JPS592549A - Device for inserting coil and wedge into slot of magnetic core - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for inserting a coil and a wedge into slots of a magnetic core of a rotating electrical machine, and particularly relates to a device for inserting a coil and a wedge into slots of a magnetic core of a rotating electrical machine, where the space factor of the conductor in the slot of a stator is high. The present invention relates to a device suitable for inserting coils and wedges into a machine.

iE] Figures 3 through 3 show a conventional device for completely inserting a coil and wedge into a slot of a magnetic core of a rotating electric machine.

The conventional device shown in these figures includes a blade 1, a wedge guide 2, a wedge butcher 3, a base 4, and a
It is equipped with 4'-5 etc. A plurality of the blades 1 are arranged in a ring shape to match the slots 11 of the magnetic core 10, and one end of each blade 1 is fixed to the base 4. A plurality of wedge guides 2 are provided and arranged in a ring shape outside the blade l,
One end portion of each wedge guide 2 is also fixed to the base 4. The wedge butcher 3 is disposed within the ring of the wedge guide 2, and one end thereof is connected to a driving means such as a hydraulic cylinder (not shown), so that the wedge busher 3 moves back and forth along the wedge guide 2.

The Stritz f-5 has a structure shown in FIG. 2 (Al, (B)
As shown in FIG. 3, a plurality of fins 6 are provided at equal intervals in the circumferential direction, and grooves 7 are formed between adjacent fins 6, and the grooves 7 have grooves 7 as shown in FIG. , the blade 1 is fitted, and the stripper 5 is relatively arranged within the ring of the blade 1. Further, as shown in FIG. 1, the stripper 5 is connected to a rod 8 via a delt 9, and the rod 8 is connected to a driving means such as a hydraulic cylinder (not shown), and the stripper 5 is driven by the driving means. It is designed to move back and forth along the blade 1.

In addition, in FIGS. 1, 3 to 5, 12 is a slot liner, 13 is a tooth portion of a magnetic core, 14 is a coil, and 15 is a slot liner.
indicates a wedge.

In order to insert the coil 14 and the wedge 15 into the slot 11 of the magnetic core 10 using the conventional device, the strip z
+-5i Retract below the blade l as shown in the left half of FIG. Next, the pre-wound coil 14 is held at a predetermined position between circumferentially adjacent blades 1, and the wedge 15, which has been previously formed into a groove shape, is held at a predetermined position on the wedge guide 2. Next, the magnetic core 10 is inserted along the teeth 13'fil-blade 1 of the magnetic core 10, the magnetic core 10 is fixed by a stator positioning device (not shown), and the drive means and the rod 8 connected thereto are inserted. The stripper 5 is raised through the drive means as shown in the right half of FIG. 1, and the coil 14 is pushed up and inserted into the slot 11. The wedge 15 held by the wedge guide 2 is pushed up and inserted into the slot 11 as shown in FIG.

Subsequently, after raising the wedge button 3 and the stripper 5 to a preset position, they are pulled back to the original position shown in the left half of FIG. The operation of inserting the wedge 15 is completed, and a product in which the coil 14 and the wedge 15 are inserted into the slot 11 as shown in FIG. 4 is obtained.

By the way, when the coil 14 and the wedge 15 are inserted, the following forces (1) to (4) act as loads in the insertion direction of the wedge 15.

■ The pressing force exerted on the end face of the wedge 15 by the wedge butcher 3 ■ The frictional force at the contact surface between the wedge 15 and the strips and -5 ■ The frictional force at the contact surface between the wedge 15 and the coil 14 However, among the forces from ■ to ■, Since the contact surfaces of the members that generate frictional force are smooth and parallel to the axial direction of the magnetic core 10, the frictional forces of (1) and (2) are small, and therefore the insertion force of the wedge 15 is small. It does not contribute as such. Therefore, the insertion force of the wedge 15 is mainly the suppressing force (2).

On the other hand, in recent years, rotating electric machines have been required to save energy by increasing efficiency and save resources by being smaller and lighter.As an effective means to meet these needs, improvements in the space factor of conductors in slots have been attempted ( do.

However, when inserting the coil 14 and wedge 15 using the conventional device, although there are some differences depending on the specifications of the rotating electric machine, if the conductor space factor in the slot exceeds approximately Failures such as this occur.

