A welding device for high-pressure oil pipes

Abstract

The present invention relates to the technical field of high-pressure oil pipe welding, in particular to a welding device for high-pressure oil pipes, which includes a first support base with a first moving groove opened at the top and a second support base with a second moving groove opened at the top. The structures of the first support base and the second support base are the same, and the first support base is located in front of the second support base. Grinding boxes are installed at both the left and right ends in the first moving groove, and a first support mechanism is installed between the two grinding boxes in the first moving groove. Welding active boxes are installed at both the left and right ends in the second moving groove, and a number of second support mechanisms are installed between the two welding active boxes in the second moving groove. The present invention can first grind and bevel the high-pressure oil pipe, and then weld the flange joint to the high-pressure oil pipe, so as to solve the problems of unqualified weld seams, welding deformation and oil leakage of the oil pipe after welding the high-pressure oil pipe and the flange joint.

Description

Technical Field

[0001] The present invention relates to the technical field of high-pressure oil pipe welding, in particular to a welding device for high-pressure oil pipes. Background Art

[0002] In the production process of the heavy vehicle industry, it is often necessary to weld the fuel tank oil pipes. Due to process improvement, in order to ensure that the high-pressure oil pipes do not leak oil, the clearance size between the oil pipe and the flange joint is small, and the free length of the oil pipe is large. Ordinary welding will cause quality problems on the weld seam, resulting in unqualified sealing performance of the high-pressure oil pipe and potential hazards such as oil leakage from the outer shell. Summary of the Invention

[0003] In view of this, the purpose of the present invention is to provide a welding device for high-pressure oil pipes, which can first grind and bevel the high-pressure oil pipes, and then weld the flange joints to the high-pressure oil pipes, so as to solve the problems of unqualified weld seams, welding deformation and oil leakage of the oil pipes after welding the high-pressure oil pipes and the flange joints.

[0004] The present invention is implemented by the following technical solutions: A welding device for high-pressure oil pipes includes a first support base with a first moving groove opened at the top and a second support base with a second moving groove opened at the top. The structures of the first support base and the second support base are the same, and the first support base is located in front of the second support base; grinding boxes are installed at both the left and right ends in the first moving groove, and a first support mechanism is installed between the two grinding boxes in the first moving groove; welding master boxes are installed at both the left and right ends in the second moving groove, and a number of second support mechanisms are installed between the two welding master boxes in the second moving groove; a conveyor belt is arranged behind the second support base, a platform is arranged behind the conveyor belt, a number of material placing trays are arranged on the top of the platform, and a number of flange joints are placed on the material placing trays;

[0005] A first rack is fixed on one inner wall of the first moving groove, and a second rack is fixed on one inner wall of the second moving groove;

[0006] A first manipulator is arranged in front of the first support base, a second manipulator is arranged between the first support base and the second support base, and first grippers are arranged on both the first manipulator and the second manipulator; a third manipulator is arranged between the conveyor belt and the platform, and a second gripper and a welding torch are arranged on the third manipulator.

[0007] Preferably, the grinding box includes a first base, which is installed on a first support seat via a third linear guide rail. The first base has three steps that slope downward from left to right. A support assembly and a first centering member are provided on the left step, a second centering member is provided on the middle step, and a moving assembly is provided on the right step. An edge preparation assembly and a grinding assembly are provided on the moving assembly, and both the edge preparation assembly and the grinding assembly are driven by a third motor.

[0008] The support assembly includes a servo slide table provided on the left step. There are two centering slide tables on the servo slide table. The two centering slide tables are driven by a first lead screw. The first lead screw is driven by a first motor. The first lead screw has left - hand and right - hand threads and is respectively connected to the two centering slide tables. Two first universal balls are fixed on one side of each of the two centering slide tables close to each other.

[0009] The first centering member includes a first clamping cylinder provided on the right side of the support assembly. A first centering block is fixed on the claw of the first clamping cylinder. The second centering member includes a second clamping cylinder provided on the middle step. A second centering block is fixed on the claw of the second clamping cylinder.

[0010] Preferably, the moving assembly includes two first linear guide rails provided on the right step, which are arranged left and right. A first sliding plate is fixed on the sliders of the two first linear guide rails. A first telescopic cylinder is installed between the two first linear guide rails on the right step. The end of the push rod of the first telescopic cylinder is fixed with an L - shaped plate. The horizontal plate of the L - shaped plate is connected to the bottom surface of the first sliding plate.

[0011] At the front and rear ends of the upper surface of the first sliding plate, second linear guide rails are fixed. A second sliding plate is fixed on the sliders of the two second linear guide rails. A second motor and a second lead screw are provided between the two second linear guide rails on the first sliding plate. The front and rear ends of the second lead screw are respectively fixed to the first sliding plate via fixing blocks. A moving plate is installed on the second lead screw. The upper end of the moving plate is connected to the bottom surface of the first sliding plate. The rear end of the second lead screw penetrates the rear fixing block and is connected to a first rotating wheel. The output shaft of the second motor is connected to a second rotating wheel. The first rotating wheel and the second rotating wheel are connected via a first synchronous belt.

[0012] Preferably, the edge preparation assembly includes a first power head. The first power head is provided at the front end of the upper surface of the first sliding plate. A first mounting plate is fixed on the first sliding plate. The right - hand output shaft of the first power head penetrates the first mounting plate and is connected to two third rotating wheels, and the left - hand output shaft is connected to a first chamfering tool.

[0013] A speed reducer is installed at the upper end of the left side of the first mounting plate. The speed reducer is driven by a third motor. The output shaft of the speed reducer penetrates through the first mounting plate and is connected with a fourth rotating wheel. The fourth rotating wheel is connected with the third rotating wheel at the left end through a second synchronous belt.

