A wear-resistant sand box

Abstract

The utility model belongs to foundry sand box technical field especially relates to a wear -resisting sand box, including the square box body, the top surface and the bottom surface of box body all are provided with the box mouth mesa, the inside of box mouth mesa is provided with a circle of frame clamping groove, is provided with the detachable frame inlay in frame clamping groove, the both symmetrical sides of box mouth mesa all are provided with a row of support clamping groove, all are provided with the detachable support inlay in each support clamping groove, all are provided with a plurality of countersunk hole on frame inlay, support inlay, each countersunk hole all are provided with the locking bolt for connecting frame clamping groove, support clamping groove, the both symmetrical sides of two -sided box mouth mesa all are provided with the pin hole, wherein the both pin holes of the box mouth mesa located bottom surface all are provided with the detachable connection's bolt. Compared with the prior art, the wear -resisting sand box of the utility model is through the detachable high -hardness support inlay and frame inlay design, effectively disperses the box mouth pressure, enhances the wear resistance of key position, and reduces the maintenance cost.

Description

Technical Field

[0001] This utility model belongs to the field of casting sand box technology, and specifically relates to a wear-resistant sand box. Background Technology

[0002] In the casting production field, the casting sand box plays an irreplaceable and crucial role as a key piece of equipment, and its application is extremely widespread. The casting sand box provides a stable and controllable cavity environment for the molding of molten metal, and is a fundamental element for ensuring casting quality and production efficiency.

[0003] Currently, in actual production, due to cost considerations, most foundry sand boxes use relatively inexpensive large-particle foundry sand for equipment casting. While this choice controls production costs to some extent, it has led to a series of serious problems. Due to the inherent characteristics of large-particle foundry sand, the opening of the foundry sand box is subjected to frequent impacts from molten metal pouring, friction from molding sand, and mechanical stress from opening and closing the box during use. After a period of use, severe wear inevitably occurs at the opening.

[0004] This wear condition has numerous adverse effects on casting production. Firstly, worn casting sand boxes cannot guarantee the precise dimensions and shape of the cavities, leading to decreased dimensional accuracy of castings, poorer surface quality, and a significantly increased scrap rate, directly impacting the product's market competitiveness. Secondly, severely worn casting sand boxes must be returned to the factory for repair, which not only consumes significant time and labor costs but also causes production line shutdowns, reducing overall production efficiency. Furthermore, frequent returns for repair further increase maintenance costs and squeeze profit margins.

[0005] Therefore, how to effectively improve the wear resistance of casting sand boxes, extend their service life, and reduce maintenance costs has become a key issue that urgently needs to be addressed in the current casting industry. Solving this problem is of vital practical significance for improving the quality and efficiency of casting production, and enhancing the economic benefits and market competitiveness of enterprises. Summary of the Invention

[0006] In view of the shortcomings of the prior art, this utility model provides a wear-resistant sand box to solve the above problems.

[0007] This utility model discloses a wear-resistant sand box, comprising a square box body. Both the top and bottom surfaces of the box body are provided with a box opening platform. A border groove is provided on the inner side of the box opening platform, and a detachable border strip is installed within the border groove. A row of support grooves is provided on each of the two symmetrical sides of the box opening platform, and a detachable support block is installed in each support groove. Several countersunk holes are provided on the border strips and support blocks, and a locking bolt for connecting the border grooves and support grooves is installed in each countersunk hole. Pin holes are provided on both symmetrical sides of the box opening platform, and detachable pins are installed at the two pin holes on the bottom box opening platform. Alternating clearance grooves corresponding to the pins are provided on both sides of the box body. Furthermore, the height of the support insert is higher than the box opening platform and the frame insert.

[0008] Furthermore, the rigidity of the support insert and the frame strip is greater than that of the box body.

[0009] Furthermore, the housing is made of cast iron, and the support inserts and frame strips are made of 45# steel.

[0010] Furthermore, the hardness of the support insert and the frame strip is greater than or equal to HRC50, and the hardness of the housing is greater than or equal to HRC40.

[0011] Furthermore, the border strip includes several straight strips and right-angle strips. A right-angle strip is provided at each of the four corners of the border slot, and the four right-angle strips are connected by straight strips.

