JPS5972965A - Coil inserting device for stator winding - Google Patents

Abstract

PURPOSE:To enable to insert a coil having high space factor in a slot without damaging a coil wire blank by using two blade supporting mechanisms and alternately supporting a plurality of blades by the mechanisms. CONSTITUTION:A sleeve rod 6 is driven by a lifting mechanism and lifted. The head 7b of a sleeve rod 6 lifts the upper head 7a, and blades 3a, 3b simultaneously lift. The upper end of all turns of a coil 13 is lifted by the head 7a to be projected from the upper end surface of the stator core 10, and the coil side is inserted into the slot of the stator core. Then, only the sleeve rod 6 is lowered. In this case, the upper end of the coil is frictionally contacted only with the blade 3b. Subsequently, a central rod 8 is lowered to the initial position, and the blade 3a is lowered therewith.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for inserting a winding coil into a stator core of a rotating electrical machine.

The mechanical device for inserting the preformed winding coils into the axial slots in the central aperture wall of the stator is basically a plurality of coils (slot side walls) in the stator aperture.
This includes a fixed annular array of a plurality of coil hooking grades extending in the axial direction corresponding to each blade, and a stripper mechanism that supports the coils hooked on these blades and moves up and down. The coil, which has been hooked to the blade in the desired arrangement, is pulled into the system slot by the lifting of the stripper mechanism, sliding on the grade, and the upper end substantially passing through the stator opening.・It is.

However, in such a mechanism, when the coiled lv wire is pushed up into the stripper mechanism, it may be damaged due to friction with the blades located on both sides, the wire may be damaged due to friction between the wires, and the coil may be sandwiched between the grades. Depending on the density of the wire, it may not be possible to insert it into the slot. Therefore, as an attempt to reduce the friction between the grade and the coil, when the mechanism rises, the movable blade also rises, so the coil hooked to the grade array only rubs against the fixed grade, which is half of the number of the coils. , coil damage and locking (conditions in which insertion is impossible) due to friction with the blade are significantly alleviated3.In addition, in this method, the movable blade also descends together with the stripper mechanism, and at that time, the hiko'! This will rub against the coil, but even if it rubs against the same number of blades (fixed grade on the outward trip of the stripper mechanism, movable grade on the return trip), the coil that has been inserted into the slot and fixed for the time being. Rubbing of the movable grade against the surface is not a problem.

Therefore, the coil space factor (SO
96), it is necessary to solve the problem of friction between the blade (fixed grade) and the coil when the coil is inserted (when the stripper mechanism is raised).

The present invention aims to eliminate the drawbacks of the conventional coil insertion mechanism as described above, and to provide a device that enables insertion of a coil with a high space factor in a slot without damaging the coil wire. .

Briefly, to achieve the above object, the present invention provides a mechanism for supporting a stator core of a rotating electric machine having a plurality of axial slots formed in an inner wall of a central opening, and inserting coils into the plurality of slots. In the device, a portion supporting one end surface of the stator core can be freely fitted into the central opening extending in the axial direction of the stator corresponding to a plurality of art collections forming each side wall of the plurality of slots. an annular array of a plurality of coil hooking grades; and at least two groups capable of supporting the plurality of grades by dividing them into at least two groups and hooking a coil hooked thereto in cooperation with the supported grades. By simultaneously raising the mutually axially movable blade support mechanisms and the at least two grade support mechanisms, substantially all of the plurality of grades located outside the central opening of the stator core are simultaneously raised. The present invention provides a coil insertion device for a nutator winding, characterized in that it is provided with a drive mechanism for raising the coil to substantially penetrate the center opening and lowering it to the at least 2' position.

In a preferred embodiment of the present invention, two grade support mechanisms are used, and the plurality of blades are connected to the two grade support mechanisms.
It is designed so that it is alternately supported by different support mechanisms.

The non-explosion was due to the use of the above configuration, and the drawing of the edge coil into the slot fulfilled its original role as all the grades supported by the support mechanism rose together, and Since the grades are lowered one group at a time, friction between the coils and the grades is reduced, and all grades can be easily removed from the stator opening without damaging the coils or causing them to fall out of the lot. It is something that can be extracted. .

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a vertical sectional view showing one embodiment of the coil insertion device of the present invention, in which (1) is an upright cylindrical housing with an open upper end, and (2) is an inner circumferential surface of the housing (11). The wedge guide is arranged along the housing and also serves as a guide for the blades (3a) and (3b).
A bottom plate (41) is fixed to the lower end of the housing, and a blade guide tube (5) coaxial with and at the same height as the housing (1) is attached to the bottom plate (4). Guide cylinder (having a hole that matches the diameter of 51, guide cylinder 1
5) to slidably receive the sleeve rod (6). Attached to the top end of the sleeve rod (6) is a head (7b) with an approximately circular profile as a so-called stripper mechanism which moves up and down within the annular arrangement of the wedge guides (2). A hole that aligns with the through hole of the sleeve rod (6) is also formed in the center of the head (7b), so that the head (7b) and sleeve rod f6J slidably receive the center rod (8). It looks like this. A head (7a) serving as another similar stripper mechanism is fixed to the top end of the central rod 18+.

