Metal pipe bending device capable of being adjusted and fixed

By adjusting the distance between the guide roller and the bending roller and using clamping bolts to fix the metal tube, the problem of unstable position of the metal tube during the bending process in the prior art was solved, realizing stable bending of the metal tube at different diameters, and improving the bending effect and product quality.

CN224168430UActive Publication Date: 2026-04-28QINGDAO TONGXIN SECURITY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
QINGDAO TONGXIN SECURITY CO LTD
Filing Date
2025-04-16
Publication Date
2026-04-28

AI Technical Summary

Technical Problem

When bending metal tubes of different diameters, existing platform-type bending machines have a problem with the loose fit between the limiting wheel and the bending head, which causes the metal tube to be in an unstable position during the bending process, making it prone to scratches and uneven deformation.

Method used

An adjustable and fixed metal tube bending device was designed. The distance between the guide roller and the bending roller is adjusted by the adjustment mechanism, and an automatic moving frame is set up by the drive mechanism. The metal tube is fixed by the clamping bolt to ensure its stable position during the bending process.

Benefits of technology

This expands the applicability of the device, ensures the stability of the metal tube during bending, avoids scratches and uneven deformation, and improves bending effect and product quality.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses an adjustable and fixed metal pipe bending device which comprises a control box, a controller, a mounting frame and a moving frame are arranged on the control box, a driving assembly is arranged in the control box, an output shaft of the driving assembly is fixedly connected with a bending roller, a limiting frame is mounted on the side wall of the bending roller through a connecting piece, and the limiting frame is fixedly connected with the moving frame. A plurality of guide rollers are rotationally connected into the moving frame, and an adjusting mechanism used for adjusting the position of the moving frame is arranged on the side wall of the mounting frame. According to the metal pipe bending device, the adjusting mechanism is arranged, the distance between the guide roller and the bending roller can be adjusted by rotating the screw rod, and the device can adapt to metal pipes with different diameters, so that thicker or thinner metal pipes can be bent, and the application range of the device is expanded.
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Description

Technical Field

[0001] This utility model relates to the field of metal tube bending technology, and in particular to an adjustable and fixed metal tube bending device. Background Technology

[0002] Metal tube bending is a metal processing technique that applies external force to a metal tube, causing it to undergo plastic deformation in a specific area, thereby changing the shape of the metal tube to meet the manufacturing needs of various industrial products. For example, in automobile manufacturing, it is used to manufacture exhaust pipes and chassis components; in furniture production, it is used to make metal frames for tables and chairs.

[0003] Platform bending machines use a combination of fixed and rotating wheels to bend metal tubes. This structure is typically only suitable for metal tubes of a single diameter. Its working principle involves using a specific combination of wheels, driven by the rotating wheels, to bend the metal tube around the fixed wheels. However, when the metal tube diameter is large, the width between the limiting wheel and the bending head becomes a limitation. For small-diameter metal tubes, the fit between the tube and the wheels is not tight enough, easily leading to structural loosening. This loosening causes instability in the tube's position during bending, resulting in inaccurate bending angles and potential scratches and uneven deformation on the tube surface, severely affecting the bending effect and product quality. To address these issues, we have proposed this adjustable and fixed metal tube bending device. Utility Model Content

[0004] The main objective of this invention is to provide an adjustable and fixed metal tube bending device, which can effectively solve the problems in the background art.

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

[0006] An adjustable and fixed metal tube bending device includes a control box, a controller, a mounting frame, and a moving frame. A drive assembly is located within the control box. A bending roller is fixedly connected to the output shaft of the drive assembly. A limit frame is mounted on the side wall of the bending roller via a connector. Multiple guide rollers are rotatably connected within the moving frame. An adjustment mechanism for adjusting the position of the moving frame is located on the side wall of the mounting frame. The adjustment mechanism includes a mounting plate disposed within the mounting frame. A screw is rotatably connected to the side wall of the mounting plate and threadedly connected to the moving frame. A drive mechanism for moving the mounting plate is located within the mounting frame.

