Winding machine and end wire processing device equipped with the winding machine

Abstract

To provide a winding machine winding around the core pole of an inner rotor type motor, and a terminal wire processing device thereof, which have a simple structure and are highly versatile at the time of forming a crossover wire at the upper part of a core, and can perform terminal wire processing at the lower part of the core.SOLUTION: A winding machine M includes a rotation state switching device 4 that switches the rotation state of a core C, a wire rod holding device 2 that holds a wire rod W before the completion of winding to the pole or start of the winding, and a cutting device 5 that is provided with a cutting member 51 that cuts the wire rod W, and bringing the cutting member 51 closer to the wire rod W for which winding to the pole a has been completed or separating the cutting member 51 from the wire rod W, and the wire rod W is held by the wire rod holding device 2 at the time of winding to the core C, and the wire rod W is cut by the cutting device 5 after the winding has been completed, such that the terminal wire processing is performed inside a rotating member 31.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to a winding machine which winds wires around poles of a core of an inner rotor type motor, and a lead wire processing device for processing lead wires provided in the winding machine. [Background technology]

[0002] Conventionally, a core as shown in Fig. 6 has been used as the core of an inner rotor type motor having multiple poles protruding radially inward from a yoke that forms the outer periphery of DC brushless motors used in vehicle motors (for electric power steering and fuel pumps) and motors for electric tools. A widely used winding machine for winding wire around such a core is one that drives a nozzle that guides the wire up and down to oscillate the core in a rotational direction about its center as an axis.

[0003] In such a winding machine, when winding a wire around one pole and then winding another pole, it is necessary to hang the wire as a crossover wire across the crossover wire locking section and move the wire to the pole where the winding is to be performed next. In recent years, with the diversification of core applications, there is a demand to separately arrange the crossover wire and the winding lead-out section on both end faces of the core. Therefore, for example, the techniques described in Patent Documents 1 and 2 have been proposed as a method of hanging a crossover wire (lower crossover wire) below the core holder.

[0004] In the technology described in Patent Document 1, the winding machine is equipped with a crossover wire guide member, and after winding is completed, the crossover wire guide member is moved together with the nozzle in the radial direction of the workpiece so that the wire guiding portion of the crossover wire guide member is positioned at a predetermined position outside the crossover wire pin, and the workpiece is rotated so that the wire is passed through the crossover wire guide member to the crossover wire pin.

[0005] In the technique described in Patent Document 2, a plurality of through holes are formed in the outer peripheral wall of a cylindrical work holder, and a lower crossover wire forming unit is inserted and removed from the outside through these through holes to cross the wire.

[0006] However, all of the above techniques require complicated equipment and lack versatility.

[0007] As described above, since the formation of the lower crossover wire is difficult, a technique has been proposed in which the crossover wire is formed above the core and the terminal wire processing is performed below the core. For example, Patent Document 3 proposes an example of such a technique, in which a work holding jig for holding a work (core) includes a cylindrical holding main body having an open end for placing the work, and a plurality of wire support parts, and in the middle of the winding operation of the wire around the work, the wire is supported by one of the plurality of wire support parts and cut to form a lead-out part of the wire such as a start wire. [Prior art documents] [Patent documents]

[0008] [Patent Document 1] JP 2003-164124 A [Patent Document 2] Patent No. 6694621 [Patent Document 3] Patent No. 6747732 Summary of the Invention [Problem to be solved by the invention]

[0009] However, in the technology of Patent Document 3, for example, when forming three phases, namely, U phase, V phase, and W phase, it is necessary to provide wire support parts in at least three locations, which results in a complex structure and a lack of versatility.

[0010] Therefore, an object of the present invention is to provide a winding machine and its terminal wire processing device that, in a winding machine for winding wires around the poles of the core of an inner rotor type motor, has a simple structure, is highly versatile, and can process terminal wires below the core when forming jumper wires above the core. [Means for solving the problem]

[0011] In order to achieve the above object, the invention described in claim 1 comprises: In a winding machine for winding the poles of a core of an inner rotor type motor, a nozzle driving device for driving the nozzle to wind the wire; A winding indexing device that holds the core and indexes the core during winding, the winding indexing device including a core holder that holds the core and a core indexing motor that indexes the core; A rotation state switching device that switches the rotation state of the core; a wire holding device for holding the wire after winding around the poles or the wire before winding starts; a cutting device including a cutting member for cutting the wire, the cutting member being moved toward or away from the wire after winding around the poles; Equipped with The core holder is a rotating member formed in a cylindrical shape and connected to the core indexing motor, the rotating member having a window portion on a peripheral surface thereof for moving the cutting device closer to or away from the held wire; a core receiving member for holding a core, the core receiving member being disposed at an upper end of the rotating member so as to be rotatable relative to the rotating member; The wire holding device is attached to the rotating member, The rotation state switching device is A core rotating means for rotating the core; A switching means for switching between a first state in which the core is rotated and indexed by the core indexing motor via the rotating member and a second state in which the core is rotated by the core rotating means relative to the rotating member, The core rotating means is the core indexing motor, The switching means is a first switching means for switching between a state in which the core receiving member rotates together with the rotating member and a state in which the core receiving member cannot rotate even if the rotating member rotates; A second switching means connected to the rotating member and configured to switch between a state in which the core receiving member is rotated by driving the core indexing motor and a state in which the core receiving member cannot be rotated even if the core indexing motor is driven, in cooperation with the first switching means; Equipped with The core receiving member is formed with a first rotation limiting portion and a second rotation limiting portion, the first switching means includes a first rotation limiting device capable of inserting and removing a first limiting member into and from the first rotation limiting portion, the second switching means includes a second rotation limiting device capable of inserting and removing a second limiting member into the second rotation limiting portion, The wire is held by the wire holding device when winding the wire around the core, and is cut by the cutting device after winding is completed. In the first state The wire end is processed inside the rotating member. This technical means is used.

