High-precision automatic pipeline beveling equipment

Abstract

The invention discloses high-precision automatic pipeline beveling equipment, and belongs to the technical field of beveling. Comprising an equipment body, one end of the equipment body is rotationally connected with a rotating ring, and at least three double-head air cylinders used for being connected with pipelines are installed on the equipment body in the circumferential direction. The adjusting unit is arranged to control the two cutters to synchronously move in the radial direction, so that the moving distances of the cutters in the radial direction are kept consistent, and meanwhile, when the adjusting unit moves front and back, the angles of the two cutters can be driven to be synchronously adjusted, so that the precision of the two cutters for beveling a pipeline is improved, and the production efficiency is improved. The two cutters are comprehensively synchronized, and the problem that due to the factors such as limitation of mechanical structure design, errors of a transmission system or manual adjustment deviation, the two cutters often have tiny angle difference is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of beveling, in particular to a high-precision automatic beveling equipment for pipes. BACKGROUND

[0002] In the field of pipe processing, especially in the oil, gas, chemical and power industries, pipe ends are usually beveled before connection to ensure the quality of subsequent welding. The precision of beveling directly affects the strength, sealing and safety and reliability of the overall structure of the welded joint. Currently, common pipe beveling equipment usually adopts a mode of arranging two cutting tools symmetrically around the pipe opening, and adjusting the inclination angle of the tools to achieve the required bevel angle.

[0003] However, in actual application, the existing equipment generally has a key technical problem: the two symmetrically arranged tools are difficult to achieve complete synchronization when adjusting the angle. Due to the limitations of mechanical structure design, transmission system errors or manual adjustment deviations, there is often a small angle difference between the two tools. This asynchronous phenomenon can cause the following problems: Inconsistent bevel angle: the left and right bevel surfaces are not symmetrical, affecting the consistency of the welding gap and thus reducing the quality of the weld; Decline in the quality of the machined surface: the asynchronization of the tools can easily cause unbalanced cutting force, leading to vibration or local overcut / undercut and affecting the surface finish of the bevel; Poor repeatability: each time the pipe diameter or bevel parameters are changed, manual calibration is required, which is tedious and difficult to ensure consistency; Limited adaptability of the equipment: for pipes of different diameters or materials, there is no universal solution that can automatically and synchronously adjust the angle of the two tools.

[0004] Therefore, it is necessary to provide a high-precision automatic beveling equipment for pipes to solve the above problems. SUMMARY

[0005] Based on the above problems in the prior art, the purpose of the present application is to provide a high-precision automatic beveling equipment for pipes to solve the problems raised in the background art.

[0006] The technical solution adopted by the present application to solve its technical problems is: a high-precision automatic beveling equipment for pipes, comprising a device body, one end of the device body being rotatably connected with a rotating ring, and not less than three double-head air cylinders for connecting pipes being installed on the device body in a circumferential direction; A tool setting unit for beveling pipes, an adjusting unit and a second air cylinder are provided on the outer end face of the rotating ring, the tool setting unit has two and is symmetrically arranged, and the adjusting unit and the second air cylinder are symmetrically arranged; The output end of the second cylinder has a retractable second piston rod, one end of which is fixedly connected to an arc-shaped steel pipe, and the end of the arc-shaped steel pipe away from the second cylinder is fixedly connected to an adjustment unit. Each of the blade-setting units has a cutting blade, and the adjustment unit can simultaneously drive the two cutting blades to move closer and further apart in the radial direction. While the adjustment unit moves back and forth, it can also drive the two cutting blades to rotate synchronously.

[0007] Furthermore, the blade setting unit has a slider and a limiting cover, the cutter is rotatably connected to the top of the slider, and the limiting cover is fixedly connected to the inner side of the slider; The adjustment unit has a left connecting plate and a right connecting plate. The left connecting plate is slidably installed inside the limiting cover of a tool setting unit, and the right connecting plate is slidably installed inside the limiting cover of another tool setting unit.

[0008] Furthermore, the bottom of the cutter extends downward with an extension post, on which a rotating gear is fixedly connected. A left rack is installed on the portion of the left connecting plate located inside the limiting cover, and a right rack is installed on the portion of the right connecting plate located inside the limiting cover. The left rack meshes with the rotating gear, and the right rack meshes with a transmission gear. The transmission gear meshes with another rotating gear.

[0009] Furthermore, the adjustment unit has a base plate, a rotating plate, a left connecting rod, and a right connecting rod. The base plate is fixedly connected to the arc-shaped steel pipe. A rotating shaft is fixedly connected to the center of the rotating plate. The rotating shaft is rotatably connected to the base plate. One end of the left connecting rod is hinged to the upper end of the rotating plate, and the other end is hinged to the left connecting plate. One end of the right connecting rod is hinged to the lower end of the rotating plate, and the other end is hinged to the right connecting plate.

