JPS5959049A - Inserting method and apparatus for interphase insulating element for motor coil - Google Patents

Abstract

PURPOSE:To enable to automate the coil inserting work of a motor by inserting an interphase insulating element to stator coils of a motor as the coil inserting work of the motor. CONSTITUTION:An interphase insulating element automatic insertion machine has an insulating element inserting position B formed of a core transport conveyor 12 and an insulating element preparing and shaping position A disposed above the position B, and a center post and a sleeve holder 13 of the preparing and shaping mechanism can be reciprocated therebetween. Monofilament is matched and inserted to the slot inlet by reciprocating the center post and the holder 13.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of inserting a phaseless Pf4: element for morph winding and an apparatus for automatically carrying out the method.

Insulation of the stator winding of a motor includes slot insulation applied between the slot and the winding inserted into it, and phase-to-phase insulation applied between one phase winding and another phase 8 wire. be.

Conventionally, with regard to slot insulation, various devices have been developed for mechanically inserting an insulating element for this purpose at the same time as the winding is inserted into the slot insulation, and these devices are currently generally carried out as part of an automatic winding insertion process.

On the other hand, the eye-to-eye insulation elements to be applied at the exposed ends of the stator windings from the core are usually located inside the exposed ends of at least one winding deployed along the central opening of the stator. A pair of parallel band-shaped insulating sheets connected by an insulating monofilament, which are in contact with each other, are formed into a ring and manually inserted, so that each sheet is applied to the exposed end of the phase winding at both ends of the core. After that, another phase winding is inserted to electrically insulate it from the exposed end of the previous phase winding. In this case, when drawing the insulating sheet metal, the monofilament must be aligned with and span any suitable winding slot within the core's central hole.

In this way, it is extremely troublesome to position the ring of band-shaped insulating elements manually inserted along the array of exposed winding ends, and to achieve complete phase-to-phase insulation after finishing the winding ends. It is.

In addition, manual insertion of insulation elements requires considerable attention and time, and although various attempts have been made to develop technical means to achieve this mechanically, there are currently no satisfactory automated devices. has not been realized.

An object of the present invention is to provide a method for automatically inserting an interphase insulating element into a stator winding of a motor, and an apparatus for carrying out the method, thereby achieving accurate and rapid motor winding insertion work. This is an attempt to implement phase-to-phase insulation.

In order to achieve the above object, the interphase insulating element insertion method of the present invention includes: a) inserting a band-like part made of an electrically insulating sheet having a pair of parallel bullets at an interval corresponding to the laminated thickness of the stator core; Prepare two planar elongated materials cross-linked by a large number of monofilament insulators spaced sequentially in the length direction, and b) arrange the elongated sides of the two sheets so that they are parallel to each other. j) At this position, j) cut each of the long side slants to a size sufficiently longer than the half circumference of the center opening of the zero stator core, so that at least two pieces of each forming two opposing mutually insulating elements having monofilaments; 11) directing each central region of each pair of strips in the cut and formed two insulating elements toward the corresponding strip of the other insulating element; 111) A portion of each band-shaped portion other than the trap area is formed in a circle such that the corresponding edges of the two insulating elements substantially overlap each other. The arcuate curvature allows the monofilament of each insulating element to have an angular relationship consistent with the corresponding population of winding slots in the stator center opening, and to be threadable between the centers as a whole. C) forming a cylindrical profile with a diameter of C) maintaining the cylindrical profile;
inserting two insulating elements into the center opening of the stator core, which at least partially cures the windings, while waiting at an insulating element insertion position, and exposing each pair of band-like parts on both sides of the opening; By aligning the monofilament with the corresponding stator slot and simultaneously releasing the force for a central trap area in each insulation element strip, a restoring force is exerted on each strip to increase the center aperture diameter. As a cylinder of larger diameter at least −γ? The present invention is characterized in that the monofilament is brought into contact with the exposed coil end of the stator winding of the IS, and the monofilament is inserted into the corresponding winding slot.

