Automatic plastic cap sleeving and sealing mechanism for steel pipe end

Abstract

The utility model relates to steel pipe assembly technical field discloses automatic plastic sealing cap mechanism of steel pipe end, including base, the upper surface rear side fixedly connected with L type support plate of base, the upper surface fixedly connected with first mobile frame of L type support plate, both sides inner wall fixedly connected with two symmetries first ball bearing of first mobile frame, the inner ring common fixed connection of two first ball bearing has screw shaft, the right side surface fixedly connected with first step motor of first mobile frame through bolt, the device passes through the cooperation of screw shaft, first step motor and two mobile frames in first mobile frame of L type support plate, two mobile frames are fixed through first connecting rod, the cooperation of first clamping plate, electric push rod and second clamping plate in rectangular frame, two rectangular frames are fixed by second connecting rod, and the telescopic electric push rod makes two clamping plates clamp steel pipe, and double clamping and fixed connection promote the stability of steel pipe, avoid the shake caused by single clamping.

Description

Technical Field

[0001] This utility model relates to the field of steel pipe assembly technology, and more specifically, to an automatic plastic sealing cap mechanism for steel pipe ends. Background Technology

[0002] Steel pipe assembly is the process of combining steel pipes with other related components according to specific technical requirements and processes to form complete steel pipe products or components that meet the intended use. In the production and application of steel pipes, in order to protect the ends of the steel pipes from damage such as bumps and corrosion during transportation, storage and subsequent use, and also to play a certain sealing role, it is often necessary to put plastic sealing caps on the ends of the steel pipes. For example, there is such a requirement in many scenarios such as steel pipes for construction and steel pipes for industrial fluid transportation. This process is an important link in the steel pipe assembly process to ensure the quality and performance of steel pipes.

[0003] However, most existing steel pipe capping mechanisms use a single clamping device to fix the steel pipe. When applying the cap, they rely solely on a simple pushing structure to place the cap onto the end of the steel pipe, which has certain limitations. Due to the possibility of slight positional deviations in the steel pipe on the clamping device, and the poor stability of the single clamping mechanism, the steel pipe is prone to shaking during the process of pushing the cap. This makes it difficult to accurately place the cap on the predetermined position at the end of the steel pipe, resulting in low capping efficiency. Furthermore, inaccurate capping may affect the protection effect on the end of the steel pipe, increasing unnecessary costs such as rework. Utility Model Content

[0004] (a) Technical problems to be solved In view of the above situation and to overcome the defects of the prior art, this utility model provides an automatic plastic sealing cap mechanism for steel pipe ends, which aims to solve the problems in the background art.

[0005] (II) Technical Solution To achieve the above objectives, this application provides the following technical solution: an automatic plastic sealing cap mechanism for steel pipe ends, comprising a base, an L-shaped support plate fixedly connected to the rear side of the upper surface of the base, a first movable frame fixedly connected to the upper surface of the L-shaped support plate, two symmetrical first ball bearings fixedly connected to the inner walls of both sides of the first movable frame, a threaded shaft fixedly connected to the inner rings of the two first ball bearings, a first stepper motor fixedly connected to the right side of the first movable frame by bolts, two separated movable frames threadedly connected to the outer surface of the threaded shaft, two symmetrical first limiting grooves formed on the inner wall of the first movable frame, a first limiting block fixedly connected to the front and back of each movable frame, a rectangular frame fixedly connected to the bottom end of each movable frame, a first clamping plate fixedly connected to the inner bottom wall of each rectangular frame, an electric push rod fixedly connected to the inner wall of the upper surface of each rectangular frame, and two second... The clamping plates, including two first clamping plates and two second clamping plates, jointly clamp a steel pipe. Four first connecting rods are fixedly connected to one side of the two movable frames that are close to each other. Four second connecting rods are fixedly connected to one side of the two rectangular frames that are close to each other. A capping device is installed on the upper surface of the base to the right of the L-shaped support plate. A mounting frame is fixedly connected to the upper surface of the base to the left of the capping device. A second movable frame is fixedly connected to the upper surface of the mounting frame. Two symmetrical second ball bearings are fixedly connected to the inner wall of the second movable frame. A bidirectional threaded rod is fixedly connected to the inner rings of the two second ball bearings. A second stepper motor is fixedly connected to the front of the second movable frame by bolts. Positioning plates are fixedly connected to the outer surfaces of the two opposite threads of the bidirectional threaded rod. Two symmetrical second limiting grooves are opened on the inner side wall of the second movable frame. Two symmetrical second limiting plates are fixedly connected to the outer surface of each positioning plate.

