A thread inserting mechanism and a thread inserting method

Abstract

The application discloses a kind of embedding mechanism and embedding method, comprising: first part;First part and second part are spaced apart along the axial direction and are connected to form installation space;Rotary part is defined in installation space, and for relative installation space along the circumferential direction rotates, first part, second part and rotary part jointly define embedding space;Each embedding block is connected with rotary part, and with first part in radially slidable manner, rotary part is used to rotate along the circumferential direction to drive embedding block to move in embedding space, so that embedding block moves along the radial direction relative to first part;Multiple embedding guide bars are spaced apart along the circumferential direction, each embedding guide bar extends along the radial direction, and one end is connected with second part, so that part embedding guide bar is located in embedding space, adjacent two embedding guide bars form lower wire slot, and lower wire slot is used to set subwinding set. The application can realize embedding automation, improve production efficiency, and ensure the consistency of product quality.

Description

Technical Field

[0001] This invention relates to the field of electric motors, and in particular to a winding mechanism and winding method. Background Technology

[0002] Axial motors, also known as axial flux motors, differ from ordinary motors in that their magnetic flux direction is axial, the current-carrying system is placed radially, and the stator and rotor cores have a disc structure, hence they are also called "disc motors." Axial flux motors are characterized by their small size, light weight, high efficiency, and high torque density. They have strong application advantages in many scenarios with high requirements for motor installation dimensions (especially axial dimensions) and power density, and are currently used in elevator drives, high-performance electric vehicles, and off-highway vehicles.

[0003] However, due to the complexity of its manufacturing process and the high cost of materials, axial flux motors have not yet achieved large-scale industrial application. Among these issues, the winding of the stator winding of the axial flux motor is one of the main problems restricting the mass production of the motor. Due to factors such as complex winding design, high slot fill factor, and lack of mature automated equipment, the current market uses manual winding to produce the stator. This method heavily relies on the experience and skills of the operators, making it impossible to guarantee the quality and consistency of the products. At the same time, the operation is complex and the cycle time is long. Summary of the Invention

[0004] The purpose of this invention is to solve the problem that current methods for automating the winding of axial flux motors are not feasible. This invention provides a winding mechanism and method that enables automated winding, improves production efficiency, and ensures consistent product quality.

[0005] To address the aforementioned technical problems, embodiments of the present invention disclose a wire-insertion mechanism, comprising:

[0006] Part One;

[0007] The second part is provided with the first part and the second part spaced apart along the axial direction and connected to form an installation space;

[0008] A rotating portion, the rotating portion being defined in the mounting space and for rotating circumferentially relative to the mounting space, the first portion, the second portion and the rotating portion together defining a wiring space;

[0009] Multiple wire-insertion blocks, each of which is connected to the rotating part and is slidably connected to the first part in a radial direction, the rotating part being used to rotate in the circumferential direction to drive the wire-insertion blocks to move within the wire-insertion space, so that the wire-insertion blocks move radially relative to the first part;

[0010] Multiple winding guides are arranged at intervals along the circumferential direction. Each winding guide extends radially and is connected at one end to the second part, so that a portion of the winding guide is located in the winding space. Two adjacent winding guides form a lower wire groove, which is used to fit the stator winding. Along the axial direction, each winding guide is used to cover the stator core, so that the groove opening width of the lower wire groove is smaller than the groove opening width of the wire groove of the stator core.

[0011] The winding block is slidably connected to the winding guide bar along the lower wire groove to push the stator winding so that the stator winding is fitted into the wire groove of the stator core.

[0012] Using the above technical solution, workers or automated equipment (such as robots) place multiple sets of stator windings into the lower slots. That is, part of the stator winding passes through the lower slot and is located below it, while another part is located above it. The stator core is then manually or automatically placed in the center of the winding space. At this time, the rotating part rotates circumferentially, causing the winding block to move radially relative to the first part, i.e., the winding block moves along the lower slot. The slot opening width of the lower slot is smaller than the slot opening width of the stator core slot, so that the thickness of the stator winding within the lower slot can be limited by the lower slot to be smaller than the slot opening width of the stator core slot. This ensures that the stator winding is successfully placed into the stator core slot and also reduces the difficulty of placement.

[0013] The winding guide bars are spaced apart to form a lower wire groove, which limits the movement trajectory of the winding block. Thus, when the winding block moves along the limited trajectory of the lower wire groove, it can push the stator winding in the lower wire groove to move, so that the stator winding is fitted into the wire groove of the stator core.

[0014] Meanwhile, the first part and the second part are spaced apart along the axial direction and connected to form an installation space. The rotating part is confined within the installation space, which ensures that the rotating part only rotates in the circumferential direction and restricts its movement in the axial direction.

[0015] With the above-mentioned winding mechanism, the worker only needs to place the stator winding in the lower slot, and then the rotating part can drive the winding block to move so that the stator winding is placed in the slot of the stator core, that is, the stator winding is embedded in the slot of the stator core, thus completing the winding of the stator winding, realizing automation, improving efficiency and product quality, and avoiding the uncertainty and inefficiency caused by manual winding.

[0016] According to another specific embodiment of the present invention, an embodiment of the present invention discloses a winding mechanism, wherein each winding guide bar has a groove on the side away from the winding block, the shape of the groove is adapted to the shape of the stator core, and is used to accommodate the stator core.

[0017] Using the above technical solution, the groove on the side of each winding guide away from the winding block is covered by the stator core. That is, the stator core is accommodated in the groove. In this way, it can be ensured that the groove width of the lower wire slot is smaller than the groove width of the stator core and is directly opposite the stator core groove. This allows the thickness of the stator winding in the lower wire slot to be limited by the lower wire slot to be smaller than the groove width of the stator core groove. In this way, it can be ensured that the stator winding is successfully fitted into the stator core groove.

[0018] At the same time, the shape of the groove matches the shape of the stator core, which ensures that the winding conductor can be stably fitted onto the stator core, preventing it from shaking and affecting the spacing between the winding conductors, thereby changing the slot width and position of the lower slot, causing the stator winding to fail to be successfully fitted onto the slot.

[0019] According to another specific embodiment of the present invention, an embedding mechanism is disclosed, the embedding mechanism further comprising a plurality of storage strips corresponding one-to-one with the embedding guide strips, the plurality of storage strips being spaced apart along the circumferential direction to form storage grooves, the storage grooves being used to store slot cover paper, each of the storage strips being located in the embedding space and extending radially to one end near the groove to collectively enclose a placement space, the placement space being used to place a stator core, the groove being located in the placement space, along the axial direction with the first portion facing the second portion, each of the storage strips being located below the corresponding embedding guide strip, so that the storage groove is located below the lower wire groove.

[0020] Using the above technical solution, the storage strip extends radially to one end near the groove. That is, the extension length of the storage strip is less than the extension length of the inlay guide strip, and the length of the storage groove formed by two adjacent storage guide strips is less than the length of the lower groove formed by two adjacent inlay guide strips.

[0021] Furthermore, along the axial direction and with the first part facing the second part, each storage bar is located below its corresponding winding guide bar, so that the storage groove is located below the lower wire groove and is axially aligned with the lower wire groove, so that the wire groove of the stator core opposite to the lower wire groove can be axially aligned with the slot cover paper located in the storage groove, so that the slot cover paper finally corresponds one-to-one with the wire groove of the stator core and can be pushed into the wire groove of the stator core.

[0022] According to another specific embodiment of the present invention, an embodiment of the present invention discloses a winding mechanism, each of the winding blocks including a first guide rib, the first guide rib being slidably connected to the lower winding groove in the radial direction, the first guide rib extending to the lower winding groove in the axial direction such that the bottom surface of the first guide rib is located above a portion of the stator winding in the direction of the first portion facing the second portion in the axial direction.

