A rotating device for spot welding of a stator core assembly

Abstract

The application discloses a rotating device for stator core group spot welding, and particularly relates to the technical field of spot welding, and comprises a workbench, a controller is fixedly connected to the middle part of the upper end of the workbench, a conveying mechanism is fixedly connected to the left side of the controller, a conveying mechanism is fixedly connected to the upper end of the workbench, a discharging mechanism is fixedly connected to the upper end of the conveying mechanism, and a processing structure is fixedly connected to one side of the conveying mechanism. The rotating device for stator core group spot welding is characterized in that the stable clamping and coaxial alignment of the stator core group are realized through the setting of the sliding clamping cooperation spot welding action, the rotation action is involved in the indexing when the toggle and the hinge press the sliding groove during the pressing, the hinge is deformed to isolate the rotation transmission during the return and rising, the welding and the rotation indexing are synchronously completed in the same action chain, the artificial adjustment angle and the repeated alignment requirement are reduced, the welding point position consistency and the beat stability are improved, and the influence of the rebounding and the moving on the welding point deviation is reduced.

Description

Technical Field

[0001] This invention relates to the field of spot welding technology, and in particular to a rotating device for spot welding stator core assemblies. Background Technology

[0002] The field of spot welding technology includes resistance welding technology that uses electrodes to apply pressure to a workpiece and pass current through it to locally heat and melt the contact area to form a weld. Its core content revolves around the supply method and parameter control of welding current, electrode structure and cooling method, workpiece positioning, clamping and pressurization mechanism, welding cycle and process stability control, and weld quality inspection and consistency assurance. It is usually applied to the rapid connection of sheet metal and structural components.

[0003] Among them, the rotating device for stator core spot welding refers to a special mechanism used for circumferential rotation and angular positioning of stator core laminations or core assemblies at the spot welding station. The technical issues it addresses include stator core support and coaxial positioning, rotation drive and speed control, indexing positioning and angle locking, axial limiting and radial clamping during spot welding, and repeated alignment of welding positions. It typically uses a support base and a rotating table structure to form a load-bearing system. The inner hole of the stator core is coaxially positioned by a central positioning shaft or positioning sleeve. The outer circle or end face is clamped and fixed by a gripper or clamping ring. The rotation is achieved by a motor and a reduction mechanism or gear ring transmission. Angle indexing and locking are achieved by an indexing plate and positioning pins or ratchet mechanisms. Axial movement is controlled by a limiting block and a clamping mechanism. Positioning reference holes or scale marks are set on the circumference of the rotating table for weld point alignment. Combined with the fixed position of the spot welding electrodes, the stator core is rotated and stably positioned point by point during the welding process.

[0004] Existing rotary tables rely on motor reduction or gear ring drive to achieve circumferential rotation. The indexing plate positioning pin or ratchet lock needs to be adjusted separately. The fixed position of the spot welding electrode and the workpiece rotation lack linkage constraints. The separation of welding clamping and rotation indexing leads to discontinuous cycle. During welding, the axial limit and radial clamping may still have slight displacement due to thermal deformation or electrode impact after rotation positioning. Repeated alignment relies on manual verification of scale holes or marks, which easily leads to inconsistent weld point angles and spacing. In continuous spot welding scenarios, it affects the stability and consistency of welding. Summary of the Invention

[0005] The main objective of this invention is to provide a rotating device for spot welding stator core assemblies, which can effectively solve the problems mentioned above.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0007] A rotating device for spot welding stator core assemblies includes a worktable, a controller fixedly connected to the middle of the upper end of the worktable, a conveying mechanism fixedly connected to the left side of the controller, a transport mechanism fixedly connected to the upper end of the worktable, a feeding mechanism fixedly connected to the upper end of the transport mechanism, and a processing structure fixedly connected to one side of the conveying mechanism.

[0008] The processing structure includes a fixed block, a sliding block is fixedly connected to the upper end of the fixed block, a clamping mechanism is fixedly connected to the upper end of the sliding block, and a spot welding structure is fixedly connected to the upper end of the clamping mechanism.

[0009] Preferably, the transport mechanism includes four support legs, each of the four support legs having a connecting frame fixedly connected to one side close to each other. A motor is fixedly connected to the right side of the rear connecting frame. Two rotating rods are rotatably connected to the sides of the two connecting frames that are close to each other. A conveyor belt is fixedly connected to the outer surface of each of the two rotating rods. A transmission wheel is fixedly connected to the rear of the left rotating rod, and a feeding mechanism is wound around the outer surface of the transmission wheel.

