A liftable elbow device

Abstract

A kind of liftable elbow device, bottom plate is equipped with left and right stand, left and right stand is equipped with lifting cylinder with cylinder connector between left and right stand, lifting cylinder connecting shaft seat lower plate, shaft seat lower plate is connected with shaft seat upper plate by reset rack;Shaft seat upper plate is fixed with self-rotating oil cylinder fixed plate, fixed plate is equipped with reset oil cylinder and elbow oil cylinder, reset oil cylinder is transmission connection reset rack, elbow oil cylinder is transmission connection roll bending rack;Through shaft seat upper plate and elbow rotating plate, elbow center shaft is equipped, elbow center shaft is equipped with bearing, copper sleeve and elbow wheel, elbow rotating plate is equipped with oil cylinder, center distance connecting rod, positive and negative tooth connection structure, clamping plate slide, elbow clamping plate and roller constitute pipe clamping mechanism, shaft seat upper and lower reinforcing plate improves structure rigidity.The utility model discloses when working, lifting cylinder is adjusted equipment processing height, utilizes reset oil cylinder to cooperate reset rack and realizes elbow wheel automatic reset, by clamping mechanism firm fixation pipe material, then by elbow oil cylinder drive roll bending rack movement, drive elbow wheel to complete pipe bending processing.

Description

Technical Field

[0001] This utility model belongs to the field of pipe processing machinery technology, specifically relating to a lifting and bending device for pipes. Background Technology

[0002] In furniture manufacturing, bending of metal tubing is frequently required. Existing tube bending equipment has several shortcomings: firstly, its functionality is limited, with poor coordination between lifting, translating, clamping, and bending actions, making it difficult to bend tubes at complex spatial angles; secondly, the clamping mechanism lacks rigidity or is inconvenient to adjust, easily leading to tube slippage or excessive indentation during bending; and thirdly, the transmission structure is not optimized, exhibiting gaps or insufficient rigidity, affecting bending accuracy and stability. Currently, bending tubes at complex spatial angles requires manual assistance with existing processing equipment. If lifting and translating capabilities were available, continuous processing could be achieved, significantly reducing manual labor requirements. Therefore, there is an urgent need to design and manufacture a lifting tube bending device to meet practical needs. Utility Model Content

[0003] The purpose of this invention is to provide a lifting and bending device to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a lifting and lowering pipe bending device, comprising a base plate, a left column, a right column, a lifting cylinder, a cylinder connector, a lower bearing plate, a reset rack, a reset cylinder, a self-rotating cylinder fixing plate, a pipe bending cylinder, an upper bearing plate, a sliding groove side plate, a rolling rack, upper and lower reinforcing plates of the bearing, a first nut, a lower tapered roller bearing, a copper sleeve, an upper tapered roller bearing, a pipe bending shaft, a pipe bending rotating plate, a cylinder rotating shaft fixing seat, a cylinder body, a piston rod, a connecting rod rotating shaft fixing seat, a center distance connecting rod, a reverse thread connector, a second nut, a straight thread connector, and a straight and reverse thread bolt. The system includes a clamping slide, rollers, spring fixing connectors, a bent pipe clamping plate, and a bent pipe wheel. The base plate has a left column and a right column. A lifting cylinder is located between the left and right columns and has a cylinder connector on it. One side of the lower plate of the shaft seat is connected to the cylinder connector, and the other side has a return rack. The upper plate of the shaft seat is located on the return rack. The rotating cylinder fixing plate has a return cylinder and a bent pipe cylinder, and the rotating cylinder fixing plate is connected to the side of the upper plate of the shaft seat. The return cylinder is connected to the return rack. The side plate of the slide groove has a rolling rack on it, and the side is connected to the... The hydraulic cylinder is connected to the fixed plate; the bending cylinder is connected to the bending rack; one side of the upper plate of the bearing seat is embedded in the side plate of the slide groove; the upper and lower reinforcing plates of the bearing seat are connected to the lower plate, the upper plate and the side plate of the slide groove; the bending shaft is fitted with a lower tapered roller bearing, an upper tapered roller bearing, a copper sleeve and a bending wheel from bottom to top, and the bending shaft passes through the upper plate of the bearing seat and the bending rotating plate, and the bending wheel is located on the bending rotating plate; the first nut is located at the bottom of the bending shaft; the bending rotating plate is provided with a cylinder shaft fixing seat, a cylinder body, a connecting rod shaft fixing seat and a bending clamp. The system includes a plate and a clamping plate slide. The cylinder shaft fixing seat is connected to the cylinder body, and a piston rod is mounted on the cylinder body. The piston rod is connected to a center-distance connecting rod. A reverse-threaded connector is mounted on the center-distance connecting rod and is continuous with the connecting rod shaft fixing seat. One side of the second nut is connected to the piston rod and the center-distance connecting rod, and the other side is connected to the positive-threaded connector. One side of the positive-reverse-threaded bolt is connected to the positive-threaded connector, and the other side is connected to the clamping plate slide. The clamping plate slide is connected to a bent pipe clamping plate. Rollers are mounted on the clamping plate slide. A spring fixing connector is mounted on the bent pipe clamping plate.

