Pipe bending device for automobile pipe fitting machining

By employing a rotatable clamping mold structure and positioning pin limiter in the automotive pipe fitting processing device, the problem of not being able to simultaneously bend two pipe fittings in the existing technology has been solved, enabling rapid switching and efficient production.

CN121847643APending Publication Date: 2026-04-14ZHEJIANG XINLONG IND
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-12-31
Publication Date
2026-04-14

AI Technical Summary

Technical Problem

Existing automotive pipe processing equipment cannot achieve simultaneous bending of two pipes, and the clamping mold needs to be disassembled when changing processing modes, which is cumbersome and laborious.

Method used

The rotatable clamping structure, combined with the positioning pin limit, enables quick switching between single and double pipe fittings, avoids clamping disassembly, and improves adaptability and production efficiency.

Benefits of technology

It enables rapid switching between single and dual pipe fittings, improving processing flexibility and production efficiency while reducing operational complexity.

✦ Generated by Eureka AI based on patent content.

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Abstract

The pipe bending device for automobile pipe fitting machining comprises a workbench, a supporting column is installed on the workbench, a first fixed die and a second fixed die are installed on the upper portion of the supporting column, a rotating piece is rotationally arranged on the supporting column, a moving mechanism is arranged on the upper portion of the rotating piece, and the moving mechanism is in driving connection with a moving block. The moving mechanism can drive the moving block to be close to or away from the supporting column, a first clamping die and a second clamping die are installed on the moving block, and the driving mechanism can drive the rotating piece to rotate around the supporting column.
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Description

Technical Field

[0001] This invention relates to the field of pipe processing technology, and more specifically, to a pipe bending device for processing automotive pipes. Background Technology

[0002] Automotive tubular components are key parts in the chassis, powertrain, and body structure of automobiles. Their machining accuracy and forming quality directly affect the safety, reliability, and assembly efficiency of the vehicle. Tube bending, as a core process in automotive tubular component manufacturing, places extremely high demands on the flexibility, machining accuracy, stability, and adaptability of bending equipment. Most bending equipment uses a single clamping mold structure, which can only handle single tubular components and cannot meet the processing requirements of simultaneously bending two tubular components. Switching processing modes requires disassembling and replacing the clamping mold, which is cumbersome and labor-intensive. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a pipe bending device for processing automotive pipe parts.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] This invention discloses a pipe bending device for processing automotive pipe parts, including a worktable, a support column mounted on the worktable, a fixed mold 1 and a fixed mold 2 mounted on the upper part of the support column, a rotating component rotatably mounted on the support column, a moving mechanism mounted on the upper part of the rotating component, a moving block driven by the moving mechanism, the moving mechanism can drive the moving block to move closer to or away from the support column, a clamping mold 1 and a clamping mold 2 mounted on the moving block, and a driving mechanism that can drive the rotating component to rotate around the support column.

[0006] Furthermore, the rotating component includes a second rotating ring, which is sleeved on the support column. The driving mechanism includes a gear ring, which is installed on the lower part of the second rotating ring. The driving mechanism also includes a drive motor, which is connected to a drive gear, which meshes with the gear ring.

[0007] Furthermore, a limiting ring is connected to the outer periphery of the support column, and an annular groove is opened on the inner periphery of the rotating ring two. The limiting ring is set in the annular groove. The position of the rotating ring two is supported and limited by the cooperation of the limiting ring and the annular groove, so that the rotating ring two can rotate smoothly.

[0008] Furthermore, the rotating component includes a support plate connected to the outer periphery of the rotating ring II. The moving mechanism includes a lead screw motor and a lead screw. The lead screw motor is mounted on the end face of the support plate, and the lead screw is rotatably mounted on the support plate. The lead screw motor drives the lead screw, and a lead screw slider is mounted on the lead screw. The lead screw slider is connected to the moving block.

[0009] Furthermore, the movable block includes a mounting post, clamping mold one and clamping mold two are sleeved on the mounting post, clamping mold one has a through hole one, clamping mold two has a through hole two, the movable block has a fixing hole, and also includes a positioning pin, which can pass through through hole two and through hole one and be inserted into the fixing hole.

