A centrifugal fan impeller manufacturing welding tool

Abstract

The present application relates to the technical field of welding, and discloses a centrifugal fan impeller manufacturing welding tool, the whole adjusting ring of which is in meshing transmission with the clamping inner ring, so that unified angle zero returning and accurate adjustment of multiple groups of blades can be quickly realized, the meshing and disengaging of which are realized by cooperating with the magnetite and spring structure, so that the rigid constraint during welding can be avoided to affect the benign deformation of the blades, the positioning accuracy and clamping efficiency of the blades are significantly improved, the displacement and angle deformation of the blades during the welding process can be sensed in real time by the end face tooth disc, rotating ring and friction transmission structure of the adjusting mechanism, the radial position deviation and angle deflection of the blades are synchronously compensated through the linkage of the driving rotating rod and multiple groups of driven rotating rods, the position and angle of all the blades after welding are ensured to be highly consistent, and the dynamic balance performance of the impeller is effectively improved.

Description

Technical Field

[0001] This invention relates to the field of welding technology, specifically to a welding fixture for manufacturing centrifugal fan impellers. Background Technology

[0002] As a core component of the centrifugal fan, the welding precision of the blades and impeller plate directly affects the fan's operating efficiency, dynamic balance stability, and service life.

[0003] Traditional impeller welding often uses manual positioning and simple clamping methods. When clamping blades, it is difficult to achieve rapid and uniform angle zeroing and precise angle adjustment, which can easily lead to problems such as large blade angle deviation and uneven distribution. During the welding process, the blades are prone to radial displacement and angular deflection due to heat. Existing tooling cannot compensate for welding deformation in time, resulting in poor consistency between blade position and angle, requiring repeated correction and low production efficiency. Meanwhile, conventional fixtures can only achieve independent adjustment of a single blade and cannot control multiple sets of blades in a coordinated manner. They have poor adaptability and insufficient versatility, making it difficult to meet the high-precision and high-efficiency welding requirements in mass production, which restricts the overall manufacturing quality and production efficiency of centrifugal fan impellers. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a welding fixture for manufacturing centrifugal fan impellers, which has advantages such as [missing information] and solves a series of problems.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a welding fixture for manufacturing centrifugal fan impellers, comprising, A tilting frame, on one side of which a mechanical welding gun is fixedly installed, and a turntable is rotatably connected to the output end of the tilting frame. A locking block is slidably connected to the top of the turntable, and an impeller plate is locked to the top of the locking block. A clamping mechanism, comprising a plurality of clamping outer rings, one side of which is rotatably connected to a clamping inner ring, a spring plate fixedly connected inside the clamping inner ring, a blade being clamped inside the spring plate, and the interior of the plurality of clamping outer rings being movably connected to the same integral adjusting ring, all of which are adapted to the plurality of clamping inner rings; The adjustment mechanism includes an electric telescopic rod fixedly connected to the top of the turntable. The telescopic end of the electric telescopic rod is fixedly connected to a ring frame. Several driven rotating rods and one driving rotating rod are movably connected inside the ring frame. The several driven rotating rods and one driving rotating rod are circumferentially distributed inside the ring frame. The several driven rotating rods and one driving rotating rod are all fixedly connected to the outside of the adjacent clamping outer ring.

[0006] Preferably, the clamping mechanism further includes a retaining spring fixedly connected inside the clamping outer ring, the top of the retaining spring being fixedly connected to the bottom of the overall adjusting ring, and magnets being fixedly connected to the top of the overall adjusting ring and the top of the inner wall of the clamping outer ring, and a rotating frame being fixedly connected to the outside of the clamping outer ring, and the clamping inner ring being rotatably connected inside the rotating frame.

[0007] Preferably, a triangular groove is provided on one side of the inner clamping ring, and a first meshing tooth is fixedly connected inside the triangular groove. A protrusion is fixedly connected to the bottom of the overall adjusting ring inside the outer clamping ring, and the protrusion is adapted to the bottom of the triangular groove. A second meshing tooth is fixedly connected inside the overall adjusting ring inside the outer clamping ring, and the second meshing tooth is adapted to the adjacent first meshing tooth.

