A dip coating apparatus for dacromet treatment

Abstract

The utility model relates to the technical field of dip coating, specifically relates to a dip coating equipment for dacromet treatment, including dip coating box, the dip coating box is the cavity structure of top opening, the upper portion of dip coating box is equipped with control shell, is equipped with the lifter for driving control shell lift on dip coating box, the lower portion of control shell is equipped with a plurality of pivot, and the bottom of pivot is equipped with the support structure for placing the workpiece of dip coating, and the bottom of the inner wall of control shell is equipped with a plurality of first rectangular holes, and the top of pivot penetrates corresponding first rectangular hole, and control shell is equipped with the drive assembly for driving pivot autorotation and translation, let coating liquid fill the surface of workpiece smoothly, reduce the possible of the leakage coating point due to bubble, improve dip coating quality, and the translational motion of workpiece ensures that workpiece can contact coating liquid in different positions in dip coating process, greatly improves batch stability and product consistency.

Description

Technical Field

[0001] This utility model relates to the field of dip coating technology, and in particular to a dip coating device for Dacromet treatment. Background Technology

[0002] Dacromet is a new type of anti-corrosion coating. During the entire coating process, Dacromet does not generate wastewater, exhaust gas, or waste residue that pollutes the environment. Dacromet coating is a green and environmentally friendly metal surface treatment technology. The Dacromet coating applied to the surface of metal workpieces provides excellent protection and is currently widely used in automotive parts, subway tunnels, railways, highways, bridges, home appliances, hardware tools, and other fields. Dacromet coating processes can be broadly categorized into dip coating, spray coating, and hang coating.

[0003] However, it's worth considering that during dip coating, the basket containing the workpiece is typically placed inside the coating tank, but remains stationary behind the tank. While this method is simple, when the workpiece is immersed in the coating solution, air is trapped in some of the workpiece's grooves. In a stationary state, this trapped air lacks external force to escape, and the areas occupied by the air bubbles cannot be covered by the coating, forming gaps in the coating. These gaps are the weakest points in the workpiece's corrosion protection, allowing corrosive media to directly attack the substrate and causing premature workpiece failure.

[0004] Therefore, in order to solve the above problems, a more suitable facility that meets the needs of users is needed. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide a Dacromet coating device to solve the problem that, in a static state, the trapped air has no external force to drive it out, and the space occupied by the air bubbles cannot be covered by the coating liquid, thus forming coating gaps.

[0006] To achieve the above objectives, this utility model provides a Dacromet coating equipment, including a coating tank, which is a cavity structure with an open top. A control shell is provided above the coating tank, and a lifter for driving the control shell to rise and fall is provided on the coating tank. The control housing has several rotating shafts at its bottom, and the bottom of the rotating shafts has a support structure for placing the workpiece to be dipped and coated. The bottom of the inner wall of the control housing has several first rectangular holes, and the top of the rotating shafts passes through the corresponding first rectangular holes. The control housing is equipped with a drive assembly for driving the rotating shafts to rotate and translate.

[0007] Preferably, the drive assembly includes a movable seat rotatably mounted on the top of the rotating shaft, and the movable seat is located inside the control housing. The movable seat has a second rectangular hole, and a fixed column is slidably disposed in the second rectangular hole. A rotating frame is disposed inside the dip coating box, and a servo motor is fixedly connected to the dip coating box. The output end of the servo motor is fixedly connected to the rotating frame, and the top of the fixed column is fixedly connected to the rotating frame. A guide component adapted to the movable seat is disposed inside the control housing, and a meshing unit adapted to the rotating shaft is disposed inside the control housing.

[0008] Preferably, the guide includes a fixed frame disposed within the control housing, the fixed frame and the inner wall of the control housing are connected by a plurality of guide posts, a plurality of support parts are fixedly connected to the movable seat, and the support parts are slidably sleeved on the outside of the corresponding guide posts.

[0009] Preferably, the control housing is provided with a plurality of toothed plates, the two ends of which are fixedly connected to the fixed frame and the inner wall of the control housing, respectively. A gear is fixedly sleeved on the outside of the rotating shaft, and the gear meshes with the corresponding toothed plate.

