Mechanical hand welding tool

Abstract

The application provides a mechanical hand welding tool, and relates to the technical field of machining auxiliary equipment, and has the characteristics that the welding base is in the shape of a Greek letter, two clamping pieces are symmetrically arranged at the two ends of the welding base, a telescopic shaft and a connecting shaft are arranged at the two ends of the welding base respectively, the telescopic shaft and the connecting shaft are fixedly connected with the two clamping pieces respectively, the turnover piece is arranged outside the welding base, the turnover piece is connected with the telescopic shaft and the connecting shaft, a moving support plate is slidably arranged at one end of the welding base, the moving piece is arranged in one end of the welding base and below the telescopic shaft, and the moving piece is connected with the moving support plate. The application has the advantages that the clamping distance and the clamping size are adjustable, the workpiece is automatically turned over, the efficiency and the precision of the mechanical hand welding are improved, the turning is stable, the clamping is convenient, and the application has important engineering application value.

Description

Technical Field

[0001] This invention relates to the field of auxiliary equipment for machining, and in particular to a welding fixture for a robotic arm. Background Technology

[0002] In the field of machinery manufacturing, welding is a crucial joining process. With the development of automation technology, welding robots have widely replaced manual welding operations, significantly improving production efficiency and the consistency of welding quality.

[0003] However, the efficient operation of welding robots relies on precise and reliable welding fixtures. Traditional welding fixtures have limited functions, typically only capable of simple clamping and positioning. The clamping spacing and dimensions are fixed, making them unsuitable for different workpiece specifications and resulting in poor versatility. After clamping, the workpiece cannot be smoothly rotated, creating blind spots in the robot's welding process and requiring multiple adjustments, leading to low efficiency and poor accuracy. Furthermore, the clamping movement and rotation transmissions are independent, resulting in low structural fit precision and a tendency for jamming and misalignment. The clamping operation is cumbersome, with low automation, making it difficult to coordinate with the robot in operation.

[0004] Therefore, there is an urgent need for a tooling that can flexibly adjust the welding angle and position of the workpiece to meet the needs of efficient and precise welding by robotic arms. Summary of the Invention

[0005] The purpose of this invention is to provide a robotic welding fixture that solves the problems of inconvenient adjustment, inability to flip, poor adaptability, and low degree of automation in existing welding fixtures. It provides a robotic welding fixture with adjustable clamping distance, adjustable clamping size, and automatic workpiece flipping, thereby improving the efficiency and accuracy of robotic welding.

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

[0007] A robotic welding fixture includes a welding base, a flipping component, a moving component, and two clamping components. The welding base is U-shaped, and the two clamping components are symmetrically arranged at both ends of the welding base. The clamping components are used to clamp the workpiece. A telescopic shaft and a connecting shaft are respectively provided at both ends of the welding base, and the telescopic shaft and connecting shaft are fixedly connected to the two clamping components. The flipping component is located on the outside of the welding base and is connected to the telescopic shaft and connecting shaft, used to drive the clamping components and the workpiece to flip. A movable support plate is slidably provided at one end of the welding base. The moving component is located at one end of the welding base and below the telescopic shaft, connected to the movable support plate, used to drive the movable support plate to slide. The telescopic shaft passes through the movable support plate and is fixedly connected to the clamping components.

[0008] As an improvement, the moving component includes a moving bracket, a moving screw, and a moving guide rod. The moving bracket is fixedly installed inside the lower end of the welding base. The moving screw and the moving guide rod are both installed inside the moving bracket. The lower end of the moving support plate is slidably installed inside the moving bracket. The moving screw is threadedly connected to the lower end of the moving support plate. The moving guide rod passes through the lower end of the moving support plate. A moving motor that drives the moving screw is fixedly installed on the outside of the moving bracket. Through screw transmission, precise position control of the moving support plate can be achieved, thereby adjusting the distance between the two clamping components to accommodate workpieces of different lengths.

[0009] As an improvement, the clamping component includes a clamping frame, a clamping slider, and a movable clamping plate. The clamping frame is L-shaped, and the clamping slider is slidably disposed within the clamping frame. The movable clamping plate is disposed on one side of the clamping slider and is connected to the movable clamping plate shaft. When the movable clamping plate rotates to both sides of the clamping frame, it forms a workpiece placement space. When it rotates into the clamping frame, it forms a pressing surface for the workpiece. This design allows for a larger loading space and facilitates loading and unloading. The clamping frame has symmetrical clamping grooves on both sides, and each of the two clamping grooves contains a clamping screw and a clamping guide rod. The clamping frame contains a clamping motor that drives the clamping screw. The two sides of the movable support plate are slidably engaged in the clamping grooves. The clamping screw is threadedly connected to the clamping slider, and the clamping guide rod passes through the clamping slider.

