Steel pipe flanging machine

Abstract

The steel pipe flanging machine comprises a workbench, and supporting legs are fixedly connected to the positions, close to the four corners, of the bottom of the workbench; through mutual cooperation of a rectangular plate, a first rotating shaft, a chain wheel, a second rotating shaft, a chain, a limiting block, a first connecting block, a second L-shaped rod, a second connecting block, a straight rod, a third L-shaped rod, a barrier strip, a transmission gear and a fixed rack plate, to-be-machined steel pipes can be conveniently fed, and the flanging efficiency of the device is improved; through mutual cooperation of a servo motor, a transmission belt, a mounting plate, a cross rod, a driving bevel gear, a driven bevel gear, a round rod, a rotating gear, a movable rack plate, a limiting plate, a connecting shaft, a first L-shaped rod and an arc-shaped clamping plate, a steel pipe can be stably fixed, and the flanging effect is improved; and through mutual cooperation of a fixing block, a threaded pipe, a threaded rod, a sliding block and an inserting block, the flanging base can be replaced conveniently, and the working intensity of workers is relieved.

Description

Technical Field

[0001] This invention relates to the field of steel pipe processing technology, specifically a steel pipe flanging machine. Background Technology

[0002] Steel pipes are made of steel alloy materials. During the production and processing of steel pipes, in order to ensure the sealing when connecting multiple steel pipes, it is necessary to flare both ends of the steel pipes.

[0003] When existing steel pipes are flanging, they need to be fixed, but the existing equipment cannot ensure the stability of the steel pipes, resulting in poor flanging effect. At the same time, the flanging head of the existing equipment is prone to damage during long-term flanging operations, but it is not easy to replace. This increases the workload of the workers. In addition, the steel pipes are usually fed manually, which reduces the flanging efficiency of the equipment. Summary of the Invention

[0004] The technical problem solved by this invention is to overcome the defects of the prior art and provide a steel pipe flanging machine.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a steel pipe flanging machine, comprising a workbench, with support legs fixedly connected to the bottom of the workbench near its four corners; an L-shaped plate fixedly connected to the top of the workbench near its right side; a control panel fixedly connected to the right side of the L-shaped plate near its bottom; an arc-shaped frame extending through the bottom of the L-shaped plate near its left side; two first rectangular openings positioned vertically on the left side of the arc-shaped frame near its bottom; a fixed box fixedly connected to the top of the workbench near its center; a baffle fixedly connected to the top of the fixed box near its left side; a protective pad fixedly connected to the top of the fixed box; a second rectangular opening on the right side near its center; a fixing mechanism within the fixed box; and an electric telescopic rod fixedly connected to the left side of the control panel near its bottom. The electric telescopic rod has a sliding plate fixedly connected to its left end, and a first slider fixedly connected to the bottom of the sliding plate. A first groove is provided at the top of the worktable near the middle position, and the first slider is movably connected to the inner cavity of the first groove. A connecting rod is fixedly connected to the left side of the sliding plate near the top, and a connecting seat is fixedly connected to the left end of the connecting rod. A flange seat is provided on the left side of the connecting seat, and a locking block is fixedly connected to the middle position of the right side of the flange seat. A slot is provided at the middle position of the left side of the connecting seat, and the locking block is inserted into the inner cavity of the slot. Slots are provided at the top and bottom near the middle position of the locking block. A third rectangular opening is provided at the top and bottom near the left side of the connecting seat. A disassembly mechanism is provided in the inner cavity of both third rectangular openings. A flange head is fixedly connected to the left side of the flange seat, and a feeding mechanism is provided at the top of the worktable near the left side.

[0006] Preferably, the disassembly mechanism includes a fixing block, which is fixedly connected to the inner cavity of the third rectangular opening at the bottom near the bottom. A first bearing is fixedly connected to the top of the fixing block. A threaded tube is provided through the inner cavity of the first bearing. A knob is fixedly connected to the bottom end of the threaded tube. A threaded rod is movably connected to the inner cavity of the threaded tube. A sliding block is fixedly connected to the top end of the threaded rod. Second sliders are fixedly connected to both sides of the sliding block. Second sliding grooves are provided on both sides of the inner cavity of the third rectangular opening near the top. Two second sliders are movably connected to the inner cavities of adjacent second sliding grooves. An insert is fixedly connected to the top of the sliding block and is inserted into the inner cavity of the slot.

