JPS61288752A - Coil inserting apparatus equipped with lock prevention device - Google Patents

Abstract

PURPOSE:To provide a mechanism securing the position in the horizontal section at the top of coil supporting blades so that a coil insertion can be performed without causing damage to a stator core and preventing the coil from locking caused by a wire blockage between blades. CONSTITUTION:When a coil-inserting device 6 and an auxiliary device 14 come down, a coil winding 4 is completely inserted into a stator core 3, where the inserting device 6 comes further down pulling out a blade 11 from the loop of the coil 4, then removes a wedge tool 9 and the auxiliary device 14 from the stator core by letting them ascend. In this case, as the coil supporting blade 11 passes through a pit 16 at an intermediate part 14b of the auxiliary device 14, the position in the horizontal section is secured and the blade 11 is easily pulled out, even if it is drawn outwards and in the circumferential direction by the loop of the coil 4 of short circumferential length as shown in the figure.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to an anti-locking mechanism in a coil insertion machine for a rotating electrical machine.PRIOR ART A recently developed system for a coil insertion machine for a rotating electrical machine is , as shown in Fig. 4, a cylindrical holder (2) that can vertically move a large number of coil support blades (1) protruding from the top surface.
The wire-wound coil (
4) is introduced into the axial slot formed in the opening wall. This embodiment is shown in FIG. 5, in which the coil support blades (1) of the coil insertion machine clamp the coil winding (4) during their adjacent spacing and draw it into the slot of the stator core (3); After the entire length of the slot is filled with the coil winding, the end of the coil winding (4), which remains in this position, slides on the inner surface of the end loop and is removed downward.

Problems to be Solved by the Invention In the above embodiment, the escape of the blade after the coil is inserted into the slot is carried out without any hindrance only when the circumference of the coil winding (4) is sufficiently long as shown in Fig. 5. However, when the coil circumference is short, as shown in Figures 6 and 7,
The blades (1) are pulled outwardly and circumferentially by the end loops of the coil windings (4) in contact with them, and their outer surfaces, especially the grooves (la), are drawn against the open wall of the stator core (3). Pressure welding and rubbing may cause core laminates to be twisted, deformed, or damaged, and even cause the machine to stop (locking) due to jamming of overlapping wires between adjacent blades.However, the coil circumference itself Aiming to improve efficiency by reducing copper loss in rotating electrical machines,
Also, from the standpoint of saving winding material, the length should be as short as possible.

Therefore, it is an object of the present invention to provide a coil insertion machine having a mechanism capable of sympathetically pulling out the coil support grade from the coil end loop inserted into the stator even in the case of a coil winding having a short circumference. It is.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention provides a method in which the lower ends of a plurality of upright coil support blades arranged in an annular manner are held on the outer peripheral surface of a cylindrical holder. Become,
a coil insertion mechanism for inserting the coils supported by the blades into a plurality of axial slots in the opening wall of the stator core by fitting and passing them through the central opening of the stator core from above; and supporting the plurality of coils in the operating position. a cylindrical body that is independently movable up and down, in which an annular array of a plurality of wedge guide blades, each having an inner surface that warms the outer surface of each blade, protrudes downward, and the interval between adjacent blades is used as a wedge guide groove; and a wedge tool consisting of a wedge pusher that slides in the guide groove, and a columnar body that fits into the inner peripheral surface of the blade array of the coil insertion mechanism when inserting the coil and wedge into the stator core, and the outer periphery of the wedge tool. A vertically movable auxiliary mechanism comprising a plurality of wedge abutting fins protruding from the surface to fit into gaps between adjacent blades of the blade array, and the tip of the coil supporting blade of the coil insertion mechanism is narrowed. As a result, the diameter of the outer contour circle in the annular arrangement of the tips is reduced, and the outer circumference of the columnar body of the auxiliary mechanism corresponds to the reduced tip portion of the blade by fitting with the coil support blade during the insertion operation. A coil insertion machine equipped with an anti-locking mechanism, characterized in that a plurality of vertical holes through which the tips are inserted are provided in a partial area to prevent distortion or deflection of all coil support blades. It is composed of

Function The coil insertion machine of the present invention maintains the position of the blade tip in the horizontal plane using the vertical hole of the auxiliary mechanism in the above-described configuration, so that the blade does not bend substantially even when subjected to tensile force from the wire. This makes it possible to avoid pressing or forcibly rubbing against the opening side surface of the core.

