Bending device for steel pipe machining

Abstract

The invention relates to the technical field of bending, and provides a bending device for steel pipe machining, which comprises a fixed bending mechanism, a first bending driving mechanism, a second bending driving mechanism and a feeding mechanism, and is characterized in that the fixed bending mechanism comprises a first fixed roller, a second fixed roller and a third fixed roller; the second fixing roller and the third fixing roller are symmetrically distributed about a first fixing roller shaft, internal parts of the first bending driving mechanism and the second bending driving mechanism are consistent in composition, one end of a first hydraulic supporting rod in the first bending driving mechanism is fixedly connected with a transmission rack, and a hollow rotating frame and a first transmission gear are fixedly connected with a rotating shaft; and the surface of the first fixing roller is rotationally connected with the rotating shaft, a rotating roller is arranged at the end, away from the rotating shaft, of the hollow rotating frame, the purposes of multi-direction bending and one-time bending forming of the steel pipe are achieved, and the steel pipe bending device has the beneficial effects of being simple in structure, ingenious in structural cooperation, diversified in bending function and high in practicability.

Description

Technical Field

[0001] The invention relates to the technical field of bending, and in particular to a bending device for steel pipe processing. Background Art

[0002] The processed steel pipes are generally straight steel pipes. In order to meet actual needs, bending equipment is also needed to bend the steel pipes.

[0003] Patent No. CN114798848B discloses a precision bending and forming mold mechanism for steel pipe furniture, including a base, a moving mechanism, a workbench, a supporting mechanism, a motor, a rotating shaft, a connecting sleeve, a limit pin, a main shaft, a frame, a clamping mechanism, a supporting wheel, a bump, a supporting block, a stopper and a limit mechanism. The base is provided with a moving mechanism, the base is fixedly provided with a workbench, the workbench is provided with a supporting mechanism, the workbench is fixedly provided with a motor, the rotating shaft of the motor is rotatably connected to the workbench, the outer side of the rotating shaft is slidably connected with a connecting sleeve, the connecting sleeve is welded with a main shaft, and the outer side of the main shaft is fixedly sleeved with a frame. The device has the characteristics of being able to process and form steel pipes of different diameters, facilitating multi-directional bending of a steel pipe at multiple locations, and the bending angle of the steel pipe can be precisely controlled.

[0004] Due to actual needs, it is necessary not only to process steel pipes with multi-angle bending angles (in different planes), but also to process steel pipes with different bending angles in the same plane. Therefore, the above technical solution still has the problem of being unable to simultaneously process steel pipes with multi-angle bending angles and different bending angles in the same plane. Summary of the invention

[0005] The object of the present invention is to provide a bending device for steel pipe processing, aiming to solve the problems existing when using an existing bending device for steel pipe processing.

[0006] To achieve the above object, the present invention provides the following technical solution: a bending device for steel pipe processing, comprising: A fixed bending mechanism, the fixed bending mechanism comprising a first fixed roller, a second fixed roller and a third fixed roller, wherein the second fixed roller and the third fixed roller are symmetrically distributed about the first fixed roller axis; The first bending drive mechanism and the second bending drive mechanism are symmetrically distributed about the center of the first fixed roller, and the internal components of the first bending drive mechanism and the second bending drive mechanism are consistent, and the first bending drive mechanism includes a first hydraulic support rod, a transmission rack, a rotating roller, a hollow rotating frame, a rotating shaft and a first transmission gear, one end of the first hydraulic support rod is fixedly connected to the transmission rack, the hollow rotating frame and the first transmission gear are both fixedly connected to the rotating shaft, the surface of the first fixed roller is rotatably connected to the rotating shaft, and the end of the hollow rotating frame away from the rotating shaft is provided with a rotating roller; Feeding mechanism for gripping, rotating and moving steel tubes; During the process of the feeding mechanism rotating and moving the steel pipe, the first bending drive mechanism and the second bending drive mechanism respectively control the two rotating rollers to rotate counterclockwise around the rotating shaft through the first hydraulic support rod, so as to bend the steel pipe in multiple directions; When the steel pipe is placed between the first fixed roller and the two rotating rollers, the first bending drive mechanism and the second bending drive mechanism respectively control the two rotating rollers to rotate in opposite directions around the rotating shaft through the first hydraulic support rod, so that the steel pipe located between the two rotating rollers, the first fixed roller, the second fixed roller and the third fixed roller can be bent into shape at one time.

