Rotary welding device for assembling a profile frame

Abstract

The present application relates to the technical field of profile frame welding, and specifically discloses a rotary welding device for profile frame assembly, comprising: a base, a rotating assembly, a balancing mechanism, a rotating drum, and a first moving groove; the rotating assembly is arranged in the inner cavity of the base; the balancing mechanism is arranged at the bottom end of the base and can automatically adjust the levelness of the base; the outer wall of the rotating drum is rotatably arranged at the top end of the inner cavity of the base through a bearing; and the top end of the rotating drum extends out of the inner cavity of the base. The device can flexibly adapt to square profile frames of different sizes through the design of a self-adaptive clamping mechanism, and the information exchange between the welding manipulator and the rotary welding platform is realized through a linkage cooperation mechanism, the welding coordinate is automatically positioned, manual debugging is reduced, the welding efficiency and precision are improved, the levelness of the rotary welding platform is detected in real time, the welding reference is ensured to be accurate, and welding failure or deviation caused by levelness deviation is avoided.

Description

Technical Field

[0001] This invention relates to the field of profile frame welding technology, specifically a rotary welding device for assembling profile frames. Background Technology

[0002] In many fields such as construction, machinery manufacturing and furniture manufacturing, profile frames are important structural components. Their assembly accuracy and welding quality directly affect the performance and aesthetics of the final product. Square profile frames are usually made of four profiles welded at 90 degrees to form a stable frame structure to meet the load-bearing and fixing requirements in different application scenarios.

[0003] In the assembly process of square profile frames, the rotary welding platform is a key piece of equipment and is widely used to achieve efficient and precise welding of the profile frames. The rotary welding platform can not only provide stable support to keep the profile frames in a fixed position during the welding process, but also enable the welding robot to perform all-round welding around the profile frames through the rotation function, which greatly improves welding efficiency and flexibility.

[0004] However, existing rotary welding platforms for assembling profile frames still have many shortcomings in design and application. First, existing rotary welding platforms often struggle to adaptively clamp square profile frames of different sizes. Second, the linkage and coordination between existing rotary welding platforms and welding robots are insufficient. When welding profile frames of different sizes, it is often necessary to manually reset the welding coordinates of the welding robot according to the profile size. This process is cumbersome and prone to errors, which seriously affects welding efficiency and accuracy. In addition, due to the lack of an automated size information transmission mechanism, the welding robot cannot automatically adjust the welding coordinates according to the profile size on the rotary welding platform, which further limits the level of automation of welding operations.

[0005] Secondly, existing rotary welding platforms also have shortcomings in levelness detection. During installation, the rotary welding platform is usually adjusted to a level state. However, with the extension of the usage time, due to the influence of various factors such as heat radiation, mechanical vibration, and foundation settlement, the levelness of the rotary welding platform may gradually deviate. This levelness deviation will directly affect the welding coordinates of the welding robot, leading to welding failure or welding deviation. This is because the welding robot uses the level plane of the rotary welding platform as a reference to position the welding coordinates when welding. Once the levelness of the rotary welding platform deviates, the welding position of the welding robot will also shift accordingly, thus affecting the welding quality. Summary of the Invention

[0006] The purpose of this invention is to provide a rotary welding device for assembling profile frames, in order to solve the problems in the prior art that are unable to adaptively clamp square profile frames of different sizes, lack of linkage between the rotary welding platform and the welding robot resulting in the need for manual adjustment of welding coordinates, and inability to detect and adjust the level of the rotary welding platform in real time, thus affecting the welding quality.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a rotary welding device for assembling profile frames, comprising: a base, a rotating component, a balancing mechanism, a rotating cylinder, a first moving groove, a platform, a second moving groove, a sliding groove, a first guide rod, and an adaptive clamping mechanism. The rotating component is disposed within the inner cavity of the base, and the balancing mechanism is disposed at the bottom end of the base, thereby automatically adjusting the levelness of the base. The outer wall of the rotating cylinder is rotatably disposed at the top end of the inner cavity of the base via bearings, and the top end of the rotating cylinder rotatably extends out of the inner cavity of the base. A [missing information - likely a design feature] is provided at the middle of the bottom end of the rotating cylinder. The rotating assembly is positioned at the top of the rotating component, which drives the rotating cylinder to rotate. The top of the rotating cylinder has four first moving slots equidistantly spaced from top to bottom along the circumference. The platform is located at the top of the rotating cylinder. The four corners of the top of the platform have second moving slots that extend vertically through the cylinder in the inward and outward directions. The positions of the four second moving slots correspond one-to-one with the positions of the four first moving slots. The inner cavities of the second moving slots have sliding grooves on both the left and right sides. The two ends of the first guide rod are respectively located on the inner and outer sides of the inner cavity of the sliding groove. The adaptive clamping mechanism is located in the inner cavity of the rotating cylinder.

