Water cutting tapping machine in pipeline

Abstract

The invention relates to the technical field of tapping machines, and particularly discloses a water cutting tapping machine in a pipeline. A guide groove is formed in the middle of the top end of the base, an adjusting mechanism is jointly installed between the inner walls of the two sides of the guide groove, a fixing mechanism is installed at one end of the adjusting mechanism, and a cutting mechanism is installed at the other end of the fixing mechanism. The cutting mechanism comprises a mounting seat, a laser range finder, a six-axis mechanical arm, a cutting nozzle, a water conveying pipe, a positioning block and a water pump; the water pump is started to pump water and input the water into the water conveying pipe, then the water is pressurized and sprayed out through the cutting spray head, high-speed and high-pressure water jet is formed, the six-axis mechanical arm can flexibly adjust the position of the cutting spray head, and therefore the tapping machine has good adaptability and can be suitable for water cutting tapping of metal pipelines of different materials, wall thicknesses and diameters; by means of the design, the cutting quality and efficiency are improved, and the application range in practical application is greatly widened.

Description

Technical Field

[0001] The invention belongs to the technical field of hole-opening machines, and in particular relates to a pipe waterjet cutting hole-opening machine. Background Art

[0002] In the process of metal pipe processing, hole opening operation is a common process requirement. The traditional hole opening method often uses mechanical tools for cutting. Although this method can meet the processing needs to a certain extent, it has problems such as low cutting efficiency, difficulty in ensuring accuracy, and easy thermal deformation or thermal effects. With the advancement of science and technology and the development of industry, people have begun to explore more efficient, environmentally friendly and precise cutting methods. Waterjet cutting technology has been widely used in the field of industrial cutting due to its low cost, easy operation, high yield rate and environmental protection.

[0003] Since metal pipes play a vital role in industrial production, and they are of various types and specifications, this places extremely high demands on the adaptability of the hole-opening machine. However, traditional hole-opening machines often have limitations in design and their adaptability is not ideal. When faced with pipes of different materials, wall thicknesses and diameters, traditional hole-opening machines are often unable to perform effective cutting, which not only affects the quality and efficiency of cutting, but also greatly limits its scope of application in practical applications. Summary of the invention

[0004] The purpose of the present invention is to provide a pipe waterjet cutting machine with good adaptability to solve the problem that traditional hole cutting machines are not suitable for drilling holes in different metal pipes.

[0005] To achieve the above object, the present invention provides the following technical solutions: A pipe water jet cutting machine, comprising: Base; A guide groove is provided in the middle of the top of the base, an adjustment mechanism is installed between the inner walls on both sides of the guide groove, a fixing mechanism is installed at one end of the adjustment mechanism, and a cutting mechanism is installed at the other end of the fixing mechanism; The cutting mechanism includes a mounting seat, a laser rangefinder, a six-axis robotic arm, a cutting nozzle, a water pipe, a positioning block and a water pump. The mounting seat is installed at the other end of the fixing mechanism. Four laser rangefinders are provided, and the four laser rangefinders are respectively installed on the four outer sides of the mounting seat. The six-axis robotic arm is installed at the other end of the mounting seat. The cutting nozzle is installed at the other end of the six-axis robotic arm. The water pipe is installed at the other end of the cutting nozzle. Three positioning blocks are provided, and the three positioning blocks are all installed in the middle of the outer surface of the water pipe. The water pump is installed at the other end of the water pipe, and the water pump is installed at the lower part of the outer wall of the water tank.

[0006] Preferably, a water tank is installed at the bottom end of the base, a control panel is installed on one side of the outer wall of the water tank, a water inlet pipe is installed on the upper part of one end of the water tank, and a metal pipe is installed on the outer surface of the fixing mechanism.

[0007] Preferably, the laser rangefinder, the six-axis robotic arm and the water pump are all electrically connected to the control panel, and both sides of the outer surface of the water pipe are arranged as folding structures.

[0008] Preferably, the adjustment mechanism includes a movable frame, a short screw, a long screw, a driving motor and an adjusting frame, the short screw is installed between the inner walls on both sides of the movable frame, the long screw is installed on the lower part of the outer surface of the movable frame, and the long screw is installed between the inner walls on both sides of the guide groove through a bearing, two driving motors are provided, and the two driving motors are respectively installed at one end of the short screw and the long screw, and the adjusting frame is installed on the outer surface of the short screw.