[0008] Preferably, the adjustment mechanism further includes a first end face gear disk fixedly connected to the bottom of the inner wall of the ring frame. A plurality of sliding frames are slidably connected to the bottom of the inner wall of the ring frame. The plurality of sliding frames are rotatably sleeved on the outside of adjacent driven rotating rods and driving rotating rods. A driving gear ring is rotatably sleeved on the outside of the driving rotating rod. The outside of the driving gear ring meshes with the top of the first end face gear disk.

[0009] Preferably, a plurality of retaining rods are fixedly connected to the bottom of the inner wall of the ring frame, a retaining platform is fixedly connected to the outside of the retaining rods, a first rotating ring and a second rotating ring are slidably connected to the top of the retaining platform, and a meshing wheel is rotatably connected to the top of the retaining rods, the outside of the meshing wheel meshing with the outside of the first rotating ring and the inside of the second rotating ring.

[0010] Preferably, the outer side of the active gear ring meshes with the bottom of the first rotating ring, a second end face gear disk is fixedly connected to the bottom of the inner wall of the ring frame, a number of driven rotating rods are rotatably sleeved with driven gear rings, and the outer side of the number of driven gear rings meshes with the top of the second end face gear disk.

[0011] Preferably, the ring frame has two friction rings inside, the bottom friction ring is rotatably connected inside the ring frame, and the top friction ring is fixedly connected to the top of the inner wall of the ring frame. A number of driven rotating rods are fixedly sleeved with driven wheels, and each driven wheel abuts against the two friction rings.

[0012] Preferably, a connecting ring is rotatably connected to the outside of the active rotating rod, and an abutting wheel is rotatably connected to the outside of the connecting ring. The abutting wheel abuts against the top of the active rotating rod and the bottom friction ring, respectively.

[0013] Compared with the prior art, the present invention provides a welding fixture for manufacturing centrifugal fan impellers, which has the following beneficial effects: 1. This invention enables rapid and precise adjustment of multiple sets of blades to a uniform angle by meshing the overall adjusting ring and the clamping inner ring. The meshing and disengaging mechanism, combined with the magnet and spring structure, avoids the rigid constraints during welding from affecting the benign deformation of the blades, and significantly improves the blade positioning accuracy and clamping efficiency.

[0014] 2. This invention, by relying on the end face toothed disc, rotating ring and friction transmission structure of the adjustment mechanism, can sense the displacement and angular deformation of the blades in real time during the welding process. By linking multiple sets of driven rotating rods with the active rotating rod, it can synchronously compensate for the radial position deviation and angular deflection of the blades, ensuring that the position and angular height of all blades are consistent after welding, and effectively improving the dynamic balance performance of the impeller. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the card block portion of the present invention; Figure 3 This is a three-dimensional structural diagram of the platform portion of the present invention; Figure 4 This is a three-dimensional structural diagram of the triangular groove portion of the present invention; Figure 5 This is a three-dimensional structural diagram of the protrusion portion of the present invention; Figure 6 This is a three-dimensional structural diagram of the active rotating rod part of the present invention; Figure 7 This is a three-dimensional structural diagram of the driven rotating rod part of the present invention.

[0016] In the diagram: 1. Tilting frame; 2. Mechanical welding torch; 3. Turntable; 4. Clamping block; 5. Electric telescopic rod; 6. Ring frame; 7. Adjustment mechanism; 8. Impeller plate; 9. Blade; 10. Clamping mechanism; 11. Clamping outer ring; 12. Clamping inner ring; 13. Spring plate; 14. Rotating frame; 15. Triangular groove; 16. First meshing tooth; 17. Overall adjusting ring; 18. Holding spring; 19. Magnet; 20. Handle; 21. Protrusion; 22. Second meshing tooth; 23. First end face gear plate; 24. Sliding frame; 25. Driving rod; 26. Driving gear ring; 27. Holding rod; 28. Holding platform; 29. ​​First rotating ring; 30. Second rotating ring; 31. Meshing wheel; 32. Driven rod; 33. Driven gear ring; 34. Second end face gear plate; 35. Friction ring; 36. Connecting ring; 37. Abutment wheel; 38. Driven wheel. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] As described in the background section, there are shortcomings in the existing technology. In order to solve the above-mentioned technical problems, this application proposes a welding fixture for manufacturing centrifugal fan impellers.

