Inflatable shaft welding equipment

Abstract

The invention relates to inflatable shaft welding equipment, and belongs to the technical field of automatic welding equipment.The inflatable shaft welding equipment is characterized in that supporting and limiting devices, a driving device and a welding part are connected to the working face of a base, and each supporting and limiting device comprises a first rotating frame and a pair of rotating wheels connected to the first rotating frame; a plurality of connecting holes are formed in the first rotating frame, the rotating wheels are connected into the corresponding connecting holes through the rotating shafts, the driving device comprises a driving part and a detecting part, the driving part is provided with a first driving source, a first transmission belt structure and a second transmission belt structure, and the second transmission belt structure makes contact with the inflatable shaft and drives the inflatable shaft to rotate; the detection part is used for detecting the number of turns of rotation of the inflatable shaft. The welding part comprises a welding gun and an output structure for driving the welding gun to move. The full-automatic welding device has the advantages that the adjustable supporting, driving and welding parts are integrated, full-automatic welding is achieved, the device adapts to workpieces of different sizes, and efficiency and precision are remarkably improved; the follow-up auxiliary structure provides dynamic multi-point support, warping vibration of the long shaft is effectively restrained, and the stability of the welding process and the forming quality are guaranteed.

Description

Technical Field

[0001] This application relates to the technical field of automatic welding equipment, and in particular to an air shaft welding device. Background Technology

[0002] Currently, air shafts, as a common transmission component, typically require circumferential welding to connect their shaft body and shaft head. Traditional welding methods rely heavily on manual operation, where one operator holds the welding torch while another operator or simple tooling assists in rotating the workpiece. This method has significant drawbacks: firstly, maintaining a uniform rotation speed is difficult, and the welding torch position depends on the operator's experience, resulting in inconsistent weld quality; secondly, it is labor-intensive and inefficient; and thirdly, for longer air shafts, vibration and deflection deformation during rotation further affect weld quality and precision.

[0003] In related technologies, there are some automated welding equipment for shaft parts, but these devices are usually complex in structure and have limited adaptability to the size of the workpiece. In particular, when supporting and driving long shaft parts, it is difficult to effectively suppress the vibration and deformation during their rotation, which makes it difficult to guarantee the welding accuracy.

[0004] Regarding the aforementioned technologies, the inventors believe that the following defects exist: the existing technology lacks a dedicated automated equipment that can adaptively adjust to different sizes, and in particular, can effectively support and stably drive long shaft components for high-precision circumferential welding. Summary of the Invention

[0005] To address the issues of reliance on manual labor, low efficiency, and difficulty in ensuring precision in air shaft welding, this application provides an air shaft welding device.

[0006] The gas shaft welding equipment provided in this application adopts the following technical solution: a gas shaft welding equipment includes a base, and the working surface of the base is connected to: at least two support and limiting devices for supporting the gas shaft body; a drive device for driving the gas shaft to rotate; and a welding part for welding the gas shaft. Each of the support limiting devices includes a first rotating frame and a pair of rotating wheels connected to the first rotating frame. The first rotating frame has a plurality of connecting holes, and the rotating wheels are connected to the corresponding connecting holes through rotating shafts. The driving device includes a driving unit and a detection unit. The driving unit has a first driving source, a first transmission belt structure driven by the first driving source, and a second transmission belt structure that is connected to the first transmission belt structure via a rotating shaft. The second transmission belt structure contacts the air shaft and drives it to rotate. The detection unit is used to detect the number of rotations of the air shaft. The welding section includes a welding torch and an output structure that drives the welding torch to move.

[0007] By adopting the above technical solution, the supporting limiting device, the driving device and the welding part work together to build an air shaft welding platform. The integrated design realizes the automated operation of air shaft circumferential welding, effectively replacing the manual support and rotation of the workpiece, and significantly improving welding efficiency, consistency and quality.

[0008] Preferably, the first rotating frame is slidably connected to the working surface of the base via a first sliding seat, and a fixing device is connected to the first sliding seat to position the first rotating frame on the base.

[0009] By adopting the above technical solution, the first rotating frame achieves a sliding connection with the base through the first sliding seat, allowing the position of the support limiting device to be flexibly adjusted according to the length of the air shaft. The fixing device ensures that the position is securely locked after adjustment, guaranteeing the stability of the support point during welding and thus adapting to the processing requirements of workpieces of different specifications.

[0010] Preferably, the fixing device includes a limiting box fixedly connected to the first sliding seat, the base is provided with a sliding groove and a sliding hole communicating with the sliding groove, and a first toothed plate is fixedly connected to the bottom wall of the base; A first clamping element is threaded onto the top wall of the limiting box. The end of the first clamping element extends into the limiting box and abuts against a connecting block. A connecting rod is fixedly connected to the side of the connecting block away from the first clamping element. The connecting rod is inserted into the bottom wall of the limiting box. A toothed limiting seat is fixedly connected to the bottom end of the connecting rod. The teeth of the limiting seat mesh with a first toothed plate. A return spring is provided around the connecting rod. The return spring connects the connecting block and the bottom wall of the limiting box.

