Sand box for shell mold back shot casting

Abstract

The sand box comprises a box body and a forking structure, the box body comprises a bottom wall and a side wall connected with the bottom wall, the forking structure is arranged below the box body and connected with the bottom wall, the projection of the bottom wall on the horizontal plane covers the projection of the forking structure on the horizontal plane, and the side wall is connected with the side wall. The forking structure is provided with two transverse forking channels and two longitudinal forking channels, and the two transverse forking channels and the two longitudinal forking channels are perpendicularly connected in a crossed mode to form a structure shaped like a Chinese character'jing '. According to the sand box, the forklift loader can be used for lifting and placing, manpower is liberated, the forklift loader and the forklift loading structure are oppositely inserted, the forklift loader is prevented from making contact with the box body, and the risk that the box body is deformed and even damaged is reduced; and the forklift loader can be inserted into the forking structure from the front, back, left and right directions of the sand box, so that the forking convenience and rapidness are greatly improved.

Description

Technical Field

[0001] This application relates to the field of casting sand box technology, specifically to a sand box for shell-type back shot casting. Background Technology

[0002] Shell-type shot casting is a new type of casting process that has rapidly developed and been widely used in recent years. Its basic principle is to place the casting cavity, which is composed of a shell and a sand core, into a casting sand box. The filling medium is used to fix and conduct heat, ensuring the operation of the casting process and the quality of the casting. It also takes into account the structural strength of the shell and the sand core. At present, in actual production, resin sand, which is a mixture of resin binder and zircon sand, is generally used as the raw material for core preparation. Since the resin binder generates a large amount of high-temperature gas during the casting process, it needs to be discharged in time. Therefore, iron shot must be used as the filling medium in the sand box. Taking advantage of the good thermal conductivity of metal and the large gap between the spheres, the sand box is provided with sufficient heat conduction and gas permeability. However, since this process uses iron shot as the filling medium, in order to improve the quality of the casting, the compaction of the iron shot filling must be ensured. Therefore, the sand box is usually placed on a vibrating table with a vibration function to compact the filled iron shot. After casting is completed, the iron shot and the shell are poured out of the sand box together. However, the sand box, as well as the shell mold and castings inside it, are quite heavy. Current methods, which rely on manual lifting of the sand box onto the vibratory compaction table and manual turning of the sand box to empty the shell mold and iron shot, are labor-intensive, risky, time-consuming, and prone to safety accidents. Therefore, there is an urgent need to improve the structure of the sand box to facilitate its lifting and turning by mechanized equipment. Utility Model Content

[0003] This application provides a sand box for shell-type shot casting, which can be lifted or turned by mechanized equipment, thereby solving the technical problems of large workload, high risk, time and labor consumption, and easy safety accidents that exist in the existing manual lifting or turning.

[0004] The technical solution adopted in this application is as follows:

[0005] A sand box for shell-type back shot casting includes a box body and a forklift structure. The box body includes a bottom wall and side walls connected to the bottom wall. The forklift structure is located below the box body and connected to the bottom wall. The projection of the bottom wall on a horizontal plane covers the projection of the forklift structure on a horizontal plane. The forklift structure has two transverse forklift channels and two longitudinal forklift channels. The two transverse forklift channels and the two longitudinal forklift channels are perpendicularly connected to form a grid structure.

[0006] The sand box for shell-type back shot casting provided in this application also includes the following additional technical features:

[0007] The bottom wall is configured as a circular structure, and the two ends of the transverse forklift passage and the two ends of the longitudinal forklift passage extend to the edge of the bottom wall and are flush with the edge of the bottom wall.

[0008] The top and bottom surfaces of the forklift structure are both configured as planar structures, and the top surface of the forklift structure is welded to the bottom wall.

[0009] Multiple lower reinforcing ribs are connected between the outer surface of the sidewall and the bottom wall.

[0010] The sand box also includes a lifting device, and the top of the side wall is provided with an outwardly extending flange. The lifting device is connected to the flange and is provided with a lifting hole.

