Grooving machine suitable for different pipe diameters

Abstract

The application relates to the technical field of groove cutting machines, and discloses a groove cutting machine suitable for pipes with different diameters, which comprises a conveying mechanism used for conveying a pipe to be machined in an axial direction; a centering and adjusting mechanism arranged at the end of the conveying mechanism and used for receiving and correcting the axial position of the pipe; and a rotary milling unit arranged laterally to the centering and adjusting mechanism and used for milling a groove on the end face of the corrected pipe; wherein the centering and adjusting mechanism comprises a pipe diameter self-adapting holder used for clamping the pipe and a lifting execution assembly used for driving the holder to lift, so that the axial line of the pipe coincides with the center line of the main shaft of the rotary milling unit. The application has the effect of facilitating groove cutting of pipes with different diameters.

Description

Technical Field

[0001] This application relates to the field of beveling machine technology, and in particular to a beveling machine adaptable to different pipe diameters. Background Technology

[0002] A beveling machine is a widely used piece of equipment in the metal processing field. It is mainly used to cut bevels (i.e., bevels) at specific angles on the edges of metal sheets or pipes, preparing them for subsequent welding, splicing, and other processes. However, traditional equipment and processes face significant challenges when beveling the ends of large-diameter metal pipes.

[0003] First, large-diameter pipes typically have significant mass and volume, making them extremely difficult to move and position. Currently, the common practice is to rely on gantry cranes and other lifting equipment for manual lifting and rough positioning. This not only poses safety hazards but also makes it difficult to quickly and accurately transport the pipes to the designated processing position, resulting in high labor intensity for workers and low production efficiency.

[0004] Secondly, existing beveling equipment has poor versatility. Different projects often require pipes of different diameters, while the clamping mechanisms of traditional equipment are typically designed for specific pipe diameters. When the dimensions of the workpiece change, the machine must be stopped and the corresponding clamping mold replaced. Subsequently, the clamping center must be tediously readjusted and calibrated to ensure that the pipe axis is aligned with the tool spindle. This process is time-consuming and labor-intensive, severely restricting production pace, increasing equipment debugging time and labor costs, and making it difficult to meet the needs of processing multiple specifications and small batches of pipes.

[0005] Therefore, there is an urgent need for a high-efficiency beveling equipment that can automatically transport, accurately position, and quickly adapt to different pipe diameters to solve the above-mentioned bottleneck problems. Utility Model Content

[0006] To facilitate beveling of pipes of different diameters, this application provides a beveling machine adaptable to different pipe diameters.

[0007] The beveling machine adapted to different pipe diameters provided in this application adopts the following technical solution: A beveling machine adaptable to different pipe diameters, comprising: A conveying mechanism is used to transport the tube to be processed along the axial direction; A centering adjustment mechanism is located at the end of the conveying mechanism and is used to receive and correct the axial position of the tube. A rotary milling unit is located to the side of the centering adjustment mechanism and is used to mill a bevel on the corrected tube end face. The centering adjustment mechanism includes a pipe diameter adaptive clamp for holding the pipe body and a lifting actuator for driving the clamp to rise and fall, so that the axis of the pipe body coincides with the spindle centerline of the rotary milling unit.

[0008] Optionally, the conveying mechanism includes: Fixed rack; Multiple V-shaped idlers are rotatably mounted on the frame along the conveying direction, with the axis of each V-shaped idler perpendicular to the conveying direction; A synchronous transmission assembly connects each of the V-shaped rollers and is used to drive them to rotate synchronously; A drive motor is connected to the synchronous transmission assembly.

[0009] Optionally, the V-shaped roller is integrally formed from two coaxially joined frustums to form a V-shaped groove for accommodating and initially positioning the tube. The synchronous transmission assembly includes gears fixed to both ends of each idler roller and chains connecting adjacent gears.