[0023] Using the above technical solution, the first guide rib is connected to the lower wire slot in a radially slidable manner, so that the winding block can be connected to the lower wire slot in a radially slidable manner, so that the winding block can move along the lower wire slot under the drive of the rotating part, thereby driving the stator winding in the lower wire slot to move.

[0024] Simultaneously, along the axial direction, the bottom surface of the first guide rib is located above part of the stator winding. Thus, when the winding block pushes the stator winding to move into the lower slot formed by two adjacent winding guide bars with grooves, the stator winding below the winding guide bars will be stuck after hitting the stator core and will not be able to continue moving radially, that is, it will not be able to continue moving along the lower slot. At this time, the winding block continues to move along the lower slot formed by two adjacent winding guide bars with grooves to push the stator winding above the winding guide bars to continue moving. In this way, the stator winding is flipped, changing from the state of being fitted with the lower slot along the axial direction to the state of being fitted with the slot of the stator core radially, that is, successfully fitted into the slot of the stator core.

[0025] If, during this process, the stator winding that has been embedded in the slot of the stator core is released from the axial pressure of the bottom surface of the first guide rib, it may bounce out of the slot of the stator core due to the elasticity of the winding itself, causing the winding to fail to be successfully embedded in the slot of the stator core.

[0026] According to another specific embodiment of the present invention, an embodiment of the present invention discloses a wire-insertion mechanism, each of the wire-insertion blocks further comprising a paper pusher block, the paper pusher block extending along the axial direction to be opposite to the storage groove, the paper pusher block being for movement along the storage groove, in the radial direction and close to the placement space, the paper pusher block being arranged radially spaced from the first guide rib, and the paper pusher block being located behind the first guide rib.

[0027] Using the above technical solution, the paper pusher block and the first guide rib are arranged radially at intervals and located behind the first guide rib. In this way, when the winding block moves along the lower wire groove, the first guide rib will first contact the stator winding in the lower wire groove and push the stator winding to move. When the stator winding moves into the wire groove fitted in the stator core, the paper pusher block will then push the slot cover paper in the storage groove into the wire groove of the stator core. Due to the sequential relationship of this process, the slot cover paper will cover the stator winding that was pushed into the wire groove first, which will protect the stator winding and prevent the stator winding from rebounding.

[0028] According to another specific embodiment of the present invention, an embedding mechanism is disclosed, wherein each of the storage strips includes a body portion and a first extension portion. Along the axial direction, one end of the body portion is connected to the embedding guide strip, and the other end is connected to the first extension portion. The first extension portion extends circumferentially and protrudes from both sides of the body portion to form a semi-storage groove with the body portion, and forms the storage groove with the semi-storage groove of the adjacent storage strip. Two adjacent first extension portions are respectively used to abut against the two ends of the slot cover paper.

[0029] Using the above technical solution, the first extension of one of the storage bars extends circumferentially and protrudes from both sides of the main body to form a semi-storage groove with the main body. Similarly, a storage bar adjacent to the storage bar has the same structure to form a complete storage groove. In this way, the two ends of the slot cover paper can abut against the two adjacent first extensions and form a bend in the storage groove to form a protective space. When the pusher pushes the slot cover paper into the slot of the stator core, the stator winding can be located in the protective space, thereby achieving the design purpose of the slot cover paper.

[0030] According to another specific embodiment of the present invention, an inlay mechanism is disclosed, wherein the paper pusher includes a paper pusher portion and a second extension portion, the second extension portion extends along the axial direction, one end of the second extension portion is connected to the inlay block and the other end is connected to the paper pusher portion, the shape of the paper pusher portion is adapted to the shape of the storage groove, and the paper pusher portion is disposed opposite to the storage groove along the radial direction, the paper pusher portion being used to move along the storage groove.

[0031] Using the above technical solution, the shape of the paper pusher is adapted to the shape of the storage groove, so that the paper pusher can move along the storage groove and at the same time make maximum contact with the slot cover paper in the storage groove, providing it with sufficient thrust to help the slot cover paper move successfully along the storage groove and be pushed into the slot of the stator core.

[0032] According to another specific embodiment of the present invention, an embedding mechanism is disclosed, which further includes a plurality of pusher bars and pusher blocks. The plurality of pusher bars are arranged at intervals along the circumferential direction, and the two closest pusher bars form a pusher groove. Each pusher bar extends radially and along the axial direction with the second portion facing the first portion. Each pusher bar is located above the embedding guide bar, and a portion of the pusher bar is located between two embedding guide bars. Each pusher block extends radially and one end is connected to the rotating part. The pusher block is slidably connected to the first portion in the radial direction and is slidably connected to the pusher groove in the radial direction. The rotating part is used to drive the pusher block and the embedding block to move synchronously in the radial direction.

[0033] Using the above technical solution, multiple push wire guides are arranged at intervals along the circumference, and the two closest push wire guides form a push wire groove. The push wire block is connected to the push wire groove in a radially slidable manner. The push wire groove limits the movement of the push wire block and allows the push wire block to slide radially relative to the push wire guides when the rotating part rotates in the circumference.

[0034] Each pusher block extends radially and is connected at one end to the rotating part. The pusher block is connected to the first part in a radially slidable manner, so that when the rotating part rotates in the circumferential direction, it can drive the pusher block and the insert block to move synchronously.

[0035] According to another specific embodiment of the present invention, an embodiment of the present invention discloses a wire-inserting mechanism, wherein each of the wire-pushing blocks includes a second guide rib, the second guide rib being slidably connected to the wire-pushing groove in a radial manner, and the second guide rib extending to the wire-pushing groove in an axial direction.

[0036] Using the above technical solution, the second guide rib is connected to the pusher groove in a radially slidable manner, so that the pusher block can be connected to the pusher groove in a radially slidable manner, so that the pusher block can move along the pusher groove under the drive of the rotating part.

[0037] According to another specific embodiment of the present invention, an embodiment of the present invention discloses a winding mechanism, the winding mechanism further comprising a flip hook, the flip hook being rotatably connected to the pusher block, such that the flip hook rotates relative to the pusher block to be located between the two sets of stator windings, and abuts against one set of stator windings to separate it from the other set of stator windings.

[0038] With the above technical solution, after the stator winding is fitted into the lower slot, the winding block abuts against both ends of the stator winding. The pusher bar is located above the winding bar, and part of the pusher bar is located between the two winding bars, that is, the pusher block is located between the two winding blocks. In other words, the pusher block abuts against the non-end positions of the stator winding. The hook can rotate relative to the pusher block so that the hook is located between the two sets of stator windings. The hook abuts against the non-end positions of one set of stator windings to separate the set of stator windings from the other set of stator windings, preventing phenomena such as wire clamping and bulging between the set of stator windings and the other set of stator windings.

[0039] According to another specific embodiment of the present invention, an embodiment of the present invention discloses a winding mechanism, wherein the hook includes a vertical portion extending along the axial direction and a horizontal portion extending along the radial direction. One end of the vertical portion is rotatably connected to the pusher block, and the other end is connected to the horizontal portion. The hook is rotatable relative to the pusher block so that the horizontal portion rotates to extend along the axial direction and the vertical portion rotates to extend along the radial direction. At this time, the horizontal portion is located between two sets of stator windings and abuts against one set of stator windings to separate it from the other set of stator windings. The pusher block abuts against the other set of stator windings.

