JPH0694340B2 - Coil and its manufacturing device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a coil wound by an automatic winding machine and temporarily fixed, and a coil manufacturing apparatus capable of automatically temporarily fixing the coil with an adhesive tape.

2. Description of the Related Art Coils that are installed in slots of stators of electric motors to form field windings are mass-produced by automatic winding machines. As shown in FIG. 13 or FIG. 14, when the coil 1 is conventionally finished, the tongue piece 3 is attached to the end of the adhesive tape 2 for temporarily fixing the wire bundle.
Exists (Japanese Patent Laid-Open No. 54-132764, etc.).

Problems to be Solved by the Invention In such a conventional finishing state, when a coil is inserted in the stator to make an electric motor, the wind caused by the rotating rotor moves the tongue 3 and causes noise. There is a problem that occurs.

It is an object of the present invention to provide a coil in which noise is not generated even by wind generated by the rotor when the stator is equipped with the coil to form an electric motor.

Another object of the present invention is to provide a coil manufacturing apparatus capable of automating the temporary fixing work of a finished coil in which noise is not generated even by the wind caused by the rotor.

Means for Solving the Problems A coil according to the present invention is a field winding coil that is mounted in a slot of a stator of an electric motor, in which the starting end of an adhesive tape is wound in an annular shape in the stator slot of the electric wire bundle. Affixed inside the portion located outside the slot in the mounted state, wrap the adhesive tape around the electric wire bundle, and put the end of the adhesive tape on the inner end of the electric wire bundle and above the starting end of the adhesive tape. It is characterized by pasting and temporary fastening.

Further, in the coil manufacturing device of the present invention, the coil (25) wound around the coil winding surface (6) of the winding core (5) by the flyer (4) is moved from the position of the coil winding surface (6) to the winding core ( A device for winding the adhesive tape (14) around the coil (25) by binding it to the tip side of 5) and binding the tape, the tape winding being closer to the tip than the coil winding surface (6) of the winding core (5). A tape guide (7) for supplying the adhesive tape (14) is provided at the attaching position with the adhesive surface facing downward, and the tip of the adhesive tape (14) is closer to the tip of the winding core (5) than the tape guide (7). A temporary fastening piece (13) to which is attached is provided, and the coil (25 ₂ ) that has been wound on the coil winding surface (6) and the coil (25 ₁ ) located at the position of the temporary fastening piece (13) are engaged. the combined feed to the position of the coil (25 ₂₎ temporary fastening pieces along the winding core (5) (13), the position of the temporary fastening piece (13) While peeling off the tip of Tsu coil (25 ₁₎ adhesive tape with pressing the adhesive tape (14) drawn out subsequent adhesive tape (14) on the upper surface of which is adhered to the temporary fastening piece (13) (14) Coil (25
First for feeding the ₁₎ to the finishing position of the tip side of the said core than tacked piece (13) (5), a second arm (15,1
6) and a coil (25 ₁ ) provided closer to the tip of the winding core (5) than the temporary fastening piece (13) and carried into the finishing position by the first and second arms (15, 16) A first position where the adhesive tape (14) is attached to the inner peripheral surface of the coil (25 ₁ ) by abutting on the inner peripheral side of the coil via the adhesive tape (14) peeled from the temporary fastening piece (13). a coil (25 ₁₎ rotatably pivoted a turning piece over and a second position away from the inner peripheral surface of the (29), said temporary fastening piece (13) and turning piece (29)
And a lever (37) that is supported between the and the core so that the lower end can swing in the longitudinal direction of the winding core (5).
And a cutter blade (41) attached to the bottom surface of the lower end of the lever (37) for cutting the adhesive tape (14) as the lever (37) descends, and attached to the lower end of the lever (37). A flexible end face of the adhesive tape (14) cut by the cutter blade (41) on the tape guide (7) side is pressed against the temporary fastening piece (13) as the lever (37) descends. A piece (43) and a protrusion (46) formed at the lower end of the lever (37) and projecting toward the finishing position are provided, and a turning piece (29) is provided as the lever (37) descends. contact with the turning piece (29) and is rotated to the second position, the end portion of the cutter blade (41) in which cut the are stuck the the coil (25 ₁₎ adhesive tape (14) By swinging the lever (37) in the descending position and moving the lever (37) in the finishing position by the protrusion (46). It is characterized in that it is configured to be pressed against the inner peripheral part of ₁ ).