[0010] Optionally, the centering adjustment mechanism further includes a fixing frame, which has a vertical plate with a through hole for the pipe to pass through. The lifting and lowering execution component includes: Inverted L-shaped lifting frame; Two vertically arranged threaded rods, the upper end of which is threadedly engaged with the mounting seat fixed to the top of the fixed frame, and the lower end of which is threadedly engaged with the lifting frame; The first drive motor is used to drive the threaded rod to rotate, so as to drive the lifting frame and the lifting ring fixed thereon to move in the vertical direction.

[0011] Optionally, the upright plate of the fixing frame is provided with multiple vertical guide grooves along the circumferential direction; The lifting ring is fixed with a guide block that slides with the guide groove, and each guide block has a stop block at its end that fits against the back of the upright plate. The vertical plate and the lifting ring are also provided with a vertical guide rail and a slider that cooperate with each other.

[0012] Optionally, the pipe diameter adaptive clamp includes: Multiple clamping rods are slidably mounted on the lifting ring in a radial direction; The rotating ring is rotatably fitted onto the bearing ring fixed to the lifting ring through an annular groove; Each of the clamping rods is engaged with a curved limiting groove formed on the rotating ring by a limiting pin provided at one end; When the rotating ring rotates, it drives all the clamping rods to move radially synchronously through the cooperation of the limiting groove and the limiting pin.

[0013] Optionally, the clamping rod is provided with a pair of clamping bars at one end near the tube body for forming multi-line contact with the tube wall; The curved limiting groove is an arc-shaped groove, and the limiting pin is a self-rotating cylindrical pin.

[0014] Optionally, the lifting frame is equipped with a pair of telescopic actuators, the push rod end of which is hinged to the rotating ring for driving the rotating ring to rotate around the axis.

[0015] Optionally, the rotary milling unit includes: The slide block is mounted on the base via a third drive cylinder and can move horizontally. A rotating disk is rotatably mounted on the slide block via a second drive motor, with its axis set horizontally; The milling cutter is mounted on the rotary table with an adjustable radius via bolts.

[0016] Optionally, the frame of the conveying mechanism is provided with a protective cover for shielding the gears and chain; The center of the through hole on the fixing frame of the centering adjustment mechanism is coaxial with the center line of the spindle of the rotary milling unit.

[0017] In summary, this application includes at least one of the following beneficial technical effects: 1. The automatic conveying and initial positioning of the tube body is achieved by the synchronous transmission V-shaped roller of the conveying mechanism. Combined with the dual thread drive of the lifting actuator in the centering adjustment mechanism and the synergistic effect of the tube diameter adaptive clamp, the tube body axis is automatically and precisely adjusted to coincide with the milling spindle. This greatly reduces the time and error of manual hoisting, measurement and adjustment, and lays a solid foundation for subsequent high-quality beveling. 2. The cooperation of the guide block and guide groove, slider and guide rail, and stop in the lifting actuator effectively suppresses the movement and swaying of the lifting ring in various directions under complex stress conditions. Combined with the multi-rod synchronous clamping mechanism driven by the curved groove on the clamper and the clamping bars that contact the pipe wall on multiple lines, this ensures that the pipe body is in a state of extremely high static and dynamic stability during clamping and milling, thereby directly guaranteeing the forming quality, consistency, and machining accuracy of the bevel end face. 3. The V-shaped idler structure of the conveying mechanism has a natural adaptability to pipe diameter. The clamping device of the centering adjustment mechanism can steplessly adjust the clamping diameter by rotating the rotating ring, and the installation radius of the milling cutter of the rotary milling unit can also be adjusted. This allows the same equipment to adapt to beveling of pipes with different diameters and wall thicknesses within a certain range without changing the core components, reducing equipment investment and tooling change time, and improving the flexibility of the production line and overall economic benefits. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0019] Figure 2This is a schematic diagram illustrating the relative positions of the upright plate and the rotating ring in an embodiment of this application.

[0020] Figure 3 This is a schematic diagram illustrating the relative positions of the lifting frame and the threaded rod in an embodiment of this application.

[0021] Figure 4 This is a schematic diagram illustrating the upper limit groove structure of the rotating ring in the embodiments of this application.