[0040] Using the above technical solution, the rotating part drives the pusher block and the insert block to move radially synchronously. When the insert block pushes the stator winding in the lower slot into the slot of the stator core, two sets of stator windings may overlap in the axial direction, resulting in phenomena such as wire clamping and bulging. At this time, the insert block has moved to the end of the lower slot and cannot continue to move forward, so it cannot continue to push the stator winding to separate it from other stator windings.

[0041] Therefore, in this application, after the stator winding is fitted into the lower slot, the hook is rotated relative to the pusher block, so that the horizontal part of the pusher block rotates to extend axially and is located between two sets of stator windings. At this time, the horizontal part abuts against one set of stator windings, separating it from the other set of stator windings. The pusher block abuts against the other set of stator windings, and multiple insert blocks abut against the two ends of the two sets of stator windings respectively. As the pusher block is driven to move along the pusher slot, the pusher block and the horizontal part can assist the insert blocks in pushing the stator windings radially. During this process, since the horizontal part is always located between the two sets of stator windings, the two sets of stator windings are always in a separated state during this process, and there will be no problem of wire clamping.

[0042] As the winding block continues to move along the lower groove formed by two adjacent winding guides with grooves, pushing the two sets of stator windings above the winding guides to continue moving, the hook does not contact the stator windings, allowing the stator windings to successfully flip, changing from a state of being fitted with the lower groove along the axial direction to a state of being fitted with the groove of the stator core radially, that is, successfully fitted with the groove of the stator core. Since the two sets of stator windings have been separated before flipping and have a certain gap, this gap is always maintained after flipping, thereby avoiding phenomena such as wire clamping and bulging of the two sets of stator windings.

[0043] According to another specific embodiment of the present invention, an embodiment of the present invention discloses a wire-inserting mechanism, the wire-inserting mechanism further includes a fixing part, one end of the fixing part is connected to the wire-inserting block, and the other end is connected to the first part.

[0044] By adopting the above technical solution, the movement of the wire-inserting block along the axial direction can be limited by setting a fixing part.

[0045] According to another specific embodiment of the present invention, an embodiment of the present invention discloses a winding mechanism, wherein the rotating part includes a second connecting part that extends out of the mounting space to connect with an external device, the external device being used to drive the rotating part to rotate circumferentially.

[0046] Using the above technical solution, the second connecting part extends out of the installation space to connect with external equipment (such as a motor), so that the external equipment can drive the rotating part to rotate by connecting the second connecting part.

[0047] According to another specific embodiment of the present invention, an inlay mechanism is disclosed. The rotating part is provided with a plurality of first inclined grooves, which are spaced apart along the circumferential direction. One end of the inlay block is slidably connected to the first inclined groove. The first part includes a plurality of second connecting grooves, which are spaced apart along the circumferential direction and extend radially. A portion of the inlay block is slidably connected to the second connecting groove. One end of the pusher block is slidably connected to the first inclined groove, and a portion of the pusher block is slidably connected to the second connecting groove.

[0048] The present invention also discloses a wire-insertion method, employing the wire-insertion mechanism described in any of the above embodiments, comprising:

[0049] Provide multiple sets of the stator windings, and respectively sleeve the multiple sets of stator windings in the lower wire slot;

[0050] Provide the stator core and place the stator core in the placement space;

[0051] The rotating part drives the plurality of wire-inserting blocks to move along the lower wire groove;

[0052] The plurality of insert blocks push the plurality of stator windings to fit into the slots of the stator core.

[0053] According to another specific embodiment of the present invention, an embodiment of the present invention discloses a winding method, which includes, after the plurality of sets of stator windings are respectively fitted into the lower wire slot: the hook rotates relative to the pusher block to rotate the horizontal part to extend along the axial direction, at which time the horizontal part is located between two sets of the stator windings and abuts against one set of the stator windings, and the vertical part rotates to extend along the radial direction.

[0054] According to another specific embodiment of the present invention, an embodiment of the present invention discloses a wiring method comprising, before providing the stator core:

[0055] Along the axial direction, a groove bottom paper is placed at the bottom of the groove, and a protective tooth is placed at one end of the groove bottom paper.

[0056] By adopting the above technical solution and setting up protective teeth, the phenomenon of the bottom paper of the groove being reversed during the wire embedding process can be avoided.

[0057] According to another specific embodiment of the present invention, an embodiment of the present invention discloses a wire-inserting method, which includes: placing slot cover paper in a storage groove before the rotating part drives the plurality of wire-inserting blocks to move along the lower wire groove; while the rotating part drives the plurality of wire-inserting blocks to move along the lower wire groove, the method includes: the rotating part drives a paper-pushing block to move along the storage groove, and the rotating part drives a wire-pushing block to move along a wire-pushing groove; after the plurality of wire-inserting blocks push the plurality of sets of stator windings to be sleeved in the wire groove of the stator core, the method includes: the paper-pushing block pushes the slot cover paper to cover the plurality of sets of stator windings. Attached Figure Description

[0058] Figure 1 This invention illustrates a three-dimensional representation of the wire-insertion mechanism provided in an embodiment of the invention. Figure 1 The stator core has already been assembled in it;

[0059] Figure 1A Show Figure 1 Enlarged view of the inset space and placement space;

[0060] Figure 2 This invention illustrates a three-dimensional representation of the wire-insertion mechanism provided in an embodiment of the invention. Figure 2 The stator core is already assembled therein, but the second part and the rotating part are not shown.

[0061] Figure 3 This invention illustrates a three-dimensional representation of the wire-insertion mechanism provided in an embodiment of the invention. Figure 3The stator core is not assembled and the first part is not shown.

[0062] Figure 3A Show Figure 2 The second connecting slot and Figure 3 A schematic diagram showing the positional relationship between the projections of the first inclined groove in the axial direction;

[0063] Figure 4 The diagram illustrates the cooperation relationship between a set of winding guide bars, push guide bars, winding blocks, and push blocks in a winding mechanism provided by an embodiment of the present invention, wherein a stator core is assembled.

[0064] Figure 5 This diagram shows an enlarged view of the positional relationship of one set of winding guides and push guides in the winding mechanism provided in an embodiment of the present invention, wherein a stator core is assembled.

[0065] Figure 5A Show Figure 5 Enlarged view of the connection between the in-line conductor bar and the stator core;

[0066] Figure 6 A perspective view of the inlaid conductor provided in an embodiment of the present invention is shown;

[0067] Figure 7 A perspective view of the wire-insertion block provided in an embodiment of the present invention is shown;

[0068] Figure 8 A perspective view of the push-wire block provided in an embodiment of the present invention is shown;

[0069] Figure 9 This diagram illustrates the positions of the storage strip, paper pusher, and inlay guide strip provided in an embodiment of the present invention.

[0070] Figure 10 This diagram shows the positions of the paper pusher block and the first guide rib provided in an embodiment of the present invention.

[0071] Figure 11 A diagram showing the positional relationship between two adjacent storage bars provided in an embodiment of the present invention is shown, including a schematic diagram of the slot cover paper being assembled.

[0072] Figure 11A Show Figure 11 A schematic diagram of the shape of the storage groove formed by two adjacent storage bars;

[0073] Figure 12 A perspective view of the paper pusher block provided in an embodiment of the present invention is shown;

[0074] Figure 13 This diagram illustrates the positional relationship between the pusher block and the pusher guide, and between the embedding block and the embedding guide, provided in an embodiment of the present invention.

[0075] Figure 14 This diagram illustrates the positional relationship between the pusher block, pusher bar, winding block, winding bar, and stator core provided in an embodiment of the present invention.

[0076] Figure 15 This diagram illustrates the positional relationship between the two closest push-line guides provided in an embodiment of the present invention.