The present invention also provides an apparatus for carrying out the above method, comprising: a) a pair of parallel elastic electrical insulating sheets with a distance L corresponding to the laminated thickness of the stator core; Insulating element preparation process ii'7.
At A, the long length is received in a parallel state facing each other, and the long length is transferred to the front end of the part that is sufficiently longer than the circumference and includes at least two monofilaments. a guide mechanism for supporting at a rear end; 1)) operative in conjunction with an anteroposterior/iAt support section in the guide mechanism to cut the sufficient length section of the band from the elongated annulus; C) a mechanism that constitutes two facing interphase insulation elements; and C) a central region of each strip of the two cut insulation elements that protrudes toward the corresponding strip of the other insulation element. d) a set of tramping sections for suppressing from the outside so as to create a trap area; and d) a center opening radius of the stator for suppressing a portion other than the trap area from both ends of each strip. e) a former electrophase having an arcuate concave surface with a radius of curvature substantially equal to; e) an axial trap groove cooperating with the trapping section layer mf to receive the trap region from the inside; The monofilament of each element is aligned with the corresponding winding slot of the stator center opening by having a cylindrical surface supporting the strip outside the trap area from the inside in cooperation with the former. f) an axially movable center post capable of holding the cylindrical body of the insulating element in a hanging angle position; g) a mechanism for supporting the stator core into which a winding is at least partially inserted; g) driving the center post in the axial direction to increase the rate (+);
1i; By moving the monofilament from the orthopedic position 1A to the insertion position I3, the monofilament is aligned with the corresponding slot entrance in the central opening, and the cylindrical part consisting of each strip is inserted on both sides of the stator. a center post drive mechanism for exposing the center post from the surface and corresponding to the exposed coil end of the stator winding; and a sleeve hole having an inner circumferential surface with a diameter that can maintain the cylindrical shape of the insulating element, the sleeve hole being moved together with the center post to directly above the stator core on standby. This is an insertion device for interphase insulating elements for motor windings characterized by the above features.

Preferred embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a plan view showing an example of a 4"l length for the interphase insulation element employed in the method of the present invention. Parallel strips (2) made of an electrically insulating sheet, for example a polyester film with a thickness of about 01H.

(2) and a number of monofilaments of similar insulating material b, cross-linking the strips at successive intervals and at right angles.
(3). Parallel bands (2).

The interval (2) is slightly longer than the laminated thickness of the stator core, which will be described later. The strips are arranged at intervals sufficiently longer than the half circumference of the central opening of the stator core. It is designed to form an insulating element at the i5 position, and therefore has a V-shaped notch (4) on each outer side at the interval as a dividing line.

In addition, there is a notch (4) on the inner and outer edges of each jt7-shaped part (2).
)+(<・)... U-shaped notches (5) and (6) are provided at each intermediate position of the hit. Sennofuiramen)
(3) , (3)・・・・・・・・・・・・ are V-shaped notches (4) and (4・)・・・・・・・ respectively.
They are welded or adhesively fixed on both sides of .

Figure 2 shows two interphase insulating elements (7a) and (7b) cut from the aforementioned long material, overlapping both ends of each band to form a ring, and inserting them into the winding slots of the stator core (8). This figure shows a state in which the exposed ends of the phase windings (9a) + (9b) are inserted into contact and engaged with each other.

Note that 00) is the exposed end of the slot insulating element 3. Although not shown in Figure 2, the monofilament (3)
(FIG. 1) will be located within the appropriate winding slot within the center distance 1] of the iron core (8).

FIG. 3 is a front view showing an embodiment of the automatic mutual insulation element insertion machine of the present invention. This mechanical device;・”1 is the machine frame (1j
) In the soil, the conveyor device for transporting the iron core i”1′ (12
) formed by the insulating element insertion position B and its subordinate position i'
The insulating element 111 (i 4 Aij forming position A) is configured such that the center post (described later) of the semi-D111 forming machine Uf and the sleeve holder 03 can move back and forth between them.

The main mechanisms and operations at the preparatory position i1A are as shown in FIGS. 4 to 8, which depict the intermediate horizontal cross section at position A in FIG. 3.

The center post 04) located in the center in FIG. It is a possible cylinder. A pair of trapping grooves (15) + (15) formed in the radial direction are arranged on both the upper and lower sides of the center post in the figure.
), from the intermediate cylindrical surface of (15), 4 blades are accommodated >7+lt toward the center 1161+, in total (16
) has been established. Blade storage ft+2<168) and (16b) on each side of the center post 04)
A fixed filament guide with four arcuate sides extending between
17) 07) has been awakened for 6 years. The thickness of the fixed filament kite 07) is 41st and 10th! (J method) in the direction penetrating the angular surface is the A1) shaped part (2) of the insulating element (7), (
2) The side part of the image is a slope formed from the dIJ↓-shaped concave surface at the tip (1B2), (181)) and a 1'-line surface (19a), (19b) extending from the rear end.
). Hard scene j4-r lament Kaido (+
7) Insulated Yonago former (1m below)
2 (the eaves are arranged in the left and right direction of the figure with I nJ function. The diameter of this center post is slightly smaller than the opening diameter of the iron core. 1 Only some formers are shown)
The tip facing the center post is formed as a concave surface (ZOa) with a radius of curvature that matches the cylindrical surface of the center post.

