Stator assembling device

Abstract

The invention provides a stator assembling device, and belongs to the technical field of water pumps. A stator assembling device comprises a rack and a coil inserting spindle used for winding a coil, the rack is provided with a coil inserting mold, the stator assembling device further comprises a plumb bob manipulator and a coil inserting manipulator, and the coil inserting spindle is sleeved with a coil pushing plate; the plumb bob manipulator can clamp the coil inserting spindle and the coil pushing plate and insert the coil inserting spindle into the coil inserting mold, and after the plumb bob manipulator inserts the coil inserting spindle into the coil inserting mold, the plumb bob manipulator can push the coil pushing plate to move so that the coil can slide to the coil inserting mold; the coil inserting manipulator comprises a second clamping jaw and a first clamping jaw capable of gathering coils, the second clamping jaw can sleeve the stator iron core at the end part of the coil inserting mold, the coil inserting mold can push the coils into the stator iron core, and the rack is also provided with a positioning clamping jaw capable of clamping the stator iron core when the coil inserting mold pushes the coils. According to the invention, the regularity of the coil is ensured, the shaping difficulty of later shaping is reduced, and the production efficiency and the coil inserting quality are ensured.

Description

Technical Field

[0001] The present invention belongs to the technical field of water pumps and relates to a stator assembly device. Background Art

[0002] The stator consists of a stator core and coils. The assembly of the stator usually includes several processes such as paper insertion, wire threading, coil insertion, wire tying, and shaping. Paper insertion is to insert insulating paper into the stator core for insulating the stator core. Wire threading is to wind a conductive material such as copper wire or aluminum wire around an insertion spindle to form a coil. Coil insertion is to install the wound coil in the stator core. Wire tying is to fix the coil winding on the stator core to prevent loosening during operation. Shaping is a process used to check whether the stator assembly is qualified. For unqualified stators, the coils need to be sorted to meet the production quality.

[0003] An efficient horizontal coil inserter disclosed in a Chinese patent with the application number 201820773239.6 includes a bracket. A workbench is arranged on the bracket. The bracket and the right side of the workbench are both connected to a chassis. The middle part of the left side of the chassis is connected with an insertion mold. The coil inserter also has an X-shaped adjusting frame and two mechanical claws. The adjusting frame is used to place the stator core, and the two mechanical claws are used to clamp the stator core. Before coil insertion, the wound coil is transferred to the insertion mold, and the stator core is placed on the adjusting frame and positioned by the two mechanical claws. Then the insertion mold works to insert the coil into the stator core.

[0004] The purpose of coil insertion is to create an electromagnetic field on the stator core. This electromagnetic field will interact with the magnetic field of the rotor to realize the rotation of the rotor and ensure the normal operation of the water pump. Usually, during the wire threading operation, after the wire threading process is completed, during the transfer process, the insertion spindle is clamped by a robotic arm and aligned with the insertion mold for insertion. Then, the coil is moved to the insertion mold by the robotic arm or manually. During the transfer and coil insertion processes, no intervention is made on the regularity of the coil, so various situations that may damage the regularity of the coil may occur during the transfer or coil insertion process, such as: when manually transferring, the coil may be disordered due to improper operation by the operator, the robotic arm may cause deformation pressure on the coil, and it is also possible that the coil interferes with the stator core during the coil insertion process, resulting in coil deformation. The irregularity of the coil may, on the one hand, cause a short circuit between windings. When in use, the current may bypass the predetermined circuit path, which may cause problems such as abnormal operation or damage of the motor, overheating of the motor, excessive current, and increased power consumption; on the other hand, it may cause uneven magnetic field distribution of the stator winding, affecting the performance of the motor, such as reducing power output, generating vibration and noise, etc.

[0005] In the prior art, for workpieces with the coil regularity not meeting the standard, manual shaping is usually used for re - arrangement. However, since the number of coil turns is very large, manual shaping takes a lot of time. For workpieces with low wire - embedding quality, their coils will be discarded, resulting in waste. Therefore, ensuring the coil regularity during the coil transfer and wire - embedding process is very important for production efficiency and wire - embedding quality. Summary of the Invention

[0006] The object of the present invention is to address the above - mentioned problems in the existing technology and propose a stator assembly device. The technical problem to be solved by the present invention is: how to improve the wire - embedding quality.

