Fully automatic rolling rounding method and device for large diameter stainless steel pipe

Abstract

The present invention discloses a method and device for fully automatic rolling and rounding of large-diameter stainless steel pipes. The method comprises the following steps: placing the steel pipe in a steel pipe mounting cylinder of a workpiece positioning seat and fixing it with a clamping claw mechanism. The rolling pushing mechanism and a motor are started. The motor drives cams at both ends to rotate through a driving shaft. The end of a driving rod is limited by a first limiting block and a first limiting groove. As the distance between the end of the driving rod and the workpiece positioning seat changes, the cam pushes the driving rod to move back and forth, thereby driving the rolling pushing mechanism to move through a pushing block and a pushing groove, thereby rolling the steel pipe into a full circle. The present invention can realize fully automatic rolling and rounding of steel pipes through a single motor, and has the characteristics of low cost and convenient use.

Description

Technical Field

[0001] The invention relates to the field of steel pipe processing, and in particular to a fully automatic rolling rounding method and a device for large-diameter stainless steel pipes. Background Art

[0002] In steel pipe processing, the outside of the steel pipe that has just been expanded is generally not smooth, and it needs to be rounded. The existing rolling and rounding mechanism generally fixes the steel pipe first, and then realizes the rounding of the steel pipe surface through the back and forth movement of the rolling wheel propulsion mechanism. At the same time, in order to ensure the integrity of the rounding, the steel pipe needs to be rotated frequently to adjust its rolled surface, which generally requires another drive motor to be set separately to achieve this, increasing the use cost and manufacturing cost of the whole machine. At the same time, it is also necessary to set a corresponding start and stop program to control the frequent start and stop of the drive motor, which is inconvenient to use. Summary of the invention

[0003] The purpose of the present invention is to provide a method and device for fully automatic rolling of large-diameter stainless steel pipes. The present invention can achieve fully automatic rolling of steel pipes into a round shape by a single motor, and has the characteristics of low cost and convenient use.

[0004] The technical solution of the present invention is a fully automatic rolling and rounding method for large-diameter stainless steel pipes. The steel pipe is placed in the steel pipe installation cylinder of the workpiece positioning seat and fixed with a clamping claw mechanism. The rolling and pushing mechanism and the motor are started. The motor drives the cams at both ends to rotate through the driving shaft. The end of the driving rod is limited by the first limiting block and the first limiting groove. As the distance between the end of the driving rod and the workpiece positioning seat changes, the cam will push the driving rod to move back and forth, and then drive the rolling and pushing mechanism to move through the push block and the push groove to achieve rolling and rounding of the steel pipe. When the raised end of the cam contacts the counterweight roller, the end where it is located is lifted, so that one end of the movable rod moves down. The first gear is engaged with the first wheel and the second gear is engaged with the first wheel, and the second gear is engaged with the first wheel, thereby the two wheels are engaged.

[0005] The fully automatic rounding device for large-diameter stainless steel pipes that implements the above method comprises a base plate, a transmission mechanism is provided on the base plate, a rolling propulsion mechanism connected to the transmission mechanism is provided on one side of the transmission mechanism, a workpiece positioning seat corresponding to the rolling propulsion mechanism is provided on one side of the rolling propulsion mechanism, and a shell enclosing the rolling propulsion mechanism is also provided on the base plate, the transmission mechanism comprises a driving shaft connected to the motor, cams are provided at both ends of the driving shaft, a driving rod rotatably connected is provided on the base circular surface on the opposite side of the raised end of the cam, a vertically arranged push groove is provided on the side of the rolling propulsion mechanism, and a push block matching the push groove is provided on the side of the driving rod; a first limiting groove corresponding to the extension direction of the driving rod is provided on the end of the driving rod, and a connecting tooth is provided on the bottom surface of the end of the driving rod; a rotatably connected connecting rod is provided on the side wall of the shell, and the connecting rod The two ends of the gear train are respectively provided with a counterweight roller and a movable rod connected in rotation, the counterweight roller is fitted with a cam, the movable rod is provided with a circular first limit block that matches the first limit groove, and a vertically arranged second limit groove is provided below the first limit block, and the outer shell is provided with a circular second limit block that matches the second limit groove; the workpiece positioning seat includes a seat body, a rotatably connected steel pipe mounting cylinder is provided on the top of the seat body, a clamping mechanism is provided at both ends of the steel pipe mounting cylinder, an annularly distributed external tooth is provided on the outer side surface of the steel pipe mounting cylinder, a vertical driving shaft and a driven shaft are provided in the cavity at the bottom of the seat body, a first bevel gear and a driven gear meshing with the external teeth are provided on the driven shaft, a second bevel gear meshing with the first bevel gear is provided on the driving shaft, and a driving gear meshing with the connecting teeth is provided at the end of the driving shaft.