There is a retreat position (fourth position) on both sides of the insulation element former (2o).
A cutter (21) having a cutting edge along the distal edge (20b) of the former as shown in FIGS. This cutter has an outer surface (211) extending parallel to the former (〇〇) with the cutting edge (21a) as one end.
) serves as a guide surface for one side of the elongated wire (1) of the insulating element. In the guiding direction (21b) of these fixed cutters (2]), the long A barb (]) A) is inserted into the shaped part (21b).
2) and the guide surface (ZZa) of the outer fixed guide = a are opposed to each other at a distance that allows the monofilament (3) attached to -1'11 to be inserted therethrough.

In FIG. 4, between each pair of outer fixed kites H located above and below the center post θ4), upper and lower movable cutters 03) are positioned toward the center post at a level corresponding to the fixed cutter 00. At an intermediate level, that is, in a level range corresponding to the fixed filament guide (17), a movable filament guide H is also arranged so as to be slidable toward the center post. The intermediate part (44a) that engages with the cylindrical surface of the movable filament guide (21 is the center boss by being driven toward the center post) (14) and the slope (lSa) and side surfaces of the fixed filament guide 07 on both sides thereof. (19a)). There is also a trapping groove (15) between the cutting edge (23a) and (z3a) of the movable cutter (c) (center boss) (14).
A rod insertion hole (25) opposite to the rod insertion hole (25) is drilled and a trapping rod (25a) is slidably inserted therein.

In the configuration described in ``2'', the insulating element former is viewed from the left and right directions indicated by ``R'' and ``!'' in Figure 4. t) shaped part (2) is the guide surface (2tb) of the fixed cutter (2]) and the fixed guide (a).
)-(2Za), and the V-shaped groove (4) of the band-shaped portion (2) is stopped at a position corresponding to the cutting edge (21a) and (z3a). This 11. The monofilament (3) is connected to the filament guide (17) and (2).
It is located within the slope of →.

Here, as shown in Fig. 5, a movable filament kite (2
4) advances toward the center post (14), and the monofilament is supported at the starting end of the inclined kite of the filament guide 04). From this state, as the filament guide (2→ moves forward), the movable cutter ■,
3) is driven according to this, the belt-shaped part (
2) is an insulating element cut by the cutting edges (21a) and (z3a) and extending linearly between the cutting edges (Zaa) (23a) on both sides of the movable cutter (c), (7; I)
and (7b) are formed (6th Ill).

Next, the trapping river rod (25a) is moved to the movable cutter G.
As shown in FIG.
) and insert it. As a result, both ends of the strip (2) are pulled toward the center, and the monofilament (3) follows the pull on the kite slope (H+
It can be moved closer to the center post by sliding between a) and (24b). Such movement of the monofilament is caused by moving both ends of the shaped part (2) of the insulating element to the insulating element former (1).
20), the position sufficiently corresponds to the inside of the concave surface (2 oa) at the tip.

In this state, the insulation element former (2o) is driven toward the center post (+4), and the insulation element (7a) and (
The tip of each corresponding strip (2) of 7b) is the former 7
(20) (7) Next ii? The approximately cylindrical ring is pushed by the concave surface (2 oa) of ij, approaches -1i, and substantially forms a shape, and eventually comes into close contact with the cylindrical surface of the center post 0→, as shown in FIG. form 15. Here the center post (
1 is surrounded by insulating elements (7a) and (7) along with its central rod (26) and the blade in the receiving groove (16).
It begins to descend while maintaining the circular frtJ-shaped outline of 1,1).

As shown in Fig. 3, a sleeve holder (13) is waiting under the surface of the forming position, and when the center post enters this sleeve, the cylinder of the insulating element "'f" is inserted into the insulating element former ( 20) and the trapping rod (2), the outer peripheral surface is pressed by this sleeve boulder (13) (No. 91g+).

