Special-shaped pipe welding device for fitness equipment

Abstract

The invention relates to a special-shaped pipe welding device for fitness equipment, and belongs to the pipe welding technology, the special-shaped pipe welding device comprises a machining platform and a welding support arranged on the rear side of the top of the machining platform, and the front end of the welding support is connected with a welding assembly through an elastic telescopic rod; the top of the machining platform is provided with two symmetrical special-shaped pipe clamping seats through a bidirectional synchronous driving part, a circular through groove is formed in each special-shaped pipe clamping seat, a measuring rotating ring and a clamping rotating ring are sequentially installed in each circular through groove from outside to inside, and a plurality of visual self-adaptive clamping parts are arranged on the inner wall of each clamping rotating ring in a circumferential uniform array mode. After the visual self-adaptive clamping piece clamps the special-shaped pipe, the positions of all the movable pieces are visually displayed through scales. The visual self-adaptive pipe calibration device is stable in clamping effect and high in applicability, pipe calibration work is visual, and the visual self-adaptive pipe calibration device has high application value.

Description

Technical Field

[0001] The present invention relates to the technical field of pipe welding, and particularly to a welding device for special-shaped pipes used in fitness equipment. Background Art

[0002] Fitness equipment refers to the equipment currently used by people to exercise. The main part of fitness equipment is usually welded by various pipes. When welding two pipes together, most of the time, the two pipes are pre-placed on the welding table, and then the position of the welding gap between the two pipes is adjusted so that the welding gap is aligned with the laser welding gun. Finally, the laser beam emitted by the laser welding gun acts on the welding gap of the two pipes to melt the two pipes and achieve the welding of the two pipes. This welding method requires ensuring the alignment of the two pipes. At present, the pipes used in fitness equipment are not just simple square pipes or round pipes, but mostly special-shaped pipes, such as oval pipes, mushroom pipes, and various types of horseshoe pipes. It is currently difficult to clamp and fix these special-shaped pipes with high adaptability.

[0003] In response to the above problems, a special-shaped pipe welding device for fitness equipment is disclosed in the Chinese invention patent with the authorization announcement number CN118720508B, which includes a base, and a clamping mechanism is fixedly connected to the top of the base; the clamping mechanism includes multiple groups of support blocks, and a set of guide rings are respectively slidably sleeved on the top of each group of support blocks. A fixed pipe is fixedly sleeved on the inner walls of the two guide rings on one side, and another set of fixed pipes is fixedly sleeved on the inner walls of the two guide rings on the other side.

[0004] The technical solution of the above invention mainly uses a cylinder to push the sliding ring, so that the sliding ring squeezes the first spring, causing multiple groups of clamping rods to approach each other, so that the pipes extending into the fixed rods are attached to the outer wall of the pipes through multiple groups of clamping heads. And during the sliding process of the sliding ring, after some of the clamping heads are attached to the outer wall of the pipe, other joints can be pushed to continue to fit against the outer wall of the pipe, so that different-shaped special-shaped pipes can be fixed during the welding process, thereby improving the adaptability of the welding device.

[0005] It can be understood that although the technical solution disclosed in the above invention effectively improves the adaptive fixing effect for different special-shaped pipes, the fixing effect mainly relies on springs. Springs have great instability in actual applications. Although they have adaptive capabilities, they may vibrate when subjected to some external forces, such as being touched by a welding torch. As a result, the clamping effect becomes unstable, the special-shaped pipe may shift in position, which in turn causes changes in the weld position and affects the continuous and stable progress of the welding work. At the same time, both the technical solution of the above invention and existing welding devices only have the method of calibrating pipe alignment by visual observation. The calibration method is not precise enough, time-consuming and laborious, and lacks a visual calibration structure. In view of this, this application is proposed. Summary of the Invention

[0006] To overcome the technical defects existing in the prior art, the present invention provides a special-shaped pipe welding device for fitness equipment, which has the effects of stable clamping effect, strong applicability, and convenient pipe calibration.

