JPH0222981Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a winding arm in a winding machine that winds a conducting wire around a winding frame having a winding surface on the outer periphery.

[Technical background of the invention and its problems] For example, Japanese Patent Publication No. 57-21934 is known as a winding machine for winding a conducting wire around a winding frame having a winding surface on the outer periphery. That is, as shown schematically in FIG. 3, 1 is a winding machine main body, and a winding frame 3, which is usually formed in two halves and has a winding surface 2, etc. on the outer periphery, is positioned below a rotary disk 4. Provided so that Reference numeral 5 denotes a winding arm provided approximately vertically on the rotary disk 4, and this winding arm is hollow, and includes a wire guide portion 7 for guiding the wire 6 wound around the winding frame 3, and one end thereof. It consists of a nozzle section 8 provided in the. 9 is turntable 4
This through hole 9 is in communication with the hollow part of the conductor guide part 7 of the winding arm 5. 10
is a balance arm fixed to the rotary disk 4, which is positioned in the opposite direction to the winding arm 5 with respect to the winding frame 3, and has approximately the same weight as the winding arm 5.

In such a configuration, when the rotary disk 4 is rotated by a drive device (not shown) and the winding arm 5 is caused to rotate around the winding frame 3, the conductive wire supplied from the conductive wire supply section (not shown) is rotated. The wire 6 passes through the through hole 9, the conductor guide portion 7, and the nozzle portion 8, and is wound on the winding surface of the winding frame 3. Note that the gripping portion that grips the winding start end of the conducting wire 6, the conducting wire cutting portion that cuts the conducting wire 6, and the like are omitted.

By the way, if we pay attention to the winding arm 5 in the conventional winding machine described above, we can see that even if the conductor guide part 7 and the nozzle part 8 are formed integrally or separately, this The nozzle portion 8 was fixed to one end of the conductor guide portion 7, and a nozzle hole 8a provided in the nozzle portion 8 was provided so as to face toward the center of the winding frame 3. Therefore, while the wire guide portion 7 and the nozzle portion 8 are rotating around the outer periphery of the winding frame 3, the wire 6 led out from the nozzle hole 8a of the nozzle portion 8 is supplied while constantly rubbing against the side surface of the nozzle hole 8a. This may damage the conductor or increase the elongation rate of the conductor (where A is the diameter of the conductor supplied from the conductor supply section and B is the diameter of the conductor wound around the winding frame 3) {(A-B) /A}×100% is called the elongation rate) becomes large, which means that the diameter of the conductor becomes thinner, which has the disadvantage of weakening the strength of the conductor itself. .

Therefore, in order to eliminate this drawback, the applicant has developed a technique in which the conductor guide section 7 and the nozzle section 8 are formed separately, and the nozzle section 8 is rotatably held relative to the conductor guide section 7. According to this proposed technique, the winding frame 3
When the nozzle part 8 rotates clockwise around the outer circumference of
The nozzle hole 8a of the nozzle part 8 changes its direction,
By always facing the direction in which the conductor is led out, the above-mentioned drawbacks can be completely eliminated. Note that point A in the figure indicates the position where the winding start end of the conducting wire 6 (not shown) is held by the gripping section.

However, a new problem arose due to the fact that the nozzle section 8 was made rotatable relative to the conductor guide section 7. In other words, although the damage to the conductor and the increase in elongation rate were sufficiently eliminated, the tension applied to the conductor led out from the nozzle decreased, and as a result, the conductor wound on the winding frame was removed from the insertion jig in the subsequent process. When the wires are transferred to the iron core, the arrangement of the conductors may become irregular or the conductors may jump out of the insertion jig (hereinafter referred to as springback phenomenon), which may have an adverse effect when inserting the wound conductor into the iron core. I ended up giving it to him.

[Purpose of the invention] Therefore, the present invention was made to solve this new problem, and is designed to prevent the conductor wire led out from the nozzle part and wound around the winding frame from causing springback phenomenon in the subsequent process. The present invention aims to provide a winding arm for a winding machine.

[Summary of the invention] In order to achieve the above object, the present invention includes a winding arm consisting of a conductor guide part and a nozzle part having a nozzle hole rotatably held at one end of the conductor guide part. In a winding machine that winds wire by rotating it relatively around the outer periphery of a winding frame having a winding surface, a tension applying device is provided in a nozzle portion of a winding arm, the tension applying device having an adjustment member for adjusting the area of a nozzle hole. This is how it was done.