[0006] In the aforementioned fully automatic rounding device for large-diameter stainless steel pipes, a laterally arranged protrusion is provided at the lower end of the movable rod, and a limiting tooth corresponding to the driving gear is provided on the top surface of the protrusion.

[0007] In the aforementioned fully automatic rounding device for large-diameter stainless steel pipes, a water spray pipe facing the rolling propulsion mechanism is provided on the workpiece positioning seat.

[0008] In the aforementioned fully automatic rolling device for large-diameter stainless steel pipes, the clamping mechanism includes a base plate connected to the steel pipe mounting tube, a circular mounting plate is provided on the base plate, and both the base plate and the mounting plate are provided with through holes; the mounting plate is provided with a plurality of slide grooves distributed in an annular shape with the through hole as the center, and a slidingly connected clamping block is provided in the slide groove; the mounting plate is provided with a mounting cavity connected to the slide groove, and an action circular plate is provided in the mounting cavity that is concentric with the through hole and rotatably connected, a spiral action groove is provided on the action circular plate, and a protrusion that engages with the spiral action groove is provided on the side of the clamping block; a plurality of openings are provided on the upper side of the base plate, a rotatably connected driving member is provided in the opening, the driving member is provided with driving teeth, and the side of the action circular plate is provided with action teeth that mesh with the driving teeth.

[0009] In the aforementioned fully automatic rounding device for large-diameter stainless steel pipes, the clamping block is provided with an anti-slip groove facing the perforation.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] 1. The transmission mechanism of the present invention comprises a driving shaft connected to the motor, cams are arranged at both ends of the driving shaft, a driving rod connected in rotation is arranged on the base circular surface on the opposite side of the raised end of the cam, a vertically arranged push groove is arranged on the side of the rolling propulsion mechanism, and a push block matching with the push groove is arranged on the side of the driving rod; a first limiting groove corresponding to the extending direction of the driving rod is arranged at the end of the driving rod, and a connecting tooth is arranged on the bottom surface of the end of the driving rod; a connecting rod connected in rotation is arranged on the side wall of the shell, and a counterweight roller and a movable rod connected in rotation are arranged at both ends of the connecting rod, the counterweight roller is fitted with the cam, and a circular one matching with the first limiting groove is arranged on the movable rod. A first limit block, a second limit groove arranged vertically below the first limit block, a circular second limit block matching the second limit groove is arranged on the shell; the workpiece positioning seat comprises a seat body, a rotatably connected steel pipe mounting cylinder is arranged on the top of the seat body, a clamping mechanism is arranged at both ends of the steel pipe mounting cylinder, an annularly distributed external tooth is arranged on the outer side surface of the steel pipe mounting cylinder, a vertical driving shaft and a driven shaft are arranged in the cavity at the bottom of the seat body, a first bevel gear and a driven gear meshing with the external tooth are arranged on the driven shaft, a second bevel gear meshing with the first bevel gear is arranged on the driving shaft, and a driving gear meshing with the connecting tooth is arranged at the end of the driving shaft; the steel pipe The steel pipe is placed in the steel pipe installation cylinder of the workpiece positioning seat and fixed with a clamping claw mechanism, the rolling propulsion mechanism and the motor are started, and the motor drives the cams at both ends to rotate through the driving shaft, and the end of the driving rod is limited by the first limit block and the first limit groove. As the distance between the end of the driving rod and the workpiece positioning seat changes, the cam will push the driving rod to move back and forth, and then drive the rolling propulsion mechanism to move through the push block and the push groove to achieve rolling of the steel pipe in a full circle; and when the raised end of the cam contacts the counterweight roller, the end where it is located is lifted, so that one end of the movable rod moves down, and then the end of the driving rod is pressed down through the cooperation of the first limit block and the first limit groove, so that the connecting The teeth are in contact with the driving gear, and as the driving rod moves horizontally, the driving gear is driven to rotate, and then the second bevel gear is driven to rotate through the driving shaft. The second bevel gear drives the driven shaft to rotate through the first bevel gear, and the driven gear drives the steel pipe installation cylinder to rotate through the external teeth to adjust the rolling surface of the steel pipe. When the raised end of the cam leaves the counterweight roller, the gravity of the counterweight roller drives one end of the movable rod to move upward, the connecting teeth are disengaged from the driving gear, and the steel pipe installation cylinder stops rotating, so that the steel pipe can achieve intermittent same-direction rotation when rolling a full circle. A single motor is used to achieve fully automatic rolling of the steel pipe in a full circle, which is low cost and easy to use.

