Pre-bending mechanism

Abstract

This utility model relates to the field of pipe bending mechanism technology, and in particular to a pre-bending pipe mechanism. The pre-bending pipe mechanism includes a moving component, a height adjustment component, a rotary drive component, and an elbow component. The moving component includes a horizontal thrust cylinder and a mounting bracket connected to the piston rod of the horizontal thrust cylinder. The height adjustment component includes a lifting cylinder and a lifting frame. The lifting cylinder is mounted on the bottom surface of the mounting bracket, and the lifting frame is connected to the piston rod of the lifting cylinder. The rotary drive component includes a rotary servo motor and a synchronous belt drive component. The rotary servo motor is mounted on the top of the lifting frame. The elbow component includes a fixed shaft and a rotating disk driven by the synchronous belt drive component. The fixed shaft passes through the rotating disk and connects to a fixed wheel. A guide wheel is connected to the rotating disk to form a pipe bending channel. This utility model achieves two-dimensional positioning through a cylinder, and the servo motor precisely controls the rotation angle to complete the pre-bending process of the pipe.

Description

Technical Field

[0001] This utility model relates to the field of pipe bending mechanism technology, and in particular to a pre-bending pipe mechanism. Background Technology

[0002] Traditional pipe bending machines may rely on a single axis of motion, making it difficult to meet the processing needs of complex pipe shapes (such as three-dimensional pipe bending). Some machines use open frames or simple sliding mechanisms, which are prone to deformation under radial forces, affecting the roundness of the bent pipe. Furthermore, traditional pipe bending dies are fixed, requiring complete disassembly of the die when changing to different pipe diameters, resulting in low efficiency. Additionally, some machines require manual height adjustment, making synchronization with horizontal feeding impossible and impacting the continuity of automation. Utility Model Content

[0003] The technical problem to be solved by this utility model is: in order to solve the problems of the prior art in the background, such as difficulty in processing complex tubes by single-axis motion, deformation due to insufficient structural rigidity, low efficiency of fixed mold replacement, and impact of manual height adjustment on automation, a pre-bending tube mechanism is provided.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a pre-bending pipe mechanism, comprising: The moving assembly includes a push cylinder and a mounting bracket connected to the piston rod of the push cylinder. A height adjustment assembly includes a lifting cylinder and a lifting frame. The lifting cylinder is mounted on the bottom surface of the mounting frame, and the lifting frame is connected to the piston rod of the lifting cylinder. A rotary drive assembly, comprising a rotary servo motor and a synchronous belt drive, wherein the rotary servo motor is mounted on the top of the lifting frame. An elbow assembly includes a fixed shaft and a rotating disk driven by a synchronous belt drive. The fixed shaft passes through the rotating disk and is connected to a pulley. A guide wheel is connected to the rotating disk to form a bend channel.

[0005] The horizontal movement of the mounting frame is driven by the linear motion of a push cylinder, achieving overall position adjustment of the bending mechanism and ensuring precise feeding of the pipe into the bending station. The vertical position of the lifting frame is adjusted by a lifting cylinder to accommodate pipes of different diameters or bending radii, allowing for flexible adjustment of the bending height and avoiding interference caused by differences in pipe dimensions, thus improving the mechanism's versatility. A servo motor drives the elbow assembly to rotate via a synchronous belt drive, providing precise torque and angle control. A fixed-axis roller serves as the bending reference, while a rotating disc drives a guide roller to compress the pipe, forming a bending channel. Through the cooperation of the fixed roller and the guide roller, progressive bending of the pipe is achieved, avoiding localized deformation or indentations and ensuring the smoothness and dimensional consistency of the bend.

[0006] According to one embodiment of the present invention, the flat-push cylinder is mounted on a cylinder seat mounting base plate, and the bottom surface of the cylinder seat mounting base plate is provided with a first slider that moves along the bed slide rail.

[0007] The cylinder seat mounting base plate serves as the support base for the flat-push cylinder, and the first slider ensures that it moves smoothly along the bed slide rail.

