JP2004187395A - Transfer tool and method for coil winding - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a transfer tool and a method for winding a coil which is applicable to the manufacture of a number of continuous coils and which prevents a crossover from crossing the outside of the coil. <P>SOLUTION: This transfer tool 10 comprises the even number pairs of pins 11a, pins 11b disposed between the pins 11a, substrates 12 and 13, and a retaining member 14. Either of ends of the pins 11a is retained by the substrate 12 or the substrate 13, and both the ends of the pins 11b are retained by the substrate 12 and the substrate 13. The two pins 11a retained by the substrate (12 or 13) on the same side are disposed between the respective pins 11b, and the pins 11a (two) retained by the substrate 12 and the pins 11a (two) retained by the substrate 13 are alternately disposed. Moreover, the substrate 12 is detachable from the pins 11a, 11b. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a coil winding transfer tool and a coil winding method for winding a coil inserted into a core of a motor or the like. More specifically, the present invention relates to a coil winding transfer tool and a coil winding method for continuously forming a plurality of coils by a continuous conductor.
[0002]
[Prior art]
BACKGROUND ART Conventionally, there is a motor stator or the like having a plurality of salient poles and a coil attached to each salient pole. There is a coil winding machine for continuously forming a plurality of coils to be mounted on such a motor stator or the like with a continuous conductor (for example, see Patent Documents 1 and 2).
[0003]
The coil wound by the coil winding machine described in Patent Document 1 is transferred to a transfer tool 101 as shown in FIGS. These figures show a state in which, from the winding start Ls to the winding end Le, eight coils whose winding directions are alternately changed are connected to each other by a crossover Lc and wound by a continuous conductor L. ing. The transfer tool 101 of this coil winding machine has a group of three pins 103 fixed to a substantially annular substrate 102 almost vertically to the substrate 102. Here, FIG. 8 is a diagram of the transfer tool 101 viewed from the tip end side of the pin 103 in the axial direction. FIG. 9 is a view of the transfer tool 101 cut away at the position P in FIG. 8 and viewed from the outer peripheral side.
[0004]
In this coil winding machine, as shown in FIG. 10, a winding frame 104 is provided on the tip side of a pin 103 of a transfer tool 101. By rotating the winding frame 104, the conductive wire L to which the tension T is applied is wound around the winding frame 104. In this figure, the tension nozzle is moved in the R direction while rotating the winding frame 104 in the Q direction, and the strip-shaped conductive wire L is wound on the winding frame 104. The coil thus formed is transferred between the pins 103 of the transfer tool 101.
[0005]
Next, the wire L at the end of the previous coil is attached to the bobbin 104, and the next coil is continuously wound therefrom. At this time, the winding direction (the rotation direction of the winding frame 104) is reversed. Further, when the coil is wound, the transfer tool 101 is also rotated in synchronization with the winding frame 104, so that the conductive wire L can be prevented from being twisted. In this way, by successively forming the coils and transferring them to the transfer tool 101, a plurality of coils are continuously formed by the continuous conducting wire L as shown in FIGS.
[0006]
Further, in the method for manufacturing a coil unit for a rotating machine described in Patent Document 2, a plurality of coils connected in a stepwise manner are wound by shifting the winding shaft in a stepwise manner at a connection portion of each coil (coiling). Process). A plurality of coils formed in a step-like manner by one conductor in this way are turned 180 degrees at the connection portion (twisting step). Thereby, each coil is in a state in which the winding level is opposite to that of the adjacent coil and the height levels are uniform. Therefore, a coil in which forward and reverse windings are alternately continued can be formed from one conductive wire.
