Manual pipe bending machine
By designing the base, stop, and detachable pressure roller structure of the manual pipe bending machine, the problems of inconvenient movement and complex use of existing pipe bending machines have been solved, achieving convenient operation, precise bending, and extended equipment life.
Patent Information
- Application Number
- CN202520475330.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-18
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-03-18
AI Technical Summary
Existing pipe bending machines are inconvenient to move, complex to use, and expensive, which affects the economic efficiency and practicality of production.
A manual pipe bending machine is designed, including a base, a stop, a bending mechanism, and detachable pressure rollers and baffles. The steel pipe is bent by the pressure roller clamping it and rotating it around the connector. The baffle increases stability and friction. The pressure roller is provided with a semi-circular groove to apply pressure evenly. The extended handle reduces the physical exertion of the operator.
It enables convenient movement, simple operation, improved processing accuracy and finished product quality, avoids steel pipe deformation and dents, adapts to different specifications of steel pipes, and extends equipment life.
Smart Images
Figure CN223888766U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pipe bending machine technology, specifically to a manual pipe bending machine. Background Technology
[0002] In daily production and life, pipe bending is used in many aspects. What seems like a simple thing requires the help of tools. Since most pipe bending machines are heavy, inconvenient to move, complex to use, and expensive, they cause inconvenience to daily production and affect the economy and practicality of production. Utility Model Content
[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide a manual pipe bending machine to solve problems such as inconvenience in movement and complexity in use.
[0004] To achieve the above objectives, this utility model provides the following technical solution:
[0005] A manual pipe bending machine includes: a base; a stop mounted on the base; and a bending mechanism including an upper pressure plate, a lower pressure plate, a first pressure roller, a second pressure roller, a first connecting member, a second connecting member, and a plurality of third connecting members. One end of the upper pressure plate and the lower pressure plate are rotatably connected to the base via the first connecting member, and the upper pressure plate and the lower pressure plate are fixedly connected to each other via the third connecting members. The first pressure roller is rotatably connected between the upper pressure plate and the lower pressure plate via the first connecting member, and the second pressure roller is rotatably connected between the upper pressure plate and the lower pressure plate via the second connecting member. The first pressure roller and the second pressure roller are used to clamp steel pipes.
[0006] With the above scheme, the first pressure roller and the second pressure roller can clamp the steel pipe, the upper pressure plate and the lower pressure plate rotate around the first connecting member, the stop block one end of the steel pipe from moving, and the other end of the steel pipe is bent under the rotation of the upper pressure plate and the lower pressure plate.
[0007] Furthermore, the stop includes a mounting plate and a baffle. The mounting plate is fixedly mounted on the base by bolts. The mounting plate is provided with a slot, and the baffle is provided with a mounting platform on one side. The mounting platform is fixedly mounted in the slot.
[0008] The above-mentioned further solution involves fixing the baffle in the slot on the mounting plate using a mounting bracket, thereby increasing the connection strength between the baffle and the mounting plate and enabling the baffle to more stably block the thrust when the steel pipe bends.
[0009] Furthermore, the baffle is configured as a double layer.
[0010] Through the above-mentioned further solutions, the double-layer baffle has a thickness of 16-20mm, which can not only increase the stability of the baffle, but also increase the contact area between the baffle and the steel pipe, thereby increasing the friction force, further preventing the steel pipe from moving when bending, and increasing the stress area of the steel pipe to prevent it from being dented due to excessive stress.
[0011] Furthermore, an arc-shaped groove adapted to the steel pipe is provided on one side of the baffle.
[0012] Through the above-mentioned further solutions, the arc-shaped groove can partially surround the steel pipe, increase the contact area with the steel pipe, increase the friction between them, prevent the steel pipe from moving when bending, and also prevent the steel pipe from deforming.
[0013] Furthermore, both the first and second pressure rollers are provided with semi-circular grooves that are adapted to the steel pipe, and the outer surfaces of the first and second pressure rollers are in contact with each other.
