JP3626267B2 - Coil insertion device for stator core - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a coil insertion device for a stator core particularly suitable for a large stator core.
[0002]
[Prior art]
For example, very large motors are used in pumps used in water and sewage, ventilation fans in highway tunnels, air conditioners in buildings, etc., and the stator core mounted on such motors has a diameter of And the length is large, and the weight is extremely heavy, for example, several hundred kilometers.
[0003]
Such a large stator core has a conventional general coil insertion device, that is, an annularly arranged blade, and a stripper provided with push teeth inserted into a gap between the blades on the outer periphery. If you try to apply a device that inserts the coil wound in the gap of the coil and inserts the coil by pushing it into the predetermined groove of the stator core with a stripper, the insertion jig such as blade and stripper becomes large, and the manufacturing cost Becomes extremely high. Moreover, the large motors as described above do not have a large number of demands, and there is a problem that even if expensive capital investment is made, it is not profitable.
[0004]
Therefore, at present, the operation of inserting the coil into the large stator core as described above is performed manually by a skilled worker. However, since this operation is an operation of pushing the wound coil little by little into each groove of the stator core using a pressing tool, there is a problem that a great amount of labor is required.
[0005]
As an apparatus for inserting a coil into such a large stator core, only one of the German company S is known. FIG. 23 shows the principle of this coil insertion device. That is, the blade 13 inserted from one end face of the stator core 11 is attached to the tips of some internal teeth 12 of the stator core 11. On the other hand, a plurality of coil holding rods 15 are erected on the pressing plate 14 serving as a stripper at intervals such that they are located inside the blade 13 to form a transfer tool 16.
[0006]
Then, the coil C is hooked in the gap between the coil holding rods 15 of the transfer tool 16, the transfer tool 16 is inserted from the end surface opposite to the blade 13 insertion side of the stator core 11, and directed toward the other end surface of the stator core 11. Push it in. As a result, the coil C is pushed by the pressing plate 14 and inserted into the groove 17 of the stator core 11 through the gap of the blade 13. At this time, the tip of the blade 13 is pushed by the pressing plate 14, and the blade 13 is extracted from the other end surface of the stator core 11.
[0007]
A wedge is connected to the rear side of the pressing plate 14 of the transfer tool 16 via a chuck (not shown), and the wedge follows the opening of the groove 17 after the coil C inserted into the groove 17 of the stator core 11. It is designed to be inserted so as to close it. Since the chuck is attached to the pressing plate 14 separately, the coil pressing portion (stripper portion) of the pressing plate 14 and the portion for clamping the wedge by the chuck are separated by about 50 mm.
[0008]
The above apparatus does not insert the coil C into all the grooves 17 of the stator core 11 at once, but makes the blade 13 and the transfer tool 16 for inserting into the several grooves 17 of the stator core 11 to perform the coil insertion operation. In this way, the manufacturing cost of the blade 13 and the transfer tool 16 can be reduced.
[0009]
[Problems to be solved by the invention]
However, in the conventional apparatus shown in FIG. 23, the coil C is once hooked on the coil holding rod 15 of the transfer tool 16, and the transfer tool 16 is inserted from the end face of the stator core 11. Since the predetermined gap is set, it is difficult to insert the transfer tool 16 into the stator core 11, and there is a problem that the work is complicated and the productivity is poor.
[0010]
Further, the pressing plate 14 acting as a stripper engages with the tip of the blade 13 and pushes out the blade 13 from the opposite end surface of the stator core 11, so that the coil C is actually a groove in the stator core 11. Since the blade 13 does not exist in the portion inserted into the groove 17 and the outer periphery of the pressing plate 14 is only located inside the groove 17, the insertion density of the coil C into the groove 17, that is, the so-called space factor is improved. I could not.
[0011]
Further, as described above, the coil pressing portion (stripper portion) of the pressing plate 14 and the portion for clamping the wedge by the chuck are separated by about 50 mm. Therefore, when the space factor is increased, the coil is inserted. There is a problem that the coil is easily damaged before the wedge is inserted. In addition, since the stripper portion and the wedge clamp portion are separated from each other, even if the coil insertion is completed, the wedge is not completely inserted, and there is a disadvantage that the wedge must be pushed further by hand. It was.
