JP2008198955A - Winding method and winding device - Google Patents

Abstract

An object of the present invention is to wind a wire rod in a line with no gap on the reel regardless of the difference in supply angle of a plurality of wires relative to the axis of the reel.
When two wires 2 supplied from two nozzles 11 and 12 arranged in parallel with each other are wound around the bobbin 3 in alignment, every time the two wires 2 are wound around the bobbin 3 once. The two nozzles 11 and 12 are integrally moved in the A-axis direction (X-axis direction) of the bobbin 3 to change the lanes of the two wires 2, and in accordance with the lane change, two of the bobbins 3 with respect to the A-axis. The relative positions of the two nozzles 11 and 12 are changed so that the supply angles θs of the wires 2 are the same.
[Selection] FIG.

Description

  The present invention relates to a winding body (coil unit) assembled to a stator core of a concentrated winding motor, and relates to a winding method and a winding device for winding a wire rod supplied from a nozzle to manufacture the winding body around a winding frame. .

  Conventionally, as this type of technology, for example, “winding device and winding method” described in Patent Document 1 below is known. This patent document 1 describes a winding device that winds a plurality of wire rods fed from a plurality of nozzles around an outer periphery of a core that rotates around an axis. This winding apparatus includes a rotation driving means for rotating a plurality of nozzles around a rotation axis parallel to the nozzles, and the plurality of nozzles hold the winding frame in an axial direction shifted by a width equal to the diameter of the wire rod. As a result, a plurality of wire rods are wound around the winding frame in alignment without any gaps.

Japanese Patent No. 3140729 Japanese Patent Application Laid-Open No. 2004-328962 JP 2004-119922 A JP 2000-348959 A

  By the way, in the technique described in Patent Document 1, when the wire is wound perpendicularly to the axis of the winding frame, that is, when the supply angle of the wire with respect to the winding frame is set to a right angle, the nozzle is set to a width equal to the diameter of the wire. By displacing, gaps in the wire can be eliminated. However, when the wire is wound obliquely with respect to the axis of the winding frame, that is, when the supply angle of the wire is smaller than a right angle, if the nozzle is shifted by a width equal to the diameter of the wire, the space between the wires is opened. Also, in the section where the wire rods are rearranged (lane change) on the reel, the wire feed angle is different from the zone where no lane change is performed, and if the relative position of each nozzle is kept constant, the spacing between the wire rods It will change further. In such a case, there is a concern that the wire rod (winding) wound around the winding frame cannot have a high space factor, and the quality robustness of the winding is impaired.

  The present invention has been made in view of the above circumstances, and the object thereof is to wind the wire in alignment with no gap on the reel regardless of the difference in the supply angle of the plurality of wires relative to the axis of the reel. It is an object of the present invention to provide a winding method and a winding device that are made possible.

  In order to achieve the above object, the invention according to claim 1 is a winding method in which a plurality of wire rods supplied from a plurality of nozzles arranged in parallel with each other are wound around the outer periphery of a winding frame. Each time the wire is wound around the reel, the plurality of nozzles are moved integrally in the axial direction of the reel to change the plurality of wires, and the plurality of wires are supplied to the reel axis in accordance with the change of the reel. The purpose is to change the relative positions of the plurality of nozzles so that the angles are the same.

  According to the configuration of the above invention, each time a plurality of wire rods are wound around the winding frame once, the plurality of nozzles are integrally moved in the axial direction of the winding frame, and the plurality of wire rods are rearranged. In accordance with the replacement, the relative positions of the plurality of nozzles are changed so that the supply angles of the plurality of wires relative to the axis of the winding frame are the same. Therefore, since the relative positions of the plurality of nozzles are changed so that the supply angles of the plurality of wire rods are the same regardless of the movement of the plurality of nozzles, the winding frame is in a state where the plurality of wire rods are in contact with each other and aligned. To be supplied.

  In order to achieve the above object, a winding apparatus according to a second aspect of the present invention includes a plurality of nozzles for supplying a plurality of wire rods to the winding frame, and the plurality of nozzles integrally moving in the axial direction of the winding frame. Moving means, rotating means for rotating the plurality of nozzles integrally around a predetermined axis, and moving means and rotating means so that the supply angles of the plurality of wires relative to the axis of the reel are the same The control means for controlling is provided.

