A kind of steel pipe curved surface self-adapting inkjet printer

Abstract

This invention belongs to the field of steel pipe production technology. It discloses a steel pipe curved surface adaptive inkjet printer, comprising an inkjet printing mechanism, a moving mechanism, and a support. The inkjet printing mechanism is mounted on the moving mechanism, which is used to move on the support and drive the inkjet printing mechanism to move towards the steel pipe to be inkjet printed. By setting up a rotating component and a turning component, when inkjet printing is required along the circumference of the steel pipe, a second motor is started to drive a second annular plate to rotate. The second annular plate drives a first connecting sleeve to rotate through a second limiting port and a second connecting rod. The first connecting sleeve drives a moving column and a contact wheel to rotate 90 degrees, making the contact wheel perpendicular to the steel pipe. This causes two electromagnets to be energized and repel each other, allowing a hexagonal prism to be inserted into a hexagonal slot. A third motor is then started to drive a first rotating shaft and a contact wheel to rotate. The first contact wheel drives the steel pipe to rotate, and simultaneously, the inkjet printing mechanism performs inkjet printing, achieving the purpose of inkjet printing along the circumference of the steel pipe.

Description

Technical Field

[0001] This invention relates to the field of steel pipe production technology, and more specifically, to an adaptive inkjet printer for curved steel pipe surfaces. Background Technology

[0002] With the continuous improvement of industrial automation, the demand for inkjet printing technology in the steel pipe manufacturing industry is growing. Inkjet printing on steel pipes requires the use of specialized inkjet printers. Existing inkjet printers include a support mechanism and an inkjet printing mechanism. The steel pipe to be printed is placed on the support mechanism, and the inkjet printing mechanism prints the code on the steel pipe to achieve automated inkjet printing operation.

[0003] The steel pipe is placed below the inkjet printer, and the steel pipe moves at a uniform speed. The existing inkjet printer can print along the axial direction of the steel pipe. However, when there is a need to print along the circumference of the steel pipe, the existing inkjet printer is difficult to print along the circumference of the steel pipe, which limits the use of the inkjet printer. The circumferential printing can only be performed by manually adjusting the position of the inkjet printer nozzle or changing the fixture. This is not only inefficient, but also prone to blurry, misaligned or missed printing due to inaccurate alignment. Summary of the Invention

[0004] To address the problems in the background art, this invention proposes an adaptive inkjet printer for curved steel pipe surfaces.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a steel pipe curved surface adaptive inkjet printer, comprising an inkjet printing mechanism, a moving mechanism, and a support, wherein the inkjet printing mechanism is mounted on the moving mechanism, the moving mechanism is used to move on the support and to drive the inkjet printing mechanism to move toward the steel pipe to be inkjet printed, and further comprising:

[0006] The first fixed ring plate is slidably connected to the bracket via a horizontal column, which is locked to the bracket by a locking mechanism. The steel pipe to be printed is located in the middle of the first fixed ring plate. The first fixed ring plate is provided with an adaptive component for automatically adapting to the size of the steel pipe to be printed. The adaptive component includes four contact wheels that are arranged on the outside of the steel pipe to be printed and parallel to the steel pipe.

[0007] The first fixed ring plate is provided with a rotating component for driving the four contact wheels to rotate 90 degrees. The first fixed ring plate is also provided with a rotating component for driving one of the contact wheels to rotate so as to drive the steel pipe to be printed to rotate.

[0008] Furthermore, the adaptive component includes four hollow cylinders fixed to a first fixed ring plate. The four hollow cylinders are evenly distributed on the outside of the steel pipe to be inkjet printed. A movable column is inserted inside each hollow cylinder. A U-shaped plate is fixed to one end of each movable column. A first rotating shaft is rotatably connected inside the U-shaped plate. A contact wheel is fixed to the outer wall of the first rotating shaft. A first support plate is fixed to one side wall of each hollow cylinder. A first motor is fixed to the first support plate. A second rotating shaft is fixed to the output shaft of the first motor. One end of the second rotating shaft is rotatably connected to one side wall of the hollow cylinder. A first gear is fixed to the outer wall of the second rotating shaft. A first circular ring plate is rotatably connected to the first support plate. A first arc-shaped rack that meshes with the first gear is fixed to the outer wall of the first circular ring plate. Four inclined first limiting holes are opened on the first circular ring plate. A second connecting sleeve is rotatably connected to the outer wall of the movable column. A first connecting rod is fixed to the outer wall of the second connecting sleeve. The first connecting rod is slidably connected in the corresponding first limiting holes.

