Support and sand core assembly
By setting up a multi-directional support bracket in the sand core through groove, the corrosion resistance is enhanced by using stainless steel material and zinc layer, the fragility problem of the sand core under the action of external forces is solved, the stability and durability of the sand core are improved, and the stability and durability of the sand core are reduced. The cost.
Patent Information
- Application Number
- CN202420126010.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-18
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-01-18
AI Technical Summary
During the manufacturing process, the sand core used to form the inner holes or cavity of the casting is weak due to its thin structure and is easily deformed or broken when subjected to external forces.
A bracket is designed, including two oppositely arranged side support and connecting portions, through which the limits provide multi-directional strength support within the sand core through grooves, reducing the risk of deformation and fracture. The bracket is made of stainless steel, with a zinc layer on the surface, the clamps are hook-shaped to adapt to complex shapes, and the support area is optimized through an isosceles trapezoidal structure.
It improves the overall stability and durability of the sand core, reduces the risk of deformation and fracture caused by external forces, and is cost-effective and convenient to operate, solving the fragility of the sand core under the action of external forces.
Smart Images
Figure CN222175867U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of casting auxiliary equipment, in particular to a bracket and a sand core component. Background Art
[0002] During the manufacturing process, the sand core used to form the inner hole or cavity of the casting is usually fragile due to its thin structure. For example, there is a through groove in the engine water cavity structure, which is a fragile part of the engine water cavity structure. When the through groove is subjected to external forces (such as torque during the core assembly and transportation process, buoyancy and shrinkage force during the pouring and condensation of molten iron), it is easy to cause the sand core to deform or break. Utility Model Content
[0003] The purpose of the utility model is to at least solve the problem that the sand core is easily deformed or broken when subjected to external force. This purpose is achieved through the following technical solutions:
[0004] The first aspect of the utility model provides a bracket for supporting the through slot of the sand core body, comprising:
[0005] A support portion, the support portion comprising two oppositely disposed side surfaces;
[0006] Two connecting parts are arranged at intervals, and the two connecting parts are respectively connected to the two side surfaces in a one-to-one correspondence. The two connecting parts are respectively provided with limiting members, and the limiting members can be arranged in the through slot and are used to support the through slot.
[0007] According to the bracket of the utility model, a support portion including two oppositely arranged side surfaces is specially designed for supporting the through slot of the sand core body, and these side surfaces effectively support the inner wall of the through slot through the limiter of the connecting portion. This design realizes multi-directional strength support, so that the sand core can remain stable under various external forces, reducing the risk of deformation and fracture caused by external forces. This structure not only improves the overall stability and durability of the sand core, but also has cost-effectiveness due to its simple design and manufacturing process. Therefore, the bracket of the utility model not only improves the stability and durability of the sand core body, but also takes into account cost efficiency and ease of operation, and effectively solves the problem in the prior art that the sand core is easily deformed or fractured when subjected to external forces.
[0008] In addition, the bracket according to the utility model may also have the following additional technical features:
[0009] In some embodiments of the utility model, the limiting member includes a first limiting plate, a second limiting plate and a third limiting plate connected in sequence, the second limiting plate is connected to the side of the supporting part and is used to abut against the inner wall of the through groove, the first limiting plate and the third limiting plate are respectively arranged on the same side of the second limiting plate, and the first limiting plate and the third limiting plate are used to jointly clamp the side wall of the through groove.
[0010] In some embodiments of the present utility model, the angle between the first limiting plate and the second limiting plate is an obtuse angle;
[0011] And / or, the angle between the third limiting plate and the second limiting plate is an obtuse angle.
[0012] In some embodiments of the present invention, both the first limiting plate and the third limiting plate are provided with a rounded chamfer on a side away from the supporting portion.
[0013] In some embodiments of the utility model, the connecting portion includes a clamping member, and the clamping member includes a first clamping structure, a second clamping structure, and a third clamping structure connected in sequence, the first clamping structure and the third clamping structure are respectively arranged on the same side of the second clamping structure, at least part of the first clamping structure is used to abut against the outer wall of the sand core body, the second clamping structure is used to abut against the top surface of the sand core body, and the third clamping structure is used to abut against the inner wall of the through groove.