[0011] By adopting the above technical solution, the fixing device uses a structure combining mechanical engagement and elastic reset. When movement is required, the first clamping element is loosened for easy sliding. When locking is required, the first clamping element is tightened, and the connecting block and connecting rod are pressed down, so that the teeth of the limiting seat tightly engage with the first toothed plate, achieving precise and secure mechanical locking.

[0012] Preferably, at least two second sliding seats are slidably connected to the base, and a first driving member is fixedly connected to the second sliding seat. The output shaft of the first driving member is fixedly connected to the first sliding seat. The output structure is connected to the second sliding seat and includes a longitudinal seat fixedly connected to the second sliding seat. A second driving member is fixedly connected to the side of the longitudinal seat away from the support limiting device. A connecting frame is fixedly connected to the output of the second driving member. A third driving member is fixedly connected to the upper part of the connecting frame. A slider that slides on the connecting frame is fixedly connected to the output of the third driving member. A positioning frame is fixedly connected to the side of the slider away from the connecting frame. A connecting shaft is inserted into the positioning frame. A second clamping element that limits the position of the connecting shaft is connected to the positioning frame. A rotating part is connected to the end of the connecting shaft. A clamping seat is connected to the output end of the rotating part. The clamping seat is used to fix the welding gun. The rotating part includes a rotating box fixedly connected to the end of the connecting shaft. A second drive source is fixedly connected to the inner wall of the rotating box. The output shaft of the second drive source passes through the rotating box and is connected to the clamping seat.

[0013] By adopting the above technical solution, the first driving component can drive the first sliding seat to move, thereby macroscopically adjusting the distance between the two support limiting devices. The output structure provides the welding torch with multi-degree-of-freedom precision adjustment capability in space: the second driving component can drive the welding torch to move laterally, the third driving component can drive the welding torch to move longitudinally, the connecting shaft can realize coarse adjustment of the welding torch angle around its axis, and the second driving source in the rotating part can realize fine adjustment of the welding torch posture. Together, these enable the welding torch's posture to be precisely aligned with the weld position from all directions.

[0014] Preferably, a connecting seat is fixedly connected to the working surface of the base, a third sliding seat is slidably connected to the surface of the connecting seat, a fourth driving member for driving the third sliding seat to move is fixedly connected to the surface of the connecting seat, and the driving device is connected to the surface of the third sliding seat.

[0015] By adopting the above technical solution, the drive device is integrally connected to the connecting seat via the third sliding seat, and can be driven to move along the connecting seat by the fourth drive component. This allows the drive device to perform overall horizontal displacement according to the length of the air shaft and the welding start position, ensuring that its transmission components can accurately move to and reliably contact the parts of the shaft that need to be driven, thus enhancing the adaptability of the equipment.

[0016] Preferably, the driving device further includes a second rotating frame fixedly connected to the third sliding seat, a rotating shaft connected to the second rotating frame, a rotating seat rotatably connected to the side wall of the second rotating frame, and the first transmission belt structure and the second transmission belt structure respectively connected to the second rotating frame and the rotating seat.

[0017] By adopting the above technical solution, the second rotating frame provides a stable mounting base for the entire drive unit. The rotating shaft, as a key transmission component, is mounted on it. The rotating seat is rotatably connected to the second rotating frame, allowing the angle of the second transmission belt structure mounted on it to be adjusted. This ensures that the second transmission belt structure can adapt to air shafts of different diameters and always maintains optimal contact with the shaft surface, guaranteeing transmission efficiency and stability.

[0018] Preferably, the first transmission belt structure includes a first driven pulley and a first driving pulley, the first driven pulley is fixedly connected to the rotating shaft, the first driving pulley is fixedly connected to the first driving source, and the first driven pulley and the first driving pulley are connected by a first flexible member; The second transmission belt structure includes a second driven pulley and a second driving pulley, as well as a tension pulley. The second driven pulley is fixedly connected to the end of the rotating shaft away from the first driven pulley. The second driven pulley and the second driving pulley are connected by a second flexible member. The second driving pulley and the tension pulley are both rotatably connected to the rotating seat.

[0019] By adopting the above technical solution, the power of the first drive source is transmitted to the rotating shaft through the first transmission belt structure, and then the rotating shaft drives the second transmission belt structure. This two-stage transmission design rationally arranges the drive source and the final actuator in space, resulting in a compact structure. The tensioning pulley ensures that the second flexible component has appropriate tension, preventing transmission slippage and thus ensuring that the air shaft can obtain smooth and reliable rotational drive.

[0020] Preferably, the detection unit includes a fixed frame fixedly connected to the side of the second rotating frame near the fourth driving member, a rotating arm rotatably connected to the fixed frame, a detection shaft rotatably connected to the rotating arm, and a detection wheel and an encoder respectively connected to both ends of the detection shaft.

[0021] By adopting the above technical solution, the inspection unit employs a non-contact inspection principle. When the drive unit approaches the air shaft, the inspection wheel contacts the shaft body under its own weight or slight elastic force. As the air shaft rotates, friction drives the inspection wheel to rotate synchronously, and the rotation of the inspection wheel is transmitted to the encoder through the inspection shaft. The encoder converts the physical rotation into a precise electrical signal, thereby detecting and recording the number of rotations of the air shaft in real time and accurately, providing crucial position feedback for the automated control of the welding process.

