A thin-walled elbow pipe bending forming device

Abstract

The utility model relates to a pipe bending technology field especially relates to a kind of thin-walled elbow bending forming device.Thin-walled elbow bending forming device includes limit frame, and two L-shaped connecting plates are fixedly installed on limit frame, and installation hole is set on two L-shaped connecting plates, two symmetrical arc limit sliding slots are set on limit frame, and scale bar is equipped on limit frame and cooperates with arc limit sliding slot, two arc limit sliding slots are slidably connected with slide post, and two slide posts are connected with the connecting rod extending to the outside of arc limit sliding slot, and connecting rod end is installed with connecting structure, and limit structure is installed on limit frame.The scale bar on the limit frame cooperates with the arc limit sliding slot, which can directly position the limit structure accurately according to the target angle, avoiding the angle deviation caused by manual experience estimation.The limit structure is forcibly terminated by physical blocking to prevent the swing arm from rotating, ensuring that the angle of the bent pipe is consistent each time and ensuring the quality of the pipe bending process.

Description

Technical Field

[0001] This utility model relates to the field of pipe bending technology, and in particular to a thin-walled pipe bending and forming device. Background Technology

[0002] Pipe bending is a process that uses physical deformation to transform straight pipes into pipes of a specific angle or shape. It is widely used in aerospace, automobile manufacturing, building pipelines, petrochemical and other fields. Its core objective is to achieve the required bending shape while ensuring the dimensional accuracy, surface quality and mechanical properties of the pipe.

[0003] The thin-walled pipe bending and forming device disclosed in CN222326346U is designed as a manual pipe bending device to bend thin-walled pipes. This solves the problem that thin-walled pipes are difficult to manufacture in one go by ordinary machining due to their thin walls and materials, and all require special methods to reprocess them into the required size and structure. However, in actual operation, the thin-walled pipe bending and forming device disclosed in CN222326346U involves manual bending of the thin-walled pipe using the first and second rocker arms. The force during the bending process is difficult to control, which can lead to deviations in the bending angle of the thin-walled pipe and affect the bending quality of the thin-walled pipe.

[0004] Therefore, it is necessary to provide a new thin-walled tube bending and forming device to solve the above-mentioned technical problems. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a new thin-walled pipe bending and forming device.

[0006] The thin-walled tube bending forming device provided by this utility model includes: a limiting frame, on which two L-shaped connecting plates are fixedly installed, and each of the two L-shaped connecting plates is provided with a mounting hole. The limiting frame is provided with two symmetrical arc-shaped limiting grooves, and the limiting frame is provided with a scale strip that cooperates with the arc-shaped limiting grooves. Each of the two arc-shaped limiting grooves is slidably connected with a sliding column, and each of the two sliding columns is connected with a connecting rod extending outside the arc-shaped limiting groove. A connecting structure is installed at the end of the connecting rod, and a limiting structure is installed on the limiting frame to limit the sliding distance of the connecting rod.

[0007] Preferably, the connection structure includes a mating plate rotatably connected to the end of the connecting rod, and the mating plate is threaded with a connecting bolt.

[0008] Preferably, the bottom of the sliding column is provided with a rolling groove, and a ball bearing is rolled in the rolling groove.

[0009] Preferably, the limiting structure includes a U-shaped slide sleeve fitted onto and slidably connected to the limiting frame, wherein a threaded post is threadedly connected to the U-shaped slide and abuts against the side wall of the limiting frame, and the threaded post and the scale bar are located on the same side.

[0010] Preferably, each of the threaded columns has multiple rotating rods fixedly installed at its upper end, arranged in a circular pattern.

[0011] Preferably, a rubber pad is fixedly installed at the lower end of the threaded post.

[0012] Preferably, a buffer pad is fixedly installed on the inner wall of the lower side of the U-shaped carriage, and the buffer pad is close to the connecting rod and extends to the outside of the U-shaped carriage.

[0013] Preferably, the connecting rod is rotatably connected to the sliding column.

[0014] Compared with related technologies, the thin-walled tube bending and forming device provided by this utility model has the following beneficial effects:

[0015] The scale strip on the limit frame of this utility model cooperates with the arc-shaped limit groove, which can directly and accurately position the limit structure according to the target angle, avoiding the angle deviation caused by manual experience estimation. The limit structure forcibly stops the rocker arm rotation by physical blocking, ensuring that the angle of each pipe bend is completely consistent and guaranteeing the quality of pipe bending processing. Attached Figure Description

[0016] Figure 1 A schematic diagram of a preferred embodiment of the thin-walled tube bending and forming device provided by this utility model;

[0017] Figure 2 for Figure 1 The diagram shows the structure of the bottom of the limiting frame;

[0018] Figure 3 for Figure 1 The diagram shows the structural schematic of the connection structure.