[0012] In the invention described in claim 2, in the winding machine described in claim 1, after winding around the core is completed, the wire is guided to the wire holding device by the nozzle, the wire is held by the wire holding device, and the wire is cut by the cutting device while being held by the wire holding device, thereby performing terminal wire processing. This technical means is used.

[0013] In the invention described in claim 3, in the winding machine described in claim 1, before starting winding around the core, the wire is guided to the wire holding device by the nozzle, the wire is held by the wire holding device, and after winding around the core is completed, the wire is cut by the cutting device, thereby performing end wire processing. This technical means is used.

[0018] Claim 4 In the invention described in claim 1 to claim 3 A terminal wire processing device provided in the winding machine according to any one of the above, comprising the core holder, the wire holding device, and the cutting device, This technical means is used. Effect of the Invention

[0019] According to the winding machine and end wire processing device of the present invention, after winding around the core is completed, the wire is guided to the wire holding device by the nozzle, held by the wire holding device, and cut by the cutting device while the wire is held by the wire holding device, thereby making it possible to perform end wire processing inside the rotating member. Since the rotation state switching device can switch the rotation state of the core between a first state and a second state, end wire processing can be performed with a device with a simple structure and high versatility. In particular, the device is suitable for use in winding thick wires (e.g., φ0.3 to 1.5 mm) for which it is difficult to perform entanglement by winding one end of the wire around a pin-shaped fixing part and fixing it. [Brief description of the drawings]

[0020] [Figure 1] FIG. 1 is an explanatory diagram showing a configuration of a winding machine according to a first embodiment, and is a top view of the winding machine as viewed from above. [Diagram 2] FIG. 2 is a side view of the winding machine as viewed from the right in FIG. [Diagram 3] FIG. 2 is a front view of the winding machine as viewed from below in FIG. [Figure 4] 4(a) is a perspective view showing the configuration of the terminal wire processing device, and FIG. 4(b) is a perspective view seen from the back side. [Diagram 5] FIG. [Figure 6] FIG. 2 is a perspective view showing an example of an inner rotor type core. [Figure 7] 7(a) is a partial cross-sectional view showing the winding process and the end wire processing process, FIG. 7(b) is a bottom view seen from below, and FIG. 7(c) is a partial cross-sectional view showing the state of the pole, the wire holding device, and the cutting device seen from the left in the figure. [Figure 8] 8(a) is a partial cross-sectional view showing the winding process and the end wire processing process, FIG. 8(b) is a bottom view seen from below, and FIG. 8(c) is a partial cross-sectional view showing the state of the pole, the wire holding device, and the cutting device seen from the left in the figure. [Figure 9]9(a) is a partial cross-sectional view showing the winding process and the end wire processing process, FIG. 9(b) is a bottom view seen from below, and FIG. 9(c) is a partial cross-sectional view showing the state of the pole, the wire holding device, and the cutting device seen from the left in the figure. [Figure 10] 10(a) is a partial cross-sectional view showing the winding process and the end wire processing process, FIG. 10(b) is a bottom view seen from below, and FIG. 10(c) is a partial cross-sectional view showing the state of the poles, the wire holding device, and the cutting device seen from the left in the figure. [Figure 11] 11(a) is a partial cross-sectional view showing the winding process and the end wire processing process, FIG. 11(b) is a bottom view seen from below, and FIG. 11(c) is a partial cross-sectional view showing the state of the pole, the wire holding device, and the cutting device seen from the left in the figure. [Figure 12] 12(a) is a partial cross-sectional view showing the winding process and the end wire processing process, FIG. 12(b) is a bottom view seen from below, and FIG. 12(c) is a partial cross-sectional view showing the state of the pole, the wire holding device, and the cutting device seen from the left in the figure. [Figure 13] 13(a) is a partial cross-sectional view showing the winding process and the end wire processing process, FIG. 13(b) is a bottom view seen from below, and FIG. 13(c) is a partial cross-sectional view showing the state of the pole, the wire holding device, and the cutting device seen from the left in the figure. [Figure 14] 14(a) is a partial cross-sectional view showing the winding process and the end wire processing process, FIG. 14(b) is a bottom view seen from below, and FIG. 14(c) is a partial cross-sectional view showing the state of the pole, the wire holding device, and the cutting device seen from the left in the figure. [Figure 15] 15(a) is a partial cross-sectional view showing the winding process and the end wire processing process, FIG. 15(b) is a bottom view seen from below, and FIG. 15(c) is a partial cross-sectional view showing the state of the poles, the wire holding device, and the cutting device seen from the left in the figure. [Figure 16] 16(a) is a partial cross-sectional view showing the winding process and the end wire processing process, FIG. 16(b) is a bottom view seen from below, and FIG. 16(c) is a partial cross-sectional view showing the state of the pole, the wire holding device, and the cutting device seen from the left in the figure. [Figure 17]17(a) is a partial cross-sectional view showing the winding process and the end wire processing process, FIG. 17(b) is a bottom view seen from below, and FIG. 17(c) is a partial cross-sectional view showing the state of the pole, the wire holding device, and the cutting device seen from the left in the figure. [Figure 18] Fig. 18(a) is an explanatory diagram showing the winding process and the end wire processing process. The upper diagram of Fig. 18(a) is a partial cross-sectional view, the lower left diagram is a partial cross-sectional view showing the state of the pole, the wire holding device and the cutting device as seen from the left in the diagram, and Fig. 18(b) and (c) are explanatory diagrams showing the process of holding the wire by the wire holding device. [Figure 19] 19(a) and 19(b) are perspective views showing the state of the lead wire processing device in the winding process and the lead wire processing process, respectively, where FIG. 19(a) corresponds to the perspective view of FIG. 4(a), and FIG. 19(b) corresponds to the perspective view of FIG. [Figure 20] 20(a) and 20(b) are perspective views showing the state of the lead wire processing device in the winding process and the lead wire processing process, respectively, where FIG. 20(a) corresponds to the perspective view of FIG. 4(a), and FIG. 20(b) corresponds to the perspective view of FIG. [Figure 21] 21(a) and 21(b) are perspective views showing the state of the lead wire processing device in the winding process and the lead wire processing process, respectively, where FIG. 21(a) corresponds to the perspective view of FIG. 4(a), and FIG. 21(b) corresponds to the perspective view of FIG. [Figure 22] 22(a) and 22(b) are perspective views showing the state of the lead wire processing device in the winding process and the lead wire processing process, respectively. [Diagram 23] FIG. 2 is a side view showing a first state of the rotation state switching device. [Figure 24] 11 is a side view showing a second state of the rotation state switching device. FIG. [Diagram 25] FIG. 11 is a perspective view showing an inner rotor type core after winding and end wire processing are completed. [Figure 26] 13A and 13B are side views showing a state of a winding machine in a winding process and a terminal wire processing process according to another embodiment. [Figure 27] 13A and 13B are side views showing a state of a winding machine in a winding process and a terminal wire processing process according to another embodiment. [Figure 28] FIG. 11 is a side view showing a modified example of a winding machine according to another embodiment. [Figure 29] FIG. 11 is a side view showing a modified example of a winding machine according to another embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0021] The winding machine according to the present invention will be described with reference to Fig. 1 to Fig. 4, taking as an example a winding machine for winding wires around the poles of a core of an inner rotor type motor. Here, the wire to be wound around the core is a thick wire (e.g., φ0.3 to 1.5 mm) that is difficult to knot as a terminal wire treatment.