[0010] Preferably, the feeding mechanism includes two connecting legs, both of which are fixedly connected to two connecting frames. The upper ends of the two connecting legs are fixedly connected to a housing. A feeding wheel is rotatably connected to the inner cavity of the housing. A transmission belt is wound around the rear of the feeding wheel, and the other side of the transmission belt is wound around the transmission wheel.

[0011] Preferably, the conveying mechanism includes a second outer shell, a third hydraulic cylinder fixedly connected to the inner cavity of the second outer shell, a telescopic column slidably connected to the output end of the third hydraulic cylinder, a pusher plate fixedly connected to the upper end of the telescopic column, a first spring fixedly connected to the upper end of the pusher plate, a lifting column fixedly connected to the upper end of the first spring, a fixing ring slidably connected to the bottom of the lifting column, a pushing mechanism fixedly connected to the front of the outer surface of the second outer shell, a second connecting pipe fixedly connected to the rear of the outer surface of the second outer shell, and solenoid valves provided at the connection points between the outer surface of the second outer shell and the pushing mechanism and the second connecting pipe.

[0012] Preferably, the pushing mechanism includes a connecting pipe, the other side of which is fixedly connected to the front of the outer surface of the outer shell, a fixed shell is fixedly connected to the other side of the connecting pipe, an I-shaped sliding plate is slidably connected to the inner cavity of the fixed shell, a spring is fixedly connected to the rear of the I-shaped sliding plate, and the other side of the spring is fixedly connected to the rear of the fixed shell. The I-shaped sliding plate is used to push the stator core assembly.

[0013] Preferably, the fixing block is fixedly connected to the upper end of the workbench, and two sliding strips are fixedly connected to the upper end of the fixing block. An electric telescopic rod is fixedly connected to one side of the two sliding strips that are close to each other. The spot welding structure is used to spot weld the stator core assembly.

[0014] Preferably, the clamping mechanism includes a connecting block, a hydraulic cylinder is fixedly connected to the rear of the connecting block, a sliding rod is fixedly connected to the output end of the hydraulic cylinder, a rotating mechanism is rotatably connected to the front of the sliding rod, and a pneumatic chuck is slidably connected to the inner surface of the rotating mechanism. The pneumatic chuck is used to clamp the stator core assembly.

[0015] Preferably, the rotating mechanism includes a rotating ring, the outer surface of which is provided with a plurality of sliding grooves, the plurality of sliding grooves being adapted to the number of welding points of the stator core assembly, four sliding bars II being fixedly connected to the inner surface of the rotating ring, the four sliding bars II being slidably connected to the outer surface of the pneumatic chuck, a rotating ring being fixedly connected to the rear of the rotating ring, and the rotating ring being slidably connected to the front of the sliding rod I.

[0016] Preferably, the spot welding structure includes a fixing plate, a connecting plate 1 is fixedly connected to the upper part of the fixing plate, a hydraulic cylinder 2 is fixedly connected to the upper end of the connecting plate 1, and a mating mechanism is slidably connected to the bottom of the hydraulic cylinder 2.

[0017] Preferably, the mating mechanism includes a second sliding rod, the upper end of which is slidably connected to a second hydraulic cylinder. A second connecting plate is fixedly connected to the bottom of the second sliding rod, a moving block is fixedly connected to the bottom of the second connecting plate, and a hinge is fixedly connected to the bottom of the moving block. When the second connecting plate performs electric welding on the stator core assembly, the second connecting plate drives the moving block to move downward. At this time, the hinge will not rotate, and the hinge will press the sliding groove, causing the sliding groove to rotate.

[0018] When the hinge is lifted by the actuating block, the hinge will deform to prevent the rotating ring from rotating.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. This invention achieves stable clamping and coaxial alignment of the stator core assembly by setting up a sliding clamping mechanism in conjunction with spot welding. The hydraulic drive drives the sliding rod and connecting plate to press down to complete the welding clamping stroke. When the sliding rod and hinge press down, they press the sliding groove to induce rotational movement to participate in indexing. During the return stroke, the hinge deformation isolates the rotational transmission to avoid misrotation. Welding clamping and rotational indexing are completed synchronously in the same action chain, reducing the need for manual angle adjustment and repeated alignment, improving the consistency of weld point position and cycle stability, and reducing the impact of springback on weld point offset.

