JP2009295292A - Superconducting wire rod wrapping device and method for manufacturing superconducting wire rod with insulating coating - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a superconducting wire rod wrapping device which is capable of highly efficiently forming an insulating coating; and to provide a method for manufacturing a superconducting wire rod with the insulating coating. <P>SOLUTION: The superconducting wire rod wrapping device includes a supply portion, a wrapping mechanism portion and a winding portion. The wrapping mechanism portion includes an insulating tape reel 38, a guide member 60, and a winding member (rotation body composed of first to third base bodies 35-37, a retaining portion that retains the insulating tape reel 38, rollers 53 and 54 and a position variable roller that guide an insulating tape 39 rewound from the insulating tape reel 38, and insulating tape guides 50 and 51). The insulating tape reel 38 has an opening portion, and the insulating tape 39 is retained by being circumferentially wound so as to surround the opening portion. The guide member 60 guides the superconducting wire rod so as to penetrate the opening portion of the insulating tape reel 38. The rotation body as the winding member winds the insulating tape 39, pulled from the insulating tape reel 38, around the superconducting wire rod. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a superconducting wire wrapping apparatus and a method for manufacturing a superconducting wire with insulation coating, and more specifically to a superconducting wire wrapping apparatus capable of performing insulating coating with high efficiency and a method for manufacturing a superconducting wire with insulation coating.

Conventionally, when forming a magnet by forming an oxide superconducting wire, which is an example of a superconducting wire, into a coil shape, it is known to insulate the oxide superconducting wire in order to prevent a short circuit between the oxide superconducting wires. (See, for example, JP-A-6-234959 (hereinafter referred to as Patent Document 1)). Patent Document 1 discloses that an insulating tape is wound in a spiral shape around the outer periphery of a superconducting wire.
JP-A-6-234959

  As a process of forming a superconducting wire with insulation coating in which the insulating tape as described above is wound around the outer periphery, for example, the reel wound with the insulating tape circulates around the superconducting wire, and the insulating tape is discharged from the reel. Is considered to be wound around the outer periphery of the superconducting wire. However, in such a process, the reel around which the insulating tape is wound circulates around the superconducting wire, so there is a limit to increasing the winding speed of the insulating tape. In other words, when a reel wound with insulating tape is rotated at high speed, a large force is applied to the reel due to centrifugal force.Therefore, due to the mechanical strength of the reel and the members that support the reel, the rotation speed of the reel There was a limit. For this reason, there was a limit in improving the efficiency of the process of forming the superconducting wire with insulation coating.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a superconducting wire wrapping apparatus capable of forming an insulating coating with high efficiency and a superconducting wire with an insulating coating. It is to provide a manufacturing method.

  A superconducting wire wrapping apparatus according to the present invention includes a supply unit, a wrapping unit, and a winding unit. The supply department pays out superconducting wire. The wrapping section winds an insulating tape around the outer periphery of the superconducting wire that has been dispensed from the supply section. The winding unit winds the superconducting wire with insulation coating formed by winding the insulating tape in the wrapping unit. The wrapping portion includes an insulating tape holding member, a guide member, and a winding member. The insulating tape holding member has an opening, and holds the insulating tape wrapped around the circumference so as to surround the opening. The guide member guides the wire so as to penetrate the opening of the insulating tape holding member. The winding member winds the insulating tape delivered from the insulating tape holding member around the wire.

  In this way, since the superconducting wire is arranged so as to penetrate the opening of the insulating tape holding member, when the insulating tape is wound around the superconducting wire, the insulating tape holding member wraps around the superconducting wire. There is nothing to do. That is, the arrangement of the insulating tape holding member is maintained in a state where the superconducting wire passes through the opening of the insulating tape holding member, so that the insulating tape holding member circulates around the superconducting wire. The winding speed of the insulating tape around the superconducting wire is not limited by the mechanical strength of the tape holding member. For this reason, the winding speed of the insulating tape around the superconducting wire can be improved as compared with the case where the insulating tape holding member goes around the superconducting wire. As a result, the step of winding the insulating tape around the superconducting wire can be performed with high efficiency. Therefore, when an oxide superconducting wire is used as the superconducting wire, the process of forming an insulating superconductor wire with an insulating coating by winding an insulating tape around the oxide superconducting wire can be performed with high efficiency.

  In the method of manufacturing a superconducting wire with insulation coating according to the present invention, a step of preparing a superconducting wire is performed. And the process which prepares the insulating tape holding member which has an opening part and wraps and hold | maintains an insulating tape circumferentially so that the said opening part may be enclosed is implemented. The superconducting wire is disposed so as to penetrate the opening of the insulating tape holding member, and the step of winding the insulating tape discharged from the insulating tape holding member around the superconducting wire is performed.

  In this way, since the superconducting wire is disposed so as to penetrate the opening of the insulating tape holding member, in the process of winding the insulating tape, the insulating tape holding member does not circulate around the superconducting wire. Absent. That is, the arrangement of the insulating tape holding member is maintained in a state where the superconducting wire passes through the opening of the insulating tape holding member, so that the insulating tape holding member circulates around the superconducting wire. The winding speed of the insulating tape around the superconducting wire is not limited by the mechanical strength of the tape holding member. For this reason, the winding speed of the insulating tape around the superconducting wire can be improved as compared with the case where the insulating tape holding member goes around the superconducting wire. As a result, the step of winding the insulating tape can be performed with high efficiency. Therefore, the superconducting wire with insulation coating in which the insulating tape is wound around the superconducting wire can be manufactured with high efficiency.

  According to the present invention, the insulating tape can be wound around the oxide superconducting wire with high efficiency.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following drawings, the same or corresponding parts are denoted by the same reference numerals, and description thereof will not be repeated.

  FIG. 1 is a schematic diagram showing a lapping apparatus according to the present invention. FIG. 2 is a schematic perspective view showing the configuration of the first wrapping section of the wrapping apparatus shown in FIG. FIG. 3 is a partially enlarged schematic view of the first wrapping portion shown in FIG. FIG. 4 is a schematic diagram for briefly explaining the configuration of the first wrapping unit shown in FIG. 2. A lapping apparatus 1 according to the present invention will be described with reference to FIGS.

  As shown in FIGS. 1 to 4, a wrapping apparatus 1 according to the present invention includes a supply unit 2, a wrapping mechanism unit 3, a measurement unit 4, a spark tester 5, a control unit 6, a capstan 7, and a width. A thickness measuring unit 8, a scale 9, a height sensor 10, and a winding unit 11 are provided. The supply unit 2 is provided with a plurality (five in FIG. 1) of wire tape reels 21 for supplying the superconducting wire to be covered with the insulating tape to the wrapping mechanism unit 3.

  In the wrapping mechanism portion 3, a first wrapping portion 31 is disposed on the base material. A second wrapping portion 32 is disposed downstream of the first wrapping portion 31. The configuration of the first and second wrapping units 31 and 32 will be described later.

  A first measurement unit 41 including a camera for measuring the pitch and gap of the insulating tape coated on the surface of the superconducting wire is installed on the downstream side of the first wrapping unit 31. A second measurement unit 42 is disposed adjacent to the wrapping mechanism unit 3. Similar to the first measurement unit 41, the second measurement unit 42 includes a camera for measuring the pitch and gap of the insulating tape coated on the surface of the superconducting wire. The first measuring unit 41 and the second measuring unit 42 constitute the measuring unit 4. With this measuring unit 4, the pitch and gap of the insulating tape can be measured over the entire length of the superconducting wire.