That is, in the conventional device for inserting a coil and a wedge, as shown in FIGS. 1 and 3, the coil 14 and the wedge 15 are simultaneously inserted into the slot 1 by the action of the stripper 5.
Since the wedge is inserted in the axial direction of the magnetic core 10 while being pressed into the wedge 1, the space factor of the conductor in the slot increases.
5 against the slot liner 12, slot 11, etc. increases, and the insertion resistance of the wedge 15 increases.

On the other hand, the wedge 15 generally has a thickness of 0.25 to 0.35 m.
It is constructed by molding a synthetic resin film such as a polyester film into a groove shape, and has flexibility.

Therefore, the coil 14 and the wedge 1 are
5, as the insertion of the coil 14 and wedge 15 into the slot 11 progresses, the insertion resistance of the wedge 15 increases in proportion to this, and the end face of the wedge 15 that is still in contact with the wedge butcher 3 increases. Because the load of
As shown in FIG. 5, there are problems in which the wedge 15 is deformed, damaged, or incorrectly inserted. Furthermore, in some cases, the wedge bushing 3 may be deformed or damaged, which may not only reduce productivity and quality but also make production impossible.

An object of the present invention is to completely improve wedge insertability when inserting coils and wedges into the slots of the magnetic core of a rotating electrical machine where the conductor space factor in the stator slots is high. Another object of the present invention is to provide a device for inserting a coil and a wedge into a slot that allows the strut wire to be smoothly pulled out after the coil and wedge are fully inserted into the slot.

The first feature of the present invention is that a feed means for inserting the wedge is provided on the contact surface of the stripper with the wedge.With this configuration, the space factor of the conductor in the slot of the stator is high. However, the ease of inserting the wedge could be improved.

Further, the second feature of the present invention is that a feeding means for inserting the stripper is provided on the contact surface with the wedge of the stripper, and a feeding means is provided for the stripper to be inserted into the wedge when the stripper is pulled out. This configuration allows the strips and strips to be smoothly pulled out after inserting the coil and wedge into the slot.

Hereinafter, the present invention will be explained based on all the drawings.

17 and 10 show an embodiment Th of the first aspect of the present invention, in which a wedge is attached to the end surface of the fin 6 of the stripper 5, which is the contact surface with the wedge 15 in strips and -5. A plurality of sawtooth-shaped grooves 16 are provided at equal intervals in the length direction of the fin 6, and the grooves 16 are adjacent to each other in the length direction of the fin 6. Sawtooth-like teeth 17 are formed between the teeth 16.

In the device of this embodiment, the wedge butcher 3, the four wedge 8
and strip, 4'-5'fr@6 In the pulled back position as shown in the left half of the figure, the coil 14 is held between the adjacent blades 1, the wedge 15 is held between the wedge guide 2, and the wedge butcher 3 and Rod 8? When the coil 14 and wedge 15 are moved in the insertion direction, strips and -5 fins 6 are inserted into the wedge 15 as shown in FIGS. 8 and 9.
Sawtooth-like teeth 17 formed on the end surface of the plate are inserted into the plate.

Next, when the wedge button 3 and rod 8 are moved in the direction of insertion of the coil 14 and wedge 15, the coil 14 is inserted into the slot 11 of the magnetic core 10 by the action of the stripper 5, and at the same time the wedge button is moved. 3 and the serrated teeth 17 transport the wedge 15, and the wedge 15 is also smoothly inserted into the slot 11. Therefore, even if the space factor of the conductor in the slot is high, problems such as deformation, damage, or poor insertion of the wedge 15 can be completely eliminated, and the burden on the wedge gripper 3 can be reduced. 3
Deformation and damage can also be prevented.

Next, the coil 14 and the wedge 1 are placed in the slot ll.
After inserting the stripper 5, when the stripper 5 is moved in the pullback direction, the teeth 17 formed between the sawtooth grooves 16 from the wedge 15 inserted into the slot 11 together with the coil 14 come off as shown in FIG. Therefore, wedge 1
5 is maintained inserted into the slot 11, and the strip 5 is pulled back from the position shown in the right half of FIG. 6 to the position shown in the left half of FIG.

The other functions of the second structure of the embodiment shown in FIGS. 6 to 10 of the present invention are the same as those of the apparatus shown in FIGS. 1 to 3.

