A device for processing a small bending radius elbow

Abstract

This utility model discloses a processing device for small bending radius pipes, belonging to the technical field of pipe bending equipment. It includes a worktable with a side plate fixed to its top surface. A through hole is opened on one side of the side plate, and a support plate is fixed thereon. One end of the pipe passes through the through hole. A top plate is fixed to the top surface of the support plate via two sliding rods, and a clamping plate is provided. Two first connecting blocks are fixed to the inner sides of both the top plate and the clamping plate, and both ends of the clamping plate are slidably connected to the sliding rods. Two driven blocks are provided above the clamping plate. Several first connecting blocks are connected to driven rods via first rotating shafts. Second connecting blocks are fixed to the top and bottom surfaces of the two driven blocks. The other end of the driven rod is movably connected to the second connecting block via a second rotating shaft. Clamping blocks are fixed to the inner sides of the support plate and the clamping plate. A driving assembly is also provided on one side of the side plate, and a bending assembly is fixed on the other side. Using this device, the clamping and fixing effect on the pipe is good, preventing displacement during processing and ensuring the bending effect.

Description

Technical Field

[0001] This utility model relates to the field of pipe bending equipment technology, and in particular to a processing device for pipe bending with a small bending radius. Background Technology

[0002] Small bending radius bends refer to bends where the ratio of the bending radius to the pipe's outer diameter is less than or equal to 1.5. These bends have irreplaceable advantages in space-constrained engineering applications due to their compact bending structure. From an engineering standard perspective, bends with a relative bending radius between 1.0 and 1.5 are considered small bending radius bends, while those with R / D ≤ 1.0 fall into the category of extremely small bending radius bends.

[0003] Existing small-radius pipe bending processing devices have limited clamping effect on pipes, which can easily lead to displacement during processing and thus affect the bending effect. Therefore, it is urgent to design a new type of small-radius pipe bending processing device to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a processing device for bending pipes with a small bending radius, so as to solve the problem that the existing small bending radius pipe bending processing devices have limited clamping effect on the pipes, which causes the pipes to deviate during the processing and thus affect the bending effect.

[0005] To solve the above technical problems, this utility model provides a processing device for small bending radius pipes, including a worktable and a pipe fitting. A side plate is fixed on the top surface of the worktable. A through hole is opened on one side of the side plate and a support plate is fixed thereon. One end of the pipe fitting passes through the through hole. A top plate is fixed to the top surface of the support plate by two sliding rods and a clamping plate is provided. Two first connecting blocks are fixed to the inner sides of the top plate and the clamping plate, and both ends of the clamping plate are slidably connected to the sliding rods. Two driven blocks are provided above the clamping plate. A plurality of first connecting blocks are movably connected to driven rods through first rotating shafts. Second connecting blocks are fixed to the top and bottom surfaces of the two driven blocks. The other end of the driven rod is movably connected to the second connecting block through a second rotating shaft. Clamping blocks are fixed to the inner sides of the support plate and the clamping plate.

[0006] One side of the side plate is also provided with a drive assembly that drives the two driven blocks to move outward or inward simultaneously, and a bending assembly is fixed on the other side.

[0007] As a further improvement to the above technical solution:

[0008] Optionally, the drive assembly includes a drive block, two third connecting blocks, and bolts. The two third connecting blocks are movably connected to the drive rods via third rotating shafts and are respectively fixed to the inner sides of the two driven blocks. The drive block is located below the top plate, and fourth connecting blocks are fixed on both sides of it. A bearing is fixed on its top surface. The two fourth connecting blocks are movably connected to the other ends of the two drive rods via fourth rotating shafts. The bolts are threaded to the top plate, and their bottom ends are connected to the bearings.

[0009] Optionally, the bending assembly includes a cylinder and a bending plate. The cylinder is horizontally positioned and fixedly connected to the side plate via a connecting seat. The bending plate is located on one side of the pipe and connected to the piston rod of the cylinder.

[0010] Optionally, both clamping blocks have arc-shaped grooves on their inner sides.

[0011] Optionally, the arc-shaped groove is coated with an anti-slip coating.

[0012] Optionally, each of the four corners of the bottom surface of the workbench is fixed with a column.

