Steel pipe pole ladder stand assembly welding tool

Abstract

The invention belongs to the technical field of welding, and particularly relates to a steel pipe pole ladder stand assembly welding tool which comprises a rack, a welding gun, a driving module and a supporting module. The driving module comprises a chuck and a driving mechanism I for driving the chuck to move towards the welding gun; the chuck is used for fixedly clamping one end of the steel pipe pole; the supporting module comprises a first supporting plate and a second supporting plate, the first supporting plate and the second supporting plate are provided with receding holes and guide grooves, the second supporting plate is rotationally assembled on the first mounting frame, and the second supporting plate rotates to enable every two adjacent guide grooves to form a preset included angle in the vertical direction; the first supporting plate is located between the rack and the chuck, and the first mounting frame is assembled on the rack in a sliding mode so that the chuck can move towards the welding gun; the first supporting plate and the first mounting frame are arranged on the machine frame at a preset interval so that the foot pins can penetrate through the guide grooves. The technical problems that in the welding process, the number of supporting points for the steel pipe pole is small, the steel pipe pole deforms and twists, and then the welding quality is affected can be solved.

Description

Technical Field

[0001] The invention relates to the technical field of welding, and in particular to a welding tool for a steel pipe rod ladder assembly. Background Art

[0002] The spike ladder includes a steel pipe pole and spikes welded on the outer surface of the steel pipe pole. It has a simple structure and occupies a small space. It is used in power systems, telecommunication tower maintenance and other industries that require vertical climbing. The steel pipe pole is long. When welding the spikes, it is necessary to provide effective support for the steel pipe pole to ensure the straightness of the steel pipe pole and prevent bending force on the outer surface of the steel pipe pole, so that the welding operation is smoother and the occurrence of welding defects is reduced.

[0003] The Chinese patent application document with the publication number CN113263289A discloses a steel pipe rod cross arm welding clamping device, including a counterweight base, the top of the two sides of the counterweight base are respectively fixedly connected with a first support frame and a second support frame, the top of the first support frame is provided with a left side plate, the top of the second support frame is provided with a right side plate, a steel pipe rod clamping mechanism is provided between the left side plate and the right side plate, the first support frame is rotatably connected with a rotating shaft, one end of the rotating shaft is fixedly connected to a side surface of the left side plate, and a flip motor is fixedly installed on one side of the second support frame, and the output shaft end of the flip motor is fixedly connected to a side surface of the right side plate. The above patent document applies to provide support for steel pipe rod welding, but there are fewer support points for the steel pipe rod, and the distance between the support points or between the support points and the end of the steel pipe rod is long. Under the action of gravity, the middle part of the steel pipe rod is prone to local buckling, and the weld at the bend of the steel pipe rod will produce additional stress concentration, resulting in cracks or other forms of damage in the welding area, reducing the overall strength and durability of the structural parts and affecting the welding quality. Summary of the invention

[0004] The invention provides a steel pipe rod climbing ladder assembly welding tool to solve the technical problems of few supporting points for the steel pipe rod and deformation and twisting of the steel pipe rod during welding, thereby affecting the welding quality.

[0005] To solve the above problems, the present invention adopts the following technical solutions: A steel pipe rod climbing ladder assembly welding tool, comprising a frame, a welding gun arranged on the frame, a driving module for driving the steel pipe rod to move so that the welding part of the steel pipe rod is transported to the welding nozzle of the welding gun, and a supporting module for supporting the steel pipe rod; The driving module includes a chuck, a driving assembly for driving the chuck to rotate around its own axis, and a driving mechanism for driving the chuck to move toward the welding gun. The chuck is used to fix and clamp one end of the steel pipe rod; The support module includes a support plate 1 and a support plate 2 which are alternately arranged along the extension direction of the chuck axis. The support plate 1 and the support plate 2 are provided with avoidance holes for inserting the steel pipe rod and guide grooves for placing the steel pipe rod into the avoidance holes. The support plate 2 is rotated around the chuck axis and assembled on the mounting frame 1. The support plate 2 rotates so that two adjacent guide grooves form a predetermined angle in the vertical direction to correct the steel pipe rod inserted into the avoidance hole so that the axis of the steel pipe rod coincides with the axis of the chuck; the support plate 1 and the mounting frame 1 located between the frame and the chuck are slidably assembled on the frame to shorten the distance between the support plate 1, the mounting frame 1 and the frame, so that the chuck moves toward the welding gun; the support plate 1 and the mounting frame 1 located on the side of the frame away from the chuck are arranged on the frame at a predetermined distance so that the welded foot nails pass through the guide grooves along the extension direction of the chuck axis.

