Automatic truck pipeline welding device

Abstract

The invention relates to the technical field of pipeline welding, in particular to an automatic truck pipeline welding device which comprises two sets of pipe end clamping assemblies and a pipe end connecting assembly, each set of pipe end clamping assembly comprises a first translation seat and a three-jaw chuck, and the pipe end connecting assembly comprises a positioning table, a double-shaft translation mechanism and two combined clamping mechanisms. The double-shaft translation mechanism comprises a second translation seat and two groups of sliding seats, each group of parallel clamping mechanism comprises a semicircular connecting plate and two groups of semicircular shells, a semicircular bearing is arranged in each group of semicircular shells, an arc-shaped groove is formed in the top of each semicircular connecting plate, a grinding mechanism is arranged at the bottom of one semicircular connecting plate, and a grinding mechanism is arranged at the bottom of the other semicircular connecting plate. A laser sensor is arranged on the outer wall of the other semicircular connecting plate, a positioning mechanism is arranged on the double-shaft translation mechanism, the pipe end connection assembly is used for connecting the abutting outer ends of the two pipelines, and the two combining and clamping mechanisms clamp the two pipelines during connection, so that it is guaranteed that the two pipelines can be in the coaxial state all the time.

Description

Technical Field

[0001] The invention relates to the technical field of pipeline welding, and in particular to an automatic truck pipeline welding device. Background Art

[0002] Automobile pipeline welding is a key manufacturing process, which involves the connection of various pipelines inside the car, including fuel pipes, brake pipes, cooling water pipes, air conditioning pipes, etc. Automobile pipeline welding can be done by a variety of methods, including high-frequency welding, argon arc welding, trace alloy welding, etc.

[0003] The existing Chinese patent with publication number CN114769866B discloses a laser welding device for heating pipeline of vehicle liquid level sensor, but the above patent and the prior art also have the following defects:

[0004] First, when welding automobile pipelines, it is usually necessary to weld two pipes end to end and finally merge them into a long pipe. Before welding, the welding gun needs to be positioned to ensure that the output end of the welding gun can be aligned with the joint between the two pipes. When positioning the welding gun, it is difficult to accurately locate the point, so it usually takes a long time to determine the final landing point of the welding gun. In addition, the length of the pipe welded each time is different. After welding, the position of the welding gun may need to be readjusted, which wastes a lot of time.

[0005] Secondly, after the pipeline is welded, welding slag will be generated between the two pipelines. After that, the finished pipeline needs to be transported to the slag grinding process for slag grinding. The pipeline will waste a certain amount of time during transportation, which will reduce production efficiency.

[0006] Third, when two pipes are butt-jointed, it is necessary to ensure that the two pipes always remain coaxial. In the traditional welding process, since it is impossible to ensure that the two pipes remain coaxial, the two pipes will eventually be misaligned, resulting in the failure of the end-to-end welding.

[0007] Therefore, it is necessary to provide an automated truck pipeline welding device to solve the above problems. Summary of the invention

[0008] Based on this, it is necessary to provide an automated truck pipeline welding device to address the existing technical problems.

[0009] In order to solve the problems of the prior art, the technical solution adopted by the present invention is: an automated truck pipeline welding device, comprising two groups of symmetrically arranged pipe end clamping assemblies and a pipe end connection assembly arranged between the two groups of pipe end clamping assemblies, each group of pipe end clamping assemblies comprises a No. 1 translation seat and a three-jaw chuck arranged on the No. 1 translation seat, the pipe end connection assembly comprises a positioning table, a biaxial translation mechanism and two groups of symmetrically arranged combined clamping mechanisms, the positioning table is fixedly arranged, the biaxial translation mechanism is arranged on the positioning table, the biaxial translation mechanism comprises a No. 2 translation seat and two groups of slides symmetrically arranged on the No. 2 translation seat, and each group of combined clamping mechanisms is arranged on the corresponding slide On, each group of combined clamping mechanisms includes a semicircular connecting plate and two groups of symmetrically arranged semicircular outer shells, the semicircular outer shells are connected to the sliding seat, the semicircular connecting plate is arranged between the two groups of semicircular outer shells, and the semicircular connecting plate connects the two groups of semicircular outer shells, each group of semicircular outer shells is provided with a semicircular bearing, the top of each semicircular connecting plate is provided with an arc groove, the bottom of one of the semicircular connecting plates is provided with a grinding mechanism, the outer wall of the other semicircular connecting plate is provided with a laser sensor, and the No. 2 translation seat is provided with a positioning mechanism, the positioning mechanism includes a ring and a rotating rod, the ring is connected to the No. 2 translation seat, one end of the rotating rod is hinged to the ring, and the other end of the rotating rod is provided with a stopper.

[0010] Furthermore, a No. 1 translation drive mechanism is provided on both sides of the positioning platform, and each No. 1 translation drive mechanism includes a fixed base plate, a plurality of No. 1 slide rails and a plurality of No. 1 sliders. The fixed base plate is horizontally arranged, and the plurality of No. 1 slide rails are equidistantly distributed on the fixed base plate in the horizontal direction. Each No. 1 slide rail is horizontal, and each No. 1 slider slides on the No. 1 slide rail. The No. 1 translation seat is fixedly connected to the plurality of No. 1 sliders.

[0011] Furthermore, a No. 2 translation drive mechanism is provided on the top of the positioning platform, and the No. 2 translation drive mechanism includes a number of No. 2 slide rails and a number of No. 2 sliders. The number of No. 2 slide rails are evenly distributed on the top of the positioning platform along the horizontal direction. Each No. 2 slider slides on the corresponding No. 2 slide rail, and the No. 2 translation seat is fixedly connected to the number of No. 2 sliders.