[0077] In the attached drawings, the reference numerals are as follows: 100, first annular disk; 101, mounting space; 102, through hole; 103, second connecting groove; 200, second annular disk; 202, wire embedding space; 203, placement space; 300, rotating part; 301, second connecting part; 302, first inclined groove; 400, wire embedding block; 401, first guide rib; 402, abutment groove; 403, paper pusher block; 404, paper pusher part; 405, second extension part; 406, fixing part; 500, wire embedding guide strip; 501. Lower wire groove; 502. Groove; 503. Storage bar; 504. Storage groove; 5041. Semi-storage groove; 505. Main body; 506. First extension; 600. Stator core; 601. Wire groove; 602. Stator winding; 603. Protective tooth; 700. Push wire guide bar; 701. Push wire groove; 800. Push wire block; 801. Second guide rib; 802. Rotation space; 803. Flip hook; 804. Vertical part; 805. Horizontal part; 900. Groove cover paper. Detailed Implementation

[0078] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Although the description of the present invention is presented in conjunction with preferred embodiments, this does not mean that the features of the invention are limited to these embodiments. On the contrary, the purpose of describing the invention in conjunction with embodiments is to cover other options or modifications that may be derived based on the claims of the present invention. To provide a deep understanding of the invention, many specific details will be included in the following description. The invention may also be implemented without using these details. Furthermore, to avoid confusion or obscuring the focus of the invention, some specific details will be omitted in the description. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of the present invention can be combined with each other.

[0079] It should be noted that in this specification, similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0080] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the product of the invention is usually placed in during use. They are only for the convenience of describing the present invention and simplifying the description, and 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. Therefore, they should not be construed as limiting the present invention.

[0081] The terms “first”, “second”, etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0082] In the description of this embodiment, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "connected," and "linked" 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 embodiment based on the specific circumstances.

[0083] To make the objectives, technical solutions, and advantages of the present invention clearer, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0084] This application discloses a winding mechanism for automatically winding an axial flux motor, applicable to axial flux motors with different winding types. This application uses a distributed winding type axial flux motor as an example for detailed explanation. Specifically, the axial flux motor includes a stator core and stator windings. The stator core includes multiple slots spaced circumferentially. The winding mechanism is used to fit the stator windings into the slots. The explanation will be based on an example of a motor with 45 slots, 3 turns, and 15 sets of stator windings.

[0085] For example, refer to Figures 1 to 3 The winding mechanism includes: a first part (i.e., the first annular disk 100 described later), a second part (i.e., the second annular disk 200 described later), a rotating part 300, twenty winding blocks 400, and thirty winding guides 500. The first part is the first annular disk 100, which is a hollow disk, and the second part is the second annular disk 200, which is also a hollow disk. The first annular disk 100 and the second annular disk 200 are axially (i.e.,...) Figure 1The rotating parts 300 are spaced apart and connected in the X direction (as shown) to form an annular mounting space 101; the rotating parts 300 are confined within the mounting space 101, that is, the axial movement of the rotating parts 300 is restricted, i.e., they can only move within the mounting space 101. The rotating parts 300 are used relative to the mounting space 101 in the circumferential direction (i.e.,... Figure 1 When rotated in direction A, the first annular disk 100, the second annular disk 200, and the rotating part 300 together define the inlay space 202.

[0086] It should be noted that the specific number of the winding blocks 400 and winding guides 500 in this application embodiment is not limited. The specific number of the winding blocks 400 and winding guides 500 is determined according to the number of slots, turns, winding type, etc. of the motor. Similarly, the extension length of each winding block 400 is not limited in this application embodiment. The extension lengths of the four winding blocks 400 can be different, as shown in this application embodiment, or the extension lengths of the four winding blocks 400 in a group can be the same in pairs, or the extension lengths of the four winding blocks 400 can be set to be the same, etc. The specific choice depends on the type of motor.

[0087] Specifically, such as Figure 4 The extension lengths of the winding blocks 400 numbered 1-4 shown are all different. At the same time, the structure of the contact position between the end of these four winding blocks 400 and the end of the stator winding is also different (i.e., the abutment groove described later). The specific extension length and the structure of the abutment groove are determined according to the size and position of the stator winding in the motor. In other words, the structure of the abutment groove can also be the same.

[0088] For example, each wire-insertion block 400 is connected to the rotating part 300 and is radially slidable to the first annular disk 100. The rotating part 300 is used to rotate circumferentially to drive the wire-insertion block 400 to move within the wire-insertion space 202, so that the wire-insertion block 400 moves radially (i.e., ...) relative to the first annular disk 100. Figure 1 The thirty wire guide bars 500 move in the circumferential direction (i.e., the Y direction shown); Figure 1 As shown in direction A, the wire guides are spaced apart, and each wire guide 500 is arranged radially (i.e., Figure 1 Extending in the Y direction (as shown), and with one end connected to the second annular disk 200, so that part of the wire guide 500 is located in the wire space 202.

[0089] For example, two adjacent wire guides 500 form a lower wire groove 501. Figure 5 As can be seen, the lower slot 501 is used to house the set sub-winding 602, for example in... Figure 1AIn the motor, one end of the stator winding 602 passes through one of the lower wire slots 501, and the other end passes through the lower wire slots 501 that are spaced four wire guide bars 500 apart from it. That is to say, depending on the type of motor winding, the specific position of the lower wire slots 501 through which the stator winding 602 passes is also different. For concentrated windings, the stator winding can also pass through two adjacent lower wire slots 501.

[0090] For ease of demonstration, stator winding 602, Figure 1A The stator winding 602 is raised by a certain length along the axial direction away from the wire guide bar 500. In practical applications, after the stator winding 602 is embedded in the lower wire slot 501, the two ends of the stator winding 602 are abutted by the wire guide block 400, and the bent part of the stator winding 602 (i.e. the non-end position) is abutted by the hook or push block described later.

[0091] For example, combined Figure 5 and Figure 5A Each wire guide 500 is used to cover the stator core 600 so that the slot width of the lower wire slot 501 is smaller than the slot width of the wire slot 601 of the stator core (i.e., Figure 5A (where L1 is less than L2).

[0092] For example, the winding block 400 is slidably connected to the winding guide bar 500 along the lower wire groove 501 to push the stator winding 602 so that the stator winding 602 is fitted into the wire groove 601 of the stator core 600.

[0093] Using the above technical solution, workers or automated equipment place multiple sets of stator windings 602 into the lower slot 501. That is, part of the stator winding passes through the lower slot 501 and is located below the lower slot 501, while another part is located above the lower slot 501. The stator core 600 is then manually or automatically placed in the center of the winding space 202. At this time, the rotating part 300 rotates circumferentially, causing the winding block 400 to move radially relative to the first annular disk 100. That is, the winding block 400 moves along the lower slot 501, and the stator windings 602 are placed inside the lower slot 501. Thus, when the winding block 400 moves along the lower slot 501, it can push the stator windings 602 in the lower slot 501 to move, so that the stator windings 602 are placed in the slot 601 of the stator core 600.

[0094] Meanwhile, the first annular disk 100 and the second annular disk 200 are connected axially to form an installation space, and the rotating part 300 is confined within the installation space. This ensures that the rotating part 300 rotates only in the circumferential direction and restricts its movement in the axial direction.

[0095] With the above-mentioned winding mechanism, the worker only needs to place the stator winding 602 into the lower slot 501, and then the rotating part 300 can drive the winding block 400 to move so that the stator winding 602 is placed into the slot 601 of the stator core 600, thus completing the winding of the stator winding 602. This achieves automation, improves efficiency and product quality, and avoids the uncertainty and inefficiency caused by manual winding.

