A flow-coat dip-coat apparatus for casting
The design of the flow coating and dip coating device solves the problem of easy damage to the coating layer of complex structure sand cores, and achieves efficient and low-cost coating protection. It is suitable for complex small volume sand cores and improves casting quality and production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- KOCEL STEEL
- Filing Date
- 2025-03-26
- Publication Date
- 2026-06-09
AI Technical Summary
In existing technologies, complex sand cores are prone to coating layer damage during brushing and spraying, leading to sand adhesion problems on the casting surface. Furthermore, the efficiency of spraying and brushing is low, making it difficult to meet the coating protection requirements for complex, small-volume sand cores.
The system employs a flow coating and dip coating device, combining flow coating and dip coating structures. Through the flow coating pump and coating pipeline, it enables multiple reuses and precise control of the coating. It is suitable for sand cores with complex structures. The coating can be used in combination during the flow coating and dip coating processes, improving coating efficiency and coating effect.
It improves the success rate and efficiency of coating on complex structure sand cores, reduces manual operation time, avoids sand adhesion problems caused by damage to the coating layer on the casting surface, improves casting quality and reduces usage costs.
Smart Images
Figure CN224333401U_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of casting technology, and in particular to a flow coating and dip coating apparatus for casting. Background Technology
[0002] In the traditional sand core casting industry, a high-temperature resistant coating is usually applied to the surface of the sand core in contact with the molten steel to protect the casting surface and prevent defects such as sand adhesion caused by direct contact between the high-temperature molten steel and the sand core. The conventional method is to manually spray the liquid coating onto the sand core surface using a spray gun or directly brush it onto the sand core surface. This method works well for sand cores with simple structures, but due to the instability of manual operation and the inability of the spray gun nozzle to turn according to the shape of the sand core, spraying and brushing cannot achieve qualified coating on the sand core surface for small-volume sand cores with more complex structures. This leads to frequent sand adhesion problems on the casting surface caused by damage to the coating layer. Summary of the Invention
[0003] This invention overcomes the shortcomings of existing technologies in brushing and spraying complex sand cores, which often lead to quality problems such as sand adhesion on the surface of castings. It provides a flow coating and dip coating device for casting, which improves the success rate, work efficiency and coating utilization of complex structure sand cores, and improves the surface quality of castings.
[0004] To achieve the above objectives, the present invention provides a casting flow coating apparatus, the technical solution of which is as follows:
[0005] A casting flow coating or dip coating device is used for flow coating or dip coating of castings or sand cores, comprising a flow coating structure and a dip coating structure; the flow coating structure is disposed above the dip coating structure, and the two are connected together; the dip coating structure includes a dip coating tank, a flow coating pump is disposed on one side of the dip coating tank, a dip coating material pipe is connected to the flow coating pump, and the other side of the dip coating material pipe is connected to the dip coating tank; the flow coating structure includes a flow coating tank, which is a hollow tank body with a load-bearing part at the bottom, a placement frame is disposed above the load-bearing part, a filter collection tank is movably connected below the placement frame, a flow coating pipe is suspended above the placement frame, the flow coating pipe is connected to the flow coating pump, and the flow coating pump is also connected to a coating material inlet pipe; when the liquid material in the dip coating tank exceeds the usage amount, it enters the pump body through the dip coating material pipe and circulates to the flow coating structure for flow coating; the dip coating structure can be used alone for sand core dip coating.
[0006] In one embodiment, a boom is symmetrically arranged above the outer sidewall of the dip coating tank, and the boom is inclinedly connected to the sidewall of the dip coating tank.
[0007] In one embodiment, the flow coating tank is divided into an upper part and a lower part, and the shell of the lower part of the flow coating tank is trapezoidal.
[0008] Furthermore, the load-bearing part is composed of load-bearing support members arranged vertically at intervals on the inner wall of the lower part of the flow coating tank and load-bearing members arranged horizontally, with the load-bearing members located at the connection between the upper part and the lower part of the flow coating tank.
[0009] Furthermore, the bottom dimension of the flow coating tank is 4-6 mm smaller than that of the dip coating tank.
[0010] In one embodiment, a grid is provided on the placement rack.
[0011] In one embodiment, the end of the coating pipe is a movable flexible tube.
[0012] In one embodiment, the size of the filter storage tank is the same as that of the placement rack, and a filter screen is provided on it for filtering the paint after it has been applied.
[0013] In one embodiment, the flow coating tank also includes symmetrically arranged booms.
[0014] In one embodiment, the dip-coating structure may also be equipped with a liquid detection device to control the amount of liquid used.
