JPH047666Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention is an apparatus for inserting groove insulating paper into the iron core groove of a rotating electric machine, and in particular, a groove into the iron core groove of a rotating electric machine, in which a hoop material of insulating paper is cut and formed and then inserted into the iron core groove of a rotating electric machine. This invention relates to an improvement of an insulating paper insertion device.

As shown in FIG. 1, this type of device is used for inserting a groove insulating paper 14 into a core groove 12 around which an excitation coil formed on a fixed core 10 of a rotating electrical machine is wound. The ones shown in FIGS. 2 to 5 have been proposed. That is, in the figure, reference numeral 16 indicates a hoop material 18 of insulating paper placed in the core groove 1.
A feeding roller 20 sends out a predetermined length in a direction perpendicular to the groove direction of 2, and 20 is a cutting cutter.
and a lower cutter portion 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 a predetermined radius.
An arcuate bottom surface 28a having R ₁ , a receiving surface 28b for receiving the side edge of the insulating paper connected to the upper part, a rising stop surface 28c for locking the upper end of the insulating paper connected to the upper part, Aperture surface 28d
and a guide groove 28e for guiding an extrusion rod of an extruder, which will be described later, between the bottom surface 28a and the receiving surface 28b.
is formed and the insulating paper is bent and held in a U-shape.

30, the lower end of which the hoop material 18 cut to a predetermined length is inserted into the insulating paper insertion recess 28 of the mold 26 is an arcuate surface with a radius _R2 smaller than the radius R1 of the bottom surface 28a by the thickness of the hoop material ₁₈ . formed punch,
32 is a drawing die connected to the forming die 26, and as shown in _FIG. From the width, match the core groove 12 of the fixed core 10 with X ₂
Narrow it inward so that the width is .

Reference numeral 34 denotes a pressing mechanism, which has an extrusion rod part 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 40 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. By inserting the mandrel 41 fixed to the fixed core 10 into the fixed core 10,
, and position the core groove 12 and the groove insulating paper guide groove 39 using the key 42. Then, the indexing jig 38 is rotated by a predetermined angle by the indexing gear 43, and 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 iron core groove by a length l of the desired insulating paper, and its center portion is passed through the drawing surface 28d of the insulating paper insertion recess 28 of the mold 26. Position it so that it is in the center of the side opening. 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 cut hoop material 18 is
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 groove insulating paper 14 opens outward due to springback when it disengages from the aperture surface 28d, so that its upper end faces or engages with the 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 insulation guide groove 39 of the indexing jig 38 .

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

However, since the conventional device for inserting groove insulating paper into the core groove of a rotating electric machine is configured as described above, the shape of the core groove 12 is changed as shown in FIG.
If the groove shoulder widths L _A , L _B , L _C , groove depths H _A , H _B , H _C , and bottom curvature radii R _A , R _B , R _C change, cutters, punches, The drawback is that all component parts such as molds and indexing jigs must be manufactured and replaced each time.Especially in the case of models with a small production volume, it is costly to manufacture each component part. This method had the disadvantage that the groove insulating paper had to be inserted manually because it was not effective.

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

In order to achieve the above object, the present invention provides an upper and lower part with adjustable cutting positions for cutting a hoop material fed by a feed roller to a predetermined length in a direction perpendicular to the groove direction of the core groove of a rotating electric machine iron core. A cutter section consisting of a cutter, an R punch with a tip R arc surface that pushes the cut grooved insulating paper into the molding section, and a positioning device that receives and positions the tip R section of the grooved insulating paper that is pushed into the molding section by the R punch. The forming mold includes a molding bottom, a drawing side, a padding side for maintaining the molded state, and a mold each having a plurality of rising stop surfaces for mooring both ends of the grooved insulating paper following the padding side, and this molding. A drawing die which is provided in a position adjustable manner at the front part of the mold, receives the formed grooved insulating paper from a drawing guide, and narrows it into a shape corresponding to the core groove shape, and a drawing die is formed between the forming bottom and the padding side of the forming die. Using the guide groove as a guide,
It is equipped with an extrusion rod that repeatedly moves backward, extrudes the grooved insulating paper formed in the mold from the molding part, squeezes it through the drawing die, and inserts it into the core groove.