[0096] For example, refer to Figure 1 and Figure 3 The winding mechanism also includes a fixing part 406, which is L-shaped, but not limited to this; it can also be other shapes, such as T-shaped or arc-shaped. One end of the fixing part 406 is slidably connected to two adjacent winding blocks 400, and the other end is connected to the first annular disk 100, allowing the winding blocks 400 to be axially (i.e., Figure 1 The motion in the X direction (as shown) is limited.

[0097] For example, refer to Figure 2 and Figure 3 The first annular disk 100 is provided with a plurality of through holes 102, the plurality of through holes 102 being circumferentially (i.e., Figure 2 As shown in direction A, the rotating part 300 includes two second connecting parts 301, which are arranged radially apart. The two second connecting parts 301 extend out of the mounting space 101 respectively. One of the second connecting parts 301 extends out of the mounting space 101 and connects to an external device (e.g., a motor), so that the external device (e.g., a motor) can drive the rotating part 300 to rotate circumferentially by connecting the second connecting part 301.

[0098] It should be noted that the shape, size and number of through holes 102 are not limited in the embodiments of this application. They can be twenty, twenty-five, twenty-eight, etc., or they can be circular, triangular or other shapes, as in the embodiments of this application.

[0099] For example, the rotating part 300 is provided with thirty first inclined grooves 302, but the number is not limited in the embodiments of this application, and can also be twenty-five, thirty-five, etc., with the thirty first inclined grooves 302 arranged circumferentially (i.e. Figure 3 As shown in direction A, the wire inserts are spaced apart, with one end of each insert block 400 slidably connected to the first inclined groove 302, and one end of each pusher block 800 described later is slidably connected to the first inclined groove 302.

[0100] Specifically, refer to Figure 3Each wire insert 400 has one end away from the fixed part 406 that is slidably connected to the first inclined groove 302 via a bearing, and each wire pusher 800 has one end away from the fixed part 406 that is slidably connected to the first inclined groove 302 via a bearing. When the rotating part 300 rotates, its rotational motion is transmitted through the first inclined groove 302 and the bearing and converted into radial motion of the wire insert 400 and the wire pusher 800.

[0101] For example, refer to Figure 2 The first annular disk 100 includes thirty second connecting slots 103, but the number is not limited in this embodiment; it can also be twenty-five, thirty-five, etc. The thirty second connecting slots 103 are arranged circumferentially (i.e., Figure 2 As shown in direction A, they are spaced apart and arranged radially (i.e., Figure 2 It extends in the Y direction (as shown) and connects with the aforementioned through hole 102, in combination with... Figure 7 and Figure 8 The portion of the wire insert 400 (excluding the portion of the first guide rib 401 described later) is slidably connected to it along the second connecting groove 103, and the portion of the pusher block 800 (excluding the portion of the second guide rib 801 described later) is slidably connected to it along the second connecting groove 103.

[0102] The first inclined groove 302 is inclined along the axial direction, and its projection is at an angle α to the projection of the second connecting groove 103. Figure 3A As can be seen, this converts the circumferential motion of the rotating part 300 into the radial motion of the winding block 400 and the pusher block 800. Specifically, one end of the winding block 400 is connected to the first inclined groove 302. When the rotating part 300 rotates circumferentially, it provides a radial driving force to one end of the winding block 400, causing it to move radially. Similarly, one end of the pusher block 800 is connected to the first inclined groove 302. When the rotating part 300 rotates circumferentially, it provides a radial driving force to one end of the pusher block 800, causing it to move radially.

[0103] For example, refer to Figure 5 , Figure 5A and Figure 6 Along the axial direction, each wire guide 500 has a groove 502 on the side away from the wire block 400. Figure 6 As can be seen, groove 502 is used to accommodate stator core 600. Figure 5A visible).

[0104] Each wire guide 500 has a groove 502 on the side away from the wire guide block 400 that accommodates the stator core 600. This ensures that the width of the lower wire slot 501 is smaller than the width of the wire slot 601 of the stator core 600 (i.e.,...). Figure 5A L1 is less than Figure 5AThe lower slot 501 is aligned with the slot 601 of the stator core 600 along the axial direction, so that the thickness of the stator winding 602 in the lower slot 501 can be limited by the lower slot 501 to be less than the slot width of the slot 601 of the stator core 600. In this way, it can be ensured that the stator winding 602 is successfully fitted into the slot 601 of the stator core 600, and the difficulty of fitting is also reduced.

[0105] Meanwhile, the shape of the groove 502 of the winding guide 500 is adapted to the shape of the stator core 600, both being trapezoidal, but not limited to this. The specific shape is selected according to the shape of the stator core 600 so that the winding guide 500 can be stably fitted onto the stator core 600, preventing it from shaking and affecting the spacing between the winding guides 500, thereby changing the slot width of the lower wire slot 501 and changing the position of the lower wire slot 501, causing the stator winding to be unable to be fitted onto the wire slot 601.

[0106] For example, refer to Figure 9 and Figure 10 and combined Figure 1 The winding mechanism also includes multiple storage bars 503 corresponding one-to-one with the winding guide bars 500, along the axial direction and with the first annular disk 100 facing the second annular disk 200 (i.e., Figure 10 As shown in direction b), each storage bar 503 is located at the bottom of its corresponding embedded guide bar 500, and the thirty storage bars 503 are arranged circumferentially (i.e., in the direction b). Figure 9 As shown in direction A, the storage strips 503 are spaced apart, and a storage groove 504 is provided between two adjacent storage strips 503. Thus, the storage groove 504 corresponds one-to-one with the lower wire groove 501, directly opposite and below the lower wire groove 501. The storage groove 504 is used to store the cover paper 900. Figure 11 visible).

[0107] Storage strip 503 is located in the wiring space 202 ( Figure 1 (As can be seen), and extends radially to one end near the groove 502 ( Figure 6 As can be seen, they together form a placement space of 203. Figure 1 As can be seen, the groove 502 is also located within the placement space 203, which is used to place the stator core 600 mentioned above. That is, along the axial direction, the projection of the storage bar 503 and the projection of the groove 502 do not contact each other and have a certain distance.

[0108] In other words, the extension length of the storage bar 503 is less than the extension length of the winding guide bar 500. That is, the length of the storage groove 504 formed by two adjacent storage guide bars is less than the length of the lower wire groove 501 formed by two adjacent winding guide bars 500. In other words, the lower wire groove 501 is closer to the stator core 600 than the storage groove 504.

[0109] The storage groove 504, corresponding to the lower wire groove 501 with the wire insert block 400, is also provided with a groove cover paper 900. Figure 11 visible).

[0110] For example, refer to Figure 10 and Figure 11 Each storage bar 503 includes a body portion 505 and a first extension portion 506. Along the axial direction, one end of the body portion 505 is connected to the inlaid guide bar 500, and the opposite end is connected to the first extension portion 506. The first extension portion 506 extends circumferentially and protrudes from both sides of the body portion 505 to form a semi-storage recess 5041 with the body portion 505. Figure 11A As can be seen, the storage groove 504 is formed by the semi-storage groove of the adjacent storage strip 503, and the two adjacent first extensions 506 are respectively used to abut the two ends of the groove cover paper 900.

[0111] In other words, the first extension 506 of one of the storage bars 503 extends circumferentially and protrudes twice from the body 505 to form a semi-storage groove 5041 with the body 505. Similarly, the storage bar 503 adjacent to the storage bar 503 has the same structure, thus forming a complete storage groove 504. In this way, the two ends of the slot cover paper 900 can abut against the two adjacent first extensions 506 and form a bend in the storage groove 504 to form a protective space. When the pusher block 403 described later pushes the slot cover paper 900 into the slot 601 of the stator core 600, the stator winding can be located in the protective space, thereby achieving the design purpose of the slot cover paper 900.