[0014] In some embodiments of the present invention, the included angle between the first clamping structure and the second clamping structure is smaller than the included angle between the outer wall and the top surface of the sand core body.
[0015] In some embodiments of the present invention, the support portion is a support plate, and the thickness of the support plate is 1.5 mm-2.5 mm.
[0016] In some embodiments of the present invention, the bracket is a stainless steel piece.
[0017] In some embodiments of the present invention, the surface of the bracket is coated with a zinc layer.
[0018] The second aspect of the utility model proposes a sand core assembly, including the above-mentioned bracket and a sand core body, wherein the sand core body includes a plurality of sand core cavities connected in sequence, and a through groove is provided between at least two adjacent sand core cavities, and the limiting members of the two connecting parts are respectively arranged in the through groove and used to support the through groove. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] By reading the detailed description of the preferred embodiment below, various other advantages and benefits will become clear to those of ordinary skill in the art. The accompanying drawings are only used for the purpose of illustrating the preferred embodiment and are not to be considered as limiting the present invention. Moreover, the same reference numerals are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:
[0020] Figure 1 The schematic diagram of the structure of the bracket according to the embodiment of the utility model is schematically shown;
[0021] Figure 2 Schematically shows a front view of a bracket according to an embodiment of the utility model;
[0022] Figure 3 Schematically shows a bottom view of a bracket according to an embodiment of the utility model;
[0023] Figure 4 The structural diagram of the sand core assembly according to the embodiment of the utility model is schematically shown.
[0024] The reference numerals are as follows:
[0025] 100, bracket; 10, support part; 20, connection part; 21, first clamping structure; 22, second clamping structure; 23, third clamping structure; 24, limiter; 241, first limit plate; 242, second limit plate; 243, third limit plate; 2411, round chamfer;
[0026] 200. Sand core body; 201. Pass-through slot. DETAILED DESCRIPTION
[0027] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.
[0028] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.
[0029] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.
[0030] For ease of description, spatial relative terms may be used herein to describe the relationship of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure is turned over, then the elements described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." can include both above and below orientations.
[0031] In order to facilitate the description of the structure of the bracket 100, the bracket 100 is first introduced on the sand core body 200. Figure 4As shown, the sand core body 200 is a plurality of intersecting cylindrical sand core cavities (only two are shown in the figure), and a through groove 201 is provided at the intersection of the sand core cavities to connect the insides of the two sand core cavities, and the through groove 201 extends from one end of the intersection of the two sand core cavities to the other end, but the through groove 201 does not contact the other end of the intersection of the two sand core cavities. Therefore, the through groove 201 is U-shaped, with two spaced and opposite inner walls.
[0032] like Figures 1 to 3 As shown, according to the embodiment of the utility model, a bracket 100 is proposed, which is used to support the through slot 201 of the sand core body 200. The bracket 100 includes a support portion 10 and two connecting portions 20. The support portion 10 includes two oppositely arranged side surfaces. The two connecting portions 20 are arranged at intervals. The two connecting portions 20 are respectively connected to the two side surfaces in a one-to-one correspondence. The two connecting portions 20 are respectively provided with a stopper 24, which is arranged in the through slot 201 and used to support the through slot 201. Specifically, the support portion 10 is arranged at a suitable position in the through slot 201, so that the support portion 10 provides a supporting force to the two inner walls of the through slot 201 through the stopper 24.
[0033] According to the bracket 100 of the utility model, a support portion 10 including two oppositely arranged side surfaces is specially designed for supporting the through slot 201 of the sand core body 200, and these side surfaces effectively support the inner wall of the through slot 201 through the limiter 24 of the connecting portion 20. This design realizes multi-directional strength support, so that the sand core can remain stable under various external forces, reducing the risk of deformation and fracture caused by external forces. This structure not only improves the overall stability and durability of the sand core, but also has cost-effectiveness due to its simple design and manufacturing process. Therefore, the bracket 100 of the utility model not only improves the stability and durability of the sand core body 200, but also takes into account cost efficiency and ease of operation, and effectively solves the problem in the prior art that the sand core is easily deformed or fractured when subjected to external forces.