[0012] Furthermore, the outer included angle of the right-angled strip is set as an outer chamfer, and the inner included angle is set as an inner rounded corner.

[0013] Furthermore, the end of the pin is conical.

[0014] Furthermore, a number plate is provided on one side of the box.

[0015] Compared with existing technologies, this utility model's wear-resistant sand box effectively disperses pressure at the box opening through a detachable high-hardness support block and frame strip design, enhancing the wear resistance of key parts. This solves the problem of easy wear at the box opening caused by large-particle casting sand in traditional sand boxes, reducing maintenance costs. Simultaneously, the precise positioning structure and number plate setting improve the stability of sand box use and production management efficiency. Attached Figure Description

[0016] Figure 1 This is a front view of the present invention; Figure 2 This is a top view of the present invention.

[0017] In the diagram: 1. Box body; 2. Box opening platform; 3. Frame slot; 4. Frame strip; 5. Support slot; 6. Support block; 7. Countersunk hole; 8. Locking bolt; 9. Pin hole; 10. Pin; 11. Clearance groove; 12. Straight strip; 13. Right angle strip; 14. Number plate. Detailed Implementation

[0018] To better understand this utility model, the embodiments of this utility model will be explained in detail below with reference to the accompanying drawings.

[0019] It should be noted that the directions "front, back, left, right, up, down" mentioned in the text are all relative to the direction of the text. Figure 1 The directions are based on "front, back, left, right, up, down".

[0020] like Figure 1 and Figure 2 As shown, this utility model discloses a wear-resistant sandbox, comprising a square box body 1 commonly found in the prior art. Both the top and bottom surfaces of the box body 1 are provided with a box opening platform 2. The box opening platform 2 is a key operating part of the sandbox, undertaking the important functions of opening and closing the box and cooperating with molds and other components. A frame groove 3 is provided on the inner side of the box opening platform 2, providing an installation position for a frame insert 4. The frame insert 4 adopts a detachable design, and is securely connected to the frame groove 3 using locking bolts 8 through several countersunk holes 7 on the frame insert 4. This detachable connection method allows for convenient and quick replacement of the frame insert 4 after wear, without requiring extensive repairs to the entire sandbox.

[0021] On both symmetrical sides of the sandbox opening platform 2, a row of support slots 5 is provided, and each support slot 5 also contains a detachable support block 6. The support block 6 is also connected to the support slot 5 via countersunk holes 7 using locking bolts 8. The height of the support block 6 is higher than that of the sandbox opening platform 2 and the frame strip 4. This design provides additional support and protection for the sandbox opening during use, distributing the pressure on the opening and reducing wear. At the same time, the hardness of the support block 6 and the frame strip 4 is greater than that of the sandbox body 1 to enhance the wear resistance of key parts of the sandbox. Specifically, the sandbox body 1 is made of cast iron, while the support block 6 and the frame strip 4 are made of 45# steel. The support block 6 and the frame strip 4 are hardened to a hardness greater than or equal to HRC50, and the sandbox body 1 is also hardened to a hardness greater than or equal to HRC40. This difference in hardness ensures that the support block 6 and the frame strip 4 are not easily worn during long-term use, thereby extending the service life of the sandbox.

[0022] Pin holes 9 are provided on both symmetrical sides of the two box opening platforms 2 on the top and bottom surfaces. The two pin holes 9 on the bottom box opening platform 2 are equipped with detachable pins 10. For example, the top of the pin 10 can be secured by a limiting step corresponding to the pin hole 9. After the pin 10 is inserted from the bottom of the pin hole 9, a screw connecting the pin 10 is inserted from the top of the pin hole 9 and then locked. Alternating clearance grooves 11 corresponding to the pins 10 are provided on both sides of the box body 1. The end of the pin 10 is designed in a conical shape. This shape facilitates the smooth insertion of the pin 10 into the pin hole 9, achieving precise positioning and secure connection of the upper and lower sand boxes, ensuring the stability of the sand boxes during the casting process, and preventing the quality of the casting from being affected by sand box shaking or misalignment.

