Automatic device for welding and bending round of stator

Abstract

The application provides a stator welding and bending circle burning and welding automatic device, and belongs to the technical field of stator welding. The device comprises a support plate, a plurality of circumferentially arranged hydraulic cylinders fixedly connected to the top of the support plate, a pressing block fixedly connected to the telescopic end of the hydraulic cylinder, an axis arranged between the plurality of hydraulic cylinders, and a stator workpiece and a push sleeve sleeved on the axis. The device further comprises a welding and cooling assembly arranged between any two of the hydraulic cylinders, which is used for welding and heat dissipation of the stator; and a heat dissipation and air exchange assembly arranged below the welding and cooling assembly, which is used for heat dissipation and automatic air reversing of the axis. When welding, the connecting frame moves to drive the push rod to extrude the sliding rod, so that the air exchange mechanism is switched to the stator cooling mode, the welding stress is reduced, and the smoke and dust are discharged. After the welding is completed, the air exchange mechanism is automatically switched to the axis heat dissipation mode, so that the stability of the device during continuous production is ensured.

Description

Technical Field

[0001] This invention relates to the field of stator welding technology, and more specifically, to an automatic device for stator welding bending and welding. Background Technology

[0002] With the rapid development of the manufacturing industry towards automation and intelligence, automated welding production lines are gradually replacing traditional manual welding operations in stator production, significantly improving production efficiency and product quality stability. Automated welding production lines, through the coordinated operation of robotic arms, specialized positioning mechanisms, and welding equipment, can achieve automatic loading, positioning, bending, welding, and unloading of stator workpieces throughout the entire process, effectively reducing errors caused by manual operation.

[0003] In the continuous production process of stator automated welding and bending, the welding process generates a large amount of welding fumes. To suppress the spread of fumes, the existing technology generally adopts a fully enclosed sealing method that completely covers the entire automated equipment, combined with a negative pressure suction device for fume collection. However, this method has technical drawbacks. After the sealing cover completely encloses the equipment, the large amount of heat generated during the welding process cannot be dissipated in time and easily accumulates near the welding station. Under long-term continuous production, the continuous temperature accumulation will cause the temperature of the shaft used for stator positioning to be too high, resulting in dimensional deviations of the shaft due to thermal expansion, affecting the positioning accuracy of the stator inner circle. At the same time, when the high-temperature shaft is in contact with the stator inner circle, the stator as a whole will heat up too quickly, which can easily damage the insulating plastic and enameled wire on the stator.

[0004] How to invent an automatic stator welding bending and welding device to improve these problems has become an urgent problem to be solved by those skilled in the art. Summary of the Invention

[0005] To overcome the above deficiencies, the present invention provides an automatic stator welding bending and welding device, which aims to improve the problems mentioned in the background.

[0006] This invention is implemented as follows: This invention provides an automatic stator welding bending and welding device, comprising a support plate, a plurality of circumferentially arranged hydraulic cylinders fixedly connected to the top of the support plate, pressure blocks fixedly connected to the telescopic ends of the hydraulic cylinders, a shaft disposed between the plurality of hydraulic cylinders, a stator workpiece and a push sleeve sleeved on the shaft, the stator workpiece being located above the push sleeve, the shaft being fixedly connected to the support plate, a push plate fixedly connected to the outer wall of the push sleeve, the push plate being fixedly connected to the piston rod of an external cylinder, and further comprising: a welding cooling assembly disposed between two of the hydraulic cylinders, the welding cooling assembly being used for welding and heat dissipation of the stator; and a heat dissipation and ventilation assembly disposed below the welding cooling assembly, the heat dissipation and ventilation assembly being used for heat dissipation of the shaft and automatic gas reversal.

[0007] Preferably, the welding cooling assembly includes a connecting frame, which is connected to an external cross slide module. A welding torch is fixedly connected to the connecting frame, and a push rod is fixedly connected to the bottom of the connecting frame. Multiple support rods are fixedly connected to the connecting block of the welding torch. Support springs are sleeved on the support rods, and receiving housings are slidably connected to the multiple support rods. Sealing housings are slidably provided at the ends of the receiving housings.