Action According to this configuration, the adhesive tape for temporarily fixing the coil is
Since the terminal end of the adhesive tape wound around the temporary fixing portion is attached to the inner peripheral portion of the coil on the adhesive tape 2 as shown in FIGS. 15 and 16 and temporarily fixed, this is seen in the conventional example. Such tongue piece 3 does not occur.

In the coil manufacturing device, the first and second arms (15,1
When 6) transfers the coil from the temporary fastening section to the finishing section, pulls out the subsequent adhesive tape and covers it on the upper side of the coil, and the tip of the adhesive tape attached to the temporary fastening piece (13). The end of the peeled adhesive tape was affixed to the inner surface of the coil, and the trailing tape was cut by the cutter blade (41) by lowering the lever (37) and the lever (37) was rotated. With the projection (46), the end of the adhesive tape cut by the cutter blade (41) is pasted onto the adhesive tape already pasted on the inner peripheral surface of the coil for temporary fastening work. Complete.

Embodiment An embodiment of the present invention will be described below with reference to FIGS. 1 to 12.

FIG. 9 shows a state in which the tape winding device of the present invention is mounted on an automatic winding machine. A coil winding surface 6 whose cross-sectional shape is finished into a finished coil shape is provided at a base end portion of a winding core 5 extending along the rotation center of the flyer 4. Reference numeral 7 denotes a tape guide, which is supported via a first cylinder 9 on a table 8 provided above the winding core 5 so as to be able to move up and down with respect to the winding core 5 between a solid line position and an imaginary line position. A tape groove 10 is formed on the upper surface of the winding core 5 as shown in FIG. 1, and the tape guide 7 having the tip inserted into the tape groove 10 and the metal fitting 11 fixed to the winding core 5 are formed. In the meantime, the covered electric wire 12 is wound by the flyer 4. A temporary fastening piece 13 is attached to the tape groove 10 closer to the tip than the coil winding surface 6, and is pulled out from an adhesive tape winding body (not shown) and stretched over the tape guide 7. The tip of 14 is attached to the temporary fastening piece 13. 15,1
6 is the first and second arms, which can be moved up and down and the core 5
First and second driven to reciprocate in the longitudinal direction of the
Of the arms 15 and 16, the upper first arm 15 has a claw 17
21 are provided, and the second arm 16 on the lower side has a claw 2
2,23 are provided. At the tip of the first arm 15,
As shown in FIG. 12, a notch 24 having a width larger than that of the tape guide 7 is formed.

Although not shown in detail in the drawings, a pair of left and right driven horizontally on both sides of the winding core 5 are in contact with the coil winding surface 6 immediately near the tip and in a state separated from the winding core 5. A side former 47 is provided, and when winding the coil on the coil winding surface 6, the tape guide 7 is lowered and the side former 47 is brought into contact with the winding core 5, and then the winding by the flyer 4 is performed. It Then, before the winding of the coil on the coil winding surface 6 that has been wound is carried out, the tape guide 7 is raised and the side former 47 is driven to a position separated from the winding core 5. In the following description, the step of horizontally driving the side former 47 will be omitted.

The coil 25 _{1 which} has been wound on the coil winding surface 6 is wound by the first and second arms 15 and 16 in the following manner.
The tape is intermittently transferred to the tip side of the tape and is bound (temporarily fastened) by the adhesive tape 14.