  According to the configuration of the invention, the control unit controls the moving unit and the rotating unit, so that the plurality of nozzles move integrally in the axial direction of the winding frame, and the plurality of nozzles rotate around the predetermined axis. Thereby, the supply angles of the plurality of wire rods are kept the same, and the plurality of wire rods are supplied to the reel in a state where they are in contact with each other in parallel.

  In order to achieve the above object, according to a third aspect of the present invention, in the second aspect of the present invention, the control means includes a winding position on the winding frame of the plurality of wires and a position of the plurality of nozzles with respect to the winding frame. The purpose is to control the rotating means based on the relationship.

  According to the configuration of the above invention, in addition to the action of the invention according to claim 2, the plurality of wire rods are wound on the winding frame in a predetermined winding manner, but the control unit turns the rotation unit into the winding of the plurality of wire rods. Since the control only needs to be performed based on the winding position on the frame and the positional relationship of the plurality of nozzles with respect to the winding frame, the control content becomes relatively simple.

  In order to achieve the above object, the invention according to claim 4 is the invention according to claim 2 or 3, wherein the control means includes a plurality of control means in a section where the plurality of wires are not rearranged on the reel. In the section where the plurality of nozzles are stopped in the axial direction of the winding frame and the rotation positions of the plurality of nozzles are kept constant and the plurality of wire rods are rearranged, the plurality of nozzles are moved in the axial direction of the winding frame and the plurality of nozzles The purpose is to control the moving means and the rotating means so as to change the rotational position.

  According to the configuration of the above invention, in addition to the operation of the invention described in claim 2 or 3, it is only necessary to perform the movement of the nozzle and the change of the rotation position of the nozzle only in the section in which a plurality of wires are rearranged.

  According to the first aspect of the present invention, it is possible to wind the wire around the winding frame in a line without any gap regardless of the difference in the supply angle of the plurality of wires relative to the axis of the winding frame.

  According to the second aspect of the present invention, it is possible to wind the wire around the winding frame in alignment without any gap regardless of the difference in the supply angle of the plurality of wires relative to the axis of the winding frame.

  According to the invention described in claim 3, in addition to the effect of the invention described in claim 2, it is easy to cope with high-speed control, and it is possible to cope with high-speed aligned winding.

  According to the invention described in claim 4, in addition to the effect of the invention described in claim 2 or 3, it is possible to further contribute by increasing the speed of the alignment winding.

  Hereinafter, an embodiment in which a winding method and a winding device according to the present invention are embodied in a rectangular coil unit of a concentrated winding stator core will be described in detail with reference to the drawings.

  FIG. 1 is a perspective view showing a rectangular coil unit 1 according to this embodiment. FIG. 2 is a front view of the rectangular coil unit 1. The rectangular coil unit 1 is manufactured by simultaneously winding two wires 2 forming a pair on the four outer peripheral surfaces of a bobbin 3 having a rectangular cross section. The rectangular coil unit 1 is assembled to each of a plurality of teeth formed on the inner periphery of a concentrated winding stator core having an annular shape, thereby forming a stator. A motor is manufactured by assembling the rotor into the hollow portion of the stator. The bobbin 3 corresponds to the winding frame of the present invention, and the wire 2 corresponds to the wire rod of the present invention.

  The bobbin 3 includes a cylindrical portion 3a (see FIGS. 6 and 8) having a rectangular cross section, and a first flange portion 3b and a second flange portion 3c formed at both axial ends of the cylindrical portion 3a. In the first flange 3b located on the rear side, an insulating wall 3e and a winding portion 3f are formed corresponding to the upper cutout portion 3d. The cylinder part 3a includes a hollow part 3g. The bobbin 3 is formed of a synthetic resin material such as PPS (polyphenylene sulfide) and has an insulating property. A rectangular coil 4 is formed on the outer periphery of the cylindrical portion 3a by winding the two wires 2 in a plurality of layers in an aligned manner. Part of both end portions of the two wires 2 are hooked on the insulating wall 3e and the winding portion 3f. In this embodiment, a relatively thick wire 2 is used to reduce the size and increase the output of the motor. The wire 2 is configured by covering a copper wire with an enamel insulating film.