[0012]
On the other hand, in this type of large stator core, as shown in FIG. 24, one side portion of the loop of the coil C is put in a depth of a predetermined groove 17 of the stator core 11 and the other side portion of the loop is placed in another groove. In most cases, an insertion method in which the coil end runs obliquely with respect to the circumference, that is, an insertion method called so-called wrap winding, is adopted. Wrapping can improve the performance of the motor as compared with a normal coil insertion method, but it is necessary to divide the coil into several times, so it is used only for large stator cores.
[0013]
In this wrap winding, it is necessary to insert the coil C in two stages into one groove 17 of the stator core 11. For this reason, the coil C inserted first is connected to a pressing device 18 as shown in FIG. I had to use it and push it in manually. The pressing instrument 18 has a structure in which a pressing portion 21 is provided on a bar 19 via an arm 20. In the conventional coil insertion device shown in FIG. 23, such coil forming cannot be mechanically performed.
[0014]
Accordingly, an object of the present invention is to provide a relatively inexpensive coil insertion device capable of inserting a coil into a large stator core with good workability and a high space factor.
[0015]
Another object of the present invention is to provide a coil insertion device capable of inserting a coil into a large stator core and performing coil molding by pushing the inserted coil into the depth of the groove of the stator core. There is.
[0016]
[Means for Solving the Problems]
In order to achieve the above object, the coil insertion device of the present invention comprises:
A center post protruding in parallel to the upper surface of the base from a frame standing on one side of the base;
A core mounting base installed on a slider disposed on the upper surface of the base so as to be movable in the axial direction of the center post, and supporting the stator core so that the center post enters the center of the stator core;
A blade holder that holds a base portion of a plurality of blades fitted to selected internal teeth of the stator core, is detachably attached to a peripheral wall of a tip portion of the center post, and supports the blade in parallel with the center post When,
A stripper movable block that is attached to the tip of the center post and is movable in the axial direction of the center post;
A blade fitting groove that is detachably attached to the stripper movable block or a portion connected to the stripper and that fits the blade into a part of the outer periphery, and a coil that protrudes between the blade fitting grooves is connected to the stator core. A stripper block having a pushing tooth to be pushed into the groove and a wedge holding portion provided at the rear end of the pushing tooth is provided.
[0017]
Further, in a preferred aspect of the present invention, a coil forming jig is attached to the base side of the center post, and the coil forming jig is inserted into the groove of the stator core, and the tip portion is tapered. It has a forming blade.
[0018]
Furthermore, in a preferred aspect of the present invention, a stripper support block that can further protrude in the axial direction with respect to the stripper movable block is attached to the tip of the stripper movable block, and the stripper block is attached to and detached from the stripper support block. It is installed freely.
[0019]
Still further, in a preferred aspect of the present invention, the wedge holding portion is directed toward a rear end of the pusher tooth extending in a fin shape toward the rear and the pusher tooth drilled in the stripper block. The push plate is inserted through an extending hole and has a push plate whose tip abuts against the rear end of the push tooth.
[0020]
According to the coil insertion device of the present invention, first, the stator core is positioned and placed on the core installation base, the slider on which the core installation base is placed is moved, and the stator core is arranged on the base side of the center post. At this time, the center post is inserted into the stator core.
[0021]
Next, a blade holder is attached to the tip of the center post, and a coil is inserted into a predetermined gap of the blade supported by the blade holder and hooked. Further, the stripper block is attached to the stripper movable block provided at the front end portion of the center post or a portion connected thereto, and the front end of the blade is inserted into the blade fitting groove of the stripper block.
[0022]
Note that the stripper block is attached to the portion connected to the stripper movable block, as shown in the preferred embodiment of the present invention, a stripper support block is further attached to the tip of the stripper movable block, and the stripper block is attached to the stripper support block. This means the case of mounting.
