Adjustable metal pipe fitting bending tool
By designing the support and bending mechanisms, the problem of inconvenient angle and inner diameter adjustment in existing devices has been solved, enabling precise bending of metal pipes and adaptability to various outer diameters, thus improving the operability of the device.
Patent Information
- Application Number
- CN202520288058.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-23
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-02-23
AI Technical Summary
Existing metal pipe bending devices are difficult to precisely control the bending angle and inner diameter, and are not convenient for adjusting the bending of pipes with different outer diameters.
The system employs a support mechanism and a bending mechanism. The metal tube is fixedly supported and its angle is adjusted by a support base, a two-way lead screw, and a motor-driven limiting column. The bending angle is indicated by a spotlight, and the inner diameter is adjusted by an adjustable bending seat.
It enables precise control of the bending angle and inner diameter adjustment of metal pipe fittings, adapts to the bending requirements of pipe fittings with different outer diameters, and improves the applicability of the device.
Smart Images

Figure CN223833190U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of adjustable metal pipe fittings, and more specifically, to an adjustable metal pipe fitting bending fixture. Background Technology
[0002] Metal pipes are widely used in production and daily life. However, depending on the usage conditions, it is sometimes necessary to bend metal pipes.
[0003] A search revealed that utility model patent CN222001399U discloses a bending device for processing metal pipe fittings, including a bending assembly. The bending assembly includes a worktable and a motor. Four columns are symmetrically fixedly connected to the center of the upper surface of the worktable, and a horizontal plate is fixedly connected to the top of each column. A positioning seat is fixedly connected to the upper surface of the horizontal plate. When the device is in operation, the metal pipe fitting is placed on the rollers. The piston rod of the electric cylinder extends, causing the pressure seat to move downwards. The pressure seat squeezes the metal pipe fitting, bending it until it contacts the positioning seat. The motor then drives the screw to rotate clockwise, causing two nut seats to move closer together along the outer wall of the screw, which in turn moves the two rollers closer together. The rollers squeeze the metal pipe fitting, thereby increasing the bending angle and allowing for adjustment of the bending angle to meet different processing and production needs, thus improving applicability. However, the aforementioned patents still have the following shortcomings: when bending metal pipes, it is not convenient to control the bending angle, nor is it convenient to adjust the inner diameter of the bent metal pipe, and it is also not convenient to bend pipes with different outer diameters. To address this, we propose an adjustable metal pipe bending fixture. Utility Model Content
[0004] In view of the problems existing in the prior art, the purpose of this utility model is to provide an adjustable metal pipe bending fixture.
[0005] To solve the above problems, the present invention adopts the following technical solution:
[0006] An adjustable metal pipe bending fixture includes a worktable, a support mechanism on the top of the worktable, a support platform fixedly connected to the top of the worktable, an L-shaped bracket fixedly connected to the rear of the worktable, the top of the L-shaped bracket extending to the top of the worktable and equipped with a bending mechanism, a sector plate fixedly connected to the inner wall of the L-shaped bracket, an angle gauge on the front of the sector plate, a rotating base shaft fixedly connected to the front of the sector plate, two guide rods rotatably connected to the rotating base shaft, and multiple spotlights fixedly connected to the front of the two guide rods.
[0007] In a preferred embodiment of this utility model, the support mechanism includes two support seats fixedly connected to the top surface of the workbench, a first bidirectional lead screw rotatably connected between the two support seats, a first motor fixedly mounted on the outer side of one of the support seats, the output shaft of the first motor connected to the end of the first bidirectional lead screw, movable seats threadedly sleeved at both ends of the first bidirectional lead screw, arc-shaped seats fixedly connected to the top surfaces of the two movable seats, movable grooves formed on the top surfaces of the two movable seats, second bidirectional lead screws rotatably connected to the inner cavities of the two movable grooves, second motors fixedly mounted at the ends of the two movable seats, the output shafts of the second motors connected to the ends of the second bidirectional lead screws, movable blocks threadedly sleeved on the outer sides of both ends of the second bidirectional lead screws, and limit posts rotatably connected to the top of each movable block.
