Precise aligning and welding all-in-one machine for hot-dip galvanized steel

Abstract

The invention relates to the technical field of steel welding, in particular to a hot galvanizing type steel accurate aligning and welding all-in-one machine which comprises two conveying tables arranged in a mirror image mode and two conveying chains located in the conveying tables. A plurality of step-by-step clamping assemblies for clamping and butting the hot-dip galvanized steel are installed between the conveying chains at equal intervals, and a correction type welding assembly for welding, aligning and correcting the hot-dip galvanized steel is arranged between the two sets of conveying tables; the conveying table is combined with the step-by-step clamping assembly, conveying type automatic feeding and discharging treatment is carried out on the hot-dip galvanized steel pipes, the material conveying and machining convenience is improved, meanwhile, multi-point wrapping type reinforced clamping and conveying treatment is carried out, anti-inclination type center butt joint treatment is carried out on the two sets of hot-dip galvanized steel pipes at the welding position, and the welding position is assisted to be accurate; in addition, in cooperation with a correction type welding assembly, self-inspection and correction of bending and inclination of the end are carried out before welding, and the high-quality precise alignment welding effect is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of steel welding, and in particular to a hot-dip galvanized steel precision alignment welding all-in-one machine. Background Art

[0002] Hot-dip galvanized steel pipes, due to their excellent corrosion resistance and mechanical strength, are widely used in numerous industrial fields, including construction, machinery manufacturing, coal mining, chemical engineering, railway vehicle production, the automotive industry, highway and bridge construction, container manufacturing, sports facility construction, agricultural machinery, oil drilling and production equipment, and prospecting machinery. During the production and processing of hot-dip galvanized steel pipes, to meet the length requirements of different application scenarios, it is often necessary to weld two or more steel pipes together to obtain the required length for use.

[0003] For example, in the prior art, there is a hot-dip galvanized steel welding and processing equipment with publication number CN115533441A. This equipment uses two sets of turntables and multiple chucks distributed in a ring shape on the rotating disk to achieve multi-station fixing processing of hot-dip galvanized steel pipes, allowing the steel pipes to be disassembled and assembled while welding is in progress. Although it can achieve high-efficiency welding processing effects, it adopts a method of fixing one end of the steel pipe. For longer steel pipes, it is difficult to ensure that the fixed end and the welding end of the steel pipe are in a straight and horizontal state due to the influence of the gravity of the steel pipe itself at the fixed point far away from the welding end. As a result, it is difficult to achieve precise alignment when the two sets of steel pipe welding ends are connected, which affects the welding quality. In addition, there is a lack of a structure for self-inspection and correction of the inclination of the steel pipe end itself, which cannot effectively solve the welding quality problem caused by the inclination of the steel pipe end itself, and it is difficult to meet the standards of high-quality welding processing.

[0004] In view of the above technical defects, a solution is now proposed. Summary of the Invention

[0005] The purpose of the present invention is to provide a hot-dip galvanized steel precise alignment welding machine to solve the above-mentioned technical defects.

[0006] The objectives of the present invention can be achieved through the following technical solutions: a hot-dip galvanized steel precision alignment welding machine, comprising two sets of conveyor tables arranged in a mirror image, and two sets of conveyor chains arranged inside the conveyor tables, a plurality of step-by-step clamping assemblies for clamping and docking are installed equidistantly between the conveyor chains, and a corrective welding assembly for welding and alignment correction is provided between the two sets of conveyor tables; The step-by-step clamping assembly includes a docking table, a conveyor plate slidably connected to the docking table and installed between the conveyor chains, and the correction welding assembly includes a U-shaped mounting shell fixed between the two groups of conveyor tables, a C-shaped rotating drum is rotatably connected to the interior of the mounting shell, and a welding robot is installed on the inner wall of the rotating drum.

[0007] Preferably, both ends of the conveying platform are rotatably connected to a rotating rod, and the rotating rod is fixedly connected to a conveying sprocket connected to the conveying chain transmission, the interior of the conveying platform is fixedly connected to an auxiliary seat, and the conveying plate is rollingly embedded with multiple balls that are in rolling contact with the conveying platform and the auxiliary seat.