[0007] The technical solution adopted by the present invention is as follows: It includes a processing platform and a welding bracket arranged at the rear side of the top of the processing platform. The front end of the welding bracket is connected with a welding component through an elastic telescopic rod. Two symmetrical special-shaped pipe clamping seats are installed on the top of the processing platform through a bidirectional synchronous driving component. By turning on the bidirectional synchronous driving component, the two special-shaped pipe clamping seats can be synchronously controlled to approach or move away from each other, so as to control the movement of the special-shaped pipe located in the special-shaped pipe clamping seat. A circular through groove is opened in the special-shaped pipe clamping seat. A measuring rotating ring and a clamping rotating ring are sequentially installed from outside to inside in the circular through groove. A plurality of visual adaptive clamping members are arranged in a circumferentially uniform array on the inner wall of the clamping rotating ring. The positions of the movable parts of each visual adaptive clamping member after clamping the special-shaped pipe are intuitively displayed through scales. A distance measuring instrument is fixedly arranged on the side wall of the measuring rotating ring. The distance measuring instrument can move around the outer circumference of the special-shaped pipe to measure the distance to various parts of the special-shaped pipe as the measuring rotating ring rotates. Two special-shaped pipes to be welded are respectively inserted into the clamping rotating rings on both sides, and then the special-shaped pipes are fixed at various parts through a plurality of visual adaptive clamping members. After the visual adaptive clamping members clamp and fix the special-shaped pipe, the specific movement distances of the movable parts of the visual adaptive clamping members can be intuitively displayed through scales. If the movement distances of the visual adaptive clamping members in the two special-shaped pipe clamping seats are different, only simple fine-tuning is required to ensure that the movable parts of the visual adaptive clamping members in the two special-shaped pipe clamping seats are synchronized, so as to ensure the alignment of the two special-shaped pipes.

[0008] Preferably, the visual adaptive clamping member is composed of a fixed cylinder installed on the inner side wall of the clamping swivel ring, a moving column movably inserted into the fixed cylinder, and an electrically driven double telescopic rod fixedly arranged at the end of the moving column. Inner bent connecting rods that bend towards the center below the double telescopic rod are fixedly arranged on both telescopic ends of the double telescopic rod. A clamping roller for pressing against the special-shaped pipe to be welded is fixedly arranged on the inner bent connecting rod. The special-shaped pipe to be welded is pressed by the clamping roller. There are two clamping rollers with symmetrical positions on a single visual adaptive clamping member, and the distance between the clamping rollers can be synchronously controlled by the double telescopic rod. This structural design can adaptively press against the outer wall of the special-shaped pipe without sliding off. With the cooperation of the clamping rollers of multiple visual adaptive clamping members, it can ensure that the special-shaped pipe is stably fixed between each clamping roller without loosening. An anti-slip pad is arranged on the outer wall of the clamping roller.

[0009] Preferably, an adjustment frame is fixedly arranged on the outer side wall of the fixed cylinder. A sliding limit groove is opened in the adjustment frame. A strip-shaped screw rod clamping groove is opened in the sliding limit groove. A sliding adjustment block is slidably clamped in the sliding limit groove. A threaded rod that can penetrate the sliding adjustment block and insert into the strip-shaped screw rod clamping groove is threadedly connected to the sliding adjustment block. A rotary handle is fixed at one end of the threaded rod. The sliding adjustment block can flexibly move in the sliding limit groove of the adjustment frame. When fixation is required, just rotate the rotary handle and screw the threaded rod into the strip-shaped screw rod clamping groove for fixation.

[0010] Preferably, one end of the moving column located inside the fixed cylinder is connected to the inner wall of the fixed cylinder through a compression spring. In the unloaded state, the moving column is integrally received into the fixed cylinder under the pull of the compression spring. A strip-shaped card slot is opened on the fixed cylinder. An outer convex block that synchronously slides in the strip-shaped card slot is arranged on the moving column. A guide wheel is fixedly installed on the outer wall of the fixed cylinder. A traction wire is fixed on the side wall of the outer convex block. One end of the traction wire passes out of the fixed cylinder, winds around the guide wheel, and then penetrates into the adjustment frame and is fixed to the sliding adjustment block. By controlling the movement of the sliding adjustment block in the sliding limit groove of the adjustment frame, the traction wire is pulled out of the fixed cylinder, so that the moving column is pulled outwards through the outer convex block, and the double telescopic rod and the clamping roller at the end of the moving column can extend to press and fix the special-shaped pipe.

[0011] Preferably, scale lines are provided on the outer wall of the adjustment frame and the outer wall of the telescopic end of the bidirectional telescopic rod, respectively for visually displaying the position of the sliding adjustment block and the extended position of the telescopic end of the bidirectional telescopic rod. The realization of the clamping effect of the visual adaptive clamping member depends on the moving column and the clamping roller. The position of the moving column is controlled by the sliding adjustment block, and the calibration work can be carried out by comparing the positions of each sliding adjustment block and the scale lines on the adjustment frame. The position of the clamping roller is controlled by the extension and retraction of the bidirectional telescopic rod, which can be determined by comparing the extension and retraction positions of each bidirectional telescopic rod.

