JPH0611017B2 - Lead wire processing method - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lead wire processing method for reliably winding a cylindrical work having a concave lateral groove parallel to the outer circumference and a concave vertical groove perpendicular to the outer circumference. It is a thing.

2. Description of the Related Art A conventional lead wire processing method for winding a cylindrical work having a concave horizontal groove parallel to the outer circumference and a vertical concave groove perpendicular to the outer circumference is to directly cut the nozzle guiding the wire into the concave groove. A method of putting the wire rod inside and hooking the wire rod coming out of the nozzle at the corners of the two grooves was adopted.

Problems to be Solved by the Invention However, when the two groove widths are equal to or less than the outer diameter of the nozzle,
Since the nozzle does not enter the groove, there is a problem that it interferes with the work and is damaged, or hooking is impossible. As a countermeasure against this, as shown in FIGS. 11 and 12, wire pressing plates 6a and 6b for pressing the wire wound in the groove 7 of the work 4 are provided, but there is a problem in that the reliability is insufficient. . That is, if the diameter of the nozzle that guides the wire is larger than the width of the concave horizontal groove and the vertical groove of the work, the wire cannot be reliably hooked to the corner of the work, and therefore the groove 7 as shown in FIG. Line retainer plate 6a
Then, the wire rod 2 was inserted and held for hooking. However, in this case, since the wire rod 2 is held at the upper end of the groove 7, the wire rod may come off due to vibration and distortion of the wire pressing plate. Next, as shown in FIG. 12, the wire pressing plate 6
The plate thickness of b was made thicker, and a projection portion narrower than the lateral groove width was provided on the lower surface of the wire pressing plate 6b. However, in this case, the clearance between the width of the recessed groove 7 and the projection width of the wire pressing plate 6b must be equal to or less than the diameter of the wire rod 2, so that it is difficult to align the recessed groove 7 with the projection of the wire pressing plate 6b. is there. Further, if the depth of the recessed groove 7 is close to the diameter of the wire rod 2, the height of the protrusion of the wire pressing plate 6b becomes low, and the wire rod 2 cannot be held at the bottom of the recessed groove 7.

In view of the above problems, the present invention provides a lead wire processing method for reliably hooking a wire rod to a corner of a cylindrical work having a concave lateral groove parallel to the outer circumference and a concave longitudinal groove perpendicular to the outer circumference.

Means for Solving the Problems In order to solve the above problems, the lead wire processing method of the present invention uses a hooking pin having a tapered protrusion when guiding the lead wires to the corners of the two grooves. By using it, the nozzle stably hooks the wire.

Operation The operation of the above configuration is as follows. That is,
In the hooking pin of the present invention, a taper portion is provided on the protrusion of the wire pressing plate, and when tension acts on the wire rod, the wire rod falls into the bottom of the recess groove. As a result, by using the hooking pin, it is possible to reliably hook the wire rod at the corners of the concave groove and the concave groove.

Embodiment A lead wire processing method according to an embodiment of the present invention will be described below with reference to the drawings.

1 and 5 show a winding portion of a lead wire treating method in an embodiment of the present invention. In FIGS. 1 to 10, 4 is a cylindrical work having a concave lateral groove 7a parallel to the outer circumference and a concave vertical groove 7b perpendicular to the outer circumference. Reference numeral 1 is a hooking pin that guides the lead wire to the corners of the two grooves 7a and 7b, and 3 is a cylindrical nozzle that guides the wire rod 2.

The operation of the lead wire processing method configured as described above will be described below with reference to FIGS. 1 to 10.

First, FIG. 1 and FIG. 2 show the lead wire treatment of the winding start wire. One end of the wire rod 2 is held by a terminal 5 fixed to a work 4, and a vertical groove of a concave portion perpendicular to the outer circumference is formed. The nozzle 3 moves in parallel until it passes through the lateral groove 7a, and the nozzle 3 stops. Next, the hooking pin 1 that has been on standby moves forward and descends, and the nozzle 3 moves along the concave lateral groove parallel to the outer periphery of the work 4. At that time, as shown in FIG. 4, the wire 2 descends along the taper of the hooking pin 1,
Hooked at the corner of work 4. After hooking, the hooking pin 1 rises, the work 4 starts rotating in the direction opposite to the moving direction of the nozzle 3, and the winding starts.
When the winding is completed, the rotation of the work 4 is stopped and the hooking pin 1 is lowered. The nozzle 3 moves in the direction of the terminal 5, and the wire 2 descends along the taper of the hooking pin 1 as in the hooking of the winding start line, and is hooked to the corner of the work 4. Finally, Figs. 6 to 10
As shown in the figure, the lead wire is fixed to the other end of the terminal.

As described above, according to the present embodiment, by providing the hooking pin for guiding the lead wire, the lead wire can be reliably hooked to the corner of the work.

EFFECTS OF THE INVENTION As described above, according to the present invention, when guiding the winding start and winding end lead wires to the corners of the cylindrical work having the concave groove parallel with the nozzle diameter or less and the concave groove vertical to the outer circumference. By using the hooking pin having the tapered protrusion, the lead wire can be reliably hooked to the corner of the work.

[Brief description of drawings]

FIG. 1 is a perspective view for explaining a method for treating a lead wire of a winding start wire in an embodiment of the present invention, FIG. 2 is an enlarged view of a main part of FIG. 1, FIG. 3 is a plan view of the same, and FIG. 3 is an enlarged sectional view of FIG.
FIG. 5 is a perspective view of a lead wire treating method for a winding end wire according to an embodiment of the present invention, FIGS. 6 to 8 are enlarged views of essential parts showing respective lead wire treating steps, and FIG. 9 is a plan view thereof. FIG. 10 is an enlarged sectional view of FIG. 9, and FIGS. 11 and 12 are sectional views for explaining a conventional lead wire processing method. 1 ... Hooking pin, 2 ... Wire rod, 3 ... Nozzle, 4
…… Work, 5 …… Terminal.

Claims (1)

[Claims] 1. A method for winding a wire rod on a cylindrical work having a concave horizontal groove parallel to the outer circumference and a vertical concave groove perpendicular to the outer circumference while guiding the nozzle by a nozzle, and a lead wire is provided at a corner of the two grooves. A method for treating a lead wire, wherein a hooking pin having a tapered protrusion is used for guiding to stably hook the wire with the nozzle.