  The spark tester 5 is disposed adjacent to (on the downstream side of) the second measurement unit 42. This spark tester 5 is for conducting a dielectric breakdown test on a superconducting wire coated with an insulating tape. With this spark tester 5, it is possible to perform a dielectric breakdown inspection over the entire length of the superconducting wire covered with the insulating tape. As the configuration of the spark tester 5, any inspection device capable of performing a dielectric breakdown inspection can be used.

  A capstan 7 is disposed adjacent to the spark tester 5. The capstan 7 is for adjusting the conveyance speed and tension of the superconducting wire 20. As the configuration of the capstan 7, any configuration can be used as long as the conveyance speed and tension of the superconducting wire 20 can be adjusted. For example, the structure of the capstan 7 may be configured such that the superconducting wire 20 is sandwiched between rotatable rollers connected to a drive source such as a motor.

  On the downstream side of the capstan 7, a width / thickness measuring unit 8 is disposed adjacent to the capstan 7. The width / thickness measuring unit 8 measures the width and thickness of the superconducting wire covered with the insulating tape. As the configuration of the width / thickness measuring unit 8, any configuration can be adopted as long as the width and thickness of the superconducting wire can be measured.

  A gauge 9 is disposed downstream of the width / thickness measuring unit 8. This gauge 9 measures the length of the processed superconducting wire. As a configuration of the gauge 9, any configuration can be used as long as the length of the superconducting wire can be measured.

  A height sensor 10 is disposed on the downstream side of the gauge 9. The height sensor 10 measures the position (height) of the superconducting wire 20. As the configuration of the height sensor 10, any configuration can be used as long as the position of the superconducting wire 20 can be detected. For example, a guide member or the like is disposed so as to surround the setting range of the position of the superconducting wire 20, and the height of the superconducting wire 20 becomes a predetermined height because the superconducting wire 20 contacts the guide member (setting range). It is good also as a structure which detects that it is located in the upper limit or lower limit of this.

  A winding unit 11 is disposed on the downstream side of the height sensor 10. In the winding unit 11, a winding reel for winding the superconducting wire covered with the insulating tape is disposed. The take-up reel can be moved in the vertical direction by a moving member such as a hydraulic cylinder in accordance with the output of the height sensor 10.

  The wrapping apparatus 1 is provided with a control unit 6. The control unit 6 controls the operation of the wrapping apparatus 1 and stores process conditions accompanying the operation of the wrapping apparatus 1. Specifically, the control unit 6 includes a recording unit that records information (data) on the condition of the superconducting wire to be wrapped and the lapping of the insulating tape, and an operation control unit that controls the overall operation of the lapping apparatus 1. . The data recorded in the recording unit includes, for example, the pitch of the insulating tape measured by the measuring unit 4, the gap between the insulating tapes when the insulating tape is wound so as to form a gap between the insulating tapes, and sparks. Data such as the inspection result in the tester 5, the width and thickness of the superconducting wire 20 measured in the width / thickness measuring unit 8, and the length of the superconducting wire 20 measured in the gauge 9 are recorded. In addition, in the control part 6, from the measurement result in the measurement part 4, the spark tester 5, etc., when the pitch or gap of the insulating tape is disturbed or the dielectric breakdown of the superconducting wire 20 coated with the insulating tape is detected. The operation of the wrapping apparatus 1 is controlled to be stopped.

  Next, the structure of the 1st and 2nd wrapping parts 31 and 32 is demonstrated. In addition, since the 1st and 2nd wrapping parts 31 and 32 are each provided with the same structure, the structure is demonstrated by making the 1st wrapping part 31 into a representative.

  As shown in FIGS. 2 to 4, the transport path of the superconducting wire 20 is set so that the superconducting wire 20 penetrates the center of the first wrapping portion 31. The first to third base bodies 35 to 37 and the first to third base bodies 35 to 37 are connected to each other with the guide member 60 defining the transport path of the superconducting wire 20 as the central axis. A supporting column for holding the insulating tape reel 38, and a roller 52 to guide the insulating tape 39 rewound from the insulating tape reel 38 to be wound around the superconducting wire 20. A rotating body including the 54, the position variable roller 55, and the insulating tape guides 50 and 51 is installed. This rotating body is supported rotatably with respect to the side wall 34 of the first wrapping portion 31. The rotating body is rotatable by a driving member such as a motor disposed outside the side wall 34, for example.

  The insulating tape reel 38 is arranged so that the superconducting wire 20 penetrates through an opening formed at the center thereof. The insulating tape 39 rewound from the insulating tape reel 38 is wound around the outer periphery of the superconducting wire 20 via the roller 52, the insulating tape guide 50, the roller 53, the insulating tape guide 51, the roller 54, and the position variable roller 55. . The position variable roller 55 is a roller that can change its position in the direction indicated by the arrow 58 (see FIG. 4).

  The winding of the insulating tape 39 is performed by the above-described rotating body rotating about the path (conveyance path) of the superconducting wire 20 as the central axis. A powder brake is installed on the fixed portion of the insulating tape reel 38. By this powder brake, the tension applied to the insulating tape 39 rewound from the insulating tape reel 38 can be kept constant. Specifically, the tension of the insulating tape 39 is kept constant by adjusting the torque applied to the insulating tape reel 38 according to the diameter of the insulating tape 39 in the insulating tape reel 38. Further, by changing the relative position of the position variable roller 55 to the superconducting wire 20 (for example, changing the position of the position variable roller 55 in the direction indicated by the arrow 58 in FIG. 4), the insulating tape 39 is changed to the superconducting wire 20. The winding angle θ (see FIG. 3) at the time of winding can be changed. Specifically, by changing the position of the position variable roller 55, the winding angle θ (see FIG. 3) of the insulating tape 39 with respect to the superconducting wire 20 can be adjusted within a range of 20 ° to 80 °, for example. .

  Further, the rotating direction of the rotating body described above can be rotated clockwise and counterclockwise around the superconducting wire 20 as indicated by an arrow 57 shown in FIG. The first wrapping unit 31 is provided with a static eliminating device 33 (see FIG. 1) on the side wall. The static eliminator 33 detects the amount of charge in the members in the first wrapping portion 31 such as the superconducting wire 20 and the insulating tape 39. And the static electricity of the said member is removed by spraying the ion of the opposite conductivity type to the said member in order to cancel the electrification of the said member. In this way, it is possible to suppress the occurrence of a problem that the tension of the insulating tape 39 fluctuates due to the insulating tape 39 being attracted to other members of the first wrapping portion 31 due to static electricity. In addition, since the static electricity removing device 33 can suppress the electrostatic charge of the insulating tape 39 itself, it is possible to suppress the occurrence of a problem that foreign matters are attracted to the insulating tape 39 due to the static electricity.

  In the wrapping apparatus 1 shown in FIG. 1, the configuration of the second wrapping unit 32 is basically the same as the configuration of the second wrapping unit 31. Further, the wrapping apparatus 1 shown in FIG. 1 may include three or more wrapping units configured as shown in FIGS. In this case, three or more sets of the wrapping unit as shown in FIGS. 2 to 4 and the first measurement unit 41 arranged on the downstream side of the wrapping unit may be provided.

