Anti-cracking box-stop-free sand box

Abstract

The utility model relates to an anti-cracking box-stop-free sand box which comprises a middle sand box body of a rectangular frame-shaped structure, a reinforcing structure is arranged on the outer side wall of the middle sand box body, a plurality of first connecting plates are annularly distributed on the inner wall of the middle sand box body, and the first connecting plates are vertically distributed at equal intervals. Annular flanges are integrally formed on the portions, at the two ends of the first connecting plates, of the inner wall of the middle sand box, a plurality of vertically-arranged first connecting plates are annularly distributed on the inner wall of the middle sand box, second connecting plates are fixedly connected to the sides, away from the inner wall of the middle sand box, of the first connecting plates, and the second connecting plates are perpendicular to the first connecting plates. After gravel is filled in the middle sand box to form a sand mold, the middle sand box can be stably connected with the sand mold through the barbs, and the problems that the sand mold slides down due to the action of gravity after drawing, cracks or even cracks occur, the casting quality is affected, and major potential safety hazards exist are solved as much as possible.

Description

Technical Field

[0001] This utility model belongs to the field of sand box technology, specifically relating to a crack-resistant, boxless sand box. Background Technology

[0002] Sand casting is a widely used casting method. As the name suggests, it involves making a mold using sand. Sand casting requires placing a finished part model or wooden model (pattern) in sand, then filling the pattern with sand in a sand box before pouring. When the pattern is removed from the box, the sand forms a mold.

[0003] Existing sand boxes often use welded horizontal bars to secure the sand mold. However, for sand boxes with large internal dimensions, the sand mold in the middle cannot be firmly connected to the sand box. After demolding, the sand mold often cracks or even breaks apart, causing molten iron to leak out from the cracks when the box is closed for pouring. In severe cases, this may cause the casting to be scrapped and pose a major safety hazard of burning workers. Utility Model Content

[0004] The purpose of this utility model is to provide a simple and reasonably designed crack-resistant boxless sand box to solve the above problems.

[0005] This utility model achieves the above objectives through the following technical solutions:

[0006] A crack-resistant, boxless sand box includes a central sand box with a rectangular frame structure. A reinforcing structure is provided on the outer wall of the central sand box. Multiple first connecting plates are arranged in a ring on the inner wall of the central sand box, with the first connecting plates vertically and equidistantly distributed. An annular flange is integrally formed on the inner wall of the central sand box at both ends of each of the first connecting plates. The ends of the first connecting plates are welded and fixed to the annular flanges. A second connecting plate is fixedly connected to the side of the first connecting plate away from the inner wall of the central sand box. The second connecting plate is perpendicular to the first connecting plate, and the second connecting plate and the first connecting plate together form a T-shaped structure, creating barbs between the two sides of the second connecting plate and the first connecting plate.

[0007] As a further optimization of this utility model, the reinforcement structure includes a first reinforcement frame with an annular structure fitted on the outer wall of the middle section of the intermediate sand box. The inner wall of the first reinforcement frame is welded to the outer surface of the intermediate sand box. A second reinforcement frame is also welded and fixed on the intermediate sand box on the upper and lower sides of the first reinforcement frame.

[0008] As a further optimization of this utility model, multiple connecting grooves are provided on the edges of both the upper and lower second reinforcing frames. The multiple connecting grooves are equidistantly distributed, and multiple vertically arranged reinforcing ribs are also provided between the second reinforcing frame and the first reinforcing frame. The two ends of the reinforcing ribs are fixed to the first reinforcing frame and the second reinforcing frame respectively, and the reinforcing ribs are staggered with the connecting grooves.

[0009] As a further optimization of this utility model, a set of mounting seats is fixedly connected to the outer walls of the front and rear sides of the intermediate sand box. The two sets of mounting seats are symmetrically arranged, and two connecting shafts are fixedly passed through the mounting seats. The two connecting shafts are symmetrically distributed vertically.

[0010] As a further optimization of this utility model, the middle sections of the first reinforcing frames on both the left and right sides of the intermediate sand box are fixedly installed with handles, which are made of flexible material.

[0011] As a further optimization of this utility model, air holes are provided on the side walls of the intermediate sand box between two adjacent first connecting plates. The air holes penetrate the side walls of the intermediate sand box and communicate with the outside of the intermediate sand box.

[0012] The beneficial effects of this utility model are as follows: multiple vertically arranged first connecting plates are distributed in a ring on the inner wall of the intermediate sand box. A second connecting plate is fixedly connected to the side of the first connecting plate away from the inner wall of the intermediate sand box. The second connecting plate is perpendicular to the first connecting plate, so that barbs are formed between the two sides of the second connecting plate and the first connecting plate. When sand and gravel are filled into the intermediate sand box to form a sand mold, the sand mold can be stably connected to the sand mold through the barbs, which can avoid the problem that the sand mold will slide down due to gravity after demolding, causing cracks or even splits, affecting the quality of the casting and posing a major safety hazard. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the first overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the second overall structure of this utility model;

[0015] Figure 3 This is a utility model Figure 2 A schematic diagram of the cross-sectional structure;

[0016] Figure 4 This is a utility model Figure 3 Enlarged view of a detail at point A in the middle.

