the surface opposite the reel drum 21. The thickness (height in the left-right direction) of each arc-shaped protrusion 32 is, for example, 2.5 mm.

[0015] 5, 7, and 9, the first reeling drum forming section 24 has a disk-shaped reeling drum forming section main body 41, an engaging protrusion 42 provided in a protruding position on the upper left surface of the reeling drum forming section main body 41, an engaging recess 43 provided in a recessed position on the lower left surface of the reeling drum forming section main body 41, and two upper and lower grooves 44, 44 formed in the reeling drum forming section main body 41 and forming one half of a slit 27 described below. As will be described in detail later, the engaging protrusion 42 of the first member 11 engages with the engaging recess 63 of the second member 12, and the engaging protrusion 62 of the second member 12 engages with the engaging recess 43 of the first member 11, thereby temporarily fixing the second member 12 to the first member 11.

[0016] As shown in Figures 10 to 12, second member 12 is formed by injection molding of a resin material, and left flange plate 23 and second winding drum forming portion 25 are integrally formed on the same axis. Furthermore, hole portion 26b forming the other half of axial hole 26 is formed in the center of second member 12. First member 11 and second member 12 have the same shape and are configured so that they can be injection molded using the same mold. Note that, like first member 11, second member 12 is preferably transparent or translucent so that the state of superconducting wire L wound around winding drum 21 can be confirmed.

[0017] The left flange plate 23 has a left flange plate main body 51 formed in a disk shape, two arc-shaped protrusions 52, one at the front and one at the back, protruding from the left surface of the left flange plate main body 51, and two upper and lower operation holes 53 opening in the left flange plate main body 51. Details of the operation holes 53 will be described later. Like the right flange plate main body 31, the left flange plate main body 51 has a thickness of 2.8 mm to 3.2 mm (preferably 3 mm) in order to increase the strength of the entire wire reel 1. Furthermore, it is preferable that gate marks, which are formed when the second member 12 is injection molded, are formed on the left surface of the left flange plate main body 51.

[0018] Each arc-shaped protrusion 52 protrudes leftward from the left surface of the left rib plate body 51 and extends in an arc shape along the circumferential direction of the left rib plate body 51. As shown in FIGS. 8 and 11 , two holes (through holes) 54 for passing the fastening screws B1 and B2 are formed at the position of each arc-shaped protrusion 52. That is, each arc-shaped protrusion 52 functions as a counterbore that prevents the head of the fastening screw B2 from protruding (protruding). Each arc-shaped protrusion 52 protruding leftward from the left surface of the left rib plate body 51 also functions as a spacer that forms a space between the wire reels 1 when multiple wire reels 1 are stacked or lined up. That is, the arc-shaped protrusion 52 is an example of a spacer that protrudes from the surface opposite the reel drum 21. The thickness (height in the left-right direction) of each arc-shaped protrusion 52 is, for example, 2.5 mm.

[0019] 9, 10, and 12, the second reeling drum forming section 25 has a disk-shaped reeling drum forming section main body 61, an engaging protrusion 62 provided in a protruding position on the lower right surface of the reeling drum forming section main body 61, an engaging recess 63 provided in a recessed position on the upper right surface of the reeling drum forming section main body 61, and two upper and lower grooves 64, 64 formed in the reeling drum forming section main body 61 and forming the other half of a slit 27 described below. The engaging protrusion 42 of the first member 11 engages with the engaging recess 63 of the second member 12, and the engaging protrusion 62 of the second member 12 engages with the engaging recess 43 of the first member 11, thereby temporarily fixing the second member 12 to the first member 11.