First, the first and second arms 15 and 16 are advanced to the phantom line position in FIG. 1 to lower the first arm 15, and the second arm 16
Raise. Here, the tip of the claw 17 to 21 are inserted into Tsumemizo 26 provided on both sides of the tape groove 10 as shown in FIG. 2, so that the coil 25 ₁ wound does not spread pawl 17 Then, the tape guide 7 is lifted as shown in FIG.

When the tape guide 7 rises, the first and second arms 15,1
6 is retracted, and the coil of the coil winding surface 6 is formed by the claws 17, 18 and the claw 22
25 ₁ is transferred to a position between the temporary fastening piece 13 and the adhesive tape 14 as shown in FIG. Then, the tape guide 7 is lowered again as shown in FIG. 4, and the winding around the coil winding surface 6 by the flyer 4 is restarted.

The coil 25 ₂ wound the second time is transferred between the temporary fastening piece 13 and the adhesive tape 14 by the first and second arms 15 and 16 through the steps shown in FIGS. 1 and 2. , the coil 25 of the _first round when is pressed against the upper surface of the core 5 by the elastic member 27 which is attached between the pawl 19 and 20 in the lower surface of the first arm 15, further winding Transferred to the tip of the core 5, the tip of the adhesive tape 14 attached to the temporary fastening piece 13 is transferred while being gradually peeled off as shown in FIG.
The subsequent adhesive tape 14 stretched from the coil 25 ₁ to the tape guide 7 is pulled out along with the transfer of the coil 25 ₁ because the adhesive tape 14 is sandwiched between the coil 25 ₁ and the elastic body 27.

On the winding core 5, a turning piece 29 pivotally supported by a shaft 28 is arranged in the recess 30 at a position closer to the tip than the position where the temporary fastening piece 13 is arranged. The spring 32 rotates the rotating piece 29 so that one end 31 on the upper surface side of the spring rotates in the upward direction [arrow A direction].
The rotary piece 29 is interposed between the other end 33 and the core 5, and the rotary piece 29 is restricted from rotating in the arrow A direction by the fixing pin 34.

Coil 25 ₁ transferred by claws 19, 20 and 23 as shown in FIG.
Comes into contact with the one end 31 of the rotating piece 29 to rotate the rotating piece 29 against the urging force of the spring 32, and as shown in FIG. Sent and coil in this position
When 25 ₁ arrives, the coil 25 ₂ wound the second time is sent to the position where the temporary fastening piece 13 is arranged.

Note that the adhesive tape 14 peeled off from the temporary fastening piece 13 by the coil 25 ₁ riding on the rotating piece 29 as described above.
Tips of is adhered to the inner peripheral surface of the coil 25 _1.

Next, the support block 36 attached to the table 8 through the second cylinder 35 is lowered to move the lever 37 between the temporary fastening piece 13 and the rotating piece 29 as shown by the phantom line in FIG. To descend.

The lever 37 has a center pivotally supported by a support block 36 by a shaft 38, and a third cylinder 39 is interposed between the upper end and the support block 36. A rod 40 extending toward the shaft core 5 is attached to the support block 36.

By lever 37 between the temporary fastening piece 13 and pivoting piece 29 descends, chevron shape subsequent adhesive tape 14 from coil 25 ₁ extends over the tape guide 7 is attached to the bottom surface of the lower end of the lever 37 The end 42 on the tape guide 7 side of the adhesive tape 14 cut by the cutter blade 41 of
The flexible piece 43 made of urethane sheet or the like is attached to the side surface of the lower end portion of the lever 37, and is pressed and attached to the temporary fastening piece 13.

As the lever 37 descends, the rod 40 descends and its tip passes through the hole 44 of the first arm 15 and comes into contact with the rotating piece 29, which resists the bias of the spring 32. It rotated as shown in FIG. 7, the one end of the rotary piece 29 moves away from the coil 25 _1.

