A pipe bending machine for producing and processing D-shaped pipes in an automobile interior

By setting up positioning and clamping components on the tube bending machine, combined with scale markings and indicator rods, the problems of positioning and angle control in D-shaped tube processing are solved, achieving high-precision and stable tube bending, and improving the processing quality and safety of D-shaped tubes for automotive interiors.

CN224487264UActive Publication Date: 2026-07-14SHANGHAI AOZHAN AUTO PARTS CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHANGHAI AOZHAN AUTO PARTS CO LTD
Filing Date
2025-08-18
Publication Date
2026-07-14

AI Technical Summary

Technical Problem

Existing D-type pipe bending machines have shortcomings in positioning accuracy and angle control, resulting in low processing accuracy, which affects the assembly accuracy and overall performance of automotive internal parts, and may even pose safety hazards.

Method used

By employing positioning and clamping components, the starting position of the tube bending is precisely adjusted by rotating the rotating block to drive the threaded screw, and the bending angle is precisely controlled by scale markings and indicator rods to ensure processing accuracy and stability.

Benefits of technology

This improves the processing precision and stability of D-shaped tubes, ensuring the accuracy and applicability of the tube body during bending, meeting different processing requirements, and enhancing the operating efficiency of automotive internal piping systems.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

The utility model discloses a kind of pipe bender for the production and processing of D type pipe inside automobile, it is related to pipe bender technical field, including table body, the top outer wall of table body is fixedly connected with top plate, the top outer wall of top plate is equipped with through slot, the top outer wall of top plate is fixedly connected with first bending wheel, the bottom inner wall of table body is rotatably connected with rotating column, the end of rotating column away from the bottom inner wall of table body is rotatably connected with the first bending wheel, the circumferential outer wall of rotating column is fixedly connected with rotating seat, one end of rotating seat is fixedly connected with connecting plate.The utility model is through the scale mark line of top plate top and the cooperation of the indicating rod of the circumferential outer wall of second bending wheel, operator can observe indicating rod position when bending, accurately control the bending angle of pipe body, satisfy different processing needs, enhance the applicability and processing flexibility of equipment.
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Description

Technical Field

[0001] This utility model relates to the field of pipe bending machine technology, and in particular to a pipe bending machine for producing and processing D-shaped tubes for automobile interiors. Background Technology

[0002] In the automotive manufacturing industry, D-shaped tubes are widely used inside vehicles, and their quality and precision directly affect the performance and safety of the car. However, existing D-shaped tube bending technology has many drawbacks.

[0003] Traditional pipe bending machines generally face the problem of poor positioning accuracy when processing D-shaped tubes. Due to the lack of precise positioning devices, determining the starting position of the bend often relies on manual estimation and adjustment based on experience. This results in significant deviations in the bending positions of different batches of D-shaped tubes. This deviation not only affects the assembly accuracy of the D-shaped tubes with other internal automotive components but may also cause problems with the sealing and connection stability of the entire automotive system, reducing overall vehicle performance and even posing safety hazards in extreme cases. Furthermore, traditional pipe bending machines lack effective means for controlling the bending angle. Operators often struggle to accurately grasp the bending angle of the tubes, relying mostly on rough observation and experience. This makes it difficult for the processed D-shaped tubes to meet design requirements, potentially leading to imperfect matching between the D-shaped tubes and other components in practical applications. This can affect the normal operation of the automotive internal piping system, such as impacting the delivery efficiency of coolant and fuel. Therefore, there is an urgent need for a pipe bending machine specifically designed for producing D-shaped tubes for automotive applications to solve these problems. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a pipe bending machine for manufacturing D-shaped tubes for automotive interiors. Its advantages are: by setting a positioning component, rotating the rotating block drives the second threaded screw to rotate, which in turn moves the first threaded sleeve, bending rod, and baffle, precisely adjusting the starting position of the tube bending, ensuring the accuracy of the D-shaped tube bending position, and improving product processing precision.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A pipe bending machine for producing D-shaped tubes for automotive interiors includes a platform. A top plate is fixedly connected to the top outer wall of the platform. A through groove is formed on the top outer wall of the top plate. A first bending wheel is fixedly connected to the top outer wall of the top plate. A rotating column is rotatably connected to the bottom inner wall of the platform. One end of the rotating column away from the bottom inner wall of the platform is rotatably connected to the first bending wheel.