[0022] Preferably, the output structure's slider is further connected to an auxiliary structure, including a positioning seat slidably connected to the side of the connecting frame near the base. The positioning seat is connected to the slider via a positioning transmission frame. A connecting box is fixedly connected to the side of the positioning seat away from the positioning transmission frame. A fixed cylinder is inserted into the inner wall of the connecting box. Several rotating holes are opened on the inner wall of the fixed cylinder. A transmission shaft is rotatably connected to the inner wall of the rotating holes. A drive arm is connected to the transmission shaft. A positioning wheel is rotatably connected to the other end of the drive arm.

[0023] By adopting the above technical solution, the sliders of the auxiliary structure and the output structure are linked and can rise and fall synchronously with the welding torch. The auxiliary structure, through multiple deployable positioning wheels, can provide additional radial support for the air shaft with a large length-to-diameter ratio from the side or below. During the welding process, this multi-point auxiliary support can effectively suppress vibration, runout, and deflection deformation caused by the shaft's own weight or rotation, thereby greatly improving the process stability and machining accuracy when welding long shaft parts.

[0024] Preferably, a missing gear is fixedly connected to the outer wall of the transmission shaft, the drive arm is fixedly connected to the smooth part of the missing gear, several missing gears are rotatably connected by an internal gear, an external tooth is fixedly connected to the outer wall of the internal gear, a second tooth plate is meshed on the external tooth, the second tooth plate is slidably connected to the inner wall of the connecting box, and a fifth driving member for driving the second tooth plate to move is fixedly connected to one side of the second tooth plate.

[0025] By adopting the above technical solution, the second gear plate is driven to move linearly by a fifth driving component, which in turn drives the internal gear to rotate. The internal gear simultaneously drives all meshing missing gears to rotate synchronously. Since the driving arms are fixed to the missing gears, all driving arms and the positioning wheels at their ends can achieve strictly synchronized expansion or contraction. This linkage mechanism achieves coordinated action of multiple actuators with a simple single power input, featuring an ingenious structure, easy control, and ensuring the uniformity and consistency of the auxiliary support force applied.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. A complete automated welding platform is constructed through the integrated setup of the support and limiting device, drive device, and welding unit. The position and wheel spacing of the support and limiting device are adjustable, allowing it to adapt to air shafts of different lengths and diameters; the drive device, through a movable and angle-adjustable belt drive structure, can reliably drive the shaft to rotate at a uniform speed and accurately count; the welding unit has multi-degree-of-freedom adjustment capabilities, enabling precise positioning of the welding torch. This system replaces traditional manual operation, achieving full automation from clamping and driving to welding, significantly improving welding efficiency, consistency, and precision. 2. By setting up an auxiliary structure, which can move with the welding torch, dynamic, multi-point auxiliary support is provided for air shafts that may tilt or have a large length-to-diameter ratio after the shaft head is installed. This effectively counteracts the workpiece's posture imbalance, vibration, and deflection deformation caused by center of gravity shift or its own weight, ensuring the stability of long shaft parts during high-speed rotation welding, thereby guaranteeing high-quality weld formation. Attached Figure Description

[0027] Figure 1 This is a perspective view of an embodiment of this application.

[0028] Figure 2 This is regarding the embodiments of this application. Figure 1 A magnified view at point A.

[0029] Figure 3 This is a perspective view of the drive unit in the drive device according to an embodiment of this application.

[0030] Figure 4 This is a perspective view of the detection unit in the drive device according to an embodiment of this application.

[0031] Figure 5 This is a perspective view of the welded portion in an embodiment of this application.

[0032] Figure 6 This is a perspective view of the rotating part in an embodiment of this application.

[0033] Figure 7 This is a perspective view of the auxiliary structure in an embodiment of this application.

[0034] Figure 8 This is a structural diagram of the auxiliary structure in an embodiment of this application.

[0035] Explanation of reference numerals in the attached drawings: 1. Base; 11. Support and limiting device; 111. First rotating frame; 112. Rotating wheel; 113. Connecting hole; 12. Drive device; 121. Drive unit; 1211. First drive source; 1212. First transmission belt structure; 1213. Second transmission belt structure; 122. Detection unit; 13. Welding unit; 131. Welding torch; 132. Output structure; 21. First sliding seat; 22. Fixing device; 221. Limiting box; 222. Slide groove; 223. Slide hole; 224. 225. Toothed plate; 226. First clamping element; 227. Connecting block; 228. Connecting rod; 229. Limiting seat; 2281. Toothed part; 220. Return spring; 31. Second sliding seat; 32. First driving member; 1321. Longitudinal seat; 1322. Second driving member; 1323. Connecting frame; 1323a. Longitudinal part; 1323b. Transverse part; 1324. Third driving member; 1325. Slider; 1326. Positioning frame; 1327. Connecting shaft; 1328. Second clamping element; 1329. 13291 Rotating part; 13292 Rotating box; 13292 Second drive source; 1330 Clamping seat; 1330a Clamping arc half seat; 41 Connecting seat; 42 Third sliding seat; 43 Fourth drive member; 51 Second rotating frame; 511 Rotating shaft; 52 Rotating seat; 53 Sixth drive member; 1214 First driven wheel; 1215 First drive wheel; 1216 Second driven wheel; 1217 Second drive wheel; 1218 Tensioning wheel; 1221 Fixed frame; 1222 Rotating arm ; 1223, Detection shaft; 1224, Detection wheel; 1225, Encoder; 1226, Connecting spring; 61, Auxiliary structure; 611, Positioning seat; 612, Positioning transmission frame; 613, Connecting box; 614, Fixed cylinder; 615, Rotating hole; 616, Transmission shaft; 617, Drive arm; 618, Positioning wheel; 619, Missing gear; 6110, Internal gear; 6111, External gear; 6112, Second gear plate; 6113, Fifth driving component; 6114, Third rotating frame; 7, Controller. Detailed Implementation