[Embodiment of the invention] An embodiment of the invention will be described below with reference to the drawings. In FIG. 1, 11 corresponds to the winding arm 5 in FIG.
and a nozzle portion 13, both of which are hollow. One end of the nozzle portion 13 has a nozzle hole 13a extending substantially perpendicular to the longitudinal direction of the nozzle portion 13, and the nozzle hole 13a is provided so as to communicate with a hollow portion 13b of the nozzle portion 13. Further, a flange 13c is provided at the other end of the nozzle portion 13. 14 is a bearing whose inner ring fits into the outer diameter part 13d of the nozzle part 13 and whose outer ring fits into the inner diameter part 12a of the stepped part of the conductor guide part 12; 15 is a retaining ring; 16 is a bearing retainer; 17 is a bearing Each retaining ring is shown. Therefore, with this configuration, the nozzle portion 13 is rotatably held relative to the conductor guide portion 12.

Thus, the nozzle portion 13 is provided with a tension applying device 18 according to the present invention. This tension applying device 18 is for applying appropriate tension to the conducting wire 6 led out from the nozzle hole 13a.
A male thread 19 provided on the outer periphery of the lower end of the male thread 1
It is composed of a ring member (adjusting member) 20 that is screwed into the ring member 9 and a set screw 20a. Therefore, the ring member 20 is screwed onto the male thread 19, and the nozzle part 1
The nozzle hole 13a provided in the ring member 20
When the conductor guide portion 12 is slightly closed,
The conducting wire led out through the nozzle hole 13a is forcibly lifted along the longitudinal direction of the conducting wire guide part 12 by the ring member 20 near the exit of the nozzle hole 13a, and this lifting force becomes a tension on the conducting wire. will be given. Further, this tension can be easily varied by changing the screwing amount of the ring member 20 into the male thread 19 and adjusting the area of the nozzle hole 13a that is closed by the ring member 20. After adjustment, tighten the ring member 20 to the nozzle part 13 with the set screw 20a.
Fixed to.

[Other Embodiments] Another embodiment of the present invention will be described using FIG. 2. In the figure, the same members as in FIG. 1 are given the same numbers, and their explanations are omitted. The difference from FIG. 1 is that an adjustment member 21 that closes the nozzle hole 13a is provided in the hollow portion 13b of the nozzle portion 13.
Reference numeral 21 designates the adjustment member, and a through hole 21a is provided on the surface of the adjustment member 21 facing the nozzle hole 13a toward the opposite surface. 22 is a set screw. In this configuration, the area that closes the nozzle hole 13a is adjusted by moving the adjustment member 21 up and down, and then the position of the adjustment member 21 is fixed with a set screw 22. Therefore, the conducting wire is forcibly pushed down along the longitudinal direction of the conducting wire guide section 12 at the entrance of the through hole 21a provided in the adjustment member 21, and this pushing down force is applied as tension to the conducting wire. . Further, this tension can be varied by adjusting the position of the adjusting member 21.

In both of the above-described two embodiments, the nozzle hole 1
A suitable tension can be easily applied to the conducting wire 6 led out from the conducting wire 3a, and since the nozzle portion 13 is rotatably held relative to the conducting wire guide portion 12, no damage is caused to the conducting wire. In addition, since the tension applied to the conductor wire can be easily changed, even if the wire diameter of the conductor changes, the ring member 20 or the adjustment member 21
By changing the position of the conductor, it is possible to apply the optimum tension to the conductor according to the wire diameter.

[Effects of the invention] According to the invention, it is possible to apply an optimal tension to the conductive wire led out from the nozzle part, and to reduce the tension that occurs when the conductive wire wound on the winding frame is then transferred to the insertion jig. This makes it possible to completely eliminate the springback phenomenon.

[Brief explanation of drawings]

Fig. 1 is a front sectional view showing one embodiment of the winding arm of the present invention, Fig. 2 is a front sectional view showing another embodiment of the winding arm of the present invention, and Fig. 3 is a conventionally known winding wire. FIG. 4 is a schematic diagram showing the machine, and FIG. 4 shows a diagram showing the state of winding by a conventional winding arm. 2... Winding surface, 3... Winding frame, 5, 11... Winding arm, 6... Conductor, 7, 12... Conductor guide section,
8, 13... Nozzle part, 13a... Nozzle hole, 2
0a, 22... Set screw, 18... Tension applying device, 19... Male thread, 20... Ring member, 21
...Adjustment member.

Claims (1)

[Scope of utility model registration request] Consisting of a winding frame having a winding surface on the outer periphery, a conductor guide part that slidably guides the conductor, and a nozzle part that is rotatably held at one end of the conductor guide part and has a nozzle hole from which the conductor is led out. A winding arm of a winding machine, wherein the winding arm is configured to wind the conducting wire around the outer periphery of the winding frame while leading out the conductive wire from the nozzle hole by relative rotation of the winding arm around the winding frame. 1. A winding arm in a winding machine, characterized in that a nozzle portion is provided with a tension applying device having an adjustment member for adjusting the area of the nozzle hole.