Sports equipment welding device and welding method thereof

Abstract

The invention relates to the field of sports equipment welding, and discloses a sports equipment welding device and a welding method thereof.The sports equipment welding device comprises a support, a second air cylinder and a rotating assembly for driving the second air cylinder to rotate are arranged at the top of the support, a supporting frame is arranged at the telescopic end of the second air cylinder, and two welding frames are arranged on the inner side of the supporting frame; the two welding frames form a complete circle; the protective eaves are arranged on the two sides of the welding frame, an effective barrier can be formed in the welding process, most of splashing metal particles are prevented from escaping from the side face, splashing objects can be guided to the direction away from a welding seam due to the inclination angle of the protective eaves, and even if a small amount of splashing objects break through blocking of the protective eaves, the welding seam can be prevented from being splashed. When the welding line is welded, the welding line can be further guided to the position far away from the key welding area due to the conical structure of the protective eave, pollution to the surface of the welding line is effectively reduced, additional damage to the welding line caused by secondary splashing is avoided, the welding quality is further improved, and the production efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the field of welding of sports equipment, and particularly to a welding device for sports equipment and a welding method thereof. Background Art

[0002] When manufacturing sports equipment, the welding process is a key link for connecting structural components such as metal pipe fittings and frames. Its quality directly affects the stability and service life of the equipment. At the same time, with the increasing demand for lightweight design, many modern sports equipment use carbon steel or aluminum alloy materials with a wall thickness of less than 1.5 mm to reduce weight and improve performance, such as bicycle frames, handles of fitness equipment, etc. However, the existing welding devices still have the following problems when welding welding materials with a wall thickness of less than 1.5 mm:

[0003] Manual arc welding is one of the most common welding methods and is applicable to various metal materials. However, the implementation process of manual arc welding highly depends on the operating experience of the operator, which in turn leads to unstable welding quality. Especially for thin-walled materials, problems such as deformation or burn-through are likely to occur;

[0004] Gas shielded welding often uses inert gas to protect the welding area. The gas nozzle is usually designed as an annular structure surrounding the welding head, aiming to evenly distribute the inert shielding gas throughout the welding area. However, as the welding head moves, the just-welded part will be quickly exposed to the air. At this time, the remaining inert gas can only stay in the welding area for a short time and cannot effectively protect the newly formed weld. Impurities in the air are likely to enter the weld, thus easily generating an oxidation reaction and forming an oxide layer, which in turn affects the welding quality. To ensure the protection effect, a larger nozzle is required to spray more gas. Although it can provide a wider protection range, it will also increase the gas consumption. Due to the small thickness of thin-walled materials, their heat dissipation is fast, and the time for the weld to cool from the molten state to room temperature is very short. If the shielding gas cannot continuously provide effective coverage during this period, the weld will be quickly exposed to the air, increasing the risk of oxidation;

[0005] To solve the above problems, a welding device for sports equipment and a welding method thereof are now proposed.

[0006] The above information disclosed in this background art is only used to increase the understanding of the background art of the present invention. Therefore, it may include prior art that is not known to those of ordinary skill in the art. Summary of the Invention

[0007] To solve the above problems, the present invention provides a welding device for sports equipment and a welding method thereof.

[0008] The welding device for sports equipment and the welding method provided by the present invention adopt the following technical solutions:

[0009] A welding device for sports equipment, comprising a bracket. A second cylinder and a rotating assembly for driving the second cylinder to rotate are provided at the top of the bracket. A support frame is provided at the telescopic end of the second cylinder. Two welding frames are provided inside the support frame. The two welding frames form a complete circle. A telescopic welding head and a welding assembly for driving the welding head to rotate along the axis of the welding frame are provided inside the welding frame. Two arc-shaped clamping plates one, arc-shaped clamping plates two, U-shaped clamping plates one, U-shaped clamping plates two and a driving assembly for driving the two arc-shaped clamping plates one or arc-shaped clamping plates two or U-shaped clamping plates one or U-shaped clamping plates two to approach or move away from each other simultaneously are provided inside the support frame. A plug rod for limiting the two arc-shaped clamping plates one, arc-shaped clamping plates two, U-shaped clamping plates one, U-shaped clamping plates two and a limit release assembly for releasing the limit of the plug rod are provided at the top of the support frame. The driving assembly and the limit release assembly move synchronously. When the limit release assembly releases the limit of the plug rod and any two of the arc-shaped clamping plates one or arc-shaped clamping plates two or U-shaped clamping plates one or U-shaped clamping plates two, the driving assembly drives any two of the arc-shaped clamping plates one or arc-shaped clamping plates two or U-shaped clamping plates one or U-shaped clamping plates two to approach or move away from each other. The two arc-shaped clamping plates one, arc-shaped clamping plates two, U-shaped clamping plates one, U-shaped clamping plates two are respectively located on both sides of the welding frame.

[0010] Preferably, the welding assembly includes a rotating frame, a fixed rod, a guide wheel, a fixed frame, a fifth gear, a fifth motor, and an outer gear ring two. The rotating frame rotates inside the welding frame. A guide groove is formed on the surface of the rotating frame. The fixed rod and the fixed frame are both fixed on the inner wall of the welding frame. The guide wheel rotates at the bottom of the fixed rod. The guide wheel can roll in the guide groove. The fifth gear rotates on the fixed frame. The fifth motor is fixed on one side of the fixed frame. The rotor end of the fifth motor is fixed to the fifth gear. The outer gear ring two is fixed on the rotating frame. The fifth gear meshes with the outer gear ring two. An electric push rod three is provided on the inner surface of the rotating frame. The telescopic end of the electric push rod three is fixed to the welding head. Protective eaves are provided on both sides of the welding frame.

[0011] Preferably, the driving assembly includes a slider, a third motor, a third bidirectional lead screw, a guide rod, a sliding block, a connecting frame, a first electric push rod, a second gear, a third gear, a second mounting frame, and a fourth motor. A chute is formed inside the support frame, and the second bidirectional lead screw rotates in the chute. There are two sets of sliders that slide in the chute, and the second bidirectional lead screw is threadedly connected to the sliders. The third motor is fixed to one side of the support frame, and the rotor end of the third motor is fixed to the second bidirectional lead screw. The third bidirectional lead screw rotates between one set of the sliders, and the guide rod is fixed between the other set of the sliders. The sliding block is threadedly connected to the third bidirectional lead screw and can slide on the surface of the guide rod. The connecting frame is perpendicular to the third bidirectional lead screw and the guide rod. A sliding groove is formed at the bottom of the connecting frame, and the sliding block slides in the sliding groove. The first electric push rod is fixed to the bottom of the sliding block, and the telescopic end of the first electric push rod is inserted and matched with the top of the first arc-shaped clamping plate, the second arc-shaped clamping plate, the first U-shaped clamping plate, or the second U-shaped clamping plate. The second gear and the third gear both rotate on one side of one set of the sliders. The second gear is fixed to one end of the third bidirectional lead screw. The second mounting frame is fixed to one side of one set of the sliders. The fourth motor is fixed to one side of the second mounting frame, and the rotor end of the fourth motor is fixed to the third gear. The second gear meshes with the third gear.