[0036] The following is in conjunction with the appendix Figure 1-8 This application will be described in further detail.

[0037] Example 1: Reference Figure 1 and Figure 2This embodiment provides a gas shaft welding device, including a base 1. Two symmetrical support and limiting devices 11 are arranged along the length of the working surface of the base 1 to support the shaft body of the gas shaft. Each support and limiting device 11 includes a first rotating frame 111, a rotating wheel 112, and a first sliding seat 21. A slide rail is fixedly connected to the top of the base 1, and the first sliding seat 21 is slidably connected to the slide rail. The first rotating frame 111 has several symmetrically arranged connecting holes 113. Each rotating wheel 112 is fixedly connected to a rotating shaft. Based on the diameter of the gas shaft, a corresponding connecting hole 113 is selected, and the rotating shaft on the rotating wheel 112 is rotatably connected to the connecting hole 113.

[0038] The top of the first sliding seat 21 is connected to a fixing device 22 for locking it in any position, thereby ensuring that it will not spontaneously displace during processing. Specifically, the fixing device 22 includes a limiting box 221, a first clamping element 225, a connecting block 226, a connecting rod 227, and a limiting seat 228. Correspondingly, a sliding groove 222 is provided at the front end of the base 1, and a first toothed plate 224 is fixedly connected to the bottom wall of the sliding groove 222. At the same time, a sliding hole 223 communicating with the sliding groove 222 is provided on the top wall of the sliding groove 222. The limiting box 221 is fixedly connected to the top of the first sliding seat 21. The first clamping element 225 is a Torx handle screw. The connecting block 226 is slidably connected to the inner wall of the limiting box 221. The connecting rod 227 is inserted into the bottom wall of the limiting box 221. It should be noted that the threaded part of the first clamping element 225 extends into the limiting box 221, and the end of the first clamping element 225 abuts against the top of the connecting block 226. A return spring 229 is provided around the connecting rod 227. The top and bottom ends of the return spring 229 are fixedly connected to the bottom end of the connecting block 226 and the bottom wall of the limiting box 221, respectively. The connecting rod 227 is slidably connected in the sliding hole 223. The bottom end of the sliding hole 223 passes through the sliding hole 223 and is fixedly connected to the limiting seat 228. The limiting seat 228 is located in the sliding groove 222, and the bottom of the limiting seat 228 is fixedly connected to the toothed part 2281. The tooth 2281 can mesh on the first tooth plate 224.

[0039] Operating principle: When movement is required, loosen the first clamping element 225, and the spring force of the return spring 229 pushes the limiting seat 228 upward, causing its teeth 2281 to disengage from the first toothed plate 224; when locking is required, tighten the first clamping element 225, which presses down the connecting block 226 and the connecting rod 227, so that the teeth 2281 of the limiting seat 228 are tightly engaged with the first toothed plate 224, achieving a firm mechanical lock.

[0040] Two second sliding seats 31 are slidably connected to the base 1, and the two second sliding seats 31 are respectively arranged on the outer side of the corresponding first rotating frame 111. A first driving member 32 (a self-locking electric actuator) is fixedly installed on each second sliding seat 31, and the output shaft of the first driving member 32 is fixedly connected to the first sliding seat 21. Therefore, by connecting the first sliding seat 21 and the second sliding seat 31 on the same side through the first driving member 32, when the first sliding seat 21 moves according to the size of the air shaft, the second sliding seat 31 can move with it; at the same time, controlling the first driving member 32 can change the distance between the first sliding seat 21 and the second sliding seat 31.

[0041] Reference Figure 3 The device also includes a drive unit 12 for driving the air shaft to rotate. The drive unit 12 includes a connecting seat 41 fixedly connected to the middle of the working surface of the base 1, a third sliding seat 42 slidably connected to the rear of the working surface of the connecting seat 41, a fourth drive member 43 (selected as an electric actuator) fixedly connected to the front of the working surface of the connecting seat 41, the output shaft of the fourth drive member 43 fixedly connected to the third sliding seat 42, a second rotating frame 51 fixedly connected to the top of the connecting seat 41, a rotating seat 52 pivotally connected to the side wall of the second rotating frame 51, the rotating seat 52 being sleeved on the rotating shaft 511, and a drive unit 121 and a detection unit 122 connected to the second rotating frame 51.

