Sand spraying and floating all-in-one machine for sand shell preparation

Abstract

The utility model provides a sand spraying and floating all-in-one machine for sand shell preparation. The sand spraying and floating all-in-one machine comprises a machine cover, the sand hanging bin is arranged at the bottom in the machine cover; the gas pumping system is communicated with the sand hanging bin and can input high-pressure gas; the shakeout system comprises a shakeout bin and isolation equipment; the lifting system is used for lifting the sand body in the shakeout bin to the upper layer of the machine cover from bottom to top; and the sand spraying and uniform falling system is used for uniformly spraying the lifted sand bodies into the sand hanging bin. The sand hanging bin is matched with the gas pumping system, a floating sand mode is formed in the sand hanging bin, and floating sand hanging operation can be carried out; or a circulating sand spraying mode can be formed through the sand spraying bin, the sand shakeout system, the lifting system and the sand spraying uniform falling system, sand spraying operation can be carried out, the sand floating mode and the sand spraying mode can be achieved, sand floating and sand spraying are uniform in the sand floating mode, sand spraying is uniform in the sand spraying mode, the sand spraying quality is guaranteed, and the sand spraying efficiency is improved. The combination of the two functions is more universal for sand hanging of wax molds in various shapes.

Description

[Technical field]

[0001] The utility model relates to the technical field of precision casting, in particular to a sand sprinkling and floating integrated machine for preparing sand shells. [Background technology]

[0002] Precision casting is a special casting method compared to traditional casting process. It can obtain relatively accurate shape and high casting accuracy. Shell making is one of the important processes in the casting process. After the wax model is made, the coating and sanding processes are repeated on the wax model, and sand is hung on the wax model. After the sand material dries and hardens, a shell is formed, which is shell making.

[0003] There are two commonly used sanding methods: sand sprinkling and floating sand, and the corresponding equipment is sand sprinkling machine and floating sand machine. Since sand sprinkling and floating sand have their own advantages and disadvantages, different sand sprinkling methods should be used for modules of different sizes and shapes, and a single sand sprinkling machine and floating sand machine can only achieve one method. At present, sand sprinkling and floating sand integrated equipment has been developed on the market, but the sand sprinkling action in the sand sprinkling operation of this equipment is not uniform and delicate, which results in poor quality of sand sprinkling and hanging sand on the wax model. Uneven sand sprinkling can easily lead to uneven thickness of the shell mold. If the sand sprinkling is too urgent, it will cause excessive impact force, wash away the wax model, and even damage the wax model.

[0004] In view of the above problems, the applicant has proposed a solution. [Contents of the utility model]

[0005] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a sand spraying and floating sand all-in-one machine for preparing sand shells, and the technical solution adopted is:

[0006] A sand shower and sand floating integrated machine for preparing sand shells, comprising

[0007] Hood;

[0008] A sand hanging bin is arranged at the bottom of the machine cover, and the sand hanging bin has a bin space for placing sand materials and wax models;

[0009] The gas pumping system is connected with the space inside the sand hanging bin and can input high-pressure gas into the bin space to provide floating sand kinetic energy for the sand body;

[0010] The sand falling system includes a sand falling bin and an isolation device, wherein the isolation device can close the connection between the sand hanging bin and the sand falling bin, or open the sand hanging bin and the sand falling bin to allow the sand to fall from the sand hanging bin into the sand falling bin;

[0011] A lifting system is used to lift the sand in the sand drop bin from bottom to top to the upper layer of the machine cover;

[0012] The sand spraying and evenly dropping system is used to evenly scatter the lifted sand from the upper layer of the machine cover into the sand hanging bin.

[0013] According to an embodiment of the utility model, a sand sprinkling and floating machine for preparing sand shells, the sand sprinkling and evenly falling system includes a shock net assembly arranged on the upper layer of the machine cover, the lifting system lifts the sand body to the upper layer of the machine cover and then drops it onto the shock net assembly, and the shock net assembly vibrates the sand body falling thereon evenly and drops it into the sand hanging bin.

[0014] According to an embodiment of the utility model, a sand showering and floating machine for preparing sand shells is provided, wherein the vibration net assembly includes a first vibration net and a second vibration net which are arranged upper and lower, and vibration motors are arranged on the sides of the first vibration net and the second vibration net.

