JP7634366B2 - Winding machine and end wire processing device equipped with the winding machine - Google Patents

Description

The present invention relates primarily to a winding machine that winds wire around the poles of the core of an inner rotor type motor, and a terminal wire processing device for processing the terminal wires provided on the winding machine.

Conventionally, a core like that shown in Figure 5 has been used as the core of an inner rotor type motor with 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 winding machine that winds wire around such a core is widely used, in which a nozzle that guides the wire is driven up and down to oscillate the core in a rotational direction about its center.

In such winding machines, when winding a pole and then winding another pole, it is necessary to hang the wire as a jumper wire across the jumper wire locking section and then move the wire to the pole where winding will be performed. In recent years, with the diversification of core applications, there is a demand to place the jumper wire and the winding lead-out section separately 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 jumper wire (lower jumper wire) below the core holder.

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 to position the wire guide portion of the crossover wire guide member at a predetermined position outside the crossover wire pin, and the workpiece is rotated to pass the wire through the crossover wire guide member to the crossover wire pin.

In the technology described in Patent Document 2, multiple through holes are formed in the outer 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.

However, all of the above technologies require complex equipment and lack versatility.

As described above, since forming the lower jumper wire is difficult, a technique has been proposed in which the jumper wire is formed at the top of the core and the terminal wire processing is performed at the bottom of the core. For example, Patent Document 3 proposes a terminal wire processing method in which a work holding jig that holds a work (core) is provided with a cylindrical holding main body with an open end on which the work is placed, and multiple wire support parts, and in the middle of the process of winding the wire around the work, the wire is supported by one of the multiple wire support parts and cut to form a pull-out part of the wire, such as a start wire.

JP 2003-164124 A Patent No. 6694621 Patent No. 6747732

However, terminals are provided at the bottom of the core, and end wire processing, which involves winding and fixing the wire around the terminal ("tangling") or crimping the wire to the terminal ("crimping"), is done manually after the core is removed from the winding machine after winding is complete, and it was not possible to perform such end wire processing inside the winding machine.

The present invention aims to provide a winding machine that winds wire around the poles of the core of an inner rotor motor, and a winding end wire processing device that has a simple structure and is highly versatile when forming a jumper wire at the top of the core, and that can perform end wire processing to fix the wire to the terminal at the bottom of the core inside the winding machine.

In order to achieve the above object, the present invention provides:
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 that holds the wire after winding around the poles or before winding begins;
A cutting device for cutting the wire rod;
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 disposed outside the rotating member, and a wire holding member for holding a wire is operable inside the rotating member through the window portion;
The cutting device is disposed outside the rotating member, and a cutting member for cutting the wire is configured to be operable inside the rotating member through the window portion,
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 terminal treatment for fixing a wire to a terminal provided on an end surface of the core is performed inside the rotating member in the first state;
This technical means is used.

In the invention described in claim 2, in the winding machine described in claim 1,
a wire holding member is used to wrap the wire around the terminal and to entangle the wire with the terminal, thereby performing a wire end treatment;
This technical means is used.

In the invention described in claim 3, in the winding machine described in claim 1,
a wire end processing step of driving the nozzle to guide the wire to a hook portion provided on the terminal in order to crimp the wire, and crimping the hook portion to which the wire has been guided by a wire holding member of the wire holding device to fix the wire to the terminal;
This technical means is used.

According to a fourth aspect of the present invention, there is provided a terminal wire processing device for use with the winding machine according to any one of the first to third aspects, the terminal wire processing device including the core holder, the wire holding device, and the cutting device,
This technical means is used.

The winding machine and end wire processing device of the present invention can switch the rotation state of the core between a first state and a second state by the rotation state switching device, and the wire holding device and cutting device provided outside the rotating member have a simple structure and high versatility, and the end wire can be processed inside the winding machine through the window of the rotating member without removing the core from the winding machine. It can also be used effectively when winding thick wires (e.g., φ0.3 to φ0.3 to 1.5 mm) that are difficult to process the end wire on the terminal.