[0008] As a preferred embodiment of this utility model, the bending mechanism includes a slide groove formed on the top of the L-shaped bracket and an electric telescopic rod fixedly installed at the rear of the L-shaped bracket. A slide seat is slidably connected to the inner cavity of the slide groove. The output end of the electric telescopic rod extends into the inner cavity of the slide groove and is connected to the slide seat. A plurality of hydraulic rods are fixedly installed on the slide seat. The output ends of the plurality of hydraulic rods extend to the bottom of the slide seat and are respectively fixedly connected to bending seats. The outer diameter of the bottom end of the plurality of bending seats gradually increases from front to back.
[0009] As a preferred embodiment of this utility model, a control panel is fixedly installed on the front of the workbench.
[0010] In a preferred embodiment of this utility model, two sliding rods are fixedly sleeved between the two support seats, and the sliding rods are movably sleeved with the movable seat, with the bottom surface of the movable seat fitting against the top surface of the worktable.
[0011] In a preferred embodiment of this utility model, the side of the moving block and the inner wall of the moving groove are in contact.
[0012] Compared with existing technologies, the advantages of this utility model are:
[0013] (1) In this utility model, before bending the metal tube, the two marker frames are moved to the required angle and the spotlight emits light forward. When bending the metal tube, the bending angle of the metal tube is aligned with the two marker frames, and the light from the spotlight shines on the metal tube, indicating that the metal tube has been bent to the required angle. This realizes the function of controlling the bending angle of the metal tube and has good practicality.
[0014] (2) In this utility model, the metal tube is supported by the arc-shaped seats on the two movable seats, and the limiting post limits the side of the metal tube by the threaded cooperation between the second bidirectional screw and the movable block, thereby realizing the function of fixing and supporting the metal tube. It can also bend metal tubes with different outer diameters. In addition, multiple bending seats are set below the slide, and the outer diameter of the bottom of the bending seats is different. The position of the bending seats can be adjusted by the electric telescopic rod so as to select the appropriate bending seat to bend the metal tube, thereby adjusting the inner diameter of the bent metal tube. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0016] Figure 2 This is a schematic diagram of the structure of the sector-shaped plate of this utility model;
[0017] Figure 3 This is a schematic diagram of the structure of the bending seat of this utility model;
[0018] Figure 4 This is a schematic diagram of the structure of the movable base of this utility model.
[0019] Explanation of the labels in the diagram:
[0020] 1. Workbench; 2. Support platform; 3. Support mechanism; 4. L-shaped bracket; 5. Bending mechanism; 6. Sector plate; 7. Angle ruler; 8. Rotating base shaft; 9. Marker frame; 10. Spotlight; 11. Support base; 12. First double-acting lead screw; 13. Slide rod; 14. First motor; 15. Moving seat; 16. Arc-shaped seat; 17. Moving groove; 18. Moving block; 19. Limiting post; 20. Second double-acting lead screw; 21. Second motor; 22. Control panel; 23. Slide groove; 24. Electric telescopic rod; 25. Slide seat; 26. Hydraulic rod; 27. Bending seat. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.
[0022] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0024] Example:
[0025] Please see Figure 1-4 An adjustable metal pipe bending fixture includes a workbench 1, a support mechanism 3 on the top of the workbench 1, a support platform 2 fixedly connected to the top of the workbench 1, an L-shaped bracket 4 fixedly connected to the rear of the workbench 1, the top of the L-shaped bracket 4 extending to the top of the workbench 1 and equipped with a bending mechanism 5, a fan-shaped plate 6 fixedly connected to the inner wall of the L-shaped bracket 4, an angle ruler 7 on the front of the fan-shaped plate 6, a rotating base shaft 8 fixedly connected to the front of the fan-shaped plate 6, two guide rods 9 being damped and rotatably connected to the rotating base shaft 8, and multiple spotlights 10 fixedly connected to the front of the two guide rods 9.
