JPH047665Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention is a device for inserting groove insulating paper into the iron core groove of a rotating electrical machine, in particular, a device for inserting groove insulating paper into the iron core groove of a rotating electrical machine, which cuts and shapes an insulating paper hoop material and then inserts it into the iron core groove of a rotating electrical machine. This invention relates to an improvement of a paper insertion device.

In this type of device, as shown in FIG. 1, a groove insulating paper 1 shown in FIG.
It is used when inserting a grooved insulating paper 14 such as the cuffed grooved insulating paper 14b shown in FIG. 4a or FIG. 3, and the ones shown in FIGS. That is, in the figure, 16 is a feed roller that feeds the insulating paper hoop material 18 by a predetermined length in a direction perpendicular to the groove direction of the core groove 12, and 20 is a cutting cutter.
It is composed of an upper cutter part 22 that moves up and down and a lower cutter part 24 fixed to a mold 26 which will be described later. 26 is a mold, and an insulating paper insertion recess 28 is formed from the upper surface side. This insulating paper insertion recess 28 has an arc-shaped bottom surface 28a having a predetermined radius _R1 , a receiving surface 28b that receives the side edge of the insulating paper connected to the upper part, and a receiving surface 28b that locks the upper end of the insulating paper connected to the upper part. The bottom surface 28
An extrusion mechanism 34, which will be described later, is located between a and the receiving surface 28b.
A guide groove 28e is formed to guide the pressing rod part 36, and the insulating paper is bent and held in a U-shape.

Reference numeral 30 denotes an arcuate surface having a radius R 2 smaller than the radius R ₁ of the bottom surface 28 a by the thickness of the hoop material 18 at the lower end into which the insulating paper 18 cut to a predetermined length is inserted into the insulating paper insertion recess 28 of the mold ₂₆ . punch formed in,
32 is a drawing die connected to the forming die 26, and as shown in FIG. 6, fixes the _width of the open end side Narrow it inward to match the core groove 12 of the core 10 and have a width of _X2 .

Reference numeral 34 denotes a pressing mechanism, which has a pressing rod portion 36 that can move forward and backward in the horizontal direction.
4 is inserted through the drawing die 32 into a groove insulating paper guide groove 39 of an indexing jig 38, which will be described later.

Reference numeral 38 denotes an indexing jig, which has an indexing plate 40 in which grooved insulating paper guide grooves 39 corresponding to the core grooves 12 of the fixed iron core 10 are formed as shown in FIG. The fixed mandrel 41 is attached to the fixed iron core 10
The fixed core 10 is held by inserting it inside the core groove 12 and the groove insulating paper guide groove 39 are positioned using the key 42. And indexing jig 3
8 is rotated by a predetermined angle by an index gear 43,
Indexing is performed so that the groove insulating paper guide groove 39 and the drawing die 32 communicate with each other.

Next, the operation will be explained. First, hoop material 1
8 is fed by the feed roller 16 in a direction perpendicular to the groove direction of the core groove 12 by a length l of the target groove insulating paper 14, and its center portion is inserted into the insulating paper insertion recess 28 of the mold 26. It is positioned at the center of the aperture on the aperture surface 28d side. Thereafter, the upper cutter part 22 of the cutting cutter 20 is lowered and cooperates with the lower cutter part 24 to cut the hoop material 18. At the same time, the punch 30 is lowered and the hoop material 18
is pressed and inserted into the insulating paper insertion recess 28 through the drawing surface 28d of the mold 26, and the arcuate bottom surface 28a
A U-shaped grooved insulating paper 14 is formed opposite to.

At this time, the open end of the grooved insulating paper 14 opens outward due to spring back when it disengages from the aperture surface 28d, so that its upper end faces or engages with the rising stop surface 28c. becomes. Therefore, when the punch 30 is raised next time, upward movement of the grooved insulating paper 14 is restricted, and the grooved insulating paper 14 is reliably held in the insulating paper insertion recess 28.

Next, the pressing mechanism 34 is activated, and its pressing rod portion 3
6 moves forward in the guide groove 28e of the mold 26, the groove insulating paper 14 is pressed against the drawing die 32, and the drawing die 32 causes the gap on the open end side to be reduced as shown in FIG. Then, it is narrowed from X ₁ to X ₂ and further advanced to be inserted into the core groove 12 through the groove insulating paper guide groove 39 of the indexing jig 38 .

Next, the pressing mechanism 34 is operated in the opposite direction, the pressing rod part 36 is retreated, and at the same time the indexing gear 43 is driven to rotate the indexing jig 38 and the fixed iron core 10 by one groove, and at the same time, the hoop The material 18 is sent out a predetermined length in a direction perpendicular to the groove direction of the core groove 12 by the feed roller 16, and the above steps are repeated.