[0020] (Manufacturing method of wire reels) Next, a method for manufacturing a wire reel according to an embodiment of the present invention will be described. As described above, the first member 11 and the second member 12 constituting the wire reel 1 have the same shape when rotated 180 degrees relative to each other, and can be molded by injection molding or the like of a material such as resin using the same mold. The wire reel 1 is manufactured by preparing the first member 11 and the second member 12 molded from the same mold in this way and combining the first member 11 and the second member 12. As shown in FIGS. 13 to 15, the wire reel 1 is assembled by temporarily fixing the second member 12 to the first member 11 and then fastening the second member 12 to the first member 11 with the fastening screws B1 and B2. In detail, first, as shown in FIG. 14, the engaging protrusions 42 of the first member 11 are engaged with the engaging recesses 63 of the second member 12, and the engaging protrusions 62 of the second member 12 are engaged with the engaging recesses 43 of the first member 11, thereby temporarily fixing the second member 12 to the first member 11. As a result, the second member 12 is fixed in position relative to the first member 11 in the circumferential direction and in the up-down, front-rear directions. Thereafter, as shown in FIG. 15, the second member 12 is fastened (screwed) to the first member 11 with the fastening screws B1 and B2. As a result, the wire reel 1 is assembled.

[0021] In the state where the wire reel 1 is assembled by fastening the second member 12 to the first member 11, the first reel forming portion 24 of the first member 11 and the second reel forming portion 25 of the second member 12 form the reel 21, and the hole 26a of the first member 11 and the hole 26b of the second member 12 form the axial hole 26. In addition, the dimension of the gap between the right flange plate 22 and the left flange plate 23 is adjusted to a dimension that matches the width of the superconducting wire L (a dimension that is slightly larger than the width of the superconducting wire L).

[0022] In the winding drum 21 formed by the first winding drum forming section 24 and the second winding drum forming section 25, two slits 27, one above the other, are formed by the groove 44 in the first member 11 and the other by the groove 64 in the second member 12. Each slit 27 is an attachment hole for attaching an end of the superconducting wire L, and has a dimension that allows the end of the superconducting wire L to be inserted therein.

[0023] 1 and 3, each operation hole 33, 53 is an opening for inserting the end of the superconducting wire L into the slit 27, and is formed in a circular shape at a position facing the edge of the slit 27. The size of each operation hole 33, 53 is large enough to allow the thumb F1 and index finger F2 of an operator to be inserted simultaneously, and the diameter is preferably 46 mm or more. Such operation holes 33, 53 allow the end of the superconducting wire L to be directly grasped between the thumb F1 and index finger F2 and inserted into the slit 27.

[0024] (Method of winding superconducting wire around wire reel) When winding the superconducting wire L around the wire reel 1, first, as shown in FIG. 16, the tip of the superconducting wire L is inserted between the right flange plate 22 and the left flange plate 23, and the tip is moved to the position of the operation holes 33, 53. Next, as shown in FIG. 17, the thumb F1 and index finger F2 are inserted through the operation holes 33, 53, and the tip of the superconducting wire L is directly grasped and inserted into the slit 27. Thereafter, as shown in FIG. 18, the forefinger F2 presses the front side of the portion of the superconducting wire L inserted into the slit 27 against the winding drum 21, and the wire reel 1 is rotated by a winding device or the like. In this way, the superconducting wire L is wound around the wire reel 1.

[0025] (Actions and Effects of the Embodiments) As described above, according to the configuration of the above embodiment, the wire reel 1 is composed of two members, the first member 11 and the second member 12. This allows the wire reel 1 to be assembled simply by fastening the two members together, making the assembly process easy. Furthermore, compared to a configuration in which the reeling drum 21, the right flange plate 22, and the left flange plate 23 are formed separately, the number of parts can be reduced, thereby reducing the cost of manufacturing the wire reel 1. Furthermore, since there is no need to use custom-made fastening screws B1 and B2 to fasten the first member 11 and the second member 12, and ready-made fastening screws B1 and B2 can be used, the wire reel 1 can be manufactured inexpensively. Furthermore, since the first member 11 and the second member 12 are formed integrally with the flange plates 22 and 23 and the reeling drum forming portions 24 and 25, the flange plates 22 and 23 are not assembled upside down, and even an unskilled worker can assemble the wire reel 1 without making a mistake.

[0026] Furthermore, since the first member 11 and the second member 12 have the same shape, the first member 11 and the second member 12 can be manufactured using the same mold, which further reduces the manufacturing costs of the wire reel 1.