[0021] 2. This invention utilizes a motor-driven rotating rod and conveyor belt in the transport mechanism to transport the stator core assembly. This, combined with the unloading wheel of the unloading mechanism, ensures a smooth transition, preventing deviation and collisions. The hydraulic cylinders of the conveying mechanism, with their three-drive lifting columns, lift the material while simultaneously pushing the material through a coordinated mechanism, improving loading efficiency and material protection. The pneumatic chucks of the clamping mechanism, working in conjunction with the sliding grooves of the rotating mechanism, achieve stable clamping and precise rotational positioning. The spot welding structure enables multi-point spot welding, and the electric telescopic rod adapts to materials of different specifications. Overall, this invention improves spot welding efficiency and quality, reduces labor costs, ensures product consistency, and meets the needs of large-scale production. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the overall structure of the present invention from another perspective;

[0024] Figure 3 This is a schematic diagram of the overall structure of the transportation mechanism of the present invention;

[0025] Figure 4 This is a cross-sectional view of the overall structure of the feeding mechanism of the present invention;

[0026] Figure 5 This is a schematic diagram showing the cooperation between the processing structure and the conveying mechanism of the present invention;

[0027] Figure 6 This is a partial structural cross-sectional view of the conveying mechanism of the present invention;

[0028] Figure 7 This is a schematic diagram of the overall structure of the processing structure of the present invention;

[0029] Figure 8 This is a schematic diagram of the overall structure of the clamping mechanism of the present invention;

[0030] Figure 9 This is a schematic diagram of the overall structure of the rotating mechanism of the present invention;

[0031] Figure 10 This is a schematic diagram of the overall structure of the driving mechanism of the present invention.

[0032] In the diagram: 1. Workbench; 2. Controller; 3. Transport mechanism; 31. Support leg; 32. Connecting frame; 33. Motor; 34. Rotating rod; 35. Conveyor belt; 36. Drive wheel; 4. Unloading mechanism; 41. Connecting leg; 42. Outer shell; 43. Drive belt; 44. Unloading wheel; 5. Processing structure; 51. Fixing block; 52. Sliding bar; 53. Electric telescopic rod; 54. Sliding block; 55. Clamping mechanism; 551. Connecting block; 552. Hydraulic cylinder; 553. Sliding rod; 554. Rotating mechanism; 5541. Rotating ring; 5542. Slide groove; 5543. Rotating wheel. 5544. Moving ring; 5545. Sliding bar II; 555. Pneumatic chuck; 56. Spot welded structure; 561. Fixed plate; 562. Connecting plate I; 563. Hydraulic cylinder II; 564. Coordinating mechanism; 5641. Sliding rod II; 5642. Connecting plate II; 5643. Actuating block; 6. Conveying mechanism; 61. Outer shell II; 62. Hydraulic cylinder III; 63. Telescopic column; 64. Pushing plate; 65. Fixed ring; 66. Spring I; 67. Lifting column; 68. Pushing mechanism; 681. Connecting pipe I; 682. Fixed shell; 683. I-shaped sliding plate; 684. Spring II; 69. Connecting pipe II. Detailed Implementation

[0033] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0034] Example 1, please refer to Figure 1 , Figure 2 as well as Figure 7 As shown, a rotating device for spot welding stator core assemblies includes a workbench 1. A controller 2 is fixedly connected to the middle of the upper end of the workbench 1. A conveying mechanism 6 is fixedly connected to the left side of the controller 2. The conveying mechanism 6 is responsible for pushing the stator core assembly to the processing station and also has a good material protection effect. A transport mechanism 3 is fixedly connected to the upper end of the workbench 1. The transport mechanism 3 undertakes the initial lateral transport task of the stator core assembly. A feeding mechanism 4 is fixedly connected to the upper end of the transport mechanism 3. The feeding mechanism 4 can assist the stator core assembly to smoothly transition from the transport mechanism 3 to the conveying mechanism 6, avoid material deviation or collision during the transition, and improve the continuity of material transport. A processing structure 5 is fixedly connected to one side of the conveying mechanism 6. The processing structure 5 is the core mechanism for realizing the clamping, spot welding and rotation positioning of the stator core assembly.

[0035] The processing structure 5 includes a fixed block 51, which is fixedly connected to the upper end of the worktable 1 to provide a stable installation support for the entire processing structure 5 and ensure stability during spot welding. A sliding block 54 is fixedly connected to the upper end of the fixed block 51. The sliding block 54 can move laterally along the sliding bar 52 at the upper end of the fixed block 51. A clamping mechanism 55 is fixedly connected to the upper end of the sliding block 54. The clamping mechanism 55 is responsible for clamping the stator core assembly to ensure that the material does not shift during spot welding. A spot welding structure 56 is fixedly connected to the upper end of the clamping mechanism 55. The spot welding structure 56 is responsible for performing spot welding operations on the stator core assembly and can cooperate with the rotating mechanism 554 to achieve multi-point welding.

