JP2021072662A - Winding method and winding machine - Google Patents

Abstract

To provide a winding method allowing a pinhole test to be easily and precisely conducted.SOLUTION: A winding method for sequentially winding a wire 120 around a plurality of winding poles provided in a stator 100 by rotating a nozzle 41 for feeding the wire 120, includes: winding the wire 120 around a winding pole U1 that is placed so as to have an axial direction substantially parallel with the horizontal direction; drawing, after the winding of the wire 120 around the winding pole U1 is completed, the wire 120 to a point below the winding pole U1, and then drawing the wire 120 to a point above the winding pole U1; and starting winding the wire 120 around a winding pole V1 that is adjacent to the winding pole U1 with the wire 120 in a state of being continuously drawn to the points below and above the winding pole U1.SELECTED DRAWING: Figure 4

Description

The present invention relates to a winding method and a winding machine for winding a wire around a stator of a motor.

Various proposals have been made for a method of winding a wire (coil winding) with respect to a stator constituting an outer rotor type motor. For example, in Patent Document 1, when a wire is wound around each of a plurality of winding poles provided on the stator, the path of the wire is regulated by moving the guide according to the turning speed of the nozzle that discharges the wire. The winding method is disclosed. According to the winding method described in Patent Document 1, the wire can be wound so as to be perpendicular to the winding axis even when the slot width between adjacent winding poles is narrow.

Japanese Unexamined Patent Publication No. 10-112962

After the wire is wound around the winding pole by the winding machine, a pinhole test is performed to confirm that the wire wound around each winding pole is not damaged in the winding process. In the pinhole test, voltage is applied to both ends of the wire wound around each winding pole to check for current leakage, and if there is current leakage, it is determined that the wire is scratched. To do.

Here, in the winding method using the winding machine described in Patent Document 1, the wire is pulled out from each winding pole in the same direction (specifically, substantially upward in the vertical direction) after the winding process is completed. It becomes a state.

As a method of performing the pinhole test, there is a method of performing one for each winding pole. In this case, the test can be reliably performed for each winding pole, but there is a problem that the time required for the test becomes long and the production efficiency is lowered.

On the other hand, as a method of performing a pinhole test, there is also a method of simultaneously performing all winding poles. In this case, one of the two wires coming out of each winding pole is connected to the positive electrode terminal of the testing machine, and the other one is connected to the negative electrode terminal (ground) of the testing machine, and a voltage is applied between the terminals. To do. With this method, it is possible to easily perform the test, but when the wires are pulled out from each winding pole in the same direction, especially in the stator where the number of winding poles is large, the wires are mistakenly connected. There is a risk.

An object of the present invention is to provide a winding method that enables a pinhole test to be performed easily and accurately.

In order to achieve the above object, the winding method according to the present invention is a winding method in which a nozzle for sending a wire is swiveled and the wire is sequentially wound around a plurality of winding poles provided on a stator. It is characterized in that the wire is pulled out in a first direction and a second direction substantially opposite to the first direction while the wire is connected to the winding start and winding end of the wire with respect to the winding pole. And.

According to the present invention, immediately after the wire winding process on the winding pole is completed, since the wires wound around the plurality of winding poles are connected to one wire, one end of the wire is connected to the ground and the other end is connected. By connecting the wire to the positive electrode, the pinhole test can be performed easily and accurately. Further, the wire drawn substantially vertically upward from each winding pole is cut to have a predetermined length, and the wire drawn substantially vertically downward from each winding pole is cut to have a predetermined length. By doing so, it is possible to easily obtain a stator in which one wire is taken out from each of the plurality of winding poles upward and one wire downward.

