Outer plastic coating device for steel pipe machining
By using a motor-driven bidirectional threaded rod and gear rack system, combined with a lifting plate structure, the problems of uneven coating and complex operation in traditional steel pipe plastic coating processes have been solved. This enables stable clamping and uniform plastic coating of steel pipes of different diameters, improving production efficiency and quality.
Patent Information
- Application Number
- CN202520332251.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-27
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-02-27
AI Technical Summary
Traditional steel pipe plastic coating processes suffer from uneven coating, poor adhesion, low production efficiency, complex operation, and lack of effective adaptability to steel pipes of different diameters. This can lead to displacement or skew of the steel pipes during processing, affecting production efficiency and quality.
The system employs a motor-driven bidirectional threaded rod, a gear and rack system, and a lifting plate structure to achieve stable clamping and flexible adjustment of steel pipes of different diameters. Combined with the sliding and rotation of the spray nozzle, it ensures the uniformity and precision of the coating process.
It improves the uniformity and processing efficiency of steel pipe coating, reduces the complexity of manual operation, enhances the working efficiency and product quality of the production line, and ensures the stability and efficiency of the processing.
Smart Images

Figure CN223931694U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of steel pipe processing technology, and in particular to a steel pipe processing external plastic coating device. Background Technology
[0002] In the field of steel pipe processing, plastic coating is an important surface treatment method widely used in pipelines, construction, transportation, and other industries to enhance the corrosion resistance, wear resistance, and service life of steel pipes. However, traditional steel pipe plastic coating processes have several problems, including uneven coating, poor coating adhesion, low production efficiency, and complex operation. They typically employ a single clamping method, lacking effective adaptability for steel pipes of different diameters. This can lead to the steel pipe not being securely and stably fixed in the processing equipment, especially when processing steel pipes of different sizes. The clamping force is often not evenly distributed, potentially causing displacement or skew during processing, resulting in uneven coating. This requires manual adjustment and intervention from operators, increasing operational complexity and the risk of errors. The lack of a flexible adjustment mechanism can easily affect production efficiency, leading to unstable processing and even rework or substandard quality, necessitating improvements. Utility Model Content
[0003] The purpose of this utility model is to solve the technical problems mentioned in the background art.
[0004] This utility model adopts the following technical solution: a steel pipe processing and external plastic coating device, including a workbench, a motor fixedly installed inside the workbench, a bidirectional threaded rod fixedly installed at the output end of the motor, a sliding plate threadedly connected to the surface of the bidirectional threaded rod, a frame plate fixedly installed on the side of the sliding plate, a motor A fixedly installed on the surface of the frame plate, a mounting bracket fixedly installed at the output end of the motor A, a circular plate fixedly installed on the side of the mounting bracket, a motor B fixedly installed on the inner side of the mounting bracket, a gear fixedly installed at the output end of the motor B, a rack top plate meshing with the surface of the gear, an anti-slip block fixedly installed on the upper surface of the rack top plate, a motor C fixedly installed on the side of the workbench, a rotating rod fixedly installed at the output end of the motor C, a sliding seat threadedly connected to the surface of the rotating rod, and a spray head fixedly installed inside the sliding seat.
[0005] Preferably, one end of the bidirectional threaded rod is rotatably connected to the inner side of the worktable, and the surface of the sliding plate is slidably connected to the inner side of the worktable. Here, the steel pipe can be centered and fixed by sliding the sliding plate.
[0006] Preferably, the side of the circular plate is rotatably connected to the interior of the sliding plate, the surface of the gear is rotatably connected to the interior of the mounting bracket, and one side of the rack top plate is slidably connected to the interior of the circular plate. Here, motor A can drive the mounting bracket to rotate while simultaneously driving the circular plate to rotate, causing the steel pipe to rotate during processing. The sliding of the rack top plate inside the circular plate can fix steel pipes of different diameters.
[0007] Preferably, one end of the rotating rod is rotatably connected to one side of the worktable, and one side of the sliding seat is slidably connected to the side of the worktable. Here, the sliding of the sliding seat can drive the spray head to perform plastic coating on the steel pipe.
[0008] Preferably, a motor D is fixedly mounted on the upper surface of the workbench, a rotating rod is fixedly mounted on the output end of the motor D, a lifting plate is threadedly connected to the surface of the rotating rod, and a tube-laying plate is fixedly mounted on the surface of the lifting plate. Here, when the motor D drives the rotating rod to rotate, the lifting plate drives the tube-laying plate and the steel pipe to rise and fall synchronously, which can drive the steel pipe to rise and fall to a suitable position for fixing.
[0009] Preferably, the bottom end of the rotating rod is rotatably connected to the inner side of the worktable, and the side of the lifting plate is slidably connected to the interior of the worktable. Here, it is ensured that the steel pipe maintains a suitable fixed position during the fixing process.