[0007] Preferably, the fixing mechanism includes a servo motor, which is fixedly connected to the left side of the inner cavity of the fixing box near the middle position. A first single-grooved wheel is fixedly connected to the end of the power output shaft of the servo motor. A second single-grooved wheel is provided on the right side of the first single-grooved wheel. A transmission belt is provided between the second single-grooved wheel and the first single-grooved wheel. The second single-grooved wheel and the first single-grooved wheel are connected by transmission belt. A crossbar is provided through the rear center of the second single-grooved wheel. Two mounting plates are fixedly connected to the left side of the inner cavity of the fixing box near the middle position. The two mounting plates are second bearings. The front and rear ends of the crossbar respectively pass through the inner cavity of the adjacent second bearings and are fixedly connected to driving bevel gears. Both driving bevel gears are meshed with driven bevel gears on their right sides. A round rod is fixedly connected to the right center of both driven bevel gears.

[0008] Preferably, a connecting plate is fixedly connected to the right side of each of the two mounting plates that are far apart from each other, and a third bearing is fixedly connected to the right side of each of the two connecting plates that are far apart from each other. The right ends of the two round rods pass through the inner cavities of the adjacent third bearings and are fixedly connected to rotating gears. A limit plate is fixedly connected to the right side of the inner cavity of the fixed box.

[0009] Preferably, the bottoms of the two rotating gears are engaged with movable rack plates, and the bottoms of the two movable rack plates are fixedly connected to third sliders on opposite sides. The top of the limiting plate has a third sliding groove, and the two third sliders are movably connected to the inner cavity of the third sliding groove. The right sides of the two rotating gears are fixedly connected to connecting shafts near the middle position. The right ends of the two connecting shafts penetrate the inner cavity of the second rectangular opening and are fixedly connected to rectangular blocks. The tops of the two rectangular blocks are fixedly connected to first L-shaped rods, and the tops of the two first L-shaped rods are fixedly connected to arc-shaped clamping plates.

[0010] Preferably, the feeding mechanism includes a fixed rack plate, which is fixedly connected to the rear side of the sliding plate near the bottom. Several rectangular plates are fixedly connected to the top of the worktable near the left side. Sprockets are provided on the opposite sides of the two rectangular plates on the left and the two rectangular plates on the right. A second rotating shaft and a first rotating shaft are respectively passed through the front center of each of the two sprockets. A fourth bearing is fixedly connected to each of the rectangular plates. The front ends of the second rotating shaft and the first rotating shaft are respectively inserted into the inner cavity of the adjacent fourth bearing. The rear end of the first rotating shaft is inserted into the inner cavity of the adjacent fourth bearing. The rear end of the second rotating shaft passes through the inner cavity of the adjacent fourth bearing and is fixedly connected to a transmission gear. The transmission gear and the fixed rack plate are meshed with each other. A chain is provided between the two sprockets, and the two sprockets are connected by chain drive.

[0011] Preferably, movable shafts are fixedly connected to the front and rear sides of the chain near the left and right sides, respectively. Mounting blocks are fixedly connected to the ends of both movable shafts. A first connecting block and a second connecting block are fixedly connected to the tops of the two mounting blocks, respectively. A limiting block is fixedly connected to the bottom of the left mounting block, and a fourth slider is fixedly connected to the bottom of the limiting block. A fourth sliding groove is formed on the top of the worktable near the left side, and the fourth slider is movably connected to the inner cavity of the fourth sliding groove. A second L-shaped rod is fixedly connected to the bottom of the first connecting block, and the right side of the second L-shaped rod... A first straight plate is fixedly connected to the end of the second connecting block. A through hole is opened on the left side of the second connecting block. A straight rod is inserted through the inner cavity of the through hole, and support blocks are fixedly connected to both ends of the straight rod. The two support blocks are fixedly connected to adjacent rectangular plates respectively. A third L-shaped rod is fixedly connected to the top of the second connecting block near the rear side. A second straight plate is fixedly connected to the right end of the third L-shaped rod. A stop bar is fixedly connected to the right side of both the first straight plate and the second straight plate. The stop bar at the top penetrates the inner cavity of the adjacent first rectangular opening, and the stop bar at the bottom is located in the inner cavity of the first rectangular opening.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. The present invention facilitates the loading of steel pipes to be processed and improves the flanging efficiency of the device by the cooperation of the following components: rectangular plate, first rotating shaft, sprocket, second rotating shaft, chain, limiting block, first connecting block, second L-shaped rod, second connecting block, straight rod, third L-shaped rod, stop bar, transmission gear and fixed rack plate.