[0012] Preferably, the limit release assembly includes a connecting rod, a connecting shaft, a fourth gear, a rack, a second electric push rod, a cam, and a connecting plate. The bottom of the connecting rod is fixed to the top of the slider. The inside of the connecting rod is a cavity. The cam rotates inside the connecting rod. One end of the connecting shaft passes through the connecting rod and is fixed to the cam. The fourth gear rotates on one side of the connecting rod and is fixed to one end of the connecting shaft. The rack slides on one side of the connecting rod. The second electric push rod is fixed to one side of the connecting rod, and the telescopic end of the second electric push rod is fixed to the rack. The rack meshes with the fourth gear. The connecting plate is fixed to the insertion rod. The insertion rod slides on the support frame. A plurality of sliding rods are slidably arranged on both sides of the support frame. The plurality of sliding rods are respectively fixed to one side of the first arc-shaped clamping plate, the second arc-shaped clamping plate, the first U-shaped clamping plate, and the second U-shaped clamping plate. The sliding rods are perpendicular to the insertion rod and are inserted and matched. When the cam abuts against the bottom of the connecting plate, the insertion rod slides upward to disengage from the sliding rod.

[0013] Preferably, the tops of the first arc-shaped clamping plate, the second arc-shaped clamping plate, the first U-shaped clamping plate, and the second U-shaped clamping plate are all provided with insertion holes that are inserted and matched with the telescopic end of the first electric push rod. When one side of the first arc-shaped clamping plate, the second arc-shaped clamping plate, the first U-shaped clamping plate, and the second U-shaped clamping plate is attached to the inside of the support frame, the connecting line of the centers of the insertion holes at the tops of the first arc-shaped clamping plate, the second arc-shaped clamping plate, the first U-shaped clamping plate, and the second U-shaped clamping plate is parallel to the inner edge line of the cross-section of the support frame.

[0014] Preferably, plug holes adapted for plugging with the plug rods are formed at the tops of the plurality of sliding rods. When the connecting line of the centers of the insertion holes at the tops of the first arc-shaped clamping plate, the second arc-shaped clamping plate, the first U-shaped clamping plate, and the second U-shaped clamping plate is parallel to the inner edge line of the cross-section of the support frame, the connecting line of the centers of the plurality of plug holes is parallel to the inner edge line of the cross-section of the support frame, and at the same time, the outer diameters of the plurality of plug holes are tangent to the outer edge line of the cross-section of the support frame. The length cross-sections of the plurality of sliding rods are stepped.

[0015] Preferably, the rotating assembly includes an outer gear ring one, a gear one, a mounting frame one, and a motor two. The outer gear ring one and the gear one are both rotatably arranged on the top of the bracket. The outer gear ring one is fixed to the second cylinder. The mounting frame one is fixed to the top of the bracket. The motor two is fixed to the top of the mounting frame one. The rotor end of the motor two is fixed to the gear one. The gear one meshes with the outer gear ring one.

[0016] Preferably, a first cylinder is provided on both sides of the bracket. A clamping seat is provided at the telescopic end of each first cylinder. Two clamping plates are slidably arranged in the clamping seat. A first bidirectional lead screw is rotatably arranged in the clamping seat. The two clamping plates are threadedly connected to the first bidirectional lead screw. A motor one is fixed to one side of the clamping seat. The rotor end of the motor one is fixed to the first bidirectional lead screw. Through openings are formed on both sides of the bracket. When the welding frame rotates 90 degrees along the axis of the outer gear ring one, the inner diameters of the welding frame are communicated with both sides of the bracket through the through openings.

[0017] Preferably, pulleys are provided at the bottom of the bracket.

[0018] A welding method for sports equipment, applicable to the welding device for sports equipment described in any one of the above, includes the following operating steps:

[0019] S1. Push the bracket and move the bracket to the welding position under the action of the pulleys;

[0020] S2: Select one of the arc splint 1, arc splint 2, 匚-shaped splint 1, and 匚-shaped splint 2 according to the shape of the welding material, start the motor 3 to rotate the bidirectional screw rod 2, and under the guidance of the slide groove, the two sets of sliders drive the bidirectional screw rod 3, the guide rod, the sliding block, and the electric push rod 1 on it to move closer or farther from each other along the length direction of the bidirectional screw rod 2 to the top of the arc splint 1 or the arc splint 2 or the 匚-shaped splint 1 or the 匚-shaped splint 2, start the electric push rod 2 to extend and push the rack to slide and drive the gear 4 and its connecting shaft and cam to rotate until they are against the bottom of the connecting plate, thereby driving a plug The rod rises and disengages from the corresponding sliding rod, and the electric push rod 1 is started to extend until it is plugged into the socket above the arc-shaped splint 1 or the arc-shaped splint 2 or the 匚-shaped splint 1 or the 匚-shaped splint 2, and the longer welding material is respectively inserted into the welding frame from both sides of the welding frame. At this time, the motor 4 is started to make the gear 3 drive the gear 2 and the two-way screw rod 3 to rotate, and under the guiding effect of the guide rod and the connecting effect of the sliding block, the two sliding blocks drive the arc-shaped splint 1 or the arc-shaped splint 2 or the 匚-shaped splint 1 or the 匚-shaped splint 2 to approach each other until they are in contact with the surface of the welding material, and are clamped and fixed;

[0021] S3: Start the motor 5 to make the gear 5 drive the outer gear ring 2 and the rotating frame to rotate in the welding frame, thereby driving the welding head to rotate to perform welding work, and at the same time start the electric push rod 3 to adjust the distance between the welding head and the welding interface in real time to complete the welding of longer welding materials;

[0022] S4: Start the second motor to make the first gear drive the first outer gear ring to rotate, and then drive the second cylinder and the support frame at the telescopic end to rotate 90 degrees to connect with the through-hole, and pass the shorter welding materials through the through-holes on both sides of the support frame respectively, and start the first motor to make the first bidirectional screw rotate, and under the guidance of the inner cavity of the clamping seat, the two clamping plates on both sides are respectively moved closer to each other until they are in contact with the surface of the welding material, so as to clamp and fix it;

[0023] S5: Start the motor 5 again to make the gear 5 drive the outer gear ring 2 and the rotating frame to rotate in the welding frame, thereby driving the welding head to rotate to perform welding work, and at the same time start the electric push rod 3 to adjust the distance between the welding head and the welding interface in real time to complete the welding of shorter welding materials;

[0024] S6: Arrange the longer welding material welded by S3 and the shorter welding material welded by S5, and weld the welding material that needs further welding again through the method of S1 to S5.

