Positioning welding tool for preventing deviation of generator rotor

Abstract

The invention relates to the technical field of rotor welding, discloses a positioning and welding tool for preventing a generator rotor from shifting, and aims to solve the problem that automatic stacking and positioning are not easy to carry out before rotor punching sheets are welded in the prior art. Through linkage of the arc-shaped plate and the cleaning mechanism, ordered conveying and end face cleaning of punching sheets are completed, and the feeding cleanliness is guaranteed; through cooperation of a supporting block, a probe and a lifting control mechanism, accurate positioning and stacking of punching sheets according to patterns are achieved, deviation is avoided, meanwhile, through cooperation of a photoelectric sensor and an annular plate lifting mechanism, stable stacking and accurate number control of the punching sheets are achieved, and collision damage is reduced; the glue spraying mechanism enhances the stacking attaching performance, the laser welding head and the rotating mechanism are matched to guarantee the welding precision, and the motor C is linked with the slag discharging structure to achieve automatic cleaning of welding scraps. According to the whole scheme, manual operation is greatly reduced, the stacking and welding quality is improved, the operation efficiency is improved, the adaptability to punching sheets of multiple specifications is achieved, and the use flexibility of the device is enhanced.

Description

Technical Field

[0001] This invention relates to the field of rotor welding technology, and in particular to a positioning welding fixture for preventing generator rotor misalignment. Background Technology

[0002] Chinese Patent Publication No. CN222740521U discloses a rotor shaft welding machine, including an operating table. A three-way moving device and a mounting plate are installed on the operating table. A rotatable and adjustable laser welding device is installed on the moving end of the three-way moving device. At this time, the pressing end of the positioning component moves accordingly, so as to cooperate with the welding rotation to complete the welding operation at the assembly point. Therefore, it can realize automated welding, improve production efficiency, welding accuracy and quality.

[0003] Regarding the above and existing related technologies, the inventors believe that the following defects often exist: Although the device positions the rotor through the positioning cylinder, the rotor is generally composed of stacked rotor laminations, and the rotor laminations are uniformly provided with grooves for winding copper wire. However, the positioning cylinder does not restrict the position of the grooves, and the rotor laminations need to be stacked manually, which makes the preparation work before welding inefficient and affects the entire welding process. Therefore, there is room for improvement. Summary of the Invention

[0004] The technical problem to be solved by the present invention is that the existing technology has the disadvantage of not being able to automatically stack and position the rotor laminations before welding. To this end, we propose a positioning welding fixture for preventing generator rotor offset.

[0005] To achieve the above objectives, this application adopts the following technical solution: a positioning welding fixture for preventing generator rotor misalignment, comprising a circular conveyor table, a stacking cylinder installed on one side of the bottom end of the circular conveyor table, a bracket fixed on one side of the stacking cylinder, a control box installed on the outside of the bracket, a welding assembly installed on the top of the bracket, support blocks fixed in a ring at equal intervals on the upper part of the inner wall of the stacking cylinder, inclined surfaces provided on the bottom side of the support blocks away from the inner wall of the stacking cylinder, a connecting main pipe embedded in the inner wall of the stacking cylinder, a valve pipe connected to the inlet end of the connecting main pipe, nozzles uniformly connected to the inner side of the connecting main pipe, and nozzle outlets penetrating adjacent... The inside of the support block is flush with the inclined plane. Two photoelectric sensors are embedded on the inner wall of the stacking cylinder. A side box is fixed on one side of the stacking cylinder. A motor C is installed inside the side box. The upper output shaft of the motor C is connected to a fan-shaped plate. The fan-shaped plate is located above one side of the stacking cylinder. Probes are evenly slidably installed on the bottom of the outer edge of the fan-shaped plate. The lowest height of the probe is level with the top of the stacking cylinder. The top of each probe is connected to a connecting rope. The top of each connecting rope passes through the top of the fan-shaped plate. One end of multiple connecting ropes is connected to a lifting control mechanism. The lifting control mechanism is used to control the lifting of the probes during the rotation of the fan-shaped plate.

[0006] Preferably, a rotating plate is rotatably connected to the bottom center of the stacking cylinder. Guide rods are evenly distributed through the rotating plate, and an annular plate is connected to the top of the guide rods. An electric telescopic rod is installed at the bottom of each guide rod, and a movable plate is connected to the bottom of the electric telescopic rod. A fixed plate is set below the movable plate, and a motor B is installed at the top center of the fixed plate. The output end of motor B is connected to the center of the bottom of the movable plate. Rotor laminations are evenly placed on the annular conveyor table. The maximum outer diameter of the rotor laminations matches the inner diameter of the stacking cylinder. The rotor laminations are composed of an inner ring and circumferentially distributed outer teeth. The distribution interval and number of support blocks match the distribution of the corresponding outer tooth grooves on the rotor laminations. The guiding conveying width of the annular conveyor table matches the outer diameter of the rotor laminations.

