Guiding device for copper wire embedding of motor stator coil

Abstract

The utility model relates to a guide device for embedding a motor stator coil copper wire, which comprises a fixed seat and two copper wire guide assemblies, and the two copper wire guide assemblies are respectively positioned on two opposite sides of the fixed seat; the copper wire guide assembly comprises a first positioning plate, a first rotating plate, a plurality of first guide grooves and a first positioning rod; the first positioning rod can slide in the first guide groove in the radial direction. A plurality of first driving grooves are formed in the first rotating plate, and the first driving grooves and the first guide grooves are obliquely formed; a driving rod is arranged on the first positioning rod in the direction of the first driving groove, and the driving rod is inserted into the first driving groove. According to the invention, under the condition of high slot filling rate, automatic production is realized and the copper wire is not damaged; and meanwhile, the copper wires are combed and guided before entering the stator slots, so that the copper wires can smoothly enter the stator slots, manual operation is not needed any more, and the production efficiency is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of motor stator manufacturing technology, and in particular to a guide device for embedding copper wires in motor stator coils. Background Technology

[0002] The rapid growth of the new energy vehicle market has provided a strong impetus for the development of new energy motor technology. Consumers' demands for range, performance, and comfort are constantly driving innovation in motor technology.

[0003] To improve the production efficiency of new energy motors, motor manufacturers are increasingly using automated production to replace manual labor. In the stator production process of new energy motors, copper wire needs to be embedded into the stator slots. Currently, there are embedding devices on the market that can automatically embed round copper wires into the stator slots. The highest slot fill rate for embedded round copper wires is currently around 85%-88%, which automated embedding can meet. When the slot fill rate of the round copper wires exceeds 88%, existing automated embedding devices cannot achieve this. During the embedding process, the round copper wires overlap, affecting their entry into the stator slots, and damage may occur, impacting the quality and pass rate of the motor products. Currently, to ensure quality, manual operation is usually used, resulting in low production efficiency, lack of automation, and inability to meet market demands. Summary of the Invention

[0004] To solve the above problems, this utility model provides a guide device for embedding copper wires in the stator coil of a motor.

[0005] The technical solution adopted by this utility model to solve the above problems is:

[0006] A guide device for embedding copper wire in a motor stator coil, located at one end of the motor stator, includes:

[0007] A mounting bracket, located at the end of the motor stator, is used to fix it to external components;

[0008] A copper wire guiding assembly, comprising two copper wire guiding assemblies located on opposite sides of a fixed base; the copper wire guiding assembly includes a first positioning plate disposed on one side of the fixed base, a first rotating plate disposed between the fixed base and the first positioning plate, a plurality of first guide grooves disposed on the first positioning plate, and a first positioning rod disposed within the first guide grooves;

[0009] The middle part of the fixed seat is provided with a clearance through hole, the first positioning plate is provided with a first through hole coaxial with the clearance through hole, a plurality of first guide grooves are arranged around the central axis of the first through hole, and the first guide grooves are arranged radially towards the first through hole; the first positioning rod can slide radially in the first guide groove; the middle part of the first rotating plate is provided with a rotating through hole coaxial with the clearance through hole, a plurality of first driving grooves are arranged on the first rotating plate, and the first driving grooves are arranged obliquely with the first guide grooves; the first positioning rod is provided with a driving rod in the direction of the first driving groove, and the driving rod is inserted into the first driving groove.

[0010] Further specifically, the first driving groove is arc-shaped.

[0011] Further specifically, the protrusions are arranged on the first positioning plate in the axial direction of the clearance through hole, the protrusions support the first positioning plate and form an accommodation cavity between the fixed seat and the first positioning plate, and the first rotating plate is located in the accommodation cavity.

[0012] Further specifically, the protrusions are arranged on the first positioning plate in the axial direction of the clearance through hole, the protrusions support the first positioning plate and form an accommodation cavity between the fixed seat and the first positioning plate, and the first rotating plate is located in the accommodation cavity.

[0013] Further specifically, the first rotating plate is provided with a driving handle.

[0014] Further specifically, the first positioning rod comprises a rod body and a head located at one end of the rod body, and the position where the head contacts the copper wire is arranged in an arc shape.

[0015] Further specifically, the head is a cylinder, and the diameter of the head is smaller than the thickness of the rod body; or the head is a conical surface.

[0016] Further specifically, the connection between the head and the rod body is an arc-shaped transition.

[0017] Further specifically, the first positioning plate and the fixed seat are fixed by bolts, the bolts are divided into first bolts and second bolts, the first bolts are arranged close to the clearance through hole, the first bolts pass through the first positioning plate, the protrusions and are fixed on the fixed seat, the second bolts are arranged close to the outer periphery of the fixed seat, a pad is arranged between the first positioning plate and the fixed seat, and the second bolts pass through the first positioning plate, the pad and are fixed on the fixed seat.

