Flexibly assemblable riser sleeve

Abstract

A flexibly assemblable riser sleeve, comprising arc-shaped plates (1) and straight plates (2). One end of each arc-shaped plate (1) is provided with an arc-shaped plate recessed portion (1-1), and the other end is provided with an arc-shaped plate protruding portion (1-2), so that the plurality of arc-shaped plates (1) are lapped with each other by means of the recessed portions (1-1) and the protruding portions (1-2) of the arc-shaped plates (1) adjacent to the recessed portions (1-1), to form a circular or obround riser structure. One end of each straight plate (2) is provided with a straight plate recessed portion (2-1), and the other end is provided with a straight plate protruding portion (2-2), so that the plurality of straight plates (2) are lapped with each other by means of the recessed portions (2-1) and the protruding portions (2-2) of the straight plates (2) adjacent to the recessed portions (2-1), to form a linearly assembled structure. The arc-shaped plates (1) and the straight plates (2) can be combined to form a circular or obround riser structure. The riser sleeve avoids production and inventory problems caused by fixed sizes of conventional riser sleeves, and is convenient to operate; in addition, the design of recessed structures and protruding structures ensures the stability after assembly, thereby effectively improving the exothermic and insulating effects of the riser sleeve.

Description

A riser sleeve that can be flexibly assembled

[0001] This application claims priority to the following Chinese patent application: Chinese Patent Application No. 202411621876.8, filed on November 14, 2024, entitled "A Riser Sleeve that Can Be Flexibly Assembled". The entire contents of that patent application are incorporated herein by reference. Technical Field

[0002] This disclosure relates to the field of casting technology, and in particular to a riser sleeve that can be flexibly assembled. Background Technology

[0003] In the casting process, riser sleeves are a commonly used auxiliary tool to maintain the temperature of the casting and ensure the feeding of the metal. Currently, riser sleeves on the market are mainly divided into two types, suitable for making larger risers. However, both of these conventional riser sleeves have significant shortcomings in use, affecting the efficiency and flexibility of their widespread application.

[0004] Type 1: One-piece molded riser sleeve, fixed size, ready to use.

[0005] One-piece molded riser sleeves have pre-defined dimensions and are typically formed in a single step. However, this design has the following drawbacks:

[0006] Numerous molds and high costs: Each size and specification requires a separate mold, resulting in a large number of molds and high mold-making costs, which leads to serious capital occupation.

[0007] Production organization difficulties: During the production process, it is necessary to frequently switch molds to meet the production needs of different sizes and specifications, resulting in low production efficiency and increased organizational difficulty.

[0008] Large size and high storage and transportation costs: The riser sleeve occupies a large volume, resulting in high storage and transportation costs, which is not conducive to inventory management.

[0009] Non-adjustable dimensions: The dimensions are fixed, making it difficult to adjust or change them according to the casting process requirements, which limits its application in diverse casting processes.

[0010] Capital tied up in inventory: Due to the need to stock various specifications and models of risers, inventory costs are high, and capital and storage space are tied up.

[0011] Uncuttable: When the size of the riser sleeve cannot fully meet the casting requirements, riser sleeves that are too small cannot be used; riser sleeves that are too large are also difficult to cut, resulting in material waste.

[0012] The second type: a plate-shaped riser sleeve with V-grooves, connected in series with a mesh skeleton, used for enclosure.

[0013] Another riser sleeve design employs a plate-like structure with V-grooves, which is formed by connecting a series of mesh skeletons during use to flexibly adapt to different sizes. However, while this structural design solves some of the problems of the first type of riser sleeve, it still has the following shortcomings:

[0014] The manufacturing process is complex: the mesh skeleton needs to be manually embedded during manufacturing, and the process of combining it with the heat-generating and heat-insulating materials is relatively complicated, which increases the production cost.

[0015] Material separation problem: The mesh skeleton and the heating and insulation material are not a single structure, which makes them prone to separation or peeling during use, especially when bent, which can damage them and affect their use.

