Model coating device for lost foam casting

Abstract

The utility model relates to the field of casting equipment, in particular to a model coating device for lost foam casting, which comprises a dip-coating component, a spraying component, an air drying component, a hanging component and a support, the dip-coating component is provided with a dip-coating barrel, and the spraying component and the air drying component are respectively provided with a spraying barrel and an air drying barrel. The spraying cylinder and the air drying cylinder are provided with a nozzle and an air sleeve respectively, and the hanging assembly is provided with a hanging rod capable of rotating and moving up and down. The air drying barrel, the spraying barrel and the dip-coating barrel are overlapped from top to bottom and are in through connection, so that paint falling during air drying and spraying can flow back into the dip-coating barrel to be continuously used; the hanging rod of the hanging assembly can rotate and move up and down to drive the hung lost foam to be sequentially placed in the dip-coating barrel, the air drying barrel, the spraying barrel and the air drying barrel to be subjected to dip-coating, air drying, spraying and re-air drying to quickly complete secondary coating, so that the working efficiency and the coating quality can be improved, the labor intensity can be reduced, and the material waste can be reduced.

Description

Technical Field

[0001] The utility model relates to the field of casting equipment, in particular to a model coating device used in lost foam casting. Background Art

[0002] Lost foam casting is a new casting method that uses foam plastic polymer materials to make a lost foam model, which is coated with refractory coating and dried, buried in quartz sand in a sand box, and poured with high-temperature molten metal under negative pressure to make the lost foam model vaporize and be replaced by liquid metal. The liquid metal cools and solidifies to form a casting. The refractory coating applied on the surface of the lost foam model mainly plays the role of strengthening, smoothing and air permeability. The coating generally needs to be applied twice. At present, most of the coating methods are manually brushing or dipping once and then drying, then brushing or scraping a second time, and then drying or drying. This method has high labor intensity, low efficiency, high material waste, and sometimes unevenness. Therefore, people hope to have a coating device that combines dipping, spraying and air drying to improve operating efficiency and coating quality, reduce labor intensity and reduce material waste. In view of this, this case is generated. Utility Model Content

[0003] In order to overcome the deficiencies in the prior art, the utility model discloses a model coating device for lost foam casting, comprising a dipping component, a spraying component, an air-drying component, a hanging component and a bracket, wherein the dipping component is provided with a dipping barrel which is open upward, the spraying component and the air-drying component are respectively provided with a spraying cylinder and an air-drying cylinder which are open both above and below, the spraying cylinder and the air-drying cylinder are respectively provided with a nozzle and an air sleeve; the air-drying component, the spraying component and the dipping component are sequentially connected from top to bottom and the inner cavities are connected; the hanging component is provided with a rotatable and up-and-down movable hanging rod, which can move and rotate the hung lost foam model in the cavities of the dipping component, the spraying component and the air-drying component to perform dipping, spraying and air-drying. The utility model is designed for a model coating device used in lost foam casting, which connects an air-drying component, a dipping component and a spraying component in sequence from top to bottom, wherein the inner cavities of the air-drying cylinder, the spraying cylinder and the dipping barrel are mutually interpenetrating, and the air-drying cylinder, the spraying cylinder and the dipping barrel are stacked and connected from top to bottom, so that the coating dropped during air-drying and spraying can flow back into the dipping barrel for continuous use; the hanging rod of the hanging component is suspended in the air-drying cylinder, the spraying cylinder and the dipping barrel, and the hanging rod of the hanging component can be rotated and moved up and down to drive the hanging lost model to be placed in the dipping barrel, the air-drying cylinder, the spraying cylinder and the air-drying cylinder in sequence for dipping, air-drying, spraying and air-drying again, so as to quickly complete two-pass coating, thereby improving operation efficiency and coating quality, reducing labor intensity and reducing material waste.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0005] A model coating device for lost foam casting comprises a bracket, characterized in that it also comprises a dipping component, a spraying component, an air-drying component and a hanging component, the dipping component is provided with a cavity container open upward, the container can contain liquid coating for coating the surface of the lost model, the spraying component and the air-drying component are both provided with a cylindrical cavity part open at the top and the bottom, the spraying component is provided with a spraying component on the inner wall of its cavity, the air-drying component is provided with a blowing component on the inner wall of its cavity, the air-drying component, the spraying component and the dipping component are connected in sequence from top to bottom and the inner cavities of the three are connected, the hanging component is provided with a hanging rod that can rotate and move up and down, the hanging component can hang the lost model and can drive the lost model to move up and down and rotate in the cavity of the dipping component, the spraying component and the air-drying component to perform dipping, spraying and air-drying, the dipping component, the spraying component, the air-drying component and the hanging component are all placed in the bracket, and the dipping component and the hanging component are both fixed to the bracket.