[0036] For further details, please refer to Figure 3 and Figure 4 As shown, the four support legs 31 are symmetrically distributed to provide stable support for the transport mechanism 3, effectively distributing the weight of the mechanism and improving its stability during operation. Connecting frames 32 are fixedly connected to the sides of the four support legs 31 that are close to each other. The connecting frames 32 connect the support legs 31 to the rotating rods 34, forming a complete load-bearing structure for the transport mechanism 3. A motor 33 is fixedly connected to the right side of the rear connecting frame 32. The motor 33 serves as the power source for the transport mechanism 3, outputting stable power to provide continuous driving force for material conveying. Two rotating rods 34 are rotatably connected to the sides of the two connecting frames 32 that are close to each other. The two rotating rods 34 cooperate to form the conveyor belt 3. 5. The system provides installation support and allows synchronous rotation to ensure the smooth operation of the conveyor belt 35. The outer surfaces of the two rotating rods 34 are fixedly connected to the conveyor belt 35. The surface of the conveyor belt 35 has good load-bearing capacity and can stably support the stator core assembly to achieve lateral conveying and avoid swaying during material conveying. A transmission wheel 36 is fixedly connected to the rear of the left rotating rod 34. The transmission wheel 36 can rotate synchronously with the left rotating rod 34 to transmit power to the unloading mechanism 4. The outer surface of the transmission wheel 36 is wrapped with the unloading mechanism 4. The synchronous operation of the conveyor mechanism 3 and the unloading mechanism 4 is achieved through the transmission connection between the transmission wheel 36 and the unloading mechanism 4, which improves the coordination of equipment operation.

[0037] The feeding mechanism 4 includes two connecting legs 41, both of which are fixedly connected to two connecting frames 32, forming a stable connection between the feeding mechanism 4 and the transport mechanism 3 to prevent relative displacement during operation. The upper ends of the two connecting legs 41 are fixedly connected to a housing 42, which provides a closed installation space for the feeding wheel 44, effectively preventing dust and debris from entering and ensuring the long-term stable operation of the feeding wheel 44. The feeding wheel 44 is rotatably connected to the inner cavity of the housing 42. The surface of the feeding wheel 44 is designed to fit the contour of the stator core assembly, which can help the material to transition smoothly. A transmission belt 43 is wound around the rear of the feeding wheel 44. The transmission belt 43 plays a power transmission role, which can efficiently transmit the power of the transmission wheel 36 to the feeding wheel 44. The other side of the transmission belt 43 is wound around the transmission wheel 36. This transmission method has a simple structure and high transmission efficiency, which can ensure that the feeding wheel 44 and the rotating rod 34 operate synchronously, so that the material transition rhythm is consistent with the conveying rhythm, thereby effectively preventing the stator core assembly from shifting or bumping during the transition and improving the continuity and smoothness of material conveying.

[0038] Example 2 further elaborates on how to perform synchronous transmission based on Example 1. Please refer to [link / reference]. Figure 5 , Figure 6 as well as Figure 10As shown, the conveying mechanism 6 includes a second outer shell 61. The second outer shell 61 provides a closed mounting cavity for the internal components of the conveying mechanism 6, protecting the internal hydraulic components and spring structure from external interference and extending the service life of the components. A third hydraulic cylinder 62 is fixedly connected to the inner cavity of the second outer shell 61. The third hydraulic cylinder 62 serves as the power source of the conveying mechanism 6, outputting stable telescopic power to drive the movement of subsequent components. A telescopic column 63 is slidably connected to the output end of the third hydraulic cylinder 62. The telescopic column 63 can transmit the power of the third hydraulic cylinder 62 to the pusher plate 64, enabling the pusher plate 64 to move up and down. The pusher plate 64 is fixedly connected to the upper end of the telescopic column 63. The pusher plate 64 can squeeze the liquid in the inner cavity of the second outer shell 61 under the action of the telescopic column 63, thereby forming a hydraulic driving force. A first spring 66 is fixedly connected to the upper end of the pusher plate 64. The first spring 66 has good elastic buffering performance, which can buffer the impact force during the lifting process and avoid damage to the stator core assembly caused by rigid contact. A lifting column 67 is fixedly connected to the upper end of spring 66. The lifting column 67 can push the stator core assembly upward under the drive of spring 66 to achieve longitudinal lifting of the material. A fixing ring 65 is slidably connected to the bottom of the lifting column 67. The fixing ring 65 plays a guiding and limiting role for the lifting column 67 to ensure that the lifting column 67 moves along a fixed trajectory to increase the lifting degree. A pushing mechanism 68 is fixedly connected to the front of the outer surface of the outer shell 61. The pushing mechanism 68 is responsible for pushing the lifted stator core assembly to the clamping position. A connecting pipe 69 is fixedly connected to the rear of the outer surface of the outer shell 61. The connecting pipe 69 can cooperate with the pushing mechanism 68 to realize the circulation of hydraulic oil to ensure the stable operation of the hydraulic system. Solenoid valves are set at the connection points between the outer surface of the outer shell 61 and the pushing mechanism 68 and the connecting pipe 69. The solenoid valves are controlled by the controller 2 to control the on and off of the hydraulic oil, thereby realizing the synchronous action of the pushing mechanism 68 and the processing structure 5 and improving the coordination of equipment operation.