[0042] The drive unit 121 includes a first drive source 1211, a first transmission belt structure 1212, and a second transmission belt structure 1213. A rotating shaft 511 is rotatably connected to the upper part of a second rotating frame 51 via bearings. The first drive source 1211 and the first transmission belt structure 1212 are connected to the side of the second rotating frame 51 away from the rotating seat 52, and the second transmission belt structure 1213 is connected to the side of the rotating seat 52 away from the second rotating frame 51. Specifically, the first transmission belt structure 1212 includes a first driven pulley 1214 fixedly mounted on the rotating shaft 511. The first drive source 1211 (in this embodiment, a geared motor) is fixedly connected to the second rotating frame 51 via a motor mount. A first drive wheel 1215 is fixedly connected to the output shaft of the first drive source 1211. The first driven pulley 1214 and the first drive wheel 1215 are connected by a first flexible element. It should be noted that the first driven pulley 1214 and the first drive wheel 1215 are synchronous pulleys, and the first flexible element is a synchronous belt.

[0043] Reference Figure 4The second transmission belt structure 1213 includes a second driven pulley 1216 fixedly mounted on the other end of the rotating shaft 511. A second drive pulley 1217 is rotatably connected to the side (front) of the rotating seat 52 away from the second driven pulley 1216. The second drive pulley 1217 and the second driven pulley 1216 are connected by a second flexible element. It should be noted that the second drive pulley 1217 and the second driven pulley 1216 are synchronous belt pulleys, and the second flexible element is a synchronous belt. At the same time, a tensioning pulley 1218 is rotatably connected to the side of the rotating seat 52 away from the first drive source 1211. The tensioning pulley 1218 abuts against the outer wall of the second flexible element to tension the second flexible element.

[0044] The principle achieved is as follows: When the first drive source 1211 is activated, its output shaft drives the first drive wheel 1215 to rotate. The first drive wheel 1215 drives the first driven wheel 1214 to rotate via the first flexible element (synchronous belt), thereby driving the second driven wheel 1216, which is fixed on the same rotating shaft 511, to rotate synchronously. The second driven wheel 1216 then drives the second drive wheel 1217 to rotate via the second flexible element (synchronous belt). The tension wheel 1218 presses against the second flexible element, providing it with a stable tension force to ensure reliable power transmission. Finally, the moving second drive wheel 1217 contacts the surface of the air shaft through the second flexible element, driving the air shaft to rotate at a constant speed by friction.

[0045] Finally, a sixth drive unit 53 (selected as an electric actuator with a self-locking function) is hinged to the rear of the top of the connecting base 41, and the output rod of the sixth drive unit 53 is hinged to the rear end of the rotating base 52. Thus, when the sixth drive unit 53 is running, it can drive the rotating base 52 to rotate together.

[0046] The detection unit 122 includes a fixed frame 1221, a rotating arm 1222, a detection shaft 1223, a detection wheel 1224, and an encoder 1225. The fixed frame 1221 is fixedly connected to the side of the second rotating frame 51 near the fourth driving member 43. The detection shaft 1223 is rotatably connected to the front of the rotating arm 1222 via a bearing. The output shaft of the encoder 1225 is fixedly connected to one end of the detection shaft 1223. The encoder 1225 is fixedly connected to the rotating arm 1222. The detection wheel 1224 is fixedly connected to the end of the detection shaft 1223 away from the encoder 1225. In order to allow the rotating arm 1222 to return to its original position, a connecting spring 1226 is hinged to the side of the rotating arm 1222 away from the base 1. The other end of the connecting spring 1226 is hinged to the fixed frame 1221. Furthermore, when the drive unit 12 moves toward the air shaft, the detection wheel 1224 contacts the shaft body under a slight elastic force and rotates with it. The encoder 1225 accurately records the number of rotations through the detection shaft 1223. It should be noted that the detection wheel 1224 makes better contact with the air shaft body, and the rotating arm 1222 rotates downward, which at the same time stretches the corresponding connecting spring 1226.

[0047] Reference Figure 5 The surfaces of the second sliding seats 31 on both sides are also connected to welding parts 13. Welding parts 13 include welding torch 131 and output structure 132 for driving the welding torch 131 to move. The welding torch 131 is connected to an external welding machine through a connecting pipe, and the welding machine supplies cutting fuel to the welding torch 131 as it operates.

