JPH01232709A - Device and method for toroidal winding - Google Patents

Abstract

PURPOSE:To make it possible to improve the space factor of a winding in the center hole part of an iron core, and to accomplish the miniaturization of the title winding device in its entirety by a method wherein a spool, which can be passed through between rollers, is provided in order to champ the conductor, to be wound by inserting into the center hole part of an annular iron core, with the iron core and a driving device with which said spool is travelled. CONSTITUTION:A spool 38 is inserted into the center hole part 41b of an iron core 41 by opening a part of the spool 38, the spool is coupled, the tip of a conductor 42 is engaged to the winding 38, and a motor 32 is driven. Consequently, a chain 39 and then the spool 38 is driven like C by the rotary driving of one of sprockets 35 by a follower pulley 47, the conductor 42 is pulled out further from a conductor drum 50, and it is wound on the column part of a roller 40. At this point, the motor 32 is once stopped, the leading end of winding of the conductor 42 is pulled out from the spool 38, it is passed through between the rollers 40, it is engaged with the iron core 41, and when the motor 32 is driven again, the conductor 42 is wound on the insulated layer of the leg part 41a of the iron core 41 by the travelling spool 38.

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) The present invention provides a toroidal winding device for winding a conductor using a winding frame around an annular core and a winding wire therefor. Regarding the method.

(Prior Art) Conventionally, this type of toroidal winding device has been disclosed in Japanese Patent Application Laid-open No. 62-72106 and Japanese Patent Application Laid-open No. 61
-43408 and JP-A-62-117310 are typical examples.

Among these, the former (shown in Japanese Patent Application Laid-open No. 62-7210fi), as shown in FIG.
The bobbin 2 is rotated by a driven gear 3 provided at both ends thereof and a drive gear 4 meshed with the driven gear 4, and the conductor 5 is wound around the bobbin 2 and, in turn, around the leg portion 1a of the iron core 1. It is.

- Knob 1 The latter (shown in JP-A-61-43408 and JP-A-62-117310) is the 8th
As shown in the figure, a motor 12. Conductor drum 13. Tension device 14° Holding table 15 is arranged, and a circular wire storage frame 16 is held by a plurality of rollers 17, and the ring-shaped iron core has the wire storage frame 16 set on the holding table 15. The conductor 20 is inserted into the center hole 18a of the conductor 18, and then the driving force of the motor 12 is transmitted to the wire storage frame 16 via the belt transmission mechanism 19 and the rollers 17 to rotate the wire storage frame 16. The wire is drawn out from the drum 13, passed through the tension device 14, and wound around the wire storage frame 16 in an amount necessary for one winding. Then, by locking the tip of the conductor 20 pulled out from the wire storage frame 16 to the iron core 18 and rotating the wire storage frame 16 in the same manner as described above, the conductor 20 is placed around the leg portion 18b of the iron core 18. It is something that will be wrapped up.

(Problems to be Solved by the Invention) According to the former among the conventional ones listed in L, it is first necessary to approximate the cross-sectional shape of the iron core 1 to the circular cross-sectional shape of the rotating bobbin 2. As shown in Fig. 7, many types of ribbons with different width dimensions are required, and the winding of the iron core 1 becomes complicated due to the large number of types, which has the disadvantage of requiring a large number of man-hours. When rotating the bobbin 2, the driven gear 3 splits the bobbin 2 of the iron core 1 into the leg portion 1a.
The center hole IC of the iron core 1 must be made large enough to prevent it from coming into contact with the leg 1b on the opposite side and damaging it, or from impeding the rotation of the bobbin 2 itself. As a result, the space factor of the winding in the center hole IC decreases, resulting in an increase in the overall size.

On the other hand, according to the latter, a conductor 2 is attached to the leg portion 18a of the iron core 18.
Since the core 18 is wound directly without using a bobbin, the cross-sectional shape of the core 18 can remain rectangular, and therefore only one type of ribbon with the same width is required, and the winding of the core 18 is Can be easily formed. However, since the wire storage frame 16 with a circular bulge is inserted into the center hole 18a of the iron core 18, the center hole 18a must be made large as in the former case. 1
It had the same drawbacks as the former in that the space factor of the winding at 8c decreased and the overall size increased.