[0015] According to an embodiment of the utility model, a sand sprinkling and floating machine for preparing sand shells, the sand sprinkling and evenly falling system also includes a rotating blade arranged between a first vibrating net and a second vibrating net, the rotating blade has a rotating shaft in the middle thereof, the upper end of the rotating shaft passes through the first vibrating net and the top of the machine cover and is exposed to the outside of the machine cover, and a rotating motor connected to the end of the rotating shaft is provided on the top of the machine cover.

[0016] According to an embodiment of the utility model, a sand sprinkling and floating sand integrated machine for preparing sand shells is provided, wherein the sand hanging bin is provided with a bin bottom plate at its bottom, and a row of multiple floating sand racks is provided on the bin bottom plate, and all the floating sand racks are arranged in parallel in sequence along the length direction of the sand hanging bin; and an air outlet is provided on the top of the floating sand rack.

[0017] According to an embodiment of the utility model, a sand sprinkling and floating sand integrated machine for preparing sand shells, the gas pumping system includes an air pumping source and an air pumping pipe, one end of the air pumping pipe is connected to the air pumping source, and the other end is connected to the sand hanging bin. After entering the sand hanging bin, the high-pressure air flows to the bottom of the floating sand frame, and flows upward from between two adjacent floating sand frames and the air outlet of the floating sand frame.

[0018] According to an embodiment of the utility model, a sand sprinkling and floating machine for preparing sand shells, the isolation equipment includes a plurality of sand leakage holes arranged on the bottom plate of the bin, and a plurality of isolation plates arranged below the bottom plate of the bin. The isolation plates are overlapped and arranged below the sand leakage holes under normal conditions to block the sand leakage holes. An open cylinder is connected to the isolation plates, and the open cylinder can pull the isolation plates to move below the bottom plate of the bin to leave the sand leakage holes for open isolation.

[0019] According to an embodiment of the utility model, a sand sprinkling and floating machine for preparing sand shells, the lifting system includes a front-end conveying device and a rear-end lifting device; the front-end conveying device includes a conveying screw arranged in a sand falling bin, and the conveying screw conveys the sand body in the sand falling bin to the rear-end lifting device; the rear-end lifting device is a hoist.

[0020] Compared with the prior art, the beneficial effects of the utility model are:

[0021] The utility model forms a floating sand mode in the sand hanging bin through the cooperation of the sand hanging bin and the gas pumping system, and the wax mold can perform floating sand hanging operations in the sand hanging bin; or a circulating sand pouring mode can be formed through the sand hanging bin, the sand falling system, the lifting system and the sand pouring and evenly falling system, and the wax mold can perform sand pouring and hanging operations in the sand hanging bin. The utility model can realize both floating sand and pouring sand modes, and the floating sand hanging is uniform in the floating sand mode, and the sand pouring is uniform in the pouring sand mode, thereby ensuring the quality of sand hanging. The combination of the two functions is more universal for hanging sand on wax molds of various shapes, and the sand hanging modes can be switched automatically according to different types of wax molds.

Brief Description of the Drawings

[0022] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0023] Figure 1 A three-dimensional diagram of one embodiment of the present invention Figure 1 ;

[0024] Figure 2 A three-dimensional diagram of one embodiment of the present invention Figure 2 ;

[0025] Figure 3 A cross-sectional view of one embodiment of the present invention Figure 1 (partial);

[0026] Figure 4 A cross-sectional view of one embodiment of the present invention Figure 2 (partial);

[0027] Figure 5 A cross-sectional view of one embodiment of the present invention Figure 3 (partial);

[0028] Figure 6 A cross-sectional view of one embodiment of the present invention Figure 4 (partial);

[0029] Figure 7 A cross-sectional view of one embodiment of the present invention Figure 5 (partial);

[0030] Figure 8 A cross-sectional view of one embodiment of the present invention Figure 6 (partial);

[0031] Fig. 9 This is a three-dimensional schematic diagram of a sand hanging bin and a doffing system in one embodiment of the utility model;

[0032] Fig.10 for Figure 5 Enlarged view of part A in the middle;

[0033] Fig.11 for Figure 3 Enlarged view of middle part B;

[0034] Fig.12 for Figure 8 Enlarged view of part C in the middle.

