A tapping device for machining a steel pipe and a machining method thereof

Abstract

The application relates to the technical field of tapping equipment, in particular to a tapping device for steel pipe machining and a machining method thereof, which comprises a first support, the upper end of the first support is provided with a U-shaped seat, and further comprises a supporting mechanism, the supporting mechanism comprises a first supporting seat and a second supporting seat which are slidably connected in the U-shaped seat, the top of the first supporting seat is connected with a limiting assembly, and the output end of the limiting assembly abuts against the top of a steel pipe. The supporting mechanism is arranged, high-pressure gas is filled into the graphite plate through the high-pressure gas device, and an air cushion is formed between the graphite plate and the bottom of the steel pipe, so that the friction can be reduced, the steel pipe is facilitated to move, and a follow-up support is formed; low-frequency vibration is effectively isolated through the air cushion, high-frequency vibration is absorbed through the rubber plate, the stability and precision of tapping machining are improved, the air cushion can also cool the steel pipe, heat deformation is prevented, and the quality of tapping machining is ensured.

Description

Technical Field

[0001] This invention relates to the field of tapping equipment technology, and in particular to a tapping device for steel pipe processing and its processing method. Background Technology

[0002] Pipe tapping equipment is a process of machining internal threads on steel pipes to obtain threaded steel pipes for connection with other threaded pipe fittings. Threaded connections offer good sealing and reliability and are widely used in pipeline systems in construction, water conservancy, chemical, and other fields. The pipe tapping device creates internal threads by screwing a tap into a pre-drilled hole. During pipe tapping, a fixed structure is typically used to hold the pipe in place. However, repeatedly disassembling and reassembling this structure is necessary when tapping pipes of different diameters, reducing its adaptability to various pipe sizes.

[0003] In existing technologies, a bidirectional threaded rod is used in conjunction with a tapping post with interchangeable tapping teeth to adapt to tapping of steel pipes of different specifications. However, this method lacks follow-up support for the tapping position of the steel pipe and efficient chip removal, which is not conducive to improving the stability and accuracy of tapping. Alternatively, a lubricant collection device is used to transport steel wire residue to the inner cavity of the housing using a rotating spiral conveyor rod. However, this method cannot achieve automatic feeding and efficient chip removal while tapping the steel pipe. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies, such as the lack of follow-up support for the tapping position of steel pipes and efficient chip removal, which are detrimental to improving the stability and accuracy of tapping processes. Therefore, this invention proposes a tapping device and its processing method for steel pipe processing.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A tapping device for steel pipe processing includes a first support, a U-shaped seat mounted on the upper end of the first support, and further includes:

[0007] The support mechanism includes a first support seat and a second support seat that are slidably connected inside the U-shaped seat. A limit component is connected to the top of the first support seat, and the output end of the limit component abuts against the top of the steel pipe. A semi-circular frame is connected to each side of the first and second support seats. The two semi-circular frames are brought close to each other to form a large circular frame. A mounting frame is slidably connected to one semi-circular frame, and a support frame is slidably connected to the mounting frame. A high-pressure gas device is installed on the support frame. One outlet of the high-pressure gas device is connected to a graphite plate, and the other outlet faces the chip removal area of ​​the tapping process. Rubber plates are rotatably connected to both sides of the graphite plate, and the graphite plate and the two rubber plates abut against the outside of the steel pipe.

[0008] The tapping mechanism is connected to one side of the first bracket and is used to tap the end of the steel pipe on the support mechanism.

[0009] Preferably, a first slide rail and a second slide rail are installed inside the U-shaped seat, a first support seat is slidably connected to the first slide rail, a second support seat is slidably connected to the second slide rail, a second hydraulic rod and a third hydraulic rod are installed on both sides of the U-shaped seat, the output end of the second hydraulic rod is fixedly connected to the first support seat, and the output end of the third hydraulic rod is fixedly connected to the second support seat.

[0010] Preferably, the upper ends of the first support and the second support are both wedge-shaped, with the wedge-shaped inclined surface being an inclined surface. The bottom of the U-shaped seat is provided with a discharge port. When the first support and the second support are close to each other, the discharge port is closed. When they are far apart, the bottom end of the inclined surface of the first support faces the discharge port. The first bracket is fixedly connected to the inside of the first inclined plate, and the lower end of the first inclined plate is fixedly connected to the baffle.

[0011] Preferably, the limiting component includes a support plate fixedly connected to the upper end of the first support base, a first hydraulic rod mounted on the support plate, a limiting plate fixedly connected to the output end of the first hydraulic rod, the limiting plate abutting against the top of the steel pipe after moving downward, a fan mounted on the support plate, the air outlet of the fan connected to an air guide pipe, and the air outlet of the air guide pipe facing the steel pipe and the chip removal area of ​​the tapping process.

[0012] Preferably, the tapping mechanism includes a second bracket fixedly connected to one side of the first bracket, a tapping assembly connected to the second bracket, a second inclined plate fixedly connected inside the second bracket, a receiving box slidably connected to the bottom of the second bracket, the lower end of the second inclined plate facing the inside of the receiving box, and a pull rod installed on the receiving box.