[0006] The beneficial effects are as follows: the support plate 2 can rotate so that the opening directions of two adjacent guide grooves are different, and the inner wall of the avoidance hole can calibrate the steel pipe rod so that the axis of the steel pipe rod coincides with the axis around which the chuck rotates. Under the drive of the drive mechanism 1, the steel pipe rod can be smoothly transported along the extension direction of the chuck; the support plate 1 and the support plate 2 located between the frame and the chuck support the unwelded steel pipe rod part, and the support plate 1 and the support plate 2 on the side of the frame away from the chuck support the welded steel pipe rod part. There are many supporting points, and the shape of the outer peripheral surface of the steel pipe rod between the supporting points is basically not affected by gravity, which effectively prevents the steel pipe rod from twisting and deformation, thereby ensuring the welding quality.

[0007] Furthermore, the opening direction of the guide groove on the first supporting plate is inclined upward.

[0008] The beneficial effect is: the support plate 2 located between the frame and the chuck is rotated so that the opening directions of all the guide grooves between the frame and the chuck are inclined upward, and the steel pipe rod to be welded is passed through the guide groove and placed into the avoidance hole. The steel pipe rod is easy to install and effectively prevents the steel pipe rod from slipping out of the guide groove.

[0009] Furthermore, a weld axial strength detection mechanism is provided on the frame, and the axial strength detection mechanism includes a rotating rod 1, a driving component 11 and a pressure sensor 1. The rotating rod 1 is rotatably assembled on the frame, and the foot nail is used to press one end of the rotating rod 1 to generate pressure to drive the rotating rod 1 to rotate when the foot nail moves toward the direction of the discharging support mechanism. The fixed end of the driving component 11 is fixedly assembled on the frame, and the pressure sensor 1 is located between the output end of the driving component 11 and the other end of the rotating rod 1. The pressure of the foot nail on one end of the rotating rod 1 corresponds to the pressure of the other end of the rotating rod 1 on the pressure sensor 1. When the pressure value measured by the pressure sensor 1 is a predetermined value, the output end of the driving component 11 moves toward the direction close to the frame, and the one end of the rotating rod 1 rotates in the direction away from the steel pipe rod, so that the foot nail continues to move toward the direction of the discharging support module.

[0010] The beneficial effect is that the pressure of the foot nail on one end of the rotating rod corresponds to the pressure of the other end of the rotating rod on the pressure sensor one, and the pressure of the foot nail on the one end of the rotating rod one can be detected by the pressure value of the pressure sensor one. The better the quality of the weld, the higher the pressure value measured by the pressure sensor one. When the pressure value detected by the pressure sensor one is a predetermined value and the weld is intact, it proves that the bearing capacity of the weld along the axial direction of the steel pipe rod meets the requirements, and the strength of the weld can withstand the pressure perpendicular to the ground generated by the foot nail when the staff climbs; the present invention can detect each foot nail, and the detection process does not affect the subsequent welding process, thereby ensuring the quality of the finished product without reducing the production efficiency.

[0011] Furthermore, the rotating rod 1 is rotatably assembled on the frame through the rotating shaft 1, and an elastic component is provided between the rotating shaft 1 and the frame. The elastic component has elastic potential energy for driving the other end of the rotating rod 1 to move in the direction of the pressure sensor 1.

[0012] The beneficial effect is that the elastic potential energy of the elastic component can make the rotation angle of the rotating rod 1 always correspond to the displacement of the output end of the driving component 10, so that the staff can adjust the rotation angle of the rotating rod 1 according to the actual production situation.

[0013] Furthermore, a weld circumferential strength detection mechanism is provided on the frame, and the weld circumferential strength detection mechanism includes a rotating rod 2, a driving component 12 and a pressure sensor 2. The rotating rod 2 is rotatably assembled on the frame, and the foot nail is used to press one end of the rotating rod 2 when it rotates to generate pressure to drive the rotating rod 2 to rotate. The fixed end of the driving component 12 is fixedly assembled on the frame, and the pressure sensor 2 is located between the output end of the driving component 12 and the other end of the rotating rod 2. The pressure of the foot nail on one end of the rotating rod 2 corresponds to the pressure of the other end of the rotating rod 2 on the pressure sensor 2. When the pressure value measured by the pressure sensor 2 is a predetermined value, the output end of the driving component 12 moves in a direction close to the steel pipe rod, and one end of the rotating rod 2 rotates in a direction away from the steel pipe rod, so that the foot nail continues to rotate.

[0014] The beneficial effect is that the pressure of the foot nail on one end of the rotating rod 2 corresponds to the pressure of the other end of the rotating rod 2 on the pressure sensor 2, and the pressure of the foot nail on the one end of the rotating rod 2 can be detected by the pressure value of the pressure sensor 2. The better the quality of the weld, the higher the pressure values ​​measured by the pressure sensor 1 and the pressure sensor 2. When the pressure values ​​detected by the pressure sensor 1 and the pressure sensor 2 are the predetermined values ​​and the weld is intact, it proves that the bearing capacity of the weld along the circumference of the steel pipe rod meets the requirements, and the strength of the weld can withstand the horizontal thrust perpendicular to the foot nail generated by the staff when climbing.

