Bending device for oil pipe machining
By designing an oil pipe bending device that includes a support base and a limiting frame, the problem of poor adjustment convenience of traditional devices is solved, and efficient and precise bending of oil pipes of different specifications is achieved, thereby improving production efficiency and the quality and reliability of pipe fittings.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGZHOU TIANHE HOSE PRODS
- Filing Date
- 2025-05-12
- Publication Date
- 2026-04-21
AI Technical Summary
Traditional tubing bending devices are not very convenient to adjust, require the replacement of special molds, resulting in low production efficiency. They are also difficult to guarantee the positioning accuracy and bending angle control accuracy of the tubing, which can easily lead to pipe wall wrinkles, cracks or dimensional deviations, affecting the surface quality and mechanical properties of the pipe fittings.
A bending device for oil pipe processing was designed, comprising components such as a receiving base, a fixed base frame, a limiting frame, a threaded push rod, a sliding sleeve, a limiting spring, and a pressure roller. Through a threaded transmission structure and an elastic buffer device, it achieves precise positioning and stable bending of oil pipes with different diameters and wall thicknesses, avoiding damage caused by rigid contact.
It enables efficient processing of oil pipes of different specifications without changing molds, improves production efficiency, ensures the dimensional accuracy and surface quality of oil pipes, and enhances the mechanical properties and reliability of pipe fittings.
Smart Images
Figure CN224143249U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of bending devices for oil pipe processing, and in particular to a bending device for oil pipe processing. Background Technology
[0002] In industries such as petroleum, chemical, and machinery manufacturing, oil pipes are core components for transporting liquids and gases, and their processing quality directly affects the system's sealing performance, reliability, and service life. The bending process is a crucial step in oil pipe processing, requiring straight pipes to bend into fittings with specific angles and curvatures according to design requirements to meet the installation needs of complex piping systems. Traditional oil pipe bending devices have shortcomings in practical applications. For oil pipes of different diameters and wall thicknesses, traditional devices offer poor adjustment convenience, often requiring the replacement of specialized molds, leading to low production efficiency. Furthermore, the positioning accuracy and bending angle control accuracy of the oil pipe during bending are difficult to guarantee, easily resulting in problems such as pipe wall wrinkles, cracks, or dimensional deviations, leading to uneven bending force distribution and affecting the surface quality and mechanical properties of the fittings. Therefore, developing a processing device that can adapt to oil pipes of different specifications, provides precise positioning, and ensures a stable bending process has become an urgent technical problem to be solved in this field. Utility Model Content
[0003] To address the shortcomings of existing technologies, this utility model provides a bending device for oil pipe processing, which solves the deficiencies of traditional oil pipe bending devices in practical applications. For oil pipes of different diameters and wall thicknesses, the adjustment convenience of traditional devices is poor, often requiring the replacement of special molds, resulting in low production efficiency. During the bending process, it is difficult to guarantee the positioning accuracy and bending angle control accuracy of the oil pipe, which can easily lead to problems such as pipe wall wrinkles, cracks, or dimensional deviations, resulting in uneven distribution of bending force and affecting the surface quality and mechanical properties of the pipe fittings.
[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a bending device for oil pipe processing, comprising a receiving base, a fixed base frame fixedly connected to the rear section of the receiving base, a limit frame fixedly connected to the top of the fixed base frame, a top frame fixedly connected to the top of the limit frame, a fixed sliding rod fixedly connected to the inner wall of the top frame, limit springs sleeved on the outer walls of the upper and lower sections of the fixed sliding rod, a threaded push rod threadedly connected to the inner wall of the top of the limit frame, a threaded connecting block threadedly connected to the outer wall of the upper section of the threaded push rod, and the top of the threaded push rod... A connecting block is fixedly connected to the part, and a sliding pin is slidably connected to the inner wall of the limiting hole opened in the connecting block. A connecting ring is rotatably connected to the bottom of the threaded push rod, and a traction seat is fixedly connected to the bottom of the connecting ring. Sliding sleeves are fixedly connected to both ends of the traction seat. A rotating roller is fixedly connected to one end of the back of the traction seat, and a pressure roller is rotatably connected to one end of the front of the traction seat. A bending limiting plate is fixedly connected to the top of the receiving base. A rotating roller is provided on the inner wall of the limiting slots opened at equal intervals on the top of the bending limiting plate. A pressure rotating roller is fixedly connected to the outer wall of the rotating roller.