[0007] As a further solution of the present invention, the first bending drive mechanism also includes a second hydraulic strut, a telescopic frame and a limiting wheel, one end of the telescopic frame is fixedly connected to one side of the limiting wheel, the other end of the telescopic frame is movably sleeved in the hollow rotating frame, one end of the second hydraulic strut is fixedly connected to the surface of the hollow rotating frame, the telescopic frame is fixedly connected to the other end of the second hydraulic strut, the rotating roller is fixedly connected to the other side of the limiting wheel, and the second hydraulic strut achieves the purpose of adjusting the bending position of the steel pipe by adjusting the radial position of the rotating roller with the first fixed roller or the rotating axis as the center.

[0008] As a further solution of the present invention, the fixed bending mechanism also includes a center hole, an arc frame, a horizontal guide rail, a bearing frame and a bracket. A center hole is provided on the surface of the first fixed roller, arc frames are fixedly connected on both sides of the horizontal guide rail, and brackets are fixedly connected on the upper and lower sides of the arc frame respectively. The first fixed roller is fixedly connected to one end of the horizontal guide rail, and the second fixed roller and the third fixed roller are fixedly connected to both ends of the arc frame respectively. The first hydraulic support rods in the first bending drive mechanism and the second bending drive mechanism are fixedly connected to the bracket, and the bearing frame is fixedly connected under the arc frame, and the two rotating shafts are rotatably connected in the center hole.

[0009] As a further solution of the present invention, when the steel pipe is bent in multiple directions, the angle between the axes of the two rotating rollers and the center of the first fixed roller is 20 degrees or 30 degrees.

[0010] As a further solution of the present invention, when the steel pipe is bent once, the angle between the axes of the two rotating rollers and the center of the first fixed roller in the initial state is 45 degrees.

[0011] As a further solution of the present invention, the angle between the axis of the second fixed roller and the axis of the third fixed roller and the center of the first fixed roller is 90 degrees, 105 degrees or 120 degrees.

[0012] As a further solution of the present invention, the feeding mechanism includes a clamping portion, a first driving member, a rotating sleeve, a second transmission gear, a movable seat, a second driving member, a threaded rod and a fixed sleeve. The threaded rod is installed in a horizontal guide rail, and the end of the threaded rod is connected to the second driving member, the second driving member is fixedly connected to the horizontal guide rail, the movable seat is threadedly connected to the threaded rod, the first driving member and the fixed sleeve are both fixedly connected to the movable seat, the rotating sleeve is rotatably connected in the fixed sleeve, the second transmission gear is fixedly connected to the surface of the rotating sleeve, the first driving member is transmission-connected to the second transmission gear, and the clamping portion is installed in the rotating sleeve.

[0013] The beneficial effects of the present invention are as follows: the purpose of multi-directional bending of the steel pipe is achieved by rotating and moving the steel pipe through the feeding mechanism, and the first bending drive mechanism and the second bending drive mechanism respectively control the two rotating rollers through the first hydraulic support rod to rotate counterclockwise around the rotating shaft as the axis, and the purpose of controlling the steel pipe to be bent and formed once between the two rotating rollers, the first fixed roller, the second fixed roller and the third fixed roller is achieved by utilizing the design of the second fixed roller and the third fixed roller being symmetrically distributed about the first fixed roller axis, and the first bending drive mechanism and the second bending drive mechanism respectively control the two rotating rollers through the first hydraulic support rod to rotate in opposite directions around the rotating shaft as the axis, and the present invention has the characteristics of simple structure, ingenious structural coordination, diversified bending functions and strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The present invention is a three-dimensional diagram of a bending device for steel pipe processing according to an embodiment of the present invention.