[0007] Preferably, the photoelectric sensors are located on the inner wall of the stacking cylinder on the side away from the support, with one photoelectric sensor positioned at the top of the stacking cylinder and the other photoelectric sensor located between two adjacent support blocks.

[0008] Preferably, the lifting control mechanism includes a lifting column slidably installed inside the sector plate, the lifting column and the sector plate are slidably connected vertically, the bottom end of the lifting column extends to the outside of the sector plate and is equipped with a slider, the top end of the lifting column is connected to a pull rope, the top end of the pull rope passes through the top of the sector plate, a horizontal slide plate is slidably installed on the top of the sector plate, one side center of the horizontal slide plate is fixedly connected to one end of the pull rope, the other side of the horizontal slide plate is connected to one end of an adjacent connecting rope, an annular block is fixed inside the side box, an irregular groove is opened on the outside of the annular block, one end of the slider extends into the interior of the irregular groove, and the axis of the annular block and the rotation axis of the sector plate are collinearly distributed.

[0009] Preferably, the probe and the sector plate are connected by sliding vertically, multiple connecting ropes are distributed in parallel, and the irregular groove is formed by connecting the ends of the vertically distributed arc grooves. When the sector plate rotates into the side box, the lifting column is at its lowest position, the multiple connecting ropes are in a taut state, and the multiple probes are at their highest positions.

[0010] Preferably, a slag discharge pipe is connected to the bottom end of the stacking cylinder near the side box. A fan blade shaft runs through the inside of the slag discharge pipe. The top end of the fan blade shaft is rotatably connected to the bottom end of the side box. A small gear is sleeved on the fan blade shaft. The lower output shaft of the motor C runs through to the outside of the side box and is connected to a large gear. The large gear and the small gear mesh with each other.

[0011] Preferably, the welding assembly includes an electric push rod installed at the top of the bracket. The telescopic end of the electric push rod passes through the top of the bracket and is connected to a laser welding head. Longitudinal rods are fixed on both sides of the top of the bracket. The longitudinal rods are located on both sides of the laser welding head. The bottom ends of the two longitudinal rods are connected to an annular sensing pressure plate. The annular sensing pressure plate is slidably connected to the longitudinal rods through an annular groove at the top. The annular sensing pressure plate is located directly above the stacking cylinder.

[0012] Preferably, a conveyor is provided on one side of the circular conveyor platform, and grooves are evenly provided on the conveying path between the top conveyor of the circular conveyor platform and the stacking cylinder. A motor A is installed at the center of the circular conveyor platform, and a crossbar is installed at the output end of the motor A. Connecting rods are fixed at both ends of one side of the crossbar, and an arc plate is fixed at one end of the connecting rod. The bottom end of the arc plate abuts against the top conveying surface of the circular conveyor platform, and the arc shape of the arc plate matches the outer arc of the rotor lamination.

[0013] Preferably, the crossbars and connecting rods are vertically distributed, the inner wall of the arc plate is curved, the bottom surface of the groove gradually slopes downward from the center of the circular conveyor table, and the outer end of the groove extends to the outer edge of the bottom of the circular conveyor table.

[0014] Preferably, a cleaning mechanism is provided inside the crossbar. The cleaning mechanism includes a reciprocating screw that runs through the inside of the crossbar. The reciprocating screw and the crossbar are distributed in parallel. A connecting sleeve is fitted on the reciprocating screw. The bottom end of the connecting sleeve extends to the bottom of the crossbar and is fixed with a cleaning brush. The cleaning brush and the crossbar are distributed perpendicularly. One end of the reciprocating screw extends to the outer end of the crossbar and is connected to a bevel gear. A bevel gear ring is fixed to the outer edge of the top of the annular conveyor table. The bevel gear and the bevel gear ring mesh with each other. The length of the cleaning brush is adapted to the inner ring diameter of the rotor lamination. The distribution range of the bevel gear ring is adapted to the distribution range of the groove.