Next, when the lower end of the lever 37 is rotated to the coil 25 ₁ side by the third cylinder 39 as shown in FIG. 8, the end of the adhesive tape 14 cut by the cutter blade 41 on the coil 25 ₁ side. The portion 45 is folded back toward the inner peripheral surface of the coil 25 _{1 by} the protrusion 46 of the lever 37, and the end portion 45 is attached to the inner peripheral surface of the coil 25 ₁ by the rotating piece 29. It is attached on the adhesive tape 14.

After the lever 37 rotated as shown in FIG. 8 is returned to the upright posture shown in FIG. 7 shown in phantom in FIG. 8, it is raised to the position shown in FIG. Is released, the rotating piece 29 is returned by the urging force of the spring 32, and the rotating piece 29
There pushes up toward the coils 25 ₁ to the elastic body 27, the coil 25 ₁
The adhesive tape 14 is securely attached to the tape.

Coil 25 ₂ being transferred to the position above the temporary fastening piece 13
With respect to the above, the adhesive tape 14 is automatically wound in the same manner and temporary fixing is performed thereafter.

EFFECTS OF THE INVENTION As described above, in the coil of the present invention, the terminal end portion of the adhesive tape wound around the temporary fastening portion of the coil is pasted onto the adhesive tape 2 at the inner circumferential portion of the coil to be temporarily fastened. The tongue 3 as seen in FIG. 3 does not occur, and no noise is generated by the wind caused by the rotor even when a coil is inserted in the stator to form an electric motor. Therefore, in the assembled state of the final product, a good electric motor can be manufactured without performing the step of removing the adhesive tape for temporary fixing.

Furthermore, since the bonding portion of the adhesive tape 2 is inside the bundle of electric wires that receives the temporary fixing, the bonding portion of the adhesive tape 2 is exposed to the outside of the stator portion even when the stator slot is mounted and press-molded into a predetermined shape. The adhesive tape 2 does not easily peel off. This means that, when the adhesive tape 2 is peeled off at the bonding portion while the electric motor is in use, the peeled end of the adhesive tape 2 is caught in the wind caused by the rotor like the tongue piece 3 in the conventional example. However, in the case of the coil of the present embodiment in which the adhesive tape 2 is adhered on the inside, the adhesive tape 2 of the coil incorporated in the electric motor is hard to peel off, and it is preferable that noise is not generated for a long period of time. The state can be maintained.

In the coil manufacturing device, the first and second arms (15,1
When 6) transfers the coil from the temporary fastening piece (13) to the finishing position, pulls out the subsequent adhesive tape and covers it on the upper side of the coil, and the adhesive attached to the temporary fastening piece (13). The tip of the tape is peeled off, and the peeled adhesive tape is pasted on the inner surface of the coil, and the lever (37)
By cutting the subsequent tape with the cutter blade (41), rotating the lever (37), the protrusion (46), the end of the adhesive tape cut with the cutter blade (41), By pasting onto the adhesive tape that has already been pasted on the inner peripheral surface of the coil, it is possible to automatically manufacture a good temporarily fastened coil without the section (3) as in the past, which saves labor in coil manufacturing. It can contribute.

[Brief description of drawings]

FIGS. 1 to 12, 15 and 16 show one embodiment of the coil of the present invention and its manufacturing apparatus. FIGS. 1 to 8 are process explanatory diagrams and FIG. 9 is an overall front view. FIG. 10 is a plan view of the winding core, FIG. 11 is a plan view of the XX ′ arrow of FIG. 10, FIG. 12 is a plan view of the first arm, and FIGS. 13 and 14 are conventional tape windings, respectively. FIG. 15 is a cross-sectional view of the attached state, FIG. 15 is a cross-sectional view of the coils bound by the coil manufacturing apparatus of the present invention, and FIG. 16 is a perspective view of FIG. 4 ... Flyer, 5 ... Winding core, 6 ... Coil winding surface, 7 ...
… Tape guide, 10 …… Tape groove, 13 …… Temporary fastener, 14
...... Adhesive tape, 15 …… First arm, 16 …… Second arm, 25 ₁ …… Coil, 27 …… Elastic body, 29 …… Rotating piece, 3
2 …… Spring, 34 …… Fixing pin, 40 …… Rod, 41 …… Cutter blade, 43 …… Section, 46 …… Projection.