[0008] Preferably, a V-shaped groove is provided on one side of the top of the auxiliary seat, and a limiting conveying groove connected to both ends of the V-shaped groove is provided on the auxiliary seat, and a guide column slidably connected to the limiting conveying groove is fixed to the bottom of the docking station.

[0009] Preferably, mounting seats are fixed on both sides of the top of the docking station, and two sets of trapezoidal sliders are slidably connected in the mounting seats, clamping springs are installed between the trapezoidal sliders and the mounting seats, and a clamping plate is fixedly installed on the top of the trapezoidal sliders.

[0010] Preferably, a trapezoidal block is slidably connected between the inclined surfaces of the two groups of trapezoidal sliders, and a push block slidably connected to the mounting seat is fixedly connected to one side of the trapezoidal block. A guide seat matching the corresponding push block is fixedly connected to each corner of the top of the conveying platform, and a guide inclined surface is provided on one side of the guide seat.

[0011] Preferably, a flexible octopus claw is fixedly mounted on the top of the clamping plate, and the wavy side of the flexible octopus claw is located on a side of the clamping plate close to the clamping spring.

[0012] Preferably, a cavity is provided inside the docking station, and a piston block is sealingly and slidably connected inside the cavity. An ear plate is fixedly connected to the side of the top of the conveying plate away from the mounting shell. A support rod sealingly and slidably connected to the docking station is fixedly connected between the ear plate and the piston block. A high-pressure hose is connected between the cavity and the flexible octopus claw.

[0013] Preferably, two groups of auxiliary guide plates are symmetrically fixed to the arc-shaped outer wall of the mounting shell away from the opening, and the free sides of the two groups of auxiliary guide plates are arranged to be relatively close and inclined.

[0014] Preferably, a gear ring is fixedly connected to the inner wall of the rotating drum, two sets of rotating shafts are rotatably connected to the mounting shell, and a transmission sprocket and a gear meshing with the gear ring are fixed to the rotating shaft, the transmission sprockets are connected by a transmission chain, and a driving motor for driving the corresponding rotating shaft to rotate is installed on the mounting shell by bolts.

[0015] Preferably, a plurality of annularly distributed electric push rods are fixedly installed on the annular inner wall of the mounting shell and on both sides of the rotating drum, and correction blocks are installed at the push rod ends of the electric push rods. Infrared ranging sensors are provided on the inner wall of the rotating drum and on both sides of the welding robot, and a control panel is installed on a group of the conveying platforms.

[0016] The beneficial effects of the present invention are as follows: (1) The present invention uses the conveying sprocket and the conveying chain on the conveying platform to drive multiple conveying plates to move, and in combination with the guide seat, the hot-dip galvanized steel pipe is conveyed in a multi-point supported manner, to achieve automatic elastic clamping and automatic loading and unloading processing after welding, and with the help of elastic clamping and auxiliary guide plates, the distance between the welding end of the hot-dip galvanized steel pipe and the conveying platform is automatically adjusted, laying the foundation for the subsequent centering docking of the welding end; in addition, through the guidance of the guide column by the limiting conveying groove and the V-shaped groove, the hot-dip galvanized steel pipes on the two groups of conveying platforms corresponding to each other move synchronously relative to each other, realizing automatic docking processing, and cooperating with the circumferentially rotating welding robot to achieve the effect of conveying type welding station processing; (2) The present invention utilizes the docking movement of the docking platform to push the piston block to move in the cavity and push the internal liquid into the multiple flexible octopus claws, causing the flexible octopus claws on both sides of the hot-dip galvanized steel pipe to bend relative to each other, and further performs circumferential wrapping clamping on both sides and the top of the hot-dip galvanized steel pipe, achieving a multi-point wrapping strengthened clamping and fixing treatment, eliminating the problem of unstable elastic clamping of the clamping plate affecting the welding quality during the butt welding process; (3) Before welding, the present invention first uses two sets of mounting seats on the docking table to provide multi-point support for the hot-dip galvanized steel pipe, combined with the multi-point wrapping clamping of the corresponding clamping plates and the flexible octopus claws, to achieve parallel transportation of multiple hot-dip galvanized steel pipes, thereby effectively avoiding the problem of welding quality caused by tilted transportation; Then, the rotation of the drum drives the infrared ranging sensor to rotate circumferentially, so as to realize the data collection of the distance between the infrared ranging sensor and the circumferential side wall of the corresponding hot-dip galvanized steel pipe welding end, and compare the distance data of the circumferential side walls of the two groups of hot-dip galvanized steel pipes through the controller in the control panel, so as to realize the self-inspection of whether the welding end of the steel pipe is bent and tilted, and combine with multiple electric push rods to drive the movement of the correction block to realize the tilt correction processing, thereby achieving high-quality and precise alignment welding effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below with reference to the accompanying drawings; Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a schematic diagram of the cooperation between the step-by-step clamping assembly and the conveying platform of the present invention; Figure 3 It is a structural schematic diagram of the conveyor platform of the present invention; Figure 4 It is a structural schematic diagram of the step-by-step clamping assembly of the present invention; Figure 5 This is a schematic diagram of the structure of the conveyor plate of the present invention Figure 1 ; Figure 6 This is a schematic diagram of the structure of the conveyor plate of the present invention Figure 2; Figure 7 Schematic diagram of the installation of the clamping plate of the present invention; Figure 8 It is a structural schematic diagram of the butt joint plate of the present invention; Figure 9 It is a structural schematic diagram of the correction type welding assembly of the present invention; Figure 10 This is a schematic diagram of the structure of the mounting shell of the present invention Figure 1 ; Figure 11 This is a schematic diagram of the structure of the mounting shell of the present invention Figure 2 ; Figure 12 This is a schematic diagram of the distance measurement of each measuring point on a hot-dip galvanized steel pipe according to the present invention; Figure 13 It is a schematic diagram of simultaneous distance measurement of the measurement points of two groups of butt-jointed hot-dip galvanized steel pipes according to the present invention.