[0008] Preferably, the adaptive clamping mechanism includes: clamping plates, sliders, connecting rods, connecting cylinders, a synchronization component, and a driving component. The clamping plates are four in number, with the outer walls of each clamping plate slidably fitted into the inner cavities of four second moving slots. The upper and lower sides of each clamping plate slidably extend from the upper and lower sides of the second moving slots, respectively. The sliders are eight in number, each disposed at the center of the left and right sides of the four clamping plates. Each slider slidably fits into the inner cavities of eight sliding slots. The sliders are slidably sleeved on the outer wall of the first guide rod. The top of the rod is rotatably mounted on the bottom of the clamping plate via a pin. The outer walls of the four connecting rods are slidably fitted into the inner cavities of the four first moving slots. The bottom ends of the four connecting rods are rotatably mounted on the four corners of the outer wall of the connecting cylinder via pins. The outer wall of the connecting cylinder has several equidistant limiting slots along the circumference from top to bottom, which communicate with its inner cavity. The synchronization component is located in the inner cavity of the platform, which can improve the synchronicity of the movement of the four clamping plates. The drive component is located at the bottom of the inner cavity of the rotating cylinder, which can drive the four clamping plates to move.

[0009] Preferably, the drive assembly includes: a third motor, a second screw, a lifting plate, limit blocks, a spring, and a clamping force adjustment assembly. The third motor is screwed to the middle of the bottom end of the inner cavity of the rotating cylinder. An encoder is provided at the output end of the third motor. The bottom end of the second screw is locked to the output end of the third motor via a coupling. The top end of the second screw is rotatably disposed at the middle of the bottom end of the platform via a bearing. The connecting cylinder is slidably sleeved on the outer wall of the second screw. The lifting plate is screwed to the outer wall of the second screw and is slidably fitted into the top end of the inner cavity of the connecting cylinder. There are several limit blocks, which are equidistantly disposed on the outer wall of the lifting plate along the circumference. The limit blocks are slidably fitted into the inner cavities of several limit slots. The spring is embedded in the inner cavity of the connecting cylinder. The bottom end of the spring is engaged with the bottom end of the inner cavity of the connecting cylinder, and the top end of the spring is engaged with the bottom end of the lifting plate. The clamping force adjustment assembly is disposed on the outer wall of the connecting cylinder.

[0010] Preferably, the clamping force adjustment assembly includes: a lifting assembly, an adjusting plate, and a push-button switch. The lifting assembly is disposed on the outer wall of the connecting cylinder, and the adjusting plate is disposed on the outer wall of the lifting assembly. The lifting assembly can drive the adjusting plate to move up and down. The inner side of the adjusting plate is slidably fitted into the inner cavity of one of the limiting grooves. The push-button switch is disposed at the top of the adjusting plate and is located in the inner cavity of the limiting groove. The position of the push-button switch corresponds to the position of the limiting block. The push-button switch is electrically connected to the third motor.

[0011] Preferably, the encoder at the output end of the third motor records the number of rotations in real time. After the adaptive clamping mechanism completes clamping, the size data of the profile frame is calculated by combining the pitch of the second screw and the preset height of the button switch in the clamping force adjustment component with the number of rotations recorded by the encoder.

[0012] Preferably, the synchronization component includes: a rotating rod, a drive groove, a drive block, and a first bevel gear. There are four rotating rods, with their ends rotatably mounted on the inner and outer sides of the inner cavities of four second moving grooves via bearings. The inner ends of the rotating rods rotatably extend into the inner cavity of the platform. The inner cavity of the clamping plate is rotatably fitted onto the outer wall of the rotating rod. Two drive grooves are formed circumferentially on the outer wall of the rotating rod. There are eight drive blocks, each located on the left and right sides of the inner cavities of the four clamping plates. The eight drive blocks are slidably fitted into the inner cavities of the eight drive grooves. The first bevel gear is fitted onto the inner side of the outer wall of the rotating rod and locked by a set screw.

[0013] Preferably, the synchronization assembly further includes: a third rotating rod, a second bevel gear, a first gear, a fourth rotating rod, and a second gear. There are four third rotating rods, each rotatably mounted at one of the four corners of the bottom of the platform's inner cavity via bearings. The positions of the four third rotating rods correspond to the positions of the four rotating rods. The second bevel gear is sleeved on the top of the outer wall of the third rotating rod and locked with a set screw. The four second bevel gears mesh with the four first bevel gears. The first gear is sleeved on the bottom of the outer wall of the third rotating rod and locked with a set screw. The bottom of the fourth rotating rod is rotatably mounted at the middle of the bottom of the platform's inner cavity via bearings. The second gear is sleeved on the outer wall of the fourth rotating rod and locked with a set screw. The second gear meshes with all four first gears.

[0014] Preferably, a tilt sensor is provided at the center of the top of the inner cavity of the platform.

[0015] Preferably, the balancing mechanism includes: lifting legs, base feet, a second motor, and a first screw. The number of lifting legs is four, and the four lifting legs are respectively disposed at the four corners of the bottom end of the base. The base feet are slidably sleeved on the outer wall of the lifting legs. The second motor is screwed to the bottom end of the inner cavity of the base feet. The second motor and the tilt sensor are electrically connected. The bottom end of the first screw is locked to the output end of the second motor through a coupling. The lifting legs are screwed to the outer wall of the first screw.