[0039] Furthermore, the actuating mechanism 68 includes a connecting pipe 681, the other side of which is fixedly connected to the front of the outer surface of the second outer shell 61, allowing hydraulic oil from the inner cavity of the second outer shell 61 to be introduced into the actuating mechanism 68. A fixed shell 682 is fixedly connected to the other side of the connecting pipe 681. The fixed shell 682 provides installation space for the I-shaped sliding plate 683 and the second spring 684 and can limit the movement trajectory of the I-shaped sliding plate 683. The I-shaped sliding plate 683 is slidably connected to the inner cavity of the fixed shell 682. The I-shaped sliding plate 683 can slide back and forth under the drive of hydraulic oil, and its front end is designed to fit the stator iron. The core assembly's pushing surface can push materials. A spring 684 is fixedly connected to the rear of the I-shaped sliding plate 683. The spring 684 has good reset performance and can drive the I-shaped sliding plate 683 to quickly reset after the hydraulic oil pressure disappears, preparing for the next push. The other side of the spring 684 is fixedly connected to the rear of the fixed shell 682, so that the elastic force of the spring 684 can stably act on the I-shaped sliding plate 683. The I-shaped sliding plate 683 is used to push the stator core assembly. Its smooth sliding can ensure a stable material pushing process, avoid material deviation during pushing, and improve the feeding rate.

[0040] Example 3 further elaborates on the purpose of electric welding the stator core assembly based on Examples 1 and 2. Please refer to [link / reference]. Figure 7 , Figure 8 , Figure 9 As shown, the fixed block 51 is fixedly connected to the upper end of the worktable 1, providing a stable installation base for the entire processing structure 5, ensuring no shaking during spot welding and improving welding accuracy. Two sliding bars 52 are fixedly connected to the upper end of the fixed block 51. The two sliding bars 52 are parallel to each other and can provide a stable lateral guide trajectory for the sliding block 54, ensuring smooth movement of the sliding block 54. An electric telescopic rod 53 is fixedly connected to the side of the two sliding bars 52 that are close to each other. The electric telescopic rod 53 can output stable telescopic power to drive the sliding block 54 to move laterally along the sliding bar 52, thereby driving the clamping mechanism 55 and the spot welding structure 56 to adjust laterally in sync. This design can improve the adaptability of the equipment to stator core assemblies of different specifications and expand the application range of the equipment. The spot welding structure 56 is used to spot weld the stator core assembly. Its spot welding head design can ensure good weld formation and improve welding quality.

[0041] Furthermore, the clamping mechanism 55 includes a connecting block 551, which connects the sliding block 54 and the hydraulic cylinder 552 to form a stable connection between the clamping mechanism 55 and the sliding block 54. The hydraulic cylinder 552 is fixedly connected to the rear of the connecting block 551. The hydraulic cylinder 552 outputs telescopic power to drive the sliding rod 553 to move back and forth, thereby adjusting the distance between the rotating mechanism 554 and the stator core assembly. The output end of the hydraulic cylinder 552 is fixedly connected to the sliding rod 553, which transmits the power of the hydraulic cylinder 552 to the rotating mechanism 554 and also serves as the rotating mechanism. 554 provides installation support. The front of the sliding rod 553 is rotatably connected to the rotating mechanism 554. The rotating mechanism 554 can rotate relative to the sliding rod 553, thereby driving the stator core assembly to rotate to achieve multi-point welding. The inner surface of the rotating mechanism 554 is slidably connected to the pneumatic chuck 555. The pneumatic chuck 555 can slide along the inner surface of the rotating mechanism 554 to adjust the clamping range. The pneumatic chuck 555 is used to clamp the stator core assembly. Its clamping force can be flexibly adjusted to ensure that the stator core assembly does not shift during spot welding and to prevent over-clamping that could cause core deformation, thus ensuring the integrity of the material structure.