[0007] A rotating seat is fixedly connected to the outer circumference of the rotating column. A connecting plate is fixedly connected to one end of the rotating seat. One end of the connecting plate extends to the outside of the platform. A handle is fixedly connected to the top outer wall of the connecting plate. A second bending wheel for bending the tube is fixedly connected to the top outer wall of the rotating seat.

[0008] The top of the platform is provided with a clamping component and a positioning component.

[0009] Through the above technical solutions, the clamping and positioning components are set on the top of the platform, and the various components cooperate with each other to form a complete mechanical structure that can realize the bending of D-shaped tubes.

[0010] Preferably, the clamping assembly includes a first threaded screw disposed inside the platform body, a second threaded sleeve threadedly connected to the outer circumferential wall of the first threaded screw, a slide rod fixedly connected to the top outer wall of the second threaded sleeve, a first limiting groove formed on the top outer wall of the top plate, the slide rod slidably connected to the first limiting groove, a bent column fixedly connected to the top outer wall of the slide rod, a clamping seat fixedly connected to one end of the bent column, and the clamping seat pressing the tube body against the outer circumferential wall of the rotating seat.

[0011] The above technical solutions firmly press the tube against the outer circumference of the rotating seat, effectively preventing displacement of the tube during bending, ensuring the stability of the processing, and improving product quality.

[0012] Preferably, a throttle is fixedly connected to one end of the first threaded screw.

[0013] The above technical solution involves fixing the throttle to one end of the first threaded screw, providing a convenient point of leverage for operators to operate the clamping assembly.

[0014] Preferably, the top outer wall of the top plate is provided with scale markings, and the outer circumferential wall of the second bending wheel is fixedly connected with an indicator rod.

[0015] The above technical solutions meet different processing needs and enhance the applicability and processing flexibility of the equipment.

[0016] Preferably, the positioning component includes a second threaded screw rotatably connected to the inner wall of one side of the platform, a first threaded sleeve threadedly connected to the outer circumference of the second threaded screw, a bent rod fixedly connected to the top outer wall of the first threaded sleeve, and a baffle fixedly connected to the end of the bent rod away from the first threaded sleeve.

[0017] The above technical solution allows for precise adjustment of the baffle position, accurately determining the starting position of the tube's bend, ensuring the accuracy of the D-shaped tube's bend position, and improving product processing precision.

[0018] Preferably, the top outer wall of the top plate is provided with a second limiting groove, and the bent rod is slidably connected to the second limiting groove.

[0019] The above technical solutions ensure the stability and accuracy of the baffle when adjusting its position, making the positioning of the tube bending start position more precise and reliable.

[0020] Preferably, a rotating block is fixedly connected to one end of the second threaded screw.

[0021] Through the above technical solution, the rotating block is fixed at one end of the second threaded screw, providing a convenient operating component for the operator to operate the positioning assembly.

[0022] Preferably, a support base is fixedly connected to the top outer wall of the top plate, and the tube body is adapted to the support base.

[0023] The above technical solutions provide a good foundation for subsequent positioning, clamping, and bending operations, which helps to improve machining accuracy and the stability of the machining process.

[0024] The beneficial effects of this utility model are as follows:

[0025] 1. A pipe bending machine for producing D-shaped tubes for automobile interiors, which, by setting a positioning component, rotates a rotating block to drive a second threaded screw to rotate, thereby moving a first threaded sleeve, a bending rod, and a baffle, accurately adjusting the starting position of the pipe body for bending, ensuring the accuracy of the bending position of the D-shaped tube, and improving the product processing precision.

[0026] 2. A pipe bending machine for producing D-shaped tubes for automobile interiors, which is equipped with a clamping assembly. When the operator rotates the handle, it drives the first threaded screw, causing the second threaded sleeve, slide bar, bending column and clamping seat to rise, firmly pressing the tube body against the outer wall of the rotating seat, preventing the tube body from shifting during the bending process, ensuring the stability of the processing process and improving product quality.

[0027] 3. A pipe bending machine for producing D-shaped tubes for automobile interiors, which, through the cooperation of the scale markings on the top plate and the indicator rod on the outer circumference of the second bending wheel, allows the operator to observe the position of the indicator rod during bending, accurately control the bending angle of the tube, meet different processing needs, and enhance the applicability and processing flexibility of the equipment. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall left side structure of a pipe bending machine for producing and processing D-shaped tubes inside automobiles, as proposed in this utility model.