[0014] 2. This invention utilizes the cooperation of components such as a servo motor, transmission belt, mounting plate, crossbar, driving bevel gear, driven bevel gear, round rod, rotating gear, moving rack plate, limiting plate, connecting shaft, first L-shaped rod, and arc-shaped clamping plate to fix the steel pipe stably and improve the flanging effect.

[0015] 3. The present invention, through the cooperation of components such as fixed block, threaded tube, threaded rod, sliding block and insert block, enables two sliding blocks to move to opposite sides under the limitation of adjacent second slide groove and second slider, which facilitates the replacement of flange seat and reduces the workload of workers. Attached Figure Description

[0016] Figure 1 This is a cross-sectional view of the present invention;

[0017] Figure 2 This is a partial top view of the present invention;

[0018] Figure 3 This is a partial top sectional view of the fixing box of the present invention;

[0019] Figure 4This is a partial side view of the fixing box of the present invention;

[0020] Figure 5 for Figure 1 Enlarged view of point A in the middle;

[0021] Figure 6 for Figure 1 Enlarged view of point B in the middle;

[0022] Figure 7 for Figure 3 A magnified view of point C in the middle.

[0023] Numbered components in the diagram: 1. Workbench; 2. Control panel; 3. Fixing box; 4. L-shaped plate; 5. Arc frame; 6. Electric telescopic rod; 7. Sliding plate; 8. Connecting rod; 9. Connecting seat; 10. Flanged seat; 11. Fixing block; 12. Threaded pipe; 13. Threaded rod; 14. Sliding block; 15. Insert block; 16. Servo motor; 17. Transmission belt; 18. Mounting plate; 19. Crossbar; 20. Driving bevel gear; 21. Driven bevel gear; 22. Circular... 23. Rotary gear; 24. Moving rack plate; 25. Limiting plate; 26. Connecting shaft; 27. First L-shaped rod; 28. Arc-shaped clamping plate; 29. ​​Rectangular plate; 30. First rotating shaft; 31. Sprocket; 32. Second rotating shaft; 33. Chain; 34. Limiting block; 35. First connecting block; 36. Second L-shaped rod; 37. Second connecting block; 38. Straight rod; 39. Third L-shaped rod; 40. Stop bar; 41. Transmission gear; 42. Fixed rack plate. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] Please see Figure 1-7This invention provides a technical solution: a steel pipe flanging machine, including a workbench 1. Support legs are fixedly connected to the bottom of the workbench 1 near its four corners. An L-shaped plate 4 is fixedly connected to the top of the workbench 1 near its right side. A control panel 2 is fixedly connected to the right side of the L-shaped plate 4 near its bottom. An arc-shaped frame 5 is provided through the bottom of the L-shaped plate 4 near its left side. Two first rectangular openings are provided on the left side of the arc-shaped frame 5 near its bottom, arranged vertically. A fixed box 3 is fixedly connected to the top of the workbench 1 near its center. A baffle is fixedly connected to the top of the fixed box 3 near its left side. A protective pad is fixedly connected to the top of the fixed box 3. A second rectangular opening is provided on the right side of the fixed box 3 near its center. A fixing mechanism is provided inside the fixed box 3. An electric telescopic rod 6 is fixedly connected to the left side of the control panel 2 near its bottom. A sliding plate 7 is fixedly connected to the left end of the telescopic rod 6. A first slider is fixedly connected to the bottom of the sliding plate 7. A first groove is opened at the top of the worktable 1 near the middle position. The first slider is movably connected to the inner cavity of the first groove. A connecting rod 8 is fixedly connected to the left side of the sliding plate 7 near the top position. A connecting seat 9 is fixedly connected to the left end of the connecting rod 8. A flange seat 10 is provided on the left side of the connecting seat 9. A locking block is fixedly connected at the middle position of the right side of the flange seat 10. A slot is opened at the middle position of the left side of the connecting seat 9. The locking block is inserted into the inner cavity of the slot. Slots are opened at the top and bottom near the middle position of the locking block. A third rectangular opening is opened at the top and bottom near the left side of the connecting seat 9. A disassembly mechanism is provided in the inner cavity of both third rectangular openings. A flange head is fixedly connected to the left side of the flange seat 10. A feeding mechanism is provided at the top of the worktable 1 near the left side.