[0010] As an improvement, the telescopic shaft includes a shaft and a sleeve. The shaft is rotatably mounted inside one end of the welding base, and the sleeve is mounted inside the welding base and sleeved on the outside of the shaft. One end of the shaft is provided with a cross groove, and the inner side of the sleeve is provided with a corresponding cross key. The cross groove and the cross key are engaged. The sleeve passes through the movable support plate and is fixedly connected to the clamping frame. A limiting plate is provided on the outer side of the sleeve. The limiting plate is located on the side of the movable support plate away from the clamping member. When the movable support plate moves, it drives the sleeve to slide along the shaft axis, which also facilitates the power transmission of the flipping member.

[0011] As an improvement, the flipping component includes a drive motor and a drive shaft. The drive shaft motor is fixed below the welding base, and the drive shaft is located at the output end of the drive motor. A drive pulley is provided at the end of the drive shaft away from the drive motor. The drive motor is a synchronous dual-output shaft motor, and there are two drive shafts that rotate synchronously. A flipping pulley is provided at the end of the connecting shaft away from the clamping frame and at the end of the shaft away from the sleeve rod. The flipping pulley is located outside the welding base and directly above the drive pulley. The drive pulley and the flipping pulley are wound around a transmission belt to form a transmission connection. The dual-axis motor drives the flipping component to ensure the synchronous flipping of the clamping components on both sides, ensuring that the workpiece is subjected to uniform force during the flipping process and will not produce torsional deformation.

[0012] The beneficial effects of this invention are as follows:

[0013] 1. The movable part allows for adjustment of the distance between the two clamping parts, and the clamping parts allow for adjustment of the clamping size to accommodate workpieces of different lengths and widths;

[0014] 2. The telescopic shaft adopts a cross-meshing structure, which takes into account both axial movement and circumferential transmission, and can adapt to workpieces of different sizes and complex welding process requirements;

[0015] 3. The movable clamping plate in the clamping component adopts a flip-up design, which greatly facilitates the loading and unloading of workpieces and improves production efficiency;

[0016] 4. The flipping structure using a dual-axis motor and belt drive ensures the synchronicity of the two clamping parts and avoids displacement or deformation of the workpiece due to uneven force during the adjustment process. Attached Figure Description

[0017] Figure 1 This is a perspective view of a robotic welding fixture according to the present invention;

[0018] Figure 2 This is a front view of a robotic welding fixture according to the present invention;

[0019] Figure 3 This is a perspective view of some components of a robotic welding fixture according to the present invention;

[0020] Figure 4 This is a perspective view of the moving part of a robotic welding fixture according to the present invention;

[0021] Figure 5 This is a perspective view of the clamping component of a robotic welding fixture according to the present invention;

[0022] Figure 6 This is a perspective view of the telescopic rod of a robotic welding fixture according to the present invention.

[0023] In the diagram: 1. Welding base, 2. Flipping component, 3. Moving component, 4. Clamping component, 5. Telescopic shaft, 6. Connecting shaft, 7. Moving support plate, 21. Drive motor, 22. Drive shaft, 23. Drive pulley, 24. Flipping pulley, 25. Transmission belt, 31. Moving bracket, 32. Moving screw, 33. Moving guide rod, 34. Moving motor, 41. Clamping frame, 42. Clamping slider, 43. Movable clamping plate, 44. Clamping groove, 45. Clamping screw, 46. Clamping guide rod, 51. Shaft, 52. Sleeve rod, 53. Cross groove, 54. Limiting plate. Detailed Implementation

[0024] To make the content of this invention easier to understand, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Identical components are represented by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, while the terms "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0025] like Figures 1 to 6 As shown, the welding base includes a welding base 1, a flipping component 2, a moving component 3, and two clamping components 4. The welding base 1 is U-shaped. The two clamping components 4 are symmetrically arranged at both ends of the welding base 1 and are used to clamp the workpiece. The welding base 1 has a telescopic shaft 5 and a connecting shaft 6 respectively at both ends. The telescopic shaft 5 and the connecting shaft 6 are fixedly connected to the two clamping components 4. The flipping component 2 is located on the outside of the welding base 1 and is connected to the telescopic shaft 5 and the connecting shaft 6. It is used to drive the clamping components 4 and the workpiece to flip. A movable support plate 7 is slidably arranged at one end of the welding base 1. The moving component 3 is located at one end of the welding base 1 and below the telescopic shaft 5. The moving component 3 is connected to the movable support plate 7 and is used to drive the movable support plate 7 to slide. The telescopic shaft 5 passes through the movable support plate 7 and is fixedly connected to the clamping component 4.