[0026] For details, please refer to Figures 1 to 4 The support mechanism 3 includes two support seats 11 fixedly connected to the top surface of the workbench 1. A first bidirectional lead screw 12 is rotatably connected between the two support seats 11. A first motor 14 is fixedly installed on the outer side of one support seat 11. The output shaft of the first motor 14 is connected to the end of the first bidirectional lead screw 12. Movable seats 15 are threadedly sleeved at both ends of the first bidirectional lead screw 12. Arc-shaped seats 16 are fixedly connected to the top surfaces of the two movable seats 15. Movable grooves 17 are opened on the top surfaces of the two movable seats 15. Second bidirectional lead screws 20 are rotatably connected to the inner cavities of the two movable grooves 17. Second motors 21 are fixedly installed at the ends of the two movable seats 15. The output shaft of the second motor 21 is connected to the end of the second bidirectional lead screw 20. Movable blocks 18 are threadedly sleeved on the outer sides of both ends of the second bidirectional lead screw 20. Limiting posts 19 are rotatably connected to the top of each movable block 18.
[0027] For details, please refer to Figures 1 to 3 The bending mechanism 5 includes a slide groove 23 opened on the top of the L-shaped bracket 4 and an electric telescopic rod 24 fixedly installed at the rear of the L-shaped bracket 4. The inner cavity of the slide groove 23 is slidably connected to a slide seat 25. The output end of the electric telescopic rod 24 extends into the inner cavity of the slide groove 23 and is connected to the slide seat 25. Multiple hydraulic rods 26 are fixedly installed on the slide seat 25. The output ends of the multiple hydraulic rods 26 all extend to the bottom of the slide seat 25 and are respectively fixedly connected to bending seats 27. The outer diameter of the bottom end of the multiple bending seats 27 gradually increases from front to back.
[0028] In this embodiment, the electric telescopic rod 24 is used to drive the slide 25 and multiple bending seats 27 to move, so that the required bending seat 27 is moved directly above the support platform 2.
[0029] For details, please refer to Figure 1 A control panel 22 is fixedly installed on the front of the workbench 1.
[0030] In this embodiment, the device is limited by the control panel 22.
[0031] For details, please refer to Figure 1 and Figure 2 Two slide rods 13 are fixedly connected between the two support seats 11. The slide rods 13 are movably connected to the movable seat 15. The bottom surface of the movable seat 15 is in contact with the top surface of the worktable 1.
[0032] In this embodiment, the movable seat 15 is limited by the movable sleeve between the slide rod 13 and the movable seat 15, so that the movable seat 15 can only move along the axial direction of the first bidirectional lead screw 12.
[0033] For details, please refer to Figure 4 The side of the movable block 18 fits against the inner wall of the movable groove 17.
[0034] In this embodiment, the inner wall of the moving groove 17 is used to limit the moving block 18, so that the moving block 18 can only move along the axial direction of the second bidirectional lead screw 20.
[0035] Working principle: In use, firstly, the first motor 14 is started to drive the first bidirectional lead screw 12 to rotate. The distance between the two arc-shaped seats 16 is adjusted through the threaded engagement between the first bidirectional lead screw 12 and the two moving seats 15, so that the metal tube to be bent can be placed on the two arc-shaped seats 16. Then, the two second motors 21 are started to drive the two second bidirectional lead screws 20 to rotate. Through the threaded engagement between the second bidirectional lead screws 20 and the two moving blocks 18, the two limiting posts 19 are driven to move closer to each other, so that the side of the limiting post 19 is in contact with the side of the metal tube, thereby limiting the metal tube. Then, the electric telescopic mechanism is started. Rod 24 drives slide 25 and multiple bending seats 27 to move back and forth, so that the bending seat 27 with the required bottom outer diameter is moved to the center of the metal tube. At the same time, according to the angle ruler 7, the two marker frames 9 are moved to the bending angle of the metal tube, and the spotlight 10 is turned on to emit light forward. Finally, one of the hydraulic rods 26 is activated to move the bending seat 27 above the metal tube downward. The bending seat 27 pushes the center of the metal tube downward until the bending angle of the metal tube is equal to the angle between the two marker frames 9. The light emitted from the spotlight 10 shines on the bent metal tube to indicate that the metal tube has been bent to the required angle.