[0010] Furthermore, the adjustment unit also has a secondary track and a first cylinder. The secondary track is fixedly connected to the top of the base plate and distributed on both sides of the rotating plate. The left connecting plate and the right connecting plate are slidably installed on the corresponding secondary track. The output end of the first cylinder has a first piston rod, and the end of the first piston rod is fixedly connected to the right connecting plate.

[0011] Furthermore, the adjustment unit also has a main track, which is fixedly installed at the end of the rotating ring and located between the two tool setting units, and the base plate is slidably installed on the main track.

[0012] Furthermore, the tool setting unit also has a fixed plate fixedly connected to the rotating ring, and two limiting blocks are fixedly connected to the top of the fixed plate, with the slider slidably installed between the limiting blocks.

[0013] Furthermore, a motor is fixedly connected to the outer peripheral wall of the device body, a transmission gear is fixedly connected to the output end of the motor, and an external gear ring that meshes with the transmission gear is provided inside the rotating ring.

[0014] Furthermore, the dual-head cylinder has an outer telescopic rod and an inner telescopic rod. The outer telescopic rod is located on the outside of the equipment body, and the inner telescopic rod is located on the inside of the equipment body. Anti-slip pads are fixedly connected to the ends of both the outer and inner telescopic rods.

[0015] The beneficial effects of this invention are as follows: The high-precision automatic pipe beveling device provided by this invention can control two cutters to move synchronously in the radial direction by setting an adjustment unit, so that the movement distance of the cutters in the radial direction is consistent. At the same time, when the adjustment unit moves back and forth, it can drive the angle of the two cutters to adjust synchronously, thereby improving the accuracy of the pipe beveling by the two cutters and achieving full synchronization of the two cutters. This avoids the problem that there are often slight angle differences between the two cutters due to the limitations of mechanical structure design, transmission system errors, or manual adjustment deviations. The device is equipped with a double-headed cylinder, which can be fixed to the outer wall of small-diameter pipes and the inner wall of large-diameter pipes. This allows the device to bevel pipes of various diameters. In addition, anti-slip pads are set on the telescopic rods of the double-headed cylinders, which increases the friction between the device and the pipe, so that the device can be installed on the pipe more stably. By symmetrically arranging the second cylinder and the adjustment unit, the device ensures more even force distribution during the rotation of the rotating ring, thereby improving the stability of the rotating ring.

[0016] In addition to the objectives, features, and advantages described above, the present invention has other objectives, features, and advantages. The invention will now be described in further detail with reference to the figures. Attached Figure Description

[0017] The accompanying drawings, which form part of this specification, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings: Figure 1 This is an overall schematic diagram of the present invention; Figure 2 This is a top view of the entire invention; Figure 3 This is a schematic diagram of the tool setting unit of the present invention; Figure 4 This is a schematic cross-sectional view of the tool setting unit of the present invention; Figure 5 This is a schematic diagram of the adjustment unit of the present invention; Figure 6 This is a schematic diagram of the device body of the present invention; Figure 7 This is a schematic diagram of the cutter adjustment of the present invention; Figure 8 This is a schematic diagram of the large-diameter pipe processing of the present invention; Figure 9 This is a schematic diagram of the cross-section of the pipe bevel of the present invention; The following are the labeling elements in the figure: 1. Equipment body; 11. Rotating ring; 2. Double-headed cylinder; 21. Outer telescopic rod; 22. Inner telescopic rod; 23. Anti-slip pad; 3. Motor; 4. Tool setting unit; 41. Fixing plate; 42. Limiting block; 43. Sliding block; 44. Cutting blade; 441. Extension column; 45. Limiting cover; 46. Rotating gear; 5. Adjustment unit; 51. Main track; 52. Base plate; 53. First cylinder; 531. First piston rod; 54. Secondary track; 55. Left connecting plate; 551. Left rack; 56. Right connecting plate; 561. Right rack; 57. Rotating plate; 571. Rotating shaft; 58. Left connecting rod; 59. Right connecting rod; 6. Second cylinder; 61. Second piston rod; 62. Arc-shaped steel pipe; 7. Pipeline. Detailed Implementation

