JP6620652B2 - Coil winding method - Google Patents

Description

  The present invention relates to a coil winding method.

  Conventionally, as a technology in such a field, there is JP 2011-061099 A. The wire winding device described in this publication includes a feed mechanism that feeds the wire in the longitudinal direction, a shaft that contacts the side surface of the wire, a vendor that bends the wire around the shaft, And a flange that holds the square line that is wound around the shaft in the axial direction of the shaft. As a result, when the vendor performs a turning operation around the shaft, the square line can be bent and an edgewise coil can be formed.

JP 2011-061099 A

However, in the conventional rectangular wire winding device described above, there is a large variation in the twisted state of the coil wound in a spring shape, and the shape dimension does not meet the specified value used for the product, or the winding is collapsed during the winding Winding may become impossible. Therefore, by supplying oil to the surface of the square wire, it is conceivable to reduce the frictional resistance between the square wire and the jig when the coil is twisted and to reduce the variation in the twist condition. For example, as shown in FIG. 6, when the oil is applied to the square line, the variation in the winding and twisting angle becomes smaller than when oil is not applied. Here, the winding and twisting angle represents the difference between the upper and lower stages of the degree of twisting of the coil wound in a spring shape. At this time, as the amount of oil applied to the surface of the square line is more stable, the variation in the twisted state of the coil becomes smaller. However, when oil is applied to the surface of the square line in the bobbin state in advance, there is a problem that it is difficult to maintain and manage a certain amount of oil film because the amount of oil changes depending on the storage state, packing state, and the like.
The present invention provides a coil winding method that reduces variations in twisting.

A coil winding and twisting method according to the present invention is a coil winding and twisting method in which an edgewise coil is formed by bringing a side surface of a square line into contact with a main body of a shaft, and the shaft extends in the vertical direction. The main body and a groove that transmits oil along the vertical direction, and when the square wire is wound around the outer periphery of the main body, the oil is supplied from the groove to the square wire. .
Accordingly, the bending of the square line can be performed around the main body portion of the shaft while stably supplying oil to the surface of the square line.

  Thereby, the winding method of the coil which reduced the variation in the twist condition can be provided.

1 is a perspective view of a winding device according to a first embodiment. 1 is a cross-sectional view of a winding device according to a first embodiment. FIG. 3 is an enlarged view in the vicinity of a square contact portion of a cross section of the winding device according to the first exemplary embodiment; FIG. 3 is a diagram illustrating an operation flow of the winding device according to the first exemplary embodiment. It is sectional drawing of the winding apparatus concerning Embodiment 2. FIG. It is a comparison figure of the dispersion | variation when not applying with the case where oil is applied to a square line.

Embodiment 1
Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1, the winding device 1 includes a shaft 11 with which a side surface of the square wire 10 is in contact, and a bending piece 12 disposed in the vicinity of the outer periphery of the shaft 11. Although not shown, a square wire 10 wound in a bobbin shape is arranged on the right side of FIG. 1, and a square wire that is thinly formed in the vertical direction is sent from the right side of FIG. 1 toward the shaft 11. .

  As shown in FIG. 2, the shaft 11 extends in the up-down direction and can be operated in a piston shape, a flange 22 connected to the upper end of the main body 21, and an outer peripheral side of the main body 21. And a cylinder portion 23 in which the main body portion 21 is disposed.

  The main body 21 has a substantially cylindrical shape extending in the up-down direction. The upper part of the main body part 21 protrudes upward from the upper end of the cylinder part 23. A groove 31 is provided on the outer peripheral surface of the main body 21 so as to extend in the vertical direction. A portion of the main body 21 that is above the upper end of the cylinder portion 23 and below the flange 22 and that is bent by the contact of the side surface of the square wire 10 is defined as a square contact portion 21a.

  When oil is supplied from the outside to an oil supply port 23b described later, the oil is transmitted through the groove 31 and discharged from an oil discharge part 31a provided at the upper end of the groove 31. As shown in FIG. 3, the oil discharge portion 31 a is a portion that does not face the inner periphery of the cylinder portion 23 because the rectangular contact portion 21 a is disposed above the upper end of the cylinder portion 23. Therefore, in the oil discharge part 31 a, the oil transmitted through the groove part 31 is discharged to the outer peripheral side of the main body part 21.

  As shown in FIG. 2, the flange 22 is connected to the upper end portion of the main body portion 21 and protrudes in the outer peripheral direction. The lower surface of the flange 22 is moved to the upper surface of the square wire 10 by moving the main body portion 21 downward after the square wire 10 comes into contact with the square wire contact portion 21a with the main body portion 21 moving upward. The clamp is in contact. In addition, when the oil is applied to the surface of the square wire 10 from the oil discharge portion 31a as will be described later, the flange 22 contacts the upper surface of the square wire via the applied oil. The state in which the lower surface of the flange 22 is not in contact with the upper surface of the square wire 10 in a state where the main body portion 21 has moved upward is referred to as an unclamped state.