[0022] The winding machine M is a winding machine for winding a wire W around a pole a of a core C of an inner rotor type motor.

[0023] As shown in Figure 1-4, the winding machine M includes a nozzle driving device 1 for winding a wire W, a wire holding device 2 for holding the wire after winding around the pole, a winding indexing device 3 for holding the core and indexing during winding, a rotation state switching device 4 for switching the rotation state of the core, a cutting device 5 for cutting the wire held by the wire holding device 2, and a control device (not shown) for controlling the operation of each device.

[0024] The nozzle driving device 1 includes a nozzle 10 for guiding the wire W, a nozzle holder 11 for holding the nozzle, a nozzle front-rear moving device 12, a nozzle left-right moving device 13, a nozzle up-down moving device 14, and a nozzle rotating unit 15.

[0025] The nozzle front-rear movement device 12 is mounted on a base D and includes a nozzle front-rear movement motor 12a, a nozzle front-rear movement ball screw 12b driven by the nozzle front-rear movement motor 12a, and a front-rear linear guide 12c connected to the nozzle front-rear movement ball screw 12b and moved horizontally forward and backward. Here, the "front-rear direction" refers to the X direction in the drawing.

[0026] The nozzle left-right movement device 13 is attached to the front-rear linear guide 12c and includes a nozzle left-right movement motor 13a, a nozzle left-right movement ball screw 13b driven by the nozzle left-right movement motor 13a, and a left-right linear guide 13c connected to the nozzle left-right movement ball screw 13b and moved horizontally left and right. Here, the "left-right direction" refers to the Y direction in the figure.

[0027] The nozzle left / right moving device 13 can be moved horizontally back and forth by the nozzle front / rear moving device 12.

[0028] The nozzle up-down movement device 14 is attached to the left-right linear guide 13c and includes a nozzle up-down movement motor 14a and a nozzle up-down movement timing belt 14b driven by the nozzle up-down movement motor 14a. Here, the "up-down direction" refers to the Z direction in the figure.

[0029] The nozzle up-down moving device 14 can be moved horizontally left and right by the nozzle left-right moving device 13.

[0030] The nozzle rotating unit 15 includes a rotating unit body 15a and a rotating means 15b attached to the rotating unit body 15a. The nozzle holder 11 is attached to the rotating means 15b, and the nozzle rotating unit 15 can rotate the nozzle holder 11 around a horizontal central axis of rotation to change its position.

[0031] The nozzle rotating unit 15 is attached to the nozzle up / down linear guide 14c of the nozzle up / down movement device 14 at the rotating unit body 15a, and can be moved up and down by the nozzle up / down movement device 14 via the nozzle up / down movement timing belt 14b.