[0018] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0019] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0020] like Figures 1-9 As shown, the present invention provides a technical solution: a high-precision automatic pipe beveling device, including a device body 1, a rotating ring 11 rotatably connected to one end of the device body 1, and not less than three double-headed cylinders 2 for connecting pipes 7 are installed on the device body 1 along the circumferential direction. The outer end face of the rotating ring 11 is provided with a tool setting unit 4, an adjustment unit 5 and a second cylinder 6 for beveling the pipe 7. There are two tool setting units 4 and they are symmetrically arranged. The adjustment unit 5 and the second cylinder 6 are symmetrically arranged. The output end of the second cylinder 6 has a retractable second piston rod 61. One end of the second piston rod 61 is fixedly connected to an arc-shaped steel pipe 62, and the end of the arc-shaped steel pipe 62 away from the second cylinder 6 is fixedly connected to the adjustment unit 5. Each tool setting unit 4 has a cutter 44. The adjustment unit 5 can simultaneously drive the two cutters 44 to move closer and further apart in the radial direction. While the adjustment unit 5 moves back and forth, it can drive the two cutters 44 to rotate synchronously.

[0021] The tool setting unit 4 has a slider 43 and a limiting cover 45. The cutter 44 is rotatably connected to the top of the slider 43, and the limiting cover 45 is fixedly connected to the inner side of the slider 43. The adjustment unit 5 has a left connecting plate 55 and a right connecting plate 56. The left connecting plate 55 is slidably installed inside the limiting cover 45 of one tool setting unit 4, and the right connecting plate 56 is slidably installed inside the limiting cover 45 of another tool setting unit 4.

[0022] The bottom of the cutter 44 extends downward with an extension post 441. A rotating gear 46 is fixedly connected to the extension post 441. A left rack 551 is installed on the part of the left connecting plate 55 located inside the limiting cover 45, and a right rack 561 is installed on the part of the right connecting plate 56 located inside the limiting cover 45. The left rack 551 meshes with the rotating gear 46, and the right rack 561 meshes with a transmission gear. The transmission gear meshes with another rotating gear 46.

[0023] The adjustment unit 5 has a base plate 52, a rotating plate 57, a left connecting rod 58 and a right connecting rod 59. The base plate 52 is fixedly connected to the arc-shaped steel pipe 62. The rotating plate 57 has a rotating shaft 571 fixedly connected to its center. The rotating shaft 571 is rotatably connected to the base plate 52. One end of the left connecting rod 58 is hinged to the upper end of the rotating plate 57 and the other end is hinged to the left connecting plate 55. One end of the right connecting rod 59 is hinged to the lower end of the rotating plate 57 and the other end is hinged to the right connecting plate 56.

[0024] The adjustment unit 5 also has a secondary rail 54 and a first cylinder 53. The secondary rail 54 is fixedly connected to the top of the base plate 52 and distributed on both sides of the rotating plate 57. The left connecting plate 55 and the right connecting plate 56 are slidably installed on the corresponding secondary rail 54. The output end of the first cylinder 53 has a first piston rod 531, and the end of the first piston rod 531 is fixedly connected to the right connecting plate 56.

[0025] The adjustment unit 5 also has a main track 51, which is fixedly installed at the end of the rotating ring 11 and located between the two tool setting units 4, and the base plate 52 is slidably installed on the main track 51.

[0026] The tool setting unit 4 also has a fixed plate 41 fixedly connected to the rotating ring 11. Two limit blocks 42 are fixedly connected to the top of the fixed plate 41, and the slider 43 is slidably installed between the limit blocks 42.

[0027] A motor 3 is fixedly connected to the outer peripheral wall of the equipment body 1. A transmission gear is fixedly connected to the output end of the motor 3. An external gear ring that meshes with the transmission gear is provided inside the rotating ring 11.

[0028] The double-headed cylinder 2 has an outer telescopic rod 21 and an inner telescopic rod 22. The outer telescopic rod 21 is located on the outside of the equipment body 1, and the inner telescopic rod 22 is located on the inside of the equipment body 1. Anti-slip pads 23 are fixedly connected to the ends of both the outer telescopic rod 21 and the inner telescopic rod 22.

[0029] In one embodiment, the device performs beveling.