  In the rectangular coil unit 1 described above, the two wires 2 are sequentially inserted on the outer periphery of the cylindrical portion 3a between the first flange portion 3b and the second flange portion 3c by being inserted inside the first flange portion 3b. As a result, the first layer of the coil 4 is formed. Thereafter, the wire 2 is folded at the second hook 3c, and the two wires 2 are sequentially wound in a row on one layer from the second hook 3c to the first hook 3b, whereby 2 of the coil 4 is obtained. A layer is formed. Thus, the two wires 2 are reciprocated along the axial direction of the cylindrical portion 3a and wound in alignment, whereby a plurality of rows and a plurality of layers of coils 4 are formed. The ends of the two wires 2 that have been wound are inserted into and fastened to the winding portion 3f. As described above, the rectangular coil unit 1 including the rectangular coil 4 is manufactured.

  FIG. 3 is a side view showing the coil 4 wound around the bobbin 3. FIG. 4 is a rear view of the coil 4 wound around the bobbin 3. FIGS. 5A to 5D show an A view, a B view, a C view, and a D view in FIG. 3, respectively. As shown in FIGS. 3 to 5, in this embodiment, the wire 2 at the lower crossing portion of the upper crossing portion and the lower crossing portion, which are parallel surfaces forming a pair of upper and lower sides, of the outer peripheral four surfaces of the cylindrical portion 3 a of the bobbin 3. The two wires 2 are aligned and wound so that the lane change for 1.5 wires of the wire 2 is performed at the upper part (lane change). Hereinafter, this winding method is referred to as “1.5-0.5 change”). As a result, while the bobbin 3 is turned by one turn, two lanes are changed at the upper and lower parts of the bobbin 3.

  That is, as shown by attaching “1” to the wire 2 in FIGS. 3, 4, and 5 (a), the two wires 2 that have started to be wound from the top are formed on the cylindrical portion 3 a of the bobbin 3. Of the four outer peripheral surfaces, the left flat winding portion and the right flat winding portion, which are parallel planes forming a pair of left and right, are wound vertically along the first flange portion 3b at the left flat winding portion and reach the lower crossing portion. Next, as shown by attaching “1” to the wire 2 in FIG. 5B at the underpass, a lane change is performed diagonally by 0.5 wires 2 and the right flat winding Wrapped vertically at the part to reach the upper part. Next, as shown in FIG. 5A with “1” and “2” in the wire 2, the lane change is performed diagonally by 1.5 wires 2. Then, it is wound again vertically in the left flat winding part and reaches the lower part. Thereafter, the first layer of the coil 4 is formed by repeatedly performing the lane change at the lower part and the upper part in the same manner as described above (in FIG. 5A and FIG. 5B, the first layer is the wire 2 is indicated with a number “1-6”.) When the winding of the first layer is finished, it is folded back on the opposite side of the winding start position, and as shown in FIG. 5 (b), 0.5 wires 2 in the downward direction are opposite to the first layer. Lane changes are made for as many minutes. After that, as shown in FIG. 5A, the lane change is performed for 1.5 wires 2 in the direction opposite to the first layer in the upper portion.

  Here, FIG. 6 shows a cross-sectional view taken along line XX of FIG. FIG. 7 is an enlarged schematic diagram showing the arrangement of the wires 2 in the chain circle S1 in FIG. FIG. 8 is a cross-sectional view taken along line YY in FIG. FIG. 9 is an enlarged schematic view showing the arrangement of the wires 2 in the chain circle S2 in FIG. As shown in FIG. 6, at the upper transition part Pg1 and the lower transition part Pg2 of the cylindrical part 3a of the bobbin 3, as shown in FIG. Accordingly, in the upper transition part Pg1 and the lower transition part Pg2, as shown in FIG. 7, when the diameter of the wire 2 is “φ”, the wires 2 of each layer are stacked by the diameter φ. . On the other hand, as shown in FIG. 8, the wire 2 is wound in a stacked manner as shown in FIG. 9 at the left side flat wound part Pf <b> 1 and the right side flat wound part Pf <b> 2 of the cylindrical part 3 a of the bobbin 3. Accordingly, as shown in FIG. 9, the wires 2 of each layer are stacked in increments of “φ × Cos 30 °” in the left flat winding portion Pf <b> 1 and the right flat winding portion Pf <b> 2. Thus, the change in the thickness of the wound layer is slightly different between the crossover portions Pg1 and Pg2 and the flat winding portions Pf1 and Pf2.

