JPH069571Y2 - Coil winding equipment - Google Patents

Description

TECHNICAL FIELD The present invention relates to a coil winding device used, for example, in a stator of a rotary electric machine, and more particularly to a coil winding device having a plurality of winding steps having different diameters in a stepwise manner. The present invention relates to a structure of a winding frame that can reliably pass an electric wire between winding stages of different diameters in a coil winding device of a type in which a coil is dropped onto a coil insertion jig while winding.

"Prior Art and Problems Thereof" FIGS. 4 to 6 show a conventional coil winding device of this type proposed in Japanese Patent Publication No. 60-10502.
The electric wire 1 wound around the coil is continuously supplied from the tip of the flyer 2 which moves circularly on the circular orbit R shown in FIG. The wire device and the coil insertion jig 3 are located. The coil insertion jig 3 includes a plurality of blades 3 arranged in an arc shape.
a and an insulator piece insertion guide 3b.

The coil winding device includes a rear winding frame 6 supported by the winding frame mounting plate 4, and a front winding frame 7 supported by the mounting plate 5, and the both winding frames 6, 7 are arranged in order from the bottom. Stepwise winding steps 6a, 6b, 6c, 6d and 7a, 7 having a large diameter
It has b, 7c and 7d. And this rear reel 6
Each of the winding stages 6b to 6d has a recess 6 at its lower end.
b ', 6c', 6d 'are formed.

The front bobbin 7 has an insertion hole 7e for inserting the coil insertion jig 3. Reference numeral 8 is a support plate, and the winding frame mounting plates 4 and 5 are fixed to the support plate 8 via pressing plates 9 and 10. Reference numeral 11 denotes an inclined plate, 13 denotes a coil push rod hung from the inclined plate 11 via a spherical bearing 12, and 14
Is a bearing metal that slidably supports the coil push rod 13,
Reference numeral 15 is a shaft for fixing the support plate 8, and 16 is a coil.

In the above structure, when the coil insertion jig 3 is aligned below the front winding frame 7, the shaft 15 descends, the coil insertion jig 3 is inserted into the insertion hole 7e of the front winding frame 7, and the lowermost winding is wound. Step 7
a and the blade 3a mesh with each other. In this state, the flyer 2 through which the electric wire 1 is inserted rotates along the circular orbit R, and the electric wire 1 is wound around the lowermost winding stages 6a and 7a to form the lowermost (first stage) coil 16. Begins. At this time, the end portion 1a of the electric wire 1 is fixed by a lead wire cutting device (not shown). Further, the inclined plate 11 swings in synchronization with the rotation of the flyer 2, and the coil push rod 1 passes through the spherical bearing 12.
3 is moved up and down, and the coil 16 formed by the flyer 2 is sequentially moved downward and dropped into the coil insertion jig 3.

When the formation of the coil of the first stage is completed, the shaft 15 descends again, the second stage 7b of the front winding frame 7 and the blade 3a mesh with each other, and the flyer 2 winds the stage 6a, 7a. The electric wire 1 is wound around the winding stages 6b and 7b, and
The coil formation of the first stage begins.

When transitioning from the winding stages 6a, 7a to 6b, 7b, the electric wire 1 is stepped by a recess 6b 'provided at the lower end of the winding stage 6b, as shown in FIG. That is, the stepped wire 16a of the electric wire 1 starts from the lower small diameter winding step 6a
After passing through b ', the winding stage is moved to the upper diameter winding stage 6b.

After that, coil formation is performed in the same manner for the third and fourth stages, and the electric wire 1 is wound above the winding stage 6 by the recesses 6c 'and 6d'.
Go to c and 6d.