[0010] Furthermore, the mounting post includes a threaded section located at the top of the outer periphery of the mounting post, and a lock nut is threaded onto the threaded section.

[0011] Furthermore, it also includes a clamping mechanism, which includes a movable clamping block and a fixed clamping block. A guide rail is provided on the worktable, and a sliding block is slidably arranged on the guide rail. The movable clamping block is installed on the sliding block. A linear driver is provided on the guide rail, and the linear driver drives the sliding block.

[0012] Furthermore, it also includes two linear actuators, each connected to a mandrel, and a support base is provided on the worktable, with the two linear actuators fixedly mounted on the support base.

[0013] Furthermore, a support ring is fixedly connected to the outer periphery of the support column, and the rotating component includes a rotating ring one, which is fitted onto the support column and located above the support ring. The rotating ring one can rotate around the support column, and a reinforcing rib is connected to the outer periphery of the rotating ring one. The other end of the reinforcing rib is connected to the bottom of the support plate.

[0014] The beneficial effects of this invention are as follows: By using the rotatable cooperation of clamping mold one and clamping mold two, combined with the limiting of the positioning pin, a rapid switching between single pipe bending and simultaneous bending of double pipes is achieved; the positioning pin can only be inserted and fixed at the preset work position, effectively avoiding operational errors; the switching process does not require disassembling the clamping mold, greatly improving the adaptability of the device to different processing requirements and significantly improving production efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of a pipe bending device for processing automotive pipe parts in this embodiment.

[0016] Figure 2 This is a cross-sectional view of the pipe bending device for processing automotive pipe parts in this embodiment;

[0017] Figure 3 This is a schematic diagram of the installation of clamping mold one and clamping mold two in this embodiment;

[0018] Figure 4 for Figure 2 Enlarged diagram of point A in the middle.

[0019] Reference numerals: 1. Workbench; 2. Support column; 3. Fixed mold one; 4. Fixed mold two; 5. Rotating component; 6. Gear ring; 7. Drive motor; 8. Drive gear; 9. Moving block; 10. Clamping mold one; 11. Clamping mold two; 12. Guide rail; 13. Sliding block; 14. Linear actuator one; 15. Moving clamping block; 16. Fixed clamping block; 17. Support base; 18. Linear actuator two; 19. Mandrel; 20. Rotating frame; 21. Support ring; 22. Rotating ring one; 23. Reinforcing rib; 24. Support plate; 25. Screw motor; 26. Screw; 27. Screw slider; 28. Mounting column; 29. ​​Locking nut; 30. Positioning pin; 31. Fixing hole; 32. Through hole two; 33. Through hole one; 34. Limiting ring; 35. Ring groove; 36. Rotating ring; 37. Threaded section. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] like Figures 1-4 As shown, a pipe bending device for processing automotive pipe fittings includes a worktable 1, on which a support column 2 is mounted vertically. A fixed mold 3 and a fixed mold 4 are mounted on the upper part of the support column 2. A rotating component 5 is rotatably mounted on the support column 2, and a moving mechanism is mounted on the upper part of the rotating component 5. The moving mechanism is driven by a moving block 9, which can drive the moving block 9 to move closer to or away from the support column 2. A clamping mold 10 and a clamping mold 2 11 are mounted on the moving block 9. The device can be used alone with the clamping mold 10 and the fixed mold 3, or alone with the clamping mold 2 11 and the fixed mold 2 4, or simultaneously with the clamping mold 10 and the fixed mold 3, and the clamping mold 2 11 and the fixed mold 2 4, to bend the pipe fittings.

[0022] It also includes a drive mechanism, which can drive the rotating part 5 to rotate clockwise around the support column 2, and bend the pipe by acting on the clamping mold 10 and clamping mold 21.

[0023] Furthermore, the rotating component 5 includes a rotating ring 36, which is sleeved on the support column 2 and can rotate on the support column 2. The driving mechanism includes a gear ring 6, which is installed on the lower part of the rotating ring 36. The driving mechanism also includes a drive motor 7, which drives a drive gear 8 connected to it. The drive gear 8 meshes with the gear ring 6.

