Fixing device for fan welding

Abstract

The utility model relates to the technical field of fan devices, in particular to a fixing device for fan welding, which comprises a mechanical module and an electrical module, the mechanical module comprises a working table and a power device, the top of the working table is rotatably connected with two welding mechanisms and a processing frame, and the power device is arranged on the working table. The two welding mechanisms are located on the two sides of the machining frame and symmetrically distributed. The power device comprises three first motors and four second motors. The electrical module comprises a controller with a display screen and keys and a weight sensor. The height distance between the supporting plate and the two ends of the mechanical arm is changed, so that the height of the laser welding gun in the vertical direction is greatly changed, the rotating base rotates, the position of the laser welding gun in the horizontal direction is greatly changed, and then the position of the laser welding gun in the horizontal direction is changed through the universal joint in the welding process. And according to the welding track, the position of the laser welding gun is finely adjusted, and the welding precision is improved through large-amplitude and small-amplitude adjustment.

Description

Technical Field

[0001] This utility model relates to the technical field of fan equipment, and in particular to a fixing device for fan welding. Background Technology

[0002] Currently, some companies are welding wind turbines. During the processing of wind turbine impellers, grooves are left. After the blades are inserted, the impellers and blades are output by a conveyor belt. When the impellers and blades are transported to the position of the welding robot, the conveyor belt is stopped for welding. Because the conveyor belt is flexible, the impellers and blades are easily pressed down by the welding robot during welding, causing displacement and weld seam offset, resulting in low welding accuracy. Utility Model Content

[0003] To facilitate transmission without compromising welding precision, this utility model provides a fixing device for fan welding.

[0004] The present invention provides a fixing device for welding wind turbines, which adopts the following technical solution:

[0005] A fixing device for welding wind turbines includes a mechanical module and an electrical module. The mechanical module includes a worktable and a power unit. Two welding mechanisms and a processing frame are rotatably connected to the top of the worktable. The two welding mechanisms are symmetrically distributed on both sides of the processing frame. The power unit includes three motors and four motors. The electrical module includes a controller with a display screen and buttons and a weight sensor. The three motors, four motors, and weight sensor are all communicatively connected to the controller. The weight sensor is fixedly connected inside the processing frame.

[0006] By adopting the above technical solution, the conveyor belt delivers the impeller and blades to be processed to the processing frame for fixing, and then performs welding processing. After processing, the impeller and blades are thrown onto the conveyor belt from the processing frame and transported to the placement location.

[0007] Preferably, the top of the processing frame has several through holes, some of which are fitted with rubber plugs. The processing frame has an inner cavity, and a pipe is fixedly connected inside the processing frame. The through holes and the inner cavity are all connected to the inside of the pipe. A vacuum pump is fixedly connected inside the processing frame. When the vacuum pump is turned on, a negative pressure is formed through the pipe, the inner cavity, and the through holes, so that the bottom of the fan impeller is tightly attached to the top of the processing frame, firmly fixing the fan impeller. A rotating shaft is fixedly connected to the bottom of the processing frame, and the end of one of the motors is driven and connected to the bottom of the rotating shaft.

[0008] By adopting the above technical solution, the inside of the through hole is instantly turned into negative pressure by a vacuum pump, which adsorbs and processes the impeller placed thereon, thereby fixing the impeller and preventing it from shaking during the welding process.

[0009] Preferably, both welding mechanisms include a rotating base, a support plate, a robotic arm, and a laser welding gun. One end of each support plate and each robotic arm is fixedly connected to a second rotating shaft. The outer surfaces of the two second rotating shafts are rotatably connected to the top of the corresponding rotating base, and the outer surfaces of the other two second rotating shafts are rotatably connected to the other end of the corresponding support plate.

[0010] Preferably, one end of each robotic arm is fixedly connected to a universal joint, the other end of each universal joint is fixedly connected to one side of a laser welding gun, one side of each pair of motors is fixedly connected to both ends of the corresponding support plate, and the end of the output shaft of each motor is drively connected to one end of the corresponding rotating shaft.

[0011] By adopting the above technical solution, the height distance between the support plate and the two ends of the robotic arm is changed by the second motor, thereby significantly changing the vertical height of the laser welding gun. By rotating the base, the horizontal position of the laser welding gun is significantly changed. Furthermore, the universal joint allows the laser welding gun to finely adjust its position according to the welding trajectory during the welding process.

