A welding device and operation method in steel pipe manufacturing

Abstract

The present invention relates to the field of steel pipe welding. The present invention discloses a welding device and an operating method for steel pipe manufacturing. The problem to be solved by the present invention is that when welding existing steel pipes, two steel pipes need to be butted first, and the end faces of the steel pipes generally need to be polished, and the surface burrs of the steel pipes need to be removed before welding. However, the existing equipment performs this polishing and welding separately, which directly affects the processing efficiency in the steel pipe manufacturing process. The present invention drives two steel pipes through a bearing device to provide a clamping force for the two steel pipes under the restriction of a pressure spring, and then when welding the two steel pipes, the welding of the two steel pipes can be more stable under the restriction of a resistance rod. The grinding device is set to grind the end of the steel pipe under the continuous rotation of the grinding roller, and the end of the steel pipe is polished and flat, so that the two butt-arranged steel pipe welding parts can be effectively butted.

Description

Technical Field

[0001] The invention relates to the field of steel pipe welding, and in particular to a welding device and an operating method in steel pipe manufacturing. Background Art

[0002] Welded steel pipe refers to a steel pipe with seams on the surface that is formed by bending steel strips or steel plates into round, square and other shapes and then welding them. The blanks used for welded steel pipes are steel plates or strips. With the rapid development of high-quality strip steel continuous rolling production and the advancement of welding and inspection technology, the quality of welds has been continuously improved, the varieties and specifications of welded steel pipes have been increasing, and they have replaced seamless steel pipes in more and more fields.

[0003] The existing patent (Announcement No.: CN112935696B) discloses a steel pipe welding auxiliary device, including a support seat, the support seat is installed at the upper end of the base, the base is provided with a welding position, the side of the support seat away from the welding position is provided with a liftable support plate and a pipe rotating mechanism in sequence, one side of the base is provided with an arc-shaped guide rail, the guide rail is provided with an adjustment mechanism for placing the steel pipe, and the adjustment mechanism is provided with a pressure plate for fixing the steel pipe. The present invention can fix, rotate and dock the two welded steel pipes, ensure the firmness and stability of the docking of the two steel pipes during the welding process, and the angle and height are convenient and labor-saving to adjust, which not only saves manpower, improves work efficiency, saves time, but also improves welding quality, and solves the problems of low welding quality and slow welding speed due to inconvenient fixing and easy movement during welding in the current steel pipe welding process. In the process of realizing the present invention, the inventors found that there are at least the following problems in the prior art that have not been solved: when welding existing steel pipes, the two steel pipes need to be butt-jointed first, and the end faces of the steel pipes generally need to be polished to remove the burrs on the surface of the steel pipes before welding. However, in the existing equipment, the polishing and welding are performed separately, which directly affects the processing efficiency in the steel pipe manufacturing process. Summary of the invention

[0004] The purpose of the present invention is to provide a welding device and an operating method for steel pipe manufacturing to solve the problems raised in the above background technology. To achieve the above purpose, the present invention provides the following technical solutions: a welding device for steel pipe manufacturing, comprising a horizontally arranged welding table, a moving device is arranged on the top of the welding table, the moving device is slidably matched with the top of the welding table, a bearing device is fixedly arranged on the moving device, a grinding device is rotatably arranged on the top of the welding table, the two grinding devices correspond to the two bearing devices respectively, and a welder is also fixedly arranged on the top of the welding table.

[0005] Preferably, a rectangular annular groove is provided on the top of the welding table, and the moving device includes a pushing electric cylinder fixedly arranged on the welding table, and the telescopic end of the pushing electric cylinder is connected to a pushing frame, and a rotating rod is provided on the welding table for corresponding rotation, and rotating gears are fixedly provided on the two rotating rods, and racks meshing with the rotating gears are provided on both side walls of the pushing frame, and a moving frame is fixedly connected to the rotating rod, and a sliding groove is provided on the moving frame, and a moving plate is slidably provided in the sliding groove, and a clamping rod is fixedly connected to the moving plate, and the clamping rod is slidably matched with the rectangular annular groove, and a limiting track is fixedly provided on the top of the welding table, and a sliding frame is slidably provided on the limiting track, and a mounting frame is slidably provided on the sliding frame, and the mounting frame is connected to the top of the clamping rod.

[0006] Preferably, the supporting device includes a sleeve fixedly arranged on the mounting frame, a cavity is opened in the sleeve, a resistance rod is slidably arranged in the cavity, a pressure spring is arranged in the cavity, the two ends of the pressure spring are respectively connected to the resistance rod and the inner wall of the cavity, a clamping block arranged in the shape of a truncated cone is fixedly arranged on the resistance rod, a clamping column is also slidably arranged on the bottom of the sleeve, a notch is arranged on the upper top surface of the clamping column, and a resistance spring is arranged between the bottom of the clamping column and the sleeve.

[0007] Preferably, a wedge-shaped groove is provided on the clamping column, a wedge-shaped rod is slidably provided on the outer wall of the sleeve, the wedge-shaped rod abuts against the wedge-shaped groove on the clamping column, an annular stopper is fixedly provided at the end of the wedge-shaped rod, and a baffle abutting against the annular stopper is fixedly provided on the welding table.