  Next, a winding method and a winding apparatus for producing the rectangular coil unit 1 as described above will be described. FIG. 10 shows a schematic side view of the winding device. FIG. 11 is a front view schematically showing the winding device. In this embodiment, the wires 2 supplied from the two nozzles 11 and 12 arranged in parallel vertically are concentrated on the bobbin 3 and wound in alignment. The bobbin 3 is configured such that the hollow portion 3 g described above is fitted into a predetermined rotation shaft 13 and can rotate integrally with the rotation shaft 13. When the wire 2 is wound around the bobbin 3, the rotary shaft 13 is rotated at a constant speed by a predetermined drive mechanism (not shown). Hereinafter, the rotation angle of the rotation shaft 13 and the bobbin 3 is referred to as “A-axis angle”. The two nozzles 11 and 12 are held by a cylindrical holder 14, and the holder 14 is configured to be movable along the X axis parallel to the axis (A axis) of the bobbin 3 via the first drive mechanism 15. Is done. The first drive mechanism 15 is driven by the first motor 16. By the movement of the holder 14, the two nozzles 11 and 12 are configured to be movable in the X-axis direction integrally. Hereinafter, the movement position of the holder 14 is referred to as an “X-axis position”. The holder 14, the first drive mechanism 15, and the first motor 16 are the moving means of the present invention for integrally moving the two nozzles 11, 12 in the axial direction (A-axis direction) of the bobbin 3, that is, the X-axis direction. Equivalent to. The holder 14 is configured to be rotatable about its axis (B axis) via the second drive mechanism 17. The second drive mechanism 17 is driven by the second motor 18. By rotating the holder 14, the two nozzles 11 and 12 are configured to be rotatable about the B axis integrally with the holder 14. Hereinafter, the rotation angle of the holder 3 is referred to as “B-axis angle”. The holder 14, the second drive mechanism 17, and the second motor 18 correspond to the rotation means of the present invention for integrally rotating the two nozzles 11, 12 around a predetermined axis (B axis). The tips of the nozzles 11 and 12 are disposed below the bobbin 3 and directly below the bobbin 3. With this arrangement, the wire 2 led out from the tips of the nozzles 11 and 12 is wound in a state substantially perpendicular to the bobbin 3 in a side view. Each motor 16, 18 is connected to a controller 19.

  The controller 19 controls the motors 16 and 18 in order to move and rotate the holder 14 at a predetermined timing in accordance with a change in the rotation angle of the rotary shaft 13, that is, the A-axis angle. The controller 19 controls the motors 16 and 18 so that the supply angle θs (see FIG. 11) of the two wires 2 with respect to the axis (A axis) of the bobbin 3 is substantially the same. It corresponds to.

  In FIG. 10, a pair of long sides positioned above and below the bobbin 3 shown in a substantially rectangular shape are the flat winding portions Pf1 and Pf2 constituting a part of the outer peripheral surface, and a pair of short sides positioned on the left and right are the outer peripheral surface. Are crossing portions Pg1, Pg2. The rotation angle (A-axis angle) when the bobbin 3 is turned one turn is also the rotation angle of the rotation shaft 13 with respect to the perpendicular Lv extending in the vertical direction.

  FIG. 13 is a graph showing changes in the X-axis position and the B-axis angle with respect to the A-axis angle change. FIG. 13 shows the behavior of the holder 14 when the wire 2 is wound around the bobbin 3 by a little less than 4 turns. In FIG. 13, the horizontal axis indicates “A-axis angle”, and the vertical axis indicates “X-axis position” and “B-axis angle”, respectively. The upper broken line indicates a change in the B-axis angle, that is, a change in the rotation angle of the holder 14. A lower broken line indicates a change in the X-axis position, that is, the position of the holder 14 on the X-axis. As can be seen from FIG. 13, the X-axis position of the holder 14 is once in the plus direction in each of the transition from 1 turn to 2 turns, 2 turns to 3 turns, and 3 turns to 4 turns. After being displaced by a predetermined distance a1, it is returned in a minus direction by a predetermined distance “b1” shorter than “a1”.

  That is, in the first turn, the X-axis position of the holder 14 is not changed while the A-axis angle is “0 to 180 °”, and the holder 14 is changed while the A-axis angle is “180 to 270 °”. The X-axis position of the holder 14 is displaced in the plus direction by the distance a1, and the X-axis position of the holder 14 returns in the minus direction by the distance b1 while the A-axis angle becomes “270 to 360 °”. Thereafter, in the second turn, the A-axis angle is “360 to 720 °”, and in the third turn, the A-axis angle is “720 to 1080 °”. It shows the same behavior as above. Here, in each turn, when the X-axis position of the holder 14 is displaced by the distance a1 in the plus direction, the “lane change portion” in which the lane change of the two wires 2 is performed.

