Impeller tailor-welding device for water pump machining

Abstract

The invention relates to the technical field of impeller welding, and discloses an impeller tailor-welding device for water pump machining, which comprises a machining table, a welding robot is arranged on the machining table, a blade arranging mechanism is arranged on the machining table, the blade arranging mechanism comprises a main driving mechanism, a blade positioning mechanism and a welding turntable, and the blade positioning mechanism comprises a rotating seat and a positioning disc. The positioning disc is fixed to the rotating base, the main driving mechanism drives the rotating base and the welding rotary table to rotate, the displacement mechanism is arranged on the machining table, the positioning table is rotationally arranged on the displacement mechanism, the multiple clamping mechanisms are installed at the bottom of the positioning table, and the clamping mechanisms clamp blades. Automatic and precise control over the whole process of blade feeding, neatening, positioning, clamping, transferring and welding is integrally achieved, feeding positioning and welding operation are efficiently conducted in parallel, and the production efficiency is greatly improved.

Description

Technical Field

[0001] This invention relates to the field of impeller welding technology, specifically to an impeller welding device for water pump processing. Background Technology

[0002] As the core power component of a water pump, the impeller's structural integrity and dimensional accuracy directly determine the pump's hydrodynamic performance and operational stability. It is widely used in water conservancy, industrial transportation, and HVAC systems. Currently, impeller manufacturing is primarily based on casting technology. This process, using molds for casting, allows for mass production at a relatively low cost. It is suitable for conventional impellers with relatively regular structures and made of ordinary cast iron or aluminum alloy, meeting the needs of general applications.

[0003] However, casting processes have significant limitations in specific applications. For example, for large-sized impellers, impellers with irregularly shaped curved blades, or impellers that require corrosion-resistant and high-strength materials such as stainless steel or high-strength alloys, casting is prone to defects such as porosity, cracks, and uneven grain size. It is also difficult to accurately form complex structures. In such cases, welding becomes the preferred solution. By welding prefabricated blades and upper and lower disks after segmented processing, casting defects can be avoided, and the structural strength and adaptability of the impeller can be improved.

[0004] The existing impeller welding process has many significant shortcomings, which seriously restrict the improvement of production efficiency and product quality. First, there is a lack of dedicated blade straightening and positioning. After the blades are loaded, it is difficult to achieve uniform standardization in their radial position and circumferential angle. They often rely on manual adjustment or robotic positioning, which can lead to positioning inaccuracies due to shaking during welding, directly affecting the dynamic balance performance of the impeller. Second, traditional clamping devices have poor adaptability and cannot adaptively adjust the clamping force according to the thickness and shape of the blades. Either the clamping force is too large, causing damage to the blade surface, or the clamping force is insufficient, causing axial movement or radial displacement of the blades during transportation, or even the risk of falling off. Third, there is a lack of automated mechanisms for coordinated linkage between the various processes. Loading, positioning, clamping, transportation, and welding are mostly done manually in separate steps. This not only results in low overall production efficiency, but manual intervention can also easily cause asynchronous actions between processes, further reducing welding accuracy. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the above-mentioned difficulties and provide an impeller welding device for water pump processing.

[0006] To solve the above-mentioned technical problems, the technical solution provided by the present invention is as follows: a water pump processing impeller welding device, including a processing table, a welding robot on the processing table, a blade straightening mechanism on the processing table, the blade straightening mechanism including a main drive mechanism, a blade positioning mechanism and a welding turntable, the blade positioning mechanism including a rotating seat and a positioning disk, the positioning disk being fixed on the rotating seat, and the main drive mechanism driving the rotating seat and the welding turntable to rotate. The processing table is equipped with a shifting mechanism, on which a positioning table is rotatably mounted. Multiple clamping mechanisms are installed at the bottom of the positioning table. The clamping mechanisms clamp the blades. The shifting mechanism transfers the clamping mechanisms that hold the blades from the blade positioning mechanism to the welding turntable through the positioning table. The lower plate is installed on the welding turntable, and the welding robot welds multiple blades to the lower plate.

[0007] As an improvement: the positioning plate includes a chassis connected to the rotating seat, a fixed plate is provided on the chassis, a plurality of fixed plates are evenly arranged on the fixed plate, and a movable plate is provided in the groove between adjacent fixed plates, the fixed plates and the movable plates clamp and position the blade.

[0008] As an improvement: the positioning plate is evenly provided with multiple through slots, a fixed platform is installed in the through slots, a connecting frame that is hinged to the fixed platform and connected to the movable plate is provided, a torsion spring is provided between the connecting frame and the fixed platform, a stop is provided at the bottom of the connecting frame, and an adjustment mechanism is provided on the positioning plate to push the stop to rotate so that the movable plate contacts the blade clamping mechanism.

[0009] As an improvement: the adjustment mechanism includes a cylinder, a floating ring and a rotating ring. The positioning plate is provided with a sliding column connected to the chassis. The rotating ring is provided with a through hole that slides with the sliding column. The output end of the cylinder is connected to the floating ring. The floating ring is provided with a plurality of rolling balls that cooperate with the rotating ring. The rotating ring is provided with a plurality of push rods that cooperate with the abutment.

[0010] As an improvement: the blade positioning mechanism also includes a secondary drive mechanism, which includes a third motor and a drive shaft. The third motor drives the drive shaft to rotate at the central through hole of the rotating seat. The top of the drive shaft is provided with a first truncated cone, and a second truncated cone connected by bolts is provided on the first truncated cone. Multiple positioning rods are provided on the outer sides of both the first and second truncated cones.