[0026] The disassembly mechanism includes a fixing block 11, which is fixedly connected to the inner cavity of the third rectangular opening at the bottom near the bottom. A first bearing is fixedly connected to the top of the fixing block 11. A threaded tube 12 is provided through the inner cavity of the first bearing. A knob is fixedly connected to the bottom end of the threaded tube 12. A threaded rod 13 is movably connected to the inner cavity of the threaded tube 12. A sliding block 14 is fixedly connected to the top end of the threaded rod 13. Second sliders are fixedly connected to both the left and right sides of the sliding block 14. Second slide grooves are provided on both the left and right sides of the inner cavity of the third rectangular opening near the top. Two second sliders are movably connected to the inner cavities of adjacent second slide grooves. An insert block 15 is fixedly connected to the top of the sliding block 14 and is inserted into the inner cavity of the slot.

[0027] The fixing mechanism includes a servo motor 16, which is fixedly connected to the left side of the inner cavity of the fixing box 3 near the middle position. A first single-grooved wheel is fixedly connected to the end of the power output shaft of the servo motor 16. A second single-grooved wheel is provided on the right side of the first single-grooved wheel. A transmission belt 17 is provided between the second single-grooved wheel and the first single-grooved wheel, and the second single-grooved wheel and the first single-grooved wheel are connected by transmission belt 17. A crossbar 19 is provided through the rear center of the second single-grooved wheel. Two mounting plates 18 are fixedly connected to the left side of the inner cavity of the fixing box 3 near the middle position. The two mounting plates 18 are second bearings. The front and rear ends of the crossbar 19 pass through the inner cavities of the adjacent second bearings and are fixedly connected to the driving bevel gears 20. The right sides of the two driving bevel gears 20 are meshed with driven bevel gears 21. The right center of the right side of the two driven bevel gears 21 is fixedly connected to the round rods 22. The two mounting plates 18 are located on opposite sides near the center of the inner cavity. A connecting plate is fixedly connected to the right side of each of the two connecting plates. A third bearing is fixedly connected to the right side of each of the two connecting plates, near the side that is furthest from each other. The right ends of the two round rods 22 pass through the inner cavity of the adjacent third bearings and are fixedly connected to the rotating gears 23. A limit plate 25 is fixedly connected to the inner cavity of the fixed box 3 near the right side. The bottom of each of the two rotating gears 23 is meshed with a movable rack plate 24. A third slider is fixedly connected to the bottom of each of the two movable rack plates 24, near the side that is furthest from each other. A third groove is opened on the top of the limit plate 25. The two third sliders are movably connected to the inner cavity of the third groove. A connecting shaft 26 is fixedly connected to the right side of each of the two rotating gears 23, near the middle position. The right ends of the two connecting shafts 26 pass through the inner cavity of the second rectangular opening and are fixedly connected to the rectangular blocks. A first L-shaped rod 27 is fixedly connected to the top of each of the two rectangular blocks. An arc-shaped clamping plate 28 is fixedly connected to the top of each of the two first L-shaped rods 27.