[0005] A further improvement is that the limiting frame has a limiting slide opening, the rotating roller is slidably connected to the inner wall of the limiting slide opening, and the traction seat is slidably connected to the front of the limiting frame; the rotating roller fixed on the back of the traction seat is embedded in the limiting slide opening of the limiting frame, and can roll in the slide opening when the traction seat moves, reducing frictional resistance; the pressure roller rotatably connected on the front extends to the top of the symmetrical bending limiting plate, and when the traction seat moves downward, the pressure roller applies downward pressure to the oil pipe placed on the bending limiting plate.
[0006] A further improvement is that the sliding sleeve is slidably connected to the outer wall of the fixed slide rod; the sliding sleeve is located at the top of the fixed slide rod, the limiting spring is in a naturally extended state, the pressure roller and the pressure roller at the top of the bending limiting plate maintain an initial distance, the oil pipe is placed on the pressure roller, and both ends are initially fixed by an external positioning device.
[0007] A further improvement is that the limiting spring is located in the upper and lower sections of the sliding sleeve; the drive threaded push rod rotates and descends, and the traction seat moves down through the connecting ring. The sliding sleeve compresses the lower limiting spring, the pressure roller contacts the oil pipe and gradually applies pressure, the oil pipe bends under the clamping of the pressure roller and the rotating roller, and the rotating roller slides down synchronously in the limiting slide, keeping the traction seat moving smoothly.
[0008] A further improvement is that the bending limiting plates are symmetrically arranged on the front and rear sections of the top of the receiving base; the sliding pins that are slidably connected in the limiting holes of the connecting block can be inserted and fixed after the threaded push rod is adjusted to the target position, so as to prevent the threaded push rod from rotating due to vibration and other factors during the processing and ensure stable pressure during the bending process.
[0009] A further improvement is that the bottom of the fixed slide rod is fixedly connected to the inner wall of the receiving base; the sliding sleeves at both ends of the traction seat are sleeved on the outer wall of the fixed slide rod, and the limiting springs set in the upper and lower sections of the sliding sleeve provide elastic buffering; when the traction seat moves up and down with the threaded push rod, the sliding sleeve slides on the fixed slide rod, and the limiting spring can absorb the impact force generated during the bending process, avoiding damage to the oil pipe caused by rigid collision.
[0010] A further improvement is that the pressure roller extends to the top of the symmetrically arranged bending limiting plate; the pressure roller contacts the oil pipe and gradually applies pressure, the oil pipe bends under the clamping of the pressure roller and the rotating roller, and the rotating roller slides down synchronously in the limiting slide, keeping the traction seat moving smoothly; after bending is completed, the threaded push rod is rotated in the opposite direction, the traction seat quickly resets under the elastic force of the upper limiting spring, the sliding pin is re-inserted into the limiting hole of the connecting block, the position of the threaded push rod is locked, and it waits for the next processing.
[0011] By means of the above technical solution, this utility model provides a bending device for oil pipe processing, which has at least the following beneficial effects:
[0012] 1. The threaded transmission structure of the threaded push rod and threaded connecting block of this utility model can precisely control the pressure and bending angle of the pressure roller on the oil pipe by adjusting the vertical stroke of the traction seat through rotation. It can adapt to the processing needs of oil pipes with different diameters and wall thicknesses without changing special molds. At the same time, the sliding sleeve and upper and lower limit springs that are fitted on the outer wall of the fixed slide rod provide stable sliding guidance and automatically adapt to the differences in oil pipe materials through elastic deformation, avoiding pipe damage caused by rigid contact. This greatly reduces the downtime and cost caused by changing molds in traditional devices and significantly improves production efficiency.