[0014] Preferably, the grinding assembly includes a second power head, and the second power head is arranged at the rear end of the upper surface of the second sliding plate; the output shaft at the right end of the second power head is connected with a fifth rotating wheel, and the fifth rotating wheel is connected with the third rotating wheel at the right end through a third synchronous belt;

[0015] The output shaft at the left end of the second power head is connected with a frame. The inner wall of the front side of the frame is provided with a second telescopic cylinder. The end of the push rod of the second telescopic cylinder penetrates through the inner wall of the rear side of the frame and is connected with a first connecting plate. The front side of the frame is fixed with a second connecting plate. Cutting tools are installed on the inner sides of both the first connecting plate and the second connecting plate; a second chamfering tool is installed on the left side of the frame;

[0016] A U-shaped plate is fixed on the left side of the second sliding plate. A material receiving box is installed on the U-shaped plate. A through hole for the first chamfering tool to pass through is formed in the left side of the material receiving box;

[0017] A first rotating shaft is arranged at the bottom of the first base. The first rotating shaft is driven by a fourth motor. A first gear is sleeved on the lower end of the first rotating shaft.

[0018] Preferably, the structures of the first supporting mechanism and the second supporting mechanism are the same; the first supporting mechanism includes a second base. The second base is installed on the first supporting seat through a fourth linear guide rail. Third clamping cylinders are installed at both the left and right ends of the top of the second base. Third centering blocks are fixed on the clamping jaws of the third clamping cylinders;

[0019] Two fifth linear guide rails are fixed between the two third clamping cylinders at the top of the second base. A first moving seat is fixed on the front end sliding table on the two fifth linear guide rails, and a second moving seat is fixed on the rear end sliding table on the two fifth linear guide rails. Mounting seats are fixed on the tops of both the first moving seat and the second moving seat. A number of second universal balls are fixed on the inner sides of the two mounting seats;

[0020] One mounting plate is fixed on each of the front and rear sides of the fifth linear guide rails at the top of the second base. A fifth motor is installed on one of the mounting plates. The output end of the fifth motor is connected with a third lead screw. The third lead screw penetrates through the first moving seat and the second moving seat and is connected with the other mounting plate through a bearing; the third lead screw is in a right-handed thread connection with the first moving seat and in a left-handed thread connection with the second moving seat;

[0021] A second rotating shaft is provided at the bottom of the second base, and the second rotating shaft is driven by a sixth motor. A second gear is sleeved on the lower end of the second rotating shaft.

[0022] Preferably, the welding master box includes a box body, which is installed on the second support base through a sixth linear guide rail. A hollow rotary platform is installed on one side surface of the box body close to the second support mechanism, and the hollow rotary platform is driven by a seventh motor; on the rotating surface of the hollow rotary platform, a fourth clamping cylinder is connected through a first connecting block, and a clamping block is fixed on the claw of the fourth clamping cylinder;

[0023] A third rotating shaft is provided at the bottom of the box body, and the third rotating shaft is driven by an eighth motor. A third gear is sleeved on the lower end of the third rotating shaft.

[0024] Preferably, both the first manipulator and the second manipulator are connected to the first gripper through a first connecting flange; the first gripper includes a support cross bar, and a plurality of supporting hands are fixed on one side surface of the support cross bar, and a plurality of limiting ports are provided on the supporting hands; on one side surface of the support cross bar between two adjacent supporting hands, a first sliding table cylinder is installed through a fixing plate, a lifting plate is fixed on the sliding table of the first sliding table cylinder, a plurality of limiting rods are provided at the bottom of the lifting plate, the upper ends of the limiting rods penetrate through the lifting plate, and the limiting rods are connected to the lifting plate through springs.

[0025] Preferably, the third manipulator is connected to a second connecting block through a second connecting flange, and a second gripper and a welding torch are installed on the second connecting block; the second gripper includes a third connecting block, the third connecting block is fixed on the second connecting block, and a second sliding table cylinder is installed on the third connecting block, and a limiting block is fixed on the sliding table of the second sliding table cylinder.

[0026] Preferably, a camera is installed on the second connecting block through a mounting bracket.

[0027] The beneficial effects of the present invention:

[0028] (1) The present invention provides a welding device for high-pressure oil pipes. The grinding box can grind and bevel the high-pressure oil pipes, facilitating subsequent welding. The first support mechanism can support the high-pressure oil pipes to prevent the middle part of the high-pressure oil pipes from sagging during grinding and beveling. The welding main box can cooperate with the welding torch to weld the high-pressure oil pipes and flange joints. The first rack facilitates the subsequent movement of the first support mechanism and the grinding box, and the second rack facilitates the subsequent movement of the second support mechanism and the welding main box. The first manipulator can control the first gripper to transport the high-pressure oil pipe from the previous process to the first support seat, enabling grinding and beveling of the high-pressure oil pipe. The second manipulator can control the first gripper to transport the ground and beveled high-pressure oil pipe from the first support seat to the second support seat, enabling welding of the high-pressure oil pipe and the flange joint. After welding is completed, the second manipulator can transport the high-pressure oil pipe to the conveyor belt to facilitate the high-pressure oil pipe to enter the next process. The third manipulator can control the second gripper to transport the flange joint to the welding main box for subsequent welding, and the third manipulator can also control the welding torch to weld the high-pressure oil pipe and the flange joint.

[0029] (2) In an embodiment of the present invention, the position of the flange joint can be observed through a camera, facilitating subsequent transportation of the flange joint by the third manipulator.