[0015] The technical effects and advantages of this invention are as follows: In this invention, the arc-shaped plate and cleaning mechanism work together to achieve orderly conveying and end-face cleaning of the stampings, ensuring the cleanliness of the feed. The support block, probe, and lifting control mechanism work together to achieve precise positioning and stacking of the stampings according to the pattern, preventing misalignment and ensuring the accuracy of subsequent laser welding. Simultaneously, the photoelectric sensor and the ring plate lifting mechanism work together to achieve stable stacking and precise quantity control of the stampings, reducing impact damage. The glue spraying mechanism enhances the stacking fit, the laser welding head and rotating mechanism work together to ensure welding accuracy, and the motor C-linked slag removal structure achieves automatic cleaning of welding chips. The overall solution significantly reduces manual operation, improves stacking and welding quality, increases work efficiency, and is compatible with multiple stamping specifications, enhancing the flexibility of the device. Attached Figure Description

[0016] The disclosure of this invention is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this invention. In the drawings, the same reference numerals are used to refer to the same parts: Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the three-dimensional structure of the groove distribution of the present invention; Figure 3 This is a schematic diagram of the three-dimensional structure of the support block distribution of the present invention; Figure 4 This is a schematic diagram of the three-dimensional structure of the annular plate distribution of the present invention; Figure 5 This is a schematic diagram of the three-dimensional structure of the sector plate of the present invention; Figure 6 This is a three-dimensional structural diagram of the lifting control mechanism of the present invention; Figure 7 This is a three-dimensional structural diagram of the cleaning mechanism of the present invention.

[0017] Legend: 1. Circular conveyor table; 11. Conveyor; 12. Groove; 13. Motor A; 14. Crossbar; 15. Connecting rod; 16. Arc plate; 17. Cleaning mechanism; 171. Reciprocating screw; 172. Connecting sleeve; 173. Cleaning brush; 174. Bevel gear; 175. Bevel gear ring; 2. Stacking cylinder; 21. Support block; 211. Inclined surface; 212. Nozzle; 213. Connecting main pipe; 214. Valve pipe; 22. Circular plate; 221. Rotating plate; 222. Movable plate; 2221. Electric telescopic rod; 2222. Guide rod; 223. Fixed plate; 2231, Motor B; 23, Slag discharge pipe; 231, Fan blade shaft; 232, Small gear; 3, Side box; 31, Fan-shaped plate; 32, Motor C; 33, Probe; 34, Lifting control mechanism; 341, Annular block; 342, Irregular groove; 343, Slider; 344, Lifting column; 345, Pull rope; 346, Horizontal sliding plate; 35, Connecting rope; 36, Large gear; 4, Bracket; 41, Laser welding head; 42, Electric push rod; 43, Longitudinal rod; 44, Annular sensing pressure plate; 5, Rotor lamination; 6, Control box; 7, Photoelectric sensor. Detailed Implementation

[0018] It is readily understood that, based on the technical solution of this invention, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of the invention. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative examples of the technical solution of this invention and should not be considered as the entirety of the invention or as limitations or restrictions on the technical solution of this invention.

[0019] Example 1: Refer to Figures 1-6As shown, the present invention provides a technical solution: a positioning welding fixture for preventing generator rotor misalignment, comprising a circular conveyor table 1, a stacking cylinder 2 installed on one side of the bottom end of the circular conveyor table 1, a bracket 4 fixed on one side of the stacking cylinder 2, a control box 6 arranged on the outer side of the bracket 4, a welding assembly arranged on the top of the bracket 4, support blocks 21 fixed in a ring at equal intervals on the upper part of the inner wall of the stacking cylinder 2, inclined surfaces 211 provided on the bottom side of the support blocks 21 away from the inner wall of the stacking cylinder 2, a connecting main pipe 213 embedded in the inner wall of the stacking cylinder 2, a valve pipe 214 connected to the inlet end of the connecting main pipe 213, nozzles 212 uniformly connected to the inner side of the connecting main pipe 213, and the outlets of the nozzles 212 penetrating the interior of adjacent support blocks 21. The stacking cylinder 2 is flush with the inclined plane 211. Two photoelectric sensors 7 are embedded on the inner wall of the stacking cylinder 2. A side box 3 is fixed on one side of the stacking cylinder 2. A motor C32 is installed inside the side box 3. The upper output shaft of the motor C32 is connected to a fan-shaped plate 31. The fan-shaped plate 31 is located above one side of the stacking cylinder 2. Probes 33 are evenly slidably installed on the bottom of the outer edge of the fan-shaped plate 31. The lowest height of the probes 33 is level with the top of the stacking cylinder 2. The top of each probe 33 is connected to a connecting rope 35. The top of each connecting rope 35 passes through the top of the fan-shaped plate 31. One end of multiple connecting ropes 35 is connected to a lifting control mechanism 34. The lifting control mechanism 34 is used to control the lifting of the probes 33 during the rotation of the fan-shaped plate 31.