[0009] Furthermore, the rotating assembly includes a second support plate fixed to one side wall of the hollow cylinder, a second motor fixed to the second support plate, a third rotating shaft fixed to the output shaft of the second motor, one end of the third rotating shaft rotatably connected to one side wall of the hollow cylinder, a second gear fixed to the outer wall of the third rotating shaft, a second annular plate rotatably connected to the second support plate, a second arc-shaped rack meshing with the second gear fixed to the outer wall of the second annular plate, four inclined second limiting holes opened on the second annular plate, a first connecting sleeve provided on the outer wall of the moving column, a vertical rod fixed to the first connecting sleeve, the first connecting sleeve rotatably connected to one end of the hollow cylinder through the vertical rod, a slider fixed to the inner wall of the first connecting sleeve, a sliding groove opened on the moving column, the first connecting sleeve slidably connected to the moving column through the slider and the sliding groove, a second connecting rod fixed to the outer wall of the first connecting sleeve, the second connecting rods being respectively inserted into the corresponding second limiting holes, and the angle between the second connecting rod and the steel pipe to be printed is forty-five degrees.

[0010] Furthermore, the rotating assembly includes a third support plate fixedly connected to one end of a first connecting rod, a third motor fixedly connected to the third support plate, a housing fixedly connected to the output shaft of the third motor, a hexagonal prism disposed inside the housing, a hexagonal slot provided at one end of the first rotating shaft, and the hexagonal prism and the hexagonal slot being adapted to each other and at the same height.

[0011] Furthermore, the rotating assembly also includes a movable plate slidably connected to the inner wall of the housing, the hexagonal prism is fixedly connected to the movable plate, a first spring is fixedly connected between the movable plate and the inner wall of the housing, and electromagnets are fixedly connected to both the movable plate and the inner wall of the housing.

[0012] Furthermore, retractable supports are provided on both sides of the bracket, and two drive mechanisms are installed on the supports through mounting holes. The drive mechanisms are provided with a first roller that contacts the steel pipe to be printed.

[0013] Furthermore, a second fixed ring plate is slidably connected to the support via a connecting seat. The connecting seat is locked to the support via a locking mechanism. Multiple sliding columns are slidably inserted into the second fixed ring plate. One end of each sliding column is fixedly connected to an mounting plate. A sponge block that contacts the steel pipe to be inkjet-printed is fixedly connected to the mounting plate.

[0014] Furthermore, an L-shaped plate is fixedly connected to the sliding column, and a second roller is provided at one end of the L-shaped plate to contact the steel pipe to be printed. A second spring is fixedly connected between the L-shaped plate and the second fixed ring plate.

[0015] The technical effects and advantages of the steel pipe curved surface adaptive inkjet printer of the present invention:

[0016] (1) By setting up a rotating component and a rotating component, when it is necessary to spray code along the circumference of the steel pipe, start the second motor to drive the third rotating shaft and the second gear to rotate. The second gear drives the second ring plate to rotate through the second arc rack. The second ring plate drives the first connecting sleeve to rotate through the second limit port and the second connecting rod. The first connecting sleeve drives the moving column and the contact wheel to rotate through the slider and the slide groove. The first connecting sleeve rotates ninety degrees so that the contact wheel is perpendicular to the steel pipe, so that the two electromagnets are energized and repel each other, so that the hexagonal prism is inserted into the hexagonal slot. Start the third motor to drive the first rotating shaft and the contact wheel to rotate. The first contact wheel can drive the steel pipe to rotate. At the same time, the spray code mechanism sprays code to achieve the purpose of spraying code along the circumference of the steel pipe.