[0007]
[Patent Document 1]
JP-A-2000-134876 (page 3-4, FIG. 1)
[Patent Document 2]
JP-A-2002-10583 (page 2, FIG. 12-13)
[0008]
[Problems to be solved by the invention]
However, in the coil winding method using the coil winding machine described in Patent Document 1, in order to prevent the crossover Lc from the previous coil from being wound when the coil is wound, as shown in FIG. It is necessary to wind the coil in a direction away from 101. That is, regardless of the winding direction of the coil, the winding start position is on the substrate 102 side in the axial direction of the transfer tool 101 in all the coils. The winding end position is on the tip side of the pin 103. Therefore, as shown in FIG. 9, the crossover line Lc extending from the winding end position of the previous coil to the winding start position of the next coil crosses the outside of each coil. This may cause the crossover Lc to become entangled with each coil when the coil is inserted into a slot portion of a motor stator or the like. In the case of entanglement, there is a problem that an increase in insertion load or a decrease in insulation due to damage to the conductor may occur.
[0009]
Further, the technique described in Patent Document 2 requires two steps of a coiling step and a twisting step, and the work is complicated. Furthermore, as the number of coils increases, the size of the device increases accordingly, and the coil portion to be turned 180 degrees in the twisting process increases, so that the coil is easily deformed. Therefore, there is a problem that it is not suitable for manufacturing a large number of continuous coils.
[0010]
The present invention has been made to solve the problems of the conventional coil winding method described above. That is, an object of the present invention is to provide a coil winding transfer tool and a coil winding method which are suitable for manufacturing a large number of continuous coils and in which a crossover does not cross the outside of the coil.
[0011]
[Means for Solving the Problems]
The transfer tool for coil winding according to the present invention, which has been made to solve this problem, has an even number of sets of four or more coil holding members, the same number of coil separation members as the number of coil holding members, and the number of coil holding members. A first holding member and a second holding member for holding an end portion and an end portion of each coil separating member, wherein each of the coil holding members holds one end by the first holding member or the second holding member; Each of the coil separating members has both ends held by a first holding member and a second holding member, and a coil holding member held by the first holding member and a coil holding member held by the second holding member. Are alternately arranged, and the first holding member is detachable from each coil holding member and each coil separating member.
[0012]
According to the coil winding transfer tool of the present invention, each coil is carried by each set of coil carrying members in a state where each coil is separated by each coil separating member. Furthermore, since the ends of the coil holding members are alternately held by the first holding members and the second holding members, the coils can be held from the side where the coils are not held. In other words, this transfer tool can receive coils alternately from both sides. Therefore, by arranging the winding frames on both sides of the transfer tool, it is possible to wind the coil in the winding direction from the first holding member side to the second holding member side and the coil in the opposite direction. If the coils having different winding directions are carried alternately by the coil carrying member, the winding end position of one coil and the winding start position of the next coil can be on the same side. Thereby, the crossover between these coils does not cross the outside of the coil, but is connected to the adjacent coil through the shortest distance. Therefore, it is also suitable for manufacturing a large number of continuous coils, and it is possible to provide a coil winding transfer tool in which a crossover does not cross the outside of the coil.
[0013]
Furthermore, the coil winding transfer tool of the present invention has a third holding member for detachably holding the opposite end of each coil holding member held by the first holding member, and the third holding member includes: In a state in which the first holding member is detached from the coil holding member, it is desirable that the entire shape of each coil holding member and each coil separating member be maintained.
If the third holding member 2 is used, it is possible to remove the first holding member while maintaining the overall shape in a state where the coil is held by each coil holding member and each coil separating member. Thereby, one end of each coil carrying member and each coil separating member is opened. Therefore, the held coil can be removed for use in the next step.
[0014]
Further, the present invention provides a four or more even number of coil holding members, the same number of coil separating members as the number of coil holding members, the first end holding each coil holding member and the end of each coil separating member. Each coil holding member has a holding member and a second holding member, and one end of each of the coil holding members is held by the first holding member or the second holding member. A transfer tool for coil winding, wherein the transfer tool is held by a member and a second holding member, and a coil holding member held by the first holding member and a coil holding member held by the second holding member are alternately arranged; And a coil wound in a direction away from a position close to the first holding member by the first winding frame using the first winding frame and the second winding frame on the first holding member side and the second holding member side, and the wound coil Is the The coil is transferred from the winding frame to a coil holding member that is not held by the first holding member, and is held by the second winding frame. The present invention also extends to a coil winding method in which the second winding frame is transferred to and held by a coil holding member that is not held by the second holding member, and the above-described winding by the first winding frame and the second winding frame is alternately repeated. .
