Multifunctional adjustable dry sand box for 3D printing sand mold

Abstract

The utility model discloses a multifunctional adjustable dry sand box for a 3D printing sand mold. The multifunctional adjustable dry sand box comprises a bottom plate, a pair of L-shaped baffles, a cover plate and a limiting assembly. The bottom plate is rectangular, the baffles are spliced into a rectangular fence through screws and installed on the bottom plate, and triangular reinforcing blocks are arranged on the inner sides of the baffles to enhance rigidity. The cover plate is detachably installed on the fence, and the cover plate, the bottom plate and the fence jointly form the dry sand box. The limiting assemblies are arranged in the dry sand box in an array mode and used for limiting the sand mold, and the position precision of the sand mold in the 3D printing process is ensured. And the baffle is provided with the turnup and is detachably connected with the cover plate, the bottom plate and the other baffle through the mounting holes, so that the structural stability is enhanced. A round hole is formed in the middle of the bottom plate so that liquid alloy can be conveniently injected into a sand mold. Supporting strips and lifting handles are arranged on the outer sides of the baffles, and carrying and operation are convenient. Through the detachable structure and the adjustable limiting assembly, the device is suitable for sand molds with different sizes, the part taking process is simplified, the production efficiency is improved, and the maintenance cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of sand box design technology in 3D printed sand casting, specifically to a multifunctional adjustable dry sand box for 3D printed sand molds. Background Technology

[0002] In the casting industry, the application of 3D printed sand mold technology is becoming increasingly widespread. A suitable sand mold is needed during the casting process to ensure casting quality and efficiency.

[0003] In existing technologies, sand boxes typically employ a one-piece structure, using a limiting mechanism to fix the 3D-printed sand mold to the bottom plate of the sand box, preventing mold misalignment during casting. A dry sand embedding box based on a 3D-printed sand mold, mentioned in the published Chinese patent document CN221935312U, includes a bottom plate, a box body, a cover plate, and a mold limiting mechanism. The box body is made of integral metal casting, and the limiting mechanism fixes the sand mold to the bottom plate using clamping blocks and connecting rods, ensuring the dimensional accuracy of the casting. Although existing sand boxes can prevent mold misalignment to some extent, they still have some drawbacks. First, the integral casting box structure limits its adaptability; for sand molds of different shapes and sizes, the limiting mechanism may need to be adjusted or replaced, causing inconvenience. Second, the maintenance and replacement costs of integral casting boxes are high; if a component of the box is damaged, the entire sand box or a larger component may need to be replaced, increasing maintenance difficulty and cost. Furthermore, existing sand boxes typically only allow for vertical removal of parts, which is difficult due to interference from internal fixing devices and the sand mold, thus impacting production efficiency. Therefore, there is an urgent need for a multi-functional, adjustable dry sand box capable of accommodating sand molds of different shapes and sizes, reducing maintenance and replacement costs, simplifying the removal process, and improving production efficiency. Utility Model Content

[0004] Purpose of the utility model: In order to overcome the above shortcomings, the purpose of this utility model is to provide a multifunctional adjustable dry sand box for 3D printing sand molds. Through the detachable baffle structure and adjustable limiting components, it can adapt to sand molds of different shapes and sizes, reduce maintenance and replacement costs, simplify the part removal process, and improve production efficiency.