[0006] The dipping assembly includes a dipping barrel, a feed port and a drain port. The dipping barrel is a circular barrel-shaped body with an opening facing upward and a narrowing opening. The feed port and the drain port are respectively fixed to the upper and lower parts of the dipping barrel, and a drain valve is provided on the drain port.

[0007] The spray assembly includes a spray barrel and a nozzle. The spray barrel is a cylindrical body with open top and bottom. The nozzle is a plurality of pieces, and the plurality of nozzles are dispersed and fixed on the inner wall of the drum of the spray barrel. The nozzle is an air spray gun that can automatically spray paint. The nozzle can be connected to an external paint pool and a pumping component to spray paint onto the disappearing model.

[0008] The lower part of the spraying tube is inserted into the open mouth of the dipping barrel, and the spraying tube is detachably fixed to the dipping barrel.

[0009] The air-drying component includes an air-drying cylinder and an air sleeve. The air-drying cylinder is a drum-shaped cylindrical body that is open at the top and bottom. The air sleeve is a drum-shaped hollow sleeve-shaped closed cavity formed by a drum-shaped outer ring wall, a drum-shaped inner ring wall and end walls at both ends. A plurality of air outlet holes are densely arranged on the drum-shaped inner ring wall of the air sleeve. The air sleeve is also provided with an air inlet connected to an external compressed air source. The air sleeve is fixedly connected to the inner wall of the air-drying cylinder, and the air sleeve can blow air toward the disappearing model.

[0010] The air drying cylinder is fixedly connected to the spraying cylinder.

[0011] The hanging assembly includes a linear module, a cantilever, a suspension rod and a rotating cylinder. The cantilever includes a horizontal plate and a vertical plate fixed to one end of the horizontal plate, and the other end of the horizontal plate is suspended. The suspension rod is a rigid rod with a hanger at the lower end. The hanger can be a clamp or a hook. The upper end of the suspension rod is rotatably connected to the suspended end of the horizontal plate of the cantilever. The cylinder rod of the rotating cylinder is connected to the upper end of the suspension rod, and the cylinder body of the rotating cylinder is fixed to the horizontal plate of the cantilever. The rotating cylinder can drive the suspension rod to rotate. The linear module is placed upright on one side of the cantilever, and the vertical plate of the cantilever is locked on several sliders provided with the linear module.

[0012] The linear module is vertically fixed on the bracket.

[0013] From the above description, it can be known that the advantages of the model coating device for lost foam casting provided by the utility model are: the air-drying component, the dipping component and the spraying component are connected in sequence from top to bottom, the inner cavities of the air-drying cylinder, the spraying cylinder and the dipping barrel are mutually connected, and the hanging rod of the hanging component is suspended in the air-drying cylinder, the spraying cylinder and the dipping barrel. First, the hanging rod of the hanging component can be rotated and moved up and down to drive the hanging lost model to be placed in the dipping barrel, the air-drying cylinder, the spraying cylinder, and the air-drying cylinder in sequence for dipping, air-drying, spraying, and air-drying to quickly complete the second coating, thereby improving the working efficiency and coating quality and reducing the labor intensity; second, the air-drying cylinder, the spraying cylinder and the dipping barrel are stacked and connected from top to bottom, so that the paint dropped during air-drying and spraying can flow back to the dipping barrel for continued use, which can reduce material waste. The utility model has a reasonable design, a simple structure, low cost, and is easy to promote. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a general schematic diagram of a model coating device used in lost foam casting according to the utility model;

[0015] Figure 2 is an enlarged schematic diagram of a dip-coating component;

[0016] Figure 3 is an enlarged schematic diagram of the spraying assembly;

[0017] Figure 4 is an enlarged schematic diagram of the air-drying component;

[0018] Figure 5 for Figure 4 A magnified schematic diagram of part A in FIG.