Embodiment FIG. 1 and FIG. 2 show an embodiment of the coil insertion machine of the present invention, and correspond to the state before coil insertion and after coil insertion (but before blade extraction), respectively.

In these figures, a core receiver consisting of an annular body (5) located at the bottom supports the stator core (3) and sequentially brings it to the illustrated coil insertion position, and when the coil insertion is completed, sends it out to the next process or recovery position. It forms part of a conveyor means (not shown) for this purpose.

a lower tool coaxially aligned with the stator core (3) shown;
That is, the coil insertion mechanism (6) includes a main body configured by fixing a plurality of coil support blades projecting from the upper surface to the outer peripheral surface of the upper part (2a) of the cylindrical holder, and the lower part (2b) of the cylindrical holder. It consists of a drive rod (8) having a ball clutch end (7J) that engages with the hollow part.The main body of this coil insertion mechanism (6) is connected to the stator core (3).
Before or after the coil is brought into the illustrated coil insertion position, it is transferred from the side directly above its core, and the holder lower part (2b) is inserted into the opening wall (3) of the stake (3) as shown in FIG. 3a) and at the same time the drive rod (8) is raised and its ball clutch end (
7) is engaged with the holder lower part (2b).

The wedge tool (9) that engages with the coil insertion mechanism (6) from above is a plurality of wedges arranged in an annular manner, each having an inner surface that corresponds to and slides on each outer surface of the blade (1). The main body includes a cylindrical body in which wedge guide blades 00) are protruded downward, and forms a plurality of wedge guide grooves (121) aligned with coil receiving slots in the opening wall of the stator core (3) at intervals between adjacent blades. The wedge butcher (13) descends into this wedge guide groove (121) and introduces the wedge (insulating wedge) placed in the groove (121) into the slot of the stator core (3) at the same time as the coil is inserted. It is something.

Wedge Two/L/(Auxiliary mechanism inside 91 (1
4) consists of a downwardly directed permitting body that engages with the coil support blade (111) of the coil insertion mechanism (6) during operation, and typically fits into the adjacent spacing of said blade (1) 1; It has a wedge abutting fin (151) at the outer end for abutting the wedge in the wedge guide groove (121).

According to the present invention, the coil support blade +tn is made slightly longer than that of the conventional type, and the width of the tip is narrowed by cutting off the outside part to the extent of its extension. Therefore, during operation, the permitting body of the auxiliary mechanism f141 has a lower part (14a) corresponding to the normal width portion of the coil support blade (111).
Only the wedge abutment fin (151) has an annular array of wells (16) into which the narrow end portion (lla) of the blade a1 is fitted at the periphery of the intermediate portion (14b), thereby Constitutes an outer diameter holder for the coil support blade (111).

Further, the upper part (14c) of the permitting body includes a disc body that slides only on the inner surface of the blade aυ, and further includes an upper end plate a'7 that comes into contact with the tip of the coil support blade (111).

In the configuration of the embodiment as described above, when the coil insertion mechanism (6) supporting the coil winding (4) as described above is brought to the insertion preparation position into the core (3) shown in FIG. Wedge Two/I/ (9) and the auxiliary mechanism side descend, and the former's wedge guide blade 00) passes through the loop of the coil winding (4) along the blade (111) of the coil insertion machine, and inserts its tip into the core. (3), and the latter 04) fits into the blade (111),
Its upper end plate (1η comes into contact with the tip of the blade (Ill).

