Stator wire pressing device

Abstract

The application provides a stator wire pressing device. The stator wire pressing device comprises a lifting driving mechanism, a wire hanging pin assembly, a wire locking pin assembly and a wire pressing mechanism. The lifting driving mechanism comprises a lifting driving motor and a vertical sliding table. The lifting driving motor is used to drive the vertical sliding table to lift. The wire hanging pin assembly, the wire locking pin assembly and the wire pressing mechanism are all installed on the vertical sliding table. The wire pressing mechanism comprises a wire pressing cylinder and a wire pressing plate. The wire pressing cylinder is used to drive the wire pressing plate to press the wire. The wire hanging pin assembly and the wire locking pin assembly are integrated on the same vertical sliding table in the application. The wire hanging pin assembly is used to lift the wire, and the wire locking pin assembly is used to lock the wire. The coordinated action of the double pins is realized, the bending moment force in the stator wire pressing process is eliminated, and the product qualification rate is improved.

Description

Technical Field

[0001] This application relates to the field of stator wire pressing devices, and more particularly to a stator wire pressing device. Background Technology

[0002] With the continuous development of technology, the use of automobiles is increasing, and the requirements for automobiles are also constantly rising. Among these requirements, automotive motors are constantly developing towards higher performance, higher efficiency, and higher power density. The stator is a key component of the motor, and stator manufacturing in electric drives is a cutting-edge technology in the industry. The copper wire pressing process is a crucial step in stator manufacturing, requiring not only high precision in copper wire positioning but also secure locking between the copper wires. If the stator wire pressing device does not properly control the copper wires, slippage or even deformation can occur, reducing the product qualification rate. The industry commonly uses a single-layer pin insertion scheme. However, because the force point for pressing the wires is at the top of the stator's crown end, the copper wires are subjected to bending moment forces during the pressing process, which can easily lead to problems such as wire bending and misalignment.

[0003] Therefore, it is necessary to provide an improved stator wire pressing device to solve the above problems. Utility Model Content

[0004] This application provides a stator pressing device that can eliminate bending moment force and improve product qualification rate.

[0005] This application provides a stator wire pressing device, including: a lifting drive mechanism, a wire hanging pin assembly, a wire locking pin assembly, and a wire pressing mechanism. The lifting drive mechanism includes a lifting drive motor and a vertical slide table. The lifting drive motor is used to drive the vertical slide table to lift and lower. The wire hanging pin assembly, the wire locking pin assembly, and the wire pressing mechanism are all mounted on the vertical slide table. The wire pressing mechanism includes a wire pressing cylinder and a wire pressing plate. The wire pressing cylinder is used to drive the wire pressing plate to press the wire.

[0006] Furthermore, the wire pressing cylinder is positioned above the wire pressing plate to abut against the wire pressing plate; the stator wire pressing device also includes multiple reaction cylinders, which are positioned on the side of the wire pressing plate to clamp the wire pressing plate.

[0007] Furthermore, the stator pressing device also includes a frame and a transverse drive mechanism, wherein the lifting drive mechanism and the transverse drive mechanism are mounted on the frame; the transverse drive mechanism includes a transverse drive motor and a transverse slide, wherein the transverse drive motor is used to drive the transverse slide to move transversely.

[0008] Furthermore, the hanging pin assembly includes a pin cover plate, a hanging pin disk, a hanging pin drive disk, and a lifting motor. The pin cover plate covers the hanging pin disk, the hanging pin drive disk is sleeved around the hanging pin disk, and the lifting motor is connected to the hanging pin drive disk via gears.

[0009] Furthermore, the wire locking pin assembly includes a lower pin cover plate, a wire locking pin disk, a wire locking pin drive disk, and a wire locking motor. The lower pin cover plate covers the wire locking pin disk, the wire locking pin drive disk is sleeved around the wire locking pin disk, and the wire locking motor is connected to the wire locking pin drive disk via gears.