[0006] The present invention is further configured such that the right end of the threaded shaft extends through to the right side of the first moving frame, the output end of the first stepper motor is fixedly connected to the right end of the threaded shaft, the bottom end of each moving frame extends through to the bottom of the L-shaped support plate, the outer surface of each first limiting block is slidably connected to the inside of the first limiting groove, one end of the bidirectional threaded rod extends through to the outside of the second moving frame, the output end of the second stepper motor is fixedly connected to one end of the bidirectional threaded rod, the outer surface of each second limiting plate is slidably connected to the inside of the second limiting groove, the arc-shaped groove at the top of each positioning plate contacts the outer surface of the steel pipe, and the right end of the steel pipe is coaxial with the assembly end of the capping device.

[0007] The present invention is further configured such that a plurality of stabilizing plates are fixedly connected to the back of the L-shaped support plate, and the bottom surface of each stabilizing plate is fixedly connected to the upper surface of the base.

[0008] The present invention is further configured such that a first balancing groove is provided on the front side of the L-shaped support plate, a first balancing plate is fixedly connected to the back side of each rectangular frame, and the outer surface of each first balancing plate at the end away from the rectangular frame is slidably connected to the interior of the first balancing groove.

[0009] The present invention is further configured such that four symmetrical second balance grooves are provided on the inner sidewall of each rectangular frame, and a second balance plate corresponding to the second balance groove is fixedly connected to the outer surface of each second clamping plate, and the outer surface of each second balance plate is slidably connected to the interior of the second balance groove.

[0010] The present invention is further configured such that two base frames are fixedly connected to the upper surface of the base, and a conical limiting cylinder is fixedly connected to the top of the two base frames together, and the right end of the steel pipe extends through to the right side of the conical limiting cylinder.

[0011] (III) Beneficial Effects Compared with the prior art, the beneficial effects of this utility model are: 1. The structure consists of a threaded shaft in the first movable frame on the L-shaped bracket plate, a first stepper motor, and two movable frames that are fixedly connected by a first connecting rod. The rectangular frame contains a first clamping plate, an electric push rod, and a second clamping plate. The two rectangular frames are fixed by a second connecting rod. The extension and retraction of the electric push rod allows the second clamping plate and the first clamping plate to clamp the steel pipe together. Through the double clamping and fixed connection structure, the stability of the steel pipe can be improved, avoiding the problem of steel pipe shaking caused by single clamping. 2. Through the cooperation of the mounting bracket on the base, the second moving frame, the bidirectional threaded rod, the second stepper motor, and the positioning plate, the second stepper motor drives the bidirectional threaded rod to rotate, which allows the two positioning plates to move along the second limiting groove to fit the surface of the steel pipe for secondary positioning. In addition, the conical limiting cylinder supported by the base frame guides and limits the right end of the steel pipe, which can correct the slight positional deviation of the steel pipe and ensure that the right end of the steel pipe is coaxial with the assembly end of the capping equipment. This avoids the situation where the plastic cap is difficult to be accurately put on in the predetermined position, improves the capping efficiency, ensures the protection effect on the end of the steel pipe, and reduces subsequent rework costs. Attached Figure Description

[0012] Figure 1 This is a three-dimensional overall structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the second clamping plate of this utility model; Figure 3 This is a three-dimensional structural diagram of the positioning plate of this utility model; Figure 4 This is a three-dimensional sectional view of the second movable frame of this utility model.