  In this embodiment, the B-axis angle of the holder 14 changes according to the displacement of the X-axis position of the holder 14 described above. That is, in each turn, when the X-axis position of the holder 14 is displaced in the plus direction by the distance a1, the B-axis angle of the holder 14 rotates in the plus direction by the predetermined angle θ1, and the X-axis position of the holder 14 is in the minus direction. When returning to the distance b1, the B-axis angle of the holder 14 returns in the minus direction by a predetermined angle θ1.

  Then, along with the behavior of the X-axis position and B-axis angle of the holder 14 described above, the two nozzles 11 and 12 supported by the holder 14 are displaced together with the holder 14 in the X-axis direction and centered on the B-axis. The relative position will be changed. That is, in this embodiment, every time the two wires 2 are wound around the bobbin 3, the two nozzles 11 and 12 are moved integrally in the A-axis direction (X-axis direction) of the bobbin 3, The wire 2 is lane-changed, and the relative positions of the two nozzles 11 and 12 are changed in accordance with the lane change so that the supply angle θs of the two wires 2 with respect to the A axis of the bobbin 3 are the same. It has become.

  FIG. 14 is a diagram illustrating changes in the X-axis position and the B-axis angle with respect to changes in the A-axis angle, and the behavior of the bobbin 3, the holder 14, and the nozzles 11 and 12. FIG. 14 is a graph showing the behavior of the X-axis position and the B-axis angle corresponding to the change of the A-axis angle (0 to 360 °) when the wire 2 is wound around the bobbin 3 by one turn, and the bobbin corresponding to the behavior 3, behaviors of the holder 14 and the nozzles 11 and 12 are shown in FIGS.

  14, in the state where the A-axis angle is “0 °”, as shown in FIG. 14A, the arrangement direction of the nozzles 11 and 12 (the direction of the straight line passing through the centers of the nozzles 11 and 12 in FIG. 14). Is inclined counterclockwise by a predetermined angle θb with respect to the vertical. For example, “5 to 6 °” is applied as the angle θb. This state of tilting in the counterclockwise direction is the “initial state”. At this time, the upper nozzle 11 is displaced to the left side from the B axis, and the lower nozzle 12 is displaced to the right side from the B axis. In this initial state, the arrangement direction of the upper and lower nozzles 11 and 12 is inclined counterclockwise by a predetermined angle θb, while the two wires 2 drawn from the nozzles 11 and 12 are in contact with each other in parallel. This is because the wires 2 are supplied at a supply angle θs perpendicular to the bobbin 3.

  Thereafter, when the A-axis angle reaches “90 °”, the bobbin 3 rotates “90 °” as shown in FIG. 14B, but the state of the holder 14 and the nozzles 11 and 12 does not change. That is, there is no change in the X-axis position and the B-axis angle. Next, when the A-axis angle reaches “180 °”, the bobbin 3 rotates “180 °” as shown in FIG. 14C, but the state of the holder 14 and the nozzles 11 and 12 changes as described above. Absent.

  When the A-axis angle becomes “270 °”, as shown in FIG. 14D, the bobbin 3 rotates “270 °”, and the holder 14 and the nozzles 11 and 12 have the X-axis position and the B-axis angle. Changes. In this state, the holder 14 has its X-axis position displaced to the plus side as shown in FIGS. 9A to 9C, and its B-axis angle shown in FIGS. It is rotating by a predetermined angle clockwise from the state. In the state shown in FIG. 14D, the arrangement direction of the nozzles 11 and 12 is inclined clockwise by a predetermined angle θc with respect to the vertical. That is, in the state shown in FIG. 14D, the holder 14 is rotated clockwise compared to the initial state, and the relative positions of the upper and lower nozzles 11 and 12 are thereby changed. Here, the upper nozzle 11 is displaced to the right side from the B axis, and the lower nozzle 12 is displaced to the left side from the B axis. The state shown in FIG. 14D is the same as the state shown in FIG. 11, and the arrangement direction of the nozzles 11 and 12 is inclined clockwise by a predetermined angle θc with respect to the vertical, so that the A axis of the bobbin 3 Is set to a predetermined value (for example, “81 °”).