[0013] 2. The bending limiting plates of this utility model are symmetrically arranged on the top of the receiving base. The rotating roller and the pressure roller at the top of the plate form a continuous support surface, ensuring that the oil pipe is subjected to balanced force on both sides during bending, avoiding deviation or twisting. The pressure roller and the pressure roller on the front of the traction seat cooperate with each other, and the bending rate can be precisely adjusted by controlling the precise stroke of the threaded push rod. In addition, the sliding cooperation between the limiting slide of the limiting frame and the rotating roller ensures the stability of the vertical movement of the traction seat. Combined with the buffering effect of the limiting spring, it effectively reduces problems such as pipe wall wrinkling and cracking caused by vibration or uneven force during bending, so that the processed oil pipe has higher dimensional accuracy and surface quality, significantly improving the mechanical properties and reliability of the pipe fitting. Attached Figure Description
[0014] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application.
[0015] In the attached diagram:
[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0017] Figure 2 This is a partially enlarged structural schematic diagram of the present invention;
[0018] Figure 3 This is a schematic diagram of the inclined structure of this utility model;
[0019] Figure 4 This is a schematic diagram of the back side structure of this utility model.
[0020] In the diagram: 1. Receiving base; 2. Fixed base frame; 3. Limiting frame; 4. Top frame; 5. Threaded connecting block; 6. Threaded push rod; 7. Connecting block; 8. Sliding pin; 9. Rotating roller; 10. Traction seat; 11. Connecting ring; 12. Pressure roller; 13. Sliding sleeve; 14. Fixed slide rod; 15. Limiting spring; 16. Pressing limiting plate; 17. Rotating roller; 18. Pressing rotating roller. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0022] Traditional tubing bending devices have shortcomings in practical applications. For tubing of different diameters and wall thicknesses, traditional devices offer poor adjustment convenience, often requiring the replacement of specialized molds, leading to low production efficiency. Furthermore, the positioning accuracy and bending angle control accuracy of the tubing during bending are difficult to guarantee, easily resulting in problems such as tubing wall wrinkles, cracks, or dimensional deviations. This also leads to uneven bending force distribution, affecting the surface quality and mechanical properties of the tubing. This embodiment provides a bending device for tubing processing; please refer to... Figures 1-4An embodiment provides a bending device for oil pipe processing, including a receiving base 1, a fixed base frame 2 fixedly connected to the rear section of the receiving base 1, a limit frame 3 fixedly connected to the top of the fixed base frame 2, a top frame 4 fixedly connected to the top of the limit frame 3, a fixed slide rod 14 fixedly connected to the inner wall of the top frame 4, limit springs 15 sleeved on the outer walls of the upper and lower sections of the fixed slide rod 14, a threaded push rod 6 threadedly connected to the inner wall of the top of the limit frame 3, a threaded connecting block 5 threadedly connected to the outer wall of the upper section of the threaded push rod 6, a connecting block 7 fixedly connected to the top of the threaded push rod 6, a sliding pin 8 slidably connected to the inner wall of the limit hole opened in the connecting block 7, a connecting ring 11 rotatably connected to the bottom of the threaded push rod 6, a traction seat 10 fixedly connected to the bottom of the connecting ring 11, and sliding sleeves 13 fixedly connected to both ends of the traction seat 10. A rotating roller 9 is fixedly connected to one end of the back of the traction seat 10, and a pressure roller 12 is rotatably connected to one end of the front of the traction seat 10. A bending limiting plate 16 is fixedly connected to the top of the receiving base 1. A rotating roller 17 is provided on the inner wall of the limiting slots that are equidistantly opened on the top of the bending limiting plate 16. A pressure rotating roller 18 is fixedly connected to the outer wall of the rotating roller 17. A limiting slide is opened in the limiting frame 3. The rotating roller 9 is slidably connected to the inner wall of the limiting slide. The traction seat 10 is slidably connected to the front of the limiting frame 3. A sliding sleeve 13 is slidably connected to the outer wall of the fixed slide rod 14. A limiting spring 15 is provided on the upper and lower sections of the sliding sleeve 13. The bending limiting plate 16 is symmetrically arranged on the front and rear sections of the top of the receiving base 1. The bottom of the fixed slide rod 14 is fixedly connected to the inner wall of the receiving base 1. The pressure roller 12 extends to the top of the symmetrically arranged bending limiting plate 16.