[0015] This invention provides a casting flow coating and dip coating device. Compared to traditional spraying and brushing, this device can coat various complex sand core surfaces, especially the large-scale production of complex 3D printed sand cores, with excellent brushing results. The device can combine flow coating and dip coating methods to improve the efficiency of coating complex sand cores. Furthermore, the expensive sand core coating is reused via a flow coating pump during the flow coating and dip coating process, improving coating efficiency. Because the device is modular, cleaning residual coating is convenient; any clogged areas can be disassembled and cleaned. When used in combination, dip coating and spraying efficiency are improved. The total height of the device is controlled below 1.4 meters, facilitating manual operation and allowing for single-person operation, reducing time by more than 50% compared to traditional brushing methods. This device is particularly suitable for small-volume sand cores with complex structures, achieving adequate coating protection for the sand core surface and avoiding sand adhesion problems caused by frequent coating layer damage on the casting surface, thus improving casting quality. Simultaneously, this device can also be used for flow coating and dip coating of castings, effectively reducing operating costs and improving coating brushing results. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the dip-coating structure in the embodiment;
[0017] Figure 2 This is a schematic diagram of the flow coating structure in the embodiment;
[0018] Figure 3 This is a partial schematic diagram of the flow coating structure in the embodiment;
[0019] Figure 4 This is a schematic diagram of the placement rack in the embodiment;
[0020] Figure 5 This is an assembly diagram of a casting flow coating and dip coating device.
[0021] 100 - Complex sand core structure; 200 - Dip-coating structure; 210 - Dip-coating tank; 220 - Tank boom; 300 - Flow coating structure; 310 - Flow coating tank; 311 - Upper part of flow coating tank; 312 - Lower part of flow coating tank; 320 - Load-bearing part; 321 - Load-bearing support; 322 - Load-bearing component; 330 - Placement rack; 340 - Flow coating tank boom; 400 - Flow coating pump; 500 - Dip-coating pipe; 600 - Flow coating pipeline; 700 - Coating inlet pipe Detailed Implementation
[0022] To more clearly illustrate the technical solution of the present invention, the present invention will be further described in detail below with reference to specific embodiments. Please note that the embodiments described below are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.
[0023] In this embodiment of the invention, a high-temperature resistant coating needs to be applied to the surface of the complex sand core 100. Therefore, this embodiment provides a casting flow coating / dipping device, specifically including the following technical solutions:
[0024] The flow coating and dip coating apparatus includes a dip coating structure 200 and a flow coating structure 300;
[0025] The dip coating structure 200 includes a dip coating tank 210, which can be made of 25-30mm thick stainless steel plate to form a sealed tank. In this embodiment, the height of the dip coating tank 210 is 800mm, and the size can be adjusted arbitrarily according to the maximum size of the sand core. The tank hanger 220 is installed on the symmetrical side wall of the dip coating tank 210. The tank hanger 220 and the side wall of the tank form a certain angle of inclination. The size of the angle is based on the premise that it does not interfere with the docking installation of the flow coating structure 300.
[0026] The flow coating structure 300 is installed above the dip coating structure 200. The two can be combined and connected, or used separately.
[0027] Furthermore, the flow coating structure 300 includes a flow coating tank 310, which is a hollow tank made of 10mm ordinary carbon steel plate. The height of the flow coating tank 310 is controlled at 600mm. The flow coating tank 310 is divided into two parts in height: an upper part 311 and a lower part 312. The height of the upper part 311 is 340-360mm, and the height of the lower part 312 is 240-260mm. The shell of the lower part 312 is trapezoidal. The size of its upper part is the same as that of the upper part 311, and the size decreases as it approaches the side to be installed in the dip coating structure. The bottom of the lower part 312 is 5mm smaller than the size of the dip coating structure 200 in both length and width, thus providing an assembly gap for the bottom of the flow coating structure 300 to be embedded into the top of the dip coating structure 200. A load-bearing part 320 is provided on the lower part 312. The load-bearing part 320 consists of load-bearing support members 321 vertically spaced on the inner wall of the lower part 312 of the flow coating tank and load-bearing members 322 horizontally arranged. The load-bearing support members 321 are load-bearing square steel bars installed on the lower part of the flow coating tank. Load-bearing square steel bars are fixed at the four corners of the tank and a certain number are spaced vertically along the inner wall, ensuring that the upper heights of the load-bearing square steel bars are on the same horizontal line to connect to the load-bearing members 322. The load-bearing members 322 are horizontally arranged and connected to the load-bearing support members 321 below via the load-bearing square steel bars. The load-bearing members 321 are located at the connection between the upper part 311 and the lower part 312 of the flow coating tank. The load-bearing members 321 support the placement rack 330, which is a steel grid connected above the load-bearing members 321. Furthermore, to ensure that the paint flowing into the dip coating structure 200 contains few impurities, a filter collection tank can be movably connected below the placement rack to facilitate the removal of impurities. The size of the filter collection tank is the same as that of the placement rack, and a filter screen is installed on it for filtering the paint after flow coating. A flow coating tank hanger 340 is also provided on the flow coating structure 300, and this hanger 340 is vertically connected to the side wall of the tank.