[0029] Figure 2 This is a schematic diagram of the overall right side structure of a pipe bending machine for producing and processing D-shaped tubes inside automobiles, as proposed in this utility model.

[0030] Figure 3 This is a structural breakdown diagram of the internal structure of a pipe bending machine for producing and processing D-shaped tubes for automobiles, as proposed in this utility model.

[0031] Figure 4 This utility model proposes a pipe bending machine for producing and processing D-shaped tubes for automotive interiors. Figure 3 A magnified structural diagram of point A in the middle.

[0032] In the diagram: 1. Platform; 2. Top plate; 3. Scale markings; 4. Through groove; 5. First bending wheel; 6. Pipe body; 7. Handle; 8. Connecting plate; 9. Turning handle; 10. First limiting groove; 11. Second limiting groove; 12. Baffle; 13. Bending rod; 14. Second bending wheel; 15. Indicator rod; 16. Support seat; 17. Rotating block; 18. First threaded sleeve; 19. First threaded screw; 20. Second threaded screw; 21. Second threaded sleeve; 22. Sliding rod; 23. Bending column; 24. Clamping seat; 25. Rotating seat; 26. Rotating column. Detailed Implementation

[0033] The technical solution of this patent will be further described in detail below with reference to specific embodiments.

[0034] The embodiments of this patent are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this patent, and should not be construed as limiting this patent.

[0035] In the description of this patent, it should be understood that the terms “center,” “upper,” “lower,” “front,” “back,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this patent and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this patent.

[0036] In the description of this patent, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this patent according to the specific circumstances.

[0037] Reference Figures 1-4A pipe bending machine for producing D-shaped tubes for automobile interiors includes a platform 1, a top plate 2 fixedly connected to the top outer wall of the platform 1, a through groove 4 opened on the top outer wall of the top plate 2, a first bending wheel 5 fixedly connected to the top outer wall of the top plate 2, and a rotating column 26 rotatably connected to the bottom inner wall of the platform 1, with one end of the rotating column 26 away from the bottom inner wall of the platform 1 rotatably connected to the first bending wheel 5.

[0038] A rotating seat 25 is fixedly connected to the outer circumference of the rotating column 26. A connecting plate 8 is fixedly connected to one end of the rotating seat 25. One end of the connecting plate 8 extends to the outside of the platform 1. A handle 7 is fixedly connected to the top outer wall of the connecting plate 8. A second bending wheel 14 for bending the tube 6 is fixedly connected to the top outer wall of the rotating seat 25.

[0039] The top of the platform 1 is equipped with a clamping assembly and a positioning assembly. The clamping assembly and the positioning assembly are located on the top of the platform 1. The components cooperate with each other to form a complete mechanical structure that can realize the bending of D-shaped tubes. The operator drives the rotating seat 25 and the second bending wheel 14 to rotate around the rotating column 26 by turning the handle 7, thereby bending the tube 6 placed in the appropriate position.

[0040] Furthermore, the clamping assembly includes a first threaded screw 19 disposed inside the platform 1. A second threaded sleeve 21 is threadedly connected to the outer circumferential wall of the first threaded screw 19. A slide rod 22 is fixedly connected to the top outer wall of the second threaded sleeve 21. A first limiting groove 10 is formed on the top outer wall of the top plate 2. The slide rod 22 is slidably connected to the first limiting groove 10. A bent column 23 is fixedly connected to the top outer wall of the slide rod 22. A clamping seat 24 is fixedly connected to one end of the bent column 23. The clamping seat 24 presses the tube 6 against the rotating seat. When the operator turns the handle 9 on the outer circumference of the rotating seat 25, the first threaded screw 19 rotates accordingly. Since the slide rod 22 slides in the first limiting groove 10, it restricts the rotation of the second threaded sleeve 21, allowing it to move only along the axial direction of the first threaded screw 19. This causes the slide rod 22, the bent column 23, and the clamping seat 24 to rise, ultimately firmly pressing the tube body 6 against the outer circumference of the rotating seat 25. This effectively prevents the tube body 6 from shifting during the bending process, ensuring the stability of the processing and improving product quality.

[0041] Furthermore, a handle 9 is fixedly connected to one end of the first threaded screw 19. The handle 9 is fixed to one end of the first threaded screw 19, providing a convenient point of leverage for the operator to operate the clamping assembly. The operator only needs to turn the handle 9 to easily drive the first threaded screw 19 to rotate, thereby realizing the clamping or loosening operation of the clamping seat 24 on the pipe body 6. Compared with directly operating the first threaded screw 19, the setting of the handle 9 greatly reduces the difficulty of operation and improves work efficiency.