[0008] According to one embodiment of the present invention, the mounting frame includes a base plate, a mounting base plate and a mounting side plate. The bottom surface of the base plate is provided with a second slider that moves along the bed slide rail. The mounting base plate is fixed on the base plate, and the lifting cylinder is mounted on the mounting base plate.

[0009] The base plate is connected to the bed slide rail via the second slider, the mounting base plate fixes the lifting cylinder, and the mounting side plate provides the mounting surface for the vertical guide rail.

[0010] According to one embodiment of the present invention, the inner wall of the mounting side plate is connected to a vertical guide rail, and a third slider is provided on the vertical guide rail along which it slides. The third slider is connected to the lifting frame through a slider mounting plate.

[0011] The vertical guide rail constrains the movement path of the lifting frame, and the third slider transmits power through the slider mounting plate.

[0012] According to one embodiment of the present invention, the top of the lifting frame is provided with a lifting base plate, the fixed shaft passes through and is fixed on the lifting base plate, the lower end of the fixed shaft is connected to the fixed shaft cover plate, and the upper end is connected to the fixed wheel.

[0013] The lifting base plate serves as the mounting platform for the rotary drive assembly and the elbow assembly, with the fixed axis providing the rotation center for the fixed wheels.

[0014] According to one embodiment of the present invention, the synchronous belt drive includes a driving synchronous pulley, a synchronous belt, and a driven synchronous pulley. The rotary servo motor is mounted on the bottom surface of the lifting base plate, and its output shaft passes through the lifting base plate and connects to the driving synchronous pulley. The driven synchronous pulley is mounted on a fixed shaft through a bearing and is connected to a rotating disk.

[0015] The servo motor transmits power to the rotating disk via a synchronous belt. The synchronous belt drive is slip-free, ensuring the synchronization of the rotating disk and the servo motor's rotation angle.

[0016] According to one embodiment of the present invention, a spacer ring is provided between the driven synchronous pulley on the fixed shaft and the lifting base plate.

[0017] The lower bearing of the driven synchronous pulley is supported by a spacer ring. When the fixed shaft is tightened, the lower bearing of the driven synchronous pulley rotates normally around the fixed shaft under the drive of the synchronous belt, thereby improving the transmission efficiency.

[0018] According to one embodiment of the present invention, the upper outer side of the mounting side plate is connected to a bent pipe platform, and the bent pipe platform is provided with a clearance hole for the rotating disc portion to extend out.

[0019] The curved platform supports the pipe, and the clearance hole avoids interference from the movement of the rotating disk.

[0020] The beneficial effects of this utility model are: The moving component driven by the horizontal cylinder provides precise horizontal displacement, the height adjustment component controlled by the lifting cylinder achieves precise vertical adjustment, and the rotary servo motor in conjunction with the synchronous belt transmission ensures precise control of the rotation angle. This multi-degree-of-freedom collaborative control enables the mechanism to complete the pre-bending of tubes with complex spatial curves, solving the technical limitation of traditional equipment that can only perform single-plane bending. The overall rigidity of the structure is significantly improved by using a multi-layered support structure, including a cylinder base plate, base plate, mounting base plate, and lifting base plate, in conjunction with the bed slide rail and vertical guide rail system. The sliding system composed of the first slider, second slider, and third slider not only ensures smooth movement but also effectively disperses the radial force generated during pipe bending, avoiding the problem of easy deformation of traditional open frames. The rotary drive assembly uses a servo motor in conjunction with a synchronous belt drive. The driven synchronous belt pulley is mounted on the fixed shaft through a bearing design, which further reduces rotational resistance. The spacer ensures the precise positioning of the transmission components. The combination structure of the fixed axis and the rotating disk can quickly adapt to the processing needs of pipes of different diameters. The setting of the clearance hole not only ensures the movement space of the rotating disk, but also provides convenience for observing the processing process. All moving components are pneumatically or servo-electrically driven, and with the help of a precision guide rail and slider system, fully automated control is achieved. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Figure 1 This is a schematic diagram of the structure of this utility model.

[0023] Figure 2 yes Figure 1 A schematic diagram of the structure from another direction.