[0018] Legend: 1. Conveyor platform; 11. Auxiliary seat; 12. V-shaped groove; 13. Position-limiting conveyor trough; 14. Guide seat; 15. Control panel; 2. Step-by-step clamping assembly; 21. Conveyor plate; 22. Docking station; 23. Clamping plate; 24. Guide column; 25. Mounting seat; 26. Trapezoidal slider; 27. Clamping spring; 28. Trapezoidal block; 29. Pushing block; 210. Flexible octopus claw; 211. Cavity; 212. Piston block; 213. Support rod; 214. High-pressure hose; 3. Correction welding assembly; 31. Mounting shell; 32. Rotating drum; 33. Welding robot; 34. Auxiliary guide plate; 35. Gear ring; 36. Gear; 37. Electric push rod; 38. Correction block. DETAILED DESCRIPTION

[0019] The following will provide a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0020] Example 1: Please refer to Figures 1-4 、 Figure 6 、 Figure 7 and Figures 9-13 As shown, the problem that it is difficult to perform anti-tilt butt treatment on hot-dip galvanized steel pipes in the prior art and prevent the end portions from tilting, which results in poor welding quality, can be solved by the following solutions: In this embodiment, a hot-dip galvanized steel precision alignment and welding integrated machine includes two sets of conveyor platforms 1 arranged in a mirror image, and two sets of conveyor chains arranged inside the conveyor platforms 1. A plurality of step-by-step clamping assemblies 2 for clamping and docking the hot-dip galvanized steel are installed equidistantly between the conveyor chains. A corrective welding assembly 3 for docking the hot-dip galvanized steel for welding and alignment correction is provided between the two sets of conveyor platforms 1. The step-by-step clamping assembly 2 includes a docking platform 22, a conveying plate 21 slidably connected to the docking platform 22 and mounted between conveying chains, and two sets of clamping plates 23 are provided on both sides of the top of the docking platform 22. The multiple sets of clamping plates 23 that move relative to each other are used to clamp the hot-dip galvanized steel pipes at multiple points, and the horizontal movement of the conveying plate 21 enables parallel conveyance of multiple hot-dip galvanized steel pipes, thereby effectively avoiding problems with welding quality caused by tilted conveyance. The correction welding assembly 3 includes a U-shaped mounting shell 31 fixed between the two sets of conveyor platforms 1. The open mounting shell 31 is used for outputting the two sets of hot-dip galvanized steel pipes after welding. The interior of the mounting shell 31 is rotatably connected to a C-shaped rotating drum 32, and a welding robot 33 is installed on the inner wall of the rotating drum 32. The hot-dip galvanized steel pipes on the two sets of conveyor platforms 1 move relative to each other for docking processing, and cooperate with the circumferentially rotating welding robot 33 to achieve the effect of conveyor-type welding station processing.