[0014] Through the aforementioned further solution, the semi-circular grooves on the first and second pressure rollers can surround the steel pipe, ensuring that the steel pipe is firmly clamped between the two pressure rollers during the bending process. This reduces the possibility of pipe deformation during bending, improves processing accuracy and finished product quality. The semi-circular grooves on the pressure rollers fit closely with the steel pipe, making the applied pressure more evenly distributed across the entire contact surface, which helps to form a smoother and more precise bending angle and avoids dents. The semi-circular grooves can also prevent unnecessary scratches or other forms of damage to the surface of the steel pipe, protecting the integrity of the steel pipe surface.
[0015] Furthermore, each of the second connecting members is fitted with a bushing, which is located between the upper pressure plate and the lower pressure plate.
[0016] Through the above further solutions, the bushing can support the upper pressure plate and the lower pressure plate, thereby controlling the distance between the upper pressure plate and the lower pressure plate.
[0017] Furthermore, the first pressure roller and the second pressure roller are the same size, and the height of the bushing is greater than the height of the first pressure roller.
[0018] Through the above-mentioned further solutions, the friction between the first and second pressure rollers and the upper and lower pressure plates can be reduced when they rotate, effectively reducing wear between them and extending the service life of the equipment.
[0019] Furthermore, the base is provided with a stop block, and the side of the mounting plate away from the arc groove contacts the stop block.
[0020] Through the above-mentioned further solutions, the stop provides additional support points for the mounting plate, which can absorb accidental impact forces to a certain extent, reduce direct damage to the mounting plate and other key components, and provide a positioning reference for installing the mounting plate.
[0021] Furthermore, the upper or lower pressure plate is rotatably connected to the base and an extension handle is provided at one end.
[0022] The above-mentioned further solutions, by extending the handle, can provide greater leverage and reduce the physical exertion of the operator.
[0023] Furthermore, the base is provided with multiple mounting holes.
[0024] The above-mentioned further solution allows for direct installation of the base via the mounting holes, which is simple and convenient.
[0025] The beneficial effects of this utility model are as follows:
[0026] 1. The first and second pressure rollers can clamp the steel pipe. The upper and lower pressure plates rotate around the first connector. The stop block one end of the steel pipe from moving, and the other end of the steel pipe is bent under the rotation of the upper and lower pressure plates.
[0027] 2. During the continuous bending of the steel pipe, the second pulley can reduce the friction on the steel pipe by rotating, further preventing the steel pipe from moving during the bending process, thereby avoiding incorrect dimensions after bending. Furthermore, by reducing the friction, the direction of the force on the steel pipe during bending is changed, thus preventing the steel pipe from denting.
[0028] 3. The upper and lower pressure plates can bend the steel pipe by 0°-180° by rotating around the first connecting piece.
[0029] 4. By disassembling the first connector, the second connector, and multiple third connectors, the first and second pressure rollers can be replaced, and the stop seat can be replaced to adapt to steel pipes of different specifications, which is simple and convenient. Attached Figure Description
[0030] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0031] Figure 2 This is a schematic diagram of the bushing structure of this utility model;
[0032] Figure 3 This is a schematic diagram of the stop structure of this utility model;
[0033] Figure 4 For the present utility model Figure 3 A magnified schematic diagram of the structure at point A in the middle.
[0034] In the diagram: 1. Base; 11. Mounting hole; 2. Stop; 21. Mounting plate; 211. Slot; 22. Baffle; 221. Slot; 222. Arc groove; 3. Bending mechanism; 31. Upper pressure plate; 311. Extension handle; 32. Lower pressure plate; 33. First pressure roller; 331. Semicircular groove; 34. Second pressure roller; 35. First connecting piece; 36. Second connecting piece; 37. Third connecting piece; 371. Bushing; 4. Stop block. Detailed Implementation
[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.