[0008] Preferably, the grinding device includes a driving motor fixedly arranged on the welding table, a driving disk is transmitted and arranged on the main shaft of the driving motor, two grinding devices are provided, and the two grinding devices are rotatably arranged on the top of the welding table, and the two grinding devices each include a rotating rod rotatably arranged on the top of the welding table, a rotating disk is fixedly arranged on the top of the rotating rod, a belt is sleeved between the driving disk and the rotating disks on the two grinding devices, a first bevel gear is also fixedly arranged on the rotating rod, and a transmission rod is rotatably arranged on the top of the welding table, a second bevel gear meshing with the first bevel gear is arranged on the transmission rod, a large gear is fixedly arranged on the transmission rod, a grinding roller is rotatably arranged on the welding table, a small gear meshing with the large gear is arranged at one end of the grinding roller, and the grinding roller is arranged in the direction of the sleeve.

[0009] Preferably, a limiting member is also provided on the welding table, and the limiting member includes a sleeve rod sleeved on the transmission rod, and an annular groove is provided on the sleeve rod. A connecting frame is fixedly connected to the top of the pushing frame, and the connecting frame is slidably matched with the top of the welding table. The side walls of the connecting frame extend toward the directions of the two grinding devices respectively, and an annular frame is provided on the outer wall of the connecting frame and is clamped with the annular groove. An extension frame is also fixedly provided on the sleeve rod, and a transverse groove is provided on the extension frame. An articulated frame is hingedly provided on the welding table, and a limiting plate is also slidably provided on the welding table at the side of the welder, and a vertical groove is provided on the limiting plate. Pulleys are respectively provided at both ends of the articulated frame, and the pulleys at both ends of the articulated frame are respectively located in the transverse groove and the vertical groove.

[0010] Preferably, the method for using the welding device in steel pipe manufacturing comprises the following steps:

[0011] S1: When the steel pipe is welded, the two steel pipes to be welded are placed on the corresponding bearing devices on the moving device respectively, and the pushing frame is moved on the welding table under the drive of the pushing electric cylinder. When the pushing frame moves, the set rack will drive the rotating gear to rotate, and the rotating gear will drive the rotating rod to rotate. At this time, the moving frame fixed on the rotating rod will deflect outward, and the clamping rod set on the moving plate is located in the rectangular ring groove in the welding table. Then, when the moving frame deflects outward, the moving plate will move along the setting of the rectangular ring groove under the restriction of the slide groove and the rectangular ring groove, and the clamping rod on the moving plate is also connected to the mounting frame. Then, when the moving frame drives the moving plate to move, the set mounting frame will move horizontally and longitudinally on the welding table under the restriction of the limiting rail and the sliding frame, until the two mounting frames drive the bearing devices to move to the side of the welder to realize the welding operation of the two steel pipes, and the mounting frame will pass through the grinding device in the process of moving the bearing device, so that the steel pipe located on the bearing device is ground in the process of moving toward the welder.

[0012] S2: The steel pipe is placed in the sleeve in the mounting frame. When the steel pipe is in the sleeve, the end of the steel pipe will contact the resistance rod, thereby causing the resistance rod to shrink in the sleeve. During the shrinkage of the resistance rod, the clamping block provided will contact the end face of the clamping column. The clamping column is pressed down until the end face of the clamping column contacts the cross section of the clamping block provided in a truncated cone shape. Then, the resistance rod can be restricted in the sleeve, and the resistance rod is in a compressed state under the restriction of the pressure spring. When the mounting frame moves longitudinally, the mounting frame will drive the steel pipe in the sleeve to contact the grinding device, and the end face of the steel pipe will be grinded by the grinding device. After the steel pipe is grinded, the steel pipe will be driven toward the welding device under the drive of the mounting frame. When the mounting bracket moves to the side of the welding device, the annular stopper provided on the wedge-shaped rod will contact the baffle plate on the welding table. After the wedge-shaped rod contacts the baffle plate, the mounting bracket continues to move, but the wedge-shaped rod will not move under the restriction of the baffle plate. At this time, the wedge-shaped rod moves in the wedge-shaped slot on the clamping column to shrink the clamping column. The contracted clamping column will no longer restrict the resistance rod. The compressed resistance rod will drive the steel pipe toward the welding device. At this time, the two correspondingly arranged steel pipes will be connected accordingly, and the clamping force of the two steel pipes will be provided under the restriction of the pressure spring, so that the welding of the two steel pipes can be more stable under the restriction of the resistance rod when the two steel pipes are welded.

[0013] S3: When the steel pipe moves toward the welder driven by the mounting frame, the driving motor drives the driving disk of the main shaft to rotate, and the driving disk rotates through the belt to rotate the rotating disks on the two grinding devices, and the rotating disk drives the rotating rod to rotate, and the rotating rod drives the first bevel gear to rotate, and the first bevel gear drives the second bevel gear to rotate, and the second bevel gear rotates the transmission rod, and the transmission rod drives the large gear to rotate, and the large gear drives the small gear to rotate to make the grinding roller rotate rapidly, and then when the mounting frame drives the steel pipe to move longitudinally, the end of the steel pipe will contact the grinding roller, and then the end of the steel pipe will be polished under the continuous rotation of the grinding roller, and the end of the steel pipe will be polished and smooth, so that the two butt-arranged steel pipe welding parts can be effectively butted;