It is a perspective view and the front view which show the schematic structure of the winding machine which concerns on embodiment of this invention. It is a perspective view which shows the main part of the winding machine of FIG. It is a perspective view which shows the state at the start of the winding process to the stator by the winding machine of FIG. It is a perspective view which shows the state immediately after the wire is wound around all the winding poles of a stator. It is a development view which shows the state of the wire of the stator shown in FIG. 4, and is the development view which shows the state which cut the wire drawn out from the stator. It is a 1st development view explaining the process of the winding work with respect to the winding pole which performs the winding work first and the winding pole next to it. It is a 2nd development view explaining the process of the winding work with respect to the winding pole which performs the winding work first and the winding pole next to it. It is a figure explaining the 1st structural example of the tip part of the lower rod, and the operation of the lower rod. It is a wiring diagram of the wire in the stator in the state of FIG. 5B. It is a top view which shows another configuration example of the tip part of the lower rod. It is a development view explaining the winding order and the connection state of the wire with respect to the winding pole in the case of connecting 18 poles, 3 phases, 3 series × 2 in parallel.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1A is a perspective view showing a schematic configuration of a winding machine 10 according to an embodiment of the present invention. FIG. 1B is a front view of the winding machine 10. 2 (a) and 2 (b) are perspective views showing a main part of the winding machine 10, respectively.

The winding machine 10 includes a base 20, a frame 30 fixed to the base 20, and a winding mechanism 40 provided on another frame (not shown).

A stator support portion 21 and a guide 22 are arranged on the upper surface (+ Z side surface) of the base 20. The stator support portion 21 rotatably supports the stator 100 of the outer rotor type motor with an axis parallel to the Z axis, which is a direction substantially parallel to the vertical direction, as a central axis. The guide 22 plays a role of preventing the wire from coming into contact with the winding pole adjacent to the winding pole where the winding work of the wire (coil winding) is actually performed in the stator 100.

In the present embodiment, the stator 100 is a stator core which is a metal member having a plurality of magnetic pole teeth (teeth portions) extending radially at substantially equal intervals from a yoke portion formed in an annular shape. It refers to a member covered with an insulator, which is a member made of a resin having a dielectric property (insulating property). The winding pole refers to a tooth portion covered with an insulator. A wire is wound around the winding pole in a coil shape. In this description, regardless of whether the stator 100 is in a state in which the wire is not wound around the winding pole, a state in which the wire is being wound, or a state in which the wire winding is completed. The expression "stator 100" is used to clarify the winding state of the wire in the stator 100 in the process of explanation.

A lower stabilizer 23 is arranged in the vicinity of the upper surface of the base 20. The lower stabilizer 23 is a mechanism for pulling out a wire diagonally downward from a winding pole for which winding work has been completed, temporarily locking the wire, and then releasing the locked wire. The lower stabilizer 23 moves the lower rod 25 and the lower rod 25, which are arranged substantially parallel to the horizontal plane (XY plane), in the thrust direction, and enables the wire to be locked and released. It has a side rod drive unit 26. Details of the structure and operation of the lower rod 25 will be described later.

An upper stabilizer 33 is arranged on the frame 30. The upper stabilizer 33 is a mechanism that pulls out the wire upward (+ Z side) in the substantially vertical direction when winding the wire around the winding pole of the stator 100, temporarily locks the wire, and then releases the locked wire. The upper stabilizer 33 moves the upper rod 35, which is arranged substantially parallel to the X-axis substantially parallel to the horizontal plane, and the upper rod 35 in the axial direction, and enables the wire to be locked and released. It has a rod drive unit 36. The details of the operation of the upper rod 35 will be described later.

The winding mechanism 40 winds a wire around each of the plurality of winding poles of the stator 100. For the winding mechanism 40, for example, a well-known configuration disclosed in Japanese Patent Application Laid-Open No. 10-112962, which is an example of the prior art mentioned above, can be used, and thus only a brief description is given here.

The winding mechanism 40 winds the nozzle 41 that sends out the wire (not shown) so that the winding pole that is the target of the winding work is inserted / removed in the direction parallel to the winding axis of the wire. It has a former tip 42 that advances and retreats with respect to the pole, and a swivel drive unit (not shown) that swivels the nozzle 41 around the winding shaft of the wire. The winding axis of the wire is parallel to the axial direction of the winding pole on which the winding work is performed, and in the winding machine 10, it is parallel to the Y axis which is substantially orthogonal to the X axis in the horizontal plane.

By turning the nozzle 41 around the winding axis while moving the former tip 42 forward and backward with respect to the winding pole, the wire moves from the former tip 42 to the winding pole while being bent in contact with the former tip 42. By doing so, the wire is wound around the winding pole.

The operation of the winding machine 10 when performing the winding work on the adjacent winding pole after the winding work on one winding pole is completed will be described in detail below.