Since the conventional device for inserting groove insulating paper into the core groove of a rotating electrical machine is configured as described above, the bottom shape of the core groove 12 is changed to a rectangular shape, and the groove insulating paper 14 is inserted into the eighth groove.
If the shape of the core groove 12 is changed to a U-shape with a square bottom as shown in the figure, or if the depth H _A of the core groove 12 or the shoulder width H _B of the groove in Figure 1 is changed, the cutting cutter,
It has the disadvantage that all component parts such as punches, molds, indexing jigs, etc. must be manufactured and replaced each time.Especially in the case of models that are produced in small numbers, each component part must be manufactured and replaced. However, this method had the disadvantage that the groove insulating paper had to be inserted manually because the investment was not effective.

The present invention was devised in view of the above-mentioned conventional problems, and its purpose is to provide groove insulation for rotating electric machine core grooves that can easily handle the preparation work for various shape changes of rotating electric machine core grooves. An object of the present invention is to provide a paper insertion device.

In order to achieve the above object, the present invention provides a cutter consisting of upper and lower cutters with adjustable cutting positions for cutting a hoop material fed out in predetermined lengths by a feed roller in a direction perpendicular to the direction of the core groove. a punch that pushes the cut grooved insulating paper into the molding section, a molding bottom that receives and positions the tip of the grooved insulating paper that is pushed into the molding section by the punch, a drawing side surface, and a stopper that maintains the molded state. The side surface has a rising stop surface for mooring both ends of the grooved insulating paper following this contact side surface, and this molded part is divided by a plane horizontal to the molding depth direction, and the space between the divided divided members is A mold is formed by combining a mold with an adjusting means that can be adjusted in the molding depth direction, and the mold is provided at the front part of the mold so that its position can be adjusted, and the molded groove insulating paper is received from the aperture guide to correspond to the shape of the core groove. The drawing die is used to draw the paper into a shape, and the guide groove formed between the forming bottom and the contact side of the forming die is used as a guide to repeatedly move forward and backward, and the grooved insulating paper formed in the forming die is pushed out of the forming part. It is equipped with an extrusion rod that is drawn through a drawing die and inserted into the core groove.

Hereinafter, preferred embodiments of the present invention will be described based on the drawings.

FIGS. 9 to 11 are diagrams showing an embodiment of the present invention.

In the figure, reference numeral 44 denotes a cutting cutter for cutting the hoop material 18 fed out by the feed roller 16 in a direction perpendicular to the groove direction of the core groove 12, and as shown in FIG. 46, and the upper cutter portion 45 is vertically slidable via a sliding bearing 50 on a plurality of columns 48 vertically installed at intervals that allow the hoop material 18 of insulating paper to be inserted into the lower cutter portion 46. When engaged, the upper cutter part 45 normally takes a position separated upward from the lower cutter part 46 by a return spring 52 disposed around the support column 48, and is lowered from this state by a presser metal 54. As a result, the hoop material 18 is fed in a direction perpendicular to the groove direction of the core groove 12 in cooperation with the lower cutter part 46 to cut the hoop material 18. The cutting cutter 44 is disposed so as to be movable in the insertion direction of the hoop material 18, and is configured to be able to appropriately change the distance from the forming mechanism 56, which will be described later.

Reference numeral 56 denotes a molding mechanism, which is composed of a punch 58 whose lower end is formed into a semicircular shape, and a mold 62 having an insulating paper insertion recess 60 into which the punch 58 is inserted together with the cut hoop material 18. The mold 62 has a drawing surface 62a forming a part of the insulating paper insertion recess 60, a stop surface 62b connected to the lower end thereof and extending outward, and a stop surface 62b connected to the outer end thereof and extending inwardly downward. an upper half body 64 formed with a receiving surface 62c for receiving the open end side of the grooved insulating paper 14;
, a flat bottom surface 62d constituting the other part of the insulating paper insertion recess 60, and a lower half body 66 in which a guide groove 62e for guiding the pressing rod part 36 of the pressing mechanism 34 is formed. It is attached to the lower half body 66 so as to be movable up and down along a guide pin 68, and has a distance H ₁ between the bottom surface 62d and the upper and stop surface 62b.
It is possible to adjust.

70 is a drawing die, and as shown in FIG. 11, it can be adjusted up and down within the range of a long hole 72c for position adjustment by a bolt 72 on the fixed iron core 10 side of the upper half 64 of the forming die 62. It has a tapered guide surface 72a that gradually narrows the open end side of the groove insulating paper 14 formed in a U-shape to the inside, and a V-shaped aperture pressing surface 72b that is connected to the tip of the guide surface 72a.

In addition, the feed roller, pressing mechanism, and indexing jig are as follows:
As shown in FIGS. 9 and 10, since the structure is exactly the same as that in FIGS. 4 and 5, corresponding parts are denoted by the same reference numerals, and detailed explanation thereof will be omitted.