[0011] As an improvement: the blade straightening mechanism housing is provided with an elliptical ring platform, which is located at the through hole of the positioning disk. The blade is fed at the farthest end between the elliptical ring platform and the positioning disk, and at the closest end between the elliptical ring platform and the positioning disk, the elliptical ring platform pushes the blade to be positioned on the positioning disk. The blade straightening mechanism housing is provided with a rotatable limiting pressure plate, which prevents the blade from moving upward during positioning.

[0012] As an improvement: the clamping mechanism includes a housing, a first clamp, a second clamp, and a hinge seat. The housing is fixed in the groove at the bottom of the positioning platform, the hinge seat is installed inside the housing, the first clamp and the second clamp are symmetrically hinged on the hinge seat, the top of the first clamp and the second clamp are each provided with a second spring connected to the housing, and the bottom of each is provided with a clamping plate, with adjacent clamping plates being staggered.

[0013] As an improvement: the top of the housing is provided with a second cylinder, the output end of the second cylinder is provided with a drive frame, the drive frame is slidably disposed inside the housing, and the bottom of the drive frame is hinged with a plurality of push platforms, one end of the push platform abuts against one side of the first or second gripper, and the other end is provided with a third spring connected to the drive frame.

[0014] As an improvement: a mounting frame is provided in the groove at the bottom of the housing, and multiple sets of friction plates are provided in the mounting frame. Clamping claw one and clamping claw two pass through the gap between adjacent friction plates. A lifting frame is provided at the bottom of the housing, and an insert plate is provided on the lifting frame. The insert plate is inserted into the transverse groove of the friction plate. Both ends of the lifting frame are provided with a transmission platform that slides with the housing. A transmission groove is provided on the inner side of the transmission platform. Both ends of the drive frame are provided with uprights at the bottom. A wing platform is provided on the outer side of the bottom of the upright. The wing platform is located in the transmission groove and cooperates with the bottom and top surfaces of the transmission groove.

[0015] As an improvement: a partition is provided at the central through hole of the positioning platform, a positioning plate is provided at the bottom of the partition, a spline shaft is provided at the top of the positioning plate, a spline groove that mates with the spline shaft is provided on the partition, a limiting plate is provided at the top of the spline shaft, and a spring connected to the positioning platform is provided at the top of the limiting plate.

[0016] The beneficial effects of this invention compared to existing technologies are as follows: This invention constructs an integrated impeller welding operation system, completely solving the core pain points of traditional welding processes such as inaccurate positioning, unstable clamping, inefficient transfer, and poor adaptability. It achieves automated and precise control of the entire process of blade loading, shaping, positioning, clamping, transfer, and welding. Loading, positioning, and welding operations can be carried out in parallel with high efficiency, significantly improving production efficiency. The multi-dimensional positioning and adaptive clamping structure ensures blade attitude consistency and welding benchmark uniformity, providing an efficient, stable, and precise solution for pump impeller welding. Specifically: 1. Relying on the radial regularization of the elliptical ring platform and the axial limiting of the limiting pressure plate, combined with the precise pressure adjustment mechanism and the inner end limiting of the positioning rod, a multi-dimensional collaborative positioning system is formed. This effectively avoids blade feeding deviation and axial movement, ensures uniform blade spacing and tight fit with the upper and lower plates, provides a unified benchmark for welding, and significantly improves the impeller dynamic balance accuracy and welding quality stability. 2. The clamping mechanism adopts a flexible hinged push table and a staggered clamping plate, which can adaptively adjust the clamping force according to the blade shape and thickness to avoid slippage or surface damage; the friction plate and the lifting frame are linked to lock the clamping posture to prevent displacement during transfer. The inclined installation design, together with the auxiliary drive mechanism, avoids clamping interference and can be adapted to multiple blade specifications without replacing components; 3. The main drive mechanism achieves synchronous operation of the rotating base and welding turntable through sprocket transmission, allowing for parallel loading, positioning, and welding operations. The shifting mechanism combines horizontal movement, vertical lifting, and positioning table rotation functions, enabling precise and rapid blade transfer. Fully automated operation reduces manual intervention, shortens process intervals, minimizes human error, and significantly improves production efficiency and product consistency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention.

[0018] Figure 2 This is a schematic diagram of the structure of the present invention.

[0019] Figure 3 This is a schematic diagram of the structure of the present invention.

[0020] Figure 4 This is a schematic diagram of the structure of the present invention.

[0021] Figure 5 This is a schematic diagram of the structure of the present invention.

[0022] Figure 6 This is a schematic diagram of the structure of the present invention.

[0023] Figure 7 This is a schematic diagram of the structure of the present invention.

[0024] Figure 8 This is a schematic diagram of the structure of the present invention.

[0025] Figure 9 This is a schematic diagram of the structure of the present invention.

[0026] Figure 10 This is a schematic diagram of the structure of the present invention.

[0027] Figure 11 This is a schematic diagram of the structure of the present invention.

[0028] Figure 12 This is a schematic diagram of the structure of the present invention.

[0029] Figure 13 This is a schematic diagram of the structure of the present invention.

[0030] Figure 14 This is a schematic diagram of the structure of the present invention.

[0031] Figure 15This is a schematic diagram of the structure of the present invention.

[0032] Figure 16 This is a schematic diagram of the structure of the present invention.

[0033] Figure 17 This is a schematic diagram of the structure of the present invention.

[0034] Figure 18 This is a schematic diagram of the impeller structure.