[0112] For example, refer to Figure 5 and Figure 7 Each winding block 400 includes a first guide rib 401, which is slidably connected to the lower winding groove 501 in a radial manner. A radially slidable abutment groove 402 may be provided at the front end of the winding block 400, which abuts against the end of the stator winding 602 located above the lower winding groove 501. Figure 1A (As can be seen), this facilitates better movement of the stator winding 602. The first guide rib 401 extends axially to the lower wire groove 501, so that the first annular disk 100 faces the second annular disk 200 in the axial direction (i.e., Figure 10 As shown in direction b), the bottom surface of the first guide rib 401 is located above part of the stator winding 602 (i.e., the stator winding 602 located below the lower slot 501). Figure 10 visible).

[0113] In other words, along the axial direction, the bottom surface of the first guide rib 401 is located above part of the stator winding 602. Thus, when the winding block 400 pushes the stator winding 602 to move into the lower wire groove 501 formed by two adjacent winding guides 500 with grooves 502, the stator winding 602 located below the winding guides 500 will be stuck after hitting the stator core 600 and will not be able to continue moving radially, that is, along the lower wire groove 501. At this time, the winding block 400 continues to move along the lower wire groove 501 formed by two adjacent winding guides 500 with grooves 502 to push the stator winding 602 located above the winding guides 500 to continue moving. In this way, the stator winding 602 is flipped, changing from the state of being fitted with the lower wire groove 501 along the axial direction to the state of being fitted with the wire groove 601 of the stator core 600 radially, that is, successfully fitted into the wire groove 601 of the stator core 600.

[0114] If, during this process, the stator winding 602 located below the winding guide bar 500 is not subjected to axial pressure from the bottom surface of the first guide rib 401, it may move axially as the winding block 400 pushes the stator winding 602 located above the winding guide bar 500, causing the stator winding 602 to fail to be successfully fitted into the slot 601 of the stator core 600.

[0115] For example, refer to Figure 10 and combined Figure 5 Each wire insert 400 also includes a pusher block 403, which extends axially beyond the lower wire groove 501 and opposite the storage recess 504. The pusher block 403 is used to move along the storage recess 504 in a radial direction and toward the placement space (i.e., Figure 10 (as shown in direction a), the paper pusher 403 and the first guide rib 401 are arranged radially at intervals, and the paper pusher 403 is located behind the first guide rib 401.

[0116] Thus, when the winding block 400 moves along the lower wire groove 501, the first guide rib 401 will first contact the stator winding 602 in the lower wire groove 501 and push the stator winding 602 to move. When the stator winding 602 moves into the wire groove 601 fitted into the stator core 600, the paper pusher block 403 will then push the slot cover paper 900 in the storage groove 504 into the wire groove 601 of the stator core 600. Due to the sequential relationship of this process, the slot cover paper 900 will cover the stator winding 602 that was pushed into the wire groove 601 one step earlier, which will protect the stator winding 602 and prevent the stator winding 602 from rebounding.

[0117] For example, refer to Figures 10 to 12The paper pusher block 403 includes a paper pusher portion 404 and a second extension portion 405. The second extension portion 405 extends axially, with one end connected to the wire insert block 400 and the other end connected to the paper pusher portion 404. The shape of the paper pusher portion 404 is adapted to the shape of the storage groove 504. Radially, the paper pusher portion 404 is disposed opposite to the storage groove 504, so that the paper pusher portion 404 can move along the storage groove 504 and simultaneously make maximum contact with the slot cover paper 900 in the storage groove 504, providing it with sufficient pushing force to help the slot cover paper 900 successfully move along the storage groove 504 and be pushed into the wire groove 601 of the stator core 600. Figure 9 visible).

[0118] For example, refer to Figures 13 to 15 The wire-insertion mechanism also includes ten wire-pushing guides 700 and five wire-pushing blocks 800. The two closest wire-pushing guides 700 are circumferentially spaced to form wire-pushing grooves 701. Each wire-pushing guide 700 extends radially and axially with the second annular disc facing the first annular disc (i.e., Figure 14 (As shown in direction c), each pusher bar 700 is located above the insert bar 500, and the two closest pusher bars 700 span the two insert bars 500, with portions of the two pusher bars 700 located between them. The pusher block 800 is radially slidably connected to the pusher groove 701, and the rotating part 300 is used to drive the pusher block 800 and the insert block 400 to move synchronously in the radial direction.

[0119] It should be noted that the number and position of the push-wire blocks 800 are not limited in this application embodiment. The specific selection is made according to actual needs. For example, eight, ten, eleven, etc. can be set. Alternatively, a push-wire block 800 can be set between each of two adjacent wire embedding blocks 400. Or, as shown in this application embodiment, five push-wire blocks 800 can be set, with two wire embedding blocks 400 on both sides of each push-wire block 800.

[0120] After the stator winding 602 is fitted into the lower wire slot 501, the wire insert block 400 abuts against both ends of the stator winding 602. The push wire guide bar 700 is located above the wire insert guide bar 500 and part of the push wire guide bar 700 is located between the two wire insert guide bars 500. That is, the push wire block 800 is located between the two wire insert blocks 400. In other words, the push wire block 800 abuts against the non-end positions of the stator winding 602.

[0121] For example, combined Figure 8Each pusher block 800 extends radially away from the rotating part. A second guide rib 801 is provided at the front end of each pusher block 800. The second guide rib 801 extends axially to the pusher groove 701 and is slidably connected to the pusher guide bar 700 along the pusher groove 701. Thus, when an external device (e.g., a motor) drives the rotating part 300 to rotate, the pusher block 800... Figure 3 The rotating part 300 can synchronously drive the pusher block 800 to move radially, specifically, drive the second guide rib 801 to move along the pusher groove 701.

[0122] For example, each pusher block 800 is provided with a rotation space 802, and the flip hook 803 is rotatably connected to the pusher block 800.

[0123] Specifically, the flip hook 803 includes a vertical part 804 and a horizontal part 805. In the initial state, the vertical part 804 extends axially and the horizontal part 805 extends radially. The vertical part 804 connects to the horizontal part 805 to form an L-shaped flip hook 803. A pin is connected in the rotation space 802. The pin connects to one end of the vertical part 804 of the flip hook 803 to realize the rotatable connection between the vertical part 804 and the pusher block 800. The other end of the vertical part 804 is connected to the horizontal part 805 so that the vertical part 804 of the flip hook 803 can rotate relative to the pusher block 800 until the horizontal part 805 of the flip hook 803 extends axially. At this time, the horizontal part 805 is located between two sets of stator windings 602 and abuts against one set of stator windings 602 to separate it from the other set of stator windings 602. The pusher block 800 abuts against the other set of stator windings 602.

[0124] Specifically, the rotating part 300 drives the pusher block 800 and the insert block 400 to move radially in sync. When the insert block 400 pushes the stator winding 602 in the lower slot 501 into the slot 601 of the stator core 600, two sets of stator windings 602 may overlap in the axial direction, resulting in phenomena such as wire clamping and bulging. At this time, the insert block 400 has moved to the end of the lower slot 501 and cannot continue to move forward, so it cannot continue to push the stator winding 602 to separate it from other stator windings 602.