[0042] Furthermore, the rotating mechanism 554 includes a rotating ring 5541, which is the core component of the rotating mechanism 554 and can drive the stator core assembly to rotate synchronously. The outer surface of the rotating ring 5541 has several grooves 5542, which are adapted to the number of welds on the stator core assembly. These grooves provide a positioning reference for the mating mechanism 564 of the spot welding structure 56, ensuring the angle of each rotation. The groove shape design of the grooves 5542 is adapted to the pressing action of the mating plates, enabling smooth transmission and mating. The inner surface of the rotating ring 5541 is fixed. Four sliding bars 5544 are connected, and the four sliding bars 5544 are evenly distributed and slidably connected to the outer surface of the pneumatic chuck 555. This provides stable guidance for the pneumatic chuck 555 and ensures that the pneumatic chuck 555 moves when clamping. A rotating ring 5543 is fixedly connected to the rear of the rotating ring 5541. The rotating ring 5543 is slidably connected to the front of the sliding bar 553. This connection method can reduce the friction when the rotating ring 5541 rotates, ensuring that the rotating ring 5541 rotates smoothly and improves the positioning, thereby enhancing the operating stability and service life of the rotating mechanism 554.

[0043] Furthermore, the spot welding structure 56 includes a fixing plate 561, which connects the sliding block 54 and the connecting plate 562 to provide a stable installation support for the spot welding structure 56 and ensure that the structure does not shake during spot welding. The connecting plate 562 is fixedly connected to the upper part of the fixing plate 561. The connecting plate 562 provides an installation platform for the hydraulic cylinder 563 so that the hydraulic cylinder 563 can output power stably. The hydraulic cylinder 563 is fixedly connected to the upper end of the connecting plate 562. The hydraulic cylinder 563 serves as the power source of the spot welding structure 56 and can output stable up and down extension power to drive the cooperating mechanism 564 and the spot welding head to realize the spot welding action. The bottom of the hydraulic cylinder 563 is slidably connected to the cooperating mechanism 564. The cooperating mechanism 564 can move up and down under the drive of the hydraulic cylinder 563, which can both cooperate to complete the spot welding operation and drive the rotating ring 5541 to rotate, ensuring that multi-point welding is carried out in an orderly manner.

[0044] Furthermore, the cooperating mechanism 564 includes a sliding rod 5641, the upper end of which is slidably connected to the hydraulic cylinder 563, transmitting power from the hydraulic cylinder 563 to the connecting plate 5642 while ensuring smooth up-and-down movement of the connecting plate 5642. The bottom of the sliding rod 5641 is fixedly connected to the connecting plate 5642, which has a spot welding head installed at its bottom, allowing direct spot welding of the stator core assembly. Its stable structure ensures uniform weld formation and improves welding quality. The bottom of the connecting plate 5642 is fixedly connected to a toggle block 5643, which moves up and down synchronously with the connecting plate 5642, thereby driving the hinge and rotating ring 5541 to cooperate in action. A hinge is fixedly connected to the bottom of 643. The hinge has good elastic deformation capability and can realize unidirectional transmission. When the connecting plate 5642 performs electric welding on the stator core assembly, the connecting plate 5642 drives the actuating block 5643 to move downward. At this time, the hinge will not rotate, but the hinge will press the slide groove 5542, causing the slide groove 5542 to drive the rotating ring 5541 to rotate, thereby realizing the point switching of the stator core assembly. When the hinge is driven upward by the actuating block 5643, the hinge will deform to avoid driving the rotating ring 5541 to rotate, ensuring that the positioning of each spot weld is correct. This unidirectional transmission design can effectively improve the accuracy of multi-point welding, ensure the consistency of the position of each weld point, and improve the welding quality of the product.