[0021] Both ends of the conveyor platform 1 are rotatably connected to a rotating rod, and a conveyor sprocket connected to the conveyor chain is fixed on the rotating rod. One of the rotating rods on the two sets of conveyor platforms 1 is driven by an external servo motor, and the rotation speeds of the two are equal. The rotating rod, combined with the conveyor sprocket and the conveyor chain, drives the multiple conveyor plates 21 to move. The conveyor plates 21 on the two sets of conveyor platforms 1 move at the same speed in a one-to-one correspondence. An auxiliary seat 11 is fixedly connected to the interior of the conveyor platform 1, and a plurality of balls are embedded in the conveyor plate 21 in a rolling manner and in contact with the conveyor platform 1 and the auxiliary seat 11. The auxiliary seat 11 and the balls on the conveyor plate 21 are used to achieve an anti-deflection and smooth movement effect of the conveyor plate 21 during its movement above the conveyor platform 1.

[0022] A V-shaped groove 12 is provided on one side of the top of the auxiliary seat 11, and a limiting conveying groove 13 connected to both ends of the V-shaped groove 12 is provided on the auxiliary seat 11. A guide column 24 is fixedly connected to the bottom of the docking platform 22 and is slidably connected to the limiting conveying groove 13. During the movement of the conveying plate 21, the guide column 24 slides in the limiting conveying groove 13 to limit the relative sliding between the docking platform 22 and the conveying plate 21. When the guide column 24 enters the V-shaped groove 12, under the guidance of the V-shaped groove 12, it pushes the corresponding docking platforms 22 on both sides of the mounting shell 31 to carry the hot-dip galvanized steel pipes for synchronous relative movement, thereby completing the docking of the ends of the hot-dip galvanized steel pipes on both sides.

[0023] Mounting seats 25 are fixedly connected to both sides of the top of the docking platform 22. Two groups of mounting seats 25 are used to provide multi-point support for the hot-dip galvanized steel pipe to avoid bending due to its own gravity. Two groups of trapezoidal sliders 26 are slidably connected in the mounting seats 25. Clamping springs 27 are installed between the trapezoidal sliders 26 and the mounting seats 25. Clamping plates 23 are fixedly installed on the top of the trapezoidal sliders 26. The hot-dip galvanized steel pipe is placed between the clamping plates 23 on the top of the mounting seats 25. Under the compression elastic force of the clamping springs 27, the trapezoidal sliders 26 are pushed to move relative to each other, and the hot-dip galvanized steel pipe is elastically clamped in the center by the clamping plates 23.

[0024] A trapezoidal block 28 is slidably connected between the inclined surfaces of the two sets of trapezoidal sliders 26, and a push block 29 slidably connected to the mounting seat 25 is fixedly connected to one side of the trapezoidal block 28. The push block 29 is driven to move and drive the trapezoidal block 28 to move between the two sets of trapezoidal sliders 26, thereby causing the two sets of trapezoidal sliders 26 to carry the clamping plates 23 away from each other and compress the corresponding clamping springs 27, so as to facilitate the placement of the hot-dip galvanized steel pipe between the clamping plates 23 on the top of the mounting seat 25, and the automatic drop processing during the process of the conveying plate 21 moving to the bottom of the conveying platform 1, thereby achieving the automatic unloading effect; A guide seat 14 is fixedly connected to each corner of the top of the conveyor platform 1, and the guide seat 14 is provided with a guide slope on one side. When the conveyor plate 21 moves from the side of the conveyor platform 1 away from the mounting shell 31, from below the auxiliary seat 11 to above it, the two sets of push blocks 29 on the docking platform 22 enter between the corresponding guide seats 14 on both sides, and in conjunction with the guide slopes on the guide seats 14, the two sets of push blocks 29 are prompted to move relative to each other. The pushing block 29 drives the trapezoidal block 28 to move between the two sets of trapezoidal sliders 26. The pushing block 29 on the docking platform 22 contacts the guide seat 14 on the side of the conveying platform 1 close to the mounting shell 31, causing the clamping plate 23 to separate from the hot-dip galvanized steel pipe. Combined with the conveying plate 21, the docking platform 22 is driven to move to the bottom of the auxiliary seat 11 to automatically unload the welded hot-dip galvanized steel pipe.