[0012] Furthermore, a screw drive mechanism is provided on the top of the No. 2 translation seat, and the screw drive mechanism includes a threaded rod and two guide sliding rods. The threaded rod is horizontally connected to the No. 2 translation seat for rotation, and the two guide sliding rods are symmetrically arranged on both sides of the threaded rod, each guide sliding rod is parallel to the threaded rod, and each guide sliding rod is fixedly connected to the No. 2 translation seat, and a threaded sleeve and two guide sliding sleeves are fixedly provided at the bottom of each sliding seat, the threaded sleeve is threadedly matched with the threaded rod, and each guide sliding sleeve is sleeved on the corresponding guide sliding rod, and a motor connected to the threaded rod is fixedly provided on the No. 2 translation seat.

[0013] Furthermore, each semicircular bearing includes a semicircular outer plate, a semicircular lining plate and a plurality of needle rollers. The semicircular outer plate is arranged in the corresponding semicircular outer shell, and the semicircular outer plate is coaxial with the semicircular outer shell. The semicircular lining plate is fixed on the inner wall of the semicircular outer plate, and the semicircular lining plate is coaxial with the semicircular outer plate. The plurality of needle rollers are evenly distributed along the circumferential direction of the semicircular lining plate, and the axial direction of each needle roller is translated with the axial direction of the semicircular lining plate, and each needle roller is rotationally connected to the semicircular lining plate.

[0014] Furthermore, a plurality of No. 1 protrusions are formed on the outer wall of each semicircular outer plate, a limiting shaft is formed on each No. 1 protrusion, a plurality of No. 2 protrusions corresponding to the No. 1 protrusions are formed on the inner wall of each semicircular outer shell, and each limiting shaft passes through the corresponding No. 2 protrusions and the semicircular outer shell horizontally in sequence, and each limiting shaft is sleeved with a No. 1 spring, and the two ends of the No. 1 spring respectively conflict with the No. 1 protrusion and the No. 2 protrusion, and a plurality of grooves corresponding to the limiting shafts are opened inwardly on the outer wall of each semicircular outer shell, and a limiting nut is screwed on one end of each limiting shaft passing through the semicircular outer shell.

[0015] Furthermore, the grinding mechanism includes a grinding wheel, a transmission member and a small motor. A strip notch is provided at the bottom of each semicircular connecting plate. The grinding wheel rotates in one of the strip notches, and the axial direction of the grinding wheel is parallel to the axial direction of the semicircular connecting plate. The small motor is located beside the grinding wheel and is fixedly connected to the corresponding semicircular connecting plate. The transmission member connects the small motor to the grinding wheel.

[0016] Furthermore, elastic top seats are provided at both ends of the grinding wheel, and each elastic top seat includes a mounting seat, a guide block and a number of No. 2 springs. Two bosses are formed on the outer wall of each semicircular connecting plate, and a horizontal support plate is fixed on each boss. The mounting seat is fixed on the corresponding support plate. A vertical strip slide groove is opened in the mounting seat, and the guide block slides in the strip slide groove. Each No. 2 spring is vertically fixed in the strip slide groove. The two ends of each No. 2 spring respectively conflict with the guide block and the inner wall of the mounting seat. Two limit blocks are fixed on the top of the mounting seat, and the two ends of the grinding wheel are rotatably connected to the two guide blocks respectively.

[0017] Furthermore, the transmission member includes a splined short shaft, a No. 1 bevel gear group and a No. 2 bevel gear group. The splined short shaft is vertically connected to the outer wall of one of the semicircular shells for rotation. The No. 1 bevel gear group includes meshing No. 1 bevel gear and No. 2 bevel gear. The No. 1 bevel gear is coaxially fixed to one end of the grinding wheel. One of the guide blocks is fixedly connected with an internal gear sleeve sleeved on the splined short shaft. The No. 2 bevel gear is coaxially fixed to the internal gear sleeve, and the splined short shaft passes through the No. 2 bevel gear. The No. 2 bevel gear group includes meshing No. 3 bevel gear and No. 4 bevel gear. The No. 3 bevel gear is coaxially fixed to the lower end of the splined short shaft, and the No. 4 bevel gear is coaxially fixed to the output end of the small motor.

[0018] Furthermore, vertical brackets are provided on both sides of the positioning platform, and the two brackets correspond to the two three-jaw chucks respectively. Two symmetrical supporting wheels are rotatably provided on each bracket, and the axial direction of each supporting wheel is horizontal.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] Firstly, the pipe end connection assembly of the device is used to connect the outer ends of two pipes that conflict with each other. When connecting, the two combined clamping mechanisms will clamp the two pipes to ensure that the two pipes are always in a coaxial state;

[0021] Secondly, a grinding mechanism is provided on the semicircular connecting plate of the device. When two pipes are welded, the welding slag on the pipes will rotate downward to the grinding mechanism, so that the welding slag on the pipes can be ground off by the grinding mechanism. Finally, when the pipes are welded, the welding slag is also ground off, thereby eliminating the trouble of transporting the pipes to the grinding process in the future.