[0027] Furthermore, by forming operation holes 33, 53 facing the edge of slit 27 in right flange plate 22 and left flange plate 23, the end of superconducting wire L can be directly grasped and inserted into slit 27, and the end of superconducting wire L can be easily inserted into slit 27. Furthermore, the front side of the portion of superconducting wire L inserted into slit 27 can be pressed against winding drum 21 with index finger F2, so that the end of superconducting wire L can be prevented from slipping out of slit 27 when wire reel 1 is rotated.

[0028] Furthermore, since the operating holes 33, 53 are formed on both the right flange plate 22 and the left flange plate 23, it becomes easier to operate the end of the superconducting wire L, and the end of the superconducting wire L can be more easily inserted into the slit 27.

[0029] Furthermore, by forming the engaging protrusions 42, 62 and the engaging recesses 43, 63 in the first and second reeling drum forming sections 24, 25, the second member 12 can be temporarily fixed to the first member 11. This eliminates the need to align the screw holes 34, 54 with each other during the fastening work with the fastening screws B1, B2, which is the final fixation, and makes it easy to perform the fastening work with the fastening screws B1, B2.

[0030] Furthermore, by providing the arc-shaped protrusions 32, 52 on the right flange 22 and the left flange 23, it is possible to form a space between the wire reels 1 when a plurality of wire reels 1 are stacked or lined up. This makes it possible to easily remove one wire reel 1 from a plurality of wire reels 1 stored in a stacked or lined up state. Furthermore, since a space can be formed between the right flange plate body 31 of one wire reel 1 and the left flange plate body 51 of another wire reel 1, it is possible to prevent the flange plate bodies 31, 51 from coming into contact with each other, thereby preventing the flange plate bodies 31, 51 from being damaged and / or the superconducting wire L from being damaged.

[0031] (Other embodiments) Although the embodiments of the present invention have been described above, the invention according to the claims is not limited to the above-described embodiments. It should be noted that not all of the combinations of features described in the embodiments are necessarily essential to the means for solving the problems of the invention. The present invention can be implemented by modifying it as appropriate within the scope of its spirit.

[0032] In addition, in the above embodiment, the operation holes 33, 53 have a perfect circular shape, but the shape of the operation holes 33, 53 is not limited to this as long as the shape is such that the operator's fingers can fit in. For example, the shape of the operation holes 33, 53 may be a square, a polygon other than a square, an ellipse, or an oval.

[0033] Furthermore, in the above embodiment, the present invention is applied to the wire reel 1 for a 4 mm wide superconducting wire rod L in which the gap between the right flange plate 22 and the left flange plate 23 is adjusted to the 4 mm wide superconducting wire rod L, but the present invention may also be applied to a wire reel 1 for a 6 mm wide superconducting wire rod L in which the gap between the right flange plate 22 and the left flange plate 23 is adjusted to the 6 mm wide superconducting wire rod L, or to a wire reel 1 for a 12 mm wide superconducting wire rod L in which the gap between the right flange plate 22 and the left flange plate 23 is adjusted to the 12 mm wide superconducting wire rod L.

[0034] Furthermore, in the above embodiment, the present invention is applied to the wire reel 1, but the present invention may also be applied to a reel-wound wire including a superconducting wire L and a wire reel 1 wound with the superconducting wire L. Furthermore, the wire reel 1 of the present invention can also be applied to a tape-shaped wire other than a superconducting wire or a composite tape that is vulnerable to impact.

[0035] Note that, when a technique that does not use a mold, such as a 3D printer, is used to form the first member 11 and the second member 12, it is also possible to employ a configuration in which the first member 11 and the second member 12 have partially different shapes. For example, in the above embodiment, two slits 27 are formed in the winding drum 21, and two operation holes 33, 53 are formed, one above the other, in each of the right tsuba plate 22 and the left tsuba plate 23. However, a configuration in which only one slit 27 is formed in the winding drum 21, and only one operation hole 33, 53 is formed in each of the right tsuba plate 22 and the left tsuba plate 23 may also be employed.

[0036] Furthermore, in the above embodiment, the operation holes 33, 53 are formed in both the right rim plate 22 and the left rim plate 23, but the operation holes 33, 53 may be formed in only one of the right rim plate 22 and the left rim plate 23.

