A stator core splicing and welding device

Abstract

This utility model discloses a stator core splicing and welding device. The key technical features are: a welding table with a splicing basket on its top surface; a first annular groove on the bottom surface of the splicing basket; several first pressure sensors fixedly installed on the bottom surface of the first annular groove; a first cover plate fixedly installed on the top surface of the first pressure sensors; and a fixing plate on the top surface of the welding table. Through the coordinated use of the splicing basket, the first annular groove, the first pressure sensors, and the first cover plate, the first and second pressure sensors simultaneously detect the pressure of the stator core, achieving monitoring and control of the uniformity of the dual-plane pressure distribution of the stator core. It also monitors whether the height of the spliced ​​stator cores inside the splicing basket is consistent, ensuring that the stator core is in an ideal state of uniform length before welding, thereby reducing deformation caused by uneven length and improving the welding efficiency of the stator core.

Description

Technical Field

[0001] This utility model relates to the field of welding technology, specifically to a stator core assembly welding device. Background Technology

[0002] The stator core is an important component of the stator and a major part of the motor's magnetic circuit. It consists of parts such as sector-shaped plates, ventilation slots, positioning ribs, upper and lower toothed pressure plates, tension bolts, and support plates. The stator core is made by stamping silicon steel sheets into sector-shaped plates and stacking them on the positioning ribs. The positioning ribs are welded to the machine base ring plate through the support plate, and the core is pressed into a whole by the upper and lower toothed pressure plates and tension bolts.

[0003] In existing technologies, the stator core assembly process usually relies on mechanical fastening. This method applies pressure to press each segment of the stator core onto a reference bottom surface to achieve overall roundness. However, due to the presence of shorter segments in the stator core, these segments are often not effectively monitored during the pressing process and are easily overlooked. This leads to deviations in the height direction of the overall stator core. Such errors not only affect the assembly quality of the core itself but may also cause a series of engineering problems such as uneven air gap and decreased electromagnetic performance in the motor. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a stator core splicing and welding device.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: A stator core assembly welding device includes a welding table. A assembling basket is provided on the top surface of the welding table. A first annular groove is formed on the bottom surface of the assembling basket. A plurality of first pressure sensors are fixedly installed on the bottom surface of the first annular groove. A plurality of first cover plates are fixedly installed inside the first annular groove. A fixing plate is provided on the top surface of the welding table. A second annular groove is formed on the bottom surface of the fixing plate. A plurality of second pressure sensors are fixedly installed inside the second annular groove. A plurality of second cover plates are fixedly installed inside the second annular groove. Two welding robotic arms are fixedly installed on the top surface of the welding table, and the welding robotic arms are arranged symmetrically.

[0006] In order to enable the welding gun to directly and unobstructedly approach the weld position to be welded, realize radial direct welding, and ensure welding accessibility and quality, as a stator core splicing welding device of this utility model, preferably, the outer circular wall surface of the splicing basket is provided with a number of welding holes.

[0007] In order to make the inner circular wall of the conical plate fit tightly against the outer circular wall of the stator core, thereby removing the welding slag on the surface of the stator core, as a stator core assembly welding device of this utility model, preferably, the top surface of the assembly basket is provided with several conical plates.

[0008] In order to enable the threaded ring to connect with the internal thread of the fixing groove, thereby facilitating the disassembly and installation of the conical plate, as a stator core assembly welding device of this utility model, preferably, the inner circular wall of the assembly basket is provided with a fixing groove, the bottom surface of the fixing groove is provided with a thread, the inner circular wall of the fixing groove is threaded with a threaded ring, and the threaded ring is fixedly installed with the conical plate.

[0009] To allow the connecting plate to move up and down, thereby adjusting the distance between the second pressure sensor and the top surface of the stator core, a preferred stator core welding device of this invention includes a lifting assembly on the top surface of the welding table. The lifting assembly comprises: a base plate fixedly mounted on the top surface of the welding table; a support frame fixedly mounted on the top surface of the base plate; fixing holes on the top surfaces of the support frame and the base plate; a bearing fixedly mounted on the inner wall of the fixing hole; a threaded column fixedly mounted on the inner wall of the bearing; a connecting plate threadedly connected to the outer wall of the threaded column; a threaded hole inside the connecting plate; a large pulley fixedly mounted on the top surface of the threaded column; a first motor fixedly mounted on the top surface of the support frame; a small pulley fixedly mounted on one end of the drive shaft of the first motor; and belts wound around the outer walls of the small pulley and the large pulley.