[0010] Furthermore, the stator wire pressing device also includes a pin holder, the wire hanging pin disk and the wire locking pin disk are arranged opposite to each other and respectively locked on the upper and lower sides of the pin holder, and the periphery of the pin holder is simultaneously engaged with the wire hanging pin drive disk and the wire locking pin drive disk.

[0011] Furthermore, the wire pressing mechanism also includes a pressing head fixed below the wire pressing plate. Multiple copper wires are provided below the pressing head. Each copper wire includes a crown end and a soldering end arranged opposite to each other. The pressing head is located above the crown end.

[0012] Furthermore, the stator pressing device also includes a centering disk coaxially arranged with the lifting drive motor, a plurality of copper wires surrounding the centering disk, a stator core being provided below the copper wires, and the plurality of copper wires and the stator core being coaxially arranged with the centering disk.

[0013] Furthermore, the wire-hanging pin tray includes a plurality of wire-hanging pins arranged around the centering tray, with a gap between two adjacent wire-hanging pins, and the copper wire is held in the gap; the number of wire-hanging pins is 54.

[0014] Furthermore, the wire locking pin tray includes a plurality of wire locking pins arranged around the centering tray; the number of the wire locking pins is 54; one end of the wire locking pin near the central axis of the centering tray abuts against the copper wire.

[0015] This application integrates a wire-hanging pin assembly and a wire-locking pin assembly onto the same vertical slide. The wire-hanging pin assembly is used to lift the wire, and the wire-locking pin assembly is used to lock the wire. This achieves the coordinated action of the two pins, eliminates the bending moment force during the stator wire pressing process, and improves the product qualification rate. Attached Figure Description

[0016] Figure 1 This is a perspective view of a stator wire pressing device according to an exemplary embodiment of this application.

[0017] Figure 2 yes Figure 1 The front view of the stator wire pressing device shown.

[0018] Figure 3 yes Figure 1 The right view of the stator wire pressing device shown.

[0019] Figure 4 yes Figure 1 Left view of the stator wire pressing device shown.

[0020] Figure 5 This is a perspective view of the stator wire clamping device of this application assembled with the wire hanging pin assembly and the wire locking pin assembly onto the vertical slide.

[0021] Figure 6 yes Figure 5 The diagram shows a perspective view of the hanging pin assembly and the locking pin assembly.

[0022] Figure 7 yes Figure 6 The diagram shown does not include the 3D view of the wire-hanging pin assembly and the wire-locking pin assembly, which does not include the wire-lifting motor and the wire-locking motor.

[0023] Figure 8 yes Figure 7 The diagram shown is a perspective view of the stator wire pressing device without a pin cover plate.

[0024] Figure 9 This is a perspective view of the wire-hanging pin tray, the wire-locking pin tray, and the assembled copper wire of this application.

[0025] Figure 10 This is a perspective view of the hanging pin tray of this application.

[0026] Figure 11 yes Figure 8 The diagram shown is a perspective view of the stator wire pressing device without the pin cover plate and pin holder.

[0027] Figure 12 yes Figure 7 The hanging pin assembly and locking pin assembly shown do not include cross-sectional views of the lifting motor and locking motor.

[0028] Explanation of icon numbers: 10. Lifting drive mechanism; 11. Lifting drive motor; 12. Vertical slide table; 13. Vertical slide rail; 20. Wire hanging pin assembly; 21. Pin upper cover plate; 211. Arc groove; 22. Wire hanging pin disc; 221. Wire hanging pin; 2211. Main body; 2212. Extension; 2213. Hole; 2214. Roller; 222. Gap; 23. Wire hanging pin drive disc; 24. Wire lifting motor; 25. Gear; 30. Wire locking pin assembly; 31. Pin lower cover plate; 311. Arc groove; 32. Wire locking pin disc; 321. Wire locking pin; 33. Wire locking pin drive disc; 34. Wire locking motor; 35. Gear; 40. Wire pressing mechanism; 41. Wire pressing cylinder; 42. Wire pressing plate; 43. Pressing head; 50. Reaction cylinder; 60. Frame; 61. Frame body; 62. Support leg; 70. Horizontal movement drive mechanism; 71. Horizontal movement drive motor; 72. Horizontal movement slide; 80. Pin holder; 90. Copper wire; 91. Crown end; 92. Welding end; 100. Centering disc; 200. Stator core. Detailed Implementation