[0012] Preferably, a first driving member for driving the measuring rotary ring to rotate is installed on the outer wall of the special-shaped pipe clamping seat. The first driving member consists of a second motor embedded in the special-shaped pipe clamping seat and a driving gear installed on the output shaft of the second motor. A meshing gear meshing with the driving gear is provided on the outer wall of the measuring rotary ring. The opening of the second motor controls the rotation of the driving gear, which in turn drives the meshing gear and the measuring rotary ring to rotate.

[0013] Preferably, a second driving member for driving the clamping rotary ring to rotate and thus controlling the overall rotation of the special-shaped pipe is installed on the outer wall of the special-shaped pipe clamping seat. A protective shell for wrapping the second driving member is also fixed on the outer wall of the special-shaped pipe clamping seat. The second driving member consists of a first motor installed on the outer wall of the special-shaped pipe clamping seat, a rotating column installed on the output shaft of the first motor, and a plurality of meshing protrusions uniformly arranged on the outer side wall of the rotating column. A plurality of meshing grooves are formed in a circular array on the outer wall of the clamping rotary ring for connecting the meshing protrusions. The opening of the first motor drives the meshing protrusions on the rotating column to rotate, so that the meshing protrusions are inserted into the meshing teeth to drive the clamping rotary ring to rotate.

[0014] Preferably, the bidirectional synchronous driving member includes a sleeve rod, two fixing pieces fixed on both sides of the top of the processing platform for installing the sleeve rod, a third motor fixed on the rear side of the top of the platform, and a bidirectional lead screw connected to the output shaft of the third motor. The two special-shaped pipe clamping seats are respectively connected to two opposite threaded sections on the bidirectional lead screw, and one end of the bidirectional lead screw is connected to the processing platform through a reinforcing piece.

[0015] Preferably, connection blocks are provided at both the front and rear ends of the bottom of the special-shaped pipe clamping seat. One of the connection blocks is movably inserted through the sleeve rod, and the other connection block is connected to the threaded section of the bidirectional lead screw. The opening of the third motor drives the bidirectional lead screw to rotate, thereby driving the two special-shaped pipe clamping seats to move away from or close to each other.

[0016] Preferably, the welding assembly is specifically an integrated welding assembly, which includes a mounting panel installed on the telescopic end of the elastic telescopic rod and a welding torch fixed at the center position of the mounting panel. The upper and lower sides of the mounting panel are respectively provided with a first extension rod and a second extension rod. One end of the first extension rod is fixed with a fourth motor, and a grinding disc is connected to the output shaft of the fourth motor. The end of the second extension rod is movably provided with a ball that can roll in all directions. The welding torch is used for basic welding work. Due to the supporting effect of the elastic telescopic rod, the second extension rod can continuously press the ball against the outer wall of the special-shaped pipe. The distance between the welding head of the welding torch and the special-shaped pipe is slightly shorter, and the weld of the special-shaped pipe can be continuously welded at a better welding distance.

[0017] The beneficial effects of the present invention are as follows: 1. In this application, the special-shaped pipe is clamped by the visual adaptive clamping member, and the clamping effect does not rely on the elastic structure. Therefore, the clamping effect is stable, and the special-shaped pipe will not shift under the action of external force easily. At the same time, the movement distance of the movable structure of the visual adaptive clamping member is visible. By comparing the specific states of the visual adaptive clamping members in the two special-shaped pipe clamping seats, fine-tuning can be carried out. After fine-tuning, the distance measuring instrument can be used for secondary confirmation. The combination of the two can ensure the alignment between the special-shaped pipes without visual observation and calibration, which has high application value.

[0018] 2. The welding assembly in this application is an integrated welding assembly. The welding torch is used for basic welding work. Due to the supporting effect of the elastic telescopic rod, the second extension rod can continuously press the ball against the outer wall of the special-shaped pipe. The distance between the welding head of the welding torch and the special-shaped pipe is slightly shorter, and the weld of the special-shaped pipe can be continuously welded at a better welding distance. The fourth motor can control the rotation of the grinding disc, and the surface of the weld can be cleaned after welding. The overall functionality is strong, and it can adaptively maintain a good welding distance while completing the welding and weld cleaning work in one stop. Description of the Drawings

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 It is a schematic diagram of the structure of the present invention from the left side view.