[0019] Figure 6 is an enlarged schematic diagram of the hanging assembly;

[0020] Figure 7 for Figure 6 An enlarged schematic diagram of part B in FIG.

[0021] Reference numerals:

[0022] 1 Dipping assembly; 11 Dipping barrel; 12 Feed inlet; 13 Drain outlet; 2 Spraying assembly; 21 Spraying cylinder; 22 Nozzle; 3 Air drying assembly; 31 Air drying cylinder; 32 Air sleeve; 321 Air outlet; 322 Air inlet; 4 Hanging assembly; 41 Linear module; 42 Cantilever; 43 Hanging rod; 44 Rotating cylinder; 5 Bracket; 900 Vanishing model. DETAILED DESCRIPTION

[0023] The present invention is further described below through specific implementation methods.

[0024] like Figure 1 As shown, the utility model discloses a model coating device for lost foam casting, comprising a dipping component 1, a spraying component 2, an air drying component 3, a hanging component 4 and a bracket 5. The dipping component 1 is provided with a cavity container with an open top, and the container can contain liquid coating for coating the surface of the lost foam model 900. The spraying component 2 and the air drying component 3 are both provided with a cylindrical cavity part with upper and lower openings. The spraying component 2 is provided with a spraying component on the inner wall of its cavity, and the air drying component 3 is provided with a blowing component on the inner wall of its cavity. The air-drying component 3, the spraying component 2 and the dipping component 1 are connected in sequence from top to bottom and the inner cavities of the three are connected. The hanging component 4 is provided with a rotatable and movable hanging rod. The hanging component 4 can hang the disappearing model 900 and can drive the disappearing model 900 to move up and down and rotate in the cavity of the dipping component 1, the spraying component 2 and the air-drying component 3 to perform dipping, spraying and air drying. The dipping component 1, the spraying component 2, the air-drying component 3 and the hanging component 4 are all placed in the bracket 5, and the dipping component 1 and the hanging component 4 are both fixedly connected to the bracket 5.

[0025] like Figure 1 and Figure 2 As shown, the dipping assembly 1 described in the utility model includes a dipping barrel 11, a feed port 12 and a drain port 13. The dipping barrel 11 is a circular barrel-shaped body with an opening facing upward and a narrowed opening. The feed port 12 and the drain port 13 are respectively fixedly connected to the upper and lower parts of the dipping barrel 11, and a drain valve is provided on the drain port 13.

[0026] like Figures 1 to 3 As shown, the spray assembly 2 of the utility model includes a spray barrel 21 and a nozzle 22. The spray barrel 21 is a cylindrical body with open top and bottom. The nozzle 22 is a plurality of pieces, and the plurality of nozzles 22 are dispersed and fixed on the inner wall of the drum of the spray barrel 21. The nozzle 22 is an air spray gun that can automatically spray paint. The nozzle 22 can be connected to an external paint pool and a pumping member to spray paint to the disappearing model 900. The lower part of the spray barrel 21 is inserted into the open end of the dipping barrel 11, and the spray barrel 21 is detachably fixed to the dipping barrel 11.

[0027] like Figure 1 , Figures 3 to 5 As shown, the air-drying component 3 described in the utility model includes an air-drying cylinder 31 and an air sleeve 32. The air-drying cylinder 31 is a drum-shaped cylindrical body which is open at the top and bottom. The air sleeve 32 is a drum-shaped hollow sleeve-shaped closed cavity body formed by a drum-shaped outer ring wall, a drum-shaped inner ring wall and end walls at both ends. A plurality of air outlet holes 321 are densely arranged on the drum-shaped inner ring wall of the air sleeve 32. The air sleeve 32 is also provided with an air inlet 322 connected to an external compressed air source. The air sleeve 32 is fixedly connected to the inner wall of the air-drying cylinder 31. The air sleeve 32 can blow air toward the disappearing model 900. The air-drying cylinder 31 is fixedly connected to the spray cylinder 21.

