Special-shaped pipe welding device for fitness equipment production

Abstract

The invention is suitable for the field of welding, and provides a special-shaped pipe welding device for fitness equipment production, the special-shaped pipe welding device comprises a base table plate and a butt-joint plate, the base table plate is fixedly arranged, the butt-joint plate is movably arranged, and a sliding rail mechanism is arranged at the bottom of the butt-joint plate; a welding table is arranged between the base table plate and the butt joint plate, a surrounding welding mechanism is arranged on the welding table, and a clamp mechanism is arranged at the top end of the base table plate and the top end of the butt joint plate. When the special-shaped workpiece clamping device is used, a worker pulls the pulling frame, the connecting frame and the movable block backwards through the pull ring, then two special-shaped workpieces to be treated are placed on the base table plate and the butt joint plate correspondingly, and when the worker loosens the pull ring, the pulling frame, the connecting frame and the movable block apply pressure for locking the special-shaped workpieces through the clamping spring; when the locking bolt is loosened, the angle can be changed by rotating the inner container, locking is conducted again, and the cantilever beam rod and the rubber block at the end of the cantilever beam rod can abut against the irregular side wall of the special-shaped workpiece.

Description

Technical Field

[0001] The invention belongs to the field of welding, and in particular relates to a special-shaped pipe welding device for producing fitness equipment. Background Art

[0002] With the development of industrial technology, modern arc welding technology has become more and more perfect. The arc emitted by the arc welding machine welds the metal weld. For the pipe processing of fitness equipment, the pipes used in fitness equipment have many bends and irregular shapes. These special-shaped pipes need to be clamped before welding.

[0003] Patent CN117655460A discloses a device for welding special-shaped groove heat pipes and a method for welding special-shaped groove heat pipes. The device for welding special-shaped groove heat pipes includes a wire feeding assembly, a welding actuator assembly, a heat pipe position adjustment assembly, a control assembly, a lifting screw guide rail, and a welding table; the heat pipe to be welded is clamped on the heat pipe position adjustment assembly, and the wire feeding assembly is used to provide welding wire to the welding actuator assembly; the liquid-filled pipe to be welded is installed on the welding actuator assembly, and the welding actuator assembly can adapt the height of the heat pipe to be welded through the lifting screw guide rail; the welding actuator assembly can weld the liquid-filled pipe to be welded and the welded heat pipe. The present invention can realize high-precision welding of special-shaped groove heat pipes and liquid-filled pipes. The operator only needs to clamp the liquid-filled pipe and the heat pipe on the corresponding fixture to realize the welding of the heat pipe and the liquid-filled pipe, thereby ensuring the welding quality and improving the qualified rate of automatic welding of heat pipes, and reducing the technical threshold and labor intensity of the operator;

[0004] The device still has defects when in use. First, the device can only clamp special-shaped pipes of one shape, but the special-shaped pipes used in fitness equipment have various shapes, which requires the use of many kinds of clamps for clamping operations. Second, in the past, pipes required handheld arc welding machines for welding, but the movement trajectory of handheld arc welding machines was not standardized, which easily led to uneven welding seams. Summary of the invention

[0005] The purpose of the present invention is to provide a special-shaped pipe welding device for the production of fitness equipment in view of the deficiencies in the prior art. When the device is in use, the staff pulls the pulling frame, the connecting frame and the movable block backwards through a pull ring, and then places the two special-shaped workpieces to be processed on the base plate and the docking plate respectively. When the staff releases the pull ring, the pulling frame, the connecting frame and the movable block apply pressure to lock the special-shaped workpiece through the clamping spring. When the locking bolt is loosened, the rotating inner liner can change the angle and lock it again. The cantilever beam and the rubber block at its end can be in contact with the irregular side wall of the special-shaped workpiece. All the cantilever beams and the rubber blocks at their ends can adjust the angle, which can adapt to special-shaped workpieces of various shapes, thereby solving the problems mentioned in the background technology.