[0025] In summary, the present invention includes the following beneficial technical effects:

[0026] 1. By setting up a welding frame and having a retractable welding head and a welding component inside the welding frame that drives the welding head to rotate around the axis of the welding frame, two welding frames form a complete circular structure, which can adapt to workpieces of different shapes and sizes. The rotating frame is installed inside the welding frame and can rotate around the axis of the welding frame driven by Motor Five. Guide grooves are provided on the surface of the rotating frame, and smooth rotation is achieved by the rolling of guide wheels at the bottom of the fixed rod. Compared with the related technology, the rotating frame drives the welding head to rotate inside the welding frame, which can not only cover the weld seam in all directions, ensure the continuity and consistency of the weld seam during the welding process, but also achieve a more uniform heating distribution during the welding process, thereby reducing the risk of local overheating, and is conducive to avoiding the situation where the material properties of thin-walled materials decline or the materials are deformed and burned through due to local temperature fluctuations;

[0027] 2. By setting up protective eaves on both sides of the welding frame, the protective eaves are in a tapered shape that shrinks outward, that is, gradually narrows from the inside of the welding frame to the outside. Together with the circular shape of the welding frame, it forms a relatively enclosed welding environment. Compared with the related technology, the tapered structure of the protective eaves can guide the inert gas to the welding area, making it easier for the gas to concentrate in the welding area, reducing the possibility of the gas diffusing around, thereby improving the effective utilization rate of the gas. At the same time, the inclination angle of the protective eaves forms a physical barrier, which can effectively prevent the outside air from entering the welding area. Even if a small amount of air tries to enter, it will be guided away from the weld seam due to the blockage of the protective eaves, effectively reducing the occurrence of oxidation reactions and enhancing the gas protection effect. The circular shape of the welding frame provides a continuous and recyclable flow path for the flowing gas inside the welding frame, further prolonging the residence time of the inert gas, and can comprehensively and continuously protect the weld seam of thin-walled materials, which is conducive to improving the welding quality;

[0028] 3. By setting up protective eaves on both sides of the welding frame, it can also form an effective barrier during the welding process to prevent most of the splashed metal particles from escaping from the side. Due to its inclined angle, the splashes can be guided away from the weld seam. Even if a small amount of splashes break through the blockage of the protective eaves, they will be further guided to a position away from the key welding area due to the tapered structure of the protective eaves. Compared with the related technology, it not only effectively reduces the pollution of the weld seam surface, but also avoids additional damage to the weld seam caused by secondary splashes, further improving the welding quality, and is conducive to improving the production efficiency;

[0029] 4. By setting the arc-shaped clamping plate one, arc-shaped clamping plate two, U-shaped clamping plate one, and U-shaped clamping plate two, and combining the synchronous movement and cooperation of the driving component and the limit release component, the position of the fixture can be flexibly adjusted according to the specific shape of the workpiece, enabling the fixture to fit the surface of the workpiece, increasing the contact area with the workpiece surface. Compared with the related technology, it can provide uniform and appropriate clamping force during the welding process, effectively reducing the deformation caused by local stress concentration or insufficient support. At the same time, the synchronous movement of the driving component and the limit release component can quickly and accurately adjust the position of the fixture, reducing the time cost of manual adjustment, and thus being conducive to improving production efficiency. Brief Description of the Drawings

[0030] Figure 1 is the overall structural schematic diagram of the application embodiment;

[0031] Figure 2 is Figure 1 the enlarged structural schematic diagram at A in

[0032] Figure 3 is the partial structural schematic diagram of the application embodiment;

[0033] Figure 4 is Figure 3 the enlarged structural schematic diagram at B in

[0034] Figure 5 is the structural schematic diagram of the bottom of the connecting frame of the application embodiment;

[0035] Figure 6 is the side view structural schematic diagram of the arc-shaped clamping plate one, arc-shaped clamping plate two, U-shaped clamping plate one, and U-shaped clamping plate two on one side of the application embodiment;

[0036] Figure 7 is the top view structural schematic diagram of the arc-shaped clamping plate one, arc-shaped clamping plate two, U-shaped clamping plate one, and U-shaped clamping plate two on one side of the application embodiment;

[0037] Figure 8 is the unfolded structural schematic diagram of the welding frame of the application embodiment;

[0038] Figure 9 is Figure 8 the enlarged structural schematic diagram at C in

[0039] Figure 10 is the structural schematic diagram of the clamping seat of the application embodiment.

[0040] Description of reference numerals: 1, bracket; 2, through port; 3, first cylinder; 4, clamping seat; 5, clamping plate; 6, first bidirectional lead screw; 7, first motor; 8, second cylinder; 9, first external gear ring; 10, first gear; 11, first mounting frame; 12, second motor; 13, support frame; 14, chute; 15, second bidirectional lead screw; 16, slider; 17, third motor; 18, third bidirectional lead screw; 19, guide rod; 20, sliding block; 21, connecting frame; 22, sliding groove; 23, first electric push rod; 24, first arc-shaped clamping plate; 25, second gear; 26, third gear; 27, second mounting frame; 28, fourth motor; 29, second arc-shaped clamping plate; 30, first U-shaped clamping plate; 31, second U-shaped clamping plate; 32, slide bar; 33, connecting rod; 34, connecting shaft; 35, fourth gear; 36, rack; 37, second electric push rod; 38, cam; 39, insertion rod; 40, connecting plate; 41, welding frame; 42, rotating frame; 43, third electric push rod; 44, welding head; 45, guide groove; 46, fixed rod; 47, guide wheel; 48, fixed frame; 49, fifth gear; 50, fifth motor; 51, second external gear ring; 52, protective eaves; 53, pulley. Detailed implementation manners

[0041] The following will further describe the present invention in detail in conjunction with the attached Figure 1 - attached Figure 10 drawings.