[0019] In one typical implementation of this application, such as Figure 1-7 As shown, a welding fixture for manufacturing centrifugal fan impellers includes, A tilting frame 1 is fixedly installed on one side of the tilting frame 1. A turntable 3 is rotatably connected to the output end of the tilting frame 1. A locking block 4 is slidably connected to the top of the turntable 3. An impeller plate 8 is locked to the top of the locking block 4. The clamping mechanism 10 includes several clamping outer rings 11. One side of the clamping outer ring 11 is rotatably connected to a clamping inner ring 12. A spring plate 13 is fixedly connected inside the clamping inner ring 12. A blade 9 is clamped inside the spring plate 13. The same integral adjusting ring 17 is movably connected inside the several clamping outer rings 11. The integral adjusting ring 17 is adapted to the several clamping inner rings 12. The clamping mechanism 10 also includes a retaining spring 18 fixedly connected inside the clamping outer ring 11. The top of the retaining spring 18 is fixedly connected to the bottom of the overall adjusting ring 17. Magnets 19 are fixedly connected to the top of the overall adjusting ring 17 and the top of the inner wall of the clamping outer ring 11. A rotating frame 14 is fixedly connected to the outside of the clamping outer ring 11. The clamping inner ring 12 is rotatably connected inside the rotating frame 14. A triangular groove 15 is provided on one side of the inner ring 12. A first meshing tooth 16 is fixedly connected inside the triangular groove 15. A protrusion 21 is fixedly connected to the bottom of the integral adjusting ring 17 inside the outer ring 11. The protrusion 21 is adapted to the bottom of the triangular groove 15. A second meshing tooth 22 is fixedly connected inside the integral adjusting ring 17 inside the outer ring 11. The second meshing tooth 22 is adapted to the adjacent first meshing tooth 16.

[0020] With the above-mentioned structure, several blades 9 can be clamped and their angles adjusted simultaneously. Specifically, when the impeller needs to be welded, the impeller plate 8 is placed on the top of the turntable 3 and the locking block 4 is activated to fix the impeller plate 8 on the turntable 3. At this time, several blades 9 are placed in the clamping inner ring 12 and held in place by the spring plate 13 on it. When it is necessary to zero the angle of several blades 9, press the handle 20. The handle 20 moves and drives the overall adjustment ring 17 to move, keeping the spring 18 compressed. The protrusion 21 at the bottom of the overall adjustment ring 17 slides inside the adjacent triangular groove 15 and abuts against both sides of the triangular groove 15, thereby zeroing the angle of several blades 9. When it is necessary to adjust the angle of several blades 9, the handle 20 drives the overall adjusting ring 17 to rotate. The rotation of the overall adjusting ring 17 drives the second meshing tooth 22 to rotate. The rotation of the second meshing tooth 22 drives the first meshing tooth 16 to rotate. The rotation of the first meshing tooth 16 drives the clamping inner ring 12 to rotate inside the clamping outer ring 11. The rotation of the clamping inner ring 12 drives the blades 9 on it to rotate, thereby uniformly adjusting the angle of several blades 9. After adjusting the angle of several blades 9 and when several blades 9 need to be welded, pull the handle 20 and move the overall adjusting ring 17 so that the adjacent magnets 19 are attracted together, the first meshing tooth 16 and the second meshing tooth 22 are separated, so that the blades 9 can be deformed in a good manner during the welding process.

