Slush-wind drying all-in-one machine for precision casting and method of use thereof

Abstract

The application discloses a spraying and air-drying integrated machine for precision casting and a use method thereof, which comprises an air supply pipe, an opening part, a hook, an air cylinder, a storage tank, a cylinder body, a cover plate, a bottom one-way valve and a side one-way valve. The opening part is arranged at the bottom of the air supply pipe. The air cylinder is arranged at the top of the storage tank. The piston rod of the air cylinder extends into the storage tank from the center of the bottom of the storage tank. The bottom of the cylinder body is fixedly connected with the piston rod. The top of the cylinder body is open and faces the hook. The cover plate is fixedly connected with the top of the storage tank and a window is left in the center of the cover plate for the cylinder body to extend out. The bottom valve is arranged at the bottom of the cylinder body. The side one-way valve is arranged below the outer side wall. The pressurizing port is arranged on the cover plate. The spraying ports are uniformly distributed on the inner side wall. The application has the beneficial effect that the existing manual brushing and hanging slurry mode is changed into automatic spraying, and the spraying is linked with air-drying, the processing time of hanging slurry and air-drying is shortened, and the consistency effect of hanging slurry is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of bronze sculpture casting auxiliary equipment, and particularly relates to a spraying and air-drying integrated machine for precision casting and a use method thereof. BACKGROUND

[0002] The slurry dipping and shell making is the fifth link in the precision casting process, and the process is relatively complex. When the casting shell is made, the model shell is dipped in slurry. When a large model is cast, the slurry needs to be dipped multiple times. After each dipping, the model is dried, and then the slurry is dipped again. This process is repeated multiple times to thicken the model. Specifically, the process includes cleaning, dipping the first layer of slurry, dipping the first layer of sand, drying, wetting, dipping the second layer of slurry, dipping the second layer of sand, drying, dipping the third layer of slurry, dipping the third layer of sand, drying, dipping the fourth layer of slurry, dipping the fourth layer of sand, drying, dipping the fifth layer of slurry, drying, and dewaxing. The existing slurry dipping method is to slowly and carefully immerse the cleaned wax string in the first layer of slurry at an angle of 30-60 degrees (with respect to the horizontal line), ensuring that the wax string is completely immersed and does not touch the barrel wall or stirring rod. The wax string is kept for 2-4 seconds, and the surface bubbles are floated up. The wax string is slowly and carefully taken out, and the slurry is evenly applied to every part of the wax model and wax string by rotating the wax string. The slurry is applied to the sharp corners, holes, narrow gaps, and characters by brushing or low-pressure air gun blowing. The entire operation requires a high level of detail and operation skill, and different workers will produce different slurry dipping effects. There is no special equipment to automatically dip the slurry of the model.

[0003] Chinese patent CN109261908B discloses a mold shell making and baking method, which includes the following steps: (1) making a wax product group tree and cleaning; (2) making a face layer shell, coating paint on the tree string, and then spraying a layer of 80-100 mesh zirconium sand on the surface of the paint, and then naturally air-drying for 4-6 hours; (3) making a back layer shell, coating paint on the tree string, and then spraying a layer of 30-60 or 16-30 mesh mullite sand on the surface of the paint, and then naturally air-drying for 8-12 hours; (4) repeating the above actions 7-8 times to form a mold shell with a thickness of 9.5-10.5 mm; the slurry coating and air-drying of the method still need to be manually operated, which cannot guarantee the consistency of the slurry coating effect, and the operation is complicated and labor-intensive. SUMMARY

[0004] The technical problem to be solved by the present application is that the existing model slurry dipping needs to be manually operated, the slurry coating consistency is poor, the operation is complicated, and the labor intensity is high. Therefore, the present application provides a spraying and air-drying integrated machine for precision casting and a use method thereof.

[0005] The technical scheme of the present application is: a spraying and air-drying integrated machine for precision casting, comprising: an air supply pipe, one end of which is open and the other end is closed; an opening part, which is arranged at the bottom of the air supply pipe; a hook, which is fixed to the top of the air supply pipe and faces the opening part; a support, which is arranged at both ends of the air supply pipe; a base, which is fixed to the bottom of the support; an air cylinder, which is arranged in the center of the base; a storage tank, which is arranged on the top of the air cylinder, and the piston rod of the air cylinder extends into the storage tank from the center of the bottom of the storage tank; a cylinder body, which is fixed to the bottom of the piston rod, the top of the cylinder body is open and faces the hook, and the side wall of the cylinder body comprises an outer side wall and an inner side wall, and a hollow layer is formed between the outer side wall and the inner side wall; a cover plate, which is fixed to the top of the storage tank and has a window in the center for the cylinder body to extend out; a bottom one-way valve, which is arranged at the bottom of the cylinder body; a side one-way valve, which is arranged below the outer side wall; a pressurizing port, which is arranged on the cover plate; and spraying ports, which are uniformly distributed on the inner side wall.