[0028] The feeding mechanism includes a fixed rack plate 42, which is fixedly connected to the rear side of the sliding plate 7 near the bottom. Several rectangular plates 29 are fixedly connected to the top of the worktable 1 near the left side. Sprockets 31 are provided on opposite sides of the two left rectangular plates 29 and the two right rectangular plates 29. A second rotating shaft 32 and a first rotating shaft 30 are respectively threaded through the center of the front side of each of the two sprockets 31. Fourth bearings are fixedly connected to the rectangular plates 29. The second rotating shaft 32 and the first rotating shaft 30... The front ends of the first rotating shaft 30 are inserted into the inner cavity of the adjacent fourth bearing, and the rear end of the second rotating shaft 32 is inserted into the inner cavity of the adjacent fourth bearing. The rear end of the second rotating shaft 32 passes through the inner cavity of the adjacent fourth bearing and is fixedly connected to a transmission gear 41. The transmission gear 41 and the fixed rack plate 42 are meshed with each other. A chain 33 is provided between the two sprockets 31, and the two sprockets 31 are connected by transmission through the chain 33. Movable shafts are fixedly connected to the front and rear sides of the chain 33 near the left and right sides, respectively. Mounting blocks are fixedly connected to the ends of the two movable shafts. A first connecting block 35 and a second connecting block 37 are fixedly connected to the top of the two mounting blocks, respectively. A limit block 34 is fixedly connected to the bottom of the left mounting block. A fourth slider is fixedly connected to the bottom of the limit block 34. A fourth slide groove is opened on the top of the worktable 1 near the left side. The fourth slider is movably connected to the inner cavity of the fourth slide groove. A second L-shaped rod 36 is fixedly connected to the bottom of the first connecting block 35. A first straight plate is fixedly connected to the right end of the second L-shaped rod 36. A second connecting block 37 is opened on the left side. There is a through hole, and a straight rod 38 is inserted through the inner cavity of the through hole. Both ends of the straight rod 38 are fixedly connected to support blocks. The two support blocks are fixedly connected to the adjacent rectangular plates 29 respectively. A third L-shaped rod 39 is fixedly connected to the top of the second connecting block 37 near the rear side. A second straight plate is fixedly connected to the right end of the third L-shaped rod 39. A stop strip 40 is fixedly connected to the right side of both the first straight plate and the second straight plate. The top stop strip 40 penetrates the inner cavity of the adjacent first rectangular opening, and the bottom stop strip 40 is located in the inner cavity of the first rectangular opening.

[0029] Working Principle: In use, several steel pipes are placed inside the arc-shaped frame 5, with one steel pipe placed on top of the fixed box 3 beforehand. The servo motor 16 is then started via the control panel 2. The rotation of the servo motor 16's power output shaft drives the first single-grooved pulley fixed to the end of the servo motor 16's power output shaft to rotate. This, in turn, causes the second single-grooved pulley to rotate via the transmission belt 17, which in turn rotates the crossbar 19. This, in turn, causes the driving bevel gears 20 fixed at both ends of the crossbar 19 to rotate, which in turn causes the adjacent driven bevel gears 21 to rotate. The two driven bevel gears 21 rotate in opposite directions. Simultaneously, the rotation of the two driven bevel gears 21 is driven by the round rods 22 fixed to the adjacent driven bevel gears 21. Rotating gear 23 rotates, causing the movable rack plate 24, which meshes with the adjacent rotating gear 23, to move to the opposite side under the limitation of the adjacent third slide groove and the third slider. The connecting shaft 26 fixed to the adjacent movable rack plate 24 causes the adjacent rectangular block to move to the opposite side. The first L-shaped rod 27 fixed to the adjacent rectangular block causes the adjacent arc-shaped clamping plate 28 to move to the opposite side to limit the steel pipe. Then, the electric telescopic rod 6 is activated via the control panel 2. The electric telescopic rod 6 pushes the sliding plate 7 to move to the left under the limitation of the first slide groove and the first slider. The flanging head fixed to the flanging seat 10 flangs the steel pipe. The electric telescopic rod 6 is then shortened via the control panel 2 and adjusted to a suitable position. After positioning, the electric telescopic rod 6 is turned off via control panel 2. When the flange seat 10 needs to be replaced, rotate the two knobs to rotate the threaded tube 12 fixed on the adjacent knobs. The threaded rod 13, which moves in the inner cavity of the adjacent threaded tube 12, moves the adjacent sliding block 14 away from each other under the limit of the adjacent second slide groove and the second slider. This moves the insert block 15 fixed on the adjacent sliding block 14 away from the inner cavity of the adjacent slot, making it easier to replace the flange seat 10 and reducing the workload of the workers. When the sliding plate 7 moves to the left, the transmission gear 41 meshing with it is rotated by the fixed rack plate 42 fixed on the sliding plate 7, which in turn rotates the adjacent second rotating shaft 32, thereby rotating the sprocket 31. Driven by the chain 33, the sprocket 31 on the right side rotates. With the connection of the adjacent movable shafts, the adjacent mounting blocks move to the opposite side. Through the connection of the first connecting block 35 and the second connecting block 37 fixed on the adjacent mounting blocks, and the second L-shaped rod 36 and the third L-shaped rod 39 fixed on the adjacent first connecting block 35 and the second connecting block 37, the block fixed on the first straight plate moves to the right, and the stop bar 40 on the second straight plate moves to the left, so that the steel pipe to be processed falls on the adjacent stop bar 40. When the sliding plate 7 moves to the right, the steel pipe falls onto the fixed box 3. It is protected by a protective pad and fixed manually. The edge is then processed without manual feeding, which improves the edge-flipping efficiency of the device.