[0012] 2. The lower end of the movable rod of the present invention is provided with a laterally arranged protrusion, and the top surface of the protrusion is provided with a limiting tooth corresponding to the driving gear. When the movable rod moves upward and the copper tube does not rotate, the limiting tooth engages with the driving gear. Since the connecting rod remains stationary at this time, the limiting tooth forms a locking and limiting effect on the driving gear, effectively preventing it from accidentally moving, thereby preventing unnecessary rotation and rotation, thereby ensuring the reliability of rolling a full circle.

[0013] 3. The workpiece positioning seat of the present invention is provided with a water spray pipe facing the rolling propulsion mechanism, which sprays water on the steel pipe during the processing, thereby timely removing the debris generated in the process, preventing it from wearing the steel pipe, and reducing the flying chips generated, further improving practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the present invention;

[0015] Figure 2 It is a structural schematic diagram of the transmission mechanism of the present invention;

[0016] Figure 3 It is a partial structural schematic diagram of the steel pipe installation cylinder of the present invention;

[0017] Figure 4 is an internal schematic diagram of the clamping jaw structure of the present invention;

[0018] Figure 5 It is a structural schematic diagram of the spiral action groove of the present invention.

[0019] Reference numerals

[0020] 1. Bottom plate; 2. Transmission mechanism; 3. Rolling and pushing mechanism; 4. Workpiece positioning seat; 5. Housing; 6. Driving shaft; 7. Cam; 8. Driving rod; 9. Pushing groove; 10. Pushing block; 11. First limiting groove; 12. Connecting teeth; 14. Connecting rod; 15. Counterweight roller; 16. Movable rod; 17. First limiting block; 18. Second limiting groove; 19. Second limiting block; 20. Seat body; 21. Steel pipe installation tube; 22. Clamping mechanism; 23. External teeth; 25. Active shaft; 26. Driven shaft; 27. First bevel gear; 28. Driven gear; 29. ​​Second bevel gear; 30. Driving gear; 31. Projection; 32. Limiting tooth; 33. Spray pipe; 34. Base plate; 35. Mounting plate; 36. Perforation; 37. Slide groove; 38. Clamp; 39. Mounting cavity; 40. Action circular plate; 41. Spiral action groove; 42. Projection; 43. Opening; 44. Driving member; 45. Driving tooth; 46. Action tooth. DETAILED DESCRIPTION

[0021] The present invention is further described below in conjunction with the accompanying drawings and embodiments, but they are not intended to limit the present invention.

