A special-shaped pipe welding device and a welding method for a drying rack

Abstract

The present invention discloses a special-shaped pipe welding device and a welding method for a drying rack, which relates to the field of welding devices, including a welding table, a mechanical arm is arranged on the welding table, a welding machine is installed on the mechanical arm, a clamping module is arranged on the welding table, and the clamping module includes two clamping assemblies, and the two clamping assemblies each include a rotating plate, a plurality of clamping units, a driving unit and a moving unit; the plurality of clamping units are arranged in a circle on the rotating plate, and the rotating plate can rotate, and the clamping unit includes a clamping block, and the clamping block is arranged in a semicircle. The clamping grooves arranged on the clamping blocks in the plurality of clamping units are different, and different clamping units can be rotated to the position of the moving unit, so that the moving unit pushes the clamping block to clamp different special-shaped pipes, and the adaptability to clamping different special-shaped pipes is better, and there is no need to replace the corresponding clamping mold according to different special-shaped pipes, so the operation is simpler and the effect is higher.

Description

Technical Field

[0001] The invention relates to the field of welding devices, and in particular to a special-shaped pipe welding device and a welding method for a drying rack. Background Art

[0002] Welding equipment refers to the equipment required to realize the welding process, which includes welding machines, welding process equipment and welding auxiliary equipment. The main types of welding equipment are electric welders, flame welding equipment and other welding equipment, among which electric welders are the most important components, including arc welders, resistance welders and other special types of welders, such as electroslag welders, plasma arc welders, high-frequency welders, etc. Welding equipment is an indispensable part of modern manufacturing industry, and they play an important role in improving welding efficiency, ensuring welding quality and reducing labor intensity.

[0003] Chinese patent application CN104191059A discloses a special-shaped pipe welding device, including a workbench, a high-frequency induction heating unit, an image measurement unit, a mechanical positioning clamping unit, an exhaust fan and a control box installed behind the mechanical positioning clamping unit. The mechanical positioning unit is arranged in the middle of the workbench table, and the PLC controller is installed in the control box. It is suitable for assembling small-sized special-shaped pipes by soft solder brazing method. The image measurement positioning is adopted to solve the problem that high assembly accuracy cannot be obtained under the condition of unsatisfactory positioning reference. At the same time, it can conveniently compensate for the errors caused by the welding heating process and the clamping force, improve the welding accuracy, and effectively avoid the collision and deformation of the thin wall of the parts during loading and unloading;

[0004] Chinese patent application CN114055040A discloses a special-shaped steel pipe welding device, including two docking workbenches and a transfer welding mechanism, the two docking workbenches are respectively arranged on both sides of the transfer welding mechanism, the upper surface of the docking workbench is slidably connected with a clamp, the upper surface of the docking workbench is fixedly connected with an electric push rod, the movable end of the electric push rod pushes the clamp to slide left and right, the transfer welding mechanism includes a base, the upper surface of the base is rotatably connected with a rotating mounting ring, a servo motor for driving the rotating mounting ring is arranged inside the base, a welding gun is installed in the rotating mounting ring, the docking part of the workpiece is located at the center of the rotating mounting ring, the welding gun rotates with the rotating mounting ring, and the workpiece is circumferentially rotated for welding, so as to ensure the continuity of welding and improve the welding quality. This method solves the problem that the special-shaped steel pipe has a long total length or a bending section and is not suitable for self-rotation welding, and the clamping position of the workpiece does not need to be changed during the welding process, which is conducive to the fixation of the workpiece.

[0005] The above patents and prior art also have the following defects:

[0006] When the existing welding device is used to weld special-shaped pipes, the current clamping assembly cannot match the surface of the special-shaped pipe, and the clamping effect on the special-shaped pipe is poor, which causes the special-shaped pipe to shake and shift easily during the welding process, resulting in poor welding effect. Some special-shaped pipes are clamped by clamping blocks that match the surface shape of the special-shaped pipe, but when welding special-shaped pipes of different shapes, the corresponding clamping blocks need to be replaced. Replacing the clamping blocks is more troublesome, resulting in reduced efficiency.