[0021] Adjustment mechanism 7 includes an electric telescopic rod 5 fixedly connected to the top of turntable 3. The telescopic end of the electric telescopic rod 5 is fixedly connected to a ring frame 6. Several driven rotating rods 32 and one driving rotating rod 25 are movably connected inside the ring frame 6. The several driven rotating rods 32 and one driving rotating rod 25 are circumferentially distributed inside the ring frame 6. The several driven rotating rods 32 and one driving rotating rod 25 are all fixedly connected to the outside of the adjacent clamping outer ring 11. The adjustment mechanism 7 also includes a first end face gear disk 23 fixedly connected to the bottom of the inner wall of the ring frame 6. Several sliding frames 24 are slidably connected to the bottom of the inner wall of the ring frame 6. Several sliding frames 24 are rotatably sleeved on the outside of the adjacent driven rotating rod 32 and driving rotating rod 25. A driving gear ring 26 is rotatably sleeved on the outside of the driving rotating rod 25. The outside of the driving gear ring 26 meshes with the top of the first end face gear disk 23. A number of retaining rods 27 are fixedly connected to the bottom of the inner wall of the ring frame 6. A retaining platform 28 is fixedly connected to the outside of the retaining rods 27. A first rotating ring 29 and a second rotating ring 30 are slidably connected to the top of the retaining platform 28. A meshing wheel 31 is rotatably connected to the top of the retaining rods 27. The outside of the meshing wheel 31 meshes with the outside of the first rotating ring 29 and the inside of the second rotating ring 30. The outer part of the active gear ring 26 meshes with the bottom of the first rotating ring 29. The bottom of the inner wall of the ring frame 6 is fixedly connected to the second end face gear disk 34. The outer parts of several driven rotating rods 32 are rotatably sleeved with driven gear rings 33, and the outer parts of several driven gear rings 33 mesh with the top of the second end face gear disk 34.

[0022] Furthermore, in the above scheme, the structure described above allows for advance adjustment of the distance deformation of the blades 9 during the welding process, ensuring that several blades 9 undergo benign deformation after welding and improving welding quality. Specifically, during the welding process of the blades 9, the blades 9 on the clamping outer ring 11, which is fixedly connected to the active rotating rod 25, are welded first. When the blades 9 are displaced during the welding process, the clamping outer ring 11 moves, causing the active rotating rod 25 to move. The movement of the active rotating rod 25 causes the active gear ring 26 to rotate on the first end face gear disk 23. The active gear ring 26 rotates and moves, causing the first rotating ring 29 to rotate on the holding platform 28. The rotation of the first rotating ring 29 causes the meshing wheel 31 to rotate, which in turn causes the second rotating ring 30 to rotate. The rotation of the second rotating ring 30 causes several driven gear rings 33 that mesh with it to rotate and move on the second end face gear disk 34. At this time, the driven rotating rod 32 on the driven gear ring 33 moves, causing the clamping outer ring 11 that is fixedly connected to it to move, thereby causing several blades 9 to move in the opposite direction to compensate for the deformation distance after welding and improve the overall welding quality.

[0023] The ring frame 6 has two friction rings 35 inside. The bottom friction ring 35 is rotatably connected inside the ring frame 6, and the top friction ring 35 is fixedly connected to the top of the inner wall of the ring frame 6. Several driven rotating rods 32 are fixedly sleeved with driven wheels 38, and each driven wheel 38 abuts against the two friction rings 35. The active rotating rod 25 is externally rotatably connected to a connecting ring 36, and the connecting ring 36 is externally rotatably connected to an abutting wheel 37. The abutting wheel 37 abuts against the top of the active rotating rod 25 and the bottom friction ring 35 respectively.

[0024] By setting the above structure, the angle deformation of the blade 9 during the welding process can be adjusted in advance, ensuring that several blades 9 undergo benign deformation after welding, thus improving the welding quality. Specifically, when welding the blade 9 on the active rotating rod 25 and causing the blade 9 to deflect, the active rotating rod 25 is driven to rotate. The rotation of the active rotating rod 25 drives the abutting wheel 37 to rotate, the rotation of the abutting wheel 37 drives the friction ring 35 to rotate, the rotation of the friction ring 35 drives the driven wheel 38 to rotate, and the rotation of the driven wheel 38 drives several driven rotating rods 32 to rotate, thereby deflecting the angle of other blades 9 in advance and ensuring the welding quality.