[0007] Preferably, the driving mechanism includes a hydraulic cylinder fixedly connected to the inner wall of the mounting frame, the output end of the hydraulic cylinder being fixedly connected to the side wall of the mounting plate, and the mounting plate being slidably connected to the mounting frame.

[0008] Preferably, the limiting frame has multiple side walls with through bolts, and the control box has a through groove at the top.

[0009] Preferably, the control box is provided with multiple mounting columns at its lower end, and the lower end of each mounting column is provided with a traveling wheel.

[0010] Preferably, the traveling wheel is a locking swivel wheel, and the through groove has a C-shaped cross-section.

[0011] Preferably, a connecting plate is fixedly connected to the lower end of the mounting frame, and the side wall of the connecting plate is provided with multiple screws.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. This device is equipped with an adjustment mechanism, which can adjust the distance between the guide roller and the bending roller by rotating the screw. The equipment can adapt to metal pipes of different diameters, thus enabling it to bend thicker or thinner metal pipes, thereby expanding the applicability of the device.

[0014] 2. This device is equipped with a drive mechanism. For different metal tubes, the diameter of the metal tube can be input into the controller, and the controller controls the stroke of the hydraulic cylinder output end, so that the moving frame can move automatically, thereby expanding the applicability of the device.

[0015] 3. This device is equipped with clamping bolts. For smaller metal tubes, multiple clamping bolts can be used to approach and clamp the metal tube, thereby fixing the metal tube and preventing it from loosening or shifting during bending due to its small diameter, thus ensuring the stability of the metal tube during bending. Attached Figure Description

[0016] Fig. 1 This is a schematic diagram of the structure of an adjustable and fixed metal tube bending device proposed in this utility model;

[0017] Fig. 2 This is a side view of an adjustable and fixed metal tube bending device proposed in this utility model;

[0018] Fig. 3 This is another side view of an adjustable and fixed metal tube bending device proposed in this utility model.

[0019] In the diagram: 1 Control box, 2 Controller, 3 Bending roller, 4 Guide roller, 5 Mounting plate, 6 Mounting frame, 7 Screw, 8 Moving frame, 9 Limiting frame, 10 Drive assembly, 11 Connector, 12 Tightening bolt, 13 Mounting column, 14 Traveling wheel, 15 Hydraulic cylinder, 16 Connecting plate. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0021] like Figs. 1-3 As shown, an adjustable and fixed metal tube bending device includes a control box 1, a controller 2, a mounting frame 6, and a movable frame 8. A drive assembly 10 is provided inside the control box 1. A bending roller 3 is fixedly connected to the output shaft of the drive assembly 10. A limit frame 9 is installed on the side wall of the bending roller 3 through a connector 11. Multiple guide rollers 4 are rotatably connected inside the movable frame 8. An adjustment mechanism for adjusting the position of the movable frame 8 is provided on the side wall of the mounting frame 6. The adjustment mechanism includes a mounting plate 5 disposed inside the mounting frame 6. A screw 7 is rotatably connected to the side wall of the mounting plate 5. The screw 7 is threadedly connected to the movable frame 8.

[0022] The mounting frame 6 is equipped with a drive mechanism for moving the mounting plate 5. The drive mechanism includes a hydraulic cylinder 15 fixedly connected to the inner wall of the mounting frame 6. The output end of the hydraulic cylinder 15 is fixedly connected to the side wall of the mounting plate 5, and the mounting plate 5 is slidably connected to the mounting frame 6.

[0023] In this utility model, multiple side walls of the limiting frame 9 are provided with tightening bolts 12, which allows thinner metal tubes to be placed inside the limiting frame 9. The upper end of the control box 1 is provided with a through groove, so that the lower tightening bolts 12 can rotate smoothly.

[0024] In this utility model, the lower end of the control box 1 is provided with multiple mounting columns 13, and the lower end of the mounting columns 13 is provided with traveling wheels 14, which enables the equipment to move and facilitates the movement of the equipment.

[0025] In this utility model, the traveling wheel 14 is a locking universal wheel, which allows the control box 1 to remain stationary after being moved by locking the locking universal wheel, without the need to place a pad at the bottom of the control box 1. The through groove has a C-shaped cross section.