[0016] Inconvenient to operate: The design is long and flexible, making it inconvenient to operate. It usually requires multiple people to work together to complete the assembly, which increases the difficulty of use.

[0017] Cutting difficulties and serious waste: After being enclosed, the remaining part is difficult to cut, and the excess part cannot be reused, resulting in material waste.

[0018] Poor heat generation and insulation performance: After the riser sleeve is formed, a deep V-groove is formed on the outer ring, which significantly reduces its heat generation and insulation effect. In addition, it is easy to leak molten iron (steel) during the pouring process, forming sand sticking, which is not conducive to subsequent cutting and remelting.

[0019] To address the numerous shortcomings of the aforementioned two types of riser sleeves in production, storage, and use, this disclosure proposes a novel riser sleeve design that can be flexibly assembled. This design achieves flexible assembly through the concave-convex structure of curved and straight plates, satisfying various specification requirements while avoiding the deficiencies of existing technologies. This improves production efficiency, reduces material waste, and enhances the product's ease of use and insulation performance. Summary of the Invention

[0020] This disclosure presents a flexibly assembled riser sleeve, specifically designed for casting processes, aiming to solve several problems existing in the production, use, and storage of current riser sleeves. This invention utilizes a "Lego-like" assembly design concept, employing a flexible combination of a small number of curved and straight plates with interlocking structures. This allows the size and shape of the riser sleeve to be adjusted according to actual needs, thereby improving its adaptability, reducing production costs and material waste, and greatly simplifying the operational complexity of the casting process.

[0021] Traditional riser sleeves are mainly divided into two categories: integrally molded riser sleeves and plate-shaped riser sleeves with V-grooves. While both types of riser sleeves meet casting requirements to some extent, they both have significant drawbacks. Integral riser sleeves, due to their fixed dimensions, require separate molds for each specification, increasing capital investment. Furthermore, their large size and difficulty in adjustment lead to high storage and transportation costs, and they lack flexibility in meeting the dimensional requirements of castings. While plate-shaped riser sleeves with V-grooves solve the problem of fixed dimensions to some extent, their manufacturing process is complex, their structure is loose, they are easily damaged during operation, and they are difficult to cut. Furthermore, splicing them may affect their thermal insulation performance.

[0022] To address the aforementioned issues, the purpose of this disclosure is to provide a novel riser sleeve design. Through a combination of concave and convex structures of curved and straight plates, the riser sleeve can adapt to various shapes and sizes. This invention not only enhances the flexibility of riser sleeve use but also offers numerous advantages in production and application, including reduced production costs, ease of operation, stable heating and insulation performance, and reduced material waste.

[0023] To achieve the above objectives, the riser sleeve provided in this disclosure includes two main components: an arc plate and a straight plate. Both components have specific concave-convex mating structures to enable free assembly and combination of the riser sleeve.

[0024] Arc plate structure

[0025] The design of the arc plate features a concave portion at one end and a convex portion at the other. This design allows multiple arc plates to overlap through their concave and convex structures, forming arc-shaped or circular structures. The concave and convex structures of the arc plates ensure smooth alignment during splicing, resulting in a stable joint structure. This design not only ensures the overall structural strength in circular splicing but also simplifies and speeds up the splicing process. By arranging multiple arc plates in a cylindrical pattern, circular riser sleeves of different diameters can be assembled to meet the circular riser requirements of castings.

[0026] Straight plate structure

[0027] Straight plates are used to splice together the straight sections of the waist-shaped riser sleeve. The straight plates also employ a structural design with a concave portion at one end and a convex portion at the other. By repeatedly overlapping multiple straight plates, straight structures can be spliced ​​together. Straight plates and curved plates can be used in combination; curved plates are used for the curved sections of the waist-shaped riser sleeve, while straight plates are used to splice together the horizontal straight sections of the waist-shaped riser sleeve, forming a waist-shaped riser sleeve that meets specific requirements.