[0035] As shown in the figure: 01. Lower plate; 02. Blade; 03. Upper plate; 1. Machining table; 2. Blade straightening mechanism; 3. Main drive mechanism; 4. Blade positioning mechanism; 5. Welding turntable; 6. Shifting mechanism; 7. Positioning table; 8. Clamping mechanism; 9. Welding robot; 21. Elliptical ring table; 22. Motor 1; 23. Rotating rod; 24. Limiting pressure plate; 31. Motor 2; 32. Sprocket 1; 41. Rotating seat; 411. Sprocket 2; 412. Sliding column; 42. Positioning plate; 421. Base plate; 422. Through groove; 423. Fixed plate; 424. Fixed profile plate; 425. Movable profile plate; 426. Fixed table; 427. Connecting frame; 428. Torsion spring; 429. Support frame; 43. Adjustment mechanism; 431. Cylinder 1; 432. Floating ring; 433. Rolling ball; 434. Rotating ring; 435. Push rod; 44. Secondary drive mechanism; 441. Motor 3; 442. Drive shaft; 443. Frustum 1; 444. Frustum 2; 445. Positioning rod; 51. Sprocket 3; 61. Moving frame; 62. Guide table; 63. Motor 4; 64. Threaded column; 65. Lifting platform; 66. Cover platform; 71. Partition plate; 72. Positioning plate; 73. Splined shaft; 74. Limiting plate; 75. Spring Spring 1; 81. Housing; 82. Gripper 1; 821. Spring 2; 822. Clamping plate; 83. Gripper 2; 84. Hinge seat; 85. Cylinder 2; 86. Drive frame; 861. Pushing platform; 862. Spring 3; 863. Upright; 864. Wing platform; 87. Mounting frame; 871. Friction pad; 88. Lifting frame; 881. Insert plate; 882. Transmission platform; 883. Transmission groove. Detailed Implementation

[0036] The present invention will now be described in further detail with reference to the accompanying drawings.

[0037] Combined with appendix Figure 1 Appendix Figure 2 Appendix Figure 3 Appendix Figure 11 and attached Figure 18As shown, a water pump impeller welding device includes a processing table 1, a welding robot 9 on the processing table 1, and a blade straightening mechanism 2 on the processing table 1. The blade straightening mechanism 2 includes a main drive mechanism 3, a blade positioning mechanism 4, and a welding turntable 5. The blade positioning mechanism 4 includes a rotating seat 41 and a positioning disk 42. The positioning disk 42 is fixed on the rotating seat 41. The main drive mechanism 3 drives the rotating seat 41 and the welding turntable 5 to rotate. The processing table 1 is provided with a shifting mechanism 6. A positioning platform 7 is rotatably mounted on the shifting mechanism 6. Multiple clamping mechanisms 8 are installed at the bottom of the positioning platform 7. The clamping mechanisms 8 clamp the blades 02. The shifting mechanism 6 transfers the clamping mechanisms 8 that clamp the blades 02 from the blade positioning mechanism 4 to the welding turntable 5 through the positioning platform 7. The lower plate 01 is installed on the welding turntable 5. The welding robot 9 welds multiple blades 02 to the lower plate 01.

[0038] This impeller welding device for water pump processing solves the problems of low blade positioning accuracy, cumbersome process connection, and insufficient automation in traditional impeller welding, resulting in low welding efficiency and poor impeller quality consistency. By integrating blade straightening, precise positioning, automated transfer and collaborative welding functions, it achieves efficient and precise welding of blades and the lower plate, ensuring the dimensional accuracy and structural stability of the finished impeller.

[0039] Before processing, the lower plate 01 is pre-installed and fixed on the welding turntable 5. The welding robot 9 is adjusted to the preset welding position to prepare for subsequent welding operations. After startup, the main drive mechanism 3 of the blade straightening mechanism 2 starts to work, driving the rotating seat 41 and the welding turntable 5 to rotate. The rotating seat 41 drives the positioning disk 42 on it to rotate together. After the blade 02 is placed on the positioning disk 42 at the loading station, the blade straightening mechanism 2 and the positioning disk 42 cooperate to achieve the positioning of the blade 02 as the positioning disk 42 rotates. Then, the shifting mechanism 6 starts and moves the positioning table 7 above the blade positioning mechanism 4. The multiple clamping mechanisms 8 at the bottom of the positioning table 7 are aligned with the blade 02 on the positioning disk 42 and clamp it. Then, the shifting mechanism 6 moves the positioning table 7 above the lower plate 01 of the welding turntable 5. After that, the welding robot 9 spot welds the blade 02 onto the lower plate 01. The welding clamping mechanism 8 releases the clamp on the blade, and the welding robot 9 welds the blade 02 and the lower plate 01, finally realizing the automated and high-precision welding of the impeller.

[0040] Combined with appendix Figure 3 As shown, the main drive mechanism 3 includes a second motor 31, which is fixed inside the housing of the blade straightening mechanism 2 and has two first sprockets 32 at its output end. The bottom of the rotating seat 41 is provided with a second sprocket 411, and the bottom of the welding turntable 5 is provided with a third sprocket 51. The second sprocket 411 and the third sprocket 51 are the same size and are respectively connected to the first sprocket 32 ​​by a chain.

[0041] The main drive mechanism 3 serves as the core of the power output for the blade straightening mechanism 2. Its core function is to stably transmit the power of the second motor 31 to the rotating seat 41 and the welding turntable 5, achieving synchronous transmission control between the two and providing precise power support for the blade 02 straightening and welding operations. When the blade positioning mechanism 4 and the welding turntable 5 need to rotate and change position, the second motor 31 is powered on and starts running, driving the first sprocket 32 ​​to rotate. Through chain transmission, it drives the second sprocket 411 and the third sprocket 51 to rotate, which in turn drives the rotating seat 41 and the welding turntable 5 to rotate. Since the second sprocket 411 and the third sprocket 51 are the same size, the rotating seat 41 and the welding turntable 5 rotate synchronously and at the same speed, so that the rotating seat 41 and the welding turntable 5 rotate at the same angle within one working cycle, providing a basis for synchronous operation of the blade 02 loading and clamping of the positioning plate 42 and the welding of the welding turntable 5.