FIG. 2 is an explanatory diagram showing the configuration of the winding machine according to the first embodiment, and is a top view of the winding machine as viewed from above. FIG. 2 is a side view of the winding machine as viewed from the right in FIG. FIG. 2 is a front view of the winding machine as viewed from below in FIG. 4A and 4B are perspective views showing the configuration of a terminal wire processing device, respectively as seen from the front side and rear side. FIG. 2 is a perspective view showing an example of an inner rotor type core. 6(a) is a partial cross-sectional view showing the state of the poles, the wire holding device, and the cutting device as viewed from the left in the figure, and FIG. 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 poles, the wire holding device, and the cutting device seen from the left in the figure. 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. 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 poles, the wire holding device, and the cutting device seen from the left in the figure. 10(a) is a partial cross-sectional view showing a winding process and a terminal 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 pole, the wire holding device, and the cutting device seen from the left in the figure. 11(a) is a partial cross-sectional view showing a winding process and a terminal 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. 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 poles, the wire holding device, and the cutting device seen from the left in the figure. 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 poles, the wire holding device, and the cutting device seen from the left in the figure. 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 poles, the wire holding device, and the cutting device seen from the left in the figure. 15(a) is a partial cross-sectional view showing a winding process and a terminal 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. 16A is a partial cross-sectional view showing a winding process and a lead wire processing process, and FIG. 16B and FIG. 16C are explanatory views showing a process of performing lead wire processing using a wire holding device and a cutting device. 17(a) and 17(b) are perspective views showing a state of the lead wire processing device in a winding process and a lead wire processing process, respectively. 18(a) and 18(b) are perspective views showing a state of the lead wire processing device in a winding process and a lead wire processing process, respectively. 19(a) and 19(b) are perspective views showing a state of the lead wire processing device in a winding process and a lead wire processing process, respectively. 20(a) and 20(b) are perspective views showing a state of the lead wire processing device in a winding process and a lead wire processing process, respectively. FIG. 2 is a side view showing a first state of the rotation state switching device. FIG. 4 is a side view showing a second state of the rotation state switching device. 23(a) is a partial cross-sectional view showing the state of the poles, the wire holding device, and the cutting device as viewed from the left in the figure, and FIG. 24(a) is a partial cross-sectional view showing the winding process and the end wire processing process, FIG. 24(b) is a bottom view seen from below, and FIG. 24(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. 25(a) is a partial cross-sectional view showing the winding process and the end wire processing process, FIG. 25(b) is a bottom view seen from below, and FIG. 25(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. 26(a) is a partial cross-sectional view showing the winding process and the end wire processing process, FIG. 26(b) is a bottom view seen from below, and FIG. 26(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. 27(a) 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 figure, and Fig. 27(b) and (c) are explanatory views showing the process of changing the direction of the wire by the wire holding device. 28(a) is a partial cross-sectional view showing the winding process and the end wire processing process, FIG. 28(b) is a bottom view seen from below, and FIG. 28(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. 29(a) is a partial cross-sectional view showing the winding process and the end wire processing process, FIG. 29(b) is a bottom view seen from below, and FIG. 29(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. 13A and 13B are side views showing the state of a winding machine in a winding process and a terminal wire processing process according to another embodiment. 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. FIG. 11 is a side view showing a modified example of a winding machine according to another embodiment. FIG. 11 is a side view showing a modified example of a winding machine according to another embodiment.

The winding machine according to the present invention will be described with reference to Figures 1-4, taking as an example a winding machine that winds wire around the poles of the 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.

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

As shown in Figure 1-4, the winding machine M includes a nozzle driving device 1 for winding the wire W, a wire holding device 2 for holding the wire after winding around the poles, 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.

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-back movement device 12, a nozzle left-right movement device 13, a nozzle up-down movement device 14, and a nozzle rotation unit 15.

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 figure.

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.

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

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.

The nozzle up/down movement device 14 can be moved horizontally left and right by the nozzle left/right movement device 13.

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

The nozzle rotation unit 15 is attached to the nozzle up/down linear guide 14c of the nozzle up/down movement device 14 in the rotation 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.

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 center 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: horizontal, up/down, and rotational direction relative to the horizontal rotation center axis relative to the base D, and further, the core C can be rotated or swing (R direction) around the rotation center axis A to change its relative positional relationship with the nozzle 10.