[0021] Figure 3 It is a schematic diagram of the structure of the two-way synchronous driving member in the present invention.

[0022] Figure 4 It is a schematic diagram of the structure of the integrated welding assembly in the present invention.

[0023] Figure 5 It is a schematic diagram of the positions of the special-shaped pipe clamping seat, the measuring rotating ring, the clamping rotating ring and the visual adaptive clamping member in the present invention.

[0024] Figure 6 This is a side view of the special-shaped tube clamping seat, the measuring ring clamping ring and the visual adaptive clamping member in the present invention.

[0025] Figure 7 This is a schematic structural diagram of the first driving member and the second driving member in the present invention.

[0026] Figure 8 This is a schematic disassembled structural diagram of the measuring ring, the clamping ring and the visual adaptive clamping member in the present invention.

[0027] Figure 9 This is a schematic structural diagram of the visual adaptive clamping member in the present invention.

[0028] Figure 10 This is a schematic structural diagram of the visual adaptive clamping member in the present invention with the adjustment frame hidden.

[0029] Figure 11 This is a schematic structural diagram of the connection of the moving column in the visual adaptive clamping member of the present invention.

[0030] Explanation of reference numerals in the drawings: In the figure: 1. Processing platform; 2. Welding bracket; 3. Elastic telescopic rod; 4. Integrated welding assembly; 401. Installation panel; 402. Welding torch; 403. First extension rod; 404. Fourth motor; 405. Grinding disc; 406. Second extension rod; 407. Ball; 5. Bidirectional synchronous driving member; 501. Sleeve rod; 502. Fixed piece; 503. Third motor; 504. Bidirectional lead screw; 6. Special-shaped tube clamping seat; 601. Connection block; 7. Measuring ring; 701. Meshing gear; 8. Clamping ring; 801. Meshing groove; 9. Visual adaptive clamping member; 901. Fixed cylinder; 902. Moving column; 903. Bidirectional telescopic rod; 904. Inner bent connecting rod; 905. Clamping roller; 906. Anti-slip pad; 907. Adjustment frame; 908. Sliding limit groove; 909. Sliding adjustment block; 910. Threaded rod; 911. Rotating handle; 912. Compression spring; 913. Traction wire; 914. Guide wheel; 915. Outer convex block; 916. Strip-shaped slot; 917. Scale line; 10. First driving member; 11. Protective shell; 12. First motor; 13. Rotating column; 14. Meshing protrusion; 15. Rangefinder; 16. Second motor; 17. Driving gear. Detailed implementation

[0031] The present invention will be further described below with reference to the accompanying drawings: Embodiment 1

[0032] As Figures 1-11 shown, this embodiment provides a special-shaped pipe welding device for fitness equipment, including a processing platform 1 and a welding bracket 2 arranged at the rear side of the top of the processing platform 1. The front end of the welding bracket 2 is connected with a welding assembly through an elastic telescopic rod 3. The welding bracket 2 and the welding assembly are located at the middle rear side position of the processing platform 1. After two special-shaped pipes to be welded are aligned and moved to one side of the welding assembly, the welding work can be carried out. The top of the processing platform 1 is provided with two symmetrical special-shaped pipe clamping seats 6 through a bidirectional synchronous driving member 5. By turning on the bidirectional synchronous driving member 5, the two special-shaped pipe clamping seats 6 can be synchronously controlled to approach or move away from each other, so as to control the movement of the special-shaped pipes located in the special-shaped pipe clamping seats 6. A circular through groove is opened in the special-shaped pipe clamping seat 6. A measuring rotating ring 7 and a clamping rotating ring 8 are sequentially installed from the outside to the inside in the circular through groove. A plurality of visual adaptive clamping members 9 are arranged in a circumferential and uniform array on the inner wall of the clamping rotating ring 8. After the visual adaptive clamping members 9 clamp the special-shaped pipes, the positions of the respective moving members are intuitively displayed through scales. A distance measuring instrument 15 is fixedly arranged on the side wall of the measuring rotating ring 7. The distance measuring instrument 15 can move around the outer circumference of the special-shaped pipe to measure the distances to various parts of the special-shaped pipe as it rotates along with the measuring rotating ring 7.