[0011] The lifting component is configured as a U-shaped structure, and the flange is provided with a plurality of positioning holes spaced apart. The two ends of the lifting component are respectively inserted into the positioning holes from top to bottom and welded to the flange.

[0012] The sidewall is configured as a ring structure, and multiple lifting components are evenly distributed along the circumference of the flange.

[0013] Multiple upper reinforcing ribs connect the flange to the outer surface of the sidewall.

[0014] The sidewall is provided with an outwardly protruding connecting protrusion that extends vertically. The upper end of the connecting protrusion is connected to the flange, and the lower end of the connecting protrusion is connected to the bottom wall.

[0015] The multiple connecting protrusions are evenly distributed circumferentially along the sidewall, and each connecting protrusion has a cavity extending through its upper and lower ends.

[0016] Due to the adoption of the above technical solution, the technical effects achieved by this application include at least the following:

[0017] 1. The sand box for shell-type shot casting provided in this application has a forklift structure connected to the bottom of the box body. The transverse and longitudinal forklift channels of the forklift structure can be adapted to the forks of a forklift truck, so that the sand box can be lifted and removed from a vibrating table or self-vibrating table by a forklift truck, thereby freeing up manpower. The forklift truck and the forklift structure are inserted into each other, avoiding direct contact between the forklift truck and the box body, effectively reducing the risk of deformation or even damage to the box body. The projection of the bottom wall of the box body on the horizontal plane covers the projection of the forklift structure on the horizontal plane, so that the outer edge of the forklift structure does not protrude from the edge of the bottom wall of the box body. This ensures that after the forklift truck's forks are inserted into the forklift structure, the center of gravity of the sand box is as close as possible to the rear end of the forks, improving forklift stability and reducing the risk of the sand box falling off the forks. In addition, the two transverse forklift channels and the two longitudinal forklift channels are perpendicularly connected to form a grid structure. Forks can be inserted at both ends of the two transverse forklift channels and at both ends of the two longitudinal forklift channels. Therefore, the forklift can be inserted into the forklift structure from the front, back, left, and right sides of the sand box, which greatly improves the convenience and speed of forklift loading.

[0018] 2. By aligning the two ends of the transverse and longitudinal forklift channels with the edges of the bottom wall, it ensures that the transverse and longitudinal forklift channels have sufficient length for the forklift truck's forks to insert. Furthermore, it ensures that the openings at both ends of the transverse and longitudinal forklift channels are exposed on the sides of the sandbox, allowing the forklift truck driver to easily observe from the side of the sandbox and accurately and quickly align and insert the forks into the transverse or longitudinal forklift channels. This improves work efficiency and reduces the risk of forklift structure deformation due to incorrect fork insertion.

[0019] 3. The sand box also includes a lifting device. The top of the side wall has an outwardly extending flange. The lifting device connects to the flange and has lifting holes. These holes are compatible with crane hooks, allowing the sand box to be rotated by a crane. This frees up manpower, reduces workload, saves working time and labor costs, and lowers the risk of accidents. Furthermore, in the foundry processing area, if it is inconvenient to transport the sand box using a forklift, a crane and the lifting device can be used to lift the sand box onto a vibratory compaction table or a self-vibratory compaction table. Attached Figure Description

[0020] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0021] Figure 1 Axonometric view of the sand box for shell-type back shot casting provided in the embodiments of this application. Figure 1 ;

[0022] Figure 2Axonometric view of the sand box for shell-type back shot casting provided in the embodiments of this application. Figure 2 ;

[0023] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0024] Figure 4 A bottom view of a sand box for shell-type back shot casting provided in an embodiment of this application;

[0025] Figure 5 This is a cross-sectional view of a sand box for shell-type back shot casting provided in an embodiment of this application.

[0026] List of components and reference numerals:

[0027] 1. Box body, 11. Bottom wall, 12. Side wall, 13. Lower reinforcing rib, 14. Flanged edge, 15. Positioning hole, 16. Upper reinforcing rib, 17. Connecting protrusion, 18. Cavity;

[0028] 2. Forklift structure, 21. Lateral forklift aisle, 22. Longitudinal forklift aisle;

[0029] 3 lifting components, 31 lifting holes. Detailed Implementation

[0030] To more clearly illustrate the overall concept of this application, a detailed explanation is provided below with reference to the accompanying drawings.