This state is as shown in FIG. 1, and the coil insertion mechanism (6) descends together with the auxiliary mechanism from this state.

When the coil insertion mechanism (6) and the auxiliary mechanism (14) are lowered to the position shown in Figure 2, the coil winding (4) is fully inserted into the stator core (3), where the insertion mechanism (6)
further descends and moves the blade (111 to Koi/l' (
Pull it out from the loop of 41, then use the wedge tool (9
) and auxiliary mechanism (141) are removed from the stator core (3).

In this case, the coil support blade (11) is attached to the middle part (14b) of the auxiliary mechanism 04) as shown in FIGS. 2 and 3.
In order to pass through the vertical hole (16) in the figure, even if they are pulled outward and circumferentially by the loops of the short-circumference carp (v(4)), they maintain their position in the horizontal cross-section and are forced to It is pulled out without any problem.

Effects of the Invention As described above, the present invention has a mechanism for maintaining the position in the horizontal cross section at the tip of the coil support blade, so even when the coil circumference is short and the coil is pulled by v/l/-p. The coil insertion operation can be completed without deflecting outwardly or circumferentially, thereby damaging the stator core or causing locking due to wire jamming between the blades.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal cross-sectional view of a main part showing the coil insertion start position of a coil insertion machine for a rotating electrical machine according to the present invention, FIG. 2 is a longitudinal cross-sectional view of a main part showing a coil insertion position of the coil insertion machine, and FIG. 1 is a cross-sectional view showing the middle part of an auxiliary mechanism configured as an outer diameter holder for a coil support blade according to the present invention, and FIGS. 4 and 5 are an example of a conventional retractable coil insertion machine,
FIG. 6 is a vertical cross-sectional view showing the state before and after the coil is inserted, respectively, and FIG. The end view and Fig. 7 are partially enlarged views ◎ fil, H... Coil support blades (2), (2
a), (2b)...Cylindrical holder C3 (...Stator core (4)...Coil winding (5)...Core holder (6)... ...... Coil insertion mechanism (9) ... Wedge tool α0) ... Wedge guide blade α4)
・・・・・・Auxiliary mechanism

Claims (1)

[Claims] Consisting of a plurality of coil support blades, each of which is arranged upright in an annular shape, the lower ends of which are held on the outer peripheral surface of a cylindrical holder, and which are inserted into the central opening of the stator core from above.
a coil insertion mechanism for inserting the coils supported by the blades into a plurality of axial slots in the aperture wall of the stator core by passing the coils therethrough; and a coil insertion mechanism for slidingly engaging an outer surface of each of the plurality of coil support blades in the operating position. A cylindrical body having an annular arrangement of a plurality of wedge guide blades having an inner surface projecting downward, and using the interval between adjacent blades as a wedge guide groove that can be independently moved up and down, and a wedge that slides in the guide groove. a wedge tool consisting of a pusher, and a columnar body that fits into the inner peripheral surface of the blade array of the coil insertion mechanism when inserting the coil and wedge into the stator core, and a columnar body that fits into the inner circumferential surface of the blade array of the coil insertion mechanism, and has a wedge tool on the outer peripheral surface between adjacent blades of the blade array. A vertically movable auxiliary mechanism is provided with a plurality of wedge abutment fins protruding from the coil insertion mechanism, and by narrowing the tips of the coil support blades of the coil insertion mechanism, the outer circumferential contour of the annular arrangement of the tips can be reduced. At the same time as reducing the diameter of the columnar body of the auxiliary mechanism, the tip portions are inserted into a partial range corresponding to the reduced tip portion of the blade by fitting with the coil support blade during the insertion operation at the outer peripheral portion of the columnar body of the auxiliary mechanism. 1. A coil insertion machine equipped with an anti-locking mechanism, characterized in that a plurality of vertical holes are provided to prevent distortion or deflection of all coil support blades.