JP3631917B2 - Armature winding apparatus and method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an armature winding apparatus and method.
[0002]
[Prior art]
There are various winding devices for the winding of the coil for the armature of the electric motor. For example, according to Japanese Patent Application Laid-Open No. 64-39248 of the same application, the first core slot is directed to the second core slot. When the coil end is formed by passing the coil wire, the coil end former is used to form the coil end with high accuracy and uniformity.
[0003]
[Problems to be solved by the invention]
However, there is a motor that winds a relatively thick wire. In such a motor, the rigidity of the wire may be higher than the rigidity of the core teeth. In wire work, when the wire is bent from the first core slot toward the second core slot to form the coil end, the wire is pulled to damage the corners of the core teeth, or the opening width of the core slot is narrow May damage the core teeth when the wire is inserted into the core slot.
[0004]
[Means for Solving the Problems]
In order to solve such a problem and realize a winding for an armature that does not cause damage to the core teeth even when a relatively rigid wire is used, in the present invention, the armature has a coil. An armature winding device for winding a wire for an armature, armature support means for supporting an axial end of the armature, and the wire inward in the radial direction toward the armature A wire supply nozzle for feeding to the nozzle, nozzle moving means for relatively moving the wire supply nozzle in the axial direction, the circumferential direction and the radial direction of the armature, and the first core slot to the second core slot A coil end former that is movable relative to the armature in the axial direction of the armature so as to form a coil end between the coil end former and the coil end former. The supply nozzle moves in the axial direction corresponding to the plurality of cores teeth so as to guide the wire so as not to interfere with the core teeth when inserting the wire into the core slots annular interdigital a guide piece formed by extending a plurality of axially Nasu was bent the wire state derived from the axial direction end portion of the first core slot to the circumferential direction together may bent in the circumferential direction a jaw protruding from state to the second is provided at the distal end portion of the front Kiga id piece so as to bend toward the core slots and the egress direction thereof extending, between the jaws at the distal end of the guide piece to having an engagement portion formed at an acute angle, or a coil wire fed from the wire supply nozzle winding method of the armature windings in the armature by using the wire feed nozzle The The coil end former is provided at the distal end portion of the plurality of core teeth corresponding annular plurality of axially gas formed extends id piece forming a comb-shaped front Kiga Id piece and a jaw which projects in its extending direction, and a engaging portion formed at an acute angle between the jaws to the distal end portion of the guide piece, the wire guide by the core slot guide means while the steps of inserting the first core slot, the steps of a predetermined amount deriving the wire from the axial direction end portion of the first core slot, before Symbol of the predetermined amount derived the coil end former wire while bent in the circumferential direction of the armature by engagement portion, the steps of guiding to a position corresponding to the second core slots, the steps of bending the guided wire toward the second core slots, The above The steps to position so as to protect the plurality of core teeth by the previous SL plurality of guide pieces yl end former, to guide the front Kiga Ido piece the wire after bent toward the second core slot However, the coil end is formed by the process of being inserted into the second core slot.
[0005]
According to this, even when a relatively rigid wire is wound, the wire can be guided by the guide piece without touching the core teeth when inserted into the core slot, and the guide piece The bending engagement portion formed at the tip portion is led out from the axial end portion of the first core slot and then bent in the circumferential direction, and then bent toward the second core slot to form a coil end. It is possible to prevent the wire from being bent at the edge of the core teeth.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail based on specific examples shown in the accompanying drawings.
[0007]
FIG. 1 is a partial cross-sectional view showing a main part of an armature winding device to which the present invention is applied. As shown in the drawing, a core 3 and a commutator 4 are coaxially fixed to the shaft 2 of the rotor unit 1 constituting the armature. A drive shaft is provided (not shown), and a collet chuck (not shown) as armature support means is coaxially supported at the end of the drive shaft, and the collet chuck shown in the drawing of the shaft 2. The left end is gripped coaxially.
[0008]
The shaft 2 in the illustrated example is a hollow shaft, and there is a rotation attachment (not shown) as armature support means attached to the end of the fixed shaft 5 disposed on the right side of the winding device in FIG. The shaft 2 enters the right end portion of the shaft 2 so as to support the right end portion of the shaft 2 coaxially and rotatably. Therefore, the rotor unit 1 can be rotated by rotating the drive shaft of the winding device.