[0031] Many specific details are set forth in the following description in order to provide a full understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below.

[0032] Furthermore, it should be understood in the description of this application that the terms "upper," "lower," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," "lateral," and "longitudinal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0033] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0034] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0035] In the embodiments of this application, a sand box for shell-type back shot casting is provided. For ease of explanation and understanding, the following content provided in this application is based on the illustrated product structure. Of course, those skilled in the art will understand that the above structure is only a specific example and illustrative illustration, and does not constitute a specific limitation on the technical solution provided in this application.

[0036] like Figures 1 to 5 As shown, this application provides a sand box for shell-type back shot casting. The sand box includes a box body 1 and a forklift structure 2. The box body 1 includes a bottom wall 11 and a side wall 12 connecting the bottom wall 11. The forklift structure 2 is located below the box body 1 and connected to the bottom wall 11. The projection of the bottom wall 11 on the horizontal plane covers the projection of the forklift structure 2 on the horizontal plane. The forklift structure 2 is provided with two transverse forklift channels 21 and two longitudinal forklift channels 22. The two transverse forklift channels 21 and the two longitudinal forklift channels 22 are vertically intersected and connected to form a grid-like structure.

[0037] The sand box for shell-type shot casting provided in this application has a forklift structure 2 connected to the bottom of the box body 1. The transverse forklift channel 21 and longitudinal forklift channel 22 of the forklift structure 2 can be adapted to the forks of a forklift truck, so that the sand box can be lifted and placed on a vibrating table or removed from a self-vibrating table by a forklift truck, thereby freeing up manpower. The forklift truck and the forklift structure 2 are inserted into each other, avoiding direct contact between the forklift truck and the box body 1, effectively reducing the risk of deformation or even damage to the box body 1. The projection of the bottom wall 11 of the box body 1 on the horizontal plane covers the projection of the forklift structure 2 on the horizontal plane, so that the outer edge of the forklift structure 2 does not protrude from the edge of the bottom wall 11 of the box body 1. This ensures that after the forklift truck's forks are inserted into the forklift structure 2, the center of gravity of the sand box is as close as possible to the rear end of the forks, improving the stability of forklift operation and reducing the risk of the sand box falling off the forks. In addition, the two transverse forklift channels 21 and the two longitudinal forklift channels 22 are vertically connected to form a grid structure. Both ends of the two transverse forklift channels 21 can be used for inserting forks, and both ends of the two longitudinal forklift channels 22 can also be used for inserting forks. Therefore, the forklift can be inserted into the forklift structure 2 from the front, back, left and right sides of the sand box, which greatly improves the convenience and speed of forklift loading.

[0038] In a preferred embodiment, to ensure the strength of the forklift structure 2, it can be made of metal, such as cast iron, cast steel or alloy.

[0039] As a preferred embodiment of this application, such as Figure 1 , Figure 2 and Figure 4 As shown, the bottom wall 11 is configured as a circular structure, and the two ends of the transverse forklift channel 21 and the two ends of the longitudinal forklift channel 22 extend to the edge of the bottom wall 11 and are flush with the edge of the bottom wall 11. Those skilled in the art will understand that the scheme of ensuring that the outer edge of the fork structure 2 does not protrude beyond the edge of the bottom wall 11 of the box 1, by making the two ends of the transverse fork passage 21 and the two ends of the longitudinal fork passage 22 flush with the edge of the bottom wall 11, ensures that the transverse fork passage 21 and the longitudinal fork passage 22 have sufficient length for the forklift truck's forks to insert. On the other hand, it also ensures that the two ends of the transverse fork passage 21 and the two ends of the longitudinal fork passage 22 are exposed on the side of the sand box, which makes it easier for the forklift truck driver to observe from the side of the sand box, so as to accurately and quickly align and insert the forks with the transverse fork passage 21 or the longitudinal fork passage 22, thereby improving work efficiency and reducing the risk of deformation of the fork structure 2 due to incorrect insertion of the forks.