  Thereafter, when the A-axis angle becomes “360 °”, as shown in FIG. 14E, the bobbin 3 rotates “360 °”, and the holder 14 and each of the nozzles 11 and 12 have the X-axis position and the B-axis angle. Changes. In this state, the X-axis position of the holder 14 is slightly displaced to the minus side as shown in FIG. 4D, and the B-axis angle returns to the initial state shown in FIGS. Yes.

  13 and 14 show a part of the process of winding the two wires 2 around the bobbin 3. The same process as above is repeated until the wire 2 is wound around the outer periphery of the bobbin 3 by the first layer. Thereafter, the same process as described above is repeated until the wire is folded at one end of the bobbin 3 and the second layer of the wire 2 is wound in alignment. The same applies to the third and subsequent layers.

  As described above, the controller 19 controls the motors 16 and 18 so that the supply angles θs of the two wires 2 with respect to the A axis of the bobbin 3 are the same. The controller 19 controls the second motor 18 based on the winding position of the two wires 2 on the bobbin 3 and the positional relationship between the two nozzles 11 and 12 with respect to the bobbin 3. Here, the “winding position” means four surfaces on the outer periphery of the bobbin 3, that is, the flat winding portions Pf1 and Pf2 and the crossover portions Pg1 and Pg2. Further, the controller 19 moves the two nozzles 11 and 12 to the A of the bobbin 3 during a section where the lane change of the two wires 2 is not performed on the bobbin 3 (A-axis angle is “0 to 180 °”). While stopping in the axial direction, that is, the X-axis direction, the rotational positions of the two nozzles 11 and 12 are kept constant. On the other hand, in the section where the lane change of the two wires 2 is performed (A-axis angle is “180 to 270 °”), the two nozzles 11 and 12 are moved in the X-axis direction and the two nozzles 11 and 12 are rotated. The motors 16 and 18 are controlled so as to change the position.

  According to the winding method of this embodiment described above, every time the two wires 2 are wound around the bobbin 3, the two nozzles 11 and 12 move in the A-axis direction of the bobbin 3 (the X-axis direction of the holder 14). ), The lane change of the two wires 2 is performed. In accordance with the lane change, the relative positions of the two nozzles 11 and 12 are changed so that the supply angle θs of the two wires 2 with respect to the A axis of the bobbin 3 is the same. Accordingly, the relative positions of the two nozzles 11 and 12 are changed so that the supply angles θs of the two wires 2 are the same regardless of the movement of the two nozzles 11 and 12 in the X-axis direction. As shown in FIG. 2, the two wires 2 are supplied to the bobbin 3 in a state where they are aligned in parallel with each other. As shown in an enlarged view of the chain line circle S3 in FIG. 11 in FIG. 12, there is no “gap” between the two wires 2. For this reason, the two wires 2 can be wound around the bobbin 3 without any gap regardless of the difference in the supply angle θs of the two wires 2 with respect to the A axis of the bobbin 3. As a result, the winding (coil) formed by winding the wire 2 around the bobbin 3 can have a high space factor, and the coil quality robustness can be ensured.

  FIG. 15 shows the state of the wire 2 when only the X-axis position is moved to the plus side without changing the B-axis angle of the holder 14, unlike FIG. FIG. 16 shows an enlarged view of the chain line circle S4 of FIG. 15, and is compared with FIG. As can be seen from FIGS. 15 and 16, simply changing the X-axis position of the holder 14 does not make the supply angles of the two wires 2 the same, and the two wires 2 do not become parallel to each other. A “gap” is formed between the two wires 2. This is because even if one of the wires 2 is intended to be brought to the target position, the other wire 2 is deviated from the target position. Since a “gap” is formed between the two wires 2, the coil is unwound. From the comparison between FIGS. 11 and 12 and FIGS. 15 and 16, the effect of the winding method of this embodiment is clear.

  Further, according to the winding device of this embodiment, the controller 19 controls the motors 16 and 18 so that the two nozzles 11 and 12 are also in the A-axis direction of the bobbin 3 (also in the X-axis direction of the holder 14). ) And the two nozzles 11 and 12 rotate around the B axis of the holder 14. Thus, the supply angles θs of the two wires 2 are kept the same, and the two wires 2 are supplied to the bobbin 3 in a state where they are in contact with each other in parallel. For this reason, the two wires 2 can be wound around the bobbin 3 without any gap regardless of the difference in the supply angle θs of the two wires 2 with respect to the A axis of the bobbin 3. As a result, the winding (coil) formed by winding the wire 2 around the bobbin 3 can have a high space factor, and the coil quality robustness can be ensured.