[0020] The lifting control mechanism 34, in conjunction with the probe 33, facilitates the automatic stacking of rotor laminations 5 one by one according to their pattern structure. This reduces the manual stacking work required before welding the rotor laminations 5, ensuring the quality of the finished product after welding. Simultaneously, the two photoelectric sensors 7 and the annular plate 22 work together to achieve close-range stacking of the rotor laminations 5 layer by layer. This reduces vertical collisions between adjacent rotor laminations 5 during stacking, improves the stability of the rotor laminations 5 stacked on the annular plate 22, and effectively prevents damage to the rotor laminations 5. Furthermore, the photoelectric sensors 7 effectively count and control the number of stacked laminations, allowing for flexible adjustment of the welding process, improving the overall flexibility of the welding device, reducing manual operation steps, and increasing welding efficiency.

[0021] Reference Figure 1 , Figure 2As shown, a rotating plate 221 is rotatably connected to the bottom center of the stacking cylinder 2. Guide rods 2222 are evenly threaded through the rotating plate 221. The top ends of the guide rods 2222 are connected to an annular plate 22. During stacking, the annular plate 22 is located below the support block 21. Electric telescopic rods 2221 are installed at the bottom ends of the guide rods 2222. The bottom ends of the electric telescopic rods 2221 are connected to a movable plate 222. A fixed plate 223 is provided below the movable plate 222. The top end of the fixed plate 223 is... A motor B2231 is installed at the center. The output end of the motor B2231 is connected to the center of the bottom of the movable plate 222. Rotor laminations 5 are evenly placed on the annular conveyor table 1. The maximum outer diameter of the rotor laminations 5 is matched with the inner diameter of the stacking cylinder 2. The rotor laminations 5 are composed of an inner ring and circumferentially distributed outer teeth. The distribution interval and number of the support blocks 21 are matched with the distribution of the corresponding outer tooth grooves on the rotor laminations 5. The guiding conveying width of the annular conveyor table 1 is matched with the outer diameter of the rotor laminations 5.

[0022] The support block 21, nozzle 212, etc. are detachable from the stacking cylinder 2. The number and shape of the corresponding support block 21 can be adjusted according to the pattern of the actual rotor lamination 5, which improves the flexibility of the entire welding stacking work and makes it adaptable to the welding needs of various rotor specifications.

[0023] Reference Figure 3 As shown, the photoelectric sensor 7 is located on the inner wall of the stacking cylinder 2 away from the support 4. One of the photoelectric sensors 7 is positioned above the stacking cylinder 2, and the other photoelectric sensor 7 is located between two adjacent support blocks 21.

[0024] The upper photoelectric sensor 7 counts and monitors the number of rotor laminations 5 falling into the system. When a rotor lamination 5 is detected falling, the control box 6 controls the start motor C32 to automatically adjust the position of each rotor lamination 5, ensuring that the pattern placement between the stacked rotor laminations 5 is uniform. The lower photoelectric sensor 7 detects whether the rotor lamination 5 has fallen onto the annular plate 22, thereby controlling the start valve pipe 214 to spray glue onto the top of the rotor lamination 5. The glue increases the stacking stability between the upper and lower rotor laminations 5 and buffers the compressive stress during subsequent pressure welding to prevent damage to the rotor laminations 5.

[0025] Reference Figures 4-6As shown, the lifting control mechanism 34 includes a lifting column 344 slidably installed inside the sector plate 31. The lifting column 344 and the sector plate 31 are slidably connected vertically. The bottom end of the lifting column 344 extends to the outside of the sector plate 31 and is equipped with a slider 343. The top end of the lifting column 344 is connected to a pull rope 345. The top end of the pull rope 345 passes through the top of the sector plate 31. A horizontal slide plate 346 is slidably installed on the top of the sector plate 31. The center of one side of the horizontal slide plate 346 is fixedly connected to one end of the pull rope 345. The other side of the horizontal slide plate 346 is connected to one end of an adjacent connecting rope 35. An annular block 341 is fixed inside the side box 3. An irregular groove 342 is opened on the outer side of the annular block 341. One end of the slider 343 extends into the interior of the irregular groove 342. The axis of the annular block 341 and the rotation axis of the sector plate 31 are collinearly distributed.