[0008] Preferably, side plates are fixedly connected to both sides of the sealing housing, and a slider is fixedly connected to the end of the receiving housing. The receiving housing is slidably connected to the side plates via the slider. A return spring is fixedly connected to the slider. The top end of the return spring is fixedly connected to the inner side wall of the groove of the side plate. A boss is fixedly connected to the end of the sealing housing. Telescopic guard plate assemblies are fixedly connected to the upper and lower ends of the end of the receiving housing. The ends of the two telescopic guard plate assemblies away from the receiving housing are fixedly connected to the upper and lower ends of the sealing housing, respectively.

[0009] Preferably, a regulating valve is fixedly connected to the end side wall of the housing near the support rod, and the housing is connected to a negative pressure port for smoke and dust through the regulating valve.

[0010] Preferably, the end of the sealing housing is rectangular, and the end of the sealing housing is provided with an arc-shaped surface that conforms to the outer circle contour of the stator workpiece. Both sides of the sealing housing are provided with elongated cooling air inlets, and both sides of the sealing housing are connected to the bottom of the cooling negative pressure port. The two cooling negative pressure ports are connected by a T-connector.

[0011] Preferably, the heat dissipation and ventilation assembly includes multiple heat dissipation channels circumferentially formed on the side wall of the shaft, the heat dissipation channels passing through the top of the shaft, the bottom of the multiple heat dissipation channels being connected, a heat dissipation negative pressure port being fixedly connected to the bottom side wall of the shaft, the heat dissipation negative pressure port being connected to the heat dissipation channels, and multiple stator cooling channels being formed inside the push sleeve.

[0012] Preferably, the stator cooling air channels are evenly distributed along both sides of the stator weld. A cooling negative pressure nozzle is fixedly connected to the outer wall of the push sleeve. The cooling negative pressure nozzle is connected to multiple stator cooling air channels. Multiple sealing nozzles are fixedly connected to the top of the push sleeve. The number of sealing nozzles is the same as the number of stator cooling air channels. One sealing nozzle in the middle is located in the vertical hole between the stator coils where the weld is located.

[0013] Preferably, the heat dissipation and ventilation assembly further includes a ventilation valve body fixedly connected to the support plate. The ventilation valve body has normally open cooling ports and stator cooling ports on both sides. A negative pressure pipe is connected to the bottom of the ventilation valve body and is connected to an external negative pressure mechanism. A ventilation pipe is slidably connected to the inner wall of the ventilation valve body, and a slide rod is fixedly connected to the end of the ventilation pipe.

[0014] Preferably, an air exchange spring is fixedly connected to the inner wall of the end of the air exchange pipe, and the end of the air exchange spring abuts against the inner wall of the end of the air exchange valve body. The air exchange pipe is provided with a slot, a first through hole and a second through hole. The axial positions of the first through hole and the second through hole are staggered. The normally open cooling port corresponds to the position of the second through hole. Ventilation holes are provided on the air exchange pipe at the corresponding positions of the first through hole and the second through hole.

[0015] Preferably, the normally open cooling port is connected to the heat dissipation negative pressure port, and the stator cooling port is connected to the cooling negative pressure port, the cooling negative pressure nozzle, and the dust negative pressure port through a four-way pipe.

[0016] The beneficial effects of this invention are: 1. This device forms a relatively sealed chamber around the welding torch head by cooperating with the sealing shell and the receiving shell in the welding cooling assembly, thus sealing off the source of welding fumes and preventing fumes from spreading arbitrarily into the equipment and the surrounding environment.