[0013] Preferably, the tapping assembly includes a geared motor mounted on a second bracket. A lead screw and a support rod are rotatably connected between the first and second brackets. The output end of the geared motor is coaxially and fixedly connected to the lead screw. A movable seat is threaded onto the lead screw. The end of the movable seat away from the lead screw is slidably connected to the support rod. A fourth hydraulic rod is mounted on the movable seat. A motor base is fixedly connected to the output end of the fourth hydraulic rod. Multiple guide rods are fixedly connected to the bottom of the motor base, and a tapping motor is installed inside. The bottom ends of the guide rods are slidably connected to the movable seat. A tap is mounted on the output end of the tapping motor. A protective plate is fixedly connected to the side of the motor base near the support mechanism.

[0014] Preferably, it also includes a feeding mechanism, which includes a third support fixedly connected to the side of the first support away from the second support. The upper end of the third support is fixedly connected to a feeding platform. The upper end of the feeding platform is provided with a feeding trough and a feeding trough. The inside of the feeding trough is a steel pipe to be tapped. A fifth hydraulic rod is installed on the wall of the feeding trough. The output end of the fifth hydraulic rod is fixedly connected to a push plate. When the push plate moves, it pushes the steel pipe inside the feeding trough into the interior of the support mechanism.

[0015] Preferably, the semicircular frame includes two fixed plates fixedly connected to the inclined surface. A semicircular rail is fixedly connected to the end of the fixed plate away from the inclined surface. A fixed rod is fixedly connected between the top ends of the two semicircular rails. When the corresponding semicircular rails on the two semicircular frames approach each other, they form a large circular rail. The inner side of the large circular rail is clearance-fitted with the outer side of the steel pipe. A retractable stabilizing plate is connected to the inner side of the top end of the semicircular rail. After the stabilizing plate extends, it abuts against the outer side of the steel pipe. A circumferential rolling device is slidably installed on the semicircular rail. Multiple connecting rods are fixedly connected between the two circumferential rolling devices. The two circumferential rolling devices and the multiple connecting rods form a mounting frame. A first driving device is installed on one circumferential rolling device. The output end of the first driving device is connected to the semicircular rail and is used to drive the mounting frame to move on the semicircular rail.

[0016] The support frame is equipped with a second drive device and a roller device. The roller device is simultaneously connected to multiple connecting rods in a rolling manner. When it is working, it drives the support frame to move on multiple connecting rods. The second drive device is electrically connected to the roller device and is used to supply power to the roller device. An electric rotating shaft is installed at the rotating connection between the graphite plate and the rubber plate. The electric rotating shaft is used to adjust the angle of the rubber plate relative to the graphite plate.

[0017] Preferably, an electrical control box is installed on the side wall of the U-shaped base. The electrical control box is electrically connected to the first hydraulic rod, the fan, the second hydraulic rod, the third hydraulic rod, the geared motor, the tapping motor, the fourth hydraulic rod, the fifth hydraulic rod, the first drive device, the second drive device, and the high-pressure gas device, and is used to control the working status of each actuator.

[0018] A tapping method for steel pipe processing includes the aforementioned tapping device for steel pipe processing, and further includes the following steps:

[0019] S1. Material preparation: The second and third hydraulic rods are activated simultaneously, and the two semi-circular frames are combined into a large circular frame through the first and second support seats.

[0020] S2, feeding: The fifth hydraulic rod is activated, and the steel pipe inside the feeding trough is pushed into the large circular frame through the push plate;

[0021] S3, Fix, the first hydraulic rod is activated, pressing down on the top of the steel pipe through the limit plate, while the graphite plate and two rubber plates support the bottom of the steel pipe;

[0022] S4. Tapping and positioning: The fourth hydraulic rod and the reduction motor are started to adjust the height and horizontal position of the tap.

[0023] S5. Tapping process: The tapping motor is started, and the end of the steel pipe is tapped using a tap.

[0024] S6. Follow-up support: The second drive device and high-pressure gas device are activated, causing the support frame to follow the tapping position and generating an air cushion between the graphite plate and the steel pipe to form a follow-up support and cooling.

[0025] S7. Chip removal: The fan starts, and its outlet and the high-pressure gas device blow air towards the chip removal area of ​​the tap, causing the chips to fall into the inside of the receiving box.

[0026] Compared with the prior art, the advantages of the present invention are as follows:

[0027] 1. This invention, through the setting of a support mechanism, wherein a high-pressure gas device injects high-pressure gas into a graphite plate, forming an air cushion between the graphite plate and the bottom of the steel pipe, not only reduces friction and facilitates the movement of the steel pipe, but also forms a follow-up support; moreover, the air cushion effectively isolates low-frequency vibrations, and the rubber plates absorb high-frequency vibrations, improving the stability and accuracy of tapping. At the same time, the air cushion can also cool the steel pipe, preventing thermal deformation and ensuring the quality of tapping; the graphite plate and two rubber plates support the bottom of the steel pipe, and the angle of the two rubber plates can be adjusted by an electric rotating shaft, enhancing the adaptability and fixing effect to steel pipes of different diameters.