[0015] Furthermore, a feeding module is provided on the frame, which includes a material holding rack for placing foot nails, a driving mechanism 2 for driving the material holding rack close to the welding gun, a clamping mechanism for clamping the foot nails and a driving mechanism 3 for driving the clamping mechanism to move. The material holding rack is provided with a plurality of placement slots for placing the foot nails, the clamping mechanism includes a movably connected block 1 and block 2, and blocks 1 and 2 are provided with cavities adapted to the foot nails, which are used to fix and clamp the foot nails when block 1 and block 2 are in contact with each other; the driving mechanism 3 includes a plurality of driving components, and the plurality of driving components are used to move the foot nails to a position where they are in contact with the outer circumference of the steel pipe rod and drive the contacting portion between the foot nail and the steel pipe rod and contact the welding gun.

[0016] The beneficial effect is that the feeding module can automatically transport the foot nails to the steel pipe rod, thereby increasing the degree of automation of the device.

[0017] Furthermore, the chuck is fixedly mounted on the mobile frame, the mobile frame is slidably mounted on the frame along the chuck axis direction, the support plate 1 and the mounting frame 1 are detachably mounted on the frame, and the support plate 1 and the mounting frame 1 are detachably mounted on the mobile frame.

[0018] Furthermore, the fixed ends of the drive components nine and ten are fixedly assembled on the support plate one and the mounting frame one, and the mobile frame three is provided with a through-hole for the output end of the drive component nine to be installed therein. When the output end of the drive component nine is located in the through-hole, the support plate one, the mounting frame one and the mobile frame are fixedly connected; the output end of the drive component ten is fixedly assembled with a hook, and the frame is provided with a slot one adapted to the hook, and the mounting frame one and the support plate one are provided with a slot two adapted to the hook adjacent to and facing away from the frame. When the drive hook of the drive component ten is engaged in the slot one and the slot two, the support plate one and / or the mounting frame one are fixedly connected to the frame. The beneficial effect is that when the chuck moves in the direction close to the welding gun, the output end of the driving component nine can leave the penetration hole, so that the supporting frame one and the mounting frame one are separated from the moving frame in time, and the movement of the moving frame will not be affected; when the moving frame moves toward the discharge support module until the supporting frame one, the mounting frame one and the frame are successively fitted with each other, the driving component ten drives the hook to enter the slot, and the supporting frame one and the mounting frame one are fixedly connected to the frame; after the welding is completed, when the chuck moves in the direction away from the welding gun, the supporting frame one and the mounting frame one remain stationary, and when the output end of the driving component nine is opposite to the corresponding penetration hole, the hook moves out of the slot, and the output end of the driving component nine penetrates into the penetration hole, the supporting frame one and the mounting frame one are separated from the frame and fixedly connected to the moving frame, and a gap is generated between the supporting frame one and the mounting frame one, which is convenient for re-supporting the steel pipe rod to be welded, and the device has a high degree of automation, and there is no need to manually adjust the position between the supporting frame one and the mounting frame one.

[0019] The beneficial effects of the present invention are as follows: both the unwelded steel pipe rod and the welded steel pipe rod have multiple support points, which effectively prevents the steel pipe rod from twisting and deforming during the welding process; the support plate two can rotate to change the direction of the guide groove on the support plate two, so that the avoidance holes on the support plate one and the support plate two can support and calibrate the steel pipe rod, so that the axis of the steel pipe rod coincides with the axis of the chuck, thereby ensuring the accuracy of the weld position; the rotation of the support plate two can also make the guide groove on the support plate two and the guide groove on the support plate one have a certain correspondence relationship, so that the welded foot nails can pass through the guide groove while supporting and calibrating the steel pipe rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 This is a schematic diagram of the structure when welding is completed; Figure 3 It is a structural schematic diagram of the welding module; Figure 4 This is a schematic diagram of the split structure of the drive module; Figure 5 It is a schematic diagram of the disassembled structure of the chuck, the connecting rod and the steel pipe rod; Figure 6 It is a schematic diagram of the split structure of the material rack; Figure 7 It is a schematic diagram of the split structure of the clamping and transferring mechanism; Figure 8 It is a schematic diagram of the split structure of the support plate 2 and the mounting frame 1; Fig. 9 is a structural schematic diagram of a support plate 1; Fig.10 This is a schematic diagram of the installation structure of the weld strength detection module; Fig.11 This is a schematic diagram of the split structure of the weld strength detection module; Description of reference numerals: 1. Frame; 2. Welding gun; 3. Steel pipe rod; 4. Foot nail; 5. Mounting frame 1; 6. Mounting frame 2; 7. Mounting frame 3; 8. Mobile frame; 9. Chuck; 10. Drive component 1; 11. Drive component 2; 12. Drive component 3; 13. Drive component 4; 14. Drive component 5; 15. Drive component 6; 16. Drive component 7; 17. Drive component 8; 18. Drive component 9; 19. Drive component 10; 20. Drive component 11; 21. Drive component 12; 22. Bottom plate; 23. Mounting plate; 24. Travel wheel; 25. Connecting rod; 26. Gear 1; 27. Gear 1; 28. Material rack; 29. ​​Place slot; 30, gear two; 31, gear teeth two; 32, block one; 33, block two; 34, cavity; 35, sliding block one; 36, support plate one; 37, support plate two; 38, avoidance hole; 39, guide slot; 40, worm; 41, worm gear groove; 42, flange; 43, limit slot; 44, insertion hole; 45, hook; 46, slot one; 47, rotating rod one; 48, pressure sensor one; 49, shaft one; 50, sliding block two; 51, torsion spring one; 52, rotating rod two; 53, pressure sensor two; 54, shaft two; 55, sliding block three; 56, torsion spring two; 57, slide slot; 58, slot two. DETAILED DESCRIPTION