[0014] S4: When the pushing frame drives the two moving frames to move, the pushing frame will drive the connecting frame to move synchronously. The movement of the connecting frame will cause the ring frame to drive the sleeve rod to move, and the sleeve rod will pull the extension frame to move. When the extension frame moves, the articulated frame is deflected through the horizontal groove, and the other end of the articulated frame moves the limit plate toward the welder through the vertical groove. Then, after the two steel pipes are butt-jointed, the two limit plates will move toward the outer wall of the steel pipe. Then, when the two steel pipes are butt-jointed, the two steel pipes are limited by the two limit plates, so that the two steel pipes are welded more stably.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] When the welding operation is carried out on the steel pipe, the two steel pipes to be welded are respectively placed on the carrying devices correspondingly arranged on the moving device, and the pushing frame is moved on the welding table under the driving of the pushing electric cylinder. When the pushing frame moves, the arranged rack drives the rotating gear to rotate, and the rotating gear drives the rotating rod to rotate. At this time, the moving frame fixedly arranged on the rotating rod will deflect outward, and the clamping rod arranged on the moving plate is located in the rectangular ring groove in the welding table. Then, when the moving frame deflects outward, the moving plate will move along the setting of the rectangular ring groove under the restriction of the slide groove and the rectangular ring groove, and the clamping rod on the moving plate is also connected to the mounting frame. Then, when the moving frame drives the moving plate to move, the arranged mounting frame will move horizontally and longitudinally on the welding table under the restriction of the limiting rail and the sliding frame, until the two mounting frames drive the carrying devices to move to the side of the welding device, so as to realize the welding operation of the two steel pipes. In the process of the mounting frame moving the carrying device, it will pass through the grinding device, so that the steel pipe located on the bearing device will be ground in the process of moving toward the welding device.

[0017] In the present invention, the steel pipe is placed in the sleeve in the mounting frame. When the steel pipe is in the sleeve, the end of the steel pipe will contact the resistance rod, thereby causing the resistance rod to shrink in the sleeve. During the shrinkage of the resistance rod, the clamping block provided will contact the end face of the clamping column. After the clamping column is compressed, it is pressed down until the end face of the clamping column contacts the cross section of the clamping block provided in a truncated cone shape. Then, the resistance rod can be restricted in the sleeve, and the resistance rod is in a compressed state under the restriction of the pressure spring. When the mounting frame moves longitudinally, the mounting frame will drive the steel pipe in the sleeve to contact the grinding device, and the end face of the steel pipe will be grinded by the grinding device. After the steel pipe is grinded, the steel pipe will be driven toward the welding position under the drive of the mounting frame. The mounting bracket moves in the direction of the welder. When the mounting bracket moves to the side of the welder, the annular stopper arranged on the wedge rod will contact the baffle plate on the welding table. After the wedge rod contacts the baffle plate, the mounting bracket continues to move, but the wedge rod will not move under the restriction of the baffle plate. At this time, the wedge rod moves in the wedge-shaped groove on the clamping column to shrink the clamping column. The contracted clamping column will no longer restrict the resistance rod. The compressed resistance rod will drive the steel pipe toward the direction of the welder. At this time, the two correspondingly arranged steel pipes will be connected accordingly, and the clamping force for the two steel pipes will be provided under the restriction of the pressure spring, so that the welding of the two steel pipes can be more stable under the restriction of the resistance rod when the two steel pipes are welded.

[0018] In the present invention, when the steel pipe moves toward the direction of the welder driven by the mounting frame, the driving motor drives the driving disk of the main shaft to rotate, and the rotation of the driving disk causes the rotating disks on the two grinding devices to rotate through the belt, and the rotating disk drives the rotating rod to rotate, and the rotating rod drives the first bevel gear to rotate, and the first bevel gear drives the second bevel gear to rotate, and the second bevel gear causes the transmission rod to rotate, and the transmission rod drives the large gear to rotate, and the large gear drives the small gear to rotate to make the grinding roller rotate rapidly, and then when the mounting frame drives the steel pipe to move longitudinally, the end of the steel pipe will contact the grinding roller, and then the end of the steel pipe will be ground under the continuous rotation of the grinding roller, and the end of the steel pipe will be ground flat, so that the two butt-arranged steel pipe welding parts can be effectively butted.

[0019] In the present invention, when the pushing frame drives the two moving frames to move, the pushing frame will drive the connecting frame to move synchronously. The movement of the connecting frame will cause the ring frame to drive the sleeve rod to move, and the sleeve rod will pull the extension frame to move. When the extension frame moves, the articulated frame is deflected through the horizontal groove, and the other end of the articulated frame moves the limit plate toward the direction of the welder through the vertical groove. Then, after the two steel pipes are butt-jointed, the two limit plates will move toward the outer wall of the steel pipe. Then, when the two steel pipes are butt-jointed, the two steel pipes are limited by the two limit plates, so that the two steel pipes are welded more stably. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0021] Figure 2 It is a schematic diagram of a partial three-dimensional structure of the present invention;

[0022] Figure 3 The local three-dimensional structure of the present invention is cut away Figure 1 ;

[0023] Figure 4 It is a sectional view of the three-dimensional structure of the carrying device of the present invention;

[0024] Figure 5 It is a schematic diagram of the three-dimensional structure of the grinding device of the present invention;

[0025] Figure 6 It is a schematic diagram of a partial three-dimensional structure of the grinding device of the present invention;

[0026] Figure 7 The local three-dimensional structure of the present invention is cut away Figure 2 .