[0026] The rotation of the sector plate 31 causes the lifting column 344 to rotate synchronously, thereby moving the slider 343 along the guide of the irregular groove 342. This causes the lifting column 344 to slide up and down inside the sector plate 31. When the rotor laminations 5 are randomly stacked on the support block 21, the motor C32 is started, causing the sector plate 31 to move above the stacking cylinder 2, that is, the bottom end of the probe 33 is above the top surface of one side of the rotor lamination 5. At this time, the lifting column 344 moves from bottom to top, thereby making the connecting rope 35 slack. Utilizing the structure of the external teeth on the rotor laminations 5, some probes 33 can be automatically inserted into the tooth groove position. With the continuous rotation of the sector plate 31, the rotor laminations 5 are pushed, causing them to rotate in the stacking cylinder 2 and rotate to an angle where they are engaged with the support block 21. The support at the bottom of the rotor laminations 5 disappears, and they automatically fall onto the annular plate 22.

[0027] Reference Figure 6 As shown, the probe 33 and the sector plate 31 are connected vertically, and multiple connecting ropes 35 are distributed in parallel. The irregular groove 342 is composed of arc grooves distributed vertically and vertically connected end to end. When the sector plate 31 rotates into the side box 3, the lifting column 344 is in the lowest position, the multiple connecting ropes 35 are in a tensioned state, and the multiple probes 33 are in the highest position.

[0028] Utilizing the structural features of the irregular groove 342, the lifting column 344 can move up and down as it rotates horizontally with the fan-shaped plate 31. This causes the top of the lifting column 344 to pull on the horizontal sliding plate 346, thereby loosening the connecting rope 35. Under the action of gravity, the probe 33 will be inserted into the tooth groove on the rotor lamination 5. Utilizing the horizontal rotation, the probe 33 pushes the rotor lamination 5 to rotate inside the stacking cylinder 2, thereby adjusting the distribution of the outer teeth on the rotor lamination 5.

[0029] Working principle: When the rotor lamination 5 moves from the circular conveyor 1 to the top of the stacking cylinder 2, it falls randomly onto the support block 21 under the action of gravity. When the external teeth on the rotor lamination 5 are perfectly misaligned with the position of the support block 21, the rotor lamination 5 will fall directly onto the annular plate 22. During the falling process, the upper and lower photoelectric sensors 7 detect and count the falling rotor lamination 5 respectively. When the lower photoelectric sensor 7 detects the rotor lamination 5, it will control the start valve pipe 214 to open, so that the nozzle 212 sprays glue onto the top of the inner ring of the rotor lamination 5, so as to improve the contact stability between the next rotor lamination 5 when it is stacked.

[0030] When the rotor lamination 5 falls onto the support block 21 at a random orientation, the photoelectric sensor 7 above detects the falling signal of the rotor lamination 5, thereby controlling the starter motor C32 to rotate. Motor C32 drives the sector plate 31 to rotate horizontally from inside the side box 3 into the stacking cylinder 2, thus moving the probe 33 above the rotor lamination 5. At this time, the slider 343 moves from the lower arc groove to the upper arc groove of the irregular groove 342. As the rotation continues, the lifting column 344 moves from the lowest end to the highest end, simultaneously loosening the connecting rope 35. The structural features of the lamination 5 allow the bottom ends of some probes 33 to be inserted into the tooth grooves on the rotor lamination 5 under the action of gravity, and to be reset as the sector plate 31 rotates. This causes the probes 33 to exert a pushing force on the rotor lamination 5, thereby causing the rotor lamination 5 to rotate inside the stacking cylinder 2 until the tooth groove position on the rotor lamination 5 is misaligned with the support block 21. This allows the rotor lamination 5 to fall onto the annular plate 22 at a specific angle, achieving consistency in the external tooth angle between the upper and lower stacked rotor laminations 5 and improving the subsequent welding quality.

[0031] Meanwhile, as the photoelectric sensor 7 above detects the falling of the rotor laminations 5, it counts the number of rotor laminations 5 during this process and controls the electric telescopic rod 2221 to shorten. That is, in the initial state, the annular plate 22 is at its highest position. After each layer of rotor laminations 5 falls, the corresponding height of the falling annular plate 22 will be achieved, thereby realizing the stable stacking effect of the rotor laminations 5 one by one and reducing the impact between the rotor laminations 5 during the stacking process.

[0032] Example 2: Refer to Figures 4-6 As shown, based on Embodiment 1, the starting rotation of motor C32 generates an outward suction force inside the slag discharge pipe 23, thereby discharging the debris remaining inside the stacking cylinder 2 after welding.

[0033] Reference Figure 4As shown, the bottom end of the stacking cylinder 2 near the side box 3 is connected to a slag discharge pipe 23. A fan blade shaft 231 passes through the inside of the slag discharge pipe 23. The top end of the fan blade shaft 231 is rotatably connected to the bottom end of the side box 3. A small gear 232 is sleeved on the fan blade shaft 231. The lower output shaft of the motor C32 passes through to the outside of the side box 3 and is connected to a large gear 36. The large gear 36 and the small gear 232 mesh with each other.

