Welding device and welding method for bent pipe fittings of fitness equipment

Abstract

The invention discloses a fitness equipment bent pipe fitting welding device and method, and relates to the technical field of welding equipment, the fitness equipment bent pipe fitting welding device comprises a welding mechanical arm and a welding table, one end of the welding mechanical arm is provided with a welding head, and the top of the welding table is connected with a movable clamping assembly and a fixed clamping assembly; the clamp for fixing the pipe fittings can be freely adjusted, so that the clamp can be suitable for fixing the bent pipe fittings with different bending angles, the bent pipe has enough space to rotate by lifting the clamping equipment, pipe orifices of two groups of clamped pipe fittings can be aligned through the linked clamping and centering clamp, and the clamping efficiency is improved. And the linkage mechanism can move along with moving adjustment of the clamp, it is guaranteed that the two sets of driving bottom boxes can be always kept connected through the driving connecting shaft set, the pipe fitting can be driven to be rotationally welded after clamping is completed, and therefore it is guaranteed that a connector is welded evenly, and then the sealing performance of the connector is guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of welding equipment, and more specifically, to a welding device and a welding method for bent pipe fittings of fitness equipment. Background Art

[0002] The frames of fitness equipment are mostly tubular, and in order to conform to ergonomics and cooperate with the direction of force, the frame pipes of fitness equipment will have a large number of bent pipe structures. The welding of bent pipes is relatively difficult. When clamping and fixing, if the interfaces of the pipes cannot be aligned, the interfaces will be unevenly welded, which will cause the pipes to fall off easily.

[0003] After searching, an existing patent (publication number: CN210232076U) discloses an automatic submerged arc welding pipe rotating bracket, which includes a base, a slide groove and a support rod provided on the base, the slide groove is located inside the base, the support rod is fixedly connected to the upper surface of the base, a slider is provided inside the slide groove, and a fixed rod is provided at the upper end of the slider. A connecting plate and a drive motor are provided on the fixed rod, the connecting plate is fixedly connected to the outer surface below the fixed rod, the drive motor is fixedly connected to the upper end of the fixed rod, a fixing bolt is provided on the connecting plate, a motor shaft is provided inside the drive motor, and a clamping plate is provided at the end of the motor shaft, and an adjusting bolt is provided on the clamping plate. This realizes the automatic rotation of the pipe during the welding process, speeds up the welding process, reduces the labor intensity of the operator when welding the pipe, and improves the efficiency of the pipe welding process. In the process of realizing this application, the inventor found that the existing technology has the following problems: The existing fitness equipment welding device cannot ensure the alignment of the interfaces of the welded pipe ends of the pipe fittings, which will result in a large interface gap and may cause deviation in the connection direction of the bent pipes. Moreover, since the bending directions of each bent pipe are different, the existing fitness equipment welding device does not have a clamp adjustment structure, which will cause the pipe ends of the pipe fittings to be unable to be aligned when clamped.

[0004] Therefore, in order to solve the above-mentioned related technical problems, a welding device and a welding method for elbow fittings of fitness equipment are proposed. Summary of the Invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present application provides a welding device and a welding method for elbow fittings of fitness equipment to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the present application provides the following technical solutions: a fitness equipment elbow fitting welding device, comprising a welding robot arm and a welding table, wherein one end of the welding robot arm is provided with a welding horn, the top of the welding table is connected to a movable clamping assembly and a fixed clamping assembly, and support columns are connected between the movable clamping assembly and the fixed clamping assembly and the welding table; Among them, the mobile clamping assembly includes a mobile connecting platform and a mobile support connecting frame, and the fixed clamping assembly includes a fixed connecting platform and a fixed support connecting frame. The bottoms of the mobile connecting platform and the fixed connecting platform are both connected to a driving bottom box, and a driving coupling group is connected between the two groups of driving bottom boxes. A clamp connecting frame is provided in the mobile support connecting frame and the fixed support connecting frame.

[0007] Preferably, the movable clamping assembly and the fixed clamping assembly are symmetrical to each other, the fixed support connecting frame is fixedly connected to the top of the fixed connecting platform, an adjustment slide is provided on the top of the movable connecting platform, the bottom of the movable support connecting frame is connected to a sliding base, and the sliding base is slidably connected to the adjustment slide through a rotating shaft.