As shown in FIG. 4, the wire holding device 2 includes a wire holding member 21 and a drive device 22 for the wire holding member 21.

The wire holding device 2 is adjacent to the cutting device 5 and is positioned so that the wire holding member 21 can be inserted and removed through the window portion 31b of the rotating member 31.

The wire holding member 21 is configured with a clamp 21b that can be opened and closed at the tip of a rod-shaped member 21a. The wire holding member 21 is positioned below the cutting member 51.

The drive device 22 is equipped with a drive mechanism capable of driving the wire holding member 21 in the axial direction of the rod-shaped member 21a and three axial directions perpendicular thereto, or in addition, in the circumferential direction.

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

The core holder 30 comprises a rotating member 31 and a core receiving member 32 arranged at the upper end of the rotating member 31.

The rotating member 31 has a cylindrical portion 31a that is rotatably connected to the core indexing motor 33, and a window portion 31b that opens in 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 rotation of the core indexing motor 33.

The window portion 31b allows the wire holding member 21 and cutting member 51 to be inserted and removed, and the terminal wire processing state of the core C can be seen through this window portion 31b.

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 21) and switches whether the core C rotates together with the rotating member 31 or not.

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

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

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

The switching member 32b is formed with a second rotation limiting portion 32d, which is a through hole arranged concentrically. The second rotation limiting portion 32d is formed at a position where the pin 42a of the second rotation limiting device 42 can be inserted and removed. In this embodiment, in order to make the opening position of the window portion 31b correspond to the position of the pole a, nine portions are formed at 40° intervals corresponding to the number of poles a. Furthermore, if the second rotation limiting portion 32d is formed at 12 locations at 30° intervals, it can be used with cores C with 6, 9, or 12 poles a when winding in three phases, thereby increasing versatility.

The core indexing motor 33 is connected to the rotating member 31, and can rotate the core receiving member 32 horizontally around the vertical rotation center axis A via the rotating member 31, or perform a rotary reciprocating motion (swing) (R direction).

The rotation state switching device 4 includes a first rotation limiting device 41 and a second rotation limiting device 42.

The first rotation limiting device 41 includes a pin 41a and a drive means 41b that moves the pin 41a forward and backward horizontally. The first rotation limiting device 41 is fixed to an attachment member extending from the base D, and is positioned 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 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.

The second rotation limiting device 42 includes a pin 42a and a drive means 42b for vertically advancing and retracting the pin 42a. The second rotation limiting device 42 is fixed to the peripheral 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 in which the core receiving member 32 rotates when driven by the core indexing motor 33 and a state in which the core receiving member 32 cannot rotate even when 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.

The cutting device 5 is a device for cutting the wire W after winding around the poles, and is equipped with a cutting member 51 and a driving device 52.

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

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

The cutting device 5 is adjacent to the winding indexing device 3 and is positioned so that the cutting portion 51a can be inserted and 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.

Below, 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 explained with reference to Figure 5-22. Here, an example will be explained in which three phases, U-phase, V-phase, and W-phase windings are performed in a three-phase motor. Note that for simplicity, the nozzle driving device 1 has been omitted from Figure 17-20.

Figure 5 shows the shape of the core C after winding is completed. The core C is an inner rotor type core, and poles a1-a9 for winding from the yoke Y toward the radially inward direction are provided at a predetermined interval. Slots SL are formed between adjacent poles. A jumper wire locking portion K (K1-K9) for locking the jumper wire is provided on the upper end surface of the core C and protrudes upward, and a terminal P (P1-P6) for fixing the wire W as terminal wire processing is provided on the lower end surface and protrudes downward. Here, terminal wire processing includes "entanglement" in which the wire W is wound around the terminal P, and "crimping" in which the wire W is crimped and fixed to a part of the terminal P. The terminal P is formed with an entanglement portion Pk for entanglement of the wire W and a hook portion Pf for guiding and crimping the wire W. In the first embodiment, a case where entanglement is performed as terminal wire processing will be described. When winding three phases, three sets of six terminals P1-P6 are provided below poles a1, a2, a3, a7, a8, and a9 to correspond to the start and finish lines of the three phases U, V, and W, respectively. During winding, core C is fixed to core support member 32.