[0022] Thirdly, a positioning mechanism is provided on the dual-axis translation mechanism of the device, and the positioning mechanism is used to position the arc groove on the semicircular connecting plate to ensure that the arc groove corresponds to the joint seam between the two pipes. When the clamping mechanism is combined to clamp the pipe, the welding gun can be positioned by the laser sensor on the semicircular connecting plate, and finally the output end of the welding gun will correspond to the arc groove. In summary, the welding gun only needs to find the position of the laser sensor when positioning, and the positioning is simple and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0024] Figure 2 It is a three-dimensional structural schematic diagram of the pipe end clamping assembly;

[0025] Figure 3 It is a three-dimensional structural schematic diagram of the pipe end connection component;

[0026] Figure 4 It is a three-dimensional structural schematic diagram of a dual-axis translation mechanism;

[0027] Figure 5 It is a three-dimensional structural schematic diagram of the screw drive mechanism and the combined clamping mechanism;

[0028] Figure 6 It is a top view of the combined clamping mechanism and the biaxial translation mechanism;

[0029] Figure 7 yes Figure 6 A1 is a partial enlarged schematic diagram;

[0030] Figure 8It is a three-dimensional structural schematic diagram of the combined clamping mechanism;

[0031] Fig. 9 It is a three-dimensional structural diagram of the grinding mechanism;

[0032] Fig.10 yes Fig. 9 A2 is a partial enlarged schematic diagram;

[0033] Fig.11 It is a top view of the semicircular shell;

[0034] Fig.12 yes Fig.11 Section view along line AA;

[0035] Fig.13 is a schematic diagram of a three-dimensional structure after the combined clamping mechanism is combined;

[0036] Fig.14 It is a top view of the combined clamping mechanism.

[0037] The numbers in the figure are: 1. pipe end clamping assembly; 2. pipe end connection assembly; 3. No. 1 translation seat; 4. three-jaw chuck; 5. positioning table; 6. dual-axis translation mechanism; 7. combined clamping mechanism; 8. No. 2 translation seat; 9. slide seat; 10. semicircular connecting plate; 11. semicircular housing; 12. semicircular bearing; 13. arc groove; 14. grinding mechanism; 15. laser sensor; 16. collar; 17. rotating rod; 18. stopper; 19. fixed bottom plate; 20. No. 1 slide rail; 21. No. 1 slider; 22. No. 2 slide rail; 23. No. 2 slider; 24. threaded rod; 25. guide slide rod; 26. threaded sleeve; 27. guide slide sleeve; 28. Motor; 29. ​​Semicircular outer plate; 30. Semicircular lining plate; 31. Needle roller; 32. No. 1 protrusion; 33. Limit shaft; 34. No. 2 protrusion; 35. No. 1 spring; 36. Groove; 37. Limit nut; 38. Grinding wheel; 39. Small motor; 40. Strip notch; 41. Mounting seat; 42. Guide block; 43. No. 2 spring; 44. Boss; 45. Support plate; 46. Strip slide groove; 47. Limit block; 48. Spline short shaft; 49. No. 1 bevel gear; 50. No. 2 bevel gear; 51. Internal gear sleeve; 52. No. 3 bevel gear; 53. No. 4 bevel gear; 54. Bracket; 55. Support wheel; 56. Welding avoidance groove. DETAILED DESCRIPTION

[0038] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0039] refer to Figures 1 to 14The automated truck pipeline welding device shown in the figure comprises two sets of symmetrically arranged pipe end clamping assemblies 1 and a pipe end connecting assembly 2 arranged between the two sets of pipe end clamping assemblies 1, each set of pipe end clamping assemblies 1 comprises a No. 1 translation seat 3 and a three-jaw chuck 4 arranged on the No. 1 translation seat 3, the pipe end connecting assembly 2 comprises a positioning platform 5, a double-axis translation mechanism 6 and two sets of symmetrically arranged combined clamping mechanisms 7, the positioning platform 5 is fixedly arranged, the double-axis translation mechanism 6 is arranged on the positioning platform 5, the double-axis translation mechanism 6 comprises a No. 2 translation seat 8 and two sets of symmetrically arranged on the No. 2 translation seat 8. The slide seat 9 on the shift seat 8, each group of combined clamping mechanisms 7 are arranged on the corresponding slide seat 9, each group of combined clamping mechanisms 7 includes a semicircular connecting plate 10 and two groups of symmetrically arranged semicircular shells 11, the semicircular shells 11 are connected to the slide seat 9, the semicircular connecting plate 10 is arranged between the two groups of semicircular shells 11, and the semicircular connecting plate 10 connects the two groups of semicircular shells 11, each group of semicircular shells 11 is provided with a semicircular bearing 12, each semicircular connecting plate 10 is provided with an arc groove 13 on the top, and a grinding mechanism 14 (such as Figure 8 As shown), a laser sensor 15 is provided on the outer wall of the other semicircular connecting plate 10, and a positioning mechanism is provided on the No. 2 translation seat 8. The positioning mechanism includes a collar 16 and a rotating rod 17. The collar 16 is connected to the No. 2 translation seat 8, one end of the rotating rod 17 is hinged to the collar 16, and a stopper 18 is provided on the other end of the rotating rod 17.