Claims (2)

[Claims] 1. A field winding coil mounted in a slot of a stator of an electric motor, wherein a starting end of an adhesive tape is attached to the stator slot of an electric wire bundle wound in an annular shape to the outside of the slot. A coil which is affixed to the inside of a portion where it is located, an adhesive tape is wrapped around the electric wire bundle, and the end of the adhesive tape is adhered to the starting end of the adhesive tape at the inner peripheral portion of the electric wire bundle and temporarily fixed. 2. A coil (25) wound around a coil winding surface (6) of a winding core (5) by a flyer (4) is attached to the tip side of the winding core (5) from the position of the coil winding surface (6). A coil manufacturing device for manufacturing a coil by moving an adhesive tape (14) around a coil (25) and bundling the adhesive tape (14), the coil being located closer to the tip than the coil winding surface (6) of the winding core (5). A tape guide (7) for supplying the adhesive tape (14) is provided at the tape winding position with the adhesive surface facing downward, and the adhesive tape (14) is located closer to the tip of the winding core (5) than the tape guide (7). temporary fastening piece tips of is stuck (13) is provided, winding of the finished coil (25 ₂₎ and tacked strip in the coil winding surface (6) (13)
Coil (25 ₂ ) by engaging the coil (25 ₁ ) that was in the position
Is sent to the position of the temporary fastening piece (13) along the winding core (5), and the adhesive tape (14) is pressed against the upper surface of the coil (25 ₁ ) located at the position of the temporary fastening piece (13), and While pulling out the adhesive tape (14) and peeling the tip of the adhesive tape (14) attached to the temporary fastening piece (13) from the temporary fastening piece (13), remove the coil (25 ₁ ) from the temporary fastening piece (13). Is also provided closer to the tip of the core (5) than the first and second arms (15, 16) and the temporary fastening piece (13) for feeding to the finishing position closer to the tip of the core (5). At the finishing position
The coil (2 loaded by the first and second arms (15, 16)
5 ₁ ) Abut on the inner peripheral side of the temporary fastening piece (13) through the adhesive tape (14) peeled off from the temporary fastening piece (13) to attach the adhesive tape (14) to the inner peripheral surface of the coil (25 ₁ ). Position 1 and coil (2
5 ₁ ) A turning piece (29) pivotally supported to a second position away from the inner peripheral surface of the holding piece, and the temporary fastening piece (13).
A lever (37) that is supported between the rotating piece (29) and a rotating piece (29) so as to be able to move up and down, and that is pivotally supported so that the lower end of the winding core (5) can swing. A cutter blade (41) attached to the bottom surface of the lower end of the lever (3) for cutting the adhesive tape (14) as the lever (37) descends, and a lever (3).
One end on the tape guide (7) side of the adhesive tape (14) attached to the lower end portion of (7) and cut by the cutter blade (41) is moved along with the lowering of the lever (37) to the temporary fastening piece ( A flexible section (43) to be pressed against the lever (13) and a protrusion (46) formed on the lower end of the lever (37) and projecting toward the finishing position are provided to allow the lever (37) to descend. with and in contact with the turning piece (29) is rotated rotation piece (29) to a second position, said that stuck to the coil (25 ₁₎ is cut by said cutter blade (41) Adhesive tape (1
A coil manufacturing apparatus configured to swing the lever (37) at the lowered position to press the end of ( ₄ ) against the inner peripheral portion of the coil (251) at the finishing position by the protrusion (46).