[0037] Furthermore, in the above embodiment, engaging protrusions 42, 62 were formed on both the first reeling drum forming section 24 and the second reeling drum forming section 25, and engaging recesses 43, 63 that engage with the engaging protrusions 42, 62 were formed on both the first reeling drum forming section 24 and the second reeling drum forming section 25. However, it is also possible to have engaging protrusions 42, 62 formed on only one of the first reeling drum forming section 24 and the second reeling drum forming section 25, and engaging recesses 43, 63 formed on only the other of the first reeling drum forming section 24 and the second reeling drum forming section 25.

[0038] (Summary of the embodiment) Next, the technical concepts grasped from the above-described embodiments will be described using the reference numerals and the like in the embodiments. However, the reference numerals and the like in the following description do not limit the components in the claims to the members and the like specifically shown in the embodiments.

[0039] According to a first feature, the wire reel 1 comprises a winding drum 21 for winding the superconducting wire L, a first flange plate 22 and a second flange plate 23 arranged at the axial end of the winding drum 21, a first member 11 formed integrally with the first flange plate 22 and a first winding drum forming portion 24 that forms one half of the winding drum 21, and a second member 12 formed integrally with the second flange plate 23 and a second winding drum forming portion 25 that forms the other half of the winding drum 21. According to a second feature, in the wire reel 1 according to the first feature, the first member 11 and the second member 12 have the same shape. According to a third feature, in the wire reel 1 described in the first or second feature, the winding drum 21 has a slit 27 for attaching an end of the superconducting wire L, and at least one of the first flange plate 22 and the second flange plate 23 has an operating hole 33, 53 facing the slit 27. According to the fourth feature, in the wire reel 1 described in any one of the first to third features, one of the first reel body forming portion 24 and the second reel body forming portion 25 includes an engaging protrusion 42, 62, and the other of the first reel body forming portion 24 and the second reel body forming portion 25 includes an engaging recess 43, 63 that engages with the engaging protrusion 42, 62. According to a fifth feature, in the wire reel 1 described in any one of the first to fourth features, the first flange plate 22 and the second flange plate 23 each include a spacer 32, 52 protruding from the surface opposite the winding drum 21. [Industrial Applicability]

[0040] According to the present invention, it is possible to provide a wire reel that can be easily assembled and that can reduce the number of parts. The present invention can also be applied to wire reels for superconducting wires, as well as wire reels for tape-shaped wires other than superconducting wires and composite tapes that are vulnerable to impacts. [Explanation of symbols]

[0041] 1: Wire reel 11: First member 12: Second member 21: Rolling body 22: Right tsuba plate 23:Left guard plate 24: First winding body forming section 25: Second winding body forming section 27: Slit 32: Arc-shaped protrusion 33: Operation hole 42: Engagement convex part 43: Engagement recess 52: Arc-shaped protrusion 53: Operation hole 62: Engagement convex part 63: Engagement recess L: Superconducting wire

Claims

1. a winding drum (21) for winding a superconducting wire (L); a first flange plate (22) and a second flange plate (23) disposed at axial ends of the winding drum (21); a first member (11) formed by integrally forming the first flange plate (22) and a first winding drum forming portion (24) that forms one half of the winding drum (21); a second member (12) formed by integrally forming the second flange plate (23) and a second winding drum forming portion (25) that forms the other half of the winding drum (21); A wire reel (1) comprising:

2. 2. The wire reel (1) according to claim 1, wherein the first member (11) and the second member (12) have the same shape.

3. 3. The wire reel (1) according to claim 1 or 2, wherein the winding drum (21) includes a slit (27) for attaching an end of the superconducting wire (L), and at least one of the first flange plate (22) and the second flange plate (23) includes an operating hole (33, 53) facing the slit (27).

4. 3. The wire reel (1) according to claim 1 or 2, wherein one of the first reeling drum forming portion (24) and the second reeling drum forming portion (25) includes an engaging protrusion (42, 62), and the other of the first reeling drum forming portion (24) and the second reeling drum forming portion (25) includes an engaging recess (43, 63) that engages with the engaging protrusion (42, 62).

5. 3. The wire reel (1) according to claim 1 or 2, wherein each of the first flange plate (22) and the second flange plate (23) includes a spacer (32, 52) protruding from a surface opposite the winding drum (21).

Images