[0042] Combined with appendix Figure 4 Appendix Figure 5 and attached Figure 7 As shown, the positioning disk 42 includes a base 421 connected to the rotating seat 41. A fixed disk 423 is provided on the base 421. A plurality of fixed plates 424 are evenly arranged on the fixed disk 423. A movable plate 425 is provided in the groove between adjacent fixed plates 424. The fixed plates 424 and the movable plates 425 are positioned and clamp the blade 02.

[0043] Combined with appendix Figure 7 Appendix Figure 8 and attached Figure 9 As shown, the positioning disk 42 is provided with a plurality of through slots 422 evenly. A fixed platform 426 is installed in the through slots 422. A connecting frame 427 that is hinged to the fixed platform 426 and connected to the movable plate 425 is provided. A torsion spring 428 is provided between the connecting frame 427 and the fixed platform 426. A stop 429 is provided at the bottom of the connecting frame 427. The positioning disk 42 is provided with an adjustment mechanism 43 that pushes the stop 429 to rotate so that the movable plate 425 contacts the blade 02 for clamping.

[0044] Combined with appendix Figure 5 Appendix Figure 6 and attached Figure 9 As shown, the adjustment mechanism 43 includes a cylinder 431, a floating ring 432, and a rotating ring 434. The positioning plate 42 is provided with a sliding column 412 connected to the chassis 421. The rotating ring 434 is provided with a through hole that slides with the sliding column 412. The output end of the cylinder 431 is connected to the floating ring 432. The floating ring 432 is provided with a plurality of rolling balls 433 that cooperate with the rotating ring 434. The rotating ring 434 is provided with a plurality of push rods 435 that cooperate with the abutment 429.

[0045] The positioning plate 42 mainly works with the blade 02 to perform regular positioning and adjustable clamping before welding operations, ensuring that the posture of the blade 02 after positioning is consistent with the blade 02 placement posture designed inside the impeller, providing a positioning basis for fixing the posture of the blade 02 during welding operations; the adjustment mechanism 43 solves the problem of convenient and synchronous release of the clamping state, realizing the quick pick-up and drop of the blade 02 after the operation is completed, avoiding the inefficiency caused by manual release of clamping or the positioning failure caused by blade 02 shaking.

[0046] The evenly distributed through slots 422 on the positioning plate 42 provide an installation reference for the clamping assembly. The torsion spring 428 between the connecting frame 427 and the fixed platform 426 is always pre-tensioned, keeping the movable plate 425 in a clamped state when no external force is applied. After the movable plate 425 is opened by the adjusting mechanism 43, the blade 02 can be placed into the positioning area manually or by a robot. When it is necessary to clamp the blade 02, the adjusting mechanism 43 is activated, and the output end of the cylinder 431 pushes the floating ring 432 to move axially. The rolling ball 433 on the floating ring 432 forms a rolling fit with the rotating ring 434, reducing transmission resistance and driving the blade 02 to move axially. The rotating ring 434 slides smoothly along the sliding column 412 on the positioning plate 42. Multiple push rods 435 on the rotating ring 434 move synchronously with it, making precise contact with the abutment 429 at the bottom of the connecting frame 427 on the positioning plate 42 and applying a pushing force. This causes the connecting frame 427 to rotate around the hinge point of the fixed platform 426, overcoming the elastic force of the torsion spring 428. This, in turn, drives the movable plate 425 to move away from the fixed plate 424, opening the positioning area. After the blade 02 is placed in place, the adjusting mechanism 43 resets, and the torsion spring 428 pushes the connecting frame 427 to rotate, causing the movable plate 425 to press the blade 02 onto the fixed plate 424.

[0047] When the blade 02 is loaded and positioned, the adjustment mechanism 43 adjusts the pressure of the movable plate 425 on the blade 02 by finely adjusting the rotation angle of the abutment 429. This pressure gradually increases during the positioning process, step by step achieving tight clamping of the blade 02 by the movable plate 425 and the fixed plate 424. When the blade 02 is positioned and the clamping mechanism 8 has completed clamping, the cylinder 431 pushes the floating ring 432 and the rotating ring 434 to rise, and the push rod 435 pushes the abutment 429 to rotate, which drives the connecting frame 427 to rotate, thereby driving the movable plate 425 to move away from the fixed plate 424, releasing the clamping of the blade 02 so that the blade 02 can be quickly removed, and preventing the movable plate 425 from hindering the movement of the blade 02 when it leaves the blade positioning mechanism 4.

[0048] Combined with appendix Figure 5 and attached Figure 6As shown, the blade positioning mechanism 4 also includes a secondary drive mechanism 44. The secondary drive mechanism 44 includes a third motor 441 and a drive shaft 442. The third motor 441 drives the drive shaft 442 to rotate at the central through hole of the rotating seat 41. The top of the drive shaft 442 is provided with a first truncated cone 443. The first truncated cone 443 is provided with a second truncated cone 444 connected by bolts. Multiple positioning rods 445 are provided on the outer sides of both the first truncated cone 443 and the second truncated cone 444.

