Automatic coating device for rust prevention of PC steel bar
By designing an automatic coating device, the problem of low spraying efficiency caused by manual inspection and rust cleaning was solved, realizing automated rust cleaning and rust-preventive liquid spraying, and improving the production efficiency of PC steel bars.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XUZHOU SHUNTAI NEW MATERIAL TECH CO LTD
- Filing Date
- 2025-06-18
- Publication Date
- 2026-06-16
AI Technical Summary
In existing technology, workers need to first check whether there is rust on the outer wall of the steel bar. If rust is found, it needs to be cleaned manually, which leads to low efficiency of the spraying operation and becomes a key link that restricts the production progress.
Design an automatic coating device for rust prevention of PC steel bars, including a grinding table, a feeding table, a spraying table, a grinding sleeve, an electric push rod, a spray head, and a coating machine. The electric push rod drives the steel bar to rub and remove rust in the grinding sleeve, and the spray head sprays rust-preventive liquid.
It enables automatic cleaning of rust on the surface of steel bars before spraying, improving spraying efficiency and optimizing production schedule.
Smart Images
Figure CN224358711U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of PC steel bar technology, specifically relating to an automatic coating device for rust prevention of PC steel bars. Background Technology
[0002] As a key material for prestressed concrete structures, PC steel bars play a core role in various building and infrastructure projects due to their high strength, high durability, and ease of construction. They are an important choice for improving structural performance and economy in modern engineering construction. Through temperature-controlled tempering treatment, PC steel bars achieve high strength and good ductility, with a yield strength of over 1420MPa and a tensile strength exceeding 1570MPa.
[0003] To improve the rust resistance of PC steel bars, rust inhibitors are typically sprayed onto their outer walls to isolate them from air and prevent corrosion, thereby optimizing their performance. However, currently, during the spraying process, workers must first inspect each steel bar for rust, and if rust is found, it must be manually removed. This inspection and manual rust removal process is time-consuming, resulting in low overall efficiency of the PC steel bar spraying operation and becoming a key factor restricting production progress. Utility Model Content
[0004] The purpose of this invention is to provide an automatic coating device for rust prevention of PC steel bars, aiming to solve the problem that in current spraying operations, workers must first check the outer wall of each steel bar for rust, and if rust is found, it must be manually cleaned. This inspection and manual rust removal process is time-consuming, resulting in low efficiency of the overall PC steel bar spraying operation and becoming a key problem restricting production progress.
[0005] To achieve the above objectives, this utility model provides the following technical solution: an automatic coating device for rust prevention of PC steel bars, including a grinding table, a feeding table connected to one side of the grinding table, and a spraying table connected to the other side of the grinding table;
[0006] A grinding sleeve is installed on the grinding table, and a layer of grinding roll is adhered to the inner wall of the grinding sleeve. An electric push rod is installed on the surface of the feeding table. A ring is installed on the surface of the spraying table, and four nozzles are installed through the outer wall of the ring. The interfaces of the four nozzles are all connected to the connecting pipe, and the other end of the connecting pipe is connected to the feeding end of the coating machine.
[0007] In order to enable the telescopic end of the electric push rod to clamp one end of the PC steel rod to be polished, as an automatic coating device for rust prevention of PC steel rods according to this utility model, preferably, a clamping plate is fixedly installed on the telescopic end of the top of the electric push rod. The center of the clamping plate and the center of the polishing sleeve are located on the same horizontal line, and the diameter of the clamping plate is smaller than the inner diameter of the polishing sleeve.
[0008] In order to enable the grinding sleeve to be movably mounted on the grinding table, as an automatic coating device for rust prevention of PC steel bars according to this utility model, preferably, both ends of the grinding sleeve are fixedly connected to the outer wall of the inner ring of a bearing seat, the bottom of the bearing seat is mounted on the surface of the grinding table, and a through hole is opened at the center end of the inner ring of the bearing seat.