[0021] 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. Those skilled in the art should know that the embodiments described below are part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0022] A steel pipe rod ladder assembly welding tool, such as Figure 1 and Figure 2 As shown, it includes a frame 1, a welding gun 2 arranged on the frame 1, a driving module for driving the steel pipe rod 3 to move so that the welding point of the steel pipe rod 3 is transported to the welding nozzle of the welding gun 2, a feeding module for placing the foot nails 4 on the steel pipe rod 3 to cooperate with the welding module and the driving module, and a supporting module for supporting the steel pipe rod 3.

[0023] like Figure 3 As shown, the welding module includes two welding guns 2 , a second mounting frame 6 is fixedly mounted on the frame 1 , the welding guns 2 are mounted on the second mounting frame 6 , and a cavity for accommodating the welding guns 2 is provided on the frame 1 .

[0024] like Figure 4As shown, the driving module includes a moving frame 8, a chuck 9, a driving component 10 that drives the chuck 9 to rotate around its own axis, and a driving mechanism 1 that drives the chuck 9 to move toward the welding gun 2. The moving frame 8 includes a base plate 22 and a mounting plate 23 fixed on the base plate 22. A walking wheel 24 is mounted on the bottom surface of the base plate 22. The driving component 10 is a stepping motor. The driving component 10 is fixedly mounted on the mounting plate 23. The chuck 9 is an electric internal support chuck 9. The chuck 9 is coaxially fixedly mounted on the output shaft of the driving component 10 through a connecting rod 25. The driving mechanism 1 includes a driving component 2 11 and a gear 1 26. The driving component 2 11 is a stepping motor. The driving component 2 11 is fixedly mounted on the frame 1. The gear 1 26 is coaxially fixedly mounted on the output shaft of the driving component 2 11. Gear teeth 1 27 meshing with the gear 1 26 are provided on both sides of the moving frame 8. Figure 5 As shown, one end of the steel tube rod 3 is sleeved outside the chuck 9 and fits against the end face of the connecting rod 25, the claws of the chuck 9 move along the radial direction of the chuck 9 in the direction away from the axis of the chuck 9, and the claws press the inner wall of the steel tube rod 3 to fix the steel tube rod 3. At this time, the axis of the steel tube rod 3 coincides with the axis around which the chuck 9 rotates, and the outer circumferential surface of the steel tube rod 3 and the outer circumferential surface of the connecting rod 25 are on the same circumferential surface, the driving component 10 is started to make the steel tube rod 3 rotate around its own axis, and the driving component 2 11 is started to make the steel tube rod 3 move toward the welding gun 2.

[0025] like Figure 6 and Figure 7As shown, the feeding module includes a material rack 28 for placing the foot nail 4, a second driving mechanism for driving the material rack 28 to approach the welding gun 2, a clamping mechanism for clamping the foot nail 4 and a third driving mechanism for driving the clamping mechanism to move. The material rack 28 is provided with a plurality of placement slots 29 for vertically placing the foot nail 4. The second driving mechanism includes a second gear 30 and a third driving assembly 12. There are multiple second gears 30, and the multiple second gears 30 are respectively rotatably assembled on both sides of the material rack 28, wherein two second gears 30 are rotatably assembled on the frame 1. The material rack 28 is provided with a gear 2 31 meshing with the gear 2 30, the driving component 3 12 is a stepping motor, the driving component 3 12 is fixedly assembled on the frame 1, one of the gears 2 30 is coaxially fixedly assembled on the output shaft of the driving component 3 12, and the driving component 3 12 is started to drive the material rack 28 to reciprocate in a direction parallel to the axis around which the chuck 9 rotates; the clamping mechanism includes a block 1 32, a block 2 33 and a driving component 4 13 that drives the block 1 32 and the block 2 33 to open and close, and the blocks 1 32 and the block 2 33 are provided with gears 21 meshing with the gear 2 30. The cavity 34 is adapted to the end of the foot nail 4 away from the welding position, the fixed end of the driving component 4 13 is fixedly assembled on the block 1 32, and the output end of the driving component 4 13 is fixedly assembled on the block 2 33. The driving component 4 13 is extended, the block 1 32 and the block 2 33 are separated, the driving component 4 13 is shortened, the block 1 32 and the block 2 33 are fitted, and the end of the foot nail 4 away from the welding position is located in the cavity 34; the driving mechanism 3 includes a driving component 5 14 that drives the clamping component to move up and down, and a driving clamping component that drives the clamping component to move horizontally and parallel to the steel pipe. The drive assembly six 15 that moves in the moving direction of the rod 3, the drive assembly seven 16 that drives the clamping assembly to move in parallel to the moving direction of the steel pipe rod 3, the output end of the drive assembly five 14 is fixed on the block one 32, the fixed end of the drive assembly five 14 is fixed on the output end of the drive assembly six 15, the fixed end of the drive assembly six 15 is fixedly assembled on the sliding block one 35, the sliding block one 35 is slidably assembled on the frame 1, the output end of the drive assembly seven 16 is fixed on the sliding block one 35, and the fixed end of the drive assembly seven 16 is fixed on the frame 1. The drive assembly four 13, the drive assembly five 14, the drive assembly six 15, and the drive assembly seven 16 are all electric push rods or hydraulic rods.