Next, FIGS. 11 to 14 show various other embodiments of the first aspect of the present invention.

FIG. 11 shows that on the end face of the fin 6 of Stritz-5,
A plurality of saw-tooth grooves 16' are provided at regular intervals in the length direction of the fin 6, and saw-tooth teeth are provided between adjacent grooves 16' in the length direction of the fin 6. 17
' is formed. These grooves 16' and teeth 17' are formed at an upward slope with respect to the insertion direction of the wedge 15, so that when the wedge 15 is inserted, the teeth 17' are easy to bite into the wedge 15, and the stripper 5 The embodiment is similar to the embodiment shown in FIGS. 6 to 10, except that the teeth 17' are easily removed from the inserted wedge 15 when the wedge 15 is pulled out.

Further, in the embodiment shown in FIG. 12, as a feeding means when inserting the wedge, on the end surface of the fin 6 of the stripper 5,
The embodiment is the same as the embodiment shown in FIGS. 6 to 10 above, except that a rubber 18 made of a material with high frictional resistance, such as rubber, is attached.

Furthermore, in the embodiment shown in FIG. 13, a fine horizontal groove 19 is formed by knurling on the end surface of the strits or -5 fin 6 as a feeding means when inserting the wedge. The embodiment shown in the figure is the same as the embodiment shown in Figs. 6 to 10 above, except that fine cross-shaped grooves are formed by knurling. This shows an embodiment of the second invention, in which a slide member U having saw-tooth grooves on the outer end surface and a coil spring field for operating the slide member are added to Stritz/f-21. and a cam 29, and these slide member U, coil spring 4, and cam 29 constitute a means for removing the feeding means of the p1 wedge 15 from the wedge 15. The slide member 24 is a stripper. 2] each fin n
Stritz J? -21 can move forward or backward in the radial direction. Furthermore, sawtooth grooves 5, which serve as feeding means for the wedge 15, are provided at equal intervals in the length direction on the outer end surface of the slide member. Sawtooth teeth are formed between adjacent grooves 5. Furthermore, a slope 27 that abuts the cam 29 is formed on the inner end surface of the slide member.

The coil spring 28Fi is formed in a ring shape,
and installed in the fitting groove provided in each slide member,
Each slide member 24 is biased backward in the radial direction of the stripper 21.

The cam 29 is formed in a cone shape with a slope 30 entirely on one half of the axial direction, and the slope comes into contact with the slope 27 of the slide member 24 and the slide member 24 is removed from the stripper 2.
It is designed to advance in 10 radial directions. moreover,
A long hole 31 is formed in the cam 4 at approximately the middle portion in the axial direction, and the fR cam 4 is accommodated in the accommodation chamber n formed in the IJ collar 21 mentioned above. The cam 4 is connected to the stripper 2 by a first pin 32 inserted into the elongated hole 31, and is mounted so as to be movable in the axial direction relative to the stripper 2.
A space 33 is provided between the end faces of the stripper 21 and the stripper 21 in the axial direction, and a Nihasa 34 is interposed in the space 33, and the cam 4 is connected to the stripper 21 within the range of the gap l set by the spacer 34. It is designed to be able to move in the axial direction. Furthermore, the cam 29 is connected to the rod 36 via a second pin 35,
6 is connected to a driving means such as a hydraulic cylinder (not shown).

Note that the other configurations are the same as those of the apparatus shown in FIGS. 1 and 6 above.

In the device of this embodiment shown in FIG. 15, the rod 36, the cam 4 and the IJ? -21k In the pulled back state as shown in the left half of Figure 15, the stripper-2
The slide member 24it incorporated in 1 is retracted in the radial direction of the strip 4'-21 by a ring-shaped coil spring.