[0008] Preferably, a circular hole is provided inside the clamp connecting frame, and a rotating connecting ring is inserted into the inside of the clamp connecting frame through a bearing, and a limiting connecting ring is welded on the side of the rotating connecting ring away from the clamp connecting frame, and the inner diameters of the rotating connecting ring and the limiting connecting ring are the same.

[0009] Preferably, the rotating connecting ring and the limiting connecting ring are provided with three groups of clamping grooves arranged in a circular array, and the center position of the clamping groove is connected to an adjusting sleeve through a rotating shaft, and an adjusting connecting rod is inserted into the adjusting sleeve.

[0010] Preferably, one end of the adjusting link is connected to one side of the clamp connecting frame through a rotating shaft, and the end of the adjusting link away from the clamp connecting frame is connected to a fixed pressure wheel through a rotating shaft, and the side of the fixed support connecting frame away from the clamp connecting frame is connected to a drive motor.

[0011] Preferably, a drive chassis is connected between the drive motor and the fixed support connecting frame, a group of fixed pressure wheels in the fixed support connecting frame are inserted with a pressure wheel shaft, and the pressure wheel shaft and the output shaft of the drive motor are connected in the drive chassis through a belt.

[0012] Preferably, a transmission nut seat is connected to the outer side of the rotating connecting ring, and a transmission threaded rod is inserted into the transmission nut seat, one end of the transmission threaded rod is connected to the driving bottom box, and the transmission threaded rod is fixedly connected to the clamp connecting frame.

[0013] Preferably, the drive coupling group includes a telescopic shaft, a telescopic sleeve and two sets of universal joint groups, and the telescopic shaft is inserted into the telescopic sleeve, the two sets of universal joint groups are respectively connected to one end of the telescopic shaft and the telescopic sleeve, and the side of the universal joint group away from the drive coupling group is connected to a transmission shaft.

[0014] Preferably, an active bevel gear is sleeved on the outer side of the transmission shaft, the bottom end of the transmission threaded rod is connected to the transmission bevel gear, and the active bevel gear and the transmission bevel gear are meshed in the driving bottom box, and a clamping motor is connected to one side of a group of the driving bottom boxes, and the output shaft of the clamping motor is connected to the transmission shaft.

[0015] Preferably, a welding device and method for a fitness equipment elbow fitting is provided, wherein the welding method comprises the following steps: Step 1: First, adjust the position of the mobile clamping assembly according to the bending degree of the connecting elbow, slide the sliding base in the adjustment slot, and rotate the mobile support connecting frame in the adjustment slot to a suitable position through the sliding base; Step 2: During the adjustment and movement process, the connection between the two drive bottom boxes is maintained through the telescopic movement of the telescopic shaft and the telescopic sleeve, and the rotation of the two universal joints. Step 3: After the adjustment is completed, insert the two sets of pipes that need to be connected into the movable support connecting frame and the fixed support connecting frame respectively, and align the ends of the two sets of pipes that need to be welded; Step 4: Then, start the clamping motor to drive the fixed support connecting frame and the movable support connecting frame to clamp the pipe fitting, and drive the rotating connecting ring to rotate, and the rotating connecting ring drives the three sets of adjusting connecting rods to slide and rotate, and during the rotation process, the three sets of fixed pressing wheels press the pipe fitting tightly; Step 5: After the clamping and fixing is completed, the welding robot arm is used to drive the welding head to perform electric welding and fix the joints of the two sets of pipe fittings. After the fixation is completed, the fixed pressure wheel is driven by the driving motor to rotate, and the fixed pressure wheel drives the pipe fitting to rotate, so that rotary welding is performed during the rotation process to weld and seal the interface.

[0016] The technical effects and advantages of this application are: Compared with the existing technology, this fitness equipment bent pipe accessories welding device and its welding method can freely adjust the clamps for fixing pipe fittings, so that it can be suitable for fixing bent pipe fittings with different bending angles, and by lifting the clamping equipment, the bent pipe can have enough space to rotate, and the position of the mobile clamping assembly can be adjusted according to the bending degree of the connected bent pipe. The mobile support connecting frame can slide and move in the adjustment slide groove of the mobile connecting platform through the sliding base, and the sliding base can be rotated and adjusted in the adjustment slide groove through the rotating shaft to adjust the direction and position of the mobile support connecting frame, and the mobile clamping assembly and the fixed clamping assembly are spaced apart from the welding platform through the supporting column, so that the bent pipe has enough space to rotate.