[0018] Further specifically, the first positioning plate and the fixed seat are positioned by a pin shaft, and the pin shaft passes through the first positioning plate and is inserted into the protrusion.

[0019] The utility model discloses a beneficial effect is: through the use of copper wire guide assembly, realizes the automation production under the condition of high groove full rate and will not damage copper wire, simultaneously, realizes the carding of copper wire before copper wire enters stator slot, makes copper wire can smoothly enter stator slot, will not be stuck because of copper wire overlap, no longer needs manual operation, and production efficiency greatly promotes. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is structural schematic diagram of motor stator;

[0021] Figure 2 It is structural schematic diagram after motor stator, coil copper wire, slot wedge assembly;

[0022] Figure 3 It is structural schematic diagram of the utility model guide device;

[0023] Figure 4 It is sectional structure schematic diagram of the utility model guide device;

[0024] Figure 5 It is Figure 4 Enlarged structural schematic diagram of A site in

[0025] In the drawing: 10, first copper wire guide assembly;11, first locating plate;112, first guide groove;12, first rotating plate;122, first drive slot;13, first locating rod;20, second copper wire guide assembly;30, fixed seat;40, cushion block;50, first bolt;60, second bolt;100, motor stator;110, stator slot;120, stator through -hole;130, first end;140, second end;150, opening. DETAILED DESCRIPTION

[0026] The technical scheme of the utility model will be described clearly and completely below in conjunction with the drawings, and obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by the ordinary skill in the art without making creative labor all belong to the scope of the utility model protection.

[0027] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. The direction of movement is also a relative direction of movement and is not limited to an absolute direction of movement. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0029] This application presents a guiding device designed for the assembly of stator coils in new energy motors. It ensures that the copper wires are not damaged when entering the stator slots, and at the same time, it combs and guides the copper wires so that they can smoothly enter the stator slots under a high slot fill factor.

[0030] In this application, as Figure 1 , Figure 2 As shown, the motor stator 100 is cylindrical with a stator through-hole 120 at its center. Several stator slots 110 are provided on the inner wall of the stator through-hole 120. Here, the direction parallel to the axis of symmetry of the motor stator 100 is defined as the axial direction, and the direction in the same direction as the diameter of the motor stator 100 is defined as the radial direction. The stator slots 110 penetrate the motor stator 100 along the axial direction, and each slot has an opening 150 on the inner wall of the motor stator 100 in the radial direction. The two ends of the motor stator 100 in the axial direction are a first end 130 and a second end 140, respectively. Using the axial direction as a reference, the direction from the first end to the second end is defined as upward, and the direction from the second end to the first end is defined as downward. The slot insulation is a layer of insulating paper disposed on the inner wall of the stator slot, used to separate the copper wire from the inner wall of the stator slot.

[0031] like Figure 3 and Figure 4The motor stator 100 coil copper wire embedding guide device provided by the application is located at the end (the first end 130 or the second end 140) of one side of the motor stator 100, which is the end where the copper wire enters, and can realize the automatic production of the motor stator 100 with a slot filling rate greater than 88%. The motor stator 100 coil copper wire embedding guide device comprises a fixed seat 30 fixed by an external part and a copper wire guide assembly arranged on the fixed seat 30, and the copper wire guide assembly has two first copper wire guide assemblies 10 and second copper wire guide assemblies 20, which are arranged one by one on the opposite sides of the fixed seat 30, and the first copper wire guide assemblies 10 and the second copper wire guide assemblies 20 are the same in structure.

[0032] As shown in the drawings, Figure 4 The fixed seat 30 is annular, has a through hole in the center, and has two end faces parallel to each other on the opposite sides, and the two copper wire guide assemblies are arranged one by one on the two end faces; the first copper wire guide assembly 10 is arranged close to the end of the motor stator 100, and the second copper wire guide assembly 20 is arranged away from the end of the motor stator 100, and is used for combing and guiding the copper wire.

[0033] Since the first copper wire guide assembly 10 and the second copper wire guide assembly 20 are the same in structure, the structure of the first copper wire guide assembly 10 will be described in detail below, and the second copper wire guide assembly 20 will not be described again.