[0028] like Figure 1 , Figure 6 and Figure 7 As shown, the hanging assembly 4 described in the utility model includes a linear module 41, a cantilever 42, a suspension rod 43 and a rotating cylinder 44. The cantilever 42 includes a horizontal plate and a vertical plate fixed to one end of the horizontal plate, and the other end of the horizontal plate is suspended. The suspension rod 43 is a rigid rod with a hanger at the lower end, and the hanger can be a clamp or a hook. The upper end of the suspension rod 43 is rotatably connected to the suspended end of the horizontal plate of the cantilever 42. The cylinder rod of the rotating cylinder 44 is connected to the upper end of the suspension rod 43, and the cylinder body of the rotating cylinder 44 is fixed to the horizontal plate of the cantilever 42. The rotating cylinder 44 is a well-known technology. The rotating cylinder 44 can drive the suspension rod 43 to rotate. The linear module 41 is upright on one side of the cantilever 42, and the vertical plate of the cantilever 42 is locked on several sliders provided with the linear module 41. The linear module 41 is vertically fixed on the bracket 5. The linear module 41 is a well-known technology. The linear module 41 of this embodiment is a ball screw type linear module, and its own slider can perform linear motion under the drive of the screw nut.

[0029] All execution actions of the hanging component 4, the spraying component 2 and the air-drying component 3 can be controlled manually or by setting up an automatic control system.

[0030] The method for using the model coating device for lost foam casting described in the utility model is as follows:

[0031] The vanishing model 900 to be coated with paint is fixed with a hanger at the lower end of the suspension rod 43; the linear module 41 is started to drive the cantilever 42 to drive the suspension rod 43 to move downward, so that the vanishing model 900 enters the dipping barrel 11 and is immersed in the liquid paint in the barrel for dipping.

[0032] After the dipping is completed, the suspension rod 43 moves upward to allow the disappearing model 900 to enter the air drying cylinder 31; the external compressed air source connected to the air sleeve 32 is turned on to supply air to the air sleeve 32 and the rotating cylinder 44 is turned on, and the compressed air is sprayed through the air outlet 321 of the air sleeve 32 to the disappearing model 900 that is constantly rotating in the air drying cylinder 31, so that the disappearing model 900 can be quickly dried and the first coating on the surface of the disappearing model 900 is completed.

[0033] Then move the vanishing model 900 downward into the spray barrel 21; turn on the paint pumping mechanism connected to the outside of the nozzle 22 and turn on the rotating cylinder 44, so that several nozzles 22 can spray paint onto the outer surface of the vanishing model 900 that is continuously rotating in the spray barrel 21; then move the sprayed vanishing model 900 upward to the air-drying barrel 31 for secondary air-drying, thereby completing the second coating on the surface of the vanishing model 900.

[0034] The model coating device designed by the utility model for lost foam casting connects the air-drying component 3, the dipping component 1 and the spraying component 2 in sequence from top to bottom, and the inner cavities of the air-drying cylinder 31, the spraying cylinder 21 and the dipping barrel 11 are interconnected. The air-drying cylinder 31, the spraying cylinder 21 and the dipping barrel 11 are stacked and connected from top to bottom, so that the paint dropped during air-drying and spraying can flow back into the dipping barrel 11 for continued use; the hanging rod 43 of the hanging component 4 is suspended in the air-drying cylinder 31, the spraying cylinder 21 and the dipping barrel 11, and the hanging rod 43 of the hanging component 4 can be rotated and moved up and down to drive the lost model 900 hung thereon to be placed in the dipping barrel 11, the air-drying cylinder 31, the spraying cylinder 21 and the air-drying cylinder 31 in sequence for dipping, air-drying, spraying and air-drying to quickly complete the second coating, thereby improving the working efficiency and coating quality, reducing the labor intensity and reducing the waste of materials.

[0035] The above is only a specific embodiment of the present utility model, but the design concept of the present utility model is not limited to this. Any non-substantial changes to the present utility model using this concept shall be deemed as an infringement of the protection scope of the present utility model.