[0007] To achieve the above object, the present invention is realized through the following technical solutions:

[0008] A stator assembly device includes a frame and a wire - embedding spindle for winding coils. An in - line die is provided on the frame. It is characterized in that the stator assembly device further includes a wire - hammer manipulator and a wire - embedding manipulator. A coil pushing plate is sleeved outside the wire - embedding spindle.

[0009] The wire - hammer manipulator can clamp the wire - embedding spindle and the coil pushing plate and insert the wire - embedding spindle into the in - line die. After the wire - hammer manipulator inserts the wire - embedding spindle into the in - line die, the wire - hammer manipulator can push the coil pushing plate to move so that the coil slides onto the in - line die.

[0010] The wire - embedding manipulator includes a second jaw and a first jaw capable of gathering the coils. The second jaw can sleeved the stator core on the end of the in - line die and the in - line die can push the coil into the stator core. A positioning jaw capable of clamping the stator core when the in - line die pushes the coil is further provided on the frame.

[0011] During normal operation, first, the wire - hammer manipulator picks up the wire - embedding spindle wound with coils, inserts the wire - embedding spindle into the in - line die for positioning, and then pushes the coil pushing plate through the wire - hammer manipulator, thereby pushing the coil to transfer the coil to the in - line die. Then the wire - hammer manipulator removes the wire - embedding spindle and the coil pushing plate positioned on the in - line die to complete the transfer of the coil. Secondly, the second jaw of the wire - embedding manipulator operates, grabs the stator core embedded with insulating paper, positions the stator core on the in - line die, and then clamps and fixes the stator core through the positioning jaw. At this time, the first jaw closes around the in - line die. The in - line die pushes the coil towards the stator core. When the coil moves, a certain squeezing force is generated on the circumference of the coil by the first jaw when the coil passes through the first jaw, so that the coil is gathered. The gathered coil continues to move and is embedded into the stator core.

[0012] First, during the process of transferring the coil wound around the wire winding spindle to the wire embedding mold in the wire threading process, the wire hammer manipulator does not come into contact with the coil throughout the process. Instead, the coil is transferred by pushing the coil pushing plate. The coil pushing plate abuts against the coil along the axial direction of the coil and has a relatively large contact area. Therefore, the pressure exerted on the coil is decomposed. Compared with the situation where manual labor and the wire hammer manipulator directly contact the coil, in which manual labor and the wire hammer manipulator usually grip the coil circumferentially, the circumferential part of the coil is relatively fragile and prone to deformation. Therefore, replacing it with pushing the coil through the coil pushing plate to achieve transfer results in a smaller deformation force on the coil, ensuring the regularity of the coil.

[0013] Second, in the prior art, the stator core usually has a number of wire embedding grooves circumferentially provided along its inner wall. After wire threading, the overall coil is relatively loose and large in volume. During wire embedding, the coil will interfere with the stator core, and due to the uneven inner circumferential wall of the stator core, the regularity of the coil during wire embedding is greatly reduced. Therefore, the setting of the first jaw can uniformly and smoothly extrude the coil during the movement of the coil, causing the coil to gather towards the axis, improving the convenience of embedding the coil into the stator core, reducing the deformation pressure of the stator core on the coil, and ensuring the regularity of the coil.

[0014] By intervening in the regularity of the coil during the operation links that can contact the coil during the coil transfer and wire embedding processes to ensure the regularity of the coil, the shaping difficulty of subsequent shaping is reduced, and the production efficiency and wire embedding quality are ensured.

[0015] In the above-mentioned stator assembly device, the coil pushing plate includes an annular connecting portion. At both ends of the connecting portion, a top pushing portion and a clamping portion that are coaxial with the connecting portion and are both annular are respectively fixed. The outer diameter dimension of the clamping portion is smaller than that of the top pushing portion. The wire winding spindle has a columnar base, and one end of the base is provided with a number of positioning strips. The number of positioning strips are distributed circumferentially along the base. The inner circumference of the top pushing portion has grooves adapted to the number of positioning strips. The structure of the coil pushing plate is simple. The relatively large top pushing portion can apply a more uniform force to the coil during movement. The number of positioning strips enclose a columnar space and are sleeved on the wire embedding mold to achieve plug-in connection with the wire embedding mold. The setting of the grooves increases the connection stability between the coil pushing plate and the wire winding spindle.