[0022] Figure 5 This is a schematic diagram illustrating the rotary milling unit structure in the embodiments of this application.

[0023] Explanation of reference numerals in the attached figures: 1. Conveying mechanism; 11. Frame; 12. Idler roller; 2. Centering adjustment mechanism; 21. Fixed frame; 211. Vertical plate; 212. Mounting ring; 213. Mounting base; 214. First drive motor; 215. Guide rail; 22. Clamp; 221. Clamping rod; 2211. Limit pin; 222. Rotating ring; 2221. Limit groove; 223. Telescopic actuator; 23. Lifting actuator assembly; 231. Lifting frame; 232. Lifting ring; 2321. Slide groove; 2322. Bearing ring; 233. Threaded rod; 234. Guide block; 235. Stop block; 236. Slider; 3. Rotary milling unit; 31. Rotary disk; 311. Slide; 312. Second drive motor; 32. Milling cutter. Detailed Implementation

[0024] The following is in conjunction with the appendix Figures 1-5 This application will be described in further detail.

[0025] This application discloses a beveling machine adapted to different pipe diameters.

[0026] A beveling machine adaptable to different pipe diameters includes a conveying mechanism 1, a centering adjustment mechanism 2, and a rotary milling unit 3. The conveying mechanism 1 is used to convey the pipe to be processed along the axial direction; the centering adjustment mechanism 2 is used to correct the axis of the pipe so that it coincides with the spindle center of the rotary milling unit 3; the rotary milling unit 3 is used to mill and bevel the end face of the pipe.

[0027] During beveling, the pipe body is first hoisted onto the conveying mechanism 1, with the end to be beveled facing the rotary milling unit 3. The conveying mechanism 1 transports the pipe body to the centering adjustment mechanism 2, which adjusts the position of the pipe body to achieve axial alignment. Subsequently, the rotary milling unit 3 feeds radially to bevele the end face of the pipe body. This device significantly improves the convenience and quality of beveling.

[0028] The conveying mechanism 1 includes a frame 11 and a set of V-shaped idlers 12. The frame 11 is fixed to the foundation, and multiple V-shaped idlers 12 are arranged along the conveying direction and rotatably mounted on the frame 11. The axis of each idler 12 is horizontal and perpendicular to the conveying direction. Operators use a crane to place the pipe onto the V-shaped idlers 12, which provide support and ensure stability. During conveying, the idlers 12 are driven to rotate to reduce frictional resistance and facilitate easy transfer of the pipe.

[0029] Each V-shaped idler roller 12 has a gear fixedly connected to both ends, and the gear is coaxial with the idler roller 12. Adjacent gears along the conveying direction are connected by a chain to achieve synchronous rotation of multiple rollers. A chain drive motor is fixedly installed on the frame 11. The motor drives the chain to move, thereby causing all idler rollers 12 to rotate synchronously and push the tube to move. By controlling the start and stop of the motor, the conveying position of the tube can be precisely controlled.

[0030] The V-shaped idler roller 12 consists of two coaxial truncated cones joined at their small ends, forming an overall V-shaped groove structure with a concave center. The gear is located on the outer side of the large end of the truncated cone. In this embodiment, the two truncated cones are integrally formed. The V-shaped groove can provide preliminary radial positioning of the tube body, ensuring that the tube body axis is parallel to the conveying direction in the vertical plane. The frame 11 is also equipped with a protective cover to shield the gear and chain, preventing interference from foreign objects or accidental contact by personnel, thus improving safety.

[0031] The centering adjustment mechanism 2 includes a fixed frame 21, a pipe diameter adaptive clamp 22, and a lifting actuator 23. The fixed frame 21 is located at the end of the conveying mechanism 1 and is fixed to the foundation. A through hole is provided on the fixed frame 21, through which the pipe body on the conveying mechanism 1 can pass to allow the rotary milling unit 3 to perform end face machining.