[0032] The nozzle forward / backward moving device 12 and the nozzle left / right moving device 13 can move the nozzle rotating unit 15 in the horizontal direction (X direction and Y direction). The nozzle up / down moving device 14 can move the nozzle rotating unit 15 in the up / down direction (Z direction). The nozzle rotating unit 15 can rotate the nozzle 10 via the nozzle holder 11. Furthermore, the winding indexing device 3 can rotate or swing (R direction) the core C around the rotation axis A. In this way, the nozzle forward / backward moving device 12, the nozzle left / right moving device 13, the nozzle up / down moving device 14, the nozzle rotating unit 15, and the winding indexing device 3 work together to move the nozzle 10 in a combination of three directions, namely, the horizontal direction, the up / down direction, and the rotation direction around the horizontal rotation axis, relative to the base D, and further, the core C can be rotated or swing (R direction) around the rotation axis A to change the relative positional relationship with the nozzle 10.

[0033] As shown in FIG. 5, the wire holding device 2 includes a first holding member 21, a second holding member 22, and a driving means .

[0034] The wire holding device 2 is disposed on the bottom portion 31c of the rotating member 31 of the winding indexing device 3, at a position facing the window portion 31b in the base .

[0035] The first holding member 21 includes a columnar portion 21a extending upward, and a holding portion 21b formed from the tip of the columnar portion 21a.

[0036] The holding portion 21b extends from the tip of the columnar portion 21a toward the center of the rotating member 31, and is formed so as to be able to lock the wire W thereon.

[0037] The second holding member 22 is formed in a columnar shape having a hollow portion 22b. The columnar portion 21a of the first holding member 21 is inserted into the hollow portion 22b of the second holding member 22, and the second holding member 22 is formed to be movable up and down along the first holding member 21, and the tip portion 22a faces the lower surface 21c of the holding portion 21b of the first holding member 21. A compression spring 24 is disposed below the second holding member 22, which urges the second holding member 22 upward and assists in holding the wire W.

[0038] The driving means 23 is, for example, a cylinder, and is driven by a slide plate 25 connected to the upper end thereof. The second holding member 22 is driven in the vertical direction via a transmission portion 22c formed on the outer periphery of the second holding member 22, so that the tip portion 22a of the second holding member 22 approaches or moves away from the lower surface 21c of the holding portion 21b of the first holding member 21.

[0039] The winding indexing device 3 includes a core holder 30 and a core indexing motor 33 .

[0040] The core holder 30 includes a rotating member 31 and a core receiving member 32 disposed on the upper end of the rotating member 31 .

[0041] The rotating member 31 includes a cylindrical portion 31a rotatably connected to the core indexing motor 33, and a window portion 31b that opens along the circumferential direction is formed on the peripheral surface of the cylindrical portion 31a. The central axis of the cylindrical portion 31a coincides with the central axis A of the core indexing motor 33.

[0042] The window portion 31b allows the cutting member 51 to be inserted and removed, and also allows the state of the lead wire processing of the core C to be visually observed through the window portion 31b.

[0043] The core receiving member 32 includes a core receiving portion 32a that holds the core C, and a switching member 32b that is connected to the rotating member 31 via the core receiving portion 32a and a bearing 34 (Figure 20) and switches whether or not the core C rotates together with the rotating member 31.

[0044] The core receiving portion 32a holds the core C in a position where the rotation center of the core C coincides with the central axis A of rotation.

[0045] The switching member 32b has an upper surface formed in a disk shape, has a larger diameter than the rotating member 31, and protrudes outward from the rotating member 31.

[0046] First rotation limiting portions 32c are formed on the outer periphery of the switching member 32b in the form of grooves at equal intervals. In this embodiment, the first rotation limiting portions 32c are formed in nine locations at intervals of 40° corresponding to the number of poles a.

[0047] The switching member 32b is formed with second rotation limiting portions 32d, which are through holes arranged concentrically. The second rotation limiting portions 32d are formed at positions where the pins 42a of the second rotation limiting device 42 can be inserted and removed. In this embodiment, in order to make the opening positions of the window portions 31b correspond to the positions of the poles a, nine portions are formed at intervals of 40° corresponding to the number of poles a. Furthermore, if the second rotation limiting portions 32d are formed at twelve positions at intervals of 30°, it is possible to correspond to cores C with 6, 9, and 12 poles a in the case of three-phase winding, and versatility can be improved.

[0048] The core indexing motor 33 is connected to the rotating member 31, and can rotate or rotate back and forth (swing) the core receiving member 32 in the horizontal direction about the vertical rotation center axis A via the rotating member 31 (R direction).

[0049] The rotation state switching device 4 includes a first rotation limiting device 41 and a second rotation limiting device .

[0050] The first rotation limiting device 41 includes a pin 41a and a driving means 41b for moving the pin 41a forward and backward in a horizontal direction. The first rotation limiting device 41 is fixed to an attachment member extending from the base D, and is disposed at a position where the pin 41a can be inserted and removed from the first rotation limiting portion 32c. By inserting and removing the pin 41a into and from the first rotation limiting portion 32c, it is possible to switch between a state in which the core receiving member 32 rotates together with the rotating member 31, and a state in which the core receiving member 32 cannot rotate even if the rotating member 31 rotates. The first rotation limiting device 41 and the first rotation limiting portion 32c constitute a first switching means.