Figure 6 shows the state where the windings of the three poles a1, a4, and a7 that make up the U phase are completed. A jumper wire WK is stretched across the jumper wire locking part K. The nozzle 10 where the winding of the seventh pole a7 is completed is positioned with its tip adjacent to the terminal P.

The cutting section 51a of the cutting device 50 and the clamp 21b of the wire holding member 21 are located outside the window portion 31b. Here, the cutting section 51a and the clamp 21b may be spaced apart to a position where they do not interfere with the nozzle 10 or the rotating member 31.

In this embodiment, the tip of clamp 21b has one end that protrudes like a hook and the other end that has a recess that corresponds to the protruding portion. As a result, when the wire W is held, even if tension is generated in the wire W that exceeds the holding force of the clamp, the wire W is engaged with the hook-shaped portion, so that the wire W can be prevented from coming off clamp 21b.

At this time, as shown in Figures 17 and 21, 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 unable to rotate relative to the rotating member 31, and the rotation of the core receiving member 32 is not restricted, allowing the core C to be indexed by the core indexing motor 33. This is called the "first state." The window portion 31b opens on the cutting device 5 side, and opens 40° counterclockwise and 160° clockwise from above, based on the cutting device 5. The wire holding device 2 faces the window portion 31b, and is visible from the outside.

Next, as shown in FIG. 7, the core C is rotated 20° in the first state so that the nozzle 10 is positioned below the terminal P4 provided below the seventh pole a7. Then, while holding the wire W, the clamp 21b is driven so that the wire W circles around the terminal P, passing the wire W through the hook portion Pf and entangling the wire W with the terminal P. After that, the nozzle 10 is moved to a position below the cutting portion 51a and the clamp 21b.

Next, as shown in FIG. 8, the driving device 52 and the driving device 22 move the cutting portion 51a of the cutting device 5 and the clamp 21b of the wire holding member 21 to positions where they can clamp the wire W. After the wire W is clamped and held by the clamp 21b of the wire holding member 21, the cutting portion 51a of the cutting device 50 cuts the wire W between the clamp 21b and the terminal P4. After the wire W is cut, the cutting portion 51a is retracted. The cut wire W remaining on the terminal P4 side becomes the U-phase finish line (WF line), and the wire W whose end is held by the clamp 21b on the nozzle 10 side becomes the V-phase start line (WS line).

Next, as shown in FIG. 9, the cutting portion 51a is retracted, and the wire W is held by the clamp 21b of the wire holding device 2. As shown in FIG. 18, the core indexing motor 33 rotates the rotating member 31 in the R1 direction by a predetermined angle (160° in this embodiment), and the core C is indexed so that the nozzle 10 is positioned below the terminal P2 corresponding to the second pole a2, which is the first pole of the V phase. Here, as shown in FIG. 17 and FIG. 21, since the core receiving member 32 cannot rotate with respect to the rotating member 31, the core receiving member 32 is rotated around the central axis A together with the rotating member 31 to index the core C.

Then, clamp 21b is retracted away from nozzle 10, and nozzle 10 is positioned horizontally outward of terminal P2 and vertically between clamp 21b and terminal P.

Next, as shown in FIG. 10, the nozzle 10 is moved above the entangling portion Pk of the terminal P, and then the clamp 21b is driven to circle around the terminal P, performing end wire processing to entangle the wire W to the terminal P. Here, the entangled wire W is fixed to the terminal P by fusing after the core C is removed, so it is sufficient for the wire W to have a holding force that can withstand the tension caused by the winding. For this reason, entangling can be used as end wire processing even when winding thick wire (e.g., φ0.3 to 1.5 mm).

Next, as shown in FIG. 11, the cutting section 51a is advanced toward the wire W to cut the wire W. The cut wire W held by the clamp 21b becomes unnecessary wire, and is disposed of as a discarded wire after the clamp 21b is retracted.

Next, as shown in Figures 19 and 22, 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."

After switching to the second state by the rotation state switching device 4, as shown in FIG. 20, the core indexing motor 33 rotates the rotating member 31 in the R2 direction by a predetermined angle (160° in this embodiment). This causes only the rotating member 31 to rotate, and the window portion 31b can be returned to its original position.