[0017] (2) By setting an adaptive component, when it is necessary to print on steel pipes of different sizes, the position of the first fixed ring plate is adjusted so that the steel pipe is located in the middle of the first fixed ring plate. When it is necessary to position the steel pipe, the first motor is started to drive the second rotating shaft and the first gear to rotate. The first gear drives the first ring plate to rotate through the first arc rack. The first ring plate drives the four contact wheels to move towards the steel pipe simultaneously through the first limit port and the first connecting rod to position the steel pipe, thereby achieving the purpose of adapting the printing mechanism to steel pipes of different sizes. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the first partial three-dimensional structure in this invention;

[0020] Figure 3 This is a cross-sectional schematic diagram of the hollow cylinder and shell in this invention;

[0021] Figure 4For the present invention Figure 2 Enlarged view of point A in the middle;

[0022] Figure 5 This is a schematic diagram of the separation structure of the vertical column and the first connecting sleeve in this invention;

[0023] Figure 6 This is a schematic diagram of the second partial three-dimensional structure in the present invention;

[0024] Figure 7 For the present invention Figure 6 Enlarged diagram of point B in the middle.

[0025] In the picture:

[0026] 1. Inkjet printing mechanism; 2. Moving mechanism; 3. Support; 4. First fixed ring plate; 5. Hollow cylinder; 6. Moving column; 7. U-shaped plate; 8. First rotating shaft; 9. Contact wheel; 10. First support plate; 11. First motor; 12. Second rotating shaft; 13. First gear; 14. First circular ring plate; 15. First arc-shaped rack; 16. First limiting port; 17. First connecting rod; 18. Second support plate; 19. Second motor; 20. Third rotating shaft; 21. Second gear; 22. Second circular ring plate; 23. Second arc-shaped rack; 24. 25. Second limiting port; 26. Second connecting rod; 27. First connecting sleeve; 28. Vertical rod; 29. ​​Slider; 30. Slide rail; 31. Third support plate; 32. Third motor; 33. Housing; 34. Hexagonal prism; 35. Hexagonal groove; 36. Moving plate; 37. First spring; 38. Electromagnet; 39. Support; 40. Drive mechanism; 41. First roller; 42. Second fixed ring plate; 43. Sliding column; 44. Mounting plate; 45. Sponge block; 46. L-shaped plate; 47. Second roller; 48. Second connecting sleeve; 49. Second spring. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. 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 of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0028] Reference Figures 1-7 An adaptive inkjet printer for curved steel pipes includes an inkjet printing mechanism 1, a moving mechanism 2, and a support 3. The inkjet printing mechanism 1 is mounted on the moving mechanism 2. The moving mechanism 2 is used to move on the support 3 and to drive the inkjet printing mechanism 1 to move toward the steel pipe to be inkjet printed. The printer also includes:

[0029] The first fixed ring plate 4 is slidably connected to the bracket 3 via a horizontal column. The horizontal column is locked to the bracket 3 via a locking mechanism. The steel pipe to be printed is located in the middle of the first fixed ring plate 4. The first fixed ring plate 4 is provided with an adaptive component for automatically adapting to the size of the steel pipe to be printed. The adaptive component includes four contact wheels 9 arranged on the outside of the steel pipe to be printed and parallel to the steel pipe.

[0030] The first fixed ring plate 4 is provided with a rotating assembly for driving four contact wheels 9 to rotate 90 degrees. The first fixed ring plate 4 is provided with a rotating assembly for driving one of the contact wheels 9 to rotate so as to drive the steel pipe to be printed to rotate.

[0031] In use, the steel pipe to be printed is passed through the first fixed ring plate 4. The height of the first fixed ring plate 4 is adjusted so that the steel pipe is located in the middle of the first fixed ring plate 4. The locking mechanism is used to lock the first fixed ring plate 4 to adapt to the size of the steel pipe. The four contact wheels 9 are driven to move by the adaptive component, so that the four contact wheels 9 simultaneously position and clamp the steel pipe. When the steel pipe is axially printed, the steel pipe is axially transported. The steel pipe will drive the contact wheel 9 to rotate. The printing mechanism 1 is driven to contact the surface of the steel pipe by the moving mechanism 2. The printing mechanism 1 prints during the transport of the steel pipe to achieve the purpose of axial printing. When the steel pipe needs to be circumferentially printed, the four contact wheels 9 are driven to rotate 90 degrees at the same time by the rotating component. The rotating component drives one of the contact wheels 9 to rotate. This contact wheel 9 can drive the steel pipe to rotate. During the rotation, the printing mechanism 1 prints during the rotation to achieve the purpose of printing around the steel pipe.