  In addition, as the superconducting wire 20, for example, a tape-like wire having a line width of 2 mm or more and 5 mm or less and a thickness of 0.1 mm or more and 2.0 mm or less can be used. Moreover, as the superconducting wire 20, an oxide superconducting wire containing an oxide superconductor can be used. Further, as shown in FIG. 3, in the first wrapping portion 31, the superconducting wire 20 is guided at a portion where the insulating tape 39 is wound around the superconducting wire 20 (a portion where the superconducting wire 20 is exposed from the guide member 60). The distance between the dies 56 and 59 can be adjusted, for example, within a range of 0 mm to 100 mm. Note that a through hole slightly larger than the cross-sectional dimension of the superconducting wire 20 is formed in the dies 56 and 59, and the superconducting wire 20 is conveyed through the through hole. For example, the dimensions (height and width) of the cross-sectional shape of the through holes formed in the dies 56 and 59 are set to 1.1 to 2.5 times the dimensions (height and width) of the cross section of the superconducting wire. Has been. Further, the tension of the insulating tape 39 rewound from the insulating tape reel 38 can be adjusted within a range of, for example, 50 gf to 300 gf.

  Next, the manufacturing method of the superconducting wire with insulation coating using the lapping apparatus 1 shown in FIGS. FIG. 5 is a flowchart showing a method of manufacturing a superconducting wire with insulation coating according to the present invention. Referring to FIG. 5, in the method of manufacturing a superconducting wire with insulating coating, first, a superconducting wire preparing step (S <b> 10) is performed. Specifically, in the supply unit 2, the wire tape reel 21 around which the superconducting wire is wound is disposed at a predetermined position. At this time, when a plurality of superconducting wires are laminated and then covered with an insulating tape so as to cover the outer periphery of the laminated superconducting wire aggregate (laminate), a plurality of wire tape reels in the supply unit 2 21 is arranged.

  Next, an insulating tape preparation step (S20) is performed. Specifically, the insulating tape reel 38 is installed at a predetermined position of the first wrapping portion 31 and / or the second wrapping portion 32 as shown in FIGS. Then, the insulating tape 39 is discharged from the insulating tape reel 38, and the insulating tape 39 is set at a predetermined position via the rollers 52 to 54, the position variable roller 55, and the insulating tape guides 50 and 51 as shown in FIG. Then, the tip of the superconducting wire 20 delivered from the wire tape reel 21 of the supply unit 2 is wound around the take-up reel in the take-up unit 11 through the transport path (distribution path) of the superconducting wire 20 of the wrapping device 1. Then, in the first wrapping portion 31 and / or the second wrapping portion 32, the tip of the insulating tape 39 is fixed to the surface of the superconducting wire 20. In this way, preparation for carrying out the lapping process is completed.

  Next, a lapping step (S30) is performed. Specifically, the superconducting wire 20 passes through the inside of the wrapping device 1 by rotating the take-up reel of the take-up unit 11 and rotating the wire tape reel 21 of the supply unit 2. At the same time, in the first wrapping section 31 and / or the second wrapping section 32, the rotating body including the first to third base bodies 35 to 37 shown in FIG. 2 rotates about the flow path of the superconducting wire 20 as the central axis. . As a result, the insulating tape 39 is wound around the outer periphery of the superconducting wire 20.

  Then, at the same time that the insulating tape 39 is wound in this way, the measuring unit 4 measures the pitch and gap of the insulating tape 39 wound around the superconducting wire 20. When the insulating tape 39 is wound so as to completely cover the surface of the superconducting wire 20, a dielectric breakdown test is performed in the spark tester 5. In addition, the static eliminator 33 is operated in the wrapping mechanism 3 in order to suppress fluctuations in the tension of the insulating tape 39 due to the generation of static electricity. Further, the traveling speed of the superconducting wire 20 is kept constant by the action of the capstan 7. At the same time, the width / thickness measuring unit 8 measures the width and thickness of the superconducting wire wound with the insulating tape (superconducting wire with insulating coating). Furthermore, the length of the superconducting wire 20 (insulating coated superconducting wire) around which the insulating tape 39 is wound is measured by the measuring instrument 9. These measurement results are transmitted to the control unit 6 and recorded in the storage device of the control unit 6.

  Then, when the superconducting wire with insulation coating is wound around the winding reel of the winding unit 11, the diameter after winding the superconducting wire with insulation coating on the winding reel increases. In this case, the take-up reel is adapted so that the height (position of the transport path) of the superconducting wire with insulation coating (or superconducting wire 20) in the lapping device 1 is substantially constant according to the output of the height sensor 10. The center position is controlled to be gradually lowered downward. In this way, a superconducting wire with insulation coating in which the insulating tape 39 is wound around the outer periphery of the superconducting wire 20 can be obtained.

  FIG. 6 is a schematic cross-sectional view showing a superconducting wire with insulating coating manufactured using the method for manufacturing a superconducting wire with insulating coating according to the present invention. FIG. 7 is a schematic cross-sectional view taken along line VII-VII in FIG. With reference to FIG. 6 and FIG. 7, the superconducting wire 30 with an insulation coating manufactured using the lapping apparatus 1 shown in FIG. 1 will be described.

  As shown in FIGS. 6 and 7, the superconducting wire 30 with insulation coating is manufactured using the lapping apparatus shown in FIG. 1, and the insulating tape 39 spirals so as to cover the outer periphery of the tape-shaped superconducting wire 20. It has a wound structure. In the superconducting wire 30 with insulation coating shown in FIG. 6 and FIG. 7, the outer periphery of the superconducting wire 20 with the insulating tape 39 wound in a spiral shape without overlapping each other and with the ends being abutted with each other. It is arranged to cover. In the superconducting wire 30 with insulation coating shown in FIGS. 6 and 7, one insulating tape 39 covers the outer periphery of the superconducting wire 20 in a spiral shape (without exposing the outer peripheral surface of the superconducting wire 20). . Such a configuration is realized by winding the insulating tape 39 around the outer periphery of the superconducting wire 20 using only one of the first wrapping portion 31 and the second wrapping portion 32 in the wrapping mechanism portion 3 shown in FIG. it can. In the superconducting wire 30 with insulation coating shown in FIGS. 6 and 7, the winding pitch of the insulating tape 39 may be narrowed so that the ends of the adjacent insulating tapes 39 overlap each other. In this case, the outer peripheral surface of the superconducting wire 20 can be reliably covered with the insulating tape 39.

  FIG. 8 is a schematic cross-sectional view showing another example of a superconducting wire with insulating coating manufactured using the method for manufacturing a superconducting wire with insulating coating according to the present invention. FIG. 8 corresponds to FIG. With reference to FIG. 8, the superconducting wire 30 with an insulation coating according to the present invention will be described.

  The superconducting wire 30 with insulation coating shown in FIG. 8 is manufactured by using the lapping apparatus shown in FIG. 1, and basically has the same structure as the superconducting wire 30 with insulation coating shown in FIGS. However, the difference is that the insulating tape 39 is disposed so as to surround the outer periphery of the laminate in which a plurality of (specifically, five) superconducting wires 20 are laminated. In such a configuration, in the lapping apparatus 1 shown in FIG. 1, a plurality of (specifically, five) wire tape reels 21 are arranged in the supply unit 2, and the superconducting wire 20 is discharged from each wire tape reel 21. It can be obtained by passing the wrapping apparatus 1 in a laminated state and performing wrapping.