[0009]
Note that the above-described attachment is screwed to the fixed shaft 5, and by changing the attachment appropriately, it is possible to cope with a plurality of types of armatures. The fixed shaft 5 is fixed with a wire fixing bracket 6 constituting wire end fixing means formed in a cylindrical shape surrounding the right end portion of the shaft 2 in the drawing. The fixed shaft 5 is fitted with a cylindrical reciprocating shaft 7 via a slide bearing (not shown) so that the reciprocating shaft 7 is reciprocated in the axial direction by a reciprocating actuator (not shown). A wire fixing cylindrical portion 7a as a wire end fixing means formed so as to form a cylindrical shape surrounding the wire fixing bracket 6 is integrally provided at the tip of the reciprocating shaft 7.
[0010]
At a position facing the outer peripheral surface of the rotor unit 1, there are wire supply nozzles 9 that can send out a wire 8 made of, for example, a polyester-coated conductive wire that is wound around the core 3 and becomes a coil. They are arranged radially with respect to one axis. The nozzle 9 is arranged in the radial direction that also constitutes the nozzle moving means via a pipe support block 12 fixed to the end face of the drive disk 11 as nozzle moving means that can rotate coaxially with respect to the fixed shaft 5. Is attached to the tip (rotor unit 1 side) of a guide pipe 13 supported so as to be able to advance and retreat, and the drive disk 11 is driven in the axial direction of the fixed shaft 5 by an actuator (not shown) so that the rotor unit 1 On the other hand, it is relatively movable in the axial direction.
[0011]
The wire 8 is prepared in a wire supply magazine (not shown) in a state of being cut to a required length according to a winding process, and is placed in a flexible tube 14 connected to the rear end of the guide support block 12. It is to be sent out. A wire feeding mechanism (not shown) is provided on the rear end side of the flexible tube 14.
[0012]
The guide pipe 13 is attached with pipe gripping means 15 for allowing the guide pipe 13 to move integrally with the pipe support block 12. The wire 8 is connected to the pipe support block 12. A wire gripping means 16 is fixed to be integrally fixed to.
[0013]
A cylindrical wire guide 17 as a coil end former is provided outside the fixed shaft 5 in the radial direction in the figure so as to be capable of reciprocating in the axial direction. A plurality of guide pieces 18 that are formed so as to extend in the axial direction and have an annular comb shape are provided at the distal end portion of the wire guide 17. A plurality of axial slots 19 are arranged at equal intervals in the circumferential direction at the axially intermediate portion of the wire guide 17.
[0014]
Further, on the outer side in the radial direction of the wire guide 17 in the drawing, a plurality of mountain pressers 21 and the same number of wire pressers 22 as the nozzles 9 are arranged at equal intervals in the circumferential direction. The mountain retainer 21 is for narrowing the coil end formed on the commutator side in the radial direction via the axial slot 19, and the wire retainer 22 advances in the axial direction so that the wire guide 17 covers the core 3. Thus, when the coil end is formed on the anti-commutator side, the wire 8 is pressed against the bottom of the slot through the axial slot 19.
[0015]
The mountain presser 21 and the wire presser 22 are arranged approximately symmetrically in the axial direction with the nozzle 9 interposed therebetween as shown in the figure. Similarly, a wire guide (not shown) is provided on the non-commutator side of the rotor unit 1 so as to face the wire guide 17 so as to be capable of reciprocating in the axial direction.
[0016]
Next, an operation procedure of the winding device configured as described above will be described below with reference to FIGS. The wires 8 are used in the same number as the core slots 3a, and are wound a predetermined number of times between the corresponding pair of core slots 3a, but only one of them is illustrated and shown below.
[0017]
First, as shown in FIG. 2, the wire 8 is fed by a predetermined amount by the wire feeding mechanism described above, and the tip end portion of the wire 8 is slightly protruded from the nozzle 9. The tip end of the wire 8 is inserted into the wire fixing bracket 6 into the opening 6a opened in the same number as the nozzle 9, and the reciprocating shaft 7 is advanced to the core 3 side so that the tip of the wire fixing cylindrical portion 7a and the opening 6a are opened. The tip of the wire 8 is sandwiched between and fixed. Then, the nozzle 9 is moved relative to the commutator 4 along the axis of the rotor unit 1 as indicated by an arrow A in the figure, and the wire 8 is engaged with a slit cut in the riser 4a of the commutator 4. Let Since the wire 8 is inserted through the guide pipe 13 and the tip portion is fixed as described above, the wire 8 is naturally delivered by moving the nozzle 9.