FIG. 3 is a perspective view simply showing a state at the start of the winding process of the wire 120 with respect to the winding pole 110 of the stator 100 by the winding machine 10. FIG. 4 is a perspective view showing a state immediately after the wire 120 is wound around all the winding poles 110 of the stator 100 by the winding machine 10. FIG. 5A shows the state of the wire 120 of the stator 100 (the winding process of the wire 120 is completed) shown in FIG. 4 in which the outer circumference of the stator 100 is developed in a plane (a plurality of winding poles 110 are formed). It is a figure to explain (developed in a band shape). 6 and 7 are views for explaining the process of winding work on the winding pole U1 for which the winding work is first performed and the winding pole V1 adjacent to the winding pole U1 in the same manner as in FIG. Is.

At the start of the winding process, the former chip 42 faces one of the plurality of winding poles 110, the winding pole U1, in the Y direction, as shown in FIG. Until the winding work on the winding pole U1 is completed, the winding pole U1 is maintained at a position facing the former chip 42 in the Y direction. That is, in FIG. 6, the position of the winding pole U1 indicates the position of the former chip 42.

In FIG. 3, the nozzle 41 is on the + Z side (upper side) of the former tip 42 (winding pole U1). In this state, the tip 120a of the wire 120 sent out from the nozzle 41 is held at a predetermined position (the position indicated by a circle in FIG. 6A) substantially above the winding pole U1.

From the state of FIG. 3, the nozzle 41 is swiveled in the direction of the arrow CCW (counterclockwise) shown in FIG. 6 (a). In this way, after winding the wire 120 around the winding pole U1 with a predetermined number of turns through the state of FIG. 6A, the nozzle 41 is placed on the −Z side (lower side) of the former tip 42 (winding pole U1). It is paused to the state shown in FIG. 6 (b). In the state of FIG. 6B, the lower rod 25 is in the standby position shown in FIGS. 2 and 3. When the lower rod 25 is in the standby position, the tip of the lower rod 25 is below the stator 100 (-Z side) and is in a position where the wire 120 is not locked even if the nozzle 41 is swiveled.

Subsequently, as shown in FIG. 6 (c), the wire 120 (the wire pulled out to the −Z side) between the winding pole U1 and the nozzle 41 located on the −Z side at the tip of the lower rod 25. Advance toward 120) and stop. The lower rod 25 is operated. In this way, the state of the lower rod 25 when the tip end portion of the lower rod 25 advances toward the wire 120 pulled out to the −Z side and is stopped is referred to as an “advanced state”.

Here, an example of the configuration of the tip portion of the lower rod 25 will be described. FIG. 8 is a diagram illustrating a first configuration example of the tip end portion of the lower rod 25 (hereinafter referred to as “tip portion 25a”) and the operation of the lower rod 25. FIG. 8A is a side view showing the shape of the tip portion 25a, and FIG. 8B is a front view showing the shape of the tip portion 25a. 8 (a) and 8 (b) each show a state in which the wire 120 pulled out to the −Z side is advanced.

The tip portion 25a is provided with a taper 25a_t so that the tip side is thinner than the root side. Further, the tip portion 25a is provided with a protruding portion 25a_p that protrudes in the radial direction. In the state of FIG. 6C in which the tip portion 25a advances toward the wire 120 pulled out to the −Z side, the rod below the protrusion portion 25a_p as shown in FIGS. 8A and 8B. The lower rod 25 is driven so that the wire 120 is located at the root side of the 25. Note that FIGS. 8 (c) to 8 (f) will be described later.

Returning to the description of FIG. From the state of FIG. 6 (c), as shown in FIG. 6 (d), the nozzle 41 is swiveled in the direction of the arrow CCW to move it to the + Z side of the former tip 42 (winding pole U1), and is temporarily stopped. 8 (c) is a front view of the lower rod 25 corresponding to the state of FIG. 6 (d), and the transition from the state of FIG. 8 (b) to the state of FIG. 8 (c) is shown in FIG. 6 (c). It corresponds to the transition from the state to the state shown in FIG. 6 (d). When the nozzle 41 is swiveled in the direction of the arrow CCW and passed under the lower rod 25, it is wound only half a circumference along the outer peripheral surface of the lower rod 25 and locked to the lower rod 25. It becomes.