[0013] In the small bending radius pipe processing device provided by this utility model, a side plate is fixed on the top surface of the worktable, a through hole is opened on one side of the side plate and a support plate is fixed thereon, one end of the pipe passes through the through hole, a top plate is fixed on the top surface of the support plate by two sliding rods and a clamping plate is provided, two first connecting blocks are fixed on the inner side of the top plate and the clamping plate and both ends of the clamping plate are slidably connected to the sliding rods, two driven blocks are provided above it, several first connecting blocks are movably connected to driven rods through first rotating shafts, second connecting blocks are fixed on the top and bottom surfaces of the two driven blocks, the other end of the driven rod is movably connected to the second connecting block through a second rotating shaft, clamping blocks are fixed on the inner side of the support plate and the clamping plate, a driving assembly is also provided on one side of the side plate to drive the two driven blocks to move outward or inward simultaneously, and a bending assembly is fixed on the other side; using this device, the clamping and fixing effect of the pipe is good, avoiding its displacement during processing and ensuring its bending effect. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the processing device for small bending radius pipes provided by this utility model;

[0015] Figure 2 This is a top view of the processing device for small bending radius pipes provided by this utility model. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is considered "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is considered "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0018] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0019] This utility model provides a processing device for bending pipes with small bending radius, the structure of which is as follows: Figure 1 , Figure 2 As shown, the device includes a workbench 1 and a pipe fitting 2. A side plate 3 is fixed to the top surface of the workbench 1. A through hole 4 is opened on one side of the side plate 3 and a support plate 5 is fixed thereon. One end of the pipe fitting 2 passes through the through hole 4. A top plate 7 is fixed to the top surface of the support plate 5 by two sliding rods 6 and a clamping plate 8 is provided. Two first connecting blocks 9 are fixed to the inner side of the top plate 7 and the clamping plate 8, and both ends of the clamping plate 8 are slidably connected to the sliding rods 6. Two driven blocks 12 are provided above it. Several first connecting blocks 9 are movably connected to driven rods 11 by first rotating shafts 10. Second connecting blocks 14 are fixed to the top and bottom surfaces of the two driven blocks 12. The other end of the driven rods 11 is movably connected to the second connecting blocks 14 by second rotating shafts 16. Clamping blocks 22 are fixed to the inner side of the support plate 5 and the clamping plate 8. A driving assembly for driving the two driven blocks 12 to move outward or inward simultaneously is provided on one side of the side plate 3, and a bending assembly is fixed on the other side. The use of a small bending radius pipe bending device provides better clamping and fixing of the pipe fittings, preventing them from shifting during processing and ensuring the bending effect.

[0020] Specifically, the drive assembly includes a drive block 13, two third connecting blocks 15, and a bolt 18. The two third connecting blocks 15 are movably connected to the drive rods 29 via the third rotating shaft 17 and are respectively fixed to the inner side of the two driven blocks 12. The drive block 13 is located below the top plate 7, and four connecting blocks 20 are fixed on both sides of it. A bearing 19 is fixed on its top surface. The two fourth connecting blocks 20 are movably connected to the other end of the two drive rods 29 via the fourth rotating shaft 21. The bolt 18 is threadedly connected to the top plate 7, and its bottom end is connected to the bearing 19.

[0021] Specifically, the bending assembly includes a cylinder 27 and a bending plate 28. The cylinder 27 is horizontally arranged and fixedly connected to the side plate 3 via a connecting seat 26. The bending plate 28 is located on one side of the pipe fitting 2 and is connected to the piston rod of the cylinder 27.

[0022] Furthermore, both clamping blocks 22 have arc-shaped grooves 24 on their inner sides.

[0023] Furthermore, the arc-shaped groove 24 is coated with an anti-slip coating.

[0024] Furthermore, each of the four corners of the bottom surface of the workbench 1 is fixed with a column 25.

[0025] Operating procedures

[0026] 1. Clamping the pipe fitting: Pass one end of the pipe fitting 2 through the through hole 4 of the side plate 3, so that it is located between the support plate 5 and the clamping plate 8. Rotate the bolt 18 to drive the drive block 13 to move down, and push the two driven blocks 12 to move outward through the drive rod 29. The driven rod 11 moves accordingly and pulls the clamping plate 8 along the slide rod 6 to move closer to the support plate 5, so that the arc groove 24 of the clamping block 22 tightly clamps the pipe fitting 2.

[0027] 2. Bending process: Start cylinder 27 to push bending plate 28 to move horizontally, apply lateral force to the protruding end of pipe 2, and bend it around the clamping part to form a small bending radius bend.

[0028] 3. Reset and remove parts: After bending is completed, the piston rod of cylinder 27 retracts, and the bolt 18 is rotated in the opposite direction to loosen the clamping plate 8 and remove the processed bent pipe.

[0029] Beneficial effects

[0030] The small bending radius pipe bending processing device provided by this technical solution significantly improves the accuracy, stability and efficiency of pipe bending processing by optimizing the design of the clamping mechanism (support plate 5, clamping plate 8, slide rod 6, clamping block 22), drive assembly (drive block 13, third connecting block 15, bolt 18, drive rod 29) and bending assembly (cylinder 27, bending plate 28).