[0005] Technical Solution: This utility model provides a multifunctional adjustable dry sand box for 3D printing sand molds, comprising a base plate, a pair of L-shaped baffles, a cover plate, and a set of limiting components. The base plate is rectangular, and the pair of baffles are centrally symmetrical and assembled with screws to form a rectangular enclosure. The enclosure is detachably mounted on the base plate. A set of reinforcing blocks, triangular in shape, is provided at the right angles of the inner sides of each baffle. The cover plate is detachably mounted on the enclosure. The base plate, enclosure, and cover plate together form the dry sand box. The limiting components are arrayed inside the dry sand box to limit the sand mold. The base plate and the pair of L-shaped baffles are assembled with screws to form a rectangular enclosure, which is detachably mounted on the base plate. The cover plate is also detachably mounted on the enclosure. This design allows the dry sand box to be easily and quickly assembled and disassembled, adapting to different usage scenarios, such as when frequent sand mold changes, cleaning the inside of the sand box, or adjusting the size of the sand box are required. An array of limiting components is installed inside the dry sand box, its main function being to precisely position and fix the sand mold. A set of triangular reinforcing blocks is located at the right angle on the inner side of the baffle. The triangular structure provides excellent stability, and these reinforcing blocks enhance the rigidity of the baffle. When subjected to the weight of the sand mold, external impacts, and vibrations during the 3D printing process, the baffle remains undeformed, maintaining the overall stability of the dry sand box structure and thus ensuring the smooth progress of the sand mold making process.

[0006] Furthermore, this application discloses a multifunctional adjustable dry sand box for 3D printing sand molds. The upper end of the baffle has a first flange facing outwards, the lower end of the baffle has a second flange facing outwards, and one side of the baffle has a third flange facing outwards. Each of the first, second, and third flanges has mounting holes. The first flange is detachably connected to a cover plate via the mounting holes, the second flange is detachably connected to a base plate via the mounting holes, and a pair of baffles are detachably connected to each other via the third flange. The flange design structurally extends and reinforces the connection points. Compared to directly setting the connection structure on the edge of the baffle body, the flange increases the contact area of ​​the connection. When connecting using connectors (such as screws) through the mounting holes, the tensile and compressive forces borne by the connection can be more evenly distributed, making the connection between components more stable and reducing structural instability caused by loose connections during use. This ensures that the dry sand box maintains a reliable overall structural state throughout the 3D printing process.

[0007] Furthermore, in this application, a multifunctional adjustable dry sand box for 3D printing sand molds is provided, wherein a circular hole is provided in the middle of the bottom plate, and liquid alloy is pressed into the sand mold from bottom to top through the circular hole under pressure.

[0008] Furthermore, this application discloses a multifunctional adjustable dry sand box for 3D printing sand molds. The limiting component includes a pair of guide pillars. The lower ends of the guide pillars are mounted on a base plate and perpendicular to the base plate. The upper ends of the pair of guide pillars are connected to pressure grooves, which are parallel to the base plate and can be adjusted vertically along the guide pillars. The pair of guide pillars are vertically mounted on the base plate, and the pressure grooves connected to their upper ends can be adjusted vertically. By adjusting the height of the pressure grooves, the sand mold can be confined within the space between the pressure grooves and the base plate, preventing displacement, shaking, or tilting of the sand mold during 3D printing due to external forces. This ensures the positional accuracy of the sand mold during the manufacturing process, thereby guaranteeing the quality and dimensional accuracy of the 3D printed sand mold. The adjustable movement of the pressure grooves along the guide pillars in the vertical direction allows the limiting component to adapt to sand molds of different heights. Whether it is a relatively short, small sand mold or a tall, large sand mold, the effective limiting of the sand mold can be achieved by adjusting the position of the pressure grooves, increasing the compatibility and versatility of the dry sand box for sand molds of different sizes.

[0009] Furthermore, in this application, a multifunctional adjustable dry sand box for 3D printing sand molds includes a set of support strips on the outer surface of the baffle. These support strips are vertically positioned between the first and second flanges. The vertical placement of the support strips between the first and second flanges effectively creates "reinforcing ribs" on the outer surface of the baffle. Since the baffle plays a crucial role in containing and bearing loads within the dry sand box, these support strips enhance the overall rigidity of the baffle when subjected to the weight of the sand mold, external impacts, and vibrations during the 3D printing process. This reduces the likelihood of bending or deformation, further stabilizing the baffle's structure and ensuring the overall stability of the dry sand box.