Then, 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 complete. 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 either the first rotation limiting device 41 or the second rotation limiting device 42.

Then, as shown in FIG. 12, the nozzle 10 is raised and winding is performed on the second pole a2, which is 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 from the core C.

Then, the nozzle 10 is driven to move in a circle relative to the second pole a2 by combining reciprocating up and down movement (Z direction) within the slot SL by the nozzle up and down movement device 14 and oscillation (R direction) around the central axis of rotation A by the winding index device 3. Then, each time the wire W is wound around the second pole a2, the nozzle 10 is moved in the radial direction of the core C by a predetermined pitch (e.g., the diameter of the wire W) by the nozzle front-back movement device 12. This winds the wire W around the second pole a2.

When winding of the second pole a2, which is the first pole of the V phase, is completed, a crossover wire is formed to the next pole to be wound, which in this embodiment is the fifth pole a5, which is the second pole of the V phase, and then the wire is indexed.

To form the jumper wire, the nozzle driving device 1 changes the position of the nozzle 10 above the core C so that the tip of the nozzle faces downward, and the nozzle 10 is driven to lock the wire W into the jumper wire locking part K. The rotation state switching device 4 switches to the first state, and the jumper wire is formed by hanging the wire W over the jumper wire locking part K of the core C toward the next pole to be wound, which in this embodiment is the fifth pole a5, which is the second pole of the V phase.

Then, the rotation state switching device 4 switches to the second state, and the core indexing motor 33 rotates the rotating member 31 in the R2 direction as shown in FIG. 20. 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, returning the window portion 31b to its original position.

Next, as shown in FIG. 13, the fifth pole a5 and the eighth pole a8 are wound to form the V phase, and then the third pole a3, the sixth pole a6, and the ninth pole a9 are wound to form the W phase. Once the winding of each phase is completed, the state is changed to the second state, and the window portion 31b is returned to its original position. Next, the wire W is wound around the terminal P in the same manner as in FIG. 7.

Next, as shown in FIG. 14, the cutting part 51a is advanced to cut the wire W directly below the terminal P6. Through the above process, the winding for the pole a of the core C of the inner rotor type motor is completed, and the core C is formed as shown in FIG. 5.

Then, as shown in FIG. 15, the cutting member 51 is retracted. The wire W remaining on the nozzle 10 side remains facing upward because it is thick and has high rigidity. The nozzle 10 is moved to a position where it will not collide with the core C, and then moved upward to remove the core C with the completed winding, and a new core C is placed in the core receiving portion 32a of the core receiving member 32.

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 place by the following process shown in Figure 16.

First, as shown in FIG. 16(a), the clamp 21b of the wire holding member 21 is advanced to clamp and hold the wire W extending upward from the tip of the nozzle 10.

Next, as shown in FIG. 16(b), similar to FIG. 10, the nozzle 10 is moved above the entanglement portion Pk of the terminal P, and then the clamp 21b is driven to circle around the terminal P, performing terminal wire processing to entangle the wire W to the terminal P.

Next, as shown in FIG. 16(c), the cutting part 51a is advanced to cut the wire W directly below the terminal P1. This completes the terminal wire processing of the U-phase start wire.

In this embodiment, the core indexing motor 33 corresponds to the core rotation 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).

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.

(Example of change)
In FIG. 7, the end wire is treated by entangling using a nozzle 10, but it can also be treated by using a wire holding device 2 as shown in FIG.

(Effects of the First Embodiment)
According to the winding machine and end wire processing device of the first embodiment, the rotation state of the core C can be switched between a first state and a second state by the rotation state switching device 4, and therefore the wire holding device 2 and the cutting device 5 provided outside the rotating member 31 have a simple structure and are highly versatile, and end wire processing can be performed inside the winding machine M through the window 31b of the rotating member 31 without removing the core from the winding machine. Also, it can be suitably used when winding a thick wire (e.g., φ0.3 to 1.5 mm) for which end wire processing is difficult for a terminal.

Second Embodiment
As a second embodiment of the winding machine of the present invention, a configuration for crimping and fixing a wire W to a terminal P will be described as an end wire processing. Note that the same reference numerals are used for the same components as those in the first embodiment, and the description thereof will be omitted.