[0023]
In this state, the front end of the wedge is connected to the wedge holding portion provided at the rear end of the pushing tooth of the stripper block. Thus, by providing the wedge holding portion at the rear end of the push tooth, the wedge can be attached immediately after the push tooth, and the distance between the stripper portion and the wedge tip portion can be made close to, for example, about 10 mm. it can. Then, the slider is moved to move the stator core placed on the core mounting base in the direction toward the tip of the center post.
[0024]
At this time, the blade is fitted to the inner periphery of the predetermined inner tooth of the stator core, and the coil inserted between the blades is pushed by the pusher teeth of the stripper block protruding between the blades to It is pushed into the groove. At substantially the same time, a wedge connected to the rear end of the pushing tooth of the stripper block is inserted into the groove so as to close the opening of the groove into which the coil is inserted. In this case, in the present invention, as described above, the distance between the stripper portion and the wedge tip portion can be brought close to, for example, about 10 mm, so that the coil can be prevented from being damaged even if the space factor is increased.
[0025]
After the coil is completely inserted into the groove of the stator core in this way, when the stripper movable block is pushed out from the tip of the center post and the stator core is moved further forward, the tip of the blade comes off from the blade fitting groove of the stripper block, The coil end that has been caught on the blade is detached from the blade.
[0026]
When the stripper movable block is retracted to the original position, the stripper block also moves away from the coil end. Thus, the coil insertion can be finished, and the stator core is rotated, and the coil is inserted into all the grooves of the stator core by repeating the operation of inserting the coil into the other grooves of the stator core in the same manner as described above. Can do.
[0027]
In the coil insertion device of the present invention, as described above, the blade and the stripper are fixed to the center post, the coil and the wedge are set on the blade and the stripper, the core is moved, and the coil and the wedge are moved. Since the insertion method is employed, an excellent advantage is obtained that the core installation work and the coil insertion work can be easily performed even with a large stator core.
[0028]
In the preferred embodiment of the present invention, after the coil insertion is completed as described above, the stripper block and the blade holder are removed from the center post, and the slider is retracted to return the stator core to the original position. The forming blade of the coil forming jig attached to the coil is inserted into the groove of the stator core in which the coil is inserted, and it is possible to simultaneously perform forming by pressing the coil to the back of the groove.
[0029]
DETAILED DESCRIPTION OF THE INVENTION
1 to 22 show an embodiment of the coil insertion device of the present invention.
As shown in FIGS. 10 to 12, the coil insertion device 31 includes a center post 34 that protrudes in parallel with the upper surface of the base 32 from a frame 33 that is erected on one side of the base 32. . Further, a slider 36 that is movable in the axial direction of the center post 34 is installed on the upper surface of the base 32 via slide ways 35 disposed on both sides of the base.
[0030]
A pair of ball screws 37 are screwed on both sides of the slider 36 and are rotatably supported on the base 32, and a driven pulley 38 is attached to one end of the ball screw 37. Further, a driving pulley 40 of a motor 39 disposed inside the base 32 and the driven pulley 38 are connected by a timing belt 41. Accordingly, the ball screw 37 is rotated by the motor 39 via the timing belt 41, and the slider 36 moves along the slide way 35.
[0031]
A support shaft 42 is inserted into the center post 34, and the tip of the support shaft 42 projects from the tip of the center post 34 and is connected to the stripper movable block 43. Further, the base end of the support shaft 42 protrudes toward the back side of the frame 33, and the support shaft 42 can protrude in the axial direction by the operation of the air cylinder 45 connected to the base end via a connecting plate 44. ing. As a result, the stripper movable block 43 connected to the tip of the support shaft 42 is movable in the axial direction with respect to the center post 34.
[0032]
Further, an air cylinder 46 is disposed in the stripper movable block 43, and its operating rod projects from the front surface of the stripper movable block 43, and a stripper support block 47 is connected and supported thereto. Accordingly, the stripper support block 47 moves together with the stripper movable block 43 by the axial movement of the support shaft 42, and can protrude further forward with respect to the stripper movable block 43 by the operation of the air cylinder 46. ing.