[0030] The present invention can first grind and bevel the high-pressure oil pipe, and then weld the flange joint to the high-pressure oil pipe, solving the problems of unqualified welds, welding deformation, and oil leakage of the high-pressure oil pipe after welding the flange joint. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a schematic structural diagram of the invention.

[0032] Figure 2 is a schematic structural diagram of the first support seat.

[0033] Figure 3 is Figure 2 an enlarged view of part A of

[0034] Figure 4 is a schematic structural diagram of the feeding tray.

[0035] Figure 5 is a schematic structural diagram of the grinding box.

[0036] Figure 6 is a schematic structural diagram of the first linear guide rail.

[0037] Figure 7 is a schematic structural diagram of the second sliding plate.

[0038] Figure 8 is a schematic structural diagram of the first sliding plate.

[0039] Figure 9 It is a schematic structural diagram of the first support mechanism.

[0040] Figure 10 It is a right view of the first support mechanism.

[0041] Figure 11 It is a schematic structural diagram of the welding active box.

[0042] Figure 12 It is a schematic structural diagram of the hollow rotary platform.

[0043] Figure 13 It is a schematic structural diagram of the first gripper.

[0044] Figure 14 It is a schematic structural diagram of the second gripper. Detailed implementation manners

[0045] The present invention will be further described below with reference to the accompanying drawings.

[0046] Please refer to Figures 1 to 14 , the present invention provides an embodiment: a welding device for high-pressure oil pipes, including a first support seat 1 with a first moving groove 101 opened at the top and a second support seat 2 with a second moving groove opened at the top. The structures of the first support seat 1 and the second support seat 2 are the same, and the first support seat 1 is located in front of the second support seat 2. Both left and right ends in the first moving groove 101 are provided with grinding boxes 3, and the high-pressure oil pipes can be ground and grooved through the grinding boxes 3, facilitating subsequent welding. A first support mechanism 4 is installed between the two grinding boxes 3 in the first moving groove 101, which can support the high-pressure oil pipes to prevent the middle part of the high-pressure oil pipes from sagging during grinding and grooving;

[0047] Both left and right ends in the second moving groove are provided with welding active boxes 5, which can cooperate with a welding torch 13 to weld the high-pressure oil pipes and flange joints 16. A plurality of second support mechanisms 6 are installed between the two welding active boxes 5 in the second moving groove, which can support the high-pressure oil pipes to prevent the middle part of the high-pressure oil pipes from sagging during welding. A conveyor belt 7 is arranged behind the second support seat 2, so that the welded high-pressure oil pipes can be conveyed to the next process through the conveyor belt 7. A platform 8 is arranged behind the conveyor belt 7, and a plurality of feeding trays 15 are arranged on the top of the platform 8 for placing flange joints 16, and a plurality of flange joints 16 are placed on the feeding trays 15;

[0048] One inner wall of one side of the first moving groove 101 is fixedly provided with a first rack 102, which is convenient for the subsequent movement of the first support mechanism 4 and the grinding box 3. One inner wall of one side of the second moving groove is fixedly provided with a second rack, which is convenient for the subsequent movement of the second support mechanism 6 and the welding driving box 5;

[0049] A first manipulator 9 is arranged in front of the first support base 1. A second manipulator 10 is arranged between the first support base 1 and the second support base 2. First grippers 11 are arranged on both the first manipulator 9 and the second manipulator 10. The first manipulator 9 can control the first gripper 11 to carry the high-pressure oil pipe from the previous process to the first support base 1, so as to grind and bevel the high-pressure oil pipe. The second manipulator 10 can control the first gripper 11 to carry the ground and beveled high-pressure oil pipe from the first support base 1 to the second support base 2, so as to weld the high-pressure oil pipe and the flange joint 16. After the welding is completed, the second manipulator 10 can carry the high-pressure oil pipe to the conveyor belt 7, so as to facilitate the high-pressure oil pipe to enter the next process. A third manipulator 12 is arranged between the conveyor belt 7 and the platform 8. A second gripper 14 and a welding torch 13 are arranged on the third manipulator 12. The third manipulator 12 can control the second gripper 14 to carry the flange joint 16 to the welding driving box 5, which is convenient for subsequent welding. The third manipulator 12 can also control the welding torch 13 to weld the high-pressure oil pipe and the flange joint 16.

[0050] Please continue to refer to Figures 5 to 8 , the grinding box 3 includes a first base 31. The first base 31 is installed on the first support base 1 through a third linear guide rail, which is convenient for the grinding box 3 to move on the first support base 1. The first base 31 has three steps inclined downward from left to right, which are used to install various components. A support assembly 32 and a first centering member 33 are arranged on the left step. The support assembly 32 can support the high-pressure oil pipe and perform preliminary centering on it. The first centering member 33 can perform secondary centering on the high-pressure oil pipe, which is convenient for subsequent grinding and beveling. A second centering member 34 is arranged on the middle step, so as to perform three-time centering on the high-pressure oil pipe, which is convenient for better subsequent grinding and beveling;

[0051] A moving component 35 is arranged on the right-side step. Through the moving component 35, the beveling component 36 and the grinding component 37 can be moved, so that the beveling component 36 and the grinding component 37 can be switched, facilitating subsequent beveling and grinding of the high-pressure oil pipe. The beveling component 36 and the grinding component 37 are arranged on the moving component 35. Through the beveling component 36, the high-pressure oil pipe can be beveled, and through the grinding component 37, the high-pressure oil pipe can be ground, thus facilitating subsequent welding of the high-pressure oil pipe. The beveling component 36 and the grinding component 37 are both driven by a third motor 38. Through the third motor 38, the beveling component 36 and the grinding component 37 can be driven, so as to bevel and grind the high-pressure oil pipe.