[0026] like Figure 1 and Figure 2 As shown, the support module includes a support plate 1 36, a mounting frame 1 5, and a support plate 2 37 rotatably mounted on the mounting frame 1 5. The support plate 1 36 and the support plate 2 37 are both provided with an avoidance hole 38 for inserting the steel pipe rod 3 and a guide groove 39 for placing the steel pipe rod 3 into the avoidance hole 38. The opening direction of the guide groove 39 on the support plate 1 36 is inclined upward. The support plate 1 36 and the support plate 2 37 are alternately arranged, and the gear 1 26 is rotatably mounted on the top of the support plate 1 36; as shown Figure 8As shown, the support plate 2 37 is rotatably assembled on the mounting frame 1 5 through the drive mechanism 3. The drive mechanism 3 includes a drive component 8 17 and a worm 40. The drive component 8 17 is a stepping motor. The drive component 8 17 is fixedly assembled on the mounting frame 1 5. The worm 40 is coaxially fixedly assembled on the output shaft of the drive component 8 17. The support plate 2 37 is provided with a worm gear groove 41 that engages with the worm 40. In order to prevent the support plate 2 37 and the mounting frame 1 5 from detaching, the support plate 2 37 is provided with a flange 42, and the mounting frame 1 5 is provided with a limiting groove 43 that matches the flange 42. In the process of the worm 40 driving the support plate 2 37 to rotate, the flange 42 is always engaged in the limiting groove 43. like Figure 8 and Fig. 9 As shown, a slide groove 57 is provided on the support plate 36 and the mounting frame 5 between the chuck 9 and the frame 1, and the mobile frame 8 is slidably assembled in the slide groove 57. The support plate 36 and the mounting frame 5 are detachably assembled on the mobile frame 8 through the drive component 9 18. The drive component 9 18 is a vertically placed electric push rod. The fixed ends of the drive component 9 18 are respectively vertically fixedly assembled on the support plate 36 and the mounting frame 5. The mobile frame 8 is provided with a through hole 44 for the output end of the drive component 9 18 to be inserted therein; the support plate 36 and the mounting frame 5 between the chuck 9 and the frame 1 are provided with a through hole 44; The support plate 136 and the mounting frame 15 are detachably assembled on the frame 1 through a driving mechanism 4, which includes a hook 45 slidably assembled on the support plate 136 and the mounting frame 15, and a driving component 19 for driving the hook 45 to slide. The driving component 19 is an electric push rod or a hydraulic rod. The frame 1 is provided with a slot 46 adapted to the hook 45. The mounting frame 15 and the support plate 136 are also provided with a slot 2 58 adapted to the hook 45 adjacent to and away from the frame 1. The driving component 19 drives the hook 45 to enter and exit the slot 1 46 or the slot 2 58.

[0027] Reference Figure 1 The support plate 36 and the mounting frame 5 located on the side of the frame 1 away from the chuck 9 are fixedly assembled on the frame 1 at a predetermined distance.

[0028] The frame 1 is provided with a weld strength detection module, such as Fig.10 and Fig.11As shown, the weld strength detection module includes an axial strength detection mechanism and a circumferential strength detection mechanism. The axial strength detection mechanism includes a rotating rod 47, a driving assembly 1120 and a pressure sensor 48. A mounting frame 37 is fixedly mounted on the frame 1. Both sides of the rotating rod 47 are fixedly connected to a rotating shaft 49. The rotating shaft 49 is rotatably mounted on the mounting frame 37. The axis around which the rotating shaft 49 rotates is horizontal and perpendicular to the moving direction of the steel pipe rod 3. During the movement of the steel pipe rod 3 toward the discharge support module, the welded foot nail 4 presses the rotating rod 47 close to the side of the steel pipe rod 3, thereby driving the rotating rod 47 to rotate; the driving Component 11 20 is an electric push rod or a hydraulic rod, and the driving direction is parallel to the steel pipe rod 3. The fixed end of the driving component 11 20 is fixedly assembled on the mounting frame 3 7. The pressure sensor 148 is installed on the output end face of the driving component 11 20. The pressure sensor 148 is used to detect the pressure of the other end of the rotating rod 147 on the output end face of the driving component 11 20. The pressure of the foot nail 4 on one end of the rotating rod 147 can be calculated through the lever principle, and then the weld strength can be detected. In order to ensure smooth pressure transmission, a sliding block 250 is slidably assembled between the other end of the rotating rod 147 and the output end of the driving component 11 20, refer to Figure 1 The sliding direction of the sliding block 50 is parallel to the steel pipe rod 3, one end of the sliding block 50 is in contact with the other end of the rotating rod 47, and the other end of the sliding block 50 is in vertical contact with the pressure sensor 48; in order to make the pressure sensor 48 always in contact with the sliding block 50, a torsion spring 51 is mounted on the rotating shaft 49, and the two ends of the torsion spring 51 are respectively fixed on the rotating shaft 49 and the mounting frame 3 7, and the torsion spring 51 has elastic potential energy that drives the rotating rod 47 to rotate so that the sliding block 50 moves toward the direction of the pressure sensor 48.