[0028] Furthermore, in combination Figure 5 The flow coating structure 300 is installed above the dip coating structure 200. A flow coating pump 400 is installed on one side of the dip coating tank 210. Specifically, it can be installed on the side of the bottom of the dip coating tank. The flow coating pump 400 is connected to the dip coating paint pipe 500, and the other side of the dip coating paint pipe 500 is connected to the dip coating tank 210. A flow coating pipe 600 is suspended above the placement rack 330. The flow coating pipe 600 is connected to the flow coating pump 400. The flow coating pump 400 is also connected to the paint inlet pipe 700. The end of the flow coating pipe 600 is a movable hose, so as to easily control the position of the paint flow.
[0029] In practical use, a screen core suitable for dip coating is placed in the dip coating structure 200, and a complex sand core 100 requiring flow coating is placed on the placement rack 330. The flow coating pump 400 draws paint from the paint inlet pipe 700, and then delivers the paint to the complex sand core 100 via the flow coating pipe 600. The end of the flow coating pipe 600 is a movable hose. By controlling the flow coating pipe, the flow coating position is controlled, allowing for the flow coating of complex sand cores. The paint used for flow coating can flow through the grid of the placement rack 330 into the dip coating tank 210, thus reusing the paint used for dip coating of the sand core. Dip coating and flow coating are performed simultaneously, improving production efficiency. Furthermore, when the liquid in the dip coating tank 210 exceeds the required amount, instead of using the paint inlet pipe 700 for new paint, the dip coating pipe 500 is used, and the flow coating pump 400 performs flow coating again, achieving multiple reuses of the paint.
[0030] Furthermore, to improve accuracy, an intelligent liquid material detection system can be introduced to control the use of coatings.
[0031] When flow coating is not required, dip coating structures can be used to dip the sand core with paint separately.
[0032] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A flow-coat dip-coat device for flow-coating or dip-coating of a casting or a sand core, characterized in that Including flow coating structure and dip coating structure; The flow coating structure is disposed above the dip coating structure, and the two are combined and connected. The dip coating structure includes a dip coating tank, a flow coating pump is provided on one side of the dip coating tank, a dip coating material pipe is connected to the flow coating pump, and the other side of the dip coating material pipe is connected to the dip coating tank. The flow coating structure includes a flow coating tank, which is a hollow tank with a load-bearing part at the bottom. A placement frame is provided above the load-bearing part, and a filter collection tank is movably connected below the placement frame. A flow coating pipe is suspended above the placement frame and connected to the flow coating pump. The flow coating pump is also connected to a paint inlet pipe. When the liquid material in the dip coating tank exceeds the usage amount, it enters the pump body through the dip coating material pipe and circulates to the flow coating structure for flow coating. The dip-coating structure can be used alone for core dip-coating.
2. A flow-coat dip-coat apparatus for casting according to claim 1, wherein The dip coating tank is symmetrically provided with a boom on the upper outer side wall, and the boom is inclinedly connected to the side wall of the dip coating tank.
3. A flow-coat dip-coat apparatus for casting according to claim 1, wherein The flow coating tank is divided into an upper part and a lower part, and the shell of the lower part of the flow coating tank is trapezoidal.
4. A flow-coat dip-coat apparatus for casting according to claim 3, wherein The load-bearing part is composed of load-bearing support members that are spaced apart in the vertical direction on the inner wall of the lower part of the flow coating tank and load-bearing members that are arranged in the horizontal direction. The load-bearing members are arranged at the connection between the upper part of the flow coating tank and the lower part of the flow coating tank.
5. A flow-coat dip-coat apparatus for casting according to claim 3, wherein The bottom dimension of the flow coating tank is 4-6 mm smaller than the dimension of the dip coating tank.
6. A flow-coat dip-coat apparatus for casting according to claim 1, wherein The placement rack is equipped with a grid.
7. A flow-coat dip-coat apparatus for casting according to claim 1, wherein The end of the flow coating pipe is a movable flexible tube.
8. A flow-coat dip-coat apparatus for casting according to claim 1, wherein The size of the filter storage tank is the same as that of the placement rack, and a filter screen is installed on it for filtering the paint after the coating is applied.
9. A flow-coat dip-coat apparatus for casting according to claim 1, wherein The flow coating tank also includes symmetrically arranged booms.
10. The flow-coat dip-coat apparatus for casting according to claim 1, wherein The dip-coating structure can also be equipped with a liquid detection device to control the amount of liquid used.