Subsequently, with the nozzle 41 temporarily stopped on the + Z side of the former tip 42 (winding pole U1), the lower rod 25 is operated so as to be pulled toward the standby position side, and the state shown in FIG. 6 (e) is obtained. To do. 8 (d) is a side view of the lower rod 25 corresponding to the state of FIG. 6 (e), and the transition from the state of FIG. 8 (c) to the state of FIG. 8 (d) is shown in FIG. 6 (d). It corresponds to the transition from the state to the state shown in FIG. 6 (e). When the lower rod 25 is pulled toward the standby position side from the state of FIG. 8C, the wire 120 is locked (hooked) by the protrusion 25a_p, so that the wire 120 is moved from the nozzle 41 in accordance with the movement of the lower rod 25. A wire 120 of the required length is delivered.

As shown in FIGS. 1 to 3, the thrust direction of the lower rod 25 is arranged so as to form a constant angle with the X-axis and the Y-axis. Therefore, the wire 120 is pulled out diagonally downward of the winding pole U1 during the winding operation. In FIG. 6E, since it is difficult to illustrate the moving direction of the lower rod 25, a state in which the wire 120 is pulled out obliquely downward of the winding pole U1 is schematically shown.

The nozzle 41 and the lower rod 25 are maintained in the states of FIGS. 6 (e) and 8 (d), and the wire 120 is locked to the upper rod 35 as shown in FIG. 6 (f). The upper rod 35 can move forward and backward (or expand and contract) in the axial direction (longitudinal direction), and is inserted into, for example, the −Y side (see FIG. 1) of the wire 120 to lock the wire 120. For example, the upper rod 35 moves from the locked state of the wire 120 to the + Y side in FIG. 6F, then moves to the + Z side, and further moves to the −Y side by a predetermined distance, and then moves to the −Y side by a predetermined distance in FIG. 7A. As shown in the above, the wire 120 is stopped at a position where the wire 120 is not locked even if the nozzle 41 is swiveled. At that time, the wire 120 is sent out from the nozzle 41 by a required length in accordance with the movement of the upper rod 35.

After that, the stator support portion 21 rotates so that the winding pole V1 faces the former chip 42 in the Y direction. Therefore, in FIG. 7, the position of the winding pole V1 indicates the position of the former chip 42.

In addition, in FIGS. 7A to 7F, it is not easy to illustrate the moving direction of the upper rod 35, clearly show the movement of the wire 120, and the wire 120 with respect to the winding pole V1. The position of the upper rod 35 is shown on the + Z side of the winding pole V1 for the purpose of explaining the work of winding the rod.

As shown in FIG. 7B, the wire 120 is wound around the winding pole V1 by turning the nozzle 41 in the direction of the arrow CCW a predetermined number of times, and then the nozzle 41 is attached to the former tip 42 (winding pole V1). Pause at the bottom (-Z side). As a result, the relationship between the winding pole V1 and the wire 120 and the nozzle 41 in the state of FIG. 7B is equivalent to the relationship between the winding pole U1 and the wire 120 and the nozzle 41 shown in FIG. 6B. Become. Therefore, it is necessary to shift from the state of FIG. 7 (b) to the state of FIG. 7 (c) in the same manner as the transition from the state of FIG. 6 (b) to the state of FIG. 6 (c). For that purpose, first, it is necessary to open the wire 120 to which the lower rod 25 is locked.

8 (e) and 8 (f) are views for explaining the opening of the wire 120 by the lower rod 25. First, as shown in the front view of FIG. 8 (e), the lower rod 25 is rotated half a turn about the thrust axis, and the protrusion 25a_p facing the −Z side is directed to the + Z side. Subsequently, as shown in the side view of FIG. 8 (f), the lower rod 25 is further pulled toward the standby position side. As a result, the wire 120 locked to the lower rod 25 is released. At that time, since the taper 25a_t is provided at the tip 25a of the lower rod 25, it is possible to reduce the friction between the wire 120 and the tip 25a, thereby suppressing damage to the wire 120. it can.

Although not shown, when the wire 120 locked to the lower rod 25 is released, the lower rod 25 is centered on the thrust axis so that the protrusion 25a_p facing the + Z side faces the −Z side. Turn half a turn. Such driving of the lower rod 25 is performed by the lower rod driving unit 26. The timing of releasing the wire 120 to which the lower rod 25 is locked is not limited to after the winding of the wire 120 around the winding pole V1 is completed, and the wire 120 makes at least one round around the winding pole V1. It can be any timing after the wire is wound.