[0042] An embodiment of the present invention discloses a welding device for sports equipment. Refer to Figures 1 - 10 , a welding device for sports equipment and its welding method, including a bracket 1. A second cylinder 8 and a rotating assembly for driving the second cylinder 8 to rotate are provided at the top of the bracket 1. The rotating assembly includes a first external gear ring 9, a first gear 10, a first mounting frame 11, and a second motor 12. Both the first external gear ring 9 and the first gear 10 rotate on the top of the bracket 1. The first external gear ring 9 is fixed to the second cylinder 8. The first mounting frame 11 is fixed to the top of the bracket 1. The second motor 12 is fixed to the top of the first mounting frame 11. The rotor end of the second motor 12 is fixed to the first gear 10. The first gear 10 meshes with the first external gear ring 9. Starting the second motor 12 causes the first gear 10 to rotate. Under the meshing action of the first gear 10 and the first external gear ring 9, the first external gear ring 9, that is, the second cylinder 8 thereon, rotates. A support frame 13 is fixed to the telescopic end of the second cylinder 8, thereby realizing the rotational adjustment of the support frame 13;

[0043] On the inner side of the support frame 13, two welding frames 41 are fixed by bolts. The two welding frames 41 are close to each other to form a complete circle. Inside the welding frame 41, there is a welding head 44 and a welding component for driving the welding head 44 to rotate along the axis of the welding frame 41. The welding component includes a rotating frame 42, a fixed rod 46, a guide wheel 47, a fixed frame 48, a fifth gear 49, a fifth motor 50, and an outer gear ring two 51. The rotating frame 42 rotates inside the welding frame 41. A guide groove 45 is formed on the surface of the rotating frame 42. The fixed rod 46 and the fixed frame 48 are both fixed on the inner wall of the welding frame 41. The guide wheel 47 rotates at the bottom of the fixed rod 46, and the guide wheel 47 can roll in the guide groove 45. The fifth gear 49 rotates on the fixed frame 48. The fifth motor 50 is fixed on one side of the fixed frame 48. The rotor end of the fifth motor 50 is fixed to the fifth gear 49. The outer gear ring two 51 is fixed on the rotating frame 42. The fifth gear 49 meshes with the outer gear ring two 51. An electric push rod three 43 is provided on the inner surface of the rotating frame 42. The telescopic end of the electric push rod three 43 is fixed to the welding head 44. On both sides of the welding frame 41, there are protective eaves 52. When welding needs to start, the fifth motor 50 is started. The rotor end of the fifth motor 50 drives the fifth gear 49 to rotate. The fifth gear 49 meshes with the outer gear ring two 51. When the fifth gear 49 rotates, the outer gear ring two 51 will also rotate accordingly. The outer gear ring two 51 is fixed on the rotating frame 42. Therefore, when the outer gear ring two 51 rotates, the rotating frame 42 will also rotate synchronously. The guide groove 45 on the surface of the rotating frame 42 cooperates with the guide wheel 47 on the fixed rod 46 to ensure the smooth rotation of the rotating frame 42 and prevent deviation or jamming. The welding head 44 is fixed to the telescopic end of the electric push rod three 43. The electric push rod three 43 can adjust the position of the welding head 44 in real time according to the welding requirements. When the rotating frame 42 rotates, the welding head 44 also rotates around the axis of the welding frame 41 to achieve a full-range welding operation. The electric push rod three 43 can dynamically adjust the distance between the welding head 44 and the welding interface according to the actual welding situation to ensure the best contact point and welding quality during the welding process. During the welding process, the protective eaves 52 effectively isolate the welding area from the external environment, reducing the influence of dust, spatter, etc. on the welding quality and further improving the welding effect. At the same time, the rotating frame 42 drives the welding head 44 to rotate inside the welding frame 41, which can not only cover the weld seam in all directions to ensure the continuity and consistency of the weld seam during the welding process, but also achieve a more uniform heating distribution during the welding process, thereby reducing the risk of local overheating and being beneficial to avoiding the situation where the material properties of thin-walled materials decline or the materials are deformed and burned through due to local temperature fluctuations;

[0044] It should be noted that the protective eave 52 is in a tapered shape that tapers outward from the inside of the welding frame 41, i.e., it gradually narrows from the inside of the welding frame 41 to the outside. Together with the circular fit of the welding frame 41, it forms a relatively enclosed welding environment. The tapered structure of the protective eave 52 can guide the inert gas flow towards the welding area, making it easier for the gas to concentrate in the welding area, reducing the possibility of gas diffusion to the surrounding areas, thereby improving the effective utilization rate of the gas. At the same time, the inclination angle of the protective eave 52 forms a physical barrier that can effectively prevent external air from entering the welding area. Even if a small amount of air attempts to enter, it will be directed away from the weld due to the obstruction of the protective eave 52, effectively reducing the occurrence of oxidation reactions and enhancing the gas protection effect. The circular shape of the welding frame 41 provides a continuous and recyclable flow path for the flowing gas inside the welding frame 41, further extending the residence time of the inert gas, enabling comprehensive and continuous protection of the weld of thin-walled materials, and thus being conducive to improving the welding quality;

[0045] It should be further noted that the protective eave 52 is in a tapered shape that tapers outward from the inside of the welding frame 41, which can form an effective barrier during the welding process to prevent most of the splashed metal particles from escaping from the side. Due to its inclined angle, the splashes can be directed away from the weld, reducing the contamination of the weld surface. Even if a small amount of splashes break through the obstruction of the protective eave 52, they will be further guided to a position away from the key welding area due to the tapered structure of the protective eave 52, avoiding additional damage to the weld caused by secondary splashes;

[0046] The inner diameter of the welding frame 41 is smaller than the inner diameter of the rotating frame 42, i.e., the rotating frame 42 is in a concave state and rotates inside the welding frame 41, providing more operating space for the welding head 44.

