JP3815394B2 - Conductor segment forming equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a conductor segment forming apparatus for forming a conductor segment to be assembled to a stator or the like of a rotating electrical machine.
[0002]
[Prior art]
As a stator for a rotating electrical machine, a stator having a plurality of substantially U-shaped conductor segments inserted into slots of a stator and the ends thereof joined by welding or the like is known.
[0003]
As a conductor segment forming apparatus for forming this substantially U-shaped conductor segment, there is a technique disclosed in Japanese Patent Laid-Open No. 2000-343137.
[0004]
[Problems to be solved by the invention]
However, the above-described conductor segment forming apparatus inserts the conductor segments one by one into the forming apparatus and performs twist forming. Therefore, it takes a lot of time to insert the conductor segments, and as a result, it takes a long time to form. there were.
[0005]
This invention is made | formed in view of this subject, and is shortening the shaping | molding time of a conductor segment.
[0006]
[Means for Solving the Problems and Effects of the Invention]
In order to achieve such an object, in the invention according to claim 1, a conductor including a twist forming portion that twists a substantially U-shaped conductor segment, and a supply portion that supplies the conductor segment to the twist forming portion. In the segment forming apparatus, the supply unit has holding slots for holding a plurality of conductor segments, the holding slots are open at both ends thereof, and the plurality of the plurality of holding slots from both ends of the holding slot. The conductor segment can be taken in and out , and the supply section includes an outer ring, an inner ring disposed to face an inner periphery of the outer ring, and an annular space formed between the outer ring and the inner ring. partitioned by having a retainer and a plurality of intermediate plate forming the retaining slot, and processed the conductor segments abutting surface to a smooth surface this Adopting conductor segments forming apparatus according to claim.
[0007]
By adopting such a configuration, the conductor segments are respectively housed and transported in a plurality of holding slots that are open at both ends, and the conductor segments are pushed out from one opening end, so that a plurality of pieces are formed from the other opening end. Since the conductor segments can be inserted into the twist forming portion at a time, the forming time can be shortened.
[0009]
In this configuration, since the outer ring, the inner ring, and the intermediate plate are separate parts, the surface in contact with the conductor segment can be easily processed into a smooth surface, and the insulating film of the conductor segment is damaged. Can be prevented.
[0010]
The invention according to claim 2 is characterized by comprising a fixing plate for concentrically fixing the outer ring and the inner ring.
[0011]
In this configuration, the outer ring and the inner ring, which are separate parts, can be integrally fixed by the fixing plate, and the holder can be easily handled.
[0012]
According to a third aspect of the present invention, the intermediate plate is made of a synthetic resin material.
[0013]
In this configuration, the insulating plate of the conductor segment can be prevented from being damaged by using the synthetic resin material for the intermediate plate that rubs against the conductor segment.
[0014]
According to a fourth aspect of the present invention, the intermediate plate is made of bakelite.
[0015]
With this configuration, it is possible to prevent damage to the insulating coating of the conductor segment at a low cost. In the invention according to claim 5 , the conductor segment is slightly engaged with the conductor segment to restrict the conductor segment from falling out of the holding slot, and a force to push out from the holding slot is applied to the conductor segment. In some cases, the conductor segment has an engagement piece that allows the conductor segment to be detached from the holding slot.
[0016]
With this configuration, when a conductor segment is inserted into a holding slot that is open at both ends and transported, the conductor segment can be prevented from falling out of the holding slot with a simple configuration, and the conductor segment can be easily inserted into the twist forming section. it can.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a top view of a conductor segment forming apparatus showing an embodiment of the present invention. The conductor segment forming apparatus includes a supply unit 1, a twist forming unit 2, and a temporary assembly unit 3.
[0018]
The supply unit 1 includes a holder 10 shown in FIG. 2 described later and a transport mechanism (not shown) on which the holder is placed.
[0019]
The twist forming portion 2 is an apparatus disclosed in Japanese Patent Application Laid-Open No. 2000-343137, and a pair of straight portions of a substantially U-shaped conductor segment are inserted into an inner jig and an outer jig, respectively, and the inner jig and the outer jig are inserted. The conductor segment is twisted by rotating relative to the jig.
[0020]
The temporary assembly portion 3 is formed on the holder 10 of the supply portion 2 as shown in FIG. 5 by combining two conductor segments 31 formed in a substantially U shape shown in FIG. 3 into a conductor segment set 32 shown in FIG. Then, it is temporarily inserted into a plurality of holding slots 15.
[0021]
Next, the structure of the holder 10 will be described in detail with reference to FIG.
[0022]
The holder 10 divides an annular space formed between the outer ring 11, the inner ring 12 disposed opposite to the inner periphery of the outer ring 11, and the outer ring 11 and the inner ring 12, and is a conductor segment. And a plurality of intermediate plates 13 forming a holding slot 15 for holding the. The intermediate plate 13 is fitted into a concave notch 16 formed on the inner periphery of the outer ring 11 and the outer periphery of the inner ring 12.
[0023]
The outer ring 11, the inner ring 12, and the intermediate plate 13 may each be formed from a ferrous metal, but may also be formed from a synthetic resin material that can reduce the frictional resistance with the conductor segment 31. In particular, when the intermediate plate 13 having a large area that rubs against the conductor segment 31 is made of a synthetic resin material, the frictional resistance when the conductor segment 31 is inserted into the holding slot 15 can be effectively reduced, and the insulating film of the conductor segment 31 is damaged. Can be prevented. As this synthetic resin material, by using bakelite, an inexpensive holder 10 that can reduce frictional resistance can be obtained.