[0042] Furthermore, the top outer wall of the top plate 2 is provided with scale markings 3, and the outer circumference of the second bending wheel 14 is fixedly connected with an indicator rod 15. When bending the tube 6, the operator can intuitively and accurately control the bending angle of the tube 6 by observing the position of the indicator rod 15 on the scale markings 3. When the handle 7 is turned to make the second bending wheel 14 rotate to bend the tube 6, the indicator rod 15 rotates synchronously with the second bending wheel 14, and the scale markings on the scale markings 3 are the current bending angle of the tube 6, thereby meeting different processing requirements and enhancing the applicability and processing flexibility of the equipment.

[0043] Furthermore, the positioning component includes a second threaded screw 20 rotatably connected to the inner wall of one side of the platform 1. A first threaded sleeve 18 is threadedly connected to the outer circumference of the second threaded screw 20. A bent rod 13 is fixedly connected to the top outer wall of the first threaded sleeve 18. A baffle 12 is fixedly connected to the end of the bent rod 13 away from the first threaded sleeve 18. When the rotating block 17 is rotated, the second threaded screw 20 rotates accordingly. Since the bent rod 13 slides in the second limiting groove 11, it restricts the rotation of the first threaded sleeve 18, so that it can only move along the axial direction of the second threaded screw 20, thereby driving the bent rod 13 and the baffle 12 to move. By precisely adjusting the position of the baffle 12, the starting position of the bending of the tube 6 can be accurately determined, ensuring the accuracy of the bending position of the D-shaped tube and improving the product processing accuracy.

[0044] Furthermore, a second limiting groove 11 is provided on the top outer wall of the top plate 2. The bent rod 13 is slidably connected to the second limiting groove 11. Since the bent rod 13 is slidably connected to the second limiting groove 11, this sliding connection provides guidance and limiting function for the movement of the bent rod 13. When the first threaded sleeve 18 moves under the drive of the second threaded screw 20, the bent rod 13 can only slide along the direction of the second limiting groove 11, ensuring the stability and accuracy of the baffle 12 when adjusting its position, and making the positioning of the starting position of the pipe body 6 more accurate and reliable.

[0045] Furthermore, a rotating block 17 is fixedly connected to one end of the second threaded screw 20. The rotating block 17 is fixed to one end of the second threaded screw 20, providing a convenient operating component for the operator to operate the positioning assembly. The operator can rotate the rotating block 17 to drive the second threaded screw 20 to rotate, thereby adjusting the position of the baffle 12. Compared with directly rotating the second threaded screw 20, the setting of the rotating block 17 increases the convenience and comfort of operation and improves the efficiency of positioning operation.

[0046] Furthermore, a support base 16 is fixedly connected to the top outer wall of the top plate 2. The tube body 6 is adapted to the support base 16. During the processing, the tube body 6 is placed on the support base 16. The support base 16 can provide stable support for the tube body 6, so that it can maintain a stable placement state before clamping and bending operations, preventing the tube body 6 from shifting or rolling due to its own weight or other external forces. This provides a good foundation for subsequent positioning, clamping and bending operations, and helps to improve processing accuracy and processing stability.

[0047] Working principle: First, the tube body 6 to be processed is placed on the support seat 16. The support seat 16 supports the tube body 6 and keeps it stable during processing. Then, according to the size of the tube body 6 and the required bending position, the positioning component is adjusted by rotating the rotating block 17. The rotating block 17 drives the second threaded screw 20 to rotate. Since the first threaded sleeve 18 is threadedly connected to the second threaded screw 20 and the bent rod 13 is slidably connected to the second limiting groove 11, the rotation of the first threaded sleeve 18 is restricted, so that it can only move along the axial direction of the second threaded screw 20. This drives the bent rod 13 and the baffle 12 to move. The position of the baffle 12 is adjusted to determine the bending start position of the tube body 6.

[0048] After the tube body 6 is positioned, the handle 9 is rotated, which drives the first threaded screw 19 to rotate. The first threaded screw 19 is threadedly connected to the second threaded sleeve 21. The slide rod 22 slides in the first limiting groove 10, restricting the rotation of the second threaded sleeve 21 so that it can only move along the axial direction of the first threaded screw 19. As the second threaded sleeve 21 moves upward, the slide rod 22, the bent column 23, and the clamping seat 24 also rise accordingly. Finally, the clamping seat 24 tightly presses the tube body 6 against the outer circumferential wall of the rotating seat 25, ensuring that the tube body 6 will not be displaced during the bending process.