[0007] Specifically in the welding of the drying rack, the special-shaped tubes composed of special-shaped tubes of different shapes cannot be clamped and fixed. The position of the special-shaped tubes during welding causes the size of the drying rack to be wrong, which affects the welding quality of the drying rack. It is troublesome to use clamps of different shapes to clamp the special-shaped tubes, resulting in low welding efficiency of the drying rack.

[0008] Therefore, the present application provides a special-shaped pipe welding device and a welding method for a drying rack to meet the needs. Summary of the invention

[0009] The purpose of the present application is to provide a special-shaped tube welding device, in which the clamping blocks in the multiple clamping units are arranged with different clamping grooves, and different clamping units can be rotated to the position of the moving unit, so that the moving unit pushes the clamping block to clamp different special-shaped tubes. The device has better adaptability to the clamping of different special-shaped tubes, and does not need to replace the corresponding clamping mold according to different special-shaped tubes. The operation is simpler and the effect is higher.

[0010] To achieve the above-mentioned purpose, the present application provides the following technical solutions: a special-shaped pipe welding device, comprising a welding table, a mechanical arm is arranged on the welding table, a welding machine is installed on the mechanical arm, a clamping module is arranged on the welding table, the clamping module comprises two clamping assemblies, and the two clamping assemblies each comprise a rotating plate, a plurality of clamping units, a driving unit and a moving unit;

[0011] A plurality of the clamping units are arranged on the rotating plate in a circumferential manner, the rotating plate can rotate, the clamping units include clamping blocks, the clamping blocks are arranged in a semicircle, a special-shaped groove is provided on the clamping block, and the cross-sections of the special-shaped grooves provided on the plurality of the clamping blocks are different, the moving unit can push the corresponding clamping unit to move, so that the clamping blocks in the corresponding two clamping units abut against each other, and when the clamping blocks in the corresponding two clamping units abut against each other, the driving unit can drive the corresponding two clamping blocks to rotate;

[0012] The clamping unit further comprises a limiting member, which can limit the clamping block. When the two corresponding clamping blocks abut against each other, the limiting member can release the limiting of the clamping block, so that the clamping block can rotate.

[0013] Preferably, the clamping unit includes a clamping shell, a rotating semicircular ring and a rotating seat, the rotating seat is fixedly mounted in the clamping shell, the rotating semicircular ring is fixedly mounted on the clamping block, the rotating semicircular ring is slidingly fitted in the rotating seat, the limiting member includes a release block, a reset spring, a release rack, a release gear, a movable screw barrel, a movable screw, a limiting semicircular ring and a limiting block, the limiting semicircular ring is fixedly mounted on the clamping block, the release block is fixedly mounted on the reset spring, the release rack is fixedly mounted on the release block, the limiting block is fixedly mounted on the movable screw, the movable screw barrel is threadedly connected to the movable screw, the release gear is fixedly sleeved on the movable screw barrel, and the release rack is meshed with the release gear.

[0014] Preferably, the clamping unit also includes a driving half-gear ring, a driving gear, a driving belt member, a connecting shaft and a meshing gear, the driving half-gear ring is fixedly mounted on the clamping block, the driving half-gear ring is fixedly mounted on the clamping block, the driving gear is rotatably connected in the clamping shell and meshes with the driving half-gear ring, the connecting shaft is fixedly mounted on the driving gear, the connecting shaft is rotatably connected to the clamping shell and passes through the clamping shell, the driving belt member and the meshing gear are both located outside the clamping shell, the driving belt member includes a driving pulley, a driven pulley and a driving belt, the meshing gear is rotatably connected to the clamping shell, the driving pulley is fixedly mounted on the connecting shaft, the driven pulley is fixedly mounted on the meshing gear, and the driving belt is connected to the driving pulley and the driven pulley.

[0015] Preferably, the driving unit includes a driving motor and a connecting gear, the connecting gear is fixedly mounted on the output end of the driving motor, a moving plate is fixedly mounted on the clamping shell, and the moving unit includes a pushing cylinder and a pushing plate, the pushing plate is fixedly mounted on the output end of the pushing cylinder.

[0016] Preferably, the limiting member also includes a fixed block and a connecting rod, the fixed block is fixedly mounted on the clamping shell, the connecting rod is fixedly mounted on the release block, the connecting rod passes through the fixed block and slidably cooperates with the fixed block, and the reset spring is fixedly mounted on the fixed block and sleeved on the connecting rod.