[0051] The second rotation limiting device 42 includes a pin 42a and a driving means 42b for vertically advancing and retracting the pin 42a. The second rotation limiting device 42 is fixed to the circumferential surface of the rotating member 31 and is disposed at a position where the pin 42a can be inserted and removed from the second rotation limiting portion 32d. The second rotation limiting device 42 cooperates with the first rotation limiting device 41 to insert and remove the pin 42a into and from the second rotation limiting portion 32d, thereby switching between a state where the core receiving member 32 rotates due to the driving of the core indexing motor 33 and a state where the core receiving member 32 cannot rotate even if the core indexing motor 33 is driven. The second rotation limiting device 42 and the second rotation limiting portion 32d constitute a second switching means.

[0052] The cutting device 5 is a device for cutting the wire W after the winding around the poles is completed, and includes a cutting member 51 and a driving device 52.

[0053] In this embodiment, the cutting member 51 is an air nipper having scissors at the tip of a rod-shaped member as a cutting part 51a that can be opened and closed. Here, the cutting member 51 is not limited to a scissors shape as long as it can cut the wire W, and may be configured, for example, to have a cutter at the tip of a rod-shaped member.

[0054] The driving device 52 is equipped with a driving mechanism capable of driving the cutting member 51 in the axial direction of the rod-shaped member and three axial directions perpendicular thereto, or in addition, in the circumferential direction.

[0055] The cutting device 5 is disposed adjacent to the winding indexing device 3 at a position where the cutting portion 51a can be inserted into or removed from the window portion 31b of the rotating member 31. This allows the cutting member 51 to approach or move away from the wire W held by the wire holding device 2.

[0056] A method for winding wire W around each pole a of core C of an inner rotor type motor using a winding machine M will be described below with reference to Figs. 6-25. Here, an example will be described in which winding is performed for three phases, U-phase, V-phase, and W-phase, in a three-phase motor. For simplicity, the nozzle driving device 1 is omitted from Figs. 19-22.

[0057] The shape of the core C is shown in Figure 6. The core C is an inner rotor type core, and poles a1-a9 for winding are provided at predetermined intervals from the yoke Y toward the inside in the radial direction. Slots SL are formed between adjacent poles. The upper end surface of the core C is provided with crossover wire locking portions K (K1-K9) that protrude upward to lock the crossover wires. During winding, the core C is fixed to a core receiving member 32.

[0058] 7 shows the state where the winding of the three poles a1, a4, and a7 that make up the U phase is completed. A crossover wire WK is stretched across the crossover wire locking part K. The nozzle 10 where the winding of the seventh pole a7 is completed is positioned below the core C with the nozzle holder 11 inserted into the core C and directly above the wire holding member 2.

[0059] At this time, as shown in Fig. 19 and Fig. 23, the pin 41a is not inserted into the first rotation limiting portion 32c, and the pin 42a is inserted into the second rotation limiting portion 32d. As a result, the core receiving member 32 is not allowed to rotate with respect to the rotating member 31, and the rotation of the core receiving member 32 is not restricted, so that the core C can be indexed by the core indexing motor 33. This is called the "first state". The window portion 31b is open on the cutting device 5 side, and opens 40° counterclockwise and 160° clockwise with respect to the cutting device 5 as viewed from above. The wire holding device 2 faces the window portion 31b, and is visible from the outside.

[0060] A tip 22a of the second holding member 22 and a holding portion 21b of the first holding member 21 are separated from each other, leaving a gap.

[0061] The tip of the cutting member 51 is located between the tip of the nozzle 10 and the wire holding member in the height direction, and is spaced outward from the wire W in the horizontal direction, and is located outside the window portion 31b.

[0062] 8, the nozzle 10 is driven to guide the wire W into the gap between the tip 22a of the second holding member 22 and the holding portion 21b of the first holding member 21. Then, the nozzle 10 is held in a state in which the wire W is engaged with the lower surface 21c of the holding portion 21b of the first holding member 21.

[0063] 9, the second holding member 22 is raised by the driving means 23, and the wire W is sandwiched and held between the tip 22a of the second holding member 22 and the holding portion 21b of the first holding member. In order to hold the wire W, a holding force greater than the tension applied to the wire W during winding is required. In this embodiment, a cylinder is used as the driving means 23 to strongly sandwich the wire W, and the wire W is sandwiched in a horizontal direction intersecting the tension direction of the wire W, so that the holding force for the wire W can be increased.

[0064] 10, the cutting part 51a is inserted from the window 31b toward the wire W by the driving device 52, and the wire W is cut by the cutting member 51 between the wire holding device 2 and the pole a7. The cut wire W remaining on the pole a7 side becomes a U-phase finish wire (WF wire), and the wire W whose end is held by the wire holding device 2 on the nozzle 10 side becomes a V-phase start wire (WS wire).

[0065] Here, the wire W between "U-phase WF and V-phase WS" and "V-phase WF and W-phase WS" may be held by the wire holding device 2 without being cut, and may be formed as a tap wire.

[0066] Next, the driving device 52 retracts the cutting portion 51a to a position where it will not collide with the rotating member 31, for example, outside the window portion 31b, and then, as shown in Fig. 11, the nozzle 10 is moved away from the wire holding device 2 in the radial direction of the core C so that the tip of the nozzle 10 approaches the center of the core C. Next, as shown in Fig. 12, while maintaining the state in which the V-phase start line (WS line) is held by the wire holding device 2, the core indexing motor 33 rotates the rotating member 31 by a predetermined angle (120° in this embodiment) in the R1 direction to index the second pole a2 that becomes the first pole of the V-phase.

