JPS6018181B2 - Coil winding machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a coil winding insertion machine that drops the wire into a coil insertion jig while winding the wire around a winding frame.
In particular, the present invention provides a coil pusher which allows smooth insertion of electric wires into the coil insertion and odor pickup.

Generally, in a coil winding insertion machine that drops the wire into a coil insertion jig while winding the wire around a winding frame, the coil can be inserted smoothly and dropped into the coil insertion jig without damaging the coil wound on the winding frame. This is an essential requirement. However, with conventional coil winding insertion machines, the wire may not fall smoothly into the coil insertion jig due to the shape of the winding frame.
There were drawbacks such as the connecting wire between the poles being damaged when dropped. Below, a conventional example will be explained with reference to FIGS. 1 and 2. The coil winding insertion machine first inserts the wire 1 into the flyer 2.
and attach it to the cutting device. Since there are several stages of coils that make up one pole of the motor stator winding, start winding the smallest coil. First, when the activation button is pressed, the winding frame 3 of the smallest coil is lowered until it is combed into the tip of the corresponding blade 8 to an appropriate size. At the same time as the fryer 2 starts rotating, the coil pusher 9 having the coil pusher 11A having an elongated rectangular cross section as shown in FIG. 2 moves in the vertical direction. Due to this action, the coil wound on the winding frame is sequentially moved downward and dropped into the blade gap of the coil insertion pick-up tool. When the prescribed number of turns is wound, the formation of the minimum coil is completed. Next, winding the second stage coil is done in the same way as when winding the first stage coil.
First, the second stage winding frame 4 is combed to a suitable size at the tip of the corresponding blade 8, lowered until it is combed, and then passed through the blade 8 and dropped into the wedge guide 12 while winding the prescribed number of turns onto the winding frame. It's crowded. In this way, the third stage (winding frame 5), the fourth stage (winding frame 6), the fifth stage (winding frame 7), etc.
. . . winds the wire in a prescribed number of stages to complete one pole. After the prescribed number of stages and the prescribed number of turns are completed, all the wires remaining in the winding frame of each stage are dropped by lowering the coil pusher 9. Next, in order to wind the next pole coil, the coil insertion jig 10 is moved 180 degrees for 2 poles, 90 degrees for 4 poles, and 60 degrees for 6 poles.
Index only 0 degrees.

Then, the crossover wire between the poles is gripped by a gripping device to prepare the coil winding for the next pole. The winding of the next pole coil is completed by lowering the winding frame, moving the winding wire, and moving the coil push rod up and down for each stage in the same manner as the first pole, and then lowering the coil onto the winding frame.

Finally, at the same time as cutting the wire that has finished winding with a cutting device, the wire is grabbed for the next winding, and the coil winding of the motor stator winding is dropped into the coil insertion pick. End the minute. Although the coil winding insertion work is performed as described above, in conventional coil winding insertion machines, the electric wire wound around the winding frame may not fall smoothly into the blade gap due to the shape of the winding frame.

This is because if the coil pushing portion 11A of the coil pushing rod 9 has an elongated rectangular cross section, the shape of the winding frame will cause the coil pushing rod 9 to move around all corners or corners of the winding frame where the tension of the electric wire to the winding frame is strong. This is because the force of the coil push rod does not work effectively because the coil is no longer located near the tip, and the phenomenon shown in FIGS. 8 and 9 occurs. That is,
Since the force for pushing down the coil pusher in the downward direction does not work effectively, only the part pushed by the coil pusher is pushed down and bent, as shown in Figure 8, and the coil pusher on the outer periphery of the winding frame is bent. The coils in the areas where the pressure is not sufficiently applied are not pushed down, and as shown in the figure, the coil is wound in two stages by the next rotation of the fryer, resulting in an unstable operation of the coil falling into the coil insertion jig. did.

In this way, the conventional coil pusher cannot insert the wire smoothly, so it is unsuitable for use in various motor stator coil winding insertion machines, and the corner part where the wire tension is applied is It was only suitable for special cases such as straight lines, or when there was only one bobbin.

The present invention has been made in view of the above-mentioned conventional drawbacks,
To provide a coil winding insertion machine for a motor stator that can smoothly transfer various types of motor stator windings from a winding frame to a coil insertion pick-up tool without damaging the wires. be. That is, the present invention employs a coil pushing twill in which the coil pushing part that pushes the coil wound around the winding frame pushes the strongest part of the wire, thereby inserting the coil into the gap between the blades of the insertion jig. It was designed to fit smoothly.

An embodiment of the present invention will be described below with reference to FIGS. 3 to 6.

In these figures, the same numbers as above indicate the same parts, and 1
1B and 11C are the coil pushing parts of the coil pushing piece 9 of the present invention, and 18 is a circular arc-shaped space with a certain width provided in the winding frame. The blade 8 of the jig 10 and the watch guide 12 enter. Although not necessarily required in the present invention, in the embodiment mentioned here, columnar pieces 13, 14, 15, 16, and 17 are provided in the space 18 so as to be movable up and down within a certain range. This prevents the tension of the electric wire wound around the winding frame from loosening near the space 18, and prevents twisting that occurs when two or more electric wires are simultaneously wound around the fixed winding frame using a flyer. As is clear from FIG. 5, each columnar piece 13, 14, 15, 16, 17 is provided so as to be movable up and down by a plurality of grooves 21 provided in the winding frame, and when each columnar piece reaches the lowest end. In some cases, the winding frames 3, 4, 5, 6, and 7 are provided so as to fit the surfaces on which the electric wires are wound. 19 and 20' are spaces into which the coil pushing portions 11B and 11C of the coil pusher 9 provided on the winding frame enter.