[0029] The circumferential strength detection mechanism includes a rotating rod 2 52, a driving assembly 12 21 and a pressure sensor 2 53. As shown in the figure, both sides of the rotating rod 2 52 are rotatably assembled on the mounting frame 3 7 through a rotating shaft 2 54. The axis of the rotating shaft 2 54 is parallel to the steel pipe rod 3. When the welded foot nail 4 rotates, the foot nail 4 pushes one end of the rotating rod 2 52 close to the steel pipe rod 3 to drive the rotating rod 2 52 to rotate. The driving direction of the driving assembly 12 21 is horizontal and perpendicular to the steel pipe rod 3. The fixed end of the driving assembly 12 21 is fixedly assembled on the mounting frame 3 7. The pressure sensor 2 53 is fixedly assembled on the mounting frame 3 7. It is fixedly assembled on the output end of the driving component twelve 21, and a sliding block three 55 is provided between the pressure sensor two 53 and the other end of the rotating rod two 52, and the sliding direction is the same as the driving direction of the driving component twelve 21. The sliding block three 55 is used to smoothly transmit the pressure of the other end of the rotating rod two 52 on the pressure sensor two 53; a torsion spring two 56 is mounted on the rotating shaft two 54, and the two ends of the torsion spring two 56 are respectively fixed on the rotating shaft two 54 and the mounting frame three 7, and the torsion spring two 56 has elastic potential energy for driving the rotating rod two 52 to rotate so that the sliding block three 55 moves toward the direction of the pressure sensor two 53.

[0030] A PLC is assembled on the frame 1, and drive component 1 10, drive component 2 11, drive component 3 12, drive component 4 13, drive component 5 14, drive component 6 15, drive component 7 16, drive component 8 17, drive component 9 18, drive component 10 19, drive component 11 20, and drive component 12 21 are electrically connected to the output end of the PLC, and pressure sensor 1 48 and pressure sensor 2 53 are electrically connected to the input end of the PLC.

