JPH1052010A - Lead-wire fastening device of stator core - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lead-wire fastening device of a stator core for winding fixedly around a metallic pin stood on the stator core a lead wire held in one of the holding grooves of an insulator fitted on the stator core. SOLUTION: Providing on the outer periphery of a stator core 11 a cylindrical member 28 fitted thereon movably and rotated therearound, and inserting a lead wire (L) into one of comb-form grooves 28a formed in the cylindrical member 28, it is rotated in a predetermined direction to draw the lead wire L in its circumferential direction and make the lead wire L abut on the outside of a corresponding metallic pin 13 stood on the stator core 11. In that state, fitting on the outside of the pin 13 an entanglement member 44 having at the end thereof a claw portion for hooking the lead wire L, thereby rotating the entanglement member 44 to wind the lead wire L around the metallic pin 13 and fastening it thereto.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a lead wire having a coil formed by winding it on the internal teeth of a stator core and holding the lead wire in a holding groove formed in a rib on an end face of an insulator. The present invention relates to a lead wire fixing device for a stator core, which entangles with a metal pin provided upright on an end face of an insulator of the stator core.

[0002]

2. Description of the Related Art As a device for forming a coil on a stator core, a so-called series winding method in which a conductor is directly wound around inner teeth of the stator core to form a coil, or a coil formed by winding a conductor in advance on a formwork, A coil insertion method in which the coil is inserted into a groove of a stator core by a jig is known. The series winding method has the disadvantage that workability is worse than the coil insertion method, but on the other hand, the length of the loop protruding from the end face of the stator core is shortened to improve the performance, and it is possible to manufacture a small but high-performance motor. It has the advantage of becoming.

[0003] As a series winding type coil winding device, for example, Japanese Patent Application Laid-Open Nos.
The device disclosed in U.S. Pat. No. 2,214,447 is known. That is, the device is arranged at the axis of the stator core, is supported so as to be movable and rotatable in the axial direction, introduces the conductor from one end, and is attached to the other end of the guide cylinder to be fed out from the other end. A nozzle that is mounted via a head and feeds out a conductive wire in a direction substantially orthogonal to the guide cylinder, and rotates the guide cylinder in the axial direction so that the nozzle orbits a predetermined inner tooth outer circumference of the stator core. The structure is such that the lead wire is moved and the wire fed from the nozzle is wound around the internal teeth.

FIG. 8 shows an example of a stator core and a nozzle for winding, in which 11 is a stator core, 11a is a slot,
11b is an internal tooth, 14 is a guide cylinder, 15 is a head,
16 is a nozzle. Then, the guide cylinder 14 rotates while moving in the axial direction, so that the nozzle 16 orbits around the internal teeth 11b of the stator core 11, and a wire drawn from the nozzle 16 is wound around the internal teeth 11b to form a coil. It has become.

By the way, the slot 1 of the stator core 11
An insulator 12 made of an insulating member such as a synthetic resin is mounted on the inner surface and both end surfaces of the la. Referring also to FIG. 9, the insulator 12 has a rib 1 on its end face.
2a, and a holding groove 12b for holding the lead wire L of the coil is formed at a predetermined position of the rib 12a. A boss 12c is formed on the end face of the insulator 12 near the holding groove 12b in the vicinity thereof,
The metal pin 13 is inserted and supported by the boss 12c.

The metal pins 13 are provided for easy attachment of the stator core 11 to the circuit board by being inserted into a circuit board (not shown). When the metal pins 13 are soldered to the circuit board by soldering the lead wires L to the metal pins 13, the lead wires L are soldered to the board at the same time. Very good.

Conventionally, the metal pin 1 of such a lead wire L
The entanglement work for 3 is performed manually or, as shown in US Pat. No. 4,000,764, a lead wire is provided on a stator core support frame while pulling the lead wire against an insulator metal pin. A method of holding a clip, covering a cylindrical member having a claw at the tip on the outer periphery of the metal pin in this state, rotating the cylindrical member, hooking a lead wire to the claw, and winding the metal pin around the metal pin. Has been adopted.

[0008]

The method of manually entanglement of a lead wire with a metal pin has the advantage that no equipment cost is required. However, in recent years, automation of manufacturing operations in Japan has been thoroughly promoted, and human resources have been increased. It is required to be able to cope with production costs in Asian countries and the like where costs are low, and it has been required to automate the above-described lead wire fixing work.

Further, the method disclosed in US Pat. No. 4,000,764 has a problem in that workability is poor because it is necessary to hold leads one by one on clips or the like of a support frame of a stator core. there were.

[0010] Accordingly, an object of the present invention is to work on a metal pin erected on an end face of an insulator in a state where a lead wire of a coil formed by being wound around an inner tooth of a stator core is held in a holding groove of the insulator. Another object of the present invention is to provide a stator core lead wire fixing device that can be automatically entangled and fixed.

