JP6473875B2 - Coiled member manufacturing method and coiled member manufacturing apparatus - Google Patents

Description

  The present invention relates to a method for manufacturing a coil-shaped member using a flat conductor and a device for manufacturing a coil-shaped member.

  Examples of the coil device having a coil portion in which a coil-shaped member is disposed around a core include electric devices such as a motor, a generator, and a transformer, and are widely used. As such a coil device, for example, a device in which a plurality of cores are arranged in the radial direction of an annular member and a coil-like member is arranged around each core is known. In this coil device, it is required to increase the space factor of the coiled member in order to reduce the loss and size.

  However, in the coil device in which a plurality of cores are arranged in the radial direction of the annular member, the space between adjacent cores is wider outside the center side of the annular member, so a rectangular wire is wound. When the coil-shaped member is disposed, there is a problem that a gap is formed on the outside. Therefore, when a rectangular wire is used, only a space factor of about 60% can be obtained.

  In view of this, a method has been proposed in which a coil-shaped member is formed by laminating and winding round wires, and the space factor is increased by increasing the number of round wires laminated outside the core (for example, Patent Document 1). reference). However, when round wires are stacked, a gap is formed between adjacent round wires, and there is a problem that the space factor cannot be sufficiently increased. Moreover, since it laminated | stacked, heat dissipation fell, and there also existed a problem that resistance raised with the heat | fever which generate | occur | produced with the round wire. Furthermore, there is a problem that the manufacturing method is complicated and the cost is increased, such as increasing the number of laminated layers outside the core.

JP 2004-274878 A WO2013 / 187501

  Accordingly, a plurality of strip-like flat conductor members that can be formed into a spiral structure when continuous are prepared, and a coil-like member is formed by pressing and joining ends facing each other in the length direction ( For example, see Patent Document 2). According to this, since the flat conductor member can be formed and joined in accordance with the shape of the core and the shape of the space where the coiled member is disposed, the shape of the core and the coiled member are disposed. The coil-shaped member suitable for the shape of the space part to be formed can be formed, and the space factor of the coil-shaped member can be increased.

  However, for example, when the round wires are pressed against each other, the round wires can be sandwiched with a clamping jig relatively easily, and the pressure can be applied evenly. Therefore, there is a problem that it is difficult to pinch with a clamping jig and it is difficult to apply pressure evenly. Also, for example, in the case of a round wire, even if the thickness of the joint portion is increased by pressure welding, the outer periphery is an arc, so that the clamping jig can be separated from the round wire, whereas the flat conductor member However, when the thickness of the joint portion is increased by pressure welding, there is also a problem that it is difficult to closely contact the clamp jig.

  The present invention has been made based on such a problem, and an object of the present invention is to provide a coil-shaped member manufacturing method and a coil-shaped member manufacturing apparatus capable of easily and firmly pressing a flat conductor member. To do.

  The manufacturing method of the coil-shaped member of the present invention prepares a plurality of strip-shaped flat conductor members that can form a spiral structure when continuous, and presses and joins the ends facing each other in the length direction to bond the coil-shaped member. A sandwiching step in which one flat conductor member to be pressed is sandwiched by a first clamp jig and the other flat conductor member is sandwiched by a second clamp jig, and after this sandwiching step, a first clamp is formed A pressure welding step in which the jig and the second clamp jig are relatively moved so as to approach each other and the ends facing each other in the length direction of the one flat conductor member and the other flat conductor member are pressed against each other; After the process, the first clamping jig and the second clamping jig include a separation step of separating the first clamping jig from the one flat conductor member and separating the second clamping jig from the other flat conductor member. , Respectively 3 or more The sandwiched portion divided into two is configured so as to sandwich the flat conductor member, and at least two of the sandwiched portions divided into three or more include a corner sandwiched portion provided with a recess corresponding to the corner of the planar conductor member. When the corner clamping part is moved in an oblique direction with respect to the two pairs of opposing surfaces of the flat conductor member when viewed from the opposing direction of the first clamping jig and the second clamping jig, clamping is performed. In the process, the flat conductor member is sandwiched, and in the separation process, the flat conductor member is separated.

