Rust removal device used before painting of steel door plate

Abstract

The utility model provides a derusting device before painting of a steel door plank, which comprises a rack and a controller, a moving mechanism is arranged at the bottom of the rack, a first turntable is rotatably arranged on the moving mechanism, a first hydraulic rod is oppositely arranged on the top surface of the first turntable, the first hydraulic rod is connected with a first pressing plate, a first U-shaped frame is arranged on the side surface of the moving mechanism, and a bearing is arranged at the top of the moving mechanism; a first motor is arranged on the first U-shaped frame, the first motor is in driving connection with a second rotating disc, a third hydraulic rod is oppositely arranged on the side face of the second rotating disc, the telescopic end of the third hydraulic rod is connected with an electromagnet, and a sand blasting mechanism is arranged on the side face of the rack. The steel door plate can be fixed between the first pressing plate and the second pressing plate, rotation of the four faces of the steel door plate can be achieved through the first rotating disc, the other two faces of the steel door plate can be overturned through the overturning mechanism, the six faces of the steel door plate can all directly face a sand blasting pipe, sand blasting and rust removing operation is facilitated, and the rust removing efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of rust removal, in particular to a rust removal device for a steel door panel before painting. Background Art

[0002] Steel door panels, characterized by their strength, durability, and fire resistance, play a vital role in civil air defense projects, industrial plants, commercial buildings, and other fields. Steel door panels are typically made from high-quality steel and undergo special surface treatment to enhance their corrosion resistance and durability. The production process is particularly critical in civil air defense projects. First, high-quality steel is selected as raw material, and through processes such as cutting, bending, and welding, the basic frame of the door panel is formed. Subsequently, fine grinding and surface treatment are performed to ensure the flatness and smoothness of the door panel. Furthermore, to meet the special requirements of civil air defense projects, steel door panels require special treatments such as fire and explosion protection to ensure their safety. Painting is a crucial step in the steel door panel production process. Applying one or more layers of paint protects the steel door panel from corrosion and oxidation, while enhancing its aesthetics and durability. Before painting, the steel door panels must be thoroughly cleaned and derusted to ensure the adhesion and uniformity of the coating. In addition, during production, transportation, and storage, the steel door panels may be exposed to various environmental factors, such as air humidity and chemicals. These factors often cause rust on the surface of the steel door panels. Therefore, before painting, strict rust removal must be carried out. In the existing technology, rust removal of steel door panels before painting generally relies on manual rust removal, using rust removal machinery to polish the surface of the steel door panels to remove the rust. Due to the heavy weight of the steel door panels, manual rust removal requires the steel door panels to be flipped over. Manual rust removal has disadvantages such as low efficiency, poor effect, and high labor intensity. Utility Model Content

[0003] In view of this, the present invention proposes a rust removal device for steel door panels before painting, so as to solve the above problems.

[0004] The technical solution of the present utility model is achieved as follows:

[0005] A rust removal device for steel door panels before painting, comprising a frame and a controller, a moving mechanism is provided at the bottom of the frame, a first turntable is rotatably provided at the top of the moving mechanism, a first hydraulic rod is relatively provided on the top surface of the first turntable, a telescopic end of the first hydraulic rod is connected to a first pressure plate, a first U-shaped frame is provided on the side of the moving mechanism, a bearing is provided on the top bottom surface of the first U-shaped frame, a second hydraulic rod is connected to the bottom surface of the bearing, a telescopic end of the second hydraulic rod is connected to a second pressure plate, a steel door panel is clamped between the first pressure plate and the second pressure plate, a flipping mechanism is provided on the side of the first U-shaped frame, and the flipping mechanism includes a first motor, a second turntable, a third hydraulic rod and an electromagnet, the first motor is provided on the side of the first U-shaped frame, the output shaft of the first motor passes through the first U-shaped frame and is driven to be connected to the second turntable, and a third hydraulic rod is relatively provided on the side of the second turntable Rod, the side of the electromagnet is connected to the telescopic end of the third hydraulic rod, a second U-shaped frame is provided on the side of the frame, a first screw rod is provided on the second U-shaped frame, one end of the first screw rod is rotatably connected to the second U-shaped frame, and the other end thereof passes through the second U-shaped frame and is driven by a second motor, and the second motor is arranged on the top surface of the second U-shaped frame, a first moving block is provided on the first screw rod, and a fourth hydraulic rod is provided on the side of the first moving block, the telescopic end of the fourth hydraulic rod is connected to a sandblasting pipe, the sandblasting pipe is connected to a sand storage bin through a conduit, and the sand storage bin is arranged on the top surface of the frame, the sandblasting pipe is connected to an air compressor through a pressure pipe, and the air compressor is arranged on the top surface of the frame, and the controller is arranged on the top surface of the frame and is electrically connected to the moving mechanism, the first hydraulic rod, the second hydraulic rod, the third hydraulic rod, the fourth hydraulic rod, the electromagnet, the first motor and the second motor.