[0030] Specifically, after fixing the small-diameter pipe 7, the equipment body 1 is fitted onto the outer wall of the pipe 7, so that the cutter 44 enters the working position, the double-headed cylinder 2 is activated, so that the inner telescopic rod 22 moves closer to the outer wall of the pipe 7. When the anti-slip pad 23 is attached to the outer peripheral wall of the pipe 7, the movement of the inner telescopic rod 22 is stopped, and at this time the equipment body 1 is fixed to the outer peripheral wall of the pipe 7. The first cylinder 53 is activated, and the first piston rod 531 of the first cylinder 53 extends inward, pushing the right connecting plate 56 to move inward. At this time, the right connecting plate 56 pushes the slider 43 in the limiting cover 45 to move in the same direction as the right connecting plate 56. Affected by the right connecting rod 59, the right connecting rod 59 drives the rotating plate 57 to rotate around the rotating shaft 571. The left connecting rod 58 moves in the opposite direction to the movement of the right connecting rod 59, which pushes the left connecting plate 55 to move inward. At this time, the left connecting plate 55 pushes the slider 43 in the limiting cover 45 to move in the same direction as the left connecting plate 55. The left connecting plate 55 and the right connecting plate 56 move closer to each other, so as to drive the two cutters 44 to move closer to the end of the pipe 7. When the cutters 44 reach the predetermined position, the movement of the first cylinder 53 stops. Start motor 3. The output end of motor 3 drives the transmission gear to rotate. The transmission gear meshes with the gear of rotating ring 11, causing the rotating ring 11 to rotate as a whole. At this time, the two cutters 44 bevel the pipe 7 from the outside to the inside. During the rotation, start the first cylinder 53 to push the slider 43 to make the cutter 44 move. After the beveling is completed, start the first cylinder 53 to move in the opposite direction of travel, so that the cutter 44 moves away from the pipe 7. Then stop motor 3, so that the rotating ring 11 stops rotating. After stabilizing the equipment body 1, start the double-headed cylinder 2 to retract the inner telescopic rod 22. After removing the restriction on the pipe 7, install the equipment body 1 on the other end of the pipe 7 and fix it. Beveling the pipe 7 in the same way as above.

[0031] In one implementation, the equipment can bevel pipes of different diameters.

[0032] Specifically, when beveling a pipe 7 with a diameter slightly larger than the original pipe 7, the pipe 7 is fixed with the inner telescopic rod 22, and then the second cylinder 6 is activated. The second cylinder 6 drives the second piston rod 61 to retract, and the arc-shaped steel pipe 62 drives the adjustment unit 5 to move closer to the center. The left rack 551 and the right rack 561 move within the limiting cover 45 in the corresponding blade unit 4. At this time, the left rack 551 meshes with the corresponding rotating gear 46, driving the extension column 441 to rotate, thereby causing the cutter 44 to produce a certain angle change. The right rack 561 meshes with the corresponding transmission gear, and the transmission gear outputs power to the corresponding rotating gear 46, causing the other cutter 44 to rotate as well. One cutter 44 rotates forward and the other cutter 44 rotates in reverse synchronously, so that the distance between the two cutters 44 and the center remains consistent. At the same time, the distance between the two cutters 44 gradually increases, which can accommodate the pipe 7 with a slightly larger diameter for beveling. The pipe 7 is beveled in the above manner. When beveling the large-diameter pipe 7, the outer telescopic rod 21 of the double-headed cylinder 2 is activated, so that the anti-slip pad 23 on the outer telescopic rod 21 abuts against the inner wall of the pipe 7. The second cylinder 6 is retracted first, the adjusting unit 5 moves backward, the rack and pinion meshes with the corresponding gear, and the blade tip of the cutter 44 is driven to point outward from the equipment body 1. At this time, the first cylinder 53 is activated, pushing the left connecting plate 55 and the right connecting plate 56 outward, driving the cutter 44 on the corresponding cutting unit 4 to approach the wall of the pipe 7. When the cutter 44 reaches the designated position, the motor 3 is activated, so that the cutter 44 beveles the large-diameter pipe 7 from the inside out.

[0033] In summary, the device is equipped with an adjustment unit 5 that can control the two cutters 44 to move synchronously in the radial direction, so that the radial movement distance of the cutters 44 is consistent. At the same time, when the adjustment unit 5 moves back and forth, it can drive the angle of the two cutters 44 to adjust synchronously, thereby improving the accuracy of the two cutters 44 in beveling the pipe 7. This allows the two cutters 44 to achieve full synchronization, avoiding the problem that there are often slight angle differences between the two cutters 44 due to the limitations of mechanical structure design, transmission system errors, or manual adjustment deviations. The device is equipped with a double-headed cylinder 2, which can be fixed on the outer wall of a small-diameter pipe 7 and also on the inner wall of a large-diameter pipe 7. This allows the device to be bevel pipes 7 of various diameters. At the same time, anti-slip pads 23 are provided on the telescopic rod of the double-headed cylinder 2, which increases the friction between the device body 1 and the pipe 7, so that the device can be installed on the pipe 7 more stably. By symmetrically arranging the second cylinder 6 and the adjustment unit 5, the device ensures that the force is more evenly distributed when the rotating ring 11 rotates, thereby improving the stability of the rotating ring 11 during rotation.