[0049] The secondary drive mechanism 44, as the core auxiliary power component of the blade positioning mechanism 4, mainly solves the problem of inner end positioning of the blade 02 during the positioning process and drives the positioning table 7 to rotate. It compensates for the radial positioning defect of the blade 02 in the outer peripheral clamping of the positioning disk 42 and provides power for the blade 02 to leave the positioning disk 42 without obstruction.

[0050] Frustum 1 443 is fixedly connected to Frustum 2 444 by bolts. This detachable connection design not only ensures the firmness of the connection between the two, but also facilitates the adjustment of the position of Frustum 2 444 according to the positioning requirements of blades 02 of different specifications. This allows for the adjustment of the misalignment angle of multiple positioning rods 445 on the outer sides of Frustum 1 443 and Frustum 2 444, making it easier for the inner end of blade 02 to contact the corresponding two positioning rods 445, thus achieving a radial positioning effect. During the blade 02 feeding and positioning process, motor 3 441 drives the drive shaft 442 to rotate. Frustum 1 443 at the top of the drive shaft 442 rotates synchronously with the drive shaft 442. At this time, it is ensured that the drive shaft 442 and the rotating seat 41 rotate at the same speed, so that Frustum 1 443 and the rotating seat 41 are relatively stationary, thereby ensuring positioning stability.

[0051] After positioning is completed, motor 3 441 drives drive shaft 442 to rotate in the opposite direction by a certain angle. During this process, it is ensured that positioning rod 445 does not come into contact with blade 02. When positioning platform 7 descends directly above positioning disk 42, the top of frustum 2 444 is coupled with positioning platform 7. As positioning platform 7 continues to descend, motor 3 441 drives positioning platform 7 to rotate through frustum 2 444, so that clamping mechanism 8 can finely adjust the cutting angle to facilitate clamping. After clamping is completed, positioning platform 7 and clamping mechanism 8 take blade 02 away from positioning disk 42. During this process, motor 3 441 drives positioning platform 7 to rotate, so that clamping mechanism 8 can finely adjust the cutting angle to avoid blade 02 colliding with positioning disk 42.

[0052] Combined with appendix Figure 2 and attached Figure 3As shown, the blade straightening mechanism 2 has an elliptical ring platform 21 on its housing. The elliptical ring platform 21 is located at the through hole of the positioning disk 42. The blade 02 is fed at the farthest point between the elliptical ring platform 21 and the positioning disk 42. At the closest point between the elliptical ring platform 21 and the positioning disk 42, the elliptical ring platform 21 pushes the blade 02 to be positioned on the positioning disk 42. The blade straightening mechanism 2 has a motor 22 inside. The output end of the motor 22 has a rotating rod 23. The rotating rod 23 has a limiting pressure plate 24. The limiting pressure plate 24 prevents the blade 02 from moving upward during positioning.

[0053] The elliptical ring platform 21 and the limiting pressure plate 24 of the blade straightening mechanism 2 solve the problems of convenience, radial automatic positioning, and axial movement during the blade 02 feeding process. Through structural design and power coordination, it achieves integrated guarantee of blade 02 feeding, straightening, and limiting, providing accurate preconditions for subsequent positioning plate 42 clamping and center alignment with the auxiliary drive mechanism 44, avoiding insufficient positioning accuracy caused by feeding deviation or axial movement, and ensuring the smooth operation of blade 02.

[0054] The elliptical ring platform 21 on the shell of the blade straightening mechanism 2 is precisely positioned at the through hole of the positioning disk 42. Utilizing the characteristics of the elliptical structure, the distance between the elliptical ring platform 21 and the positioning disk 42 changes periodically, creating ample loading space at the farthest point. This allows operators or automated equipment to smoothly place the blade 02 in the preset area of ​​the positioning disk 42, avoiding interference between the blade 02 and the mechanism during loading. When the main drive mechanism 3 drives the rotating seat 41 and the positioning disk 42 to rotate synchronously, the blade 02 placed on the positioning disk 42 rotates together with the positioning disk. As the blade 02 moves from the far end of the elliptical ring platform 21 to the near end of the positioning disk 42, the inner wall of the elliptical ring platform 21 gradually contacts the outer periphery of the blade 02. Subsequently, the inner wall of the elliptical ring platform 21 applies a radial thrust to the blade 02, pushing the blade 02 to gradually adjust its position on the positioning disk 42.

[0055] Before the blade 02 is loaded, the motor 22 inside the blade straightening mechanism 2 drives the rotating rod 23 to rotate. The limiting pressure plate 24 on the rotating rod 23 rotates synchronously with the rotating rod to the top of the positioning disk 42. During the loading process of the positioning disk 42, the limiting pressure plate 24 and the top of the blade 02 are fitted together to limit the blade 02, effectively preventing the blade 02 from moving upward due to force during the straightening process pushed by the elliptical ring platform 21, ensuring the positional stability of the blade 02 in the axial direction. Finally, through the radial straightening of the elliptical ring platform 21, the axial limiting of the limiting pressure plate 24, the bottom support of the fixed disk 423 for the blade 02, the radial limiting of the inner end of the blade 02 by the positioning rod 445, and the clamping and positioning of the blade 02 by the fixed plate 424 and the movable plate 425, the blade 02 forms a precise and stable initial posture on the positioning disk 42. After the positioning work is completed, the motor 22 drives the limiting pressure plate 24 to rotate, so that it moves away from the top of the positioning disk 42, providing space for the clamping and displacement of the clamping mechanism 8.