In the winding machine of the second embodiment, the wire holding device 7 has a different configuration for clamping the wire W from the wire holding device 2 of the first embodiment. As shown in FIG. 23, the wire holding device 7 is equipped with a wire holding member 71 and a driving means capable of driving the wire holding member 71 in the axial direction and three axial directions perpendicular thereto, or in the circumferential direction.

The wire holding device 7 is adjacent to the cutting device 5, and the wire holding member 71 is positioned above the cutting member 51 in such a position that it can be inserted and removed through the window portion 31b of the rotating member 31.

The wire holding member 71 has a first holding member 72 and a second holding member 73 that are formed in a roughly rod-like shape.

The first holding member 72 has a pressing portion 72a formed in a hook shape at its tip.

The first holding member 72 is formed so as to be capable of horizontal movement along the second holding member 73, and the pressing portion 72a of the first holding member 72 faces the tip portion 73a. The first holding member 72 can be driven in the horizontal direction by a linearly driving means such as a cylinder.

This allows the pressing portion 72a of the first holding member 72 to approach or move away from the tip portion 73a of the second holding member 73, and allows anything between the tip portion 73a of the second holding member 73 and the pressing portion 72a of the first holding member 72 to be clamped and pressed. In this way, the wire holding member 71 in this embodiment can hold the wire W and also crimp it to the terminal P.

Next, the winding process and the process of crimping the wire W will be described. Figure 23 shows the state after winding of the three poles a1, a4, and a7 that make up the U phase is completed. A jumper wire WK is stretched across the jumper wire locking portion K.

The cutting section 51a of the cutting device 50 and the tip of the wire holding member 71 are located outside the window portion 31b. Here, the cutting section 51a and the tip of the wire holding member 71 may be spaced apart to a position where they do not interfere with the nozzle 10 or the rotating member 31.

After winding is completed, the core C is rotated 20° in the first state so that the nozzle 10 is positioned below the terminal P4 provided below the seventh pole a7. After winding is completed for the seventh pole a7, the nozzle 10 is driven to guide the wire W to the hook portion Pf of the terminal P. The nozzle 10 is then moved to a position below the wire holding member 71 and the cutting member 51.

24, the wire holding member 71 is moved so that the hook portion Pf of the terminal P and the wire W are positioned between the pressing portion 72a of the first holding member 72 and the tip portion 73a of the second holding member 73. Thereafter, the pressing portion 72a of the first holding member 72 is driven toward the second holding member 73 by a driving means (not shown), and the hook portion Pf and the wire W are clamped and pressed to be crimped.

Then, as shown in FIG. 25, the pressure from the second holding member 73 is released, and the wire holding member 71 is retracted. Next, the nozzle 10 is moved downward, and the cutting portion 51a is advanced to cut the wire W directly below the terminal P. The wire W on the terminal P4 side becomes the finish line (WF line) of the U phase, and the wire W exposed from the tip of the nozzle 10 becomes the start line (WS line) of the V phase.

Next, as shown in FIG. 26, the terminal P2 is indexed above the nozzle 10 and the cutting member 51 is retracted. The wire W remaining on the nozzle 10 side remains facing upwards because it is thick and has high rigidity.

Next, as shown in FIG. 27(a), the pressing portion 72a of the first holding member 72 is placed to the side of the wire W extending upward from the tip of the nozzle 10. Next, as shown in FIG. 27(b), the wire holding member 71 is moved horizontally to press down the wire W with the pressing portion 72a. At this time, the wire W is guided by the underside of the pressing portion 72a. Then, as shown in FIG. 27(c), the wire holding member 71 is moved below the tip of the nozzle 10 while still in contact with the wire W. This allows the wire W to be changed to a state where it extends downward from the tip of the nozzle 10.

Next, as shown in FIG. 28, the wire holding member 71 and the cutting member 51 are retracted, and then the nozzle 10 is driven to insert the wire W into the hook portion Pf of the terminal P.

Next, as shown in FIG. 29, the hook portion Pf and the wire W are clamped and pressed by the wire holding member 71 in the same manner as in FIG. 24 to crimp them.