Since the state in which the lower rod 25 returns to the standby position in this way is the same as the state in FIG. 6 (b), it is the same as the operation when shifting from the state in FIG. 6 (b) to the state in FIG. 6 (c). The same operation is performed to bring the lower rod 25 into the advanced state. As a result, the state shown in FIG. 7 (c) (equivalent to FIGS. 8 (a) and 8 (b)) can be obtained.

Here, the wire 120 contains, for example, copper as a main component, and has a property that the force for restoring the original state when bent is weak, and the wire 120 is substantially maintained in a bent shape after being bent. .. In the state of FIG. 7B, since the wire 120 is wound around the winding pole V1 with a predetermined number of turns, the portion of the wire 120 extending from the winding pole U1 to reach the winding pole V1 (winding pole U1). A constant tension is maintained on the portion extending downward from the wire, extending upward via the lower rod 25, extending downward through the upper rod 35, and reaching the winding pole V1). There is. Therefore, the shape of the wire 120 bent in a substantially U shape at the portion locked to the lower rod 25 is substantially maintained even when the lower rod 25 is separated from the wire 120, and similarly, it is engaged with the upper rod 35. The shape of the wire 120 bent in a substantially U shape at the stopped portion is substantially maintained even when the upper rod 35 is separated from the wire 120.

As shown in FIG. 3, the lower rod 25 is wound near the outer circumference of the stator 100 when viewed from the Z direction, which is the axial direction of the stator 100 (regardless of the winding state of the wire 120). It is arranged at a position separated from the winding pole at which the wire work is completed along the outer circumference of the stator 100 by about 1/3 of the outer circumference length. Further, the lower rod 25 locks the wire 120 below the stator 100 from the state of FIG. 6 (e) to the state of FIG. 7 (b). In the process of reaching the state of 7 (b), the stator 100 is rotated by one winding pole, and the direction of rotation of the stator 100 is such that the winding pole at which the winding work of the wire 120 is completed is on the lower side. It is in the direction of approaching the arrangement position of the rod 25 (in the direction of arrow R shown in FIG. 3).

Therefore, when the wire 120 that was locked by the lower rod 25 in the state of FIG. 7B is released, the wire that is bent and locked in a U shape on the −Z side of the winding pole U1 becomes Due to the influence of the rotation of the stator 100, a force that rotates in the same direction as the rotation direction of the stator 100 acts. As a result, the wire 120 pulled out from the winding pole U1 for which the winding work is completed to the −Z side moves so as to deviate from the advancing / retreating path of the lower rod 25 after being released from the locking by the lower rod 25. .. Therefore, the operation of the next lower rod 25 after the locked wire 120 is released is not hindered by the released wire 120.

The rotation direction of the stator 100 is not limited to the arrow R direction shown in FIG. 3, and may be the opposite direction. Further, the position where the lower rod 25 is arranged and the advancing / retreating path may be set so that the advancing / retreating operation of the lower rod 25 is not hindered by the opened wire, and is not limited to the above configuration.

The transition from the state shown in FIG. 7 (c) to the state shown in FIG. 7 (d) with respect to the winding pole V1 to the state shown in FIG. 7 (e) is shown in FIG. 6 (c) with respect to the winding pole U1. Since it is the same as the transition from the state of FIG. 6 (d) to the state of FIG. 6 (e) through the state of FIG. 6 (d), the description thereof will be omitted.

In the state of FIG. 7 (e), the upper rod 35 locks the portion of the wire 120 pulled out from the winding pole U1 to the + Z side, but as described above, the portion locked to the upper rod 35. The shape of the wire 120 bent in a substantially U shape is substantially maintained even when the upper rod 35 is separated from the wire 120. On the other hand, in order to shift from the state of FIG. 7 (e) to the state of FIG. 7 (f), as in the transition from the state of FIG. 6 (e) to the state of FIG. 6 (f), the winding pole V1 is used. It is necessary to lock the extending wire 120 to the upper rod 35 and move the wire 120 to a position where the wire 120 is not locked even if the nozzle 41 is swiveled.