[0025] Two groups of auxiliary guide plates 34 are symmetrically fixed on the arc-shaped outer wall of the mounting shell 31 away from the opening side, and the free sides of the two groups of auxiliary guide plates 34 are arranged to be relatively close and inclined. The hot-dip galvanized steel pipe is placed between the clamping plates 23 on the top of the mounting seat 25. The conveying plate 21 drives the hot-dip galvanized steel pipe to be horizontally loaded and conveyed under the drive of the conveying chain. Through the cooperation of the auxiliary guide plates 34 on the mounting shell 31, the two groups of corresponding hot-dip galvanized steel pipes are prompted to move away from each other first, and the opposite ends of the two groups of hot-dip galvanized steel pipes slide against the guide plates and the outer wall of the mounting shell 31, thereby realizing automatic adjustment of the distance between the welding end of the hot-dip galvanized steel pipe and the conveying platform 1, laying the foundation for the subsequent centered docking of the welding end.

[0026] A gear ring 35 is fixedly connected to the inner wall of the rotating drum 32, and two sets of rotating shafts are rotatably connected to the mounting shell 31. A transmission sprocket and a gear 36 meshing with the gear ring 35 are fixed to the rotating shaft. The transmission sprockets are connected by a transmission chain. A driving motor that drives the corresponding rotating shaft to rotate is installed on the mounting shell 31 by bolts. After the welded ends of the two sets of hot-dip galvanized steel pipes are butted and contacted, the driving motor drives the corresponding rotating shaft to rotate, and the two sets of gears 36 are driven to rotate in combination with the transmission sprocket and the transmission chain, and the rotating drum 32 is driven to rotate circumferentially through the meshing gear 36 and the gear ring 35.

[0027] A plurality of annularly distributed electric push rods 37 are fixedly mounted on the annular inner wall of the mounting shell 31 and on both sides of the rotating drum 32, and correction blocks 38 are installed at the push rod ends of the electric push rods 37. Infrared ranging sensors are installed on the inner wall of the rotating drum 32 and on both sides of the welding robot 33. A control panel 15 is installed on a set of conveyor platforms 1; The driving motor drives the drum 32 to rotate one circle through the meshing gear 36 and the gear ring 35, and two sets of infrared ranging sensors respectively collect data on the distance between the drum 32 and the circumferential side wall of the corresponding hot-dip galvanized steel pipe end; For example, two sets of infrared distance measuring sensors are used to collect data on the distances between them and the corresponding measuring points a, b, c, and d on the circumference of the end of the hot-dip galvanized steel pipe, respectively, to obtain spacing data, which are a1, a2, b1, b2, c1, c2, d1, and d2. The spacing data are transmitted to the controller in the control panel 15 for comparison. When a1=a2, b1=b2, c1=c2, and d1=d2, a reversal reset signal and a welding signal are generated. The reverse reset signal controls the driving motor to drive the rotating drum 32 carrying the welding robot 33 to rotate in the opposite direction for one circle. During the rotation of the welding robot 33, the welding signal controls the welding robot 33 to perform circumferential welding on the welding end of the hot-dip galvanized steel pipe. When a1≠a2, c1≠c2 or b1≠b2, d1≠d2 occurs, the controller generates an end correction alignment signal, controls the electric push rod 37 corresponding to the orientation of the measuring points a, b, c, and d to push the correction block 38 to move, and performs clamping straightening on the welded inclined end of the hot-dip galvanized steel pipe. After correction, the controller generates a reversal reset signal and a welding signal to perform normal high-precision welding processing.