[0040] The device is used to weld two pipes end to end, and can ensure that the two pipes are coaxial during welding. The specific welding process is as follows: the two pipes correspond to two three-jaw chucks 4 respectively, and one end of the pipe is clamped by the three-jaw chuck 4. When one end of the pipe is clamped by the three-jaw chuck 4, the two pipes are coaxial and horizontal. After that, one of the No. 1 translation seats 3 first drives the corresponding three-jaw chuck 4 to translate toward the positioning platform 5. When the outer end of the pipe is moved to the top of the positioning platform 5, the current No. 1 translation seat 3 stops. After that, the positioning stage of the pipe end connection assembly 2 is entered. First, the rotating rod 17 is rotated downward to make the rotating rod 17 horizontal, and then the No. 2 translation seat 8 drives the collar 16 to translate toward the pipe close to the positioning platform 5. When the collar 16 is sleeved on the pipe, the stopper 18 provided on the rotating rod 17 will move toward the end of the pipe. When the stopper 18 conflicts with the end of the pipe, the No. 2 translation seat 8 stops moving. At this time, the arc groove 13 on each semicircular connecting plate 10 corresponds to the end of the pipe (such as Figure 7As shown), the rotating rod 17 is then rotated upward to separate the stopper 18 from the pipe. When the stopper 18 is separated from the pipe, the other No. 1 translation seat 3 drives the corresponding three-jaw chuck 4 to translate toward the positioning platform 5. During this process, one of the pipes will gradually approach the other pipe, and finally the outer ends of the two pipes will collide with each other above the positioning platform 5. At this time, the connecting seam between the outer ends of the two pipes will be in the middle of the arc groove 13. After that, the two sets of slide seats 9 will translate toward each other, so that the two sets of merging and clamping mechanisms 7 will merge toward each other. During this process, each set of merging and clamping mechanisms The two groups of semicircular outer shells 11 in 7 will be respectively sleeved on the outer walls of the two pipes. When the two groups of merging and clamping mechanisms 7 are merged, the corresponding pair of semicircular outer shells 11 will be merged into a circle and sleeved on the corresponding pipes. At the same time, the corresponding pair of semicircular bearings 12 will be merged into a circle and clamp the corresponding pipes. Finally, the two pipes will be connected through the two groups of merging and clamping mechanisms 7. When the paired semicircular outer shells 11 are merged, the two semicircular connecting plates 10 will also be merged into a circle. At this time, the two semicircular connecting plates 10 in a circle will be sleeved outside the conflicting ends of the two pipes (such as Fig.13 As shown), the two arc-shaped grooves 13 will merge into a welding avoidance groove 56;

[0041] When installing the welding gun, ensure that the output end of the welding gun is directly above the welding avoidance groove 56. However, during actual welding, the lengths of the pipes are different, so the position of the welding gun needs to be adjusted in real time. The default axial direction of the pipe is the Y axis. No matter how the length of the pipe changes, the position of the welding gun on the Z axis and the X axis will not change. Therefore, the welding gun only needs to change its position on the Y axis. When installing the welding gun, a transverse movement frame (not shown in the figure) can be set above the positioning table 5. The welding gun can be translated along the axial direction of the pipe through the transverse movement mechanism. At the same time, the welding gun is provided with a receiver (not shown in the figure) that cooperates with the laser sensor 15. When the two sets of merging and clamping mechanisms 7 are merged, the welding gun will move laterally. When the laser sensor 15 corresponds to the receiver, the welding gun stops moving, thereby positioning the welding gun, thereby ensuring that the output end of the welding gun corresponds to the welding avoidance groove 56. Due to the welding avoidance groove 56 is positioned in advance with the positioning mechanism and the connecting seam between the outer ends of the two pipes, so that it can be ensured that the welding gun can be accurately aligned with the connecting seam between the outer ends of the two pipes. When the position of the welding gun is fixed, the two three-jaw chucks 4 will respectively drive the two pipes to rotate in the same direction and at the same speed. During this process, the semicircular bearing 12 arranged in the semicircular outer shell 11 will play a sliding role to ensure that there is no hard friction between the pipe and the semicircular outer shell 11. When the pipe rotates, the welding gun can weld the head and tail of the two pipes through the welding avoidance groove 56. Then, after the pipe rotates one circle, the head and tail welding of the two pipes is completed. When the two pipes are welded head to tail, the grinding mechanism 14 arranged on one of the semicircular connecting plates 10 will also grind the welding slag on the pipe. When the two pipes are welded head to tail into one pipe, the two sets of merging and clamping mechanisms 7 start to translate in the opposite direction, and finally the pipe merged between the two three-jaw chucks 4 can be removed.

[0042] In order to show how the first translation seat 3 translates, the following features are set:

[0043] Both sides of the positioning platform 5 are provided with a No. 1 translation drive mechanism, each No. 1 translation drive mechanism comprises a fixed bottom plate 19, a plurality of No. 1 slide rails 20 and a plurality of No. 1 slide blocks 21, and the fixed bottom plate 19 is arranged horizontally (such as Figure 2 As shown), a number of No. 1 slide rails 20 are evenly distributed on the fixed base plate 19 along the horizontal direction, each No. 1 slide rail 20 is horizontal, each No. 1 slider 21 slides on the No. 1 slide rail 20, and the No. 1 translation seat 3 is fixedly connected to the number of No. 1 sliders 21.

[0044] Each No. 1 slider 21 is translated on the corresponding No. 1 slide rail 20 by electric drive, and a plurality of No. 1 sliders 21 are displaced synchronously, so that the No. 1 slider 21 can drive the entire No. 1 translation seat 3 to translate.

[0045] In order to show how the second translation seat 8 translates, the following features are set:

[0046] A No. 2 translation drive mechanism is provided on the top of the positioning platform 5, and the No. 2 translation drive mechanism includes a plurality of No. 2 slide rails 22 and a plurality of No. 2 sliders 23. The plurality of No. 2 slide rails 22 are evenly distributed on the top of the positioning platform 5 along the horizontal direction, and each No. 2 slider 23 slides on the corresponding No. 2 slide rail 22. The No. 2 translation seat 8 is fixedly connected to the plurality of No. 2 sliders 23.

[0047] Each No. 2 slider 23 is translated on the corresponding No. 2 slide rail 22 by electric drive, and a plurality of No. 2 sliders 23 are displaced synchronously, so that the No. 2 slider 23 can drive the entire No. 2 translation seat 8 to translate.

[0048] In order to show how the two slides 9 can be translated, the following features are set:

[0049] A screw drive mechanism is provided at the top of the No. 2 translation seat 8, and the screw drive mechanism includes a threaded rod 24 and two guide slide rods 25. The threaded rod 24 is horizontally connected to the No. 2 translation seat 8 for rotation. The two guide slide rods 25 are symmetrically arranged on both sides of the threaded rod 24, each guide slide rod 25 is parallel to the threaded rod 24, and each guide slide rod 25 is fixedly connected to the No. 2 translation seat 8. A threaded sleeve 26 and two guide slide sleeves 27 are fixedly provided at the bottom of each slide seat 9. The threaded sleeve 26 is threadedly matched with the threaded rod 24, and each guide slide sleeve 27 is sleeved on the corresponding guide slide rod 25. A motor 28 connected to the threaded rod 24 is fixedly provided on the No. 2 translation seat 8.