The center post is like this sleeve boulder-03)
Once the center rod (2 o'clock) and the blade (27) have completely settled in the center, they further descend as one toward position B shown in Fig. 3.At position 11〈tB, the stator core ( 8) was waiting with part of the phase winding held, and the sleeve boulder 03) collided with the upper end surface of the iron core (8) (inside the exposed end of the partially held winding). However, the center post (]→ is connected to the center rod 0 and the insulating element (7) together with the blade.
Holding the cylinder consisting of a) and (7b), it descends further and enters the central opening of the iron core (8).

Iron core (8) supported at position B according to preset settings
Among the many winding slots e→ in the blade Q′
In this case four slots (28a) corresponding to 7) ~
(28d) l'i, this b freh"(2")
G1. '(6 (14 ni matching J- becomes -C.

The center post (14) stops when it completely enters the core (8), which has the same length and lamination thickness, and the sleeve boulder (13) is inserted into the core (8). soil! I:A! Rising from the surface and above this i/i
The periphery of the strip portion (2) of the insulating elements (7a) (7b) located directly above the surface of Formula 1 is released. At this time, since the circumference of the insulating strip (2) protruding from the lower end of the iron core (8) is left open at the same time as the protrusion, it is formed by a tramping rod as shown in Fig. 7. The trapping parts (za) and (zb) of the band-shaped part are restored and expanded by their own elasticity, and '! The t'i-shaped part (2) as a whole forms a cylinder of larger diameter.

The strips (2) of the insulating elements (7a) and (7b) with enlarged diameter are connected to the exposed winding ends (9a) and (9b) of the iron core (8).
The monofilament (3), which is fixed in pressure contact with the winding slot (28a) to (zsd), and is drawn outward accordingly, enters the corresponding winding slot (28a) to (zsd) as shown in the tenth line. In FIG. 10, the blade (2''I) is shown driven outward to assist in moving the monofilament (3) into the slot.

In the embodiment shown in 1-1, the back side of the blade (27) (
By using an inclined cam follower on the side opposite to the monofilament, and further lowering only the center rond (2 (force -t'fls), the upper cam surface and the rod 0), The blade 0'?) is driven by 1. In fact, even without such a blade and its drive mechanism, the monofilament l-(3) It should be noted that the blade and the blade drive mechanism are not used as auxiliary means since the blade is fully contained within the blade.

In addition to the above-mentioned blade drive mechanism, for example, a diagonal slot is installed in the blade: I center rod Q
Connect the bottles that slide in these slots to the unit [1 and 1
4'nd (c) and center post (14) and σ)
The mechanism for driving the blade by 411%J movement may be IiJ u.

With the above steps, the insertion operation of the interphase insulating element as shown in Fig. 2 is completed, and in order to further attach four new phase wires from above the insulating element between stator core (8) G and 4 and 11. Step (not shown) G is sent A.

Figure 11 shows the insulation element standard (+iif
It is a broken-away perspective view showing the adjustment mechanism together with the center post 04) for confirmation. As is clear from this first [IM force], the filament guide 04
) are provided on two sides, and a strip (2) extending vertically in parallel at each element G (G) 4. : Illusion L, the existence of four insulating element formers (c), and other 4th ~
It is helpful to understand the elements in plan view G and varnish 41+i>j− in three dimensions as shown in FIG.

[Brief explanation of the drawing]

Fig. 1 is a plan view showing an example of the interphase insulating element monthly rate adopted in the method of the present invention, and Fig. 2 is a stator core in which the insulating element in Fig. 1 is made into a cylindrical shape and partially has phase lines. FIG. 3 is a perspective view showing the inserted state; FIG. 3 is a front view schematically showing the apparatus for carrying out the insulating element insertion process of the present invention; FIGS.
Fig. 8 is a plan view showing the υ' part of the insulation element preparation and shaping mechanism along with the operating procedure, Fig. 9 is a cross-sectional view showing the state in which the cylinder of the insulating element that has been prepared is transferred, and Fig. 10 is the insulation element preparation and shaping mechanism. FIG. 11 is a cross-sectional view showing the state when the cylinder of the element is inserted into the iron core, and FIG. 11 is a perspective view of the main part of the insulation element shaping mechanism. (2)...Insulating element strip (3)...
・・・・・・Monofilament (7)・・・・・・・・・
・Interphase insulation element (8)...Stator core (9a) (9b)...Phase winding Qa
)・・・・・・・・・Sleeve holder (1→・・・・・・
・・・・・・Center post (20)・・・・・・・・・
Insulating element former (21) G72)...
・・Filament guide (2 strokes・・・・・・・Movable cutter (2 strokes・・・・・・・Movable filament guide Q7)・・・・Blade patent applicant Mishita Kiki Co., Ltd. Neni 2 Agents: Takeshi Arata, 1 person outside of nIS