[0030] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A steel pipe flanging machine, comprising a workbench (1), characterized in that: Support legs are fixedly connected to the bottom of the workbench (1) near the four corners. An L-shaped plate (4) is fixedly connected to the top of the workbench (1) near the right side. A control panel (2) is fixedly connected to the right side of the L-shaped plate (4) near the bottom. An arc-shaped frame (5) is provided through the bottom of the L-shaped plate (4) near the left side. Two first rectangular openings are opened on the left side of the arc-shaped frame (5) near the bottom. The two first rectangular openings are arranged vertically. A fixed box (3) is fixedly connected to the top of the workbench (1) near the middle position. A baffle is fixedly connected to the top of the fixed box (3) near the left side. A protective pad is fixedly connected to the top of the fixed box (3). A second rectangular opening is opened on the right side of the fixed box (3) near the middle position. A fixing mechanism is provided in the inner cavity of the fixed box (3). An electric telescopic rod (6) is fixedly connected to the left side of the control panel (2) near the bottom. A sliding rod is fixedly connected to the left end of the electric telescopic rod (6). The sliding plate (7) has a first slider fixedly connected to its bottom. The top of the worktable (1) near the middle position has a first groove. The first slider is movably connected to the inner cavity of the first groove. The left side of the sliding plate (7) near the top position has a connecting rod (8). The left end of the connecting rod (8) is fixedly connected to a connecting seat (9). The left side of the connecting seat (9) has a flange seat (10). The right middle position of the flange seat (10) has a locking block. The left middle position of the connecting seat (9) has a slot. The locking block is inserted into the inner cavity of the slot. The top and bottom near the middle position of the locking block have slots. The top and bottom near the left side of the connecting seat (9) both have a third rectangular opening. The inner cavities of the two third rectangular openings are equipped with disassembly mechanisms. The left side of the flange seat (10) has a flange head fixedly connected. The top of the worktable (1) near the left side has a feeding mechanism.

2. The steel pipe flanging machine according to claim 1, characterized in that: The disassembly mechanism includes a fixing block (11), which is fixedly connected to the inner cavity of the third rectangular opening at the bottom near the bottom. A first bearing is fixedly connected to the top of the fixing block (11), and a threaded tube (12) is provided through the inner cavity of the first bearing. A knob is fixedly connected to the bottom end of the threaded tube (12). A threaded rod (13) is movably connected to the inner cavity of the threaded tube (12). A sliding block (14) is fixedly connected to the top end of the threaded rod (13). A second slider is fixedly connected to both the left and right sides of the sliding block (14). A second slide groove is provided on both the left and right sides of the inner cavity of the third rectangular opening near the top. Two second sliders are movably connected to the inner cavities of adjacent second slide grooves. An insert (15) is fixedly connected to the top of the sliding block (14), and the insert (15) is inserted into the inner cavity of the slot.

3. The steel pipe flanging machine according to claim 1, characterized in that: The fixing mechanism includes a servo motor (16), which is fixedly connected to the left side of the inner cavity of the fixing box (3) near the middle position. The power output shaft of the servo motor (16) is fixedly connected to a first single groove wheel. A second single groove wheel is provided on the right side of the first single groove wheel. A transmission belt (17) is provided between the second single groove wheel and the first single groove wheel. The second single groove wheel and the first single groove wheel are connected by transmission belt (17). A crossbar (19) is provided through the rear center of the second single groove wheel. Two mounting plates (18) are fixedly connected to the left side of the inner cavity of the fixing box (3) near the middle position. The two mounting plates (18) are second bearings. The front and rear ends of the crossbar (19) pass through the inner cavities of the adjacent second bearings and are fixedly connected to active bevel gears (20). The right sides of the two active bevel gears (20) are meshed with driven bevel gears (21). The right center of the two driven bevel gears (21) is fixedly connected to a round rod (22).