[0017] Preferably, the limiting member also includes two support blocks, a support plate, a support rod and a limiting rod, the two support blocks are fixedly mounted on the clamping shell, the support rod is fixedly mounted on the two support blocks, the support plate is fixedly mounted on the limiting block, one side of the support plate is abutted against the inner wall of the clamping shell, the support rod passes through the support plate and slides with the support plate, the limiting rod is fixedly mounted on the release block, the limiting rod passes through the fixed block and slides with the fixed block, and the movable screw is rotatably connected to the support plate.

[0018] Preferably, the clamping module also includes a fixed shell, the two clamping units are both arranged in the fixed shell, a stabilizing plate is fixedly mounted on the pushing cylinder, the stabilizing plate is fixedly mounted on the inner wall of the fixed shell, and the driving motor is fixedly mounted on the fixed shell.

[0019] Preferably, a rotating shaft is fixedly mounted on the rotating plate, a rotating motor is fixedly mounted on the fixed shell, and an output end of the rotating motor is fixedly mounted on the rotating shaft.

[0020] Preferably, the rotating plate is provided with a receiving groove corresponding to the position of the clamping unit, and the clamping unit includes a stabilizing rod, a guide rod and a reset spring, the stabilizing rod and the guide rod are both fixedly mounted on the clamping shell, a stabilizing groove is provided at the bottom of the receiving groove corresponding to the stabilizing rod, the stabilizing rod is slidably fitted in the stabilizing groove, a guide groove is provided at the bottom of the receiving groove corresponding to the position of the guide rod, the guide rod is slidably fitted in the guide groove, one end of the reset spring is fixedly mounted in the guide groove, and the other end of the reset spring is fixedly mounted on the clamping shell.

[0021] Preferably, the bottom of the fixed shell is fixedly mounted with a mounting plate, and the mounting plate is fixedly mounted on the welding table by bolts.

[0022] A drying rack welding method uses the above-mentioned special-shaped pipe welding device.

[0023] In summary, the technical effects and advantages of the present invention are as follows:

[0024] 1. In the present invention, the clamping unit is pushed to move by the moving unit, so that the clamping blocks in the two clamping units clamp the special-shaped tube. Because the clamping grooves provided in the clamping units match the special-shaped tubes, the clamping effect of the special-shaped tubes is better, so that the special-shaped tubes are more stable and not easy to shake during the welding process, and the welding quality is guaranteed. At the same time, the driving unit can drive the clamping block to rotate, and the clamping block drives the special-shaped tube to rotate, and the position of the special-shaped tube is adjusted, so that the special-shaped tube has no dead angle during welding. After the front welding of the special-shaped tube is completed, the position of the special-shaped tube can be adjusted more conveniently, so that the back of the special-shaped tube can be welded, and there is no need to re-clamp the special-shaped tube, thereby improving the welding efficiency. At the same time, a plurality of clamping units are arranged in the clamping assembly, and the clamping blocks in the plurality of clamping units are arranged with different clamping grooves, so that different clamping units can be rotated to the position of the moving unit, so that the moving unit pushes the clamping block to clamp different special-shaped tubes, and the adaptability to the clamping of different special-shaped tubes is better, and there is no need to replace the corresponding clamping mold according to different special-shaped tubes, so the operation is simpler and the effect is higher.

[0025] 2. In the present invention, when the clamping unit is not located at the moving unit position, the two limit blocks are located at the ends of the limit semicircular ring, and the limit semicircular ring and the clamping block are limited so that the clamping block cannot rotate, thereby preventing the clamping block from rotating out of the clamping unit and ensuring the stability of the clamping block;

[0026] 3. The welding method for the drying rack can quickly switch the corresponding clamping mold according to the shape and size of the special-shaped tube when welding the special-shaped tube into the drying rack. The special-shaped tube is clamped by using the clamping mold matching the special-shaped tube. The special-shaped tube is more stable during welding and not easy to be misplaced. The size of the welded drying rack is more accurate. At the same time, special-shaped tubes of different shapes can be fixed. The scope of use is wider, different drying racks can be welded, the clamping mold is switched more quickly, and the efficiency of welding the drying rack is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0028] Figure 1 It is a structural schematic diagram of the welding table, the mechanical arm, the welding machine, the clamping assembly and the fixed housing in the present invention;