In this state, coils 1 are attached to blades 1 adjacent to each other in the circumferential direction.
4, and the entire wedge 15 is held between the wedge guide 2, and then the rod 36 and the wedge gripper 3 are
When the coil 14 and wedge 15 are moved in the insertion direction,
The coil 14 and the wedge 15 are inserted into the slot 11 of the magnetic core 10, and in the process, the rod 36 causes the rod 36 to push against the fuselage horn and -21. The cam 4 is pushed in the axial direction by the gap l set by the spacer 34, and each slide member U is moved by the action of the slope side of the cam 29 and the slope n of the slide member U incorporated in the stripper 21. The stripper 21 is advanced in the radial direction against the spring force of the ring-shaped coil spring, and the teeth 26 formed between the sawtooth grooves 5 provided in each slide member row are pressed against the wedge 15. When the rod 36 and the wedge butcher 3 are further moved in the insertion direction of the coil 14 and the wedge 15 from the state where they are inserted, the magnetic core 10 is moved as shown in the right half of FIG. 15 by the action of the stritz e-21. At the same time as the coil 14 is inserted into the slot 11 of the wedge 15, the wedge 15 is conveyed by the circumferential movement of the wedge button 3 and the sawtooth teeth 26,
The wedge 15 is smoothly inserted into the slot 11.

As mentioned above, when the rod 36 and the wedge pusher 3 are moved in the returning direction after inserting the coil 14 and the wedge 15 into the 20-piece 11, the cam force is pulled back at the beginning of the return of the rod 4, and the cam 4 is moved back. When the stripper 2 is pulled back, each slide member 24 is moved simultaneously in the radial direction 1 [of the stripper 2] by the action of the ring-shaped coil spring, and as a result, the wedge 15 is forced into the slide member 24 (Q Sawtooth shape (teeth 26 are removed).

After the wedge 15 inserted into the slot 11 is removed, the serrated O-teeth 3 are removed, and then the rod y and the wedge grip 3 are moved back in the direction to be inserted into the slot 11. 1) After pulling out the collar 21, each member is returned to its original position as shown in the left half of FIG. 15.

Regarding other functions of this device, see FIG. 1 above.

This is the same as described for the apparatus shown in FIG.

Next, FIGS. 16, 17, and 18 show various embodiments of the second aspect of the present invention.

In the one shown in FIG. 16, a rubber run made of a material with high frictional resistance such as rubber is attached to the outer end surface of the slide member U.

In the case shown in FIG. 17, fine lateral grooves 39 are formed on the outer end faces of the slide member rows by knurling.

In the case shown in FIG. 18, fine intersecting grooves 40 are formed on the outer end surface of the slide member U by knurling.

The other structures and functions of the embodiment shown in FIGS. 16 to 18 are the same as those of the embodiment shown in FIG. 15.

Next, FIG. 19 and FIG. Grooves 43 for assembling the claws are formed at equal intervals in the direction,
The valley groove 43 has a claw 44 which is a feeding means for the wedge 15.
is included. The winter melon 44 is attached via a pin 45 so that it can rotate within the groove 43 in a direction away from the wedge 15 when the stripper 41 moves in the pulling direction.

In the apparatus of the embodiment shown in FIG. 19 and FIG. I will transport all of this.

Next, the coil 1 is inserted into the slot of the magnetic core (not shown).
4 and the wedge 15 are inserted, when the strut f-41 is moved in the fully retracted direction, the pawl 44 rotates via the pin 45t and is removed from the wedge 15 as shown in FIG. 41k can be pulled out smoothly.

In this embodiment, one or two claws 44 may be provided.

The present invention has the above-described configuration 2, and according to the first aspect of the present invention, feeding means for inserting the wedge is provided on the contact surface of the stripper with the wedge,
When inserting the coil and wedge into the slots of the magnetic core, the wedge is transported by the feeding means, so even if the space factor of the conductor in the slot of the stator is high, the wedge can be inserted smoothly. Since the wedge can be inserted into the wedge, it is possible to prevent the wedge from being deformed or damaged due to insertion failure, and it is also possible to prevent problems such as deformation or damage to the wedge button.

Furthermore, according to the second aspect of the present invention, means for removing the wedge feeding means from the wedge when the stripper is pulled back? Because of this provision, the feeding means is reliably removed from the wedge when the stripper is pulled back, resulting in a special effect in which the stripper can be smoothly pulled out after inserting the coil and wedge into the slot.