[0067] 19 and 23, the core receiving member 32 cannot rotate relative to the rotating member 31, so that the core receiving member 32 rotates integrally with the rotating member 31 around the central axis A to index the core C, as shown in Fig. 20. At this time, the wire holding device 2 also rotates in the R1 direction together with the rotating member 31. As a result, the wire W is drawn out from the nozzle 10, but since the tip of the nozzle 10 is brought close to the center of the core C as shown in Fig. 11, the length of the wire W drawn out from the nozzle 10 can be shortened.

[0068] 21 and 24, the first rotation limiting device 41 is driven to insert the pin 41a into the first rotation limiting portion 32c, and the second rotation limiting device 42 is driven to remove the pin 42a from the second rotation limiting portion 32d. As a result, even if the core indexing motor 33 is driven, only the rotating member 31 rotates and the core receiving member 32 cannot rotate. This is called the "second state."

[0069] Next, as shown in Fig. 22, the rotating member 31 is rotated in the R2 direction by a predetermined angle (120° in this embodiment) by the core indexing motor 33. At this time, the nozzle 10 is raised while rotating so that no slack is generated in the wire W. This allows only the rotating member 31 to rotate, and the window portion 31b to return to its original position. Therefore, there is no need to provide mechanisms for holding the wire in multiple places as in the conventional technology.

[0070] Next, the second rotation limiting device 42 is driven to insert the pin 42a into the second rotation limiting portion 32d, and then the first rotation limiting device 41 is driven to remove the pin 41a from the first rotation limiting portion 32c. This results in the first state, and preparations for winding the wire W around the second pole a2 are completed. Also, by first inserting the pin 42a into the second rotation limiting portion 32d, it is possible to avoid a state in which the core receiving member 32 is not restricted by both the first rotation limiting device 41 and the second rotation limiting device 42.

[0071] After that, the nozzle 10 is raised and winding is performed on the second pole a2, which becomes the first pole of the V phase. First, the nozzle driving device 1 positions the nozzle 10 above the slot SL formed between the first pole a1 and the second pole a2 so that the tip of the nozzle 10 protrudes radially outward of the core C.

[0072] Next, the nozzle 10 is driven to move in a circular motion relative to the second pole a2 by combining reciprocating up and down movement (Z direction) in the slot SL by the nozzle up and down movement device 14 and swinging movement (R direction) about the rotation central axis A by the winding index device 3. Then, every time the wire W is wound around the second pole a2, the nozzle 10 is moved in the radial direction of the core C at a predetermined pitch (e.g., the diameter of the wire W) by the nozzle front-back movement device 12. In this way, the wire W is wound around the second pole a2.

[0073] When the winding of the second pole a2, which is the V-phase first pole, is completed, a crossover is formed to the next pole to be wound, which is the fifth pole a5, which is the V-phase second pole in this embodiment, and then indexing is performed.

[0074] 13, the nozzle driving device 1 changes the position of the nozzle 10 so that the tip of the nozzle faces downward, and the nozzle 10 is driven to lock the wire W at the crossover locking portion K. The rotation state switching device 4 switches to the first state, and the wire W is hung across the crossover locking portion K of the core C toward the next pole to be wound, which is the fifth pole a5, which is the V-phase second pole in this embodiment, to form the crossover.

[0075] Next, the rotation state switching device 4 switches to the second state, and the rotating member 31 is rotated in the R2 direction by the core indexing motor 33 as shown in Fig. 22. At this time, the nozzle 10 is raised while rotating so that no slack is generated in the wire W. As a result, only the rotating member 31 rotates, and the window portion 31b can be returned to its original position.

[0076] Next, the rotation state switching device 4 switches to the first state, and the fifth pole a5 is wound as shown in Fig. 14. Thereafter, the eighth pole a8 is similarly wound to form a V phase, and the third pole a3, the sixth pole a6, and the ninth pole a9 are wound to form a W phase.

[0077] 15 shows the state where the W-phase is formed and the winding of all poles is completed. At this time, the nozzle 10 is positioned below the slit SL between the first pole a and the ninth pole a9.

[0078] 16, the driving device 52 moves the tip of the cutting member 51 closer to the wire W, and the wire W is cut by the cutting member 51 without being held by the wire holding device 2. The cut wire W remaining on the pole a9 side becomes the W-phase finish wire (WF wire). Here, the wire W remaining on the nozzle 10 side remains facing upward because it is thick and has high rigidity.

[0079] Through the above steps, the winding for the pole a of the core C of the inner rotor type motor is completed, and the core C as shown in FIG. 25 is formed.

[0080] Next, as shown in FIG. 17, the nozzle 10 is moved to a position where it will not collide with the core C, and then moved upward, the core C with completed winding is removed, and a new core C is placed in the core receiving portion 32a of the core receiving member 32.

[0081] The remaining wire W on the nozzle 10 side becomes the U-phase start line (WS line) of the new core C. The start line of the new core C is held in the following process shown in FIG.

[0082] First, as shown in FIG. 18(a), the tip of the nozzle 10 is placed next to the gap between the tip 22a of the second holding member 22 and the holding portion 21b of the first holding member.