[0013] In the diagram: 1. Base; 2. Second clamping plate; 3. Second connecting rod; 4. Rectangular frame; 5. Base frame; 6. Second moving frame; 7. Mounting frame; 8. Second stepper motor; 9. Bidirectional threaded rod; 10. Positioning plate; 11. Capping device; 12. Conical limiting cylinder; 13. First stepper motor; 14. First connecting rod; 15. Moving frame; 16. First limiting block; 17. Threaded shaft; 18. First limiting groove; 19. First moving frame; 20. First balancing groove; 21. Stabilizing plate; 22. L-shaped bracket plate; 23. Steel pipe; 24. First ball bearing; 25. Electric push rod; 26. First clamping plate; 27. Second balancing plate; 28. Second balancing groove; 29. ​​First balancing plate; 30. Second limiting groove; 31. Second limiting plate; 32. Second ball bearing. Detailed Implementation

[0014] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0015] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0016] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0017] Please see Figures 1-4The system includes a base 1, an L-shaped support plate 22 fixedly connected to the rear side of the upper surface of the base 1, a first movable frame 19 fixedly connected to the upper surface of the L-shaped support plate 22, two symmetrical first ball bearings 24 fixedly connected to the inner walls of both sides of the first movable frame 19, and a threaded shaft 17 fixedly connected to the inner rings of the two first ball bearings 24. A first stepper motor 13 is fixedly connected to the right side of the first movable frame 19 by bolts. Two separated movable frames 15 are threadedly connected to the outer surface of the threaded shaft 17. Two symmetrical first limiting grooves 18 are opened on the inner wall of the first movable frame 19. A first limiting block 16 is fixedly connected to the front and back of each movable frame 15. A rectangular frame 4 is fixedly connected to the bottom end of each movable frame 15. A first clamping plate 26 is fixedly connected to the inner bottom wall of each rectangular frame 4. An electric push rod 25 is fixedly connected to the inner wall of the upper surface of each rectangular frame 4. Two second clamping plates 2 are fixedly connected to the telescopic end of each electric push rod 25. The two first clamping plates 26 and The two second clamping plates 2 together clamp the steel pipe 23. The two moving frames 15 are connected to four first connecting rods 14 on their adjacent sides. The two rectangular frames 4 are connected to four second connecting rods 3 on their adjacent sides. The upper surface of the base 1 is provided with a capping device 11 on the right side of the L-shaped support plate 22. The upper surface of the base 1 is connected to a mounting frame 7 on the left side of the capping device 11. The upper surface of the mounting frame 7 is connected to a second moving frame 6. The inner wall of the second moving frame 6 is connected to two symmetrical second ball bearings 32. The inner rings of the two second ball bearings 32 are connected to a bidirectional threaded rod 9. The front of the second moving frame 6 is connected to a second stepper motor 8 by bolts. The outer surfaces of the two opposite threads of the bidirectional threaded rod 9 are both connected to positioning plates 10. The inner side wall of the second moving frame 6 has two symmetrical second limiting grooves 30. The outer surface of each positioning plate 10 is connected to two symmetrical second limiting plates 31.

[0018] Specifically, the first movable frame 19 is supported by the L-shaped bracket plate 22. The first ball bearing 24 inside the first movable frame 19 limits the threaded shaft 17. When the first stepper motor 13 drives the threaded shaft 17 to rotate, it can drive the two movable frames 15 connected by threads on the outer surface to move. The first limiting block 16 cooperates with the first limiting groove 18 to prevent the movable frame 15 from shifting. The movable frame 15 drives the rectangular frame 4 at the bottom to move synchronously. The first clamping plate 26 inside the rectangular frame 4 carries the steel pipe 23. The electric push rod 25 extends and retracts to drive the second clamping plate 2 to move closer to or away from the first clamping plate 26, thereby clamping or loosening the steel pipe 23. The first connecting rod 14 enhances the connection stability of the two moving frames 15, the second connecting rod 3 improves the structural strength of the two rectangular frames 4, the capping device 11 on the base 1 is used for applying plastic caps, the mounting frame 7 supports the second moving frame 6, the second ball bearing 32 in the second moving frame 6 limits the bidirectional threaded rod 9, the second stepper motor 8 drives the bidirectional threaded rod 9 to rotate, so that the positioning plate 10 connected to the outer surface moves, the second limiting plate 31 cooperates with the second limiting groove 30 to prevent the positioning plate 10 from shifting, realize the clamping and positioning of the steel pipe 23, prepare for applying plastic caps, and solve the problem of poor single clamping stability of the existing mechanism.