[0050] The threaded rod 24 is provided with two threaded portions with opposite rotation directions, and the two threaded sleeves 26 are respectively threadedly matched with the two threaded portions on the threaded rod 24. When the motor 28 is started, the threaded rod 24 rotates, and each slide 9 is driven to translate. Since the two threaded portions on the threaded rod 24 rotate in opposite directions, the sliding directions of the two slides 9 are opposite. When the pipeline needs to be clamped, the two slides 9 will move toward each other, thereby driving the paired semicircular shells 11 to clamp the pipeline. When the two pipelines are welded end to end, the two slides 9 will move back to back, thereby separating the paired semicircular shells 11 from each other.

[0051] In order to show the specific structure of each semicircular bearing 12, the following features are set:

[0052] Each semicircular bearing 12 includes a semicircular outer plate 29, a semicircular lining plate 30 and a plurality of needle rollers 31. The semicircular outer plate 29 is arranged in the corresponding semicircular housing 11 (such as Figure 8As shown), the semicircular outer plate 29 is coaxial with the semicircular outer shell 11, the semicircular lining plate 30 is fixed on the inner wall of the semicircular outer plate 29, and the semicircular lining plate 30 is coaxial with the semicircular outer plate 29, and a plurality of needle rollers 31 are evenly distributed along the circumferential direction of the semicircular lining plate 30, and the axial direction of each needle roller 31 is translated with the axial direction of the semicircular lining plate 30, and each needle roller 31 is rotationally connected to the semicircular lining plate 30.

[0053] When the two slide seats 9 slide toward each other, each semicircular outer shell 11 will drive the semicircular outer plate 29 to approach the outer wall of the pipe. When the two semicircular outer shells 11 are merged, the two semicircular outer plates 29 and the two semicircular lining plates 30 are merged at the same time. Finally, several roller needles 31 will be pressed on the outer wall of the pipe, and the friction between the pipe and the semicircular outer shell 11 will be reduced by the roller needles 31.

[0054] In order to ensure that the semicircular bearing 12 after closing the circle can clamp the corresponding pipe, the following features are set:

[0055] Each semicircular outer plate 29 is formed with a plurality of No. 1 protrusions 32 (such as Fig.12 As shown in the figure, each No. 1 protrusion 32 is formed with a limit shaft 33, and the inner wall of each semicircular shell 11 is formed with a plurality of No. 2 protrusions 34 corresponding to the No. 1 protrusion 32, and each limit shaft 33 passes horizontally through the corresponding No. 2 protrusion 34 and the semicircular shell 11 in sequence, and each limit shaft 33 is sleeved with a No. 1 spring 35, and the two ends of the No. 1 spring 35 respectively conflict with the No. 1 protrusion 32 and the No. 2 protrusion 34, and the outer wall of each semicircular shell 11 is provided with a plurality of grooves 36 corresponding to the limit shaft 33, and a limit nut 37 is screwed on one end of each limit shaft 33 passing through the semicircular shell 11.

[0056] In the initial state, the No. 1 spring 35 will release its elastic force to drive the semicircular outer plate 29 to extend outward. During this process, the limiting nut 37 provided on the limiting shaft 33 will interfere with the inner wall of the groove 36 to prevent the limiting shaft 33 from detaching from the semicircular outer shell 11. When the two semicircular outer shells 11 approach each other and press on the pipeline, each semicircular lining plate 30 will compress the corresponding No. 1 spring 35, so that the No. 1 spring 35 generates elastic force, and the No. 1 spring 35 is used to ensure that each semicircular lining plate 30 can be pressed on the outer wall of the pipeline.

[0057] In order to show the specific structure of the grinding mechanism 14, the following features are set:

[0058] The grinding mechanism 14 includes a grinding wheel 38, a transmission member and a small motor 39. The bottom of each semicircular connecting plate 10 is provided with a strip-shaped notch 40, and the grinding wheel 38 rotates in one of the strip-shaped notches 40 (such as Fig.10As shown), the axial direction of the grinding wheel 38 is parallel to the axial direction of the semicircular connecting plate 10, the small motor 39 is located beside the grinding wheel 38, and the small motor 39 is fixedly connected to the corresponding semicircular connecting plate 10, and the transmission member connects the small motor 39 to the grinding wheel 38.

[0059] When the small motor 39 is started, the small motor 39 will drive the grinding wheel 38 to rotate through the transmission part. During the use of time, the direction of the grinding wheel 38 is opposite to the direction of the pipeline. Therefore, when the joint seam between the two pipelines is welded, the welding part will turn to the grinding wheel 38, and finally the welding slag on the welding part will be ground off by the high-speed rotating grinding wheel 38.

[0060] In order to ensure that the grinding wheel 38 can be brought into contact with the outer wall of the pipe, the following features are provided:

[0061] Both ends of the grinding wheel 38 are provided with elastic top seats, each of which includes a mounting seat 41, a guide block 42 and a number of No. 2 springs 43. Two bosses 44 are formed on the outer wall of each semicircular connecting plate 10, and a horizontal support plate 45 is fixed on each boss 44. The mounting seat 41 is fixed on the corresponding support plate 45. A vertical strip slide groove 46 is opened in the mounting seat 41, and the guide block 42 slides in the strip slide groove 46. Each No. 2 spring 43 is vertically fixed in the strip slide groove 46. The two ends of each No. 2 spring 43 respectively conflict with the inner wall of the guide block 42 and the mounting seat 41. Two limit blocks 47 are fixed on the top of the mounting seat 41. The two ends of the grinding wheel 38 are respectively connected to the two guide blocks 42 for rotation.