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

FIG. 7 to FIG. 10 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 supports 48 which are superimposed at intervals such that the hoop material 18 of insulating paper can be inserted into the lower cutter portion 46. When engaged, the upper cutter portion 45 normally takes a position separated upward from the lower cutter portion 46 by a return spring 52 disposed around the column 48, and is lowered from this state by a presser metal 54. By doing so, the hoop material 18 fed in a direction perpendicular to the groove direction of the core groove 12 is cut in cooperation with the lower cutter part 46. The cutting cutter 42 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 between the cutting cutter 42 and a 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. There is. The insulating paper insertion recess 60 of the mold 62 has a flat bottom part 62a that receives the curved part of the insulating paper, and a receiving surface 6 that receives the open end side part of the insulating paper connected to the upper part of the flat bottom part 62a.
2b, a plurality of rising stop surfaces 62c connected to the upper part and extending inward and having different heights from the bottom surface 62a, and an aperture surface 62d connected to the upper part, which is connected to the bottom surface 62a and receives the stop surface 62c. A guide groove 62e for guiding the extrusion rod portion 36 of the pressing mechanism 34 is formed between the surface 62b and the extrusion rod portion 36 of the pressing mechanism 34.

64 is a drawing die, as shown in FIG.
It is attached to the fixed core 10 side of the mold 62 with bolts 66 so that it can be adjusted vertically within the range of the elongated hole 64c for position adjustment, and the open end side of the groove insulating paper 14 formed in a U-shape is gradually moved. It has a tapered guide surface 64a that narrows inward, and a V-shaped aperture holding surface 64b connected to the tip thereof.

In addition, the feed roller, pressing mechanism, and indexing jig are as follows:
As shown in FIGS. 7 and 8, the structure is exactly the same as that in FIGS. 2 and 3, so 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,
The feed amount of the feed roller 16 that feeds the hoop material 18 in a direction perpendicular to the direction of the core groove 12 is selected, and the distance between the cutting cutter 44 and the forming mechanism 56 is determined so that the center position when the hoop material 18 is cut is selected. It is set at the center of the opening on the aperture surface 62d side of the insulating paper insertion recess 60 of the mold 62.
Further, the height position of the drawing die 64 with respect to the forming die 62 is adjusted according to the shape of the core groove 12.

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 on the upper surface of the symmetrical 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 62d and the tip of the punch 58, and when the curved bottom reaches the bottom surface 62a, the open end side edge meets the aperture surface 62.
d, and expands outward due to springback to engage the receiving surface 62b, and its upper end surface is closely opposed to or opposed to the rising stop portion 62c. Thereafter, the punch 58 is raised and extracted from 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 stopper portion 62c, so that upward movement is regulated and the grooved insulating paper 14 is securely held within the insulating paper insertion recess 60.

At the same time that the punch 58 is extracted from the insulating paper insertion recess 60, the pressing mechanism 34 is activated, the extrusion rod part 36 is guided by the guide groove 62e and moves forward, and the grooved insulating paper 14 is pushed out toward the drawing die 64 side. The open end is gradually squeezed inward by the tapered guiding surface 64a of this drawing die 64, and then shaped into a state that can be stably inserted into the core groove 12 of the fixed core 10 by the squeezing suppressing surface 64b. Ru. At this time, the curved bottom surface of the groove insulating paper 14 moves the mold 62 into the bottom surface 62a.
, and its inner radius is smaller than the radius formed by the punch 58 due to the aperture effect,
The indexing jig 38 is easily inserted into the core groove 12 of the fixed core 10 through the insulating paper guide groove 39 .