Furthermore, according to the former, even though the cross-sectional shape of the iron core 1 is approximated to the circular cross-sectional shape of the bobbin 2, a certain amount of air gap remains between its outer surface and the inner surface of the bobbin 2. However, this not only reduces the space factor of the winding around the leg portion 1a of the iron core 1, but also causes the magnetic characteristics to deteriorate.

Furthermore, according to the latter, when the position of the conductor 20 in the wire storage frame 16 reaches P5 shown in FIG. As the core 18 approaches the lower outer corner point A, which is the center of rotation, it becomes sagging, and as a result, the conductor 20 is also loosened when wound around the legs 18b of the core 18, and as described above, the legs of the core 18 are loosened. This has the disadvantage that not only the space factor of the winding around the portion 18b is reduced, but also the magnetic characteristics are deteriorated. In order to deal with the latter drawback, in the method disclosed in Japanese Patent Application Laid-Open No. 117310/1982, a conductor 20 is attached around the leg portion 18b of the iron core 18 as shown in FIG. A pressure roller 21 that moves while pressing is provided to prevent loosening of the conductor 20 wound around the leg portion 18b. However, in order to make it work as expected, it is a rather complicated mechanism as described in the publication.

This method requires a separate device, and has the drawback of causing a significant increase in the cost of the entire winding device.

In addition, according to the latter, the conductor 20 is wound around the wire storage frame 16 in an amount necessary for one winding each time, and then pulled out from the wire storage frame 16 and attached to the leg portion 18b of the iron core 18. Since it involves two steps of winding the wire, it has the disadvantage that it takes a long time to complete each winding.

The present invention has been made in view of the above-mentioned circumstances, and its first object is to enable the iron core to require only one type of ribbon having the same width dimension, and to The second object is to provide a toroidal winding device that can improve the space factor of the winding in the hole, and the second object is to improve the space factor of the winding around the legs of the iron core. In order to provide a toroidal winding device that can improve magnetic properties without requiring complicated mechanisms or devices, a third object is to reduce the time required for one winding. An object of the present invention is to provide a toroidal winding method that can shorten the winding process and improve productivity.

[Structure of the Invention] (Means for Solving the Problems) In order to achieve the above-mentioned first object, the toroidal winding device of the present invention consists of a chain and a large number of rollers arranged on the chain, A winding frame is provided so that the conductor to be wound through the hole can be passed between the rollers in order to lock it to the iron core, and the winding frame is driven to travel. It is equipped with a drive device provided as shown in FIG.

In addition, in order to achieve the second object, the toroidal winding device of the present invention has a winding frame in the toroidal winding device described above, when unwinding a conductor that is tightly wound around an iron core. The object is characterized in that the shape is the same as or similar to the figure derived from the locus drawn by the figure.

In order to achieve the third object, the toroidal winding method of the present invention includes winding a conductor onto a winding frame and winding the conductor from the winding frame onto an iron core in any of the above-described toroidal winding devices. This is characterized in that winding and wrapping are performed at the same time.

(Function) The winding frame, which is made up of a chain and a large number of rollers arranged on the chain, can wind a conductor around the legs of the iron core in a tangential manner by Iα as the winding frame runs. In addition, the winding frame, which consists of the chain and a number of rollers arranged on the chain, can be inserted straight into the center hole of the iron core, and does not have the bulges of conventional circular wire storage frames. Of course, since there is no need to split bobbins in the legs of the iron core, the center hole of the iron core can be made small enough to eliminate the need to take them into consideration.

If the above-mentioned winding frame is defined in a shape that is the same as or similar to the figure derived from the locus drawn by the end of the conductor when unwinding the conductor that has been tightly wound around the iron core, the winding On the contrary, the conductor can be conveniently wound around the iron core without any loosening, and without requiring any other complicated mechanism or device.

Furthermore, according to a winding method in which the winding of the conductor onto the winding frame and the winding from the winding frame onto the core are performed at the same time, these steps are performed in one step instead of being divided into two steps. Can be done.

(Embodiment) An embodiment of the present invention will be described below with reference to FIGS. 1 to 5.