[0036] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "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 the invention and for 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 the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0037] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. Furthermore, the technical features involved in the different embodiments of this invention described below can be combined with each other as long as they do not conflict with each other. Example
[0038] Reference Figure 1As shown, a manual pipe bending machine includes a base 1. An upper pressure plate 31 and a lower pressure plate 32 are rotatably connected to the base 1 via a first connecting member 35. The upper pressure plate 31 and the lower pressure plate 32 are fixedly connected end-to-end to the first connecting member 35 via two third connecting members 37. A first pressure roller 33 and a second pressure roller 34 are rotatably connected between the upper pressure plate 31 and the lower pressure plate 32. The first pressure roller 33 is rotatably connected to the first connecting member 35, and the second pressure roller 34 is rotatably connected between the upper pressure plate 31 and the lower pressure plate 32 via a second connecting member 36. The first pressure roller 33 and the second pressure roller 34 are used to clamp steel pipes. A stop 2 is fixedly installed on the base 1 by screws. The first pressure roller 33 and the second pressure roller 34 can clamp steel pipes. The upper pressure plate 31 and the lower pressure plate 32 rotate around the first connecting member 35. The stop 2 prevents one end of the steel pipe from moving, and the other end of the steel pipe is bent under the rotation of the upper pressure plate 31 and the lower pressure plate 32.
[0039] During the continuous bending of the steel pipe, the second pulley can reduce the friction on the steel pipe by rotating, further preventing the steel pipe from moving during the bending process, thus avoiding incorrect dimensions after bending. Furthermore, by reducing the friction, the direction of the force on the steel pipe during bending is changed, thereby preventing the steel pipe from denting.
[0040] The upper pressure plate 31 and the lower pressure plate 32 can rotate around the first connecting member 35 to bend the steel pipe from 0° to 180°.
[0041] The first pressure roller 33 and the second pressure roller 34 can be replaced by disassembling the first connector 35, the second connector 36 and the multiple third connectors 37, and the stop seat 2 can be replaced to adapt to steel pipes of different specifications, which is simple and convenient.
[0042] Among them, reference Figure 2 As shown, both the first pressure roller 33 and the second pressure roller 34 are provided with semi-circular grooves 331 adapted to the steel pipe. The outer surfaces of the first pressure roller 33 and the second pressure roller 34 are in contact with each other. Through the semi-circular grooves 331 on the first pressure roller 33 and the second pressure roller 34, the steel pipe can be surrounded, ensuring that the steel pipe is firmly clamped between the two pressure rollers during the bending process. This reduces the possibility of pipe deformation during the bending process, improves processing accuracy and finished product quality. The semi-circular grooves 331 on the pressure rollers fit tightly with the steel pipe, making the applied pressure more evenly distributed across the entire contact surface. This helps to form a smoother and more precise bending angle and avoids dents. The semi-circular grooves 331 can also prevent unnecessary scratches or other forms of damage to the surface of the steel pipe, protecting the integrity of the steel pipe surface.
[0043] The upper pressure plate 31 or the lower pressure plate 32 is rotatably connected to the base 1 and is provided with an extension handle 311 at one end. The extension handle 311 can provide a greater leverage effect and reduce the physical exertion of the operator.
[0044] Reference Figure 3 As shown, the baffle 2 includes a mounting plate 21 and a baffle 22. The mounting plate 21 is fixedly mounted on the base 1 by bolts. The mounting plate 21 is provided with a slot 211. The baffle 22 is provided with a mounting platform 221 on one side. The mounting platform 221 is welded into the slot 211. The baffle 22 is fixedly mounted in the slot 211 on the mounting plate 21 by the mounting platform 221, thereby increasing the connection strength between the baffle 22 and the mounting plate 21, so that the baffle 22 can more stably block the thrust when the steel pipe bends. By welding, the mounting platform 221 on the baffle 22 is directly welded into the slot 211 on the mounting plate 21, making the whole structure more stable.
[0045] The baffle 22 is double-layered, with a thickness of 16-20mm. This not only increases the stability of the baffle 22 but also increases the contact area between the baffle 22 and the steel pipe, thereby increasing the friction and further preventing the steel pipe from moving when bending. It also increases the stress area of the steel pipe, preventing it from being dented due to excessive stress.
[0046] The baffle 22 has an arc-shaped groove 222 on one side that is adapted to the steel pipe. The arc-shaped groove 222 can partially surround the steel pipe, increase the contact area with the steel pipe, increase the friction between them, and prevent the steel pipe from moving when bending.
[0047] Reference Figure 2 As shown, each of the two second connecting members 36 is fitted with a bushing 371. The bushing 371 is located between the upper pressure plate 31 and the lower pressure plate 32. The bushing 371 can support the upper pressure plate 31 and the lower pressure plate 32, thereby controlling the distance between the upper pressure plate 31 and the lower pressure plate 32.