[0048] The output structure 132 includes a longitudinal seat 1321 fixedly connected to the surface of the second sliding seat 31. A second driving member 1322 (selected as an electric slide rail with self-locking function) is fixedly connected to the side of the longitudinal seat 1321 away from the first sliding seat 21. A connecting frame 1323 is connected to the driving member of the second driving member 1322. The connecting frame 1323 includes a longitudinal part 1323a fixedly connected to the driving member and a transverse part 1323b fixedly connected to the side of the longitudinal part 1323a away from the longitudinal seat 1321. A slider 1325 is slidably connected to the top of the transverse part 1323b. A third driving member 1324 (selected as an electric drive rod with self-locking function) is fixedly connected to one side of the slider 1325. The third driving member 1324 is fixedly connected to the transverse part 1323b. A ring-shaped positioning frame 1326 is fixedly connected to the side of the slider 1325 away from the transverse portion 1323b. A connecting shaft 1327 is inserted into the positioning frame 1326. A second clamping element 1328 (using a Torx screw) is threaded onto the outer wall of the positioning frame 1326. The threaded end of the second clamping element 1328 passes through the positioning frame 1326 and abuts against the connecting shaft 1327. A rotating portion 1329 is connected to the end of the connecting shaft 1327 near the first sliding seat 21. (Refer to...) Figure 6 The rotating part 1329 includes a rotating box 13291 fixedly connected to the end of the connecting shaft 1327. A second drive source 13292 is fixedly connected to the inner wall of the rotating box 13291. The second drive source 13292 (selected as a geared motor with self-locking function) has an output shaft that passes through the side wall of the rotating box 13291 and is connected to a clamping seat 1330. The clamping seat 1330 includes two clamping arc half seats 1330a. One clamping arc half seat 1330a is fixedly connected to the output shaft of the second drive source 13292. The other clamping arc half seat 1330a is fixedly connected to the output shaft of the second drive source 13292 by several bolts. The nozzle of the welding torch 131 is fixed by bringing the two clamping arc half seats 1330a closer to each other and tightening them with bolts.

[0049] The second drive component 1322, the third drive component 1324, the connecting shaft 1327, and the second drive source 13292 drive the slider 1325 to run, and the welding torch 131 can achieve precise position and attitude adjustment with multiple degrees of freedom in space to accurately align the weld seam.

[0050] Example 2: In actual operation, when the shaft head to be welded is installed at the end of the shaft body, the overall center of gravity will shift significantly. With only two ends supported, the shaft body at the end where the shaft head is installed is very prone to tilting upwards due to the additional load on that side, causing the workpiece to be unable to maintain a horizontal and stable state. This imbalance not only causes poor transmission contact between the drive device 12 and the shaft body, but also seriously affects the alignment accuracy between the welding torch 131 and the circumferential seam, making it impossible to carry out the welding operation normally.

[0051] Reference Figure 7 and Figure 8 In this embodiment, an auxiliary structure 61 is connected to the slider 1325 of the output structure 132. The auxiliary structure 61 includes a positioning seat 611, a positioning transmission frame 612, a connecting box 613, and a fixing cylinder 614. The positioning seat 611 is slidably connected to the side of the transverse portion 1323b away from the slider 1325, and the positioning seat 611 and the slider 1325 are connected via the positioning transmission frame 612. The connecting box 613 is fixedly connected to the side of the positioning seat 611 away from the positioning transmission frame 612. A fixing cylinder 614 is inserted into the inner wall of the connecting box 613, and the inner wall of the fixing cylinder 614 points towards the side of the first slider 21. The inner wall of the fixing cylinder 614 has several rotating holes 615 circumferentially arranged, and a transmission shaft 616 is rotatably connected to the inner wall of each rotating hole 615. A missing gear 619 is fixedly connected to the outer wall of the drive shaft 616. The gear part of the missing gear 619 points to the inner wall of the connecting box 613. The smooth part of the missing gear 619 is away from the inner wall of the connecting box 613. A drive arm 617 is fixedly connected to the smooth part of the missing gear 619. A positioning wheel 618 is rotatably connected to the end of the drive arm 617.

[0052] A third rotating frame 6114 is fixedly connected to the outer wall of the fixed cylinder 614. An internal gear 6110 is rotatably connected to the third rotating frame 6114. The internal gear 6110 meshes with the gear portions of several missing gears 619. At the same time, an external tooth portion 6111 is fixedly connected to the outer wall of the internal gear 6110. A second toothed plate 6112 meshes with the external tooth portion 6111. A slide rail is fixedly connected to the inner wall of the connecting box 613. The second toothed plate 6112 is fixedly connected to the sliding block of the slide rail. In addition, a fifth driving member 6113 (selected as an electric actuator with locking function) is fixedly connected to one end of the second toothed plate 6112. The fifth driving member 6113 is fixedly connected to the inner wall of the connecting box 613.

[0053] Its working principle is as follows: When welding a long shaft, the shaft end is placed into the fixed cylinder 614, and then the fifth driving component 6113 is controlled to move, pushing the second toothed plate 6112 to move linearly. The second toothed plate 6112 drives the internal gear 6110 to rotate, and the internal gear 6110 simultaneously drives all the meshing gears 619 to rotate synchronously, thereby causing all the driving arms 617 and the positioning wheels 618 at the end to retract inward synchronously. During the retraction, several positioning wheels 618 will center and limit the shaft end, forming multi-point auxiliary support, effectively counteracting downward deformation and suppressing rotational vibration.

[0054] Finally, this device also includes a controller 7, which is electrically connected to various electrical devices appearing in this device, and is used for centralized control of the opening, closing, motion logic, and parameter settings of various electrical devices. The controller 7 is preferably a programmable logic controller (PLC). A preferred model is Mitsubishi FX5U-64MT / ES.