[0034] As shown in the drawings, Figure 4 - Figure 5 The first copper wire guide assembly 10 comprises a first positioning plate 11, a first rotating plate 12 and a plurality of first positioning rods 13; the first positioning plate 11 is fixed on the fixed seat 30, a first through hole is arranged in the middle of the first positioning plate 11, the first rotating plate 12 is arranged between the first positioning plate 11 and the fixed seat 30, a rotating through hole is arranged in the middle of the first rotating plate 12, the first rotating plate 12 can rotate relative to the fixed seat 30, the through hole, the first through hole, the rotating through hole and the stator through hole 120 are coaxially arranged; a plurality of first guide grooves 112 are arranged on the first positioning plate 11, the plurality of first guide grooves 112 are arranged around the center axis of the first through hole, and the direction of each first guide groove 112 is arranged along the radial direction of the first through hole; one first positioning rod 13 is arranged in each first guide groove 112, and the first positioning rod 13 can slide in the radial direction of the first guide groove 112; a plurality of first driving grooves 122 are arranged on the first rotating plate 12, the number of the first driving grooves 122 is consistent with the number of the first guide grooves 112, the first driving grooves 122 are arranged obliquely relative to the first guide grooves, a driving rod is arranged on the first positioning rod 13, and the driving rod is inserted into the first driving groove 122 and can slide in the first driving groove 122.

[0035] The first driving slot 122 is moved by rotating the first rotating plate 12, the driving rod slides in the first driving slot 122 to drive the first positioning rod 13 to slide in the first guide slot 112 along the radial direction, so that the first positioning rod 13 extends or retracts to the center of the first through hole; the length of the first positioning rod 13 can realize the carding and guiding of copper wires with different diameters.

[0036] The first positioning rod 13 in the first copper wire guiding assembly 10 is arranged opposite to the first positioning rod 13 in the second copper wire guiding assembly 20, and the first positioning rod 13 in the first copper wire guiding assembly 10 is located above the first positioning rod 13 in the second copper wire guiding assembly 20.

[0037] As an embodiment of the present application, the first driving slot 122 is arranged in an arc shape, so that the driving rod runs smoothly.

[0038] As an embodiment of the present application, the fixed seat 30 is provided with a protrusion which extends from the fixed seat 30 to the first positioning plate 11 along the axial direction of the let-through hole, the protrusion supports the first positioning plate 11 and forms a containing cavity between the fixed seat 30 and the first positioning plate 11, the first rotating plate 12 is located in the containing cavity, the containing cavity provides a rotating space for the first rotating plate 12, and the height of the containing cavity is slightly greater than the thickness of the first rotating plate 12.

[0039] The protrusion can be a plurality of protrusions which are uniformly arranged along the axis of the let-through hole.

[0040] The protrusion can be a ring-shaped protrusion which is arranged along the axis of the let-through hole.

[0041] As an embodiment of the present application, the first rotating plate 12 is provided with a driving handle which is located outside the first rotating plate 12 and is formed by extending outward from the edge of the first rotating plate 12 along the radial direction, the first rotating plate 12 and the driving handle are integrally formed, and the driving handle provides a rotating power for the first rotating plate 12 by an external power source.

[0042] As an embodiment of the present application, the first positioning rod 13 includes a rod body and a head which is located at one end of the rod body, the rod body is arranged in the first guide slot, the shape of the rod body is matched with the first guide slot and is slightly smaller than the first guide slot to facilitate the movement of the rod body only in the radial direction, and the head is arranged in an arc shape at the position where the head contacts the copper wire to prevent the copper wire from being damaged, and the gap between two adjacent heads is used for the copper wire to pass through.

[0043] The head can be directly manufactured as a column, and the diameter of the head is smaller than the thickness of the rod body, so that part of the head can enter the first guide slot.

[0044] Furthermore, the head can be directly made into a cone, with the top of the cone set as a sphere.

[0045] The connection between the head and the rod body is an arc-shaped transition to reduce stress and improve service life.

[0046] As one embodiment of this application, such as Figure 5 The first positioning plate 11 and the fixing base 30 are fixed by bolts, with the bolts installed at two locations: a first bolt 50 and a second bolt 60. The first bolt 50 is positioned near the clearance through hole, passes through the first positioning plate 11, protrudes, and is fixed to the fixing base 30. There are several first bolts 50 arranged in an array along the axis of the clearance through hole. The second bolt 60 is positioned near the outer periphery of the fixing base 30. A pad 40 is provided between the first positioning plate 11 and the fixing plate, with the height of the pad 40 being the same as the height of the protrusion. The second bolt 60 passes through the first positioning plate 11 and the pad 40 and is fixed to the fixing base 30. There are several second bolts 60 arranged in an array along the axis of the clearance through hole.

[0047] Meanwhile, in order to facilitate positioning during assembly, the first positioning plate 11 and the fixed seat 30 are positioned by pins. There are at least two pins, and the first positioning plate 11 and the protrusion have pin holes that can be aligned with each other. The pins pass through the first positioning plate 11 and are inserted into the protrusion to achieve positioning.