[0032] Reference Figure 2 and Figure 3The adaptive component includes four hollow cylinders 5 fixed to a first fixed ring plate 4. The four hollow cylinders 5 are evenly distributed on the outside of the steel pipe to be printed. A movable column 6 is inserted inside the hollow cylinder 5. A U-shaped plate 7 is fixed to one end of the movable column 6. A first rotating shaft 8 is rotatably connected inside the U-shaped plate 7. A contact wheel 9 is fixed to the outer wall of the first rotating shaft 8. A first support plate 10 is fixed to one side wall of the hollow cylinder 5. A first motor 11 is fixed to the first support plate 10. A second rotating shaft 12 is fixed to the output shaft of the first motor 11. One end of the second rotating shaft 12 is rotatably connected to one side wall of the hollow cylinder 5. A first gear 13 is fixed to the outer wall of the second rotating shaft 12. A first circular ring plate 14 is rotatably connected to the first support plate 10. A first arc-shaped rack 15 that meshes with the first gear 13 is fixed to the outer wall of the first circular ring plate 14. Four inclined first limiting holes 16 are opened on the first circular ring plate 14. A second connecting sleeve is rotatably connected to the outer wall of the movable column 6. 47. The outer wall of the second connecting sleeve 47 is fixedly connected to the first connecting rod 17. The first connecting rod 17 is slidably connected to the corresponding first limiting port 16. After adjusting the position of the first fixed ring plate 4, the first motor 11 is started. The first motor 11 drives the second rotating shaft 12 to rotate. The second rotating shaft 12 drives the first gear 13 to rotate. The first gear 13 drives the first circular ring plate 14 to rotate through the first arc rack 15. The first circular ring plate 14 drives the first connecting rod 17 to move through the first limiting port 16. The first connecting rod 17 drives the contact wheel 9 and the moving column 6 to move through the second connecting sleeve 47, so that the four contact wheels 9 move towards the steel pipe at the same time. The four contact wheels 9 abut against the outer wall of the steel pipe at the same time to achieve positioning and clamping of the steel pipe. The adaptive component can adapt to steel pipes of different sizes. During the steel pipe transportation process, the steel pipe can drive the contact wheel 9 to rotate. After positioning and clamping, the steel pipe moves and is axially marked by the marking mechanism 1.

[0033] Reference Figure 2 , Figure 3 , Figure 4 and Figure 5The rotating assembly includes a second support plate 18 fixed to one side wall of the hollow cylinder 5, a second motor 19 fixed to the second support plate 18, a third rotating shaft 20 fixed to the output shaft of the second motor 19, one end of the third rotating shaft 20 rotatably connected to one side wall of the hollow cylinder 5, a second gear 21 fixed to the outer wall of the third rotating shaft 20, a second annular plate 22 rotatably connected to the second support plate 18, a second arc-shaped rack 23 meshing with the second gear 21 fixed to the outer wall of the second annular plate 22, and four inclined second limiting holes 24 opened on the second annular plate 22. The moving column 6... A first connecting sleeve 26 is provided on the outer wall, and a vertical rod 27 is fixedly connected to the first connecting sleeve 26. The first connecting sleeve 26 is rotatably connected to one end of the hollow cylinder 5 through the vertical rod 27. A slider 28 is fixedly connected to the inner wall of the first connecting sleeve 26. A sliding groove 29 is provided on the moving column 6. The first connecting sleeve 26 is slidably connected to the moving column 6 through the slider 28 and the sliding groove 29. A second connecting rod 25 is fixedly connected to the outer wall of the first connecting sleeve 26. The second connecting rod 25 is inserted into the corresponding second limiting port 24. The angle between the second connecting rod 25 and the steel pipe to be printed is forty-five degrees. The steel pipe needs to be circumferentially marked to stop its conveying motion. Before the contact wheel 9 contacts the steel pipe through the adaptive component, the second motor 19 is started. The second motor 19 drives the third rotating shaft 20 to rotate, which in turn drives the second gear 21 to rotate. The second gear 21 drives the second annular plate 22 to rotate through the second arc-shaped rack 23. The second annular plate 22 drives the second connecting rod 25 to rotate through the second limiting port 24. The second connecting rod 25 drives the first connecting sleeve 26 to rotate around the central axis of the moving column 6. The first connecting sleeve 26 rotates through the vertical rod 27 in the hollow cylinder. 5. The first connecting sleeve 26 rotates, and the first connecting sleeve 26 drives the moving column 6 and the contact wheel 9 to rotate through the slider 28 and the slide groove 29. The contact wheel 9 rotates 90 degrees and becomes perpendicular to the steel pipe. Then, the adaptive component drives the four contact wheels 9 to move towards the steel pipe and abut against it. During this process, the moving column 6 also moves closer to the steel pipe, while the first connecting sleeve 26 remains in the same position. The first connecting sleeve 26 slides on the surface of the moving column 6 through the slider 28, causing the contact wheel 9 to rotate and drive the steel pipe to rotate. During the rotation of the steel pipe, the inkjet printing mechanism 1 prints ink, achieving the purpose of printing ink on the circumference of the steel pipe.