[0052] The support component 32 includes a servo slide table 321 arranged on the left-side step. The model of the servo slide table 321 can be CRS170-01-350, but is not limited thereto. Through the servo slide table 321, the high-pressure oil pipe can be supported and preliminarily centered, facilitating subsequent grinding. There are two centering slide tables 322 on the servo slide table 321. The two centering slide tables 322 are driven by a first lead screw (not shown). The first lead screw is driven by a first motor (not shown). By driving the first lead screw to rotate through the first motor, the two centering slide tables 322 can be driven to center the high-pressure oil pipe. The first lead screw has left-hand and right-hand threads and is respectively connected to the two centering slide tables 322. Two first universal balls 323 are fixed on one side of the two centering slide tables 322 close to each other. Through the first universal balls 323, the sliding of the high-pressure oil pipe can be facilitated.

[0053] The first centering member 33 includes a first clamping cylinder 331 arranged on the right side of the support component 32. The model of the first clamping cylinder 331 can be JRT_AF30A-90-PSP-3M, but is not limited thereto. Through the first clamping cylinder 331, the first centering block 332 can be driven to center the high-pressure oil pipe. The first centering block 332 is fixed on the jaw of the first clamping cylinder 331.

[0054] The second centering member 34 includes a second clamping cylinder 341 arranged on the middle step. The model of the second clamping cylinder 341 can be JRT_AF30A-90-PSP-3M, but is not limited thereto. Through the second clamping cylinder 341, the second centering block 342 can be driven to center the high-pressure oil pipe. The second centering block 342 is fixed on the jaw of the second clamping cylinder 341.

[0055] The moving component 35 includes two first linear guide rails 351 disposed on the right stepped portion, which can play a role in limiting and guiding when the first sliding plate 353 moves back and forth. The two first linear guide rails 351 are arranged left and right; a first sliding plate 353 is fixed on the sliders of the two first linear guide rails 351. A first telescopic cylinder 354 is installed between the two first linear guide rails 351 on the right stepped portion. The first telescopic cylinder 354 can drive the L-shaped plate 355 to move back and forth, thereby driving the first sliding plate 353 to move back and forth; the end of the push rod of the first telescopic cylinder 354 is fixed with an L-shaped plate 355, and the horizontal plate of the L-shaped plate 355 is connected to the bottom surface of the first sliding plate 353.

[0056] When it is necessary to switch the beveling component 36 or the grinding component 37, start the first telescopic cylinder 354 to drive the L-shaped plate 355 to move back and forth, thereby driving the first sliding plate 353 to move back and forth on the first linear guide rail 351, so as to switch between the beveling component 36 and the grinding component 37.

[0057] Both front and rear ends of the upper surface of the first sliding plate 353 are fixed with second linear guide rails 356, which can play a role in limiting and guiding when the second sliding plate 357 moves left and right; a second sliding plate 357 is fixed on the sliders of the two second linear guide rails 356; a second motor 358 and a second lead screw 359 are arranged between the two second linear guide rails 356 on the first sliding plate 353. The second motor 358 is used to drive the second lead screw 359 to rotate, facilitating the subsequent left and right movement of the second sliding plate 357; the front and rear ends of the second lead screw 359 are respectively fixed to the first sliding plate 353 through fixing blocks 3510. A moving plate 3511 is installed on the second lead screw 359. The upper end of the moving plate 3511 is connected to the bottom surface of the first sliding plate 353. The rotation of the second lead screw 359 drives the moving plate 3511 to move left and right, thereby driving the second sliding plate 357 to move left and right; the rear end of the second lead screw 359 penetrates the rear fixing block 3510 and is connected with a first rotating wheel 3512, and the output shaft of the second motor 358 is connected with a second rotating wheel 3513. The first rotating wheel 3512 and the second rotating wheel 3513 are connected by a first synchronous belt (not shown).

[0058] When it is necessary to move the beveling component 36 and the grinding component 37 left and right, start the second motor 358 to drive the second rotating wheel 3513 to rotate, and drive the first rotating wheel 3512 to rotate through the first synchronous belt, so as to drive the second lead screw 359 to rotate, thereby driving the moving plate 3511 to move left and right, and further driving the second sliding plate 357 to move left and right.

[0059] The beveling component 36 includes a first power head 361. The model of the first power head 361 can be 04ER40, but is not limited thereto. The first power head 361 can drive the first chamfering tool 364 to rotate, so as to bevel the high-pressure oil pipe, facilitating subsequent welding. The first power head 361 is arranged at the front end of the upper surface of the first sliding plate 353. A first mounting plate 362 is fixed on the first sliding plate 353 for mounting a speed reducer 365. The right output shaft of the first power head 361 penetrates through the first mounting plate 362 and is connected with two third rotating wheels 363, and the left output shaft is connected with a first chamfering tool 364 for beveling the high-pressure oil pipe.

[0060] A speed reducer 365 is mounted on the upper left side of the first mounting plate 362. The speed reducer 365 is driven by a third motor 38. The third motor 38 can drive the speed reducer 365, so as to drive a fourth rotating wheel 366 to rotate. The output shaft of the speed reducer 365 penetrates through the first mounting plate 362 and is connected with the fourth rotating wheel 366. The fourth rotating wheel 366 is connected with the third rotating wheel 363 at the left end through a second synchronous belt (not shown).