[0012] Preferably, one side of each of the three motors is fixedly connected to the inside of the workbench, and the ends of the output shafts of the other two motors are fixedly connected to the bottom of the corresponding rotating base.

[0013] By adopting the above technical solution, the motor drives the laser welding gun, universal joint and vacuum pump to rotate in the horizontal direction, thereby changing the position of the laser welding gun, impeller and blades, which facilitates the improvement of welding accuracy.

[0014] Preferably, the two laser welding guns, the two universal joints, and the vacuum pump are all communicatively connected to the controller.

[0015] By adopting the above technical solution, the laser welding gun, universal joint and vacuum pump can be controlled by the controller to weld the impeller and blades.

[0016] As the technical solution of this utility model, the hardware settings provided are only for the purpose of facilitating convenient transmission without reducing welding precision on the basis of hardware facilities. The specific method of how to achieve convenient transmission without reducing welding precision is not the technical problem to be solved or the object of protection of this utility model. At the same time, the communication methods between devices all adopt existing communication methods and are not the innovation of this application.

[0017] In summary, this utility model has the following beneficial technical effects:

[0018] 1. This device is equipped with motor one, motor two, and universal joint. Motor two drives the rotating shaft two to rotate, which changes the height distance between the support plate and the two ends of the robotic arm, thereby significantly changing the vertical height of the laser welding gun. Motor one drives the rotating base to rotate, which significantly changes the horizontal position of the laser welding gun. Furthermore, the universal joint allows the laser welding gun to fine-tune its position according to the welding trajectory during the welding process. The welding accuracy is increased through large and small adjustments.

[0019] 2. This device is equipped with a processing rack and a vacuum pump. After the impeller and blades are conveyed to the processing rack by the conveyor belt, the vacuum pump is started, which causes the top of the processing rack to adsorb the impeller and blades. After the impeller and blades are processed, the vacuum pump is turned off, and the processing rack rotates. The centrifugal force delivers the processed impeller and blades to the conveyor belt, which is easy to adapt to the conveyor belts configured in the factory. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural schematic diagram of a fixing device for welding fans according to the present invention;

[0021] Figure 2 This is a front view structural schematic diagram of a fixing device for welding fans according to this utility model;

[0022] Figure 3 This is a rear view structural schematic diagram of a fixing device for welding fans according to this utility model;

[0023] Figure 4 This is a top view of the structure of a fixing device for welding fans according to this utility model;

[0024] Figure 5 This is a top-view or left-view structural schematic diagram of a fixing device for welding fans according to this utility model.

[0025] Explanation of reference numerals in the attached drawings: 1. Workbench; 2. Processing rack; 3. Controller; 4. Motor 1; 5. Motor 2; 6. Vacuum pump; 7. Rotating shaft 1; 8. Rotating base; 9. Support plate; 10. Robotic arm; 11. Laser welding gun; 12. Universal joint; 13. Rubber plug. Detailed Implementation

[0026] The following is in conjunction with the appendix Figure 1-5 The present invention will be described in further detail below.

[0027] This utility model discloses a fixing device for welding wind turbines.

[0028] Reference Figure 1 , 2 The system includes a mechanical module and an electrical module. The mechanical module includes a workbench 1 and a power unit. Two welding mechanisms and a processing frame 2 are rotatably connected to the top of the workbench 1. The welding mechanisms utilize existing welding robot structures, allowing for the rotation and adjustment of the laser welding gun 11. Under the control of a controller 3, the laser welding gun 11 moves according to a pre-set welding path within the controller 3, thus completing the welding of the impeller and blades inside the fan. The two welding mechanisms are symmetrically distributed on both sides of the processing frame 2. The power unit includes three motors 4 and four motors 5. The electrical module includes a controller 3 (known technology) with a display screen and buttons, and a weight sensor (known technology). The first motor 4, the four second motors 5, and the weight sensor are all connected to the controller 3. The weight sensor is fixedly connected inside the processing rack 2. The controller 3 is equipped with a weld seam recognition system (known technology), a motion actuator (known technology), a welding system (known technology), and other control systems. It can perform data acquisition, quantification, and processing functions. The impeller and blades are conveyed to the processing rack 2 by the conveyor belt. After the weight sensor inside the processing rack 2 detects the weight of the impeller and blades, it transmits the data to the controller 3. The controller 3 controls the vacuum pump 6 to open. The unblocked through holes of the processing rack 2 firmly hold the impeller and blades. The controller 3 operates the welding mechanism to perform various welding actions.