[0010] Preferably, the lifting device includes several hydraulic telescopic rods fixedly installed on the dipping tank, and the telescopic ends of the hydraulic telescopic rods and the control housing are fixedly connected by a support frame.

[0011] Preferably, the support structure includes a mounting column disposed below the rotating shaft, a storage shell is fixedly connected to the bottom end of the mounting column, the storage shell is a cavity structure with an open top, and several through holes are provided on the storage shell, and a disassembly and assembly device adapted to the rotating shaft is installed at the top end of the mounting column.

[0012] Preferably, the disassembly and assembly device includes a slider fixedly installed on the top of the mounting column, the bottom end of the rotating shaft is provided with a groove adapted to the slider, and the slider is located in the corresponding groove. The cross-section of the slider is T-shaped. A support ring is fixedly sleeved on the outside of the mounting column, and a positioning sleeve is provided at the top of the support ring. The bottom end of the rotating shaft and the top end of the mounting column are both located in the positioning sleeve.

[0013] The beneficial effects of this utility model are as follows: The operator places the workpiece to be dip-coated on the support structure, and the lifting device drives the control shell and support structure to move downward so that the workpiece enters the dip-coating tank. The drive assembly drives the rotating shaft to rotate and translate, which in turn drives the support structure to rotate and translate. When the support structure and the workpiece rotate, the centrifugal force and the shear force of the liquid work together to expel air bubbles from the coating liquid, allowing the coating liquid to smoothly fill the surface of the workpiece, reducing the possibility of missed coating points due to air bubbles, and improving the dip-coating quality. The translational movement of the workpiece ensures that the workpiece can contact the coating liquid at different positions in the dip-coating tank during the dip-coating process, which greatly improves batch stability and product consistency. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model; Figure 2 This is a schematic diagram of the structure of the bottom of the control shell in an embodiment of the present invention; Figure 3 This is a schematic diagram of the internal structure of the control shell in an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the fixing frame in an embodiment of the present utility model; Figure 5 This is a schematic diagram of the structure of the movable seat in an embodiment of the present utility model; Figure 6 This is a structural diagram showing the disassembled installation column and positioning sleeve in an embodiment of the present invention.

[0016] The diagram is marked as follows: 1. Dipping tank; 2. Control housing; 3. Rotating shaft; 4. Mounting column; 5. Storage housing; 6. Movable seat; 7. First rectangular hole; 8. Second rectangular hole; 9. Rotating frame; 10. Servo motor; 11. Fixed column; 12. Support part; 13. Fixed frame; 14. Guide column; 15. Toothed plate; 16. Gear; 17. Hydraulic telescopic rod; 18. Support frame; 19. Slider; 20. Slide groove; 21. Support ring; 22. Positioning sleeve. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments.

[0018] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0019] This specification provides one or more embodiments of a Dacromet coating apparatus, such as... Figure 1 , Figure 2 and Figure 3 As shown, it includes an immersion coating tank 1, which is a cavity structure with an open top. A control shell 2 is provided above the immersion coating tank 1, and a lifter is provided on the immersion coating tank 1 for driving the control shell 2 to rise and fall. Several rotating shafts 3 are provided below the control housing 2. The bottom of the rotating shaft 3 is provided with a support structure for placing the workpiece to be dip-coated. Several first rectangular holes 7 are opened on the bottom of the inner wall of the control housing 2, and the top of the rotating shaft 3 passes through the corresponding first rectangular holes 7. The control housing 2 is provided with a drive assembly for driving the rotating shaft 3 to rotate and translate. The operator places the workpiece to be dip-coated on the support structure and drives the control housing 2 and the support structure to move down through the lifting device so that the workpiece enters the dip-coating tank 1. The rotating shaft 3 is driven to rotate and translate through the drive assembly so that the rotating shaft 3 drives the support structure to rotate and translate. When the support structure and the workpiece rotate, the centrifugal force and the shear force of the liquid will work together to make the air bubbles on the workpiece expel from the coating liquid, so that the coating liquid can smoothly fill the surface of the workpiece, reduce the possibility of missed coating points due to air bubbles, and improve the dip-coating quality. The translational movement of the workpiece ensures that the workpiece can contact the coating liquid at different positions in the dip-coating tank 1 during the dip-coating process, which greatly improves batch stability and product consistency.