[0028] 2. By setting up a support mechanism, when the first support seat and the second support seat are controlled to move away from each other, the processed steel pipe falls into the feed port along the rubber plate. The rubber plate buffers and guides the falling of the steel pipe. The fan and high-pressure gas device blow air towards the chip removal area of ​​the tapping process. The combination of the upper and lower air blowing facilitates the movement of the chips to the outside of the steel pipe, which improves the chip removal effect and ensures the tapping process effect. Attached Figure Description

[0029] Figure 1 This is a schematic diagram from the front view of a tapping device for steel pipe processing according to the present invention;

[0030] Figure 2 This is a top view schematic diagram of a tapping device for steel pipe processing according to the present invention;

[0031] Figure 3 This is a schematic diagram of the overall structure of a tapping device for steel pipe processing according to the present invention. Figure 1 ;

[0032] Figure 4 This is a schematic diagram of the overall structure of a tapping device for steel pipe processing according to the present invention. Figure 2 ;

[0033] Figure 5 This is a schematic diagram of the internal structure of the U-shaped seat of a tapping device for steel pipe processing according to the present invention;

[0034] Figure 6 This is a schematic diagram of a tapping assembly for a tapping device used in steel pipe processing according to the present invention;

[0035] Figure 7 This is a schematic diagram of the limiting component of a tapping device for steel pipe processing according to the present invention;

[0036] Figure 8 This is a schematic diagram of the receiving box of a tapping device for steel pipe processing according to the present invention;

[0037] Figure 9 This is a schematic diagram of the support mechanism of a tapping device for steel pipe processing according to the present invention;

[0038] Figure 10 This is a schematic diagram of the support frame for a tapping device for steel pipe processing according to the present invention.

[0039] In the diagram: 1. First bracket; 11. U-shaped seat; 2. Support mechanism; 21. First support seat; 211. Second support seat; 212. Inclined surface; 22. Discharge port; 23. First inclined plate; 231. Baffle; 24. Limiting component; 241. Support plate; 242. First hydraulic rod; 243. Limiting plate; 244. Fan; 245. Air guide pipe; 25. Second hydraulic rod; 251. Third hydraulic rod; 26. First slide rail; 261. Second slide rail; 27. Electrical control box; 3. Tapping mechanism; 31. Second bracket; 32. Second inclined plate; 33. Receiving box; 331. Pull rod; 34. Tapping component; 35. 36. Moving seat; 36. Lead screw; 361. Support rod; 362. Gear motor; 37. Motor base; 371. Tapping motor; 372. Tap; 38. Protective plate; 39. Fourth hydraulic rod; 391. Guide rod; 4. Feeding mechanism; 41. Third bracket; 42. Discharge platform; 43. Discharge chute; 44. Feeding chute; 45. Fifth hydraulic rod; 46. Push plate; 47. Semi-circular rail; 48. Fixing plate; 49. Connecting rod; 50. Stabilizing plate; 51. First drive device; 52. Circumferential rolling device; 53. Second drive device; 54. High-pressure gas device; 55. Roller device; 56. Rubber plate; 57. Graphite plate. Detailed Implementation

[0040] 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.

[0041] Reference Figures 1-10A tapping device for steel pipe processing includes a first support 1, with a U-shaped seat 11 mounted on the upper end of the first support 1, and further includes:

[0042] Support mechanism 2 includes a first support seat 21 and a second support seat 211 that are slidably connected inside the U-shaped seat 11.

[0043] The U-shaped base 11 is internally equipped with a first slide rail 26 and a second slide rail 261. A first support base 21 is slidably connected to the first slide rail 26, which supports the first support base 21 and guides its sliding motion. A second support base 211 is slidably connected to the second slide rail 261, which supports the second support base 211 and guides its sliding motion. A second hydraulic rod 25 and a third hydraulic rod 251 are installed on both sides of the U-shaped base 11. The output end of the second hydraulic rod 25 is fixedly connected to the first support base 21, and is used to push and pull the first support base 21 to make it slide. The output end of the third hydraulic rod 251 is fixedly connected to the second support base 211, and is used to push and pull the second support base 211 to make it slide.

[0044] The upper ends of the first support 21 and the second support 211 are both wedge-shaped, with the wedge-shaped inclined surface being an inclined surface 212. The bottom of the U-shaped seat 11 is provided with a discharge port 22. When the first support 21 and the second support 211 approach each other, the discharge port 22 is closed. When they move away from each other, the bottom end of the inclined surface 212 faces the discharge port 22. The first bracket 1 is fixedly connected to the inside of the first inclined plate 23. The lower end of the first inclined plate 23 is fixedly connected to the baffle 231.

[0045] When the first support seat 21 and the second support seat 211 move away from each other, the steel pipes on the first support seat 21 and the second support seat 211 fall onto the first inclined plate 23 through the discharge port 22, roll down the first inclined plate 23, and are finally blocked by the baffle 231, making it easier for the staff to take out the tapped steel pipes.

[0046] The top of the first support 21 is connected to a limit component 24, and the output end of the limit component 24 abuts against the top of the steel pipe.