[0055] The specific implementation principle derived from both Example 1 and Example 2 is as follows: First, based on the diameter of the air shaft to be welded, the rotating shaft of the rotating wheel 112 is installed in the appropriate connecting hole 113 on the first rotating frame 111 to match the shaft diameter. Then, the first clamping element 225 of the fixing device 22 is loosened, and the two first sliding seats 21 are moved to adjust the distance between the two support limiting devices 11 until it matches the length of the air shaft body. Then, the first clamping element 225 is tightened so that the teeth of the limiting seat 228 mesh with the first toothed plate 224, firmly locking the support position. If the workpiece is a long shaft with a shaft end, when the shaft end is installed to the end of the shaft body, the shaft end may tilt due to the shift of the center of gravity. At this time, the auxiliary structure 61 is moved to the shaft head position by the output structure 132, and the fifth driving component 6113 is controlled to drive the second toothed plate 6112, which drives the internal gear 6110 and all missing gears 619 to rotate synchronously, so that multiple positioning wheels 618 retract inward, forming multi-point centering limit and auxiliary support for the shaft head, forcibly correcting and keeping the workpiece in a horizontal and stable state.

[0056] After the workpiece is stably placed, the fourth drive component 43 pushes the third sliding seat 42 and the entire drive device 12 toward the workpiece, causing the second flexible component (synchronous belt) of the second transmission belt structure 1213 to press against the shaft surface. Simultaneously, the sixth drive component 53 adjusts the angle of the rotating seat 52 to ensure good contact between the second flexible component and the shaft. Subsequently, the first drive source 1211 starts, and power is transmitted sequentially through the synchronous belt of the first transmission belt structure 1212, the rotating shaft 511, and the synchronous belt of the second transmission belt structure 1213, ultimately driving the air shaft to rotate at a uniform speed. During rotation, the detection wheel 1224 remains in contact with the shaft under the tension of the connecting spring 1226, and the encoder 1225 detects and provides feedback on the number of rotations in real time.

[0057] During welding, the second drive component 1322 and the third drive component 1324 drive the connecting frame 1323 to move laterally and the slider 1325 to move longitudinally, respectively, to coarsely adjust the spatial position of the welding torch 131. Loosening the second clamping element 1328 allows manual rotation of the connecting shaft 1327 for length adjustment. Then, the second drive source 13292 drives the clamping seat 1330 to finely adjust the posture of the welding torch 131, ultimately ensuring precise alignment of the welding torch 131 with the weld seam. The welding torch 131 is connected to an external welding machine via a connecting pipe, and the welding power is provided by the welding machine.

[0058] All of the above actions, including the spacing adjustment of the support limiting device 11, the forward and backward movement and angle adjustment of the drive device 12, the drive rotation of the air shaft, the multi-axis positioning and attitude adjustment of the welding torch 131, and the retraction and unfolding of the positioning wheel 618 of the auxiliary structure 61, are coordinated and controlled by the controller 7 (such as a PLC) according to a preset program, thereby realizing the fully automated operation from workpiece clamping, stable support, automatic drive rotation to precise welding.

[0059] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A gas shaft welding device, comprising a base (1), characterized in that: The working surface of the base (1) is connected to: at least two support limiting devices (11) for supporting the air shaft body; a drive device (12) for driving the air shaft to rotate; and a welding part (13) for welding the air shaft. Each of the support limiting devices (11) includes a first rotating frame (111) and a pair of rotating wheels (112) connected to the first rotating frame (111). The first rotating frame (111) has a plurality of connecting holes (113), and the rotating wheels (112) are connected to the corresponding connecting holes (113) through rotating shafts. The drive device (12) includes a drive unit (121) and a detection unit (122). The drive unit (121) has a first drive source (1211), a first transmission belt structure (1212) driven by the first drive source (1211), and a second transmission belt structure (1213) that is connected to the first transmission belt structure (1212) via a rotating shaft (511). The second transmission belt structure (1213) contacts the air shaft and drives it to rotate. The detection unit (122) is used to detect the number of rotations of the air shaft. The welding part (13) includes a welding torch (131) and an output structure (132) that drives the welding torch (131) to move.

2. The air shaft welding equipment according to claim 1, characterized in that: The first rotating frame (111) is slidably connected to the working surface of the base (1) via the first sliding seat (21). A fixing device (22) is connected to the first sliding seat (21) to position the first rotating frame (111) on the base (1).

3. The air shaft welding equipment according to claim 2, characterized in that: The fixing device (22) includes a limiting box (221) fixedly connected to the first sliding seat (21), a sliding groove (222) is provided on the base (1), and a sliding hole (223) communicating with the sliding groove (222). A first toothed plate (224) is fixedly connected to the bottom wall of the base (1). A first clamping element (225) is threaded onto the top wall of the limiting box (221). The end of the first clamping element extends into the limiting box (221) and abuts against a connecting block (226). A connecting rod (227) is fixedly connected to the side of the connecting block (226) away from the first clamping element (225). The connecting rod (227) is inserted into the bottom wall of the limiting box (221). A toothed limiting seat (228) is fixedly connected to the bottom end of the connecting rod (227). The teeth of the limiting seat (228) mesh with a first toothed plate (224). A return spring (229) is provided around the connecting rod (227). The return spring (229) is connected to the connecting block (226) and the bottom wall of the limiting box (221).