[0028] Example 2: Please refer to Figure 5 、 Figure 7 and Figure 8 As shown in the figure, during the butt welding process, the problem that only the elastic clamping of the clamping plate on the hot-dip galvanized steel pipe causes unstable clamping and easily affects the welding quality can be solved by the following solutions: In this embodiment, a flexible octopus claw 210 is fixedly installed on the top of the clamping plate 23, and the wavy side of the flexible octopus claw 210 is located on the side of the clamping plate 23 close to the clamping spring 27. The two groups of flexible octopus claws 210 on the mounting seat 25 are staggered, so that when the flexible octopus claws 210 on both sides of the hot-dip galvanized steel pipe are relatively bent, the ends of the two are prevented from conflicting with each other, thereby preventing interference. The circumferential wrapping clamping of the two sides and the top of the hot-dip galvanized steel pipe is further achieved, and the auxiliary clamping plate 23 is subjected to multi-point enhanced clamping and fixing treatment, thereby eliminating the instability of the elastic clamping of the clamping plate 23.

[0029] The docking station 22 has a cavity 211 formed inside. Liquid is injected into the cavity 211, which has a lower compression ratio than air. This allows the flexible octopus claw 210 to have a stronger wrapping force when it bends, thereby improving the fixing effect on the hot-dip galvanized steel pipe. The side walls of the flexible octopus claw 210 are thickened to avoid breakage. The interior of the cavity 211 is sealed and slidably connected to a piston block 212. A lug plate is fixedly connected to the top of the conveying plate 21 on the side away from the mounting shell 31. A support rod 213, which is sealed and slidably connected to the docking station 22, is fixedly connected between the lug plate and the piston block 212. A high-pressure hose 214 is connected between the cavity 211 and the flexible octopus claw 210. The docking platform 22 slides on the top of the conveying plate 21, and in combination with the support rod 213, the piston block 212 slides inside the cavity 211, injecting the liquid in the cavity 211 into the flexible octopus claw 210 on the top of the clamping plate 23 through the high-pressure hose 214, causing the flexible octopus claws 210 on both sides of the hot-dip galvanized steel pipe to bend relative to each other. After the two sets of hot-dip galvanized steel pipe ends are precisely aligned and welded, the external servo motor is controlled to rotate again, prompting the conveying plate 21 to drive the welded hot-dip galvanized steel pipes to move horizontally out of the mounting shell 31, and under the guidance of the guide pillars 24 of the V-shaped groove 12, the corresponding docking platform 22 is driven to reset. The piston block 212 is relatively reset and moved in the cavity 211, sucking the liquid in the flexible octopus claw 210 back into the cavity 211.