[0022] Embodiment: Fully automatic rolling device for large-diameter stainless steel pipes, as shown in the attached Figure 1 As shown, it includes a bottom plate 1, a transmission mechanism 2 is provided on the bottom plate 1, a rolling propulsion mechanism 3 connected to the transmission mechanism 2 is provided on one side thereof, a roller is provided at the bottom to move on a guide rail, and a ring-shaped rolling wheel is provided inside to roll the steel pipe, which is a technical means well known and mastered by those skilled in the art and will not be described in detail here. A workpiece positioning seat 4 corresponding to the rolling propulsion mechanism 3 is provided on one side of the rolling propulsion mechanism 3, and a shell 5 enclosing the rolling propulsion mechanism 3 is also provided on the bottom plate 1, as shown in the attached figure. Figure 2 As shown, the transmission mechanism 2 includes a driving shaft 6 connected to the motor, and cams 7 are provided at both ends of the driving shaft 6. A rotatably connected driving rod 8 is provided on the base circular surface on the opposite side of the raised end of the cam 7. A vertically arranged push groove 9 is provided on the side of the rolling propulsion mechanism 3, and a push block 10 that fits with the push groove 9 is provided on the side of the driving rod 8; a first limiting groove 11 corresponding to the extension direction of the driving rod 8 is provided at the end of the driving rod 8, and a connecting tooth 12 is provided on the bottom surface of the end of the driving rod 8; a rotatably connected connecting rod 14 is provided on the side wall of the housing 5, and both ends of the connecting rod 14 A counterweight roller 15 and a movable rod 16 connected in rotation are respectively provided. The torque generated by the counterweight roller is greater than the torque generated by the movable rod. Therefore, when no external force is applied, the connecting rod will tilt toward one side of the counterweight roller. The counterweight roller 15 is fitted with the cam 7. A circular first limit block 17 matching the first limit groove 11 is provided on the movable rod 16. A vertically arranged second limit groove 18 is provided below the first limit block 17. A circular second limit block 19 matching the second limit groove 18 is provided on the housing 5. The workpiece positioning seat 4 includes a seat body 20, as shown in the attached Figure 3 As shown, a steel pipe mounting cylinder 21 rotatably connected by a roller bearing is provided on the top of the seat body 20, a clamping mechanism 22 is provided at both ends of the steel pipe mounting cylinder 21, and an annularly distributed external tooth 23 is provided on the outer side of the steel pipe mounting cylinder 21. A vertical driving shaft 25 and a driven shaft 26 are provided in the cavity at the bottom of the seat body 20, and a first bevel gear 27 and a driven gear 28 meshing with the external tooth 23 are provided on the driven shaft 26, and a second bevel gear 29 meshing with the first bevel gear 27 is provided on the driving shaft 25, and a driving gear 30 meshing with the connecting tooth 12 is provided at the end of the driving shaft 25; a transversely arranged protrusion 31 is provided at the lower end of the movable rod 16, and a limit tooth 32 corresponding to the driving gear 30 is provided on the top surface of the protrusion 31; a water spray pipe 33 facing the rolling propulsion mechanism 3 is provided on the workpiece positioning seat 4; as shown in the attached Figure 4 and attached Figure 5As shown, the clamp mechanism 22 includes a base plate 34 connected to the steel pipe mounting tube 21, a circular mounting plate 35 is provided on the base plate 34, and a through hole 36 is provided on both the base plate 34 and the mounting plate 35; the mounting plate 35 is provided with a plurality of slide grooves 37 distributed in an annular manner with the through hole 36 as the center, and a clamp block 38 connected in a sliding manner is provided in the slide groove 37; a mounting cavity 39 connected to the slide groove 37 is provided in the mounting plate 35, and an action circular plate 40 is provided in the mounting cavity 39 that is concentric with the through hole 36 and rotatably connected, and a spiral action groove 41 is provided on the action circular plate 40, and a side of the clamp block 38 is provided with a spiral action groove 41 connected to the spiral action groove 41. The base plate 34 is provided with a plurality of openings 43 on the upper side, a driving member 44 rotatably connected is provided in the opening 43, and a driving tooth 45 is provided on the driving member 44. The side of the action circular plate 40 is provided with an action tooth 46 meshing with the driving tooth 45. The steel pipe is placed in the two through holes. The driving member drives the action circular plate to rotate through the driving teeth. The rotating action circular plate drives the protrusions to produce relative movement through the spiral action groove, so that each clamping block moves inward at the same time to clamp the steel pipe; the clamping block 38 is provided with an anti-skid groove 47 facing the through hole 36, and the anti-skid groove can increase the friction.