[0015] Figure 2 This is an exploded view of a bending device for steel pipe processing according to an embodiment of the present invention.

[0016] Figure 3 It is a three-dimensional diagram of a fixed bending mechanism according to an embodiment of the present invention.

[0017] Figure 4 It is a three-dimensional diagram of the first bending drive mechanism according to an embodiment of the present invention.

[0018] Figure 5 It is a three-dimensional diagram of the clamping and feeding mechanism according to an embodiment of the present invention.

[0019] Figure 6 The figure is a schematic diagram of the processing of the present invention for multi-angle bending of steel pipes.

[0020] Figure 7 The figure is a processing schematic diagram of the present invention for one-step bending of a steel pipe.

[0021] Figure markings: 1-fixed bending mechanism, 11-first fixed roller, 111-center hole, 12-second fixed roller, 13-third fixed roller, 14-arc frame, 15-horizontal guide rail, 16-carrying frame, 17-bracket, 2-first bending drive mechanism, 21-first hydraulic support rod, 22-transmission rack, 23-rotating roller, 24-hollow rotating frame, 25-rotating shaft, 26-first transmission gear, 27-second hydraulic support rod, 28-telescopic frame, 29-limiting wheel, 3-second bending drive mechanism, 4-clamping and feeding mechanism, 41-clamping part, 42-first driving member, 43-rotating sleeve, 44-second transmission gear, 45-moving seat, 46-second driving member, 47-threaded rod, 48-fixed sleeve, 5-steel pipe. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0023] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0024] See also Figures 1 to 7 In one embodiment of the present invention, a bending device for steel pipe processing includes: A fixed bending mechanism 1, wherein the fixed bending mechanism 1 comprises a first fixed roller 11, a second fixed roller 12 and a third fixed roller 13, wherein the second fixed roller 12 and the third fixed roller 13 are symmetrically distributed about the axis of the first fixed roller 11; Regarding the first bending drive mechanism 2 and the second bending drive mechanism 3 which are symmetrically distributed about the center of the first fixed roller 11, the first bending drive mechanism 2 and the second bending drive mechanism 3 have the same internal components. The first bending drive mechanism 2 includes a first hydraulic support rod 21, a transmission rack 22, a rotating roller 23, a hollow rotating frame 24, a rotating shaft 25 and a first transmission gear 26. One end of the first hydraulic support rod 21 is fixedly connected with the transmission rack 22, the hollow rotating frame 24 and the first transmission gear 26 are both fixedly connected with the rotating shaft 25, the surface of the first fixed roller 11 is rotatably connected with the rotating shaft 25, and the end of the hollow rotating frame 24 away from the rotating shaft 25 is provided with a rotating roller 23; A feeding mechanism 4 for clamping, rotating and moving a steel pipe 5; During the process of the feeding mechanism 4 rotating and moving the steel pipe 5, the first bending drive mechanism 2 and the second bending drive mechanism 3 respectively control the two rotating rollers 23 to rotate counterclockwise around the rotating shaft 25 through the first hydraulic support rod 21, so as to bend the steel pipe 5 in multiple directions; When the steel pipe 5 is placed between the first fixed roller 11 and the two rotating rollers 23, the first bending drive mechanism 2 and the second bending drive mechanism 3 respectively control the two rotating rollers 23 to rotate in opposite directions around the rotating shaft 25 through the first hydraulic support rod 21, so that the steel pipe 5 located between the two rotating rollers 23, the first fixed roller 11, the second fixed roller 12 and the third fixed roller 13 can be bent into shape at one time.

[0025] See also Figures 1 to 7 Further, the fixed bending mechanism 1 also includes a center hole 111, an arc frame 14, a horizontal guide rail 15, a bearing frame 16 and a bracket 17. The surface of the first fixed roller 11 is provided with a center hole 111, and the arc frames 14 are fixedly connected on both sides of the horizontal guide rail 15. The upper and lower sides of the arc frame 14 are respectively fixedly connected to the brackets 17. The first fixed roller 11 is fixedly connected to one end of the horizontal guide rail 15, and the second fixed roller 12 and the third fixed roller 13 are respectively fixedly connected to the two ends of the arc frame 14. The first hydraulic support rod 21 in the first bending drive mechanism 2 and the second bending drive mechanism 3 is fixedly connected to the bracket 17, and the bearing frame 16 is fixedly connected below the arc frame 14. The two rotating shafts 25 are both rotatably connected in the center hole 111.