[0061] When it is necessary to bevel the high-pressure oil pipe, start the third motor 38 to drive the speed reducer 365, so as to drive the fourth rotating wheel 366 to rotate. Through the second synchronous belt, drive the third rotating wheel 363 at the left end to rotate, so as to drive the first power head 361 to rotate the first chamfering tool 364.

[0062] The grinding component 37 includes a second power head 371. The model of the second power head 371 can be 04ER40, but is not limited thereto. The second power head 371 can drive the second chamfering tool 375 and the tool 374 to rotate, so as to grind the high-pressure oil pipe, facilitating subsequent welding. The second power head 371 is arranged at the rear end of the upper surface of the second sliding plate 357. The right output shaft of the second power head 371 is connected with a fifth rotating wheel. The fifth rotating wheel is connected with the third rotating wheel 363 at the right end through a third synchronous belt.

[0063] The left output shaft of the second power head 371 is connected to a frame 372. The front inner wall of the frame 372 is provided with a second telescopic cylinder 373. By means of the second telescopic cylinder 373, the first connecting plate can be driven to move back and forth, thereby driving the front tool 374 to move back and forth, so that the distance between the two tools 374 can be adjusted, enabling the grinding of high-pressure oil pipes with different diameters; the end of the push rod of the second telescopic cylinder 373 penetrates the rear inner wall of the frame 372 and is connected to the first connecting plate. The front side of the frame 372 is fixed with a second connecting plate, and tools 374 are installed on the inner sides of both the first connecting plate and the second connecting plate; a second chamfering tool 375 is installed on the left side of the frame 372. The high-pressure oil pipe can be ground by the tools 374 and the second chamfering tool 375.

[0064] When it is necessary to grind the high-pressure oil pipe, start the third motor 38 to drive the speed reducer 365, thereby driving the fourth rotating wheel 366 to rotate. Through the second synchronous belt, the third rotating wheel 363 at the left end is driven to rotate, causing the third rotating wheel 363 at the right end to rotate. Through the third synchronous belt, the fifth rotating wheel is driven to rotate, enabling the second power head 371 to rotate the frame 372, and further driving the tools 374 and the second chamfering tool 375 to rotate.

[0065] Start the first motor to drive the first lead screw to rotate, thereby enabling the two centering slides 322 to center the high-pressure oil pipe, allowing the high-pressure oil pipe to move on the first universal ball 323. The high-pressure oil pipe is further centered by the first centering member 33 and the second centering member 34; the beveling component 36 and the grinding component 37 are switched by the moving component 35, and the second motor 358 drives the beveling component 36 and the grinding component 37 to grind and bevel the high-pressure oil pipe.

[0066] The left side of the second sliding plate 357 is fixed with a U-shaped plate 39. A material receiving box 310 is installed on the U-shaped plate 39. The material receiving box 310 can collect the waste chips generated when the first chamfering tool 364 bevels the high-pressure oil pipe. A through hole for the first chamfering tool 364 to pass through is opened on the left side of the material receiving box 310.

[0067] A first rotating shaft is provided at the bottom of the first base 31. The first rotating shaft is driven by a fourth motor. A first gear is sleeved at the lower end of the first rotating shaft. The first gear is engaged with the first rack 102, enabling the grinding box 3 to move in the first moving groove 101; the fourth motor drives the first rotating shaft to rotate, thereby driving the first gear to rotate on the first rack 102, and further driving the grinding box 3 to move, so that the high-pressure oil pipes with different lengths can be ground and beveled.

[0068] Please continue to refer to Figure 9 、Figure 10 , the structures of the first support mechanism 4 and the second support mechanism 6 are the same; the first support mechanism 4 includes a second base 41, and the second base 41 is installed on the first support base 1 via a fourth linear guide rail, facilitating the movement of the first support mechanism 4 on the first support base 1; at both the left and right ends of the top of the second base 41, third clamping cylinders 42 are installed. Through the third clamping cylinders 42, a third centering block 43 can be driven to clamp and fix the high-pressure oil pipe, and the third centering block 43 is fixed on the jaws of the third clamping cylinders 42;

[0069] At the top of the second base 41, between the two third clamping cylinders 42, two fifth linear guide rails 44 are fixed. Through the two fifth linear guide rails 44, it is convenient for the first moving seat and the second moving seat to move on the second base 41. On the front slide tables of the two fifth linear guide rails 44, a first moving seat is fixed, and on the rear slide tables of the two fifth linear guide rails 44, a second moving seat is fixed. At the top of both the first moving seat and the second moving seat, a mounting seat 45 is fixed for mounting the second universal ball 46. On the inner sides of the two mounting seats 45, several second universal balls 46 are fixed. Through the second universal balls 46, the high-pressure oil pipe can rotate on the second universal balls 46, thus facilitating subsequent grinding, beveling, and welding;

[0070] At the top of the second base 41, on both the front and rear sides of the fifth linear guide rail 44, a mounting plate 47 is fixed. On one side of the mounting plate 47, a fifth motor 48 is installed. Through the fifth motor 48, the third lead screw can be driven to rotate, thereby being able to move the first moving seat and the second moving seat, facilitating the centering of the high-pressure oil pipe; the output end of the fifth motor 48 is connected to the third lead screw, and the third lead screw penetrates through the first moving seat and the second moving seat and is connected to the mounting plate 47 on the other side by a bearing; the third lead screw is in a right-handed thread connection with the first moving seat and a left-handed thread connection with the second moving seat, such that by rotating the third lead screw, the first moving seat and the second moving seat can be driven to move in opposite directions, facilitating the centering of the high-pressure oil pipe;

[0071] At the bottom of the second base 41, a second rotating shaft 49 is provided, and the second rotating shaft 49 is driven by a sixth motor 410. At the lower end of the second rotating shaft 49, a second gear 411 is sleeved, and the second gear 411 cooperates with the first rack 102, enabling the first support mechanism 4 to move in the first moving groove 101; by driving the second rotating shaft 49 to rotate through the sixth motor 410, the second gear 411 is driven to rotate on the first rack 102, and then the first support mechanism 4 is driven to move, enabling the support of high-pressure oil pipes of different lengths.