[0009] Preferably, the adjustment frame includes a fixed frame, an electric telescopic rod, an adjustment block and a limit frame, the fixed frame is installed in the middle of the outer surface of the short screw, the electric telescopic rod is installed at the top of the fixed frame, the adjustment block is installed at the bottom end of the electric telescopic rod, and the limit frame is installed on the bottom inner wall of the fixed frame.

[0010] Preferably, the electric telescopic rod and the driving motor are both electrically connected to the control panel, the adjustment block is configured as a cross-shaped structure, and the movable frame is configured as a convex structure.

[0011] Preferably, the fixing mechanism includes a fixing box, a limiting groove, an extension frame, a fixing plate, a driver and a first bevel gear, the fixing box is installed at one end of the adjusting block, a plurality of limiting grooves are provided, and the plurality of limiting grooves are respectively opened on the four outer sides of the fixing box, the extension frame is installed between the inner walls on both sides of the fixing box, four fixing plates are provided, and the four fixing plates are respectively installed on the four outer sides of the extension frame, the driver is installed in the middle of the bottom end of the fixing box, the first bevel gear is installed at the output end of the driver, and the first bevel gear is installed on the bottom inner wall of the fixing box through a bearing.

[0012] Preferably, the stretching frame includes forward and reverse screw rods, second bevel gears, an adjustment plate and a support frame, the forward and reverse screw rods are installed between the inner walls on both sides of the fixed box through bearings, the second bevel gears are installed in the middle of the outer surface of the forward and reverse screw rods, there are two adjustment plates, and the two adjustment plates are respectively installed on both sides of the outer surface of the forward and reverse screw rods, there are multiple support frames, and the multiple support frames are respectively installed on the outer surfaces of the two adjustment plates through connecting seats, and the other ends of the multiple support frames are installed on the inner sides of the corresponding fixed plates through connecting seats.

[0013] Preferably, the second bevel gear is meshed with the first bevel gear, the support frame is configured as an H-shaped structure, the driver is electrically connected to the control panel, and a curved rubber pad is installed at one end of the fixing plate close to the metal pipe.

[0014] Compared with the prior art, the present invention has the following beneficial effects: (1) The present invention sets a cutting mechanism at one end of the fixing mechanism, starts the water pump to extract water and input it into the water pipe, and then pressurizes the water and sprays it out through the cutting nozzle to form a high-speed, high-pressure water jet. The six-axis robot arm can flexibly adjust the position of the cutting nozzle, which makes the hole-cutting machine have better adaptability and can be used for water cutting and hole-cutting of metal pipes of different materials, wall thicknesses and diameters. This design not only improves the quality and efficiency of cutting, but also greatly expands the scope of application in practical applications.

[0015] (2) The present invention provides an adjustment mechanism inside the guide groove. The fixing frame can be driven to move forward and backward by the short screw, and to move left and right by the long screw. The extension and retraction of the electric telescopic rod drives the adjustment block to move up and down. In this way, the position of the fixing mechanism can be flexibly adjusted according to the detection data of the laser rangefinder, thereby ensuring that the fixing mechanism can be accurately inserted into the center point of the metal pipe.

[0016] (3) The present invention sets a fixing mechanism on the outer surface of the adjusting mechanism. Through the drive of the driver and the meshing transmission of the two bevel teeth, the positive and negative screws drive the two adjusting plates thereon to move outward. This movement in turn causes the support frame to push the fixing plate to unfold, thereby achieving a firm fixation of the metal pipe. This design improves the stability of the metal pipe during the cutting and opening process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A perspective view of the present invention; Figure 2 A three-dimensional diagram of the hole-opening machine of the present invention; Figure 3 is a three-dimensional diagram of the cutting mechanism of the present invention; Figure 4 is a three-dimensional diagram of the adjustment mechanism of the present invention; Figure 5 A three-dimensional diagram of the adjustment frame of the present invention; Figure 6 is a cross-sectional view of the fixing mechanism of the present invention; Figure 7 A three-dimensional diagram of the stretching frame of the present invention; Figure 8 For the present invention Figure 6 A magnified view of middle; In the figure: 1. base; 2. guide groove; 3. adjustment mechanism; 4. fixing mechanism; 5. cutting mechanism; 6. water storage tank; 7. control panel; 8. water inlet pipe; 9. metal pipe; 31. Moving frame; 32. Short screw; 33. Long screw; 34. Driving motor; 35. Adjusting frame; 351, fixed frame; 352, electric telescopic rod; 353, adjustment block; 354, limit frame; 41. fixed box; 42. limit slot; 43. stretching frame; 44. fixed plate; 45. driver; 46. first bevel gear; 431, positive and negative screw rods; 432, second bevel gear; 433, adjustment plate; 434, support frame; 51. Mounting base; 52. Laser rangefinder; 53. Six-axis robotic arm; 54. Cutting nozzle; 55. Water pipe; 56. Positioning block; 57. Water pump. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] Embodiment 1:

[0020] See also Figures 1 to 8 As shown, a pipe water jet cutting machine comprises: Base 1; A guide groove 2 is provided at the middle of the top of the base 1, an adjustment mechanism 3 is installed between the inner walls on both sides of the guide groove 2, a fixing mechanism 4 is installed at one end of the adjustment mechanism 3, and a cutting mechanism 5 is installed at the other end of the fixing mechanism 4; The cutting mechanism 5 includes a mounting seat 51, a laser rangefinder 52, a six-axis robotic arm 53, a cutting nozzle 54, a water pipe 55, a positioning block 56 and a water pump 57. The mounting seat 51 is installed at the other end of the fixing mechanism 4. Four laser rangefinders 52 are provided, and the four laser rangefinders 52 are respectively installed on the four outer sides of the mounting seat 51. The six-axis robotic arm 53 is installed at the other end of the mounting seat 51. The cutting nozzle 54 is installed at the other end of the six-axis robotic arm 53. The water pipe 55 is installed at the other end of the cutting nozzle 54. Three positioning blocks 56 are provided, and the three positioning blocks 56 are all installed in the middle of the outer surface of the water pipe 55. The water pump 57 is installed at the other end of the water pipe 55, and the water pump 57 is installed at the lower part of the outer wall of the water storage tank 6.

[0021] Depend on Figures 1 to 3It can be seen that a water tank 6 is installed at the bottom end of the base 1, a control panel 7 is installed on one side of the outer wall of the water tank 6, a water inlet pipe 8 is installed on the upper part of one end of the water tank 6, and a metal pipe 9 is installed on the outer surface of the fixing mechanism 4.

[0022] As can be seen from the above, when in use, the hole punching machine can be placed next to the metal pipe 9, or the metal pipe 9 can be placed next to the hole punching machine, and then the entire hole punching machine can be started through the control panel 7, and the adjustment mechanism 3 can be started to extend the fixing mechanism 4 and the cutting mechanism 5 into the metal pipe 9. At this time, the four laser rangefinders 52 can detect the distance between them and the metal pipe 9, and then the adjustment mechanism 3 can be controlled to adjust the fixing mechanism 4 to the center position of the metal pipe 9, and then the fixing mechanism 4 is started to fix the metal pipe 9 firmly, and then the position of the cutting nozzle 54 can be flexibly adjusted through the six-axis robot arm 53 to adjust the cutting nozzle 54 to the target position of the metal pipe 9. The hole opening position can be set, and then the water pump 57 can be started to pump out the water in the water tank 6, and then the water can be input into the cutting nozzle 54 through the water pipe 55 for pressurized spraying, which can form a high-speed, high-pressure water jet. The six-axis robot arm 53 simultaneously drives the cutting nozzle 54 to move to realize effective cutting and opening of the metal pipe 9. Through the flexible adjustment of the six-axis robot arm 53, the limitations of the hole opening machine during use are reduced, so that the hole opening machine has better adaptability and can be suitable for water cutting and opening of metal pipes 9 of different materials, wall thicknesses and diameters. This design not only improves the quality and efficiency of cutting, but also greatly expands the scope of application in practical applications.

[0023] Specifically, refer to Figures 1 to 3 As shown, the laser rangefinder 52, the six-axis robot arm 53 and the water pump 57 are all electrically connected to the control panel 7, and both sides of the outer surface of the water pipe 55 are set as a folding structure.