  The cylinder part 23 has a cylindrical shape extending in the vertical direction. The inner peripheral surface of the cylinder portion 23 faces the outer peripheral surface of the main body portion 21. An oil supply port 23 b penetrating the inside and the outside is formed at a position near the lower portion of the cylinder portion 23. The oil supply port 23 b is formed at a position facing the groove 31 of the main body 21. Therefore, the oil supply port 23b supplies oil to the groove 31 when oil is supplied from the outside. For example, the cylinder portion 23 has a portion in the vicinity of the upper portion protruding in the circumferential direction, and the protruding portion is fixed to a pedestal or the like. Thereby, the cylinder part 23 is fixed to the base.

  The bending piece 12 is disposed in the vicinity of the outer periphery of the rectangular contact portion 21 a of the main body portion 21. The bending piece 12 bends the square wire 10 by turning around the outer periphery of the main body portion 21 in a state of being in contact with the square wire 10. Thereby, the bending piece 12 performs bending in a state where the square wire 10 is in contact with the square wire contact portion 21a of the main body portion 21 so that the square wire 10 forms a coil.

  Next, with reference to FIG. 4, the procedure at the time of forming a coil with the coil | winding apparatus 1 is demonstrated.

  Initially, the main body portion 21 is in an unclamped state and the square wire 10 is in contact with the square wire contact portion 21 a of the main body portion 21.

  Oil is supplied to the oil supply port 23b. Here, the outer diameter of the main body portion 21 and the inner diameter of the cylinder portion 23 are substantially the same, and are almost between the outer peripheral surface of the main body portion 21 and the inner peripheral surface of the cylinder portion 23 except for the location of the groove portion 31. It is formed so as not to generate a gap. Therefore, the oil supplied to the oil supply port 23b is transmitted upward through the groove portion 31, and is discharged toward the square line 10 from the oil discharge portion 31a provided in the square line contact portion 21a (S11). . As a result, as shown in FIG. 4, oil is applied so as to form an oil film 41 on the upper and lower surfaces of the square wire 10.

  The square wire 10 is clamped using the flange 22 (S12). That is, as shown in FIG. 3, the flange 22 is brought into contact with the upper surface of the square wire 10 through the oil film 41 by moving the main body portion 21 downward. The square wire 10 is clamped by being sandwiched between the upper end 23a of the cylinder portion 23 and the lower end of the flange 22 with the oil film 41 formed on the upper and lower surfaces.

  The bending piece 12 turns around the main body portion 21 while the side surface of the square wire 10 is in contact with the square wire contact portion 21a of the main body portion 21 (S13). Thereby, the square wire 10 in contact with the bending piece 12 is hung so as to form an edgewise coil around the main body 21. At this time, since the oil is applied to the upper and lower surfaces of the square wire 10, friction generated on the upper and lower surfaces of the square wire 10 is reduced, so that the square wire 10 can be easily bent to a target angle. That is, the angle variation when winding the square wire 10 is smaller than when oil is not applied.

  The bending piece 12 returns to the original position after the bending of the square line 10 is completed (S14).

  The flange 22 is in an unclamped state with respect to the square wire 10 (S15). That is, when the main body portion 21 moves upward, the unlocked state in which the lower surface of the flange 22 and the upper surface of the square wire 10 are separated from each other is obtained. Thereafter, the rectangular wire 10 wound in a bobbin shape is sent out, and the process returns to S11 and is repeated until the winding is completed. In this manner, the coil is formed while a certain amount of oil is continuously applied to the square wire 10 from the oil discharge portion 31a.

  Thus, by applying oil immediately before coiling the square wire, it is easy to adjust the amount of oil applied to the square wire, and it is possible to stabilize the thickness of the oil film. As a result, it is possible to reduce the variation in the winding angle as compared with the case of simply applying oil. Therefore, collapse of the winding can be prevented and the winding shape can be stabilized. Further, since the influence of the amount of oil applied to the square wire in the bobbin state is small when winding the coil, the winding equipment can be made robust. Furthermore, since the management of the amount of oil such as the storage state and packing can be simplified for the square line in the bobbin state, the distribution cost can be reduced.

Embodiment 2
Next, the winding device 2 in which the groove portion is provided on the inner peripheral side of the cylinder portion 63 will be described with reference to FIG. Of the constituent articles of the winding device 2, those having the same functions as the constituent items of the winding apparatus 1 shown in the first embodiment are given the same reference numerals, and description thereof is omitted.