  The coil-shaped member manufacturing apparatus of the present invention prepares a plurality of strip-shaped flat conductor members that can become a spiral structure when continuous, and presses and joins the ends facing each other in the length direction to bond the coil-shaped members. A first clamp jig and a second clamp jig which are formed and include a first clamp jig for sandwiching one flat conductor member in pressure contact and a second clamp jig for sandwiching the other flat conductor member in pressure contact Each of the jigs has a clamping portion divided into three or more, and at least two of the clamping portions divided into three or more are corner portions provided with recesses corresponding to the corner portions of the flat conductor member. It is a clamping part, and a corner | angular part clamping part moves to the direction which becomes respectively diagonal with respect to two pairs of opposing surfaces of a flat conductor member seeing from the opposing direction of a 1st clamp jig | tool and a 2nd clamp jig | tool. By sandwiching a flat conductor member, or a flat conductor Those constructed away from the wood.

  According to the present invention, the first clamping jig and the second clamping jig have a clamping portion divided into three or more, and at least two of them are provided with a recess corresponding to the corner of the flat conductor member. It is a corner pinching portion, and this corner pinching portion is moved in a direction that is inclined with respect to the two opposing surfaces of the flat conductor member when viewed from the facing direction of the first clamp jig and the second clamp jig. By doing so, the flat conductor member is sandwiched and separated from the flat conductor member, so even a flat conductor member having a flat corner portion can be easily pinched by a clamping jig and pressure is easily applied. be able to. Further, even if the thickness of the joint portion of the flat conductor member is increased by pressure welding, the clamp jig can be easily separated from the flat conductor member. Therefore, the flat conductor member can be easily and firmly pressed and a coiled member using the flat conductor member can be obtained.

It is a figure showing the structure of the coil-shaped member manufactured with the manufacturing method of the coil-shaped member which concerns on one embodiment of this invention. It is the figure which looked at the coil-shaped member shown in FIG. 1 from the I direction. It is a figure showing the example of 1 structure of the flat conductor member which comprises the coil-shaped member shown in FIG. It is a figure showing each manufacturing process in the manufacturing method of the coil-shaped member which concerns on one embodiment of this invention. It is a figure showing the structure of a 1st clamp jig | tool and a 2nd clamp jig | tool. It is a figure showing operation | movement of a 1st clamp jig | tool and a 2nd clamp jig | tool. It is a figure for demonstrating the effect | action of a 1st clamp jig | tool and a 2nd clamp jig | tool. It is a figure showing the other structural example of a 1st clamp jig | tool and a 2nd clamp jig | tool.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a diagram illustrating a configuration of a coiled member 10 manufactured by the method for manufacturing a coiled member according to the present embodiment. FIG. 2 shows a state in which the coiled member 10 shown in FIG. 1 is viewed from the I direction. FIG. 3 shows a configuration example of the flat conductor member 11 constituting the coiled member 10 shown in FIG. The coil-shaped member 10 is formed by preparing a plurality of strip-shaped flat conductor members 11 that can be formed into a spiral structure when continuous, and press-contacting and joining ends facing each other in the length direction.

  The flat conductor member 11 refers to a strip-like (tape-like) conductor member configured in a plane with respect to the round wire conductor member. That is, as shown in FIGS. 3A and 3B, the flat conductor member is a belt-like member having two wide surfaces WS facing each other and two narrow surfaces WT facing each other and long in a predetermined direction. The cross section perpendicular to the length direction BL is a conductor member having a rectangular or rounded rectangular shape. Note that FIG. 3B shows a cross-sectional structure taken along line III-III shown in FIG.

  The length of the flat conductor member 11 is preferably set to, for example, one round or less. The coil-shaped member 10 is preferably configured so that, for example, the width W1 of one flat conductor member 11 is increased from one to the other in the spiral traveling direction and in a direction orthogonal to the spiral traveling direction. The coil-shaped member 10 is also preferably configured such that the height H of the flat conductor member 11 decreases from one to the other in the spiral traveling direction. The height H of the flat conductor member 11 is the length in the spiral traveling direction. The cross-sectional area of the flat conductor member 11 may be constant in two directions orthogonal to the spiral traveling direction, but may be varied depending on the purpose.

  FIG. 4 shows each manufacturing process in the manufacturing method of the coil-shaped member 10 which concerns on this Embodiment. The method for manufacturing the coil-shaped member 10 includes a sandwiching step of sandwiching one flat conductor member 11 in pressure contact with a first clamp jig 21 and sandwiching the other flat conductor member 11 with a second clamp jig 22 (FIG. 4 ( A))), and after this clamping step, the first clamp jig 21 and the second clamp jig 22 are relatively moved so as to approach each other, and one flat conductor member 11 and the other flat conductor member 11 After the press-contacting process (see FIG. 4B) for pressing the ends facing each other in the length direction, the first clamping jig 21 is separated from the one flat conductor member 11 and the second And a separation step (see FIG. 4C) for separating the clamp jig 22 from the other flat conductor member 11.