[0033]
On the lower surfaces of the stripper support block 47, the stripper movable block 43, and the center post 34, a dovetail groove 48 that is continuous in the same shape is formed. It is attached to each of the above-mentioned members via the respective formed being fitted to each other.
[0034]
A core installation base 51 shown in FIGS. 13 and 14 is installed on the slider 36. The core mounting base 51 is composed of a plurality of support plates 52a, 52b, 52c, 52d, and 52e, and each of the support plates 52a, 52b, 52c, 52d, and 52e is a portion bent into an L shape at the lower end thereof. Is fixed to the slider 36 by a bolt (not shown). Arc-shaped cutouts 53a, 53b, 53c, 53d, and 53e that match the outer peripheral shape of the stator core 11 are formed on the upper edge portions of the support plates 52a, 52b, 52c, 52d, and 52e, and these cutouts 53a are formed. , 53b, 53c, 53d, and 53e, a plurality of rollers 54 are attached. The notches 53a and 53e of the support plates 52a and 52e located on both sides have a notch radius that is small and engages the front and rear end surfaces of the stator core 11.
[0035]
The stator core 11 is rotatably mounted with the front and rear end surfaces engaged with the support plates 52a and 52e and the lower surface of the outer periphery supported by the roller 54. In this state, the center of the stator core 11 and the center of the center post 43 substantially coincide with each other so that when the core mounting base 51 and the stator core 11 are moved by the slider 36, the center post 43 is inserted inside the stator core 11. It has become.
[0036]
FIGS. 15 to 19 show a blade holder 55, a blade 56, and a stripper block 57 that are attached to the lower surface of the center post 34 and the stripper support block 47.
[0037]
As shown in FIGS. 15 and 19, the base of the blade 56 is fixed to the blade holder 55 by a bolt 58, extends from the blade holder 55 in a finger shape, and its outer peripheral surface is fitted to the internal teeth of the stator core 11. It has become. An upper portion 59 of the blade holder 55 is formed with a hook 59 that is detachably fitted into a groove 48 of the center post 34. The blade holder 55 is attached to the center post 34 by inserting the dovetail 59 into the dovetail groove 48 of the center post 34.
[0038]
As shown in FIG. 16, the stripper block 57 has a blade fitting groove 60 into which the blade 56 is fitted on the lower surface of the outer periphery. The stripper block 57 projects between the blade fitting grooves 60, and the coil is formed in the groove of the stator core 11. It has the pushing tooth 61 for inserting in. Further, at the upper part, a dove 62 is formed which is detachably fitted into a dovetail groove 48 on the lower surface of the stripper support block 47. The stripper block 57 is attached to the stripper block 57 by inserting the dovetail 62 into the dovetail groove 48 of the stripper block 57.
[0039]
As shown in FIGS. 17 and 18, a hole 63 extending toward the pushing tooth 61 is formed inside the stripper block 57, and a pressing plate 64 is inserted into the hole 63. The rear end 61a of the push tooth 61 extends in a fin shape, and the front end 64a of the push plate 64 has a jagged irregularity so as to come into contact with the rear end 61a. Then, the wedge W can be attached to the rear end 61a of the push tooth 61 by sandwiching the front end of the wedge W between the front end 64a of the push plate 64 and the rear end 61a of the push tooth 61. Yes. Therefore, the rear end 61a of the push tooth 61 and the push plate 64 constitute a wedge holding portion in the present invention.
[0040]
Further, a coil forming jig 71 shown in FIGS. 20 and 21 is attached to the center post 34. The coil forming jig 71 is attached to the dovetail groove 48 of the center post 34 by a taper cone-shaped ring 72 attached to the outer periphery of the base post 34 and fixed to the frame 33 and a dove 73 formed on the upper surface. A member 74 having an arcuate cross section, a plurality of forming blades 75 mounted in the form of fins along the axial direction on the outer periphery of the member 74, and disposed at the tip of the member 74, and also formed on the upper surface It is constituted by a conical member 77 having an arc-shaped cross section that is attached to a dovetail groove 48 of the center post 34 by a dovetail 76.