[0125] Therefore, after the stator winding 602 is fitted into the lower wire slot 501, this application rotates the hook 803 relative to the pusher block 800, causing the horizontal portion 805 of the pusher block 800 to rotate to extend axially (e.g. Figure 14(As shown in the diagram), and located between two sets of stator windings 602, the horizontal part 805 abuts against one set of stator windings 602, separating it from the other set of stator windings 602. The pusher block 800 abuts against the other set of stator windings 602, and the multiple winding blocks 400 abut against the two ends of the two sets of stator windings 602 respectively. As the pusher block 800 is driven to move along the pusher groove 701, the pusher block 800 and the horizontal part 805 can assist the winding blocks 400 in pushing the stator windings 602 radially. During this process, since the horizontal part 805 is always located between the two sets of stator windings 602, the two sets of stator windings 602 are always in a separated state during this process, and there will be no problem of wire clamping.

[0126] When the winding block 400 continues to move along the lower wire groove 501 formed by two adjacent winding guides 500 with grooves 502, so as to push the two sets of stator windings 602 located above the winding guides 500 to continue to move, the hook 803 does not contact the stator windings 602 at this time, so that the stator windings 602 can successfully flip, changing from the state of being fitted with the lower wire groove 501 along the axial direction to the state of being fitted with the wire groove 601 of the stator core 600 along the radial direction, that is, successfully fitted with the wire groove 601 of the stator core 600. Since the two sets of stator windings 602 have been separated before flipping and have a certain gap, the gap is always maintained after flipping, thereby avoiding the phenomenon of wire clamping and bulging of the two sets of stator windings 602.

[0127] It should be noted that the embodiments of this application do not limit the number and setting position of the push wire guide 700 and the push wire block 800, as long as the flip hook 803 on the push wire block 800 can separate the stator winding 602 that may be clamped or bulged.

[0128] The winding principle of the winding mechanism provided in this application embodiment is to embed the stator winding 602 into the wire slot 601 of the stator core 600 in a direction from the outside to the inside and from top to bottom. Then, by utilizing the special slot shape of the rotating part 300 and the first annular disk 100, the rotational motion of the rotating part 300 is converted into the radial motion of each winding block 400 and the pusher block 800. The winding block 400 adopts different end designs and a special hook 803 design of the pusher block 800 to meet the winding requirements of the distributed winding design, the structural design of the pusher block 403 and the storage strip 503, and the concept of synchronously embedding the slot cover paper 900.

[0129] The winding mechanism provided in this application embodiment realizes automatic winding of the winding, replacing the manual winding scheme, and can bring at least the following benefits:

[0130] 1. Improve production efficiency. With traditional manual winding, it takes a skilled worker about 1.5 to 2 hours to complete the winding of one stator. After adopting this solution, the entire winding time will be shortened to 10 minutes.

[0131] 2. Reduce the skill requirements for operators while improving the consistency of product quality.

[0132] This application also discloses a wire-embedding method, employing the wire-embedding mechanism of any of the above embodiments, including:

[0133] Multiple sets of stator windings 602 are provided. Workers place the multiple sets of stator windings 602 into the lower slots 501 respectively, so that a part of each set of stator windings 602 passes through the lower slot 501 and is located below it, while another part of the stator windings 602 is located above the lower slot 501 and spans multiple winding guides 500. Then, the flip hook 803 is rotated relative to the push block 800 so that the horizontal part 805 rotates to extend axially. At this time, the horizontal part 805 is located between two sets of stator windings 602 and abuts against one set of stator windings 602. The vertical part 804 rotates to extend radially. Next, a stator core 600 is provided. Along the axial direction, slot bottom paper is placed at the bottom of the slot 601, and a guard tooth 603 is placed at one end of the slot bottom paper. The guard tooth 603 is used to limit the position of the stator windings 602 after winding and support the slot bottom paper flip, thereby ensuring the creepage distance of the stator windings 602 and the quality of the slot bottom paper.

[0134] Then, the stator core 600 is placed in the placement space manually or automatically, positioned below the groove 502 of the winding guide 500, meaning the groove 502 fits over the stator core 600. Finally, the slot cover paper 900 is placed in the storage groove 504, with both ends of the slot cover paper 900 abutting against the first extensions 506 of the two adjacent storage bars 503. The slot cover paper 900 is bent within the storage groove 504 to form a protective space. This completes the preparation work for winding.

[0135] Then, an external device (e.g., a motor) drives the second connecting part 301 to rotate, thereby causing the rotating part 300 to rotate circumferentially within the installation space. At this time, one end of the plurality of wire insert blocks 400 moves along the first inclined groove 302 under the drive of the rotating part 300, causing some of the wire insert blocks 400 located in the second connecting groove 103 to move along the second connecting groove 103, that is, causing the wire insert blocks 400 to move radially.

[0136] At this time, the first guide rib 401 of the winding block 400 moves along the lower wire groove 501 to push the two ends of the stator winding 602 in the lower wire groove 501 to move until it is at the front end of the winding space 202. When the stator winding 602 located below the winding guide bar 500 touches the stator core 600 located in the placement space, it will be stuck and cannot continue to move radially, that is, it cannot continue to move along the lower wire groove 501. At this time, the winding block 400 continues to move along the lower wire groove 501 formed by two adjacent winding guide bars 500 with groove 502 to push the stator winding 602 located above the winding guide bar 500 to continue to move. In this way, the stator winding 602 is flipped, changing from the state of being axially fitted with the lower wire groove 501 to the state of being radially fitted with the wire groove 601 of the stator core 600, that is, successfully fitted into the wire groove 601 of the stator core 600.

[0137] During this process, the paper pusher block 403, which is radially spaced from and located behind the first guide rib 401, will also move radially under the guidance of the winding block 400. The paper pusher part 404 of the paper pusher block 403 moves synchronously along the storage groove 504, pushing the slot cover paper 900 in the storage groove 504 towards the stator core 600. When the winding block 400 moves to the front end of the lower wire groove 501, that is, when the stator winding 602 is successfully fitted into the wire groove 601 of the stator core 600, the paper pusher block 403 will also push the slot cover paper 900 to the top of the stator core 600 to cover the stator core 600.

[0138] Similarly, one end of each of the multiple pusher blocks 800 moves along the first inclined groove 302 under the drive of the rotating part 300, causing some of the pusher blocks 800 located in the second connecting groove 103 to move along the second connecting groove 103, that is, causing the pusher blocks 800 to move radially. At this time, the flip hook 803 also moves synchronously. The horizontal part 805 of the flip hook 803 abuts against the non-end positions of one set of stator windings 602 (i.e., the part of the stator winding 602 that spans the wire guide bar 500), and the foremost end of the pusher block 800 abuts against the non-end positions of another set of stator windings 602 (i.e., the part of the stator winding 602 that spans the wire guide bar 500). The second guide rib 8 of the pusher block 800... 01 moves along the push groove 701 and synchronously pushes the stator winding 602 in the lower groove 501 with the aforementioned winding block 400 until it is at the front end of the winding space 202. At this time, the flip hook 803 does not contact the stator winding 602, so that the stator winding 602 can successfully flip, changing from the state of being axially fitted with the lower groove 501 to the state of being radially fitted with the groove 601 of the stator core 600. That is, it is successfully fitted into the groove 601 of the stator core 600. Since the two sets of stator windings 602 have been separated before flipping and have a certain gap, this gap is always maintained after flipping, thereby avoiding phenomena such as wire clamping and bulging of the two sets of stator windings 602.

[0139] While the present invention has been illustrated and described with reference to certain preferred embodiments, those skilled in the art should understand that the above description is a further detailed explanation of the invention in conjunction with specific embodiments, and should not be construed as limiting the specific implementation of the invention to these descriptions. Various changes in form and detail can be made by those skilled in the art, including several simple deductions or substitutions, without departing from the spirit and scope of the invention.