[0034] Reference Figure 3The rotating assembly includes a first connecting rod 17 with one end fixed to a third support plate 30. A third motor 31 is fixed to the third support plate 30. The output shaft of the third motor 31 is fixed to a housing 32. A hexagonal prism 33 is provided inside the housing 32. A hexagonal slot 34 is provided at one end of the first rotating shaft 8. The hexagonal prism 33 and the hexagonal slot 34 are adapted to each other and are at the same height. When the contact wheel 9 is driven to rotate 90 degrees by the rotating assembly, and then the contact wheel 9 is driven to contact the steel pipe by the adaptive assembly, the first connecting rod 17 can drive the third support plate 30 to move during the movement. The third support plate 30 drives the first connecting rod 17 to move. The movement of the three motors 31, housing 32, and hexagonal prism 33 is achieved because the hexagonal prism 33 is adapted to the hexagonal slot 34 and is at the same height. When the contact wheel 9 contacts the surface of the steel pipe, the hexagonal prism 33 is directly opposite the hexagonal slot 34. When it is necessary to drive the contact wheel 9 to rotate to drive the steel pipe to rotate, so that the hexagonal prism 33 can be inserted, the third motor 31 is started. The third motor 31 drives the housing 32 to rotate, the housing 32 drives the hexagonal prism 33 to rotate, and the hexagonal prism 33 drives the first rotating shaft 8 to rotate through the hexagonal slot 34. The first rotating shaft 8 drives the contact wheel 9 to rotate, and the rotation of the contact wheel 9 can drive the steel pipe to rotate.

[0035] Reference Figure 3 The rotating assembly also includes a movable plate 35 slidably connected to the inner wall of the housing 32. A hexagonal prism 33 is fixedly connected to the movable plate 35. A first spring 36 is fixedly connected between the movable plate 35 and the inner wall of the housing 32. Electromagnets 37 are fixedly connected to both the movable plate 35 and the inner wall of the housing 32. When it is necessary to insert the hexagonal prism 33 into the hexagonal slot 34, the two electromagnets 37 are energized. The energized electromagnets 37 generate a repulsive force, thereby pushing the movable plate 35 to move. The first spring 36 is stretched, and the movable plate 35 drives the hexagonal prism 33 to move, so that the hexagonal prism 33 is inserted into the hexagonal slot 34. When it is necessary to remove the hexagonal prism 33 from the hexagonal slot 34, the two electromagnets 37 are de-energized. Under the action of the first spring 36, the hexagonal prism 33 leaves the hexagonal slot 34.

[0036] Reference Figure 1 and Figure 6 Both sides of the bracket 3 are provided with retractable supports 38. Two drive mechanisms 39 are installed on the supports 38 through mounting holes. The drive mechanisms 39 are provided with first rollers 40 that contact the steel pipe to be printed. The height of the supports 38 can be adjusted according to the size of the steel pipe. When it is necessary to print circumferentially on the steel pipe, the drive mechanism 39 can drive the first rollers 40 to rotate 90 degrees so that the first rollers 40 can cooperate with the circumferential printing.

[0037] Reference Figure 6A second fixed ring plate 41 is slidably connected to the support 38 via a connecting seat. The connecting seat is locked to the support 38 by a locking mechanism. Multiple sliding columns 42 are slidably inserted into the second fixed ring plate 41. One end of the sliding column 42 is fixedly connected to an mounting plate 43. A sponge block 44 that contacts the steel pipe to be printed is fixedly connected to the mounting plate 43. The position of the second fixed ring plate 41 is adjusted according to the size of the steel pipe, and the second fixed ring plate 41 is locked by the locking mechanism. Multiple sponge blocks 44 form a circle, which can clean the surface of the steel pipe during the steel pipe transportation process and prevent dust and impurities from affecting the printing quality.