[0023] Working principle: The device uses the receiving base 1 as the basic support structure, and the pressure bending limit plate 16 symmetrically arranged on its top forms the main working area for oil pipe bending; the fixed base frame 2 is fixed to the rear section of the receiving base 1, and extends upward to support the limit frame 3 and the top frame 4, forming the installation frame of the upper transmission structure; the fixed sliding rod 14 is vertically fixed on the inner wall of the top frame 4, and its bottom is connected to the inner wall of the receiving base 1, forming a straight guide rail that runs through the top and bottom, providing support for the vertical sliding of the traction seat 10;
[0024] The upper part of the threaded push rod 6, which is connected to the inner wall of the top of the limit frame 3 by a threaded connection, is threadedly engaged with the threaded connecting block 5. When external power, such as a manual knob or a drive motor, is applied to the connecting block 7, the threaded push rod 6 is driven to rotate. Since the threaded connecting block 5 is fixed to the top frame 4, the threaded push rod 6 generates vertical linear motion when rotating, and transmits the power to the traction seat 10 through the connecting ring 11 at the bottom.
[0025] The sliding sleeves 13 at both ends of the traction seat 10 are sleeved on the outer wall of the fixed slide rod 14, and the limiting springs 15 set in the upper and lower sections of the sliding sleeves 13 provide elastic buffering. When the traction seat 10 moves up and down with the threaded push rod 6, the sliding sleeves 13 slide on the fixed slide rod 14, and the limiting springs 15 can absorb the impact force generated during bending to avoid damage to the oil pipe caused by rigid collision. At the same time, the rotating roller 9 is slidably connected in the limiting slide opening opened in the limiting frame 3, and the front of the traction seat 10 slides against the front of the limiting frame 3 to ensure that the traction seat 10 remains stable during vertical movement and avoids deviation.
[0026] The rotating roller 9 fixed on the back of the traction seat 10 is embedded in the limiting slide of the limiting frame 3. When the traction seat 10 moves, it can roll in the slide to reduce frictional resistance. The pressure roller 12 rotatably connected on the front extends to the top of the symmetrical bending limiting plate 16. When the traction seat 10 moves downward, the pressure roller 12 applies downward pressure to the oil pipe placed on the bending limiting plate 16.
[0027] The rotating rollers 17 equidistantly arranged on the top of the bending limiting plate 16 and the pressure rollers 18 on the outer wall form a support and guide structure for the oil pipe; the oil pipe is placed between the two bending limiting plates 16, and its bottom surface is supported by the pressure rollers 18. When the pressure roller 12 presses down, the oil pipe undergoes bending deformation between the pressure roller 12 and the pressure roller 18; the symmetrical arrangement of the bending limiting plates 16 ensures that the oil pipe is subjected to uniform force on both sides, avoiding deviation or twisting during bending;
[0028] By adjusting the number of rotations of the threaded push rod 6, the descent height of the traction seat 10 can be precisely controlled, thereby adjusting the pressure and bending angle of the pressure roller 12 on the oil pipe; the elastic deformation characteristics of the limit spring 15 can automatically adapt to pressure changes according to the material and diameter of the oil pipe, avoiding overload that could damage the oil pipe.