The above is an example of the configuration of the present invention, and the operation will be explained next.

First, depending on the shape of the core groove 12 of the fixed core 10, the hoop material 18 of the feed roller 16 feeds the hoop material 18 in a direction perpendicular to the groove direction of the core groove 12.
In addition to selecting the feed amount, the distance between the cutting cutter 44 and the forming mechanism 56 is adjusted so that when the hoop material 18 is cut, its center position is the center position of the opening on the aperture surface 62a side of the insulating paper insertion recess 60 of the forming mold 62. Set to . In addition, the upper half 64 of the mold 62
and the lower half body ₆₆ , and when the cut hoop material 18 is inserted into the insulating paper insertion recess 60 and bent into a U shape, the upper end surface of the open side is on the upward stop surface 62b. The distance H ₁ between the up stop surface 62b and the bottom surface 62d is selected so that they closely face each other or are in contact with each other.

In this state, the hoop material 18 is
is sent out for a predetermined length in a direction perpendicular to the groove direction of the core groove 12, and then the presser metal 5 of the cutting cutter 44
4, the upper cutter section 45 is lowered against the return spring 52, and cooperates with the lower cutter section 46 to cut the hoop material 18. At this time, the hoop material 18 is placed symmetrically on the upper surface of the mold 62 with the punch 58 in between.

Next, the punch 58 is lowered to insert the cut hoop material 18 into the insulating paper insertion recess 60 of the mold 62.
Insert inside. At this time, the cut hoop material 1
8 is first gradually bent into a U-shape by the aperture surface 62a and the tip of the punch 58, and when the curved bottom reaches the bottom surface 62d, the open end side edge is bent by the aperture surface 62a.
After disengaging from the engagement with the punch 58 and expanding outward due to spring back to engage the receiving surface 62b, and with its upper end surface closely facing or facing the rising stop surface 62b, the punch 58 is raised, The insulating paper is extracted from the inside of the insulating paper insertion recess 60. At this time, the upper end of the open side of the grooved insulating paper 14 bent into a U-shape comes into contact with the upward stop surface 62b, so that upward movement is regulated and the insulating paper 14 is securely held in the insulating paper insertion recess 60.

At the same time as the punch 58 is pulled out from the insulating paper insertion recess 60, the pressing mechanism 34 is activated, the pressing rod 36 moves forward, the grooved insulating paper 14 is pushed out toward the drawing die 70, and the tapered shape of the drawing die 70 is pushed out. The open end is gradually squeezed inward by the guide surface 72a, and then shaped into a state that can be stably inserted into the core groove 12 of the fixed core 10 by the squeeze surface 72b. The bottom is mold 6
2, its inner radius is smaller than the radius formed by the punch 58 due to the squeezing effect, and the groove insulating paper guide groove 3 of the indexing jig 38
9 into the core groove 12 of the fixed core 10.

When the pressing rod part 36 of the pressing mechanism 34 advances to the tip of the drawing die 70, the rear part of the grooved insulating paper 14 is completely inserted into the grooved insulating paper guide groove 39 of the indexing jig 38, and then the pressing mechanism 34 is operated in the opposite direction, the pressing rod portion 36 is retracted, and the indexing jig 38 is rotated by one groove by the indexing gear 43. Note that the upper cutter portion 45 of the cutting cutter 44 is released from the pressure by the presser metal 54 at an appropriate time after the punch 58 is lowered, and is returned to its original position by the force of the return spring 52.

Then, the feed roller 16 again feeds the hoop material 18 by a predetermined amount in a direction perpendicular to the groove direction of the core groove 12, and the above process is repeated. In this case, the feed roller 16 may be activated when the upper cutter portion 45 and punch 58 are raised.

Furthermore, if there is a change in the depth H _A of the core groove 12 of the fixed core 10, the total length of the groove insulating paper 14 will change, so the amount of feed of the feed roller 16, the position of the cutting cutter 42, and the shape of the cutter 42 will change accordingly. The distance between the upper half 64 and the lower half 66 of the mold 62 was changed, the shape of the insulating paper guide groove 39 of the indexing jig 38 was changed, and the insulation between the insulating paper guide groove 39 and the mold 62 was changed. If a misalignment occurs between the core groove 12 and the paper insertion recess 60, it is possible to easily change the depth of the core groove 12 without replacing the entire configuration by moving the two relatively and aligning them. can.

Furthermore, if only the shoulder width H _B of the core groove 12 is changed, the drawing press surface 72 of the drawing die 70 should be changed in advance.
By narrowing the width of b, the groove insulating paper 14 expands due to spring back when inserted into the core groove 12.