[0047] The limiting assembly 24 includes a support plate 241 fixedly connected to the upper end of the first support base 21 by bolts. A first hydraulic rod 242 is installed on the support plate 241. The output end of the first hydraulic rod 242 is fixedly connected to a limiting plate 243. After the limiting plate 243 moves downward, it abuts against the top of the steel pipe. A fan 244 is installed on the support plate 241. The air outlet end of the fan 244 is connected to a guide pipe 245. The air outlet end of the guide pipe 245 faces the steel pipe and the chip removal area of ​​the tapping process.

[0048] The first hydraulic rod 242 is used to drive the limit plate 243 to rise and fall. The limit plate 243 presses down and fixes the steel pipes on the first support seat 21 and the second support seat 211, ensuring the stability of the steel pipes during tapping. The limit plate 243 can be disassembled and replaced to ensure the working effect of the limit plate 243.

[0049] When the fan 244 is working, it blows air through the air duct 245 toward the chip removal area of ​​the tapping process, blowing the long strips of wire chips generated by tapping the steel pipe outward, effectively preventing the wire chips from staying at the tapping position and affecting the tapping process.

[0050] The tapping mechanism 3 is connected to one side of the first bracket 1 and is used to tap the end of the steel pipe on the support mechanism 2.

[0051] The tapping mechanism 3 includes a second bracket 31 fixedly connected to one side of the first bracket 1. A tapping assembly 34 is connected to the second bracket 31. A second inclined plate 32 is fixedly connected inside the second bracket 31, and a receiving box 33 is slidably connected to the bottom. The lower end of the second inclined plate 32 faces the inside of the receiving box 33, and a pull rod 331 is installed on the receiving box 33.

[0052] When the shavings are blown by the wind onto the second inclined plate 32, they slide down into the receiving box 33. The receiving box 33 collects the shavings. Finally, the staff holds the lever 331 to pull out the receiving box 33 for centralized processing.

[0053] The tapping assembly 34 includes a reduction motor 362 mounted on a second bracket 31. A lead screw 36 and a support rod 361 are rotatably connected between the first bracket 1 and the second bracket 31. The output end of the reduction motor 362 is coaxially and fixedly connected to the lead screw 36. A movable seat 35 is threadedly connected to the lead screw 36. The end of the movable seat 35 away from the lead screw 36 is slidably connected to the support rod 361. A fourth hydraulic rod 39 is mounted on the movable seat 35. A motor seat 37 is fixedly connected to the output end of the fourth hydraulic rod 39. A plurality of guide rods 391 are fixedly connected to the bottom of the motor seat 37, and a tapping motor 371 is installed inside. The bottom end of the guide rods 391 is slidably connected to the movable seat 35. A tap 372 is mounted on the output end of the tapping motor 371. A protective plate 38 is fixedly connected to the side of the motor seat 37 near the support mechanism 2 by bolts.

[0054] When the geared motor 362 is working, its output end drives the lead screw 36 to rotate. The lead screw 36 drives the moving seat 35 to move horizontally, adjusting the horizontal position of the tap 372. When the fourth hydraulic rod 39 is working, it drives the motor seat 37 to rise and fall, adjusting the height position of the tap 372, thereby meeting the needs of tapping steel pipes of different diameters.

[0055] The guide rod 391 is used to guide the motor base 37 to rise and fall, increasing the stability of the motor base 37 when it moves.

[0056] When tap 372 taps the end of the steel pipe, the protective plate 38 moves to one side of the first support 21 and the second support 211 to block the long wire chips blown by the wind, so that the wire chips can fall onto the second inclined plate 32.

[0057] Tap 372 can be disassembled and replaced for tapping as needed.

[0058] It also includes a feeding mechanism 4, which includes a third support 41 fixedly connected to the side of the first support 1 away from the second support 31. The upper end of the third support 41 is fixedly connected to a feeding platform 42. The upper end of the feeding platform 42 is respectively provided with a feeding trough 43 and a feeding trough 44. The steel pipe to be tapped is placed inside the feeding trough 43. A fifth hydraulic rod 45 is installed on the wall of the feeding trough 44. A push plate 46 is fixedly connected to the output end of the fifth hydraulic rod 45. When the push plate 46 moves, it pushes the steel pipe inside the feeding trough 44 into the interior of the support mechanism 2.

[0059] The feeding trough 44 is V-shaped, which facilitates the stable placement of steel pipes.

[0060] When the fifth hydraulic rod 45 is working, its output end pushes the steel pipe inside the feeding trough 44 into the first support seat 21 and the second support seat 211 through the push plate 46. At the same time, while cleaning the shavings, the push plate 46 can also slide into the interior of the first support seat 21 and the second support seat 211 to clean the shavings remaining on the inclined surface 212.

[0061] Reference Figures 9-10 The first support 21 and the second support 211 are each connected to a semi-circular frame on opposite sides. The two semi-circular frames are brought close together to form a large circular frame. A mounting frame is slidably connected to one of the semi-circular frames, and a support frame is slidably connected to the mounting frame. A high-pressure gas device 54 is installed on the support frame. One of the gas outlets of the high-pressure gas device 54 is connected to a graphite plate 57, and the other gas outlet faces the chip removal area of ​​the tapping process. Rubber plates 56 are rotatably connected to both sides of the graphite plate 57. The graphite plate 57 and the two rubber plates 56 abut against the outside of the steel pipe.