[0015]
Further, the coil winding method of the present invention further uses a third holding member for detachably holding the second holding member or the opposite end of each of the coil holding members held by the second holding member. Later, a third holding member is attached to the end on the first holding member side or the end on the second holding member side, and one of the first holding member and the second holding member on which the third holding member is not attached. It is desirable to remove the coil and then insert the coil into the core.
[0016]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. This embodiment is a coil winding transfer tool for winding eight coils with a continuous conductor and a coil winding method using the transfer tool.
[0017]
As shown in FIG. 1, the transfer tool 10 according to the present embodiment includes a plurality of pins 11, substrates 12, 13 attached to both ends thereof, and a holding member 14. As shown in FIGS. 1 and 2, eight sets of three pins 11 are arranged at equal intervals, each having a total of 24 pins. All the pins 11 are parallel to each other and arranged so as to form a substantially cylindrical shape as a whole. Also, a slight gap is provided between the adjacent pins 11 (11a) and 11 (11b) in each set so that a conductive wire wound around a coil can be sandwiched therebetween.
[0018]
As shown in FIGS. 1 and 2, each of the substrates 12, 13 is a plate-shaped member having arcuate portions 12b, 13b corresponding to an inner angle of about 45 degrees on the outer peripheral side of the substantially cross-shaped portions 12a, 13a. . The arc portions 12b and 13b have substantially the same diameter as the arrangement of the pins 11, and a portion of the pin 11 is fixed near both ends of the arc portions 12b and 13b as described later. The two substrates 12 and 13 are attached to the pins 11 while being rotated by 45 degrees with respect to each other. Here, the substrates 12 and 13 correspond to a first holding member and a second holding member.
[0019]
Next, the arrangement relationship between the pins 11 and the substrates 12 and 13 will be described. Here, the set of three pins 11 is distinguished into a pin 11a at both ends and a pin 11b at the center as shown in FIGS. The pins 11a at both ends are attached to one of the substrates 12 and 13. The two pins 11a in each set are mounted on different substrates (12 or 13), respectively, and the pins 11a on adjacent sides of the adjacent sets are mounted on the same substrate (12 or 13). The center pin 11b has one half of the other end attached to the substrate 12 and the other half of the other end attached to the substrate 13. Therefore, as shown in FIG. 2, the pin 11 shown by a broken line in the figure is attached to the substrate 12 at the end on the near side in the figure. A pin 11 indicated by a solid line in the figure is attached to the substrate 13 at an end on the other side in the figure. The board 12 is detachable from the pins 11.
[0020]
That is, for example, when viewed from the side of the substrate 12, the coil can be sandwiched in a gap between the pins 11a and 11b that are not attached to the substrate 12 (attached to the substrate 13). Further, between the two arc portions 12b of the substrate 12, there is one of the above-mentioned gaps on each side. Therefore, by using these, one coil can be held between the two arc portions 12b while maintaining its shape. When the coils are held as described above, a set of two pins 11a at both ends holding one coil corresponds to a coil holding member, and a pin 11b at the center of each set corresponds to a coil separating member.
[0021]
As shown in FIG. 1, the holding member 14 has a substantially annular shape, and has a concave portion 14a in which the substrate 13 is fitted and a concave portion 14b in which the pin 11 not fixed to the substrate 13 is fitted. When the holding member 14 is attached from outside the substrate 13, as shown in FIG. 3, all the pins 11 are held by the substrate 13 and the holding member 14. If the substrate 12 is removed from the pins 11 in this state, the pins 11 are held in the same arrangement. Here, the holding member 14 corresponds to a third holding member.
[0022]
Next, a coil winding method using the transfer tool 10 according to the present embodiment will be described with reference to FIGS. Note that, in these figures, the transfer tool 10 is cut open, as in FIG. 9 shown in the related art. In this coil winding method, winding frames 21 and 22 are arranged on both outer sides in the axial direction of the transfer tool 10, respectively. Then, a coil is formed by using these winding frames 21 and 22 alternately, and is sequentially transferred to the transfer tool 10.