[0029] The technical solutions in the embodiments (or "implementations") of this application will be clearly and completely described herein with reference to the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0030] If the embodiments of this application contain terms relating to directional indications or positional relationships (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationships and movement of the components in a specific posture (as shown in the attached figures); if the specific posture changes, the directional indications or positional relationships will also change accordingly. Furthermore, the terms "first" and "second" used in the embodiments of this application are only for descriptive convenience and should not be construed as indicating or implying relative importance.

[0031] See Figures 1 to 4 As shown, this application provides a stator wire pressing device, including a lifting drive mechanism 10, a wire hanging pin assembly 20, a wire locking pin assembly 30, a wire pressing mechanism 40, a reaction cylinder 50, a frame 60, and a lateral movement drive mechanism 70. The lifting drive mechanism 10 and the lateral movement drive mechanism 70 are slidably connected to the frame 60. The lifting drive mechanism 10 is raised and lowered relative to the frame 60, and the lateral movement drive mechanism 70 is laterally moved relative to the frame 60. The lifting drive mechanism 10 is used to drive the wire hanging pin assembly 20, the wire locking pin assembly 30, and the wire pressing mechanism 40 to the operating position. The wire pressing mechanism 40 is located above the wire hanging pin assembly 20 and the wire locking pin assembly 30. The reaction cylinder 50 is located on the side of the wire pressing mechanism 40 for pressing the wire pressing mechanism 40.

[0032] The lifting drive mechanism 10 includes a lifting drive motor 11, a vertical slide 12, and a vertical slide rail 13. The vertical slide rail 13 is mounted on the frame 60. The wire-attaching pin assembly 20, the wire-locking pin assembly 30, and the wire-pressing mechanism 40 are all mounted on the vertical slide 12. The lifting drive motor 11 is located above the vertical slide rail 13, and its telescopic end is connected to the vertical slide 12. The lifting drive motor 11 is used to drive the vertical slide 12 to move up and down along the vertical slide rail 13. In the embodiments of this application, the lifting drive motor 11 is a servo motor. Alternatively, the lifting drive motor 11 can also be a hydraulic cylinder or a stepper motor to achieve the same lifting function.

[0033] See Figures 5 to 8 As shown, the thread-holding pin assembly 20 includes a pin cover plate 21, a thread-holding pin tray 22, a thread-holding pin drive tray 23, a thread-lifting motor 24, and a gear 25. The pin cover plate 21 covers the thread-holding pin tray 22. The thread-holding pin drive tray 23 is sleeved around the thread-holding pin tray 22. The thread-lifting motor 24 is connected to the thread-holding pin drive tray 23 via the gear 25.

[0034] See Figure 9 and Figure 10 As shown, the pin cover plate 21 is disc-shaped and has several arc-shaped grooves 211 arranged at intervals along the central axis of the pin cover plate 21. There are 27 arc-shaped grooves 211. The wire-hanging pin tray 22 includes multiple wire-hanging pins 221, with a gap 222 between adjacent wire-hanging pins 221. The stator copper wire 90 is secured within the gap 222. There are 54 wire-hanging pins 221. These 54 wire-hanging pins 221 are evenly distributed circumferentially along the pin cover plate 21, providing a high-density wire-lifting point to ensure uniform force on each copper wire 90. Simultaneously, the gap 222 design allows for precise insertion of the copper wire 90, preventing slippage during wire lifting and improving positioning accuracy and yield.