[0040] Furthermore, both the top and bottom surfaces of the fork-mounted structure 2 are configured as planar structures, and the top surface of the fork-mounted structure 2 is welded to the bottom wall 11. Those skilled in the art will understand that the planar top surface of the fork-mounted structure 2 facilitates a planar connection between the bottom wall 11 of the box 1 and the fork-mounted structure 2, resulting in a large contact area and high welding stability. The planar bottom surface of the fork-mounted structure 2 allows the sand box to be placed flat on the ground or a vibrating table, preventing overall tilting and thus avoiding interference with the casting process.

[0041] Furthermore, such as Figure 1 and Figure 2 As shown, multiple lower reinforcing ribs 13 connect the outer surface of the side wall 12 and the bottom wall 11. These lower reinforcing ribs 13 strengthen the connection between the side wall 12 and the bottom wall 11, effectively improving their structural strength and resistance to deformation, thereby reducing the risk of deformation of the sand box during forklift handling. Preferably, the lower reinforcing ribs 13 can be welded to the side wall 12 and the bottom wall 11 to improve connection reliability.

[0042] As a preferred embodiment of this application, such as Figures 1 to 3 As shown, the sand box also includes a lifting component 3. The top of the side wall 12 is provided with an outwardly extending flange 14. The lifting component 3 is connected to the flange 14 and is provided with a lifting hole 31. Those skilled in the art will understand that the lifting hole 31 can be adapted to a crane hook. When it is necessary to pour the iron shot and shell mold out of the sand box together, the crane hook can be used to hook one of the lifting holes 31 and then lift it upwards, raising one end of the sand box to achieve a flip. Using a crane to flip the sand box frees up manpower, reduces workload, saves working time and labor costs, and reduces the risk of safety accidents. Furthermore, in the casting processing site, if it is inconvenient to transport the sand box by forklift, the sand box can also be lifted onto a vibratory compaction platform or a self-vibratory compaction platform using a crane and the lifting component 3.

[0043] Furthermore, regarding the structure of the lifting component 3, in the preferred embodiment, as... Figure 1 and Figure 3 As shown, the lifting component 3 is configured with a U-shaped structure, and the flange 14 has a plurality of positioning holes 15 spaced apart. Both ends of the lifting component 3 are inserted into the positioning holes 15 from top to bottom and welded to the flange 14. Those skilled in the art will understand that the U-shaped configuration of the lifting component 3 is simple in structure and easy to process. For example, steel bars cut to a suitable length can be bent into a U-shaped structure using a bending machine. The U-shaped structure is then inverted, with both ends inserted into the positioning holes 15 from top to bottom, and the lifting component 3 is welded to the edges of the positioning holes 15, ensuring reliable connection between the lifting component 3 and the flange 14.

[0044] In a preferred embodiment, such as Figure 1 and Figure 2 As shown, the sidewall 12 is configured as a ring structure, and the plurality of lifting components 3 are evenly distributed along the circumference of the flange 14. Figure 1 The illustration shows an embodiment in which three lifting components 3 are evenly distributed along the circumference of the flange 14. Of course, other suitable numbers of lifting components 3 can also be used, and this is not limited here. Those skilled in the art will understand that with this arrangement, on the one hand, compared to having only one lifting component 3 on the flange 14, multiple lifting components 3 can work with the crane in turn, thereby reducing the number of times a single lifting component 3 works and improving its service life. On the other hand, the even distribution of multiple lifting components 3 along the circumference of the flange 14 makes it easier for the crane to select the appropriate lifting component 3 for lifting and flipping according to the position where the iron shot and shell are poured out, thereby reducing the limitation on the flipping direction caused by a single lifting component 3.