[0038] Reference Figure 7 An L-shaped plate 45 is fixedly connected to the sliding column 42. One end of the L-shaped plate 45 is provided with a second roller 46 that contacts the steel pipe to be printed. A second spring 48 is fixedly connected between the L-shaped plate 45 and the second fixed ring plate 41. Since the second roller 46 is always in contact with the surface of the steel pipe, the multiple sponge blocks 44 can always form a circle that is suitable for the size of the steel pipe. If the size of the steel pipe becomes smaller, under the action of the second spring 48, the second roller 46 moves towards the center of the second fixed ring plate 41. The second roller 46 will drive the sponge blocks 44 to move through the L-shaped plate 45 and the sliding column 42. The sponge blocks 44 are always in contact with the surface of the steel pipe.

[0039] Working principle: In use, the steel pipe to be printed is passed through the first fixed ring plate 4. The height of the first fixed ring plate 4 is adjusted so that the steel pipe is located in the middle of the first fixed ring plate 4. The locking mechanism is used to lock the first fixed ring plate 4 to adapt to the size of the steel pipe. The four contact wheels 9 are driven to move by the adaptive component, so that the four contact wheels 9 simultaneously position and clamp the steel pipe. When the steel pipe is axially printed, the steel pipe is axially transported. The steel pipe will drive the contact wheel 9 to rotate. The printing mechanism 1 is driven to contact the surface of the steel pipe by the moving mechanism 2. The printing mechanism 1 prints during the transport of the steel pipe to achieve the purpose of axial printing. When the steel pipe needs to be printed circumferentially, the four contact wheels 9 are driven to rotate 90 degrees at the same time by the rotating component. The rotating component drives one of the contact wheels 9 to rotate. This contact wheel 9 can drive the steel pipe to rotate. During the rotation, the printing mechanism 1 prints during the rotation to achieve the purpose of printing in the circumferential direction of the steel pipe.

[0040] After adjusting the position of the first fixed ring plate 4, the first motor 11 is started. The first motor 11 drives the second rotating shaft 12 to rotate. The second rotating shaft 12 drives the first gear 13 to rotate. The first gear 13 drives the first circular ring plate 14 to rotate through the first arc rack 15. The first circular ring plate 14 drives the first connecting rod 17 to move through the first limiting port 16. The first connecting rod 17 drives the contact wheel 9 and the moving column 6 to move through the second connecting sleeve 47, so that the four contact wheels 9 move towards the steel pipe at the same time. The four contact wheels 9 abut against the outer wall of the steel pipe at the same time to achieve positioning and clamping of the steel pipe. The adaptive component can adapt to steel pipes of different sizes. During the steel pipe transportation process, the steel pipe can drive the contact wheel 9 to rotate. After positioning and clamping, the steel pipe moves and is axially printed through the inkjet printing mechanism 1.

[0041] When circumferential coding of the steel pipe is required, the steel pipe's conveying movement is stopped. Before the contact wheel 9 contacts the steel pipe through the adaptive component, the second motor 19 is started. The second motor 19 drives the third rotating shaft 20 to rotate. The third rotating shaft 20 drives the second gear 21 to rotate. The second gear 21 drives the second annular plate 22 to rotate through the second arc-shaped rack 23. The second annular plate 22 drives the second connecting rod 25 to rotate through the second limiting port 24. The second connecting rod 25 drives the first connecting sleeve 26 to rotate around the central axis of the moving column 6. The first connecting sleeve 26 is connected to the hollow section via the vertical rod 27. The cylinder 5 rotates, and the first connecting sleeve 26 drives the moving column 6 and the contact wheel 9 to rotate through the slider 28 and the slide groove 29, so that the contact wheel 9 rotates ninety degrees and becomes perpendicular to the steel pipe. Then, the adaptive component drives the four contact wheels 9 to move towards the steel pipe and abut against it. During this process, the moving column 6 also moves closer to the steel pipe, while the first connecting sleeve 26 remains in the same position. The first connecting sleeve 26 slides on the surface of the moving column 6 through the slider 28, so that the contact wheel 9 rotates and drives the steel pipe to rotate. During the rotation of the steel pipe, the inkjet printing mechanism 1 prints ink to achieve the purpose of printing ink on the circumference of the steel pipe.