[0010] To enable the several sector-shaped grooves to clamp and fix the bottom surface of the assembled round basket, thereby limiting the position of the assembled round basket and preventing displacement of the stator core during welding, as a stator core assembly welding device of this utility model, preferably, the top surface of the welding table is provided with a clamping assembly, the clamping assembly including: a clamping base, the clamping base being fixedly installed on the top surface of the welding table, several limiting bases being fixedly installed on the top surface of the clamping base, a moving block being movably sleeved inside the limiting base, a clamping column being fixedly installed on the top surface of the moving block, a sector-shaped groove being formed on the outer circular wall surface of the clamping column, a second motor being fixedly installed on the top surface of the clamping base, a clamping turntable being fixedly installed on the top surface of the second motor drive shaft, and a several arc-shaped grooves being formed on the top surface of the clamping turntable, the arc-shaped grooves being movably sleeved with the clamping column.

[0011] In summary, the present invention has the following main advantages: 1. By using the combination of the circular frame, the first annular groove, the first pressure sensor and the first cover plate, the first pressure sensor and the second pressure sensor can simultaneously detect the pressure of the stator core, thereby achieving monitoring and control of the uniformity of the dual-plane pressure distribution of the stator core, monitoring whether the height of the stator core inside the circular frame is consistent, ensuring that the stator core is in an ideal state of uniform length before welding, thereby reducing deformation caused by uneven length and improving the welding efficiency of the stator core; 2. By using the combination of the round frame and the welding hole, the welding gun can directly and unobstructedly approach the weld position that needs to be welded, realizing radial direct welding and ensuring weld accessibility and quality; 3. Through the coordinated use of belts, small pulleys, support frames, base plates, threaded columns, and large pulleys, the rotation drives the up-and-down movement, and the rotation of the threaded column drives the connecting plate to move up and down, so that the position of the connecting plate can be moved up and down, thereby adjusting the distance between the second pressure sensor and the top surface of the stator core. 4. Through the coordinated use of the clamping base, moving block, limiting base, clamping turntable, arc groove and clamping column, the second motor drives multiple clamping columns to move synchronously towards the center or release outward along the radial direction of the stator core, so that several fan-shaped grooves can clamp and fix the bottom surface of the round basket, thereby limiting the position of the round basket and preventing the stator core from shifting during the welding process. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a schematic diagram of the assembled round basket structure of this utility model; Figure 3 This is a schematic diagram of the first cover plate structure of this utility model; Figure 4 This is a schematic diagram of the first annular groove structure of this utility model; Figure 5 This is a schematic diagram of the support frame structure of this utility model; Figure 6 This is a schematic diagram of the connecting plate structure of this utility model; Figure 7 This is a schematic diagram of the fixing plate structure of this utility model; Figure 8 This is a schematic diagram of the second cover plate structure of this utility model; Figure 9 This is a schematic diagram of the clamping base structure of this utility model; Figure 10 This is a schematic diagram of the clamping turntable structure of this utility model.

[0013] Reference numerals: 1. Welding table; 2. Circular basket; 3. Welding hole; 4. First annular groove; 5. First pressure sensor; 6. First cover plate; 7. Conical plate; 8. Fixing groove; 9. Threaded ring; 10. Fixing plate; 11. Second annular groove; 12. Second pressure sensor; 13. Second cover plate; 14. Belt; 15. Small pulley; 16. Support frame; 17. Base plate; 18. Connecting plate; 19. Threaded column; 20. Large pulley; 21. Welding robotic arm; 22. Clamping base; 23. Moving block; 24. Limiting base; 25. Clamping turntable; 26. Arc groove; 27. Clamping column; 28. Fixing hole. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 7 and Figure 8 A stator core assembly welding device includes a welding table 1, a assembling basket 2 on the top surface of the welding table 1, a first annular groove 4 on the bottom surface of the assembling basket 2, several first pressure sensors 5 fixedly installed on the bottom surface of the first annular groove 4, several first cover plates 6 fixedly installed inside the first annular groove 4, a fixing plate 10 on the top surface of the welding table 1, a second annular groove 11 on the bottom surface of the fixing plate 10, several second pressure sensors 12 fixedly installed inside the second annular groove 11, several second cover plates 13 fixedly installed inside the second annular groove 11, two welding robotic arms 21 fixedly installed on the top surface of the welding table 1, the welding robotic arms 21 being symmetrically arranged, and several welding holes 3 on the outer circular wall of the assembling basket 2. By using the assembled circular frame 2, after the stator core is assembled into a circle inside the frame 2, the bottom surface of the stator core contacts the first pressure sensor 5 inside the frame 2, pressing the fixing plate 10 onto the top surface of the stator core. The top surface of the stator core then contacts the second pressure sensor 12, allowing the first pressure sensor 5 and the second pressure sensor 12 to simultaneously detect the pressure of the stator core. This monitors whether the height of the assembled stator core inside the frame 2 is consistent, ensuring that the stator core is in an ideal state of uniform length before welding, thereby reducing deformation caused by uneven length.