[0026] like Figures 1 to 4 As shown, the moving component 3 includes a moving bracket 31, a moving screw 32, and a moving guide rod 33. The moving bracket 31 is fixedly installed inside the lower end of the welding base 1. The moving screw 32 and the moving guide rod 33 are both installed inside the moving bracket 31. The lower end of the moving support plate 7 is slidably installed inside the moving bracket 31. The moving screw 32 is threadedly connected to the lower end of the moving support plate 7. The moving guide rod 33 passes through the lower end of the moving support plate 7. The moving motor 34 that drives the moving screw 32 is fixedly installed on the outside of the moving bracket 31. Through the screw drive, the precise position control of the moving support plate 7 can be realized, thereby adjusting the distance between the two clamping components 4 to accommodate workpieces of different lengths.

[0027] like Figures 1 to 5As shown, the clamping member 4 includes a clamping frame 41, a clamping slider 42, and a movable clamping plate 43. The clamping frame 41 is L-shaped. The clamping slider 42 is slidably disposed within the clamping frame 41. The movable clamping plate 43 is disposed on one side of the clamping slider 42 and is axially connected to the movable clamping plate 43. The movable clamping plate 43 is axially connected to the clamping slider 42 via a damping shaft. When the movable clamping plate 43 rotates to both sides of the clamping frame 41, it forms a space for placing the workpiece. When it rotates into the clamping frame 41, it forms a space for placing the workpiece. The clamping surface provides a larger loading space and facilitates loading and unloading. The clamping frame 41 has symmetrical clamping grooves 44 on both sides. Each clamping groove 44 contains a clamping screw 45 and a clamping guide rod 46. The clamping frame 41 contains a clamping motor that drives the clamping screw 45. The two sides of the movable support plate 7 are slidably engaged in the clamping grooves 44. The clamping screw 45 is threadedly connected to the clamping slider 42. The clamping guide rod 46 passes through the clamping slider 42.

[0028] like Figures 1 to 6 As shown, the telescopic shaft 5 includes a shaft 51 and a sleeve 52. The shaft 51 is rotatably disposed inside one end of the welding base 1, and the sleeve 52 is disposed inside the welding base 1 and sleeved on the outside of the shaft 51. One end of the shaft 51 is provided with a cross groove 53, and the inner side of the sleeve 52 is provided with a corresponding cross key. The cross groove 53 and the cross key are engaged. The sleeve 52 passes through the movable support plate 7 and is fixedly connected to the clamping frame 41. A limiting plate 54 is provided on the outer side of the sleeve 52. The limiting plate 54 is located on the side of the movable support plate 7 away from the clamping member 4. When the movable support plate 7 moves, it drives the sleeve 52 to slide along the axial direction of the shaft 51, which also facilitates the power transmission of the flipping member 2.

[0029] like Figures 1 to 3 As shown, the flipping component 2 includes a drive motor 21 and a drive shaft 22. The drive shaft motor is fixed below the welding base 1, and the drive shaft 22 is located at the output end of the drive motor 21. A drive pulley 23 is provided at the end of the drive shaft 22 away from the drive motor 21. The drive motor 21 is a synchronous dual-output shaft motor, and there are two drive shafts 22 that rotate synchronously. A flipping pulley 24 is provided at the end of the connecting shaft 6 away from the clamping frame 41 and the end of the shaft 51 away from the sleeve 52. The flipping pulley 24 is located on the outside of the welding base 1 and directly above the drive pulley 23. The drive pulley 23 and the flipping pulley 24 are wound around the transmission belt 25 to form a transmission connection. The dual-axis motor drives the flipping of the clamping components 4 on both sides to ensure that the workpiece is subjected to uniform force during the flipping process and will not produce torsional deformation.

[0030] During use, adjust the distance between the two clamping parts 4 according to the length of the workpiece, so that the distance between the two clamping parts 4 is slightly greater than the length of the workpiece; rotate the movable clamping plate 43 to the storage state, and place the workpiece at the bottom of the L-shaped clamping frame 41 of the two clamping parts 4 using a lifting tool or manually. Then, rotate the movable clamping plate 43 back, start the clamping motor, and the clamping motor drives the clamping screw 45 to rotate. The clamping screw 45 drives the clamping slider 42 to move, and the clamping slider 42 drives the movable clamping plate 43 to press down. The movable clamping plate 43 presses against the workpiece, and firmly fixes both ends of the workpiece.