[0010] Furthermore, this application discloses a multifunctional adjustable dry sand box for 3D printing sand molds, wherein a lifting handle is provided on the support bar. The lifting handle provides the dry sand box with convenient lifting and handling capabilities. When the dry sand box needs to be moved, such as transferring it between different workstations within a production workshop or transporting it to other locations, the dry sand box can be easily lifted and smoothly transported by connecting lifting equipment (such as a crane or electric hoist) to the lifting handle, meeting the operational needs for flexible allocation of the dry sand box in different spatial scenarios. The lifting handle is mounted on the support bar, which, due to its structural strength, can stably bear the weight of the dry sand box and external forces such as the tensile force applied by the lifting equipment during the lifting process. Moreover, the position of the lifting handle is relatively fixed and clearly defined, providing a standardized point of leverage for lifting operations, facilitating accurate hooking and force application by the lifting equipment, and ensuring the safe and orderly conduct of the lifting process.

[0011] Furthermore, in this application, a multifunctional adjustable dry sand box for 3D printing sand molds has a set of first handles on the outer edges of the base plate. These first handles, located on the outer edges of the base plate, provide operators with a direct gripping point. In scenarios where lifting equipment is not required, such as moving the dry sand box at close range or fine-tuning its position on a workbench, operators can easily lift and move the dry sand box manually by holding the first handles.

[0012] Furthermore, in this application, a multifunctional adjustable dry sand box for 3D printing sand molds has a set of second handles on the outer edges of the cover plate. When installing or removing the cover plate, the operator can easily pick it up or put it down by holding the second handles, facilitating the assembly and disassembly of the cover plate from the enclosure.

[0013] Furthermore, this application discloses a multifunctional adjustable dry sand box for 3D printing sand molds, wherein a set of exhaust pipes is provided at the upper end of the baffle. As the process progresses, the increase in gas inside the dry sand box may lead to an increase in internal pressure. The exhaust pipes can effectively regulate the pressure inside the box and maintain it in a relatively stable state.

[0014] As can be seen from the above technical solution, this utility model has the following beneficial effects:

[0015] 1. The multifunctional adjustable dry sand box for 3D printing sand molds described in this utility model, through its detachable assembly structure design, enables convenient assembly and disassembly of the base plate, baffle, and cover plate, greatly shortening the production preparation cycle. For example, when frequently changing sand molds, cleaning the sand box, or adjusting dimensions, operators can quickly complete the operation, effectively improving production efficiency. At the same time, the array-set limiting components accurately position the sand mold, ensuring the stability of the sand mold position during 3D printing, improving the quality of the sand mold, and thus improving the quality of castings produced from this sand mold and reducing the scrap rate.

[0016] 2. The multifunctional adjustable dry sand box for 3D printing sand molds described in this utility model, through its two-part opening and closing structure and the fixing method of bolts on both sides, changes the difficulties of traditional sand frame part removal. During part removal, the operator can easily disassemble the L-shaped side plate and remove the pressure groove, avoiding interference from the original fixing device and sand mold, and realizing convenient part removal from the side, no longer limited to the top and bottom removal method. This greatly simplifies the part removal process and effectively improves operational efficiency and production benefits. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a multifunctional adjustable dry sand box structure for 3D printing sand molds according to this utility model.

[0018] Figure 2This is a schematic diagram of the disassembled structure of a multifunctional adjustable dry sand box for 3D printing sand molds according to this utility model.

[0019] Explanation of the reference numerals in the instruction manual: 1-base plate, 2-baffle, 3-cover plate, 4-limiting component, 11-round hole, 12-first handle, 20-reinforcing block, 21-first flange, 22-second flange, 23-third flange, 24-support bar, 25-lifting handle, 26-exhaust pipe, 31-second handle, 41-guide post, 42-pressure groove. Detailed Implementation

[0020] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments.