[0023] The fully automatic rolling full circle method of the above device is used to place the steel pipe in the steel pipe installation cylinder of the workpiece positioning seat and fix it with a clamping claw mechanism, and start the rolling propulsion mechanism and the motor. The motor drives the cams at both ends to rotate through the driving shaft, and the end of the driving rod is limited by the first limit block and the first limit groove. As the distance between the end of the driving rod and the workpiece positioning seat changes, the cam will push the driving rod to move back and forth, and then drive the rolling propulsion mechanism to move through the push block and the push groove to achieve rolling full circle for the steel pipe; and when the raised end of the cam contacts the counterweight roller, the end where it is located is lifted, so that one end of the movable rod moves down, and then through The cooperation of the first limit block and the first limit groove presses down the end of the driving rod, so that the connecting tooth contacts the driving gear, and drives the driving gear to rotate with the lateral movement of the driving rod, and then drives the second bevel gear to rotate through the active shaft, and the second bevel gear drives the driven shaft to rotate through the first bevel gear, and the driven gear drives the steel pipe mounting cylinder to rotate through the external teeth to adjust the rolling surface of the steel pipe; when the raised end of the cam leaves the counterweight roller, the gravity of the counterweight roller drives one end of the movable rod to move upward, the connecting tooth disengages from the driving gear, and the steel pipe mounting cylinder stops rotating, so that the steel pipe can achieve intermittent same-direction rotation when rolling a full circle.

Claims

1. A fully automatic rolling method for large-diameter stainless steel pipes, characterized by: The steel pipe is placed in the steel pipe installation cylinder of the workpiece positioning seat and fixed with a clamping claw mechanism, and the rolling propulsion mechanism and the motor are started. The motor drives the cams at both ends to rotate through the driving shaft, and the end of the driving rod is limited by the first limit block and the first limit groove. As the distance between the end of the driving rod and the workpiece positioning seat changes, the cam will push the driving rod to move back and forth, and then drive the rolling propulsion mechanism to move through the push block and the push groove to achieve rolling of the steel pipe in a full circle; and when the raised end of the cam contacts the counterweight roller, the end where it is located is lifted, so that one end of the movable rod moves down, and then passes through the first limit block and the first The cooperation of the limiting groove presses the end of the driving rod downward, so that the connecting tooth contacts the driving gear, and drives the driving gear to rotate with the lateral movement of the driving rod, and then drives the second bevel gear to rotate through the active shaft, and the second bevel gear drives the driven shaft to rotate through the first bevel gear, and the driven gear drives the steel pipe installation cylinder to rotate through the external teeth to adjust the rolling surface of the steel pipe; when the raised end of the cam leaves the counterweight roller, the gravity of the counterweight roller drives one end of the movable rod to move upward, the connecting tooth disengages from the driving gear, and the steel pipe installation cylinder stops rotating, so that the steel pipe can achieve intermittent same-direction rotation when rolling a full circle; The method adopts a fully automatic rolling device for large-diameter stainless steel pipes, which comprises a base plate (1), a transmission mechanism (2) is provided on the base plate (1), a rolling propulsion mechanism (3) connected to the transmission mechanism (2) is provided on one side of the transmission mechanism (2), a workpiece positioning seat (4) corresponding to the rolling propulsion mechanism (3) is provided on one side of the rolling propulsion mechanism (3), and a housing (5) enclosing the rolling propulsion mechanism (3) is also provided on the base plate (1), the transmission mechanism (2) comprises a driving shaft (6) connected to a motor, and cams are provided at both ends of the driving shaft (6). (7), a rotatably connected driving rod (8) is provided on the base circular surface on the opposite side of the raised end of the cam (7), a vertically arranged pushing groove (9) is provided on the side of the rolling advancing mechanism (3), and a pushing block (10) is provided on the side of the driving rod (8) and is matched with the pushing groove (9); the end of the driving rod (8) is provided with a first limiting groove (11) corresponding to the extension direction thereof, and the bottom surface of the end of the driving rod (8) is provided with a connecting tooth (12); a rotatably connected connecting rod (14) is provided on the side wall of the housing (5), and counterweight rollers ( 15) and a movable rod (16) rotatably connected, the counterweight roller (15) is fitted with the cam (7), a circular first limit block (17) is provided on the movable rod (16) and is fitted with the first limit groove (11), a vertically arranged second limit groove (18) is provided below the first limit block (17), and a circular second limit block (19) is provided on the housing (5) and is fitted with the second limit groove (18); the workpiece positioning seat (4) comprises a seat body (20), a top of the seat body (20) is provided with a rotatably connected steel pipe mounting cylinder (21), and the steel pipe mounting cylinder (21) is provided with a plurality of movable rods (15) and a rotatably connected movable rod (16), the counterweight roller (15) is fitted with the cam (7), a circular first limit block (17) and is fitted with the first limit groove (11), a vertically arranged second limit groove (18) is provided below the first limit block (17), and a circular second limit block (19) and is fitted with the second limit groove (18) is provided on the housing (5); the workpiece positioning seat (4) comprises a seat body (20), a top of the seat body (20) is provided with a rotatably connected steel pipe mounting cylinder (21), and a steel pipe mounting cylinder (21) is provided with a plurality of movable rods (15) and a rotatably connected movable rod (16), and a counterweight roller (15) is fitted with the cam (7), a circular first limit block (17) and is fitted with the first limit groove (11) on the movable rod (16), a circular second limit block (19) and a second limit groove (18) on the movable rod (16 ... The two ends of the cylinder (21) are provided with a clamping mechanism (22), the outer side surface of the steel pipe mounting cylinder (21) is provided with annularly distributed external teeth (23), a vertical driving shaft (25) and a driven shaft (26) are provided in a cavity at the bottom of the seat body (20), a first bevel gear (27) and a driven gear (28) meshing with the external teeth (23) are provided on the driven shaft (26), a second bevel gear (29) meshing with the first bevel gear (27) is provided on the driving shaft (25), and a driving gear (30) meshing with the connecting teeth (12) is provided at the end of the driving shaft (25).