[0006] In order to solve the above problems, the present invention provides the following technical solutions: a special-shaped pipe welding device for the production of fitness equipment, comprising a base plate and a docking plate, wherein the base plate is fixedly arranged, the docking plate is movably arranged, and a slide rail mechanism is arranged at the bottom of the docking plate; a welding table is arranged between the base plate and the docking plate, a surrounding welding mechanism is arranged on the welding table, and a clamp mechanism is arranged at the top of the base plate and the docking plate; the clamp mechanism comprises a fixed block and a movable block in a straight line array, the fixed block is fixedly connected to the top surface of the base plate, and the The movable block and the top surface of the base plate are movably arranged, the top of the base plate is provided with a clamping groove matching the movable block, the movable block slides and inserts inside the clamping groove, and the bottom of the movable block is provided with a propulsion mechanism; the tops of the fixed block and the movable block are both provided with positioning cross tubes, the insides of the positioning cross tubes are both slidably provided with clamping rods, the ends of the clamping rods are provided with interference components, and a special-shaped workpiece is provided in the middle of the two rows of interference components, and the top of the positioning cross tube is provided with a positioning bolt, and the end of the positioning bolt locks the side wall of the clamping rod.

[0007] When in use, the two special-shaped workpieces to be processed are placed on the base plate and the docking plate respectively, one row of the resistance components is fixed, and the other row of the resistance components can move toward the fixed block at the top of the movable block until the two rows of resistance components clamp the two sides of the special-shaped pipe, and the docking plate approaches the base plate along the slide rail mechanism until the ports of the two special-shaped workpieces are merged together, and the surrounding welding mechanism is used to weld the welds of the ports of the special-shaped workpieces.

[0008] Furthermore, the slide rail mechanism includes two guide rails fixedly arranged at the bottom of the docking plate, and a sliding block matching the guide rails is arranged at the bottom of the docking plate.

[0009] When in use, after two special-shaped workpieces are fixed on the base plate and the docking plate respectively, the staff manually pushes the docking plate toward the base plate, and the docking plate will slide in a straight line along the track of the guide rail until the ports of the two special-shaped workpieces fit together.

[0010] Furthermore, the propulsion mechanism includes a connecting frame connected to the bottom end of the movable block, a pulling frame is provided at the bottom end of the connecting frame, a pull ring is provided at the end of the pulling frame, and the pulling frame is connected to the elastic pressing mechanism.

[0011] When in use, the staff pulls the pulling frame, connecting frame and movable block backwards through the pull ring, and then places the two special-shaped workpieces to be processed on the base plate and the docking plate respectively, and then pushes the pulling frame, connecting frame and movable block back. The interference components on the top of the movable block and the fixed block can clamp the two sides of the special-shaped pipe.

[0012] Furthermore, the elastic pressing mechanism includes a reset plate fixed on the bottom surface of the base plate, a guide rod is provided on the side wall of the reset plate, a socket matching the guide rod is provided in the middle of the pulling frame, and a clamping spring is mounted on the outer side of the pulling frame, one end of the clamping spring is fixedly connected to the side wall of the reset plate, and the other end of the clamping spring is fixedly connected to the side wall of the pulling frame.

[0013] During use, when the worker loosens the pull ring, the pulling frame, the connecting frame and the movable block apply pressure to lock the special-shaped workpiece through the clamping spring.

[0014] Furthermore, the resistance assembly includes a rotating tube at the end of the clamping rod, a cantilever rod is rotatably arranged inside the rotating tube, a rubber block is arranged at the outer end of the cantilever rod, and a disassembly mechanism inserted into the rotating tube is arranged at the inner end of the cantilever rod.

[0015] When in use, the cantilever beam rod and the rubber block at its end can contact the irregular side wall of the special-shaped workpiece, and the angle of all the cantilever beam rods and the rubber block at their end can be adjusted, so that it can adapt to various shapes of special-shaped workpieces.

[0016] Furthermore, the disassembly and replacement mechanism includes a block at the inner end of the cantilever beam rod, a rotating inner shell is rotatably arranged inside the rotating tube, a threaded hole is arranged on the side wall of the rotating tube, a locking bolt is rotatably arranged inside the threaded hole, the end of the locking bolt abuts against the outer wall of the rotating inner shell, a square hole is arranged inside the rotating inner shell, and the block is inserted into the square hole inside the rotating inner shell.

[0017] During use, when the locking bolt is loosened, the inner liner can be rotated to change the angle and lock it again. If the cantilever rod and the rubber block at its end need to be replaced with different models, just pull the block up and pull it out.