[0041]
The forming blade 75 is formed radially at a predetermined interval corresponding to the groove into which the coil of the stator core 11 is inserted, and its tip end portion 75a is tapered. When the coil is inserted, the conical member 77 is removed from the center post 34, and the blade holder 55 is attached thereto.
[0042]
Next, the operation of the coil insertion device 31 having the above configuration will be described.
Prior to the coil insertion operation, the coil forming jig 71 shown in FIGS. 20 and 21 is attached to the base of the center post 34. In this case, the tapered cone-shaped ring 72 is fixed to the frame 33 with a bolt, and the member 74 having a circular cross section is attached by inserting the dovetail 73 into the dovetail groove 48. At this point, the conical member 77 is removed.
[0043]
Then, the stator core 11 is installed on a core mounting table 51 provided on the slider 36, positioned at a predetermined angle by positioning means (not shown), and the driving pulley 40, the timing belt 41, and the driven pulley are operated by the operation of the motor 39. The ball screw 37 is rotated via 38 to move the slider 36 to the base side of the center post 34. Thereby, the stator core 11 is disposed on the outer periphery of the base portion of the center post 34.
[0044]
Further, by inserting the blade holder 55 with the blade holder 55 into the groove 48 of the center post 34, the blade holder 55 is attached to the lower surface of the front end portion of the center post 34, and the blade 56 extends forward of the center post 34. And support. In this state, a coil wound in advance by a winding machine (not shown) is inserted into a predetermined gap of the blade 56, and the coil is hooked on the blade 56.
[0045]
Then, the stripper block 57 is inserted into the groove 48 of the stripper support block 47, and the stripper block 57 is attached to the lower surface of the stripper support block 47. At this time, the tip of the blade 56 is inserted and held in the blade fitting groove 60 of the stripper block 57.
[0046]
As a result, as shown in FIG. 1, the coil C is hooked on the blade 56 and is sandwiched between the blade holder 55 and the stripper block 57. In this state, as shown in FIG. 18, the front end of the wedge W is inserted between the rear end 61 a of the pushing tooth 61 of the stripper block 57 and the front end 64 a of the pressing plate 64 inserted into the stripper block 57. The push plate 64 is pushed in to pinch the tip of the wedge W, and the wedge W is attached to the rear end 61 a of the push tooth 61.
[0047]
Then, as shown in FIG. 2, when the slider 36 is moved and the core mounting base 51 and the stator core 11 are moved in the distal direction of the center post 34, the blade 56 is moved to the inner teeth of the stator core 11 as shown in FIG. 22. 12, and the pushing teeth 61 of the stripper block 57 are inserted into the grooves 17 of the stator core 11, so that the coil C held in the gap of the blade 56 is moved by the pushing teeth 61 of the stripper block 57. It is pushed into the groove 17 of the stator core 11 through the gap 56. Immediately after the insertion of the coil C, the wedge W connected to the rear end of the pushing tooth 61 of the stripper block 57 is inserted so as to close the opening of the groove 17 of the stator core 11. Note that I in FIG. 22 is slot insulating paper inserted in advance in the inner periphery of the groove 17 of the stator core 11.
[0048]
As shown in FIG. 3, when the stripper block 57 is positioned on the rear end surface of the stator core 11, the coil C is almost completely inserted into the groove 17 of the stator core 11. At the same time, the wedge W is also inserted into the groove 17 of the stator core 11.
[0049]
Then, the air cylinder 45 in FIG. 10 is operated to push out the support shaft 42, and the stripper movable block 43 and the stripper support block 47 are pushed out as shown in FIG. At the same time, when the stator core 11 is also advanced by that amount, the blade 56 is extracted from the blade fitting groove 60 (see FIG. 22) of the stripper block 57, and the blade 56 is extracted from the end portion (coil end) of the coil C.
[0050]
In this state, when the air cylinder 45 is operated and the stripper movable block 43 and the stripper support block 47 are retracted and returned to their original positions as shown in FIG. 5, the stripper block 57 is also separated from the coil end.