[0062] The semicircular frame includes two fixed plates 48 fixedly connected to the inclined surface 212. A semicircular rail 47 is fixedly connected to one end of the fixed plate 48 away from the inclined surface 212. A fixed rod is fixedly connected between the top ends of the two semicircular rails 47. When the corresponding semicircular rails 47 on the two semicircular frames approach each other, they form a large circular rail. The inner side of the large circular rail is clearance-fitted with the outer side of the steel pipe. A retractable stabilizing plate 50 is connected to the inner side of the top end of the semicircular rail 47. After the stabilizing plate 50 extends, it abuts against the outer side of the steel pipe. A circumferential rolling device 52 is slidably installed on the semicircular rail 47. Multiple connecting rods 49 are fixedly connected between the two circumferential rolling devices 52. The two circumferential rolling devices 52 and the multiple connecting rods 49 form a mounting frame. A first driving device 51 is installed on one circumferential rolling device 52. The output end of the first driving device 51 is connected to the semicircular rail 47 and is used to drive the mounting frame to move on the semicircular rail 47.

[0063] The first driving device 51 includes a rotating motor mounted on the circumferential rolling device 52. The output end of the rotating motor is fixedly connected to a driving wheel, which is in contact with the semi-circular rail 47. When the rotating motor is working, its output end drives the driving wheel to roll on the semi-circular rail 47, thereby driving the circumferential rolling device 52 to move on the semi-circular rail 47.

[0064] An electric push rod is installed between the stabilizing plate 50 and the semi-circular rail 47. When the output end of the electric push rod extends, it pushes the stabilizing plate 50, which facilitates the fixing of the top of the steel pipe.

[0065] The support frame is equipped with a second drive device 53 and a roller device 55. The roller device 55 is simultaneously tactilely connected to multiple connecting rods 49. When it is working, it drives the support frame to move on the multiple connecting rods 49. The second drive device 53 is electrically connected to the roller device 55 and is used to supply power to the roller device 55.

[0066] The roller device 55 is an electric roller in the prior art. After the second drive device 53 is powered, the electric roller rotates on the connecting rod 49, driving the support frame to move on multiple connecting rods 49.

[0067] An electric rotating shaft is installed at the rotatable connection between the graphite plate 57 and the rubber plate 56. The electric rotating shaft is used to adjust the angle of the rubber plate 56 relative to the graphite plate 57.

[0068] The graphite plate 57 is made of graphite. Utilizing the porous nature of graphite, after high-pressure gas is introduced into the graphite, it escapes evenly from its surface, which facilitates the formation of an air cushion on the graphite surface. This reduces the friction between the graphite plate 57 and the steel pipe, making it easier for the steel pipe to move smoothly. In addition, the air cushion can also provide significant auxiliary support for the steel pipe, sharing most of the steel pipe's weight, thereby greatly reducing the load-bearing pressure on the rubber plate 56.

[0069] The rubber plate 56 is made of low-friction rubber material modified with polytetrafluoroethylene (PTFE). When moving at the tapping position, it ensures that the frictional resistance between the rubber plate 56 and the steel pipe is less than the driving force of the roller device 55 when it is working, so that the rubber plate 56 can slide smoothly along the outer wall of the steel pipe and avoid excessive frictional resistance from affecting the follow-up accuracy.

[0070] The rubber plate 56 has its opening angle adjusted by an electric rotating shaft. For steel pipes of different diameters, the contact posture between the rubber plate 56 and the bottom outer wall of the steel pipe is adjusted to ensure that the rubber plate 56 can fit the bottom arc surface of the steel pipe and form a stable "line contact support". This avoids the support surface from being suspended or the local stress being too large due to changes in pipe diameter. The two rubber plates 56 do not form a "radial clamping" of the steel pipe by reducing the angle of the two rubber plates 56. The two rubber plates 56 only maintain the supporting force on the steel pipe and do not actively participate in the axial and radial limiting of the steel pipe.

[0071] An electrical control box 27 is installed on the side wall of the U-shaped base 11. The electrical control box 27 has a built-in microcontroller control panel. The electrical control box 27 is electrically connected to the first hydraulic rod 242, fan 244, second hydraulic rod 25, third hydraulic rod 251, geared motor 362, tapping motor 371, fourth hydraulic rod 39, fifth hydraulic rod 45, first drive device 51, second drive device 53 and high-pressure gas device 54, and is used to control the working status of each actuator.

[0072] A miniature pressure sensor, which is electrically connected to the electrical control box 27, is embedded in the side of the graphite plate 57 facing the steel pipe. The miniature pressure sensor uses existing technology and is not shown in the figure. The miniature pressure sensor collects air cushion pressure data. The electrical control box 27 receives this pressure data and controls the working state of the high-pressure gas device 54. When the air cushion pressure decreases, the gas supply is increased to make the pressure rise. When the air cushion pressure increases, the gas supply is reduced simultaneously to avoid a sudden pressure rise.

[0073] When this invention is used, the second hydraulic rod 25 and the third hydraulic rod 251 are activated simultaneously. The output end of the second hydraulic rod 25 extends to push the first support seat 21, and the output end of the third hydraulic rod 251 extends to push the second support seat 211, so that the first support seat 21 and the second support seat 211 move closer to each other. The semi-circular rails 47 fixed on the inclined surfaces 212 of the two support seats by the fixing plate 48 are connected to each other to form a large circular rail.