[0023]
FIG. 4 shows a state where the third coil is wound. The conductor L started to be wound from the winding start Ls has the winding end position of the second coil on the substrate 13 side, and is wound therearound from the winding frame 21 on the left side in the drawing. A tension T is applied to the conductor L, and the conductor L is wound in the direction R away from the transfer tool 10. In this figure, the bobbin 21 is rotated in the Q direction in the figure. When a coil having a predetermined number of turns is wound on the winding frame 21, the transfer tool 10 and the winding frame 21 are brought close to each other, and the coil is transferred to the transfer tool 10. As a result, as shown in FIG. 5, a total of three coils have been transferred to the transfer tool 10, and the last winding end position is on the substrate 12 side.
[0024]
Next, the conducting wire L from the end of winding of the third coil is wound around the winding frame 22 on the right side. Then, a tension T is applied to the conductive wire L, and the winding frame 22 is rotated in the Q ′ direction and wound in the R ′ direction away from the transfer tool 10. Then, when a predetermined number of coils are wound on the winding frame 22, the coil is transferred to the transfer tool 10. In this way, the winding frame 21 and the winding frame 22 are used alternately, and in any case, the conductor L is wound in a direction away from the transfer tool 10. That is, the coil formed by the winding frame 21 is wound from the substrate 13 to the substrate 12, and the coil formed by the winding frame 22 is wound from the substrate 12 to the substrate 13. Thus, the end of the winding of the previous coil and the beginning of the winding of the next coil can be on the same substrate side.
[0025]
FIG. 6 shows a state in which the coils have been transferred to all the pins 11 of the transfer tool 10. In this figure, the arrow on the right side of each coil indicates the winding direction of the coil. As shown in FIG. 6, in a state where all the coils have been wound, one conductor L forms eight coils whose winding directions are alternated from the winding start Ls to the winding end Le. Moreover, according to this winding method, the winding end position of the previous coil and the winding start position of the next coil are on the same side, so that the crossover line Lc between the coils is passed in the direction along the winding of the coil. . As a result, the crossover Lc is not crossed over the coil as in the case where the conventional transfer tool 101 is used, but is passed to the nearest end of the next coil.
[0026]
When all the coils have been transferred to the transfer tool 10 in this manner, the holding member 14 is attached to the substrate 13 side. Thus, all the pins 11 are held on the right side in FIG. Thereafter, when the substrate 12 is removed, the left side is completely opened as shown in FIG. This is almost the same shape as the conventional transfer tool 101, and since all the pins 11 are held similarly to the conventional transfer tool 101, there is no separation. Therefore, all the coils can be simultaneously removed to the left side in the drawing and inserted into the stator core or the like. Furthermore, since the connecting wire Lc between the coils does not cross the conducting wire of the coil, the connecting wire Lc does not become entangled with the coil during insertion.
[0027]
As described in detail above, according to the transfer tool 10 and the coil winding method using the transfer tool 10 of the present embodiment, even if the number of coils increases, the scale of the apparatus does not change, so that a large number of Also suitable for manufacturing coils. Furthermore, since the winding frames 21 and 22 are arranged on both sides of the transfer tool 10 and used alternately, the crossover Lc between the coils does not cross the conductors of the coils. Therefore, the coil winding transfer tool and the coil winding method were suitable for the production of a large number of continuous coils, and the crossover wires did not cross the outside of the coil.
[0028]
Note that the present embodiment is merely an example, and does not limit the present invention in any way. Therefore, naturally, the present invention can be variously modified and modified without departing from the gist thereof.
For example, the transfer tool 10 of the above embodiment is configured to wind eight coils, but the number of coils to be formed is changed by changing the number of pins 11 and the shapes of the substrates 12 and 13. You can also.