  In the clamping step, as shown in FIG. 4A, the first clamp jig 21 is moved by a moving means (not shown) to sandwich one flat conductor member 11, and the second clamp jig 22 is moved (not shown). The other flat conductor member 11 is sandwiched by the means, and the end portion in the length direction of one flat conductor member 11 and the end portion in the length direction of the other flat conductor member 11 are arranged to face each other. At that time, the end portion on the joining side of one flat conductor member 11 protrudes from the first clamp jig 21 by a predetermined amount, and the end portion on the joining side of the other flat conductor member 11 extends from the second clamp jig 22. The first clamp jig 21 and the second clamp jig 22 are arranged so as to face each other with a predetermined interval by protruding a predetermined amount.

  In the pressure contact process, as shown in FIG. 4B, the first clamp jig 21 and the second clamp jig 22 are relatively moved so as to approach each other by a moving means (not shown), and one flat conductor member is obtained. 11 and the other flat conductor member 11 are crimped to each other. Thereby, a force is applied at the joint 12 between the one flat conductor member 11 and the other flat conductor member 11, and the portion of the flat conductor member 11 sandwiched between the first clamp jig 21 or the second clamp jig 22. The thickness becomes thicker than.

  In the separation step, as shown in FIG. 4C, the first clamp jig 21 is moved by a moving means (not shown) so as to be separated from the one flat conductor member 11, and the second clamp jig 22 is moved not shown. It is moved by means and separated from the other flat conductor member 11. After the separation step, for example, as shown in FIG. 4D, the first clamp jig 21 and the second clamp jig 22 are moved relatively apart by a moving means (not shown), Return to the position shown in (A). After that, as necessary, the above-described clamping process, press-contacting process, and separation process are repeated in order several times.

  At that time, the first clamp jig 21 and the second clamp jig 22 may be configured so as to sandwich the flat conductor member 11 by the sandwiching portion 23 divided into three or more as shown in FIG. preferable. It is preferable that at least two of the sandwiching portions 23 divided into three or more are corner portion sandwiching portions 24 provided with recesses 24 </ b> A corresponding to the corner portions of the flat conductor member 11. FIG. 5 is a view of the first clamp jig 21 and the second clamp jig 22 as viewed from the facing direction thereof, and the first clamp jig 21 and the second clamp jig 22 are divided into four parts, respectively. In this example, each clamping part 23 is a corner clamping part 24 having a recess 24A.

  The first clamp jig 21 and the second clamp jig 22 are, for example, as shown in FIG. 6, when viewed from the opposing direction of the first clamp jig 21 and the second clamp jig 22, 24 is moved in an oblique direction with respect to two pairs of opposing surfaces of the flat conductor member 11 (a pair of wide surfaces WS and a pair of narrow surfaces WT). It is preferable to sandwich and separate from the flat conductor member 11 in the separation step. That is, in the clamping step, each corner clamping unit 24 is moved so that the distance between the recess 24A of each corner clamping unit 24 and the wide surface WS and narrow surface WT facing each other is reduced. In the separation step, each corner portion clamping portion 24 is moved so that the distance between the concave portion 24A of each corner portion sandwiching portion 24 and the wide surface WS and narrow surface WT facing each other is increased. Is preferred.

  By moving each corner clamping portion 24 in this way, even the flat conductor member 11 having a flat corner portion can be easily sandwiched between the first clamping jig and the second clamping jig 22 in the clamping process. And pressure can be easily applied. Further, as shown in FIG. 7, even if the thickness of the joint portion 12 of the flat conductor member 11 is increased by pressure welding, the flat conductor member 11 is in close contact with the first clamp jig 21 and the second clamp jig 22. In the separation step, the first clamp jig and the second clamp jig 22 can be easily separated from the flat conductor member 11.

  In the above description, each of the first clamping jig 21 and the second clamping jig 22 is constituted by a clamping part 23 divided into four parts, and each clamping part 23 is a corner clamping part 24 having a recess 24A. A specific case has been described. For example, as shown in FIG. 8, the first clamp jig 21 and the second clamp jig 22 are each constituted by a clamping portion 23 divided into three parts, and two of them are included. You may comprise so that the one clamping part 23 may be the corner | angular part clamping part 24 which has the recessed part 24A.

  In this case, with respect to the corner portion clamping portion 24, the corner portion clamping portion 24 is viewed from the opposing direction of the first clamp jig 21 and the second clamp jig 22 in the clamping step and the separation step as described above. The flat conductor member 11 is moved in an oblique direction with respect to two pairs of opposing surfaces (a pair of wide surfaces WS and a pair of narrow surfaces WT). About the clamping part 23 in which the recessed part 24A is not provided, it may be moved so that it may approach or separate with respect to the flat conductor member 11 in a clamping process and a separation | spacing process, and does not need to be moved.