[0016] The rotary welding device for assembling profile frames proposed in this invention has the following advantages:

[0017] 1. This invention utilizes an adaptive clamping mechanism design, employing a third motor to drive the second screw to rotate, thereby moving the lifting plate and connecting cylinder up and down. This, in turn, pushes or pulls the four clamping plates to move inward or outward simultaneously via connecting rods, achieving adaptive clamping of square profile frames of different sizes. Furthermore, the spring force can be used to apply appropriate clamping force to the profile frame through the clamping plates. This process eliminates the need for frequent manual adjustments, improving clamping efficiency and accuracy.

[0018] 2. During the clamping process of the profile frame, the number of rotations at the output end of the third motor is recorded by the encoder. Combined with the height of the button switch in the clamping force adjustment component, the size of the profile frame can be automatically calculated and transmitted to the automatic welding robot to achieve automatic positioning of the welding coordinates. This mechanism significantly reduces the time and error of manual adjustment and improves welding efficiency.

[0019] 3. The present invention has a built-in tilt sensor that can monitor the levelness of the platform in real time. When a levelness deviation is detected, the system automatically starts the second motor in the balancing mechanism. Through the cooperation of the first screw and the lifting leg, the height of the base is adjusted until the platform is restored to a level state. This function effectively avoids welding failure or deviation caused by levelness deviation and improves welding quality.

[0020] 4. The present invention achieves a high degree of synchronization in the movement of the four clamping plates through the design of a synchronous component, including a rotating rod, a drive groove, a drive block, a first bevel gear, a third rotating rod, a second bevel gear, a first gear, a fourth rotating rod, and a second gear. This synchronization not only ensures uniform clamping of the profile frame and reduces the risk of profile deformation caused by uneven clamping force, but also improves the stability of clamping and reduces clamping loosening or positional displacement caused by external interference.

[0021] 5. This device, through its adaptive clamping mechanism design, can flexibly adapt to square profile frames of different sizes. The linkage mechanism enables information exchange between the welding robot and the rotating welding platform, automatically positioning the welding coordinates, reducing manual adjustments, and improving welding efficiency and accuracy. At the same time, it monitors the levelness of the rotating welding platform in real time to ensure accurate welding reference and avoid welding failures or deviations caused by levelness deviations, thus comprehensively improving welding quality and stability. Attached Figure Description

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

[0023] Figure 2 This is an exploded view of the present invention;

[0024] Figure 3 An exploded view of the balancing mechanism;

[0025] Figure 4 This is a schematic diagram of the internal structure of the rotating drum;

[0026] Figure 5 An exploded view of the adaptive clamping mechanism;

[0027] Figure 6 This is a schematic diagram of the tilt sensor structure;

[0028] Figure 7 This is a schematic diagram of the clamping plate structure;

[0029] Figure 8 This is a schematic diagram of the connecting cylinder.

[0030] Figure 9 This is an exploded view of the connecting cylinder;

[0031] Figure 10 for Figure 2 Enlarged view of point A;

[0032] Figure 11 for Figure 5 Enlarged view of point B;

[0033] Figure 12 for Figure 5 Enlarged view of point C;

[0034] Figure 13 for Figure 5 Enlarged view of point D.

[0035] In the diagram: 1. Base; 2. First rotating rod; 3. First sprocket; 4. Second rotating rod; 5. Second sprocket; 6. First motor; 7. Chain; 8. Adaptive clamping mechanism; 81. Rotating rod; 82. Drive slot; 83. Clamping plate; 84. Slider; 85. Drive block; 86. First bevel gear; 87. Third rotating rod; 88. Second bevel gear; 89. First gear; 810. Fourth rotating rod; 811. Second gear; 812. Third motor; 813. Second screw; 814. Lifting plate; 81 5. Limiting block; 816. Spring; 817. Connecting cylinder; 818. Limiting groove; 819. Second guide rod; 820. Fourth motor; 821. Third screw; 822. Adjusting plate; 823. Push-button switch; 824. Connecting rod; 9. Balancing mechanism; 91. Lifting leg; 92. Foot; 93. Second motor; 94. First screw; 95. Rubber pad; 10. Rotary drum; 11. First moving groove; 12. Platform; 13. Second moving groove; 14. Slide groove; 15. First guide rod; 16. Tilt sensor. Detailed Implementation

[0036] 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, and 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.