[0018] Furthermore, the surround welding mechanism includes an insertion opening at the center position of the welding table, the outer side of the insertion opening is provided with a notch double guide groove, two insertion rods are movably inserted inside the notch double guide groove, the inner end of the insertion rod is provided with a rotating wheel that fits with the inner side wall of the notch double guide groove, an arc welding machine table is fixedly installed on the outer end of the insertion rod, an arc welding machine is movably arranged on the side wall of the arc welding machine table, the arc welding machine is connected to the elastic propulsion assembly, and the butt joint of the two special-shaped workpieces is at the position of the arc emission head of the arc welding machine.

[0019] When in use, the staff holds the push handle and starts to push the arc welding machine. The arc welding machine will slide and weld along the track of the double guide grooves of the notch, so that the movement track of the arc welding machine is relatively regular.

[0020] Furthermore, the elastic propulsion assembly includes a sliding groove on the side wall of the arc welding machine, the arc welding machine is provided with a sliding plate that is slidably arranged with the sliding groove, the top of the arc welding machine is provided with a pressure spring, the top of the pressure spring is provided with a spring sheet, the spring sheet is fixedly connected to the top surface of the arc welding machine, and propulsion handles are evenly arranged on the left and right side walls of the arc welding machine.

[0021] When in use, before the two special-shaped workpiece ports are connected, the staff will first lift the arc welder up a distance, and then release the arc welder after the two special-shaped workpiece ports are connected. The arc welder applies elastic force to the arc welder through the pressure spring on the top, so that the welding head of the arc welder fits tightly on the welds of the two special-shaped workpiece ports.

[0022] Compared with the prior art, the embodiments of the present application have the following beneficial effects:

[0023] Firstly, when the device is in use, the staff pulls the pulling frame, the connecting frame and the movable block backwards through the pull ring, and then places the two special-shaped workpieces to be processed on the base plate and the docking plate respectively. When the staff releases the pull ring, the pulling frame, the connecting frame and the movable block apply pressure to lock the special-shaped workpiece through the clamping spring. When the locking bolt is loosened, the rotating inner liner can change the angle and lock it again. The cantilever beam and the rubber block at its end can be in contact with the irregular side wall of the special-shaped workpiece. The angle of all cantilever beams and the rubber blocks at their ends can be adjusted, which can adapt to special-shaped workpieces of various shapes.

[0024] Secondly, before the two special-shaped workpiece ports are connected, the staff will lift the arc welding machine up for a distance, and then release the arc welding machine after the two special-shaped workpiece ports are connected. The arc welding machine applies elastic force to the arc welding machine through the pressure spring on the top, so that the welding head of the arc welding machine fits tightly against the welds of the two special-shaped workpiece ports. The staff then holds the pushing handle and starts pushing the arc welding machine. The arc welding machine will slide and weld along the track of the double guide grooves of the notch, and the movement track of the arc welding machine will be relatively regular. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the front view of the present invention.

[0026] Figure 2 It is a schematic diagram of a side view of the present invention.

[0027] Figure 3 For the present invention Figure 2 A partial enlarged view of .

[0028] Figure 4 It is a schematic diagram of an arc welding machine of the present invention.

[0029] Figure 5 It is a schematic diagram of a special-shaped workpiece of the present invention.

[0030] Figure 6 For the present invention Figure 5 A partial enlarged view of B.

[0031] Figure 7 It is a schematic diagram of the base plate of the present invention when viewed from bottom up.

[0032] Figure 8 For the present invention Figure 7 A partial enlarged view of C.

[0033] Fig. 9 Schematic diagram of the clamping rod of the present invention.

[0034] Description of reference numerals:

[0035] Base plate 1, docking plate 2, guide rail 3, welding table 4, insertion port 401, notch double guide slot 402, arc welding machine table 403, sliding slot 404, arc welding machine 405, sliding piece 406, pushing handle 407, pressure spring 408, spring piece 409, insertion rod 410, special-shaped workpiece 5, fixing block 6, positioning bolt 601, movable block 7, connecting frame 701, pulling frame 702, pull ring 703, reset plate 704, guide rod 705, clamping spring 706, clamping notch 8, clamping rod 9, rotating tube 901, locking bolt 902, rotating liner 903, block 904, cantilever beam rod 905, rubber block 906. DETAILED DESCRIPTION