[0051]
Then, the air cylinder 46 in FIG. 11 is operated, and as shown in FIG. 6, the stripper support block 47 is pushed out, the stripper block 57 is pulled out from the blade 56, and the stripper block 57 is pulled out from the groove 48 of the stripper support block 47. Remove. Similarly, the blade holder 55 and the blade 56 are pulled out from the dovetail groove 48 of the center post 34 and removed.
[0052]
Further, the air cylinder 46 is operated to return the stripper support block 47 to its original position as shown in FIG. 7, and the presence 76 of the conical member 77 shown in FIGS. The conical member 77 is attached to the center post 34.
[0053]
Then, as shown in FIG. 8, the stator core 11 into which the coil is inserted is moved in the direction of the base portion of the center post 34 by the movement of the slider 36 together with the core mounting base 51. Then, the forming blade 75 of the coil forming jig 71 is inserted into the groove 17 in which the coil of the stator core 11 is inserted, and the coil C is pressed against the back of the groove 17 through the wedge W of FIG.
[0054]
Thus, as shown in FIG. 9, when the stator core 11 moves to the base of the center post 34, the compression of the coil C is completed by the forming blade 75, and the coil C is pushed into the depth of the groove 17. The next coil can be inserted into the space. The forming blade 75 is attached to a selected position of the member 74 in FIG. 20 so as to be inserted into the groove 17 into which the coil is first inserted among the grooves 17 of the stator core 11. In other words, it is necessary not to provide the forming blade 75 in the groove into which the coil is inserted for the second time.
[0055]
By repeating the above operation, the coil C can be inserted into all the grooves 17 of the stator core 11, and the coil C first inserted into the groove 17 is pushed into the groove by the forming blade 75, and the same It is also easy to insert the coil C into the groove 17 in two stages, thereby making it possible to mechanically insert a wrap winding type coil.
[0056]
Further, in the coil insertion device of the present invention, as shown in FIG. 22, the pushing teeth 61 of the stripper block 57 enter the grooves 17 of the stator core 11 and insert the coils C, so that the insertion density of the coils C is increased, so-called space The performance of the motor incorporating the stator core 11 can be improved by increasing the factor.
[0057]
When the space factor is obtained by the following equation 1, according to the coil insertion device of the present invention, the space factor could be 80% or more, but in the conventional coil insertion device shown in FIG. Up to about 70% was the limit.
[0058]
[Expression 1]
Space factor = {(Maximum outer diameter of wire diameter ² X number of wires) / groove effective area} × 100
[0059]
【The invention's effect】
As described above, according to the coil insertion device of the present invention, a coil can be inserted into a large stator core with good workability and a high space factor. In addition, since the coil insertion jig is inserted by moving the stator core on the core mounting base while the coil insertion jig is supported by the center post, even a large stator core can be connected to the coil insertion device. Easy to set. Further, since the wedge holding portion is provided at the rear end of the pushing tooth of the stripper block and the wedge is connected immediately after the pushing tooth, the damage to the coil can be prevented even if the space factor is increased.
[0060]
Further, according to a preferred aspect of the present invention, the coil forming jig is attached to the center post, the stator core is moved in the tip direction of the center post, the coil is inserted, and the coil is then returned to the original position. Since the coil inserted by the forming blade of the forming jig is compression-molded, it is possible to perform mechanically up to coil forming with good workability.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram showing a state in which a coil is mounted on a coil insertion device according to an embodiment of the present invention and coil insertion is started.
FIG. 2 is an explanatory view showing a state in the middle of inserting a coil by moving the stator core forward by the coil insertion device;
FIG. 3 is an explanatory view showing a state where a coil is inserted by the coil insertion device.
FIG. 4 is an explanatory view showing a state in which the blade is pulled out from the coil end after the coil is inserted by the coil insertion device;
FIG. 5 is an explanatory view showing a state where the stripper block is further separated from the coil end after the operation of FIG. 4;
6 is an explanatory view showing a state in which the blade holder, the blade and the stripper block are removed from the center post after the operation of FIG. 5;
7 is an explanatory view showing a state in which a conical member of a coil forming jig is attached to the center post after the operation of FIG. 6;
FIG. 8 is an explanatory view showing a state in which a stator core is moved rearward and a coil is compression-molded by a coil-forming jig.