[0072] Please continue to refer to Figure 11 、 Figure 12, the welding active box 5 includes a box body 51, and the box body 51 is installed on the second support base 2 through a sixth linear guide rail, facilitating the movement of the box body 51 on the second support base 2. A hollow rotary platform 52 is installed on one side of the box body 51 close to the second support mechanism 6; the hollow rotary platform 52 is connected to the box body 51 for fixation and connected to the first connecting block 54 for rotation. The model of the hollow rotary platform 52 can be MTN200-10-NXG, but is not limited thereto. The hollow rotary platform 52 is driven by a seventh motor 53. By driving the seventh motor 53, the rotating surface of the hollow rotary platform 52 rotates, thereby driving the first connecting block 54 to rotate, further driving the fourth clamping cylinder 55 to rotate, and then driving the flange joint 16 to rotate; on the rotating surface of the hollow rotary platform 52, a fourth clamping cylinder 55 is connected through a first connecting block 54. The first connecting block 54 is used to connect the fourth clamping cylinder 55. A clamping block 56 is fixed on the clamping jaw of the fourth clamping cylinder 55. By driving the clamping block 56 through the fourth clamping cylinder 55, the flange joint 16 can be clamped and fixed, facilitating subsequent welding;

[0073] A third rotating shaft is provided at the bottom of the box body 51. The third rotating shaft is driven by an eighth motor. A third gear is sleeved at the lower end of the third rotating shaft. The third gear is matched with a second rack, enabling the welding active box 5 to move in the second moving groove; by driving the third rotating shaft to rotate through the eighth motor, the third gear rotates on the second rack, and then drives the welding active box 5 to move, enabling the welding of high-pressure oil pipes with different lengths.

[0074] Please continue to refer to Figure 13 , both the first manipulator 9 and the second manipulator 10 are connected to the first gripper 11 through a first connecting flange 17; the first gripper 11 includes a support cross bar 111. A plurality of support hands 112 are fixed on one side surface of the support cross bar 111. The support hands 112 have a plurality of limit openings, which can limit the high-pressure oil pipe, facilitating better handling of the high-pressure oil pipe subsequently; on one side surface of the support cross bar 111 and between two adjacent support hands 112, a first slide cylinder 114 is installed through a fixing plate 113. By the first slide cylinder 114, the lifting plate 115 can be driven to move up and down. The slide of the first slide cylinder 114 is fixed with a lifting plate 115. A plurality of limit rods 116 are provided at the bottom of the lifting plate 115. Through the limit rods 116, the high-pressure oil pipe can be extruded, enabling the high-pressure oil pipe to be better limited and fixed on the support hands 112. The upper end of the limit rod 116 penetrates the lifting plate 115, and the limit rod 116 is connected to the lifting plate 115 through a spring 117. The spring 117 can play a buffering role, preventing the limit rod 116 from over-extruding the high-pressure oil pipe and damaging the high-pressure oil pipe.

[0075] Please continue to refer toFigure 14 The third manipulator 12 is connected with a second connecting block 18 through a second connecting flange. A second gripper 14 and a welding torch 13 are installed on the second connecting block 18. The second gripper 14 includes a third connecting block 141 for connecting a second slide cylinder 142. The third connecting block 141 is fixed on the second connecting block 18. The second slide cylinder 142 is installed on the third connecting block 141. The model of the second slide cylinder 142 can be MHSL3-63D, but is not limited thereto. The second slide cylinder 142 can drive a limit block 143 to clamp and fix the flange joint 16, facilitating the subsequent handling of the flange joint 16. The limit block 143 is fixed on the slide of the second slide cylinder 142.

[0076] The welding process of this embodiment is as follows:

[0077] Step S1: The first manipulator 9 controls the first gripper 11 to carry the high-pressure oil pipe to the first support mechanism 4, and the first support mechanism 4 clamps and fixes the high-pressure oil pipe.

[0078] Step S2: The fifth motor 48 drives the third lead screw to rotate, thereby driving the first moving seat and the second moving seat to move towards each other to position the high-pressure oil pipe, and then two third clamping cylinders 42 clamp and fix the high-pressure oil pipe.

[0079] Step S3: The fourth motor drives the first rotating shaft to rotate, thereby driving the first gear to rotate on the first rack 102, and further driving the grinding box 3 to move, so as to adjust the position of the grinding box 3 to move the grinding box 3 to the position of the high-pressure oil pipe. Then the first motor drives the first lead screw to rotate, thereby driving two centering slides 322 to center the end of the high-pressure oil pipe, so that the end of the high-pressure oil pipe can move on the first universal ball 323, and the first centering member 33 and the second centering member 34 further center the end of the high-pressure oil pipe.

[0080] Step S4: Start the third motor 38 to drive the speed reducer 365, thereby driving the fourth rotating wheel 366 to rotate. Through the second synchronous belt, the third rotating wheel 363 at the left end is driven to rotate, so as to drive the third rotating wheel 363 at the right end to rotate. Through the third synchronous belt, the fifth rotating wheel is driven to rotate, so as to drive the second power head 371 to rotate the frame 372, and further drive the cutter 374 and the second chamfering cutter 375 to rotate, thereby grinding the end of the high-pressure oil pipe.