[0031] 1. Improved clamping stability: The sliding connection structure between the slide rod 6 and the clamping plate 8 ensures the linearity and stability of the clamping movement, avoiding the offset problem caused by mechanical backlash in traditional clamping methods; the driven rod 11 and the drive assembly (first connecting block 9, second connecting block 14, first rotating shaft 10, second rotating shaft 16) work together to distribute the clamping force evenly, preventing the pipe 2 from deforming or being damaged on the surface due to uneven force during bending; the arc groove 24 of the clamping block 22, combined with the anti-slip coating, greatly enhances the clamping friction, effectively preventing the pipe 2 from slipping or rotating during processing, and ensuring precise control of the bending radius.

[0032] 2. Precise and efficient drive adjustment: Bolt 18 drives drive block 13 through bearing 19, which drives drive rod 29 (third rotating shaft 17, fourth rotating shaft 21) to push driven block 12 to move synchronously, realizing precise opening and closing of clamping plate 8. This mechanical transmission method has a simple and reliable structure and is easy to operate.

[0033] 3. Stable and controllable bending process: The horizontally set cylinder 27 drives the bending plate 28 to apply a uniform lateral force to the pipe 2, avoiding local stress concentration and reducing the risk of uneven pipe wall thickness or cracking.

[0034] In summary, this device solves problems such as unstable clamping, low forming accuracy, and insufficient efficiency in small-radius pipe bending by optimizing the clamping mechanism, precisely adjusting the drive components, and ensuring stable force application by the bending components. Its simple structure, convenient operation, and strong adaptability give it significant advantages in high-precision pipe bending fields such as automotive exhaust pipes and hydraulic lines, greatly reducing scrap rates and improving production efficiency.

[0035] The above description is only a description of the preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the claims.

Claims

1. A processing device for bending pipes with small bending radius, comprising a worktable (1) and a pipe fitting (2), characterized in that, The workbench (1) has a side plate (3) fixed on its top surface. The side plate (3) has a through hole (4) on one side and a support plate (5) fixed thereon. One end of the pipe (2) passes through the through hole (4). The support plate (5) has a top plate (7) fixed on its top surface by two sliding rods (6) and a clamping plate (8). The top plate (7) and the clamping plate (8) have two first connecting blocks (9) fixed on their inner sides. Both ends of the clamping plate (8) are slidably connected to the sliding rods (6). Two driven blocks (12) are provided above it. Several first connecting blocks (9) are movably connected to driven rods (11) through a first rotating shaft (10). The top and bottom surfaces of the two driven blocks (12) are fixed with second connecting blocks (14). The other end of the driven rod (11) is movably connected to the second connecting block (14) through a second rotating shaft (16). The support plate (5) and the clamping plate (8) have clamping blocks (22) fixed on their inner sides. The side plate (3) is also provided with a drive assembly on one side to drive the two driven blocks (12) to move outward or inward simultaneously, and a bending assembly is fixed on the other side.

2. The processing device for small bending radius pipes as described in claim 1, characterized in that, The drive assembly includes a drive block (13), two third connecting blocks (15) and a bolt (18). The two third connecting blocks (15) are movably connected to the drive rods (29) through the third rotating shaft (17) and are respectively fixed inside the two driven blocks (12). The drive block (13) is located below the top plate (7), and a fourth connecting block (20) is fixed on both sides of it. A bearing (19) is fixed on its top surface. The two fourth connecting blocks (20) are movably connected to the other end of the two drive rods (29) through the fourth rotating shaft (21). The bolt (18) is threaded to the top plate (7) and its bottom end is connected to the bearing (19).

3. The processing apparatus for small bending radius pipes as described in claim 1, characterized in that, The bending assembly includes a cylinder (27) and a bending plate (28). The cylinder (27) is horizontally arranged and fixedly connected to the side plate (3) via a connecting seat (26). The bending plate (28) is located on one side of the pipe (2) and connected to the piston rod of the cylinder (27).

4. The processing apparatus for small bending radius pipes as described in claim 1, characterized in that, Both clamping blocks (22) have arc-shaped grooves (24) on their inner sides.

5. The processing apparatus for small bending radius pipes as described in claim 4, characterized in that, The arc-shaped groove (24) is coated with an anti-slip coating.

6. The processing apparatus for small bending radius pipes as described in claim 1, characterized in that, The workbench (1) has four columns (25) fixed at the four corners of its bottom surface.

Images