[0006] Preferably, the moving mechanism includes a second screw rod, a third motor, a second moving block and a fourth motor. The second screw rod is arranged at the bottom of the frame, one end of which is rotatably connected to the frame, and the other end passes through the frame and is driven to the third motor. The third motor is arranged on the side of the frame, the second moving block is arranged on the second screw rod, and a cavity is provided in the second moving block. The fourth motor is arranged in the cavity, and its output shaft passes through the second moving block and is driven to the first turntable.

[0007] Preferably, the maximum distance between the top surface of the first pressure plate and the central axis of the second turntable is greater than the maximum radius of the steel door panel when it rotates.

[0008] Preferably, it also includes a travel switch, which includes a travel switch body and a travel switch block. The travel switch body is embedded in the side of the electromagnet away from one end of the third hydraulic rod. One end of the travel switch block is connected to the side of the travel switch body, and the other end protrudes from the side of the electromagnet. The travel switch is electrically connected to the controller.

[0009] Preferably, it further comprises an electric valve, which is arranged on the conduit and is electrically connected to the controller.

[0010] Preferably, the conduit is made of a polyurethane corrugated tube, and the pressure tube is made of a flexible rubber tube.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] The rust removal device is provided with a clamping mechanism, which can clamp and fix the steel door panel. The moving mechanism can drive the first turntable to move at the bottom of the frame and rotate around its own axis, so that the steel door panel can be rotated so that the four surfaces of the steel door panel and the sandblasting tube are perpendicular to each other. A flipping mechanism is also provided, and the steel door panel can be flipped by using the flipping mechanism so that the other two surfaces of the steel door panel and the sandblasting tube are perpendicular to each other. The six surfaces of the steel door panel can face the sandblasting tube, which is conducive to the sandblasting and rust removal operation. The fourth hydraulic rod can be used to adjust the distance between the sandblasting tube and the steel door panel to achieve efficient and uniform rust removal treatment on the six planes of the steel door panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only preferred embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0014] Figure 1 This is a schematic diagram of the three-dimensional structure of a rust removal device for steel door panels before painting according to the present invention;

[0015] Figure 2 This is a schematic cross-sectional view of a rust removal device for a steel door panel before painting according to the present invention;

[0016] Figure 3 for Figure 2 Cross-section at AA in the middle;

[0017] Figure 4 for Figure 2 Enlarged view of the middle BB;

[0018] Figure 5 for Figure 4 Enlarged view of point D in the middle;

[0019] Figure numerals: 1. frame; 2. first screw rod; 3. first moving block; 4. first motor; 5. cavity; 6. second motor; 7. first turntable; 8. first hydraulic rod; 9. first U-shaped frame; 10. bearing; 11. second hydraulic rod; 12. first pressure plate; 13. second pressure plate; 14. second turntable; 15. third hydraulic rod; 16. electromagnet; 17. third motor; 18. second U-shaped frame; 19. second screw rod; 20. fourth motor; 21. second moving block; 22. sandblasting tube; 23. conduit; 24. pressure pipe; 25. air compressor; 26. sand storage bin; 27. electric valve; 28. fourth hydraulic rod; 29. controller; 30. steel door panel; 31. travel switch body; 32. travel switch collision block. DETAILED DESCRIPTION

[0020] In order to better understand the technical content of the present invention, a specific embodiment is provided below, and the present invention is further described in conjunction with the accompanying drawings.