[0081] Step S5: After the grinding is completed, start the first telescopic cylinder 354 to drive the L-shaped plate 355 to move, thereby driving the first sliding plate 353 to move on the first linear guide 351, so as to switch the positions of the split beveling assembly 36 and the grinding assembly 37; start the third motor 38 to drive the speed reducer 365, thereby driving the fourth rotating wheel 366 to rotate, and drive the third rotating wheel 363 at the left end to rotate through the second synchronous belt, so as to drive the first power head 361 to rotate the first beveling tool 364, thereby beveling the end of the high-pressure oil pipe.

[0082] Step S6: After the beveling is completed, the second manipulator 10 controls the first gripper 11 to carry the high-pressure oil pipe to the second support mechanism 6, and the second support mechanism 6 clamps and fixes the high-pressure oil pipe; the third manipulator 12 controls the second gripper 14 to carry the flange joint 16 on the feeding tray 15 to the welding main box 5, and drives the clamping block 56 through the fourth clamping cylinder 55 to clamp and fix the flange joint 16.

[0083] Step S7: Drive the third rotating shaft to rotate through the eighth motor, thereby driving the third gear to rotate on the second rack, and then drive the welding main box 5 to move to the end of the high-pressure oil pipe, so that the flange joint 16 and the end of the high-pressure oil pipe are matched.

[0084] Step S8: The third manipulator 12 controls the welding torch 13 to spot-weld the flange joint 16 and the end of the high-pressure oil pipe, so as to preliminarily weld the flange joint 16 on the high-pressure oil pipe. Then loosen the clamping and fixing of the high-pressure oil pipe by the third clamping cylinder 42 on the second support mechanism 6. Then drive the rotating surface of the hollow rotating platform 52 to rotate through the seventh motor 53, thereby driving the first connecting block 54 to rotate, thereby driving the fourth clamping cylinder 55 to rotate, and further driving the flange joint 16 and the high-pressure oil pipe to rotate, so that the welding torch 13 can perform secondary welding on the flange joint 16 and the high-pressure oil pipe.

[0085] Step S9: After the welding is completed, the second manipulator 10 controls the first gripper 11 to carry the high-pressure oil pipe to the conveyor belt 7, and the conveyor belt 7 conveys the high-pressure oil pipe to the next process.

[0086] Please continue to refer to Figure 14 , in an embodiment of the present invention, a camera 145 is installed on the second connecting block 18 through a mounting bracket 144. The position of the flange joint 16 can be observed through the camera 145, which is convenient for the subsequent third manipulator 12 to carry the flange joint 16.

[0087] The above are only the preferred embodiments of the present invention and should not be construed as limitations to the present application. All equivalent changes and modifications made according to the scope of the patent application of the present invention shall fall within the scope of the present invention.

Claims

1. A welding device for high-pressure oil pipes, characterized in that: It includes a first support base with a first moving groove opened at the top and a second support base with a second moving groove opened at the top. The structures of the first support base and the second support base are the same, and the first support base is located in front of the second support base; At both left and right ends in the first moving groove, grinding boxes are installed. Between the two grinding boxes in the first moving groove, a first support mechanism is installed; at both left and right ends in the second moving groove, welding active boxes are installed. Between the two welding active boxes in the second moving groove, a number of second support mechanisms are installed; behind the second support base, a conveyor belt is arranged. Behind the conveyor belt, a platform is arranged. On the top of the platform, a number of material placing trays are arranged, and a number of flange joints are placed on the material placing trays; On one inner wall of the first moving groove, a first rack is fixed. On one inner wall of the second moving groove, a second rack is fixed; In front of the first support base, a first manipulator is arranged. Between the first support base and the second support base, a second manipulator is arranged. On both the first manipulator and the second manipulator, first grippers are arranged; between the conveyor belt and the platform, a third manipulator is arranged. On the third manipulator, a second gripper and a welding torch are arranged; The grinding box includes a first base, and the first base is installed on the first support base through a third linear guide rail. The first base has three steps that slope downward from left to right. On the left step, a support component and a first centering part are arranged. On the middle step, a second centering part is arranged. On the right step, a moving component is arranged. On the moving component, a beveling component and a grinding component are arranged. Both the beveling component and the grinding component are driven by a third motor; The support component includes a servo slide table arranged on the left step. On the servo slide table, there are two centering slide tables. The two centering slide tables are driven by a first lead screw. The first lead screw is driven by a first motor. The first lead screw has left - hand and right - hand threads and is respectively connected to the two centering slide tables; on one side of the two centering slide tables close to each other, two first universal balls are fixed; The first centering part includes a first clamping cylinder arranged on the right side of the support component. On the claw of the first clamping cylinder, a first centering block is fixed; the second centering part includes a second clamping cylinder arranged on the middle step. On the claw of the second clamping cylinder, a second centering block is fixed.

2. The welding device for a high-pressure oil pipe according to claim 1, characterized in that: The moving component includes two first linear guide rails arranged on the right step, and the two first linear guide rails are arranged horizontally; on the sliders of the two first linear guide rails, a first sliding plate is fixed. Between the two first linear guide rails on the right step, a first telescopic cylinder is installed. The end of the push rod of the first telescopic cylinder is fixed with an L - shaped plate, and the horizontal plate of the L - shaped plate is connected to the bottom surface of the first sliding plate; At both the front and rear ends of the upper surface of the first sliding plate, second linear guide rails are fixedly installed. On the sliders of the two second linear guide rails, a second sliding plate is fixedly installed. Between the two second linear guide rails on the first sliding plate, a second motor and a second lead screw are arranged. The front and rear ends of the second lead screw are respectively fixed to the first sliding plate through fixing blocks. A moving plate is installed on the second lead screw, and the upper end of the moving plate is connected to the bottom surface of the first sliding plate. The rear end of the second lead screw penetrates the rear fixing block and is connected to a first rotating wheel. The output shaft of the second motor is connected to a second rotating wheel. The first rotating wheel and the second rotating wheel are connected through a first synchronous belt.