[0024] The motor shaft of the drive motor 7 is connected to the drive gear 8. A rotating frame 20 is connected to the upper part of the worktable 1. The motor shaft passes through the rotating frame 20 and supports the motor shaft, which can prevent the drive gear 8 from shifting during rotation.

[0025] Furthermore, a limiting ring 34 is connected to the outer periphery of the support column 2, and an annular groove 35 is opened on the inner periphery of the rotating ring 2 36. The limiting ring 34 is set in the annular groove 35. The position of the rotating ring 2 36 is supported and limited by the cooperation of the limiting ring 34 and the annular groove 35, so that the rotating ring 2 36 can rotate smoothly.

[0026] Furthermore, the rotating component 5 includes a support plate 24, which is connected to the outer periphery of the rotating ring 36. The moving mechanism includes a lead screw motor 25 and a lead screw 26. The lead screw motor 25 is mounted on the end face of the support plate 24, and the lead screw 26 is rotatably mounted on the support plate 24. The lead screw motor 25 drives the lead screw 26. A lead screw slider 27 is mounted on the lead screw 26, and the lead screw slider 27 is connected to the moving block 9.

[0027] Furthermore, the movable block 9 includes a mounting post 28, and clamping mold one 10 and clamping mold two 11 are sleeved on the mounting post 28, and clamping mold one 10 and clamping mold two 11 are rotatable around the mounting post 28.

[0028] The clamping mold 10 has two symmetrical through holes 33, the clamping mold 2 11 has two symmetrical through holes 32, and the moving block 9 has two symmetrical fixing holes 31. The distances from the center of the through hole 32 to the center of the mounting post 28, the distances from the center of the through hole 33 to the center of the mounting post 28, and the distances from the center of the fixing hole 31 to the center of the mounting post 28 are equal. The clamping mold 9 also includes a positioning pin 30, which can pass through the through hole 32 and the through hole 33 and be inserted into the fixing hole 31.

[0029] When the ends of clamping mold 10 and clamping mold 21 with semicircular grooves are 180 degrees apart and one of them faces the support column 2, the positioning pin 30 can be inserted to fix their positions. In this case, clamping mold 10 or clamping mold 21 can be used alone to bend the corresponding pipe fitting. When the ends of clamping mold 10 and clamping mold 21 with semicircular grooves are on the same side, the positioning pin 30 can be inserted to fix their positions. In this case, clamping mold 10 and clamping mold 211 can be used simultaneously to bend the corresponding two pipe fittings. When clamping mold 10 and clamping mold 21 are in other positions, the positioning pin 30 cannot be inserted for fixation.

[0030] Furthermore, the mounting post 28 includes a threaded section 37 located at the top of the outer periphery of the mounting post 28. A locking nut 29 is threaded onto the threaded section 37. By tightening the locking nut 29, the locking nut 29 acts on clamping mold 2 11 and clamping mold 10, thereby pressing and fixing clamping mold 2 11 and clamping mold 10. This further strengthens the fixing and prevents clamping mold 2 11 and clamping mold 10 from shifting.

[0031] Furthermore, it also includes a clamping mechanism, which includes a movable clamping block 15 and a fixed clamping block 16. A guide rail 12 is provided on the worktable 1, and a sliding block 13 is slidably disposed on the guide rail 12. The movable clamping block 15 is mounted on the sliding block 13. A linear actuator 14 is provided on the guide rail 12, and the linear actuator 14 drives the sliding block 13. By driving the sliding block 13 to move through the linear actuator 14, the movable clamping block 15 moves closer to the fixed clamping block 16. The movable clamping block 15 and the fixed clamping block 16 can cooperate to clamp the pipe fitting, thereby fixing the pipe fitting.

[0032] Furthermore, it also includes two linear actuators 18, each connected to a mandrel 19. Before bending, the linear actuators 18 drive the mandrel 19 to move towards the pipe, so that the mandrel 19 is inserted into the pipe to support it, making the pipe less prone to deformation when bent. The appropriate mandrel 19 is used depending on the specific pipe being bent.

[0033] A support base 17 is provided on the worktable 1, and the linear driver 2 18 is fixedly installed on the support base 17.