  FIG. 9 is a schematic view showing another example of a superconducting wire with insulating coating manufactured using the method for manufacturing a superconducting wire with insulating coating according to the present invention. With reference to FIG. 9, another example of the superconducting wire 30 with insulating coating will be described.

  The superconducting wire 30 with insulation coating shown in FIG. 9 basically has the same structure as the superconducting wire 30 with insulation coating shown in FIGS. 6 and 7, but two insulating tapes covering the outer periphery of the superconducting wire 20 are provided. It is different in that it is wound heavily. Specifically, first insulating tape 39a is spirally wound around the outer periphery of superconducting wire 20 (see FIG. 7). Further, another insulating tape 39b is similarly spirally wound so as to cover the outer periphery of the insulating tape 39a. In this way, since the insulating coating is formed twice by the insulating tapes 39a and 39b, the insulating performance of the insulating coating can be further improved. Such double insulation coating is obtained by winding the insulating tapes 39a and 39b around the superconducting wire 20 in the first and second wrapping portions 31 and 32 in the wrapping apparatus 1 shown in FIG. realizable.

  FIG. 10 is a schematic view showing another example of a superconducting wire with insulating coating manufactured by using the method for manufacturing a superconducting wire with insulating coating according to the present invention. With reference to FIG. 10, another example of the superconducting wire 30 with insulation coating according to the present invention will be described.

  The superconducting wire 30 with insulation coating shown in FIG. 10 basically has the same structure as the superconducting wire 30 with insulation coating shown in FIGS. 6 and 7, but an opening 40 is formed between the insulating tapes 39. As described above, the insulating tape 39 is wound around the superconducting wire 20. That is, in the opening 40, the surface of the superconducting wire 20 is exposed. In this way, when the superconducting wire 30 with insulation coating is wound in a coil shape and the arrangement of the wound superconducting wire with insulation coating is fixed with an adhesive, the superconducting wire 30 with insulation coating is securely attached. Can be fixed. That is, the adhesive can be easily permeated between the insulating tape 39 and the superconducting wire 20 from a portion where the surface of the superconducting wire 20 wound with the insulating tape is exposed.

  In addition, in such a superconducting wire 30 with insulating coating, the winding pitch of the insulating tape 39 in the first wrapping portion 31 is sufficiently larger than the width of the insulating tape 39 in the lapping apparatus 1 shown in FIG. Can be manufactured.

  FIG. 11 is a schematic diagram showing another example of a superconducting wire with insulating coating manufactured by using the method for manufacturing a superconducting wire with insulating coating according to the present invention. With reference to FIG. 11, another example of the superconducting wire with insulation coating according to the present invention will be described.

  The superconducting wire 30 with insulation coating shown in FIG. 11 basically has the same structure as the superconducting wire 30 with insulation coating shown in FIG. 9, but is wound around the spiral of the first insulating tape 39a. And the winding direction of the insulating tape 39b wound as the second layer on the outer periphery of the insulating tape 39a is different from each other. In such a configuration, in the lapping apparatus 1 shown in FIG. 1, the insulating tapes 39 a and 39 b are wound around the superconducting wire 20 by the first lapping unit 31 and the second lapping unit 32, and the rotating body with respect to the superconducting wire 20 is wound. This can be achieved by reversing the direction of rotation.

  The insulating tapes 39a and 39b may be wound so that adjacent insulating tapes partially overlap each other, or are wound so that the end faces are in contact with each other as shown in FIG. It may be. Further, only one of the insulating tape 39a and the insulating tape 39b may be wound around the superconducting wire 20 so as to cover the outer peripheral surface of the superconducting wire 20 (so as not to form an opening). In this case, the other of the insulating tape 39a and the insulating tape 39b may be wound around the superconducting wire 20 with a sufficiently large pitch so as to form the opening 40 as shown in FIG. 10, for example.

  FIG. 12 is a schematic view showing another example of a superconducting wire with insulating coating manufactured by using the method for manufacturing a superconducting wire with insulating coating according to the present invention. With reference to FIG. 12, another example of the superconducting wire with insulation coating according to the present invention will be described.

  The superconducting wire 30 with insulation coating shown in FIG. 12 basically has the same structure as the superconducting wire 30 with insulation coating shown in FIG. 11, except that each of the insulating tapes 39a and 39b is between adjacent portions. The difference is that the wire is wound around the superconducting wire 20 so that the opening 40 is formed. That is, in the superconducting wire 30 with an insulating coating shown in FIG. 12, a plurality of openings 40 are formed at substantially the center of the main surface of the superconducting wire 30 with an insulating coating. Even if it does in this way, the effect similar to the superconducting wire 30 with an insulation coating shown in FIG. 10 can be acquired.

  12 is wound around the superconducting wire 20 with the first wrapping portion 31 and the second wrapping portion 32 in the wrapping apparatus 1 shown in FIG. At the same time, the rotation direction of the rotating body with respect to the superconducting wire 20 is reversed, and the winding pitch of the insulating tapes 39a and 39b is sufficiently larger than the width of the insulating tapes 39a and 39b.

  In the superconducting wire 30 with insulation coating shown in FIGS. 6 to 12 described above, an adhesive layer may be disposed on the surface of the insulating tapes 39, 39a, 39b on the superconducting wire 20 side. For example, a thermoplastic adhesive layer may be formed as the adhesive layer.

  Hereinafter, although there is a part which overlaps with embodiment mentioned above, the characteristic structure of this invention is enumerated.

  A wrapping apparatus 1 according to the present invention is a superconducting wire wrapping apparatus, and includes a supply unit 2, a wrapping mechanism unit 3 as a wrapping unit, and a winding unit 11. The supply unit 2 pays out the superconducting wire 20. The wrapping mechanism unit 3 winds the insulating tapes 39, 39 a, and 39 b around the outer periphery of the superconducting wire 20 delivered from the supply unit 2. The winding unit 11 winds the wire with insulation coating (superconducting wire 30 with insulation coating) formed by winding the insulating tape 39, 39a, 39b in the wrapping mechanism unit 3. The wrapping mechanism 3 includes an insulating tape holding member (insulating tape reel 38), a guide member 60, a winding member (first to third base bodies 35 to 37 shown in FIGS. Support pillars that pass through the first to third base bodies 35 to 37 and are connected to each other, a holding section that is connected to the second base body 36 and holds the insulating tape reel 38, and an insulating tape that is rewound from the insulating tape reel 38 Rotating body comprising rollers 52 to 54 and a position variable roller 55 and insulating tape guides 50 and 51 for guiding 39 to be wound around the superconducting wire 20. The insulating tape reel 38 has an opening, and the insulating tape 39 is wound around and held around the opening so as to surround the opening. The guide member 60 guides the superconducting wire 20 so as to penetrate the opening of the insulating tape reel 38. The rotating body as the winding member winds the insulating tape 39 delivered from the insulating tape reel 38 around the superconducting wire 20.