4. The air shaft welding equipment according to claim 2, characterized in that: At least two second sliding seats (31) are slidably connected to the base (1), and a first driving member (32) is fixedly connected to the second sliding seat (31). The output shaft of the first driving member (32) is fixedly connected to the first sliding seat (21). The output structure (132) is connected to the second sliding seat (31) and includes a longitudinal seat (1321) fixedly connected to the second sliding seat (31). A second driving member (1322) is fixedly connected to the side of the longitudinal seat (1321) away from the support limiting device (11). A connecting frame (1323) is fixedly connected to the output component of the second driving member (1322). A third driving member (1324) is fixedly connected to the upper part of the connecting frame (1323). A component that slides on the connecting frame (1323) is fixedly connected to the output component of the third driving member (1324). The slider (1325) is fixedly connected to a positioning frame (1326) on the side of the slider (1325) away from the connecting frame (1323). A connecting shaft (1327) is inserted into the positioning frame (1326). A second clamping element (1328) for limiting the connecting shaft (1327) is connected to the positioning frame (1326). A rotating part (1329) is connected to the end of the connecting shaft (1327). A clamping seat (1330) is connected to the output end of the rotating part (1329). The clamping seat (1330) is used to fix the welding gun (131). The rotating part (1329) includes a rotating box (13291) fixedly connected to the end of the connecting shaft (1327). A second drive source (13292) is fixedly connected to the inner wall of the rotating box (13291). The output shaft of the second drive source (13292) passes through the rotating box (13291) and is connected to the clamping seat (1330).

5. The air shaft welding equipment according to claim 2, characterized in that: A connecting seat (41) is fixedly connected to the working surface of the base (1). A third sliding seat (42) is slidably connected to the surface of the connecting seat (41). A fourth driving member (43) for driving the displacement of the third sliding seat (42) is fixedly connected to the surface of the connecting seat (41). The driving device (12) is connected to the surface of the third sliding seat (42).

6. The air shaft welding equipment according to claim 5, characterized in that: The drive device (12) further includes a second rotating frame (51) fixedly connected to the third sliding seat (42), a rotating shaft (511) connected to the second rotating frame (51), a rotating seat (52) rotatably connected to the side wall of the second rotating frame (51), and the first transmission belt structure (1212) and the second transmission belt structure (1213) respectively connected to the second rotating frame (51) and the rotating seat (52).

7. The air shaft welding equipment according to claim 6, characterized in that: The first transmission belt structure (1212) includes a first driven pulley (1214) and a first driving pulley (1215). The first driven pulley (1214) is fixedly connected to the rotating shaft (511), and the first driving pulley (1215) is fixedly connected to the first driving source (1211). The first driven pulley (1214) and the first driving pulley (1215) are connected by a first flexible member. The second transmission belt structure (1213) includes a second driven pulley (1216), a second driving pulley (1217), and a tension pulley (1218). The second driven pulley (1216) is fixedly connected to one end of the rotating shaft (511) away from the first driven pulley (1214). The second driven pulley (1216) and the second driving pulley (1217) are connected by a second flexible member. The second driving pulley (1217) and the tension pulley (1218) are both rotatably connected to the rotating seat (52).

8. The air shaft welding equipment according to claim 6, characterized in that: The detection unit (122) includes a fixed frame (1221) fixedly connected to the second rotating frame (51) on the side near the fourth driving member (43). A rotating arm (1222) is rotatably connected to the fixed frame (1221), and a detection shaft (1223) is rotatably connected to the rotating arm (1222). A detection wheel (1224) and an encoder (1225) are respectively connected to both ends of the detection shaft (1223).

9. The air shaft welding equipment according to claim 4, characterized in that: An auxiliary structure (61) is also connected to the slider (1325) of the output structure (132), including a positioning seat (611) slidably connected to the side of the connecting frame (1323) near the base (1). The positioning seat (611) is connected to the slider (1325) through the positioning transmission frame (612). A connecting box (613) is fixedly connected to the side of the positioning seat (611) away from the positioning transmission frame (612). A fixed cylinder (614) is inserted into the inner wall of the connecting box (613). A plurality of rotating holes (615) are opened on the inner wall of the fixed cylinder (614). A transmission shaft (616) is rotatably connected to the inner wall of the rotating hole (615). A drive arm (617) is connected to the drive shaft (616). A positioning wheel (618) is rotatably connected to the other end of the drive arm (617).

10. The air shaft welding equipment according to claim 9, characterized in that: A missing gear (619) is fixedly connected to the outer wall of the transmission shaft (616), and the drive arm (617) is fixedly connected to the smooth part of the missing gear (619). Several missing gears (619) are rotatably connected through an internal gear (6110). An external toothed part (6111) is fixedly connected to the outer wall of the internal gear (6110). A second toothed plate (6112) meshes on the external toothed part (6111). The second toothed plate (6112) is slidably connected to the inner wall of the connecting box (613). A fifth driving member (6113) is fixedly connected to one side of the second toothed plate (6112) to drive it to move.

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