Claims

1. A wire-insertion mechanism, characterized in that, include: Part One; The second part is provided with the first part and the second part spaced apart along the axial direction and connected to form an installation space; A rotating portion, the rotating portion being defined in the mounting space and for rotating circumferentially relative to the mounting space, the first portion, the second portion and the rotating portion together defining a wiring space; Multiple wire-insertion blocks, each of which is connected to the rotating part and is slidably connected to the first part in a radial direction, the rotating part being used to rotate in the circumferential direction to drive the wire-insertion blocks to move within the wire-insertion space, so that the wire-insertion blocks move radially relative to the first part; Multiple winding guides are arranged at intervals along the circumferential direction. Each winding guide extends radially and is connected at one end to the second part, so that a portion of the winding guide is located in the winding space. Two adjacent winding guides form a lower wire groove, which is used to fit the stator winding. Along the axial direction, each winding guide is used to cover the stator core, so that the groove opening width of the lower wire groove is smaller than the groove opening width of the wire groove of the stator core. The winding block is slidably connected to the winding guide bar along the lower wire groove to push the stator winding so that the stator winding is fitted into the wire groove of the stator core.

2. The winding mechanism as described in claim 1, characterized in that, Each of the wire guide bars has a groove on the side away from the wire block. The shape of the groove is adapted to the shape of the stator core and is used to accommodate the stator core.

3. The winding mechanism as described in claim 2, characterized in that, The winding mechanism further includes a plurality of storage bars corresponding one-to-one with the winding guide bars. The plurality of storage bars are spaced apart along the circumferential direction to form storage grooves. The storage grooves are used to store slot cover paper. Each of the storage bars is located in the winding space and extends radially to one end near the groove to collectively enclose a placement space for placing the stator core. The groove is located in the placement space along the axial direction with the first part facing the second part. Each of the storage bars is located below its corresponding winding guide bar so that the storage groove is located below the lower winding groove.

4. The winding mechanism as described in claim 3, characterized in that, Each of the winding blocks includes a first guide rib connected to the lower winding slot in a radially slidable manner. The first guide rib extends axially into the lower winding slot such that, along the axial direction and with the first portion facing the second portion, the bottom surface of the first guide rib is located above a portion of the stator winding.

5. The winding mechanism as described in claim 4, characterized in that, Each of the inlay blocks further includes a paper pusher block extending along the axial direction to be opposite the storage groove. The paper pusher block is for movement along the storage groove in the radial direction and close to the placement space. The paper pusher block is radially spaced from the first guide rib, and the paper pusher block is located behind the first guide rib.

6. The winding mechanism as described in claim 3, characterized in that, Each of the storage strips includes a body portion and a first extension portion. Along the axial direction, one end of the body portion is connected to the inlay guide strip, and the other end is connected to the first extension portion. The first extension portion extends circumferentially and protrudes from both sides of the body portion to form a semi-storage groove with the body portion and to form the storage groove with the semi-storage groove of the adjacent storage strip. Two adjacent first extension portions are respectively used to abut against the two ends of the slot cover paper.

7. The winding mechanism as described in claim 5, characterized in that, The paper pusher includes a paper pusher portion and a second extension portion. The second extension portion extends along the axial direction. Along the axial direction, one end of the second extension portion is connected to the wire insert block, and the other end is connected to the paper pusher portion. The shape of the paper pusher portion is adapted to the shape of the storage groove. Along the radial direction, the paper pusher portion is disposed opposite to the storage groove. The paper pusher portion is used to move along the storage groove.

8. The winding mechanism as described in claim 1, characterized in that, The winding mechanism further includes multiple pusher bars and pusher blocks. The multiple pusher bars are spaced apart circumferentially, with the two closest pusher bars forming a pusher groove. Each pusher bar extends radially, and along the axial direction with the second portion facing the first portion, each pusher bar is located above the winding guide bar, and some pusher bars are located between two winding guide bars. Each pusher block extends radially, and one end is connected to the rotating part. The pusher block is slidably connected to the first portion radially, and the pusher block is slidably connected to the pusher groove radially. The rotating part is used to drive the pusher block and the winding block to move synchronously radially.

9. The winding mechanism as described in claim 8, characterized in that, Each of the pusher blocks includes a second guide rib, which is slidably connected to the pusher groove in the radial direction and extends into the pusher groove in the axial direction.

10. The winding mechanism as described in claim 8, characterized in that, The winding mechanism further includes a flip hook rotatably connected to the pusher block, such that the flip hook rotates relative to the pusher block to be positioned between the two sets of stator windings and abuts against one set of stator windings to separate it from the other set of stator windings.

11. The winding mechanism as described in claim 10, characterized in that, The flip-hook includes a vertical portion extending along the axial direction and a horizontal portion extending along the radial direction. One end of the vertical portion is rotatably connected to the push-wire block, and the other end is connected to the horizontal portion. The flip-hook can rotate relative to the push-wire block so that the horizontal portion rotates to extend along the axial direction and the vertical portion rotates to extend along the radial direction. At this time, the horizontal portion is located between the two sets of stator windings and abuts against one set of stator windings to separate it from the other set of stator windings. The push-wire block abuts against the other set of stator windings.

12. The winding mechanism as described in claim 1, characterized in that, The wire-insertion mechanism further includes a fixing part, one end of which is connected to the wire-insertion block and the other end of which is connected to the first part.

13. The winding mechanism as described in claim 1, characterized in that, The rotating part includes a second connecting part that extends out of the mounting space to connect with an external device, the external device being used to drive the rotating part to rotate circumferentially.

14. The winding mechanism as described in claim 1 or 8, characterized in that, The rotating part is provided with a plurality of first inclined grooves, which are spaced apart along the circumference. One end of the wire insert block is slidably connected to the first inclined groove. The first part includes a plurality of second connecting grooves, which are spaced apart along the circumference and extend radially. A portion of the wire insert block is slidably connected to the second connecting groove. One end of the wire pusher block is slidably connected to the first inclined groove, and a portion of the wire pusher block is slidably connected to the second connecting groove.

15. A wire embedding method, characterized in that, The winding mechanism as described in any one of claims 1-14 includes: Provide multiple sets of the stator windings, and respectively sleeve the multiple sets of stator windings in the lower wire slot; Provide the stator core and place the stator core in the placement space; The rotating part drives the plurality of wire-inserting blocks to move along the lower wire groove; The plurality of insert blocks push the plurality of stator windings to fit into the slots of the stator core.

16. The wire embedding method as described in claim 15, characterized in that, After the multiple sets of stator windings are respectively fitted into the lower wire slot, the following steps are included: the hook rotates relative to the pusher block to rotate the horizontal part to extend along the axial direction, at which time the horizontal part is located between two sets of stator windings and abuts against one set of stator windings, and the vertical part rotates to extend along the radial direction.

17. The wire embedding method as described in claim 16, characterized in that, Prior to providing the stator core, the following are included: Along the axial direction, a groove bottom paper is placed at the bottom of the groove, and a protective tooth is placed at one end of the groove bottom paper.

18. The wire embedding method as described in claim 17, characterized in that, Before the rotating part drives the plurality of winding blocks to move along the lower wire groove, the process includes: placing a slot cover paper in the storage groove; while the rotating part drives the plurality of winding blocks to move along the lower wire groove, the process includes: the rotating part drives a paper pusher block to move along the storage groove, and the rotating part drives a wire pusher block to move along the wire pusher groove; after the plurality of winding blocks push the plurality of stator windings to be fitted into the wire groove of the stator core, the process includes: the paper pusher pushes the slot cover paper to cover the plurality of stator windings.

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