[0034] As motor C32 drives the upper and lower output shafts to rotate, the large gear 36 drives the small gear 232 to rotate. Here, the diameter of the small gear 232 is smaller than that of the large gear 36, which generates an outward suction force inside the slag discharge pipe 23, so as to automatically discharge the welding debris inside the stacking cylinder 2.

[0035] Reference Figure 2 As shown, the welding assembly includes an electric push rod 42 mounted on the top of the bracket 4. The telescopic end of the electric push rod 42 passes through the top of the bracket 4 and is connected to a laser welding head 41. Longitudinal rods 43 are fixed on both sides of the top of the bracket 4. The longitudinal rods 43 are located on both sides of the laser welding head 41. The bottom ends of the two longitudinal rods 43 are connected to an annular sensing pressure plate 44. The annular sensing pressure plate 44 is slidably connected to the longitudinal rods 43 through an annular groove at the top. The annular sensing pressure plate 44 is located directly above the stacking cylinder 2.

[0036] Using the pressure sensor at the bottom of the annular sensing plate 44, after the rotor laminations 5 are stacked, the annular plate 22 is raised again, so that the rotor laminations 5 are subjected to the squeezing effect from above and below, which promotes the adhesion between the inner rings of the rotor laminations 5. At this time, due to the previous glue spraying effect, the glue can buffer the squeezing force and promote the adhesion between the rotor laminations 5, thereby improving the quality of subsequent welding.

[0037] Working principle: After multiple rotor laminations 5 are stacked on the annular plate 22, the control box 6 controls the electric telescopic rod 2221 to extend to the initial position under the counting effect of the photoelectric sensor 7. At this time, the top of the rotor lamination 5 contacts and is pressed against the bottom of the annular sensing pressure plate 44. The annular sensing pressure plate 44 detects the pressing pressure, thereby controlling the electric push rod 42 and the laser welding head 41 to start, so that the bottom of the laser welding head 41 descends and welds along the inner ring of the rotor lamination 5. At the same time, according to the position of the welding groove on the inner ring of the rotor lamination 5, the control box 6 controls the starting motor B2231 to drive the rotating plate 221 to rotate, so that the annular plate 22 drives the rotor lamination 5 to rotate horizontally, thereby achieving a multi-point welding effect.

[0038] Example 3: Reference Figure 1 , Figure 2 , Figure 7As shown, based on Embodiment 1 and Embodiment 2, the motor A13, the arc plate 16, the cleaning mechanism 17, etc. are used to realize the automatic feeding and cleaning of the rotor laminations 5, thereby further improving the efficiency of subsequent stacking and welding.

[0039] Reference Figure 2 As shown, a conveyor 11 is provided on one side of the circular conveyor platform 1. Grooves 12 are evenly provided on the conveying path between the top conveyor 11 and the stacking cylinder 2. A motor A13 is installed at the center of the circular conveyor platform 1. A crossbar 14 is installed at the output end of the motor A13. Connecting rods 15 are fixed at both ends of one side of the crossbar 14. An arc plate 16 is fixed at one end of the connecting rods 15. The bottom end of the arc plate 16 abuts against the top conveying surface of the circular conveyor platform 1. The arc shape of the arc plate 16 is compatible with the outer arc of the rotor lamination 5.

[0040] By utilizing the horizontal rotation of the crossbar 14, in conjunction with the action of the arc plate 16, the arc plate 16 can contact the rotor laminations 5 on the conveyor 11 during rotation. With continuous rotation, the arc plate 16 pushes the rotor laminations 5 to move stably along the conveying surface at the top of the circular conveyor table 1, and only one is conveyed at a time, thereby achieving the effect of sequential stacking of multiple rotor laminations 5.

[0041] Reference Figure 7 As shown, the crossbar 14 and the connecting rod 15 are vertically distributed, the inner wall of the arc plate 16 is curved, the bottom surface of the groove 12 gradually slopes downward from the center of the circular conveyor table 1, and the outer end of the groove 12 extends to the outer edge of the bottom of the circular conveyor table 1.

[0042] The groove 12 is used to facilitate the outward conveying and discharge of dust that falls during the conveying of rotor lamination 5. At the same time, the inner wall structure of the arc plate 16 is used to create a certain outward pressing force on the outer edge of the top surface of the rotor lamination 5. As a result, when the rotor lamination 5 moves to the top of the stacking cylinder 2, it will not directly tilt and fall, thus promoting the accuracy of the docking between the rotor lamination 5 and the stacking cylinder 2.