[0005] Preferably, the lower tapered roller bearing is located under the upper plate of the bearing seat and is connected to the reset rack.

[0006] Preferably, the upper tapered roller bearing is connected to the rolled rack.

[0007] Preferably, the piston rod is fixed by a reverse-threaded connector on the connecting rod.

[0008] Preferably, the center distance connecting rod and the connecting rod shaft fixing seat are connected by a dovetail groove guide rail.

[0009] Preferably, the clamping plate slide and the bent pipe clamping plate are connected by a guide rail type structure, and the connection between the two is provided with rollers, with more than one roller.

[0010] Preferably, the spring fixing connector is connected to the clamp slide via a spring.

[0011] Preferably, the lower plate of the bearing seat and the cylinder connector are connected by a guide rail type structure.

[0012] Preferably, the lower plate of the bearing seat is provided with a limiting post, which is located on the outer side of the reset rack.

[0013] Preferably, the clamp slide and the bend plate are connected by a guide rail type structure.

[0014] The beneficial effects are:

[0015] 1. Integrated functions and flexible operation: Through the coordinated work of the lifting cylinder, the reset cylinder and the bending cylinder, the bending device can be adjusted in multiple degrees of freedom in space, which can complete the bending task of complex angles and save a lot of labor costs.

[0016] 2. Stable transmission and high precision: Utilizing tapered roller bearings and a rack and pinion drive, it boasts sufficient rigidity, minimal backlash, and precise bending angles. The center distance connecting rod is connected via dovetail groove guide rails, further enhancing transmission accuracy.

[0017] 3. Reliable clamping and strong adaptability: The clamping mechanism adopts a combination of guide rails and rollers, ensuring smooth movement. The clamping distance can be easily fine-tuned using the positive and negative threaded bolts to accommodate different pipe diameters. The spring buffer design makes the clamping force gentler and more reliable, preventing damage to the pipe.

[0018] 4. Good structural rigidity and long service life: The rigidity of the main frame is enhanced by the upper and lower reinforcing plates of the bearing seat, and the design of each moving pair is reasonable, resulting in less wear and a long service life of the equipment. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the pipe bending plate of this utility model.