[0028] Advantages of concave-convex structure design

[0029] The curved and straight plates disclosed herein employ a concave-convex structure for splicing, eliminating the need for any auxiliary tools. In use, simply overlap the concave portion of the curved or straight plate with the convex portion of the adjacent plate to form a secure connection. This structural design offers several advantages: First, the splicing process is simplified, significantly reducing operational difficulty, as no additional fasteners are required; second, the precise matching of the concave-convex structure enhances the stability of the splicing and the integrity of the overall structure, ensuring the stability and durability of the riser sleeve during use.

[0030] By flexibly combining arc plates and straight plates, the riser sleeve of this disclosure can be assembled into various shapes and sizes to meet the needs of different castings. For castings requiring annular risers, circular riser sleeves of different diameters can be assembled by arranging arc plates in a cylindrical pattern; for castings requiring waist-shaped risers, waist-shaped structures can be formed by combining arc plates and straight plates. In this way, the riser sleeve of this disclosure can be flexibly adjusted according to the casting size to meet the needs of various casting processes, avoiding the inconvenience caused by the fixed size of traditional riser sleeves.

[0031] This disclosure addresses the issue of decreased heat dissipation and insulation performance of V-groove riser sleeves after splicing. The seamless splicing achieved through the interlocking structure of the curved and straight plates avoids the formation of deep V-grooves, effectively maintaining the heat dissipation and insulation performance of the riser sleeve. The absence of deep V-grooves prevents leakage of molten iron or steel during casting, reduces sand adhesion to castings, and ensures smoother cutting and remelting processes for the riser sleeve.

[0032] Because the design of the arc plate and straight plate allows for the combination of a small number of specifications to create riser sleeves of various sizes, this disclosure significantly reduces mold requirements and lowers mold costs. Furthermore, the simple structure and small size of the arc plate and straight plate facilitate storage and transportation, reducing storage and logistics costs. Only a small stock of arc plates and straight plates is needed to meet diverse casting requirements, avoiding the inventory pressure caused by the multiple specifications of traditional riser sleeves, and significantly reducing the company's capital tied up.

[0033] The riser sleeve disclosed herein achieves on-demand customization through flexible splicing, avoiding material waste caused by riser sleeves that are too large or too small. Especially in the splicing of waist-shaped structures, the combination of curved plates and straight plates effectively avoids excess material. The entire use of the riser sleeve is a one-piece structure, and there will be no material separation or damage due to splicing, thereby effectively extending the service life of the product and maximizing resource utilization.

[0034] The assembly design disclosed herein allows one person to complete the assembly and disassembly of riser sleeves, greatly simplifying the workflow in the foundry and reducing manpower requirements. Since the curved and straight plates can be freely combined to form riser sleeves that meet dimensional requirements, frequent mold changes and process switching are unnecessary, making the operation more efficient and improving safety. Beneficial effects

[0035] The flexibly combinable riser sleeve disclosed herein achieves riser requirements of various sizes and shapes through a small number of curved and straight plates, greatly improving the flexibility of production organization, reducing mold and storage costs, and avoiding material waste. The overlapping structure ensures the stability and heat insulation effect after assembly, effectively preventing iron and steel leakage and simplifying the operation process. This invention has broad application prospects and significant practical value in the foundry industry, providing a highly efficient, convenient, and economical riser solution for modern casting processes. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in this disclosure or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0037] Figure 1 is a schematic diagram of the arc plate structure according to an embodiment of this disclosure;

[0038] Figure 2 is a schematic diagram of the straight plate structure according to an embodiment of this disclosure;

[0039] Figure 3 is a schematic diagram of the three-dimensional structure of the multi-diameter splicing arc plate according to an embodiment of the present disclosure;

[0040] Figure 4 is a top view of the multi-diameter splicing structure of the arc plate according to an embodiment of the present disclosure;

[0041] Figure 5 is a schematic diagram of the waist-shaped riser structure of the arc plate and straight plate splicing according to an embodiment of the present disclosure.