[0034] It can be understood that the limiting member 24 includes a first limiting plate 241, a second limiting plate 242 and a third limiting plate 243 connected in sequence, the first limiting plate 241 and the third limiting plate 243 are respectively arranged on the same side of the second limiting plate 242, the second limiting plate 242 is connected to the side of the support portion 10 and is used to abut against the inner wall of the through groove 201, and the first limiting plate 241 and the third limiting plate 243 are used to clamp the side walls on both sides of the through groove 201 together. In another specific embodiment (such as Figure 3As shown in the figure, the first limiting plate 241, the second limiting plate 242 and the third limiting plate 243 are combined to form a limiting member 24 of a C-shaped structure. The first limiting plate 241 and the second limiting plate 242 are connected to the side walls on both sides of the through groove 201 to prevent the connection part 20 from being displaced in the through groove 201. At the same time, the limiting member 24 can provide necessary support on the side walls of the through groove 201, thereby preventing the sand core body 200 from being deformed or broken due to external forces (such as torsion or buoyancy) during the casting process. The first limiting plate 241, the second limiting plate 242 and the third limiting plate 243 can be an integrally formed structure, or the first limiting plate 241, the second limiting plate 242 and the third limiting plate 243 can be connected by welding. At the same time, the second limiting plate 242 and the support part 10 can also be an integrally formed structure, or be connected by welding.
[0035] Specifically, the angle between the first limiting plate 241 and the second limiting plate 242 is an obtuse angle, and / or the angle between the third limiting plate 243 and the second limiting plate 242 is an obtuse angle. Therefore, part of the first limiting plate 241 and / or part of the third limiting plate 243 abuts against the sand core body 200, that is, there is a gap between the first limiting plate 241 and the third limiting plate 243 and the sand core body 200, and the gap allows molten iron to flow in, thereby enhancing the fusion between the bracket 100 and the molten iron.
[0036] Specifically, the first limiting plate 241 and the third limiting plate 243 are both provided with a rounded chamfer 2411 on the side away from the support portion 10. The provision of the rounded chamfer 2411 reduces potential damage to the surface of the sand core, especially at the curved portion of the U-shaped through groove 201. In addition, the design of the rounded chamfer 2411 also helps to reduce stress concentration during the casting process, avoiding the breakage or deformation of the sand core at these key locations, thereby ensuring the quality and precision of the casting. Therefore, through the design of the rounded chamfer 2411, the limiting member 24 not only reduces the risk of damage to the sand core body 200 while providing necessary support, but also enhances the stability and safety of the casting process.
[0037] It can be understood that the connecting portion 20 includes a clamping member, which includes a first clamping structure 21, a second clamping structure 22 and a third clamping structure 23 connected in sequence, at least part of the first clamping structure 21 is used to abut against the outer wall of the sand core body 200, the second clamping structure 22 is used to abut against the top surface of the sand core body 200, and the third clamping structure 23 is used to abut against the inner wall of the through groove 201. The first clamping structure 21, the second clamping structure 22 and the third clamping structure 23 are combined to form a hook-type structure clamping member, and the third clamping structure 23 is connected to the second limiting plate 242, and the connection method can be one-piece molding or welding connection. The clamping member is a hook-type structure, and the clamping member is used to clamp on the sand core body 200. As Figure 4As shown, the clamping piece is a hook-shaped structure, which is hung on the shell wall at the intersection of the two sand core bodies 200. The hook-shaped structure of the fixing piece can effectively clamp the shell wall of the sand core body 200, and can maintain stability even in the U-shaped through groove 201 with a more complex structure. This clamping method is particularly suitable for preventing the sand core from being deformed or broken due to mechanical stress during the casting process, especially in the curved part of the through groove 201. The design of the hook-shaped structure takes into account the unique shape of the sand core and the area that requires additional support, thereby providing effective support without affecting the structure of the sand core body 200. In addition, the clamping piece with a hook-shaped structure is more convenient to install on the sand core body 200.