[0017] 2. This device achieves automatic switching between the welding process and post-weld heat dissipation. During welding, the moving connecting frame drives the push rod to press the slide rod, switching the ventilation mechanism to stator cooling mode. This ensures simultaneous fume extraction and stator internal and external cooling, reducing welding stress and removing fumes. After welding, the ventilation spring resets, and the ventilation mechanism automatically switches to shaft cooling mode for continuous cooling of the shaft. This prevents excessive residual temperature in the stator when the high-temperature shaft contacts the stator's inner circle, protecting the insulating plastic and enameled wire on the stator and ensuring the stability of the equipment during continuous production. The automatic reversing design not only simplifies the operation process but also achieves rational energy utilization, improving the automation level and production efficiency of the equipment. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a three-dimensional structural schematic diagram of an automatic stator welding bending and welding device provided by an embodiment of the present invention; Figure 2 This is a schematic diagram of the pusher structure of an automatic stator welding bending and welding device provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of the boss position of an automatic stator welding bending and rounding welding device provided by an embodiment of the present invention; Figure 4 This is a schematic diagram of the housing structure of an automatic stator welding bending and rounding welding device provided by an embodiment of the present invention; Figure 5 This is a schematic diagram of the internal structure of the housing of an automatic stator welding bending and rounding welding device provided in an embodiment of the present invention; Figure 6 This is a schematic diagram of the sealing housing structure of an automatic stator welding bending and rounding welding device provided by an embodiment of the present invention; Figure 7 This is a schematic diagram of the shaft structure of an automatic stator welding bending and welding device provided by an embodiment of the present invention; Figure 8 This is a schematic diagram of the ventilation valve body structure of an automatic stator welding bending and rounding welding device provided by an embodiment of the present invention; Figure 9 This is a schematic diagram of the internal structure of the ventilation valve body of an automatic stator welding bending and rounding welding device provided in an embodiment of the present invention. Figure 10 This is a schematic diagram of the air exchange pipe position of an automatic stator welding bending and rounding welding device provided in an embodiment of the present invention; Figure 11 This is a schematic diagram of the ventilation pipe structure of an automatic stator welding bending and welding device provided by an embodiment of the present invention.

[0020] In the diagram: 1. Support plate; 2. Hydraulic cylinder; 3. Pressure block; 4. Shaft; 5. Stator workpiece; 6. Push sleeve; 7. Push plate; 11. Connecting frame; 12. Push rod; 13. Welding torch; 14. Support rod; 15. Housing; 16. Sealing housing; 17. Side plate; 18. Slider; 19. Return spring; 20. Boss; 22. Telescopic guard plate assembly; 23. Dust negative pressure port; 24. Regulating valve; 25. Cooling... 26. Air inlet; 31. Cooling negative pressure port; 32. Heat dissipation air passage; 33. Heat dissipation negative pressure port; 34. Stator cooling air passage; 35. Cooling negative pressure nozzle; 46. Sealing nozzle; 47. Ventilation valve body; 48. Normally open cooling port; 49. Stator cooling port; 40. Negative pressure pipe; 41. Ventilation pipe; 42. Ventilation spring; 43. Slot; 44. First through hole; 55. Second through hole; 60. Slide rod; 71. Vent hole. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Example, refer to Figures 1-2 An automatic stator welding bending and welding device includes a support plate 1. Multiple circumferentially arranged hydraulic cylinders 2 are fixedly connected to the top of the support plate 1. Pressure blocks 3 are fixedly connected to the telescopic ends of the hydraulic cylinders 2. A shaft 4 is arranged between the multiple hydraulic cylinders 2. A stator workpiece 5 and a push sleeve 6 are sleeved on the shaft 4, with the stator workpiece 5 located above the push sleeve 6. The shaft 4 is fixedly connected to the support plate 1. A push plate 7 is fixedly connected to the outer wall of the push sleeve 6 and is fixedly connected to the piston rod of an external cylinder. The device also includes: a welding cooling assembly, disposed between two of the hydraulic cylinders 2, used for welding and heat dissipation of the stator; and a heat dissipation and ventilation assembly, disposed below the welding cooling assembly, used for heat dissipation of the shaft 4 and automatic gas reversal.

[0023] Reference Figures 3-6 The welding cooling assembly includes a connecting frame 11, which is connected to an external cross slide module. The cross slide module is used to drive the connecting frame 11 to move in the horizontal and vertical directions to adjust the position of the welding torch 13. The welding torch 13 is fixedly connected to the connecting frame 11, and a push rod 12 is fixedly connected to the bottom of the connecting frame 11. Multiple support rods 14 are fixedly connected to the connecting block of the welding torch 13. Support springs are sleeved on the support rods 14. A housing 15 is slidably connected to the multiple support rods 14, and a sealing housing 16 is slidably provided at the end of the housing 15.

[0024] Side plates 17 are fixedly connected to both sides of the sealing housing 16. A slider 18 is fixedly connected to the end of the receiving housing 15. The receiving housing 15 is slidably connected to the side plates 17 through the slider 18. A return spring 19 is fixedly connected to the slider 18. The top of the return spring 19 is fixedly connected to the inner side wall of the groove of the side plate 17. A boss 20 is fixedly connected to the end of the sealing housing 16. Telescopic guard plate assemblies 22 are fixedly connected to the upper and lower ends of the receiving housing 15. The ends of the two telescopic guard plate assemblies 22 away from the receiving housing 15 are fixedly connected to the upper and lower ends of the sealing housing 16.