[0016] refer to Figure 1 , Figure 2 and Figure 3 The top surface of the round basket 2 is provided with several conical pieces 7. The inner circular wall of the round basket 2 is provided with a fixing groove 8. The bottom surface of the fixing groove 8 is provided with a thread. The inner circular wall of the fixing groove 8 is threaded with a threaded ring 9. The threaded ring 9 is fixedly installed with the conical pieces 7. With the conical plates 7 in place, when the workers remove the welded stator core, the conical plates 7 are made of elastic material, so that the inner circular wall surfaces of several conical plates 7 are tightly attached to the outer circular wall surfaces of the stator core, thereby removing the welding slag from the surface of the stator core. With the fixed groove 8 in place, the threaded ring 9 can be connected to the internal thread of the fixed groove 8, which facilitates the disassembly and installation of the conical plates 7.

[0017] refer to Figure 1 , Figure 5 and Figure 6 The top surface of the welding table 1 is provided with a lifting assembly, which includes: a base plate 17, the base plate 17 is fixedly installed on the top surface of the welding table 1, a support frame 16 is fixedly installed on the top surface of the base plate 17, the support frame 16 and the top surface of the base plate 17 are respectively provided with fixing holes 28, a bearing is fixedly installed on the inner circular wall of the fixing hole 28, a threaded column 19 is fixedly installed on the inner circular wall of the bearing, a connecting plate 18 is threadedly connected to the outer circular wall of the threaded column 19, a threaded hole is provided inside the connecting plate 18, a large pulley 20 is fixedly installed on the top surface of the threaded column 19, a first motor is fixedly installed on the top surface of the support frame 16, a small pulley 15 is fixedly installed at one end of the drive shaft of the first motor, and a belt 14 is wound around the outer circular wall of the small pulley 15 and the large pulley 20. Through the connecting plate 18, and using the first motor, when the first motor drive shaft rotates clockwise, it drives the small pulley 15 to rotate, the small pulley 15 drives the belt 14 to rotate, the belt 14 drives the large pulley 20 to rotate clockwise, and thus the threaded column 19 rotates clockwise, causing the connecting plate 18 to drive the fixed plate 10 to start moving upward. The second pressure sensor 12 inside the fixed plate 10 can move upward. When the first motor drive shaft rotates counterclockwise, the small pulley 15 drives the belt 14 to rotate counterclockwise, the large pulley 20 drives the threaded column 19 to rotate counterclockwise, and thus the second pressure sensor 12 starts moving downward until the second pressure sensor 12 can detect the pressure on the top surface of the stator core. By rotating the threaded column 19, the connecting plate 18 moves up and down, thereby adjusting the distance between the second pressure sensor 12 and the top surface of the stator core.

[0018] refer to Figure 1 , Figure 9 and Figure 10The top surface of the welding table 1 is provided with a clamping assembly, which includes: a clamping base 22, the clamping base 22 is fixedly installed on the top surface of the welding table 1, a plurality of limiting bases 24 are fixedly installed on the top surface of the clamping base 22, a moving block 23 is movably sleeved inside the limiting base 24, a clamping column 27 is fixedly installed on the top surface of the moving block 23, a fan-shaped groove is opened on the outer circular wall of the clamping column 27, a second motor is fixedly installed on the top surface of the clamping base 22, a clamping turntable 25 is fixedly installed on the top surface of the second motor drive shaft, a plurality of arc-shaped grooves 26 are opened on the top surface of the clamping turntable 25, and the arc-shaped grooves 26 are movably sleeved with the clamping column 27; The round basket 2 is placed on the top surface of the clamping turntable 25. When the second motor drives the shaft to rotate clockwise, the moving block 23 drives the clamping column 27 to rotate clockwise inside the arc groove 26. The arc groove 26 begins to move closer to the center point. By using the second motor, multiple clamping columns 27 are driven to move synchronously towards the center or release outward along the radius of the stator core, so that several fan-shaped grooves can clamp and fix the bottom surface of the round basket 2, thereby limiting the position of the round basket 2 and preventing the stator core from shifting during the welding process.

[0019] Working principle: Please refer to Figures 1-10 As shown, by setting up the circular frame 2, after the stator core is assembled into a circle inside the circular frame 2, the bottom surface of the stator core contacts the first pressure sensor 5 inside the circular frame 2, and the fixing plate 10 is pressed on the top surface of the stator core. The top surface of the stator core contacts the second pressure sensor 12, so that the first pressure sensor 5 and the second pressure sensor 12 can simultaneously detect the pressure of the stator core and monitor whether the height of the assembled stator core inside the circular frame 2 is consistent. This ensures that the stator core is in an ideal state of uniform length before welding, thereby reducing deformation caused by uneven length and improving the welding efficiency of the stator core.