[0029] Figure 2 It is a structural schematic diagram of the welding table, the fixed housing, the clamping assembly and the rotating motor in the present invention;

[0030] Figure 3 It is a structural schematic diagram of the welding station in the present invention;

[0031] Figure 4 For the present invention Figure 3 A magnified view of part A;

[0032] Figure 5 It is a schematic diagram of the structure of the rotating plate, the moving unit and the driving unit in the present invention;

[0033] Figure 6 It is a schematic diagram of the structure of the clamping unit, the rotating plate and the rotating motor in the present invention;

[0034] Figure 7 For the present invention Figure 6 A magnified view of part B;

[0035] Figure 8 It is a schematic diagram of the structure of the clamping unit and the rotating plate in the present invention;

[0036] Fig. 9 For the present invention Figure 8 Enlarged view of part C;

[0037] Fig.10 It is a schematic diagram of the structure of the clamping block and the clamping shell in the present invention;

[0038] Fig.11 For the present invention Fig.10 A magnified view of part D in the middle;

[0039] Fig.12 It is a structural schematic diagram of the welding table, mechanical arm, welding machine and fixed shell in the present invention.

[0040] In the figure: 1, welding table; 2, mechanical arm; 3, welding machine; 4, clamping assembly; 41, rotating plate; 42, fixed housing; 5, clamping unit; 50, limiter; 501, release block; 502, return spring; 503, release rack; 504, release gear; 505, moving screw barrel; 506, moving screw; 507, limit semicircular ring; 508, limit block; 509, fixed block; 510, connecting rod; 511, support plate; 5 12. Support rod; 513. Limit rod; 51. Clamping block; 52. Reset spring; 53. Clamping shell; 54. Rotating semicircular ring; 55. Rotating seat; 56. Driving half gear ring; 57. Driving gear; 58. Driving belt; 59. Meshing gear; 6. Driving unit; 61. Driving motor; 62. Connecting gear; 7. Moving unit; 71. Pushing cylinder; 72. Pushing plate; 8. Moving plate; 9. Rotating motor; 10. Mounting plate. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] Example: Reference Figure 1-Figure 12 The illustrated special-shaped pipe welding device comprises a welding platform 1, a mechanical arm 2 is arranged on the welding platform 1, a welding machine 3 is installed on the mechanical arm 2, a clamping module is arranged on the welding platform 1, the clamping module comprises two clamping assemblies 4, and the two clamping assemblies 4 each comprise a rotating plate 41, a plurality of clamping units 5, a driving unit 6 and a moving unit 7;

[0043] A plurality of clamping units 5 are arranged in a circle on a rotating plate 41, and the rotating plate 41 can rotate. The clamping units 5 include clamping blocks 51, and the clamping blocks 51 are arranged in a semicircle. A special-shaped groove is provided on the clamping blocks 51, and the cross-sections of the special-shaped grooves provided on the plurality of clamping blocks 51 are different. The moving unit 7 can push the corresponding clamping unit 5 to move, so that the clamping blocks 51 in the corresponding two clamping units 5 abut against each other. When the clamping blocks 51 in the corresponding two clamping units 5 abut against each other, the driving unit 6 can drive the corresponding two clamping blocks 51 to rotate;

[0044] The clamping unit 5 further includes a limiting member 50 , which can limit the clamping block 51 . When two corresponding clamping blocks 51 abut against each other, the limiting member 50 can release the limiting of the clamping block 51 , so that the clamping block 51 can rotate.

[0045] The special-shaped tube is placed between the two clamping assemblies 4, and the moving unit 7 pushes the two relative moving units 7 to move, and the two clamping blocks 51 move to clamp the special-shaped tube. After the special-shaped tube is clamped, the driving unit 6 drives the clamping block 51 to rotate, and the clamping block 51 drives the special-shaped tube to rotate, and the position of the special-shaped tube is adjusted. The two clamping modules clamp the two special-shaped tubes, and the two special-shaped tubes are against each other. The robot arm 2 drives the welding machine 3 to weld the two special-shaped tubes. When the special-shaped tubes to be clamped are different, the rotating plate 41 is operated to rotate, and the rotating plate 41 drives the clamping unit 5 to rotate. Because the clamping grooves on the clamping blocks 51 on each clamping unit 5 are different, when the appropriate clamping unit 5 rotates to the position of the moving unit 7, the rotating plate 41 stops rotating, and the moving unit 7 pushes the corresponding clamping unit 5 to move, so that the two clamping blocks 51 clamp the special-shaped tube.