[0025] It should be noted that: the two sides of the telescopic guard plate assembly 22 are sealed with the side plate 17. Through the seal between the telescopic guard plate assembly 22 and the side plate 17, when the housing 15 slides on the side plate 17, the combination of the sealing housing 16 and the housing 15 is still in a relatively sealed state. When the end of the sealing housing 16 with the arc-shaped opening is in contact with the outer circle of the stator workpiece 5, the housing 15 and the sealing housing 16 form a position to wrap the welding torch 13 head, preventing the welding fumes from spreading arbitrarily. The inner walls of the housing 15 and the sealing housing 16 are heat-insulated to reduce the adverse effects on nearby components caused by high temperature.

[0026] A regulating valve 24 is fixedly connected to the end side wall of the housing 15 near the support rod 14, and the housing 15 is connected to a smoke and dust negative pressure port 23 through the regulating valve 24.

[0027] It should be noted that the regulating valve 24 uses a needle valve regulation method. When the fume negative pressure port 23 is connected to negative pressure, the flue gas enters from the housing 15, passes through the regulating valve 24 into the fume negative pressure port 23, and is then led out to the outside. The gas flow rate of the fume negative pressure port 23 should be less than the shielding gas flow rate of the welding torch 13, so that a slight positive pressure is formed in the chambers of the housing 15 and the sealing housing 16. This ensures that the flue gas tends to flow out from the fume negative pressure port 23, and because the flow pattern of the shielding gas is not disrupted, the protection of the molten pool by the shielding gas is not affected. A small amount of excess shielding gas and fumes escape from the escaping holes reserved at the upper and lower positions of the sealing housing 16 and are adsorbed by the cooling air inlet 25. This timely removal of fumes prevents escape and reduces the impact on the overall moving parts of the machine.

[0028] The end of the sealing housing 16 is rectangular and has an arc-shaped surface that fits the outer contour of the stator workpiece 5. Both sides of the sealing housing 16 have long strip-shaped cooling air inlets 25. Both sides of the sealing housing 16 have cooling negative pressure ports 26 at the bottom. The two cooling negative pressure ports 26 are connected by a three-way pipe.

[0029] It should be noted that the side walls on both sides of the cooling air inlet 25, wherein the inner side wall is in contact with the outer wall of the stator workpiece 5, and the outer side wall maintains an opening and closing gap with the stator workpiece 5, so that external gas can flow into the cooling air inlet 25.

[0030] The stator bar is first pre-bent at the front station, and then the robot arm puts the pre-bent stator workpiece 5 onto the shaft 4 from the front station. The welding position is aligned with the position of the welding gun 13. Then, oil is supplied to the hydraulic cylinder 2 that is far away from the weld seam, and the pressure block 3 is pushed to press the stator workpiece 5 onto the shaft 4, ensuring that the stator workpiece 5 that is far away from the weld seam is first fitted. Then, the other hydraulic cylinders 2 are controlled in sequence to press the stator workpiece 5, thus completing the positioning of the stator workpiece 5.

[0031] The welding torch 13 is controlled by an external cross slide module to move towards the stator workpiece 5, and then controlled to move downwards to weld the seam. During this process, when the connecting frame 11 moves towards the stator workpiece 5, the end of the sealing housing 16 first contacts the outer wall of the stator workpiece 5. As the welding torch 13 continues to move, it compresses the spring on the support rod 14, making the sealing housing 16 fit more tightly against the outer wall of the stator workpiece 5. At this time, the boss 20 is located above the stator workpiece 5. During the welding process as the welding torch 13 moves downwards, because the boss 20 is above the stator workpiece 5, the sealing housing 16 is hung on the stator workpiece 5 through the boss 20 as the welding torch 13 moves downwards, preventing the sealing housing 16 from moving further downwards. The downward movement of the receiving housing 15 causes the telescopic guard plate assembly 22 to extend and retract accordingly, maintaining the seal between the receiving housing 15 and the sealing housing 16. The return spring 19 is also stretched. After the welding is completed, the welding torch 13 returns to its original position and moves upwards, the return spring 19 retracts, and the welding torch 13 is then controlled to move away from the stator workpiece 5, completing the welding process.

