Core box structure

Abstract

The utility model relates to the technical field of casting, discloses an improved core box structure, and aims to solve the problem that a traditional core box is short in service life due to the fact that vertical ribs are thin and easy to damage. The core box comprises an upper cover, a core box bottom, side edges and vertical ribs, four auxiliary supporting legs are additionally arranged at four corners of the upper cover, and the height of the auxiliary supporting legs is higher than that of the original vertical ribs; meanwhile, circular grooves are formed in the corresponding positions of the side edges, and the supporting legs are embedded into the grooves in the assembling process to form a stable supporting structure. When the core box upper cover is horizontally placed, the auxiliary supporting legs completely bear the weight, the vertical ribs are prevented from making contact with the ground, and therefore the hidden danger that the vertical ribs are damaged due to stress is eliminated. The auxiliary supporting legs are preferably made of cylindrical wear-resistant metal or engineering plastic, and the depth of the circular grooves is 1.2 times of the length of the supporting legs, so that the embedding stability is ensured. By optimizing stress distribution, the service life of the core box is remarkably prolonged, and the core box is simple in structure, easy to process and assemble and suitable for large-scale application in the field of sand casting.

Description

Technical Field

[0001] This utility model relates to the field of casting technology, specifically to a core box structure that avoids stress on the vertical ribs and extends service life. Background Technology

[0002] Traditional core boxes typically have only one vertical rib on the top cover. Because this rib is thin and directly in contact with the ground, it is easily damaged by the sand mold and gravity during repeated molding processes, shortening the core box's lifespan. Current technology lacks effective structural improvements to address this issue. Both the top cover and the bottom of the core box have a single, very thin vertical rib. Due to its structure, only this one rib protrudes from the top cover. After the sand has hardened after molding, the top cover needs to be separated upwards during molding. During this process, the rib is easily damaged because it is surrounded by the hardened sand mold. After removing the top cover, the side sills of the core box need to be removed as well. The top cover is then placed directly on the ground, with the rib acting as a support, bearing part of the weight of the top cover. The thin rib will suffer severe damage after repeated molding, significantly reducing the core box's lifespan. Summary of the Invention

[0003] The purpose of this invention is to provide a more durable core box structure by adding auxiliary support legs and matching circular grooves to avoid stress on the uprights and extend the service life.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a core box structure, including a core box top cover, a core box bottom, core box side rails and vertical ribs, wherein the core box top cover has four auxiliary support legs at its four corners, and the height of the auxiliary support legs is higher than that of the vertical ribs of the core box top cover; the corresponding positions of the core box side rails have four support leg grooves, and when the core box is assembled, the auxiliary support legs are embedded in the support leg grooves; when the core box top cover is laid flat, the auxiliary support legs fully support the weight of the core box top cover, and the vertical ribs do not contact the ground.

[0005] Preferably, the auxiliary leg is a cylindrical structure that matches the size of the leg groove.

[0006] Preferably, the auxiliary support leg is made of wear-resistant metal or engineering plastic.

[0007] Preferably, the thickness of the vertical rib is 13mm.

[0008] Preferably, the depth of the support leg groove is greater than the length of the auxiliary support leg embedding portion.

[0009] Compared with the prior art, the beneficial effects of this utility model are: the auxiliary support leg bears the entire weight, avoiding damage to the upright rib; the structure is simple and easy to process and assemble; and the service life of the core box is improved. Attached Figure Description

[0010] Figure 1 This is a structural diagram of a chip box in the existing technology.

[0011] Figure 2 This is a schematic diagram of a chip assembly using existing technology.

[0012] Figure 3 This is a front view of the core box cover of this utility model.

[0013] Figure 4 This is a view of the back of the core box cover of this utility model.

[0014] Figure 5 Enlarged view of the structure for the connection between the support leg and the circular groove.

[0015] Figure 6 This is a diagram showing the forces acting on the top cover when it is laid flat.

[0016] 1-Core box top cover, 2-Vertical rib, 3-Core box bottom, 4-Core box side sill, 5-Auxiliary support leg, 6-Support leg groove. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0018] This utility model addresses the problem in existing technologies where the top cover is placed directly on the ground, and the vertical ribs act as supports, bearing part of the weight of the core box top cover. However, these thin ribs tend to break after repeated shaping, significantly reducing the lifespan of the core box. The core box structure of this utility model, as described... Figures 3 to 6As shown, a core box structure includes a core box top cover 1, a core box bottom 3, core box side rails 4, and vertical ribs 2. The core box top cover 1 has four auxiliary support legs 5 at its four corners, and the height of the auxiliary support legs 5 is higher than the vertical ribs 2 of the core box top cover 1. The corresponding positions of the core box side rails 4 have four support leg grooves 6. When the core box is assembled, the auxiliary support legs 5 are embedded in the support leg grooves 6. When the core box top cover 1 is laid flat, the auxiliary support legs 5 fully support the weight of the core box top cover 1, and the vertical ribs 2 do not contact the ground. The auxiliary support legs 5 are cylindrical structures, made of wear-resistant metal (such as 45# steel) or engineering plastic (such as nylon), and their height exceeds the vertical ribs 2 by 2-5mm. The dimensions match the support leg grooves 6. The auxiliary support legs 5 are made of wear-resistant metal or engineering plastic. The thickness of the vertical ribs is 13mm. The depth of the support leg grooves 6 is greater than the length of the embedded portion of the auxiliary support legs 5. The groove diameter is slightly larger than the leg diameter (gap 0.1-0.3mm), and the depth is 1.2 times the leg length to ensure a stable embedding.

[0019] Usage: Four support leg slots 6 are designed on the side sill 4 of the core box, corresponding to the positions of the auxiliary support legs 5. When the core box is assembled, the auxiliary support legs 5 fit perfectly into the lower support leg slots 6. When the core box cover 1 is placed flat on the ground, the four auxiliary support legs 5 support the entire weight of the cover, while the upright rib 2 is suspended in the air and does not touch the ground, thus avoiding stress, protecting the upright rib 2, and greatly increasing the service life of the core box.

[0020] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A core box structure, characterized in that: The core box includes a top cover (1), a bottom (3), a side rail (4), and a vertical rib (2). The top cover (1) has four auxiliary legs (5) at its four corners. The height of the auxiliary legs (5) is higher than that of the vertical rib (2) of the top cover (1). The side rail (4) has four leg grooves (6) at corresponding positions. When the core box is assembled, the auxiliary legs (5) are embedded in the leg grooves (6). When the top cover (1) is laid flat, the auxiliary legs (5) fully support the weight of the top cover (1), and the vertical rib (2) does not contact the ground.

2. The core box structure according to claim 1, characterized in that: The auxiliary support leg (5) is a cylindrical structure that matches the size of the support leg groove (6).

3. The core box structure according to claim 1, characterized in that: The auxiliary support leg (5) is made of wear-resistant metal or engineering plastic.

4. The core box structure according to claim 1, characterized in that: The thickness of the vertical rib (2) is 13mm.

5. The core box structure according to claim 1, characterized in that: The depth of the support leg groove (6) is greater than the length of the embedded part of the auxiliary support leg (5).

Images