First, in FIG. 1, reference numeral 31 denotes a frame, on the top of which a motor 32 and frames 33 and 34 are arranged. A large number of sprockets 35 and a chain guide 36 are arranged on the frames 33, 34 in an arrangement that will become clear later, and a guide roller 37 is arranged on the upper part.

38 is a winding frame, which is rotatably supported between two left and right chains 39 and arranged in the length direction of the chain 39, as shown in FIGS. 2 and 3. It is composed of a large number of rollers 40, which are disposed over the sprocket 35 and the chain guide 36.

Here, FIGS. 4(a) to 4(d) are for explaining the arrangement situation of the winding frame 38, and FIG. The conductor 42 is shown wrapped without any windings. When this conductor 42 is unraveled, the end 42 of the conductor 42 that was present at the upward corner W of the core leg 41a
a from the upper corner W to the upper outer corner X in the same figure (
As shown in b), draw a circular arc locus with radius XW centered on the upper outer corner X, and then draw an arc locus with radius XW around the upper outer corner Y, as shown in the same figure (C).
The radius yx+x centered on the lower outer corner Y as shown in
A circular arc locus of w is drawn, and an arc locus of radius zy+yx+xw centered on the lower inner corner Z is drawn as shown in FIG. The trajectory drawn by the end 42a of the conductor 42 in this way is a curve 43,
FIG. 5 shows a figure derived from the curve (trajectory) 43.

In the figure shown in FIG. 5, α is a correction amount that takes into consideration the necessary clearance etc. for penetrating the center hole 41b of the iron core 41, and taking this into consideration, 5IS2 is In the straight line portion penetrating the center hole 41b, R is the radius of an arcuate curve that smoothly connects the curve 43' determined by the above dimensions and the straight lines S and s2, based on an appropriate value selected by the device.

The winding frame 38 is formed by the sprocket 35 and the chain guide 36 into a shape that is the same as or similar to the shape shown in FIG. 5 described above.

Referring again to FIG. 1, 44 is a driving pulley attached to the motor 32, 45 is an intermediate pulley supported on the frame 34, 46 is a belt stretched between these pulleys 44 and 45, and 47 is one of the sprockets 35. A driven pulley 48 is provided integrally with the driven pulley 47 and the intermediate pulley 4.
5, and these constitute a drive device 49 using the motor 32 as a drive source. Further, 50 is a conductor drum storing a large amount of conductors 42, 51 is a tension device disposed between the conductor drum 50 and the guide roller 37, and 52 is a second tension device on which the iron core 41 is placed.
A core feeding table 53 that feeds the winding one pitch at a time in the direction of arrow B in the figure is a clamp that holds down and fixes the iron core 41 placed on the iron core feeding table 51.

Now, in the case of the structure as described above, when winding the conductor 42 around the iron core 41, the iron core 41 is first placed on the iron core feed table 52 and held and fixed by the clamp 53.

Next, the winding frame 38 is partially opened and the center hole 4 of the iron core 41 is opened.
1b, and after insertion, connect again. And conductor 4
2 is pulled out from the conductor drum 50, passed through the tension device 51, and further passed through the guide roller 37, and its tip end is locked to the winding frame 38, and in this state, the motor 32 of the drive device 49 is operated. Then, the power is applied to drive pulley 4.
4-belt 46-intermediate pulley 45-belt 48-driven pulley 47, and one of the sprockets 35 is rotationally driven, so that the chain 39 and the entire winding frame 38 are rotated as indicated by arrow C in FIG. As shown, the conductor 42 is driven to run, and thereby the conductor 42 is further drawn out from the conductor drum 50, passes through the tension device 51 and the guide roller 37 in this order, and is wound around the winding frame 38, particularly the roller 40 row portion thereof. Therefore, the motor 32 is stopped, the winding start end of the conductor 42 is pulled out from the winding frame 38, and one of the rollers 4 is pulled out.
0 and is locked to the iron core 41. Then, when the motor 32 is operated again, the conductor 42 is wound on the insulating layer (not shown) of the leg portion 41a of the iron core 41 by the winding frame 38 which is driven to run in the same manner as described above, and at the same time, the conductor 42 is wound on the winding frame 38. 42 is further pulled out from the conductor drum 50 and wound. Incidentally, each time the conductor 42 is wound once around the leg portion 41a of the iron core 41, the iron core feeding table 52 feeds the iron core 41 by one pitch of the winding, thereby performing uniform aligned winding.