[0033] During the actual use of the present invention, two special-shaped tubes to be welded are respectively inserted into the clamping rotary rings 8 on both sides, and then the various parts of the special-shaped tubes are fixed by a plurality of visual adaptive clamping members 9. After the special-shaped tubes are clamped and fixed by the visual adaptive clamping members 9, the specific moving distances of the movable parts of the visual adaptive clamping members 9 can be intuitively displayed by scales. If the moving distances of the visual adaptive clamping members 9 in the two special-shaped tube clamping seats 6 are different, only simple fine-tuning is required to ensure that the moving parts of the visual adaptive clamping members 9 in the two special-shaped tube clamping seats 6 are synchronized. After synchronization, control the measuring rotary ring 7 to rotate, so that the distance measuring instrument 15 can move along the outer circumference of the special-shaped tube with the rotation of the measuring rotary ring 7 to measure the distances of various parts of the special-shaped tube. The distance measuring instrument 15 can be connected to a computer to generate a distance change curve graph on the computer. By comparing the data of the two distance measuring instruments 15 on the left and right, it can be judged whether the clamping positions of the two special-shaped tubes are synchronized. After clamping the special-shaped tubes by the visual adaptive clamping members 9 and fine-tuning, and then reconfirming by the distance measuring instrument 15, it can ensure that the two special-shaped tubes are aligned. After alignment, control the two special-shaped tube clamping seats 6 to approach each other so that the two special-shaped tubes are in contact to form a weld. At this time, observe whether the weld is aligned with the welding torch 402. After alignment, control the clamping rotary ring 8 to rotate and simultaneously turn on the welding torch 402 for welding. Compared with the prior art, in this application, the special-shaped tubes are clamped by the visual adaptive clamping members 9, and the clamping effect does not rely on an elastic structure, so the clamping effect is stable, and the special-shaped tubes will not shift under the action of an external force easily. At the same time, the moving distance of the movable structure of the visual adaptive clamping members 9 is visible, and fine-tuning can be performed by comparing the specific states of the visual adaptive clamping members 9 in the two special-shaped tube clamping seats 6. After fine-tuning, reconfirmation can also be performed by the distance measuring instrument 15. The combination of the two can ensure the alignment between the special-shaped tubes without visual observation and calibration.

[0034] Specifically, as Figures 9-11As shown in the figure, the visual adaptive clamp 9 is composed of a fixed cylinder 901 installed on the inner side wall of the clamping swivel 8, a moving column 902 movably inserted into the fixed cylinder 901, and an electric drive type bidirectional telescopic rod 903 fixedly arranged at the end of the moving column 902. Inner bent connecting rods 904 that are bent downward towards the center direction of the bidirectional telescopic rod 903 are fixedly arranged on both telescopic ends of the bidirectional telescopic rod 903. Clamping rollers 905 for pressing against the special-shaped pipe to be welded are fixedly arranged on the inner bent connecting rods 904. The special-shaped pipe to be welded is pressed by the clamping rollers 905. There are two symmetrically positioned clamping rollers 905 on a single visual adaptive clamp 9, and the distance between the clamping rollers 905 can be synchronously controlled by the bidirectional telescopic rod 903. This structural design can adaptively press against the outer wall of the special-shaped pipe without sliding and detachment. With the cooperation of the clamping rollers 905 of multiple visual adaptive clamps 9, it can ensure that the special-shaped pipe is stably fixed between each clamping roller 905 without loosening. Anti-slip pads 906 are arranged on the outer walls of the clamping rollers 905, which can improve the clamping stability to a certain extent and prevent the pipe from sliding, but it can still move under strong force, such as when it is necessary to push the special-shaped pipe to move left and right to adjust the weld position.

[0035] An adjustment frame 907 is fixedly arranged on the outer side wall of the fixed cylinder 901. A sliding limit groove 908 is opened in the adjustment frame 907. A strip-shaped screw rod clamping groove is opened in the sliding limit groove 908. A sliding adjustment block 909 is slidably clamped in the sliding limit groove 908 of the adjustment frame 907. A threaded rod 910 that can penetrate the sliding adjustment block 909 and insert into the strip-shaped screw rod clamping groove is threadedly connected to the sliding adjustment block 909. A rotating handle 911 is fixed at one end of the threaded rod 910. The sliding adjustment block 909 can flexibly move in the sliding limit groove 908 of the adjustment frame 907. When fixation is required, just rotate the rotating handle 911 and screw the threaded rod 910 into the strip-shaped screw rod clamping groove. The cross-sectional shape of the strip-shaped screw rod clamping groove is an inverted trapezoid, so that the threaded rod 910 is tightly clamped by the narrow trapezoid after being screwed into the strip-shaped screw rod clamping groove and thus cannot move, realizing the fixation of the sliding adjustment block 909.