[0009] In order to enable the grinding sleeve to grind the PC steel rod inside by rotating, so as to remove the rust on the outer wall of the PC steel rod, as an automatic coating device for rust prevention of PC steel rod of this utility model, preferably, a driven plate is fixedly installed on the outer wall of the center end of the grinding sleeve, and two C-shaped limiting rings are respectively provided on both sides of the driven plate. The outer wall of the opening end of the limiting ring is welded to the outer wall of the opening end of the grinding sleeve.
[0010] In order to enable the drive motor to be mounted on the grinding table to drive the grinding sleeve to rotate, as an automatic coating device for rust prevention of PC steel bars according to this utility model, preferably, a synchronous belt is mounted on the surface of the driven plate, the other end of the synchronous belt is connected to the output end of the drive motor, and the drive motor is mounted on the bottom of the grinding table.
[0011] In order to reduce the splashing of waste residue from the grinding of PC steel bars onto the spraying station, as an automatic coating device for rust prevention of PC steel bars according to this utility model, preferably, a protective plate is welded to the surface of the connection end between the spraying station and the grinding station, and a circular hole is opened through the center end of the protective plate.
[0012] The horizontal line containing the center of the circular hole is at the same position as the center of the ring sleeve and the through hole of the bearing seat.
[0013] Compared with the prior art, the beneficial effects of this utility model are:
[0014] The coated PC steel rod is mounted on the telescopic end of the electric push rod via a clamp. Then, the outer wall switch of the electric push rod is activated, causing the electric push rod to move the PC steel rod inside the grinding sleeve. At this time, the grinding sleeve will rotate rapidly under the action of the drive motor, so that the grinding roll on the inner wall of the grinding sleeve will rub against the PC steel rod, thereby cleaning the rust on the surface of the PC steel rod.
[0015] As the electric push rod continuously pushes the PC steel bar forward, the PC steel bar eventually enters the ring. At this point, the coating machine sprays rust-preventive liquid onto the outer wall of the PC steel bar through the nozzle. The coated PC steel bar is then removed by the staff.
[0016] In summary, the cooperation between the above structures during use can automatically clean the rust on the surface of PC steel bars before spraying, thereby improving overall work efficiency and production progress. Attached Figure Description
[0017] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:
[0018] Figure 1 This is a schematic diagram of the left-side structure provided in an embodiment of this application.
[0019] Figure 2 This is a schematic diagram of the right-side structure provided for an embodiment of this application.
[0020] Figure 3 This is a schematic diagram of the bottom mounting structure of the grinding table provided in an embodiment of this application.
[0021] Figure 4 This is a schematic diagram of the surface mounting structure of the grinding table provided in an embodiment of this application.
[0022] In the diagram: 1. Grinding table; 2. Feeding table; 3. Spraying table; 31. Protective plate; 32. Round hole; 4. Electric push rod; 41. Clamping plate; 5. Grinding sleeve; 51. Bearing seat; 52. Limiting ring; 53. Driven disc; 54. Synchronous belt; 55. Drive motor; 6. Ring sleeve; 7. Spray nozzle; 8. Connecting pipe; 9. Coating machine. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0024] Please see Figure 1-4 The present invention provides the following technical solution: an automatic coating device for rust prevention of PC steel bars, including a grinding table 1, a feeding table 2 connected to one side of the grinding table 1, and a spraying table 3 connected to the other side of the grinding table 1.
[0025] A grinding sleeve 5 is installed on the grinding table 1. A layer of grinding roll is adhered to the inner wall of the grinding sleeve 5. When the grinding sleeve 5 is used, it will be adapted to a PC steel rod of the corresponding size, and the PC steel rod will come into contact with the grinding roll on the inner wall of the grinding sleeve 5 after it is inside the grinding sleeve 5.
[0026] If the rust on the PC steel bar is too thick, it can be pre-treated manually first. After the treatment is completed, the surface can be fully polished by the mechanism in this solution.