[0017] Compared with the existing technology, this fitness equipment bent pipe fitting welding device and welding method thereof, through the linked clamping and centering clamp, can align the pipe ends of the two groups of clamped pipe fittings, and the linked mechanism can move along with the movement and adjustment of the clamp, ensuring that the two groups of driving bottom boxes can always maintain connection by driving the coupling group, the clamping motor drives the fixed support connecting frame and the movable support connecting frame to clamp the pipe fitting, and rotates by driving the rotating connecting ring, and the rotating connecting ring drives the three groups of adjusting connecting rods to slide and rotate, and during the rotation process, the three groups of fixed pressure wheels press and fix the pipe fitting, the clamp connecting frame forms the structure of the centering clamp through the three groups of adjusting connecting rods, and ensures that the centers of the two groups of pipe fittings are on the same straight line through centering clamping, so that the interfaces of the two groups of pipe fittings can be docked flush.

[0018] Compared with the existing technology, this fitness equipment bent pipe fitting welding device and welding method can drive the pipe fitting to rotate and weld after clamping is completed, thereby ensuring the uniformity of the interface welding and further ensuring the sealing of the interface. After the clamping and fixing are completed, the welding head is first driven by the welding robot arm to perform electric welding and fixation at the joints of the two groups of pipe fittings. After the fixation is completed, the fixed pressure wheel is driven to rotate by the driving motor, and the fixed pressure wheel drives the pipe fitting to rotate, so that rotary welding is performed during the rotation process to weld and seal the interface. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the main body of this application; Figure 2 This is a schematic structural diagram of the side of the welding station of this application; Figure 3 This is a schematic diagram of the structure of the mobile connection station of the present application from a top view; Figure 4 This is a schematic side view of the structure of the fixed clamping assembly of the present application; Figure 5 This is a structural diagram of the fixture connecting frame of this application; Figure 6 This is a schematic structural diagram of the rotating connection ring of this application; Figure 7 This is a structural diagram of the adjustment connecting rod of this application; Figure 8 This is a schematic diagram of the structure of the drive motor of this application; Figure 9 This is a schematic structural diagram of the drive coupling assembly of this application.

[0020] The accompanying drawings are marked as follows: 1. Welding robot arm; 11. Welding head; 2. Welding table; 3. Mobile clamping assembly; 31. Mobile connecting table; 311. Adjusting slide; 32. Mobile support connecting frame; 321. Sliding base; 33. Driving bottom box; 34. Driving coupling assembly; 341. Telescopic shaft; 342. Telescopic sleeve; 343. Universal joint assembly; 344. Transmission shaft; 345. Active bevel gear; 35. Clamping motor; 4. Fixed clamping assembly ; 41. Fixed connecting platform; 42. Fixed support connecting frame; 421. Clamp connecting frame; 422. Rotating connecting ring; 4221. Transmission nut seat; 423. Limiting connecting ring; 4231. Clamping slide; 424. Adjusting sleeve; 425. Adjusting connecting rod; 426. Fixed pressure wheel; 4261. Pressure wheel rotating shaft; 427. Transmission threaded rod; 4271. Transmission bevel gear; 43. Driving motor; 431. Driving chassis; 5. Support column. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0022] As attached Figures 1 to 9 The device for welding elbow fittings for fitness equipment shown in the figure includes a welding robot arm 1 and a welding table 2. A welding head 11 is provided at one end of the welding robot arm 1. A movable clamping assembly 3 and a fixed clamping assembly 4 are connected to the top of the welding table 2. Support columns 5 are connected between the movable clamping assembly 3 and the fixed clamping assembly 4 and the welding table 2. Among them, the mobile clamping assembly 3 includes a mobile connecting platform 31 and a mobile support connecting frame 32, and the fixed clamping assembly 4 includes a fixed connecting platform 41 and a fixed support connecting frame 42. The bottoms of the mobile connecting platform 31 and the fixed connecting platform 41 are both connected to a driving bottom box 33, and a driving coupling group 34 is connected between the two sets of driving bottom boxes 33. A clamp connecting frame 421 is provided in the mobile support connecting frame 32 and the fixed support connecting frame 42; the welding robot arm 1 is a three-axis robot arm, which can drive the welding welding head 11 to move at multiple angles, which is convenient for the interface welding of various elbows, and the welding robot arm 1 and the welding welding head 11 can be moved by the hub Precise welding work can be performed, and the welding work of the pipe fittings is carried out on the welding table 2, and the welding table 2 can be provided with a corresponding cooling mechanism for cooling. The mobile clamping assembly 3 and the fixed clamping assembly 4 clamp and fix the pipe fittings to be welded, and the mobile clamping assembly 3 and the fixed clamping assembly 4 are spaced apart from the welding table 2 through the support column 5, so that the elbow has enough space to rotate, and the two groups of elbows to be welded are clamped and fixed by the mobile support connecting frame 32 and the fixed support connecting frame 42, and the clamping work of the mobile support connecting frame 32 and the fixed support connecting frame 42 is synchronously driven by the driving coupling group 34.