[0034] Furthermore, a support ring 21 is fixedly connected to the outer periphery of the support column 2. The rotating component 5 includes a rotating ring 22, which is sleeved on the support column 2 and located above the support ring 21. The rotating ring 22 can rotate around the support column 2. A reinforcing rib 23 is connected to the outer periphery of the rotating ring 22, and the other end of the reinforcing rib 23 is connected to the bottom of the support plate 24. The position where the reinforcing rib 23 connects to the support plate 24 is located on the support plate 24 away from the support column 2. The reinforcing rib 23 can support the support plate 24, so that the support plate 24 can remain horizontal during rotation.

[0035] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A pipe bending device for processing automotive pipe fittings, characterized in that, The system includes a workbench (1), on which a support column (2) is mounted. A fixed mold (3) and a fixed mold (4) are mounted on the upper part of the support column (2). A rotating component (5) is rotatably mounted on the support column (2). A moving mechanism is provided on the upper part of the rotating component (5). The moving mechanism drives a moving block (9) to move closer to or away from the support column (2). A clamping mold (10) and a clamping mold (11) are mounted on the moving block (9). The system also includes a driving mechanism that drives the rotating component (5) to rotate around the support column (2).

2. The bending device for processing automotive pipe fittings according to claim 1, characterized in that, The rotating component (5) includes a rotating ring II (36), which is sleeved on the support column (2). The driving mechanism includes a gear ring (6), which is installed on the lower part of the rotating ring II (36). The driving mechanism also includes a driving motor (7), which drives a driving gear (8) connected to it. The driving gear (8) meshes with the gear ring (6).

3. The bending device for processing automotive pipe fittings according to claim 2, characterized in that, The support column (2) is connected to a limiting ring (34) on its outer periphery, and the rotating ring (36) has an annular groove (35) on its inner periphery. The limiting ring (34) is located in the annular groove (35).

4. The bending device for processing automotive pipe fittings according to claim 1, characterized in that, The rotating component (5) includes a support plate (24) connected to the outer periphery of the rotating ring (36). The moving mechanism includes a lead screw motor (25) and a lead screw (26). The lead screw motor (25) is mounted on the end face of the support plate (24). The lead screw (26) is rotatably mounted on the support plate (24). The lead screw motor (25) drives the lead screw (26). A lead screw slider (27) is mounted on the lead screw (26). The lead screw slider (27) is connected to the moving block (9).

5. The bending device for processing automotive pipe fittings according to claim 1, characterized in that, The movable block (9) includes a mounting post (28), and clamping mold one (10) and clamping mold two (11) are sleeved on the mounting post (28). The clamping mold one (10) has a through hole one (33), the clamping mold two (11) has a through hole two (32), the movable block (9) has a fixing hole (31), and also includes a positioning pin (30). The positioning pin (30) can pass through the through hole two (32) and the through hole one (33) and be inserted into the fixing hole (31).

6. The pipe bending device for processing automotive pipe fittings according to claim 5, characterized in that, The mounting post (28) includes a threaded section (37) located at the top of the outer periphery of the mounting post (28), and a locking nut (29) is threaded onto the threaded section (37).

7. The pipe bending device for processing automotive pipe fittings according to claim 1, characterized in that, It also includes a clamping mechanism, which includes a movable clamping block (15) and a fixed clamping block (16). A guide rail (12) is provided on the worktable (1). A sliding block (13) is slidably provided on the guide rail (12). The movable clamping block (15) is mounted on the sliding block (13). A linear driver (14) is provided on the guide rail (12). The linear driver (14) drives the sliding block (13).

8. The bending device for processing automotive pipe fittings according to claim 1, characterized in that, It also includes two linear actuators (18), each of which is connected to a mandrel (19). A support base (17) is provided on the worktable (1), and the linear actuators (18) are fixedly installed on the support base (17).

9. The pipe bending device for processing automotive pipe fittings according to claim 1, characterized in that, The support column (2) is fixedly connected to the outer periphery of the support ring (21). The rotating component (5) includes a rotating ring (22). The rotating ring (22) is sleeved on the support column (2) and located above the support ring (21). The rotating ring (22) can rotate around the support column (2). The outer periphery of the rotating ring (22) is connected to a reinforcing rib (23). The other end of the reinforcing rib (23) is connected to the bottom of the support plate (24).