[0048] In summary, this application, through the structural design of the guiding device, aims to comb and guide copper wires. Multiple first positioning rods 13 extending from the first copper wire guiding assembly 10 guide the copper wires, and multiple first positioning rods 13 extending from the second copper wire guiding assembly 20 comb and guide the copper wires. The extension and retraction of the first positioning rods 13 are achieved through the cooperation of the first rotating plate 12, the first guide groove 112, the drive groove, the drive rod, and the first positioning rods 13, facilitating adjustment to accommodate copper wires of different diameters. Combing and guiding the copper wires before they enter the stator slot 110 ensures they can smoothly enter without getting stuck due to overlapping. Manual operation is no longer required, significantly improving production efficiency.

[0049] It should be emphasized that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model in any way. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A guiding device for embedding of copper wire of a stator coil of an electric machine at an end portion of one side of the stator of the electric machine, characterized in that, The utility model relates to a copper wire guiding assembly of motor stator, and belongs to the technical field of motor stator. The utility model discloses a copper wire guiding assembly of motor stator, and belongs to the technical field of motor stator. The utility model discloses a copper wire guiding assembly of motor stator, and belongs to the technical field of motor stator. The utility model discloses a copper wire guiding assembly of motor stator, and belongs to the technical field of motor stator.

2. The guiding device for embedding the copper wire of the motor stator coil according to claim 1, wherein, The utility model discloses a copper wire guiding assembly of motor stator, and belongs to the technical field of motor stator.

3. The apparatus of claim 1 wherein, The utility model discloses a copper wire guiding assembly of motor stator, and belongs to the technical field of motor stator.

4. The apparatus of claim 3, wherein the guide is formed of a material having a coefficient of friction that is greater than the coefficient of friction of the copper wire. The utility model discloses a copper wire guiding assembly of motor stator, and belongs to the technical field of motor stator.

5. The apparatus of claim 1 wherein, The utility model discloses a copper wire guiding assembly of motor stator, and belongs to the technical field of motor stator.

6. The apparatus of claim 1 wherein, The utility model discloses a copper wire guiding assembly of motor stator, and belongs to the technical field of motor stator.

7. The apparatus of claim 6 wherein, The utility model discloses a copper wire guiding assembly of motor stator, and belongs to the technical field of motor stator.

8. The apparatus according to claim 6 or 7, wherein the guide is formed by a plurality of guide grooves formed on the stator core and a plurality of guide protrusions formed on the coil. The utility model discloses a copper wire guiding assembly of motor stator, and belongs to the technical field of motor stator.

9. The apparatus of claim 1 wherein, The utility model discloses a copper wire guiding assembly of motor stator, and belongs to the technical field of motor stator.

10. The apparatus of claim 9 wherein, The utility model discloses a copper wire guiding assembly of motor stator, and belongs to the technical field of motor stator. The utility model discloses a copper wire guiding assembly of motor stator, and belongs to the technical field of motor stator. The utility model discloses a copper wire guiding assembly of motor stator, and belongs to the technical field of motor stator. The utility model discloses a copper wire guiding assembly of motor stator, and belongs to the technical field of motor stator. The utility model discloses a copper wire guiding assembly of motor stator, and belongs to the technical field of motor stator. The utility model discloses a copper wire guiding assembly of motor stator, and belongs to the technical field of motor stator. The utility model discloses a copper wire guiding assembly of motor stator, and belongs to the technical field of motor stator. The utility model discloses a copper wire guiding assembly of motor stator, and belongs to the technical field of motor stator. The utility model discloses a copper wire guiding assembly of motor stator, and belongs to the technical field of motor stator. The utility model discloses a copper wire guiding assembly of motor stator, and belongs to the technical field of motor stator. The utility model discloses a copper wire guiding assembly of motor stator, and belongs to the technical field of motor stator. The utility model discloses a copper wire guiding assembly of motor stator, and belongs to the technical field of motor stator. The utility model discloses a copper wire guiding assembly of motor stator, and belongs to the technical field of motor stator. The utility model discloses a copper wire guiding assembly of motor stator, and belongs to the technical field of motor stator. 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The utility model discloses a copper wire guiding assembly of motor stator, and belongs to the technical field of motor stator. The utility model discloses a copper wire guiding assembly of motor stator, and belongs to the technical field of motor stator. The utility model discloses a copper wire guiding assembly of motor stator, and belongs to the technical field of motor stator. The utility model discloses a copper wire guiding assembly of motor stator, and belongs to the technical field of motor stator. The utility model discloses a copper wire guiding assembly of motor stator, and belongs to the technical field of motor stator. The utility model discloses a copper wire guiding assembly of motor stator, and belongs to the technical field of motor stator. The utility model discloses a copper wire guiding assembly of motor stator, and belongs to the technical field of motor stator. 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