[0020] Through the connecting plate 18, and using the first motor, when the first motor drive shaft rotates clockwise, it drives the small pulley 15 to rotate, the small pulley 15 drives the belt 14 to rotate, the belt 14 drives the large pulley 20 to rotate clockwise, and thus the threaded column 19 rotates clockwise, causing the connecting plate 18 to drive the fixed plate 10 to start moving upward. The second pressure sensor 12 inside the fixed plate 10 can move upward. When the first motor drive shaft rotates counterclockwise, the small pulley 15 drives the belt 14 to rotate counterclockwise, the large pulley 20 drives the threaded column 19 to rotate counterclockwise, and thus the second pressure sensor 12 starts moving downward until the second pressure sensor 12 can detect the pressure on the top surface of the stator core. By rotating the threaded column 19, the connecting plate 18 moves up and down, thereby adjusting the distance between the second pressure sensor 12 and the top surface of the stator core.

[0021] The round basket 2 is placed on the top surface of the clamping turntable 25. When the second motor drives the shaft to rotate clockwise, the moving block 23 drives the clamping column 27 to rotate clockwise inside the arc groove 26. The arc groove 26 begins to move closer to the center point. By using the second motor, multiple clamping columns 27 are driven to move synchronously towards the center or release outward along the radius of the stator core, so that several fan-shaped grooves can clamp and fix the bottom surface of the round basket 2, thereby limiting the position of the round basket 2 and preventing the stator core from shifting during the welding process.

[0022] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A stator core splicing and welding device, characterized in that, include: A welding table (1) is provided with a circular basket (2) on its top surface. A first circular groove (4) is provided on the bottom surface of the circular basket (2). Several first pressure sensors (5) are fixedly installed on the bottom surface of the first circular groove (4). Several first cover plates (6) are fixedly installed inside the first circular groove (4). A fixing plate (10) is provided on the top surface of the welding table (1). A second circular groove (11) is provided on the bottom surface of the fixing plate (10). Several second pressure sensors (12) are fixedly installed inside the second circular groove (11). Several second cover plates (13) are fixedly installed inside the second circular groove (11). Two welding robotic arms (21) are fixedly installed on the top surface of the welding table (1). The welding robotic arms (21) are arranged symmetrically.

2. The stator core splicing and welding device according to claim 1, characterized in that: The outer circular wall of the assembled round basket (2) has several welding holes (3).

3. The stator core splicing and welding device according to claim 1, characterized in that, The top surface of the circular basket (2) is provided with several conical pieces (7).

4. The stator core splicing and welding device according to claim 3, characterized in that, The inner circular wall of the circular basket (2) is provided with a fixing groove (8), the inner circular wall of the fixing groove (8) is provided with a thread, and the inner circular wall of the fixing groove (8) is threadedly connected with a threaded ring (9), and the threaded ring (9) is fixedly installed with the conical plate (7).

5. The stator core splicing and welding device according to claim 1, characterized in that, The top surface of the welding table (1) is provided with a lifting assembly, which includes: A base plate (17) is fixedly installed on the top surface of the welding table (1). A support frame (16) is fixedly installed on the top surface of the base plate (17). Fixing holes (28) are respectively opened on the top surfaces of the support frame (16) and the base plate (17). A bearing is fixedly installed on the inner circular wall of the fixing hole (28). A threaded column (19) is fixedly installed on the inner circular wall of the bearing. A connecting plate (18) is threadedly connected to the outer circular wall of the threaded column (19). A threaded hole is opened inside the connecting plate (18). A large pulley (20) is fixedly installed on the top surface of the threaded column (19). A first motor is fixedly installed on the top surface of the support frame (16). A small pulley (15) is fixedly installed at one end of the drive shaft of the first motor. A belt (14) is wound around the outer circular wall of the small pulley (15) and the large pulley (20).

6. The stator core splicing and welding device according to claim 1, characterized in that, The top surface of the welding table (1) is provided with a clamping assembly, the clamping assembly comprising: A clamping base (22) is fixedly installed on the top surface of the welding table (1). Several limiting bases (24) are fixedly installed on the top surface of the clamping base (22). A moving block (23) is movably sleeved inside the limiting base (24). A clamping column (27) is fixedly installed on the top surface of the moving block (23). A fan-shaped groove is opened on the outer circular wall of the clamping column (27). A second motor is fixedly installed on the top surface of the clamping base (22). A clamping turntable (25) is fixedly installed on the top surface of the second motor drive shaft. Several arc-shaped grooves (26) are opened on the top surface of the clamping turntable (25). The arc-shaped grooves (26) are movably sleeved with the clamping column (27).

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