[0045] Working principle: First, the transport mechanism 3 is started by the controller 2. The motor 33 outputs power to drive the rotating rod 34 to rotate. The rotating rod 34 synchronously drives the transport belt 35 to rotate. The transport belt 35 can smoothly carry the stator core assembly and realize lateral transport. At the same time, the transmission wheel 36 at the rear of the left rotating rod 34 drives the unloading wheel 44 of the unloading mechanism 4 to rotate through the transmission belt 43. The unloading wheel 44 can assist the stator core assembly to smoothly transition from the transport belt 35 to the subsequent station. The unloading mechanism 4, which is composed of the connecting leg 41 and the outer shell 42, has a stable overall structure and can effectively prevent the stator core assembly from shifting or bumping during the transition, thus improving the continuity of material transport. Then, the conveying mechanism 6 starts to work. The hydraulic cylinder 62 in the outer shell 61 drives the telescopic column 63 to extend and retract. The telescopic column 63 drives the liquid-pushing plate 64 to move up and down. During the upward movement of the liquid-pushing plate 64, the upper fixedly connected spring 66 drives the lifting column 67 to push the stator core assembly. After the lifting column 67 reaches its maximum stroke, the spring 66 installed above the liquid-pushing plate 64 begins to retract. During the upward movement of the liquid-pushing plate 64, the liquid-pushing plate 64 pushes the liquid in the inner cavity of the outer shell 61. At this time, the solenoid valve installed at the pushing mechanism 68 and the connecting pipe 69 is opened under the control of the controller 2. Subsequently, the liquid enters the inner cavity of the pushing mechanism 68 and the connecting pipe 69, thereby driving the processing structure 5 and the pushing mechanism 68 to retract synchronously. When the pushing mechanism 68 pushes the stator core assembly to the designated clamping position, the processing structure... The clamping mechanism 55 in section 5 starts working. The hydraulic cylinder 552 at the rear of the connecting block 551 drives the sliding rod 553 to extend and retract. The sliding rod 553 drives the rotating mechanism 554 to move to both sides of the stator core assembly. The pneumatic chuck 555 clamps the stator core assembly under the guidance of the sliding bar 5544. The outer surface of the rotating ring 5541 in the rotating mechanism 554 has several grooves 5542 that match the number of welded stator core assemblies, providing a reference for subsequent rotation and positioning. The sliding connection between the rotating ring 5543 and the sliding rod 553 ensures that the rotating ring 5541 rotates smoothly and is positioned. After clamping is completed, the spot welding structure 56 is activated. The hydraulic cylinder 563 drives the mating mechanism 564 to move downward. The sliding rod 5641 drives the connecting plate 564 to move downward. 5642 and the toggle block 5643 move down synchronously, and the connecting plate 5642 performs spot welding on the stator core assembly. At this time, the hinge at the bottom of the toggle block 5643 presses the groove 5542 of the rotating ring 5541, causing the rotating ring 5541 to rotate, realizing multi-point welding positioning of the stator core assembly. After the spot welding is completed, the hydraulic cylinder 563 drives the cooperating mechanism 564 to rise, and the hinge deforms to prevent the rotating ring 5541 from reversing, ensuring that the spot welding positioning is correct each time. At the same time, the sliding bar 52 at the upper end of the fixed block 51 provides a guide for the sliding block 54. The electric telescopic rod 53 can drive the sliding block 54 to drive the clamping mechanism 55 to move laterally, improving the adaptability of the equipment to stator core assemblies of different specifications and expanding the application range of the equipment.Throughout the entire process, all mechanisms work in close coordination. Controller 2 regulates the operating rhythm and motion precision of each component; transport mechanism 3 and unloading mechanism 4 ensure smooth and efficient material conveying; conveying mechanism 6 improves loading accuracy and material protection; and processing structure 5 achieves multiple advantages including stable clamping, spot welding, and rotary positioning, effectively improving the spot welding efficiency and welding quality of the stator core assembly, reducing manual intervention costs. Furthermore, the structural design of each component balances stability and flexibility, ensuring long-term stable operation, reducing equipment failure rates, and extending equipment lifespan. Simultaneously, the automated operation process effectively avoids human error, improves product consistency, and meets the needs of large-scale production.

[0046] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A rotating device for spot welding stator core assemblies, comprising a worktable (1), characterized in that: A controller (2) is fixedly connected to the middle of the upper end of the workbench (1), a conveying mechanism (6) is fixedly connected to the left side of the controller (2), a transport mechanism (3) is fixedly connected to the upper end of the workbench (1), a feeding mechanism (4) is fixedly connected to the upper end of the transport mechanism (3), and a processing structure (5) is fixedly connected to one side of the conveying mechanism (6). The processing structure (5) includes a fixed block (51), a sliding block (54) is fixedly connected to the upper end of the fixed block (51), a clamping mechanism (55) is fixedly connected to the upper end of the sliding block (54), and a spot welding structure (56) is fixedly connected to the upper end of the clamping mechanism (55).

2. The rotating device for spot welding stator core assembly according to claim 1, characterized in that: The transport mechanism (3) includes four support legs (31). Each of the four support legs (31) is fixedly connected to a connecting frame (32) on one side close to each other. A motor (33) is fixedly connected to the right side of the connecting frame (32) at the rear. Two rotating rods (34) are rotatably connected to the two connecting frames (32) on one side close to each other. A conveyor belt (35) is fixedly connected to the outer surface of each of the two rotating rods (34). A transmission wheel (36) is fixedly connected to the rear of the left rotating rod (34). A feeding mechanism (4) is wound around the outer surface of the transmission wheel (36).