Therefore, as shown in FIG. 7 (f), the upper rod 35 operates so that the wire 120 at the portion drawn out from the winding pole U1 to the + Z side is opened. For example, it operates so as to be separated from the wire 120 in the X direction by slightly moving to the −Z side so as to be separated from the wire 120 and then moving or contracting in the axial direction. After that, the upper rod 35 locks the wire 120 pulled out from the winding pole V1 to the + Z side.

The timing of releasing the wire 120 to which the upper rod 35 is locked is, for example, immediately after the wire 120 is wound around the winding pole V1 by a predetermined number of turns in FIG. 7B. It doesn't matter.

After the state shown in FIG. 7 (f), the state shifts to the same state as in FIG. 7 (a), in which case the winding pole W1 (not shown in FIG. 7, see FIG. 5) is the former shaper tip 42. The stator support portion 21 rotates so as to face the Y direction. After that, when the winding operation of the wire 120 with respect to the winding pole W7 is completed by repeating the operations described so far, the winding process of the wire 120 with respect to the stator 100 is completed. In this way, the stator 100 in which the wire 120 is wound in the state shown in FIGS. 4 and 5 (a) is obtained.

By using the stator 100 in the state shown in FIG. 5A thus obtained, the pinhole test can be easily performed. In the stator 100 immediately after the end of the winding process, since the wires 120 wound around the plurality of winding poles 110 are connected to one wire, one end of the wire 120 is connected to the ground and the other end is connected to the positive electrode. , It suffices to detect the leakage of the current in the entire wire 120.

FIG. 5B is a diagram showing a state of the stator 100 after the wire 120 is cut by the two broken lines C shown in FIG. 5A. When the wire 120 pulled out to the + Z side and the −Z side of the winding pole 110 is cut along the broken line C shown in FIG. 5 (a), the + Z side and the −Z side of the wire 120 do not go through the winding pole 110. The portion connected with and is separated from the stator 100. In this way, it is possible to obtain the stator 100 from which one wire 120 is pulled out from each of the plurality of winding poles 110 on the + Z side and the −Z side.

FIG. 9 is a wiring diagram of the wire 120 in the stator 100 in the state shown in FIG. 5 (b). The wires 120 drawn from each of the winding poles 110 of the stator 100 to the −Z side are connected to the lower bus ring (not shown) mounted on the −Z side of the stator 100. The lower bus ring is provided with a neutral phase (N phase) wiring pattern, and all the wires 120 drawn out from each of the winding poles 110 to the −Z side are connected to the N phase.

Further, the wires drawn out from each of the winding poles 110 of the stator 100 to the + Z side are connected to the upper bus ring (not shown) mounted on the + Z side of the stator 100. In the upper bus ring, wiring patterns (U phase, V phase, W phase) are formed in which every three wires are connected to the same phase. The wires 120 drawn out from the + Z side of the stator 100 are sequentially connected to the terminals of the upper bus ring in the circumferential direction.

In this way, by using the stator 100 obtained by the winding machine 10, it is possible to extremely reduce the probability of erroneous connection when connecting the wire to the upper bus ring and the lower bus ring.

Next, another configuration example of the tip end portion of the lower rod 25 will be described. FIG. 10 is a plan view showing another configuration example of the tip end portion of the lower rod 25 (hereinafter referred to as “tip portions 25b, 25c”) as viewed from the −Z side. 10 (a) and 10 (b) are views for explaining the structure and operation of the tip portion 25b, FIG. 10 (a) shows an open state, and FIG. 10 (b) shows a closed state. .. The tip portion 25b has a base arm 25b_1 and a rotating arm 25b_2, and the rotating arm 25b_2 can be rotated around a connection point with the base arm 25b_1 by a drive mechanism (not shown).

The wire 120 is locked, pulled out, and released by the tip portion 25b in the following order. First, the tip portion 25b advances to a position where the wire 120 can be locked (held) by the rotating arm 25b_2 with the rotating arm 25b_2 open. Then, the wire 120 is locked with the rotating arm 25b_2 closed. The lower rod 25 is pulled toward the standby position side, and then the wire 120 is opened by opening the rotating arm 25b_2 at a predetermined timing.