[0011]

Means for Solving the Problems In order to achieve the above object, a first aspect of the present invention is to connect a lead wire of a coil wound on inner teeth of a stator core to a holding groove formed in a rib on an end face of an insulator. An apparatus for entangled with a metal pin erected on an end face of an insulator while holding the lead wire, wherein the lead wire is inserted into the outer periphery of the stator core from the end face side on which the lead wire is held so as to be able to advance and retreat, and is fixed at a predetermined position. Rotating at an angle, a cylindrical member having a comb-shaped groove at least in a portion corresponding to the holding groove of the insulator, and inserted into the outer periphery of the metal pin of the insulator so as to be able to advance and retreat and rotate in a predetermined direction; , The lead wire contacting the metal pin is wound around the metal pin and fixed,
A stir core lead wire fixing device comprising a cylindrical entanglement member having a claw portion for hooking a lead wire at a distal end portion.

According to a second aspect of the present invention, in the first aspect, the entanglement member has a predetermined length of a distal end portion cut out except for a cylindrical portion having a length of not less than half a circumference, and extends along the axial direction of the notch. A V-shaped groove extending in the circumferential direction is formed at the edge
A sharp-pointed claw portion is formed at the corner of the cylindrical portion by the U-shaped groove, and the claw portion has a surface cut obliquely from the end surface of the cylindrical portion toward the tip of the claw portion. An object of the present invention is to provide a stator core lead wire fixing device.

According to the first aspect of the present invention, when the cylindrical member is inserted into the outer periphery of the stator core in the vicinity of the end face of the stator core where the lead wire is held, the cylindrical member is held in the holding groove of the insulator and is fixed to the stator core. An outwardly extending lead wire is inserted into the comb-like groove of the cylindrical member. When the cylindrical member is rotated in a predetermined direction in that state, the lead wire is pulled in the circumferential direction from the holding groove of the insulator, and comes into contact with the outside of the metal pin arranged in that direction.

With the lead wire in contact with the metal pin, a cylindrical entanglement member is inserted around the metal pin,
The entanglement member rotates, and the lead wire is hooked on the claw portion at the distal end thereof, wound around the metal pin, and the lead wire can be entangled with the metal pin and fixed.

In the above, the operation of holding the lead wire by the cylindrical member and pulling the lead wire in the circumferential direction to abut on the metal pin can be performed simultaneously for all the lead wires held in the holding grooves of the insulator. Also, the operation of winding the lead wire around the metal pin by the entanglement member can be performed simultaneously for all the metal pins, so that the work of fixing the lead wire can be performed quickly and efficiently.

According to the second aspect of the present invention, when the entanglement member is inserted into the outer periphery of the metal pin and rotated, when the end face of the cylindrical portion facing the claw presses the base side of the lead wire, the lead is removed. The leading end of the wire rises, and the leading end of the lifted lead wire is hooked by the claw and inserted into and held in the V-shaped groove, and the leading end of the lead wire can be wound around the outer periphery of the metal pin. In addition, by providing a surface cut obliquely from the end surface of the cylindrical portion toward the tip of the claw portion, by making the tip of the claw portion retracted from the end surface of the cylindrical portion,
The lead wire can be prevented from breaking due to the claw portion of the rotating entanglement member picking up and pulling the base side of the lead wire.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. As shown in FIGS. 1 and 2, the lead wire fixing device 21 of the present invention has a table 22, and a lifting base 24 is attached to the table 22 via a guide rod 23 so as to be able to move up and down. And this lifting base 24
Is the air cylinder 2 attached to the lower surface of the table 22.
5 to move up and down.

A circular hole 2 is formed at the center of the lift base 24.
The cylindrical member 28 is rotatably mounted on the inner periphery of the hole 26 via a bearing 27. An air cylinder 29 for repeatedly rotating the cylindrical member 28 at a predetermined angle is provided on the lower surface of the elevating base 24. That is, the tip of the operating rod 29a of the air cylinder 29 is pivotally supported by the pin 30 provided at the base of the cylindrical member 28, and the cylinder body 29b of the air cylinder 29 is
It is pivotally supported by a support shaft 31 provided on the lifting base 24. Therefore, the operation of the air cylinder 29 causes the cylindrical member 28 to repeatedly rotate within a predetermined angle range.

The stator core 11 is held above the cylindrical member 28 via a holder (not shown).
8 shows that when the lifting base 24 moves up, the stator core 1
1 is inserted in a state of being close to the outer periphery. In addition, at the upper end of the cylindrical member 28, a comb-shaped groove 28a as shown in an enlarged manner in FIG.
Are formed. The comb-shaped groove 28a is provided at a position corresponding to the holding groove 12b of the insulator 12 shown in FIG. However, the comb-shaped groove 28a may be provided on the entire periphery of the upper end of the cylindrical member 28.