[0030] Example 3: Please refer to Figures 1-13 As shown, the present invention also provides a method for using a hot-dip galvanized steel precision alignment welding machine, comprising the following steps: Step 1: One of the rotating rods on the two sets of conveyor platforms 1 is driven by an external servo motor, and the rotation speeds of the two are equal. The rotating rod, in conjunction with the conveyor sprocket and conveyor chain, drives the multiple conveyor plates 21 to move. The conveyor plates 21 on the two sets of conveyor platforms 1 move at the same speed in a one-to-one correspondence. Step 2: When the conveying plate 21 moves from the side of the conveying platform 1 away from the mounting shell 31 from below the auxiliary seat 11 to above it, the two sets of pushing blocks 29 on the docking platform 22 enter between the corresponding guide seats 14 on both sides, and in combination with the guiding inclined surfaces on the guide seats 14, the two sets of pushing blocks 29 are prompted to move relative to each other. The pushing blocks 29 drive the trapezoidal blocks 28 to move between the two sets of trapezoidal sliders 26, thereby causing the two sets of trapezoidal sliders 26 to carry the clamping plates 23 away from each other and compress the corresponding clamping springs 27, placing the hot-dip galvanized steel pipe between the clamping plates 23 on the top of the mounting seat 25, and driving the hot-dip galvanized steel pipe to be horizontally loaded and conveyed; Step 3: After the push block 29 separates from the corresponding guide seat 14, the compressed elastic force of the clamping spring 27 pushes the trapezoidal slider 26 to move relative to each other, and the hot-dip galvanized steel pipe is elastically clamped in the center by the clamping plate 23. The two sets of push blocks 29 reset and move away from each other. As the conveying plate 21 continues to move above the auxiliary seat 11, the guide column 24 slides in the limited conveying groove 13 to limit the relative sliding between the docking platform 22 and the conveying plate 21. The auxiliary guide plate 34 on the mounting shell 31 cooperates to cause the two corresponding groups of hot-dip galvanized steel pipes to move away from each other first, and the opposite ends of the two groups of hot-dip galvanized steel pipes slide against the guide plate and the outer wall of the mounting shell 31 until the guide column 24 enters the V-shaped groove 12. Under the guidance of the V-shaped groove 12, the corresponding docking platforms 22 on both sides of the mounting shell 31 are pushed to carry the hot-dip galvanized steel pipes for synchronous relative movement, completing the centered docking of the ends of the hot-dip galvanized steel pipes on both sides, and stopping the external servo motor from rotating. Step 4: The docking platform 22 slides on the top of the conveying plate 21, and the support rod 213 causes the piston block 212 to slide inside the cavity 211. The liquid in the cavity 211 is injected into the flexible octopus claw 210 on the top of the clamping plate 23 through the high-pressure hose 214, causing the flexible octopus claws 210 on both sides of the hot-dip galvanized steel pipe to bend relative to each other, further performing circumferential wrapping clamping on both sides and the top of the hot-dip galvanized steel pipe, achieving a multi-point enhanced clamping and fixing process, and eliminating the instability of the elastic clamping of the clamping plate 23; Step 5: After the welded ends of the two sets of hot-dip galvanized steel pipes are butted against each other, the driving motor drives the corresponding rotating shaft to rotate, and the transmission sprocket and transmission chain drive the two sets of gears 36 to rotate, and the meshing gears 36 and the gear ring 35 drive the rotating drum 32 to rotate one circle circumferentially. The two sets of infrared ranging sensors respectively collect data on the distance between them and the circumferential side walls of the corresponding hot-dip galvanized steel pipe ends; The spacing data is transmitted to the controller in the control panel 15 for comparison. When the spacing data of the two sets of infrared ranging sensors are equal, a reversal reset signal and a welding signal are generated. The reversal reset signal controls the driving motor to drive the rotating drum 32 carrying the welding robot 33 to rotate in the opposite direction for one circle. During the rotation of the welding robot 33, the welding signal controls the welding robot 33 to perform circumferential welding on the welding end of the hot-dip galvanized steel pipe. Step 6: When the distance data between the two sets of infrared ranging sensors are not equal, the controller generates an end correction alignment signal, controls the multiple electric push rods 37 to push the correction block 38 to move, and clamps the welded inclined end of the hot-dip galvanized steel pipe to straighten it. After the correction, the controller generates a reversal reset signal and a welding signal. Step 7: After the rotating drum 32 rotates one circle and the ends of the two sets of hot-dip galvanized steel pipes are precisely aligned and welded, the external servo motor is controlled to rotate again, prompting the conveying plate 21 to drive the welded hot-dip galvanized steel pipes to move horizontally out of the mounting shell 31. Under the guidance of the guide pillars 24 of the V-shaped groove 12, the corresponding docking platform 22 is driven to reset. The piston block 212 is relatively reset in the cavity 211, sucking the liquid in the flexible octopus claw 210 back into the cavity 211; The flexible octopus claw 210 expands and separates from the hot-dip galvanized steel pipe, and the clamping plate 23 elastically clamps the hot-dip galvanized steel pipe, so that the hot-dip galvanized steel pipe and the clamping plate 23 can slide relative to each other again until the pushing block 29 on the docking platform 22 contacts the guide seat 14 on the side of the conveying platform 1 close to the mounting shell 31, causing the clamping plate 23 to separate from the hot-dip galvanized steel pipe, and the conveying plate 21 drives the docking platform 22 to move to the bottom of the auxiliary seat 11, and automatically unloads the welded hot-dip galvanized steel pipe.

[0031] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A hot-dip galvanized steel precision alignment welding machine, comprising two sets of conveyor platforms (1) arranged in a mirror image, and two sets of conveyor chains arranged inside the conveyor platforms (1), characterized in that: A plurality of step-by-step clamping assemblies (2) for clamping and docking are installed at equal intervals between the conveying chains, and a correction welding assembly (3) for welding and alignment correction is provided between the two groups of conveying platforms (1); The step-by-step clamping assembly (2) includes a docking table (22), a conveying plate (21) slidably connected to the docking table (22) and mounted between the conveying chains, and the correction welding assembly (3) includes a U-shaped mounting shell (31) fixed between the two sets of conveying tables (1), a C-shaped rotating drum (32) rotatably connected inside the mounting shell (31), and a welding robot (33) is mounted on the inner wall of the rotating drum (32).