3. The welding device for a high-pressure oil pipe according to claim 2, characterized in that: The beveling component includes a first power head. The first power head is arranged at the front end of the upper surface of the first sliding plate, and a first mounting plate is fixedly installed on the first sliding plate. The output shaft at the right end of the first power head penetrates the first mounting plate and is connected to two third rotating wheels, and the output shaft at the left end is connected to a first chamfering tool. At the upper end of the left side surface of the first mounting plate, a speed reducer is installed. The speed reducer is driven by a third motor. The output shaft of the speed reducer penetrates the first mounting plate and is connected to a fourth rotating wheel. The fourth rotating wheel is connected to the third rotating wheel at the left end through a second synchronous belt.

4. A welding device for a high-pressure oil pipe according to claim 3, characterized in that: The grinding component includes a second power head. The second power head is arranged at the rear end of the upper surface of the second sliding plate. The output shaft at the right end of the second power head is connected to a fifth rotating wheel. The fifth rotating wheel is connected to the third rotating wheel at the right end through a third synchronous belt. The output shaft at the left end of the second power head is connected to a frame. On the front inner wall of the frame, a second telescopic cylinder is arranged. The end of the push rod of the second telescopic cylinder penetrates the rear inner wall of the frame and is connected to a first connecting plate. On the front side surface of the frame, a second connecting plate is fixedly installed. Cutting tools are installed on the inner side surfaces of both the first connecting plate and the second connecting plate. A second chamfering tool is installed on the left side surface of the frame. On the left side surface of the second sliding plate, a U-shaped plate is fixedly installed. A material receiving box is installed on the U-shaped plate. A through hole for the first chamfering tool to pass through is formed in the left side surface of the material receiving box. At the bottom of the first base, a first rotating shaft is arranged. The first rotating shaft is driven by a fourth motor. A first gear is sleeved on the lower end of the first rotating shaft.

5. A welding device for a high-pressure oil pipe according to claim 1, characterized in that: The structures of the first supporting mechanism and the second supporting mechanism are the same. The first supporting mechanism includes a second base. The second base is installed on the first supporting seat through a fourth linear guide rail. At both the left and right ends of the top of the second base, third clamping cylinders are installed. Third centering blocks are fixedly installed on the jaws of the third clamping cylinders. At the top of the second base, between the two third clamping cylinders, two fifth linear guide rails are fixedly installed. On the front sliders of the two fifth linear guide rails, a first moving seat is fixedly installed. On the rear sliders of the two fifth linear guide rails, a second moving seat is fixedly installed. Mounting seats are fixedly installed on the tops of both the first moving seat and the second moving seat. A number of second universal balls are fixedly installed on the inner side surfaces of the two mounting seats. On both the front and rear sides of the fifth linear guide rail, there is a mounting plate fixed to the top of the second base. A fifth motor is installed on one of the mounting plates. The output end of the fifth motor is connected to a third lead screw. The third lead screw penetrates through the first moving seat and the second moving seat and is connected to the mounting plate on the other side by a bearing. The third lead screw is in a right-handed thread connection with the first moving seat and a left-handed thread connection with the second moving seat. A second rotating shaft is provided at the bottom of the second base. The second rotating shaft is driven by a sixth motor, and a second gear is sleeved on the lower end of the second rotating shaft.

6. The welding device for a high-pressure oil pipe according to claim 1, characterized in that: The welding active box includes a box body. The box body is installed on the second support seat via a sixth linear guide rail. A hollow rotating platform is installed on one side surface of the box body close to the second support mechanism. The hollow rotating platform is driven by a seventh motor. A fourth clamping cylinder is connected to the rotating surface of the hollow rotating platform via a first connecting block. A clamping block is fixed on the claw of the fourth clamping cylinder. A third rotating shaft is provided at the bottom of the box body. The third rotating shaft is driven by an eighth motor, and a third gear is sleeved on the lower end of the third rotating shaft.

7. A welding device for a high-pressure oil pipe according to claim 1, characterized in that: Both the first manipulator and the second manipulator are connected to the first gripper via a first connecting flange. The first gripper includes a support cross bar. A number of support hands are fixed on one side surface of the support cross bar. There are a number of limiting ports on the support hands. A first slide cylinder is installed on one side surface of the support cross bar between two adjacent support hands via a fixing plate. A lifting plate is fixed on the slide of the first slide cylinder. A number of limiting rods are provided at the bottom of the lifting plate. The upper ends of the limiting rods penetrate through the lifting plate, and the limiting rods are connected to the lifting plate by springs.

8. A welding device for a high-pressure oil pipe according to claim 1, characterized in that: The third manipulator is connected to a second connecting block via a second connecting flange. A second gripper and a welding torch are installed on the second connecting block. The second gripper includes a third connecting block. The third connecting block is fixed on the second connecting block. A second slide cylinder is installed on the third connecting block. A limiting block is fixed on the slide of the second slide cylinder.

9. The welding device for a high-pressure oil pipe according to claim 8, characterized in that: A camera is installed on the second connecting block via a mounting bracket.

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