[0024] Figure 3 This is a schematic diagram of the height adjustment component in this utility model.

[0025] Figure 4 This is a schematic diagram of the installation of the rotary drive assembly and the elbow assembly in this utility model.

[0026] In the diagram: 1. Horizontal push cylinder; 2. Mounting bracket; 3. Cylinder seat mounting base plate; 4. First slider; 5. Second slider; 6. Vertical guide rail; 7. Third slider; 8. Lifting cylinder; 9. Lifting frame; 10. Slider mounting plate; 11. Lifting base plate; 12. Rotary servo motor; 13. Active synchronous pulley; 14. Driven synchronous pulley; 15. Fixed shaft; 16. Rotating disk; 17. Fixed shaft cover plate; 18. Fixed wheel; 19. Spacer ring; 20. Support wheel; 21. Base plate; 22. Mounting base plate; 23. Mounting side plate; 24. Bend plate; 241. Clearance hole. Detailed Implementation

[0027] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0028] like Figure 1 and Figure 2 As shown, a pre-bending pipe mechanism includes a moving component, a height adjustment component, a rotary drive component, and an elbow component. The moving component provides linear motion in the horizontal direction, driving the entire pipe bending mechanism to move along the bed slide rail to achieve the feeding and positioning function of the pipe. It includes a horizontal push cylinder 1 and a mounting bracket 2 connected to the piston rod of the horizontal push cylinder 1. The horizontal push cylinder 1 is mounted on a cylinder seat mounting base plate 3, and the bottom surface of the cylinder seat mounting base plate 3 is provided with a first slider 4 that moves along the bed slide rail. The mounting bracket 2 serves as the mounting base for the height adjustment component, connecting the moving component with other functional modules. It includes a base plate 21, a mounting base plate 22, and a mounting side plate 23. The bottom surface of the base plate 21 is provided with a second slider 5 that moves along the bed slide rail, and the mounting base plate 22 is fixed on the base plate 21.

[0029] like Figure 3 As shown, the height adjustment component realizes the vertical position adjustment of the pipe bending mechanism to adapt to the processing requirements of different pipe diameters. It includes a lifting cylinder 8, a vertical guide rail 6 and a lifting frame 9. The lifting cylinder 8 is installed on the mounting base plate 22, the vertical guide rail 6 is installed on the inner wall of the mounting side plate 23, and a third slider 7 is provided on the vertical guide rail 6. The third slider 7 is connected to the lifting frame 9 through the slider mounting plate 10. The top of the lifting frame 9 is provided with a lifting base plate 11.

[0030] like Figure 4As shown, the rotary drive assembly includes a rotary servo motor 12 and a synchronous belt drive, providing precise rotary power control for the bending angle and speed. The rotary servo motor 12 is mounted on the bottom surface of the lifting base plate 11. The synchronous belt drive includes a driving synchronous pulley 13, a synchronous belt, and a driven synchronous pulley 14. The driving synchronous pulley 13 is mounted on the output shaft of the rotary servo motor 12. The bend assembly performs the actual bending operation, forming an adjustable bending channel, including a fixed shaft 15 and a rotating disk 16. The fixed shaft 15 passes through and is fixed to the lifting base plate 11, with its lower end connected to a fixed shaft cover plate 17 and its upper end connected to a fixed pulley 18. The driven synchronous pulley 14 is mounted on the fixed shaft 15 via bearings and is connected to the rotating disk 16. A spacer 19 is provided between the driven synchronous pulley 14 on the fixed shaft 15 and the lifting base plate 11. A guide wheel 20 is connected to the rotating disk 16 to form the bending channel.

[0031] In addition, a bending platform 24 is connected to the upper outer side of the mounting side plate 23. The bending platform 24 has a clearance hole 241 for the rotating disk 16 to extend out, providing a pipe support platform and leaving room for the rotating parts to move.