[0036] 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 its improved concept should be covered within the protection scope of the present utility model.
Claims
1. An adjustable metal pipe bending fixture, comprising a worktable (1), characterized in that: The top of the workbench (1) is provided with a support mechanism (3), the top of the workbench (1) is fixedly connected with a support platform (2), the rear of the workbench (1) is fixedly connected with an L-shaped bracket (4), the top of the L-shaped bracket (4) extends to the top of the workbench (1) and is provided with a bending mechanism (5), the inner wall of the L-shaped bracket (4) is fixedly connected with a fan-shaped plate (6), the front of the fan-shaped plate (6) is provided with an angle ruler (7), the front of the fan-shaped plate (6) is fixedly connected with a rotating base shaft (8), the rotating base shaft (8) is damped and rotatably connected with two marker frames (9), and the front of the two marker frames (9) is fixedly connected with multiple spotlights (10).
2. The adjustable metal pipe bending fixture according to claim 1, characterized in that: The support mechanism (3) includes two support seats (11) fixedly connected to the top surface of the workbench (1). A first bidirectional lead screw (12) is rotatably connected between the two support seats (11). A first motor (14) is fixedly installed on the outside of one of the support seats (11). The output shaft of the first motor (14) is connected to the end of the first bidirectional lead screw (12). Movable seats (15) are threaded onto both ends of the first bidirectional lead screw (12). Arc-shaped seats (16) are fixedly connected to the top surfaces of the two movable seats (15). The top surfaces of the two movable seats (15) are respectively provided with movable grooves (17), and the inner cavities of the two movable grooves (17) are respectively rotatably connected to the second bidirectional lead screws (20). The ends of the two movable seats (15) are respectively fixedly installed with second motors (21). The output shaft of the second motors (21) is connected to the end of the second bidirectional lead screws (20). The outer sides of the two ends of the second bidirectional lead screws (20) are respectively threaded with movable blocks (18), and the top of each movable block (18) is rotatably connected to a limit post (19).
3. The adjustable metal pipe bending fixture according to claim 2, characterized in that: The bending mechanism (5) includes a groove (23) opened on the top of the L-shaped bracket (4) and an electric telescopic rod (24) fixedly installed at the rear of the L-shaped bracket (4). The inner cavity of the groove (23) is slidably connected to a slide seat (25). The output end of the electric telescopic rod (24) extends into the inner cavity of the groove (23) and is connected to the slide seat (25). Multiple hydraulic rods (26) are fixedly installed on the slide seat (25). The output ends of the multiple hydraulic rods (26) extend to the bottom of the slide seat (25) and are respectively fixedly connected to bending seats (27). The outer diameter of the bottom end of the multiple bending seats (27) gradually increases from front to back.
4. The adjustable metal pipe bending fixture according to claim 1, characterized in that: A control panel (22) is fixedly installed on the front of the workbench (1).
5. The adjustable metal pipe bending fixture according to claim 2, characterized in that: Two slide rods (13) are fixedly sleeved between the two support seats (11). The slide rods (13) and the movable seat (15) are movably sleeved together. The bottom surface of the movable seat (15) is in contact with the top surface of the worktable (1).
6. The adjustable metal pipe bending fixture according to claim 2, characterized in that: The side of the moving block (18) is in contact with the inner wall of the moving groove (17).
Citation Information
Patent Citations
Bending device for metal pipe fitting machining and production
CN222001399U