  The winding device 2 includes a shaft 51 with which the side surface of the square wire 10 is in contact, and a bending piece 12 disposed in the vicinity of the outer periphery of the shaft 51.

  As shown in FIG. 5, the shaft 51 extends in the up-down direction and can be operated in a piston-like manner, a flange 62 connected to the upper end of the main body 61, and an outer peripheral side of the main body 61. And a cylinder part 63 in which the main body part 61 is disposed.

  The main body 61 has a substantially cylindrical shape extending in the vertical direction. The upper part of the main body part 61 protrudes upward from the upper end of the cylinder part 63. A portion of the main body 61 that is above the upper end of the cylinder portion 63 and below the flange 62 and that is bent by the contact of the side surface of the square wire 10 is defined as a square wire contact portion 61a.

  The flange 62 is connected to the upper end portion of the main body 61 and protrudes in the outer peripheral direction. The lower surface of the flange 62 is moved to the upper surface of the square wire 10 by moving the main body portion 61 downward after the square wire 10 comes into contact with the square wire contact portion 61a with the main body portion 61 moved upward. The clamp is in contact.

  The cylinder part 63 has a cylindrical shape extending in the vertical direction. The inner peripheral surface of the cylinder part 63 faces the outer peripheral surface of the main body part 61. An oil supply port 63 b penetrating the inside and the outside is formed at a position near the lower portion of the cylinder portion 63. Further, a groove portion 71 extending in the vertical direction is formed on the inner peripheral surface of the cylinder portion 63. Here, the lower end of the groove portion 71 is connected to the inner diameter side of the oil supply port 63 b provided so as to penetrate the inside and outside of the cylinder portion 63. Further, the groove portion 71 is formed to extend to the upper end 63 a of the cylinder portion 63.

  Next, the operation | movement at the time of forming a coil using the winding apparatus 2 is demonstrated.

  The rectangular wire 10 is disposed so as to contact the rectangular contact portion 61 a of the main body portion 61. Then, oil is supplied to the inner peripheral side of the cylinder part 63 by supplying oil to the oil supply port 63b.

  Thereafter, the oil rises along the groove portion 71 provided on the inner peripheral surface of the cylinder portion 63 and is discharged from an oil discharge port 71 a provided at the upper end 63 a of the cylinder portion 63. That is, oil is discharged from the upper end 63 a of the cylinder portion 63 toward the square line 10.

  Then, after the square wire 10 is clamped by the flange 62 and the square wire 10 is bent by the bending piece 12, the flange 62 brings the square wire 10 into an unclamped state. And while sending out the square wire 10 wound in the bobbin shape arrange | positioned spaced apart from the shaft 51, oil is supplied to the oil supply port 63b. In this way, the coil is formed by repeating the processing of the rectangular wire 10 while continuously applying the oil to the rectangular wire 10.

  In this way, oil for application to the square wire 10 can be transmitted using the groove portion 71 provided in the cylinder portion 63. By applying oil immediately before coiling the square wire 10, the amount of oil applied to the square wire 10 can be easily adjusted and the thickness of the oil film can be stabilized. Further, when it is easier to provide the groove portion 71 on the inner peripheral side of the cylinder portion 63 than in the case where the main body portion 61 is provided with the groove portion on the outer peripheral side, the cost can be reduced.

  Note that the present invention is not limited to the above-described embodiment, and can be changed as appropriate without departing from the spirit of the present invention. For example, in the first embodiment, the above description has been made assuming that only one groove portion 31 is provided in the main body portion 21, but a plurality of groove portions 31 may be provided. In the second embodiment, the cylinder portion 63 may be provided with a plurality of groove portions 71. Moreover, you may form so that a groove part may be provided in both a main-body part and a cylinder part, respectively.

DESCRIPTION OF SYMBOLS 1 Winding device 2 Winding device 10 Square wire 11 Shaft 12 Bending piece 21 Main part 21a Square wire contact part 22 Flange 23 Cylinder part 23a Upper end 23b Oil supply port 31 Groove part 31a Oil discharge part 41 Oil film 51 Shaft 61 Main part 61a Square wire contact part 62 Flange 63 Cylinder part 63a Upper end 63b Oil supply port 71 Groove part 71a Oil discharge port

Claims (1)

A coil winding method for forming an edgewise coil by bringing a side surface of a square line into contact with a main body of a shaft,
The shaft is
The main body extending in the vertical direction;
A groove that transmits oil along the vertical direction,
A method of winding and twisting a coil that supplies oil from the groove to the square wire when the square wire is wound around the outer periphery of the main body.

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