[0032] Working principle: Initial positioning stage: The flat-push cylinder 1 moves along the bed slide rail via the first slider 4 to position the mounting frame 2 to be processed; the lifting cylinder 8 adjusts the height of the lifting frame 9 along the vertical guide rail 6 via the third slider 7 to align the center line of the fixed wheel 18 with the axis of the pipe. Pipe clamping stage: The pipe is fed into the curved pipe channel formed by the fixed roller 18 and the guide roller 20; Bending process stage: The rotary servo motor 12 drives the rotary disk 16 to rotate through the synchronous belt drive. The driven synchronous belt pulley 14 drives the rotary disk 16 to rotate. The fixed wheel 18 remains fixed, and the guide wheel 20 moves with the rotary disk 16, forcing the pipe to bend around the fixed wheel 18.

[0033] Reset phase: After bending is completed, the rotating disk 16 returns to the initial position, the lifting cylinder 8 descends, and the flat pushing cylinder 1 resets, preparing for the next processing cycle.

[0034] The entire work cycle can be completed in 3-8 seconds (depending on the bending angle), which is more efficient than traditional equipment. Through the coordinated work of various components, high-precision and high-efficiency automated pipe bending processing is achieved.

[0035] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A pre-bending pipe mechanism, characterized in that, include: The moving assembly includes a push cylinder (1) and a mounting bracket (2) connected to the piston rod of the push cylinder (1). The height adjustment assembly includes a lifting cylinder (8) and a lifting frame (9), wherein the lifting cylinder (8) is mounted on the bottom surface of the mounting frame (2), and the lifting frame (9) is connected to the piston rod of the lifting cylinder (8). A rotary drive assembly, comprising a rotary servo motor (12) and a synchronous belt drive, wherein the rotary servo motor (12) is mounted on top of the lifting frame (9), The elbow assembly includes a fixed shaft (15) and a rotating disk (16) driven by a synchronous belt drive. The fixed shaft (15) passes through the rotating disk (16) and is connected to a fixed wheel (18). A guide wheel (20) is connected to the rotating disk (16) to form a bend channel.

2. The pre-bending pipe mechanism according to claim 1, characterized in that: The flat-push cylinder (1) is mounted on the cylinder seat mounting base plate (3), and the bottom surface of the cylinder seat mounting base plate (3) is provided with a first slider (4) that moves along the bed slide rail.

3. The pre-bending pipe mechanism according to claim 1, characterized in that: The mounting frame (2) includes a base plate (21), a mounting base plate (22) and a mounting side plate (23). The bottom surface of the base plate (21) is provided with a second slider (5) that moves along the bed slide rail. The mounting base plate (22) is fixed on the base plate (21). The lifting cylinder (8) is mounted on the mounting base plate (22).

4. The pre-bending pipe mechanism according to claim 3, characterized in that: The inner wall of the mounting side plate (23) is connected to a vertical guide rail (6), and a third slider (7) is provided on the vertical guide rail (6) and slides along it. The third slider (7) is connected to the lifting frame (9) through a slider mounting plate (10).

5. The pre-bending pipe mechanism according to claim 1, characterized in that: The top of the lifting frame (9) is provided with a lifting base plate (11), and the fixed shaft (15) passes through and is fixed on the lifting base plate (11). Its lower end is connected to the fixed shaft cover plate (17), and its upper end is connected to the fixed wheel (18).

6. The pre-bending pipe mechanism according to claim 5, characterized in that: The synchronous belt drive includes an active synchronous pulley (13), a synchronous belt, and a driven synchronous pulley (14). The rotary servo motor (12) is mounted on the bottom surface of the lifting base plate (11), and its output shaft passes through the lifting base plate (11) and connects to the active synchronous pulley (13). The driven synchronous pulley (14) is mounted on a fixed shaft (15) through a bearing and is connected to a rotating disk (16).

7. The pre-bending pipe mechanism according to claim 6, characterized in that: A spacer (19) is provided between the driven synchronous pulley (14) on the fixed shaft (15) and the lifting base plate (11).

8. The pre-bending pipe mechanism according to claim 3, characterized in that: The upper outer side of the mounting side plate (23) is connected to a bent pipe platform (24), and the bent pipe platform (24) is provided with a clearance hole (241) for the rotating disk (16) to extend out.

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