However, in this conventional device, as compared with the steps (a gap A in FIG. 5) of the winding stages 7a, 7b, 7c, 7d of the front winding frame 7, the winding stages 6a, 6b, 6c,
The step difference of 6d (for example, the interval B in FIG. 5) is larger. This is the winding stage 7a, 7b, 7c of the front reel 7.
Since 7d is formed corresponding to the predetermined gap of the blade 3a of the coil insertion jig 3, it is not possible to make a large step between them, and in order to secure the required loop length of the coil, Winding stages 6a, 6b, 6c, 6d of the rear reel 6
This is because it is necessary to make a large difference in level. For this reason,
When the electric wire 1 crossed from the lower winding stage to the upper winding stage, it was easier to cross the winding frame 7 on the front side than the winding frame 6 on the rear side. When the electric wire 1 crosses the upper winding stage by the front winding frame 7, the electric wire 1 is obliquely inserted into the blade 3a of the coil insertion jig 3,
Winding failure occurs. Therefore, conventionally, when the electric wire 1 is passed from the lower winding stage to the upper winding stage, the rotation of the flyer 2 is reduced, and when the flyer 2 comes to the rear reel 6, the reels 6 and 7 are moved one stage. I tried to lower it so that I could cross it. However, since the flyer 2 is decelerated, the winding speed is reduced.

[Object of the Invention] The object of the present invention is to solve this problem of the conventional coil winding device and eliminate the need to reduce the rotation of the flyer when the electric wire is passed from the small diameter winding stage to the large diameter winding stage. An object of the present invention is to provide a coil winding device in which an electric wire can be reliably crossed by a rear winding frame.

[Summary of the Invention] A coil winding device according to the present invention includes a front winding frame arranged at a position where a blade of a coil insertion jig is inserted from below, and a rear winding frame arranged so as to face the front winding frame. And a plurality of winding steps formed by gradually increasing the diameter from the lower side to the upper side are formed on the pair of reels, and the electric wire is wound around the pair of reels by a flyer. A coil winding device in which coils formed in a plurality of winding stages of the pair of winding frames are sequentially dropped into the coil insertion jig, in which the winding stages other than the lowermost winding stage of the rear winding frame are A recess is formed at the lower end, and in the portion of the winding reel of the rear reel excluding the recess, the portion from the lower reel to the upper reel gradually has a gentler curvature than the front reel. It is characterized in that it is formed in a curved surface shape that expands in diameter.

In this way, by forming the portion from the lower winding stage to the upper winding stage of the rear bobbin to the curved surface shape that gradually expands with a gentle curvature, the electric wire can easily cross the rear bobbin, It is possible to prevent a winding defect due to the front winding crossing over. Further, it becomes possible to pass the electric wire without slowing down the rotation of the flyer.

"Embodiment of the Invention" FIGS. 1, 2, and 3 show an embodiment of the coil winding device according to the present invention. The same components as those in the conventional apparatus shown in FIGS. 4 to 6 are designated by the same reference numerals.

As shown in FIG. 1, this coil winding device has a rear winding frame 6 and a front winding frame 7. Both reels 6, 7 have stepwise winding steps 6a, 6b, 6c, 6d and 7a, 7b, 7c, 7d whose diameters are sequentially increased. Then, in the winding stages 6b, 6c, 6d of the rear winding frame 6, the recesses 6b ', 6
c'and 6d 'are formed. Further, an arcuate insertion hole 7e for inserting the coil insertion jig 3 is formed in the front winding frame 7, and a lever for dropping the wound coil into the coil insertion jig 3 is inserted. The groove 7f is formed. The feature of the present invention is that the rear reel 6
Of the winding stages 6a, 6b, 6c, 6d from the lower winding stage to the upper winding stage are formed in a curved surface shape gradually increasing in diameter with a gentle curvature (large R). The portion of the winding frame 7 from the lower winding stage to the upper winding stage of the winding stages 7a, 7b, 7c, 7d is formed so as to sharply expand in diameter with a sharp curvature (small R) and form a corner. Especially.

As shown in FIG. 2, the flyer 2 is rotatably attached to the outer periphery of the shaft 21. A shaft 22 is mounted inside the shaft 21 so as to be vertically slidable. The rear bobbin 6 and the front bobbin 7 are attached to a support plate 23 fixed to the shaft 22. In this case, the front reel 7 is fixed at a position where the coil insertion jig 3 arranged below is inserted into the insertion hole 7e described above, and the rear reel 6 faces the front reel 7 and The mounting position on the support plate 23 is changed so that the distance to the front reel 7 can be adjusted. The reels 6 and 7 attached to the support plate 23 move up and down together with the support plate 23 as the shaft 22 slides up and down. Further, in the groove 7f of the front winding frame 7, a lever 24 for sequentially dropping the wound coils downward is inserted.