[0037] Please see Figures 1-13This invention provides a technical solution for a rotary welding device for assembling profile frames, comprising: a base 1, a rotating assembly, a balancing mechanism 9, a rotating cylinder 10, a first moving groove 11, a platform 12, a second moving groove 13, a sliding groove 14, a first guide rod 15, an adaptive clamping mechanism 8, and a tilt sensor 16. The rotating assembly is disposed within the inner cavity of the base 1 and drives the rotating cylinder to rotate, achieving automatic switching of the welding position. The balancing mechanism 9 is disposed at the bottom end of the base 1 and automatically adjusts the levelness of the base 1 to ensure that the platform 12 remains level during long-term use. The outer wall of the rotating cylinder 10 is rotatably disposed at the top end of the inner cavity of the base 1 via bearings, and the top end of the rotating cylinder 10 rotatably extends out of the inner cavity of the base 1. The middle part of the bottom end of the rotating cylinder 10 is disposed at the top end of the rotating assembly, which drives the rotating cylinder 10 to rotate. Four first moving grooves 11 are equidistantly arranged from top to bottom along the circumferential direction at the top end of the rotating cylinder 10. The rotating cylinder 10 supports the platform 12 and drives its rotation. The platform 12 is disposed within the rotating cylinder. At the top of the platform 10, the four corners of the platform 12 are provided with a second moving groove 13 that runs vertically through the inside and outside. The positions of the four second moving grooves 13 correspond one-to-one with the positions of the four first moving grooves 11. The inner cavities of the second moving grooves 13 are provided with sliding grooves 14 on both the left and right sides. The platform 12 serves as a platform for placing the profile frame and provides a stable support surface. The two ends of the first guide rod 15 are respectively set on the inner and outer sides of the inner cavity of the sliding groove 14. The first guide rod 15 is used to guide the slider 84 and ensure that the clamping plate 83 maintains linear motion during the movement. The adaptive clamping mechanism 8 is set in the inner cavity of the rotating cylinder 10. The adaptive clamping mechanism 8 can adaptively clamp profile frames of different sizes to ensure the stability and accuracy of the profile frames during the welding process. The tilt sensor 16 is set in the middle of the top of the inner cavity of the platform 12. The tilt sensor 16 is existing technology and will not be described in detail here. The tilt sensor 16 is used to monitor the levelness of the platform 12 in real time. When the levelness deviates, a signal is sent to trigger the balancing mechanism 9 to adjust.

[0038] As a preferred embodiment, the adaptive clamping mechanism 8 further includes: clamping plates 83, sliders 84, connecting rods 824, connecting cylinders 817, a synchronization component, and a drive component. There are four clamping plates 83, with the outer walls of each clamping plate 83 slidably fitted into the inner cavities of four second moving slots 13. The upper and lower sides of each clamping plate 83 slidably extend from the upper and lower sides of the second moving slots 13. Anti-slip rubber is provided on the inner side of each clamping plate 83. The clamping plates 83, as components that directly clamp the profile frame, achieve adaptive clamping of profile frames of different sizes through their movement. There are eight sliders 84, each located in the middle of the left and right sides of the four clamping plates 83. The eight sliders 84 slidably fitted into the inner cavities of eight sliding slots 14. The sliders 84 are slidably sleeved on the outer wall of the first guide rod 15. The sliders 84 are used to ensure the stability and accuracy of the clamping plates 83 during movement. The top end of the connecting rod 824 is rotatably mounted on the bottom end of the clamping plate 83 via a pin. The outer walls of the four connecting rods 824 are slidably fitted into the inner cavities of the four first moving slots 11. The connecting rods 824 can pull the clamping plate 83 to open and close. The bottom ends of the four connecting rods 824 are rotatably mounted on the four corners of the outer wall of the connecting cylinder 817 via pins. The outer wall of the connecting cylinder 817 is provided with several limiting slots 818 that communicate with its inner cavity at equal intervals from top to bottom along the circumferential direction. The up and down movement of the connecting cylinder 817 can realize the opening and closing of the clamping plate 83 by the connecting rods 824. The synchronization component is set in the inner cavity of the platform 12. The synchronization component can improve the synchronicity of the movement of the four clamping plates 83, ensuring that the four clamping plates 83 can move simultaneously and at the same speed during the clamping process, thereby achieving uniform clamping of the profile frame. The drive component is set at the bottom end of the inner cavity of the rotating cylinder 10. The drive component can drive the four clamping plates 83 to move.

[0039] The drive assembly includes: a third motor 812, a second screw 813, a lifting plate 814, a limit block 815, a spring 816, and a clamping force adjustment assembly. The third motor 812 is screwed to the middle of the bottom end of the inner cavity of the rotating drum 10. An encoder is provided at the output end of the third motor 812. The third motor 812 is existing technology and will not be described in detail here. As the core power source of the drive assembly, the third motor 812 provides rotational power for the adaptive clamping mechanism 8. The bottom end of the second screw 813 is connected to... The coupling locks the output end of the third motor 812. The top end of the second screw 813 is rotatably mounted at the bottom center of the platform 12 via a bearing. The connecting cylinder 817 is slidably sleeved on the outer wall of the second screw 813. The lifting plate 814 is screwed to the outer wall of the second screw 813 and slidably fitted into the top end of the inner cavity of the connecting cylinder 817. The lifting plate 814 serves as a component connecting the second screw 813 and the connecting cylinder 817, and its up-and-down movement drives the connecting cylinder 817. The movement of the cylinder 817 is influenced by several limiting blocks 815. These limiting blocks 815 are equidistantly arranged circumferentially on the outer wall of the lifting plate 814. Each limiting block 815 is slidably fitted into the inner cavity of a limiting groove 818. A spring 816 is embedded in the inner cavity of the connecting cylinder 817, with its bottom end engaged with the bottom end of the inner cavity of the connecting cylinder 817 and its top end engaged with the bottom end of the lifting plate 814. The spring 816 is a rotary spring, subject to external force. After being compressed or stretched, the spring undergoes elastic deformation and returns to its initial state after the external force is removed. The spring 816 is used to connect the lifting plate 814 and the connecting cylinder 817 and to push the connecting cylinder 817 downward. Thus, the elastic force of the spring 816 can be used to clamp the profile frame with the clamping plate 83. The clamping force adjustment component is set on the outer wall of the connecting cylinder 817. The clamping force adjustment component is used to adjust the clamping force of the clamping plate 83 on the profile frame to adapt to profile frames of different materials and thicknesses.