[0032] The mounting bracket 21 includes a vertical plate 211 and a mounting ring 212 fixed to the front side of the plate 211 (near the conveying mechanism 1). The center of the through hole in the plate 211 coincides with the axis of the mounting ring 212. The pipe diameter adaptive clamp 22 and the lifting actuator 23 are both mounted on the mounting bracket 21. The clamp 22 is used to hold the pipe body and make its axis parallel to the milling spindle in the vertical plane; the lifting actuator 23 adjusts the vertical height of the pipe body through the clamp 22 so that the axis of the pipe body is precisely aligned with the center line of the milling spindle before machining.

[0033] After the beveling is completed, the lifting actuator 23 uses the clamp 22 to place the tube back onto the V-shaped roller 12, and the conveying mechanism 1 runs in reverse to send the tube out of the processing area.

[0034] The lifting actuator 23 includes an inverted L-shaped lifting frame 231 and a lifting ring 232. The lifting frame 231 and the mounting ring 212 are connected by two vertically parallel threaded rods 233. A mounting seat 213 is fixed to the top of the outer wall of the mounting ring 212. The upper end of the threaded rod 233 passes through the mounting ring 212 and the mounting seat 213 and is threadedly engaged with the mounting seat 213; the lower end of the threaded rod 233 passes through the lifting frame 231 and is threadedly engaged with the lifting frame 231. A first drive motor 214 is also installed on the top of the mounting ring 212 and is connected to the threaded rod 233 for transmission.

[0035] The motor drives the threaded rod 233 to rotate. Because the threaded rod 233 and the mounting base 213 have a threaded pair, they experience relative vertical displacement during rotation. Simultaneously, the threaded rod 233 and the lifting frame 231 also have a threaded pair, which also results in relative vertical displacement during rotation. The combined effect of these two threaded pairs doubles the height adjustment of the lifting frame 231, improving lifting efficiency and reducing the required length of the threaded rod 233, thus saving materials.

[0036] The lifting ring 232 is fixed to the vertical wall plate of the lifting frame 231, and its axis is parallel to the center line of the main shaft of the rotary milling unit 3 in the vertical plane. The vertical position of the lifting ring 232 can be changed by adjusting the height of the lifting frame 231. Multiple vertical guide grooves are provided on the upright plate 211 of the fixed frame 21 along the circumference, all of which pass through the upright plate 211.

[0037] A number of guide blocks 234 are fixed to the side of the lifting ring 232 near the upright plate 211, corresponding one-to-one with the guide groove and slidingly engaged. This structure can limit the circumferential swing of the lifting ring 232 during movement. Each guide block 234 is also fixed to a stop block 235 at its end, and the stop block 235 is in contact with the back of the upright plate 211.

[0038] Several vertical guide rails 215 are fixed to the side of the upright plate 211 of the fixed frame 21 near the lifting ring 232. A slider 236 is provided at a corresponding position on the lifting ring 232, forming a sliding pair with the guide rails 215. Through the synergistic effect of the slider 236-guide rail 215 pair and the guide block 234-guide groove pair, the axial movement and circumferential sway of the lifting ring 232 during movement are further suppressed. The stop block 235, in contact with the upright plate 211, restricts the axial movement of the lifting ring 232. Multiple limiting mechanisms ensure the high stability of the lifting ring 232 during operation, thereby guaranteeing the axial stability of the pipe it supports, laying the foundation for consistent bevel quality.

[0039] The pipe diameter adaptive clamp 22 includes multiple clamping rods 221 and a rotating ring 222. The clamping rods 221 are located on the side of the lifting ring 232 facing away from the vertical plate 211, and are evenly distributed around the circumference of the lifting ring 232 (eight rods in this embodiment). The arrangement direction of the clamping rods 221 is consistent with the radial direction of the lifting ring 232, and they can slide in a radial engagement with the lifting ring 232.

[0040] The lifting ring 232 has a radial groove 2321 on its side facing the clamping rod 221. The clamping rod 221 is placed in the groove 2321 and can slide. The groove 2321 guides and supports the clamping rod 221, ensuring the correct direction of movement and enhancing the bending stiffness of the clamping rod 221 under load.