[0056] Combined with appendix Figure 10 Appendix Figure 13 Appendix Figure 14 and attached Figure 15 As shown, the clamping mechanism 8 includes a housing 81, a first clamp 82, a second clamp 83, and a hinge seat 84. The housing 81 is inclined and fixed in the bottom groove of the positioning platform 7. The hinge seat 84 is installed inside the housing 81. The first clamp 82 and the second clamp 83 are symmetrically hinged on the hinge seat 84. The top of the first clamp 82 and the second clamp 83 are provided with a second spring 821 connected to the housing 81, and the bottom of each is provided with a clamping plate 822. Adjacent clamping plates 822 are staggered.

[0057] Combined with appendix Figure 15 and attached Figure 16 As shown, the top of the housing 81 is provided with a second cylinder 85, and the output end of the second cylinder 85 is provided with a drive frame 86. The drive frame 86 is slidably disposed inside the housing 81. The bottom of the drive frame 86 is hinged with a plurality of push platforms 861. One end of the push platform 861 abuts against one side of the first gripper 82 or the second gripper 83, and the other end is provided with a third spring 862 connected to the drive frame 86.

[0058] The clamping mechanism has 8 core components to solve the problem of stable clamping of blade 02 during the transfer process, preventing blade 02 from shifting, falling or being damaged due to external forces. At the same time, it can realize the rapid opening and closing of the clamping action and adaptability adjustment, ensuring the continuity of the operation process and the positioning accuracy of blade 02.

[0059] During the descent of the clamping mechanism 8 along with the positioning table 7, the grippers are in the open state. When the inclined clamping mechanism 8 cuts into the clamping position of the blade 02, the auxiliary drive mechanism 44 drives the positioning table 7 to rotate, causing the clamping mechanism 8 to rotate and descend, thus preventing the grippers from hitting the blade 02 and the positioning disk 42. When it is necessary to clamp the blade 02, the cylinder 2 85 at the top of the housing 81 is activated as a power source. Its output end drives the drive frame 86 to rise smoothly along the inside of the housing 81, and the multiple push platforms 861 hinged at the bottom of the drive frame 86 move upward accordingly. The end of the gripper 82 or gripper 83 is precisely contacted and a pushing force is applied, forcing the gripper to rotate around the hinge seat 84 against the elastic force of the spring 821. This causes the misaligned clamping plate 822 at the bottom to move closer to both sides of the blade 02 and fit tightly. At this time, the drive frame 86 continues to rise, pushing the spring 862 connected to the drive frame 86 at the other end of the platform 861 to compress. After the clamping plates 822, which are misaligned on multiple grippers, have completed clamping with the blade 02 and achieved a certain clamping force, the cylinder 85 stops, completing the clamping operation.

[0060] Multiple flexible hinged push platforms 861 enable the clamping mechanism 8 to adaptively adjust the clamping according to the shape and thickness of the blade 02, ensuring that multiple clamping plates 822 can clamp the blade with uniform and moderate clamping force, preventing the blade 02 from slipping and preventing surface damage. Multiple staggered clamping plates 822 achieve multi-point clamping, ensuring the stability of the blade 02 during clamping. When the operation is completed and the clamping needs to be released, the output end of cylinder 2 85 drives the drive frame 86 to reset downward, the pushing force of push platform 861 on the gripper disappears, spring 2 821 releases elastic potential energy, causing gripper 1 82 and gripper 2 83 to rotate in opposite directions, and the clamping plate 822 opens accordingly, releasing the constraint on the blade 02, facilitating the quick picking and putting of the blade 02, and completing one clamping cycle.

[0061] Combined with appendix Figure 15 and attached Figure 17 As shown, the bottom groove of the housing 81 is provided with a mounting frame 87, and multiple sets of friction plates 871 are provided in the mounting frame 87. The first clamp 82 and the second clamp 83 pass through the gaps between adjacent friction plates 871. The bottom of the housing 81 is provided with a lifting frame 88, and the lifting frame 88 is provided with an insert plate 881. The insert plate 881 is inserted into the transverse groove of the friction plate 871. Both ends of the lifting frame 88 are provided with a transmission platform 882 that slides with the housing 81. The inner side of the transmission platform 882 is provided with a transmission groove 883. Both ends of the drive frame 86 are provided with a vertical rod 863 at the bottom. The outer side of the bottom of the vertical rod 863 is provided with a wing platform 864. The wing platform 864 is located in the transmission groove 883 and cooperates with the bottom and top surfaces of the transmission groove 883.

[0062] The friction plate 871 addresses the issue of minute displacements in grippers 82 and 83 after they clamp blade 02 due to external disturbances or their own rebound. This prevents the grippers from shifting during clamping, which could reduce the positioning accuracy of blade 02. It also helps improve the smoothness of the gripper opening and closing motion, preventing jamming or skew during gripper movement, and further ensuring the stability and reliability of blade 02 clamping.

[0063] When cylinder 85 starts and pushes the drive frame 86 upward, the uprights 863 at both ends of the drive frame 86 move upward accordingly. The wing platform 864 on the outer side of the bottom of the upright 863 moves upward in the transmission groove 883 inside the transmission table 882. Before the clamping is completed, the wing platform 864 does not contact the top surface of the transmission groove 883. After the clamping is completed, the drive frame 86 continues to move upward, so that the wing platform 864 contacts the top surface of the transmission groove 883 and drives the lifting frame 88 to move upward. The insert plate 881 on the lifting frame 88 is then inserted into the transverse groove of the friction plate 871. The squeezing action of the insert plate 881 expands the transverse groove of the friction plate 871, thereby reducing the gap between the friction plate 871 and the gripper and making them contact. The squeezing action of the friction plate 871 on the gripper increases the rotation resistance of the gripper, firmly locking the gripper's clamping posture and preventing displacement problems during the clamping and displacement of the blade 02.