[0006] The improvement of the above scheme is that the bottom of the opening part extends downward to form a drainage pipe, and the inner diameter of the drainage pipe is greater than the outer diameter of the cylinder body.

[0007] The further improvement of the above scheme is that a spray head is arranged on the spraying port.

[0008] In the above scheme, the support is a telescopic rod.

[0009] The further improvement of the above scheme is that a fan is connected to the open end of the air supply pipe, and a proximity switch is arranged in the air supply pipe and connected to the fan.

[0010] The use method of the spraying and air-drying integrated machine for precision casting comprises the following steps: the storage tank stores slurry with a liquid level higher than the side one-way valve, compressed air is injected into the storage tank through the pressurizing port, the slurry in the storage tank is injected into the hollow layer and the cylinder body through the side one-way valve, the wax string to be sprayed is hung on the hook, the air cylinder is started, the piston rod pushes the cylinder body to rise and accommodate the wax string, the bottom one-way valve is opened, the slurry in the cylinder body flows into the storage tank, the spraying ports spray the slurry to the wax string, when the spraying stops, the air cylinder drives the piston rod to descend, the cylinder body descends to the original position, the fan is started to dry the wax string, and one spraying and air-drying is completed.

[0011] The present application has the beneficial effect of changing the existing manual brushing and spraying method to automatic spraying, and the spraying is linked with air-drying, which shortens the processing time of spraying and air-drying and improves the consistency of spraying. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 is a schematic view of the spraying and air-drying integrated machine of the present application;

[0013] Figure 2is a schematic diagram of the use state of the shotcrete air-drying integrated machine of the present application;

[0014] Figure 3 is Figure 1 a middle cylinder body schematic diagram;

[0015] Figure 4 is Figure 1 a middle storage tank schematic diagram;

[0016] In the figure, 1, air supply pipe, 2, opening part, 3, hook, 4, support, 5, base, 6, cylinder, 7, storage tank, 8, cylinder body, 9, cover plate, 10, bottom one-way valve, 11, side one-way valve, 12, pressurizing port, 13, shotcrete port, 14, drainage pipe. Embodiment

[0017] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments that can be obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0018] As Figures 1-4 shown, the shotcrete air-drying integrated machine for precision casting comprises: an air supply pipe 1, one end of which is open and the other end of which is closed; an opening part 2, which is provided at the bottom of the air supply pipe, the structure of the air supply pipe ensuring that air enters from the air supply pipe and is discharged from the opening part, in the process of which the wax string is blown by the air to improve the air-drying efficiency; a hook 3, which is fixedly connected to the top inside of the air supply pipe and faces the opening part, the hook being used for hanging the wax string; two supports 4, which are respectively located at the two ends of the air supply pipe; a base 5, which is fixedly connected to the bottom of the supports and is used for supporting the air supply pipe; a cylinder 6, which is arranged in the center of the base; a storage tank 7, which is located at the top of the cylinder, the piston rod of the cylinder extending into the storage tank from the center of the bottom of the storage tank; a cylinder body 8, the bottom of which is fixedly connected to the piston rod, the top of the cylinder body being open and facing the hook, the side wall of the cylinder body comprising an outer side wall and an inner side wall, a hollow layer being formed between the outer side wall and the inner side wall, which can enter the opening part when the cylinder body rises to block the air in the air supply pipe and the wax string; a cover plate 9, which is fixedly connected to the top of the storage tank and has a window in the center for the cylinder body to extend out; a bottom one-way valve 10, which is installed at the bottom of the cylinder body and is used for discharging the slurry in the cylinder body into the storage tank for recycling; a side one-way valve 11, which is installed below the outer side wall and is used for introducing the slurry in the storage tank into the hollow layer and the cylinder body; a pressurizing port 12, which is provided on the cover plate and is used for pressurizing the space formed by the storage tank and the cylinder body to ensure that the slurry enters the hollow layer and the cylinder body and maintains a certain liquid level; and shotcrete ports 13, which are uniformly distributed on the inner side wall, the distribution area of the shotcrete ports being appropriate to ensure that the wax string is uniformly sprayed.