[0062] The guide block 42 is driven to rise by the elastic force of the No. 2 spring 43, so that the two guide blocks 42 will push up the grinding wheel 38. At this time, the limit block 47 on the mounting seat 41 is used to limit the rising stroke of the guide block 42 to prevent the guide block 42 from escaping from the strip slide groove 46. When the paired semicircular shells 11 move toward each other to clamp the pipe, the grinding wheel 38 in the rising state will gradually descend due to resistance after contacting the pipe. After descending, the grinding wheel 38 will compress the No. 2 spring 43. Then, when the paired semicircular shells 11 merge toward each other, the grinding wheel 38 will always maintain a state of resistance against the outer wall of the pipe through the elasticity of the No. 2 spring 43.

[0063] In order to show the specific structure of the transmission parts, the following features are set:

[0064] The transmission member includes a spline short shaft 48, a first bevel gear group and a second bevel gear group. The spline short shaft 48 is vertically connected to the outer wall of one of the semicircular shells 11 for rotation. The first bevel gear group includes a first bevel gear 49 and a second bevel gear 50 that are meshed with each other. The first bevel gear 49 is coaxially fixed to one end of the grinding wheel 38. An internal gear sleeve 51 sleeved on the spline short shaft 48 is fixedly connected to one of the guide blocks 42. The second bevel gear 50 is coaxially fixed to the internal gear sleeve 51, and the spline short shaft 48 passes through the second bevel gear 50. The second bevel gear group includes a third bevel gear 52 and a fourth bevel gear 53 that are meshed with each other. The third bevel gear 52 is coaxially fixed to the lower end of the spline short shaft 48, and the fourth bevel gear 53 is coaxially fixed to the output end of the small motor 39.

[0065] When the small motor 39 is started, the small motor 39 will drive the No. 4 bevel gear 53 to rotate. When the No. 4 bevel gear 53 rotates, the No. 4 bevel gear 53 will drive the spline short shaft 48 to rotate through the No. 3 bevel gear 52. When the spline short shaft 48 rotates, the spline short shaft 48 will drive the No. 1 bevel gear 49 to rotate through the No. 2 bevel gear 50. Finally, the No. 1 bevel gear 49 will drive the grinding wheel 38 to rotate, and when the grinding wheel 38 is elastically lifted and lowered, the corresponding guide block 42 will drive the corresponding No. 2 bevel gear 50 to lift and lower through the inner gear sleeve 51. That is to say, the No. 2 bevel gear 50 and the No. 1 bevel gear 49 will lift and lower synchronously, finally ensuring that when the position of the grinding wheel 38 in the vertical direction changes, the small motor 39 can still drive the grinding wheel 38 to rotate.

[0066] When one end of the pipe is clamped by the three-jaw chuck 4, in order to prevent the other end of the pipe from falling, the following features are set:

[0067] Both sides of the positioning platform 5 are provided with vertical brackets 54, and the two brackets 54 correspond to the two three-jaw chucks 4 respectively (such as Figure 2 As shown), each bracket 54 is rotatably provided with two symmetrical supporting wheels 55, and the axial direction of each supporting wheel 55 is horizontal.

[0068] When the three-jaw chuck 4 clamps one end of the pipe, the other end of the pipe will be placed between the two supporting wheels 55, and the outer end of the pipe will be lifted by the two supporting wheels 55 to prevent the outer end of the pipe from falling due to the long length of the pipe. When the two three-jaw chucks 4 approach each other, each pipe will slide on the corresponding two supporting wheels 55, and when the pipe rotates, the pipe will rotate between the two supporting wheels 55. At this time, the supporting wheels 55 are used to reduce the friction between the pipe and the bracket 54.

[0069] Working principle:

[0070] The device is used to weld two pipes end to end, and can ensure that the two pipes are coaxial during welding. The specific welding process is as follows: the two pipes correspond to two three-jaw chucks 4 respectively, and one end of the pipe is clamped by the three-jaw chuck 4. When one end of the pipe is clamped by the three-jaw chuck 4, the two pipes are coaxial and horizontal. After that, one of the No. 1 translation seats 3 first drives the corresponding three-jaw chuck 4 to translate toward the positioning platform 5. When the outer end of the pipe is moved to the top of the positioning platform 5, the current No. 1 translation seat 3 stops. After that, the positioning stage of the pipe end connection assembly 2 is entered. First, the rotating rod 17 is rotated downward to make the rotating rod 17 horizontal, and then the No. 2 translation seat 8 drives the collar 16 to translate toward the pipe close to the positioning platform 5. When the collar 16 is sleeved on the pipe, the stopper 18 provided on the rotating rod 17 will move toward the end of the pipe. When the stopper 18 conflicts with the end of the pipe, the No. 2 translation seat 8 stops moving. At this time, the arc groove 13 on each semicircular connecting plate 10 corresponds to the end of the pipe (such as Figure 7 As shown), the rotating rod 17 is then rotated upward to separate the stopper 18 from the pipe. When the stopper 18 is separated from the pipe, the other No. 1 translation seat 3 drives the corresponding three-jaw chuck 4 to translate toward the positioning platform 5. During this process, one of the pipes will gradually approach the other pipe, and finally the outer ends of the two pipes will collide with each other above the positioning platform 5. At this time, the connecting seam between the outer ends of the two pipes will be in the middle of the arc groove 13. After that, the two sets of slide seats 9 will translate toward each other, so that the two sets of merging and clamping mechanisms 7 will merge toward each other. During this process, the two sets of semicircular shells 11 in each set of merging and clamping mechanisms 7 They will be respectively sleeved on the outer walls of the two pipes. When the two sets of merging and clamping mechanisms 7 are merged, the corresponding pair of semicircular shells 11 will be merged into a circle and sleeved on the corresponding pipes. At the same time, the corresponding pair of semicircular bearings 12 will be merged into a circle and clamp the corresponding pipes. Finally, the two pipes will be connected through the two sets of merging and clamping mechanisms 7. When the paired semicircular shells 11 are merged, the two semicircular connecting plates 10 will also be merged into a circle. At this time, the two semicircular connecting plates 10 in a circle will be sleeved outside the conflicting ends of the two pipes, and the two arc grooves 13 will be merged into a welding avoidance groove 56 (such as Fig.13 shown);