[0026] Furthermore, the feeding mechanism 4 includes a clamping portion 41, a first driving member 42, a rotating sleeve 43, a second transmission gear 44, a moving seat 45, a second driving member 46, a threaded rod 47 and a fixed sleeve 48, the threaded rod 47 is installed in the horizontal guide rail 15, the end of the threaded rod 47 is connected to the second driving member 46, the second driving member 46 is fixedly connected to the horizontal guide rail 15, the moving seat 45 is threadedly connected to the threaded rod 47, the first driving member 42 and the fixed sleeve 48 are both fixedly connected to the moving seat 45, the rotating sleeve 43 is rotatably connected in the fixed sleeve 48, the second transmission gear 44 is fixedly connected to the surface of the rotating sleeve 43, the first driving member 42 is transmission-connected to the second transmission gear 44, and the clamping portion 41 is installed in the rotating sleeve 43.

[0027] In the embodiment of the present invention, the clamping portion 41 includes an arc block and a cylinder, one end of the cylinder is fixedly connected to the rotating sleeve 43, and the arc block is fixedly connected to the other end of the cylinder. The three arc blocks are symmetrically distributed about the rotating sleeve 43 axis. When the steel pipe 5 is bent in multiple directions, in the initial state, the angle between the axes of the two rotating rollers 23 and the center of the first fixed roller 11 is 20 degrees or 30 degrees. When the steel pipe 5 is bent once, in the initial state, the angle between the axes of the two rotating rollers 23 and the center of the first fixed roller 11 is 45 degrees, and the angle between the axes of the second fixed roller 12 and the third fixed roller 13 and the center of the first fixed roller 11 is 90 degrees, 105 degrees or 120 degrees.

[0028] See also Figures 4 to 7In one embodiment of the present invention, the first bending drive mechanism 2 also includes a second hydraulic strut 27, a telescopic frame 28 and a limiting wheel 29, one end of the telescopic frame 28 is fixedly connected to one side of the limiting wheel 29, and the other end of the telescopic frame 28 is movably sleeved in the hollow rotating frame 24, one end of the second hydraulic strut 27 is fixedly connected to the surface of the hollow rotating frame 24, the telescopic frame 28 is fixedly connected to the other end of the second hydraulic strut 27, and the rotating roller 23 is fixedly connected to the other side of the limiting wheel 29. The second hydraulic strut 27 adjusts the radial position of the rotating roller 23 with the first fixed roller 11 or the rotating shaft 25 as the center to achieve the purpose of adjusting the bending position of the steel pipe 5.

[0029] In the embodiment of the present invention, when it is necessary to control the distance between the rotating roller 23 and the first fixed roller 11 (the position of the bending angle of the steel pipe 5), the second hydraulic support rod 27 is used to control the telescopic frame 28 to move along the hollow rotating frame 24 to achieve the purpose of adjusting the radial position of the rotating roller 23 with the first fixed roller 11 or the rotating shaft 25 as the center, thereby realizing the functions of one-time forming of the steel pipe 5 and automatic adjustment of the position of the steel pipe 5.