[0019] The method for using the slurry spraying and air drying integrated machine for precision casting comprises the following steps: the slurry with liquid surface exceeding the side one-way valve is stored in the storage tank, the compressed air is injected into the storage tank through the pressurizing port, the slurry in the storage tank is injected into the hollow layer and the cylinder through the side one-way valve, the wax string to be hung with slurry is hung on the hook, the air cylinder is started, the piston rod pushes the cylinder to rise to accommodate the wax string, the bottom one-way valve is opened, the slurry in the cylinder flows into the storage tank, the slurry is sprayed to the wax string through the spraying port, after the slurry in the spraying port stops spraying, the air cylinder drives the piston rod to descend, the cylinder descends to the original position, the fan is started to dry the wax string, and one-time slurry spraying and air drying are completed. The operation is cycled for several times, and the operation of multiple slurry hanging and air drying can be completed.

[0020] In order to improve the air drying effect, the preferred example of the present application is that the bottom of the opening part extends downward to form a drainage pipe 14, the inner diameter of the drainage pipe is greater than the outer diameter of the cylinder, and the wax string is hung in the drainage pipe.

[0021] In order to improve the uniformity of slurry spraying, the preferred example of the present application is that the spraying port is provided with a spray head.

[0022] In order to adapt to the length of different wax strings, the preferred example of the present application is that the support is a telescopic rod, and the height difference between the air supply pipe and the storage tank is adjusted by telescoping.

[0023] In order to save energy, the preferred example of the present application is that the opening end of the air supply pipe is communicated with a fan, and the air supply pipe is provided with a proximity switch linked with the fan. When the proximity switch detects that the cylinder enters the air supply pipe, a signal is sent to the fan to stop air supply. When the cylinder leaves the air supply pipe, the fan works again.

Claims

1. A combined shot blasting and air drying machine for precision casting, characterized in that it comprises: The air supply pipe (1) has an open end and a closed end; an opening part (2) is arranged at the bottom of the air supply pipe; A hook (3) is fixed to the inner top of the air supply pipe and faces the opening part; a support (4) is arranged at both ends of the air supply pipe; a base (5) is fixed to the bottom of the support; a cylinder (6) is arranged at the center of the base; a storage tank (7) is arranged at the top of the cylinder, and the piston rod of the cylinder extends into the storage tank from the center of the bottom of the storage tank; A cylinder body (8) is fixed to the piston rod at the bottom, and the top of the cylinder body is open and faces the hook; the side wall of the cylinder body includes an outer side wall and an inner side wall, and a hollow layer is formed between the outer side wall and the inner side wall; A cover plate (9) is fixed to the top of the storage tank and has a window in the center for the cylinder body to extend out; a bottom one-way valve (10) is arranged at the bottom of the cylinder body; a side one-way valve (11) is arranged below the outer side wall; a pressurizing port (12) is arranged on the cover plate; and a spraying port (13) is uniformly arranged on the inner side wall.

2. The integrated shot blasting and air drying machine for precision casting according to claim 1, characterized in that: The bottom of the opening part extends downward to form a drainage pipe (14), and the inner diameter of the drainage pipe is larger than the outer diameter of the cylinder body.

3. The integrated shot blasting and air drying machine for precision casting according to claim 1, characterized in that: A nozzle is arranged on the spraying port.

4. The integrated shot blasting and air drying machine for precision casting according to claim 1, characterized in that: The support is a telescopic rod.

5. The integrated shot blasting and air drying machine for precision casting according to claim 4, characterized in that: A fan is connected to the open end of the air supply pipe, and a proximity switch is arranged in the air supply pipe and connected to the fan.

6. The method of using the slush drying integrated machine for precision casting according to any one of claims 1-5, characterized in that: The method comprises the following steps: The storage tank stores slurry with a liquid surface higher than the side one-way valve; compressed air is injected into the storage tank through the pressurizing port, the slurry in the storage tank is injected into the hollow layer and the cylinder body through the side one-way valve, the wax string to be hung is hung on the hook, the cylinder is started, the piston rod pushes the cylinder to rise to accommodate the wax string, the bottom one-way valve is opened, the slurry in the cylinder flows into the storage tank, the spraying port sprays the slurry to the wax string, when the slurry in the spraying port stops spraying, the cylinder drives the piston rod to descend, the cylinder descends to the original position, the fan is started to dry the wax string, and one spraying and drying is completed.

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