[0021] Example 1

[0022] like Figure 1 , 2 The multifunctional adjustable dry sand box for 3D printing sand molds shown here has the following structural composition and specific features:

[0023] Base plate 1: Rectangular in shape, with two first handles 12 on each opposite outer edge, totaling four. These first handles 12 facilitate the operator's movement of the dry sand box at close range or fine-tuning its position on the workbench. The operator can easily lift and move the dry sand box manually by holding the first handles 12. A circular hole 11 is provided in the middle of the base plate 1. Under pressure, the liquid alloy can be smoothly pressed into the sand mold from bottom to top through the circular hole 11, realizing the effective connection between the sand mold and the subsequent liquid alloy injection process in the casting stage. In this embodiment, the liquid alloy is an aluminum alloy.

[0024] Baffle 2: A pair of L-shaped baffles 2 are centrally symmetrical and assembled with screws to form a rectangular enclosure, which is detachably mounted on the base plate 1. Each baffle 2 has two triangular reinforcing blocks 20 at its inner right angle, enhancing its rigidity when subjected to the weight of the sand mold, external impacts, and vibrations during 3D printing, ensuring the baffle 2 does not deform and maintaining the overall stability of the dry sand box structure. The upper end of the baffle 2 has a first flange 21 facing outwards, the lower end has a second flange 22 facing outwards, and one side has a third flange 23 facing outwards. Mounting holes are provided on the first flange 21, second flange 22, and third flange 23. The first flange 21 is detachably connected to the cover plate 3 through the mounting holes, the second flange 22 is detachably connected to the base plate 1 through the mounting holes, and the pair of baffles 2 are detachably connected to each other through the third flange 23. This flange design increases the contact area of ​​the connections, making the connections between components more stable and reducing the possibility of loosening. Each baffle 2 has two support bars 24 on its outer side, and a lifting handle 25 is provided on one of the support bars 24 on one side. The support bars 24 are perpendicular to the space between the first flange 21 and the second flange 22, acting as reinforcing ribs and enhancing the overall rigidity of the baffle 2. The lifting handle 25 provides convenient lifting and handling capabilities for the dry sand box. When the dry sand box needs to be moved, such as transferring it between different workstations in the production workshop or transporting it to other sites, the dry sand box can be easily lifted and transported smoothly by connecting the lifting equipment to the lifting handle 25. The position of the lifting handle 25 is relatively fixed and clear, providing a standardized point of leverage for lifting operations, facilitating accurate hooking and force application by the lifting equipment, and ensuring the safe and orderly conduct of the lifting process. In addition, two exhaust pipes 26 are provided at the upper end of the baffle 2, which can effectively regulate the pressure inside the box and maintain it in a relatively stable state, avoiding adverse effects on the dry sand box structure and sand mold caused by pressure increase due to gas accumulation.

[0025] Cover plate 3: It can be detachably installed on the fence, and each of its opposite outer edges is provided with two second handles 31, for a total of four. When installing or removing the cover plate 3, the operator can easily pick up or put down the cover plate 3 by holding the second handles 31, which facilitates the assembly and disassembly of the cover plate 3 and the fence, making the process more convenient and efficient.

[0026] Limiting components 4: There are four components in total, arranged in an array inside the dry sand box. Each limiting component 4 includes a pair of guide posts 41 and a pressure groove 42. The lower end of the guide posts 41 is mounted on the base plate 1 and perpendicular to the base plate 1. The pressure groove 42 is a channel steel, which is parallel to the base plate 1 and can be adjusted and moved vertically along the guide posts 41. By adjusting the height of the pressure groove 42, sand molds of different shapes and sizes can be confined within the space between the pressure groove 42 and the base plate 1, effectively preventing the sand mold from shifting, shaking, or tilting due to external forces during the 3D printing process. This ensures the positional accuracy of the sand mold during the manufacturing process, thereby guaranteeing the quality and dimensional accuracy of the 3D printed sand mold and increasing the compatibility and versatility of the dry sand box for sand molds of different sizes.