[0042] The markings in the diagram are: 1. Curved plate; 2. Straight plate; 1-1. Concave part of curved plate; 1-2. Protruding part of curved plate; 2-1. Concave part of straight plate; 2-2. Protruding part of straight plate. Detailed Implementation

[0043] The present disclosure will now be described in detail with reference to the accompanying drawings and specific embodiments. It should also be noted that, to make the embodiments more comprehensive, the following embodiments are the best and preferred embodiments, and those skilled in the art can use other alternative methods to implement some well-known technologies; moreover, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit the present disclosure.

[0044] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.

[0045] Generally, terms can be understood at least partly from their use in context. For example, depending at least partly on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood not necessarily to convey an exclusive set of factors, but rather, alternatively, depending at least partly on the context, to allow for the presence of other factors that are not necessarily explicitly described.

[0046] This disclosure relates to a riser sleeve that can be flexibly assembled to meet the flexible requirements of casting processes for riser size and shape. The riser sleeve mainly consists of two basic structures: an arc plate and a straight plate. Free assembly is achieved through a concave-convex fitting structure, effectively adapting to riser requirements of different shapes and sizes. The specific embodiments of this disclosure are described in detail below with reference to the accompanying drawings.

[0047] Structural design of curved plates and straight plates

[0048] Arc plate structure (Figure 1)

[0049] As shown in Figure 1, the arc plate 1 is designed to be spliced ​​to form a circular or partially circular riser structure. One end of the arc plate has a concave portion 1-1, and the other end has a convex portion 1-2. The concave and convex portions are designed to match each other, allowing multiple arc plates to overlap through the concave portion 1-1 and the convex portion 1-2 of adjacent arc plates.

[0050] This concave-convex structure design allows for a stable locking effect when the curved plates are assembled. Multiple curved plates are arranged in a cylindrical pattern to form an arc-shaped or circular riser structure, suitable for riser forming of circular castings. The concave-convex structure design of the curved plates is easy to operate, requires no additional tools, and forms a stable arc-shaped frame after assembly.

[0051] Straight plate structure (Figure 2)

[0052] As shown in Figure 2, the straight plate 2 is designed to form a flat structure so that it can be spliced ​​into a waist-shaped or other riser structure with horizontal straight sections. One end of the straight plate 2 has a concave portion 2-1, and the other end has an outward convex portion 2-2. This design allows multiple straight plates to overlap through the concave portion 2-1 and the outward convex portion 2-2 of adjacent straight plates to form a straight structure.

[0053] The structure of the straight plate is similar to that of the curved plate, but the structural part used for splicing straight lines is suitable for combining with the curved plate to form a waist-shaped riser. The concave-convex mating structure of the straight plate ensures the convenience of splicing and the stability of the structure, effectively preventing separation or loosening after splicing.

[0054] Diverse Realization of Splicing Structures

[0055] Multi-diameter arc plate splicing three-dimensional structure (Figure 3)

[0056] As shown in Figure 3, multiple arc plates can be interconnected through their concave and convex structures to form circular riser sleeves of different diameters in a cylindrical arrangement. During splicing, the concave part 1-1 of arc plate 1 is connected to the convex part 1-2 of the previous arc plate 1, and they are arranged along the circumferential direction to achieve circular structures of different diameters.

[0057] The diameter of the arc plate can be adjusted by increasing or decreasing the number of splicing blocks as needed, thus achieving various changes from small to large diameters to meet the riser size requirements of different castings. The advantage of this splicing structure is that a single specification of arc plate can be flexibly combined to form circular risers of various diameters, reducing mold and production costs.

[0058] Top view of the multi-diameter arc plate splicing structure (Figure 4)

[0059] As shown in Figure 4, multiple arc plates are displayed from a top-down perspective, showing the effect of circular riser splicing after a cylindrical arrangement. This figure illustrates the circumferential arrangement of arc plate 1, which forms a complete ring structure through continuous concave-convex overlapping.