(Effects of the Second Embodiment)
According to the winding machine and the end wire processing device of the second embodiment, it is possible to achieve the same effects as those of the first embodiment. Furthermore, since it is possible to perform end wire processing in which the wire W is fixed to the terminal P by crimping, it is possible to fix the wire W to the terminal P more firmly.

Other Embodiments
Other embodiments of the winding machine will be described with reference to Figures 30 to 29. Note that the same components as those in the winding machine M of the first embodiment are designated by the same reference numerals, and the description thereof will be omitted.

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.

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.

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.

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.

The rotary motor 61 consists 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 closer to or farther away from the switching member 35b.

The gear 61b is positioned at a height that allows it to mesh with the gear teeth 35c of the switching member 35b, and the motor movement 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.

In this embodiment, in the first state, as shown in Figure 30, 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 together by the core indexing motor 33, making it possible to index the core C. Here, the rotation motor 61 is not disposed on the rotating member 31, so there is no resistance to the rotation of the rotating member 31 by the core indexing motor 33.

In this embodiment, in the second state, as shown in FIG. 31, the pin 42a is removed from the rotation limiting portion 35d. Also, the motor moving cylinder 62 drives 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.

In this embodiment, the rotary motor 61 corresponds to the core rotation means, and the second rotation limiting device 42 and the second rotation limiting part 35d correspond to the third limiting means.

In the first embodiment, one motor and two switching means are used, whereas in this embodiment, the same effect can be achieved by using two motors and one switching means.

(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 in the rotation limiting portion 35d, as shown in Fig. 30. When returning the rotating member 31 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. 31. 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 rotating member 31 to be returned to its original position.

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

It is also possible to adopt a configuration that does not include a motor moving cylinder 62. As shown in FIG. 32, the rotary motor 61 may be disposed on the rotating member 31 so that the motor gear 61b meshes with the gear teeth 35c of the switching member 35b. 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 prevent the core receiving member 35 from rotating, it is possible to adopt a configuration that does not include the second rotation limiting device 42, as shown in FIG. 33.

1...Nozzle driving device 10...Nozzle 11...Nozzle holder 12...Nozzle front-back movement device 13...Nozzle left-right movement device 14...Nozzle up-down movement device 15...Nozzle rotation unit 2...Wire holding device 21...Wire holding member 21a...Rod-shaped member 21b...Clamp 22...Drive device 3...Winding index device 30...Core holder 31...Rotary member 31a...Cylindrical portion 31b...Window portion 31c...Bottom portion 32...Core receiving member 32a...Core receiving portion 32b...Switching member 32c...First rotation limiting portion 32d...Second rotation limiting portion 33...Core indexing motor 34...Bearing 35...Core receiving member 35a...Core receiving portion 35b...switching member 35c...tooth 35d...rotation limiting portion 4...rotation state switching device 41...first rotation limiting device 41a...pin 41b...driving means 42...second rotation limiting device 42a...pin 42b...driving means 5...cutting device 51...cutting member 51a...cutting portion 52...driving device 61...rotating motor 61a...motor body 61b...motor gear 62...motor moving cylinder 7...wire rod holding device 71...wire rod holding member 72...holding member 72a...pressing portion 73...holding member 73a...tip portion C...core a...pole D...base K...crossover wire locking portion M...winding machine P...terminal Pk...entanglement portion Pf...hook portion W...wire rod

Claims (4)

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 that holds the wire after winding around the poles or before winding begins;
A cutting device for cutting the wire rod;
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 arranged outside the rotating member, and a wire holding member for holding a wire can be operated inside the rotating member through the window portion;
The cutting device is disposed outside the rotating member, and a cutting member for cutting the wire is configured to be operable inside the rotating member through the window portion,
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 winding machine characterized in that an end wire processing for fixing a wire to a terminal provided on an end face of a core is performed inside the rotating member in the first state . The winding machine according to claim 1, characterized in that the nozzle or the wire holding member is used to wrap the wire around the terminal and entangle the wire with the terminal, thereby performing terminal wire processing. The winding machine according to claim 1, characterized in that it performs terminal wire processing by driving the nozzle, guiding the wire to a hook portion provided on the terminal in order to crimp the wire, and crimping the hook portion to which the wire is guided by a wire holding member of the wire holding device to fix the wire to the terminal. 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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