[0040] The clamping force adjustment assembly includes a lifting component, an adjusting plate 822, and a push-button switch 823. The lifting component is located on the outer wall of the connecting cylinder 817 and drives the adjusting plate 822 to move precisely up and down, adjusting the height of the push-button switch 823 to achieve precise control of the clamping force. The adjusting plate 822 is located on the outer wall of the lifting component and is driven to move up and down. The inner side of the adjusting plate 822 is slidably fitted into the inner cavity of one of the limiting grooves 818. The adjusting plate 822, as the moving part of the clamping force adjustment assembly, changes the height of the push-button switch 823 by moving up and down, thereby adjusting the clamping force. 823 is located at the top of the adjustment plate 822. The button switch 823 is located in the inner cavity of the limiting groove 818. The position of the button switch 823 corresponds to the position of the limiting block 815. The button switch 823 is electrically connected to the third motor 812. The button switch 823 serves as the sensing component of the clamping force adjustment assembly. When the limiting block 815 presses the button switch 823, the third motor 812 can be automatically turned off. The encoder at the output end of the third motor 812 records the number of rotations in real time. After the adaptive clamping mechanism 8 completes clamping, the size data of the profile frame is calculated by combining the pitch of the second screw 813 and the preset height of the button switch 823 in the clamping force adjustment assembly, based on the number of rotations recorded by the encoder.

[0041] The lifting assembly includes a second guide rod 819, a fourth motor 820, and a third screw 821. The upper and lower ends of the second guide rod 819 are respectively located on the upper and lower sides of the outer wall of the connecting cylinder 817. The adjusting plate 822 is slidably sleeved on the outer wall of the second guide rod 819. The second guide rod 819 serves as a guide component for the adjusting plate 822, ensuring the stability and straightness of the adjusting plate 822 during its up-and-down movement. The fourth motor 820 is screwed to the bottom end of the outer wall of the connecting cylinder 817. The fourth motor 820 is existing technology and will not be described in detail here. The fourth motor 820 serves as the power source for the lifting assembly, driving the third screw 821 to rotate, thereby causing the adjusting plate 822 to move up and down. The bottom end of the third screw 821 is locked to the output end of the fourth motor 820 through a coupling. The top end of the third screw 821 is rotatably located on the top end of the connecting cylinder 817 through a bearing. The adjusting plate 822 is screwed to the outer wall of the third screw 821.

[0042] The synchronization assembly includes: four rotating rods 81, drive slots 82, drive blocks 85, a first bevel gear 86, a third rotating rod 87, a second bevel gear 88, a first gear 89, a fourth rotating rod 810, and a second gear 811. The rotating rods 81 are four in number, with their ends rotatably mounted on the inner and outer sides of the inner cavities of the four second moving slots 13 via bearings. The inner ends of the rotating rods 81 rotatably extend into the inner cavity of the platform 12. The inner cavity of the clamping plate 83 is rotatably fitted onto the outer wall of the rotating rods 81. Two drive slots 82 are circumferentially formed on the outer wall of the rotating rods 81. Eight drive blocks 85 are eight in number, each positioned on the left and right sides of the inner cavities of the four clamping plates 83. The eight drive blocks 85 are slidably fitted into the inner cavities of the eight drive slots 82. The linear motion of the clamping plate 83 is converted into the rotational motion of the rotating rods 81 by the cooperation between the drive blocks 85 and the drive slots 82. The first bevel gear 86 is fitted onto... The fourth rotating rod 81 is connected to the inner side of the outer wall of the rotating rod 81 and locked by a set screw. There are four third rotating rods 87, which are rotatably set at the four corners of the bottom of the inner cavity of the platform 12 by bearings. The positions of the four third rotating rods 87 correspond to the positions of the four rotating rods 81. The second bevel gear 88 is sleeved on the top of the outer wall of the third rotating rod 87 and locked by a set screw. The four second bevel gears 88 mesh with the four first bevel gears 86. The first gear 89 is sleeved on the bottom of the outer wall of the third rotating rod 87 and locked by a set screw. The bottom end of the fourth rotating rod 810 is rotatably set at the middle of the bottom of the inner cavity of the platform 12 by bearings. The second gear 811 is sleeved on the outer wall of the fourth rotating rod 810 and locked by a set screw. The second gear 811 meshes with the four first gears 89. The synchronous movement of the four clamping plates 83 can be achieved by the cooperation between the second gear 811 and the four first gears 89.