Further, for example, in the coil winding method of the above-described embodiment, the winding direction of the coil is alternately changed between normal and reverse. However, by changing the rotation direction of the winding frames 21 and 22, the winding direction is changed to only the normal direction or the reverse direction. It is also possible to form the coil only in the direction.
Further, for example, the shapes of the substrates 12 and 13 and the holding member 14 are not limited to these. The substrates 12 and 13 only need to be able to hold necessary pins 11, and the holding member 14 needs to be able to hold all the pins 11 together with the substrate 13. The substrate 12 can also have the function of the holding member 14.
Further, for example, in the above embodiment, the coil carrying member is constituted by the two pins 11a, 11a, but may be a single plate-like member if the winding frame allows.
[0029]
【The invention's effect】
As is apparent from the above description, according to the present invention, there is provided a coil winding transfer tool and a coil winding method which are suitable for manufacturing a large number of continuous coils and in which a crossover does not cross the outside of the coil.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a transfer tool according to the present embodiment.
FIG. 2 is a side view showing a transfer tool.
FIG. 3 is a partial cross-sectional view showing the transfer tool with a holding member attached.
FIG. 4 is an explanatory view showing a coil winding method.
FIG. 5 is an explanatory diagram showing a coil winding method.
FIG. 6 is an explanatory diagram showing a state where a coil is transferred to a transfer tool.
FIG. 7 is an explanatory diagram showing a state where a coil is transferred to a transfer tool.
FIG. 8 is an explanatory diagram showing a state where a coil is transferred to a conventional transfer tool.
FIG. 9 is an explanatory diagram showing a state where a coil is transferred to a conventional transfer tool.
FIG. 10 is an explanatory diagram showing a conventional coil winding method.
[Explanation of symbols]
10 Transfer tool 11a Pin (coil carrying member)
11b pin (coil separating member)
12 Substrate (first holding member)
13 Substrate (second holding member)
14 Holding member (third holding member)
21,22 Reel

Claims (4)

4 or more even sets of coil carrying members,
The same number of coil separating members as the number of the coil carrying members;
A first holding member and a second holding member for holding an end of each of the coil holding members and an end of each of the coil separating members;
Each of the coil holding members has one end held by the first holding member or the second holding member,
Each of the coil separating members has both ends held by the first holding member and the second holding member,
A coil holding member held by the first holding member and a coil holding member held by the second holding member are alternately arranged;
The transfer tool for coil winding, wherein the first holding member is detachable from each of the coil carrying members and each of the coil separating members. The transfer tool for coil winding according to claim 1,
A third holding member for detachably holding an opposite end of each coil holding member held by the first holding member;
The third winding member, when mounted on the coil holding member, maintains the overall shape of each of the coil holding members and each of the coil separating members when the first holding member is removed. Transfer tool for wires. Four or more even-numbered coil-carrying members, as many coil-separating members as the number of coil-carrying members, and a first holding member for holding the ends of the coil-carrying members and the ends of the coil-separating members And a second holding member, wherein each of the coil holding members has one end held by the first holding member or the second holding member. A coil held by a first holding member and the second holding member, wherein a coil holding member held by the first holding member and a coil holding member held by the second holding member are alternately arranged. Transfer tool for winding,
Using the first winding frame and the second winding frame on the first holding member side and the second holding member side,
A coil is wound by the first winding frame in a direction away from a position close to the first holding member, and the wound coil is transferred from the first winding frame to a coil holding member that is not held by the first holding member. Instead carry
A coil is wound by the second winding frame in a direction away from a position close to the second holding member, and the wound coil is transferred from the second winding frame to a coil holding member that is not held by the second holding member. Instead carry
A coil winding method, wherein the above-described winding by the first winding frame and the second winding frame is alternately repeated. The coil winding method according to claim 3,
A second holding member or a third holding member for detachably holding an opposite end of each coil holding member held by the second holding member;
After completion of the winding, the third holding member is attached to the end on the first holding member side or the end on the second holding member side,
Of the first holding member and the second holding member, remove the one on which the third holding member is not mounted,
A coil winding method characterized by providing a coil to a core in that state.

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