[0046] The moving unit 7 pushes the clamping unit 5 to move, so that the clamping blocks 51 in the two clamping units 5 clamp the special-shaped tube. Because the clamping grooves in the clamping units 5 match the special-shaped tube, the clamping effect of the special-shaped tube is better, making the special-shaped tube more stable and not easy to shake during the welding process, thereby ensuring the welding quality. At the same time, the driving unit 6 can drive the clamping block 51 to rotate, and the clamping block 51 drives the special-shaped tube to rotate, and adjust the position of the special-shaped tube, so that the special-shaped tube has no dead angle during welding, and can more conveniently adjust the special-shaped tube after the front welding is completed. The position of the special-shaped tube can be adjusted so that the reverse side of the special-shaped tube can be welded without re-clamping the special-shaped tube, thereby improving the welding efficiency. At the same time, a plurality of clamping units 5 are arranged in the clamping assembly 4. The clamping blocks 51 in the plurality of clamping units 5 are arranged in different clamping grooves. Different clamping units 5 can be rotated to the position of the moving unit 7, so that the mobile unit 7 pushes the clamping block 51 to clamp different special-shaped tubes. The adaptability to clamping different special-shaped tubes is better, and there is no need to replace the corresponding clamping mold according to different special-shaped tubes. The operation is simpler and the effect is higher.

[0047] Further, refer to Figure 1-Figure 12 The clamping unit 5 includes a clamping shell 53, a rotating semicircular ring 54 and a rotating seat 55. The rotating seat 55 is fixedly installed in the clamping shell 53. The rotating semicircular ring 54 is fixedly installed on the clamping block 51. The rotating semicircular ring 54 is slidably fitted in the rotating seat 55. The limiting member 50 includes a release block 501, a reset spring 502, a release rack 503, a release gear 504, a moving screw barrel 505, a moving screw 506, a limiting semicircular ring 507 and a limiting block 508. The limiting semicircular ring 507 is fixedly installed on the clamping block 51. The release block 501 is fixedly installed on the reset spring 502. The release rack 503 is fixedly installed on the release block 501. The limiting block 508 is fixedly installed on the moving screw 506. The moving screw barrel 505 is threadedly connected to the moving screw 506. The release gear 504 is fixedly sleeved on the moving screw barrel 505. The release rack 503 is meshed with the release gear 504.

[0048] The limiting members 50 have two. When the clamping unit 5 is not located at the position of the moving unit 7, the two limiting blocks 508 are located at the ends of the limiting semicircular ring 507, limiting the limiting semicircular ring 507 so that the clamping block 51 cannot rotate. When the moving unit 7 pushes the two clamping blocks 51 to abut against each other, the two releasing blocks 501 abut against each other and move. The two releasing blocks 501 drive the releasing rack 503 to move and compress the reset spring 502. The releasing rack 503 drives the releasing gear 504 to rotate. The releasing gear 504 drives the moving screw 505 to rotate. The moving screw 506 drives the limiting block 508 to move, so that the limiting block 508 is separated from the limiting semicircular ring 507, so that the driving unit 6 can drive the clamping block 51 to rotate. When the clamping is completed and the corresponding clamping assembly 4 needs to be replaced, the driving unit 6 drives the clamping block 51 to move to the initial position, the two limit members 50 are reset, the two release blocks 501 are disengaged, the reset spring 502 drives the release block 501 to reset, the release block 501 drives the release rack 503 to move, the release rack 503 drives the release gear 504 to rotate, the release gear 504 drives the moving screw barrel 505 to rotate, the moving screw 506 moves and drives the limit block 508 to move, so that the limit block 508 is re-located at the end of the limit semicircular ring 507, and the limit semicircular ring 507 and the clamping block 51 are limited, which can prevent the clamping block 51 from rotating out of the clamping unit 5, thereby ensuring the stability of the clamping block 51.

[0049] The cross section of the rotating semicircular ring 54 is T-shaped, and a T-shaped slot is provided on the rotating seat 55. The rotating semicircular ring 54 slides in the T-shaped slot to limit the rotating semicircular ring 54, so that the rotating semicircular ring 54 and the clamping block 51 are more stable.