[0031] Start the moving motor 34, which drives the moving screw 32 to rotate. The moving screw 32 drives the moving support plate 7 to move axially. The moving support plate 7 drives the sleeve rod 52 to slide along the shaft 51, adjusting the distance between the two clamping parts 4 to match the length of the workpiece.

[0032] The robotic arm performs front welding. When welding is required on the bottom of the workpiece, there is no need to stop the machine and re-clamp it. Just start the drive motor 21, and the belt drive will drive the telescopic shaft 5 and the connecting shaft 6 to rotate synchronously. The workpiece will be smoothly flipped with the clamping part 4, and the robotic arm will complete the reverse welding. The robotic arm can then continue welding.

[0033] During this process, the extension length of the sleeve 52 of the telescopic shaft 5 remains unchanged as the position of the movable support plate 7 is fixed, ensuring reliable power transmission. The clamping motor reverses to release the workpiece, and the movable clamping plate 43 is rotated to remove the welded workpiece.

[0034] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A robotic welding fixture, characterized in that: The device includes a welding base, a flipping component, a moving component, and two clamping components. The welding base is U-shaped. The two clamping components are symmetrically arranged at both ends of the welding base. A telescopic shaft and a connecting shaft are respectively provided at both ends of the welding base. The telescopic shaft and the connecting shaft are fixedly connected to the two clamping components. The flipping component is located on the outside of the welding base and is connected to the telescopic shaft and the connecting shaft to drive the clamping components to flip. A movable support plate is slidably provided at one end of the welding base. The moving component is located at one end of the welding base and below the telescopic shaft. The moving component is connected to the movable support plate to drive the movable support plate to slide. The telescopic shaft passes through the movable support plate and is fixedly connected to the clamping components.

2. The robotic welding fixture according to claim 1, characterized in that: The movable component includes a movable bracket, a movable screw, and a movable guide rod. The movable bracket is fixedly installed inside the lower end of the welding base. The movable screw and the movable guide rod are both installed inside the movable bracket. The lower end of the movable support plate is slidably installed inside the movable bracket. The movable screw is threadedly connected to the lower end of the movable support plate. The movable guide rod passes through the lower end of the movable support plate. A movable motor that drives the movable screw is fixedly installed on the outside of the movable bracket.

3. The robotic welding fixture according to claim 1, characterized in that: The clamping component includes a clamping frame, a clamping slider, and a movable clamping plate. The clamping frame is L-shaped. The clamping slider is slidably disposed within the clamping frame. The movable clamping plate is disposed on one side of the clamping slider and is connected to the movable clamping plate shaft. When the movable clamping plate rotates to both sides of the clamping frame, it forms a space for placing the workpiece. When it rotates into the clamping frame, it forms a pressing surface for the workpiece.

4. The robotic welding fixture according to claim 3, characterized in that: The clamping frame has symmetrical clamping grooves on both sides. A clamping screw and a clamping guide rod are respectively installed in the two clamping grooves. The clamping frame is equipped with a clamping motor that drives the clamping screw. The two sides of the movable support plate are slidably engaged in the clamping grooves. The clamping screw is threadedly connected to the clamping slider. The clamping guide rod passes through the clamping slider.

5. A robotic welding fixture according to claim 4 or 2, characterized in that: The telescopic shaft includes a shaft and a sleeve. The shaft is rotatably disposed inside one end of the welding base, and the sleeve is disposed inside the welding base and sleeved on the outside of the shaft. One end of the shaft is provided with a cross groove, which engages with the sleeve. The sleeve passes through the movable support plate and is fixedly connected to the clamping frame.

6. The robotic welding fixture according to claim 1, characterized in that: The flipping component includes a drive motor and a drive shaft. The drive shaft motor is fixed below the welding base, and the drive shaft is located at the output end of the drive motor. A drive pulley is provided at the end of the drive shaft away from the drive motor.

7. The robotic welding fixture according to claim 6, characterized in that: The drive motor is a synchronous dual-output shaft motor, and there are two drive shafts that rotate synchronously.

8. The robotic welding fixture according to claim 7, characterized in that: The connecting shaft is provided with a flip pulley at the end away from the clamping frame and the shaft is provided with a sleeve rod. The flip pulley is located on the outside of the welding base and directly above the drive pulley. The drive pulley and the flip pulley are wrapped around the outside of the transmission belt.

9. A robotic welding fixture according to claim 5, characterized in that: A limiting plate is provided on the outer side of the sleeve rod. The limiting plate is located on the side of the movable support plate away from the clamping member. When the movable support plate moves, it drives the sleeve rod to slide along the shaft axis.

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