[0027] An electric push rod 4 is installed on the surface of the feeding table 2, and a ring 6 is installed on the surface of the spraying table 3. Four nozzles 7 are installed through the outer wall of the ring 6. The interfaces of the four nozzles 7 are connected to the connecting pipe 8, and the other end of the connecting pipe 8 is connected to the feeding end of the coating machine 9.
[0028] In operation, the PC steel rod to be coated is mounted on the telescopic end of the electric push rod 4 via the clamp 41. As the electric push rod 4 extends and retracts, it gradually pushes the PC steel rod into the grinding sleeve 5. Once inside the grinding sleeve 5, the rotating sleeve uses its internal grinding rollers to grind away rust from the outer wall of the PC steel rod. After grinding, the PC steel rod gradually enters the ring 6 under the action of the electric push rod 4. At this point, the coating machine 9 sprays rust inhibitor onto the outer wall of the PC steel rod through the nozzle 7. The operator then removes the coated PC steel rod and waits for the rust inhibitor to solidify on its surface.
[0029] Preferably, a chuck 41 is fixedly installed on the telescopic end of the top of the electric push rod 4. The center of the chuck 41 and the center of the grinding sleeve 5 are located on the same horizontal line, and the diameter of the chuck 41 is smaller than the inner diameter of the grinding sleeve 5.
[0030] In practical use, the maximum extension length of the electric push rod 4 is greater than the maximum lateral length between the grinding table 1 and the spraying table 3, so that the electric push rod 4 can effectively push the PC steel rod to be ground into the ring 6.
[0031] Preferably, the two ends of the grinding sleeve 5 are fixedly connected to the outer wall of the inner ring of a bearing seat 51, the bottom of the bearing seat 51 is mounted on the surface of the grinding table 1, and a through hole is provided at the center end of the inner ring of the bearing seat 51.
[0032] In actual use, the telescopic end of the electric push rod 4 can smoothly enter the interior of the grinding sleeve 5 without contacting the grinding roll on the inner wall of the grinding sleeve 5.
[0033] Preferably, a driven plate 53 is fixedly installed on the outer wall of the center end of the grinding sleeve 5, and two C-shaped limiting rings 52 are respectively provided on both sides of the driven plate 53. The outer wall of the opening end of the limiting ring 52 is welded to the outer wall of the opening end of the grinding sleeve 5.
[0034] In practical use, the limiting ring 52 can restrict the PC steel rod inside the grinding sleeve 5, thereby preventing the PC steel rod from excessively displacing due to excessive vibration during the grinding process, thus affecting the overall grinding effect.
[0035] Preferably, a timing belt 54 is mounted on the surface of the driven disc 53, and the other end of the timing belt 54 is connected to the output end of the drive motor 55, which is mounted on the bottom of the grinding table 1.
[0036] In practical use, the drive motor 55 is connected to an external power source and started via an external power switch. When the drive motor 55 rotates, it drives the driven disc 53 to rotate via the synchronous belt 54. The rotation of the driven disc 53 causes the grinding sleeve 5 to grip and grind. At this time, the grinding sleeve 5 rotates in place on both sides of the bearing seats 51, thus grinding the PC steel rod inside.
[0037] A protective plate 31 is welded to the surface of the connection end between the spraying table 3 and the grinding table 1, and a round hole 32 is opened through the center end of the protective plate 31.
[0038] The PC steel rod enters the spraying station 3 area through the round hole 32 on the protective plate 31. As the PC steel rod moves continuously, it gradually enters the ring 6 and is positioned between the four nozzles 7. In this way, the rust-preventive liquid sprayed simultaneously from the four nozzles 7 can be successfully sprayed onto the outer wall of the PC steel rod, thereby completing the rust-preventive spraying operation on the outer wall of the PC steel rod.
[0039] The horizontal line containing the center of the circular hole 32 is at the same position as the center of the ring sleeve 6 and the through hole of the bearing seat 51.