[0035] Description of main component symbols:

[0036] 10. Machine cover; 20. Sand hanging bin; 21. Bin bottom plate; 22. Floating sand rack; 23. Air outlet; 24. Sand leakage hole; 25. Isolation plate; 26. Open cylinder; 30. Air pump inlet source; 31. Air pump inlet pipe; 40. Sand falling bin; 50. Conveying screw; 60. Elevator; 70. First vibration net; 80. Second vibration net; 90. Vibration motor; 100. Rotating blades; 101. Rotating shaft; 102. Rotating motor. [Specific implementation method]

[0037] The embodiments of the present invention are described in detail below. The embodiments are shown in the accompanying drawings, wherein the same or similar numbers throughout represent the same or similar elements or elements with the same or similar functions.

[0038] The orientation shown in the drawings cannot be understood as limiting the specific protection scope of the present utility model, and is only provided for reference and understanding of the preferred embodiments. The product components shown in the drawings may be changed in position, increased in number, or simplified in structure.

[0039] The "connection" described in the specification and the mutual "connection" relationship of the components shown in the drawings can be understood as a fixed connection or a detachable connection or an integral connection; it can be a direct connection or a connection through an intermediate medium. Ordinary technicians in this field can understand the connection relationship according to the specific circumstances and can derive different implementation methods in an appropriate manner such as screwing, riveting, welding, clamping or embedding.

[0040] With respect to the directional words such as up, down, left, right, top, bottom, etc. described in the specification and the directions shown in the drawings, the components may be in direct contact or in contact through other features between them; for example, "above" may mean directly above or obliquely above, or it simply means higher than other objects; other directions may be understood by analogy.

[0041] The materials for making parts with solid shapes shown in the specification and the drawings may be metal materials, non-metal materials or other synthetic materials; the mechanical processing techniques used for parts with solid shapes may be stamping, forging, casting, wire cutting, laser cutting, casting, injection molding, CNC milling, 3D printing, machining, etc.; ordinary technicians in this field can adaptively select or combine them according to different processing conditions, costs, and precisions, but are not limited to the above-mentioned materials and manufacturing processes.

[0042] The utility model is a sand sprinkling and floating sand integrated machine for preparing sand shells. Figures 1 to 12 As shown, including

[0043] Hood 10;

[0044] A sand hanging bin 20 is arranged at the bottom of the hood 10, and the sand hanging bin 20 has a bin space for placing sand materials and wax models;

[0045] The gas pumping system is connected to the space inside the sand hanging bin 20 and can input high-pressure gas into the bin space to provide floating sand kinetic energy for the sand body;

[0046] The sand falling system includes a sand falling bin 40 and an isolation device, wherein the isolation device can close the connection between the sand hanging bin 20 and the sand falling bin 40, or open the sand hanging bin 20 and the sand falling bin 40 to allow the sand to fall from the sand hanging bin 20 into the sand falling bin 40;

[0047] A lifting system, which is used to lift the sand in the sand drop bin 40 from bottom to top to the upper layer of the hood 10;

[0048] The sand spraying and evenly dropping system is used to evenly drop the lifted sand from the upper layer of the machine cover 10 into the sand hanging bin 20.

[0049] The sand spraying and floating sand integrated machine provided by the utility model can be used for sand floating and sand spraying operations, provided that the sand body is placed in the sand hanging bin 20 in advance;

[0050] Floating sand operation: put the wax mold into the sand hanging bin 20, start the gas pumping system, and the gas pumping system pumps high-pressure gas into the bin space of the sand hanging bin 20. Under the action of high-pressure air, the sand body floats and surges in the sand hanging bin 20, so that the sand body sticks to the surface of the wax mold. After repeated slurry and sand sticking actions, a sand mold of a certain thickness is formed on its surface. The wax mold is then heated to melt and flow out, and a sand mold shell that can be cast with molten metal is formed.

[0051] Sand pouring operation: put the wax mold into the sand hanging bin 20, release the isolation equipment, let the sand in the sand hanging bin 20 fall into the yarn dropping bin, then lift the sand from the yarn dropping bin to the upper layer of the hood 10 through the lifting system, then, under the action of the sand pouring and evenly falling system, sprinkle the sand on the upper layer of the hood 10 evenly, so that the sand sticks to the surface of the wax mold, and the fallen sand enters the sand dropping bin 40 again, and is lifted to the upper layer of the hood 10 by the lifting system again, and so on, forming a cyclic sand pouring operation. After repeated slurry dipping and sand pouring, a sand mold of a certain thickness is formed on the surface of the wax mold, and then the wax mold is heated to melt and flow out, so as to form a sand mold shell that can be cast with molten metal.