[0060] This arrangement presents a complete and uniform circular frame when viewed from above, and the number of splices can be flexibly adjusted according to the needs of the casting, providing a variety of choices from small to large diameters. This splicing method not only ensures the stability of the structure, but also effectively maintains the heat insulation performance of the riser sleeve, avoiding the gaps or leakage problems that occur in traditional splicing methods.

[0061] Waist-shaped riser structure combining curved and straight plates (Figure 5)

[0062] As shown in Figure 5, this disclosure achieves the splicing structure of the waist-shaped riser through a combination of arc plates and straight plates. The two ends of the waist-shaped riser are formed by splicing arc plates 1, with the concave part 1-1 and the convex part 1-2 of the arc plates overlapping each other to form a complete arc-shaped frame. The two horizontal straight parts on both sides of the waist-shaped riser are formed by splicing straight plates 2, with the concave part 2-1 and the convex part 2-2 of the straight plates overlapping each other to form a flat structure.

[0063] The combination of curved and straight plates provides convenience and flexibility for the molding of waist-shaped risers. The interlocking joints between the curved and straight plates utilize a convex-concave structure to ensure a secure connection, and allow for easy disassembly and reassembly when riser dimensions need adjustment. This design effectively avoids the dimensional mismatch and leakage problems that may occur during the splicing of traditional riser sleeves, improving the heat preservation and stability of the riser sleeve during the casting process.

[0064] Example

[0065] The following are embodiments based on the specific structure of this disclosure, which describe in detail the splicing methods of risers under different conditions, in order to demonstrate the advantages of the invention in practical applications.

[0066] Example 1: Assembly of circular risers of different diameters

[0067] When casting small-diameter circular castings, four arc plates can be spliced ​​together to form a small-diameter circular riser sleeve. First, the concave portion 1-1 of one arc plate is aligned with the convex portion 1-2 of the adjacent arc plate, and the four arc plates are sequentially spliced ​​together to form a complete circular structure. Because the concave-convex structure of the arc plates ensures the stability of the splicing, a stable circular frame is formed after splicing. When a larger diameter circular riser sleeve is required, the diameter can be increased by increasing the number of arc plates; for example, six or eight arc plates can be overlapped sequentially to form a medium or large diameter circular riser.

[0068] Example 2: Assembly of waist-shaped riser sleeve

[0069] In the casting of waist-shaped castings, a waist-shaped riser structure can be formed by combining curved plates and straight plates. First, four curved plates are selected and joined sequentially using concave portions 1-1 and convex portions 1-2 to form the rounded ends of the waist-shaped riser. Then, two straight plates are overlapped using concave portions 2-1 and convex portions 2-2 to form the straight sides of the waist-shaped riser. The connection between the curved and straight plates also uses a concave-convex structure to ensure the stability of the joint. This combination method allows for adjustment of the number of curved and straight plates according to actual needs, flexibly adjusting the size of the waist-shaped riser to accommodate castings of different specifications.

[0070] Example 3: Multi-layer riser structure splicing for complex castings

[0071] In some specialized casting processes, multi-layer riser structures are required to meet the diverse casting needs. The arc-plate and straight-plate structures disclosed herein can also be used for multi-layer splicing. When constructing a multi-layer structure, a layer of circular riser sleeves can be spliced ​​first as the bottom layer, forming a small-diameter circular riser using the splicing method of Example 1. Then, another spliced ​​structure, such as a medium-diameter circular riser layer, is sequentially stacked above the bottom riser. In this way, by combining multiple arc plates, a multi-layer riser sleeve structure can be achieved, thereby meeting the casting requirements of complex castings.

[0072] The arc plate and straight plate can be made of different heat-generating and heat-insulating materials or heat-insulating materials to meet the requirements of the casting process. Heat-insulating materials such as ceramics, silicates, and plant fibers can effectively maintain the temperature of the molten metal inside the riser sleeve; heat-generating and heat-insulating materials such as those containing carbon, aluminum, and magnesium can release heat and maintain the temperature of the molten metal inside the riser sleeve. They can be selected according to the casting process requirements to meet the feeding requirements of large castings.