[0027] In the figure: 1, welding table; 11, welding device; 12, rectangular ring groove; 2, moving device; 21, pushing electric cylinder; 22, pushing frame; 23, rotating rod; 24, rotating gear; 25, rack; 26, moving frame; 27, slide groove; 28, moving plate; 29, clamping rod; 210, limiting track; 211, sliding frame; 212, mounting frame; 3, bearing device; 31, sleeve; 32, cavity; 33, resistance rod; 34, pressure spring; 35, clamping block; 36, clamping column; 37, resistance spring; 38, wedge clamp Groove; 39, wedge-shaped rod; 310, annular block; 311, baffle; 4, grinding device; 41, driving motor; 42, driving disk; 43, rotating rod; 44, rotating disk; 45, belt; 46, first bevel gear; 47, transmission rod; 48, second bevel gear; 49, large gear; 410, grinding roller; 411, small gear; 5, limiting member; 51, sleeve rod; 52, annular groove; 53, connecting frame; 54, ring frame; 55, extension frame; 56, horizontal groove; 57, articulated frame; 58, limiting plate; 59, vertical groove. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technical personnel in this field without creative work are within the scope of protection of the present invention.

[0029] See also Figures 1 to 7 The present invention provides a technical solution: a welding device for steel pipe manufacturing, comprising a horizontally arranged welding table 1, a moving device 2 is arranged on the top of the welding table 1, the moving device 2 is slidably matched with the top of the welding table 1, a carrying device 3 is fixedly arranged on the moving device 2, a grinding device 4 is rotatably arranged on the top of the welding table 1, two grinding devices 4 correspond to two carrying devices 3 respectively, and a welder 11 is also fixedly arranged on the top of the welding table 1.

[0030] In this embodiment, Figure 1 , Figure 2 and Figure 3As shown, a rectangular annular groove 12 is provided on the top of the welding table 1, and the moving device 2 includes a pushing electric cylinder 21 fixedly arranged on the welding table 1, and the telescopic end of the pushing electric cylinder 21 is connected to a pushing frame 22, and a rotating rod 23 is provided on the welding table 1 for corresponding rotation, and a rotating gear 24 is fixedly provided on the two rotating rods 23, and a rack 25 meshing with the rotating gear 24 is provided on both side walls of the pushing frame 22, and a moving frame 26 is fixedly connected to the rotating rod 23, and a slide groove 27 is provided on the moving frame 26, and the slide groove 27 is provided on the moving frame 26. 7 is provided with a movable plate 28 for sliding movement, and a clamping rod 29 is fixedly connected to the movable plate 28, and the clamping rod 29 is slidably matched with the rectangular ring groove 12. A limit track 210 is fixedly provided on the top of the welding table 1, and a sliding frame 211 is correspondingly provided for sliding movement on the limit track 210, and a mounting frame 212 is slidably provided on the sliding frame 211, and the mounting frame 212 is connected to the top of the clamping rod 29. When welding the steel pipes, the two steel pipes to be welded are respectively placed on the corresponding bearing devices 3 provided on the movable device 2, and the mounting frame 212 is connected to the top of the clamping rod 29. Driven by the electric cylinder 21, the push frame 22 moves on the welding table 1. When the push frame 22 moves, the rack 25 drives the rotating gear 24 to rotate, and the rotating gear 24 drives the rotating rod 23 to rotate. At this time, the mobile frame 26 fixed on the rotating rod 23 will deflect outward, and the clamping rod 29 set on the mobile plate 28 is located in the rectangular ring groove 12 in the welding table 1. When the mobile frame 26 deflects outward, the mobile plate 28 will move along the setting of the rectangular ring groove 12 under the restriction of the slide groove 27 and the rectangular ring groove 12, and the clamping rod on the mobile plate 28 29 is also connected to a mounting frame 212, and when the moving frame 26 drives the moving plate 28 to move, the mounting frame 212 will move horizontally and vertically on the welding table 1 under the restriction of the limiting rail 210 and the sliding frame 211, until the two mounting frames 212 drive the supporting device 3 to move to the side of the welder 11 to achieve the welding operation of the two steel pipes. In the process of moving the supporting device 3 by the mounting frame 212, it will pass through the grinding device 4, so that the steel pipe located on the supporting device 3 is ground during the process of moving toward the welder 11.

[0031] In this embodiment, Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the bearing device 3 includes a sleeve 31 fixedly arranged on the mounting frame 212, a cavity 32 is opened in the sleeve 31, a resisting rod 33 is slidably arranged in the cavity 32, a pressure spring 34 is arranged in the cavity 32, and the two ends of the pressure spring 34 are respectively connected to the resisting rod 33 and the inner wall of the cavity 32, a truncated cone-shaped clamping block 35 is fixedly arranged on the resisting rod 33, a clamping column 36 is slidably arranged at the bottom of the sleeve 31, a notch is arranged on the upper top surface of the clamping column 36, and a resisting spring 37 is arranged between the bottom of the clamping column 36 and the sleeve 31;

[0032] The clamping column 36 is provided with a wedge-shaped slot 38, and a wedge-shaped rod 39 is slidably provided on the outer wall of the sleeve 31. The wedge-shaped rod 39 abuts against the wedge-shaped slot 38 on the clamping column 36, and an annular stopper 310 is fixedly provided at the end of the wedge-shaped rod 39. A baffle 311 abutting against the annular stopper 310 is fixedly provided on the welding platform 1;