[0036] One end of the movable column 902 located inside the fixed cylinder 901 is connected to the inner wall of the fixed cylinder 901 through a contraction spring 912. In the unloaded state, the movable column 902 is integrally received into the fixed cylinder 901 under the pulling of the contraction spring 912. A strip-shaped card slot is provided on the fixed cylinder 901, and an outer convex block 915 that is synchronously slidably arranged in the strip-shaped card slot is provided on the movable column 902. A guide wheel 914 is fixedly installed on the outer wall of the fixed cylinder 901. A traction wire 913 is fixed to the side wall of the outer convex block 915. One end of the traction wire 913 passes through the fixed cylinder 901, passes around the guide wheel 914, and then penetrates into the adjustment frame 907 and is fixedly connected to the sliding adjustment block 909. Normally, the movable column 902 is integrally received into the fixed cylinder 901 under the pulling of the contraction spring 912 and remains in a contracted state. When it is necessary to clamp the special-shaped pipe, only need to control the movement of the sliding adjustment block 909 in the sliding limit slot 908 of the adjustment frame 907, pull out the traction wire 913 from the fixed cylinder 901, so as to pull the movable column 902 outwards through the outer convex block 915. The bidirectional telescopic rod 903 and the clamping roller 905 at the end of the movable column 902 can extend to tightly fix the special-shaped pipe. When it is necessary to unload the pipe, only need to screw out the threaded rod 910 from the strip-shaped screw clamping groove, and under the action of the contraction spring 912, each clamping roller 905 can release the restriction on the special-shaped pipe, and the unloading efficiency is relatively high.

[0037] Specifically, as Figure 9 shown, scale lines 917 are provided on the outer wall of the adjustment frame 907 and the outer wall of the telescopic end of the bidirectional telescopic rod 903, which are respectively used to visually display the position of the sliding adjustment block 909 and the position where the telescopic end of the bidirectional telescopic rod 903 extends. The realization of the clamping effect of the visual adaptive clamping member 9 depends on the movable column 902 and the clamping roller 905. The position of the movable column 902 is controlled by the sliding adjustment block 909. The calibration work can be carried out by comparing the positions of the scale lines 917 on each sliding adjustment block 909 and the adjustment frame 907. The position of the clamping roller 905 is controlled by the telescopic control of the bidirectional telescopic rod 903, and can be determined by comparing the telescopic positions of each bidirectional telescopic rod 903.

[0038] Specifically, as Figure 7 shown, a first driving member 10 for driving the measurement rotating ring 7 to rotate is installed on the outer wall of the special-shaped pipe clamping seat 6. The first driving member 10 consists of a second motor 16 embedded in the special-shaped pipe clamping seat 6 and a driving gear 17 installed on the output shaft of the second motor 16. A meshing gear 701 meshed with the driving gear 17 is provided on the outer wall of the measurement rotating ring 7. The opening of the second motor 16 controls the rotation of the driving gear 17, and further drives the meshing gear 701 and the measurement rotating ring 7 to rotate.

[0039] Specifically, as Figure 1As shown, a second driving member for driving the clamping rotating ring 8 to rotate, thereby controlling the overall rotation of the special-shaped pipe, is installed on the outer wall of the special-shaped pipe clamping seat 6. A protective shell 11 for wrapping the second driving member is also fixed on the outer wall of the special-shaped pipe clamping seat 6. The second driving member is composed of a first motor 12 installed on the outer wall of the special-shaped pipe clamping seat 6, a rotating column 13 installed on the output shaft of the first motor 12, and a plurality of engaging protrusions 14 uniformly arranged on the outer side wall of the rotating column 13. A plurality of engaging grooves 801 are formed in an annular array on the outer wall of the clamping rotating ring 8 for connecting the engaging protrusions 14. When the first motor 12 is turned on, the engaging protrusions 14 on the rotating column 13 rotate, so that the engaging protrusions 14 are inserted into the engaging teeth to drive the clamping rotating ring 8 to rotate. The measuring rotating ring 7 and the clamping rotating ring 8 are driven by different driving members. Although they are adjacent rotating structures, they do not affect each other, which can ensure the stable progress of each work.