FIG. 9 is an explanatory view showing a state in which the compression molding of the coil is completed.
FIG. 10 is a plan view of a coil insertion device according to an embodiment of the present invention.
FIG. 11 is a front view of the coil insertion device.
FIG. 12 is a side view of the coil insertion device.
FIG. 13 is a side view of a core mounting base provided in the coil insertion device.
FIG. 14 is a front view of the core installation table.
FIG. 15 is a perspective view showing a state in which a blade holder, a blade, and a stripper block provided in the coil insertion device are assembled.
FIG. 16 is a perspective view of a stripper block provided for inserting the coil.
FIG. 17 is a plan view of the stripper block.
18 is a cross-sectional view taken along line AA ′ of FIG.
FIG. 19 is a partially cutaway front sectional view showing a state in which the blade holder, the blade and the stripper block are assembled.
FIG. 20 is a perspective view showing a coil forming jig provided in the coil insertion device.
FIG. 21 is a front view of the coil forming jig.
FIG. 22 is a partial cross-sectional view showing a state where the coil is inserted into the groove of the stator core by the coil insertion device.
FIG. 23 is a partial cross-sectional view showing a state where a coil is inserted into a groove of a stator core by a conventional coil insertion device.
FIG. 24 is an explanatory view showing a conventional method for compression-molding a coil inserted into a groove of a stator core.
[Explanation of symbols]
11 Stator core
12 internal teeth
17 Groove
31 Coil insertion device
32 base
33 frames
34 Center post
36 slider
43 Stripper movable block
47 Stripper support block
51 Core installation stand
55 Blade holder
56 blades
57 Stripper block
60 Blade fitting groove
61 Pushing teeth
61a Rear end of push tooth
64a Tip of pressing plate
71 Coil forming jig
75 Molding blade

Claims (4)

A center post (34) projecting in parallel with the upper surface of the base (32) from a frame (33) erected on one side of the base (32);
The stator core is installed on a slider (36) disposed on the upper surface of the base (32) so as to be movable in the axial direction of the center post (34), and the center post (34) is placed in the center of the stator core (11). A core mounting base (51) for supporting (11);
Holding the base of a plurality of blades (56) fitted to the selected internal teeth (12) of the stator core (11), removably attached to the peripheral wall of the tip of the center post (34), A blade holder (55) for supporting the blade (56) in parallel with the center post (34);
A stripper movable block (43) attached to the tip of the center post (34) and movable in the axial direction of the center post (34);
A blade fitting groove (60), which is detachably attached to the stripper movable block (43) or a portion connected to the stripper movable block (43), and the blade (56) is fitted to a part of the outer periphery, and the blade fitting groove (60 ) And a wedge (61) for pushing the coil (C) into the groove (17) of the stator core (11), and a wedge holding portion ( 61a, 64a) and a stripper block (57) having a coil insertion device for a stator core. A coil forming jig (71) is attached to the base side of the center post (34), and the coil forming jig (71) is inserted into the groove (17) of the stator core (11). The apparatus for inserting a coil into a stator core according to claim 1, wherein the portion has a forming blade (75) having a tapered shape. A stripper support block (47) that can further protrude in the axial direction with respect to the stripper movable block (43) is attached to the tip of the stripper movable block (43), and the stripper block (47) is attached to the stripper block (47). The apparatus for inserting a coil into a stator core according to claim 1 or 2, wherein (57) is detachably attached. The wedge holding portion faces the rear end (61a) of the push tooth (61) extended in a fin shape toward the rear and the push tooth (61) drilled in the stripper block (57). 4. A push plate (64), which is inserted through a hole (63) extending in a straight line and has a front end (64a) in contact with a rear end (61a) of the push tooth (61). The coil insertion apparatus to the stator core as described in one.

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