[0023] As a preferred embodiment, the mobile clamping assembly 3 and the fixed clamping assembly 4 are symmetrical to each other, the fixed support connecting frame 42 is fixedly connected to the top of the fixed connecting platform 41, the top of the mobile connecting platform 31 is provided with an adjustment slide 311, the bottom of the mobile support connecting frame 32 is connected to a sliding base 321, and the sliding base 321 is slidingly connected to the adjustment slide 311 through a rotating shaft; the mobile support connecting frame 32 can slide and move in the adjustment slide 311 of the mobile connecting platform 31 through the sliding base 321, and the sliding base 321 can be rotated and adjusted in the adjustment slide 311 through the rotating shaft, thereby adjusting the direction and position of the mobile support connecting frame 32.

[0024] As a preferred embodiment, a circular hole is provided inside the clamp connecting frame 421, and a rotating connecting ring 422 is inserted into the inside of the clamp connecting frame 421 through a bearing, and a limiting connecting ring 423 is welded on the side of the rotating connecting ring 422 away from the clamp connecting frame 421, and the inner diameters of the rotating connecting ring 422 and the limiting connecting ring 423 are the same; the pipe passes through the clamp connecting frame 421 and is inserted into the rotating connecting ring 422 and the limiting connecting ring 423.

[0025] As a preferred embodiment, the rotating connecting ring 422 and the limiting connecting ring 423 are provided with three groups of clamping grooves 4231 arranged in a circular array, and the center position of the clamping groove 4231 is connected to the adjusting sleeve 424 through a rotating shaft, and the adjusting link 425 is inserted into the adjusting sleeve 424; the rotating connecting ring 422 can drive the adjusting sleeve 424 to rotate, and the adjusting sleeve 424 drives the adjusting link 425 to rotate and adjust in the clamping groove 4231 during the rotation process. The clamp connecting frame 421 constitutes a centering clamp structure through three groups of adjusting links 425, and the center of the two groups of pipe fittings is ensured to be on the same straight line through centering clamping, so that the interfaces of the two groups of pipe fittings can be docked flush.

[0026] As a preferred embodiment, one end of the adjusting link 425 is connected to one side of the clamp connecting frame 421 through a rotating shaft, and the end of the adjusting link 425 away from the clamp connecting frame 421 is connected to a fixed pressure wheel 426 through a rotating shaft, and the side of the fixed support connecting frame 42 away from the clamp connecting frame 421 is connected to a drive motor 43; during the rotation adjustment process, the adjusting link 425 has one end fixed to the clamp connecting frame 421 through the rotating shaft, and rotates on the clamp connecting frame 421 through the rotating shaft, and during the rotation process, the fixed pressure wheel 426 to which it is connected is rotated and adjusted, and the three groups of fixed pressure wheels 426 are moved closer to or farther away from each other during the rotation process.

[0027] As a preferred embodiment, a driving chassis 431 is connected between the driving motor 43 and the fixed support connecting frame 42, and a group of fixed pressure rollers 426 in the fixed support connecting frame 42 are inserted with a pressure roller shaft 4261, and the pressure roller shaft 4261 and the output shaft of the driving motor 43 are connected by a belt in the driving chassis 431; the driving motor 43 can drive the pressure roller shaft 4261 and the fixed pressure roller 426 connected to it to rotate in the driving chassis 431, and the fixed pressure roller 426 drives the pipe fitting to which it is attached to rotate and move during the rotation process.