[0031] The use of the present invention is: ① initial state; operating the drive assembly eight 17, so that the guide groove 39 between the chuck 9 and the frame 1 is in the same direction, away from the chuck 9 of the frame 1 side of the guide groove 39 in a different direction; ②Install the steel pipe rod 3; Figure 1 As shown, the steel pipe rod 3 to be welded is placed into the avoidance hole 38 along the guide groove 39 on the chuck 9 and the frame 1, and the driving assembly 2 11 is operated. The chuck 9 is inserted into one end of the steel pipe rod 3. When the end surface of one end of the steel pipe rod 3 is in contact with the connecting rod 25, the driving assembly 2 11 stops, and the claws of the chuck 9 synchronously operate in a direction away from the axis of the steel pipe rod 3, so that the chuck 9 is fixedly connected to the steel pipe rod 3, and then the driving assembly 2 11 is operated in the reverse direction, so that one end of the steel pipe rod 3 is in the starting position; ③Welding process; Run the drive assembly 2 11 to make the chuck 9 approach the frame 1, run the drive assembly 3 12 to make one of the foot nails 4 located between the block 1 32 and the block 2 33, shorten the drive assembly 4 13, make the block 1 32 and the block 2 33 approach, and one of the foot nails 4 is engaged and fixed in the cavity 34, run the drive assembly 5 14, the drive assembly 6 15, and the drive assembly 7 16 to move the foot nail 4 out of the placement slot 29 and fit it on the steel pipe rod 3, the drive assembly 2 11 and the drive assembly 7 16 are synchronously operated to make the contact point between the foot nail 4 and the steel pipe rod 3 move toward the welding gun 2, and the welding nozzle of the welding gun 2 fixes and welds the foot nail 4 to the steel pipe rod 3; then the drive assembly 1 10 is operated, and the steel pipe rod 3 rotates 180 degrees around itself, and the drive assembly 2 11 continues to drive the steel pipe rod 3 to move toward the discharge support module, and the feeding module fits another foot nail 4 with another welding point of the steel pipe rod 3, and so on, and all the foot nails 4 are welded to the steel pipe rod 3 in sequence; During the movement of the chuck 9 toward the frame 1, when the support plate 1 36 or the support plate 2 37 runs to fit with the frame 1 and the support plate 1 36 and the support plate 2 37 fit with each other, the drive assembly 9 18 corresponding to the support plate 1 36 or the support plate 2 37 in a fitting relationship is shortened, and the output end of the drive assembly 9 18 moves out of the through-hole 44, so that the chuck 9 can continue to move toward the frame 1 until the frame 1, the support plate 1 36 and the support plate 2 37 fit with each other in sequence. At this time, the drive assembly 19 is shortened, and the hook 45 enters the slot 1 46 and the slot 2 58, and the mutually fitted frame 1, support plate 1 36, and mounting frame 1 5 are relatively fixedly connected, as shown in FIG. Figure 2 As shown, at this time, the end of the connecting rod 25 away from the driving assembly 10 extends out of the frame 1; The other end of the steel pipe rod 3 is inserted into the avoidance hole 38 on the side of the frame 1 away from the chuck 9. When the foot nail 4 needs to pass through the guide groove 39 on a certain support plate 2 37, the corresponding drive assembly 8 17 is operated to make the guide groove 39 on a certain support plate 2 37 fit with the foot nail 4. After the foot nail 4 passes through the guide groove 39, the drive assembly 8 17 is started in the reverse direction to make the guide groove 39 return to the state in step ①. When the welded foot nail 4 moves toward the direction of the discharge support module, the end of the foot nail 4 away from the steel pipe rod 3 presses one end of the rotating rod 47 to rotate the rotating rod 47, and the pressure value measured by the pressure sensor 48 reaches a predetermined value and is maintained for a predetermined time. If the weld is intact, the drive component 11 20 is shortened, and the top end of the rotating rod 47 rotates away from the steel pipe rod 3 to the bottom of the foot nail 4, so that the foot nail 4 continues to move; in the process of the foot nail 4 rotating to the corresponding guide groove 39 to be passed through, the end of the foot nail 4 away from the steel pipe rod 3 presses one end of the rotating rod 2 52 to rotate the rotating rod 2 52, and the pressure value measured by the pressure sensor 2 53 reaches a predetermined value and is maintained for a predetermined time. If the weld is intact, the drive component 12 21 is shortened, and the top end of the rotating rod 2 52 rotates away from the steel pipe rod 3 to the bottom of the foot nail 4, so that the foot nail 4 continues to rotate; ④ Remove the finished welded product and restore it to its original state; start the drive assembly 8 17 on the side of the frame 1 away from the chuck 9, so that the guide groove 39 is in the same direction; the claws on the chuck 9 move synchronously in the direction close to the axis of the chuck 9, and the drive assembly 2 11 operates to separate the chuck 9 from the steel pipe rod 3, and take out the welded steel pipe rod 3 along the guide groove 39; The driving component 2 11 continues to run, and the chuck 9 moves away from the frame 1. When the driving component 9 18 on the mounting frame 1 5 or the support plate 1 36 corresponds to the corresponding insertion hole 44, the corresponding driving component 9 18 is shortened, and the output end of the driving component 9 18 enters the corresponding insertion hole 44. At the same time, the driving component 10 19 on the mounting frame 1 5 or the support plate 1 36 is extended, and the hook 45 is moved out of the card slot 2 58 and the card slot 1 46 in turn until all the mounting frames 5 and the support plates 36 return to the position in step ①.

[0032] It should be noted that in step ③, if the weld is broken or cracked, the welding gun 2 and the feeding module stop running, the driving assembly 11 20 and the driving assembly 12 21 are shortened, so that the rotating rod 1 47 and the rotating rod 2 52 do not affect the translation and rotation of the foot nail 4; refer to the operation mode of the support plate 1 36, the mounting frame 1 5 and the support plate 2 37 in step ③, and transport the steel pipe rod 3 to Figure 2 Refer to step ④ to remove the steel pipe rod 3.

Claims

1. A welding tool for steel pipe rod ladder group, characterized in that: It includes a frame, a welding gun arranged on the frame, a driving module for driving the steel pipe rod to move so that the welding part of the steel pipe rod is transported to the welding nozzle of the welding gun, and a supporting module for supporting the steel pipe rod; The driving module includes a chuck, a driving assembly for driving the chuck to rotate around its own axis, and a driving mechanism for driving the chuck to move toward the welding gun. The chuck is used to fix and clamp one end of the steel pipe rod; The support module includes a support plate 1 and a support plate 2 which are alternately arranged along the extension direction of the chuck axis. The support plate 1 and the support plate 2 are provided with avoidance holes for inserting the steel pipe rod and guide grooves for placing the steel pipe rod into the avoidance holes. The support plate 2 is rotated around the chuck axis and assembled on the mounting frame 1. The support plate 2 rotates so that two adjacent guide grooves form a predetermined angle in the vertical direction to correct the steel pipe rod inserted into the avoidance hole so that the axis of the steel pipe rod coincides with the axis of the chuck; the support plate 1 and the mounting frame 1 located between the frame and the chuck are slidably assembled on the frame to shorten the distance between the support plate 1, the mounting frame 1 and the frame, so that the chuck moves toward the welding gun; the support plate 1 and the mounting frame 1 located on the side of the frame away from the chuck are arranged on the frame at a predetermined distance so that the welded foot nails pass through the guide grooves along the extension direction of the chuck axis.

