Investment casting sand shell coating device

Abstract

The utility model discloses an investment casting sand shell coating device which comprises a stuffing box, a platform is arranged at the bottom of the stuffing box, a limiting cylinder can be fixedly placed on the platform, a wax mold is placed in the limiting cylinder in a suspended mode from the upper portion, after the wax mold is placed in the limiting cylinder with the selected size in a suspended mode, sand is injected into the limiting cylinder through a sand blasting gun, and the sand shell coating device is formed. And the quantity limiting cylinder is taken out after the shell mold is formed, so that the unattached sand material is scattered into the stuffing box, can enter the material conveying channel through the discharging opening, and is conveyed into the material storage box through the spiral conveying shaft to be stored and repeatedly used.

Description

Technical Field

[0001] This utility model relates to the field of investment casting technology, and in particular to a sand shell coating device for investment casting. Background Technology

[0002] Casting is a metal heat treatment process, and many parts in industry today require casting. Investment casting requires the first step of creating a shell mold. This typically involves first creating a wax model of the part to be cast, which is then placed in sand or slurry composed mainly of refractory materials such as quartz and corundum. The sand or slurry dries around the wax model to form a shell mold. The wax model inside the shell mold is then melted, and the molten wax flows out, creating a casting cavity that conforms to the shape of the part. Molten iron is then poured into the cavity of the shell mold and cooled, completing the casting process.

[0003] Conventional sand-spreading devices are prone to incomplete coverage of complex casting wax models, resulting in incomplete shell molds. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a sand shell coating device for investment casting, which solves the current pain points in this field.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0006] A sand shell covering device for investment casting includes a filling box with a platform at the bottom. A measuring cylinder can be fixedly placed on the platform, and a wax model is suspended from above and placed into the measuring cylinder.

[0007] To further explain, a sandblasting gun is hinged to the upper edge of the stuffing box.

[0008] To further explain, the measuring cylinder is provided in different sizes, and different sizes of measuring cylinder are used for wax molds of different sizes.

[0009] To further explain, the sandblasting gun is connected to a storage tank, and an air pipe is connected to the sandblasting gun. The air pipe is connected to an air source, and the storage tank contains sand.

[0010] To further explain, a conveying tower is fixedly installed on the outside of the packing box, a discharge port is provided at the bottom of the packing box, a material conveying channel is provided at the bottom of the conveying tower, the bottom surface of the material conveying channel is inclined, the material conveying channel is connected to the discharge port and communicates with the packing box, a spiral conveying shaft is rotatably installed in the conveying tower, a conveying motor is fixedly installed on the top of the conveying tower and connected to the spiral conveying shaft, and the storage box is fixedly installed on the top of the conveying tower, with an opening on the top of the conveying tower communicating with the storage box.

[0011] To further explain, a partition door panel is hinged to the upper edge of the discharge port.

[0012] To further explain, a door stop is vertically slidably installed at the top of the material feeding channel, which can prevent the partition door from opening. A cylinder is fixedly installed on the side of the filling box and connected to the door stop, which can drive the door stop to move up and down.

[0013] In summary, the advantages of this utility model compared to the prior art are as follows: After the wax model is suspended in the selected size limiting cylinder, sand is injected into the limiting cylinder through a sandblasting gun, so that the sand covers the wax model and completely encapsulates it. After the shell mold is formed, the limiting cylinder is removed, and the unattached sand falls into the filling box and can enter the material passage through the discharge port. Then, it is sent to the storage box by the screw conveyor shaft for storage and repeated use. Attached Figure Description

[0014] The above and other objects, features, and advantages of the present invention will become readily apparent from the following detailed description of exemplary embodiments, taken in conjunction with the accompanying drawings. Several embodiments of the present invention are illustrated in the drawings by way of example and not limitation, in which:

[0015] Figure 1 This is a schematic diagram of a sand shell coating device for investment casting.

[0016] Explanation of reference numerals in the attached drawings: 10. Filler box; 11. Platform; 12. Measuring cylinder; 13. Sandblasting gun; 14. Air pipe; 15. Discharge port; 16. Dividing door panel; 17. Conveying tower; 18. Material conveying channel; 19. Door stop; 20. Cylinder; 21. Screw conveyor shaft; 22. Conveying motor; 23. Storage box; 24. Material conveying pipe. Detailed Implementation

[0017] The utility model will be further described in detail below with reference to the accompanying drawings.