[0029] Reference Figure 1 , 3 4. The top of the processing frame 2 has several through holes, some of which are fitted with rubber plugs 13. When the fan being processed and welded is small, the impeller and blades are also small. The through holes can be sealed with rubber plugs 13, thus dividing the top of the processing frame 2 into different areas to place fan impellers and blades of different sizes. This allows for simultaneous welding of fans of different sizes, or welding of multiple fans of the same size. The processing frame 2 has an internal cavity, and pipes are fixedly connected inside the processing frame 2. The through holes and the internal cavity are all connected to the inside of the pipes. A vacuum pump 6 is fixedly connected inside the processing frame 2. When the vacuum pump 6 is turned on, a negative pressure is formed through the pipes, the internal cavity, and the through holes, causing the bottom of the fan impeller to be tightly pressed against the top of the processing frame 2, firmly fixing the fan impeller and preventing it from being pushed away by the force applied by the laser welding gun 11 during processing. A rotating shaft 7 is fixedly connected to the bottom of the processing frame 2, and the end drive of one of the motors 4 is connected to the bottom of the rotating shaft 7.

[0030] When the impeller needs to be repositioned to cooperate with the laser welding gun 11 for processing, the rotating shaft 7 can be rotated by motor 4, which in turn drives the processing frame 2 to rotate, so that the impeller rotates together with the rotating frame 2 to cooperate with the laser welding gun 11 for processing. Similarly, after welding is completed, the controller 3 shuts down two motors 4, four motors 5 and vacuum pump 6, and starts the corresponding motor 4 to drive the processing frame 2 to rotate, so that the welded impeller and blades are affected by centrifugal force and delivered by the processing frame 2 to the conveyor belt for further transport to the designated placement location.

[0031] Reference Figure 1 , 2 Both welding mechanisms include a rotating base 8, a support plate 9, a robotic arm 10 (known technology), and a laser welding torch 11 (known technology). One end of each support plate 9 and each robotic arm 10 is fixedly connected to a rotating shaft 2. The outer surfaces of two rotating shafts 2 are rotatably connected to the top of their respective rotating bases 8, and the outer surfaces of the other two rotating shafts 2 are rotatably connected to the other end of their respective support plates 9. Four motors 2 drive the two support plates 9 and the two robotic arms 10 to rotate significantly in the vertical direction, thus changing the distance between the two ends of the two support plates 9 and the two ends of the two robotic arms 10. This causes a significant change in the vertical height of the laser welding torch 11, allowing for rapid adjustment of its position, facilitating the welding of fan impellers and blades. Two motors 4 drive the two rotating bases 8 to rotate, causing a significant change in the horizontal orientation of the two support plates 9 and the two robotic arms 10, further changing the horizontal position of the laser welding torch 11, which is beneficial for rapid adjustment of its position.

[0032] Reference Figure 1 , 2 3, 4. One end of each robotic arm 10 is fixedly connected to a universal joint 12 (known technology), and the other end of each universal joint 12 is fixedly connected to one side of the laser welding gun 11. The universal joint 12 allows the laser welding gun 11 to swing in any direction, and the orientation and position of the laser welding gun 11 can be adjusted within a small range, which is convenient for more precise calibration.

[0033] Reference Figure 2 , 3 Each pair of motors 25 is fixedly connected to both ends of the corresponding support plate 9 on one side. The end of the output shaft of each motor 25 is driven to one end of the corresponding rotating shaft 2. The support plate 9 is connected to the robotic arm 10, which extends the swing range of the laser welding gun 11. At the same time, the swing range driven by two motors 25 is more flexible and versatile than the swing range of one motor 25, and can adapt to various specifications and different welding trajectories.

[0034] Reference Figure 3 One side of the three motors 4 is fixedly connected to the inside of the workbench 1, and the ends of the output shafts of the other two motors 4 are fixedly connected to the bottom of the corresponding rotating base 8.