[0050] Further, refer to Figure 1-Figure 12 The clamping unit 5 also includes a driving half-gear ring 56, a driving gear 57, a driving belt member 58, a connecting shaft and a meshing gear 59. The driving half-gear ring 56 is fixedly mounted on the clamping block 51. The driving half-gear ring 56 is fixedly mounted on the clamping block 51. The driving gear 57 is rotatably connected in the clamping shell 53 and meshes with the driving half-gear ring 56. The connecting shaft is fixedly mounted on the driving gear 57. The connecting shaft is rotatably connected to the clamping shell 53 and penetrates the clamping shell 53. The driving belt member 58 and the meshing gear 59 are both located outside the clamping shell 53. The driving belt member 58 includes a driving pulley, a driven pulley and a driving belt. The meshing gear 59 is rotatably connected to the clamping shell 53. The driving pulley is fixedly mounted on the connecting shaft, the driven pulley is fixedly mounted on the meshing gear 59, and the driving belt is connected to the driving pulley and the driven pulley.

[0051] When the two clamping blocks 51 abut against each other, the two driving half-gear rings 56 abut against each other to form a circular structure, the driving unit 6 drives the meshing gear 59 to rotate, the meshing gear 59 drives the passive pulley to rotate, the passive pulley drives the driving belt to rotate, the driving belt causes the driving pulley to rotate, the driving pulley drives the connecting shaft to rotate, the driving pulley drives the connecting shaft to rotate, the connecting shaft drives the driving gear 57 to rotate, the driving gear 57 drives the driving half-gear ring 56 to rotate, and the driving half-gear ring 56 drives the clamping block 51 to rotate.

[0052] Further, refer to Figure 1-Figure 12 The driving unit 6 includes a driving motor 61 and a connecting gear 62, and the connecting gear 62 is fixedly installed at the output end of the driving motor 61. A moving plate 8 is fixedly installed on the clamping shell 53. The moving unit 7 includes a pushing cylinder 71 and a pushing plate 72, and the pushing plate 72 is fixedly installed at the output end of the pushing cylinder 71.

[0053] The pushing cylinder 71 drives the pushing plate 72 to move, and the pushing plate 72 abuts against the corresponding moving plate 8. The moving plate 8 drives the clamping shell 53 to move, thereby moving the clamping unit 5. The clamping shell 53 drives the meshing gear 59 to move to mesh with the connecting gear 62. The driving motor 61 drives the connecting gear 62 to rotate, and the connecting gear 62 drives the meshing gear 59 to rotate. The meshing gear 59 drives the clamping block 51 to rotate, and the clamping block 51 drives the special-shaped tube to rotate, thereby adjusting the position of the special-shaped tube.

[0054] Further, refer to Figure 1-Figure 12 The limiting member 50 also includes a fixed block 509 and a connecting rod 510. The fixed block 509 is fixedly mounted on the clamping shell 53, and the connecting rod 510 is fixedly mounted on the release block 501. The connecting rod 510 passes through the fixed block 509 and slides with the fixed block 509. The reset spring 502 is fixedly mounted on the fixed block 509 and sleeved on the connecting rod 510.

[0055] When the release block 501 moves, the connecting rod 510 is driven to move, and the connecting rod 510 slides in the fixing block 509, so that the release block 501 moves more stably and is not easy to shake.

[0056] Further, refer to Figure 1-Figure 12 The limiting member 50 also includes two support blocks, a support plate 511, a support rod 512 and a limiting rod 513. The two support blocks are fixedly mounted on the clamping shell 53. The support rod 512 is fixedly mounted on the two support blocks. The support plate 511 is fixedly mounted on the limiting block 508. One side of the support plate 511 is against the inner wall of the clamping shell 53. The support rod 512 penetrates the support plate 511 and slides with the support plate 511. The limiting rod 513 is fixedly mounted on the release block 501. The limiting rod 513 penetrates the fixed block 509 and slides with the fixed block 509. The movable screw barrel 505 is rotatably connected to the support plate 511.

[0057] When the limit block 508 moves, the limit block 508 drives the support plate 511 to move, and the support plate 511 moves on the support rod 512, so that the limit block 508 is more stable, and the limit block 508 has a better limiting effect on the limiting semicircular ring 507.