[0021] In the diagram: 1. Base plate; 2. Left column; 3. Right column; 4. Lifting cylinder; 5. Cylinder connector; 6. Lower bearing plate; 7. Reset rack; 8. Reset cylinder; 9. Rotation cylinder fixing plate; 10. Bending cylinder; 11. Upper bearing plate; 12. Slide side plate; 13. Bending rack; 14. Upper and lower reinforcing plates of the bearing; 15. First nut; 16. Lower tapered roller bearing; 17. Copper sleeve; 18. Upper tapered roller bearing. 19. Sub-bearing; 20. Pipe bending shaft; 21. Pipe bending plate; 22. Hydraulic cylinder shaft fixing seat; 23. Hydraulic cylinder body; 24. Piston rod; 25. Connecting rod shaft fixing seat; 26. Center distance connecting rod; 27. Reverse thread connector; 28. Second nut; 29. ​​Straight thread connector; 30. Straight and reverse thread bolts; 31. Clamping plate slide; 32. Roller; 33. Spring fixing connector; 34. Pipe bending clamp; 35. Pipe bending wheel. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0023] like Figure 1 , Figure 2As shown, a lifting pipe bending device includes a base plate 1, a left column 2, a right column 3, a lifting cylinder 4, a cylinder connector 5, a lower bearing plate 6, a reset rack 7, a reset cylinder 8, a self-rotating cylinder fixing plate 9, a pipe bending cylinder 10, an upper bearing plate 11, a slide side plate 12, a rolling rack 13, upper and lower reinforcing plates 14, a first nut 15, a lower tapered roller bearing 16, a copper sleeve 17, an upper tapered roller bearing 18, a pipe bending shaft 19, a pipe bending rotating plate 20, a cylinder rotating shaft fixing seat 21, a cylinder body 22, a piston rod 23, a connecting rod rotating shaft fixing seat 24, a center distance connecting rod 25, a reverse thread connector 26, a second nut 27, a straight thread connector 28, a straight and reverse thread bolt 29, a clamping plate slide 30, and a roller 31. The components include a spring fixing connector 32, a pipe bending clamp 33, and a pipe bending wheel 34. The base plate 1 has a left column 2 and a right column 3. A lifting cylinder 4 is located between the left column 2 and the right column 3, and the lifting cylinder 4 has a cylinder connector 5. One side of the lower bearing plate 6 is connected to the cylinder connector 5, and the other side has a reset rack 7. An upper bearing plate 11 is located on the reset rack 7. A reset cylinder 8 and a pipe bending cylinder 10 are located on the self-rotating cylinder fixing plate 9, and the self-rotating cylinder fixing plate 9 is connected to the side of the upper bearing plate 11. The reset cylinder 8 is connected to the reset rack 7. A rolling rack 13 is located on the slide side plate 12, and its side is connected to the self-rotating cylinder fixing plate 9. The bending cylinder 10 is connected to the bending rack 13; one side of the upper plate 11 of the bearing seat is embedded in the side plate 12 of the slide groove; the upper and lower reinforcing plates 14 of the bearing seat are connected to the lower plate 6, the upper plate 11 of the bearing seat, and the side plate 12 of the slide groove; the bending shaft 19 is fitted with a lower tapered roller bearing 16, an upper tapered roller bearing 18, a copper sleeve 17, and a bending wheel 34 from bottom to top, and the bending shaft 19 passes through the upper plate 11 of the bearing seat at the bottom and through the bending rotating plate 20 at the top, and the bending wheel 34 is set on the bending rotating plate 20; the first nut 15 is set at the bottom of the bending shaft 19; the bending rotating plate 20 is provided with a cylinder shaft fixing seat 21, a cylinder body 22, a connecting rod shaft fixing seat 24, a bending clamp 33, and a clamp. The cylinder has a slide 30; the cylinder shaft fixing seat 21 is connected to the cylinder body 22, and the cylinder body 22 is provided with a piston rod 23, which is connected to the center distance connecting rod 25; the center distance connecting rod 25 is provided with a reverse thread connector 26, which is continuous with the connecting rod shaft fixing seat 24; the second nut 27 is connected to the piston rod 23 and the center distance connecting rod 25 on one side, and to the straight thread connector 28 on the other side; the reverse thread bolt 29 is connected to the straight thread connector 28 on one side, and to the clamping plate slide 30 on the other side; the clamping plate slide 30 is connected to the bent pipe clamping plate 33; the roller 31 is provided on the clamping plate slide 30; the spring fixing connector 32 is provided on the bent pipe clamping plate 33. The lower tapered roller bearing 16 is provided under the upper plate 11 of the bearing seat and is connected to the return rack 7.The upper tapered roller bearing 18 is connected to the bent rack 13. The piston rod 23 is fixed by a reverse-threaded connector 26 on the center-distance connecting rod 25. The center-distance connecting rod 25 and the connecting rod shaft fixing seat 24 are connected by a dovetail groove guide rail. The clamping plate slide 30 and the bending pipe clamping plate 33 are connected by a guide rail, and rollers 31 are provided at the connection point, with more than one roller 31. The spring fixing connector 32 is connected to the clamping plate slide 30 by a spring. The lower shaft seat plate 6 and the cylinder connector 5 are connected by a guide rail. The lower shaft seat plate 6 is provided with a limiting post, which is located on the outer side of the reset rack 7. The clamping plate slide 30 and the bending pipe rotating plate 20 are connected by a guide rail.

[0024] The operation mode of this invention is as follows: the lifting cylinder 4 is responsible for the lifting and lowering of the entire pipe bending device; the oil cylinder drives the piston rod 24, which drives the center distance connecting rod 25 to drive the clamping plate slide 30 forward. The pipe is fixed by the squeezing of the pipe bending clamping plate 33 and the pipe bending wheel 34. Then, the pipe bending cylinder 10 drives the rolling bending rack 13 to drive the pipe bending wheel 34 to rotate. As the pipe bending clamping plate 33 and the pipe bending wheel 34 rotate together, the pipe bending is realized. Then, the reset cylinder 8 drives the reset rack 7 to drive the lower tapered roller bearing 16 to realize the reset of the pipe bending wheel 34 and release the bent pipe.

[0025] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model.