[0010] Compared with the prior art, the advantages and positive effects of this utility model are as follows:
[0011] 1. This utility model incorporates a mounting frame, a circular plate, a motor B, a gear, a rack top plate, and an anti-slip block. The motor B drives the gear, which meshes with the rack top plate, enabling stable clamping of the steel pipe during processing. Flexible adjustments are made according to the needs of steel pipes of different diameters to ensure precise fixing during processing, improving the uniformity of the plastic coating and enhancing the overall processing accuracy and efficiency. Automatic adjustment reduces the tediousness of manual operation, improves production line efficiency and product quality, and makes the processing smoother and more efficient.
[0012] 2. This utility model incorporates a motor D, a rotating rod, a lifting plate, and a tube-laying plate. When the motor D drives the rotating rod to rotate, the lifting plate causes the tube-laying plate and the steel pipe to rise and fall synchronously. This ensures that the steel pipe is securely fixed in the required position during the plastic coating process, improves the clamping stability of the steel pipe, simplifies the operation process, avoids the complexity of manual intervention, improves processing efficiency and coating uniformity, and guarantees processing quality. Attached Figure Description
[0013] Figure 1 This utility model provides an overall structural schematic diagram of a steel pipe processing and external plastic coating device;
[0014] Figure 2 This utility model provides an exploded view of the overall structure of a steel pipe processing and external plastic coating device;
[0015] Figure 3 This utility model provides a schematic diagram of the circular plate of a steel pipe processing external plastic coating device;
[0016] Figure 4 This utility model provides a schematic diagram of the pipe plate placement area of a steel pipe processing and external plastic coating device.
[0017] Legend:
[0018] 1. Workbench; 2. Motor; 3. Two-way threaded rod; 4. Sliding plate; 5. Frame plate; 6. Motor A; 7. Mounting bracket; 8. Circular plate; 9. Motor B; 10. Gear; 11. Rack top plate; 12. Anti-slip block; 13. Motor C; 14. Rotating rod; 15. Sliding seat; 16. Nozzle; 17. Motor D; 18. Rotating rod; 19. Lifting plate; 20. Pipe placement plate. Detailed Implementation
[0019] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.
[0020] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.
[0021] Example 1
[0022] Please see Figure 1-3This utility model provides a technical solution: a steel pipe processing and external plastic coating device, including a workbench 1, a motor 2 fixedly installed inside the workbench 1, a bidirectional threaded rod 3 fixedly installed at the output end of the motor 2, a sliding plate 4 threadedly connected to the surface of the bidirectional threaded rod 3, a frame plate 5 fixedly installed on the side of the sliding plate 4, a motor A6 fixedly installed on the surface of the frame plate 5, a mounting bracket 7 fixedly installed at the output end of the motor A6, a circular plate 8 fixedly installed on the side of the mounting bracket 7, a motor B9 fixedly installed on the inner side of the mounting bracket 7, a gear 10 fixedly installed at the output end of the motor B9, a rack top plate 11 meshing with the surface of the gear 10, and a fixed upper surface of the rack top plate 11. An anti-slip block 12 is installed, and a motor C13 is fixedly installed on the side of the workbench 1. A rotating rod 14 is fixedly installed at the output end of the motor C13. A sliding seat 15 is threadedly connected to the surface of the rotating rod 14. A nozzle 16 is fixedly installed inside the sliding seat 15. The bidirectional threaded rod 3 is driven to rotate by the motor 2, which drives the sliding plate 4 to slide within the workbench 1. The steel pipe is clamped and rotated by the frame plate 5 and the mounting bracket 7. The motor B9 can adjust the clamping force according to the diameter of the steel pipe through the meshing of the gear 10 and the rack top plate 11, ensuring the stability of the steel pipe during the coating process. The nozzle 16 can evenly coat the surface of the steel pipe through the movement of the sliding seat 15. To improve the uniformity and quality of the coating, one end of the bidirectional threaded rod 3 is rotatably connected to the inner side of the worktable 1, and the surface of the sliding plate 4 is slidably connected to the inner side of the worktable 1. The rotatable connection of the bidirectional threaded rod 3 allows it to rotate smoothly, driving the sliding plate 4 to slide within the worktable 1. The sliding connection between the sliding plate 4 and the worktable 1 ensures that the sliding plate 4 remains stable during movement, preventing offset or shaking, thereby achieving precise centering and fixing of the steel pipe. The side of the circular plate 8 is rotatably connected to the interior of the sliding plate 4, the surface of the gear 10 is rotatably connected to the interior of the mounting bracket 7, and one side of the rack top plate 11 is slidably connected to the interior of the circular plate 8. The drive mounting bracket 7 of the motor A6 can rotate, driving the steel pipe to rotate, ensuring uniform coating. The meshing of the gear 10 and the rack top plate 11 allows the rack top plate 11 to slide inside the circular plate 8, thereby adjusting the clamping range according to steel pipes of different diameters, improving the applicability and flexibility of the device. One end of the rotating rod 14 is rotatably connected to one side of the worktable 1, and one side of the sliding seat 15 is slidably connected to the side of the worktable 1. The rotating rod 14 is driven to rotate by the motor C13, driving the sliding seat 15 to slide along the side of the worktable 1. At the same time, the spray nozzle 16 fixed inside the sliding seat 15 can coat the entire surface of the steel pipe, avoiding coating omissions or uneven thickness.