[0058] Further, refer to Figure 1-Figure 12 The clamping module also includes a fixed shell 42, and the two clamping units 5 are both arranged in the fixed shell 42. A stabilizing plate is fixedly installed on the pushing cylinder 71, and the stabilizing plate is fixedly installed on the inner wall of the fixed shell 42. The driving motor 61 is fixedly installed on the fixed shell 42.

[0059] The fixed housing 42 provides support for the pushing cylinder 71 and the driving motor 61 .

[0060] Further, refer to Figure 1-Figure 12 A rotating shaft is fixedly mounted on the rotating plate 41 , a rotating motor 9 is fixedly mounted on the fixed housing 42 , and an output end of the rotating motor 9 is fixedly mounted on the rotating shaft.

[0061] The rotating motor 9 drives the rotating shaft to rotate, and the rotating shaft drives the rotating plate 41 to rotate, so that different clamping units 5 move to the positions of the moving unit 7 and the driving unit 6, so that different clamping units 5 are switched to clamp the special-shaped pipe.

[0062] Further, refer to Figure 1-Figure 12 A receiving groove is provided on the rotating plate 41 at a position corresponding to the clamping unit 5. The clamping unit 5 includes a stabilizing rod, a guide rod and a reset spring 52. The stabilizing rod and the guide rod are both fixedly mounted on the clamping shell 53. A stabilizing groove is provided at the bottom of the receiving groove corresponding to the stabilizing rod. The stabilizing rod is slidably fitted in the stabilizing groove. A guide groove is provided at the bottom of the receiving groove corresponding to the position of the guide rod. The guide rod is slidably fitted in the guide groove. One end of the reset spring 52 is fixedly mounted in the guide groove, and the other end of the reset spring 52 is fixedly mounted on the clamping shell 53.

[0063] When the moving unit 7 pushes the clamping shell 53 to move, the clamping shell 53 drives the stabilizing rod and the guide rod to move, and the reset spring 52 accumulates force. When the moving unit 7 is reset, the reset spring 52 drives the clamping shell 53 to reset, so that the clamping shell 53 is reset to the storage groove, and the reset spring 52 moves to the guide groove.

[0064] Further, refer to Figure 1-Figure 12 The bottom of the fixed shell 42 is fixedly mounted on a mounting plate 10, and the mounting plate 10 is fixedly mounted on the welding table 1 by bolts.

[0065] The mounting plate 10 is fixedly mounted on the welding table 1 by bolts, and the clamping module is fixed on the welding table 1. A plurality of mounting holes are also provided on the welding table 1 according to the requirements of the clamping position. The clamping module is installed in the mounting holes by bolts, thereby changing the clamping position of the two special-shaped tubes so that the special-shaped tubes can be offset at an angle to meet different welding requirements for the special-shaped tubes.

[0066] A drying rack welding method uses the above-mentioned special-shaped pipe welding device.

[0067] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A special-shaped pipe welding device, comprising a welding table, a mechanical arm is arranged on the welding table, and a welding machine is installed on the mechanical arm, characterized in that: The welding table is provided with a clamping module, the clamping module includes two clamping assemblies, and the two clamping assemblies each include a rotating plate, a plurality of clamping units, a driving unit and a moving unit; A plurality of the clamping units are arranged on the rotating plate in a circumferential manner, the rotating plate can rotate, the clamping units include clamping blocks, the clamping blocks are arranged in a semicircle, a special-shaped groove is provided on the clamping block, and the cross-sections of the special-shaped grooves provided on the plurality of the clamping blocks are different, the moving unit can push the corresponding clamping unit to move, so that the clamping blocks in the corresponding two clamping units abut against each other, and when the clamping blocks in the corresponding two clamping units abut against each other, the driving unit can drive the corresponding two clamping blocks to rotate; The clamping unit further includes a limiting member, which can limit the clamping block. When the two corresponding clamping blocks abut against each other, the limiting member can release the limiting of the clamping block, so that the clamping block can rotate; The clamping unit comprises a clamping shell, a rotating semicircular ring and a rotating seat, wherein the rotating seat is fixedly installed in the clamping shell, the rotating semicircular ring is fixedly installed on the clamping block, and the rotating semicircular ring is slidably fitted in the rotating seat; The clamping unit also includes a driving half-gear ring, a driving gear, a driving belt member, a connecting shaft and a meshing gear, wherein the driving half-gear ring is fixedly mounted on the clamping block, the driving gear is rotatably connected in the clamping shell and meshes with the driving half-gear ring, the connecting shaft is fixedly mounted on the driving gear, the connecting shaft is rotatably connected to the clamping shell and passes through the clamping shell, the driving belt member and the meshing gear are both located outside the clamping shell, the driving belt member includes a driving pulley, a driven pulley and a driving belt, the meshing gear is rotatably connected to the clamping shell, the driving pulley is fixedly mounted on the connecting shaft, the driven pulley is fixedly mounted on the meshing gear, and the driving belt is connected to the driving pulley and the driven pulley.