[0020] In embodiments of this utility model, such as Figure 1 , Figure 3 , Figure 4 and Figure 5As shown, the drive assembly includes a movable seat 6 rotatably mounted on the top of the rotating shaft 3, and the movable seat 6 is located inside the control housing 2. A second rectangular hole 8 is provided on the movable seat 6, and a fixed post 11 is slidably disposed within the second rectangular hole 8. A rotating frame 9 is provided inside the immersion coating tank 1, and a servo motor 10 is fixedly connected to the immersion coating tank 1. The output end of the servo motor 10 is fixedly connected to the rotating frame 9. The top end of the fixed post 11 is fixedly connected to the rotating frame 9. A guide component adapted to the movable seat 6 is provided inside the control housing 2, and a meshing unit adapted to the rotating shaft 3 is provided inside the control housing 2. The guide component includes a fixed frame 13 disposed inside the control housing 2. The fixed frame 13 and the inner wall of the control housing 2 are connected by several guide posts 14. Several support parts 12 are fixedly connected to the movable seat 6, and the support parts 12 are slidably sleeved on the corresponding guide posts. Outside of 14, the control housing 2 is provided with several toothed plates 15. The two ends of the toothed plates 15 are fixedly connected to the fixed frame 13 and the inner wall of the control housing 2, respectively. The rotating shaft 3 is fixedly sleeved with a gear 16, and the gear 16 meshes with the corresponding toothed plate 15. The rotating frame 9 is driven to rotate by the servo motor 10. The rotating frame 9 drives the fixed column 11 to slide in the second rectangular hole 8. The fixed column 11 can push the movable seat 6 to move horizontally. The movable seat 6 drives the support part 12 to slide relative to the guide column 14. Through the cooperation of the support part 12 and the guide column 14, the movable seat 6 can move smoothly in the horizontal direction. The movable seat 6 drives the rotating shaft 3 and the gear 16 to translate. The rotating shaft 3 moves relative to the first rectangular hole 7. The gear 16 rolls on the toothed plate 15, so that the gear 16 and the rotating shaft 3 can rotate while translating.

[0021] In embodiments of this utility model, such as Figure 1 , Figure 5 and Figure 6As shown, the lifting device includes several hydraulic telescopic rods 17 fixedly installed on the dipping tank 1. The telescopic ends of the hydraulic telescopic rods 17 and the control housing 2 are fixedly connected by a support frame 18. The support structure includes a mounting column 4 located below the rotating shaft 3. A storage housing 5 is fixedly connected to the bottom end of the mounting column 4. The storage housing 5 is a cavity structure with an open top and several through holes. A disassembly device adapted to the rotating shaft 3 is installed at the top of the mounting column 4. The disassembly device includes a slider 19 fixedly installed at the top of the mounting column 4. A groove 20 adapted to the slider 19 is opened at the bottom end of the rotating shaft 3, and the slider 19 is located in the corresponding groove 20. The cross-section of the slider 19 is a T-shaped structure. A support ring 21 is fixedly sleeved on the outside of the mounting column 4. A positioning sleeve 22 is contacted at the top of the support ring 21. The bottom end of the rotating shaft 3 and the mounting column 4 are fixedly connected by a support ring 21. The top of each of the mounting columns 4 is located inside the positioning sleeve 22. The operator places the workpiece to be dipped into the receiving shell 5 and drives the support frame 18 and control shell 2 downward through the hydraulic telescopic rod 17 so that the receiving shell 5 and the workpiece enter the dip coating tank 1. After the workpiece is dipped, the hydraulic telescopic rod 17 drives the receiving shell 5 out of the dip coating tank 1 through the support frame 18. The operator drives the positioning sleeve 22 upward so that the positioning sleeve 22 is removed from the top of the mounting column 4 and the slider 19 is exposed from the positioning sleeve 22. The support ring 21 no longer supports the positioning sleeve 22 and the positioning sleeve 22 no longer limits the position of the mounting column 4. The operator drives the mounting column 4 to translate relative to the rotating shaft 3, and the slider 19 is removed from the slide groove 20. The mounting column 4 and the receiving shell 5 can be removed, making it easy to remove the entire receiving shell 5 containing the workpiece.