In addition, in the above embodiment, the depth H _A of the core groove 12
We have explained the case where the shoulder width H _B changes.
If the inner diameter of the fixed core changes, this can be adequately addressed by changing the diameter of the mandrel 41, and if the number of core grooves changes, this can be adequately addressed by changing the number of indexes of the indexing jig 38. .

Further, when the bottom of the core groove 12 is formed into an inverted trapezoidal corner, the bottom surface 62d of the mold 62 is a flat surface, so that only the punch 58 is inserted with its tip as shown in FIG. The insulating paper 14 having an inverted V-shaped groove can be formed by simply changing the shape to a square one.

Further, the indexing jig 38 is not limited to the configuration of the above example, and as shown in FIG.
A groove insulating paper guide groove 74 is formed on the outer periphery of 0, and its central axis 76 is pivotally connected to a sliding piece 78 that can slide up and down, and is also screwed to an index gear 80.
8, the bottom surface of the core groove 12 and the mold 62
By appropriately matching the bottom surface 62d of the indexing jig 38, groove insulating papers of various shapes can be inserted into the core groove 12 without replacing the indexing jig 38.

In addition, a groove insulating paper 1 is placed in the core groove 12 of the fixed core 10.
Of course, the present invention can be applied not only to the case of inserting the groove insulation paper into the core groove of the armature core which becomes the rotor.

As described above, according to the present invention, the distance between the cutting cutter and the forming mechanism can be adjusted, the forming die of the forming mechanism is configured so that the insertion depth of the groove insulating paper can be changed, and the drawing die Since only the open end of the groove insulating paper is squeezed, the groove insulating paper can be formed according to the shape of the core groove, and even if the shape of the core groove changes, all the components can be replaced each time. Since there is no need to do this, the entire device can be manufactured at a low cost, and setup changes can be easily performed.

[Brief explanation of the drawing]

Fig. 1 is a front view showing the fixed core, Fig. 2 is a perspective view showing grooved insulating paper, Fig. 3 is a perspective view showing grooved insulating paper with cuffs, Fig. 4 is a sectional view showing the conventional device, and Fig. 5 is a perspective view showing the grooved insulating paper. The figure is a front view showing the feeding, cutting, and forming parts, Figure 6 is a front view showing the drawing die, and Figure 7 is a view with the lower half of the fixed core removed as seen from the arrow A side in Figure 4. A front view, FIG. 8 is a front view showing another example of FIG. 5,
FIG. 9 is a sectional view showing one embodiment of the present invention;
The figure is a front view showing the feeding, cutting, and forming parts.
1A, B, and C are front views, plan views, and sectional views showing the relationship between the forming die and the drawing die, FIG. 12 is a front view of the forming mechanism showing another embodiment of the present invention, and FIG. 13 is a front view of the forming mechanism showing another embodiment of the present invention. FIG. 9 is a sectional view similar to FIG. 9 showing still another embodiment of the present invention. In the figure, 10 is a fixed core, 12 is a core groove,
14 is a grooved insulating paper, 16 is a feeding roller, 18 is a hoop material, 36 is an extrusion rod, 44 is a cutter, 45 is an upper cutter part, 46 is a lower cutter part, 58 is a punch, 60 is a forming part (of the grooved insulating paper) insertion recess), 62
is a mold, 62a is a drawing surface, 62b is a stop surface, 62c is a receiving surface, 62d is a bottom surface, 62e is a guide groove, 64 and 66 are divided members (upper half body, lower half body),
68 is an adjustment means (guide pin), 70 is a drawing die,
72a indicates an aperture guide (a tapered guide surface). Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims (1)

[Scope of utility model registration request] This is a groove insulating paper forming and inserting device for forming and inserting groove insulating paper cut from hoop material into the core groove of a rotating electric machine iron core. The cutter part consists of an upper and lower cutter with adjustable cutting positions to cut the hoop material sent out in predetermined lengths, a punch to push the cut grooved insulating paper into the forming part, and a cutter part to cut the hoop material sent out in predetermined lengths. It has a molded bottom part that receives and positions the leading end of the grooved insulating paper, a drawing side surface, a holding side surface that maintains the molded state, and a stop surface for mooring both ends of the grooved insulating paper following this holding side, A mold is formed by dividing this molding part in a plane horizontal to the molding depth direction, and connecting the divided divided members with adjustment means that can be adjusted in the molding depth direction, and a mold in which the front part of the mold is A drawing die that is provided so that its position can be adjusted and that receives the formed grooved insulating paper from the drawing guide and narrows it down to correspond to the shape of the core groove, and guides the guide groove formed between the forming bottom and the contact side of the forming die. A rotary electric machine iron core groove, characterized in that it is equipped with an extrusion rod that repeats forward and backward motions, extrudes the groove insulating paper formed in the mold from the molding part, squeezes it through the drawing die, and inserts it into the core groove. Groove insulation paper insertion device.