[0052] The utility model forms a floating sand mode in the sand hanging bin 20 through the cooperation of the sand hanging bin 20 and the gas pumping system, and the wax mold can perform floating sand hanging operations in the sand hanging bin 20; or a circulating sand showering mode can be formed through the sand hanging bin 20, the sand falling system, the lifting system and the sand showering and evenly falling system, and the wax mold can perform sand showering and hanging operations in the sand hanging bin 20. The utility model can realize both floating sand and showering sand modes, and the floating sand hanging is uniform in the floating sand mode, and the sand showering is uniform in the showering sand mode, thereby ensuring the quality of sand hanging. The combination of the two functions is more universal for hanging sand on wax molds of various shapes, and the sand hanging mode can be switched automatically according to different types of wax molds.

[0053] In some embodiments of the present utility model application, Figure 1 , 2 As shown in , 3, 4, 5, 6, and 10, the sand showering and uniformly falling system includes a shock net assembly arranged on the upper layer of the engine cover 10. The lifting system lifts the sand body to the upper layer of the engine cover 10 and then drops it onto the shock net assembly. The shock net assembly vibrates the sand body falling thereon evenly and drops it into the sand hanging bin 20. In the embodiment, the falling sand body is shaken and dispersed by the vibration of the shock net assembly, so that it falls evenly through the mesh of the shock net assembly.

[0054] Specifically, in this embodiment, the vibration net assembly includes a first vibration net 70 and a second vibration net 80 which are arranged upper and lower. Vibration motors 90 are provided on the sides of the first vibration net 70 and the second vibration net 80. The first vibration net 70 and the second vibration net 80 vibrate under the action of the vibration motor 90.

[0055] In order to make the sand body fall more evenly, in this embodiment, the sand spraying and evenly falling system also includes a rotating blade 100 arranged between the first vibration net 70 and the second vibration net 80, and the rotating blade 100 is provided with a rotating shaft 101 in the middle thereof, and the upper end of the rotating shaft 101 passes through the first vibration net 70 and the top of the hood 10 and is exposed outside the hood 10, and a rotating motor 102 connected to the end of the rotating shaft 101 is provided on the top of the hood 10, and the rotating motor 102 drives the rotating shaft 101 to rotate, and the rotating shaft 101 drives the rotating blade 100 to rotate. When the sand body falls through the vibration of the first vibration net 70, it is broken up by the rotating blade 100, and then falls onto the second vibration net 80, and falls again after being vibrated by the second vibration net 80. After the sand body is processed by the first vibration net 70, the rotating blade 100, and the second vibration net 80, its falling speed is greatly reduced, its falling is more dispersed and uniform, and the sand spraying effect is better.

[0056] In some embodiments of the present utility model application, Figure 3 , 4 As shown in Figures 9 and 11, the sand hanging bin 20 is provided with a bin bottom plate 21 at its bottom, and a row of multiple floating sand racks 22 are provided on the bin bottom plate 21, and all floating sand racks 22 are arranged in parallel in sequence along the length direction of the sand hanging bin 20; and an air outlet 23 is provided on the top of the floating sand rack 22. The gas pumping system includes an air pumping source 30 and an air pumping pipe 31, one end of the air pumping pipe 31 is connected to the air pumping source 30, and the other end is connected to the sand hanging bin 20. After entering the sand hanging bin 20, the high-pressure air flows to the bottom of the floating sand rack 22, and flows upward from between two adjacent floating sand racks 22 and the air outlet 23 of the floating sand rack 22.

[0057] In some embodiments of the present utility model application, Figure 3 , 7 As shown in Figures 8, 11 and 12, the isolation device includes a plurality of sand leakage holes 24 arranged on the bin bottom plate 21, and a plurality of isolation plates 25 arranged below the bin bottom plate 21. The isolation plates 25 are overlapped and arranged below the sand leakage holes 24 under normal conditions to block the sand leakage holes 24. An open cylinder 26 is connected to the isolation plate 25, and the open cylinder 26 can pull the isolation plate 25 to move below the bin bottom plate 21 to leave the sand leakage holes 24 for open isolation.

[0058] In some embodiments of the present utility model application, the lifting system includes a front-end conveying device and a rear-end lifting device; the front-end conveying device includes a conveying screw 50 arranged in the sand falling bin 40, and the conveying screw 50 conveys the sand body in the sand falling bin 40 to the rear-end lifting device; the rear-end lifting device is a hoist 60.