  In this way, since the superconducting wire 20 is disposed so as to penetrate the opening of the insulating tape reel 38, when the insulating tape 39 is wound around the superconducting wire 20, the insulating tape reel 38 is connected to the superconducting wire 20. There is no such thing as going around. That is, since the arrangement of the insulating tape reel 38 is maintained in a state where the superconducting wire 20 penetrates the opening of the insulating tape reel 38, as in the case where the insulating tape reel 38 circulates around the superconducting wire 20, The winding speed of the insulating tape 39 around the superconducting wire 20 is not limited by the mechanical strength of the insulating tape reel 38 or the like. For this reason, the winding speed of the insulating tape 39 around the superconducting wire 20 can be improved as compared with the case where the insulating tape reel 38 circulates around the superconducting wire 20. As a result, the step of winding the insulating tape 39 around the superconducting wire 20 can be performed with high efficiency. Therefore, when an oxide superconducting wire is used as the superconducting wire 20, the process of forming the oxide superconducting wire with insulation coating by winding the insulating tape 39 around the oxide superconducting wire can be performed with high efficiency. it can.

  In the wrapping apparatus 1, the wrapping mechanism unit 3 may include a tension adjusting member (powder brake) that adjusts the tension of the insulating tape 39 that is discharged from the insulating tape reel 38. In this case, the tension of the insulating tape 39 can be controlled so as to fall within a predetermined range. For this reason, when the insulating tape 39 is wound around the superconducting wire 20, it is possible to suppress the tension of the insulating tape 39 from being excessive and applying an excessive stress to the superconducting wire 20. As a result, it is possible to suppress the occurrence of a problem that the characteristics of the superconducting wire 20 are deteriorated due to the excessive stress.

  In the wrapping apparatus 1, the wrapping mechanism 3 includes a wrapping angle changing member (position variable roller 55) that changes the wrapping angle θ of the insulating tape 39 with respect to the superconducting wire 20 as shown in FIGS. 2 to 4. May be. The position variable roller 55 may be a roller that guides the insulating tape 39 and that can change the relative position of the superconducting wire 20 along the extending direction of the superconducting wire 20. In this case, since the winding angle θ of the insulating tape 39 wound around the superconducting wire 20 can be arbitrarily changed, the winding state of the insulating tape 39 can be arbitrarily changed.

  In the wrapping apparatus 1, the insulating tape 39 may be wound around the oxide superconducting wire as the superconducting wire 20. In this case, the oxide superconducting wire with insulation coating can be produced with high efficiency. In the wrapping apparatus 1, a plurality of wrapping mechanism sections 3 may be formed. In this case, the superconducting wire 20 can be formed with an insulating coating having a laminated structure in which a plurality of insulating tapes 39a and 39b are laminated.

  In the wrapping apparatus 1, the guide member 60 is formed with an exposed portion that exposes the surface of the superconducting wire 20 (the portion where the superconducting wire 20 is exposed between the die 56 and the die 59 in FIG. 3). Also good. In the rotating body, the insulating tape 39 may be wound around the superconducting wire 20 at the exposed portion of the superconducting wire 20. The width of the exposed portion in the extending direction of the superconducting wire 20 may be changeable. In this case, since the width of the exposed portion of the superconducting wire 20 for winding the insulating tape 39 can be arbitrarily changed, the vibration of the superconducting wire 20 in the exposed portion is suppressed and the winding state of the insulating tape 39 is changed. The width can be set to keep good.

  The manufacturing method of the oxide superconducting wire with insulation coating according to the present invention is a manufacturing method of a superconducting wire with insulating coating, and performs a step of preparing an oxide superconducting wire (superconducting wire preparation step (S10)). A step of preparing an insulating tape holding member (insulating tape reel 38) having an opening and holding the insulating tape 39 in a circumferential shape so as to surround the opening (insulating tape preparation step (S20)) ). A step of placing the superconducting wire 20 so as to penetrate the opening of the insulating tape reel 38 and winding the insulating tape 39 delivered from the insulating tape reel 38 around the superconducting wire 20 (wrapping step (S30)). To implement.

  In this way, since the oxide superconducting wire (superconducting wire 20) is disposed so as to penetrate the opening of the insulating tape reel 38, in the lapping step (S30) for winding the insulating tape 39, the insulating tape is used. The reel 38 does not go around the superconducting wire 20. That is, the arrangement of the insulating tape reel 38 is maintained in a state where the superconducting wire 20 passes through the opening of the insulating tape reel 38. Therefore, unlike the case where the insulating tape reel 38 circulates around the superconducting wire 20, the winding speed of the insulating tape 39 around the superconducting wire 20 is not limited by the mechanical strength of the insulating tape reel 38. . For this reason, the winding speed of the insulating tape 39 around the superconducting wire 20 can be improved as compared with the case where the insulating tape reel 38 circulates around the superconducting wire 20. As a result, the lapping process (S30) for winding the insulating tape 39 can be performed with high efficiency. Therefore, the superconducting wire 30 with insulation coating in which the insulating tape 39 is wound around the superconducting wire 20 can be manufactured with high efficiency.

  In the method of manufacturing a superconducting wire with insulation coating, in the lapping step (S30) for winding the insulating tape, insulation is performed while changing the relative position of the superconducting wire 20 with respect to the insulating tape reel 38 in the extending direction of the superconducting wire 20. The tape 39 is spirally wound around the superconducting wire 20. In this case, the insulating tape 39 can be continuously wound around the superconducting wire 20 while moving the superconducting wire 20 relative to the insulating tape reel 38. For this reason, the manufacturing efficiency of the superconducting wire 30 with insulation coating can be further improved.

  In the method for manufacturing a superconducting wire with insulating coating, in the lapping step (S30) for winding the insulating tape, the insulating tape 39 partially overlaps or the adjacent end surfaces of the insulating tape 39 wound spirally contact each other. The insulating tape 39 may be wound around the superconducting wire 20 so that In this case, the outer periphery of the superconducting wire 20 can be reliably covered with the insulating tape 39.

  In the method of manufacturing a superconducting wire with insulating coating, in the lapping step (S30) for winding the insulating tape, the insulating tape 39 is wound around the superconducting wire 20 so that a part of the surface of the superconducting wire 20 is exposed. Also good. In this case, when the superconducting wire 30 with insulation coating is wound in a coil shape, the surface of the superconducting wire 20 is fixed when the arrangement of the wound (laminated) superconducting wire 30 with insulation coating is fixed with an adhesive. The adhesive can be easily penetrated between the insulating tape 39 and the superconducting wire 20 from the exposed portion. For this reason, in the coil formed using the superconducting wire 30 with the insulation coating according to the present invention, the shape can be reliably maintained using the adhesive.

  In the method for manufacturing a superconducting wire with insulation coating, the second wrapping portion 32 in the wrapping apparatus 1 of FIG. 1 has another opening, and the other insulating tape 39b is circumferentially surrounded so as to surround the other opening. A step of preparing another insulating tape holding member (another insulating tape reel) to be wound and held in a shape (insulating tape preparation step (S20)) may be performed. After the lapping step (S30) for winding the insulating tape, the superconducting wire 20 around which the insulating tape 39a is wound is disposed so as to penetrate the other opening of the other insulating tape reel, and the insulating tape 39a The step of winding the other insulating tape 39b paid out from the other insulating tape reel in a spiral shape so as to surround the periphery of the superconducting wire 20 wound around may be performed.

  In this case, as shown in FIG. 9 and the like, the insulating coating of the superconducting wire 20 can be configured by using two insulating tapes of an insulating tape 39a and another insulating tape 39b. For example, the outer periphery of the superconducting wire 20 can be covered with the insulating tape 39a as the first insulating coating, and then the second insulating coating can be formed with another insulating tape 39b.