[0029] The sliding pin 8, which is slidably connected in the limiting hole of the connecting block 7, can be inserted and fixed after the threaded push rod 6 is adjusted to the target position, to prevent the threaded push rod 6 from rotating due to vibration and other factors during the processing, and to ensure stable pressure during the bending process;
[0030] The sliding sleeve 13 is located at the top of the fixed slide rod 14, the limiting spring 15 is in a naturally extended state, the pressure roller 12 and the pressure roller 18 at the top of the bending limiting plate 16 maintain an initial distance, the oil pipe is placed on the pressure roller 18, and both ends are initially fixed by the external positioning device; the drive threaded push rod 6 rotates and descends, the traction seat 10 moves down through the connecting ring 11, the sliding sleeve 13 compresses the lower limiting spring 15, the pressure roller 12 contacts the oil pipe and gradually applies pressure, the oil pipe bends under the clamping of the pressure roller 12 and the pressure roller 18, the rotating roller 9 slides down synchronously in the limiting slide, keeping the traction seat 10 moving smoothly; after bending is completed, the threaded push rod 6 is rotated in the opposite direction, the traction seat 10 quickly resets under the elastic force of the upper limiting spring 15, the sliding pin 8 is re-inserted into the limiting hole of the connecting block 7, locking the position of the threaded push rod 6, waiting for the next processing.
[0031] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A bending device for tubing processing, comprising a receiving base (1), characterized in that: The receiving base (1) is fixedly connected to a fixed base frame (2) at its rear end. A limit frame (3) is fixedly connected to the top of the fixed base frame (2). A top frame (4) is fixedly connected to the top of the limit frame (3). A fixed slide rod (14) is fixedly connected to the inner wall of the top frame (4). Limit springs (15) are sleeved on the outer walls of the upper and lower sections of the fixed slide rod (14). A threaded push rod (6) is threadedly connected to the inner wall of the top of the limit frame (3). A threaded connecting block (5) is threadedly connected to the outer wall of the upper section of the threaded push rod (6). A connecting block (7) is fixedly connected to the top of the threaded push rod (6). The inner wall of the limit hole of the connecting block (7) is slidably connected. There is a sliding pin (8), the bottom of the threaded push rod (6) is rotatably connected to a connecting ring (11), the bottom of the connecting ring (11) is fixedly connected to a traction seat (10), the two ends of the traction seat (10) are fixedly connected to sliding sleeves (13), one end of the back of the traction seat (10) is fixedly connected to a rotating roller (9), one end of the front of the traction seat (10) is rotatably connected to a pressure roller (12), the top of the receiving base (1) is fixedly connected to a bending limiting plate (16), the inner wall of the limiting slots equidistantly opened on the top of the bending limiting plate (16) is provided with a rotating roller (17), and the outer wall of the rotating roller (17) is fixedly connected to a pressure rotating roller (18).
2. The bending device for tubing processing according to claim 1, characterized in that: The limiting frame (3) has a limiting slide opening, the rotating roller (9) is slidably connected to the inner wall of the limiting slide opening, and the traction seat (10) is slidably connected to the front of the limiting frame (3).
3. The bending device for tubing processing according to claim 1, characterized in that: The sliding sleeve (13) is slidably connected to the outer wall of the fixed slide rod (14).
4. The tubing bending apparatus of claim 1, wherein: The limiting spring (15) is located on the upper and lower sections of the sliding sleeve (13).
5. The tubing bending apparatus of claim 1, wherein: The bending limiting plate (16) is symmetrically arranged on the front and rear sections of the top of the receiving base (1).
6. The tubing bending apparatus of claim 1, wherein: The bottom of the fixed slide bar (14) is fixedly connected to the inner wall of the receiving base (1).
7. The tubing bending apparatus of claim 1, wherein: The pressure roller (12) extends from the top of the symmetrically arranged bending limiting plate (16).