[0042] When the contact wheel 9 is driven to rotate 90 degrees by the rotating component, and then driven to contact the steel pipe by the adaptive component, the first connecting rod 17 can drive the third support plate 30 to move during the movement. The third support plate 30 drives the third motor 31, the housing 32 and the hexagonal prism 33 to move. Since the hexagonal prism 33 is adapted to the hexagonal slot 34 and is at the same height, when the contact wheel 9 contacts the surface of the steel pipe, the hexagonal prism 33 is facing the hexagonal slot 34. When it is necessary to drive the contact wheel 9 to rotate to drive the steel pipe to rotate, so that the hexagonal prism 33 is inserted, the third motor 31 is started. The third motor 31 drives the housing 32 to rotate. The housing 32 drives the hexagonal prism 33 to rotate. The hexagonal prism 33 drives the first rotating shaft 8 to rotate through the hexagonal slot 34. The first rotating shaft 8 drives the contact wheel 9 to rotate. The rotation of the contact wheel 9 can drive the steel pipe to rotate.

[0043] When it is necessary to insert the hexagonal prism 33 into the hexagonal slot 34, the two electromagnets 37 are energized. The energized electromagnets 37 generate a repulsive force, which pushes the moving plate 35 to move. The first spring 36 is stretched, and the moving plate 35 drives the hexagonal prism 33 to move, so that the hexagonal prism 33 is inserted into the hexagonal slot 34. When it is necessary to remove the hexagonal prism 33 from the hexagonal slot 34, the two electromagnets 37 are de-energized. Under the action of the first spring 36, the hexagonal prism 33 leaves the hexagonal slot 34.

[0044] The height of the support 38 is adjusted according to the size of the steel pipe. When it is necessary to perform circumferential coding on the steel pipe, the first roller 40 can be driven to rotate 90 degrees through the drive mechanism 39 so that the first roller 40 can cooperate with the circumferential coding.

[0045] The position of the second fixed ring plate 41 is adjusted according to the size of the steel pipe, and the second fixed ring plate 41 is locked by the locking mechanism. Multiple sponge blocks 44 form a circle, which can clean the surface of the steel pipe during the steel pipe transportation process and prevent dust and impurities from affecting the coding quality.

[0046] Since the second roller 46 is always in contact with the surface of the steel pipe, the multiple sponge blocks 44 can always form a circle that fits the size of the steel pipe. If the size of the steel pipe becomes smaller, under the action of the second spring 48, the second roller 46 moves toward the center of the second fixed ring plate 41. The second roller 46 will drive the sponge blocks 44 to move through the L-shaped plate 45 and the sliding column 42. The sponge blocks 44 are always in contact with the surface of the steel pipe.