[0047] Refer to Figures 1 - 10, there are two arc-shaped clamping plates one 24, arc-shaped clamping plate two 29, C-shaped clamping plate one 30, C-shaped clamping plate two 31 inside the support frame 13, and a driving component for driving the two arc-shaped clamping plates one 24 or arc-shaped clamping plate two 29 or C-shaped clamping plate one 30 or C-shaped clamping plate two 31 to approach or move away from each other simultaneously. The driving component includes a slider 16, a motor three 17, a bidirectional lead screw three 18, a guide rod 19, a sliding block 20, a connecting frame 21, an electric push rod one 23, a gear two 25, a gear three 26, a mounting frame two 27, and a motor four 28. There is a chute 14 inside the support frame 13, the bidirectional lead screw two 15 rotates inside the chute 14, there are two sets of sliders 16 and they slide inside the chute 14, the bidirectional lead screw two 15 is threadedly connected to the slider 16, the motor three 17 is fixed on one side of the support frame 13, the rotor end of the motor three 17 is fixed to the bidirectional lead screw two 15, the bidirectional lead screw three 18 rotates between a set of sliders 16, the guide rod 19 is fixed between the other set of sliders 16, the sliding block 20 is threadedly connected to the bidirectional lead screw three 18, the sliding block 20 can slide on the surface of the guide rod 19, the connecting frame 21 is perpendicular to the bidirectional lead screw three 18 and the guide rod 19, there is a sliding groove 22 at the bottom of the connecting frame 21, the sliding block 20 slides inside the sliding groove 22, the electric push rod one 23 is fixed to the bottom of the sliding block 20, the telescopic end of the electric push rod one 23 is inserted and matched with the top of the arc-shaped clamping plate one 24 or arc-shaped clamping plate two 29 or C-shaped clamping plate one 30 or C-shaped clamping plate two 31, the gear two 25 and the gear three 26 both rotate on one side of a set of sliders 16, the gear two 25 is fixed to one end of the bidirectional lead screw three 18, the mounting frame two 27 is fixed on one side of a set of sliders 16, the motor four 28 is fixed on one side of the mounting frame two 27, the rotor end of the motor four 28 is fixed to the gear three 26, the gear two 25 meshes with the gear three 26. Starting the motor three 17, its rotor end drives the bidirectional lead screw two 15 to rotate. The rotation of the bidirectional lead screw two 15 causes the two sets of sliders 16, the sliding block 20 thereon, and the electric push rod one 23 fixed to the bottom of the sliding block 20 to move synchronously along the chute 14 to the top of the arc-shaped clamping plate one 24 or arc-shaped clamping plate two 29 or C-shaped clamping plate one 30 or C-shaped clamping plate two 31. According to the actual welding needs, by controlling the telescopic action of the electric push rod one 23, the telescopic end of the electric push rod one 23 is inserted and matched with the top of the arc-shaped clamping plate one 24 or arc-shaped clamping plate two 29 or C-shaped clamping plate one 30 or C-shaped clamping plate two 31. Starting the motor four 28, its rotor end drives the gear three 26 to rotate. The gear three 26 meshes with the gear two 25. Therefore, the rotation of the gear three 26 will drive the gear two 25 to rotate, thereby driving the bidirectional lead screw three 18 to rotate. Under the connection of the connecting frame 21, the rotation of the bidirectional lead screw three 18 causes the sliding block 20 and the electric push rod one 23 fixed to its bottom to drive the two arc-shaped clamping plates one 24 or arc-shaped clamping plate two 29 or C-shaped clamping plate one 30 or C-shaped clamping plate two 31 that are inserted and matched with it to approach simultaneously until they are in contact with the surface of the welding material, so as to adapt to the clamping and fixing of welding materials of different shapes and sizes.

[0048] Refer to Figures 1 - 10, a plug rod 39 for limiting the two arc-shaped clamping plates one 24, arc-shaped clamping plate two 29, U-shaped clamping plate one 30, and U-shaped clamping plate two 31 is provided at the top of the support frame 13, and a limit release component for releasing the limit of the plug rod 39. The limit release component includes a connecting rod 33, a connecting shaft 34, a gear four 35, a rack 36, an electric push rod two 37, a cam 38, and a connecting plate 40. The bottom of the connecting rod 33 is fixed to the top of the slider 16. The inside of the connecting rod 33 is a cavity. The cam 38 rotates inside the connecting rod 33. One end of the connecting shaft 34 passes through the connecting rod 33 and is fixed to the cam 38. The gear four 35 rotates on one side of the connecting rod 33. The gear four 35 is fixed to one end of the connecting shaft 34. The rack 36 slides on one side of the connecting rod 33. The electric push rod two 37 is fixed to one side of the connecting rod 33. The telescopic end of the electric push rod two 37 is fixed to the rack 36. The rack 36 meshes with the gear four 35. The connecting plate 40 is fixed to the plug rod 39. The plug rod 39 slides on the support frame 13. A plurality of slide rods 32 are slidably provided on both sides of the support frame 13. The plurality of slide rods 32 are respectively fixed to one side of the arc-shaped clamping plate one 24, arc-shaped clamping plate two 29, U-shaped clamping plate one 30, and U-shaped clamping plate two 31. The slide rods 32 are perpendicular to the plug rod 39 and are in plug-in fit. When the cam 38 abuts against the bottom of the connecting plate 40, the plug rod 39 slides upward and disengages from the slide rod 32. The connecting rod 33 moves synchronously with the slider 16. When the slider 16 moves to the top of the arc-shaped clamping plate one 24 or arc-shaped clamping plate two 29 or U-shaped clamping plate one 30 or U-shaped clamping plate two 31, the electric push rod two 37 is started to extend and retract to push the rack 36 to slide, driving the gear four 35 and the connecting shaft 34 and the cam 38 thereon to rotate until they abut against the bottom of the connecting plate 40, thereby driving one plug rod 39 to rise and disengage from the corresponding slide rod 32. At this time, the two arc-shaped clamping plates one 24 or arc-shaped clamping plate two 29 or U-shaped clamping plate one 30 or U-shaped clamping plate two 31 can be driven by the motor four 28 to approach each other until they are in contact with the surface of the welding material for fixation; the synchronous movement of the connecting rod 33 and the slider 16 can quickly and accurately adjust the positions of the arc-shaped clamping plate one 24 or arc-shaped clamping plate two 29 or U-shaped clamping plate one 30 or U-shaped clamping plate two 31, reducing the time cost of manual adjustment, and thus being beneficial to improving production efficiency;

[0049] The two arc-shaped clamping plates one 24, arc-shaped clamping plate two 29, U-shaped clamping plate one 30, and U-shaped clamping plate two 31 are respectively located on both sides of the welding frame 41, and can flexibly adjust the positions of the two arc-shaped clamping plates one 24, arc-shaped clamping plate two 29, U-shaped clamping plate one 30, and U-shaped clamping plate two 31 according to the specific shape of the workpiece, so that the two arc-shaped clamping plates one 24, arc-shaped clamping plate two 29, U-shaped clamping plate one 30, and U-shaped clamping plate two 31 can fit the surface of the workpiece, increasing the contact area with the surface of the workpiece, and can provide uniform and appropriate clamping force during the welding process, effectively reducing the deformation caused by local stress concentration or insufficient support;

[0050] Refer to Figure 7 , 8, arc-shaped splint 1 (24), arc-shaped splint 2 (29), U-shaped splint 1 (30), and U-shaped splint 2 (31) are all provided with jacks at their tops that are inserted and matched with the telescopic end of electric push rod 1 (23), facilitating the telescopic end of electric push rod 1 (23) to drive the two arc-shaped splint 1 (24) or arc-shaped splint 2 (29) or U-shaped splint 1 (30) or U-shaped splint 2 (31) to approach or move away from each other. When one side of arc-shaped splint 1 (24), arc-shaped splint 2 (29), U-shaped splint 1 (30), and U-shaped splint 2 (31) is in contact with the inner side of support frame 13, the connecting line of the centers of the jacks at the tops of arc-shaped splint 1 (24), arc-shaped splint 2 (29), U-shaped splint 1 (30), and U-shaped splint 2 (31) is parallel to the inner edge line of the cross-section of support frame 13, facilitating the rapid positioning of arc-shaped splint 1 (24) or arc-shaped splint 2 (29) or U-shaped splint 1 (30) or U-shaped splint 2 (31) by electric push rod 1 (23);

[0051] It should be noted that the thickness dimensions of arc-shaped splint 1 (24), arc-shaped splint 2 (29), U-shaped splint 1 (30), and U-shaped splint 2 (31) are the same. Electric push rod 1 (23) can quickly position the positions of arc-shaped splint 1 (24) or arc-shaped splint 2 (29) or U-shaped splint 1 (30) or U-shaped splint 2 (31) by moving with slider 16 corresponding to the thickness and its multiples.