[0032] The sealed housing 16 serves as a chamber formed by the housing to prevent the spread of smoke and dust. During welding, the gas inside the sealed housing 16 and the housing 15 is drawn in through the smoke and dust negative pressure port 23, so that the smoke and dust enter the smoke and dust negative pressure port 23 and are drawn into the external negative pressure assembly for treatment, preventing the spread of smoke and dust from affecting the moving parts of the machine in the enclosed space.

[0033] Reference Figures 7-11 The heat dissipation and ventilation component includes multiple heat dissipation channels 31 circumferentially opened on the side wall of the shaft 4. The heat dissipation channels 31 pass through the top of the shaft 4 and the bottom of the multiple heat dissipation channels 31 are connected. A heat dissipation negative pressure port 32 is fixedly connected to the bottom side wall of the shaft 4. The heat dissipation negative pressure port 32 is connected to the heat dissipation channels 31. Multiple stator cooling channels 33 are opened inside the push sleeve 6.

[0034] The stator cooling air channels 33 are evenly distributed along both sides of the stator weld. The outer wall of the push sleeve 6 is fixedly connected with a cooling negative pressure nozzle 34. The cooling negative pressure nozzle 34 is connected to multiple stator cooling air channels 33. Multiple sealing nozzles 35 are fixedly connected to the top of the push sleeve 6. The number of sealing nozzles 35 is the same as that of the stator cooling air channels 33. One sealing nozzle 35 in the middle is located in the vertical hole between the stator coils where the weld is located.

[0035] The heat dissipation and ventilation assembly also includes a ventilation valve body 41 fixedly connected to the support plate 1. The ventilation valve body 41 has normally open cooling ports 42 and stator cooling ports 43 on both sides. A negative pressure pipe 44 is connected to the bottom of the ventilation valve body 41 and is connected to an external negative pressure mechanism. A ventilation pipe 45 is slidably connected to the inner wall of the ventilation valve body 41. A slide rod 50 is fixedly connected to the end of the ventilation pipe 45. The slide rod 50 has a non-circular structure. Through the cooperation between the non-circular structure of the slide rod 50 and the ventilation valve body 41, the rotational freedom of the ventilation pipe 45 can be effectively restricted, preventing the ventilation pipe 45 from rotating and deviating during the sliding process.

[0036] An air exchange spring 46 is fixedly connected to the inner wall of the end of the air exchange pipe 45. The end of the air exchange spring 46 abuts against the inner wall of the end of the air exchange valve body 41. The air exchange pipe 45 has a slot 47, a first through hole 48, and a second through hole 49. The axial positions of the first through hole 48 and the second through hole 49 are staggered. The normally open cooling port 42 corresponds to the position of the second through hole 49. Ventilation holes 51 are provided on the air exchange pipe 45 at the corresponding positions of the first through hole 48 and the second through hole 49. The ventilation holes 51 are designed as small holes to maintain a negative pressure state in the air passage, thereby capturing a small amount of smoke and dust in the air. The normally open cooling port 42 is connected to the heat dissipation negative pressure port 32. The stator cooling port 43 is connected to the cooling negative pressure port 26, the cooling negative pressure nozzle 34, and the smoke and dust negative pressure port 23 through a four-way pipe.