[0023] like Figure 2 As shown, the frame insert 4 includes several straight inserts 12 and right-angle inserts 13. By employing a modular assembly structure, it allows for individual replacement of parts in key wear areas during maintenance, reducing costs. A right-angle insert 13 is provided at each of the four corners of the frame slot 3, and the four right-angle inserts 13 are connected by straight inserts 12. Furthermore, the outer corners of the right-angle inserts 13 are chamfered, and the inner corners are rounded. The chamfered design reduces frictional contact between the right-angle inserts 13 and the frame slot 3 during installation, improving the efficiency of maintenance and disassembly; the rounded inner corner design facilitates the smooth filling and removal of molding sand, improving the convenience of casting operations.

[0024] In addition, a number plate 14 is provided on one side of the box 1. The number plate 14 can be used to identify the sand box's number, specifications, and other information, which facilitates the management and identification of the sand boxes during the production process and improves production efficiency.

[0025] The usage and principle of this utility model: When using this wear-resistant sand box, first select the appropriate size sand box according to production needs. Install the support insert 6 and the frame strip 4 into the support slot 5 and frame slot 3 respectively using locking bolts 8, ensuring a secure installation. When closing the upper and lower sand boxes, accurately insert the pin 10 on the bottom box opening platform 2 into the pin hole 9 on the top box opening platform 2 to achieve precise positioning and connection of the sand box. During the casting process, the support insert 6 and frame strip 4, with their high hardness and reasonable structural design, effectively resist the impact of molten metal pouring, molding sand friction, and mechanical stress caused by opening and closing the box, reducing wear at the box opening. When the support insert 6 or frame strip 4 becomes worn, simply loosen the locking bolts 8, remove the worn frame strip 4, and replace it with a new one or a partial replacement; no complex repair of the entire sand box is required. The required sand box can be quickly identified and retrieved using the number plate 14, improving the efficiency and accuracy of production management.

[0026] In the description of this utility model, it should be understood that the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, unless otherwise specified and limited, it should be noted that the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to mechanical or electrical connections, or internal connections between two components, and can be direct connections or indirect connections through an intermediate medium. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0027] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A wear-resistant sand box, comprising a square box body (1), wherein the top and bottom surfaces of the box body (1) are provided with a box opening platform (2), characterized in that: The inner side of the box opening platform (2) is provided with a ring of frame slots (3), and a detachable frame strip (4) is provided in the frame slots (3). A row of support slots (5) is provided on both symmetrical sides of the box opening platform (2). A detachable support block (6) is provided in each support slot (5). Several countersunk holes (7) are provided on the frame strip (4) and the support block (6). A locking bolt (8) for connecting the frame slots (3) and the support slots (5) is provided in each countersunk hole (7). Pin holes (9) are provided on both symmetrical sides of the box opening platform (2). A detachable pin (10) is provided at the two pin holes (9) on the bottom side of the box opening platform (2). The two sides of the box body (1) are provided with clearance grooves (11) corresponding to the pins (10).

2. The wear-resistant sand box as described in claim 1, characterized in that: The height of the support block (6) is higher than the box opening table (2) and the frame strip (4).

3. The wear-resistant sand box as described in claim 2, characterized in that: The support insert (6) and the frame strip (4) have a higher hardness than the box body (1).

4. The wear-resistant sand box as described in claim 3, characterized in that: The box body (1) is a cast iron box body, and the support block (6) and the frame strip (4) are made of No. 45 steel.

5. A wear-resistant sand box as described in claim 4, characterized in that: The hardness of the support insert (6) and the frame strip (4) is greater than or equal to HRC50, and the hardness of the box body (1) is greater than or equal to HRC40.

6. The wear-resistant sand box as described in claim 5, characterized in that: The border strip (4) includes several straight strips (12) and right-angle strips (13). A right-angle strip (13) is provided at each of the four corners of the border slot (3). The four right-angle strips (13) are connected by straight strips (12).

7. A wear-resistant sand box as described in claim 6, characterized in that: The outer included angle of the right-angled strip (13) is set as an outer chamfer, and the inner included angle is set as an inner rounded corner.

8. A wear-resistant sand box as described in claim 1, characterized in that: The end of the pin (10) is conical.

9. A wear-resistant sand box as described in claim 1, characterized in that: A number plate (14) is provided on one side of the box (1).

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