[0016] In the above-mentioned stator assembly device, the wire hammer manipulator includes two clamping jaws that can approach each other. The two clamping jaws have arc-shaped clamping surfaces. When the two clamping surfaces approach each other, they can be attached to the outer periphery of the base and clamp the base. The two clamping jaws are fixed with clamping plates. There is an insertion gap between the clamping plates and the clamping jaws. When the clamping jaws clamp the base, the clamping plates are inserted between the pushing part and the clamping part, and the clamping part is inserted into the insertion gap. When the clamping jaws clamp the base of the wire embedding spindle, the clamping plates can be inserted between the pushing part and the clamping part to clamp the coil pushing plate at the same time. When it is necessary to push the coil pushing plate, the two clamping jaws are brought into contact with the base, and the coil pushing plate can be pushed. The clamping jaws and the clamping plates cooperate to clamp the wire embedding spindle and the coil pushing plate at the same time, with a simple structure and strong practicability.

[0017] In the above-mentioned stator assembly device, the wire hammer manipulator further includes two limiting arms that can approach each other and surround the outer periphery formed by several positioning bars. One end of the two limiting arms is bent to form arc-shaped limiting parts. The concave surfaces of the two arc-shaped limiting parts are arranged opposite to each other and there is a gap between them and the outer periphery formed by several positioning bars. During the process of transferring the coil, the wire hammer manipulator flips the wire embedding spindle. The setting of the limiting arms can block the coil and prevent the coil from slipping.

[0018] In the above-mentioned stator assembly device, arc-shaped gathering blocks are provided on the opposite sides of the two first jaws. The gathering blocks have smooth transition surfaces. When the stator core is clamped by the positioning jaws, when the two first jaws approach the stator core, the transition surfaces are on the side away from the stator core. When the two gathering blocks approach each other, the arc-shaped concave surfaces of the gathering blocks enclose a gathering hole with a diameter smaller than the outer diameter of the stator core. Since the gathering blocks are arc-shaped and have smooth transition surfaces, the gathering blocks and the coil are in smooth contact when the coil passes through the gathering hole, so as to ensure the regularity of the coil during the gathering process.

[0019] In the above-mentioned stator assembly device, the wire embedding manipulator further includes a strip-shaped first clamping seat. Fixed blocks are fixed on both sides of the first clamping seat. Two rotating blocks that are arranged opposite to each other and can be combined or separated are hinged on the fixed blocks. The two first jaws and the two second jaws are respectively connected to the corresponding rotating blocks by bolts. The structure is simple and the reliability is high.

[0020] In the above-mentioned stator assembly device, a second clamping seat is rotatably connected above the first clamping seat. The second clamping seat is fixedly connected with a sliding seat. A slider capable of slidingly connecting along the length direction of the wire embedding mold is arranged on the sliding seat. A wire embedding guiding column for limiting and guiding the coil is connected to the slider, and the axial direction of the wire embedding guiding column is consistent with the moving direction of the slider. The first clamping seat and the second clamping seat are rotatably connected, so that the first clamping jaw and the second clamping jaw can be switched without changing the position of the wire embedding guiding column, improving the wire embedding efficiency.

[0021] In the above-mentioned stator assembly device, the other end of the wire embedding spindle has a support rod, and a plumb bob top rod is hinged on the frame. The plumb bob top rod can rotate to abut against the end of the support rod. After pushing the coil pushing plate to complete the coil transfer, it is necessary to pull back the coil pushing plate. When pulling back, since the clamping jaw does not clamp the base of the wire embedding spindle, the setting of the plumb bob top rod can position the wire embedding spindle when pulling back the coil pushing plate, preventing the wire embedding spindle from being accidentally pulled out.

[0022] Compared with the prior art, the advantages of the present invention are as follows:

[0023] 1. By intervening in the coil regularity during the coil transfer and wire embedding processes at the operation links that can contact the coil, the coil regularity is ensured, the shaping difficulty in the later stage is reduced, and the production efficiency and wire embedding quality are guaranteed.