Referring also to FIGS.
2 is supported horizontally on the upper part of the frame 32, and a plurality of guide rods 35 are provided below the table 22 via a pair of upper and lower support plates 33 and 34 supported by the frame 32.
Is provided. An elevating frame 36 is attached via the guide rod 35 so as to be able to elevate and lower. Further, a ball screw 3 connected to a drive shaft of a servomotor 38 attached to the frame 32 via a bracket 37
9 is screwed into the elevating frame 36, and when the ball screw 39 rotates forward and reverse by the operation of the servo motor 38,
The lifting frame 36 moves up and down.

A stepping motor 40 is mounted on the lower surface of the elevating frame 36, and its driving shaft is connected to a multi-axis head 41 installed on the upper surface of the elevating frame 36. The multi-axis head 41 has a plurality of output shafts 42 which stand in parallel and rotate in the same direction. As shown in FIG. 1, these output shafts 42 are provided with couplings 43.
The cylindrical entanglement member 44 is attached via the. A sensor 45 for detecting the number of rotations is arranged near the coupling 43. The tip of the entanglement member 44 passes through the table 22, passes through the inner periphery of the cylindrical member 28, and is disposed close to the lower surface of the stator core 11.

As shown in FIG. 6, a notch portion 44a is formed at the tip of the entanglement member 44 by cutting a portion of a predetermined length from the tip, and the remaining cylindrical portion 44b has a length of at least half a circumference. have. A V-shaped groove 46 extending in the circumferential direction is formed at an edge portion 44c along the axial direction of the cutout portion 44a, and the V-shaped groove 46 has a pointed tip at a corner of the cylindrical portion 44b. A part 47 is formed. The claw portion 47 has a surface 47a that is obliquely cut from the end surface of the cylindrical portion 44b toward the tip of the claw portion 47, whereby the tip of the claw portion 47 is brought into contact with the end surface of the cylindrical portion 44b. On the other hand, it is in a position where it is retracted by a predetermined distance. In FIG. 6, L is a lead wire, and 13 is a metal pin erected on the stator core.

FIG. 7 shows the stator core 11 and the cylindrical member 2.
FIG. 8 is an explanatory diagram showing a relationship between the stator core 8 and the entanglement member 44 as viewed from the lower surface side of the stator core 11. The operation of the air cylinder 29 causes the cylindrical member 28 to repeatedly rotate at a predetermined angle in the directions of arrows A and B in the figure.

Next, the operation of the lead wire fixing device 21 will be described. The lead wire L is connected to the insulator 12 of the stator core 11 before the processing operation by this device 21.
And is radially extended outward in the radial direction. The stator core 11 is supported above the cylindrical member 28 of the elevating base 24 by a holder (not shown).

In this state, first, the air cylinder 25 is operated to raise the elevating base 24, the cylindrical member 28 installed on the elevating base 24 is raised, and the upper end thereof is inserted into the outer periphery of the stator core 11. At this time, a lead wire L projecting radially around the outer periphery of the stator core 11 is inserted into the comb-shaped groove 28a of the cylindrical member 28. In this state, the air cylinder 29 is operated, and the cylindrical member 28 rotates in the direction of arrow A in FIG. 7, and the lead wire L held in the comb-shaped groove 28a
Is pulled in the circumferential direction. As a result, the lead wire L
The insulator 12 is bent in a tangential direction from the outside of the holding groove 12b of the insulator 12, and comes into contact with the outside of the metal pin 13 arranged in that direction.

Next, the servo motor 38 operates to rotate the ball screw 39, and the elevating frame 36 is raised, and at the same time, the cylindrical entanglement member 44 is raised. Entangling member 44
Are provided at positions corresponding to the respective metal pins 13 (however, only three entanglement members 44 are shown in FIG. 7 for convenience), and the upper ends thereof are respectively assigned to the corresponding metal pins 1.
3 and is brought into contact with the end face of the insulator 12. Then, the stepping motor 40 is operated, and the output shaft 42, the coupling 43, and the entanglement member 44 are respectively moved in the direction of arrow C in FIG. 7 (the direction in which the lead wire L is entangled with the metal pin 13) via the multi-axis head 41. To rotate.

As shown in FIG. 6, when the end surface of the cylindrical portion 44b of the entanglement member 44 presses the base side La of the lead wire L, the distal end side Lb of the lead wire L rises, and the distal end side Lb is picked up by the claw portion 47. And is inserted into the V-shaped groove 46.
As a result, the leading end of the lead wire L is held by the V-shaped groove 46 and rotates, and is wound around the outer periphery of the metal pin 13. In addition, since the claw portion 47 is provided with the cut surface 47a for setting the cutting edge from the end surface of the cylindrical portion 44b, the claw portion 47 is prevented from scooping and pulling the base side of the lead wire L. Is done. During this winding operation, the servomotor 38 is operated to move the lifting frame 36 up and down.
Is gradually lowered, and the entanglement member 44 is gradually lowered, so that the lead wires L can be aligned and wound around the outer periphery of the metal pin 13.