[0043] Reference Figure 7As shown, a cleaning mechanism 17 is provided inside the crossbar 14. The cleaning mechanism 17 includes a reciprocating screw 171 that passes through the inside of the crossbar 14. The reciprocating screw 171 and the crossbar 14 are distributed in parallel. A connecting sleeve 172 is sleeved on the reciprocating screw 171. The bottom end of the connecting sleeve 172 extends to the bottom of the crossbar 14 and is fixed with a cleaning brush 173. The cleaning brush 173 and the crossbar 14 are distributed perpendicularly. One end of the reciprocating screw 171 extends to the outer end of the crossbar 14 and is connected with a bevel gear 174. A bevel gear ring 175 is fixed on the outer edge of the top of the annular conveyor table 1. The bevel gear 174 and the bevel gear ring 175 mesh with each other. The length of the cleaning brush 173 is adapted to the inner ring diameter of the rotor lamination 5. The distribution range of the bevel gear ring 175 is adapted to the distribution range of the groove 12.

[0044] The rotation of the crossbar 14 keeps the bevel gear 174 and bevel ring 175 meshing, which causes the reciprocating screw 171 to rotate, thus achieving the back-and-forth reciprocating movement of the cleaning brush 173. This allows the top of the rotor lamination 5 to be cleaned. Since the cleaning direction is always tangential to the circle, it does not affect the conveying movement of the rotor lamination 5.

[0045] Working principle: The rotor lamination 5 is placed on the conveyor 11 for conveying. The start and stop frequency of the conveyor 11 and the speed of the motor A13 are matched by the control box 6. When the arc plate 16 rotates and passes the conveyor 11, the inner wall of the arc plate 16 pushes the side wall of the rotor lamination 5, so that the rotor lamination 5 is conveyed in an arc shape along the top of the circular conveyor table 1. During the conveying process, since the bevel gear 174 is always meshed with the bevel gear ring 175, the reciprocating screw 171 is in a self-rotating state, so that the cleaning brush 173 sweeps back and forth along the top surface of the rotor lamination 5, keeping the inner ring end face of the rotor lamination 5 clean, thereby further improving the effect of subsequent stacking or glue spraying.

[0046] The technical scope of this invention is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this invention, and all such modifications and variations should fall within the protection scope of this invention.

Claims

1. A positioning welding fixture for preventing generator rotor misalignment, characterized in that, The system includes a circular conveyor table, a stacking cylinder mounted on one side of its bottom end, a support fixed to one side of the stacking cylinder, a control box mounted on the outer side of the support, and a welding assembly mounted on the top of the support. Support blocks are fixed in a ring at equal intervals on the upper part of the inner wall of the stacking cylinder. The bottom of each support block has an inclined surface on the side away from the inner wall of the stacking cylinder. A connecting main pipe is embedded in the inner wall of the stacking cylinder. A valve pipe is connected to the inlet end of the connecting main pipe. Nozzles are evenly connected to the inner side of the connecting main pipe. The outlets of the nozzles penetrate the interior of adjacent support blocks and are flush with the inclined surfaces. The inner wall of the stacking cylinder... Two photoelectric sensors are embedded in the wall, one above the other. A side box is fixed to one side of the stacking cylinder. A motor C is installed inside the side box. The upper output shaft of the motor C is connected to a sector plate. The sector plate is located above one side of the stacking cylinder. Probes are evenly slidably installed on the bottom of the outer edge of the sector plate. The lowest height of the probes is level with the top of the stacking cylinder. Each probe is connected to a connecting rope at its top. The top of each connecting rope extends through the top of the sector plate. One end of multiple connecting ropes is connected to a lifting control mechanism. The lifting control mechanism is used to control the lifting of the probes during the rotation of the sector plate.

2. The positioning and welding fixture for preventing generator rotor misalignment according to claim 1, characterized in that: A rotating plate is rotatably connected to the bottom center of the stacking cylinder. Guide rods are evenly distributed through the rotating plate. The top of the guide rods are connected to an annular plate. An electric telescopic rod is installed at the bottom of each guide rod. The bottom of the electric telescopic rod is connected to a movable plate. A fixed plate is set below the movable plate. A motor B is installed at the top center of the fixed plate. The output end of motor B is connected to the center of the bottom of the movable plate. Rotor laminations are evenly placed on the annular conveyor platform. The maximum outer diameter of the rotor laminations matches the inner diameter of the stacking cylinder. The rotor laminations are composed of an inner ring and circumferentially distributed outer teeth. The distribution interval and number of the support blocks match the distribution of the corresponding outer tooth grooves on the rotor laminations. The guiding conveying width of the annular conveyor platform matches the outer diameter of the rotor laminations.