[0024] 2. The gathering block is arc-shaped and has a smooth transition surface, so that the gathering block and the coil are in smooth contact when the coil passes through the gathering hole, ensuring the regularity of the coil during the gathering process. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is the overall structural schematic diagram of the stator assembly device.

[0026] Figure 2 is the partial structural schematic diagram in the coil transfer state.

[0027] Figure 3 is the structural schematic diagram in the wire embedding state.

[0028] Figure 4 is Figure 3 the enlarged view of area A in

[0029] Figure 5 is the partial structural schematic diagram of the plumb bob manipulator.

[0030] Figure 6 is Figure 2 the schematic diagram from another perspective.

[0031] Figure 7 is Figure 6 the enlarged view of area B in

[0032] Figure 8 It is a schematic structural diagram of the coil pushing plate.

[0033] Figure 9 It is a partial structural schematic diagram of the wire embedding manipulator.

[0034] Figure 10 It is a schematic structural diagram of the first jaw.

[0035] Figure 11 It is a partial structural schematic diagram of the stator assembly device of the present invention.

[0036] Figure 12 It is Figure 11 The enlarged view of area C in

[0037] In the figure, 1 is the frame; 11 is the wire embedding die; 12 is the positioning jaw; 13 is the wire hammer ejector rod; 2 is the wire embedding spindle; 21 is the base; 22 is the support rod; 23 is the positioning strip; 3 is the wire hammer manipulator; 31 is the clamping jaw; 311 is the clamping surface; 32 is the clamping plate; 33 is the insertion gap; 34 is the limiting arm; 341 is the arc-shaped limiting part; 4 is the wire embedding manipulator; 41 is the first jaw; 411 is the gathering block; 4111 is the transition surface; 412 is the gathering hole; 42 is the second jaw; 5 is the coil pushing plate; 51 is the connecting part; 52 is the pushing part; 521 is the groove; 53 is the clamping part; 61 is the first clamping seat; 62 is the fixed block; 63 is the rotating block; 71 is the second clamping seat; 72 is the sliding seat; 73 is the sliding block; 74 is the wire embedding guide post; 8 is the stator core. Specific embodiments

[0038] The following are specific embodiments of the present invention and in combination with the attached drawings, the technical solutions of the present invention are further described, but the present invention is not limited to the following embodiments.

[0039] As Figures 1 to 4 and Figure 11 、 Figure 12 shown, a stator assembly device includes a frame 1, a wire embedding spindle 2 for winding coils, a wire hammer manipulator 3 and a wire embedding manipulator 4.

[0040] The wire embedding die 11 is provided on the frame 1, a coil pushing plate 5 is sleeved outside the wire embedding spindle 2, the wire hammer manipulator 3 can clamp the wire embedding spindle 2 and the coil pushing plate 5 and insert the wire embedding spindle 2 into the wire embedding die 11, and after the wire hammer manipulator 3 inserts the wire embedding spindle 2 into the wire embedding die 11, the wire hammer manipulator 3 can push the coil pushing plate 5 to move so that the coil slides onto the wire embedding die 11.

[0041] Combined with 9 and Figure 10The wire-inserting manipulator 4 includes a second clamp 42 and a first clamp 41 capable of gathering the coil. The second clamp 42 can grab the stator core 8 and transfer the stator core 8 to the end of the wire-inserting mold 11, and the wire-inserting mold 11 can push the coil into the stator core 8. The wire-inserting mold 11 usually has an annular pushing part pushed by a cylinder. The pushing part is retracted in the frame 1 when not working. After the coil is sleeved in the wire-inserting mold 11, the pushing part extends out of the frame 1 under the push of the cylinder and pushes the coil to embed the coil into the stator core 8. The process of the wire-inserting mold 11 pushing the coil is a prior art, which is discussed in detail in this embodiment only to illustrate the working condition of the wire-inserting mold 11. The frame 1 is also provided with a positioning clamp 12 capable of clamping the stator core 8 when the wire-inserting mold 11 pushes the coil.