[0033] The steel pipe is placed in the sleeve 31 in the mounting bracket 212. When the steel pipe is in the sleeve 31, the end of the steel pipe will contact the resistance rod 33, thereby causing the resistance rod 33 to shrink in the sleeve 31. During the shrinkage of the resistance rod 33, the clamping block 35 provided will contact the end surface of the clamping column 36. The clamping column 36 is pressed down until the end surface of the clamping column 36 contacts the cross section of the clamping block 35 provided in a truncated cone shape, so that the resistance rod 33 can be restricted in the sleeve 31, and the resistance rod 33 is in a compressed state under the restriction of the pressure spring 34. When the mounting bracket 212 moves longitudinally, the mounting bracket 212 will drive the steel pipe in the sleeve 31 to contact the grinding device 4, and the end surface of the steel pipe will be ground by the grinding device 4. After the steel pipe is ground, the steel pipe will be driven by the mounting bracket 212 to face the welding device 11. When the mounting bracket 212 moves to the side of the welder 11, the annular stopper 310 provided on the wedge rod 39 will contact the baffle 311 on the welding table 1. After the wedge rod 39 contacts the baffle 311, the mounting bracket 212 continues to move, while the wedge rod 39 will not move under the restriction of the baffle 311. At this time, the wedge rod 39 moves in the wedge groove 38 on the clamping column 36 to shrink the clamping column 36. The contracted clamping column 36 will no longer restrict the resistance rod 33. The compressed resistance rod 33 will drive the steel pipe toward the direction of the welder 11. At this time, the two correspondingly arranged steel pipes will be connected accordingly, and provide a clamping force for the two steel pipes under the restriction of the pressure spring 34, so that when the two steel pipes are welded, the two steel pipes can be welded more stably under the restriction of the resistance rod 33.

[0034] In this embodiment, Figure 1 , Figure 5 and Figure 6As shown, the grinding device 4 includes a driving motor 41 fixedly arranged on the welding table 1, and a driving disk 42 is provided on the main shaft of the driving motor 41 for transmission. There are two grinding devices 4, and the two grinding devices 4 are rotatably arranged on the top of the welding table 1 accordingly. The two grinding devices 4 each include a rotating rod 43 rotatably arranged on the top of the welding table 1, and a rotating disk 44 is fixedly arranged on the top of the rotating rod 43. A belt 45 is sleeved between the driving disk 42 and the rotating disks 44 on the two grinding devices 4. A first bevel gear 46 is also fixedly arranged on the rotating rod 43, and a transmission rod 47 is also rotatably arranged on the top of the welding table 1, and a second bevel gear 48 meshing with the first bevel gear 46 is provided on the transmission rod 47, and a large gear 49 is fixedly arranged on the transmission rod 47. A grinding roller 410 is rotatably arranged on the welding table 1, and a small gear 411 meshing with the large gear 49 is provided at one end of the grinding roller 410, and the grinding roller 410 is arranged in the direction of the sleeve 31;

[0035] When the steel pipe moves toward the welder 11 driven by the mounting frame 212, the driving motor 41 drives the driving disk 42 of the main shaft to rotate, and the driving disk 42 rotates through the belt 45 to rotate the rotating disk 44 on the two grinding devices 4, and the rotating disk 44 drives the rotating rod 43 to rotate, and the rotating rod 43 drives the first bevel gear 46 to rotate, and the first bevel gear 46 drives the second bevel gear 48 to rotate, and the second bevel gear 48 rotates the transmission rod 47, and the transmission rod 47 drives the large gear 49 to rotate, and the large gear 49 drives the small gear 411 to rotate to make the grinding roller 410 rotate rapidly, and then when the mounting frame 212 drives the steel pipe to move longitudinally, the end of the steel pipe will contact the grinding roller 410, and then the end of the steel pipe will be polished under the continuous rotation of the grinding roller 410, and the end of the steel pipe will be polished and smooth, so that the two butt-arranged steel pipe welding parts can be effectively butt-jointed.

[0036] In this embodiment, Figure 1 , Figure 6 and Figure 7As shown, the welding table 1 is also provided with a limiting member 5, which includes a sleeve connecting rod 51 sleeved on the transmission rod 47, and a ring groove 52 is provided on the sleeve connecting rod 51. A connecting frame 53 is fixedly connected to the top of the pushing frame 22, and the connecting frame 53 is slidably matched with the top of the welding table 1. The side walls of the connecting frame 53 extend toward the directions of the two grinding devices 4 respectively, and the outer wall of the connecting frame 53 is provided with a ring frame 54 engaged with the ring groove 52. An extension frame 55 is also fixedly provided on the sleeve connecting rod 51, and a transverse groove 56 is provided on the extension frame 55. An articulated frame 57 is hingedly provided on the welding table 1. A limiting plate 58 is also slidably provided on the side of the welding device 11 on the welding table 1, and a vertical groove 59 is provided on the limiting plate 58. Pulleys are respectively provided at both ends of the articulated frame 57, and the pulleys at both ends of the articulated frame 57 are respectively located in the transverse groove 56 and the vertical groove 59;

[0037] When the pushing frame 22 drives the two moving frames 26 to move, the pushing frame 22 will drive the connecting frame 53 to move synchronously. The movement of the connecting frame 53 will cause the ring frame 54 to drive the sleeve rod 51 to move, and the sleeve rod 51 will pull the extension frame 55 to move. When the extension frame 55 moves, the horizontal groove 56 deflects the articulated frame 57, and the other end of the articulated frame 57 moves the limit plate 58 toward the direction of the welder 11 through the vertical groove 59. Then, after the two steel pipes are butt-jointed, the two limit plates 58 will move toward the outer wall of the steel pipe. Then, when the two steel pipes are butt-jointed, the two steel pipes are limited by the two limit plates 58, so that the two steel pipes are welded more stably.