[0019] Figure 4 for Figure 1 The diagram shows the structure of the limiting structure.

[0020] The following are the labels in the diagram: 1. Limiting frame; 11. Arc-shaped limiting groove; 2. L-shaped connecting plate; 21. Mounting hole; 3. Scale strip; 4. Connecting structure; 41. Sliding column; 411. Roller groove; 42. Connecting rod; 43. Butt plate; 44. Connecting bolt; 45. Ball bearing; 5. Limiting structure; 51. U-shaped slide; 52. Threaded column; 53. Buffer pad; 54. Rotating rod; 55. Rubber pad. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0022] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0023] Please see Figures 1 to 4 This utility model provides a thin-walled tube bending forming device, which includes: a limiting frame 1, two L-shaped connecting plates 2 fixedly installed on the limiting frame 1, and each of the two L-shaped connecting plates 2 is provided with a mounting hole 21. The limiting frame 1 is provided with two symmetrical arc-shaped limiting slide grooves 11, and the limiting frame 1 is provided with a scale strip 3 that cooperates with the arc-shaped limiting slide grooves 11. Each of the two arc-shaped limiting slide grooves 11 is slidably connected with a sliding column 41, and each of the two sliding columns 41 is connected with a connecting rod 42 extending outside the arc-shaped limiting slide groove 11. A connecting structure 4 is installed at the end of the connecting rod 42, and a limiting structure 5 is installed on the limiting frame 1 to limit the sliding distance of the connecting rod 42.

[0024] It should be noted that: In this utility model, the two L-shaped connecting plates 2 on the limiting frame 1 are connected to the base plate of the thin-walled pipe bending forming device provided in CN222326346U. The mounting holes 21 on the L-shaped connecting plates 2 are aligned with the through holes on the base plate. The two are connected and fixed by external bolts. The two connecting rods 42 are respectively fixed to the first and second supports of the thin-walled pipe bending forming device provided in CN222326346U by the connecting structure 4. According to the required bending angle, the limiting structure 5 is moved along the scale strip 3 to the corresponding scale position and then locked. In the thin-walled pipe bending forming device provided in CN222326346U, the first support is used. When the first and second rocker arms bend the pipe, they drive the sliding column 41, connected by the connecting rod 42, to slide in the arc-shaped limiting groove 11 on the limiting frame 1. When the sliding column 41 slides to the limiting structure 5, the connecting rod 42 is restricted and blocked by the limiting structure 5. That is, the limiting structure 5 restricts the rotation angle of the first and second rocker arms, so that the pipe is bent to the required angle. The scale strip 3 on the limiting frame 1 of this utility model cooperates with the arc-shaped limiting groove 11 to directly and accurately position the limiting structure 5 according to the target angle, avoiding the angle deviation caused by manual experience estimation. The limiting structure 5 forcibly stops the rotation of the rocker arms by physical blocking, ensuring that the bending angle of each pipe is completely consistent and ensuring the quality of pipe bending processing.

[0025] In this invention, the limiting frame 1 is elliptical in shape and located above the first and second supports in the thin-walled pipe bending forming device disclosed in CN222326346U. It does not hinder the clamping and bending of the pipe, nor does it hinder the use of the first and second rocker arms. The axes of the two arc-shaped limiting grooves 11 are respectively on the same axis as the rotation centers of the first and second rocker arms in the thin-walled pipe bending forming device disclosed in CN222326346U, ensuring that the sliding column 41 slides smoothly in the arc-shaped limiting grooves 11. The limiting frame 1 also does not hinder the use of the inclined groove in the thin-walled pipe bending forming device disclosed in CN222326346U.

[0026] In the embodiments of this utility model, please refer to Figure 1 and Figure 3 The connecting structure 4 includes a mating plate 43 rotatably connected to the end of the connecting rod 42, and a connecting bolt 44 is threaded onto the mating plate 43;

[0027] It should be noted that when connecting the connecting rod 42 to the first and second supports in the thin-walled tube bending forming device provided in CN222326346U, threaded holes adapted to the connecting bolts 44 need to be opened on the first and second supports in the thin-walled tube bending forming device provided in CN222326346U. The mating plate 43 is fixed to the first and second supports with threaded holes by the connecting bolts 44, and then the two sliding columns 41 are mated with the first and second supports respectively.