[0045] Furthermore, such as Figure 1 As shown, multiple upper reinforcing ribs 16 connect the flange 14 to the outer surface of the sidewall 12. These upper reinforcing ribs 16 strengthen the connection between the sidewall 12 and the flange 14, effectively improving structural strength and resistance to deformation, thereby reducing the risk of deformation or even damage to the sand box during crane lifting. Preferably, the upper reinforcing ribs 16 can be welded to the sidewall 12 and the flange 14 to improve connection reliability.

[0046] In a preferred embodiment, such as Figure 1 and Figure 2 As shown, the side wall 12 is provided with an outwardly protruding connecting protrusion 17, which extends vertically. The upper end of the connecting protrusion 17 connects to the flange 14, and the lower end of the connecting protrusion 17 connects to the bottom wall 11. Those skilled in the art will understand that by connecting the side wall 12, flange 14, and bottom wall 11 of the housing 1 together through the connecting protrusion 17, the strength of the housing 1 is further enhanced, effectively improving its resistance to impact and deformation, and reducing the risk of damage during forklift handling and hoisting. Preferably, the connecting protrusion 17 can be welded to the side wall 12, bottom wall 11, and flange 14 to improve connection reliability.

[0047] Furthermore, such as Figure 1 and Figure 5 As shown, multiple connecting protrusions 17 are evenly distributed circumferentially along the sidewall 12, and each connecting protrusion 17 has a cavity 18 extending through both the upper and lower ends. The multiple connecting protrusions 17 together enhance the structural strength of the box body 1 by connecting the sidewall 12, bottom wall 11, and flange 14. The cavity 18 inside the connecting protrusions 17 helps reduce the weight of the sand box and lowers the burden of forklift handling and hoisting.

[0048] For any parts not mentioned in this application, existing technologies may be used or referenced.

[0049] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0050] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A sand box for shell-type back shot casting, characterized in that, The sand box includes a box body and a forklift structure. The box body includes a bottom wall and a side wall connected to the bottom wall. The forklift structure is located below the box body and connected to the bottom wall. The projection of the bottom wall on the horizontal plane covers the projection of the forklift structure on the horizontal plane. The forklift structure has two transverse forklift channels and two longitudinal forklift channels. The two transverse forklift channels and the two longitudinal forklift channels are perpendicularly connected to form a grid structure.

2. The sand box for shell-type back shot casting according to claim 1, characterized in that, The bottom wall is configured as a circular structure, and the two ends of the transverse forklift passage and the two ends of the longitudinal forklift passage extend to the edge of the bottom wall and are flush with the edge of the bottom wall.

3. The sand box for shell-type back shot casting according to claim 2, characterized in that, The top and bottom surfaces of the forklift structure are both configured as planar structures, and the top surface of the forklift structure is welded to the bottom wall.

4. The sand box for shell-type back shot casting according to claim 3, characterized in that, Multiple lower reinforcing ribs are connected between the outer surface of the sidewall and the bottom wall.

5. The sand box for shell-type back shot casting according to claim 1, characterized in that, The sand box also includes a lifting device, and the top of the side wall is provided with an outwardly extending flange. The lifting device is connected to the flange and is provided with a lifting hole.

6. The sand box for shell-type back shot casting according to claim 5, characterized in that, The lifting component is configured as a U-shaped structure, and the flange is provided with a plurality of positioning holes spaced apart. The two ends of the lifting component are respectively inserted into the positioning holes from top to bottom and welded to the flange.

7. The sand box for shell-type back shot casting according to claim 5, characterized in that, The sidewall is configured as a ring structure, and multiple lifting components are evenly distributed along the circumference of the flange.

8. The sand box for shell-type back shot casting according to claim 7, characterized in that, Multiple upper reinforcing ribs connect the flange to the outer surface of the sidewall.

9. The sand box for shell-type back shot casting according to claim 7, characterized in that, The sidewall is provided with an outwardly protruding connecting protrusion that extends vertically. The upper end of the connecting protrusion is connected to the flange, and the lower end of the connecting protrusion is connected to the bottom wall.

10. The sand box for shell-type back shot casting according to claim 9, characterized in that, The multiple connecting protrusions are evenly distributed circumferentially along the sidewall, and each connecting protrusion has a cavity extending through its upper and lower ends.

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