10 (c) and 10 (d) are views for explaining the structure and operation of the tip portion 25c, FIG. 10 (c) shows an open state, and FIG. 10 (d) shows a closed state. .. The tip portion 25c has a first arm 25c_1 and a second arm 25c_2. The first arm 25c_1 and the second arm 25c_2 can be opened and closed by approaching and separating by parallel movement by a drive mechanism (not shown).

The wire 120 is gripped, pulled out, and opened by the tip portion 25c in the following order.
First, the tip portion 25c advances to a position where the wire 120 can be gripped with the first arm 25c_1 and the second arm 25c_2 open. Then, the wire 120 is gripped by narrowing the distance between the first arm 25c_1 and the second arm 25c_2. The lower rod 25 is pulled toward the standby position side, and then the first arm 25c_1 and the second arm 25c_2 are opened at a predetermined timing, and the wire 120 is opened.

The first arm 25c_1 and the second arm 25c_2 may have a configuration in which the wire 120 can be gripped and opened by a rotational operation. Further, it is desirable that the first arm 25c_1 and the second arm 25c_2 are made of a material that does not damage the insulating coating of the wire 120 when the wire 120 is gripped.

Although the preferred embodiment of the present invention has been described above, the present invention is not limited to the above-described embodiment, and various modifications and changes can be made within the scope of the gist thereof. For example, in the above embodiment, FIG. 9 describes a 3-phase 1 series × 7 parallel connection in a stator 100 with 21 poles (21 winding poles 110), but the wire 120 is connected to the stator 100 by the lower rod 25. By controlling the timing of pulling out to the lower side (-Z side) and the rotation angle of the stator support portion 21 (the order in which the wire 120 is wound around the winding pole 110), a wide variety of connections can be easily performed. it can.

For example, a 2-phase 1-series x 7 parallel connection to a 14-pole stator is not shown, but can be performed in the same procedure as the 21-pole, 3-phase 1-series x 7 parallel connection in the above embodiment.

Further, as another example, in the case of connecting a stator having an 18-pole winding pole in three-phase, three-series, and two-parallel connections, the state in which the wire 120 is wound around the winding pole is as shown in FIG. It is schematically shown in FIG. Even after the winding of the wire 120 around the first winding pole U1 is completed, the lower rod 25 is not operated, and the wire 120 is sequentially wound around the winding poles U2 and U3, and then the lower rod 25 is wound. Operate and pull out the wire 120 to the -Z side. Subsequently, the wire 120 is pulled out to the + Z side by the upper rod 35 so that the wire 120 can be wound around the winding pole U4, and then the winding pole is wound in the same manner as the winding pole U1 to U3. Wrap the wire 120 around U4 to U6.

Subsequently, the lower rod 25 is operated to pull out the wire 120 to the −Z side, and then the wire 120 is pulled out to the + Z side by the upper rod 35 so that the wire 120 can be wound around the winding pole V1. The wire 120 is wound around the winding poles V1 to V6 in the same manner as the wire 120 is wound around the winding poles U1 to U6, and the winding pole W1 is further wound around the winding poles V1 to V6 in the same manner as the winding pole W1. -Wrap the wire 120 around W6.

A pinhole test is performed before cutting the wire 120 at the broken line C shown in FIG. 11 (a), and then the wire is cut at the broken line C and connected as shown in FIG. 11 (b) to form a three-phase three-phase three. It is possible to manufacture a stator connected in series × 2 in parallel.

10 Winding machine 20 Base 21 Stator support 23 Lower stabilizer 25 Lower rod 33 Upper stabilizer 35 Upper rod 40 Winding mechanism 41 Nozzle 42 Former tip 100 Stator 110 Winding pole 120 Wire

Claims (11)