[0043] As a preferred embodiment, the balancing mechanism 9 further includes: lifting legs 91, base plates 92, a second motor 93, a first screw 94, and rubber pads 95. There are four lifting legs 91, each located at one of the four corners of the bottom of the base 1. The lifting legs 91 serve as the main components for supporting and adjusting the levelness of the base 1, compensating for levelness deviations caused by factors such as foundation settlement and mechanical vibration through their lifting movements. The base plates 92 are slidably fitted onto the outer walls of the lifting legs 91, and each base plate 92 has a rubber pad 95 at its bottom. The base plates 92 serve as the supporting foundation for the lifting legs 91 and also bear the load. The weight of the entire device is provided by the rubber pad 95 at its bottom, which contacts the ground to provide stable support and shock absorption. The second motor 93 is screwed to the bottom of the inner cavity of the foot 92. The second motor 93 and the tilt sensor 16 are electrically connected. The second motor 93 is existing technology and will not be described in detail here. The second motor 93 serves as the power source for driving the lifting leg 91 to rise and fall. Its rotational motion drives the first screw 94 to rotate, thereby realizing the lifting adjustment of the lifting leg 91. The bottom end of the first screw 94 is locked to the output end of the second motor 93 through a coupling. The lifting leg 91 is screwed to the outer wall of the first screw 94.

[0044] As a preferred embodiment, the rotating assembly further includes: a first rotating rod 2, a first sprocket 3, a second rotating rod 4, a second sprocket 5, a first motor 6, and a chain 7. The bottom end of the first rotating rod 2 is rotatably mounted at the center of the bottom of the inner cavity of the base 1 via a bearing. The center of the bottom end of the rotating cylinder 10 is located at the top end of the first rotating rod 2. The first sprocket 3 is sleeved on the outer wall of the first rotating rod 2 and locked by a set screw. The bottom end of the second rotating rod 4 is rotatably mounted at the bottom of the inner cavity of the base 1 via a bearing. The second sprocket 5 is sleeved on the outer wall of the second rotating rod 4 and locked by a set screw. The first motor 6 is screwed to the top of the inner cavity of the base 1. The top of the second rotating rod 4 is locked to the output end of the first motor 6 through a coupling. The first motor 6 is existing technology and will not be described in detail here. The first motor 6 serves as the power source of the rotating assembly. Its rotation drives the second rotating rod 4 and the second sprocket 5 to rotate, thereby driving the entire rotating assembly to work. The two ends of the chain 7 are respectively sleeved on the outer walls of the first sprocket 3 and the second sprocket 5. The chain 7 serves as a transmission component, transmitting the rotational power of the second sprocket 5 to the first sprocket 3, thereby driving the first rotating rod 2 and the rotating drum 10 to rotate.

[0045] Its detailed connection method is a well-known technology in this field. The following mainly introduces the working principle and process, and the specific work is as follows.

[0046] Step 1: In use, first adjust the height of the button switch 823 according to the material of the profile frame to be welded, to prevent the clamping force applied by the clamping plate 83 to the profile frame from being too large and causing deformation of the profile frame. Start the fourth motor 820, and use the output end of the fourth motor 820 to drive the third screw 821 to rotate. The rotational force generated by the rotation of the third screw 821 can cause the adjusting plate 822 to move up and down, so that the adjusting plate 822 can drive the button switch 823 to move up and down until the button switch 823 is at a suitable distance from the bottom of the limit block 815. Turn off the fourth motor 820 and start the third motor 812, and use the output end of the third motor 812 to drive the second screw 813 to rotate. The rotational force generated by the rotation of the second screw 813 can cause the lifting plate 814 to move upward, so that the lifting plate 814 can push the connecting cylinder 817 to move upward. The upward movement of the connecting cylinder 817 can push the clamping plate 83 to move outward through the connecting rod 824 until it moves to a suitable position.

[0047] Step 2: Pre-fix the connecting corners of the square profile frame to be welded by spot welding. Place the pre-fixed square profile frame on the top of platform 12, and make the four sides of the square profile correspond to the four clamping plates 83 respectively. Start the third motor 812, and use the output end of the third motor 812 to drive the second screw 813 to rotate in the opposite direction. The rotational force generated by the rotation of the second screw 813 can cause the lifting plate 814 to move downward. The downward movement of the lifting plate 814 can be pushed by the spring 816 to move the connecting cylinder 817 downward synchronously with the lifting plate 814. The downward movement of the connecting cylinder 817 can be used by the connecting rod 824 to pull the four clamping plates 83 to move inward synchronously. As the clamping plates 83 move inward, they drive the driving block 85 to slide inward along the inner cavity of the driving groove 82. When the clamping plates 83 slide along the inner cavity of the second moving groove 13, the rotating rod 81 rotates in tandem with the clamping plates 83. This rotation of the rotating rod 81 drives the first bevel gear 86 to rotate. The rotation of the first bevel gear 86 engages with the second bevel gear 88, causing the third rotating rod 87 to drive the first gear 89 to rotate. The rotation of the first gear 89 then drives the second gear 811 to rotate. Since all four first gears 89 mesh with the second gear 811, the movement of the four clamping plates 83 is improved. The synchronization of movement ensures that the four clamping plates 83 move in a highly synchronized manner, thus avoiding uneven clamping of the profile frame due to asynchronous movement of the four clamping plates 83. This reduces the risk of profile deformation caused by uneven clamping force and makes the clamping plates 83 more stable when clamping the profile frame, reducing the risk of loosening or positional displacement caused by external interference (such as vibration). The clamping plates 83 continue to contact the four edges of the profile frame until they are in contact with each other. At this point, the profile frame blocks the clamping plates 83 from moving further inward, preventing the connecting cylinder 817 from moving further downward. Consequently, the continued downward movement of the lifting plate 814 gradually reduces the distance between the lifting plate 814 and the push-button switch 823. The spring 816 is compressed and undergoes elastic deformation until the limit block 815 and the button switch 823 come into contact. The limit block 815 presses the button switch 823, at which point the third motor 812 is turned off. The elastic force of the spring 816 can then provide a suitable clamping force for the profile frame. The encoder on the third motor 812 can record the number of rotations at the output end of the third motor 812. Based on the number of rotations at the output end of the third motor 812 and the height of the button switch 823, the size of the profile frame can be calculated. The calculated size signal of the profile frame is then transmitted to the automatic welding robot, which can help the automatic welding robot automatically locate the coordinates of the position to be welded.