2. The special-shaped pipe welding device according to claim 1, characterized in that: The limiting member includes a release block, a reset spring, a release rack, a release gear, a movable screw barrel, a movable screw, a limiting semicircular ring and a limit block, the limiting semicircular ring is fixedly mounted on the clamping block, the release block is fixedly mounted on the reset spring, the release rack is fixedly mounted on the release block, the limiting block is fixedly mounted on the movable screw, the movable screw barrel is threadedly connected to the movable screw, the release gear is fixedly sleeved on the movable screw barrel, and the release rack is meshed with the release gear.

3. The special-shaped pipe welding device according to claim 2, characterized in that: The driving unit includes a driving motor and a connecting gear, the connecting gear is fixedly mounted on the output end of the driving motor, a moving plate is fixedly mounted on the clamping shell, and the moving unit includes a pushing cylinder and a pushing plate, the pushing plate is fixedly mounted on the output end of the pushing cylinder.

4. The special-shaped pipe welding device according to claim 2, characterized in that: The limiting member also includes a fixed block and a connecting rod, wherein the fixed block is fixedly mounted on the clamping shell, the connecting rod is fixedly mounted on the releasing block, the connecting rod passes through the fixed block and slidably cooperates with the fixed block, and the reset spring is fixedly mounted on the fixed block and sleeved on the connecting rod.

5. The special-shaped pipe welding device according to claim 4, characterized in that: The limiting member also includes two support blocks, a support plate, a support rod and a limiting rod. The two support blocks are fixedly mounted on the clamping shell, the support rod is fixedly mounted on the two support blocks, the support plate is fixedly mounted on the limiting block, one side of the support plate is abutted against the inner wall of the clamping shell, the support rod passes through the support plate and slides with the support plate, the limiting rod is fixedly mounted on the release block, the limiting rod passes through the fixed block and slides with the fixed block, and the movable screw is rotatably connected to the support plate.

6. The special-shaped pipe welding device according to claim 3, characterized in that: The clamping module also includes a fixed shell, the two clamping units are both arranged in the fixed shell, a stabilizing plate is fixedly installed on the pushing cylinder, the stabilizing plate is fixedly installed on the inner wall of the fixed shell, and the driving motor is fixedly installed on the fixed shell.

7. The special-shaped pipe welding device according to claim 6, characterized in that: A rotating shaft is fixedly mounted on the rotating plate, a rotating motor is fixedly mounted on the fixed housing, and an output end of the rotating motor is fixedly mounted on the rotating shaft.

8. The special-shaped pipe welding device according to claim 6, characterized in that: The rotating plate is provided with a receiving groove corresponding to the position of the clamping unit, and the clamping unit includes a stabilizing rod, a guide rod and a reset spring. The stabilizing rod and the guide rod are both fixedly mounted on the clamping shell, and a stabilizing groove is provided at the bottom of the receiving groove corresponding to the stabilizing rod. The stabilizing rod is slidably fitted in the stabilizing groove, and a guide groove is provided at the bottom of the receiving groove corresponding to the position of the guide rod. The guide rod is slidably fitted in the guide groove, one end of the reset spring is fixedly mounted in the guide groove, and the other end of the reset spring is fixedly mounted on the clamping shell, and the bottom of the fixed shell is fixedly mounted on a mounting plate, and the mounting plate is fixedly mounted on the welding table by bolts.

9. A method for welding a drying rack, characterized in that: The special-shaped pipe welding device as described in any one of claims 1 to 8 is used.

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