A pipe bending forming mechanism

Abstract

This invention provides a pipe bending and forming mechanism, which mainly consists of a base, a pipe clamping assembly, a bending drive assembly, and an auxiliary guide assembly. The pipe clamping assembly employs a composite structure of a horizontal adjustment assembly and a vertical adjustment assembly. Through the coordinated action of the horizontal drive cylinder and the vertical cylinder, the pressure block is precisely adjusted in two-dimensional space, ensuring that the pipe is stably and accurately positioned before bending. The bending drive assembly, with a rotary joint as its core, drives the bending and forming assembly, guide wheel, and pressure block to rotate synchronously. The bending and forming assembly achieves micron-level position adjustment through a screw-nut system, while the pressure cylinder provides stable radial thrust. The combination of these two components ensures that the forming block can apply a precise bending moment as needed. The guide wheel and pressure block of the auxiliary guide assembly maintain contact with the outer wall of the pipe throughout the bending process, forming continuous dynamic support and guidance.

Description

Technical Field

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

[0002] Pipe bending is a fundamental process in manufacturing, widely used in the automotive, aerospace, and energy industries. However, traditional pipe bending processes often face challenges such as inaccurate positioning and difficulty in precisely controlling the bending radius. Furthermore, the lack of effective dynamic support and guidance mechanisms during bending operations makes the pipe prone to axial displacement or local instability under stress, limiting processing accuracy and yield. Utility Model Content

[0003] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a pipe bending and forming mechanism to solve the problems of low processing accuracy and low yield in the prior art.

[0004] To achieve the above and other related objectives, this utility model provides the following technical solution:

[0005] A pipe bending and forming mechanism includes: a base; a pipe clamping assembly including a horizontal adjustment assembly disposed on the base, a vertical adjustment assembly disposed on the horizontal adjustment assembly, and a pressing block disposed on the vertical adjustment assembly; a bending drive assembly including a rotary joint and a bending and forming assembly disposed on the rotary joint; and an auxiliary guide assembly including a guide wheel disposed on the rotary joint and a pressing block disposed on the guide wheel.

[0006] To achieve the above technical solution, the position of the pressure block is first precisely adjusted using horizontal and vertical adjustment components, firmly pressing the pipe into the forming position. After clamping, the bending drive component is activated, and the rotary joint drives the bending forming component, guide wheel, and pressure block mounted on it to rotate synchronously. During rotation, the bending forming component applies a bending moment to the pipe, causing it to undergo plastic deformation around the guide wheel; simultaneously, the guide wheel and its pressure block, which move with the rotary joint, remain in contact with the outer wall of the pipe, providing continuous dynamic support and guidance during the bending stroke, preventing axial displacement or local instability of the pipe during deformation.

[0007] In one embodiment of the present invention, the horizontal adjustment component includes a slide plate slidably disposed on the base and a horizontal drive cylinder for driving the slide plate closer to or away from the rotary joint; the vertical adjustment component is provided on the slide plate.

[0008] To achieve the above technical solution, the slide plate is slidably mounted on the base and controlled by a horizontal drive cylinder. When it is necessary to adjust the pipe clamping position, the horizontal drive cylinder extends according to the set stroke, pushing the slide plate to move horizontally along the guide rail on the base, thereby causing the vertical adjustment component and the pressure block on it to move closer to the rotating joint.

[0009] In one embodiment of the present invention, the vertical adjustment component includes a limiting block disposed on the sliding plate, a vertical cylinder disposed at the lower end of the limiting block, and a slider disposed at the output end of the vertical cylinder and sliding on the limiting block, wherein the slider is provided with the pressing block.

[0010] To achieve the above technical solution, a vertical cylinder is installed at the lower end of the limiting block, and its output end is connected to a slider, which can slide up and down along the limiting block. When it is necessary to adjust the height of the pressing block, the vertical cylinder drives its output end to extend or retract, causing the slider to move vertically on the limiting block, thereby achieving precise lifting and lowering of the pressing block in the vertical direction.

[0011] In one embodiment of the present invention, the bending drive assembly includes two mounting plates symmetrically arranged on the rotary joint, a mounting block disposed between the two mounting plates, and a push cylinder hinged between the two mounting plates and having its output end connected to the mounting block; both mounting plates are provided with sliding grooves along the radial direction of the rotary joint, and both ends of the mounting block extend with guide blocks protruding from the sliding grooves.

[0012] To achieve the above technical solution, two mounting plates are symmetrically fixed on both sides of the rotary joint, with a mounting block between them, and the mounting block is hinged to the output end of a thrust cylinder. During bending, the piston rod of the thrust cylinder extends, pushing the mounting block to move radially between the mounting plates. Since guide blocks are provided at both ends of the mounting block, and these guide blocks pass through radial sliding slots on the mounting plates, the guide blocks slide along the sliding slots under the cylinder's drive, precisely guiding and limiting the movement of the mounting block, ensuring its linear radial movement along the rotary joint. This linear thrust is transmitted to the bending forming assembly through the mounting block, thereby completing the bending process of the pipe.