When the extrusion rod part 36 of the pressing mechanism 34 advances to the tip of the drawing die 64, 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 extrusion pressure rod portion 36 is moved backward, 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 out a predetermined amount of the hoop material 18 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, when the core groove 12 of the fixed core 10 is changed as shown in FIG. 6, the total length of the groove insulating paper 14 changes, so the feed amount of the feed roller 16 and the cutting cutter 42 change accordingly. At the same time as changing the position, loosen the bolt 66 shown in FIG.
By adjusting the height of the drawing die 64 to a corresponding predetermined position along line 4c and making appropriate changes as shown in FIG. 10, it is possible to easily change the shape of the core groove 12 without replacing the entire configuration. (However, the insulating paper guide groove 39 of the indexing jig 38 needs to be changed).

In addition, in the above embodiment, the case where the depth and shoulder width of the core groove 12 are changed has been explained, but when the inner diameter of the fixed core is changed, the number of core grooves can be changed by changing the diameter of the mandrel 41. In the case of a change, each can be adequately dealt with by changing the number of indexes of the indexing jig 38.

Furthermore, the present invention can be applied not only to the case where the groove insulating paper 14 is inserted into the core groove 12 of the fixed core 10, but also to the case where the groove insulating paper is inserted into the armature core groove which becomes the rotor. Not even.

As described above, according to the present invention, the distance between the cutting cutter and the forming mechanism can be adjusted, and the mold of the forming mechanism is provided with a stopper section of grooved insulating paper having multiple stages of different heights from the bottom surface. The insulating paper can be formed according to the shape of the core groove, and the position of the drawing die attached to the mold can be adjusted, so even if the shape of the core groove changes, the component parts can be adjusted. Since it is not necessary to replace the entire device, the entire device can be manufactured at a low cost, and setup changes can be easily performed.

[Brief explanation of drawings]

Fig. 1 is a front view showing the fixed iron core, Fig. 2 is a sectional view showing the conventional device, Fig. 3 is a front view showing the feeding, cutting, and forming parts, Fig. 4 is a front view showing the drawing die, and Fig. 4 is a front view showing the drawing die. Figure 5 is a front view with the lower half of the fixed core removed as seen from the arrow A side in Figure 4, Figures 6A, B,
C is a diagram showing the core groove shape of the fixed core, FIG. 7 is a sectional view showing an embodiment of the present invention, FIG. 8 is a front view showing the feeding, cutting, and forming parts, and FIGS. 9A, B, and C is a front view, a plan view, and a cross-sectional view showing the relationship between the forming die and the drawing die, and FIGS. It is a figure which shows adjustment. In the figure, 10 is a fixed core, 12 is a core groove,
14 is a grooved insulating paper, 16 is a feed 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, 60 is a molding part (insertion recess for the grooved insulating paper), 62 is a mold, 62
62b is a receiving surface, 62c is a stop surface, 62d is a drawing surface, 62e is a guide groove, 64 is a drawing die, and 64a is a drawing 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. a cutter section consisting of upper and lower cutters with adjustable cutting positions for cutting the hoop material sent out in predetermined lengths, and an R punch with an R-shaped tip for pushing the cut grooved insulating paper into the forming section; This R on the molding part
A forming bottom part that receives and positions the tip R of the grooved insulating paper pushed in by the punch, a drawing side surface, a holding side surface that maintains the formed state, and a plurality of stages where both ends of the grooved insulating paper are moored following this holding side surface. A drawing die is provided in the front part of the forming die, the position of which is adjustable, and which receives the formed grooved insulating paper through a drawing guide and narrows it down to fit the shape of the core groove. , repeating forward and backward movements using a guide groove formed between the molding bottom and the contact side of the mold as a guide, extruding the grooved insulating paper formed in the mold from the molding part and squeezing it through the drawing die; A device for inserting groove insulating paper into a rotating electric machine core groove, which includes an extrusion rod inserted into the core groove.