[0022] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.

[0023] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, 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. A Dacromet coating apparatus, comprising a coating tank (1), characterized in that, The dip coating tank (1) is a cavity structure with an open top. A control shell (2) is provided above the dip coating tank (1). A lifter is provided on the dip coating tank (1) to drive the control shell (2) to rise and fall. The control housing (2) has several rotating shafts (3) at its bottom. The bottom of the rotating shaft (3) is provided with a support structure for placing the workpiece to be dipped and coated. The bottom of the inner wall of the control housing (2) has several first rectangular holes (7), and the top of the rotating shaft (3) passes through the corresponding first rectangular holes (7). The control housing (2) is provided with a drive assembly for driving the rotating shaft (3) to rotate and translate.

2. The Dacromet coating apparatus according to claim 1, characterized in that, The drive assembly includes a movable seat (6) rotatably mounted on the top of the rotating shaft (3), and the movable seat (6) is located inside the control housing (2). A second rectangular hole (8) is provided on the movable seat (6), and a fixed column (11) is slidably provided in the second rectangular hole (8). A rotating frame (9) is provided inside the dip coating box (1). A servo motor (10) is fixedly connected to the dip coating box (1), and the output end of the servo motor (10) is fixedly connected to the rotating frame (9). The top of the fixed column (11) is fixedly connected to the rotating frame (9). A guide component adapted to the movable seat (6) is provided inside the control housing (2), and a meshing unit adapted to the rotating shaft (3) is provided inside the control housing (2).

3. The Dacromet coating apparatus according to claim 2, characterized in that, The guide includes a fixed frame (13) disposed in the control housing (2). The fixed frame (13) and the inner wall of the control housing (2) are connected by a number of guide posts (14). A number of support parts (12) are fixedly connected to the movable seat (6), and the support parts (12) are slidably sleeved on the outside of the corresponding guide posts (14).

4. The Dacromet coating apparatus according to claim 3, characterized in that, The control housing (2) is provided with several toothed plates (15). The two ends of the toothed plates (15) are fixedly connected to the inner wall of the fixed frame (13) and the control housing (2), respectively. The rotating shaft (3) is fixedly sleeved with a gear (16), and the gear (16) meshes with the corresponding toothed plate (15).

5. The Dacromet coating apparatus according to claim 1, characterized in that, The lifting device includes several hydraulic telescopic rods (17) fixedly installed on the dipping tank (1), and the telescopic ends of the hydraulic telescopic rods (17) and the control housing (2) are fixedly connected by a support frame (18).

6. The Dacromet coating apparatus according to claim 1, characterized in that, The support structure includes a mounting column (4) located below the rotating shaft (3). A storage shell (5) is fixedly connected to the bottom end of the mounting column (4). The storage shell (5) is a cavity structure with an open top and has several through holes. A disassembly and assembly device adapted to the rotating shaft (3) is installed at the top of the mounting column (4).

7. The Dacromet coating apparatus according to claim 6, characterized in that, The disassembly and assembly device includes a slider (19) fixedly installed on the top of the mounting post (4). The bottom end of the rotating shaft (3) is provided with a groove (20) that matches the slider (19), and the slider (19) is located in the corresponding groove (20). The cross-section of the slider (19) is a T-shaped structure. The outside of the mounting post (4) is fixedly fitted with a support ring (21). The top of the support ring (21) is in contact with a positioning sleeve (22), and the bottom end of the rotating shaft (3) and the top end of the mounting post (4) are both located in the positioning sleeve (22).

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