[0025] Working principle of the invention: When welding the impeller is required, the impeller plate 8 is placed on the top of the turntable 3 and the locking block 4 is activated to fix the impeller plate 8 on the turntable 3. At this time, several blades 9 are placed in the clamping inner ring 12 and locked by the spring sheet 13 on it. When it is necessary to zero the angle of several blades 9, press the handle 20. The handle 20 moves and drives the overall adjustment ring 17 to move, keeping the spring 18 compressed. The protrusion 21 at the bottom of the overall adjustment ring 17 slides inside the adjacent triangular groove 15 and abuts against both sides of the triangular groove 15, thereby zeroing the angle of several blades 9. When it is necessary to adjust the angle of several blades 9, the handle 20 drives the overall adjusting ring 17 to rotate. The rotation of the overall adjusting ring 17 drives the second meshing tooth 22 to rotate. The rotation of the second meshing tooth 22 drives the first meshing tooth 16 to rotate. The rotation of the first meshing tooth 16 drives the clamping inner ring 12 to rotate inside the clamping outer ring 11. The rotation of the clamping inner ring 12 drives the blades 9 on it to rotate, thereby uniformly adjusting the angle of several blades 9. After adjusting the angle of several blades 9 and welding several blades 9 is required, pull the handle 20 and move the overall adjusting ring 17 to attract the magnets 19, and separate the first meshing tooth 16 from the second meshing tooth 22 so that the blades 9 can be deformed in a good manner during the welding process. During the welding process of blade 9, the blade 9 on the clamping outer ring 11 fixedly connected to the active rotating rod 25 is welded first. When the blade 9 is displaced during the welding process, the clamping outer ring 11 moves, causing the active rotating rod 25 to move. The active rotating rod 25 moves, causing the active gear ring 26 to rotate and move on the first end face gear disk 23. The active gear ring 26 rotates and moves, causing the first rotating ring 29 to rotate on the holding platform 28. The first rotating ring 29 rotates, causing the meshing wheel 31 to rotate. The meshing wheel 31 rotates, causing the second rotating ring 30 to rotate. The second rotating ring 30 rotates, causing several driven gear rings 33 that mesh with it to rotate and move on the second end face gear disk 34. At this time, the driven rotating rod 32 on the driven gear ring 33 moves, causing the clamping outer ring 11 fixedly connected to it to move, thereby causing several blades 9 to move in the opposite direction to compensate for the deformation distance after welding and improve the overall welding quality. When the blade 9 on the active rotating rod 25 is welded and causes the blade 9 to deflect, the active rotating rod 25 is driven to rotate. The rotation of the active rotating rod 25 drives the abutting wheel 37 to rotate. The rotation of the abutting wheel 37 drives the friction ring 35 to rotate. The rotation of the friction ring 35 drives the driven wheel 38 to rotate. The rotation of the driven wheel 38 drives several driven rotating rods 32 to rotate, thereby deflecting the angle of other blades 9 in advance to ensure the welding quality.

[0026] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A welding fixture for manufacturing centrifugal fan impellers, characterized in that: include, A rotating frame (1) is fixedly installed on one side of the rotating frame (1), and a turntable (3) is rotatably connected to the output end of the rotating frame (1). A locking block (4) is slidably connected to the top of the turntable (3), and an impeller plate (8) is locked to the top of the locking block (4). The clamping mechanism (10) includes several clamping outer rings (11), one side of which is rotatably connected to a clamping inner ring (12). A spring plate (13) is fixedly connected inside the clamping inner ring (12), and a blade (9) is clamped inside the spring plate (13). The same integral adjusting ring (17) is movably connected inside the several clamping outer rings (11), and the integral adjusting ring (17) is adapted to the several clamping inner rings (12). Adjustment mechanism (7) includes an electric telescopic rod (5) fixedly connected to the top of the turntable (3). The telescopic end of the electric telescopic rod (5) is fixedly connected to a ring frame (6). The ring frame (6) is movably connected to a plurality of driven rotating rods (32) and an active rotating rod (25). The plurality of driven rotating rods (32) and the active rotating rod (25) are circumferentially distributed inside the ring frame (6). The plurality of driven rotating rods (32) and the active rotating rod (25) are all fixedly connected to the outside of the adjacent clamping outer ring (11).