[0030] Working principle: The operation method of multi-directional bending of the steel pipe 5 is as follows: first, one end of the steel pipe 5 is inserted into the rotating sleeve 43, and the steel pipe 5 is fixed by the clamping part 41. Then, the second driving member 46 controls the rotation of the threaded rod 47 to achieve the purpose of controlling the movement of the movable seat 45 and the steel pipe 5 along the horizontal guide rail 15. When the bending position of the steel pipe 5 moves to the position of the first fixed roller 11, the two first hydraulic struts 21 in the first bending driving mechanism 2 and the second bending driving mechanism 3 simultaneously control the transmission rack 22 to move in opposite directions. The two transmission racks 22 moving in opposite directions pass through the first The transmission gear 26 controls the two rotating rollers 23 to rotate counterclockwise around the first fixed roller 11 or the rotating shaft 25. The two rotating rollers 23 drive the steel pipe 5 to bend a certain angle on the surface of the first fixed roller 11. When the rotating threaded rod 47 is used to control the steel pipe 5 to move a certain distance again, the second driving member 46 controls the rotating sleeve 43, the clamping part 41 and the steel pipe 5 to rotate a certain angle through the second transmission gear 44. Then, the above method is used to control the two rotating rollers 23 to bend the two steel pipes 5 from another angle until the bending of the remaining positions of the steel pipe 5 is finally completed.

[0031] The operation method of bending the steel pipe 5 in one step is as follows: first, the steel pipe 5 is inserted between the first fixed roller 11 and the two rotating rollers 23, and then the two first hydraulic struts 21 in the first bending drive mechanism 2 and the second bending drive mechanism 3 simultaneously control the transmission racks 22 to move in the same direction, and the two transmission racks 22 moving in the same direction control the two rotating rollers 23 to rotate in opposite directions with the first fixed roller 11 or the rotating shaft 25 as the axis through the first transmission gear 26. The two rotating rollers 23 rotating in opposite directions drive the steel pipe 5 to be bent in one step between the first fixed roller 11, the second fixed roller 12 and the third fixed roller 13.

[0032] To sum up, the purpose of multi-directional bending of the steel pipe 5 is achieved by rotating and moving the steel pipe 5 through the feeding mechanism 4, and the first bending drive mechanism 2 and the second bending drive mechanism 3 respectively control the two rotating rollers 23 to rotate counterclockwise around the rotating shaft 25 as the axis through the first hydraulic support rod 21. The design of the second fixed roller 12 and the third fixed roller 13 being symmetrically distributed about the axis of the first fixed roller 11, and the first bending drive mechanism 2 and the second bending drive mechanism 3 respectively control the two rotating rollers 23 to rotate in opposite directions around the rotating shaft 25 as the axis through the first hydraulic support rod 21, so as to control the steel pipe 5 to be bent and formed once between the two rotating rollers 23, the first fixed roller 11, the second fixed roller 12 and the third fixed roller 13. The structure is simple, the structure is ingenious, the bending function is diversified and the practicability is strong.

[0033] For those skilled in the art, although several embodiments and examples of the present invention are described, these embodiments and examples are presented as examples and are not intended to limit the scope of the invention. These new embodiments can be implemented in various other ways, and various omissions, substitutions, and changes can be made without departing from the scope of the subject matter of the invention. These embodiments and their variations are included in the scope and subject matter of the invention, and are included in the invention described in the claims and the scope of their equivalents.

[0034] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A bending device for steel pipe processing, characterized in that: include: A fixed bending mechanism (1), the fixed bending mechanism (1) comprising a first fixed roller (11), a second fixed roller (12) and a third fixed roller (13), the second fixed roller (12) and the third fixed roller (13) being symmetrically distributed about the axis of the first fixed roller (11); A first bending drive mechanism (2) and a second bending drive mechanism (3) are symmetrically distributed about the center of the first fixed roller (11), wherein the first bending drive mechanism (2) and the second bending drive mechanism (3) have the same internal component composition, wherein the first bending drive mechanism (2) comprises a first hydraulic support rod (21), a transmission rack (22), a rotating roller (23), a hollow rotating frame (24), a rotating shaft (25) and a first transmission gear (26), wherein one end of the first hydraulic support rod (21) is fixedly connected to the transmission rack (22), the hollow rotating frame (24) and the first transmission gear (26) are both fixedly connected to the rotating shaft (25), the surface of the first fixed roller (11) is rotationally connected to the rotating shaft (25), and the end of the hollow rotating frame (24) away from the rotating shaft (25) is provided with a rotating roller (23); A feeding mechanism (4) for clamping, rotating and moving the steel pipe (5); During the process of the feeding mechanism (4) rotating and moving the steel pipe (5), the first bending drive mechanism (2) and the second bending drive mechanism (3) respectively control the two rotating rollers (23) through the first hydraulic support rod (21) to rotate counterclockwise around the rotating shaft (25) at the same time, so as to bend the steel pipe (5) in multiple directions; When the steel pipe (5) is placed between the first fixed roller (11) and the two rotating rollers (23), the first bending drive mechanism (2) and the second bending drive mechanism (3) respectively control the two rotating rollers (23) to rotate in opposite directions with the rotating shaft (25) as the axis through the first hydraulic support rod (21), so that the steel pipe (5) located between the two rotating rollers (23), the first fixed roller (11), the second fixed roller (12) and the third fixed roller (13) can be bent into shape at one time.