In the above structure, the flyer 2 is rotated to rotate the electric wire 1 so that the winding stages 6a, 6b, 6c, 6d and 7 of the bobbins 6 and 7 are wound.
A, 7b, 7c and 7d are sequentially wound from the lower stage.
Then, the coils wound in each stage are sequentially dropped downward by the lever 24, thereby inserting the coils into the coil insertion jig 3. In this case, for example, the bottom winding stage 6
After the electric wire 1 is wound around a and 7a, the shaft 22 is lowered while the flyer 2 is positioned on the rear reel 6, and the reels 6, 7 are
Is lowered, and in the rear winding frame 6, the electric wire is extended to the winding stage 6b one level higher. At this time, as shown in FIG.
The portion from the winding stage 6a to the winding stage 6b above it is formed into a curved surface shape that gradually expands with a gentle curvature (large R), and the recess is formed between the electric wire 1 and the winding stage 6b above. Since the wire 6b 'is formed, the electric wire 1 can be passed over without being caught by the upper winding stage 6b. In the same manner, when the winding stages 6b to 6c and 6c to 6d are crossed, the windings can be reliably crossed without catching the upper winding stage. On the other hand, the winding stages 7a, 7b, 7c of the front winding frame 7,
Since 7d is formed to have a sharp curvature (small R) so as to stand up a corner, the electric wire 1 is prevented from crossing the upper winding stage by the front winding frame 7. Further, in the present invention, since the winding stages of the respective winding frames 6 and 7 are formed in a curved surface shape whose diameter is reduced downward, when the electric wire 1 is wound, the electric wire 1 is sequentially displaced downward. The electric wires 1 can be aligned and wound without providing the coil push rod 13 as shown in FIGS.

[Advantage of the Invention] As described above, according to the coil winding device of the present invention, the winding stage of the rear winding frame is formed in a curved surface shape gradually expanding with a gentle curvature as compared with the winding stage of the front winding frame. Therefore, the electric wire can be reliably passed over the upper winding stage by the rear winding frame, and the winding defect in which the electric wire is passed over the upper winding stage by the front winding frame can be prevented.

[Brief description of drawings]

FIG. 1 is a perspective view showing a winding frame used in a coil winding device according to the present invention, FIG. 2 is a sectional view showing a coil winding device according to the present invention, and FIG. 3 is the same coil winding device. FIG. 4 is a partial perspective view showing a state in which electric wires are laid on the rear reel in FIG.
FIG. 6 is a front view of a conventional coil winding device, FIG. 5 is a cross-sectional view taken along line VV of FIG. 4, and FIG. 6 is a perspective view showing the shape of a recess formed in a winding frame of the conventional device. is there. 1 ... Electric wire, 2 ... Flyer, 3 ... Coil insertion jig,
4, 5 ... reel mounting plate, 6 ... rear reel, 7 ... front reel, 6a, 6b, 6c, 6d, 7a, 7b, 7c, 7d
…… Rolls, 21,22 …… Axis, 23 …… Support plate, 24 ・ ・ ・
…lever

Claims (1)

[Scope of utility model registration request] 1. A front reel (7) arranged at a position where a blade of a coil inserting jig (3) is inserted from below, and a rear reel arranged so as to face the front reel (7). (6) and a plurality of winding stages (7a, 7a, 6) formed on the pair of winding frames (7, 6) by gradually increasing the diameter from the lower side to the upper side.
7b, 7c, 7d, 6a, 6b, 6c, 6d) are formed, and the electric wire (1) is wound around the pair of reels (7, 6) by the flyer (2), A plurality of winding stages (7a, 7b, 7c, 7d, of the frame (7, 6),
6a, 6b, 6c, 6d) is a coil winding device in which the coils formed in the coil inserting jig (3) are sequentially dropped into a lower winding stage (6a) of the rear winding frame (6). ) Except the recesses (6b ', 6b) at the lower ends of the winding stages (6b, 6c, 6d).
c ', 6d') are formed, and the winding stages (6a, 6b, 6c, 6d) of the rear reel (6) are formed.
Except for the concave portions (6b, 6c, 6d), the portion extending from the lower winding stage to the upper winding stage is formed into a curved surface shape with a gentler curvature than the front winding frame (7). A coil winding device characterized by being provided.