[0035] The wire-holding pin 221 includes a main body 2211 and an extension 2212 extending from the main body 2211 toward the central axis of the wire-holding pin tray 22. The diameter of the extension 2212 is smaller than the diameter of the main body 2211. The extension 2212 is inserted between two adjacent copper wires 90. The main body 2211 has holes 2213, and the distances of the holes 2213 on two adjacent wire-holding pins 221 from the central axis of the wire-holding pin tray 22 are different. The wire-holding pin tray 22 also has a plurality of rollers 2214, which are disposed within the holes 2213. Two adjacent rollers 2214 are engaged within arc-shaped grooves 211.

[0036] The thread-holding pin drive disk 23 is annular and sleeved around the thread-holding pin disk 22. A gear 25 is fixed to the thread-holding pin drive disk 23. The thread-lifting motor 24 drives the gear 25 to rotate, causing the thread-holding pin drive disk 23 to rotate and push the thread-holding pins 221 of the thread-holding pin disk 22 towards the central axis of the thread-holding pin disk 22. The thread-holding pins 221 are inserted between two adjacent copper wires 90. The gear 25 transmission ensures that the thread-lifting motor 24 accurately drives the thread-holding pin disk 22, achieving a smooth thread-lifting action for the copper wires 90.

[0037] See Figure 11 As shown, the wire locking pin assembly 30 includes a lower pin cover plate 31, a wire locking pin disk 32, a wire locking pin drive disk 33, a wire locking motor 34, and a gear 35. The lower pin cover plate 31 covers the wire locking pin disk 32, the wire locking pin drive disk 33 is sleeved around the wire locking pin disk 32, and the wire locking motor 34 is connected to the wire locking pin drive disk 33 through the gear 35.

[0038] The lower cover plate 31 is disc-shaped and has several arc-shaped grooves 311 arranged at intervals along the central axis of the lower cover plate 31. There are 27 arc-shaped grooves 311. The locking pin tray 32 includes multiple locking pins 321. There are 54 locking pins 321. The 54 locking pins 321 are evenly distributed circumferentially along the lower cover plate 31.

[0039] The locking pin drive disk 33 is annular and sleeved around the locking pin disk 32. A gear 35 is fixed to the locking pin disk 32. The locking motor 34 drives the gear 35 to rotate, causing the locking pin drive disk 33 to rotate and push the locking pins 321 of the locking pin disk 32 towards the central axis of the locking pin disk 32. One end of the locking pin 321, near the central axis of the lower cover plate 31, abuts against the copper wire 90. The 54 locking pins 321 laterally press against the copper wire 90, providing complete locking coverage and ensuring a secure lock on the copper wire 90.

[0040] The wire pressing mechanism 40 includes a wire pressing cylinder 41, a wire pressing plate 42, and a pressing head 43. The wire pressing cylinder 41 drives the wire pressing plate 42 to press the wires. The wire pressing cylinder 41 is positioned above the wire pressing plate 42 to press against it. The pressing head 43 is fixed below the wire pressing plate 42. Multiple copper wires 90 are positioned below the pressing head 43. Each copper wire 90 includes a crown end 91 and a welding end 92 arranged opposite to each other. The pressing head 43 is positioned above the crown end 91. The pressing head 43 acts directly on the crown end 91 of the copper wire 90, providing concentrated downward pressure, avoiding bending moment caused by force point displacement, and reducing the risk of bending.

[0041] According to other embodiments of this application, the pressure head 43 is replaced with an adjustable pressure block, and a buffer pad is added to the pressure head 43 at the pressure position corresponding to the crown end 91. Furthermore, the pressure plate 42 and the pressure head 43 can be integrated into a single design to reduce connection points.