[0037] It should be noted that during the process of the connecting frame 11 moving towards the stator workpiece 5, the slide rod 50 is squeezed by the push rod 12, and the negative pressure at the negative pressure pipe 44 changes from the state of normally open cooling port 42 connecting to negative pressure pipe 44 to the state of stator cooling port 43 connecting to negative pressure pipe 44, and the air spring 46 is compressed and stored. Since the dust inlet 23, cooling nozzle 34, and cooling nozzle 26 are located in the same negative pressure pipeline, when the negative pressure pipeline draws in air, the gas also enters the cooling nozzle 26 through the two cooling inlets 25. During this process, the external airflow will enter the cooling inlet 25 along the tangential direction of the outer wall of the stator workpiece 5. Since the two cooling inlets 25 are located on both sides of the weld, the airflow will cool the outer wall of the stator workpiece 5 that generates heat due to welding, reducing the heat transfer range from a position closer to the weld, thereby reducing stress generation in subsequent cooling. The airflow entering the cooling inlet 25 will also draw in the dust escaping from the vent hole of the sealed housing 16. This position is close to the welding position, so that the dust is drawn away before it diffuses. Compared with the existing technology of covering the entire automated equipment with a protective cover and using the whole-body suction method inside the cover, the impact of dust on moving parts is reduced. When the stator workpiece 5 is placed on the shaft 4, multiple sealing nozzles 35 are inserted into the holes between the coils on both sides of the weld, forming a relatively sealed vertical channel between the coils. Under the suction of the same negative pressure pipeline, gas enters from the channel where the weld is located and the channels on both sides of the weld. As the airflow passes through these channels, it carries away the heat from the inner wall where the stator coils are located. Combined with the cooling effect of the external airflow of the stator workpiece 5, the stator workpiece 5 is cooled simultaneously inside and out, more quickly suppressing the transfer of heat to other locations. Through the same negative pressure air path, the stator weld is cooled first from the inside and outside, while a relatively small negative pressure is introduced from the dust negative pressure port 23 to draw out the dust, preventing stress deformation and dust diffusion caused by heat transfer.

[0038] After welding is completed, the welding torch 13 moves away from the stator workpiece 5, the air spring 46 is released, and the state of the stator cooling port 43 connected to the negative pressure pipe 44 changes to the state of the normally open cooling port 42 connected to the negative pressure pipe 44. Since the normally open cooling port 42 is connected to the heat dissipation negative pressure port 32, due to the influence of the negative pressure of the negative pressure pipe 44, the airflow flows from the multiple heat dissipation channels 31 on the shaft 4 to the heat dissipation negative pressure port 32. When the airflow flows through the heat dissipation channels 31, it carries away the heat transferred from the stator welding to the shaft 4. The continuous airflow reduces the heat of the shaft 4, preventing the shaft 4 from heating and expanding due to temperature accumulation during continuous production, which would affect the accuracy of the inner circle of the stator; it also prevents the overall temperature of the stator from rising too quickly when the shaft 4 is in close contact with the inner circle of the stator, which would affect the insulating plastic and enameled wire on the stator, thereby improving the quality of the stator in continuous automated production.

[0039] After welding is completed, the external cylinder drives the push plate 7 to move the push sleeve 6 upward as a whole. The push sleeve 6 moves upward along the axis 4 and lifts the stator workpiece 5 from below, so that the stator workpiece 5 and the surface of the axis 4 are separated, releasing the binding between the stator workpiece 5 and the axis 4, making it easier for the subsequent clamping mechanism to smoothly grasp the stator workpiece 5 and realize the rapid separation of the stator workpiece.

[0040] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the invention by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the invention should be included within the scope of protection of the invention.

Claims

1. An automatic stator welding bending and welding device, comprising a support plate (1), wherein a plurality of circumferentially arranged hydraulic cylinders (2) are fixedly connected to the top of the support plate (1), and pressure blocks (3) are fixedly connected to the telescopic ends of the hydraulic cylinders (2), and a shaft (4) is arranged between the plurality of hydraulic cylinders (2), wherein a stator workpiece (5) and a push sleeve (6) are sleeved on the shaft (4), the stator workpiece (5) is located above the push sleeve (6), the shaft (4) is fixedly connected to the support plate (1), and a push plate (7) is fixedly connected to the outer wall of the push sleeve (6), and the push plate (7) is fixedly connected to the piston rod of an external cylinder, characterized in that, Also includes: A welding cooling assembly is disposed between two hydraulic cylinders (2) and is used for welding and heat dissipation of the stator; A heat dissipation and ventilation component is provided below the welding cooling component. The heat dissipation and ventilation component is used for heat dissipation and automatic gas reversal of the shaft (4).

2. The automatic stator welding bending and welding device according to claim 1, characterized in that, The welding cooling assembly includes a connecting frame (11), which is connected to an external cross slide module. A welding torch (13) is fixedly connected to the connecting frame (11), and a push rod (12) is fixedly connected to the bottom of the connecting frame (11). Multiple support rods (14) are fixedly connected to the connecting block of the welding torch (13). A support spring is sleeved on the support rod (14), and a housing (15) is slidably connected to the multiple support rods (14). A sealing housing (16) is slidably provided at the end of the housing (15).