[0074] When the feeding mechanism 4 is working, the worker or an external robot takes out the steel pipe to be tapped from the inside of the feeding trough 43 and puts it into the inside of the feeding trough 44. When the fifth hydraulic rod 45 is working, its output end pushes the steel pipe inside the feeding trough 44 into the inside of the two large circular rails through the push plate 46.

[0075] The first drive device 51 is started, and its output end rolls on the semi-circular rail 47, driving the circumferential rolling device 52 to move from the original semi-circular rail 47 to the large circular rail composed of two semi-circular rails 47, so that the mounting frame can move around the steel pipe axis at the bottom of the steel pipe.

[0076] The second drive device 53 is started to supply power to the roller device 55, causing the roller device 55 to move back and forth on multiple connecting rods 49. This facilitates the movement of the support frame on the mounting frame along the steel pipe axis, thereby facilitating the adjustment of the position of the high-pressure gas device 54, so that the graphite plate 57 and the two rubber plates 56 are located below the tapping position of the steel pipe.

[0077] When the steel pipe is pushed into the interior of the two large circular rails, the electric rotating shaft operates, adjusting the opening angle of the rubber plate 56 to facilitate fitting steel pipes of different diameters. There is a small gap between the graphite plate 57 and the bottom of the steel pipe. The high-pressure gas device 54 is activated, and its output end fills the graphite plate 57 with high-pressure gas. The high-pressure gas escapes from the surface of the graphite plate 57, forming an air cushion between it and the bottom of the steel pipe. The bottom of the steel pipe is supported by the air cushion generated by the graphite plate 57 and the two rubber plates 56.

[0078] Four stabilizing plates 50 extend in a controlled manner and are fixed at the four corners of the top of the steel pipe. At the same time, the first hydraulic rod 242 in the limiting assembly 24 works, and its output end drives the limiting plate 243 to move down and abut against the top of the steel pipe. The steel pipe is rigidly fixed in the vertical and radial directions through the top limiting plate 243 and the stabilizing plates 50, so that the steel pipe does not move axially or radially throughout the tapping process, and only bears the local pressure of the tap 372 feed, thus improving the fixing effect.

[0079] At this time, the positioning for tapping is performed. The fourth hydraulic rod 39 works, and its output end drives the motor base 37 to rise and fall, adjusting the height position of the tap 372. The reduction motor 362 works, and its output end drives the moving seat 35 to move horizontally through the lead screw 36, adjusting the horizontal position of the tap 372 so that the tap 372 can be aligned with the center position of the steel pipe.

[0080] After the tapping operation is completed and positioned, the tapping motor 371 starts working, and its output end drives the tap 372 to rotate, and the tap 372 performs tapping operation on the end of the steel pipe.

[0081] The air cushion between the graphite plate 57 and the pipe forms a "soft spring" effect, effectively isolating low-frequency vibrations. The rubber plates 56 on both sides absorb high-frequency vibrations through their own elastic properties. They absorb vibrations of different frequencies, effectively reducing the vibrations generated during steel pipe tapping and improving the tapping effect.

[0082] As the tapping depth increases, the support frame moves axially along the outer wall of the steel pipe under control. The direction of movement is consistent with the tapping feed direction and the speed is synchronized. The steel pipe remains stationary. Moreover, the position of the graphite plate 57 changes as the tap 372 penetrates deeper, continuously spraying air to cool the outer surface of the tapped part of the steel pipe, reducing the temperature of the tapped part, preventing thermal deformation of the steel pipe, and further improving the tapping effect.

[0083] Under the support of the air cushion on the steel pipe, the load-bearing pressure of the rubber plate 56 is greatly reduced. Combined with the rubber plate 56 made of low-friction rubber material and the small contact area between the rubber plate 56 and the steel pipe, the frictional resistance between the rubber plate 56 and the steel pipe is less than the driving force when the roller device 55 is working. This ensures that the rubber plate 56 moves without jamming when controlled, and thus the air cushion and the two rubber plates 56 form a follow-up support effect for the tapping position.

[0084] During the tapping process, the fan 244 operates, and its outlet blows air from top to bottom toward the steel pipe and the chip removal area of ​​the tapping process through the air guide pipe 245. At the same time, some of the high-pressure gas ejected by the high-pressure gas device 54 blows air from bottom to top toward the chip removal area of ​​the tapping process, which facilitates the movement of long wire chips to the outside of the steel pipe and effectively prevents wire chips from adhering to the inside of the steel pipe and affecting the tapping process.

[0085] After the filaments are blown out of the steel pipe, they fall onto the second inclined plate 32 under the obstruction of the protective plate 38, and finally fall into the inside of the receiving box 33 for centralized collection of the filaments.