[0071] When installing the welding gun, ensure that the output end of the welding gun is directly above the welding avoidance groove 56. However, during actual welding, the lengths of the pipes are different, so the position of the welding gun needs to be adjusted in real time. The default axial direction of the pipe is the Y axis. No matter how the length of the pipe changes, the position of the welding gun on the Z axis and the X axis will not change. Therefore, the welding gun only needs to change its position on the Y axis. When installing the welding gun, a transverse movement frame (not shown in the figure) can be set above the positioning table 5. The welding gun can be translated along the axial direction of the pipe through the transverse movement mechanism. At the same time, the welding gun is provided with a receiver (not shown in the figure) that cooperates with the laser sensor 15. When the two sets of merging and clamping mechanisms 7 are merged, the welding gun will move laterally. When the laser sensor 15 corresponds to the receiver, the welding gun stops moving, thereby positioning the welding gun, thereby ensuring that the output end of the welding gun corresponds to the welding avoidance groove 56. Due to the welding avoidance groove 56 is positioned in advance with the positioning mechanism and the connecting seam between the outer ends of the two pipes, so that it can be ensured that the welding gun can be accurately aligned with the connecting seam between the outer ends of the two pipes. When the position of the welding gun is fixed, the two three-jaw chucks 4 will respectively drive the two pipes to rotate in the same direction and at the same speed. During this process, the semicircular bearing 12 arranged in the semicircular outer shell 11 will play a sliding guide role to ensure that there is no hard friction between the pipe and the semicircular outer shell 11. When the pipe rotates, the welding gun can weld the head and tail of the two pipes through the welding avoidance groove 56. Then, after the pipe rotates one circle, the head and tail welding of the two pipes is completed. When the two pipes are welded head to tail, the grinding mechanism 14 arranged on one of the semicircular connecting plates 10 will also grind the welding slag on the pipe. When the two pipes are welded head to tail into one pipe, the two sets of merging and clamping mechanisms 7 start to translate in the opposite direction, and finally the merged pipe between the two three-jaw chucks 4 can be removed.

[0072] The above embodiments only express one or several implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the attached claims.

Claims

1. An automated truck pipeline welding device, characterized in that: The invention comprises two groups of symmetrically arranged pipe end clamping assemblies (1) and a pipe end connecting assembly (2) arranged between the two groups of pipe end clamping assemblies (1), each group of pipe end clamping assemblies (1) comprises a No. 1 translation seat (3) and a three-jaw chuck (4) arranged on the No. 1 translation seat (3), the pipe end connecting assembly (2) comprises a positioning platform (5), a biaxial translation mechanism (6) and two groups of symmetrically arranged combined clamping mechanisms (7), the positioning platform (5) is fixedly arranged, the biaxial translation mechanism (6) is arranged on the positioning platform (5), the biaxial translation mechanism (6) comprises a No. 2 translation seat (8) and two groups of slide seats (9) symmetrically arranged on the No. 2 translation seat (8), each group of combined clamping mechanisms (7) is arranged on the corresponding slide seat (9), and each group of combined clamping mechanisms (7) comprises a semicircular connecting plate (10) and two groups of symmetrically arranged semicircular outer shells (11), the semicircular outer shell (11) is connected to the slide seat (9), the semicircular connecting plate (10) is arranged between the two groups of semicircular outer shells (11), and the semicircular connecting plate (10) connects the two groups of semicircular outer shells (11), each group of semicircular outer shells (11) is provided with a semicircular bearing (12), the top of each semicircular connecting plate (10) is provided with an arc groove (13), the bottom of one semicircular connecting plate (10) is provided with a grinding mechanism (14), the outer wall of the other semicircular connecting plate (10) is provided with a laser sensor (15), the second translation seat (8) is provided with a positioning mechanism, the positioning mechanism comprises a collar (16) and a rotating rod (17), the collar (16) is connected to the second translation seat (8), one end of the rotating rod (17) is hinged to the collar (16), and the other end of the rotating rod (17) is provided with a stopper (18).

2. The automatic truck pipeline welding device according to claim 1 is characterized in that: A No. 1 translation drive mechanism is provided on both sides of the positioning platform (5), each No. 1 translation drive mechanism comprises a fixed base plate (19), a plurality of No. 1 slide rails (20) and a plurality of No. 1 sliders (21), the fixed base plate (19) is arranged horizontally, the plurality of No. 1 slide rails (20) are evenly distributed on the fixed base plate (19) along the horizontal direction, each No. 1 slide rail (20) is horizontal, each No. 1 slider (21) slides on the No. 1 slide rail (20), and the No. 1 translation seat (3) is fixedly connected to the plurality of No. 1 sliders (21).

3. The automatic truck pipeline welding device according to claim 1 is characterized in that: A No. 2 translation drive mechanism is provided on the top of the positioning platform (5), and the No. 2 translation drive mechanism comprises a plurality of No. 2 slide rails (22) and a plurality of No. 2 sliders (23). The plurality of No. 2 slide rails (22) are evenly distributed on the top of the positioning platform (5) in a horizontal direction, and each No. 2 slider (23) slides on a corresponding No. 2 slide rail (22). The No. 2 translation seat (8) is fixedly connected to the plurality of No. 2 sliders (23).