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0037] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0038] The present invention provides a special-shaped pipe welding device for producing fitness equipment, such as Figure 1-9 As shown, it includes a base plate 1 and a docking plate 2, the base plate 1 is fixedly arranged, the docking plate 2 is movably arranged, and a slide rail mechanism is arranged at the bottom of the docking plate 2; a welding table 4 is arranged between the base plate 1 and the docking plate 2, and a surrounding welding mechanism is arranged on the welding table 4, and a clamp mechanism is arranged at the top of the base plate 1 and the docking plate 2; the clamp mechanism includes a fixed block 6 and a movable block 7 in a straight line array, the fixed block 6 is fixedly connected to the top surface of the base plate 1, the movable block 7 is movably arranged to the top surface of the base plate 1, and the The top of the base plate 1 is provided with a clamping groove 8 matching the movable block 7, and the movable block 7 is slidably inserted into the inside of the clamping groove 8, and the bottom of the movable block 7 is provided with a propulsion mechanism; the tops of the fixed block 6 and the movable block 7 are provided with positioning transverse tubes, and the insides of the positioning transverse tubes are slidably provided with clamping rods 9, and the ends of the clamping rods 9 are provided with interference components, and a special-shaped workpiece 5 is provided in the middle of the two rows of interference components, and the top of the positioning transverse tube is provided with a positioning bolt 601, and the end of the positioning bolt 601 locks the side wall of the clamping rod 9.

[0039] In this embodiment, two special-shaped workpieces 5 to be processed are placed on the base plate 1 and the docking plate 2 respectively, one row of the interference components is fixed, and the other row of the interference components can move toward the fixed block 6 at the top of the movable block 7 until the two rows of interference components clamp the two sides of the special-shaped workpiece 5, and the docking plate 2 approaches the base plate along the slide rail mechanism until the ports of the two special-shaped workpieces 5 are merged together, and the surrounding welding mechanism performs welding operations on the welds of the ports of the special-shaped workpieces 5.

[0040] In a further embodiment of the present invention, Figure 1-2 As shown, the slide rail mechanism includes two guide rails 3 fixedly arranged at the bottom of the docking plate 2, and a sliding block matching the guide rails 3 is arranged at the bottom of the docking plate 2.

[0041] In this embodiment, after the two special-shaped workpieces 5 are fixed on the base plate and the docking plate respectively, the staff manually pushes the docking plate 2 toward the base plate 1, and the docking plate 2 will slide in a straight line along the track of the guide rail 3 until the ports of the two special-shaped workpieces 5 are fitted together.

[0042] In a further embodiment of the present invention, Figure 1-8 As shown, the propulsion mechanism includes a connecting frame 701 connected to the bottom end of the movable block 7, a pulling frame 702 is provided at the bottom end of the connecting frame 701, a pull ring 703 is provided at the end of the pulling frame 702, and the pulling frame 702 is connected to the elastic pressing mechanism.

[0043] In this embodiment, the staff pulls the pulling frame 702, the connecting frame 701 and the movable block 7 backwards through the pull ring, and then places the two special-shaped workpieces 5 to be processed on the base plate 1 and the docking plate 2 respectively, and then pushes the pulling frame 702, the connecting frame 701 and the movable block 7 back, and the interference components at the top of the movable block 7 and the fixed block 6 can clamp the two sides of the special-shaped workpiece 5.

[0044] In a further embodiment of the present invention, Figure 1-8 As shown, the elastic pressing mechanism includes a reset plate 704 fixed on the bottom surface of the base plate 1, a guide rod 705 is arranged on the side wall of the reset plate 704, a socket matching the guide rod 705 is arranged in the middle of the pulling frame 702, and a clamping spring 706 is sleeved on the outer side of the pulling frame 702, one end of the clamping spring 706 is fixedly connected to the side wall of the reset plate 704, and the other end of the clamping spring 706 is fixedly connected to the side wall of the pulling frame 702.

[0045] In this embodiment, when the staff releases the pull ring, the pulling frame 702 , the connecting frame 701 and the movable block 7 apply pressure to lock the special-shaped workpiece 5 through the clamping spring 706 .

[0046] In a further embodiment of the present invention, Figure 1-9 As shown, the resistance assembly includes a rotating tube 901 at the end of the clamping rod 9, a cantilever rod 905 is rotatably arranged inside the rotating tube 901, a rubber block 906 is arranged at the outer end of the cantilever rod 905, and a disassembly mechanism inserted into the rotating tube 901 is arranged at the inner end of the cantilever rod 905.

[0047] In this embodiment, the cantilever rod 905 and the rubber block 906 at its end can contact the irregular side wall of the special-shaped workpiece 5, and all the cantilever rods 905 and the rubber block 906 at its end can adjust the angle, so as to adapt to various shapes of special-shaped workpieces 5.