[0028] As a preferred embodiment, the outer side of the rotating connecting ring 422 is connected to a transmission nut seat 4221, and a transmission threaded rod 427 is inserted into the transmission nut seat 4221, one end of the transmission threaded rod 427 is connected to the driving bottom box 33, and the transmission threaded rod 427 is fixedly connected to the clamp connecting frame 421; the transmission threaded rod 427 drives the transmission nut seat 4221 to move, and the transmission nut seat 4221 drives the rotating connecting ring 422 to rotate during the movement.

[0029] As a preferred embodiment, the driving coupling group 34 includes a telescopic shaft 341, a telescopic sleeve 342 and two sets of universal joint groups 343, and the telescopic shaft 341 is inserted into the telescopic sleeve 342, and the two sets of universal joint groups 343 are respectively connected to one end of the telescopic shaft 341 and the telescopic sleeve 342, and the universal joint group 343 is connected to a transmission shaft 344 on the side away from the driving coupling group 34; the telescopic shaft 341 can be telescopically moved in the telescopic sleeve 342, and the telescopic and rotating action of the telescopic shaft 341, the telescopic sleeve 342 and the two sets of universal joint groups 343 can enable the mobile connecting platform 31 to always maintain connection with the two sets of driving bottom boxes 33 during the movement of the mobile connecting platform 31, and the driving coupling group 34 can realize the synchronous clamping driving action of the mobile support connecting frame 32 and the fixed support connecting frame 42.

[0030] As a preferred embodiment, the outer side of the transmission shaft 344 is sleeved with an active bevel gear 345, the bottom end of the transmission threaded rod 427 is connected to a transmission bevel gear 4271, and the active bevel gear 345 and the transmission bevel gear 4271 are meshed with each other in the driving bottom box 33, and a clamping motor 35 is connected to one side of a group of driving bottom boxes 33, and the output shaft of the clamping motor 35 is connected to the transmission shaft 344; the clamping motor 35 drives the transmission shaft 344 to rotate, and the transmission shaft 344 drives the active bevel gear 345 connected thereto to rotate, and the active bevel gear 345 drives the transmission bevel gear 4271 and the transmission threaded rod 427 connected thereto to rotate in the driving bottom box 33, and during the rotation process, the two groups of transmission threaded rods 427 are driven to rotate synchronously through the driving coupling group 34.

[0031] As a preferred embodiment, a welding device and method for fitness equipment elbow fittings is provided, the welding method comprising the following steps: Step 1: First, adjust the position of the mobile clamping assembly 3 according to the bending degree of the connecting elbow by sliding the sliding base 321 in the adjustment slot 311, and rotate the mobile support connecting frame 32 in the adjustment slot 311 to a suitable position by the sliding base 321; Step 2: During the adjustment and movement process, the connection between the two sets of driving bottom boxes 33 is maintained through the telescopic action of the telescopic shaft 341 and the telescopic sleeve 342, and the rotation action of the two sets of universal joints 343; Step 3: After the adjustment is completed, the two sets of pipes to be connected are respectively inserted into the movable support connecting frame 32 and the fixed support connecting frame 42, and the ends of the two sets of pipes to be welded are spliced ​​and aligned; Step 4: Then, the clamping motor 35 is started to drive the fixed support connecting frame 42 and the movable support connecting frame 32 to clamp the pipe fitting. By driving the rotating connecting ring 422 to rotate, the rotating connecting ring 422 drives the three sets of adjusting connecting rods 425 to slide and rotate. During the rotation process, the three sets of fixed pressing wheels 426 press and fix the pipe fitting; Step 5: After the clamping and fixing is completed, the welding robot arm 1 is first used to drive the welding head 11 to perform electric welding and fixation at the joints of the two sets of pipe fittings. After the fixation is completed, the fixed pressure wheel 426 is driven by the driving motor 43 to rotate, and the fixed pressure wheel 426 drives the pipe fitting to rotate, thereby performing rotary welding during the rotation process to weld and seal the interface.