[0034] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A high-precision automatic pipe beveling device, characterized in that: Includes a device body (1), one end of which is rotatably connected to a rotating ring (11), and no less than three double-headed cylinders (2) for connecting pipes (7) are installed on the device body (1) along the circumferential direction. The outer end face of the rotating ring (11) is provided with a tool setting unit (4), an adjustment unit (5) and a second cylinder (6) for beveling the pipe (7). There are two tool setting units (4) and they are arranged symmetrically. The adjustment unit (5) and the second cylinder (6) are arranged symmetrically. The output end of the second cylinder (6) has a retractable second piston rod (61), one end of the second piston rod (61) is fixedly connected to an arc-shaped steel pipe (62), and the end of the arc-shaped steel pipe (62) away from the second cylinder (6) is fixedly connected to the adjustment unit (5); Each of the blade-setting units (4) has a cutter (44), and the adjustment unit (5) can simultaneously drive the two cutters (44) to move closer and further apart in the radial direction. While the adjustment unit (5) moves back and forth, it can drive the two cutters (44) to rotate synchronously.

2. The high-precision automatic pipe beveling equipment according to claim 1, characterized in that: The blade setting unit (4) has a slider (43) and a limiting cover (45). The cutter (44) is rotatably connected to the top of the slider (43), and the limiting cover (45) is fixedly connected to the inner side of the slider (43). The adjustment unit (5) has a left connecting plate (55) and a right connecting plate (56). The left connecting plate (55) is slidably installed in the limiting cover (45) of a tool setting unit (4), and the right connecting plate (56) is slidably installed in the limiting cover (45) of another tool setting unit (4).

3. The high-precision automatic pipe beveling equipment according to claim 2, characterized in that: The bottom of the cutter (44) extends downward with an extension post (441), and a rotating gear (46) is fixedly connected to the extension post (441). The left connecting plate (55) located inside the limiting cover (45) is equipped with a left rack (551), and the right connecting plate (56) located inside the limiting cover (45) is equipped with a right rack (561). The left rack (551) meshes with the rotating gear (46), and the right rack (561) meshes with a transmission gear. The transmission gear meshes with another rotating gear (46).

4. The high-precision automatic pipe beveling equipment according to claim 2, characterized in that: The adjustment unit (5) has a base plate (52), a rotating plate (57), a left connecting rod (58) and a right connecting rod (59). The base plate (52) is fixedly connected to the arc-shaped steel pipe (62). A rotating shaft (571) is fixedly connected to the center of the rotating plate (57). The rotating shaft (571) is rotatably connected to the base plate (52). One end of the left connecting rod (58) is hinged to the upper end of the rotating plate (57) and the other end is hinged to the left connecting plate (55). One end of the right connecting rod (59) is hinged to the lower end of the rotating plate (57) and the other end is hinged to the right connecting plate (56).

5. The high-precision automatic pipe beveling equipment according to claim 4, characterized in that: The adjustment unit (5) also has a sub-rail (54) and a first cylinder (53). The sub-rail (54) is fixedly connected to the top of the base plate (52) and distributed on both sides of the rotating plate (57). The left connecting plate (55) and the right connecting plate (56) are slidably installed on the corresponding sub-rail (54). The output end of the first cylinder (53) has a first piston rod (531), and the end of the first piston rod (531) is fixedly connected to the right connecting plate (56).

6. The high-precision automatic pipe beveling equipment according to claim 4, characterized in that: The adjustment unit (5) also has a main track (51), which is fixedly installed at the end of the rotating ring (11) and located between the two tool setting units (4), and the base plate (52) is slidably installed on the main track (51).

7. The high-precision automatic pipe beveling equipment according to claim 2, characterized in that: The tool setting unit (4) also has a fixed plate (41) fixedly connected to the rotating ring (11), and two limiting blocks (42) are fixedly connected to the top of the fixed plate (41), and the slider (43) is slidably installed between the limiting blocks (42).

8. The high-precision automatic pipe beveling equipment according to claim 1, characterized in that: A motor (3) is fixedly connected to the outer peripheral wall of the device body (1), and a transmission gear is fixedly connected to the output end of the motor (3). An outer gear ring that meshes with the transmission gear is provided inside the rotating ring (11).

9. The high-precision automatic pipe beveling equipment according to claim 1, characterized in that: The double-headed cylinder (2) has an outer telescopic rod (21) and an inner telescopic rod (22). The outer telescopic rod (21) is located on the outside of the equipment body (1), and the inner telescopic rod (22) is located on the inside of the equipment body (1). Anti-slip pads (23) are fixedly connected to the ends of the outer telescopic rod (21) and the inner telescopic rod (22).

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