[0017] In the diagram: 1. Intermediate sand box; 2. First reinforcing frame; 3. Second reinforcing frame; 4. Connecting groove; 5. Reinforcing rib; 6. Mounting base; 7. Connecting shaft; 8. Handle; 9. Annular flange; 10. First connecting plate; 11. Second connecting plate; 12. Air hole. Detailed Implementation

[0018] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0019] Example

[0020] like Figure 1 - Figure 4 As shown, a crack-resistant, boxless sand box includes a rectangular frame-shaped intermediate sand box 1. A reinforcing structure is provided on the outer wall of the intermediate sand box 1. The reinforcing structure includes a first reinforcing frame 2 with a ring structure fitted on the outer wall of the middle section of the intermediate sand box 1. The inner wall of the first reinforcing frame 2 is welded to the outer surface of the intermediate sand box 1. Second reinforcing frames 3 are also welded and fixed on the intermediate sand box 1 on the upper and lower sides of the first reinforcing frame 2. By welding the first reinforcing frame 2 to the middle section of the intermediate sand box 1 and welding the second reinforcing frames 3 to both ends of the intermediate sand box 1, the deformation resistance of the intermediate sand box 1 can be greatly improved while reasonably controlling the thickness of the side wall of the intermediate sand box 1. At the same time, the self-weight of the intermediate sand box 1 is effectively reduced without affecting the strength of the intermediate sand box 1, and raw materials are saved.

[0021] A set of mounting seats 6 is fixedly connected to the outer walls of the front and rear sides of the intermediate sand box 1. The two sets of mounting seats 6 are symmetrically arranged. Two connecting shafts 7 are fixedly passed through the mounting seats 6. The two connecting shafts 7 are symmetrically distributed vertically. The mounting seats 6 are used to fix the connecting shafts 7. Users can connect the outer upper sand box and lower sand box to the intermediate sand box 1 through the connecting shafts 7.

[0022] Multiple connecting slots 4 are provided on the edges of both the upper and lower second reinforcing frames 3. The multiple connecting slots 4 are equidistantly distributed, allowing users to connect and fix the edges of the upper and lower sand boxes to the middle sand box 1 using external bolts in conjunction with the connecting slots 4. This not only greatly improves the stability of the connection between the upper and lower sand boxes and the middle sand box 1, but also effectively reduces the gaps at the connection between the upper and lower sand boxes and the middle sand box 1, minimizing the leakage of molten iron during the pouring process.

[0023] Furthermore, multiple vertically arranged reinforcing ribs 5 are provided between the second reinforcing frame 3 and the first reinforcing frame 2. The two ends of the reinforcing ribs 5 are fixed to the first reinforcing frame 2 and the second reinforcing frame 3 respectively, which are used to connect the two second reinforcing frames 3 and the first reinforcing frame 2 to form a whole, further improving the deformation resistance of the intermediate sand box 1. The reinforcing ribs 5 and the connecting groove 4 are staggered to avoid interference from the reinforcing ribs 5 when installing the external bolt structure.

[0024] The middle section of the first reinforcing frame 2 on both the left and right sides of the intermediate sand box 1 is fixedly equipped with a handle 8. The handle 8 is designed to facilitate the user to move the intermediate sand box 1. The handle 8 is made of flexible material, which makes the user more comfortable when moving the intermediate sand box 1 and avoids the problem of the handle 8 pressing hard against the worker's hand during the process of moving the sand box 1, which could cause injury to the worker.

[0025] Multiple first connecting plates 10 are arranged in a ring on the inner wall of the intermediate sand box 1. The multiple first connecting plates 10 are vertically and equidistantly distributed. An annular flange 9 is integrally formed on the inner wall of the intermediate sand box 1 at both ends of the first connecting plate 10. The ends of the first connecting plates 10 are welded and fixed to the annular flange 9. The annular flange 9 can protect the connection between the ends of the first connecting plates 10 and the inner wall of the intermediate sand box 1, and minimize the problem of sand entering the weld when filling the intermediate sand box 1, which would affect the stability of the connection between the first connecting plate 10 and the inner wall of the intermediate sand box 1.