[0042] The two first clamping jaws 41 are provided with arc-shaped gathering blocks 411 on opposite sides. The gathering blocks 411 have a smooth transition surface. When the stator core 8 is clamped by the positioning clamping jaws 12, the two first clamping jaws 41 are close to the stator core 8 while the transition surface is located on the side away from the stator core 8. When the two gathering blocks 411 are close to each other, the arc-shaped concave surfaces of the gathering blocks 411 enclose a gathering hole 42 with an aperture smaller than the outer diameter of the stator core 8. The wire inserting manipulator 4 also includes a first clamping seat 61 in the shape of an elongated strip. Both sides of the first clamping seat 61 are fixed with fixed blocks 62. The fixed blocks 62 are hinged with two oppositely arranged rotating blocks 63 that can be engaged or separated. The two first clamping jaws 41 and the two second clamping jaws 42 are respectively connected to the corresponding rotating blocks 63 by bolts. A second clamping seat 71 is rotatably connected above the first clamping seat 61, and a sliding seat 72 is fixedly connected to the second clamping seat 71. A sliding block 73 is provided on the sliding block 72 and can be slidably connected along the length direction of the sliding wire embedding mold 11. A wire embedding guide column 74 for limiting and guiding the coil is connected to the sliding block 73. The axial direction of the wire embedding guide column 74 is consistent with the moving direction of the sliding block 73. The other end of the wire embedding spindle 2 has a support rod 24, and a wire bob top rod 13 is hinged on the frame 1, and the wire bob top rod 13 can be rotated to abut against the end of the support rod 22.

[0043] Combination Figures 5 to 8 As shown, the coil pushing plate 5 includes an annular connecting portion 51, and a pushing portion 52 and a clamping portion 53 which are coaxial with the connecting portion 51 and both are annular are fixed at both ends of the connecting portion 51, and the outer diameter of the clamping portion 53 is smaller than the outer diameter of the pushing portion 52. The embedded wire spindle 2 has a columnar base 21, and one end of the base 21 is an insertion end 22. A plurality of positioning strips 23 are provided on the insertion end 22, and the plurality of positioning strips 23 are distributed circumferentially along the base 21. The inner periphery of the pushing portion 52 has grooves matched with the plurality of positioning strips 23, and the clamping portion 53 can fit with the end face of the insertion end 22.

[0044] The plumb bob manipulator 3 includes two clamping jaws 31 that can approach each other. The two clamping jaws 31 have arc-shaped clamping surfaces 311. When the two clamping surfaces 311 approach each other, they can be attached to the outer periphery of the base 21 and clamp the base 21. A clamping plate 32 is fixed on the two clamping jaws 31 when they approach each other. There is an insertion gap 33 between the clamping plate 32 and the clamping jaws 31. When the clamping jaws 31 clamp the base 21, the clamping plate 32 is inserted between the top-pushing part 52 and the clamping part 53, and the clamping part 53 is inserted into the insertion gap 33. When the clamping jaws 31 clamp the base 21 of the wire-inserting spindle 2, the clamping plate 32 can be inserted between the top-pushing part 52 and the clamping part 53 to clamp the coil pushing plate 5 at the same time. When it is necessary to push the coil pushing plate 5, the two clamping jaws 31 are brought into contact with the base 21, and then the coil pushing plate 5 can be pushed.

[0045] The plumb bob manipulator 3 further includes two limiting arms 34 that can approach each other to surround the outer periphery formed by a plurality of positioning bars 23. One end of the two limiting arms 34 is bent to form an arc-shaped limiting part 341. The concave surfaces of the two arc-shaped limiting parts 341 are arranged opposite to each other and there is a gap between them and the outer periphery formed by the plurality of positioning bars 23.

[0046] First, the clamping jaws 31 of the plumb bob manipulator 3 clamp the wire-inserting spindle 2 wound with coils and grab the coil pushing plate 5 together through the clamping plate 32 connected to the clamping jaws 31. After grabbing, the wire-inserting spindle 2 is inserted and positioned on the wire-inserting mold 11. The clamping jaws 31 are moderately loosened to make the clamping jaws 31 in contact with the base 21 of the wire-inserting spindle 2. At this time, the clamping plate 32 is still inserted between the top-pushing part 52 and the clamping part of the coil pushing plate 5. The clamping jaws 31 move along the length direction of the wire-inserting mold 11 to push the coil pushing plate 5, thereby pushing the coil to transfer the coil to the wire-inserting mold 11. Then the plumb bob ejector rod 13 abuts against the support rod 22 of the wire-inserting spindle 2, and the clamping jaws 31 pull back the coil pushing plate 5 and separate the wire-inserting spindle 2 from the wire-inserting mold 11 to complete the transfer of the coil.