  In this embodiment, the two wires 2 are wound in alignment on the bobbin 3, but the controller 19 sets the second motor 18 to 2 in order to change the relative position of the two nozzles 11 and 12. Since the control only needs to be performed based on the winding position of the wire 2 on the bobbin 3 and the positional relationship of the nozzles 11 and 12 with respect to the bobbin 3, the control content is relatively simple. For this reason, it is easy to cope with high-speed control, and it is possible to cope with high-speed alignment winding.

  In this embodiment, as the control of the controller 19, the movement of the nozzles 11 and 12 and the change of the rotational position of the nozzles 11 and 12 may be performed only in the section where the lane change of the two wires 2 is performed. In this sense, the control contents of the motors 16 and 18 by the controller 19 become simpler, can be easily handled by high-speed control, and further contribute to the speeding up of the alignment winding.

  In addition, this invention is not limited to the said embodiment, A part of structure can also be changed suitably and implemented in the range which does not deviate from the meaning of invention.

  For example, in the above embodiment, the case where two wires 2 are wound around the bobbin 3 at the same time has been described. However, the number of wires wound around the bobbin may be three or more.

The perspective view which shows a rectangular coil unit. The front view which shows a rectangular coil unit. The side view which shows the coil wound around the bobbin. The rear view which shows the coil wound around the bobbin. (A)-(d) is A view, B view, C view, and D view in FIG. XX sectional drawing of FIG. The schematic diagram which expands and shows the wire arrangement | sequence in the chain line circle | round | yen of FIG. The YY sectional view taken on the line of FIG. The schematic diagram which expands and shows the wire arrangement | sequence in the chain line circle | round | yen of FIG. The side view which shows the outline of a winding apparatus. The front view which shows the outline of a winding apparatus. The figure which expands and shows the inside of the chain line circle | round | yen of FIG. The time chart which shows the change of the X-axis position with respect to A-axis angle change and B-axis angle. Explanatory drawing which shows the behavior of a change of a X-axis position and a B-axis angle, a holder, each nozzle, etc. The side view which shows the outline of a winding apparatus. The figure which expands and shows the inside of the chain line circle | round | yen of FIG.

Explanation of symbols

2 Wire (Wire)
3 Bobbins (reel)
4 Coil 11 Nozzle 12 Nozzle 14 Holder (moving means, rotating means)
15 First drive mechanism (moving means)
16 First motor (moving means)
17 Second drive mechanism (rotating means)
18 Second motor (rotating means)
19 Controller (control means)
θs Supply angle

Claims (4)

In a winding method in which a plurality of wires supplied from a plurality of nozzles arranged in parallel to each other are wound around the outer periphery of a winding frame in an alignment,
Each time the plurality of wire rods are wound around the winding frame once, the plurality of nozzles are integrally moved in the axial direction of the winding frame to rearrange the plurality of wire rods, and the winding according to the rearrangement. A winding method, wherein the relative positions of the plurality of nozzles are changed so that the supply angles of the plurality of wires relative to the axis of the frame are the same. A plurality of nozzles for supplying a plurality of wires to the reel;
Moving means for integrally moving the plurality of nozzles in the axial direction of the reel;
A rotating means for rotating the plurality of nozzles integrally around a predetermined axis;
A winding device comprising: control means for controlling the moving means and the rotating means so that supply angles of the plurality of wires relative to the axis of the winding frame are the same. The said control means controls the said rotation means based on the winding position on the said winding frame of these wire rods, and the positional relationship of these nozzles with respect to the said winding frame, The said rotation means is controlled. Winding device. The control means stops the plurality of nozzles in the axial direction of the winding frame and keeps the rotation positions of the plurality of nozzles constant in a section where the plurality of wire rods are not rearranged on the winding frame. In the section where the plurality of wire rods are rearranged, the moving unit and the rotating unit are controlled so that the plurality of nozzles are moved in the axial direction of the winding frame and the rotational positions of the plurality of nozzles are changed. The winding device according to claim 2 or 3, characterized in that.

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