4. The automated truck pipeline welding device according to claim 1, characterized in that: A screw drive mechanism is provided at the top of the No. 2 translation seat (8), and the screw drive mechanism comprises a threaded rod (24) and two guide slide rods (25). The threaded rod (24) is horizontally connected to the No. 2 translation seat (8) for rotation. The two guide slide rods (25) are symmetrically arranged on both sides of the threaded rod (24), each guide slide rod (25) is parallel to the threaded rod (24), and each guide slide rod (25) is fixedly connected to the No. 2 translation seat (8). A threaded sleeve (26) and two guide slide sleeves (27) are fixedly provided at the bottom of each slide seat (9). The threaded sleeve (26) is threadably matched with the threaded rod (24), and each guide slide sleeve (27) is sleeved on the corresponding guide slide rod (25). A motor (28) connected to the threaded rod (24) is fixedly provided on the No. 2 translation seat (8).

5. The automatic truck pipeline welding device according to claim 1 is characterized in that: Each semicircular bearing (12) comprises a semicircular outer plate (29), a semicircular lining plate (30) and a plurality of needle rollers (31). The semicircular outer plate (29) is arranged in the corresponding semicircular outer shell (11), and the semicircular outer plate (29) and the semicircular outer shell (11) are coaxial. The semicircular lining plate (30) is fixed on the inner wall of the semicircular outer plate (29), and the semicircular lining plate (30) and the semicircular outer plate (29) are coaxial. The plurality of needle rollers (31) are evenly distributed along the circumferential direction of the semicircular lining plate (30). The axial direction of each needle roller (31) is translated with the axial direction of the semicircular lining plate (30), and each needle roller (31) is rotationally connected to the semicircular lining plate (30).

6. The automatic truck pipeline welding device according to claim 5, characterized in that: A plurality of No. 1 protrusions (32) are formed on the outer wall of each semicircular outer plate (29), and a limiting shaft (33) is formed on each No. 1 protrusion (32). A plurality of No. 2 protrusions (34) corresponding to the No. 1 protrusions (32) are formed on the inner wall of each semicircular outer shell (11). Each limiting shaft (33) passes horizontally through the corresponding No. 2 protrusion (34) and the semicircular outer shell (11) in sequence. A No. 1 spring (35) is sleeved on each limiting shaft (33), and the two ends of the No. 1 spring (35) respectively contact the No. 1 protrusion (32) and the No. 2 protrusion (34). A plurality of grooves (36) corresponding to the limiting shaft (33) are opened inwardly on the outer wall of each semicircular outer shell (11), and a limiting nut (37) is screwed on one end of each limiting shaft (33) passing through the semicircular outer shell (11).

7. The automatic truck pipeline welding device according to claim 1, characterized in that: The grinding mechanism (14) comprises a grinding wheel (38), a transmission member and a small motor (39). A strip notch (40) is provided at the bottom of each semicircular connecting plate (10). The grinding wheel (38) rotates in one of the strip notches (40), and the axial direction of the grinding wheel (38) is parallel to the axial direction of the semicircular connecting plate (10). The small motor (39) is located beside the grinding wheel (38), and the small motor (39) is fixedly connected to the corresponding semicircular connecting plate (10). The transmission member transmits and connects the small motor (39) and the grinding wheel (38).

8. The automatic truck pipeline welding device according to claim 7, characterized in that: Both ends of the grinding wheel (38) are provided with elastic top seats, each elastic top seat comprises a mounting seat (41), a guide block (42) and a plurality of No. 2 springs (43), two bosses (44) are formed on the outer wall of each semicircular connecting plate (10), a horizontal support plate (45) is fixed on each boss (44), the mounting seat (41) is fixed on the corresponding support plate (45), a vertical strip slide groove (46) is provided in the mounting seat (41), the guide block (42) slides in the strip slide groove (46), each No. 2 spring (43) is vertically fixed in the strip slide groove (46), the two ends of each No. 2 spring (43) are respectively in conflict with the guide block (42) and the inner wall of the mounting seat (41), two limit blocks (47) are fixed on the top of the mounting seat (41), and the two ends of the grinding wheel (38) are respectively connected to the two guide blocks (42) for rotation.

9. The automatic truck pipeline welding device according to claim 7, characterized in that: The transmission member comprises a spline short shaft (48), a first bevel gear group and a second bevel gear group. The spline short shaft (48) is vertically connected to the outer wall of one of the semicircular shells (11) for rotation. The first bevel gear group comprises a first bevel gear (49) and a second bevel gear (50) that mesh with each other. The first bevel gear (49) is coaxially fixedly connected to one end of the grinding wheel (38). An inner gear sleeve (51) sleeved on the spline short shaft (48) is fixedly connected to one of the guide blocks (42). The second bevel gear (50) is coaxially fixedly connected to the inner gear sleeve (51), and the spline short shaft (48) passes through the second bevel gear (50). The second bevel gear group comprises a third bevel gear (52) and a fourth bevel gear (53) that mesh with each other. The third bevel gear (52) is coaxially fixedly connected to the lower end of the spline short shaft (48), and the fourth bevel gear (53) is coaxially fixedly connected to the output end of the small motor (39).

10. The automatic truck pipeline welding device according to claim 1, characterized in that: Vertical brackets (54) are provided on both sides of the positioning platform (5), and the two brackets (54) correspond to the two three-jaw chucks (4) respectively. Two symmetrical supporting wheels (55) are rotatably provided on each bracket (54), and the axial direction of each supporting wheel (55) is horizontal.

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