[0019] Please see Figures 1-4 The right end of the threaded shaft 17 extends to the right side of the first moving frame 19. The output end of the first stepper motor 13 is fixedly connected to the right end of the threaded shaft 17. The bottom end of each moving frame 15 extends to the bottom of the L-shaped bracket plate 22. The outer surface of each first limiting block 16 is slidably connected to the inside of the first limiting groove 18. One end of the bidirectional threaded rod 9 extends to the outside of the second moving frame 6. The output end of the second stepper motor 8 is fixedly connected to one end of the bidirectional threaded rod 9. The outer surface of each second limiting plate 31 is slidably connected to the inside of the second limiting groove 30. The arc-shaped groove at the top of each positioning plate 10 contacts the outer surface of the steel pipe 23. The right end of the steel pipe 23 is coaxial with the assembly end of the capping device 11.

[0020] Specifically, the right end of the threaded shaft 17 passes through the first moving frame 19 and is fixed to the output end of the first stepper motor 13, ensuring that the first stepper motor 13 can stably drive the threaded shaft 17 to rotate. The bottom end of the moving frame 15 passes through the L-shaped bracket plate 22, ensuring that the rectangular frame 4 can move smoothly with the moving frame 15. The first limiting block 16 slides in the first limiting groove 18, further improving the stability of the moving frame 15. One end of the bidirectional threaded rod 9 passes through the second moving frame 6 and is fixed to the output end of the second stepper motor 8, so that the second stepper motor 8 can accurately drive the bidirectional threaded rod 9 to rotate. The second limiting plate 31 slides in the second limiting groove 30, ensuring that the positioning plate 10 does not deviate when moving. The arc groove at the top of the positioning plate 10 contacts the outer surface of the steel pipe 23, which can better fit the steel pipe 23 to achieve positioning. The right end of the steel pipe 23 is coaxial with the assembly end of the capping device 11, ensuring that the plastic cap can be accurately fitted onto the predetermined position at the end of the steel pipe 23, solving the problem of inaccurate capping position in the existing mechanism.

[0021] Please see Figures 1-4 The back of the L-shaped support plate 22 is fixedly connected with multiple stabilizing plates 21. The bottom surface of each stabilizing plate 21 is fixedly connected to the upper surface of the base 1. The front of the L-shaped support plate 22 is provided with a first balancing groove 20. The back of each rectangular frame 4 is fixedly connected with a first balancing plate 29. The outer surface of each first balancing plate 29 at the end away from the rectangular frame 4 is slidably connected to the inside of the first balancing groove 20.

[0022] Specifically, the bottom surface of the stabilizing plate 21 on the back of the L-shaped support plate 22 is fixed to the base 1. The triangular stabilizing structure enhances the support strength of the L-shaped support plate 22 and prevents it from tilting or swaying when bearing the weight of the mechanism. The first balance groove 20 on the front of the L-shaped support plate 22 cooperates with the first balance plate 29 on the back of the rectangular frame 4. When the rectangular frame 4 moves with the moving frame 15, the first balance plate 29 slides in the first balance groove 20, providing additional support for the rectangular frame 4 and preventing it from shifting due to the weight of the steel pipe 23. This further improves the stability of the overall mechanism and solves the swaying problem caused by insufficient support structure in the existing mechanism.

[0023] Please see Figures 1-4 Each rectangular frame 4 has four symmetrical second balance grooves 28 on its inner sidewall. Each second clamping plate 2 has a second balance plate 27 corresponding to the second balance groove 28 fixedly connected to its outer surface. The outer surface of each second balance plate 27 is slidably connected to the inside of the second balance groove 28.

[0024] Specifically, the second balance groove 28 on the inner sidewall of the rectangular frame 4 corresponds to the second balance plate 27 on the outer surface of the second clamping plate 2. When the electric push rod 25 drives the second clamping plate 2 to move, the second balance plate 27 slides in the second balance groove 28, limiting the movement direction of the second clamping plate 2 and preventing the second clamping plate 2 from tilting or deviating during movement. This ensures that the second clamping plate 2 can accurately cooperate with the first clamping plate 26 to clamp the steel pipe 23, improving the accuracy of clamping the steel pipe 23 and solving the problem of easy component displacement during clamping in existing mechanisms.