[0048] The first pressure roller 33 and the second pressure roller 34 are the same size. The height of the bushing 371 is greater than the height of the first pressure roller 33. When the first pressure roller 33 and the second pressure roller 34 rotate, they can reduce the friction with the upper pressure plate 31 and the lower pressure plate 32, effectively reduce the wear between them, and extend the service life of the equipment.
[0049] Reference Figure 4 As shown, the base 1 is provided with a stop block 4. The side of the mounting plate 21 away from the arc groove 222 is in contact with the stop block 4. The stop block 4 provides an additional support point for the mounting plate 21, which can absorb accidental impact to a certain extent, reduce direct damage to the mounting plate 21 and other key components, and provide a positioning reference for the mounting plate 21.
[0050] Reference Figure 1 As shown, the base 1 is provided with two mounting holes 11, which can be used to directly install the base 1, which is simple and convenient.
[0051] It should be noted that the entire device can be installed through the mounting holes 11 on the base 1, making the installation simple, easy to operate, convenient to move, and saving time and effort.
[0052] The working principle of this utility model is as follows:
[0053] Insert the steel pipe between the first pressure roller 33 and the second pressure roller 34, and place the steel pipe into the arc groove 222 on the baffle 22. Rotate the upper pressure plate 31 and the lower pressure plate 32 around the first connector 35 by extending the handle 311, and bend the steel pipe by the first pressure roller 33 and the second pressure roller 34.
[0054] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A manual pipe bending machine, characterized in that, include: Base (1); A stop (2) is mounted on a base (1); The bending mechanism (3) includes an upper pressure plate (31), a lower pressure plate (32), a first pressure roller (33), a second pressure roller (34), a first connecting piece (35), a second connecting piece (36), and a plurality of third connecting pieces (37). One end of the upper pressure plate (31) and the lower pressure plate (32) are rotatably connected to the base (1) through the first connecting piece (35). The upper pressure plate (31) and the lower pressure plate (32) are fixedly connected to each other through the third connecting piece (37). The first pressure roller (33) is rotatably connected between the upper pressure plate (31) and the lower pressure plate (32) through the first connecting piece (35). The second pressure roller (34) is rotatably connected between the upper pressure plate (31) and the lower pressure plate (32) through the second connecting piece (36). The first pressure roller (33) and the second pressure roller (34) are used to clamp the steel pipe.
2. The manual pipe bending machine according to claim 1, characterized in that: The stop (2) includes a mounting plate (21) and a baffle (22). The mounting plate (21) is fixedly mounted on the base (1) by bolts. The mounting plate (21) is provided with a slot (211). The baffle (22) is provided with a mounting platform (221) on one side. The mounting platform (221) is fixedly installed in the slot (211).
3. The manual pipe bending machine according to claim 2, characterized in that: The baffle (22) is configured as a double layer.
4. The manual pipe bending machine according to claim 2, characterized in that: The baffle (22) has an arc-shaped groove (222) on one side that is compatible with the steel pipe.
5. A manual pipe bending machine according to claim 1, characterized in that: The first pressure roller (33) and the second pressure roller (34) are each provided with a semi-circular groove (331) adapted to the steel pipe, and the outer side of the first pressure roller (33) and the outer side of the second pressure roller (34) are in contact with each other.
6. A manual pipe bending machine according to claim 1, characterized in that: Each of the third connectors (37) is fitted with a bushing (371), which is located between the upper pressure plate (31) and the lower pressure plate (32).
7. A manual pipe bending machine according to claim 6, characterized in that: The first pressure roller (33) and the second pressure roller (34) are the same size, and the height of the bushing (371) is greater than the height of the first pressure roller (33).
8. A manual pipe bending machine according to claim 2, characterized in that: The base (1) is provided with a stop block (4), and the side of the mounting plate (21) away from the arc groove (222) is in contact with the stop block (4).
9. A manual pipe bending machine according to claim 1, characterized in that: The upper pressure plate (31) or lower pressure plate (32) is rotatably connected to the base (1) and an extension handle (311) is provided on one end.
10. A manual pipe bending machine according to claim 1, characterized in that: The base (1) is provided with multiple mounting holes (11).