[0032] The working process of the present application is as follows: first, the position of the mobile clamping assembly 3 can be adjusted according to the bending degree of the connecting elbow, and the mobile support connecting frame 32 can slide and move in the adjustment slide groove 311 of the mobile connecting platform 31 through the sliding base 321. The sliding base 321 can be rotated and adjusted in the adjustment slide groove 311 through the rotating shaft, thereby adjusting the direction and position of the mobile support connecting frame 32. During the adjustment and movement process, the connection between the two sets of driving bottom boxes 33 is maintained by the telescopic action of the telescopic shaft 341 and the telescopic sleeve 342, and the rotation action of the two sets of universal joint groups 343; After the adjustment is completed, the two sets of pipe fittings to be connected are respectively inserted into the movable support connecting frame 32 and the fixed support connecting frame 42, and the ends of the two sets of pipe fittings to be welded are spliced ​​and aligned. Then, the clamping motor 35 is started to drive the fixed support connecting frame 42 and the movable support connecting frame 32 to clamp the pipe fittings. The rotating connecting ring 422 is driven to rotate, and the rotating connecting ring 422 drives the three sets of adjusting connecting rods 425 to slide and rotate. During the rotation process, the three sets of fixed pressing wheels 426 press the pipe fittings tightly and securely. The clamping motor 35 drives the transmission shaft 344 to rotate, and the transmission shaft 344 drives the connected active bevel gear 345 to rotate. The active bevel gear 345 drives the transmission bevel gear 4271 and the connected transmission threaded rod 427 to rotate in the driving bottom box 33. During the rotation, the two sets of transmission threaded rods 427 are driven to rotate synchronously through the driving coupling assembly 34. The transmission threaded rod 427 drives the transmission nut seat 4221 to move, and the transmission nut seat 4221 drives the rotating connecting ring 422 to rotate during the movement. The rotating connecting ring 422 drives the adjusting sleeve 424 to rotate, and the adjusting sleeve 424 drives the adjusting link 425 to rotate and adjust in the clamping groove 4231 during the rotation process. The clamp connecting frame 421 forms a centering clamp structure through three groups of adjusting links 425. The centering clamp ensures that the centers of the two groups of pipes are on the same straight line, so that the interfaces of the two groups of pipes can be aligned. After the clamping and fixing is completed, the welding robot arm 1 first drives the welding head 11 to perform electric welding and fixation at the joints of the two sets of pipe fittings. After the fixation is completed, the fixed pressure wheel 426 is driven to rotate by the driving motor 43, and the fixed pressure wheel 426 drives the pipe fitting to rotate, thereby performing rotary welding during the rotation process to weld and seal the interface.

[0033] Finally: The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A welding device for a fitness equipment elbow fitting, comprising a welding robot arm (1) and a welding table (2), characterized in that: A welding head (11) is provided at one end of the welding robot arm (1), a movable clamping assembly (3) and a fixed clamping assembly (4) are connected to the top of the welding table (2), and a supporting column (5) is connected between the movable clamping assembly (3) and the fixed clamping assembly (4) and the welding table (2); The movable clamping assembly (3) comprises a movable connecting platform (31) and a movable supporting connecting frame (32), and the fixed clamping assembly (4) comprises a fixed connecting platform (41) and a fixed supporting connecting frame (42), the bottoms of the movable connecting platform (31) and the fixed connecting platform (41) are both connected to a driving bottom box (33), and a driving coupling group (34) is connected between the two groups of the driving bottom boxes (33), and a clamp connecting frame (421) is provided in the movable supporting connecting frame (32) and the fixed supporting connecting frame (42).

2. A welding device for elbow fittings of fitness equipment according to claim 1, characterized in that: The movable clamping assembly (3) and the fixed clamping assembly (4) are symmetrical to each other, the fixed support connecting frame (42) is fixedly connected to the top of the fixed connecting platform (41), the top of the movable connecting platform (31) is provided with an adjustment slide (311), the bottom of the movable support connecting frame (32) is connected to a sliding base (321), and the sliding base (321) is slidably connected to the adjustment slide (311) via a rotating shaft.

3. The welding device for elbow fittings of fitness equipment according to claim 1, characterized in that: A circular hole is provided inside the clamp connecting frame (421), and a rotating connecting ring (422) is inserted into the inside of the clamp connecting frame (421) via a bearing. A limiting connecting ring (423) is welded to a side of the rotating connecting ring (422) away from the clamp connecting frame (421), and the rotating connecting ring (422) and the limiting connecting ring (423) have the same inner diameter.