Claims

1. A pattern coating device for lost foam casting, comprising a bracket (5), characterized in that: The invention also comprises a dipping assembly (1), a spraying assembly (2), an air-drying assembly (3) and a hanging assembly (4); the dipping assembly (1) is provided with a cavity container which is open upwards, and the container can contain liquid coating for coating the surface of the disappearing model (900); the spraying assembly (2) and the air-drying assembly (3) are both provided with a cylindrical cavity which is open at the top and the bottom; the spraying assembly (2) is provided with a spraying component on the inner wall of its cavity; the air-drying assembly (3) is provided with a blowing component on the inner wall of its cavity; the air-drying assembly (3), the spraying assembly (2) and the dipping assembly are provided with a cavity container which is open upwards, and the cavity container can contain liquid coating for coating the surface of the disappearing model (900); the spraying assembly (2) and the air-drying assembly (3) are both provided with a cylindrical cavity which is open at the top and the bottom; the spraying assembly (2) is provided with a spraying component on the inner wall of its cavity; the air-drying assembly (3), the spraying assembly (2) and the dipping assembly are provided with a cavity container which is open upwards; the air-drying assembly (3) and the air-drying assembly (4) ... The components (1) are connected in sequence from top to bottom and the inner cavities of the three components are connected. The hanging component (4) is provided with a hanging rod that can rotate and move up and down. The hanging component (4) can hang the disappearing model (900) and can drive the disappearing model (900) to move up and down and rotate in the cavities of the dipping component (1), the spraying component (2) and the air-drying component (3). The dipping component (1), the spraying component (2), the air-drying component (3) and the hanging component (4) are all placed in the bracket (5), and the dipping component (1) and the hanging component (4) are both fixedly connected to the bracket (5).

2. A pattern coating device for lost foam casting according to claim 1, characterized in that: The dipping assembly (1) comprises a dipping barrel (11), a feed inlet (12) and a drain outlet (13); the dipping barrel (11) is a circular barrel-shaped body with an opening facing upward and a narrowing opening; the feed inlet (12) and the drain outlet (13) are respectively fixed to the upper and lower parts of the dipping barrel (11); and a drain valve is provided on the drain outlet (13).

3. A pattern coating device for lost foam casting according to claim 2, characterized in that: The spray assembly (2) comprises a spray barrel (21) and a nozzle (22). The spray barrel (21) is a cylindrical body with openings at the top and bottom. The nozzle (22) is a plurality of pieces. The plurality of nozzles (22) are dispersed and fixedly connected to the inner wall of the drum of the spray barrel (21).

4. A pattern coating device for lost foam casting according to claim 3, characterized in that: The lower part of the spraying tube (21) is inserted into the open opening of the dipping barrel (11), and the spraying tube (21) is detachably fixed to the dipping barrel (11).

5. A pattern coating device for lost foam casting according to claim 4, characterized in that: The air-drying component (3) comprises an air-drying cylinder (31) and an air sleeve (32); the air-drying cylinder (31) is a drum-shaped cylindrical body which is open at the top and the bottom; the air sleeve (32) is a drum-shaped hollow sleeve-shaped closed cavity body which is surrounded by a drum-shaped outer ring wall, a drum-shaped inner ring wall and end walls at both ends; a plurality of air outlet holes (321) are densely arranged on the drum-shaped inner ring wall of the air sleeve (32); the air sleeve (32) is also provided with an air inlet (322); and the air sleeve (32) is fixedly connected to the inner wall of the air-drying cylinder (31).

6. A pattern coating device for lost foam casting according to claim 5, characterized in that: The air drying cylinder (31) is fixedly connected to the spraying cylinder (21).

7. A pattern coating device for lost foam casting according to claim 6, characterized in that: The hanging assembly (4) includes a linear module (41), a cantilever (42), a suspension rod (43) and a rotary cylinder (44). The cantilever (42) includes a transverse plate and a vertical plate fixed to one end of the transverse plate, and the other end of the transverse plate is suspended. The suspension rod (43) is a rigid rod with a hanger at the lower end. The upper end of the suspension rod (43) is rotatably connected to the suspended end of the transverse plate of the cantilever (42). The cylinder rod of the rotary cylinder (44) is connected to the upper end of the suspension rod (43), and the cylinder body of the rotary cylinder (44) is fixed to the transverse plate of the cantilever (42). The linear module (41) is vertically placed on one side of the cantilever (42), and the vertical plate of the cantilever (42) is locked on a plurality of sliders provided on the linear module (41).

8. A pattern coating device for lost foam casting according to claim 7, characterized in that: The linear module (41) is vertically fixed on the bracket (5).

Images