[0086] After the steel pipe is tapped, the first hydraulic rod 242 drives the limiting plate 243 to rise, the stabilizing plate 50 retracts in a controlled manner, releasing the fixation on the top of the steel pipe. The first driving device 51 drives the circumferential rolling device 52 to move onto the semicircular rail 47 of a support seat, causing the graphite plate 57 and the two rubber plates 56 to move to the side of the steel pipe. The second hydraulic rod 25 and the third hydraulic rod 251 start simultaneously, causing the first support seat 21 and the second support seat 211 to move away from each other. The two semicircular rails 47 that form the large circular rail then separate. At this time, the steel pipe rolls down along the rubber plate 56 below. Under the buffer and guidance of the rubber plate 56, the steel pipe falls through the discharge port 22 onto the first inclined plate 23 and is finally blocked by the baffle 231, making it easier for the workers to remove the tapped steel pipe.

[0087] A tapping method for steel pipe processing includes the aforementioned tapping device for steel pipe processing, and further includes the following steps:

[0088] S1. Material preparation: The second hydraulic rod 25 and the third hydraulic rod 251 are activated simultaneously, and the two semi-circular frames are combined into a large circular frame through the first support seat 21 and the second support seat 211.

[0089] S2, feeding: The fifth hydraulic rod 45 is activated, and the steel pipe inside the feeding trough 44 is pushed into the large circular frame through the push plate 46.

[0090] S3, Fix: The first hydraulic rod 242 is activated, pressing down on the top of the steel pipe through the limiting plate 243, while the graphite plate 57 and two rubber plates 56 support the bottom of the steel pipe.

[0091] S4, tapping and positioning, the fourth hydraulic rod 39 and the reduction motor 362 are started, and the height and horizontal position of the tap 372 are adjusted.

[0092] S5. Tapping process: The tapping motor 371 starts and taps the end of the steel pipe through the tap 372.

[0093] S6, follow-up support, the second drive device 53 and the high-pressure gas device 54 are started, so that the support frame follows the tapping position and generates an air cushion between the graphite plate 57 and the steel pipe, forming follow-up support and cooling.

[0094] S7. Chip removal: Fan 244 starts, and its and the outlet of high-pressure gas device 54 blow air toward the chip removal area of ​​tap 372, causing the chips to fall into the inside of receiving box 33.

[0095] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A tapping device for steel pipe processing, comprising a first support (1), wherein a U-shaped seat (11) is mounted on the upper end of the first support (1), characterized in that, Also includes: Support mechanism (2), the support mechanism (2) includes a first support seat (21) and a second support seat (211) slidably connected inside the U-shaped seat (11). The top of the first support seat (21) is connected to a limit component (24). The output end of the limit component (24) abuts against the top of the steel pipe. The first support seat (21) and the second support seat (211) are each connected to a semi-circular frame on opposite sides. The two semi-circular frames approach each other to form a large circular frame. A mounting frame is slidably connected to one semi-circular frame. A support frame is slidably connected to the mounting frame. A high-pressure gas device (54) is installed on the support frame. One outlet of the high-pressure gas device (54) is connected to a graphite plate (57). The other outlet faces the chip removal area of ​​the tapping process. Rubber plates (56) are rotatably connected to both sides of the graphite plate (57). The graphite plate (57) and the two rubber plates (56) abut against the outside of the steel pipe. The tapping mechanism (3) is connected to one side of the first bracket (1) and is used to tap the end of the steel pipe on the support mechanism (2). The upper ends of the first support (21) and the second support (211) are both wedge-shaped, with the wedge-shaped inclined surface being an inclined surface (212). The bottom of the U-shaped seat (11) is provided with a discharge port (22). When the first support (21) and the second support (211) approach each other, the discharge port (22) is closed. When they move away from each other, the bottom end of the inclined surface (212) faces the discharge port (22). The first bracket (1) is fixedly connected to the inside of the first inclined plate (23), and the lower end of the first inclined plate (23) is fixedly connected to the baffle (231). The semicircular frame includes two fixed plates (48) fixedly connected to the inclined surface (212). A semicircular rail (47) is fixedly connected to one end of the fixed plate (48) away from the inclined surface (212). A fixed rod is fixedly connected between the top ends of the two semicircular rails (47). When the corresponding semicircular rails (47) on the two semicircular frames are brought close to each other, they form a large circular rail. The inner side of the large circular rail is fitted with the outer side of the steel pipe with a clearance. A telescopic stabilizing plate (50) is connected to the inner side of the top end of the semicircular rail (47). After extending, it rests against the outside of the steel pipe. A circumferential rolling device (52) is slidably installed on the semicircular rail (47). Multiple connecting rods (49) are fixedly connected between the two circumferential rolling devices (52). The two circumferential rolling devices (52) and multiple connecting rods (49) form a mounting frame. A first driving device (51) is installed on one circumferential rolling device (52). The output end of the first driving device (51) is connected to the semicircular rail (47) and is used to drive the mounting frame to move on the semicircular rail (47). A second drive device (53) and a roller device (55) are installed on the support frame. The roller device (55) is simultaneously connected to multiple connecting rods (49) in a rolling manner. When it is working, it drives the support frame to move on multiple connecting rods (49). The second drive device (53) is electrically connected to the roller device (55) and is used to supply power to the roller device (55). An electric rotating shaft is installed at the rotating connection between the graphite plate (57) and the rubber plate (56). The electric rotating shaft is used to adjust the angle of the rubber plate (56) relative to the graphite plate (57).