2. The centrifugal fan impeller manufacturing welding fixture according to claim 1, characterized in that: The clamping mechanism (10) also includes a retaining spring (18) fixedly connected inside the clamping outer ring (11). The top of the retaining spring (18) is fixedly connected to the bottom of the overall adjusting ring (17). Magnets (19) are fixedly connected to the top of the overall adjusting ring (17) and the top of the inner wall of the clamping outer ring (11). A rotating frame (14) is fixedly connected to the outside of the clamping outer ring (11). The clamping inner ring (12) is rotatably connected inside the rotating frame (14).

3. The centrifugal fan impeller manufacturing welding fixture according to claim 2, characterized in that: A triangular groove (15) is provided on one side of the clamping inner ring (12). A first meshing tooth (16) is fixedly connected inside the triangular groove (15). A protrusion (21) is fixedly connected to the bottom of the overall adjusting ring (17) inside the clamping outer ring (11). The protrusion (21) is adapted to the bottom of the triangular groove (15). A second meshing tooth (22) is fixedly connected inside the overall adjusting ring (17) inside the clamping outer ring (11). The second meshing tooth (22) is adapted to the adjacent first meshing tooth (16).

4. The centrifugal fan impeller manufacturing welding fixture according to claim 1, characterized in that: The adjustment mechanism (7) further includes a first end face toothed disc (23) fixedly connected to the bottom of the inner wall of the ring frame (6). Several sliding frames (24) are slidably connected to the bottom of the inner wall of the ring frame (6). Several sliding frames (24) are rotatably sleeved on the outside of the adjacent driven rotating rod (32) and the active rotating rod (25). An active toothed ring (26) is rotatably sleeved on the outside of the active rotating rod (25). The outside of the active toothed ring (26) meshes with the top of the first end face toothed disc (23).

5. The centrifugal fan impeller manufacturing welding fixture according to claim 4, characterized in that: The bottom of the inner wall of the ring frame (6) is fixedly connected with several retaining rods (27), and a retaining platform (28) is fixedly connected to the outside of the retaining rods (27). A first rotating ring (29) and a second rotating ring (30) are slidably connected to the top of the retaining platform (28). A meshing wheel (31) is rotatably connected to the top of the retaining rods (27). The outside of the meshing wheel (31) meshes with the outside of the first rotating ring (29) and the inside of the second rotating ring (30).

6. The centrifugal fan impeller manufacturing welding fixture according to claim 5, characterized in that: The outer side of the active gear ring (26) meshes with the bottom of the first rotating ring (29). The bottom of the inner wall of the ring frame (6) is fixedly connected to the second end face gear disk (34). The outer side of each of the driven rotating rods (32) is rotatably sleeved with a driven gear ring (33). The outer side of each of the driven gear rings (33) meshes with the top of the second end face gear disk (34).

7. The centrifugal fan impeller manufacturing welding fixture according to claim 1, characterized in that: The ring frame (6) is provided with two friction rings (35) inside. The bottom friction ring (35) is rotatably connected to the inside of the ring frame (6), and the top friction ring (35) is fixedly connected to the top of the inner wall of the ring frame (6). A number of driven rotating rods (32) are fixedly sleeved with driven wheels (38), and the driven wheels (38) abut against the two friction rings (35).

8. The centrifugal fan impeller manufacturing welding fixture according to claim 7, characterized in that: The active rotating rod (25) is rotatably connected to a connecting ring (36), and the connecting ring (36) is rotatably connected to an abutting wheel (37). The abutting wheel (37) abuts against the top of the active rotating rod (25) and the bottom friction ring (35) respectively.

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