[0041] The clamping rod 221 has a pair of clamping bars at one end near the center, which can form multi-line contact with the outer wall of the tube to enhance clamping stability.

[0042] A bearing ring 2322 is coaxially fixed to the side of the lifting ring 232 facing the clamping rod 221 by bolts. A coaxial annular groove is formed on the side of the bearing ring 232 facing the lifting ring 232. A rotating ring 222 is fitted onto the bearing ring 2322 through this annular groove and can rotate around its axis. The groove wall serves to clamp and radially position the rotating ring 222. The end face of the clamping rod 221 is flush with the side of the lifting ring 232, and a limiting pin 2211 is fixed to its end facing the rotating ring 222. The axis of the limiting pin 2211 is parallel to the axis of the lifting ring 232.

[0043] The rotating ring 222 has multiple curved limiting grooves 2221 circumferentially formed on the side near the lifting ring 232, corresponding one-to-one with the limiting pins 2211 on each clamping rod 221. The limiting pins 2211 extend into the corresponding limiting grooves 2221 and can slide. The center lines of each limiting groove 2221 are in the same plane and do not intersect with the center of the rotating ring 222 (i.e., they are non-radial curved grooves). When the rotating ring 222 rotates around its axis, the groove walls of the limiting grooves 2221 push all the limiting pins 2211 to move synchronously, thereby causing all the clamping rods 221 to contract or open synchronously in the radial direction, realizing the clamping and releasing of the pipe body, and adapting to different pipe diameters.

[0044] To ensure smooth movement of the clamping rod 221, the limiting groove 2221 is designed to be arc-shaped, and the limiting pin 2211 is a cylindrical pin that can rotate around its own axis.

[0045] A pair of telescopic actuators 223 (cylinders in this embodiment) are fixedly mounted on the upper end of the lifting frame 231, and a rotating ring 222 is located between the two cylinders. The cylinder body is fixed to the lifting frame 231, and the end of the piston rod is hinged to the rotating ring 222. By controlling the synchronous extension and retraction of the cylinders and relying on the guidance of the bearing ring 2322, the rotating ring 222 can be driven to rotate precisely around its axis, thereby controlling the synchronous radial movement of all clamping rods 221.

[0046] The rotary milling unit 3 includes a rotary disk 31 and several milling cutters 32. The rotary disk 31 is mounted on a slide 311 with its axis horizontally positioned. The rotary disk 31 is driven to rotate around its own axis by a second drive motor 312. The slide 311 has a base at its bottom and can be pushed by a third drive cylinder to move along the axis of the rotary disk 31, thereby realizing the radial feed and retraction of the milling unit.

[0047] The milling cutter 32 is bolted to the rotary disk 31, and its mounting position is adjustable. By changing the fixed radius of the milling cutter 32 on the rotary disk 31, the diameter of its milling trajectory can be adjusted to meet the beveling requirements of pipes with different diameters.

[0048] The implementation principle of a beveling machine adaptable to different pipe diameters in this application embodiment is as follows: First, the pipe body is suspended on the V-shaped idler roller 12 of the conveying mechanism 1. The motor drives all the idler rollers 12 to rotate synchronously via chains, automatically conveying the pipe body to the centering station. Subsequently, the lifting actuator 23 of the centering adjustment mechanism 2 drives the threaded rod 233 via a motor to precisely adjust the height of the clamp 22. At the same time, multiple clamping rods 221 in the clamp 22 retract synchronously under the drive of the rotating ring 222, clamping the pipe body tightly and making its central axis precisely coincide with the center line of the milling spindle. Finally, the rotary milling unit 3 is pushed towards the pipe end by a cylinder. The high-speed rotating milling cutter 32 performs beveling on the precisely positioned end face of the pipe body. After completion, all actuators are reset, and the pipe body is sent back to the idler roller 12 for transport, completing the fully automatic and high-precision processing operation.