[0027] In practical use, firstly, a pair of baffles 2 are assembled with the base plate 1 using screws to form a rectangular enclosure. Then, the sand mold is placed on the base plate 1, and the position of the pressure groove 42 of the limiting component 4 is adjusted according to the height of the sand mold to ensure it tightly presses against the sand mold. Next, the cover plate 3 is placed on top, and the components are securely connected through the flanges and mounting holes. When the dry sand box needs to be moved, the lifting handle 25 can be used with lifting equipment for hoisting, or it can be moved manually for short distances using the first handle 12 and the second handle 31. When liquid alloy needs to be injected during the casting process, the liquid alloy is injected into the sand mold through the round hole 11 of the base plate 1. Throughout the process, the exhaust pipe 26 continuously regulates the pressure inside the box to ensure a stable internal environment. After casting is completed, the cover plate 3 and baffles 2 can be easily removed to take out the sand mold and castings. The entire process is convenient and efficient, fully demonstrating the multi-functional adjustable characteristics of this utility model's dry sand box and its advantages in improving production efficiency and ensuring product quality.

[0028] The above embodiments are exemplary and are intended to illustrate the technical concept and features of this utility model, so that those skilled in the art can understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A multifunctional adjustable dry sand box for 3D printing sand molds, characterized in that: include: The base plate (1) and a pair of L-shaped baffles (2) are rectangular. The pair of baffles (2) are centrally symmetrical and are assembled into a rectangular enclosure by screws. The enclosure is detachably installed on the base plate (1). A set of reinforcing blocks (20) are provided at the right angle of the inner side of the baffles (2). The reinforcing blocks (20) are triangular. Cover plate (3), the cover plate (3) can be detachably installed on the enclosure, the bottom plate (1), the enclosure and the cover plate (3) are combined to form a dry sand box; A set of limiting components (4) are arranged in an array inside the dry sand box to limit the sand mold.

2. The multifunctional adjustable dry sand box for 3D printing sand molds according to claim 1, characterized in that: The baffle (2) has a first flange (21) facing outward at its upper end, a second flange (22) facing outward at its lower end, and a third flange (23) facing outward on one side of the baffle (2). The first flange (21), the second flange (22), and the third flange (23) are all provided with mounting holes. The first flange (21) is detachably connected to the cover plate (3) through the mounting hole, the second flange (22) is detachably connected to the base plate (1) through the mounting hole, and a pair of baffles (2) are detachably connected to each other through the third flange (23).

3. The multifunctional adjustable dry sand box for 3D printing sand molds according to claim 2, characterized in that: The base plate (1) has a circular hole (11) in the middle. Under pressure, the liquid alloy is pressed into the sand mold from bottom to top through the circular hole (11).

4. The multifunctional adjustable dry sand box for 3D printing sand molds according to claim 3, characterized in that: The limiting component (4) includes a pair of guide posts (41), the lower ends of which are mounted on the base plate (1) and perpendicular to the base plate (1). The upper ends of the pair of guide posts (41) are connected to pressure grooves (42), which are parallel to the base plate (1) and can be adjusted and moved vertically along the guide posts (41).

5. A multifunctional adjustable dry sand box for 3D printing sand molds according to claim 4, characterized in that: A set of support bars (24) is provided on the outer side of the baffle (2), and the support bars (24) are vertically arranged between the first flange (21) and the second flange (22).

6. A multifunctional adjustable dry sand box for 3D printing sand molds according to claim 5, characterized in that: The support bar (24) is provided with a lifting handle (25).

7. A multifunctional adjustable dry sand box for 3D printing sand molds according to claim 6, characterized in that: The base plate (1) has a set of first handles (12) on the outer edge of opposite sides.

8. A multifunctional adjustable dry sand box for 3D printing sand molds according to claim 7, characterized in that: The cover plate (3) has a set of second handles (31) on opposite outer edges.

9. A multifunctional adjustable dry sand box for 3D printing sand molds according to claim 8, characterized in that: A set of exhaust pipes (26) are provided on the upper end of the baffle (2).

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