[0059] Although the utility model is described in detail with reference to the above embodiments, it is obvious to those skilled in the art through this disclosure that various changes or modifications can be made to the utility model without departing from the principle and spirit of the utility model defined by the claims. Therefore, the detailed description of the embodiments of the present disclosure is only used to explain, not to limit the utility model, but the scope of protection is limited by the content of the claims.

Claims

1. A sand spraying and floating machine for preparing sand shells, characterized in that: Included Hood (10); A sand hanging bin (20) is arranged at the bottom of the machine cover (10), and the sand hanging bin (20) has a bin space for placing sand materials and wax models; A gas pumping system is connected to the space inside the sand hanging bin (20) and can input high-pressure gas into the bin space to provide floating sand kinetic energy for the sand body; A sand falling system comprises a sand falling bin (40) and an isolation device, wherein the isolation device can close the connection between the sand hanging bin (20) and the sand falling bin (40), or open the sand hanging bin (20) and the sand falling bin (40) to allow sand to fall from the sand hanging bin (20) into the sand falling bin (40); A lifting system, which is used to lift the sand in the sand drop bin (40) from bottom to top to the upper layer of the machine cover (10); The sand spraying and evenly dropping system is used to evenly drop the lifted sand from the upper layer of the machine cover (10) into the sand hanging bin (20); the sand spraying and evenly dropping system comprises a vibration net assembly arranged on the upper layer of the machine cover (10); the lifting system lifts the sand to the upper layer of the machine cover (10) and then drops it onto the vibration net assembly; the vibration net assembly vibrates the sand falling thereon evenly and drops it into the sand hanging bin (20).

2. The sand spraying and floating machine for preparing sand shell according to claim 1, characterized in that: The vibration net assembly comprises a first vibration net (70) and a second vibration net (80) which are arranged upper and lower, and vibration motors (90) are arranged on the sides of the first vibration net (70) and the second vibration net (80).

3. The sand spraying and floating machine for preparing sand shell according to claim 2, characterized in that: The sand spraying and evenly falling system further comprises a rotating blade (100) arranged between a first vibration net (70) and a second vibration net (80), wherein the rotating blade (100) is provided with a rotating shaft (101) in the middle thereof, and the upper end of the rotating shaft (101) passes through the first vibration net (70) and the top of the hood (10) and is exposed outside the hood (10), and a rotating motor (102) connected to the end of the rotating shaft (101) is provided on the top of the hood (10).

4. The sand spraying and floating machine for preparing sand shell according to claim 1, characterized in that: The sand hanging bin (20) is provided with a bin bottom plate (21) at its bottom, and a row of a plurality of floating sand racks (22) is provided on the bin bottom plate (21), and all the floating sand racks (22) are sequentially arranged in parallel along the length direction of the sand hanging bin (20); and an air outlet (23) is provided at the top of the floating sand rack (22).

5. The sand spraying and floating machine for preparing sand shell according to claim 4, characterized in that: The gas pumping system comprises an air pumping source (30) and an air pumping pipe (31). One end of the air pumping pipe (31) is connected to the air pumping source (30), and the other end is connected to the sand hanging bin (20). After entering the sand hanging bin (20), the high-pressure air flows to the bottom of the floating sand rack (22) and flows upward from between two adjacent floating sand racks (22) and the air outlet (23) of the floating sand rack (22).

6. The sand spraying and floating machine for preparing sand shell according to claim 4, characterized in that: The isolation device comprises a plurality of sand leakage holes (24) arranged on a bin bottom plate (21), and a plurality of isolation plates (25) arranged below the bin bottom plate (21). The isolation plates (25) are overlapped and arranged below the sand leakage holes (24) under normal conditions to block the sand leakage holes (24). An open cylinder is connected to the isolation plates (25). The open cylinder (26) can pull the isolation plates (25) to move below the bin bottom plate (21) to leave the sand leakage holes (24) for open isolation.

7. The sand spraying and floating machine for preparing sand shell according to claim 1, characterized in that: The lifting system comprises a front-end conveying device and a rear-end lifting device; the front-end conveying device comprises a conveying screw (50) arranged in a sand falling bin (40), and the conveying screw (50) conveys the sand body in the sand falling bin (40) to the rear-end lifting device; the rear-end lifting device is a hoist (60).

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