[0047] Then, the second jaw 42 of the wire-inserting manipulator 4 operates. It grabs the stator core 8 embedded with insulating paper, positions the stator core 8 on the wire-inserting mold 11, and then clamps and fixes the stator core 8 through the positioning jaws 12. At this time, the first jaw 41 surrounds the wire-inserting mold 11 together. The wire-inserting mold 11 pushes the coil towards the stator core 8. When moving, the coil generates a certain squeezing force on the circumference of the coil when passing through the first jaw 41 to make the coil gather. The gathered coil continues to move and is embedded in the stator core 8.

[0048] During the process of transferring the coil wound around the wire winding spindle 2 to the wire embedding mold 11 in the wire threading process, the wire hammer manipulator 3 does not contact the coil throughout the process. The coil is transferred by pushing the coil pushing plate 5. The coil pushing plate 5 abuts against the coil along the axial direction of the coil and has a relatively large contact area. Therefore, the pressure received by the coil is decomposed. Compared with the situation where manual labor and the wire hammer manipulator 3 directly contact the coil, manual labor and the wire hammer manipulator 3 usually grip the coil along the circumferential direction of the coil. The circumferential direction of the coil is relatively fragile and prone to deformation. Therefore, replacing it with pushing the coil through the coil pushing plate 5 to achieve transfer results in a smaller deformation force on the coil and ensures the regularity of the coil.

[0049] The stator core 8 is usually provided with a plurality of wire embedding grooves along the inner wall circumferentially. The overall coil after wire threading is relatively loose and large in volume. During wire embedding, the coil will interfere with the stator core 8 and due to the uneven inner circumferential wall of the stator core 8, the regularity of the coil during wire embedding is greatly reduced. Therefore, the setting of the first clamping jaw 41 can uniformly and smoothly extrude the coil during the movement of the coil, causing the coil to gather towards the axis, improving the convenience of embedding the coil into the stator core 8, reducing the deformation pressure of the stator core 8 on the coil, and ensuring the regularity of the coil.

[0050] By intervening in the regularity of the coil in the operation links that can contact the coil during the coil transfer and wire embedding processes to ensure the regularity of the coil, the shaping difficulty of subsequent shaping is reduced, and the production efficiency and wire embedding quality are ensured.

[0051] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art to which the present invention pertains can make various modifications or supplements to the described specific embodiments or use similar methods for substitution, but will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0052] Although terms such as frame 1, wire embedding mold 11, positioning clamping jaw 12, wire hammer ejector rod 13, wire winding spindle 2, base 21, support rod 24, positioning strip 23, wire hammer manipulator 3, clamping jaw 31, clamping surface 311, clamping plate 32, insertion gap 33, wire embedding manipulator 4, first clamping jaw 41, gathering block 411, transition surface, gathering hole 42, second clamping jaw 42, limiting arm 34, arc-shaped limiting portion 341, coil pushing plate 5, connecting portion 51, pushing portion 52, groove, clamping portion 53, first clamping seat 61, fixing block 62, rotating block 63, second clamping seat 71, sliding seat 72, sliding block 73, wire embedding guide post 74, stator core 8, etc. are used more frequently in this article, the possibility of using other terms is not excluded. The use of these terms is only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional limitation is contrary to the spirit of the present invention.