2. A steel pipe rod ladder assembly welding tool as claimed in claim 1, characterized in that: The opening direction of the guide groove located on the first supporting plate is inclined upward.

3. A steel pipe rod ladder assembly welding tool as claimed in claim 2, characterized in that: The frame is provided with a weld axial strength detection mechanism, which includes a rotating rod 1, a driving component 11 and a pressure sensor 1. The rotating rod 1 is rotatably assembled on the frame. When the foot nail moves toward the direction of the discharge support mechanism, it is used to press one end of the rotating rod 1 to generate pressure to drive the rotating rod 1 to rotate. The fixed end of the driving component 11 is fixedly assembled on the frame. The pressure sensor 1 is located between the output end of the driving component 11 and the other end of the rotating rod 1. The pressure of the foot nail on one end of the rotating rod 1 corresponds to the pressure of the other end of the rotating rod 1 on the pressure sensor 1. When the pressure value measured by the pressure sensor 1 is a predetermined value, the output end of the driving component 11 moves toward the direction close to the frame, and the one end of the rotating rod 1 rotates in the direction away from the steel pipe rod, so that the foot nail continues to move toward the direction of the discharge support module.

4. A steel pipe rod ladder assembly welding tool as claimed in claim 3, characterized in that: The rotating rod 1 is rotatably assembled on the frame through the rotating shaft 1, and an elastic component is arranged between the rotating shaft 1 and the frame. The elastic component has elastic potential energy for driving the other end of the rotating rod 1 to move toward the direction of the pressure sensor 1.

5. A steel pipe rod ladder assembly welding tool as claimed in claim 4, characterized in that: A weld circumferential strength detection mechanism is provided on the frame, and the weld circumferential strength detection mechanism includes a rotating rod 2, a driving component 12 and a pressure sensor 2. The rotating rod 2 is rotatably assembled on the frame. When the foot nail rotates, it is used to press one end of the rotating rod 2 to generate pressure to drive the rotating rod 2 to rotate. The fixed end of the driving component 12 is fixedly assembled on the frame. The pressure sensor 2 is located between the output end of the driving component 12 and the other end of the rotating rod 2. The pressure of the foot nail on one end of the rotating rod 2 corresponds to the pressure of the other end of the rotating rod 2 on the pressure sensor 2. When the pressure value measured by the pressure sensor 2 is a predetermined value, the output end of the driving component 12 moves in a direction close to the steel pipe rod, and one end of the rotating rod 2 rotates in a direction away from the steel pipe rod, so that the foot nail continues to rotate.

6. A steel pipe rod ladder assembly welding tool as claimed in claim 5, characterized in that: A feeding module is provided on the frame, and the feeding module includes a material holding rack for placing foot nails, a driving mechanism 2 for driving the material holding rack close to the welding gun, a clamping mechanism for clamping the foot nails and a driving mechanism 3 for driving the clamping mechanism to move. The material holding rack is provided with a plurality of placement slots for placing the foot nails, and the clamping mechanism includes a movably connected block 1 and a block 2, and blocks 1 and 2 are provided with cavities adapted to the foot nails, and block 1 and block 2 are used to fix and clamp the foot nail when they are in contact with each other; the driving mechanism 3 includes a plurality of driving components, and the plurality of driving components are used to move the foot nail to a position where it is in contact with the outer circumference of the steel pipe rod and drive the contacting position between the foot nail and the steel pipe rod and the welding gun.

7. A steel pipe rod ladder assembly welding tool according to any one of claims 1 to 6, characterized in that: The chuck is fixedly assembled on the mobile frame, the mobile frame is slidably assembled on the frame along the chuck axis direction, the support plate 1 and the mounting frame 1 are detachably assembled on the frame, and the support plate 1 and the mounting frame 1 are detachably assembled on the mobile frame.

8. The steel pipe rod ladder assembly welding tool according to claim 7 is characterized in that: The fixed ends of the drive components nine and ten are fixedly assembled on the support plate one and the mounting frame one, and the mobile frame three is provided with a through-hole for the output end of the drive component nine to be installed therein. When the output end of the drive component nine is located in the through-hole, the support plate one, the mounting frame one and the mobile frame are fixedly connected; the output end of the drive component ten is fixedly assembled with a hook, and the frame is provided with a slot one adapted to the hook, and the mounting frame one and the support plate one are provided with a slot two adapted to the hook adjacent to and away from the frame. When the drive hook of the drive component ten is engaged in the slot one and the slot two, the support plate one and / or the mounting frame one are fixedly connected to the frame.

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