[0026] In this utility model, a connecting plate 16 is fixedly connected to the lower end of the mounting frame 6. The side wall of the connecting plate 16 is provided with multiple screws, which allows the mounting frame 6 to be disassembled, facilitating the transportation of the equipment out of the factory.

[0027] It should be noted that this utility model is an adjustable and fixed metal tube bending device. When processing metal tubes of different diameters, the screw 7 can be rotated. Since the screw 7 is threadedly connected to the moving frame 8, the rotation of the screw 7 causes the moving frame 8 to move along the axial direction of the screw 7, thereby driving the guide roller 4 inside the moving frame 8 to move, thereby adjusting the distance between the guide roller 4 and the bending roller 3 to adapt to metal tubes of different diameters.

[0028] The drive assembly 10 inside the control box 1 is started. The output shaft of the drive assembly 10 drives the bending roller 3 to rotate. During the rotation of the bending roller 3, the metal tube, supported and guided by the guide roller 4, bends and deforms around the bending roller 3, realizing the bending operation of the metal tube. The operator can control the speed, rotation angle and other parameters of the drive assembly 10 through the controller 2 to precisely control the bending angle and shape of the metal tube.

[0029] For smaller metal tubes, the metal tube can be placed between the bending roller 3 and the guide roller 4. By rotating the clamping bolt 12 on the side wall of the limiting frame 9, the end of the clamping bolt 12 is brought closer to and clamped to the metal tube, thereby fixing the metal tube and preventing the metal tube from loosening or shifting due to its small diameter during bending, thus ensuring the stability of the metal tube during bending.

[0030] Equipment movement and installation: If the equipment needs to be moved, use the locking casters at the bottom of the mounting column 13 at the lower end of the control box 1 to push the equipment to the required position, and then lock the traveling wheels 14 to make the equipment stable and fixed. The connecting plate 16 at the lower end of the mounting frame 6 is connected by screws. The mounting frame 6 can be disassembled during the equipment's shipment to facilitate transportation. It can then be reassembled on-site to ensure convenient equipment installation.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An adjustable and fixed metal tube bending device, comprising a control box (1), characterized in that, The control box (1) is equipped with a controller (2), a mounting frame (6) and a moving frame (8). The control box (1) is equipped with a drive assembly (10). The output shaft of the drive assembly (10) is fixedly connected to a bending roller (3). The side wall of the bending roller (3) is equipped with a limit frame (9) through a connector (11). The moving frame (8) is rotatably connected with multiple guide rollers (4). The side wall of the mounting frame (6) is equipped with an adjustment mechanism for adjusting the position of the moving frame (8). The adjustment mechanism includes a mounting plate (5) set in the mounting frame (6). The side wall of the mounting plate (5) is rotatably connected with a screw (7). The screw (7) is threadedly connected to the moving frame (8). The mounting frame (6) is equipped with a drive mechanism for driving the mounting plate (5) to move.

2. The adjustable and fixed metal tube bending device according to claim 1, characterized in that, The driving mechanism includes a hydraulic cylinder (15) fixedly connected to the inner wall of the mounting frame (6), the output end of the hydraulic cylinder (15) being fixedly connected to the side wall of the mounting plate (5), and the mounting plate (5) being slidably connected to the mounting frame (6).

3. The adjustable and fixed metal tube bending device according to claim 2, characterized in that, The limiting frame (9) has multiple side walls with through bolts (12), and the control box (1) has a through groove at the top.

4. The adjustable and fixed metal tube bending device according to claim 3, characterized in that, The control box (1) is provided with multiple mounting posts (13) at its lower end, and the mounting posts (13) are provided with walking wheels (14) at their lower ends.

5. The adjustable and fixed metal tube bending device according to claim 4, characterized in that, The traveling wheel (14) is a locking universal wheel, and the through groove has a C-shaped cross section.

6. The adjustable and fixed metal tube bending device according to claim 5, characterized in that, The lower end of the mounting frame (6) is fixedly connected to a connecting plate (16), and the side wall of the connecting plate (16) is provided with multiple screws.