[0052] Refer to Figure 6 , 7 , the tops of multiple sliding rods 32 are all provided with insertion holes that are inserted and matched with insertion rods 39. When the connecting line of the centers of the jacks at the tops of arc-shaped splint 1 (24), arc-shaped splint 2 (29), U-shaped splint 1 (30), and U-shaped splint 2 (31) is parallel to the inner edge line of the cross-section of support frame 13, the connecting line of the centers of the multiple insertion holes is parallel to the inner edge line of the cross-section of support frame 13. At the same time, the outer diameters of the multiple insertion holes are tangent to the outer edge line of the cross-section of support frame 13, facilitating the efficient insertion and matching of insertion rod 39 with the insertion holes at the tops of the corresponding sliding rods 32. The length cross-sections of the multiple sliding rods 32 are in a stepped shape, facilitating the provision of more stable support for arc-shaped splint 1 (24), arc-shaped splint 2 (29), U-shaped splint 1 (30), and U-shaped splint 2 (31).

[0053] Refer to Figure 1 , 10, on both sides of the bracket 1, there are cylinders 1-3. On the telescopic ends of the cylinders 1-3, there are clamping seats 4. Inside the clamping seats 4, two clamping plates 5 are slidably arranged. Inside the clamping seats 4, a bidirectional lead screw 1-6 is rotatably arranged. The two clamping plates 5 are threadedly connected to the bidirectional lead screw 1-6. On one side of the clamping seat 4, a motor 1-7 is fixed. The rotor end of the motor 1-7 is fixed to the bidirectional lead screw 1-6. On both sides of the bracket 1, there are through openings 2. When the welding frame 41 rotates 90 degrees along the axis of the external gear ring 1-9, the inner diameters of the through openings 2 on both sides of the bracket 1 communicate with the inner diameter of the welding frame 41. When starting the motor 2-12 to drive the welding frame 41 to rotate 90 degrees along the axis of the external gear ring 1-9, pass the shorter welding material through the through opening 2. Start the motor 1-7 to rotate the bidirectional lead screw 1-6. Under the guiding action of the inner cavity of the clamping seat 4, make the two clamping plates 5 approach each other until they are in contact with the surface of the material to be welded for fixation. At the same time, cooperate with the arc-shaped clamping plate 1-24 or the arc-shaped clamping plate 2-29 or the U-shaped clamping plate 1-30 or the U-shaped clamping plate 2-31 to further fix the welding material, thereby effectively maintaining stability during welding.

[0054] Refer to Figure 1 , at the bottom of the bracket 1, there are pulleys 53, which facilitate the movement of the entire welding device.

[0055] A welding method for sports equipment, applicable to any one of the above-mentioned welding devices for sports equipment, includes the following operating steps:

[0056] S1. Push the bracket 1, and under the action of the pulleys 53, move the bracket 1 to the welding position;

[0057] S2: Select one of the arc-shaped clamping plate 1-24, the arc-shaped clamping plate 2-29, the U-shaped clamping plate 1-30, and the U-shaped clamping plate 2-31 according to the shape of the welding material. Start the motor 3-17 to rotate the bidirectional lead screw 2-15. Under the guiding action of the chute 14, make the two groups of sliders 16 drive the bidirectional lead screw 3-18, the guide rod 19, the sliding block 20, and the electric push rod 1-23 on them to approach or move away from each other along the length direction of the bidirectional lead screw 2-15 until they are above the arc-shaped clamping plate 1-24 or the arc-shaped clamping plate 2-29 or the U-shaped clamping plate 1-30 or the U-shaped clamping plate 2-31. Start the electric push rod 2-37 to extend and push the rack 36 to slide, driving the gear 4-35 and the connecting shaft 34 and the cam 38 on it to rotate until they are in contact with the bottom of the connecting plate 40, thereby driving a plug rod 39 to rise out of the corresponding slide rod 32. Start the electric push rod 1-23 to extend until it is inserted and matched with the jack above the arc-shaped clamping plate 1-24 or the arc-shaped clamping plate 2-29 or the U-shaped clamping plate 1-30 or the U-shaped clamping plate 2-31. Pass the longer welding material into the welding frame 41 from both sides of the welding frame 41 respectively. At this time, start the motor 4-28 to make the gear 3-26 drive the gear 2-25 and the bidirectional lead screw 3-18 to rotate. Under the guiding action of the guide rod 19 and the connecting action of the sliding block 20, make the two sliding blocks 20 drive the arc-shaped clamping plate 1-24 or the arc-shaped clamping plate 2-29 or the U-shaped clamping plate 1-30 or the U-shaped clamping plate 2-31 to approach each other until they are in contact with the surface of the welding material for clamping and fixation;

[0058] S3: Start the fifth motor 50 to drive the fifth gear 49 to drive the second external gear ring 51 and the rotating frame 42 to rotate within the welding frame 41, thereby driving the welding head 44 to rotate for welding work. At the same time, start the third electric push rod 43 to adjust the distance between the welding head 44 and the welding interface in real time to complete the welding of longer welding materials;

[0059] S4: Start the second motor 12 to drive the first gear 10 to drive the first external gear ring 9 to rotate, thereby driving the second cylinder 8 and the support frame 13 at its telescopic end to rotate by ninety degrees to communicate with the through port 2. Pass the shorter welding materials through the through ports 2 on both sides of the support frame 13 respectively. Start the first motor 7 to rotate the first bidirectional lead screw 6, and under the guiding action inside the clamping seat 4, make the two clamping plates 5 on both sides approach each other respectively until they fit the surface of the welding material for clamping and fixing;

[0060] S5: Start the fifth motor 50 again to drive the fifth gear 49 to drive the second external gear ring 51 and the rotating frame 42 to rotate within the welding frame 41, thereby driving the welding head 44 to rotate for welding work. At the same time, start the third electric push rod 43 to adjust the distance between the welding head 44 and the welding interface in real time to complete the welding of shorter welding materials;

[0061] S6: Organize the longer welding materials completed in S3 and the shorter welding materials completed in S5, and perform re-welding on the welding materials that need further welding by the methods of S1 to S5.