  Further, as a different method, the following method can also be adopted. That is, in the process of winding the insulating tape 39a as the first coating process, the insulating tape 39a is spirally wound around the outer periphery of the superconducting wire 20. At this time, the winding pitch of the spirally wound insulating tape 39a is sufficiently larger than the width of the insulating tape 39a (preferably twice the width of the insulating tape), and the space between the wound insulating tapes 39a is set. To a state where the surface of the superconducting wire 20 is exposed. Then, in the step of winding another insulating tape 39b as the second coating step, the other insulating tape 39b is wound so that the portion where the surface of the superconducting wire 20 is exposed is covered with the other insulating tape 39b. . In this way, assuming that the winding speed of the insulating tapes 39a and 39b is constant, it is twice as much as the case where the entire outer periphery of the superconducting wire 20 is covered with the insulating tape 39a only in the first coating step. The superconducting wire 30 with insulating coating can be manufactured at a high speed.

  In the manufacturing method of the superconducting wire with insulating coating, the winding direction of the insulating tape 39a around the superconducting wire 20 in the lapping step (S30) for winding the insulating tape 39a and the lapping step (S30) for winding the other insulating tape 39b. The winding direction of the other insulating tape 39b around the superconducting wire 20 may be the same direction. In this case, when the insulating tape 39a is wound around the superconducting wire 20, a region where the surface of the superconducting wire 20 is exposed is formed between the insulating tape 39a, and the other surface is covered so as to cover the region where the surface is exposed. The insulating tape 39b is wound (along the previously wound insulating tape 39a) to produce the superconducting wire 30 with insulating coating at a higher speed than when the superconducting wire 20 is covered with only one insulating tape 39a. can do.

  In the manufacturing method of the superconducting wire with insulating coating, the winding direction of the insulating tape 39a around the superconducting wire 20 in the lapping step (S30) for winding the insulating tape 39a and the lapping step (S30) for winding the other insulating tape 39b. The winding direction of the other insulating tape 39b around the superconducting wire 20 may be different. In this case, since the insulating tape 39a and the other insulating tape 39b are wound around the superconducting wire 20 in a crossed state, the pitch at the time of winding the insulating tape 39a and the other insulating tape 39b is adjusted. A portion where the surface of the superconducting wire 20 is exposed (opening 40) can be formed at an arbitrary position on the surface of the superconducting wire 20.

  In the method of manufacturing a superconducting wire with insulation coating, in the lapping step (S30) for winding another insulating tape 39b, the other insulating tape 39b is partially overlapped or adjacent to another insulating tape 39b wound spirally. Another insulating tape 39b may be wound around the superconducting wire 20 around which the insulating tape 39a is wound so that the end faces to be brought into contact with each other. In this case, the surface of the superconducting wire 20 around which the insulating tape 39a is previously wound can be reliably covered with the other insulating tape 39b.

  In the method of manufacturing a superconducting wire with insulation coating, in the lapping step (S30) for winding the other insulating tape 39b, a part of the surface of the superconducting wire 20 wound around the insulating tape 39a is exposed. Another insulating tape 39b may be wound around the superconducting wire 20 around which the insulating tape 39a is wound. In this case, when the insulation-coated superconducting wire 30 is wound in a coil shape, when the arrangement of the wound (laminated) superconducting wire 30 with the insulation coating is fixed with an adhesive, the insulating tape 39a is first put. The adhesive can be easily permeated between the other insulating tape 39b and the superconducting wire 20 (or the insulating tape 39a) from the portion where the surface of the wound superconducting wire 20 is exposed. For this reason, in the coil formed using the superconducting wire 30 with the insulation coating according to the present invention, the shape can be reliably maintained using the adhesive.

  In the method for manufacturing a superconducting wire with insulating coating, the width of the superconducting wire 20 may be 10 mm or less. In this case, since the width of the normally available superconducting wire 20 is 10 mm or less, a superconducting wire with insulation coating can be obtained using a general superconducting wire.

  In the method for manufacturing a superconducting wire with insulating coating, in the step of preparing a superconducting wire (S10), a plurality of superconducting wires 20 may be prepared. Specifically, a plurality of wire tape reels 21 are arranged in the supply unit 2 in the lapping apparatus 1 of FIG. In the lapping step (S30) for winding the insulating tape, the insulating tapes 39, 39a, 39b may be wound around the laminated body in which the plurality of superconducting wires 20 are stacked. If it does in this way, the superconducting wire 30 with an insulation coating using the laminated body which laminated | stacked the several superconducting wire 20 can be obtained.

  In the method for manufacturing a superconducting wire with insulation coating, as the superconducting wire 20, a wire in which a plurality of core wires made of an oxide superconductor are arranged in a base material, a wire in which a plurality of superconducting wires containing an oxide superconductor are bundled, Alternatively, one selected from the group consisting of a wire in which a reinforcing member is connected to a superconducting wire including an oxide superconductor may be used. In this case, it is possible to obtain a superconducting wire 30 with an insulation coating in which an insulation coating is added to the various wires as described above.

  In the method for manufacturing a superconducting wire with insulating coating, the width of the insulating tapes 39 and 39a may be 10 mm or less. From a different point of view, in the method for manufacturing a superconducting wire with insulation coating, the width of the insulating tapes 39 and 39a may be equal to or less than the width of the superconducting wire 20. In this case, when the insulating tapes 39 and 39a are spirally wound around the superconducting wire 20, the winding angle θ (the angle formed between the side surface of the superconducting wire 20 and the extending direction of the insulating tape 39 shown in FIG. 3) is changed. Thus, the covering state of the insulating tape 39 is controlled relatively easily from the state in which the insulating tape 39 completely covers the outer periphery of the superconducting wire 20 to the state in which the surface of the superconducting wire 20 is exposed between the insulating tapes 39. be able to. The width of the insulating tape 39 may be 3 mm or more, more preferably 4 mm or more.

  In the method for manufacturing a superconducting wire with insulating coating, the width of the other insulating tape 39b may be 10 mm or less. From a different point of view, in the method for manufacturing a superconducting wire with insulation coating, the width of the other insulating tape 39b may be equal to or less than the width of the superconducting wire 20. In this case, when the other insulating tape 39b is spirally wound around the superconducting wire 20, the winding angle θ shown in FIG. 3 is changed, so that the superconducting wire 20 on which the insulating tape 39a is wound first is changed. From the state in which the outer periphery is completely covered by the other insulating tape 39b to the state in which the surface of the superconducting wire 20 on which the insulating tape 39a has been wound is exposed between the other insulating tapes 39b, The covering condition of the insulating tape 39b can be controlled. The width of the other insulating tape 39b may be 3 mm or more, more preferably 4 mm or more.

  The reason why the upper limit values of the widths of the insulating tapes 39, 39a and the other insulating tapes 39b are determined as described above is that the widths of the insulating tapes 39, 39a and the other insulating tapes 39b are too wide. This is because the spiral winding cannot be performed. In addition, as described above, the lower limit values of the widths of the insulating tapes 39, 39a and the other insulating tapes 39b are determined because the insulating tapes 39, 39a and the other insulating tapes 39b are tapes having a wide base material. Although it is manufactured by slitting (raw material) to a desired width, if the width of the insulating tape 39, 39a and other insulating tape 39b is too narrow, the slit cannot be formed.