[0040] Specifically, as Figure 3 and Figure 5 shown, the bidirectional synchronous driving member 5 includes a sleeve rod 501, two fixing pieces 502 fixed on both sides of the top of the processing platform 1 for installing the sleeve rod 501, a third motor 503 fixed on the rear side of the top of the platform, and a bidirectional lead screw 504 connected to the output shaft of the third motor 503. The two special-shaped pipe clamping seats 6 are respectively connected to two opposite threaded sections on the bidirectional lead screw 504. One end of the bidirectional lead screw 504 is connected to the processing platform 1 through a reinforcing piece. Connecting blocks 601 are arranged at the front and rear ends of the bottom of the special-shaped pipe clamping seat 6. The connecting block 601 on one side is movably inserted through the sleeve rod 501, and the connecting block 601 on the other side is connected to the threaded section of the bidirectional lead screw 504. By turning on the third motor 503, the bidirectional lead screw 504 rotates, thereby driving the two special-shaped pipe clamping seats 6 to move away from or close to each other. Embodiment 2

[0041] In this embodiment, the welding assembly is specified on the basis of Embodiment 1. Specifically, as Figure 4As shown, the welding assembly is specifically an integrated welding assembly 4. The integrated welding assembly 4 includes a mounting panel 401 installed on the telescopic end of the elastic telescopic rod 3 and a welding torch 402 fixed at the center position of the mounting panel 401. The upper and lower sides of the mounting panel 401 are respectively provided with a first extension rod 403 and a second extension rod 406. One end of the first extension rod 403 is fixed with a fourth motor 404, and a grinding disc 405 is connected to the output shaft of the fourth motor 404. A ball 407 that can roll in all directions is movably arranged at the end of the second extension rod 406. During the actual use of the welding assembly, the welding torch 402 is used for basic welding work. Due to the supporting effect of the elastic telescopic rod 3, the second extension rod 406 can continuously press the ball 407 against the outer wall of the special-shaped pipe. The distance between the welding head of the welding torch 402 and the special-shaped pipe is slightly shorter, and it can continuously weld the weld of the special-shaped pipe at a better welding distance. The fourth motor 404 can control the rotation of the grinding disc 405 and can clean the surface of the weld after welding. The overall functionality is strong, and it can adaptively maintain a good welding distance while completing the welding and weld cleaning work in one stop.

[0042] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. An abnormal-shaped pipe welding device for fitness equipment, comprising a processing platform (1) and a welding bracket (2) arranged at the rear side of the top of the processing platform (1). The front end of the welding bracket (2) is connected with a welding component through an elastic telescopic rod (3), and is characterized in that: At the top of the processing platform (1), two symmetrical special-shaped pipe clamping seats (6) are installed through a bidirectional synchronous driving member (5). A circular through groove is formed in the special-shaped pipe clamping seat (6). Inside the circular through groove, a measuring rotating ring (7) and a clamping rotating ring (8) are installed in sequence from outside to inside. A number of visual adaptive clamping members (9) are arranged in a circumferential uniform array on the inner wall of the clamping rotating ring (8). After the special-shaped pipe is clamped by the visual adaptive clamping members (9), the positions of the respective moving members are intuitively displayed through scales. A distance measuring instrument (15) is fixedly arranged on the side wall of the measuring rotating ring (7). The distance measuring instrument (15) can move along the outer circumference of the special-shaped pipe to measure the distances to various parts of the special-shaped pipe as it rotates with the measuring rotating ring (7).

2. The special-shaped pipe welding device for fitness equipment according to claim 1, characterized in that: The visual adaptive clamping member (9) is composed of a fixed cylinder (901) installed on the inner side wall of the clamping rotating ring (8), a moving column (902) movably inserted into the fixed cylinder (901), and an electric drive type bidirectional telescopic rod (903) fixedly arranged at the end of the moving column (902). Inner bending connecting rods (904) that are bent towards the center direction below the bidirectional telescopic rod (903) are fixedly arranged on both telescopic ends of the bidirectional telescopic rod (903). A clamping roller (905) for pressing against the special-shaped pipe to be welded is fixedly arranged on the inner bending connecting rod (904). An anti-slip pad (906) is arranged on the outer wall of the clamping roller (905).