[0026] A second connecting plate 11 is fixedly connected to the side of the first connecting plate 10 away from the inner wall of the intermediate sand box 1. The second connecting plate 11 is set perpendicular to the first connecting plate 10. The second connecting plate 11 and the first connecting plate 10 together form a T-shaped structure, so that barbs are formed between the two sides of the second connecting plate 11 and the first connecting plate 10. When gravel is filled into the intermediate sand box 1 to form a sand mold, it can be stably connected to the sand mold through the barbs formed between the end of the first connecting plate 10 away from the intermediate sand box 1 and the second connecting plate 11. This avoids the sand mold from sliding down due to gravity after demolding, causing cracks or even breaking, which would lead to molten iron leaking out from the cracks when the mold is closed and poured. In severe cases, this could cause the casting to be scrapped and pose a major safety hazard of burning workers.

[0027] Air holes 12 are provided on the side wall of the intermediate sand box 1 between two adjacent first connecting plates 10. The air holes 12 penetrate the side wall of the intermediate sand box 1 and communicate with the outside of the intermediate sand box 1. Since there are tiny pores in the sand mold, the air holes 12 are provided on the side wall of the intermediate sand box 1 so that the air in the sand mold can be discharged through the air holes 12 during the casting process. This can minimize the problem of air bubbles being generated inside the casting due to incomplete discharge of air from the sand mold, which would affect the quality of the casting.

[0028] It should be noted that in this type of crack-resistant boxless sand box, multiple vertically arranged first connecting plates 10 are distributed in a ring on the inner wall of the intermediate sand box 1. A second connecting plate 11 is fixedly connected to the side of the first connecting plate 10 away from the inner wall of the intermediate sand box 1. The second connecting plate 11 is perpendicular to the first connecting plate 10, so that barbs are formed between the two sides of the second connecting plate 11 and the first connecting plate 10. When gravel is filled into the intermediate sand box 1 to form a sand mold, it can be stably connected to the sand mold through the barbs formed between the end of the first connecting plate 10 away from the intermediate sand box 1 and the second connecting plate 11. This minimizes the risk of the sand mold sliding down due to gravity after demolding, causing cracks or even splits, which could lead to molten iron leaking from the cracks during casting. In severe cases, this could result in the scrapping of the casting and pose a significant safety hazard of scalding workers.

[0029] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A crack-resistant, boxless sand box, comprising an intermediate sand box (1) with a rectangular frame structure, wherein a reinforcing structure is provided on the outer wall of the intermediate sand box (1), characterized in that: Multiple first connecting plates (10) are arranged in a ring on the inner wall of the intermediate sand box (1). The multiple first connecting plates (10) are vertically and equidistantly distributed. An annular flange (9) is integrally formed on the inner wall of the intermediate sand box (1) at both ends of the first connecting plate (10). The ends of the first connecting plate (10) are welded and fixed to the annular flange (9). A second connecting plate (11) is fixedly connected to the side of the first connecting plate (10) away from the inner wall of the intermediate sand box (1). The second connecting plate (11) is perpendicular to the first connecting plate (10). The second connecting plate (11) and the first connecting plate (10) together form a T-shaped structure, so that barbs are formed between the two sides of the second connecting plate (11) and the first connecting plate (10).

2. The crack-resistant, boxless sand-blocking box according to claim 1, characterized in that: The reinforcement structure includes a first reinforcement frame (2) in the shape of a ring, which is fitted on the outer wall of the middle section of the intermediate sand box (1). The inner wall of the first reinforcement frame (2) is welded to the outer surface of the intermediate sand box (1). A second reinforcement frame (3) is also welded and fixed on the intermediate sand box (1) on the upper and lower sides of the first reinforcement frame (2).

3. A crack-resistant, boxless sand-blocking box according to claim 2, characterized in that: Multiple connecting slots (4) are provided on the edges of the upper and lower two second reinforcing frames (3). The multiple connecting slots (4) are equidistantly distributed. Multiple vertically arranged reinforcing ribs (5) are also provided between the second reinforcing frame (3) and the first reinforcing frame (2). The two ends of the reinforcing ribs (5) are fixed to the first reinforcing frame (2) and the second reinforcing frame (3) respectively. The reinforcing ribs (5) and the connecting slots (4) are staggered.

4. A crack-resistant, boxless sand-blocking box according to claim 3, characterized in that: A set of mounting seats (6) is fixedly connected to the outer walls of the front and rear sides of the intermediate sand box (1). The two sets of mounting seats (6) are symmetrically arranged. Two connecting shafts (7) are fixedly inserted on the mounting seats (6). The two connecting shafts (7) are symmetrically distributed vertically.

5. A crack-resistant, boxless sand-blocking box according to claim 4, characterized in that: The middle section of the first reinforcing frame (2) on both the left and right sides of the intermediate sand box (1) is fixedly equipped with a handle (8), which is made of flexible material.

6. A crack-resistant, boxless sand-blocking box according to claim 1, characterized in that: Air holes (12) are provided on the side walls of the intermediate sand box (1) between two adjacent first connecting plates (10). The air holes (12) penetrate the side walls of the intermediate sand box (1) and communicate with the outside of the intermediate sand box (1).

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