[0062] Finally, several points should be noted: First, in the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense, which can be mechanical connection or electrical connection, and can also be the communication inside two components. It can be directly connected. "Up", "down", "left", "right", etc. are only used to represent the relative position relationship. When the absolute position of the described object changes, the relative position relationship may change;

[0063] Second: In the attached drawings of the disclosed embodiments of the present invention, only the structures related to the disclosed embodiments of the present disclosure are involved. Other structures can refer to the usual designs. Without conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

[0064] Finally: The above are only the preferred embodiments of the present invention and are not used to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

[0065] The above are all the preferred embodiments of the present invention and do not limit the protection scope of the present invention accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention shall be covered within the protection scope of the present invention.

Claims

1. A sports equipment welding device, comprising a bracket (1), characterized in that: At the top of the bracket (1), there is a second cylinder (8) and a rotating assembly for driving the second cylinder (8) to rotate. The telescopic end of the second cylinder (8) is provided with a support frame (13). Inside the support frame (13), there are two welding frames (41). The two welding frames (41) form a complete circle. Inside the welding frame (41), there is a telescopic welding head (44) and a welding assembly for driving the welding head (44) to rotate along the axis of the welding frame (41). Inside the support frame (13), there are two arc-shaped clamping plates one (24), arc-shaped clamping plates two (29), U-shaped clamping plates one (30), U-shaped clamping plates two (31), and a driving assembly for driving the two arc-shaped clamping plates one (24) or arc-shaped clamping plates two (29) or U-shaped clamping plates one (30) or U-shaped clamping plates two (31) to approach or move away from each other simultaneously. At the top of the support frame (13), there is a plug rod (39) for limiting the two arc-shaped clamping plates one (24), arc-shaped clamping plates two (29), U-shaped clamping plates one (30), U-shaped clamping plates two (31), and a limiting release assembly for releasing the limit of the plug rod (39). The driving assembly and the limiting release assembly move synchronously. When the limiting release assembly releases the limit between the plug rod (39) and any two of the arc-shaped clamping plates one (24) or arc-shaped clamping plates two (29) or U-shaped clamping plates one (30) or U-shaped clamping plates two (31), the driving assembly drives any two of the arc-shaped clamping plates one (24) or arc-shaped clamping plates two (29) or U-shaped clamping plates one (30) or U-shaped clamping plates two (31) to approach or move away from each other. The two arc-shaped clamping plates one (24), arc-shaped clamping plates two (29), U-shaped clamping plates one (30), U-shaped clamping plates two (31) are respectively located on both sides of the welding frame (41).

2. The welding device for a sports equipment according to claim 1, wherein: The welding assembly includes a rotating frame (42), a fixed rod (46), a guide wheel (47), a fixed frame (48), a fifth gear (49), a fifth motor (50), and an outer gear ring two (51). The rotating frame (42) rotates inside the welding frame (41). A guide groove (45) is formed on the surface of the rotating frame (42). The fixed rod (46) and the fixed frame (48) are both fixed on the inner wall of the welding frame (41). The guide wheel (47) rotates at the bottom of the fixed rod (46). The guide wheel (47) can roll in the guide groove (45). The fifth gear (49) rotates on the fixed frame (48). The fifth motor (50) is fixed on one side of the fixed frame (48). The rotor end of the fifth motor (50) is fixed to the fifth gear (49). The outer gear ring two (51) is fixed on the rotating frame (42). The fifth gear (49) meshes with the outer gear ring two (51). An electric push rod three (43) is arranged on the inner surface of the rotating frame (42). The telescopic end of the electric push rod three (43) is fixed to the welding head (44). Protective eaves (52) are arranged on both sides of the welding frame (41).

3. The welding device for a sports equipment according to claim 1, wherein: The driving assembly includes a slider (16), a third motor (17), a third bidirectional lead screw (18), a guide rod (19), a sliding block (20), a connecting frame (21), a first electric push rod (23), a second gear (25), a third gear (26), a second mounting bracket (27), and a fourth motor (28). A chute (14) is provided inside the support frame (13), and the second bidirectional lead screw (15) rotates in the chute (14). There are two groups of sliders (16) which slide in the chute (14). The second bidirectional lead screw (15) is threadedly connected to the slider (16). The third motor (17) is fixed to one side of the support frame (13), and the rotor end of the third motor (17) is fixed to the second bidirectional lead screw (15). The third bidirectional lead screw (18) rotates between one group of sliders (16), and the guide rod (19) is fixed between the other group of sliders (16). The sliding block (20) is threadedly connected to the third bidirectional lead screw (18), and the sliding block (20) can slide on the surface of the guide rod (19). The connecting frame (21) is perpendicular to the third bidirectional lead screw (18) and the guide rod (19). A sliding groove (22) is provided at the bottom of the connecting frame (21), and the sliding block (20) slides in the sliding groove (22). The first electric push rod (23) is fixed to the bottom of the sliding block (20), and the telescopic end of the first electric push rod (23) is inserted and matched with the top of the first arc-shaped clamping plate (24), the second arc-shaped clamping plate (29), the first U-shaped clamping plate (30), or the second U-shaped clamping plate (31). The second gear (25) and the third gear (26) both rotate on one side of one group of sliders (16). The second gear (25) is fixed to one end of the third bidirectional lead screw (18). The second mounting bracket (27) is fixed to one side of one group of sliders (16). The fourth motor (28) is fixed to one side of the second mounting bracket (27), and the rotor end of the fourth motor (28) is fixed to the third gear (26). The second gear (25) meshes with the third gear (26).

4. A welding device for sports equipment according to claim 3, characterized in that: The limit release assembly includes a connecting rod (33), a connecting shaft (34), a fourth gear (35), a rack (36), a second electric push rod (37), a cam (38), and a connecting plate (40). The bottom of the connecting rod (33) is fixed to the top of the slider (16). The inside of the connecting rod (33) is a cavity. The cam (38) rotates inside the connecting rod (33). One end of the connecting shaft (34) passes through the connecting rod (33) and is fixed to the cam (38). The fourth gear (35) rotates on one side of the connecting rod (33). The fourth gear (35) is fixed to one end of the connecting shaft (34). The rack (36) slides on one side of the connecting rod (33). The second electric push rod (37) is fixed to one side of the connecting rod (33). The telescopic end of the second electric push rod (37) is fixed to the rack (36). The rack (36) meshes with the fourth gear (35). The connecting plate (40) is fixed to the insertion rod (39). The insertion rod (39) slides on the support frame (13). A plurality of sliding rods (32) are slidably provided on both sides of the support frame (13). The plurality of sliding rods (32) are respectively fixed to one side of the first arc-shaped clamping plate (24), the second arc-shaped clamping plate (29), the first C-shaped clamping plate (30), and the second C-shaped clamping plate (31). The sliding rod (32) is perpendicularly arranged with the insertion rod (39) and is in plug-in fit. When the cam (38) abuts against the bottom of the connecting plate (40), the insertion rod (39) slides upward and disengages from the sliding rod (32).