[0025] Please see Figures 1-4 Two base frames 5 are fixedly connected to the upper surface of the base 1. The top of the two base frames 5 are fixedly connected to a conical limiting cylinder 12. The right end of the steel pipe 23 extends through to the right side of the conical limiting cylinder 12.

[0026] Specifically, the conical limiting cylinder 12 is fixed together by the tops of the two base frames 5 on the base 1. The base frame 5 provides stable support for the conical limiting cylinder 12. The right end of the steel pipe 23 passes through the conical limiting cylinder 12. The conical structure of the conical limiting cylinder 12 can guide the right end of the steel pipe 23. Even if there is a slight positional deviation of the steel pipe 23, it can be corrected by the guiding action of the conical limiting cylinder 12, ensuring that the right end of the steel pipe 23 always remains coaxial with the assembly end of the capping device 11. This further improves the accuracy of the plastic capping, reduces subsequent rework costs, and solves the problem of low capping efficiency caused by the deviation of the steel pipe 23 in the existing mechanism.

[0027] Working principle: In use, the L-shaped support plate 22 fixed to the base 1 supports the first movable frame 19. The first ball bearing 24 inside the first movable frame 19 limits the threaded shaft 17. The first stepper motor 13 drives the threaded shaft 17 to rotate, causing the two movable frames 15 connected by threads on the outer surface to move. The first limiting block 16 slides in the first limiting groove 18 to prevent the movable frame 15 from shifting. The movable frame 15 drives the rectangular frame 4 at the bottom to move synchronously. The first clamping plate 26 inside the rectangular frame 4 carries the steel pipe 23. The electric push rod 25 extends and retracts to drive the second clamping plate 2 to cooperate with the first clamping plate 26 to clamp the steel pipe 23. The first connecting rod 14 enhances the connection stability of the movable frame 15, and the second connecting rod 3 improves the structural strength of the rectangular frame 4. At the same time, the mounting bracket 7 on the base 1 supports the second movable frame 6. The second ball bearing 32 inside the second movable frame 6 limits the bidirectional threaded rod 9. The second stepper motor 8 drives the bidirectional threaded rod 9 to rotate, causing the positioning plate 10 connected to the outer surface to move. The second limiting plate 31 slides within the second limiting groove 30 to prevent the positioning plate 10 from shifting. The arc-shaped groove at the top of the positioning plate 10 fits against the outer surface of the steel pipe 23 for auxiliary positioning. The fixed connection between the threaded shaft 17 and the first stepper motor 13, and the bidirectional threaded rod 9 and the second stepper motor 8, ensures stable power transmission. The right end of the steel pipe 23 is coaxial with the assembly end of the capping device 11. In addition, the stabilizing plate 21 on the back of the L-shaped bracket plate 22 enhances the support strength. The first balance plate 29 slides within the first balance groove 20 to improve the stability of the rectangular frame 4. The second balance plate 27 slides within the second balance groove 28 to ensure the precise movement of the second clamping plate 2. The base frame 5 on the base 1 supports the conical limiting cylinder 12. The right end of the steel pipe 23 passes through the conical limiting cylinder 12 to guide and correct deviations. Finally, the steel pipe 23 is stably clamped and precisely positioned, ensuring that the capping device 11 accurately places the plastic cap on the predetermined position at the end of the steel pipe 23, thus solving the problems of poor stability and inaccurate capping position of the existing single clamping mechanism.