[0024] As can be seen from the above, the laser rangefinder 52 can be started and measure a specific distance, and then the data is transmitted back to the control panel 7 for analysis and decision-making. Through the instructions of the control panel 7, the six-axis robot arm 53 can be flexibly moved and operated to adapt to different work requirements, and the control panel 7 can also control the start, stop and speed of the water pump 57 to meet specific liquid delivery requirements, so that the water pipe 55 can move with the flexible movement of the cutting nozzle 54, greatly improving the flexibility and adaptability of the water pipe 55.

[0025] Embodiment 2:

[0026] refer to Figure 4 and Figure 5As shown, the adjustment mechanism 3 includes a moving frame 31, a short screw 32, a long screw 33, a driving motor 34 and an adjusting frame 35. The short screw 32 is installed between the inner walls on both sides of the moving frame 31, the long screw 33 is installed at the lower part of the outer surface of the moving frame 31, and the long screw 33 is installed between the inner walls on both sides of the guide groove 2 through a bearing. Two driving motors 34 are provided, and the two driving motors 34 are respectively installed at one end of the short screw 32 and the long screw 33. The adjusting frame 35 is installed on the outer surface of the short screw 32; The adjusting frame 35 includes a fixing frame 351, an electric telescopic rod 352, an adjusting block 353 and a limiting frame 354. The fixing frame 351 is installed at the middle of the outer surface of the short screw rod 32, the electric telescopic rod 352 is installed at the top of the fixing frame 351, the adjusting block 353 is installed at the bottom end of the electric telescopic rod 352, and the limiting frame 354 is installed on the bottom inner wall of the fixing frame 351.

[0027] As can be seen from the above, the control panel 7 controls the drive motor 34 and the electric telescopic rod 352 to start, the short screw 32 rotates to drive the fixed frame 351 to move forward and backward, and is kept stable by sliding and limiting on the mobile frame 31 through the limit frame 354, while the long screw 33 rotates to drive the mobile frame 31 to move left and right, and is kept stable by sliding and limiting in the guide groove 2 through the mobile frame 31, and the electric telescopic rod 352 telescopically drives the adjustment block 353 to move up and down, and is kept stable by guiding and limiting the adjustment block 353 through the fixed frame 351. In this way, the entire adjustment mechanism 3 can flexibly adjust the position of the fixing mechanism 4 according to the detection data of the laser rangefinder 52 to ensure that the fixing mechanism 4 is accurately inserted into the center point of the metal pipe 9, so as to achieve accurate fixation and efficient cutting of the metal pipe 9.

[0028] Preferably, reference Figure 4 and Figure 5 As shown, the electric telescopic rod 352 and the driving motor 34 are both electrically connected to the control panel 7, the adjustment block 353 is configured as a cross-shaped structure, and the moving frame 31 is configured as a convex structure.

[0029] As can be seen from the above, through the instructions of the control panel 7, the electric telescopic rod 352 and the drive motor 34 can work together to complete a specific movement task. The cross-shaped structure design can limit the adjustment block 353 on the fixed frame 351, so that the adjustment block 353 has stronger stability and adjustment ability. In addition, the convex structure enables the movable frame 31 to be slidably connected with the guide groove 2, which plays a good limiting role on the movable frame 31.

[0030] Embodiment three:

[0031] refer to Figures 6 to 8As shown, the fixing mechanism 4 includes a fixing box 41, a limiting groove 42, a stretching frame 43, a fixing plate 44, a driver 45 and a first bevel gear 46. The fixing box 41 is installed at one end of the adjusting block 353. A plurality of limiting grooves 42 are provided, and the plurality of limiting grooves 42 are respectively opened on four outer sides of the fixing box 41. The stretching frame 43 is installed between the inner walls on both sides of the fixing box 41. Four fixing plates 44 are provided, and the four fixing plates 44 are respectively installed on the four outer sides of the stretching frame 43. The driver 45 is installed at the middle of the bottom end of the fixing box 41. The first bevel gear 46 is installed at the output end of the driver 45, and the first bevel gear 46 is installed on the bottom inner wall of the fixing box 41 through a bearing. The stretching frame 43 includes a forward and reverse screw rod 431, a second bevel gear 432, an adjustment plate 433 and a support frame 434. The forward and reverse screw rod 431 is installed between the inner walls on both sides of the fixed box 41 through a bearing, and the second bevel gear 432 is installed in the middle of the outer surface of the forward and reverse screw rod 431. There are two adjustment plates 433, and the two adjustment plates 433 are respectively installed on both sides of the outer surface of the forward and reverse screw rod 431. There are multiple support frames 434, and the multiple support frames 434 are respectively installed on the outer surfaces of the two adjustment plates 433 through connecting seats, and the other ends of the multiple support frames 434 are installed on the inner side of the corresponding fixed plate 44 through the connecting seat.