[0049] After clamping the tube body 6, hold the handle 7 and rotate the connecting plate 8 through the handle 7. The connecting plate 8 drives the rotating seat 25 to rotate around the rotating column 26. When the rotating seat 25 rotates, the second bending wheel 14 fixed on it rotates accordingly, bending the tube body 6. During the bending process, the scale mark 3 on the top outer wall of the top plate 2 and the indicator rod 15 on the outer circumference of the second bending wheel 14 work together. The operator can observe the position of the indicator rod 15 on the scale mark 3 to accurately control the bending angle of the tube body 6, thereby meeting different processing requirements.

[0050] Once the tube 6 is bent to the desired angle, release the throttle 9 to lower the clamping seat 24, releasing the clamp on the tube 6. Then, remove the processed D-shaped tube, completing one processing operation. The above steps can be repeated as needed to process the next tube 6.

[0051] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A pipe bending machine for producing and processing D-shaped tubes for automotive interiors, comprising a platform (1), characterized in that, A top plate (2) is fixedly connected to the top outer wall of the platform (1). A through groove (4) is opened on the top outer wall of the top plate (2). A first bending wheel (5) is fixedly connected to the top outer wall of the top plate (2). A rotating column (26) is rotatably connected to the bottom inner wall of the platform (1). One end of the rotating column (26) away from the bottom inner wall of the platform (1) is rotatably connected to the first bending wheel (5). A rotating seat (25) is fixedly connected to the outer circumference of the rotating column (26). A connecting plate (8) is fixedly connected to one end of the rotating seat (25). One end of the connecting plate (8) extends to the outside of the platform (1). A handle (7) is fixedly connected to the top outer wall of the connecting plate (8). A second bending wheel (14) for bending the tube (6) is fixedly connected to the top outer wall of the rotating seat (25). The top of the platform (1) is provided with a clamping assembly and a positioning assembly.

2. The pipe bending machine for producing and processing D-shaped tubes for automotive interiors according to claim 1, characterized in that, The clamping assembly includes a first threaded screw (19) disposed inside the platform (1), a second threaded sleeve (21) is threadedly connected to the outer circumference of the first threaded screw (19), a slide rod (22) is fixedly connected to the top outer wall of the second threaded sleeve (21), a first limiting groove (10) is provided on the top outer wall of the top plate (2), the slide rod (22) is slidably connected to the first limiting groove (10), a bent column (23) is fixedly connected to the top outer wall of the slide rod (22), a clamping seat (24) is fixedly connected to one end of the bent column (23), and the clamping seat (24) presses the tube (6) against the outer circumference of the rotating seat (25).

3. A pipe bending machine for producing and processing D-shaped tubes for automotive interiors according to claim 2, characterized in that, A throttle (9) is fixedly connected to one end of the first threaded screw (19).

4. A pipe bending machine for producing and processing D-shaped tubes for automotive interiors according to claim 3, characterized in that, The top outer wall of the top plate (2) is provided with scale markings (3), and the outer circumferential wall of the second bending wheel (14) is fixedly connected with an indicator rod (15).

5. A pipe bending machine for producing and processing D-shaped tubes for automotive interiors according to claim 4, characterized in that, The positioning assembly includes a second threaded screw (20) rotatably connected to the inner wall of one side of the platform (1). The outer circumferential wall of the second threaded screw (20) is threaded with a first threaded sleeve (18). The top outer wall of the first threaded sleeve (18) is fixedly connected with a bent rod (13). A baffle (12) is fixedly connected to the end of the bent rod (13) away from the first threaded sleeve (18).

6. A pipe bending machine for producing and processing D-shaped tubes for automotive interiors according to claim 5, characterized in that, The top outer wall of the top plate (2) is provided with a second limiting groove (11), and the bent rod (13) is slidably connected to the second limiting groove (11).

7. A pipe bending machine for producing and processing D-shaped tubes for automotive interiors according to claim 6, characterized in that, A rotating block (17) is fixedly connected to one end of the second threaded screw (20).

8. A pipe bending machine for producing and processing D-shaped tubes for automotive interiors according to claim 7, characterized in that, The top outer wall of the top plate (2) is fixedly connected to a support base (16), and the tube body (6) is adapted to the support base (16).