[Effects of the Invention] According to the present invention described above, the following effects can be obtained.

In the toroidal winding device according to claim 1, a winding frame is constituted by a chain and a large number of rollers arranged on the chain,
This winding frame is inserted into the center hole of the annular core, the conductor to be wound is passed between the rollers of the winding frame and locked onto the core, and then the winding frame is driven to travel by a drive device. Since the conductor can be wound directly around the core, and there is no need to use a conventional rotating bobbin, the cross-sectional shape of the core can be shaped like that of a bobbin. There is no need for approximation and the shape can remain rectangular, and therefore only one kind of ribbon with the same width is required, making it easy to wind and form the core. Furthermore, in this case, the winding frame, which is made up of the above-mentioned chain and a large number of rollers arranged on the chain, can be inserted linearly into the central hole of the iron core, and is not like a conventional circular wire storage frame. Since there is no bulge and, of course, there is no need to cover the legs of the iron core with bobbins, the center hole of the iron core can be made small enough to eliminate these concerns. The space factor of the winding can be improved, and the overall size can be reduced.

In the toroidal winding device according to claim 2, the winding frame in the above-described toroidal winding device has a shape that is the same as or similar to the figure derived from the locus drawn by the end of the conductor when the conductor tightly wound around the iron core is unwound. Since the shape is determined to be similar, the winding is the opposite, and the conductor can be wrapped around the core without loosening, thereby improving the space factor of the winding around the legs of the core. , it can contribute to further miniaturization of the whole, and also has good magnetic properties.
Furthermore, since it does not require a conventional pressure roller and a complicated mechanism or device for moving it along the legs of the iron core, the cost can be reduced.

In the toroidal winding method according to claim 3, in any of the toroidal winding devices described above, the winding of the conductor onto the winding frame and the winding from the winding frame onto the iron core are performed simultaneously. Therefore, these steps can be performed in one step instead of being divided into two steps, and therefore the time required for one winding can be shortened, and productivity can be improved.

[Brief explanation of the drawing]

1 to 5 show an embodiment of the present invention, in which FIG. 1 is an overall front view, FIG. 2 is a perspective view of main parts,
Figure 3 is an enlarged side view of a part of the winding frame, Figures 4 (a) to (d) are longitudinal sectional front views of the core and conductor, respectively, to explain the set shape of the winding frame, and Figure 5 is a side view of a portion of the winding frame. It is a longitudinal sectional front view about the same part for the same explanation. And Figures 6 and 7
The figures show a conventional one; FIG. 6 is an overall perspective view, and FIG. 7 is a longitudinal sectional view of the core leg. Further, Fig. 8 to Fig. 10 show different conventional ones, Fig. 8 is an overall front view, and Fig. 9 is a longitudinal sectional front view of the iron core, conductor, and winding frame showing the problem state. ,
FIG. 10 is a longitudinal sectional front view of the same part showing a conventional problem solving means. In the drawing, 38 is a winding frame, 39 is a chain, 40 is a roller, 41 is an iron core, 41b is a center hole of the iron core, 42 is a conductor,
43 is a curve (the locus drawn by the end of the conductor), 43' is a figure,
49 indicates a drive device.

Claims (3)

[Claims] 1. It consists of a chain and a number of rollers arranged on the chain, and is inserted into the center hole of an annular core so that the conductor to be wound can be passed between the rollers in order to lock it to the core. A toroidal winding device comprising a winding frame and a drive device installed to drive the winding frame. 2. 2. The toroidal winding according to claim 1, wherein the winding frame has a shape that is the same as or similar to a figure drawn from a locus drawn by an end of a conductor when the conductor that is tightly wound around the iron core is unwound. line equipment. 3. 3. The toroidal winding method according to claim 1, wherein the winding of the conductor onto the winding frame and the winding from the winding frame onto the core are performed simultaneously.