[0018] A sand shell coating device for investment casting includes a filling box 10, with a platform 11 at the bottom of the filling box 10. A measuring cylinder 12 can be fixedly placed on the platform 11. The measuring cylinder 12 has different sizes, and different sizes of measuring cylinder 12 are used for wax molds of different sizes. The wax mold, hoisted by a robotic arm, is placed into the measuring cylinder 12 from above, but does not contact the measuring cylinder 12 or the platform 11. A sandblasting gun 13 is hinged to the upper edge of the filling box 10. The sandblasting gun 13 is connected to a storage box 23 via a 24, and an air pipe 14 is connected to the sandblasting gun 13. The air pipe 14 is connected to an air source. The storage box 23 contains sand, which is fed into the sandblasting gun 13 via the 24 and sprayed into the measuring cylinder 12 by the sandblasting gun 13. When the measuring cylinder 12 and the wax mold are placed into the filling box 10, the measuring cylinder 12 is flipped and erected to avoid obstruction.

[0019] A conveying tower 17 is fixedly installed on the outside of the packing box 10. A discharge port 15 is provided at the bottom of the packing box 10. A partition door 16 is hinged to the upper edge of the discharge port 15. A material passage 18 is provided at the bottom of the conveying tower 17. The bottom surface of the material passage 18 is inclined. The material passage 18 is connected to the discharge port 15 and communicates with the packing box 10. A screw conveyor shaft 21 is rotatably installed in the conveying tower 17. A conveying motor 22 is fixedly installed on the top of the conveying tower 17 and connected to the screw conveyor shaft 21. The sand in the packing box 10 can enter the material passage 18 through the discharge port 15 and enter the conveying tower 17 through the material passage 18. The rotation of the screw conveyor shaft 21 can lift the sand. A storage box 23 is fixedly installed on the top of the conveying tower 17. The top of the conveying tower 17 has an opening that communicates with the storage box 23. The sand is conveyed upward by the screw conveyor shaft 21 and sent into the storage box 23.

[0020] A door stop 19 is vertically slidably installed on the top of the material feeding channel 18. The door stop 19 can prevent the partition door 16 from opening. A cylinder 20 is fixedly installed on the side of the filling box 10 and connected to the door stop 19, which can drive the door stop 19 to move up and down.

[0021] The above description is merely an exemplary embodiment of the present utility model and is not intended to limit the scope of protection of the present utility model. The scope of protection of the present utility model is determined by the appended claims.

Claims

1. A sand shell coating device for investment casting, characterized in that: Includes a filling box (10), the bottom of which is provided with a platform (11), on which a measuring cylinder (12) can be fixedly placed, and the wax model is suspended from above and placed into the measuring cylinder (12).

2. The sand shell coating device for investment casting according to claim 1, characterized in that: A sandblasting gun (13) is hinged to the upper edge of the filling box (10).

3. The sand shell coating device for investment casting according to claim 1, characterized in that: The measuring cylinder (12) is provided in different sizes, and different sizes of the measuring cylinder (12) are used for wax molds of different sizes.

4. The sand shell coating device for investment casting according to claim 2, characterized in that: The sandblasting gun (13) is connected to the storage tank (23), and the sandblasting gun (13) is connected to the air pipe (14), which is connected to the air source. The storage tank (23) contains sand.

5. The sand shell coating device for investment casting according to claim 4, characterized in that: A conveying tower (17) is fixedly installed on the outside of the packing box (10). A discharge port (15) is provided at the bottom of the packing box (10). A material conveying channel (18) is provided at the bottom of the conveying tower (17). The bottom surface of the material conveying channel (18) is inclined. The material conveying channel (18) is connected to the discharge port (15) and communicates with the packing box (10). A screw conveying shaft (21) is rotatably installed in the conveying tower (17). A conveying motor (22) is fixedly installed on the top of the conveying tower (17) and connected to the screw conveying shaft (21). A storage box (23) is fixedly installed on the top of the conveying tower (17). An opening is provided on the top of the conveying tower (17) and communicates with the storage box (23).

6. The sand shell coating device for investment casting according to claim 5, characterized in that: A partition door panel (16) is hinged to the upper edge of the discharge port (15).

7. The sand shell coating device for investment casting according to claim 6, characterized in that: A door stop (19) is vertically slidably installed on the top of the material feeding channel (18). The door stop (19) can prevent the partition door (16) from opening. A cylinder (20) is fixedly installed on the side of the filling box (10) and connected to the door stop (19), which can drive the door stop (19) to move up and down.

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