Claims (2)

[Claims] (1)a) A band consisting of a pair of elastic electrically insulating sheets parallel to each other at intervals corresponding to the laminated thickness of the stator core is formed by a large number of monofilament insulators sequentially arranged at intervals in the length direction. Flat IJ formed by crosslinking
Prepare two pieces of long side diagonals of 'i7 shape, b) Supply the two long side diagonals of 'nji' to the insulating element preparation position so that they are aligned and parallel to each other, and at this position 1) By cutting each of the cut pieces into 17 pieces sufficiently longer than the half circumference of the central opening of the stator core,
forming two opposing mutually insulating elements each having at least two monofilaments; 111) mechanically forcing the trap area to protrude towards the corresponding strip; By substantially overlapping arcuate curvature, the monofilaments of each insulating element have an angular relationship that can be aligned with a corresponding population of winding slots in the central aperture of the stator, and the central aperture as a whole. C) forming a cylindrical profile with a diameter that allows insertion into the insulating element; The monofilament and the corresponding Ii! are inserted into the central opening of the stator core to expose each pair of band-shaped portions on both sides of the opening, and the monofilament and the corresponding Ii! 71 stator slots and at the same time exerting a restoring force on each ii'I shaped part by 1 r dividing the force for the central trump area in the strip of each said insulating element;
A motor characterized in that a cylinder having a diameter larger than the center-to-center diameter 11 is brought into contact with the exposed coil end of at least a part of the fixed r winding, and 1) the monofilament η is inserted into the corresponding winding slot. A method for inserting an interphase insulating element for a fixed T-wound wire. (2)a) A pair of elastic 1U insulating sheets arranged in Ia rows at intervals corresponding to the laminated thickness of the stator core are sequentially spaced in the length direction. Two planar elongate sheets formed by connecting and connecting a large number of monofilament I/insulators arranged in parallel with each other are received in a parallel state facing each other at an insulating element preparation position A,
A guide device 91η for supporting these long phases at the front and rear ends of the portion containing at least two monofilaments, which is sufficiently longer than the half circumference of the central opening of the stator core; ) Front and rear η in the guide mechanism
1.1 a mechanism operatively associated with a support for cutting said strip of sufficient length from said elongate layer to form two opposed interphase insulation elements; ) Pressing the central region of each strip of the two cut insulating elements from the outside so that they become trap areas that protrude toward the corresponding '11'' J-shaped part of the other insulating element. d) an arcuate concave surface with a radius of curvature substantially equal to the radius between the centers of the stator for pressing a portion of each band other than the trap area from both ends thereof; e) a trap groove extending in the 1lqb direction for cooperating with the trapping layer to receive the trap area from the inside, and cooperating with the former part 4 to receive the trap area from the inside. The monofilament of each element is fixed to the corner I9 position that can be aligned with I in the corresponding winding slot of the center opening by having a circular piece supporting the above-mentioned jf) shaped part. At least a center post movable in 11q11 directions capable of holding a circle 5ji of the insulating element, and an insulating element insertion position B set below the insulating face preparation position A. a mechanism for supporting the fixed-rl-iron core into which a winding is partially inserted; g) driving the center post in the axial direction to
#f':'t;, by moving the monofilament from the shape position A to the insertion position B, the monofilament is 1111
The cylindrical portion consisting of each strip is exposed from both sides of the stator to correspond to the exposed coil end of the stator winding, while aligning with the corresponding slot population in the center opening.
center boss), drive mechanism, and h) center post from position A to I3.
While moving, move from directly below the former to position I3.
and a sleeve holder having a Nikkei inner circumferential surface capable of holding the cylindrical shape of the insulating element, and the sleeve holder is configured to move together with the center post up to the center post of the stator iron waiting in the center. A matchmaker device for interphase insulation elements for motor windings, characterized by the following.