3. The automatic stator welding bending and welding device according to claim 2, characterized in that, Side plates (17) are fixedly connected to both sides of the sealing housing (16). A slider (18) is fixedly connected to the end of the receiving housing (15). The receiving housing (15) is slidably connected to the side plate (17) through the slider (18). A return spring (19) is fixedly connected to the slider (18). The top of the return spring (19) is fixedly connected to the inner side wall of the groove of the side plate (17). A boss (20) is fixedly connected to the end of the sealing housing (16). Telescopic guard plate assemblies (22) are fixedly connected to the upper and lower ends of the receiving housing (15). The ends of the two telescopic guard plate assemblies (22) away from the receiving housing (15) are fixedly connected to the upper and lower ends of the sealing housing (16).

4. The automatic stator welding bending and welding device according to claim 3, characterized in that, The receiving housing (15) is fixedly connected to the end side wall near the support rod (14) with a regulating valve (24), and the receiving housing (15) is connected to a smoke and dust negative pressure port (23) through the regulating valve (24).

5. The automatic stator welding bending and welding device according to claim 3, characterized in that, The end of the sealing housing (16) is rectangular. The end of the sealing housing (16) is provided with an arc-shaped surface that fits the outer circle contour of the stator workpiece (5). Both sides of the sealing housing (16) are provided with long strip-shaped cooling air inlets (25). Both sides of the sealing housing (16) are connected to the bottom of the two sides of the sealing housing (16) with cooling negative pressure ports (26). The two cooling negative pressure ports (26) are connected by a three-way pipe.

6. The automatic stator welding bending and welding device according to claim 1, characterized in that, The heat dissipation and ventilation assembly includes multiple heat dissipation channels (31) circumferentially opened on the side wall of the shaft (4). The heat dissipation channels (31) pass through the top of the shaft (4). The bottom of the multiple heat dissipation channels (31) are connected. A heat dissipation negative pressure port (32) is fixedly connected to the bottom side wall of the shaft (4). The heat dissipation negative pressure port (32) is connected to the heat dissipation channels (31). Multiple stator cooling channels (33) are opened inside the push sleeve (6).

7. The automatic stator welding bending and welding device according to claim 6, characterized in that, The stator cooling air passages (33) are evenly distributed along both sides of the stator weld. The outer wall of the push sleeve (6) is fixedly connected with a cooling negative pressure nozzle (34). The cooling negative pressure nozzle (34) is connected to multiple stator cooling air passages (33). The top of the push sleeve (6) is fixedly connected with multiple sealing nozzles (35). The number of sealing nozzles (35) is the same as that of the stator cooling air passages (33). One sealing nozzle (35) in the middle is located in the vertical hole between the stator coils where the weld is located.

8. The automatic stator welding bending and welding device according to claim 1, characterized in that, The heat dissipation and ventilation assembly also includes a ventilation valve body (41) fixedly connected to the support plate (1). The ventilation valve body (41) has a normally open cooling port (42) and a stator cooling port (43) on both sides. A negative pressure pipe (44) is connected to the bottom of the ventilation valve body (41). The negative pressure pipe (44) is connected to an external negative pressure mechanism. A ventilation pipe (45) is slidably connected to the inner wall of the ventilation valve body (41). A slide rod (50) is fixedly connected to the end of the ventilation pipe (45).

9. The automatic stator welding bending and welding device according to claim 8, characterized in that, An air exchange spring (46) is fixedly connected to the inner wall of the end of the air exchange pipe (45). The end of the air exchange spring (46) abuts against the inner wall of the end of the air exchange valve body (41). The air exchange pipe (45) is provided with a slot (47), a first through hole (48) and a second through hole (49). The axial positions of the first through hole (48) and the second through hole (49) are staggered. The normally open cooling port (42) corresponds to the position of the second through hole (49). The air exchange pipe (45) at the corresponding positions of the first through hole (48) and the second through hole (49) is provided with a vent hole (51).

10. The automatic stator welding bending and welding device according to claim 9, characterized in that, The normally open cooling port (42) is connected to the heat dissipation negative pressure port (32), and the stator cooling port (43) is connected to the cooling negative pressure port (26), the cooling negative pressure nozzle (34) and the smoke and dust negative pressure port (23) through a four-way pipe.

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