The heads (7a) and (7b) each alternately support a plurality of the grades (3a) and (3b) arranged annularly. A fixed grade portion (9) corresponding to grades (3a) and (3b) is formed on the outer periphery of the lower half of the grade guide tube (5).

At the standby position at the lowest end of the stroke of the sleeve rod (6) and center rod (8), the head (7u) of the sleeve rod (6) is supported by the upper end of the guide cylinder (5), and the head (7u) of the center rod (8) is supported by the upper end of the guide tube (5). 7a) is supported by the head (7), and in this state grades (3a) and (3b)
The lower end of the guide cylinder is supported by the upper end of the blade part (9) of the corresponding guide tube.

In the standby position, the tips of the blades (3a) and (3b) slightly protrude beyond the tips of the wedge guide (2), and the stator core 11ω has a central opening ) into the opening ([11, the lower edge of the wedge guide (2)
It is set in the working position by being supported by the tip of the The rectangular shape shown in the vicinity of the stator core IIQl opening 1LII is an insulating sheet in a plurality of slots formed in the axial direction in the opening TTU, and is hooked to grades (3a) and (3b). Even if the winding coil (131) is introduced into the slot, it will not cause a short circuit with the stator core (IQl).

Figure 2 shows the arrangement of the blades (3a) and (3b), the arrangement pattern of the winding coil housing 3, and the stator core l.
141 is a schematic diagram showing the relationship between 141 and 141.

As shown in the figure, each grade (3a), (3b) corresponds to a collection between adjacent slots (14). The wedge guide 12+ must provide a passage for the coil (13) to be hooked onto the blades (3a), (3b) and deployed as shown in FIGS. 2 and 1.

Coil insertion is performed as follows.

First, the sleeve rod 16J is driven by a suitable elevating mechanism (not shown) and rises. The head (7b) of the sleeve rod (6) pushes up the upper head (7a), so the flades (3a) and (3b) supported by these heads (7a) and (7b) rise simultaneously, and the As shown in Figure 8, the upper end of the head (7a) is the stator core 1.
1 (l) stops at a position slightly protruding from the upper end surface. When grades (3a), (3b) and head (7a) rise to this position, the upper end of all turns of the coil will be at head (7a). The coil side portion is pushed up and protrudes from the upper end surface of the stator core (10) and is introduced into the slot α4 (FIG. 2) of the stator core.

When the coil is inserted into the slot, the center rod 187 is held in the position shown in FIG. be lowered to. In this case, the upper end of the coil is only grade (3b) with reference to FIG. 2, and therefore,
Since the blades rub only on one side, there is much less friction than if all the blades were lowered at the same time, and there is little risk of damaging the coil or causing it to fall out of the slot.

Next, the center rod (8) is equipped with a dedicated drive mechanism (not shown).
It is then lowered to the initial position, and the positional relationship shown in FIG. 1 is again achieved. The lowering of the grade (3a) due to the lowering of the center rod (8) passes through one side of the upper end of the coil, which has already been freed from the presence of the blade (3b) on the opposite side, so there is very little friction. It is clear that there is no substantial effect on the coil.

The stator core, into which the coils have been inserted in this manner, is lifted by appropriate means and moved to the next working position.

As described above, the device of the present invention allows a large number of coil turns to be inserted into the slots of the stator core without destroying the coil wire. As a result, the coil can be accommodated in the slot with a space factor of 904 or more.

By the way, the space factor in the conventional fully fixed blade type is 70.
In the half-fixed, half-elevating method, the above-mentioned limit was 80 porridge per day.

In addition, the arrangement of the blades may be divided into 8 groups and lowered sequentially by an 8-layer rod.

[Brief explanation of drawings]

Fig. 1 is a vertical sectional view showing the main parts of an embodiment of the device of the present invention, Fig. 2 is a plan view showing the state of the grade portion, stator core and coil hooks, and Figs. 8 and 4 are during operation. FIG. 2 is a longitudinal cross-sectional view similar to FIG. 1 showing the positions of the blades. 111-----Housing +21-----Wedge guide (3a included (3b)---Grade (7a), (7b unit 111 head α toe Stator core (131----Coil patent Applicant: Sankokiki Co., Ltd. Agent: Shinjo Other Departments (1 other person)

Claims (1)

Claims: An apparatus for supporting a stator core of a rotating electric machine having a plurality of axial slots formed in the inner wall of a central opening for coil insertion into the plurality of slots, comprising: a plurality of coils that can be freely fitted into the central opening extending in the axial direction of the stator in correspondence with a portion supporting one end surface of the stator core and a plurality of teeth forming each side wall of the plurality of slots; an annular array of pulling grades; and at least two mutually supporting grades that are divided into at least two groups and capable of latching a coil hooked thereto in cooperation with the supported grades; By simultaneously raising the axially rotatable blade support mechanism and the at least two blade support mechanisms, substantially all of the plurality of grades located outside the central opening of the stator core are simultaneously raised. The plurality of grades are lowered one group at a time to the original position by substantially penetrating the central opening and lowering the at least two grade support mechanisms one by one. A stator winding coil insertion device characterized by being equipped with a drive mechanism. A stator winding coil insertion device using a +21 2irIA blade support mechanism, wherein the plurality of blades are alternately supported by the two support mechanisms. Claim No. (11)
Apparatus described in section.