[0073] Technical benefits: By selecting suitable heat-generating or heat-insulating materials, the riser sleeve disclosed herein ensures that the molten metal inside the riser sleeve is heated and remains liquid for an extended period during the cooling and solidification of the casting. This fully utilizes the feeding function of the riser, improves the feeding efficiency of the riser, and increases the yield of the casting process. This design significantly improves the stability of casting quality and reduces the occurrence of casting defects.

[0074] The effects and advantages of this disclosure

[0075] In summary, this disclosure achieves the combination of riser sleeves of various shapes and sizes through the interlocking of curved and straight plates, which not only adapts to the needs of various casting processes but also effectively solves the shortcomings of existing riser sleeves in production, storage, and use. This structural design simplifies the production process, reduces mold and inventory costs, and achieves robustness through the interlocking of concave and convex plates, avoiding problems such as leakage and sand adhesion caused by traditional splicing methods. Furthermore, the splicing method of this disclosure is easy to operate, allowing one person to complete the splicing and disassembly of the riser sleeve, improving the efficiency and safety of the casting process.

[0076] This disclosure covers any alternatives, modifications, equivalent methods, and solutions made within the spirit and scope of this disclosure. To provide the public with a thorough understanding of this disclosure, specific details are described in detail in the following preferred embodiments; however, those skilled in the art will fully understand this disclosure even without these details. Furthermore, to avoid unnecessary confusion regarding the substance of this disclosure, well-known methods, processes, and procedures are not described in detail.

[0077] The above description is only a preferred embodiment of this disclosure. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principles of this disclosure, and these improvements and modifications should also be considered within the scope of protection of this disclosure.

Claims

1. A flexible splicing combinable feeder bush characterized by, Includes an arc plate (1) and a straight plate (2), wherein: One end of the arc plate (1) is provided with an inner concave part (1-1) and the other end is provided with an outer convex part (1-2), which is used for multiple arc plates (1) to overlap each other through the inner concave part (1-1) and the outer convex part (1-2) of the adjacent arc plates (1) to form a circular or waist-shaped riser structure; One end of the straight plate (2) is provided with a straight plate concave part (2-1) and the other end is provided with a straight plate convex part (2-2), so that multiple straight plates (2) can be connected to each other through the concave part (2-1) and the convex part (2-2) of the adjacent straight plates (2) to form a straight splicing structure.

2. A flexible splicing combinable feeder bushing according to claim 1, characterized in that, The arc plate (1) is arranged in a cylindrical shape to form a circular riser sleeve.

3. The flexible splicing combinable feeder bushing of claim 1, wherein, The arc plate (1) and the straight plate (2) can be combined to form a waist-shaped riser sleeve. The arc plate (1) is used to splice the arc structure, and the straight plate (2) is used to splice the straight structures on both sides of the waist-shaped riser sleeve.

4. A combinable flexible sprue bush according to any one of claims 1 to 3, characterized in that The arc plate (1) and the straight plate (2) are connected by a concave-convex structure, which makes it easy to splice and disassemble without any auxiliary fixing tools, thus reducing the difficulty of operation.

5. A combinable flexible sprue bush according to any one of claims 1 to 4, characterized in that The arc plate (1) and the straight plate (2) can be freely combined according to the size and shape requirements of the casting to form riser sleeves of various casting process requirements.

6. A combinable flexible sprue bush according to any one of claims 1 to 5, characterized in that When the riser sleeve is used in a closed manner, it does not produce a deep V-groove, thereby maintaining the heat preservation effect of the riser sleeve, avoiding iron leakage or molten steel leakage during the pouring process, reducing sand adhesion and facilitating subsequent cutting.

7. The flexibly splicable feeder sleeve according to any one of claims 1 to 6, characterized in that The arc plate (1) and the straight plate (2) are made of heat-generating and heat-insulating materials, which are matched with the casting process of the casting, and can improve the heat-generating and heat-insulating performance of the riser sleeve and improve the stability of the casting quality.

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