When the lead wire L is entangled with the metal pin 13 and the leading end Lb of the lead wire L is completely wound and fixed, the rotation of the stepping motor 40 is stopped and the rotation of the entanglement member 44 is stopped. The servomotor 38 operates to lower the elevating frame 36 to return the entanglement member 44 to its original position away from the lower surface of the stator core 11. At the same time, the air cylinder 25 operates to lower the elevating base 24 to its original position, and the cylindrical member 28 descends away from the lower surface of the stator core 11. Air cylinder 2
9, the cylindrical member 28 rotates in the direction of arrow B in FIG. 7 and returns to the original position. Thus, the operation of fixing the lead wire L to the metal pin 13 in one stator core 11 is completed.

After that, the stator core 11 having completed the work of fixing the lead wire L is carried out by a conveying means (not shown), and another stator core 11 moves and the cylindrical member 28 is moved.
, And by repeating the above operation, the fixing operation of the lead wire L can be performed one after another.

[0030]

As described above, according to the present invention,
By inserting the lead wires held in the holding grooves of the insulator and extending to the outside of the stator core into the comb-shaped grooves of the cylindrical member and rotating the cylindrical member, all the lead wires become the corresponding metal pins. The metal pins can be brought into contact at the same time, and in this state, by winding a cylindrical entanglement member on each metal pin and rotating the entanglement member, all the lead wires can be wound and fixed to the metal pins at the same time. Therefore, the lead wire can be fixed to the metal pin quickly and with good workability, and the productivity can be increased.

[Brief description of the drawings]

FIG. 1 is a front sectional view showing a main part of a lead wire fixing device for a stator core according to an embodiment of the present invention.

FIG. 2 is a plan view showing a main part of the lead wire fixing device.

FIG. 3 is a front view showing the entire lead wire fixing device.

FIG. 4 is a side view showing the entire lead wire fixing device.

FIG. 5 is a partially enlarged view showing a comb-like groove of a cylindrical member used in the lead wire fixing device.

FIG. 6 is a partially enlarged perspective view showing a shape of a distal end portion of a binding member used in the lead wire fixing device.

FIG. 7 is an explanatory view showing a relationship among a stator core, a cylindrical member, and a entanglement member in the lead wire fixing device, as viewed from a lower surface side of the stator core.

FIG. 8 is a plan view showing a state in which a lead wire is held in a holding groove of an insulator mounted on a stator core.

FIG. 9 is a partially enlarged view showing a holding groove and a metal pin of the insulator.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Stator core 12 Insulator 12a Rib 12b Holding groove 13 Metal pin 21 Stator core lead wire fixing device 22 Table 23 Guide rod 24 Elevating base 25 Air cylinder 26 Hole 27 Bearing 28 Cylindrical member 28a Comb-shaped groove 29 Air cylinder 30 Pin 31 Support Shaft 32 Frame 33, 34 Support plate 35 Guide rod 36 Elevating frame 37 Bracket 38 Servo motor 39 Ball screw 40 Stepping motor 41 Multi-axis head 42 Output shaft 43 Coupling 44 Entangling member 44a Notch portion 44b Cylindrical portion 44c Edge 45 Sensor 46 V-shaped groove 47 Claw portion 47a Cut surface L Lead wire

Claims (2)

[Claims] 1. A state in which a lead wire of a coil wound around inner teeth of a stator core is held in a holding groove formed in a rib on an end face of an insulator, and is entangled with a metal pin provided upright on an end face of the insulator. A device for fixing, wherein at least a portion corresponding to the holding groove of the insulator is inserted into the outer periphery of the stator core so as to be able to advance and retreat from the end face side on which the lead wire is held and rotates at a predetermined angle. A cylindrical member having a comb-shaped groove, and the lead wire which is inserted into the outer periphery of the metal pin of the insulator so as to be able to advance and retreat, rotates in a predetermined direction, and is wound around the metal pin. A stir core lead wire fixing device, comprising: a cylindrical entanglement member having a claw portion for hooking a lead wire at a distal end. 2. The entanglement member has a notch having a predetermined length at a tip end thereof, except for a cylindrical portion having a half or more circumference, and a V-shaped groove extending in a circumferential direction at an edge portion along the axial direction of the notch. Forming
The V-shaped groove forms a claw with a sharp tip at the corner of the cylindrical portion, and the claw has a surface cut obliquely from the end surface of the cylindrical portion toward the tip of the claw. The lead wire fixing device for a stator core according to claim 1, wherein