[0038] Specifically, the angle between the first clamping structure 21 and the second clamping structure 22 is smaller than the angle between the outer wall and the top surface of the sand core body 200, specifically less than about 1° to 2°. For example, the angle between the outer wall and the top surface of the sand core body 200 is 91°, and the angle between the second clamping structure 22 and the first clamping structure 21 can be 90°, because during the installation process, as the support portion 10 enters the through groove 201, the sand core body 200 will produce a slight deformation, and the angle between the first clamping structure 21 and the second clamping structure 22 is slightly smaller than the angle between the outer wall and the top surface of the sand core body 200, so that the first clamping structure 21 can better fit the sand core, and the connection between the first clamping structure 21 and the second clamping structure 22 has a certain gap, which can not only play a clamping role, but also increase the fusion with molten iron. It should be noted that the length of the third clamping structure 23 should not be too long.
[0039] It is understandable that the support portion 10 is a support plate, and the support plate is an isosceles trapezoidal structure to optimize the support for the U-shaped through groove 201 in the sand core body 200 composed of multiple intersecting sand core cavities. The design of the isosceles trapezoidal structure reduces the amount of material used while providing sufficient support area and strength, thereby reducing manufacturing costs. Further, the two side edges of the isosceles trapezoid can be designed to match the shape of the inner wall of the through groove 201 of the sand core body 200, thereby providing more accurate and stable support. At the bottom edge of the isosceles trapezoid, reinforcing ribs or raised portions can be added to enhance its support capacity for the sand core body 200, especially when the weight of the sand core body 200 is large or is subjected to a large external force.
[0040] Specifically, Figure 3 As shown, Figure 3The thickness of the support plate is shown at a in the figure, and the thickness of the support plate is 1.5mm to 2.5mm, so that the support part 10 can be better integrated with the molten iron. At the same time, the thickness of the support part 10 is 1.5mm-2.5mm, and this thickness range is optimized to provide sufficient structural strength to support the sand core body 200. In addition, the thickness of the support plate can be adjusted according to the weight and shape of the sand core body 200 to better adapt to different casting needs. For example, for a heavier or complex-shaped sand core body 200, the support plate can be selected to have a thickness close to 2.5mm to provide a stronger support force. For a lighter or simpler-structured sand core body 200, a thickness close to 1.5mm can be selected to improve the economy of the material and reduce the overall weight. Further, the material of the support part 10 can be selected from an alloy material with high strength and good toughness to ensure that the bracket 100 can maintain stability and durability in a casting environment subjected to high temperature and mechanical stress.
[0041] Specifically, the bracket 100 is a stainless steel part, and the stainless steel material is selected from special stainless steel with high heat resistance, good mechanical strength and excellent corrosion resistance, such as 304 or 316 stainless steel. This material can ensure the stability and durability of the bracket 100 in a high-temperature casting environment, while preventing corrosion or chemical reactions when in contact with the sand core body 200 or the casting material. Furthermore, the stainless steel material of the bracket 100 can be strengthened by a special heat treatment process, such as solution treatment and aging hardening, to improve its performance in high temperature and high pressure environments. The selection and subsequent treatment of this stainless steel material not only improves the overall performance of the bracket 100, but also extends its service life and reduces the long-term use cost.
[0042] Specifically, the surface of the bracket 100 is coated with a zinc layer, which is applied by electroplating, hot-dip galvanizing or spraying to enhance the corrosion resistance and wear resistance of the bracket 100. This zinc layer not only provides additional protection for the stainless steel material to prevent damage in high temperature and corrosive environments, but also improves the overall durability of the bracket 100 due to its good adhesion and uniform covering ability. In addition, the presence of the zinc layer promotes contact and heat exchange between the molten iron and the surface of the bracket 100, thereby helping to distribute heat more evenly during the casting process and reduce uneven solidification and shrinkage of the molten iron during cooling. Further, the zinc layer can be optimized by a specific alloying process to enhance its fusion and thermal conductivity with the molten iron. Therefore, the addition of this zinc layer not only improves the protection of the bracket 100, but also helps the fusion of the molten iron with the bracket 100.
[0043] This embodiment also provides a sand core assembly, which includes the above-mentioned bracket 100 and the sand core body 200. The sand core body 200 includes a plurality of sand core cavities connected in sequence, and a through groove 201 is provided between at least two adjacent sand core cavities. The limiting members 24 of the two connecting parts 20 are respectively arranged in the through groove 201 and are used to support the through groove 201.