2. The tapping device for steel pipe processing according to claim 1, characterized in that, The U-shaped seat (11) is equipped with a first slide rail (26) and a second slide rail (261). The first support seat (21) is slidably connected to the first slide rail (26), and the second support seat (211) is slidably connected to the second slide rail (261). The U-shaped seat (11) is equipped with a second hydraulic rod (25) and a third hydraulic rod (251) on both sides. The output end of the second hydraulic rod (25) is fixedly connected to the first support seat (21), and the output end of the third hydraulic rod (251) is fixedly connected to the second support seat (211).

3. The tapping device for steel pipe processing according to claim 2, characterized in that, The limiting component (24) includes a support plate (241) fixedly connected to the upper end of the first support base (21). A first hydraulic rod (242) is installed on the support plate (241). The output end of the first hydraulic rod (242) is fixedly connected to a limiting plate (243). After the limiting plate (243) moves downward, it abuts against the top of the steel pipe. A fan (244) is installed on the support plate (241). The air outlet of the fan (244) is connected to a guide pipe (245). The air outlet of the guide pipe (245) faces the steel pipe and the chip removal area of ​​the tapping process.

4. The tapping device for steel pipe processing according to claim 3, characterized in that, The tapping mechanism (3) includes a second bracket (31) fixedly connected to one side of the first bracket (1), a tapping assembly (34) connected to the second bracket (31), a second inclined plate (32) fixedly connected inside the second bracket (31), and a receiving box (33) slidably connected to the bottom. The lower end of the second inclined plate (32) faces the inside of the receiving box (33), and a pull rod (331) is installed on the receiving box (33).

5. The tapping device for steel pipe processing according to claim 4, characterized in that, The tapping assembly (34) includes a geared motor (362) mounted on a second bracket (31). A lead screw (36) and a support rod (361) are rotatably connected between the first bracket (1) and the second bracket (31). The output end of the geared motor (362) is coaxially fixedly connected to the lead screw (36). A movable seat (35) is threadedly connected to the lead screw (36). The end of the movable seat (35) away from the lead screw (36) is slidably connected to the support rod (361). A fourth hydraulic rod (39) is mounted on the movable seat (35). A motor seat (37) is fixedly connected to the output end of the fourth hydraulic rod (39). A plurality of guide rods (391) are fixedly connected to the bottom of the motor seat (37), and a tapping motor (371) is installed inside. The bottom end of the guide rods (391) is slidably connected to the movable seat (35). A tap (372) is mounted on the output end of the tapping motor (371). A protective plate (38) is fixedly connected to the side of the motor seat (37) near the support mechanism (2).

6. The tapping device for steel pipe processing according to claim 5, characterized in that, It also includes a feeding mechanism (4), which includes a third support (41) fixedly connected to the side of the first support (1) away from the second support (31). The upper end of the third support (41) is fixedly connected to a feeding platform (42). The upper end of the feeding platform (42) is provided with a feeding trough (43) and a feeding trough (44). The inside of the feeding trough (43) is filled with a steel pipe to be tapped. The wall of the feeding trough (44) is equipped with a fifth hydraulic rod (45). The output end of the fifth hydraulic rod (45) is fixedly connected to a push plate (46). When the push plate (46) moves, it pushes the steel pipe inside the feeding trough (44) into the support mechanism (2).

7. The tapping device for steel pipe processing according to claim 6, characterized in that, An electrical control box (27) is installed on the side wall of the U-shaped base (11). The electrical control box (27) is electrically connected to the first hydraulic rod (242), fan (244), second hydraulic rod (25), third hydraulic rod (251), geared motor (362), tapping motor (371), fourth hydraulic rod (39), fifth hydraulic rod (45), first drive device (51), second drive device (53) and high-pressure gas device (54) to control the working status of each actuator.

8. A tapping method for steel pipe processing, characterized in that, The tapping device for steel pipe processing according to claim 7 further includes the following steps: S1, Material preparation: The second hydraulic rod (25) and the third hydraulic rod (251) are started simultaneously, and the two semi-circular frames are combined into a large circular frame through the first support seat (21) and the second support seat (211); S2, feeding, the fifth hydraulic rod (45) is activated, and the steel pipe inside the feeding trough (44) is pushed into the large circular frame through the push plate (46); S3, Fix, the first hydraulic rod (242) is activated, and the top of the steel pipe is pressed down through the limit plate (243), while the graphite plate (57) and two rubber plates (56) support the bottom of the steel pipe; S4, tapping positioning, the fourth hydraulic rod (39) and the reduction motor (362) are started, and the height and horizontal position of the tap (372) are adjusted; S5. Tapping process: The tapping motor (371) is started, and the end of the steel pipe is tapped by the tap (372); S6, follow-up support, the second drive device (53) and the high-pressure gas device (54) are started, so that the support frame follows the tapping position and generates a layer of air cushion between the graphite plate (57) and the steel pipe to form follow-up support and cooling; S7. Remove chips. The fan (244) is started, and its outlet and the high-pressure gas device (54) blow air toward the chip removal area of ​​the tap (372), so that the chips fall into the inside of the receiving box (33).

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