[0023] Example 2
[0024] Please see Figure 4A motor D17 is fixedly installed on the upper surface of the workbench 1. A rotating rod 18 is fixedly installed at the output end of the motor D17. A lifting plate 19 is threadedly connected to the surface of the rotating rod 18. A tube placement plate 20 is fixedly installed on the surface of the lifting plate 19. The motor D17 drives the lifting plate 19 to move up and down through the rotating rod 18, which drives the tube placement plate 20 and the steel pipe to rise and fall synchronously. The height of the steel pipe can be adjusted according to the coating requirements to ensure that the distance between the steel pipe and the nozzle 16 is appropriate, thereby improving the uniformity and efficiency of coating. The bottom end of the rotating rod 18 is rotatably connected to the inner side of the workbench 1, and the side of the lifting plate 19 is slidably connected to the inside of the workbench 1 to ensure that the steel pipe maintains a proper fixed position during the fixing process.
[0025] Working principle: First, the steel pipe is placed on the pipe mounting plate 20. Motor D17 is started, driving the rotating rod 18 to rotate, which in turn causes the lifting plate 19 to rise and fall vertically, moving the steel pipe to the preset processing height for centering, clamping, and fixing. Then, motor 2 drives the bidirectional threaded rod 3 to rotate, causing the sliding plates 4 on both sides to slide in center, and simultaneously moving the frame plate 5 and mounting bracket 7 to complete the initial centering and positioning of the steel pipe. Subsequently, motor B9 starts, driving the gear 10 to mesh with the rack top plate 11, and the anti-slip block 12 to press tightly against the inner side of the steel pipe, automatically adjusting the clamping according to the steel pipe diameter. Force is applied to ensure a stable fixation. Motor A6 drives the mounting bracket 7 and the circular plate 8 to rotate the steel pipe at a uniform speed. At the same time, motor C13 drives the rotating rod 14 to rotate, causing the sliding seat 15 to move along the axial direction of the steel pipe, which in turn drives the spray nozzle 16 to spray a plastic layer evenly. By controlling the speed and direction of motors A6 and C13, the thickness of the plastic coating on the steel pipe surface can be precisely controlled. After the coating is completed, motor B9 rotates in the opposite direction to release the clamp, motor D17 drives the pipe plate 20 to descend and reset, and the bidirectional threaded rod 3 rotates in the opposite direction to separate the sliding plate 4 and remove the finished steel pipe.
[0026] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.
Claims
1. A steel pipe processing and external plastic coating device, comprising a workbench (1), characterized in that: A motor (2) is fixedly installed inside the workbench (1). A bidirectional threaded rod (3) is fixedly installed at the output end of the motor (2). A sliding plate (4) is threadedly connected to the surface of the bidirectional threaded rod (3). A frame plate (5) is fixedly installed on the side of the sliding plate (4). A motor A (6) is fixedly installed on the surface of the frame plate (5). A mounting bracket (7) is fixedly installed at the output end of the motor A (6). A circular plate (8) is fixedly installed on the side of the mounting bracket (7). An electric motor is fixedly installed on the inner side of the mounting bracket (7). Machine B (9), the output end of the motor B (9) is fixedly mounted with a gear (10), the surface of the gear (10) is meshed with a rack top plate (11), the upper surface of the rack top plate (11) is fixedly mounted with an anti-slip block (12), the side of the workbench (1) is fixedly mounted with a motor C (13), the output end of the motor C (13) is fixedly mounted with a rotating rod (14), the surface of the rotating rod (14) is threadedly connected with a sliding seat (15), and the inside of the sliding seat (15) is fixedly mounted with a nozzle (16).
2. The steel pipe processing external plastic coating device according to claim 1, characterized in that: One end of the bidirectional threaded rod (3) is rotatably connected to the inner side of the worktable (1), and the surface of the sliding plate (4) is slidably connected to the inner side of the worktable (1).
3. The steel pipe processing external plastic coating device according to claim 1, characterized in that: The side of the circular plate (8) is rotatably connected to the interior of the sliding plate (4), the surface of the gear (10) is rotatably connected to the interior of the mounting bracket (7), and one side of the rack top plate (11) is slidably connected to the interior of the circular plate (8).
4. The steel pipe processing external plastic coating device according to claim 1, characterized in that: One end of the rotating rod (14) is rotatably connected to one side of the worktable (1), and one side of the sliding seat (15) is slidably connected to the side of the worktable (1).
5. The steel pipe processing external plastic coating device according to claim 1, characterized in that: A motor D (17) is fixedly installed on the upper surface of the workbench (1). A rotating rod (18) is fixedly installed at the output end of the motor D (17). A lifting plate (19) is threadedly connected to the surface of the rotating rod (18). A tube plate (20) is fixedly installed on the surface of the lifting plate (19).
6. The steel pipe processing external plastic coating device according to claim 5, characterized in that: The bottom end of the rotating rod (18) is rotatably connected to the inner side of the worktable (1), and the side of the lifting plate (19) is slidably connected to the interior of the worktable (1).