[0035] Reference Figure 1 The two laser welding guns 11, the two universal joints 12 and the vacuum pump 6 are all connected to the controller 3. The controller 3 can know the current position of the four motors 25 and the two universal joints 12 through servo feedback, so as to better control the movement trajectory of the laser welding guns 11.

[0036] The implementation principle of a fixing device for fan welding according to an embodiment of this utility model is as follows:

[0037] 1. The impeller and blades are conveyed to the processing frame 2 by the conveyor belt. The weight sensor in the processing frame 2 detects the weight of the impeller and blades and transmits it to the controller 3. The controller 3 controls the vacuum pump 6 to open. The unblocked through hole of the processing frame 2 firmly attracts the impeller and blades.

[0038] 2. At the same time, the controller controls two motors 4 and four motors 5 to drive the rotating base 8, support plate 9 and robotic arm 10 to rotate, thereby significantly changing the position of the laser welding gun 11. The controller controls the laser welding gun 11 to start welding, and then changes the position of the laser welding gun 11 slightly through the universal joint 12, so that the laser welding gun 11 moves according to the welding trajectory.

[0039] 3. After welding is completed, controller 3 shuts down two motors 4, four motors 5 and vacuum pump 6, and starts another motor 4, which drives the processing frame 2 to rotate. This causes the welded impeller and blades to be affected by centrifugal force and delivered by the processing frame 2 to the conveyor belt, which continues to transport them to the designated placement location.

[0040] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A fixing device for welding wind turbines, characterized in that: It includes a mechanical module and an electrical module. The mechanical module includes a workbench (1) and a power unit. The top of the workbench (1) is rotatably connected to two welding mechanisms and a processing frame (2). The two welding mechanisms are symmetrically distributed on both sides of the processing frame (2). The power unit includes three motors (4) and four motors (5). The electrical module includes a controller (3) with a display screen and buttons and a weight sensor. The three motors (4), four motors (5) and the weight sensor are all connected to the controller (3) in communication. The weight sensor is fixedly connected inside the processing rack (2).

2. The fixing device for fan welding according to claim 1, characterized in that: The processing frame (2) has several through holes on its top, some of which are fitted with rubber plugs (13). The processing frame (2) has an inner cavity, and a pipe is fixedly connected inside the processing frame (2). Several through holes and the inner cavity are connected to the inside of the pipe. A vacuum pump (6) is fixedly connected inside the processing frame (2). When the vacuum pump (6) is turned on, a negative pressure is formed through the pipe, the inner cavity and the through holes, so that the bottom of the fan impeller is tightly attached to the top of the processing frame (2), and the fan impeller is firmly fixed. A rotating shaft (7) is fixedly connected to the bottom of the processing frame (2), and the end of one of the motors (4) is connected to the bottom of the rotating shaft (7).

3. The fixing device for fan welding according to claim 2, characterized in that: Both welding mechanisms include a rotating base (8), a support plate (9), a robotic arm (10), and a laser welding gun (11). One end of each support plate (9) and each robotic arm (10) is fixedly connected to a rotating shaft II. The outer surfaces of two rotating shaft IIs are rotatably connected to the top of the corresponding rotating base (8), and the outer surfaces of the other two rotating shaft IIs are rotatably connected to the other end of the corresponding support plate (9).

4. A fixing device for fan welding according to claim 3, characterized in that: One end of each of the robotic arms (10) is fixedly connected to a universal joint (12), and the other end of each of the universal joints (12) is fixedly connected to one side of the laser welding gun (11).

5. A fixing device for wind turbine welding according to claim 4, characterized in that: One side of each of the two motors (5) is fixedly connected to the two ends of the corresponding support plate (9), and the end of the output shaft of each motor (5) is drivenly connected to one end of the corresponding rotating shaft.

6. A fixing device for wind turbine welding according to claim 5, characterized in that: One side of each of the three motors (4) is fixedly connected to the inside of the workbench (1), and the ends of the output shafts of the other two motors (4) are fixedly connected to the bottom of the corresponding rotating base (8).

7. A fixing device for welding wind turbines according to claim 6, characterized in that: The two laser welding guns (11), the two universal joints (12) and the vacuum pump (6) are all communicatively connected to the controller (3).

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