[0018]
Next, the nozzle 9 is moved in the axial direction as shown by an arrow B in FIG. 3, but in the core slot 3a of the illustrated example, it extends so as to be inclined with respect to the axial line as shown in the figure. Therefore, the rotor unit 1 is also rotated by a predetermined angle in the direction of arrow C in order to move the nozzle 9 along the core slot 3a.
[0019]
At this time, the wire guide 27 provided on the side opposite to the commutator 4 side is advanced in the axial direction so as to protect the core slot 3a on the commutator 4 side of the core 3, and the wire 8 is moved from the riser 4a. The wire 8 is inserted into the first core slot 3a as the start of winding so as not to come off. As a result, the wire 8 can be prevented from coming into direct contact with the core teeth 3b when the wire 8 is inserted into the first core slot 3a. Therefore, a relatively thick and highly rigid wire 8 is used. However, the core teeth 3b are not damaged. Then, the wire guide 27 is retracted toward the non-commutator side, and the wire 8 is wound around the first core slot 3a together with the nozzle 9.
[0020]
Thereafter, as shown in FIG. 3, the wire guide 17 on the commutator 4 side is advanced in the direction of arrow D to a position protruding a predetermined amount from the left cross section of the core 3, and adjacent guides as shown by the imaginary line in FIG. The wire 8 is positioned between the tips of the pieces 18. At that time, the wire presser 22 is inserted into the wire guide 17 through the axial slot 19 of the wire guide 17 to press the wire 8 on the commutator 4 side inward in the radial direction. Thereafter, the nozzle 9 is moved relative to the rotor unit 1 and the wire guide 17 in the circumferential direction as indicated by an arrow E in FIG. 5, and the nozzle 9 is a core slot 3a different from the above as a second core slot. It is located between the guide pieces 18 corresponding to.
[0021]
By the way, the tip of the guide piece 18 according to the present invention has an acute angle between the jaw 18a and the jaw 18a protruding in the extending direction of the guide 18 as shown in FIG. The formed engaging portion 18b is provided as a bending engaging portion. Therefore, when shifting from the state of FIG. 4 to the state of FIG. 5, the wire 8 is bent in the circumferential direction by engaging with the jaw portion 18a of the guide piece 18 corresponding to the first slot of the core slot 3a. .
[0022]
Then, by moving the nozzle 9 relative to the wire guide 17 in the direction of arrow E described above, the wire 8 is placed on each jaw portion 18b extending between the first and second core slots. And is formed along the guide piece 18. Further, the wire guide 17 is moved in the direction of arrow F in FIG. 6 so as to protect the core teeth 3b. Next, the guide pipe 13 and the pipe support block 12 are integrated by the pipe gripping means 15, and the nozzle 9 is moved to the outside in the radial direction while feeding the wire 8 by the support block 12. After that, the wire 8 in the guide pipe 13 is pressed and fixed by the wire gripping means 16 so that the straight wire 8 in the guide pipe 13 is led out from the tip of the nozzle 9 in a straight state. It becomes.
[0023]
Next, as shown in FIG. 6, the rotor unit 1 and the nozzle 9 are left as they are, and the wire guide 17 is relatively retracted as indicated by the arrow F in the figure. Thereafter, the mountain presser 21 is moved in the direction of arrow G in FIG. 6 to press the coil end of the wire 8 toward the axial center so that the wire 8 in the core slot 3a is positioned on the bottom side of the core slot 3a. . Further, the wire presser 22 presses the wire 8 in the radial direction to prevent the wire 8 from coming out of the core slot 3a. Thereafter, the straight portion of the wire 8 led out from the nozzle 9 is inserted while being tilted into the core slot 3a by moving the nozzle 9 in the direction of arrow F in FIG. Can do.
[0024]
By moving the nozzle 9 in the axial direction along the core slot 3a with the wire guide 17 retracted as described above, the nozzle 9 side of the wire 8 is in the second slot 3a as indicated by the arrow H in the figure. Be pulled to the side. In the wire 8 having relatively high rigidity, the whole is directed toward the second slot so as to substantially retain the inverted L shape of the portion indicated by the arrow A in FIG. 7, and is indicated by a solid line in FIG. It will be in the shape of a square. Accordingly, in the step of inserting the wire 8 into the core slot 3a again while forming the coil end portion 24 having the above-described character shape, the wire straight portion 8a of FIG. 7 enters the core slot 3a while maintaining the straight state. Thus, even if a relatively thick and highly rigid wire 8 is used, the wire 8 does not hit the edge of the core tooth 3b strongly, and the edge of the core tooth 3b is not damaged.