[0083] 18(b), the tip of the nozzle 10 is moved so as to pass through the gap between the tip 22a of the second holding member 22 and the holding portion 21b of the first holding member. At this time, the wire W that was facing upward is pushed down by the corner of the holding portion 21b of the first holding member, and the wire W passes through the gap.

[0084] 18(c), the second holding member 22 is raised by the driving means 23, and the wire W (start wire of the U phase) can be sandwiched and held between the tip 22a of the second holding member 22 and the holding portion 21b of the first holding member. Thereafter, similar to the process described above, the winding of the first pole of the U phase can be performed, and then the windings of the remaining poles of the U phase, the V phase, and the W phase can be performed.

[0085] The end wire processing process shown in Figure 16-18 can be applied not only when all winding of core C is completed and replaced with a new core C, but also in place of the end wire processing process (Figure 7-11) when, for example, winding of the U phase is completed and winding of the V wire begins. In the end wire processing process shown in Figure 16-18, the starting wire can be shortened, so the amount of wire used can be reduced, and in the end wire processing process shown in Figure 7-11, the takt time can be shortened.

[0086] In this embodiment, the core indexing motor 33 corresponds to the core rotating means, the first rotation limiting device 41 and the first rotation limiting unit 32c correspond to the first limiting means (first switching means), and the second rotation limiting device 42 and the second rotation limiting unit 32d correspond to the second limiting means (second switching means).

[0087] The core holder 30, the wire holding device 2 and the cutting device 5 can be used as a terminal wire processing device that can be attached to an existing winding machine.

[0088] (Example of change) The wire holding device 2 is not limited to the above embodiment as long as it can firmly hold the wire W, and any known means can be used as a holding means for clamping and holding the wire W.

[0089] (Effects of the embodiment) According to the winding machine and the end wire processing device of the present invention, after the winding around the core C is completed, the wire W is guided to the wire holding device 2 by the nozzle 10, the wire is held by the wire holding device 2, and the wire is cut by the cutting device 5 while the wire W is held by the wire holding device 2, so that the end wire processing can be performed inside the rotating member 30. Since the rotation state switching device 4 can switch the rotation state of the core C between the first state and the second state, the end wire processing can be performed with a device with a simple structure and high versatility. In particular, the end wire processing can be suitably used when winding a thick wire (e.g., φ0.3 to 1.5 mm) in which it is difficult to perform entanglement by winding one end of the wire around a pin-shaped fixing part and fixing it. In addition, since there is no need to change the attitude of the nozzle 10, it can also be applied to a small core C.

[0090] (Other embodiments) Other embodiments of the winding machine will be described with reference to Figures 26 to 29. Note that the same components as those in the winding machine M of the first embodiment are given the same reference numerals, and the description thereof will be omitted.

[0091] The winding machine M2 of this embodiment is equipped with a rotating motor 61 for rotating the core receiving member 35, and a switching means for switching between a state in which the core receiving member 35 rotates when the core indexing motor 33 is driven, and a state in which the core receiving member 35 cannot rotate even when the core indexing motor 33 is driven.

[0092] The core receiving member 35 includes a core receiving portion 35a that holds the core C, and a switching member 35b that is connected to the rotating member 31 via the core receiving portion 35a and a bearing 34 and switches whether or not the core C rotates together with the rotating member 31.

[0093] The switching member 35b has a disk-shaped upper surface, has a larger diameter than the rotating member 31, and protrudes outward from the rotating member 31. Gear teeth 35c are formed on the outer periphery of the switching member 35b.

[0094] The switching member 35b is formed with a rotation limiting portion 35d, which is a through hole arranged concentrically. The rotation limiting portion 35d is formed at a position where the pin 42a of the second rotation limiting device 42 can be inserted and removed.

[0095] The rotary motor 61 is made up of a motor body 61a and a gear 61b, and the motor moving cylinder 62 functions as a moving means for moving the rotary motor 61 toward or away from the switching member 35b.

[0096] The gear 61b is positioned at a height where it meshes with the gear teeth 35c of the switching member 35b, and the motor moving cylinder 62 can switch between a meshed state and a non-meshed state between the gear 61b and the gear teeth 35c of the switching member 35b.

[0097] In the first state of this embodiment, as shown in Fig. 26, the pin 42a is inserted into the rotation limiting portion 35d. This makes the core receiving member 35 unable to rotate relative to the rotating member 31, and the rotating member 31 and the core receiving member 35 can be rotated integrally by the core indexing motor 33, making it possible to index the core C. Here, the rotation motor 61 is not disposed in the rotating member 31, so there is no resistance to the rotation of the rotating member 31 by the core indexing motor 33.

[0098] In the second state of this embodiment, as shown in Fig. 27, the pin 42a is removed from the rotation limiting portion 35d. Also, the motor moving cylinder 62 moves the rotation motor 61 so that the motor gear 61b meshes with the gear teeth 35c of the switching member 35b. When the core indexing motor 33 is stopped and the rotation motor 61 is driven, only the core receiving member 35 can be rotated while the rotating member 31 is stopped. This allows only the core C to be rotated while the position of the window portion 31b remains unchanged.

[0099] In this embodiment, the rotary motor 61 corresponds to a core rotating means, and the second rotation limiting device 42 and the second rotation limiting portion 35d correspond to a third limiting means.

[0100] In the first embodiment, one motor and two switching means are used, whereas in this embodiment, two motors and one switching means are used, and the same effects can be achieved.