3. The rotating device for spot welding stator core assembly according to claim 2, characterized in that: The feeding mechanism (4) includes two connecting legs (41), both connecting legs (41) are fixedly connected to two connecting frames (32), and the upper ends of the two connecting legs (41) are fixedly connected to a housing (42). The inner cavity of the housing (42) is rotatably connected to a feeding wheel (44), and a transmission belt (43) is wound around the rear of the feeding wheel (44). The other side of the transmission belt (43) is wound around the transmission wheel (36).

4. The rotating device for spot welding stator core assembly according to claim 1, characterized in that: The conveying mechanism (6) includes a second outer shell (61), a third hydraulic cylinder (62) is fixedly connected to the inner cavity of the second outer shell (61), a telescopic column (63) is slidably connected to the output end of the third hydraulic cylinder (62), a pusher plate (64) is fixedly connected to the upper end of the telescopic column (63), a first spring (66) is fixedly connected to the upper end of the pusher plate (64), a lifting column (67) is fixedly connected to the upper end of the first spring (66), a fixing ring (65) is slidably connected to the bottom of the lifting column (67), a pushing mechanism (68) is fixedly connected to the front of the outer surface of the second outer shell (61), a connecting pipe (69) is fixedly connected to the rear of the outer surface of the second outer shell (61), and a solenoid valve is provided at the connection between the outer surface of the second outer shell (61) and the pushing mechanism (68) and the connecting pipe (69).

5. A rotating device for spot welding stator core assembly according to claim 4, characterized in that: The pushing mechanism (68) includes a connecting pipe (681), the other side of which is fixedly connected to the front of the outer surface of the outer shell (61), and a fixed shell (682) is fixedly connected to the other side of the connecting pipe (681). An I-shaped sliding plate (683) is slidably connected to the inner cavity of the fixed shell (682). A spring (684) is fixedly connected to the rear of the I-shaped sliding plate (683), and the other side of the spring (684) is fixedly connected to the rear of the fixed shell (682). The I-shaped sliding plate (683) is used to push the stator core assembly.

6. The rotating device for spot welding stator core assembly according to claim 1, characterized in that: The fixed block (51) is fixedly connected to the upper end of the workbench (1). Two sliding bars (52) are fixedly connected to the upper end of the fixed block (51). An electric telescopic rod (53) is fixedly connected to the side of the two sliding bars (52) that are close to each other. The spot welding structure (56) is used to spot weld the stator core assembly.

7. A rotating device for spot welding stator core assembly according to claim 6, characterized in that: The clamping mechanism (55) includes a connecting block (551), a hydraulic cylinder (552) is fixedly connected to the rear of the connecting block (551), a sliding rod (553) is fixedly connected to the output end of the hydraulic cylinder (552), a rotating mechanism (554) is rotatably connected to the front of the sliding rod (553), and a pneumatic chuck (555) is slidably connected to the inner surface of the rotating mechanism (554). The pneumatic chuck (555) is used to clamp the stator core assembly.

8. A rotating device for spot welding stator core assembly according to claim 7, characterized in that: The rotating mechanism (554) includes a rotating ring (5541). The outer surface of the rotating ring (5541) is provided with a plurality of sliding grooves (5542). The plurality of sliding grooves (5542) are adapted to the number of welding of the stator core assembly. Four sliding bars (5544) are fixedly connected to the inner surface of the rotating ring (5541). The four sliding bars (5544) are slidably connected to the outer surface of the pneumatic chuck (555). A rotating ring (5543) is fixedly connected to the rear of the rotating ring (5541). The rotating ring (5543) is slidably connected to the front of the sliding rod (553).

9. A rotating device for spot welding stator core assembly according to claim 6, characterized in that: The spot welding structure (56) includes a fixing plate (561), a connecting plate (562) is fixedly connected to the upper part of the fixing plate (561), a hydraulic cylinder (563) is fixedly connected to the upper end of the connecting plate (562), and a mating mechanism (564) is slidably connected to the bottom of the hydraulic cylinder (563).

10. A rotating device for spot welding stator core assembly according to claim 9, characterized in that: The cooperating mechanism (564) includes a sliding rod two (5641), the upper end of which is slidably connected to a hydraulic cylinder two (563). A connecting plate two (5642) is fixedly connected to the bottom of the sliding rod two (5641), and a toggle block (5643) is fixedly connected to the bottom of the connecting plate two (5642). A hinge is fixedly connected to the bottom of the toggle block (5643). When the connecting plate two (5642) performs electric welding on the stator core assembly, the connecting plate two (5642) drives the toggle block (5643) to move downward. At this time, the hinge will not rotate, and the hinge will press the slide groove (5542), causing the slide groove (5542) to rotate. When the hinge is lifted by the actuating block (5643), the hinge will deform to prevent the rotating ring (5541) from rotating.

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