[0047] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

[0048] In conclusion, the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A steel pipe curved surface adaptive inkjet printer, comprising an inkjet printing mechanism (1), a moving mechanism (2), and a support (3), wherein the inkjet printing mechanism (1) is mounted on the moving mechanism (2), and the moving mechanism (2) is used to move on the support (3) and to drive the inkjet printing mechanism (1) to move toward the steel pipe to be inkjet printed, characterized in that, Also includes: The first fixed ring plate (4) is slidably connected to the bracket (3) by a horizontal column. The horizontal column is locked to the bracket (3) by a locking mechanism. The steel pipe to be printed is located in the middle of the first fixed ring plate (4). The first fixed ring plate (4) is provided with an adaptive component for automatically adapting to the size of the steel pipe to be printed. The adaptive component includes four contact wheels (9) arranged on the outside of the steel pipe to be printed and parallel to the steel pipe. The first fixed ring plate (4) is provided with a rotating assembly for driving four contact wheels (9) to rotate ninety degrees. The first fixed ring plate (4) is provided with a rotating assembly for driving one of the contact wheels (9) to rotate so as to drive the steel pipe to be printed to rotate. The adaptive component includes four hollow cylinders (5) fixed to a first fixed ring plate (4). The four hollow cylinders (5) are evenly distributed on the outside of the steel pipe to be printed. A movable column (6) is inserted inside each hollow cylinder (5). A U-shaped plate (7) is fixed to one end of each movable column (6). A first rotating shaft (8) is rotatably connected inside the U-shaped plate (7). A contact wheel (9) is fixed to the outer wall of the first rotating shaft (8). A first support plate (10) is fixed to one side wall of each hollow cylinder (5). A first motor (11) is fixed to the first support plate (10). A second rotating shaft (12) is fixed to the output shaft of the first motor (11). One end is rotatably connected to one side wall of the hollow cylinder (5), the outer wall of the second rotating shaft (12) is fixedly connected to the first gear (13), the first support plate (10) is rotatably connected to the first ring plate (14), the outer wall of the first ring plate (14) is fixedly connected to the first arc-shaped rack (15) meshing with the first gear (13), the first ring plate (14) is provided with four inclined first limiting ports (16), the outer wall of the moving column (6) is rotatably connected to the second connecting sleeve (47), the outer wall of the second connecting sleeve (47) is fixedly connected to the first connecting rod (17), and the first connecting rod (17) is slidably connected in the corresponding first limiting port (16); The rotating assembly includes a second support plate (18) fixed to one side wall of the hollow cylinder (5), a second motor (19) fixed to the second support plate (18), a third rotating shaft (20) fixed to the output shaft of the second motor (19), one end of the third rotating shaft (20) rotatably connected to one side wall of the hollow cylinder (5), a second gear (21) fixed to the outer wall of the third rotating shaft (20), a second annular plate (22) rotatably connected to the second support plate (18), a second arc-shaped rack (23) meshing with the second gear (21) fixed to the outer wall of the second annular plate (22), and four inclined second limiting holes (24) opened on the second annular plate (22). The moving column (6) The outer wall is provided with a first connecting sleeve (26), and a vertical rod (27) is fixedly connected to the first connecting sleeve (26). The first connecting sleeve (26) is rotatably connected to one end of the hollow cylinder (5) through the vertical rod (27). A slider (28) is fixedly connected to the inner wall of the first connecting sleeve (26). A sliding groove (29) is opened on the moving column (6). The first connecting sleeve (26) is slidably connected to the moving column (6) through the slider (28) and the sliding groove (29). A second connecting rod (25) is fixedly connected to the outer wall of the first connecting sleeve (26). The second connecting rod (25) is respectively inserted into the corresponding second limiting port (24). The angle between the second connecting rod (25) and the steel pipe to be printed is forty-five degrees. The rotating assembly includes a third support plate (30) fixedly connected to one end of the first connecting rod (17), a third motor (31) fixedly connected to the third support plate (30), a housing (32) fixedly connected to the output shaft of the third motor (31), a hexagonal prism (33) provided inside the housing (32), a hexagonal slot (34) provided at one end of the first rotating shaft (8), and the hexagonal prism (33) and the hexagonal slot (34) being adapted to each other and at the same height; The rotating assembly also includes a movable plate (35) slidably connected to the inner wall of the housing (32), the hexagonal prism (33) is fixedly connected to the movable plate (35), a first spring (36) is fixedly connected between the movable plate (35) and the inner wall of the housing (32), and an electromagnet (37) is fixedly connected to both the movable plate (35) and the inner wall of the housing (32).

2. The steel pipe curved surface adaptive inkjet printer according to claim 1, characterized in that, Both sides of the bracket (3) are provided with retractable supports (38). Two drive mechanisms (39) are installed on the supports (38) through mounting holes. The drive mechanisms (39) are provided with a first roller (40) that contacts the steel pipe to be printed.

3. The curved surface self-adaptive inkjet printer for steel pipe according to claim 2, characterized in that, The support (38) is slidably connected to a second fixed ring plate (41) via a connecting seat. The connecting seat is locked to the support (38) by a locking mechanism. Multiple sliding columns (42) are slidably inserted on the second fixed ring plate (41). One end of the sliding column (42) is fixedly connected to an mounting plate (43). A sponge block (44) that contacts the steel pipe to be printed is fixedly connected to the mounting plate (43).

4. The curved surface self-adaptive inkjet printer for steel pipe according to claim 3, characterized in that, An L-shaped plate (45) is fixedly connected to the sliding column (42). One end of the L-shaped plate (45) is provided with a second roller (46) that contacts the steel pipe to be printed. A second spring (48) is fixedly connected between the L-shaped plate (45) and the second fixed ring plate (41).

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