[0040] The coated PC steel rod is mounted on the telescopic end of the electric push rod 4 via the clamp 41. Then, the outer wall switch of the electric push rod 4 is activated, causing the electric push rod 4 to move the PC steel rod inside the grinding sleeve 5. At this time, the grinding sleeve 5 will rotate rapidly under the action of the drive motor 55, so that the grinding roll on the inner wall of the grinding sleeve 5 will rub against the PC steel rod, thereby cleaning the rust on the surface of the PC steel rod.
[0041] When the PC steel rod is being ground inside the grinding sleeve 5, the resulting residue will splash outwards. At this time, the protective plate 31 on one side of the spraying station 3 will effectively block most of the residue from splashing onto the spraying area of the spraying station 3, so as to ensure the cleanliness of the surface of the spraying station 3.
[0042] As the electric push rod 4 continuously pushes the PC steel rod forward, the PC steel rod will eventually enter the ring 6. At this time, under the action of the coating machine 9, the anti-rust liquid will be sprayed onto the outer wall of the PC steel rod through the nozzle 7. The coated PC steel rod is then removed by the staff.
[0043] In summary, the cooperation between the above-mentioned structures allows for the automatic removal of rust from the surface of PC steel bars before spraying, thereby improving the subsequent spraying effect.
[0044] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. An automatic coating device for rust prevention of PC steel bars, comprising a grinding table (1), characterized in that, One side of the grinding table (1) is connected to the feeding table (2), and the other side of the grinding table (1) is connected to the spraying table (3). A grinding sleeve (5) is installed on the grinding table (1). A layer of grinding roll is adhered to the inner wall of the grinding sleeve (5). An electric push rod (4) is installed on the surface of the feeding table (2). A ring sleeve (6) is installed on the surface of the spraying table (3). Four nozzles (7) are installed through the outer wall of the ring sleeve (6). The interfaces of the four nozzles (7) are all connected to the connecting pipe (8). The other end of the connecting pipe (8) is connected to the feeding end of the coating machine (9).
2. The automatic coating device for rust prevention of PC steel bars according to claim 1, characterized in that: A chuck (41) is fixedly installed on the telescopic end of the electric push rod (4). The center of the chuck (41) and the center of the grinding sleeve (5) are located on the same horizontal line, and the diameter of the chuck (41) is smaller than the inner diameter of the grinding sleeve (5).
3. The automatic coating device for rust prevention of PC steel bars according to claim 1, characterized in that: The two ends of the grinding sleeve (5) are respectively fixedly connected to the outer wall of the inner ring of a bearing seat (51). The bottom of the bearing seat (51) is installed on the surface of the grinding table (1). A through hole is opened at the center end of the inner ring of the bearing seat (51).
4. The automatic coating device for rust prevention of PC steel bars according to claim 1, characterized in that: A driven plate (53) is fixedly installed on the outer wall of the center end of the grinding sleeve (5). Two C-shaped limiting rings (52) are respectively provided on both sides of the driven plate (53). The outer wall of the opening end of the limiting ring (52) is welded to the outer wall of the opening end of the grinding sleeve (5).
5. The automatic coating device for rust prevention of PC steel bars according to claim 4, characterized in that: A timing belt (54) is mounted on the surface of the driven disk (53), and the other end of the timing belt (54) is connected to the output end of the drive motor (55), which is mounted on the bottom of the grinding table (1).
6. The automatic coating device for rust prevention of PC steel bars according to claim 1, characterized in that: A protective plate (31) is welded to the surface of the connection end between the spraying station (3) and the grinding station (1), and a round hole (32) is opened through the center end of the protective plate (31).
7. An automatic coating device for rust prevention of PC steel bars according to claim 6, characterized in that: The horizontal line where the center of the circular hole (32) is located is at the same position as the center of the through hole of the ring sleeve (6) and the bearing seat (51).