[0049] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A beveling machine adaptable to different pipe diameters, characterized in that: include: A conveying mechanism is used to transport the tube to be processed along the axial direction; A centering adjustment mechanism is located at the end of the conveying mechanism and is used to receive and correct the axial position of the tube. A rotary milling unit is located to the side of the centering adjustment mechanism and is used to mill a bevel on the corrected tube end face. The centering adjustment mechanism includes a pipe diameter adaptive clamp for holding the pipe body and a lifting actuator for driving the clamp to rise and fall, so that the axis of the pipe body coincides with the spindle centerline of the rotary milling unit.

2. A beveling machine adaptable to different pipe diameters according to claim 1, characterized in that: The conveying mechanism includes: Fixed rack; Multiple V-shaped idlers are rotatably mounted on the frame along the conveying direction, with the axis of each V-shaped idler perpendicular to the conveying direction; A synchronous transmission assembly connects each of the V-shaped rollers and is used to drive them to rotate synchronously; A drive motor is connected to the synchronous transmission assembly.

3. A beveling machine adaptable to different pipe diameters according to claim 2, characterized in that: The V-shaped roller is integrally formed by two coaxially joined frustums, forming a V-shaped groove for accommodating and initially positioning the tube. The synchronous transmission assembly includes gears fixed to both ends of each idler roller and chains connecting adjacent gears.

4. A beveling machine adaptable to different pipe diameters according to claim 1, characterized in that: The centering adjustment mechanism also includes a fixing frame, which has a vertical plate with a through hole for the pipe to pass through. The lifting and lowering execution component includes: Inverted L-shaped lifting frame; Two vertically arranged threaded rods, the upper end of which is threadedly engaged with the mounting seat fixed to the top of the fixed frame, and the lower end of which is threadedly engaged with the lifting frame; The first drive motor is used to drive the threaded rod to rotate, so as to drive the lifting frame and the lifting ring fixed thereon to move in the vertical direction.

5. A beveling machine adaptable to different pipe diameters according to claim 4, characterized in that: The upright plate of the fixing frame is provided with multiple vertical guide grooves along the circumference; The lifting ring is fixed with a guide block that slides with the guide groove, and each guide block has a stop block at its end that fits against the back of the upright plate. The vertical plate and the lifting ring are also provided with a vertical guide rail and a slider that cooperate with each other.

6. A beveling machine adaptable to different pipe diameters according to claim 4, characterized in that: The pipe diameter adaptive clamp includes: Multiple clamping rods are slidably mounted on the lifting ring in a radial direction; The rotating ring is rotatably fitted onto the bearing ring fixed to the lifting ring through an annular groove; Each of the clamping rods is engaged with a curved limiting groove formed on the rotating ring by a limiting pin provided at one end; When the rotating ring rotates, it drives all the clamping rods to move radially synchronously through the cooperation of the limiting groove and the limiting pin.

7. A beveling machine adaptable to different pipe diameters according to claim 6, characterized in that: The clamping rod is provided with a pair of clamping bars at one end near the tube body for forming multi-line contact with the tube wall; The curved limiting groove is an arc-shaped groove, and the limiting pin is a self-rotating cylindrical pin.

8. A beveling machine adaptable to different pipe diameters according to claim 6, characterized in that: The lifting frame is equipped with a pair of telescopic actuators, the push rod end of which is hinged to the rotating ring to drive the rotating ring to rotate around the axis.

9. A beveling machine adaptable to different pipe diameters according to claim 1, characterized in that: The rotary milling unit includes: The slide block is mounted on the base via a third drive cylinder and can move horizontally. A rotating disk is rotatably mounted on the slide block via a second drive motor, with its axis set horizontally; The milling cutter is mounted on the rotary table with an adjustable radius via bolts.

10. A beveling machine adaptable to different pipe diameters according to claim 2, characterized in that: The frame of the conveying mechanism is equipped with a protective cover to shield the gears and chain; The center of the through hole on the fixing frame of the centering adjustment mechanism is coaxial with the center line of the spindle of the rotary milling unit.

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