[0028] The bottom of the sliding column 41 is provided with a rolling groove 411, and a ball bearing 45 is rolled in the rolling groove 411. The ball bearing 45 can roll along the arc-shaped limiting groove 11, changing the sliding friction between the sliding column 41 and the bottom of the arc-shaped limiting groove 11 into rolling friction, reducing the friction of the sliding column 41 in the arc-shaped limiting groove 11, and making the first rocker arm and the second rocker arm in the thin-walled bending forming device provided in CN222326346U drive the sliding column 41 to slide more smoothly.

[0029] The connecting rod 42 is rotatably connected to the sliding column 41, making the sliding column 41 slide more smoothly in the thin-walled pipe bending forming device disclosed in CN222326346U.

[0030] In the embodiments of this utility model, please refer to Figure 1 and Figure 4 The limiting structure 5 includes a loop-shaped slide 51 sleeved on the limiting frame 1 and slidably connected thereto. A threaded post 52 that abuts against the side wall of the limiting frame 1 is threadedly connected to the loop-shaped slide 51. The threaded post 52 and the scale bar 3 are located on the same side.

[0031] It should be noted that the loop slide 51 can slide along the limit frame 1. By tightening or loosening the threaded column 52, the end of the threaded column 52 is made to abut or move away from the surface of the limit frame 1, thereby limiting or unlocking the loop slide 51. When used with the scale strip 3, the bending angle of the pipeline can be adjusted to improve the applicability of the device.

[0032] Each threaded post 52 has multiple rotating rods 54 fixedly installed at its upper end, which facilitates the rotation of the threaded post 52 by the staff.

[0033] Among them, a rubber pad 55 is fixedly installed at the lower end of the threaded post 52 to prevent the end of the threaded post 52 from directly contacting and abutting against the limit frame 1, thereby causing damage to the surface of the limit frame 1;

[0034] A buffer pad 53 is fixedly installed on the lower inner wall of the U-shaped slide 51. The buffer pad 53 is close to the connecting rod 42 and extends to the outside of the U-shaped slide 51. By setting the buffer pad 53, the first rocker arm and the second rocker arm in the thin-walled pipe bending forming device disclosed in CN222326346U are buffered to avoid excessive bending force and direct collision between the connecting rod 42 and the U-shaped slide 51.

[0035] The circuits and controls involved in this utility model are all existing technologies, and will not be described in detail here.

[0036] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A thin-walled tube bending forming device, comprising a limiting frame (1), characterized in that: Two L-shaped connecting plates (2) are fixedly installed on the limiting frame (1), and each of the two L-shaped connecting plates (2) is provided with a mounting hole (21). Two symmetrical arc-shaped limiting slide grooves (11) are provided on the limiting frame (1), and a scale strip (3) that cooperates with the arc-shaped limiting slide grooves (11) is provided on the limiting frame (1). Sliding columns (41) are slidably connected in each of the two arc-shaped limiting slide grooves (11), and connecting rods (42) extending out of the arc-shaped limiting slide grooves (11) are connected to each of the two sliding columns (41). A connecting structure (4) is installed at the end of the connecting rod (42), and a limiting structure (5) that limits the sliding distance of the connecting rod (42) is installed on the limiting frame (1).

2. The thin-walled tube bending and forming device according to claim 1, characterized in that, The connecting structure (4) includes a mating plate (43) rotatably connected to the end of the connecting rod (42), and a connecting bolt (44) is threaded onto the mating plate (43).

3. The thin-walled tube bending and forming device according to claim 1, characterized in that, The bottom of the sliding column (41) is provided with a rolling groove (411), and a ball bearing (45) is rolled in the rolling groove (411).

4. The thin-walled tube bending and forming device according to claim 1, characterized in that, The limiting structure (5) includes a loop-shaped slide (51) sleeved on the limiting frame (1) and slidably connected thereto. The loop-shaped slide (51) is threaded with a threaded post (52) that abuts against the side wall of the limiting frame (1). The threaded post (52) and the scale bar (3) are located on the same side.

5. The thin-walled tube bending and forming device according to claim 4, characterized in that, Each of the threaded posts (52) has multiple rotating rods (54) fixedly installed around its upper end.

6. The thin-walled tube bending and forming device according to claim 4, characterized in that, A rubber pad (55) is fixedly installed at the lower end of the threaded post (52).

7. The thin-walled tube bending and forming device according to claim 4, characterized in that, A buffer pad (53) is fixedly installed on the lower inner wall of the U-shaped carriage (51), and the buffer pad (53) is close to the connecting rod (42) and extends to the outside of the U-shaped carriage (51).

8. The thin-walled tube bending and forming device according to claim 1, characterized in that, The connecting rod (42) is rotatably connected to the sliding column (41).

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