[0025]
In this way, the coil end portion is formed on one axial side portion of the core 3, but the same series of steps are performed on the axial side portion on the commutator 4 side of the core 3. The coil end portion can be formed, and the armature winding operation can be performed while forming the coil end portion outside both ends in the axial direction of the core 3 by repeating the same process. In addition, as for each movement of the rotor unit 1, the wire guide 17, and the nozzle 9 in each of the above steps, any of them may be moved as long as the relative relationship is maintained, and the above embodiment shows an example. is there.
[0026]
【The invention's effect】
As described above, according to the present invention, even when a wire having relatively high rigidity is wound, the wire is guided by the guide piece of the coil end former and inserted into the core slot. The core teeth can be prevented from being damaged by the wire, and the bending engagement portion formed at the distal end portion of the guide piece is bent from the first core slot and then bent in the circumferential direction. Since the coil end can be formed by bending toward the second core slot from the state of being bent in the circumferential direction, it is possible to prevent bending at the edge of the core teeth, and the edge of the core teeth can be prevented when forming the coil end. It is possible to prevent damage.
[Brief description of the drawings]
FIG. 1 is a cutaway side view of an essential part showing an essential part of a winding device for an armature to which the present invention is applied.
FIG. 2 is a partial side view showing an operating procedure of a winding according to the present invention.
FIG. 3 is a partial side view showing the operating procedure of the winding according to the present invention.
FIG. 4 is a perspective view showing a main part of a winding operating procedure according to the present invention.
FIG. 5 is a perspective view showing a main part of a winding operating procedure according to the present invention.
FIG. 6 is a perspective view showing a main part of a winding operating procedure according to the present invention.
FIG. 7 is a plan view of a main part showing a coil end shape of a winding according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Rotor unit 2 Shaft 3 Core, 3a Core slot 4 Commutator, 4a Riser 5 Fixed shaft 6 Wire fixed bracket 7 Reciprocating shaft, 7a Wire fixed cylindrical part 8 Wire 9 Nozzle 11 Drive disk 12 Pipe support block 13 Guide pipe 14 Flexible tube 15 Pipe gripping means 16 Wire gripping means 17 Wire guide 18 Guide piece, 18a jaw part, 18b engaging part 19 Axial direction slot 21 Mountain holder 22 Wire holder 27 Wire guide 28 Guide piece

Claims (2)

An armature winding device for winding a coil wire around an armature,
Armature support means for supporting the end of the armature in the axial direction, a wire supply nozzle for sending the wire radially inward toward the armature, and the wire supply nozzle for the axis of the armature Nozzle moving means for relatively moving in the direction, circumferential direction and radial direction, and the armature to form the coil end between the first core slot and the second core slot. A coil end former that can move relatively in the axial direction of the child,
The coil end former corresponds to the plurality of core teeth to guide the wire so as not to interfere with the core teeth when the wire supply nozzle is moved in the axial direction to insert the wire into the core slot. and a guide piece formed by extending a plurality of axial direction forming an annular comb-shaped, the wire state derived from the axial direction end portion of the first core slot bent in the circumferential direction and jaw portion projecting from the state of being bent in the circumferential direction to the second provided at the distal end portion of the front Kiga id piece so as to bend toward the core slots and the egress direction thereof extending along with obtaining the tip of the guide piece winding apparatus of the armature, characterized in that it comprises a engaging portion formed at an acute angle between the jaws parts. An armature winding method for winding a coil wire delivered from a wire supply nozzle around an armature using the wire supply nozzle,
The coil end former is provided at the distal end portion of the plurality of core teeth corresponding annular plurality of axially gas formed extends id piece forming a comb-shaped front Kiga Id piece and has a jaw portion projecting in its extending direction, and a engagement portion formed at an acute angle between the jaws to the distal end portion of the guide piece,
Inserting the wire into the first core slot while guiding the wire by the core slot guide means;
Deriving a predetermined amount of the wire from the axial end of the first core slot;
With bends said predetermined amount derived wire in a circumferential direction of the armature by the previous SL engagement portion of the coil end former, comprising the steps of guiding to a position corresponding to the second core slots,
Bending the guided wire toward the second core slot;
The steps to position so as to protect the plurality of core teeth by the previous SL plurality of guide pieces of the coil end former,
By the steps of inserting the wire into the second core slot to said second core slots while guided by front Kiga Id piece after bending towards, armature and forming a coil end Winding method.

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