[0044] Specifically, the support 100 is used to accurately adapt to the specific shape and size of the through slot 201 of the sand core body 200. In particular, the cross section of the support portion 10 is an isosceles trapezoidal structure, wherein the upper bottom is located at the center of the through slot 201 of the sand core body 200, the lower bottom is close to the opening of the sand core body 200, the overall height accounts for one-fourth of the height of the through slot 201 of the sand core body 200, and the thickness is set to 2 mm. This design promotes fusion with molten iron while maintaining the shape of the sand core body 200, ensuring a moderate volume to facilitate the flow and heat exchange of molten iron.
[0045] The stopper 24 of the bracket 100 has an arc transition and an appropriate gap, allowing molten iron to enter and enhance the fusion of the molten iron and the bracket 100. The second clamping structure 22 of the clamping member is a planar structure, which abuts against the top surface of the sand core body 200, while retaining the necessary gap to enhance the fusion of the molten iron. The angle between the third clamping structure 23 and the second clamping structure 22 of the clamping member is slightly smaller than the angle between the outer wall and the top surface of the sand core body 200. For example, when the angle between the outer wall and the top surface of the sand core body 200 is 91°, the angle between the third clamping structure 23 and the second clamping structure 22 can be designed to be 90° to promote better fit during installation, and leave an appropriate gap at the tail to enhance the fusion of the molten iron.
[0046] The length of the bracket 100 takes into account the requirements of molten iron fusion and avoids being too long to reduce the difficulty of fusion, while ensuring sufficient stability and support effect.
[0047] The above is only a preferred specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.
Claims
1. A bracket for supporting the through slot of the sand core body. It is characterized in that include: A support portion, the support portion comprising two oppositely disposed side surfaces; Two connecting parts are arranged at intervals, and the two connecting parts are respectively connected to the two side surfaces in a one-to-one correspondence. The two connecting parts are respectively provided with limiting members, and the limiting members can be arranged in the through slot and are used to support the through slot.
2. The bracket according to claim 1, It is characterized in that The limiting member includes a first limiting plate, a second limiting plate and a third limiting plate which are connected in sequence, the second limiting plate is connected to the side of the supporting portion and is used to abut against the inner wall of the through groove, the first limiting plate and the third limiting plate are respectively arranged on the same side of the second limiting plate, and the first limiting plate and the third limiting plate are used to jointly clamp the side wall of the through groove.
3. The bracket according to claim 2, It is characterized in that The included angle between the first limiting plate and the second limiting plate is an obtuse angle; And / or, the angle between the third limiting plate and the second limiting plate is an obtuse angle.
4. The bracket according to claim 2, It is characterized in that The first limiting plate and the third limiting plate are both provided with a rounded chamfer on a side away from the supporting portion.
5. The bracket according to claim 1, It is characterized in that The connecting portion includes a clamping member, which includes a first clamping structure, a second clamping structure and a third clamping structure connected in sequence, the first clamping structure and the third clamping structure are respectively arranged on the same side of the second clamping structure, at least a portion of the first clamping structure is used to abut against the outer wall of the sand core body, the second clamping structure is used to abut against the top surface of the sand core body, and the third clamping structure is used to abut against the inner wall of the through groove.
6. The bracket according to claim 5, It is characterized in that The included angle between the first clamping structure and the second clamping structure is smaller than the included angle between the outer wall and the top surface of the sand core body.
7. The stent according to any one of claims 1 to 6, It is characterized in that The support portion is a support plate, and the thickness of the support plate is 1.5 mm-2.5 mm.
8. The stent according to any one of claims 1 to 6, It is characterized in that The bracket is made of stainless steel.
9. The support according to claim 8, It is characterized in that The surface of the bracket is coated with a zinc layer.
10. A sand core assembly, It is characterized in that It comprises a bracket according to any one of claims 1 to 9, and also comprises a sand core body, the sand core body comprises a plurality of sand core cavities connected in sequence, a through groove is provided between at least two adjacent sand core cavities, and the limiting members of the two connecting parts are respectively arranged in the through groove and used to support the through groove.