[0038] The use method and advantages of the present invention: The use method of the welding device in the manufacture of steel pipes, the working process is as follows:

[0039] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 As shown:

[0040] S1: When welding the steel pipes, the two steel pipes to be welded are placed on the corresponding carrying devices 3 on the moving device 2, and the pushing frame 22 is moved on the welding table 1 under the drive of the pushing electric cylinder 21. When the pushing frame 22 moves, the rack 25 drives the rotating gear 24 to rotate, and the rotating gear 24 drives the rotating rod 23 to rotate. At this time, the moving frame 26 fixed on the rotating rod 23 will deflect outward, and the clamping rod 29 set on the moving plate 28 is located in the rectangular annular groove 12 in the welding table 1. Then, when the moving frame 26 deflects outward, the moving plate 28 will be restricted by the slide groove 27 and the rectangular annular groove 12. The movable plate 28 is moved along the rectangular annular groove 12, and the clamping rod 29 on the movable plate 28 is also connected to the mounting frame 212. When the movable frame 26 drives the movable plate 28 to move, the mounting frame 212 is restricted by the limiting rail 210 and the sliding frame 211 and moves horizontally and vertically on the welding table 1 until the two mounting frames 212 drive the bearing device 3 to move to the side of the welder 11 to achieve the welding operation of the two steel pipes. In the process of the mounting frame 212 moving the bearing device 3, it passes through the grinding device 4, so that the steel pipe on the bearing device 3 is ground in the process of moving toward the welder 11.

[0041] S2: The steel pipe is placed in the sleeve 31 in the mounting bracket 212. When the steel pipe is in the sleeve 31, the end of the steel pipe will contact the abutment rod 33, thereby causing the abutment rod 33 to shrink in the sleeve 31. During the shrinkage of the abutment rod 33, the clamping block 35 provided will contact the end surface of the clamping column 36. The clamping column 36 is pressed down until the end surface of the clamping column 36 contacts the cross section of the clamping block 35 provided in a truncated cone shape. The abutment rod 33 can be restricted in the sleeve 31, and the abutment rod 33 is in a compressed state under the restriction of the pressure spring 34. When the mounting bracket 212 moves longitudinally, the mounting bracket 212 will drive the steel pipe in the sleeve 31 to contact the grinding device 4. The end surface of the steel pipe is grinded by the grinding device 4. After the steel pipe is grinded, the steel pipe will be driven toward the welding device 1 under the drive of the mounting bracket 212. 1, when the mounting bracket 212 moves to the side of the welder 11, the annular stopper 310 provided on the wedge rod 39 will contact the baffle 311 on the welding table 1. After the wedge rod 39 contacts the baffle 311, the mounting bracket 212 continues to move, while the wedge rod 39 will not move under the restriction of the baffle 311. At this time, the wedge rod 39 moves in the wedge-shaped slot 38 on the clamping column 36 to shrink the clamping column 36. The clamping column 36 after shrinkage will no longer restrict the abutment rod 33. The abutment rod 33 after being compressed will drive the steel pipe toward the direction of the welder 11. At this time, the two correspondingly arranged steel pipes will be connected correspondingly, and the clamping force for the two steel pipes will be provided under the restriction of the pressure spring 34, so that the welding of the two steel pipes can be more stable under the restriction of the abutment rod 33 when the two steel pipes are welded.

[0042] S3: When the steel pipe moves toward the direction of the welder 11 driven by the mounting frame 212, the driving motor 41 drives the driving disk 42 of the main shaft to rotate, and the driving disk 42 rotates through the belt 45 to rotate the rotating disks 44 on the two grinding devices 4, and the rotating disk 44 drives the rotating rod 43 to rotate, and the rotating rod 43 drives the first bevel gear 46 to rotate, and the first bevel gear 46 drives the second bevel gear 48 to rotate, and the second bevel gear 48 rotates the transmission rod 47, and the transmission rod 47 drives the large gear 49 to rotate, and the large gear 49 drives the small gear 411 to rotate to make the grinding roller 410 rotate rapidly, and then when the mounting frame 212 drives the steel pipe to move longitudinally, the end of the steel pipe will contact the grinding roller 410, and then the end of the steel pipe will be polished under the continuous rotation of the grinding roller 410, and the end of the steel pipe will be polished and smooth, so that the two butt-arranged steel pipe welding parts can be effectively butted;

[0043] S4: When the pushing frame 22 drives the two moving frames 26 to move, the pushing frame 22 will drive the connecting frame 53 to move synchronously. The movement of the connecting frame 53 will cause the ring frame 54 to drive the sleeve rod 51 to move. The sleeve rod 51 will pull the extension frame 55 to move. When the extension frame 55 moves, the horizontal groove 56 deflects the articulated frame 57. The other end of the articulated frame 57 moves the limit plate 58 toward the direction of the welder 11 through the vertical groove 59. Then, after the two steel pipes are butt-jointed, the two limit plates 58 will move toward the outer wall of the steel pipe. Then, when the two steel pipes are butt-jointed, the two steel pipes are limited by the two limit plates 58, so that the two steel pipes are welded more stably.