5. A welding device for sports equipment according to claim 4, characterized in that: The first arc-shaped clamping plate (24), the second arc-shaped clamping plate (29), the first C-shaped clamping plate (30), and the second C-shaped clamping plate (31) are all provided with insertion holes at the top for plug-in fit with the telescopic end of the first electric push rod (23). When one side of the first arc-shaped clamping plate (24), the second arc-shaped clamping plate (29), the first C-shaped clamping plate (30), and the second C-shaped clamping plate (31) abuts against the inner side of the support frame (13), the connecting line of the centers of the insertion holes at the top of the first arc-shaped clamping plate (24), the second arc-shaped clamping plate (29), the first C-shaped clamping plate (30), and the second C-shaped clamping plate (31) is parallel to the inner edge line of the cross-section of the support frame (13).

6. The welding device for a sports equipment according to claim 5, characterized in that: A plurality of the sliding rods (32) are all provided with plug-in holes for plug-in fit with the insertion rod (39). When the connecting line of the centers of the insertion holes at the top of the first arc-shaped clamping plate (24), the second arc-shaped clamping plate (29), the first C-shaped clamping plate (30), and the second C-shaped clamping plate (31) is parallel to the inner edge line of the cross-section of the support frame (13), the connecting line of the centers of the plurality of plug-in holes is parallel to the inner edge line of the cross-section of the support frame (13), and at the same time, the outer diameters of the plurality of plug-in holes are tangent to the outer edge line of the cross-section of the support frame (13). The length cross-sections of the plurality of sliding rods (32) are in a stepped shape.

7. A welding device for sports equipment according to claim 1, characterized in that: The rotating assembly includes an outer gear ring 1 (9), a gear 1 (10), a mounting bracket 1 (11), and a motor 2 (12). The outer gear ring 1 (9) and the gear 1 (10) are both rotatably arranged on the top of the bracket (1). The outer gear ring 1 (9) is fixed to the cylinder 2 (8). The mounting bracket 1 (11) is fixed to the top of the bracket (1). The motor 2 (12) is fixed to the top of the mounting bracket 1 (11). The rotor end of the motor 2 (12) is fixed to the gear 1 (10). The gear 1 (10) meshes with the outer gear ring 1 (9).

8. A welding device for sports equipment according to claim 7, characterized in that: On both sides of the bracket (1), there are cylinders 1 (3). The telescopic ends of the cylinders 1 (3) are both provided with clamping seats (4). Two clamping plates (5) are slidably arranged in the clamping seats (4). A bidirectional lead screw 1 (6) is rotatably arranged in the clamping seats (4). The two clamping plates (5) are threadedly connected to the bidirectional lead screw 1 (6). One side of the clamping seat (4) is fixed with a motor 1 (7). The rotor end of the motor 1 (7) is fixed to the bidirectional lead screw 1 (6). Through holes (2) are opened on both sides of the bracket (1). When the welding frame (41) rotates 90 degrees along the axis of the outer gear ring 1 (9), the inner diameters of the through holes (2) on both sides of the bracket (1) are communicated with the inner diameter of the welding frame (41).

9. The welding device for a sports equipment according to claim 1, characterized in that: A pulley (53) is arranged at the bottom of the bracket (1).

10. A welding method for sports equipment, applicable to a welding device for sports equipment described in any one of claims 1-9, characterized in that, It includes the following operating steps: S1. Push the bracket (1), and move the bracket (1) to the welding position under the action of the pulley (53). S2: Select one of the arc-shaped splint 1 (24), arc-shaped splint 2 (29), 匚-shaped splint 1 (30), and 匚-shaped splint 2 (31) according to the shape of the welding material, start the motor 3 (17) to rotate the bidirectional screw rod 2 (15), and under the guidance of the slide groove (14), the two sets of sliders (16) drive the bidirectional screw rod 3 (18), the guide rod (19), the sliding block (20), and the electric push rod 1 (23) thereon to move closer to or farther away from each other along the length direction of the bidirectional screw rod 2 (15) to the top of the arc-shaped splint 1 (24) or the arc-shaped splint 2 (29) or the 匚-shaped splint 1 (30) or the 匚-shaped splint 2 (31), and start the electric push rod 2 (37) to extend and push the rack (36) to slide and drive the gear 4 (35) and its connecting shaft (34) and cam (38) to rotate until they abut against the bottom of the connecting plate (40), thereby driving the welding machine to weld the welding machine to the welding machine. A plug rod (39) is moved upward to disengage from the corresponding slide rod (32), and an electric push rod (23) is started to extend to the socket above the arc-shaped splint (24) or the arc-shaped splint (29) or the 匚-shaped splint (30) or the 匚-shaped splint (31), and the longer welding material is respectively inserted into the welding frame (41) from both sides of the welding frame (41). At this time, the motor (28) is started to make the gear (26) drive the gear (25) and the two-way screw rod (18) to rotate, and under the guiding effect of the guide rod (19) and the connecting effect of the sliding block (20), the two sliding blocks (20) drive the arc-shaped splint (24) or the arc-shaped splint (29) or the 匚-shaped splint (30) or the 匚-shaped splint (31) to approach each other until they are in contact with the surface of the welding material, and are clamped and fixed; S3: starting the motor five (50) to make the gear five (49) drive the outer gear ring two (51) and the rotating frame (42) to rotate in the welding frame (41), thereby driving the welding head (44) to rotate to perform welding work, and at the same time starting the electric push rod three (43) to adjust the distance between the welding head (44) and the welding interface in real time to complete the welding of longer welding materials; S4: Start the second motor (12) to make the gear one (10) drive the outer gear ring one (9) to rotate, thereby driving the second cylinder (8) and the support frame (13) at its telescopic end to rotate 90 degrees to connect with the through-port (2), and pass the shorter welding material through the through-ports (2) on both sides of the support frame (13), and start the first motor (7) to make the bidirectional screw rod one (6) rotate, and under the guidance of the inner cavity of the clamping seat (4), the two clamping plates (5) on both sides are respectively moved closer to each other until they are in contact with the surface of the welding material, so as to clamp and fix it; S5: start the motor five (50) again to make the gear five (49) drive the outer gear ring two (51) and the rotating frame (42) to rotate in the welding frame (41), thereby driving the welding head (44) to rotate to perform welding work, and at the same time start the electric push rod three (43) to adjust the distance between the welding head (44) and the welding interface in real time to complete the welding of shorter welding materials; S6: Sort out the longer welding materials completed in S3 and the shorter welding materials completed in S5, and re-weld the welding materials that need further welding in the manner of S1 to S5.

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