[0064] After the displacement and spot welding are completed, cylinder 85 drives the drive frame 86 to move down, and the upright 863 and wing platform 864 move down synchronously. The wing platform 864 gradually contacts the bottom surface of the transmission groove 883 and applies a downward thrust, driving the lifting frame 88 to reset downward. The insert plate 881 is pulled out from the transverse groove of the friction plate 871. After the friction plate 871 loses its squeezing constraint, it returns to its initial gap, and the friction force on the gripper disappears. The gripper can smoothly rotate in the opposite direction under the action of spring 821 to open. The structural design of the friction plate 871 does not interfere with the normal opening and closing action of the gripper, and can enhance the stability of the gripper through friction locking in the clamping state. It forms a synergistic cooperation with the original clamping structure, further improving the accuracy and reliability of blade 02 clamping.

[0065] Combined with appendix Figure 12 As shown, a partition plate 71 is provided at the center through hole of the positioning platform 7, a positioning plate 72 is provided at the bottom of the partition plate 71, a spline shaft 73 is provided at the top of the positioning plate 72, a spline groove that mates with the spline shaft 73 is provided on the partition plate 71, a limiting plate 74 is provided at the top of the spline shaft 73, and a spring 75 connected to the positioning platform 7 is provided at the top of the limiting plate 74.

[0066] The positioning platform 7 solves the problems of axial positioning, buffer protection and rotational power of blade 02 during operation, and provides a stable pre-positioning foundation for the precise clamping of the bottom clamping mechanism 8; Before clamping, the positioning table 7 moves above the positioning disk 42. During the descent of the positioning table 7, the positioning plate 72 first contacts the top of the second frustum 444. As the positioning table 7 continues to descend, the first spring 75 is compressed. During the fine-tuning of the entry and exit positions by the clamping mechanism 8, the secondary drive mechanism 44 rotates the second frustum 444. The friction between the second frustum 444 and the positioning plate 72 drives the positioning plate 72 to rotate. The spline shaft 73 at the top of the positioning plate 72 engages with the spline groove on the partition plate 71, causing the positioning plate 72 to drive the positioning table 7 to rotate, which in turn drives the clamping mechanism 8 to rotate. The elastic potential energy of the first spring 75 allows the positioning plate 72 to press tightly against the top of the second frustum 444. When the top of the positioning plate 72 contacts the partition plate 71, the positioning table 7 falls into place. The positioning table 7 then transfers to the welding turntable. After the upper plate 72 contacts the top of the lower plate 01, the main drive mechanism 3 drives the welding turntable 5 to make the lower plate 01 drive the positioning table 7 to rotate. The positioning table 7 and the welding turntable 5 rotate synchronously, which facilitates the welding robot 9 to spot weld the blade 02 onto the lower plate 01. After the blade 02 is spot welded and fixed, the clamping mechanism 8 releases the clamp on the blade 02 and leaves the welding turntable 5 with the positioning table 7. The welding robot 9 then performs full welding on the blade 02. After the welding is completed, the upper plate 03 is placed on the blade 02 by manual or automated equipment. The welding robot 9 then welds the upper plate 03 and the blade 02. During this process, under the drive of the main drive mechanism 3, the positioning plate 42 and the welding turntable 5 rotate synchronously and intermittently to perform the loading, positioning and welding work of the blade 02.

[0067] Combined with appendix Figure 1 and attached Figure 10 As shown, the shifting mechanism 6 includes a movable frame 61 that travels on the processing table 1. The movable frame 61 is provided with a guide table 62. The guide table 62 is provided with a motor 63 and a threaded post 64. The motor 63 drives the threaded post 64 to rotate within the guide table 62. A lifting platform 65 is slidably provided on the front side of the guide table 62. The lifting platform 65 is provided with a threaded hole that mates with the threaded post 64. A cover platform 66 is provided at the bottom of the lifting platform 65. A positioning platform 7 is rotatably located below the cover platform 66.

[0068] As the core execution component for switching the working position of blade 02, the shifting mechanism 6 achieves precise transfer and attitude adjustment of blade 02 in different working areas of processing table 1 through the coordinated actions of horizontal shifting, vertical lifting and lowering and positioning table rotation, providing a suitable working position for subsequent clamping, welding, straightening and other processes.

[0069] The movable frame 61 can move stably along the preset track of the processing table 1, driving the guide table 62 and subsequent components to switch horizontal positions synchronously. When it is necessary to adjust the vertical height of the blade 02, the motor 63 starts and outputs power, driving the threaded column 64 to rotate inside the guide table 62. The lifting table 65 cooperates with the threaded column 64 through its threaded hole, so that the guide table 62 moves up and down, driving the bottom cover 66 to move up and down synchronously, realizing the vertical height adjustment of the positioning table 7 and the blade 02 it carries. The cover 66 provides rotational support for the positioning table 7. After the horizontal displacement and vertical lifting are in place, the positioning table 7 can rotate in conjunction with the auxiliary drive mechanism 44 and the main drive mechanism 3, which facilitates the position adjustment of the positioning and clamping mechanism 8.

[0070] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A water pump impeller welding device, comprising a processing table (1), wherein a welding robot (9) is provided on the processing table (1), characterized in that: The processing table (1) is equipped with a blade straightening mechanism (2). The blade straightening mechanism (2) includes a main drive mechanism (3), a blade positioning mechanism (4) and a welding turntable (5). The blade positioning mechanism (4) includes a rotating seat (41) and a positioning disk (42). The positioning disk (42) is fixed on the rotating seat (41). The main drive mechanism (3) drives the rotating seat (41) and the welding turntable (5) to rotate. The processing table (1) is equipped with a shifting mechanism (6), and a positioning table (7) is rotatably mounted on the shifting mechanism (6). Multiple clamping mechanisms (8) are installed at the bottom of the positioning table (7). The clamping mechanisms (8) clamp the blade (02). The shifting mechanism (6) transfers the clamping mechanism (8) that clamps the blade (02) from the blade positioning mechanism (4) to the welding turntable (5) through the positioning table (7). The lower plate (01) is mounted on the welding turntable (5). The welding robot (9) welds multiple blades (02) to the lower plate (01).