In the specific example of the coil winding insertion machine shown below, an arc-shaped space 1 is provided in the winding frame for the coil insertion jig to enter.
The contour line connecting the outer periphery of each winding frame located inside and outside of the blade 8 faces a predetermined gap of the blade 8, and care is taken so that the contour lines do not intersect with each other, and the width of each winding frame is such that the width of each winding frame is such that the coil can be inserted. Predetermined slot 2 of a certain motor stator 22
When the shape of the winding frame is set to have dimensions similar to the unfolded dimensions of item 3, the corner portion of each winding frame on the side facing the coil insertion jig will inevitably have an arcuate space 18 as shown in FIG.
placed along the

This means that if the shape of the coil pushing part 11B of the coil pushing rod 9 is to be shaped by connecting the corner parts of each winding frame so that the coil pushing acts effectively, it will not be straight but circular. It shows what will happen.

However, the shape of each winding frame is different from that of the motor stator 22.
As shown in Fig. 4, it is difficult to form a geometrically correct arc, and in the specific example shown in Fig. 4, it is difficult to form a geometrically correct arc. Taking into consideration manufacturing convenience for the frame and the coil pushing part, approximate shapes were selected, and the coil pushing part located outside the space 18 was made into an arch-shaped member 11B as shown in FIG. 6a. As the coil pushing part located inside the part 18, a triangular part 11C as shown in FIG. 6b is used.

Therefore, the spaces 19 and 20 provided in the winding frame where the coil pushing parts are located have shapes suitable for the respective coil pushing parts. On the other hand, since the side that does not face the blade 8 is not affected by the coil insertion jig, the circumferential length of the winding frame in each stage is maintained at a predetermined length, and the outlines of the winding frames do not intersect with each other. Moreover, as long as consideration is given so that the width of the winding frame is close to the expanded dimension of the predetermined slot 23 of the motor stator 22, the winding frame can be formed into any shape. Therefore, in the specific example shown in FIG. 4, a conventional linear coil pushing part 11A is adopted, giving priority to manufacturing improvements in the winding frame and coil pushing part, and the coil pushing part 11A is positioned at a position crossing the winding frame. Make sure that the corners of each reel are aligned.
The width, length, corner curvature, etc. of each winding frame are set.

As is clear from the above description, the coil pushing part of the coil pushing part of the present invention can be used to insert multiple coils of different sizes by removing the part into which the coil insertion jig enters, whether it is outside or inside the space. In a step-like winding frame made up of individual winding frames, any shape may be used as long as the portions of the wire on which the tension is strongly applied to each winding frame are tied together.

By adopting a coil pusher rod with a coil pusher shaped like this, the wire can be inserted smoothly into a wide range of winding frame shapes and winding specifications for various motor stator windings, and the coil can be inserted smoothly into the blade gap. It can be applied to the fly wires without damaging the fly wires, and other great effects can be obtained. In addition to the conventional winding insertion machine shown in Fig. 1, there are also systems shown in Figs. 10, 11, and 12 (U.S. Patent Specification No. 3,579,791); The coil pushing rod 101 used in the wire insertion machine is not designed to operate in conjunction with each rotation of the flyer, but rather pushes the coils wound around the winding frame at once after winding of all the winding frame stages is completed. The purpose of use is essentially different from that of the coil press weight of the present invention. In addition, the arc shape is designed to follow the outer periphery of the fill insertion pick-up tool because it is easier to scrape off the coil insertion odors if the coil is scraped off as close to the coil insertion jig as possible. This is because of this, and has nothing to do with the technical concept of the present invention, which is a shape in which the portions that are strongly subjected to contact pressure with respect to the winding frame are tied together.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a conventional coil winding insertion machine, Fig. 2 is a perspective view of a coil pushing rod used in a conventional coil winding insertion machine, and Fig. 3 is a coil in an embodiment of the present invention. FIG. 4 is a cross-sectional view of the winding frame portion of the coil winding insertion machine, FIG. 5 is an enlarged perspective view of the winding frame portion, and FIGS. 6 a and b' illustrate the present invention described above. A perspective view of the coil pushing rod used in the coil winding insertion machine of the embodiment, Fig. 7 is a sectional view of the motor stator schematically showing the state in which the coil is inserted, and Fig. 8 shows the coil being pushed down by the coil pushing rod. FIG. 9 is a perspective view showing a state in which the coil is wound in two stages; FIG. 10, FIG. 11, and FIG. 12 are views showing other conventional techniques. be. 3, 4, 5, 6, 7... Winding frame, 9... Coil pusher, 10... Coil insertion pick-up tool, 11B,
11C... Coil push part, 19, 20...
...Space section. Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 Figure 10 Figure 11 Figure 12

Claims (1)

[Claims] 1. A step-like winding frame consisting of a plurality of winding frames of different sizes having an arc-shaped space into which the blades and wedge guides of the coil insertion jig arranged in a circle fit, and winding the electric wire around this winding frame. It is provided with a plurality of coil pushers that move up and down in conjunction with the rotation of the fryer and drop the electric wires to be wound around each winding frame into the coil insertion jig, and drop the electric wires to be wound around each winding frame into the coil insertion jig. The coil pushpiece is located at an outside position that avoids the space into which the blade and wedge guide of the coil insertion jig enter, and has a bow shape that approximates the shape of connecting the corners of each winding frame where the tension of the electric wire against the winding frame is strong. a pair of coil pushers each having a coil pusher portion, and a triangular coil pusher portion located inside the space and approximately in the center of the coil pusher having the bow-shaped coil pusher portion. A coil winding insertion machine comprising a coil pusher and a coil inserter.