[0048] In a further embodiment of the present invention, Figure 1-9 As shown, the disassembly and replacement mechanism includes a block 904 at the inner end of the cantilever rod 905, a rotating inner liner 903 is rotatably arranged inside the rotating tube 901, a threaded hole is arranged on the side wall of the rotating tube 901, a locking bolt 902 is rotatably arranged inside the threaded hole, the end of the locking bolt 902 abuts against the outer wall of the rotating inner liner 903, a square hole is arranged inside the rotating inner liner 903, and the block 904 is inserted into the square hole inside the rotating inner liner 903.

[0049] In this embodiment, when the locking bolt 902 is loosened, the inner liner 903 can be rotated to change the angle and locked again. If the cantilever rod 902 and the rubber block 906 at its end need to be replaced with different models, the block 904 can be directly pulled up and pulled out.

[0050] In a further embodiment of the present invention, Figure 1-4 As shown, the surround welding mechanism includes an insertion opening 401 at the center of the welding table 4, and a notch double guide groove 402 is arranged on the outer side of the insertion opening 401, and two insertion rods 410 are movably inserted inside the notch double guide groove 402, and the inner end of the insertion rod 410 is provided with a rotating wheel that fits with the inner wall of the notch double guide groove 402, and an arc welding machine table 403 is fixedly installed on the outer end of the insertion rod 410, and an arc welding machine 405 is movably arranged on the side wall of the arc welding machine table 403, and the arc welding machine 405 is connected to the elastic propulsion assembly, and the butt joint of the two special-shaped workpieces 5 is at the position of the arc emission head of the arc welding machine 405.

[0051] In this embodiment, the staff manually pushes the arc welding machine 403, and the arc welding machine 403 slides and welds along the track of the double guide grooves 402 of the notch, so that the movement track of the arc welding machine 405 is relatively regular.

[0052] In a further embodiment of the present invention, Figure 1-4 As shown, the elastic propulsion component includes a sliding groove 404 on the side wall of the arc welding machine platform 403, and the arc welding machine 405 is provided with a sliding plate 406 that is slidably arranged with the sliding groove 404. The top of the arc welding machine 405 is provided with a pressure spring 408, and the top of the pressure spring 408 is provided with a spring piece 409. The spring piece 409 is fixedly connected to the top surface of the arc welding machine platform 403, and the left and right side walls of the arc welding machine platform 403 are evenly provided with propulsion handles 407.

[0053] In this embodiment, before the two special-shaped workpieces 5 are butt-jointed, the staff first lifts the arc welder 405 up for a distance, and then releases the arc welder 405 after the two special-shaped workpieces 5 are butt-jointed. The arc welder 405 applies elastic force to the arc welder 405 through the pressure spring 408 at the top, so that the welding head of the arc welder 405 fits tightly against the welds of the two special-shaped workpieces 5.

[0054] It should be noted that, for the above-mentioned embodiments, for the sake of simplicity, they are all described as a series of action combinations, but those skilled in the art should know that the present invention is not limited by the described order of actions, because according to the present invention, some steps may be performed in other orders or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present invention.

[0055] In the several embodiments provided in the present application, it should be understood that the disclosed devices can be implemented in other ways. For example, the device embodiments described above are merely schematic, such as the division of the above-mentioned units. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or communication connection shown or discussed can be through some interfaces, and the indirect coupling or communication connection between devices or units can be in the form of telecommunication or other forms.

[0056] The units described above as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0057] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the scope of protection of the invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the present invention according to the circumstances without conflict, without making creative work, so as to obtain different other technical solutions that do not deviate from the concept of the present invention in essence, and these technical solutions also belong to the scope of protection of the present invention.