4. A steel pipe flanging machine according to claim 3, characterized in that: A connecting plate is fixedly connected to the right side of each of the two mounting plates (18) on the side that is far apart from each other. A third bearing is fixedly connected to the right side of each of the two connecting plates on the side that is far apart from each other. The right ends of the two round rods (22) pass through the inner cavity of the adjacent third bearing and are fixedly connected to a rotating gear (23). A limit plate (25) is fixedly connected to the right side of the inner cavity of the fixed box (3).

5. A steel pipe flanging machine according to claim 4, characterized in that: The bottoms of the two rotating gears (23) are engaged with movable rack plates (24), and the bottoms of the two movable rack plates (24) are fixedly connected to the opposite sides. The top of the limiting plate (25) is provided with a third sliding groove, and the two third sliding plates are movably connected to the inner cavity of the third sliding groove. The right side of the two rotating gears (23) is fixedly connected to a connecting shaft (26) near the middle position. The right end of the two connecting shafts (26) passes through the inner cavity of the second rectangular opening and is fixedly connected to a rectangular block. The top of the two rectangular blocks is fixedly connected to a first L-shaped rod (27), and the top of the two first L-shaped rods (27) is fixedly connected to an arc-shaped clamping plate (28).

6. A steel pipe flanging machine according to claim 1, characterized in that: The feeding mechanism includes a fixed rack plate (42), which is fixedly connected to the rear side of the sliding plate (7) near the bottom. Several rectangular plates (29) are fixedly connected to the top of the worktable (1) near the left side. Sprockets (31) are provided on the opposite side of the two rectangular plates (29) on the left and the two rectangular plates (29) on the right. A second rotating shaft (32) and a first rotating shaft (30) are respectively passed through the center of the front side of the two sprockets (31). Several rectangular plates (29) are fixedly connected to... A fourth bearing is connected. The front ends of the second shaft (32) and the first shaft (30) are respectively inserted into the inner cavity of the adjacent fourth bearing. The rear end of the first shaft (30) is inserted into the inner cavity of the adjacent fourth bearing. The rear end of the second shaft (32) passes through the inner cavity of the adjacent fourth bearing and is fixedly connected to a transmission gear (41). The transmission gear (41) and the fixed rack plate (42) are meshed with each other. A chain (33) is provided between the two sprockets (31), and the two sprockets (31) are connected by the chain (33).

7. A steel pipe flanging machine according to claim 6, characterized in that: The chain (33) has movable shafts fixedly connected to its front and rear sides near the left and right sides, respectively. Mounting blocks are fixedly connected to the ends of the two movable shafts. A first connecting block (35) and a second connecting block (37) are fixedly connected to the tops of the two mounting blocks, respectively. A limiting block (34) is fixedly connected to the bottom of the left mounting block. A fourth slider is fixedly connected to the bottom of the limiting block (34). A fourth sliding groove is provided on the top of the worktable (1) near the left side. The fourth slider is movably connected to the inner cavity of the fourth sliding groove. A second L-shaped rod (36) is fixedly connected to the bottom of the first connecting block (35). The right end of the second L-shaped rod (36) is fixedly connected to... A first straight plate is connected to the second connecting block (37). A through hole is opened on the left side of the second connecting block (37). A straight rod (38) is passed through the inner cavity of the through hole. Both ends of the straight rod (38) are fixedly connected to support blocks. The two support blocks are fixedly connected to adjacent rectangular plates (29) respectively. A third L-shaped rod (39) is fixedly connected to the top of the second connecting block (37) near the rear side. A second straight plate is fixedly connected to the right end of the third L-shaped rod (39). A stop strip (40) is fixedly connected to the right side of both the first straight plate and the second straight plate. The stop strip (40) at the top passes through the inner cavity of the adjacent first rectangular opening. The stop strip (40) at the bottom is located in the inner cavity of the first rectangular opening.

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