[0101] (Example of change) After winding, the rotating member 31 and the core receiving member 35 can be rotated together by the core indexing motor 33 while the pin 42a is inserted into the rotation limiting portion 35d, as shown in FIG. 26. When returning the window portion 31b to its original position, the pin 42a is removed from the rotation limiting portion 35d, and the motor moving cylinder 62 moves the rotating motor 61 to a state in which the motor gear 61b meshes with the gear teeth 35c of the switching member 35b, as shown in FIG. 27. Then, the core receiving member 32 is prevented from rotating by the holding torque of the motor 61, and the rotating member 31 is rotated in the opposite direction to the previous rotation direction by the core indexing motor 33. This allows only the rotating member 31 to rotate, and the window portion 31b to return to its original position.

[0102] In this modified example, the core indexing motor 33 corresponds to the core rotating means, and the second rotation limiting device 42, the second rotation limiting portion 35d and the rotation motor 61 correspond to the third limiting means.

[0103] It is also possible to adopt a configuration that does not include the motor moving cylinder 62. As shown in Fig. 28, the rotary motor 61 may be disposed on the rotating member 31 so that the motor gear 61b and the gear teeth 35c of the switching member 35b are in mesh with each other. Furthermore, if the core receiving member 32 does not rotate due to the holding torque of the motor 61 even if the second rotation limiting device 42 does not make the core receiving member 35 rotatable, it is also possible to adopt a configuration that does not include the second rotation limiting device 42, as shown in Fig. 29. [Explanation of symbols]

[0104] 1...Nozzle drive device 10…Nozzle 11...Nozzle holder 12...Nozzle front-rear moving device 13...Nozzle left / right movement device 14...Nozzle up / down movement device 15…Nozzle rotating unit 2...Wire holding device 21...First holding member 21a...Columnar part 21b...Holding part 21c…Bottom surface 22...Second holding member 22a...Tip 22b...Hollow part 22c...Transmission section 23...Drive means 24…Slide plate 26…Bass 3…Winding index device 30…Core holder 31... Rotating member 31a...Cylindrical part 31b…Window section 31c...Bottom 32...Core support member 32a…Core receiving part 32b...Switching member 32c…First rotation limiter 32d…Second rotation limiting section 33...Core indexing motor 34…Bearing 35...Core support member 35a…Core receiving part 35b...Switching member 35c…tooth 35d...Rotation limiting section 4...Rotation state switching device 41…First rotation limiting device 41a…Pin 41b...Drive means 42…Second rotation limiting device 42a…pin 42b...Drive means 5...Cutting device 51...Cutting member 51a…cutting part 52...Drive unit 61...Rotation motor 61a…Motor body 61b...Motor gear 62...Motor moving cylinder C: Core a... Extreme D…Pedestal K: Crossover wire locking part M…Winding machine W…Wire rod

Claims

1. In a winding machine for winding the poles of a core of an inner rotor type motor, a nozzle driving device for driving the nozzle to wind the wire; A winding indexing device that holds the core and indexes the core during winding, the winding indexing device including a core holder that holds the core and a core indexing motor that indexes the core; A rotation state switching device that switches the rotation state of the core; a wire holding device for holding the wire after winding around the poles or the wire before winding starts; a cutting device including a cutting member for cutting the wire, the cutting member being moved toward or away from the wire after winding around the poles; Equipped with The core holder is a rotating member formed in a cylindrical shape and connected to the core indexing motor, the rotating member having a window portion on a peripheral surface thereof for moving the cutting device closer to or away from the held wire; a core receiving member for holding a core, the core receiving member being disposed at an upper end of the rotating member so as to be rotatable relative to the rotating member; The wire holding device is attached to the rotating member, The rotation state switching device is A core rotating means for rotating the core; a switching means for switching between a first state in which the core is rotated and indexed by the core indexing motor via the rotating member and a second state in which the core is rotated relatively to the rotating member by the core rotating means; The core rotating means is the core indexing motor, The switching means is a first switching means for switching between a state in which the core receiving member rotates together with the rotating member and a state in which the core receiving member cannot rotate even if the rotating member rotates; a second switching means connected to the rotating member and configured to switch between a state in which the core receiving member is rotated by driving the core indexing motor and a state in which the core receiving member cannot be rotated even when the core indexing motor is driven, in cooperation with the first switching means; Equipped with The core receiving member is formed with a first rotation limiting portion and a second rotation limiting portion, the first switching means includes a first rotation limiting device capable of inserting and removing a first limiting member into and from the first rotation limiting portion, the second switching means includes a second rotation limiting device capable of inserting and removing a second limiting member into and from the second rotation limiting portion, a wire holding device that holds the wire when winding the wire around the core, and a cutting device that cuts the wire after winding is completed, thereby performing terminal wire processing inside the rotating member in the first state.

2. 2. The winding machine according to claim 1, characterized in that after winding around the core is completed, the wire is guided to the wire holding device by the nozzle, the wire is held by the wire holding device, and the wire is cut by the cutting device while being held by the wire holding device, thereby performing terminal wire processing.

3. 2. The winding machine according to claim 1, characterized in that before winding around the core is started, the wire is guided to the wire holding device by the nozzle, the wire is held by the wire holding device, and after winding around the core is completed, the wire is cut by the cutting device, thereby performing end wire processing.

4. 4. A wire end treatment device provided in the winding machine according to claim 1, comprising: said core holder, said wire rod holding device, and said cutting device.

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