In the method for manufacturing a superconducting wire with an insulating coating, the volume resistivity of the insulating tape may be 1 × 10 ¹⁶ Ωcm or more. In this case, the dielectric breakdown voltage of the superconducting wire 30 with insulating coating can be sufficiently increased.

In the method for manufacturing a superconducting wire with insulating coating, the volume resistivity of the other insulating tape 39b may be 1 × 10 ¹⁶ Ωcm or more. In this case, the dielectric breakdown voltage of the superconducting wire 30 with insulating coating can be sufficiently increased. Here, as a material constituting the insulating tapes 39 and 39a and the other insulating tape 39b, resins such as polyimide, polyphenylene sulfide, and polyester can be used. The lower limit of the volume resistivity of the insulating tapes 39, 39a and other insulating tapes 39b is set to the above numerical value when the superconducting wire 30 with insulating coating is applied in a coil and applied. This is because if the volume resistivity of the other insulating tape 39b falls below the lower limit, dielectric breakdown occurs in the tape, and the possibility of damage to the coil increases.

  In the method for manufacturing a superconducting wire with insulating coating, an adhesive layer may be formed on one surface of the insulating tapes 39 and 39a. In the lapping step (S30) for winding the insulating tape, the insulating tapes 39 and 39a may be connected to the superconducting wire 20 via an adhesive layer. In this case, since the insulating tapes 39 and 39a can be securely fixed to the superconducting wire 20, the position of the insulating tapes 39 and 39a with respect to the superconducting wire 20 is shifted when the superconducting wire 30 with insulation coating is handled. Generation | occurrence | production of the problem that the surface of 20 is exposed (insulation property of insulation coating deteriorates) can be suppressed.

  In the method for manufacturing a superconducting wire with insulating coating, another adhesive layer may be formed on one surface of another insulating tape 39b. In the lapping step (S30) for winding the other insulating tape 39b, the other insulating tape 39b is connected to the surface of the superconducting wire 20 around which the insulating tape 39a is wound via another adhesive layer. Also good. In this case, since the other insulating tape 39b can be securely fixed to the superconducting wire 20 (or the insulating tape 39a previously wound), when handling the superconducting wire 30 with insulation coating, The occurrence of the problem that the position of the insulating tape 39b is shifted and the insulating property of the insulating coating is deteriorated can be suppressed.

  In the method for manufacturing a superconducting wire with insulating coating, in the lapping step (S30) for winding the insulating tapes 39 and 39a, the superconducting power is exposed between the exposed portion (the die 56 and the die 59 in FIG. 3) exposing the surface of the superconducting wire 20. The superconducting wire 20 may be guided by the guide member 60 formed with a portion where the wire 20 is exposed. The width of the exposed portion in the extending direction of the superconducting wire 20 may be not less than 10 mm and not more than 50 mm. In this case, the insulating tapes 39 and 39a can be wound while suppressing the shaking of the superconducting wire 20 in the exposed portion.

  In the method for manufacturing a superconducting wire with insulation coating, in the lapping step (S30) in which another insulating tape 39b is wound, another exposed portion that exposes the surface of the superconducting wire 20 around which the insulating tape 39a is wound is formed. The superconducting wire 20 wound around the insulating tape 39a may be guided by the other guided member (the guide member 60 in the second wrapping portion 32). The width of the other exposed portion in the extending direction of the superconducting wire 20 wound around the insulating tape 39a may be 10 mm or more and 50 mm or less. In this case, the other insulating tape 39b can be wound while suppressing the shaking of the superconducting wire 20 in the exposed portion.

  The lower limit of the width of the exposed portion is set to the above value when the width of the insulating tape 39a (the other insulating tape 39b) is about 10 mm at the maximum, and the guide member 60 and the insulating tape 39a (the other insulating tape 39a) This is to reliably prevent contact with the tape 39b). Further, the upper limit of the width of the exposed portion is set to the above value because if the width of the exposed portion is further increased, the superconducting wire 20 sways, and the superconducting wire 20 has excessive stress due to the swaying. This is because the characteristic of the superconducting wire 20 may be deteriorated due to the addition.

  In the method for manufacturing a superconducting wire with insulating coating, the tension of the insulating tapes 39, 39a may be set to 50 gf or more and 300 gf or less in the lapping step (S30) for winding the insulating tapes 39, 39a. In this case, it is possible to avoid applying excessive stress to the superconducting wire 20 by the lapping step (S30) for winding the insulating tapes 39 and 39a. For this reason, possibility that the characteristic of the superconducting wire 20 will deteriorate due to the stress can be reduced.

  In the method for manufacturing a superconducting wire with an insulating coating, the tension of the other insulating tape 39b may be set to 50 gf or more and 300 gf or less in the lapping step (S30) for winding the other insulating tape 39b. In this case, it is possible to avoid applying excessive stress to the superconducting wire 20 by the process of winding the other insulating tape 39b. For this reason, possibility that the characteristic of the superconducting wire 20 will deteriorate due to the stress can be reduced.

  Note that the lower limit value of the tension of the insulating tape 39, 39a or other insulating tape 39b is defined as described above. If the tension is set below the lower limit value, the insulating tape 39, 39a or other insulating tape 39b is defined. This is because sagging or the like occurs during winding and causes trouble. In addition, the upper limit value of the tension of the insulating tape 39, 39a or other insulating tape 39b is defined as described above. If the tension is set to the upper limit value or more, the insulating tape 39, 39a or other insulating tape 39b is defined. This is because the stress applied to the superconducting wire 20 at the time of winding is excessive and causes deterioration of the characteristics of the superconducting wire 20. Moreover, the tension | tensile_strength of insulating tape 39, 39a or the other insulating tape 39b becomes like this. Preferably they are 80 gf or more and 200 gf or less.

  The superconducting wire 30 with an insulation coating according to the present invention is an oxide superconducting wire with an insulation coating, and is manufactured using the method for manufacturing a superconducting wire with an insulation coating. In this case, since the insulating coating can be formed without causing deterioration of the characteristics of the superconducting wire 20, it is possible to obtain the superconducting wire 30 with an insulating coating having good superconducting characteristics. The superconducting wire 30 with insulating coating may have a dielectric breakdown voltage of 0.1 kV or higher.

(Example)
In order to confirm the effect of the superconducting wire with insulation coating according to the present invention, the following experiment was conducted.

(sample)
As a superconducting wire, a bismuth superconducting wire having a width of 4.2 mm, a thickness of 0.22 mm, a number of core wires made of a superconductor of 55, and a silver ratio of 1.7 was prepared. A polyimide film was used as the insulating tape used as the covering material. The polyimide film had a thickness of 12.5 μm and a width of 4 mm. In this polyimide film, the thermoplastic adhesive was not particularly disposed on the surface. And the insulating tape which consists of the said polyimide film was arrange | positioned in each of the 1st wrapping part 31 and the 2nd wrapping part 32 of the wrapping apparatus 1 shown in FIG. As a method of winding the insulating tape, each was wound obliquely in the same direction. And the superconducting wire with insulation coating as shown in FIG. 9 was manufactured.

(Production conditions)
Seven superconducting wires described above were prepared and used as samples of Examples 1 to 6 and Comparative Example. And about each sample, as shown in the following Table 1, after changing the tension of the film of the insulating tape in the 1st wrapping part 31, and the tension of the 2nd film in the 2nd wrapping part 32, respectively, before wrapping The ratio of the critical current (Ic) of the lapped wire to the critical current (Ic) of the superconducting wire was measured. In addition, the space | interval between the dies 56 and 59 shown in FIG. 3 was 25 mm.