[0032] As can be seen from the above, when the adjusting mechanism 3 drives the fixing mechanism 4 to be inserted into the center position inside the metal pipe 9, the driver 45 is started by controlling the control panel 7. At this time, through the meshing transmission between the first bevel gear 46 and the second bevel gear 432, the positive and negative screw rods 431 drive the two adjusting plates 433 thereon to move outward, and the adjusting plates 433 are guided and limited by the limiting grooves 42, thereby improving stability. This movement in turn straightens the support frame 434 to push the fixing plate 44 to unfold, so that the outer wall of the fixing plate 44 is in close contact with the inner wall of the metal pipe 9, thereby achieving a firm fixation of the metal pipe 9. Such a design not only improves the stability of the metal pipe 9 during the cutting and opening process, but also helps to improve cutting accuracy, protect cutting equipment, improve operational safety, and enhance the adaptability of the equipment to different metal pipes 9.

[0033] Preferably, reference Figures 6 to 8 As shown, the second bevel gear 432 is meshed with the first bevel gear 46 , the support frame 434 is configured as an H-shaped structure, the driver 45 is electrically connected to the control panel 7 , and a curved rubber pad is installed at one end of the fixing plate 44 close to the metal pipe 9 .

[0034] As can be seen from the above, the positive and negative screws 431 can be effectively driven through the meshing of the bevel teeth. The H-shaped structure design makes the support frame 434 have stronger stability and load-bearing capacity. Through the instructions issued by the control panel 7, the driver 45 can accurately control the movement and speed of the mechanical components. In addition, the use of curved rubber pads is used to increase the friction and sealing between the fixed plate 44 and the metal pipe 9.

[0035] Application examples: This design is used in industrial environments where it is necessary to cut and open holes in metal pipes 9 accurately and efficiently, such as petrochemicals, urban water and gas supply systems, and shipbuilding and marine engineering. When these pipes need to be modified, repaired, or new branch pipes are added, the hole opening machine is particularly important. This design is mainly based on high-pressure water jet cutting technology. It uses a high-pressure pump to pressurize water to an extremely high pressure, and then forms a high-speed, high-pressure water jet through a special cutting nozzle 54. When this water jet hits the inner wall of the metal pipe 9, its huge energy is enough to cut the pipe wall and form the required hole. The required holes can be accurately cut out by precisely controlling the position and moving speed of the cutting nozzle 54. By setting the cutting mechanism 5, the six-axis robot 53 can flexibly adjust the position of the cutting nozzle 54, so as to facilitate the cutting and opening of metal pipes 9 of different materials, wall thicknesses and diameters, thereby further improving the adaptability of the hole opening machine. The adjusting mechanism 3 can flexibly move the fixing mechanism 4 to make it precisely positioned at the center of the metal pipe 9. The fixing of the metal pipe 9 by the fixing mechanism 4 can ensure the stability of the metal pipe 9 during the cutting process.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pipe waterjet cutting machine, characterized in that: include: Base (1); A guide groove (2) is provided in the middle of the top of the base (1); an adjustment mechanism (3) is installed between the inner walls on both sides of the guide groove (2); a fixing mechanism (4) is installed at one end of the adjustment mechanism (3); and a cutting mechanism (5) is installed at the other end of the fixing mechanism (4); The cutting mechanism (5) comprises a mounting seat (51), a laser rangefinder (52), a six-axis mechanical arm (53), a cutting nozzle (54), a water pipe (55), a positioning block (56) and a water pump (57). The mounting seat (51) is mounted on the other end of the fixing mechanism (4). Four laser rangefinders (52) are provided, and the four laser rangefinders (52) are respectively mounted on four outer sides of the mounting seat (51). The six-axis mechanical arm (53) is mounted on the other end of the mounting seat (51). The cutting nozzle (54) is mounted on the other end of the six-axis mechanical arm (53). The water pipe (55) is mounted on the other end of the cutting nozzle (54). Three positioning blocks (56) are provided, and the three positioning blocks (56) are all mounted on the middle part of the outer surface of the water pipe (55). The water pump (57) is mounted on the other end of the water pipe (55), and the water pump (57) is mounted on the lower part of the outer wall of the water storage tank (6).