[0024]
The inner ring of the outer ring and the outer periphery of the inner ring may be subjected to a surface treatment such as a PTFE coating to further reduce the frictional resistance.
[0025]
The holder 10 has a fixing plate 17 on its upper surface for fixing the outer ring and the inner ring concentrically. The fixing plate 17 fastens and fixes the outer ring and the inner ring with bolts (not shown). The fixing plate 17 is provided with a communication hole 18 that communicates with the holding slot 15.
[0026]
Furthermore, the holder 10 has a drop restricting plate 19 on its lower surface. The drop regulating plate 19 has a communication hole 20 that communicates with the holding slot 15, and the communication hole 20 has an engagement piece 21 that slightly engages the conductor segment. The engagement piece 21 restricts the conductor segment 31 from dropping downward, and allows the conductor segment 31 to fall downward when a force pushing out from the holding slot acts on the conductor segment 31.
[0027]
Next, the operation of this embodiment will be described.
[0028]
The provisional assembly 3 is supplied with conductor segments 31 formed in a substantially U shape shown in FIG. Also, conductor segments different in size from the conductor segments shown in FIG. 3 are supplied in a line. These two conductor segments are combined into a conductor segment set 32 shown in FIG. 4, and this is inserted into the holding slot 15 formed in the holder 10 of the supply unit 1 through the communication hole 20 from below the holder 10. Assemble temporarily as shown in FIG. Here, although the engagement piece 21 is provided in the communication hole 20, the conductor segment set 32 is allowed to pass through the communication segment 20 by elastic deformation of the conductor segment set 32, and the conductor segment set 32 falls due to the engagement of the engagement piece 21. Is preventing. After inserting a predetermined number of conductor segment sets 32 into the holder 10, the holder 10 is moved above the twist forming unit 2 by a transport mechanism (not shown). A conductor segment set 32 inserted into the holding slot 15 is pushed downward from the upper surface of the holder 10 by an unillustrated push-out mechanism above the twist forming portion 2, and a plurality of conductor segments are simultaneously formed on the forming jig of the twist forming portion 2. Set 32 is inserted. Also in the extrusion of the conductor segment set 32, the communication hole 20 is passed through the elastic deformation of the conductor segment set 32.
[0029]
As described above, in the conductor segment forming apparatus of the present embodiment, the conductor segment set 32 is accommodated and conveyed in the plurality of holding slots 15 opened at both ends, and the pushing mechanism is inserted from the communication hole 18 on the upper surface of the holder 10. Then, the conductor segment set 32 is pushed out, and the plurality of conductor segment sets 32 can be inserted into the twist forming portion 2 from the communication hole 20 on the lower surface of the holder 10 at a time, so that the molding time can be shortened. Further, since the outer ring 11, the inner ring 12, and the intermediate plate 13 are separate parts, the surface in contact with the conductor segment 31 can be easily processed into a smooth surface and rubbed against the conductor segment 31. However, the insulating coating of the conductor segment 31 can be prevented from being damaged.
[0030]
In the above description of the embodiment, the configuration in which the conductor segment 31 is taken in and out through the communication hole 20 provided on the lower surface of the holder 10 is shown. However, the conductor segment 31 is taken in and out from the communication hole 18 on the upper surface of the holder 10. It may be a configuration.
[Brief description of the drawings]
FIG. 1 is a top view of a conductor segment forming apparatus showing an embodiment of the present invention. FIG. 2 is a view showing a holder provided in the conductor segment forming apparatus of the present invention. Diagram showing conductor segment set [Fig. 5] Diagram showing conductor segment temporarily assembled [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Supply part 2 Twist molding part 10 Holder 11 Outer ring 12 Inner ring 13 Intermediate plate 15 Holding slot 17 Fixing plate 19 Drop regulation plate 21 Engagement piece 31 Conductor segment 32 Conductor segment set

Claims (5)

In a conductor segment forming apparatus, comprising: a twist forming portion that twists a substantially U-shaped conductor segment; and a supply portion that supplies the conductor segment to the twist forming portion. The supply portion holds a plurality of conductor segments. A holding slot, the holding slot is open at both ends thereof, and the plurality of conductor segments can be taken in and out from at least one end of the holding slot ;
The supply part partitions an annular space formed between the outer ring, an inner ring disposed to face the inner periphery of the outer ring, and the outer ring and the inner ring, and Having a holder with a plurality of intermediate plates to be formed; and
A conductor segment forming apparatus, wherein a surface in contact with the conductor segment is processed into a smooth surface . The conductor segment forming apparatus according to claim 1 , further comprising a fixing plate that concentrically fixes the outer ring and the inner ring. The conductor segment forming apparatus according to claim 2 , wherein the intermediate plate is made of a synthetic resin material. The conductor segment forming apparatus according to claim 3 , wherein the intermediate plate is made of bakelite. It slightly engages with the conductor segment to restrict the conductor segment from falling out of the holding slot, and when a force is applied to the conductor segment from the holding slot, the conductor segment is released from the holding slot. conductor segments forming apparatus according to any one of the four claims 1 having the engagement piece to allow for release.

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