[0021] See also Figures 1 to 5The utility model provides a rust removal device for steel door panels before painting, comprising a frame 1 and a controller 29. A moving mechanism is provided at the bottom of the frame 1. A first turntable 7 is rotatably provided on the top of the moving mechanism. A first hydraulic rod 8 is provided on the top surface of the first turntable 7. The telescopic end of the first hydraulic rod 8 is connected to a first pressing plate 12. A first U-shaped frame 9 is provided on the side of the moving mechanism. A bearing 10 is provided on the bottom surface of the top of the first U-shaped frame 9. A second hydraulic rod 11 is connected to the bottom surface of the bearing 10. The second hydraulic rod 11 can rotate on the bearing 10. The second hydraulic rod 11 The telescopic end is connected to the second pressing plate 13, and a steel door panel 30 is clamped between the first pressing plate 12 and the second pressing plate 13. A flip mechanism is provided on the side of the first U-shaped frame 9, and the flip mechanism includes a first motor 4, a second turntable 14, a third hydraulic rod 15 and an electromagnet 16. The first motor 4 adopts a stepping motor that can accurately control the rotation angle. The first motor 4 is provided on the side of the first U-shaped frame 9, and the output shaft of the first motor 4 passes through the first U-shaped frame 9 and is driven to the second turntable 14. The side of the second turntable 14 is relatively provided with a third hydraulic rod 15, and the side of the electromagnet 16 is provided with a third hydraulic rod 15. The surface is connected to the telescopic end of the third hydraulic rod 15, and a second U-shaped frame 18 is provided on the side of the frame 1. A first screw rod 2 is provided on the second U-shaped frame 18. One end of the first screw rod 2 is rotatably connected to the second U-shaped frame 18, and the other end thereof passes through the second U-shaped frame 18 and is driven by a second motor 6. The second motor 6 is provided on the top surface of the second U-shaped frame 18. The second motor 6 adopts a stepping motor that can accurately control the rotation angle. A first moving block 3 is provided on the first screw rod 2, and a fourth hydraulic rod 28 is provided on the side of the first moving block 3. The telescopic end of the fourth hydraulic rod 28 is connected to a sandblasting tube 22, the sandblasting tube 22 is connected to the sand storage bin 26 through the conduit 23, the sand material is quartz sand, the sand storage bin 26 is arranged on the top surface of the frame 1, the sandblasting tube 22 is connected to the air compressor 25 through the pressure pipe 24, the air compressor 25 is arranged on the top surface of the frame 1, the controller 29 is arranged on the top surface of the frame 1 and is electrically connected to the moving mechanism, the first hydraulic rod 8, the second hydraulic rod 11, the third hydraulic rod 15, the fourth hydraulic rod 28, the electromagnet 16, the first motor 4 and the second motor 6, and the controller 29 adopts a low-power microprocessor model STM32-L0.