2. The impeller welding device for water pump processing according to claim 1, characterized in that: The positioning disk (42) includes a base (421) connected to the rotating seat (41). A fixed disk (423) is provided on the base (421). Multiple fixed plates (424) are evenly arranged on the fixed disk (423). A movable plate (425) is provided in the groove between adjacent fixed plates (424). The fixed plates (424) and the movable plates (425) are positioned and clamp the blade (02).

3. The impeller welding device for water pump processing according to claim 2, characterized in that: The positioning disk (42) is provided with a plurality of through slots (422) evenly distributed. A fixed platform (426) is installed in the through slot (422). A connecting frame (427) is hinged on the fixed platform (426) and connected to the movable plate (425). A torsion spring (428) is provided between the connecting frame (427) and the fixed platform (426). A stop (429) is provided at the bottom of the connecting frame (427). The positioning disk (42) is provided with an adjustment mechanism (43) that pushes the stop (429) to rotate so that the movable plate (425) contacts the blade (02) for clamping.

4. The impeller welding device for water pump processing according to claim 2, characterized in that: The adjustment mechanism (43) includes a cylinder (431), a floating ring (432) and a rotating ring (434). The positioning plate (42) is provided with a sliding column (412) connected to the chassis (421). The rotating ring (434) is provided with a through hole that slides with the sliding column (412). The output end of the cylinder (431) is connected to the floating ring (432). The floating ring (432) is provided with a plurality of rolling balls (433) that cooperate with the rotating ring (434). The rotating ring (434) is provided with a plurality of push rods (435) that cooperate with the abutment (429).

5. The impeller welding device for water pump processing according to claim 1, characterized in that: The blade positioning mechanism (4) also includes a secondary drive mechanism (44), which includes a motor (441) and a drive shaft (442). The motor (441) drives the drive shaft (442) to rotate at the central through hole of the rotating seat (41). The top of the drive shaft (442) is provided with a first truncated cone (443), and a second truncated cone (444) is provided on the first truncated cone (443) by bolts. Multiple positioning rods (445) are provided on the outer sides of both the first truncated cone (443) and the second truncated cone (444).

6. The impeller welding device for water pump processing according to claim 1, characterized in that: The blade straightening mechanism (2) has an elliptical ring platform (21) on the outside of the positioning disk (42) on its housing. The blade (02) is fed at the farthest point between the elliptical ring platform (21) and the positioning disk (42). At the closest point between the elliptical ring platform (21) and the positioning disk (42), the elliptical ring platform (21) pushes the blade (02) to be positioned on the positioning disk (42). The blade straightening mechanism (2) has a rotatable limiting pressure plate (24) on its housing. The limiting pressure plate (24) prevents the blade (02) from moving upward during positioning.

7. The impeller welding device for water pump processing according to claim 1, characterized in that: The clamping mechanism (8) includes a housing (81), a first clamp (82), a second clamp (83), and a hinge seat (84). The housing (81) is fixed in the bottom groove of the positioning platform (7). The hinge seat (84) is installed inside the housing (81). The first clamp (82) and the second clamp (83) are symmetrically hinged on the hinge seat (84). The top of the first clamp (82) and the second clamp (83) are provided with a second spring (821) connected to the housing (81), and the bottom of each is provided with a clamping plate (822). The adjacent clamping plates (822) are staggered.

8. The impeller welding device for water pump processing according to claim 7, characterized in that: The top of the housing (81) is provided with cylinder two (85), and the output end of cylinder two (85) is provided with drive frame (86). Drive frame (86) is slidably disposed inside the housing (81). Multiple push platforms (861) are hinged at the bottom of drive frame (86). One end of push platform (861) abuts against one side of gripper one (82) or gripper two (83), and the other end is provided with spring three (862) connected to drive frame (86).

9. The impeller welding device for water pump processing according to claim 8, characterized in that: The bottom groove of the housing (81) is provided with a mounting frame (87), and multiple sets of friction plates (871) are provided in the mounting frame (87). The first clamp (82) and the second clamp (83) pass through the gap between adjacent friction plates (871). The bottom of the housing (81) is provided with a lifting frame (88), and the lifting frame (88) is provided with a plate (881). The plate (881) is inserted into the transverse groove of the friction plate (871). Both ends of the lifting frame (88) are provided with a transmission platform (882) that slides with the housing (81). The inner side of the transmission platform (882) is provided with a transmission groove (883). Both ends of the drive frame (86) are provided with a vertical rod (863). The outer side of the bottom of the vertical rod (863) is provided with a wing platform (864). The wing platform (864) is located in the transmission groove (883) and cooperates with the bottom and top surfaces of the transmission groove (883).

10. The impeller welding device for water pump processing according to claim 5, characterized in that: The positioning platform (7) has a partition (71) at the center through hole, a positioning plate (72) at the bottom of the partition (71), a spline shaft (73) at the top of the positioning plate (72), a spline groove that mates with the spline shaft (73) on the partition (71), a limiting plate (74) at the top of the spline shaft (73), and a spring (75) at the top of the limiting plate (74) that connects to the positioning platform (7).

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