[0044] The above shows and describes the basic principles, main features and advantages of the present invention. Technical personnel in this industry should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A welding device for steel pipe manufacturing, characterized in that: The invention comprises a welding platform (1) arranged horizontally, a moving device (2) being arranged on the top of the welding platform (1), the moving device (2) being slidably matched with the top of the welding platform (1), a carrying device (3) being fixedly arranged on the moving device (2) in correspondence, a grinding device (4) being rotatably arranged on the top of the welding platform (1), the two grinding devices (4) respectively corresponding to the two carrying devices (3), and a welder (11) being fixedly arranged on the top of the welding platform (1); The top of the welding table (1) is provided with a rectangular annular groove (12), the moving device (2) comprises a driving electric cylinder (21) fixedly arranged on the welding table (1), the telescopic end of the driving electric cylinder (21) is connected to a driving frame (22), a rotating rod (23) is correspondingly provided on the welding table (1), a rotating gear (24) is fixedly provided on the two rotating rods (23), a rack (25) meshing with the rotating gear (24) is provided on both side walls of the driving frame (22), and a moving frame (26) is fixedly connected to the rotating rod (23). The movable frame (26) is provided with a slide groove (27), a movable plate (28) is slidably arranged in the slide groove (27), a clamping rod (29) is fixedly connected to the movable plate (28), the clamping rod (29) is slidably matched with the rectangular ring groove (12), a limiting track (210) is fixedly arranged on the top of the welding table (1), a sliding frame (211) is slidably arranged on the limiting track (210), a mounting frame (212) is slidably arranged on the sliding frame (211), and the mounting frame (212) is connected to the top of the clamping rod (29); The bearing device (3) comprises a sleeve (31) fixedly arranged on the mounting frame (212), a cavity (32) being provided in the sleeve (31), a resisting rod (33) being slidably arranged in the cavity (32), a pressure spring (34) being arranged in the cavity (32), two ends of the pressure spring (34) being respectively connected to the resisting rod (33) and the inner wall of the cavity (32), a truncated cone-shaped clamping block (35) being fixedly arranged on the resisting rod (33), a clamping column (36) being slidably arranged at the bottom of the sleeve (31), a notch being arranged on the upper top surface of the clamping column (36), and a resisting spring (37) being arranged between the bottom of the clamping column (36) and the sleeve (31); The clamping column (36) is provided with a wedge-shaped groove (38), the outer wall of the sleeve (31) is slidably provided with a wedge-shaped rod (39), the wedge-shaped rod (39) abuts against the wedge-shaped groove (38) on the clamping column (36), an annular stopper (310) is fixedly provided at the end of the wedge-shaped rod (39), and a baffle (311) abutting against the annular stopper (310) is fixedly provided on the welding platform (1).

2. A welding device for steel pipe manufacturing according to claim 1, characterized in that: The grinding device (4) comprises a driving motor (41) fixedly arranged on the welding table (1), a driving disc (42) being transmission-arranged on the main shaft of the driving motor (41), two grinding devices (4) being arranged rotatably on the top of the welding table (1) in correspondence, the two grinding devices (4) each comprising a rotating rod (43) rotatably arranged on the top of the welding table (1), a rotating disc (44) being fixedly arranged on the top of the rotating rod (43), a belt (44) being sleeved between the driving disc (42) and the rotating discs (44) on the two grinding devices (4), 45), a first bevel gear (46) is fixedly provided on the rotating rod (43), a transmission rod (47) is rotatably provided on the top of the welding platform (1), a second bevel gear (48) meshing with the first bevel gear (46) is provided on the transmission rod (47), a large gear (49) is fixedly provided on the transmission rod (47), a grinding roller (410) is rotatably provided on the welding platform (1), a small gear (411) meshing with the large gear (49) is provided at one end of the grinding roller (410), and the grinding roller (410) is arranged in the direction of the sleeve (31).

3. A welding device for steel pipe manufacturing according to claim 2, characterized in that: The welding table (1) is also provided with a limit member (5), the limit member (5) comprising a sleeve rod (51) sleeved on the transmission rod (47), the sleeve rod (51) being provided with an annular groove (52), the top of the pushing frame (22) being fixedly connected with a connecting frame (53), the connecting frame (53) being slidably matched with the top of the welding table (1), the side walls of the connecting frame (53) respectively extending in the direction of the two grinding devices (4), and the outer wall of the connecting frame (53) being provided with an annular frame (54) clamped with the annular groove (52).

4. A welding device for steel pipe manufacturing according to claim 3, characterized in that: An extension frame (55) is fixedly arranged on the sleeve rod (51), and a transverse groove (56) is provided on the extension frame (55). An articulated frame (57) is hingedly arranged on the welding platform (1). A limit plate (58) is slidably arranged on the welding platform (1) beside the welder (11), and a vertical groove (59) is provided on the limit plate (58). Pulleys are respectively arranged at both ends of the articulated frame (57), and the pulleys at both ends of the articulated frame (57) are respectively located in the transverse groove (56) and the vertical groove (59).