2. The pipe waterjet cutting machine according to claim 1, characterized in that: A water tank (6) is installed at the bottom end of the base (1), a control panel (7) is installed on one side of the outer wall of the water tank (6), a water inlet pipe (8) is installed on the upper part of one end of the water tank (6), and a metal pipe (9) is installed on the outer surface of the fixing mechanism (4).

3. The pipe waterjet cutting machine according to claim 1, characterized in that: The laser rangefinder (52), the six-axis mechanical arm (53) and the water pump (57) are all electrically connected to the control panel (7), and both sides of the outer surface of the water delivery pipe (55) are arranged as folding structures.

4. The pipe waterjet cutting machine according to claim 1, characterized in that: The adjustment mechanism (3) comprises a moving frame (31), a short screw (32), a long screw (33), a driving motor (34) and an adjustment frame (35); the short screw (32) is mounted between inner walls on both sides of the moving frame (31); the long screw (33) is mounted on the lower part of the outer surface of the moving frame (31); and the long screw (33) is mounted between inner walls on both sides of the guide groove (2) via a bearing; two driving motors (34) are provided, and the two driving motors (34) are respectively mounted on one end of the short screw (32) and the long screw (33); and the adjustment frame (35) is mounted on the outer surface of the short screw (32).

5. The pipe waterjet cutting machine according to claim 4, characterized in that: The adjustment frame (35) comprises a fixed frame (351), an electric telescopic rod (352), an adjustment block (353) and a limit frame (354); the fixed frame (351) is mounted on the middle part of the outer surface of the short screw rod (32); the electric telescopic rod (352) is mounted on the top end of the fixed frame (351); the adjustment block (353) is mounted on the bottom end of the electric telescopic rod (352); and the limit frame (354) is mounted on the bottom inner wall of the fixed frame (351).

6. The pipe waterjet cutting machine according to claim 5, characterized in that: The electric telescopic rod (352) and the driving motor (34) are both electrically connected to the control panel (7); the adjustment block (353) is configured as a cross-shaped structure; and the moving frame (31) is configured as a convex-shaped structure.

7. The pipe waterjet cutting machine according to claim 1, characterized in that: The fixing mechanism (4) comprises a fixing box (41), a limiting groove (42), an extension frame (43), a fixing plate (44), a driver (45) and a first bevel gear (46); the fixing box (41) is mounted on one end of the adjusting block (353); a plurality of limiting grooves (42) are provided, and the plurality of limiting grooves (42) are respectively opened on four outer sides of the fixing box (41); the extension frame (43) is mounted between two inner walls of the fixing box (41); four fixing plates (44) are provided, and the four fixing plates (44) are respectively mounted on four outer sides of the extension frame (43); the driver (45) is mounted at the middle of the bottom end of the fixing box (41); the first bevel gear (46) is mounted at the output end of the driver (45), and the first bevel gear (46) is mounted on the bottom inner wall of the fixing box (41) through a bearing.

8. The pipe waterjet cutting machine according to claim 7, characterized in that: The stretching frame (43) comprises a forward and reverse screw rod (431), a second bevel gear (432), an adjustment plate (433) and a support frame (434); the forward and reverse screw rod (431) is installed between the inner walls of both sides of the fixed box (41) via a bearing; the second bevel gear (432) is installed at the middle of the outer surface of the forward and reverse screw rod (431); two adjustment plates (433) are provided, and the two adjustment plates (433) are respectively installed on both sides of the outer surface of the forward and reverse screw rod (431); a plurality of support frames (434) are provided, and the plurality of support frames (434) are respectively installed on the outer surfaces of the two adjustment plates (433) via a connecting seat, and the other ends of the plurality of support frames (434) are installed on the inner side of the corresponding fixed plate (44) via the connecting seat.

9. The pipe waterjet cutting machine according to claim 8, characterized in that: The second bevel gear (432) is meshed with the first bevel gear (46), the support frame (434) is configured as an H-shaped structure, the driver (45) is electrically connected to the control panel (7), and a curved rubber pad is installed at one end of the fixing plate (44) close to the metal pipe (9).

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