2. A steel pipe bending device according to claim 1, characterized in that: The first bending drive mechanism (2) further comprises a second hydraulic strut (27), a telescopic frame (28) and a limiting wheel (29); one end of the telescopic frame (28) is fixedly connected to one side of the limiting wheel (29); the other end of the telescopic frame (28) is movably sleeved in the hollow rotating frame (24); one end of the second hydraulic strut (27) is fixedly connected to the surface of the hollow rotating frame (24); the telescopic frame (28) is fixedly connected to the other end of the second hydraulic strut (27); the rotating roller (23) is fixedly connected to the other side of the limiting wheel (29); the second hydraulic strut (27) adjusts the radial position of the rotating roller (23) with the first fixed roller (11) or the rotating shaft (25) as the center to achieve the purpose of adjusting the bending position of the steel pipe (5).

3. A steel pipe bending device according to claim 2, characterized in that: The fixed bending mechanism (1) further comprises a center hole (111), an arc frame (14), a horizontal guide rail (15), a bearing frame (16) and a bracket (17); the surface of the first fixed roller (11) is provided with a center hole (111); the arc frames (14) are fixedly connected to both sides of the horizontal guide rail (15); the upper and lower sides of the arc frame (14) are respectively fixedly connected to the brackets (17); the first fixed roller (11) is fixedly connected to one end of the horizontal guide rail (15); the second fixed roller (12) and the third fixed roller (13) are respectively fixedly connected to both ends of the arc frame (14); the first hydraulic support rod (21) in the first bending drive mechanism (2) and the second bending drive mechanism (3) is fixedly connected to the bracket (17); the bearing frame (16) is fixedly connected below the arc frame (14); and the two rotating shafts (25) are both rotatably connected in the center hole (111).

4. A steel pipe bending device according to claim 1, characterized in that: When the steel pipe (5) is bent in multiple directions, the angle between the axes of the two rotating rollers (23) and the center of the first fixed roller (11) is 20 degrees or 30 degrees.

5. The steel pipe bending device according to claim 1, characterized in that: When the steel pipe (5) is bent once, the angle between the axes of the two rotating rollers (23) and the center of the first fixed roller (11) in the initial state is 45 degrees.

6. A steel pipe bending device according to claim 1, characterized in that: The included angle between the axes of the second fixed roller (12) and the third fixed roller (13) and the center of the first fixed roller (11) is 90 degrees, 105 degrees or 120 degrees.

7. A steel pipe bending device according to claim 3, characterized in that: The feeding mechanism (4) comprises a clamping portion (41), a first driving member (42), a rotating sleeve (43), a second transmission gear (44), a moving seat (45), a second driving member (46), a threaded rod (47) and a fixed sleeve (48); the threaded rod (47) is installed in a horizontal guide rail (15); the end of the threaded rod (47) is connected to the second driving member (46); the second driving member (46) is fixedly connected to the horizontal guide rail (15); the moving seat (45) is threadedly connected to the threaded rod (47); the first driving member (42) and the fixed sleeve (48) are both fixedly connected to the moving seat (45); the rotating sleeve (43) is rotatably connected in the fixed sleeve (48); the second transmission gear (44) is fixedly connected to the surface of the rotating sleeve (43); the first driving member (42) is transmission-connected to the second transmission gear (44); and the clamping portion (41) is installed in the rotating sleeve (43).

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