5. The method for using the welding device in steel pipe manufacturing according to claim 4 comprises the following steps: S1: When welding steel pipes, two steel pipes to be welded are placed on the corresponding bearing devices (3) on the moving device (2), and the pushing frame (22) is moved on the welding table (1) under the drive of the pushing electric cylinder (21). When the pushing frame (22) moves, the rack (25) drives the rotating gear (24) to rotate, and the rotating gear (24) drives the rotating rod (23) to rotate. At this time, the moving frame (26) fixed on the rotating rod (23) deflects outward, and the clamping rod (29) provided on the moving plate (28) is located in the rectangular annular groove (12) in the welding table (1). When the moving frame (26) deflects outward, the moving plate (28) moves between the slide groove (27) and the rectangular annular groove (12). The movable plate (28) is configured to move along the rectangular annular groove (12) under the restriction, and the clamping rod (29) on the movable plate (28) is also connected to the mounting frame (212), and when the movable frame (26) drives the movable plate (28) to move, the mounting frame (212) will move horizontally and vertically on the welding table (1) under the restriction of the limiting rail (210) and the sliding frame (211), until the two mounting frames (212) drive the bearing device (3) to move to the side of the welder (11), and the welding operation of the two steel pipes can be realized. In the process of moving the bearing device (3), the mounting frame (212) passes through the grinding device (4), so that the steel pipe on the bearing device (3) is ground in the process of moving toward the welder (11); S2: The steel pipe is placed in the sleeve (31) in the mounting frame (212). When the steel pipe is in the sleeve (31), the end of the steel pipe will contact the abutment rod (33), thereby causing the abutment rod (33) to shrink in the sleeve (31). During the shrinkage of the abutment rod (33), the clamping block (35) provided will contact the end surface of the clamping column (36). The clamping column (36) is pressed downward until the end surface of the clamping column (36) and the cross section of the clamping block (35) provided in a truncated cone shape are aligned. After the surfaces are in contact, the abutment rod (33) can be restricted in the sleeve (31), and the abutment rod (33) is in a compressed state under the restriction of the pressure spring (34). When the mounting frame (212) drives the steel pipe in the sleeve (31) to move longitudinally, the mounting frame (212) drives the steel pipe in the sleeve (31) to contact the grinding device (4), and the end surface of the steel pipe is ground by the grinding device (4). After the steel pipe is ground, the mounting frame (212) drives the steel pipe to move toward the welding device ( 11), when the mounting frame (212) moves to the side of the welder (11), the annular stopper (310) provided on the wedge-shaped rod (39) contacts the baffle (311) on the welding table (1), and after the wedge-shaped rod (39) contacts the baffle (311), the mounting frame (212) continues to move, while the wedge-shaped rod (39) does not move under the restriction of the baffle (311), and the wedge-shaped rod (39) is in the wedge-shaped slot (38) on the clamping column (36). ) moves in the inner part of the clamping column (36) so as to shrink the clamping column (36). After shrinking, the clamping column (36) will no longer restrict the abutting rod (33). The abutting rod (33) under pressure will drive the steel pipe to push in the direction of the welding device (11). At this time, the two correspondingly arranged steel pipes will be connected correspondingly, and the clamping force for the two steel pipes will be provided under the restriction of the pressure spring (34). Therefore, when welding the two steel pipes, the welding of the two steel pipes can be more stable under the restriction of the abutting rod (33). S3: When the steel pipe moves toward the welding device (11) driven by the mounting frame (212), the driving motor (41) drives the driving disk (42) of the main shaft to rotate, and the driving disk (42) rotates through the belt (45) to rotate the rotating disks (44) on the two grinding devices (4), and the rotating disk (44) drives the rotating rod (43) to rotate, and the rotating rod (43) drives the first bevel gear (46) to rotate, and the first bevel gear (46) drives the second bevel gear (48) to rotate, and the second bevel gear (48) ) will cause the transmission rod (47) to rotate, the transmission rod (47) drives the large gear (49) to rotate, the large gear (49) drives the small gear (411) to rotate, causing the grinding roller (410) to rotate rapidly, and then when the mounting frame (212) drives the steel pipe to move longitudinally, the end of the steel pipe will contact the grinding roller (410), and then the end of the steel pipe will be polished under the continuous rotation of the grinding roller (410), so that the end of the steel pipe can be polished and smooth, so that the two butt-jointed steel pipe welding parts can be effectively butted; S4: When the push frame (22) drives the two moving frames (26) to move, the push frame (22) drives the connecting frame (53) to move synchronously. The movement of the connecting frame (53) causes the ring frame (54) to drive the sleeve rod (51) to move. The sleeve rod (51) pulls the extension frame (55) to move. When the extension frame (55) moves, the articulated frame (57) is deflected through the transverse groove (56). The other end of the articulated frame (57) moves the limiting plate (58) toward the direction of the welder (11) through the vertical groove (59). When the two steel pipes are butt-jointed, the two limiting plates (58) move toward the outer wall of the steel pipe. When the two steel pipes are butt-jointed, the two limiting plates (58) limit the two steel pipes, so that the two steel pipes are more stable when welded.

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