3. The special-shaped pipe welding device for fitness equipment according to claim 2, characterized in that: An adjusting frame (907) is fixedly arranged on the outer side wall of the fixed cylinder (901). A sliding limit groove (908) is formed in the adjusting frame (907). A strip-shaped screw rod clamping groove is formed in the sliding limit groove (908). A sliding adjusting block (909) is slidably clamped in the sliding limit groove (908). A threaded rod (910) that can penetrate the sliding adjusting block (909) and insert into the strip-shaped screw rod clamping groove is threadedly connected to the sliding adjusting block (909). A rotating handle (911) is fixed at one end of the threaded rod (910).

4. The special-shaped pipe welding device for fitness equipment according to claim 3, characterized in that: One end of the moving column (902) located inside the fixed cylinder (901) is connected to the inner wall of the fixed cylinder (901) through a compression spring (912). In the non-loaded state, the moving column (902) is integrally received into the fixed cylinder (901) under the pulling of the compression spring (912). A strip-shaped clamping groove is formed in the fixed cylinder (901). An outer convex block (915) that synchronously slides in the strip-shaped clamping groove is arranged on the moving column (902). A guide wheel (914) is fixedly installed on the outer wall of the fixed cylinder (901). A traction wire (913) is fixed on the side wall of the outer convex block (915). One end of the traction wire (913) passes out of the fixed cylinder (901), passes around the guide wheel (914), and then penetrates into the adjusting frame (907) and is fixedly connected to the sliding adjusting block (909).

5. The special-shaped pipe welding device for fitness equipment according to claim 4, characterized in that: Scale lines (917) are provided on the outer wall of the adjustment frame (907) and the outer wall of the telescopic end of the bidirectional telescopic rod (903), respectively for intuitively displaying the position of the sliding adjustment block (909) and the extended position of the telescopic end of the bidirectional telescopic rod (903).

6. The special-shaped pipe welding device for fitness equipment according to claim 1, characterized in that: A first driving member (10) for driving the measuring rotating ring (7) to rotate is installed on the outer wall of the special-shaped tube clamping seat (6). The first driving member (10) consists of a second motor (16) embedded in the special-shaped tube clamping seat (6) and a driving gear (17) installed on the output shaft of the second motor (16). A meshing gear (701) meshingly connected with the driving gear (17) is provided on the outer wall of the measuring rotating ring (7).

7. The special-shaped pipe welding device for fitness equipment according to claim 1, wherein: A second driving member for driving the rotation of the clamping ring (8) to control the rotation of the entire shaped tube is installed on the outer wall of the shaped tube clamping seat (6). A protective shell (11) for wrapping the second driving member is also fixed on the outer wall of the shaped tube clamping seat (6). The second driving member is composed of a first motor (12) installed on the outer wall of the shaped tube clamping seat (6), a rotating column (13) installed on the output shaft of the first motor (12), and a plurality of engaging protrusions (14) uniformly arranged on the outer side wall of the rotating column (13). A plurality of engaging grooves (801) are provided in an annular array on the outer wall of the clamping ring (8) for connecting with the engaging protrusions (14).

8. The special-shaped pipe welding device for fitness equipment according to claim 1, characterized in that: The bidirectional synchronous driving member (5) comprises a sleeve rod (501), two fixing plates (502) fixed on both sides of the top of the processing platform (1) for mounting the sleeve rod (501), a third motor (503) fixed on the rear side of the top of the platform, and a bidirectional screw rod (504) connected to the output shaft of the third motor (503), the two special-shaped pipe clamping seats (6) are respectively connected to two opposite threaded sections on the bidirectional screw rod (504), and one end of the bidirectional screw rod (504) is connected to the processing platform (1) through a reinforcing plate.

9. The special-shaped pipe welding device for fitness equipment according to claim 8, characterized in that: Connecting blocks (601) are provided at both the front and rear ends of the bottom of the special-shaped tube clamping seat (6). The connecting block (601) on one side is movably mounted on the sleeve rod (501), and the connecting block (601) on the other side is connected to the threaded section of the bidirectional screw rod (504).

10. The special-shaped pipe welding device for fitness equipment according to claim 1, characterized in that: The welding assembly is specifically an integrated welding assembly (4), comprising a mounting panel (401) mounted on the telescopic end of the elastic telescopic rod (3) and a welding gun (402) fixed at the center of the mounting panel (401), a first extension rod (403) and a second extension rod (406) being respectively provided on the upper and lower sides of the mounting panel (401), a fourth motor (404) being fixed to one end of the first extension rod (403), a grinding plate (405) being connected to the output shaft of the fourth motor (404), and a universally rolling ball (407) being movably provided at the end of the second extension rod (406).

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