[Brief explanation of drawings]

Fig. 1 is a longitudinal sectional view of the conventional device, Fig. 2 (Al is S of the conventional device), a perspective view of the IJ collar, Fig. 2 (Bl is an enlarged view of part ①8 in Fig. 2 fAl, Figure 3 shows the summer in Figure 1.
■An enlarged cross-sectional view of the wire cut, Fig. 4 is an enlarged cross-sectional view of the state where the coil and wedge are inserted into the slot of the magnetic core, Fig. 5 is an explanatory diagram of the wedge insertion trouble that occurs with the conventional device, and Fig. 6 is A vertical cross-sectional view of an embodiment of the first invention of the present invention, No. 7Qi3g is a perspective view of the stripper of the same embodiment, FIG. 7 (Bl is an enlarged view of the ■□ part in FIG. , FIGS. 9 and 10 are operation explanatory diagrams showing the main parts enlarged, and FIGS. 11, 12, 13 and 14 are various other embodiments of the first invention of the present invention. FIG. 15 is a longitudinal sectional view showing an embodiment of the second invention of the present invention; FIGS. 16, 17, and 18 are views of the second invention of the present invention. FIG. 19 and FIG. 1...Blade, 2...Wedge guide, 3...
Wedge Butsusha, 5... Stritz, 6...
Stritz 4-fin, 8... Rod for stripper operation, 10... Magnetic core, 11... Slot, 1
4...Coil, 15...Wedge, 16, 16'
...Sawtooth groove that is a feeding means when inserting wedge, 18...Rubber, 19.20...Groove formed by knurling, 2J...Stritz/F
-122... Fin, Sae... Slide member, 5...
Sawtooth groove, 27... Slope, Public... Ring-shaped coil spring, 29... Cam, Machining... Slope,
33...The space formed between the stripper and the cam, the spacer! ... Gap snacking, 36... Rod, Attack... Rubber, 39° 40... Groove formed by knurling, 41... S) IJ horn-14
2... Fin, 43... Groove for claw assembly, 44...
・Claw for feeding the wedge, 45...pin. Representative Patent Attorney Tadashi Akimoto Figure 1 Figure 2 (A) (BS Figure 3 Figure 6 Figure 7 (A) CB) Figure 8 Figure 9 Figure 10 Figure 11 Figure 2 ( Figure 12 1) - Figure 15 Figure 16 Figure 2

Claims (1)

[Claims] 1. A pre-wound = fill is hooked and held between adjacent blades of the plurality of blades arranged in a ring shape, and held by a plurality of wedge guides arranged in a ring shape,
Holding a groove-shaped wedge, a striper is advanced into the ring of the blade, and a coil is inserted into the slot of the magnetic core. At the same time, a wedge gripper is advanced into the ring of the wedge guide, and the striper is advanced into the slot of the wedge guide. In a device for inserting a wedge, the above-mentioned Stritz) J? - A device for inserting a coil and a sea urchin into a slot of a magnetic core, characterized in that a feeding means for inserting the wedge is provided on the contact surface with the sea urchin. 2. An apparatus for inserting a coil and a wedge into a slot of a magnetic core according to claim 1, wherein the feeding means is a sawtooth groove. 3. A device for inserting a coil and a wet wire into a slot of a magnetic core according to claim 1, wherein the feeding means is made of a rubber material with high frictional resistance. Apparatus for inserting coils and wedges into slots of a magnetic core as claimed in claim 1, wherein the means are knurled. 5. Hook and hold the pre-wound coil between adjacent blades of the plurality of blades arranged in a ring, and insert the groove-shaped wedge into the plurality of wedge guides arranged in the ring. In an apparatus for holding the blade, advancing the striper into the ring of the blade, inserting the coil into the slot of the magnetic iron core, and at the same time fully advancing the wedge thruster into the ring of the wedge guide, and inserting the wedge into the slot, (a) A slot of a magnetic core characterized in that a means is provided on the contact surface of the IJ collar with the wedge for the feeding means when inserting the wedge, and a means for removing the feeding means from all the wedges when the stripper is pulled back. Insert the entire coil and wedge into the device. 6. The means for removing the feeding means from the wedge includes a sliding member that has the feeding means and is incorporated so as to be able to move forward and backward in the radial direction of the strip/4'-, and a member that urges the sliding member in the backward direction. 2. A device for inserting a coil and a wedge into a slot of a magnetic core according to claim 1, characterized in that the device comprises: a cam that advances the slide member when the stripper is pulled back; 7. The feeding means and the means for removing the feeding means from the wedge are claws that rotate in a direction to be removed from the wedge when the stripper is pulled back. device for inserting coils and wedges into