[0013] In one embodiment of the present invention, the bending forming component includes a fixed block disposed on the mounting block, a screw passing through the fixed block, a nut screwed onto the screw and pressing against the fixed block, a movable block disposed at the lower end of the screw and sliding on the mounting plate, and a forming block embedded in the movable block and capable of abutting against the abutting block.

[0014] To achieve the above technical solution, a fixed block is mounted on the mounting block, serving as the support base for the screw. The screw passes through the fixed block, and its position relative to the fixed block is adjusted by screwing a nut onto it. A movable block is connected to the lower end of the screw, allowing it to slide on the mounting plate. A forming block is embedded in the movable block, and its position can be finely adjusted by adjusting the screw and nut. When the bending drive assembly operates, the rotary joint drives the entire bending forming assembly to rotate, causing the forming block to contact the pipe to be bent and apply pressure, prompting the pipe to undergo plastic deformation to form the desired bending shape. During this process, the abutment block moves with the rotary joint, ensuring continuous support and guidance for the pipe during bending.

[0015] As described above, the pipe bending and forming mechanism of this utility model has the following beneficial effects: This pipe bending and forming mechanism achieves precise control and high-quality forming of the pipe bending process through the coordinated design of a rotary joint and auxiliary guide components. Its core advantage lies in the synchronous linkage of dynamic support and forming. The rotary joint drives the bending and forming components, guide wheels, and abutment blocks to rotate as a whole, ensuring that the forming block and abutment block always maintain precise matching with the pipe deformation zone. This effectively avoids the axial offset and local instability problems caused by asynchronous support and pressure in traditional equipment. The continuous contact between the guide wheel and the abutment block provides continuous dynamic support for the pipe deformation zone, effectively suppressing uneven wall thickness and cross-sectional distortion. It solves the defect of insufficient support in traditional fixed guide structures under complex curvatures, effectively improving the bending accuracy and yield of the pipe. Attached Figure Description

[0016] Figure 1 The diagram shows the state of the pipe before bending.

[0017] Figure 2 The diagram shows the state of the pipe in the present invention during bending.

[0018] Figure 3 The diagram shows the state of the pipe of this utility model after it has been bent.

[0019] Component designation explanation

[0020] 1. Base; 2. Pressing block; 3. Rotary joint; 4. Guide wheel; 5. Abutting block; 6. Slide plate; 7. Horizontal drive cylinder; 8. Limiting block; 9. Vertical cylinder; 10. Slider; 11. Mounting plate; 12. Mounting block; 13. Pushing cylinder; 111. Sliding groove; 121. Guide block; 14. Fixing block; 15. Screw; 16. Nut; 17. Movable block; 18. Forming block. Detailed Implementation

[0021] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. It should be noted that, unless otherwise specified, the following embodiments and features can be combined with each other.

[0022] Please see Figures 1 to 3 This utility model provides a pipe bending and forming mechanism, including a base 1; a pipe clamping assembly, including a horizontal adjustment assembly, a vertical adjustment assembly, and a pressing block 2 on the vertical adjustment assembly, all mounted on the base 1; a bending drive assembly, including a rotary joint 3 and a bending and forming assembly mounted on the rotary joint 3; and an auxiliary guide assembly, including a guide wheel 4 on the rotary joint 3 and a pressing block 5 on the guide wheel 4.

[0023] First, the position of the pressure block 2 is precisely adjusted using the horizontal and vertical adjustment components, firmly pressing the pipe into the forming position. After clamping, the bending drive component is activated, and the rotating joint 3 drives the bending forming component, guide wheel 4, and abutment block 5 mounted on it to rotate synchronously. During rotation, the bending forming component applies a bending moment to the pipe, causing it to undergo plastic deformation around the guide wheel 4; at the same time, the guide wheel 4 and its abutment block 5, which move together with the rotating joint 3, always maintain contact with the outer wall of the pipe, providing continuous dynamic support and guidance during the bending stroke, preventing axial displacement or local instability of the pipe during deformation.

[0024] The horizontal adjustment assembly includes a sliding plate 6 slidably mounted on the base 1 and a horizontal drive cylinder 7 that drives the sliding plate 6 closer to or further away from the rotary joint 3; the vertical adjustment assembly is mounted on the sliding plate 6. The sliding plate 6 is slidably mounted on the base 1 and is controlled by the horizontal drive cylinder 7. When it is necessary to adjust the pipe clamping position, the horizontal drive cylinder 7 extends according to a set stroke, pushing the sliding plate 6 to move horizontally along the guide rail on the base 1, thereby causing the vertical adjustment assembly and the pressure block 2 on it to move closer to the rotary joint 3 as a whole.