[0022] Before the rust removal device works, the steel door panel 30 needs to be placed on the first pressing plate 12, and the first hydraulic rod 8 is started first. The telescopic end of the first hydraulic rod 8 is shortened to drive the first pressing plate 12 to descend. When it descends to the lowest point, the first hydraulic rod 8 is stopped, and the steel door panel 30 is placed vertically on the top surface of the first pressing plate 12. Then the first hydraulic rod 8 and the second hydraulic rod 11 are started at the same time. The telescopic end of the second hydraulic rod 11 is extended to drive the second pressing plate 13 to descend. The second pressing plate 13 descends and abuts against the top surface of the steel door panel 30. The telescopic end of the first hydraulic rod 8 is extended to drive the first pressing plate 12 to rise. The first pressing plate 12 and the second pressing plate 13 clamp the steel door panel 30, and then the moving mechanism is started. The moving mechanism drives the first turntable 7 to move to one side and moves to a predetermined position and stops. Stop, at this time, the side of the steel door panel 30 is aligned with the sandblasting tube 22, and then the second motor 6 is started, the second motor 6 rotates to drive the first screw rod 2 to rotate, the first screw rod 2 rotates to drive the first moving block 3 to move, and the first moving block 3 moves to drive the fourth hydraulic rod 28 to rise along the direction of the first screw rod 2. When the rising height is the same as the height of the top surface of the steel door panel 30, the second motor 6 is stopped, and then the air compressor 25 is started. The air compressor 25 uses compressed air through the pressure pipe 24 to enter the sandblasting tube 22, and blows the sand out of the sandblasting tube 22 at high speed. The high-speed quartz sand particles impact the surface of the steel door panel 30, crushing and washing away rust, oxide layer, stains and other substances, so that the surface of the steel door panel 30 is cleared of rust while increasing the roughness and improving the surface quality.When the fourth hydraulic rod 28 reaches the lowest point, the moving mechanism is started, and the moving mechanism drives the first turntable 7 to move a short distance to one side, and then the second motor 6 is started, and the second motor 6 rotates to drive the first screw rod 2 to rotate, and the first screw rod 2 rotates to drive the first moving block 3 to move, and the first moving block 3 moves and drives the fourth hydraulic rod 28 to slowly rise along the direction of the first screw rod 2, and the sand material is continuously ejected from the sandblasting tube 22 to perform the rust removal operation. When the fourth hydraulic rod 28 reaches the highest point, the moving mechanism is then started again, and the moving mechanism drives the first turntable 7 to move a short distance to one side. Under the control of the controller 29, the rust removal device automatically repeats the above operations until the rust removal operation on one side of the steel door panel 30 is completed. ; After the rust removal operation on one side of the steel door panel 30 is completed, the moving mechanism is started, and the moving mechanism drives the first turntable 7 to rotate. The first turntable 7 rotates 90 degrees, so that the side of the steel door panel 30 faces the sandblasting tube 22, and then the sandblasting and rust removal operation is completed. In this way, the rust removal operation on the four sides of the steel door panel 30 can be completed; after the rust removal operation on the four sides of the steel door panel 30 is completed, the third hydraulic rod 15 is started, and the telescopic end of the third hydraulic rod 15 is extended to drive the electromagnet 16 to move. When the electromagnet 16 moves and abuts against the side of the steel door panel 30, the electromagnet 16 is started. After the electromagnet 16 is energized, an electromagnetic force is generated to suck the steel door panel 30, and then the first hydraulic rod 8 and the second hydraulic rod 11 are started at the same time. The telescopic end of the hydraulic rod 8 shortens and drives the first pressure plate 12 to descend, and the telescopic end of the second hydraulic rod 11 shortens and drives the second pressure plate 13 to rise, thereby loosening the steel door panel 30, and then the first motor 4 is started, and the first motor 4 rotates 90 degrees to drive the second turntable 14 to rotate 90 degrees, thereby realizing that the steel door panel 30 rotates 90 degrees around the geometric axis of the second turntable 14, and then the first hydraulic rod 8 and the second hydraulic rod 11 are started at the same time, and the telescopic end of the first hydraulic rod 8 extends and drives the first pressure plate 12 to rise, and the telescopic end of the second hydraulic rod 11 extends and drives the second pressure plate 13 to descend, thereby clamping the steel door panel 30, and then the electromagnet 16 is closed, the electromagnet 16 loses suction, and then the third hydraulic rod 15 is started, and the third hydraulic rod 15 is started. The telescopic end of the rod 15 is shortened to drive the electromagnet 16 to reset, thereby completing the flipping operation of the steel door panel 30; when the flipping operation of the steel door panel 30 is completed, the moving mechanism is started, and the moving mechanism drives the first turntable 7 to rotate and drives the steel door panel 30 to rotate 90 degrees, so that the remaining surface of the steel door panel 30 that has not been derusted is facing the sandblasting tube 22, and then the remaining two side surfaces of the steel door panel 30 can be completed according to the above-mentioned sandblasting and derusting operation, so that the six sides of the steel door panel 30 can face the sandblasting tube 22, which is not only conducive to the sandblasting and derusting operation, but also the fourth hydraulic rod 28 can be used to adjust the distance between the sandblasting tube 22 and the steel door panel 30, so that the six planes of the steel door panel 30 can be efficiently and evenly derusted.