[0048] Step 3: When automatically welding the profile frame on platform 12 using a welding robot, the first motor 6 can be started as welding progresses. The output of the first motor 6 drives the second rotating rod 4 to rotate. The rotation of the second rotating rod 4 drives the second sprocket 5 to rotate. The rotation of the second sprocket 5, in turn, causes the first rotating rod 2 to rotate through the cooperation between the chain 7 and the first sprocket 3. This, in turn, drives the rotating drum 10 and platform 12 to rotate, which in turn drives the profile frame to rotate, automatically changing the welding position. The tilt sensor 16 can monitor the levelness of platform 12 in real time. When the levelness of platform 12 deviates due to use, the tilt sensor 16 can transmit the monitored signal to the second motor 93, thereby activating one or more of the second motors 93. The rotation of the output of the second motor 93 drives the first screw 94 to rotate. The rotational force generated by the rotation of the first screw 94 causes the lifting leg 91 to move the base 1 upward, thereby adjusting the levelness of platform 12 until platform 12 is adjusted to a level state.

[0049] In summary, this device, through its adaptive clamping mechanism design, can flexibly adapt to square profile frames of different sizes. Its linkage mechanism enables information exchange between the welding robot and the rotating welding platform, automatically positioning the welding coordinates, reducing manual adjustments, and improving welding efficiency and accuracy. Simultaneously, it monitors the levelness of the rotating welding platform in real time to ensure accurate welding references, avoiding welding failures or deviations caused by levelness discrepancies, thus comprehensively improving welding quality and stability.

[0050] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rotary welding device for assembling profile frames, characterized in that, include: Base (1); A rotating assembly disposed within the cavity of the base (1); A balancing mechanism (9) is provided at the bottom of the base (1), and the level of the base (1) can be automatically adjusted by the balancing mechanism (9). A rotating cylinder (10) is rotatably mounted on the top of the inner cavity of the base (1) via a bearing. The top of the rotating cylinder (10) extends rotatably out of the inner cavity of the base (1). The bottom middle of the rotating cylinder (10) is located at the top of the rotating assembly. The rotating assembly can drive the rotating cylinder (10) to rotate. The top of the rotating cylinder (10) has four first moving slots (11) equidistantly spaced from top to bottom along the circumferential direction. Platform (12), the platform (12) is set at the top of the rotating cylinder (10). The top four corners of the platform (12) are provided with a second moving groove (13) that runs through the inside and outside. The positions of the four second moving grooves (13) correspond one-to-one with the positions of the four first moving grooves (11). The inner cavities of the second moving grooves (13) are provided with sliding grooves (14) on the left and right sides. The first guide rod (15) has its two ends respectively located on the inner and outer sides of the inner cavity of the slide groove (14); An adaptive clamping mechanism (8) is disposed in the inner cavity of the rotating cylinder (10); The adaptive clamping mechanism (8) includes: The clamps (83) are four in number. The outer walls of the four clamps (83) are respectively slidably fitted into the inner cavities of the four second moving slots (13). The upper and lower sides of the clamps (83) respectively slidably extend out of the upper and lower sides of the second moving slots (13). The slider (84) has eight sliders, which are respectively located in the middle of the left and right sides of the four clamps (83). The eight sliders (84) are slidably and compatiblely inserted into the inner cavity of the eight slide grooves (14). The sliders (84) are slidably sleeved on the outer wall of the first guide rod (15). The top end of the connecting rod (824) is rotatably mounted on the bottom end of the clamping plate (83) via a pin, and the outer walls of the four connecting rods (824) are respectively slidably adapted to be inserted into the inner cavity of the four first moving slots (11). The bottom ends of the four connecting rods (824) are rotatably disposed at the four corners of the outer wall of the connecting cylinder (817) via pins. The outer wall of the connecting cylinder (817) is provided with several limiting grooves (818) that communicate with its inner cavity, which are equidistantly spaced from top to bottom along the circumferential direction. A synchronization component is provided in the cavity of the platform (12), which can improve the synchronization of the movement of the four clamps (83); A drive assembly is located at the bottom of the inner cavity of the rotating drum (10), which can drive the four clamping plates (83) to move.