[0042] Multiple counterforce cylinders 50 are located on the side of the wire pressing plate 42 for clamping the wire pressing plate 42. The counterforce cylinders provide lateral clamping force to prevent the wire pressing plate 42 from moving backward or shifting during the wire pressing process, ensuring that the wire pressing plate 42 stably presses the crown end 91 of the copper wire 90, avoiding the copper wire 90 from sliding or deforming, thereby improving the wire pressing accuracy and equipment stability.

[0043] According to an embodiment of this application, there are two reaction cylinders 50, respectively disposed on both sides of the wire pressing plate 42. Alternatively, the reaction cylinders 50 can be replaced by springs and damping systems or mechanical clamps to provide lateral clamping force to prevent the wire pressing plate 42 from retracting. According to other embodiments of this application, the multiple reaction cylinders 50 can also be replaced by a single annular clamping mechanism, arranged circumferentially around the wire pressing plate 42.

[0044] The frame 60 includes a frame body 61 and two support legs 62 supporting the frame body 61. A lifting drive mechanism 10 and a traverse drive mechanism 70 are mounted on the frame body 61. The traverse drive mechanism 70 includes a traverse drive motor 71 and a traverse slide 72. The traverse drive motor 71 drives the traverse slide 72 to move laterally. The traverse drive mechanism 70 enables the lateral movement of the device, facilitating positioning and adaptation to different workstations, thus improving equipment adaptability and operational efficiency.

[0045] See Figure 12 As shown, the stator wire clamping device also includes a pin holder 80, with a wire-hanging pin tray 22 and a wire-locking pin tray 32 positioned opposite each other and respectively secured to the upper and lower sides of the pin holder 80. The periphery of the pin holder 80 simultaneously engages with both the wire-hanging pin drive tray 23 and the wire-locking pin drive tray 33. The pin holder 80 integrates the wire-hanging pin tray 22 and the wire-locking pin tray 32, ensuring synchronized alignment of the wire-hanging and wire-locking actions and preventing copper wire damage caused by component misalignment.

[0046] The stator wire pressing device also includes a centering disk 100 coaxially arranged with the lifting drive motor 11, and multiple copper wires 90 surrounding the centering disk 100. A stator core 200 is located below the copper wires 90, and both the copper wires 90 and the stator core 200 are coaxially arranged with the centering disk 100. Multiple wire-hanging pins 221 and multiple wire-locking pins 321 are arranged around the centering disk 100. The centering disk 100 ensures that the copper wires 90, the stator core 200, and the lifting drive motor 11 are coaxial, improving pressing accuracy and preventing the copper wires 90 from skewing or deforming.

[0047] The working steps of the stator wire pressing device of this application are as follows: First, the horizontal movement drive motor 71 drives the horizontal movement slide 72 to above the stator core 200. The lifting drive motor 11 drives the vertical slide 12 to lower the wire hanging pin assembly 20, the wire locking pin assembly 30, and the wire pressing mechanism 40 to the operating position. The wire lifting motor 24 drives the wire hanging pin drive disk 23 to rotate, so that the wire hanging pin 221 of the wire hanging pin disk 22 inserts into the copper wire 90, and the wire hanging pin disk 22 moves upward and lifts the copper wire 90 upward.

[0048] The wire-locking motor 34 drives the wire-locking pin drive disk 33 to rotate, which in turn pushes the wire-locking pin 321 of the wire-locking pin disk 32 to move inward, thus laterally pressing the copper wire 90. The wire-pressing cylinder 41 drives the wire-pressing plate 42 and the pressing head 43 to press the crown end 91 of the copper wire 90, while the reaction cylinder 50 laterally pushes against the wire-pressing plate 42 to prevent it from retracting. The lifting drive motor 11 drives the vertical slide table 12 to the stator core 200, inserting the copper wire 90 into the stator core 200.