3. The positioning and welding fixture for preventing generator rotor misalignment according to claim 1, characterized in that: The photoelectric sensors are located on the inner wall of the stacking cylinder away from the support, with one of the photoelectric sensors positioned at the top of the stacking cylinder and the other photoelectric sensor located between two adjacent support blocks.

4. The positioning and welding fixture for preventing generator rotor misalignment according to claim 2, characterized in that: The lifting control mechanism includes a lifting column slidably installed inside the fan-shaped plate. The lifting column and the fan-shaped plate are slidably connected vertically. The bottom end of the lifting column extends to the outside of the fan-shaped plate and is equipped with a slider. The top end of the lifting column is connected to a pull rope, and the top end of the pull rope passes through the top of the fan-shaped plate. A horizontal sliding plate is slidably installed on the top of the fan-shaped plate. The center of one side of the horizontal sliding plate is fixedly connected to one end of the pull rope, and the other side of the horizontal sliding plate is connected to one end of an adjacent connecting rope. An annular block is fixed inside the side box. An irregular groove is opened on the outer side of the annular block. One end of the slider extends into the interior of the irregular groove. The axis of the annular block and the rotation axis of the fan-shaped plate are collinearly distributed.

5. The positioning and welding fixture for preventing generator rotor misalignment according to claim 4, characterized in that: The probe and the sector plate are connected vertically, the multiple connecting ropes are distributed in parallel, the irregular groove is formed by connecting the ends of the vertically distributed arc grooves, when the sector plate rotates into the side box, the lifting column is at the lowest position, the multiple connecting ropes are in a taut state, and the multiple probes are at the highest position.

6. The positioning and welding fixture for preventing generator rotor misalignment according to claim 5, characterized in that: The bottom end of the stacking cylinder near the side box is connected to a slag discharge pipe. A fan blade shaft runs through the inside of the slag discharge pipe. The top end of the fan blade shaft is rotatably connected to the bottom end of the side box. A small gear is sleeved on the fan blade shaft. The lower output shaft of the motor C runs through to the outside of the side box and is connected to a large gear. The large gear and the small gear mesh with each other.

7. The positioning and welding fixture for preventing generator rotor misalignment according to claim 1, characterized in that: The welding assembly includes an electric push rod mounted on the top of the support. The telescopic end of the electric push rod extends through the top of the support and is connected to a laser welding head. Longitudinal rods are fixed on both sides of the top of the support. The longitudinal rods are located on both sides of the laser welding head. The bottom ends of the two longitudinal rods are connected to an annular sensing pressure plate. The annular sensing pressure plate is slidably connected to the longitudinal rods through an annular groove at the top. The annular sensing pressure plate is located directly above the stacking cylinder.

8. The positioning and welding fixture for preventing generator rotor misalignment according to claim 2, characterized in that: A conveyor is provided on one side of the circular conveyor platform. Grooves are evenly provided on the conveying path between the top conveyor of the circular conveyor platform and the stacking cylinder. A motor A is installed at the center of the circular conveyor platform. A crossbar is installed at the output end of the motor A. Connecting rods are fixed at both ends of one side of the crossbar. An arc plate is fixed at one end of the connecting rod. The bottom end of the arc plate abuts against the top conveying surface of the circular conveyor platform. The arc shape of the arc plate matches the outer arc of the rotor lamination.

9. The positioning and welding fixture for preventing generator rotor misalignment according to claim 8, characterized in that: The crossbars and connecting rods are vertically distributed, the inner wall of the arc plate is curved, the bottom surface of the groove gradually slopes downward from the center of the circular conveyor table, and the outer end of the groove extends to the outer edge of the bottom of the circular conveyor table.

10. The positioning and welding fixture for preventing generator rotor misalignment according to claim 9, characterized in that: The crossbar is equipped with a cleaning mechanism, which includes a reciprocating lead screw that runs through the crossbar. The reciprocating lead screw is parallel to the crossbar and is fitted with a connecting sleeve. The bottom end of the connecting sleeve extends to the bottom of the crossbar and is fixed with a cleaning brush. The cleaning brush is perpendicular to the crossbar. One end of the reciprocating lead screw extends to the outer end of the crossbar and is connected to a bevel gear. A bevel gear ring is fixed to the outer edge of the top of the annular conveyor table. The bevel gear and the bevel gear ring mesh with each other. The length of the cleaning brush is adapted to the inner ring diameter of the rotor lamination, and the distribution range of the bevel gear ring is adapted to the distribution range of the grooves.

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