2. The rotary welding device for assembling profile frames according to claim 1, characterized in that, The driving component includes: The third motor (812) is screwed to the middle of the bottom of the inner cavity of the rotating drum (10), and the output end of the third motor (812) is equipped with an encoder; The second screw (813) has its bottom end locked to the output end of the third motor (812) by a coupling, and its top end is rotatably set at the bottom center of the platform (12) by a bearing. The connecting cylinder (817) is slidably sleeved on the outer wall of the second screw (813). Lifting plate (814), the lifting plate (814) is screwed to the outer wall of the second screw (813), and the lifting plate (814) is slidably and compatiblely inserted into the top of the inner cavity of the connecting cylinder (817); Limiting blocks (815), the number of limiting blocks (815) is several, the several limiting blocks (815) are respectively equidistantly arranged on the outer wall of the lifting plate (814) along the circumference, and the several limiting blocks (815) are respectively slidably adapted to be inserted into the inner cavity of several limiting grooves (818). Spring (816), the spring (816) is embedded in the inner cavity of the connecting cylinder (817), the bottom end of the spring (816) is engaged with the bottom end of the inner cavity of the connecting cylinder (817), and the top end of the spring (816) is engaged with the bottom end of the lifting plate (814). A clamping force adjustment component is disposed on the outer wall of the connecting cylinder (817).

3. The rotary welding device for assembling profile frames according to claim 2, characterized in that, The clamping force adjustment component includes: A lifting assembly is disposed on the outer wall of the connecting cylinder (817); Adjustment plate (822), the adjustment plate (822) is disposed on the outer wall of the lifting assembly, the lifting assembly can drive the adjustment plate (822) to move up and down, the inner side of the adjustment plate (822) is slidably adapted to be inserted into the inner cavity of one of the limiting grooves (818); A push button switch (823) is located at the top of the adjustment plate (822). The push button switch (823) is located in the inner cavity of the limiting groove (818). The position of the push button switch (823) corresponds to the position of the limiting block (815). The push button switch (823) is electrically connected to the third motor (812).

4. The rotary welding device for assembling profile frames according to claim 3, characterized in that, The encoder at the output end of the third motor (812) records the number of rotations in real time. After the adaptive clamping mechanism (8) completes clamping, the size data of the profile frame is calculated by combining the pitch of the second screw (813) and the preset height of the button switch (823) in the clamping force adjustment component with the number of rotations recorded by the encoder.

5. The rotary welding device for assembling profile frames according to claim 4, characterized in that, The synchronization component includes: There are four rotating rods (81). The two ends of the four rotating rods (81) are rotatably disposed on the inner and outer sides of the inner cavity of the four second moving slots (13) through bearings. The inner end of the rotating rod (81) extends rotatably into the inner cavity of the platform (12). The inner cavity of the clamping plate (83) is rotatably sleeved on the outer wall of the rotating rod (81). The outer wall of the rotating rod (81) has two driving slots (82) opened in the circumferential direction. The number of drive blocks (85) is eight. The eight drive blocks (85) are respectively disposed on the left and right sides of the inner cavity of the four clamping plates (83). The eight drive blocks (85) are slidably adapted to be inserted into the inner cavity of the eight drive slots (82). The first bevel gear (86) is sleeved on the inner side of the outer wall of the rotating rod (81) and locked by a set screw.

6. The rotary welding device for assembling profile frames according to claim 5, characterized in that, The synchronization component also includes: The third rotating rod (87) has four positions. The four third rotating rods (87) are rotatably set at the four corners of the bottom of the inner cavity of the platform (12) through bearings. The positions of the four third rotating rods (87) correspond to the positions of the four rotating rods (81). The second bevel gear (88) is sleeved on the top of the outer wall of the third rotating rod (87) and locked by a set screw. The four second bevel gears (88) mesh with the four first bevel gears (86) respectively. The first gear (89) is sleeved on the bottom of the outer wall of the third rotating rod (87) and locked by a set screw; The bottom end of the fourth rotating rod (810) is rotatably disposed in the middle of the bottom end of the inner cavity of the platform (12) via a bearing; The second gear (811) is sleeved on the outer wall of the fourth rotating rod (810) and locked by a set screw. The second gear (811) meshes with the four first gears (89).

7. The rotary welding device for assembling profile frames according to claim 6, characterized in that, An tilt sensor (16) is provided at the top center of the inner cavity of the platform (12).

8. The rotary welding device for assembling profile frames according to claim 7, characterized in that, The balancing mechanism (9) includes: The lifting legs (91) are four in number, and the four lifting legs (91) are respectively set at the four corners of the bottom end of the base (1); Foot (92), which is slidably sleeved on the outer wall of the lifting leg (91); The second motor (93) is screwed to the bottom of the inner cavity of the foot (92), and the second motor (93) is electrically connected to the tilt sensor (16); The first screw (94) has its bottom end locked to the output end of the second motor (93) via a coupling, and the lifting leg (91) is screwed to the outer wall of the first screw (94).

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