2. The fully automatic rolling rounding method for large-diameter stainless steel pipes according to claim 1 is characterized in that: The lower end of the movable rod (16) is provided with a transversely arranged protrusion 1 (31), and the top surface of the protrusion 1 (31) is provided with a limiting tooth (32) corresponding to the driving gear (30).

3. The fully automatic rolling rounding method for large-diameter stainless steel pipes according to claim 1 is characterized in that: The workpiece positioning seat (4) is provided with a water spray pipe (33) directed toward the rolling propulsion mechanism (3).

4. The fully automatic rolling rounding method for large-diameter stainless steel pipes according to claim 1 is characterized in that: The clamping mechanism (22) comprises a base plate (34) connected to the steel pipe mounting tube (21); a circular mounting plate (35) is provided on the base plate (34); both the base plate (34) and the mounting plate (35) are provided with a through hole (36); the mounting plate (35) is provided with a plurality of slide grooves (37) distributed in an annular manner with the through hole (36) as the center; a clamping block (38) is provided in the slide groove (37) for sliding connection; a mounting cavity (39) is provided in the mounting plate (35) and is connected to the slide groove (37); a mounting cavity (39) is provided in the mounting cavity (39) An action circular plate (40) is rotatably connected to the through hole (36) and is concentric with the action circular plate (40). A spiral action groove (41) is provided on the action circular plate (40). A second protrusion (42) engaged with the spiral action groove (41) is provided on the side of the clamping block (38). A plurality of openings (43) are provided on the side of the base plate (34). A rotatably connected driving member (44) is provided in the opening (43). A driving tooth (45) is provided on the driving member (44). An action tooth (46) engaged with the driving tooth (45) is provided on the side of the action circular plate (40).

5. The fully automatic rolling rounding method for large-diameter stainless steel pipes according to claim 4 is characterized in that: The clamping block (38) is provided with an anti-slip groove (47) facing the through hole (36).

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