Claims

1. A lifting and lowering pipe bending device, comprising a base plate (1), a left column (2), a right column (3), a lifting cylinder (4), a cylinder connector (5), a lower bearing plate (6), a reset rack (7), a reset cylinder (8), a self-rotating cylinder fixing plate (9), a pipe bending cylinder (10), an upper bearing plate (11), a sliding groove side plate (12), a bending rack (13), upper and lower reinforcing plates of the bearing (14), a first nut (15), a lower tapered roller bearing (16), a copper sleeve (17), and an upper tapered roller bearing. The components include: sub-bearing (18), pipe bending shaft (19), pipe bending plate (20), cylinder shaft fixing seat (21), cylinder body (22), piston rod (23), connecting rod shaft fixing seat (24), center distance connecting rod (25), reverse thread connector (26), second nut (27), straight thread connector (28), straight and reverse thread bolt (29), clamping plate slide (30), roller (31), spring fixing connector (32), pipe bending clamp (33), and pipe bending wheel (34). The characteristics are as follows: The base plate (1) is provided with a left column (2) and a right column (3). A lifting cylinder (4) is located between the left column (2) and the right column (3). A cylinder connector (5) is provided on the lifting cylinder (4). One side of the lower plate (6) of the shaft seat is connected to the cylinder connector (5), and the other side is provided with a reset rack (7). A shaft seat upper plate (11) is provided on the reset rack (7). A reset cylinder (8) and a bend cylinder (10) are provided on the self-rotating cylinder fixing plate (9). At the same time, the self-rotating cylinder fixing plate (9) is connected to the side of the shaft seat upper plate (11). The reset cylinder (8) and the reset rack (10) are connected to the cylinder connector (5). 7) Connected; the slide side plate (12) is provided with a bending rack (13), and the side is connected to the self-rotating cylinder fixing plate (9); the bending cylinder (10) is connected to the bending rack (13); one side of the upper plate (11) of the shaft seat is embedded in the slide side plate (12); the upper and lower reinforcing plates (14) of the shaft seat are connected to the lower plate (6), the upper plate (11) of the shaft seat and the slide side plate (12); the bending cylinder shaft (19) is fitted with a lower tapered roller bearing (16), an upper tapered roller bearing (18), a copper sleeve (17), and a bending wheel (34) from bottom to top, and the bending cylinder shaft (19) is connected to the self-rotating cylinder fixing plate (9); the bending cylinder (10) is connected to the self-rotating cylinder fixing plate (9); the bending cylinder (10) is connected to the self-rotating cylinder fixing plate (9); the upper plate (11) of the shaft seat is embedded in the slide side plate (12); the upper and lower reinforcing plates (14) of the shaft seat are connected to the lower plate (6), the upper plate (11) of the shaft seat and the slide side plate (9); the bending cylinder shaft (19) is connected to the self-rotating cylinder fixing plate (9) from bottom to top; ... 9) The lower through-shaft seat upper plate (11) and the upper through-bending pipe rotating plate (20) are connected, and the bending pipe wheel (34) is set on the bending pipe rotating plate (20); the first nut (15) is set at the bottom of the bending pipe central shaft (19); the bending pipe rotating plate (20) is provided with a cylinder shaft fixing seat (21), a cylinder body (22), a connecting rod shaft fixing seat (24), a bending pipe clamping plate (33), and a clamping plate slide (30); the cylinder shaft fixing seat (21) is connected to the cylinder body (22), and the cylinder body (22) is provided with a piston rod (23), which is connected to the center distance connecting rod (25); the... A reverse thread connector (26) is provided on the center distance connecting rod (25) and is continuous with the connecting rod shaft fixing seat (24); the second nut (27) is connected to the piston rod (23) and the center distance connecting rod (25) on one side and to the straight thread connector (28) on the other side; the reverse thread bolt (29) is connected to the straight thread connector (28) on one side and to the clamp slide (30) on the other side; the clamp slide (30) is connected to the bent pipe clamp (33); the roller (31) is provided on the clamp slide (30); the spring fixing connector (32) is provided on the bent pipe clamp (33).

2. The lifting and bending device according to claim 1, characterized in that: The lower tapered roller bearing (16) is located under the upper plate (11) of the bearing seat and is connected to the reset rack (7).

3. The lifting and bending device according to claim 1, characterized in that: The upper tapered roller bearing (18) is connected to the rolled rack (13).

4. The lifting and bending device according to claim 1, characterized in that: The piston rod (23) is fixed by a reverse thread connector (26) on the connecting rod (25) at the center distance.

5. The lifting and bending device according to claim 1, characterized in that: The center distance connecting rod (25) and the connecting rod shaft fixing seat (24) are connected by a dovetail groove guide rail.

6. The lifting and bending device according to claim 1, characterized in that: The clamp slide (30) and the bent pipe clamp (33) are connected by a guide rail structure, and a roller (31) is provided at the connection between the two, with more than one roller (31).

7. The lifting and bending device according to claim 1, characterized in that: The spring fixing connector (32) is connected to the clamp slide (30) via a spring.

8. The lifting and bending device according to claim 1, characterized in that: The lower plate (6) of the bearing seat and the cylinder connector (5) are connected by a guide rail.

9. The lifting and bending device according to claim 1, characterized in that: The lower plate (6) of the bearing seat is provided with a limiting post, which is located on the outer side of the reset rack (7).

10. The lifting and bending device according to claim 1, characterized in that: The clamp slide (30) and the bend plate (20) are connected by a guide rail.

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