  As described above, according to the present embodiment, the first clamping jig 21 and the second clamping jig 22 have the clamping portions 23 divided into three or more, and at least two of them are corners of the flat conductor member 11. 24A is a corner pinching portion 24 provided with a concave portion 24A corresponding to the portion, and the corner pinching portion 24 of the flat conductor member 11 is viewed from the opposing direction of the first clamp jig 21 and the second clamp jig 22. Since the flat conductor member 11 is sandwiched and separated from the flat conductor member 11 by moving in an oblique direction with respect to the two pairs of opposing surfaces, the flat conductor member 11 has a flat corner portion. However, it can be easily sandwiched between the first clamp jig 21 and the second clamp jig 22, and pressure can be easily applied. Further, even if the thickness of the joint portion 12 of the flat conductor member 11 is increased by pressure welding, the first clamp jig 21 and the second clamp jig 22 can be easily separated from the flat conductor member 11. Therefore, the flat conductor member 11 can be easily and firmly pressed and the coiled member 10 using the flat conductor member 11 can be obtained.

  The present invention has been described with reference to the embodiment. However, the present invention is not limited to the above embodiment, and various modifications can be made. For example, in the above embodiment, each component has been specifically described. However, not all the components may be provided, and other components may be provided.

  It can be used for electric equipment such as a motor, a generator, or a transformer.

  DESCRIPTION OF SYMBOLS 10 ... Coil-shaped member, 11 ... Flat conductor member, 12 ... Joint part, 21 ... 1st clamp jig | tool, 22 ... 2nd clamp jig | tool, 23 ... clamping part, 24 ... corner | angular part clamping part, 24A ... recessed part

Claims (5)

A method of manufacturing a coil-shaped member, in which a plurality of strip-shaped flat conductor members that can be formed into a spiral structure when continuous are prepared, and a coil-shaped member is formed by pressing and joining ends facing each other in the length direction. ,
Sandwiching one flat conductor member in pressure contact with the first clamp jig and sandwiching the other flat conductor member with the second clamp jig; and
After this clamping process, the first clamp jig and the second clamp jig are moved relatively close to each other so that one flat conductor member and the other flat conductor member face each other in the length direction. A pressure welding process for pressure-contacting the parts;
After the pressure contact step, the first clamping jig is separated from one flat conductor member, and the second clamping jig is separated from the other flat conductor member,
The first clamp jig and the second clamp jig are each configured to sandwich a flat conductor member by a sandwiching portion divided into three or more,
At least two of the clamping parts divided into three or more are corner clamping parts provided with recesses corresponding to the corners of the flat conductor member,
When viewed from the opposing direction of the first clamping jig and the second clamping jig, the corner clamping part is moved in an oblique direction with respect to two pairs of opposing surfaces of the flat conductor member, A method for producing a coil-shaped member, wherein the flat conductor member is sandwiched in the sandwiching step and is separated from the flat conductor member in the separation step.     The said 1st clamp jig | tool and the said 2nd clamp jig | tool are comprised so that it may respectively have four corner | angular part clamping parts corresponding to the corner | angular part of a flat conductor member individually. A manufacturing method of a coil-shaped member.   The method for manufacturing a coil-shaped member according to claim 1 or 2, wherein the sandwiching step, the press-contacting step, and the separation step are repeated in order several times. A device for manufacturing a coil-shaped member that forms a coil-shaped member by preparing a plurality of strip-shaped flat conductor members that can form a spiral structure when continuous, and pressing and joining ends facing each other in the length direction. ,
A first clamp jig that sandwiches one flat conductor member that is in pressure contact; and a second clamp jig that sandwiches the other flat conductor member that is in pressure contact;
Each of the first clamp jig and the second clamp jig has a clamping portion divided into three or more,
At least two of the clamping parts divided into three or more are corner part clamping parts provided with recesses corresponding to the corner parts of the flat conductor member,
The corner pinching portion is moved in a direction that is inclined with respect to the two opposing surfaces of the flat conductor member as seen from the opposing direction of the first clamping jig and the second clamping jig. The coil-shaped member manufacturing apparatus is configured to sandwich the flat conductor member or to be separated from the flat conductor member.     5. The coil-shaped member according to claim 4, wherein each of the first clamp jig and the second clamp jig has four corner pinching portions individually corresponding to corner portions of the flat conductor member. manufacturing device.

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