2. The hot-dip galvanized steel precise alignment welding machine according to claim 1, characterized in that: Both ends of the conveying platform (1) are rotatably connected to a rotating rod, and a conveying sprocket connected to the conveying chain is fixedly connected to the rotating rod. The interior of the conveying platform (1) is fixedly connected to an auxiliary seat (11), and a plurality of balls are rollingly embedded on the conveying plate (21) and are in rolling contact with the conveying platform (1) and the auxiliary seat (11).

3. The hot-dip galvanized steel precise alignment welding machine according to claim 2, characterized in that: A V-shaped groove (12) is provided on one side of the top of the auxiliary seat (11), and a limiting conveying groove (13) is provided on the auxiliary seat (11) and is connected to both ends of the V-shaped groove (12). A guide column (24) is fixed to the bottom of the docking platform (22) and is slidably connected to the limiting conveying groove (13).

4. The hot-dip galvanized steel precise alignment welding machine according to claim 1, characterized in that: Mounting seats (25) are fixedly connected to both sides of the top of the docking platform (22), and two sets of trapezoidal sliders (26) are slidably connected in the mounting seats (25). Clamping springs (27) are installed between the trapezoidal sliders (26) and the mounting seats (25), and a clamping plate (23) is fixedly installed on the top of the trapezoidal sliders (26).

5. The hot-dip galvanized steel precise alignment welding machine according to claim 4, characterized in that: A trapezoidal block (28) is slidably connected between the inclined surfaces of the two groups of trapezoidal sliders (26), and a push block (29) slidably connected to the mounting seat (25) is fixedly connected to one side of the trapezoidal block (28). A guide seat (14) matching the corresponding push block (29) is fixedly connected at each corner of the top of the conveying platform (1), and a guide inclined surface is provided on one side of the guide seat (14).

6. The hot-dip galvanized steel precise alignment welding machine according to claim 4, characterized in that: A flexible octopus claw (210) is fixedly mounted on the top of the clamping plate (23), and the wavy side of the flexible octopus claw (210) is located on a side of the clamping plate (23) close to the clamping spring (27).

7. The hot-dip galvanized steel precise alignment welding machine according to claim 6, characterized in that: A cavity (211) is provided inside the docking platform (22), and a piston block (212) is sealed and slidably connected inside the cavity (211). An ear plate is fixedly connected to the top of the conveying plate (21) on a side away from the mounting shell (31). A support rod (213) sealed and slidably connected to the docking platform (22) is fixedly connected between the ear plate and the piston block (212). A high-pressure hose (214) is connected between the cavity (211) and the flexible octopus claw (210).

8. The hot-dip galvanized steel precise alignment and welding integrated machine according to claim 1, characterized in that: Two groups of auxiliary guide plates (34) are symmetrically fixed to the arc-shaped outer wall of the mounting shell (31) away from the opening, and the free sides of the two groups of auxiliary guide plates (34) are arranged to be relatively close and inclined.

9. The hot-dip galvanized steel precise alignment welding machine according to claim 1, characterized in that: A gear ring (35) is fixedly connected to the inner wall of the rotating drum (32), and two sets of rotating shafts are rotatably connected to the mounting shell (31). The rotating shafts are fixedly connected to transmission sprockets and gears (36) meshing with the gear ring (35). The transmission sprockets are connected to each other through a transmission chain. A driving motor for driving the corresponding rotating shafts to rotate is installed on the mounting shell (31) through bolts.

10. The hot-dip galvanized steel precise alignment and welding integrated machine according to claim 1, characterized in that: A plurality of annularly distributed electric push rods (37) are fixedly mounted on the annular inner wall of the mounting shell (31) and on both sides of the rotating drum (32), and correction blocks (38) are mounted on the push rod ends of the electric push rods (37). Infrared ranging sensors are arranged on the inner wall of the rotating drum (32) and on both sides of the welding robot (33). A control panel (15) is mounted on one set of the conveying platforms (1).

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