(result)
The results of the experiment are shown in Table 1 below.

  As can be seen from Table 1, in the samples of the examples of the present invention, there was no change in Ic before and after lapping, and there was no problem that Ic was deteriorated by lapping. On the other hand, when the tension of the insulating tape was 350 gf as in the comparative example, Ic was lowered after lapping.

  As can be seen from Table 1, if the tension at the time of winding the insulating tape can be appropriately controlled as in the method of manufacturing a superconducting wire with insulation coating according to the present invention, avoid deterioration of the characteristics of the superconducting wire due to lapping. I was able to.

  It should be understood that the embodiments and examples disclosed herein are illustrative and non-restrictive in every respect. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  The present invention is advantageously applied to a process of forming an insulating coating on an oxide superconducting wire.

It is a schematic diagram which shows the wrapping apparatus according to this invention. It is a perspective schematic diagram which shows the structure of the 1st wrapping part of the wrapping apparatus shown in FIG. FIG. 3 is a partial enlarged schematic view of a first wrapping portion shown in FIG. 2. It is a schematic diagram for demonstrating briefly the structure of the 1st wrapping part shown in FIG. It is a flowchart which shows the manufacturing method of the superconducting wire with an insulation coating by this invention. It is a cross-sectional schematic diagram which shows the superconducting wire with insulation coating manufactured using the manufacturing method of the superconducting wire with insulation coating by this invention. It is a cross-sectional schematic diagram in line segment VII-VII of FIG. It is a cross-sectional schematic diagram which shows the other example of the superconducting wire with an insulation coating manufactured using the manufacturing method of the superconducting wire with an insulation coating by this invention. It is a schematic diagram which shows the other example of the superconducting wire with an insulation coating manufactured using the manufacturing method of the superconducting wire with an insulation coating by this invention. It is a schematic diagram which shows the other example of the superconducting wire with an insulation coating manufactured using the manufacturing method of the superconducting wire with an insulation coating by this invention. It is a schematic diagram which shows the other example of the superconducting wire with an insulation coating manufactured using the manufacturing method of the superconducting wire with an insulation coating by this invention. It is a schematic diagram which shows the other example of the superconducting wire with an insulation coating manufactured using the manufacturing method of the superconducting wire with an insulation coating by this invention.

Explanation of symbols

  1 wrapping device, 2 supply section, 3 wrapping mechanism section, 4 measuring section, 5 spark tester, 6 control section, 7 capstan, 8 measuring section, 9 measuring instrument, 10 height sensor, 11 winding section, 20 superconductivity Wire material, 21 Wire tape reel, 30 Superconducting wire with insulation coating, 31 1st wrapping part, 32 2nd wrapping part, 33 Static electricity removing device, 34 Side wall, 35-37 1st to 3rd base body, 38 Insulating tape reel, 39, 39a, 39b Insulating tape, 40 Opening, 41 First measuring unit, 42 Second measuring unit, 50, 51 Insulating tape guide, 52-54 roller, 55 Position variable roller, 56, 59 Dies, 57, 58 Arrow 60 Guide member.

Claims (14)

A supply department that dispenses superconducting wire;
A wrapping portion for winding an insulating tape around an outer periphery of the superconducting wire paid out from the supply portion;
A winding portion that winds up the superconducting wire with insulation coating formed by being wound with an insulating tape in the wrapping portion;
The wrapping part is
An insulating tape holding member having an opening and holding the insulating tape wrapped around the circumference so as to surround the opening; and
A guide member for guiding the superconducting wire so as to penetrate the opening of the insulating tape holding member;
A superconducting wire wrapping apparatus, comprising: a winding member that winds the insulating tape paid out from the insulating tape holding member around the superconducting wire.   The superconducting wire wrapping apparatus according to claim 1, wherein the wrapping portion includes a tension adjusting member that adjusts a tension of the insulating tape delivered from the insulating tape holding member.   The superconducting wire wrapping apparatus according to claim 1, wherein the wrapping portion includes a wrapping angle changing member that changes a wrapping angle of the insulating tape with respect to the superconducting wire. The guide member is formed with an exposed portion that exposes the surface of the superconducting wire.
The winding member winds the insulating tape around the superconducting wire at the portion of the superconducting wire exposed at the exposed portion,
The superconducting wire wrapping apparatus according to any one of claims 1 to 3, wherein a width of the exposed portion in the extending direction of the superconducting wire is changeable. Preparing a superconducting wire;
Preparing an insulating tape holding member that has an opening and holds the insulating tape wrapped around the circumference so as to surround the opening; and
Arranging the superconducting wire so as to penetrate the opening of the insulating tape holding member, and winding the insulating tape delivered from the insulating tape holding member around the superconducting wire. Manufacturing method of superconducting wire with insulation coating.   In the step of winding the insulating tape, the insulating tape is spirally wound around the superconducting wire while changing the relative position of the superconducting wire with respect to the insulating tape holding member in the extending direction of the superconducting wire. The manufacturing method of the superconducting wire with an insulation coating according to claim 5 attached.   In the step of winding the insulating tape, the insulating tape is placed around the superconducting wire so that the insulating tape is partially overlapped or spirally wound so that adjacent end faces of the insulating tape are in contact with each other. The manufacturing method of the superconducting wire with an insulation coating according to claim 6 wound around a wire.   The method for producing a superconducting wire with insulation coating according to claim 6, wherein, in the step of winding the insulating tape, the insulating tape is wound around the superconducting wire so that a part of the surface of the superconducting wire is exposed. . Preparing another insulating tape holding member that has another opening and holds the other insulating tape wrapped around the circumference so as to surround the other opening; and
After the step of winding the insulating tape, the superconducting wire wound around the insulating tape is disposed so as to penetrate the other opening of the other insulating tape holding member, and the insulating tape Winding the other insulating tape delivered from the other insulating tape holding member in a spiral manner so as to surround the periphery of the superconducting wire wound around the substrate. The manufacturing method of the superconducting wire with an insulation coating of any one of these.   The winding direction of the insulating tape with respect to the superconducting wire in the step of winding the insulating tape is the same as the winding direction of the other insulating tape with respect to the superconducting wire in the step of winding the other insulating tape. The manufacturing method of the superconducting wire with an insulation coating of Claim 9.   The winding direction of the insulating tape to the superconducting wire in the step of winding the insulating tape is different from the winding direction of the other insulating tape to the superconducting wire in the step of winding the other insulating tape. The manufacturing method of the superconducting wire with an insulation coating of Claim 9. In the step of preparing the superconducting wire, preparing a plurality of superconducting wires,
The method for producing a superconducting wire with an insulation coating according to any one of claims 5 to 11, wherein, in the step of winding the insulating tape, the insulating tape is wound around a laminate obtained by laminating the plurality of superconducting wires. . An adhesive layer is formed on one surface of the insulating tape,
The method of manufacturing a superconducting wire with an insulation coating according to any one of claims 5 to 12, wherein in the step of winding the insulating tape, the insulating tape is connected to the superconducting wire through the adhesive layer.   The method of manufacturing a superconducting wire with an insulation coating according to any one of claims 5 to 13, wherein in the step of winding the insulating tape, a tension of the insulating tape is set to 50 gf or more and 300 gf or less.

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