Claims

1. A stator assembly device, comprising a frame (1) and an inlay spindle (2) for winding coils, wherein an inlay die (11) is provided on the frame (1), and is characterized in that, The stator assembly device further includes a plumb bob manipulator (3) and a wire embedding manipulator (4). A coil pushing plate (5) is sleeved outside the wire embedding spindle (2). The plumb bob manipulator (3) can clamp the wire embedding spindle (2) and the coil pushing plate (5) and insert the wire embedding spindle (2) onto the wire embedding die (11). After the plumb bob manipulator (3) inserts the wire embedding spindle (2) onto the wire embedding die (11), the plumb bob manipulator (3) can push the coil pushing plate (5) to move so that the coil slides onto the wire embedding die (11). The wire embedding manipulator (4) includes a second jaw (42) and a first jaw (41) capable of gathering the coil. The second jaw (42) can sleave the stator core (8) on the end of the wire embedding die (11), and the wire embedding die (11) can push the coil into the stator core (8). A positioning jaw (12) capable of clamping the stator core (8) when the wire embedding die (11) pushes the coil is further provided on the frame (1).

2. The stator assembly device according to claim 1, characterized in that, The coil pushing plate (5) includes an annular connecting portion (51). At both ends of the connecting portion (51), a pushing portion (52) and a clamping portion (53) which are coaxial with the connecting portion (51) and are both annular are respectively fixed. The outer diameter of the clamping portion (53) is smaller than that of the pushing portion (52). The wire embedding spindle (2) has a columnar base (21). A plurality of positioning strips (23) are provided at one end of the base (21). The plurality of positioning strips (23) are circumferentially distributed along the base (21). The inner circumference of the pushing portion (52) has grooves (521) adapted to the plurality of positioning strips.

3. The stator assembly device according to claim 2, wherein The plumb bob manipulator (3) includes two clamping jaws (31) capable of approaching each other. The two clamping jaws (31) have arc-shaped clamping surfaces (311). When the two clamping surfaces (311) approach, they can be in contact with the outer circumference of the base (21) and clamp the base (21). A clamping plate (32) is fixed on the two clamping jaws (31). There is an insertion gap (33) between the clamping plate (32) and the clamping jaws (31). When the clamping jaws (31) clamp the base (21), the clamping plate (32) is inserted between the pushing portion (52) and the clamping portion (53), and the clamping portion (53) is inserted into the insertion gap (33).

4. A stator assembly device according to claim 3, characterized in that, The plumb bob manipulator (3) further includes two limiting arms (34) capable of approaching each other to surround the outer circumference formed by the plurality of positioning strips (23). One end of the two limiting arms (34) is bent to form an arc-shaped limiting portion (341). The concave surfaces of the two arc-shaped limiting portions (341) are arranged opposite to each other and there is a gap between them and the outer circumference formed by the plurality of positioning strips (23).

5. A stator assembly device according to claim 1, characterized in that, On opposite sides of the two first clamping jaws (41), there are arc-shaped gathering blocks (411), and the gathering blocks (411) have smooth transition surfaces (4111). When the stator core (8) is clamped by the positioning clamping jaws (12), while the two first clamping jaws (41) approach each other, the transition surfaces (4111) are located on the side away from the stator core (8). When the two gathering blocks (411) approach each other, the arc-shaped concave surfaces of the gathering blocks (411) enclose to form a gathering hole (412) with a diameter smaller than the outer diameter of the stator core (8).

6. A stator assembly device according to any one of claims 2 to 4, characterized in that The wire embedding manipulator (4) further includes a strip-shaped first clamping seat (61). Fixed blocks (62) are fixed on both sides of the first clamping seat (61). Two relatively arranged rotating blocks (63) that can be combined or separated are hinged on the fixed blocks (62). The two first clamping jaws (41) and the two second clamping jaws (42) are respectively connected to the corresponding rotating blocks (63) by bolts.

7. A stator assembly device according to claim 6, characterized in that, A second clamping seat (71) is rotatably connected above the first clamping seat (61). The second clamping seat (71) is fixedly connected with a sliding seat (72). A slider (73) capable of sliding along the length direction of the wire embedding die (11) is arranged on the sliding seat (72). A wire embedding guiding column (74) for limiting and guiding the coil is connected to the slider (73). The axial direction of the wire embedding guiding column (74) is consistent with the moving direction of the slider (73).

8. A stator assembly device according to claim 7, characterized in that, The other end of the wire embedding spindle (2) has a support rod (22). A plumb bob top rod (13) is hinged on the frame (1), and the plumb bob top rod (13) can rotate to abut against the end of the support rod (22).

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