[0025] The vertical adjustment assembly includes a limiting block 8 mounted on the sliding plate 6, a vertical cylinder 9 mounted at the lower end of the limiting block 8, and a slider 10 mounted at the output end of the vertical cylinder 9 and sliding on the limiting block 8. The slider 10 is equipped with the pressing block 2. The vertical cylinder 9 is mounted at the lower end of the limiting block 8, and its output end is connected to the slider 10, which can slide up and down along the limiting block 8. When it is necessary to adjust the height of the pressing block 2, the vertical cylinder 9 drives its output end to extend or retract, causing the slider 10 to move vertically on the limiting block 8, thereby achieving precise vertical lifting and lowering of the pressing block 2.

[0026] The bending drive assembly includes two mounting plates 11 symmetrically arranged on the rotary joint 3, a mounting block 12 disposed between the two mounting plates 11, and a push cylinder 13 hinged between the two mounting plates 11 and whose output end is connected to the mounting block 12; both mounting plates 11 are provided with sliding slots 111 along the radial direction of the rotary joint 3, and both ends of the mounting block 12 are provided with guide blocks 121 extending out of the sliding slots 111.

[0027] Two mounting plates 11 are symmetrically fixed on both sides of the rotary joint 3, with a mounting block 12 between them. The mounting block 12 is hinged to the output end of a thrust cylinder 13. During bending, the piston rod of the thrust cylinder 13 extends, pushing the mounting block 12 to move radially between the mounting plates 11. Since guide blocks 121 are provided at both ends of the mounting block 12, and the guide blocks 121 pass through radial sliding slots 111 on the mounting plates 11, the guide blocks 121 slide along the sliding slots 111 under the drive of the cylinder, providing precise guidance and limiting for the movement of the mounting block 12, ensuring its radial linear movement along the rotary joint 3. This linear thrust is transmitted to the bending forming assembly through the mounting blocks 12, thereby completing the bending process of the pipe.

[0028] The bending forming assembly includes a fixing block 14 disposed on the mounting block 12, a screw 15 passing through the fixing block 14, a nut 16 screwed onto the screw 15 and pressing against the fixing block 14, a movable block 17 disposed at the lower end of the screw 15 and sliding on the mounting plate 11, and a forming block 18 embedded in the movable block 17 and capable of abutting against the abutting block 5.

[0029] A fixed block 14 is mounted on the mounting block 12, serving as a support base for the screw 15. The screw 15 passes through the fixed block 14, and its position relative to the fixed block 14 is adjusted by screwing a nut 16 onto it. A movable block 17 is connected to the lower end of the screw 15, which can slide on the mounting plate 11. A forming block 18 is embedded in the movable block 17, and its position can be finely adjusted by adjusting the screw 15 and the nut 16. When the bending drive assembly operates, the rotary joint 3 drives the entire bending forming assembly to rotate, causing the forming block 18 to contact the tube to be bent and apply pressure, causing the tube to undergo plastic deformation to form the desired bending shape. During this process, the abutment block 5 moves with the rotary joint 3, ensuring continuous support and guidance for the tube during bending.

[0030] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit this utility model. All equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A pipe bending and forming mechanism, characterized in that, include: Base (1); The pipe clamping assembly includes a horizontal adjustment assembly disposed on the machine base (1), a vertical adjustment assembly disposed on the horizontal adjustment assembly, and a pressing block (2) disposed on the vertical adjustment assembly; A bending drive assembly includes a rotary joint (3) and a bending forming assembly disposed on the rotary joint (3); The auxiliary guide assembly includes a guide wheel (4) disposed on the rotary joint (3) and an abutment block (5) disposed on the guide wheel (4).

2. The tube bending and forming mechanism according to claim 1, characterized in that: The horizontal adjustment assembly includes a sliding plate (6) slidably disposed on the base (1) and a horizontal drive cylinder (7) that drives the sliding plate (6) to move closer to or away from the rotary joint (3); The vertical adjustment component is provided on the skateboard (6).

3. The tube bending and forming mechanism according to claim 2, characterized in that: The vertical adjustment assembly includes a limiting block (8) disposed on the sliding plate (6), a vertical cylinder (9) disposed at the lower end of the limiting block (8), and a slider (10) disposed at the output end of the vertical cylinder (9) and sliding on the limiting block (8), wherein the slider (10) is provided with the pressing block (2).

4. The tube bending and forming mechanism according to claim 1, characterized in that: The bending drive assembly includes two mounting plates (11) symmetrically arranged on the rotary joint (3), a mounting block (12) arranged between the two mounting plates (11), and a push cylinder (13) hinged between the two mounting plates (11) and whose output end is connected to the mounting block (12); Both mounting plates (11) are provided with sliding grooves (111) along the radial direction of the rotating joint (3), and both ends of the mounting block (12) are provided with guide blocks (121) extending out of the sliding grooves (111).

5. A pipe bending and forming mechanism according to claim 4, characterized in that: The bending forming assembly includes a fixed block (14) disposed on the mounting block (12), a screw (15) passing through the fixed block (14), a nut (16) screwed onto the screw (15) and pressing against the fixed block (14), a movable block (17) disposed at the lower end of the screw (15) and sliding on the mounting plate (11), and a forming block (18) embedded in the movable block (17) and capable of abutting against the abutting block (5).

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