Claims

1. A special-shaped pipe welding device for producing fitness equipment, characterized in that: It comprises a base plate (1) and a docking plate (2), wherein the base plate (1) is fixedly arranged, and the docking plate (2) is movably arranged, and a slide rail mechanism is arranged at the bottom of the docking plate (2); A welding platform (4) is arranged between the base plate (1) and the butt joint plate (2), a surrounding welding mechanism is arranged on the welding platform (4), and a clamping mechanism is arranged at the top end of the base plate (1) and the butt joint plate (2); The clamp mechanism comprises a fixed block (6) and a movable block (7) in a straight-line array, the fixed block (6) being fixedly connected to the top surface of the base plate (1), the movable block (7) and the top surface of the base plate (1) being movably arranged, the top end of the base plate (1) being provided with a clamping notch (8) matching the movable block (7), the movable block (7) being slidably inserted into the inside of the clamping notch (8), and the bottom of the movable block (7) being provided with a propulsion mechanism; The top ends of the fixed block (6) and the movable block (7) are both provided with positioning transverse tubes, the interiors of the positioning transverse tubes are both slidably provided with clamping rods (9), the ends of the clamping rods (9) are provided with abutment components, a special-shaped workpiece (5) is provided in the middle of the two rows of abutment components, the top ends of the positioning transverse tubes are provided with positioning bolts (601), and the ends of the positioning bolts (601) lock the side walls of the clamping rods (9).

2. The special-shaped pipe welding device for producing fitness equipment according to claim 1, characterized in that: The slide rail mechanism comprises two guide rails (3) fixedly arranged at the bottom of the docking plate (2), and a sliding block matching the guide rails (3) is arranged at the bottom of the docking plate (2).

3. The special-shaped pipe welding device for fitness equipment production according to claim 1, characterized in that: The propulsion mechanism comprises a connecting frame (701) connected to the bottom end of the movable block (7), a pulling frame (702) is arranged at the bottom end of the connecting frame (701), a pull ring (703) is arranged at the end of the pulling frame (702), and the pulling frame (702) is connected to the elastic pressing mechanism.

4. The special-shaped pipe welding device for producing fitness equipment according to claim 3, characterized in that: The elastic pressing mechanism comprises a reset plate (704) fixed on the bottom surface of the base plate (1); a guide rod (705) is arranged on the side wall of the reset plate (704); a socket matching the guide rod (705) is arranged in the middle of the pulling frame (702); a clamping spring (706) is sleeved on the outer side of the pulling frame (702); one end of the clamping spring (706) is fixedly connected to the side wall of the reset plate (704); and the other end of the clamping spring (706) is fixedly connected to the side wall of the pulling frame (702).

5. The special-shaped pipe welding device for producing fitness equipment according to claim 1, characterized in that: The abutment assembly comprises a rotating tube (901) at the end of a clamping rod (9), a cantilever rod (905) is rotatably arranged inside the rotating tube (901), a rubber block (906) is arranged at the outer end of the cantilever rod (905), and a disassembly mechanism inserted into the rotating tube (901) is arranged at the inner end of the cantilever rod (905).

6. The special-shaped pipe welding device for producing fitness equipment according to claim 5, characterized in that: The disassembly and replacement mechanism comprises a block (904) at the inner end of the cantilever rod (905); a rotating inner liner (903) is rotatably arranged inside the rotating tube (901); a threaded hole is arranged on the side wall of the rotating tube (901); a locking bolt (902) is rotatably arranged inside the threaded hole; the end of the locking bolt (902) abuts against the outer wall of the rotating inner liner (903); a square hole is arranged inside the rotating inner liner (903); and the block (904) is inserted into the square hole inside the rotating inner liner (903).

7. The special-shaped pipe welding device for producing fitness equipment according to claim 1, characterized in that: The surrounding welding mechanism comprises an insertion opening (401) at the center of a welding platform (4), a notch double guide groove (402) is arranged on the outer side of the insertion opening (401), two insertion rods (410) are movably inserted inside the notch double guide groove (402), the inner end of the insertion rod (410) is provided with a rotating wheel that fits with the inner side wall of the notch double guide groove (402), an arc welding machine (403) is fixedly installed on the outer end of the insertion rod (410), an arc welding machine (405) is movably arranged on the side wall of the arc welding machine (403), and the arc welding machine (405) is connected to a spring propulsion component, and the butt joint of the two special-shaped workpieces (5) is located at the position of the arc emission head of the arc welding machine (405).

8. The special-shaped pipe welding device for producing fitness equipment according to claim 7, characterized in that: The elastic propulsion component comprises a sliding groove (404) on the side wall of the arc welding machine (403); the arc welding machine (405) is provided with a sliding plate (406) slidably arranged with the sliding groove (404); the top of the arc welding machine (405) is provided with a pressure spring (408); the top of the pressure spring (408) is provided with a spring sheet (409); the spring sheet (409) is fixedly connected to the top surface of the arc welding machine (403); and propulsion handles (407) are evenly arranged on the left and right side walls of the arc welding machine (403).

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