[0023] Preferably, the moving mechanism includes a second screw rod 19, a third motor 17, a second moving block 21 and a fourth motor 20. The second screw rod 19 is arranged at the bottom of the frame 1, one end is rotatably connected to the frame 1, and the other end passes through the frame 1 and is driven to the third motor 17. The third motor 17 is arranged on the side of the frame 1. The third motor 17 adopts a stepper motor that can accurately control the rotation angle. The second moving block 21 is arranged on the second screw rod 19. A cavity 5 is provided in the second moving block 21. The fourth motor 20 is arranged in the cavity 5, and its output shaft passes through the second moving block 21 and is driven to the first turntable 7. The fourth motor 20 adopts a stepper motor that can accurately control the rotation angle.

[0024] When the rust removal device is working, the function of the moving mechanism is to drive the first turntable 7 to move horizontally at the bottom of the frame 1 and drive the first turntable 7 to rotate a predetermined angle. When the moving mechanism is started, the third motor 17 is started first. The rotation of the third motor 17 drives the second screw rod 19 to rotate. The second moving block 21 is screwed to the second screw rod 19, and the second screw rod 19 drives the second moving block 21 to move along the second screw rod 19; when the first turntable 7 needs to rotate a specific angle, the fourth motor 20 is started. The fourth motor 20 rotates a specific angle under the control of the controller 29. The rotation of the fourth motor 20 drives the first turntable 7 to rotate, so that under the control of the controller 29, the first turntable 7 can rotate a specific angle.

[0025] Preferably, the maximum distance between the top surface of the first pressing plate 12 and the central axis of the second turntable 14 is greater than the maximum radius of the steel door panel 30 when rotating.

[0026] When the rust removal device completes the rust removal operation on the four sides of the steel door panel 30, the flipping mechanism can flip the steel door panel 30. When the steel door panel 30 rotates around the geometric axis of the second turntable 14, the maximum distance between the top surface of the first pressure plate 12 and the central axis of the second turntable 14 is greater than the maximum radius of the steel door panel 30 when rotating. The purpose is to ensure that the steel door panel 30 will not be obstructed by other objects when rotating.

[0027] Preferably, a travel switch is further included, which includes a travel switch body 31 and a travel switch block 32. The travel switch body 31 is embedded in the side of the electromagnet 16 away from one end of the third hydraulic rod 15. One end of the travel switch block 32 is connected to the side of the travel switch body 31, and the other end protrudes from the side of the electromagnet 16. The travel switch is electrically connected to the controller 29.

[0028] When the flip mechanism is working, the travel switch body 31 is embedded in the side of the electromagnet 16 away from the end of the third hydraulic rod 15, ensuring that when the third hydraulic rod 15 moves, the travel switch can accurately sense the distance between the electromagnet 16 and the side of the steel door panel 30. The travel switch collision block 32 has one end connected to the side of the travel switch body 31 and the other end protruding from the side of the electromagnet 16. When the third hydraulic rod 15 drives the electromagnet 16 to move toward the steel door panel 30, the travel switch collision block 32 contacts the side of the steel door panel 30, thereby triggering the action of the travel switch. After the travel switch is triggered, the signal is transmitted to the controller 29 through the electrical wire. The controller 29 controls the electromagnet 16 to be energized, ensuring that the electromagnet 16 firmly attracts the steel door panel 30.

[0029] Preferably, the device further includes an electric valve 27 , which is disposed on the conduit 23 and is electrically connected to the controller 29 .

[0030] When the rust removal device completes the rust removal operation, the electric valve 27 is closed, and the sand in the sand storage bin 26 stops flowing into the sandblasting pipe 22. The air compressor 25 is started, and the air compressor 25 compresses the air and enters the sandblasting pipe 22 through the pressure pipe 24. The compressed air is then ejected from the sandblasting pipe 22 to clean the residual rust and some impurities and dust on the steel door panel 30.