4. A welding device for elbow fittings of fitness equipment according to claim 3, characterized in that: The rotating connecting ring (422) and the limiting connecting ring (423) are provided with three groups of clamping grooves (4231) arranged in a circular array, and the center position of the clamping groove (4231) is connected to an adjusting sleeve (424) via a rotating shaft, and an adjusting connecting rod (425) is inserted into the adjusting sleeve (424).

5. A welding device for elbow fittings of fitness equipment according to claim 4, characterized in that: One end of the adjusting link (425) is connected to one side of the clamp connecting frame (421) via a rotating shaft, and the end of the adjusting link (425) away from the clamp connecting frame (421) is connected to a fixed pressure wheel (426) via a rotating shaft, and the side of the fixed support connecting frame (42) away from the clamp connecting frame (421) is connected to a driving motor (43).

6. The welding device for elbow fittings of fitness equipment according to claim 5, characterized in that: A driving chassis (431) is connected between the driving motor (43) and the fixed support connecting frame (42); a set of fixed pressure rollers (426) in the fixed support connecting frame (42) are plugged with pressure roller rotating shafts (4261); and the pressure roller rotating shafts (4261) and the output shaft of the driving motor (43) are connected in the driving chassis (431) via a belt.

7. A welding device for elbow fittings of fitness equipment according to claim 6, characterized in that: The outer side of the rotating connection ring (422) is connected to a transmission nut seat (4221), and a transmission threaded rod (427) is inserted into the transmission nut seat (4221). One end of the transmission threaded rod (427) is connected to the driving bottom box (33), and the transmission threaded rod (427) is fixedly connected to the clamp connection frame (421).

8. The welding device for elbow fittings of fitness equipment according to claim 7, characterized in that: The drive coupling assembly (34) comprises a telescopic shaft (341), a telescopic sleeve (342), and two sets of universal joint assemblies (343), wherein the telescopic shaft (341) is inserted into the telescopic sleeve (342), and the two sets of universal joint assemblies (343) are respectively connected to one end of the telescopic shaft (341) and the telescopic sleeve (342), and a transmission shaft (344) is connected to the side of the universal joint assembly (343) away from the drive coupling assembly (34).

9. The welding device for elbow fittings of fitness equipment according to claim 8, characterized in that: The outer side of the transmission shaft (344) is sleeved with a driving bevel gear (345), the bottom end of the transmission threaded rod (427) is connected to a transmission bevel gear (4271), and the driving bevel gear (345) and the transmission bevel gear (4271) are meshed in a driving bottom box (33). A clamping motor (35) is connected to one side of the driving bottom box (33), and the output shaft of the clamping motor (35) is connected to the transmission shaft (344).

10. A welding method for a fitness equipment elbow fitting welding device, using the fitness equipment elbow fitting welding device according to any one of claims 1 to 9, characterized in that: The welding method comprises the following steps: Step 1: First, the position of the movable clamping assembly (3) is adjusted according to the degree of bending of the connecting elbow, and the sliding base (321) is slid in the adjustment slot (311), and the movable support connecting frame (32) can be rotated in the adjustment slot (311) to a suitable position by the sliding base (321); Step 2: During the adjustment and movement process, the connection between the two sets of driving bottom boxes (33) is maintained through the telescopic movement of the telescopic shaft (341) and the telescopic sleeve (342), and the rotation of the two sets of universal joints (343); Step 3: After the adjustment is completed, the two sets of pipes to be connected are respectively inserted into the movable support connecting frame (32) and the fixed support connecting frame (42), and the ends of the two sets of pipes to be welded are spliced ​​and aligned; Step 4: Then, the clamping motor (35) is started to drive the fixed support connecting frame (42) and the movable support connecting frame (32) to clamp the pipe fitting, and the rotating connecting ring (422) is driven to rotate, and the rotating connecting ring (422) drives the three sets of adjustment connecting rods (425) to slide and rotate, and during the rotation process, the three sets of fixed pressing wheels (426) press and fix the pipe fitting; Step 5: After the clamping and fixing is completed, the welding robot arm (1) first drives the welding head (11) to perform electric welding and fixing at the joint of the two sets of pipe fittings. After the fixing is completed, the fixed pressure wheel (426) is driven to rotate by the driving motor (43), and the fixed pressure wheel (426) drives the pipe fitting to rotate, thereby performing rotation welding during the rotation process to weld and seal the interface.

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