[0049] This application integrates the hanging pin assembly 20 and the locking pin assembly 30 on the same vertical slide 12. The hanging pin assembly 20 is used to lift the wire, and the locking pin assembly 30 is used to lock the wire. This achieves the coordinated action of the two pins, eliminates the bending moment force during the stator wire pressing process, and improves the product qualification rate.

[0050] It should be noted that the technical solutions or features described in the above embodiments can be combined or supplemented with each other without conflict. The scope of protection of this application is not limited to the precise structures described in the above embodiments and shown in the accompanying drawings; all modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A stator wire pressing device, characterized in that, include: The device includes a lifting drive mechanism, a wire hanging pin assembly, a wire locking pin assembly, and a wire pressing mechanism. The lifting drive mechanism includes a lifting drive motor and a vertical slide table. The lifting drive motor drives the vertical slide table to move up and down. The wire hanging pin assembly, the wire locking pin assembly, and the wire pressing mechanism are all mounted on the vertical slide table. The wire pressing mechanism includes a wire pressing cylinder and a wire pressing plate. The wire pressing cylinder drives the wire pressing plate to press the wire.

2. The stator wire pressing device according to claim 1, characterized in that, The wire pressing cylinder is located above the wire pressing plate to abut against the wire pressing plate; the stator wire pressing device also includes multiple reaction cylinders, which are located on the side of the wire pressing plate to clamp the wire pressing plate.

3. The stator wire pressing device according to claim 1, characterized in that, The stator pressing device further includes a frame and a transverse drive mechanism. The lifting drive mechanism and the transverse drive mechanism are mounted on the frame. The transverse drive mechanism includes a transverse drive motor and a transverse slide. The transverse drive motor is used to drive the transverse slide to move transversely.

4. The stator wire pressing device according to claim 1, characterized in that, The thread-hanging pin assembly includes a pin cover plate, a thread-hanging pin disk, a thread-hanging pin drive disk, and a thread-lifting motor. The pin cover plate covers the thread-hanging pin disk, the thread-hanging pin drive disk is sleeved around the thread-hanging pin disk, and the thread-lifting motor is connected to the thread-hanging pin drive disk via gears.

5. The stator wire pressing device according to claim 4, characterized in that, The wire locking pin assembly includes a pin lower cover plate, a wire locking pin disk, a wire locking pin drive disk, and a wire locking motor. The pin lower cover plate covers the wire locking pin disk, the wire locking pin drive disk is sleeved around the wire locking pin disk, and the wire locking motor is connected to the wire locking pin drive disk via gears.

6. The stator wire pressing device according to claim 5, characterized in that, The stator wire pressing device also includes a pin holder, the wire hanging pin disk and the wire locking pin disk are arranged opposite to each other and respectively locked on the upper and lower sides of the pin holder, and the periphery of the pin holder is simultaneously engaged with the wire hanging pin drive disk and the wire locking pin drive disk.

7. The stator wire pressing device according to claim 5, characterized in that, The wire pressing mechanism also includes a pressing head fixed below the wire pressing plate. Multiple copper wires are provided below the pressing head. Each copper wire includes a crown end and a soldering end arranged opposite to each other. The pressing head is located above the crown end.

8. The stator wire pressing device according to claim 7, characterized in that, The stator pressing device also includes a centering disk coaxially arranged with the lifting drive motor, a plurality of copper wires surrounding the centering disk, a stator core being provided below the copper wires, and the plurality of copper wires and the stator core being coaxially arranged with the centering disk.

9. The stator wire pressing device according to claim 8, characterized in that, The wire-hanging pin tray includes a plurality of wire-hanging pins arranged around the centering tray, with a gap between two adjacent wire-hanging pins, and the copper wire is held in the gap; the number of wire-hanging pins is 54.

10. The stator wire pressing device according to claim 8, characterized in that, The wire locking pin tray includes a plurality of wire locking pins arranged around the centering tray; the number of the wire locking pins is 54; one end of the wire locking pin near the central axis of the centering tray abuts against the copper wire.

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