[0031] Preferably, the conduit 23 is made of a polyurethane corrugated tube, and the pressure tube 24 is made of a flexible rubber tube.

[0032] When the rust removal device is performing rust removal operation, the sandblasting tube 22 continuously rises and falls. The polyurethane corrugated tube material of the conduit 23 can prevent the conduit 23 from being blocked by sand material due to a small bending radius; the pressure tube 24 is made of a flexible rubber tube. When the pressure tube 24 is bent, compressed air can still pass through smoothly, which is conducive to the sandblasting and rust removal operation.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A rust removal device for steel door panels before painting, characterized in that: The cam is connected to the second rotary table by a first hydraulic rod, and the telescopic end of the first hydraulic rod is connected to the first pressure plate. A first U-shaped frame is provided on the side of the mobile mechanism. A bearing is provided on the top bottom surface of the first U-shaped frame. A second hydraulic rod is connected to the bottom surface of the bearing. The telescopic end of the second hydraulic rod is connected to the second pressure plate. A steel door panel is clamped between the first pressure plate and the second pressure plate. A flip mechanism is provided on the side of the first U-shaped frame. The flip mechanism includes a first motor, a second rotary table, a third hydraulic rod and an electromagnet. The first motor is provided on the side of the first U-shaped frame. The output shaft of the first motor passes through the first U-shaped frame and is driven to connect to the second rotary table. The third hydraulic rod is provided on the side of the second rotary table. The electromagnet The side is connected to the telescopic end of the third hydraulic rod, and a second U-shaped frame is provided on the side of the frame, and a first screw rod is provided on the second U-shaped frame. One end of the first screw rod is rotatably connected to the second U-shaped frame, and the other end thereof passes through the second U-shaped frame and is driven by a second motor. The second motor is arranged on the top surface of the second U-shaped frame, and a first moving block is provided on the first screw rod. A fourth hydraulic rod is provided on the side of the first moving block, and the telescopic end of the fourth hydraulic rod is connected to a sandblasting pipe, and the sandblasting pipe is connected to a sand storage bin through a conduit, and the sand storage bin is arranged on the top surface of the frame, and the sandblasting pipe is connected to an air compressor through a pressure pipe, and the air compressor is arranged on the top surface of the frame, and the controller is arranged on the top surface of the frame and is electrically connected to the moving mechanism, the first hydraulic rod, the second hydraulic rod, the third hydraulic rod, the fourth hydraulic rod, the electromagnet, the first motor and the second motor.

2. The rust removal device for steel door panels before painting according to claim 1, characterized in that: The moving mechanism includes a second screw rod, a third motor, a second moving block and a fourth motor. The second screw rod is arranged at the bottom of the frame, one end of which is rotatably connected to the frame, and the other end passes through the frame and is driven to the third motor. The third motor is arranged on the side of the frame, the second moving block is arranged on the second screw rod, and a cavity is provided in the second moving block. The fourth motor is arranged in the cavity, and its output shaft passes through the second moving block and is driven to the first turntable.

3. The rust removal device for steel door panels before painting according to claim 1, characterized in that: The maximum distance between the top surface of the first pressing plate and the central axis of the second turntable is greater than the maximum radius of the steel door panel when it rotates.

4. The rust removal device for steel door panels before painting according to claim 1, characterized in that: It also includes a travel switch, which includes a travel switch body and a travel switch impact block. The travel switch body is embedded in the side of the electromagnet away from one end of the third hydraulic rod. One end of the travel switch impact block is connected to the side of the travel switch body, and the other end protrudes from the side of the electromagnet. The travel switch is electrically connected to the controller.

5. The rust removal device for steel door panels before painting according to claim 1, characterized in that: It also includes an electric valve, which is arranged on the catheter and is electrically connected to the controller.

6. The rust removal device for steel door panels before painting according to claim 1, characterized in that: The conduit is made of a polyurethane corrugated tube, and the pressure tube is made of a flexible rubber tube.

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