This is a winding method in which the wire is sequentially wound around a plurality of winding poles provided on the stator by turning a nozzle that sends out the wire.
At the beginning and end of winding of the wire with respect to one winding pole, the wire is pulled out in a first direction and a second direction substantially opposite to the first direction while the wire is connected. Characterized winding method. This is a winding method in which the wire is sequentially wound around a plurality of winding poles provided on the stator by turning a nozzle that sends out the wire.
The wire is wound around a first winding pole arranged so that the axial direction is substantially parallel to the horizontal direction.
After the winding of the wire around the first winding pole is completed, the wire is pulled out below the first winding pole.
With the wire pulled out below the first winding pole, pull the wire above the first winding pole.
A winding method characterized by starting winding of a wire around a second winding pole adjacent to the first winding pole from a state in which the wire is pulled out above the first winding pole. .. When the nozzle is swiveled after the wire is pulled out above the first winding pole, the stator is set at a predetermined angle so that the wire sent from the nozzle can be wound around the second winding pole. The winding method according to claim 2, wherein the winding method is rotated. When the nozzle is swiveled and the nozzle comes below the first winding pole, a lower locking member is inserted at a predetermined position below the first winding pole to wind the first winding. The wire pulled out from the wire pole is locked to the lower locking member, and the wire is locked to the lower locking member.
The nozzle is swiveled above the first winding pole to stop it, and the wire is engaged with the lower locking member to a position where the wire is not locked to the lower locking member even if the nozzle is swiveled. By moving the wire in the stopped state, the wire is pulled out downward from the first winding pole.
With the nozzle stopped above the first winding pole, the upper locking member is inserted at a predetermined position above the winding pole, and the first locking member is inserted through the lower locking member. The wire pulled out from the winding pole is locked to the upper locking member, and the wire is locked to the upper locking member.
By moving the upper locking member in a state where the wire is locked to a position where the wire is not locked to the upper locking member even if the nozzle is swiveled, the wire is moved above the first winding pole. The winding method according to claim 2, wherein the winding method is in a pulled-out state. After the winding work on the second winding pole is completed, the wire locked by the lower locking member is released, and the wire pulled out from the second winding pole is pulled out from the lower. Locked to the side locking member,
The wire locked by the upper locking member is released, and the wire drawn from the second winding pole via the lower locking member is locked to the upper locking member. 4. The winding method according to claim 4. After the winding work on the plurality of winding poles is completed, the wire drawn below the stator is cut to a predetermined length, and the wire drawn above the stator is cut to a predetermined length. The winding method according to claim 2, wherein one wire is drawn out from each of the plurality of winding poles in the opposite direction to obtain a stator. A support member that rotatably supports a stator in which a plurality of winding poles are arranged radially with an axis substantially parallel to the vertical direction as the center of rotation.
A nozzle that is rotatably arranged around the winding shaft and sends out the wire,
A former tip that winds the wire around the winding pole by facing the winding pole that is the target of the winding work and advancing and retreating with respect to the winding pole in accordance with the turning of the nozzle.
A lower locking member movably arranged below the winding pole,
An upper locking member movably arranged above the winding pole and
The support member, the nozzle, the lower locking member, and a control unit for controlling the operation of the upper locking member are provided.
After the winding of the wire around the first winding pole is completed, the control unit locks the wire to the lower locking member at a predetermined position below the first winding pole, and the control unit locks the wire to the lower locking member. By locking the wire to the upper locking member at a predetermined position above the first winding pole, the wire is connected to the lower side and the upper side of the first winding pole and pulled out. The next second winding pole, which is the target of the winding work, is made to face the former chip, and the winding work on the second winding pole is started. Winding machine. The lower locking member is rod-shaped, rotatable around a central axis, and has a protrusion protruding in the radial direction at the tip.
The control unit is in a state where the nozzle is swiveled once with the protrusion facing downward to lock the wire on the side surface of the tip, and the wire is caught on the protrusion at the tip. 7. The invention is characterized in that the wire is pulled out downward from the first winding pole by moving the nozzle to a position where the wire is not locked to the tip portion even if the nozzle is swiveled. The winding machine described in. When the winding work on the second winding pole is completed, the control unit turns the protrusion upward, so that the wire drawn downward from the first winding pole is released. The winding machine according to claim 8. The upper locking member is rod-shaped
In the control unit, the wire is locked on the side surface of the upper locking member in a state where the nozzle is stopped above the first winding pole, and then the wire is turned on the upper side even if the nozzle is swiveled. The winding according to claim 7, wherein the wire is pulled out above the first winding pole by moving the upper locking member to a position where it is not locked by the locking member. Wire machine. When the winding work on the second winding pole is completed, the control unit moves the upper locking member in a direction away from the wire locked to the upper locking member, whereby the first winding is completed. The winding machine according to claim 10, wherein the wire drawn upward from the wire pole is released.

Images