[0028] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. An automatic plastic sealing capping mechanism for steel pipe ends, comprising a base (1), characterized in that: An L-shaped support plate (22) is fixedly connected to the rear side of the upper surface of the base (1). A first movable frame (19) is fixedly connected to the upper surface of the L-shaped support plate (22). Two symmetrical first ball bearings (24) are fixedly connected to the inner walls of both sides of the first movable frame (19). The inner rings of the two first ball bearings (24) are fixedly connected to a threaded shaft (17). A first stepper motor (13) is fixedly connected to the right side of the first movable frame (19) by bolts. Two separate movable frames (15) are threadedly connected to the outer surface of the threaded shaft (17). The inner wall of the moving frame (19) has two symmetrical first limiting grooves (18). The front and back of each of the moving frames (15) are fixedly connected to a first limiting block (16). The bottom end of each of the moving frames (15) is fixedly connected to a rectangular frame (4). The inner bottom wall of each of the rectangular frames (4) is fixedly connected to a first clamping plate (26). The inner wall of the upper surface of each of the rectangular frames (4) is fixedly connected to an electric push rod (25). The telescopic end of each of the electric push rods (25) is fixedly connected to two second clamping plates (2). The two first clamping plates (26) and two The second clamping plate (2) has a steel pipe (23) clamped inside. The two movable frames (15) are fixedly connected to four first connecting rods (14) on their adjacent sides. The two rectangular frames (4) are fixedly connected to four second connecting rods (3) on their adjacent sides. The upper surface of the base (1) is provided with a capping device (11) on the right side of the L-shaped support plate (22). The upper surface of the base (1) is fixedly connected to a mounting frame (7) on the left side of the capping device (11). The upper surface of the mounting frame (7) is fixedly connected to a second movable frame (6). The inner wall of the movable frame (6) is fixedly connected to two symmetrical second ball bearings (32), and the inner rings of the two second ball bearings (32) are fixedly connected to a bidirectional threaded rod (9). The front of the second movable frame (6) is fixedly connected to a second stepper motor (8) by bolts. The outer surfaces of the two opposite threads of the bidirectional threaded rod (9) are fixedly connected to positioning plates (10). The inner side wall of the second movable frame (6) has two symmetrical second limiting grooves (30), and the outer surface of each positioning plate (10) is fixedly connected to two symmetrical second limiting plates (31).

2. The automatic plastic sealing capping mechanism for steel pipe ends according to claim 1, characterized in that: The right end of the threaded shaft (17) extends through to the right side of the first moving frame (19). The output end of the first stepper motor (13) is fixedly connected to the right end of the threaded shaft (17). The bottom end of each moving frame (15) extends through to the bottom of the L-shaped bracket plate (22). The outer surface of each first limiting block (16) is slidably connected to the inside of the first limiting groove (18). One end of the bidirectional threaded rod (9) extends through to the outside of the second moving frame (6). The output end of the second stepper motor (8) is fixedly connected to one end of the bidirectional threaded rod (9). The outer surface of each second limiting plate (31) is slidably connected to the inside of the second limiting groove (30). The arc groove at the top of each positioning plate (10) contacts the outer surface of the steel pipe (23). The right end of the steel pipe (23) is coaxial with the assembly end of the capping device (11).

3. The automatic plastic sealing capping mechanism for steel pipe ends according to claim 1, characterized in that: The back of the L-shaped support plate (22) is fixedly connected with a plurality of stabilizing plates (21), and the bottom surface of each stabilizing plate (21) is fixedly connected to the upper surface of the base (1).

4. The automatic plastic sealing capping mechanism for steel pipe ends according to claim 1, characterized in that: The front of the L-shaped support plate (22) is provided with a first balance groove (20), and the back of each rectangular frame (4) is fixedly connected with a first balance plate (29). The outer surface of the end of each first balance plate (29) away from the rectangular frame (4) is slidably connected to the inside of the first balance groove (20).

5. The automatic plastic sealing capping mechanism for steel pipe ends according to claim 1, characterized in that: Each of the rectangular frames (4) has four symmetrical second balance grooves (28) on its inner sidewall. Each of the second clamping plates (2) has a second balance plate (27) corresponding to the second balance groove (28) fixedly connected to its outer surface. The outer surface of each second balance plate (27) is slidably connected to the inside of the second balance groove (28).

6. The automatic plastic sealing capping mechanism for steel pipe ends according to claim 1, characterized in that: Two base frames (5) are fixedly connected to the upper surface of the base (1). The top of the two base frames (5) are fixedly connected to a conical limiting cylinder (12). The right end of the steel pipe (23) extends through to the right side of the conical limiting cylinder (12).

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