A riser plate and riser sleeve

Abstract

This utility model relates to the field of casting technology and discloses a riser plate and a riser sleeve. The riser plate includes a riser plate body, and a first outward protrusion and a second outward protrusion are respectively provided at both ends of the riser plate body along its extension direction. The first outward protrusion and the second outward protrusion are respectively provided at both ends of the riser plate body along the axial direction of the riser sleeve; or the first outward protrusion and the second outward protrusion are provided at the same end of the riser plate body along the axial direction of the riser sleeve. A first concave portion is formed between the first outward protrusion and the riser plate body, and a second concave portion is formed between the second outward protrusion and the riser plate body. The first outward protrusion on one of two adjacent riser plates can be inserted and engaged with the first or second concave portion on the other riser plate; the second outward protrusion on one of two adjacent riser plates can be inserted and engaged with the first or second concave portion on the other riser plate, thereby limiting the position of the riser plate.

Description

Technical Field

[0001] This utility model relates to the field of casting technology, and in particular to a riser plate and a riser sleeve. Background Technology

[0002] In the foundry industry, risers are a core component of the casting process. Their main function is to compensate for volume shrinkage during metal solidification, preventing typical defects such as shrinkage cavities and porosity in castings. Especially for large, high-quality castings, the hot-feeding performance of risers directly determines the internal quality and mechanical properties of the final casting.

[0003] In the existing technology, in order to meet the feeding requirements, the riser sleeve is formed by splicing multiple riser plates to form a ring structure. Currently, the two adjacent riser plates of the riser sleeve are interlocked. After the riser sleeve is assembled, an additional fixing device is needed to lock each riser plate synchronously in the vertical and horizontal directions, which makes the operation more complicated and reduces production efficiency. Utility Model Content

[0004] The purpose of this utility model is to propose a riser plate and riser sleeve, which solves the technical problem that in the prior art, after the riser sleeve is assembled, an additional fixing device is needed to lock each riser plate synchronously in the up and down and left and right directions, which makes the operation more complicated and reduces production efficiency.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] This utility model provides a riser plate, and multiple riser plates can be assembled to form an annular riser sleeve. The riser plate includes a riser plate body, and a first outward protrusion and a second outward protrusion are respectively provided at both ends of the riser plate body along its extension direction. The first outward protrusion and the second outward protrusion are respectively provided at both ends of the riser plate body along the axial direction of the riser sleeve; or the first outward protrusion and the second outward protrusion are provided at the same end of the riser plate body along the axial direction of the riser sleeve.

[0007] A first concave portion is formed between the first protruding portion and the riser plate body, and a second concave portion is formed between the second protruding portion and the riser plate body. The first protruding portion on one of two adjacent riser plates can be inserted into the first concave portion or the second concave portion on the other riser plate. The second protruding portion on one of two adjacent riser plates can be inserted into the first concave portion or the second concave portion on the other riser plate.

[0008] The riser plate includes a riser plate body, with a first outward protrusion and a second outward protrusion respectively provided at both ends of the riser plate body along its extension direction. The first outward protrusion and the second outward protrusion are respectively provided at both ends of the riser plate body along the axis of the riser sleeve; or the first outward protrusion and the second outward protrusion are provided at the same end of the riser plate body along the axis of the riser sleeve. A first concave portion is formed between the first outward protrusion and the riser plate body, and a second concave portion is formed between the second outward protrusion and the riser plate body. The first outward protrusion on one of two adjacent riser plates can be inserted and engaged with the first or second concave portion on the other riser plate, and the second outward protrusion on one of two adjacent riser plates can be inserted and engaged with the first or second concave portion on the other riser plate. This allows each riser plate of the riser sleeve to be limited in both the circumferential and axial directions. The plug-and-play installation method does not require external fixing tools for locking, making operation more convenient and improving production efficiency.

[0009] As a preferred embodiment of the riser plate, the first outward protrusion and the second outward protrusion are respectively disposed at both ends of the riser plate body along the axial direction of the riser sleeve, and multiple riser plates are arranged in sequence and inserted into each other;

[0010] The first and second protruding portions are located at the same end of the riser plate body along the axial direction of the riser sleeve. Adjacent riser plates are inverted and interlocked.

[0011] Both types of riser plates can be assembled to form an annular riser sleeve.

[0012] As a preferred embodiment of the riser plate, the first convex portion and the first concave portion of the riser plate have equal dimensions along the axial direction of the riser sleeve, and are both equal to half the dimension of the riser plate body along the axial direction of the riser sleeve; the second convex portion and the second concave portion of the riser plate have equal dimensions along the axial direction of the riser sleeve, and are both equal to half the dimension of the riser plate body along the axial direction of the riser sleeve.

[0013] The above configuration ensures that the end faces of the two riser plates that are inserted into each other are flush along the axial direction of the riser sleeve.

[0014] As a preferred embodiment of the riser plate, the first and second outward protrusions of the riser plate have equal dimensions along the extending direction of the riser plate.

[0015] The above configuration allows the first protruding part to be fully inserted into the second concave part along the circumferential direction of the riser sleeve; and allows the second protruding part to be fully inserted into the first concave part along the circumferential direction of the riser sleeve.

[0016] As a preferred embodiment of the riser plate, the arc lengths of the first and second convex portions along the extension direction of the riser plate are L, where 0 < L ≤ 100 mm.

[0017] The above design reduces the risk of breakage due to excessive length of the first and second protrusions, and ensures the strength of the assembled riser sleeve.

[0018] As a preferred embodiment of the riser plate, the first outward protrusion and the first inward concave portion at one end of the riser plate body form a first limiting portion, and the second outward protrusion and the second inward concave portion at the other end of the riser plate body form a second limiting portion. A limiting groove is provided on one of the end faces of the first limiting portion and the second limiting portion along the extension direction of the riser plate, and a limiting protrusion is provided on the other end face. The limiting grooves and limiting protrusions of two adjacent riser plates are inserted into each other.

[0019] Alternatively, the first convex portion and the second convex portion form an convex group, and the first concave portion and the second concave portion form a concave group. The limiting groove is provided on one of the convex group and the concave group, and the limiting protrusion is provided on the other. The limiting groove and the limiting protrusion of two adjacent riser plates are inserted and engaged.

[0020] The interlocking fit between the limiting groove and the limiting protrusion allows the assembled riser plate to maintain a certain degree of bending adaptability in the direction perpendicular to the riser plate, thereby improving the riser plate's ability to fit irregular mold surfaces.

[0021] As a preferred embodiment of the riser plate, the horizontal cross-section of the limiting protrusion is an arc-shaped structure, and the side of the arc-shaped structure facing away from the riser plate body is an arc-shaped structure; the shape of the limiting groove is adapted to the shape of the limiting protrusion.

[0022] The above configuration ensures that the two adjacent riser plates provide moderate flexibility in the front-to-back direction while maintaining a locking effect, allowing the assembled riser sleeve to fit the mold surface contour more precisely.

[0023] As a preferred embodiment of the riser plate mentioned above, the riser plate is an arc-shaped plate or a straight plate, and multiple arc-shaped plates are assembled to form a circular riser sleeve;

[0024] Alternatively, multiple curved plates and multiple straight plates can be assembled to form a racetrack-shaped riser sleeve.

[0025] As a preferred embodiment of the riser plate, the central angle corresponding to the arc-shaped plate is 45°-120°.

[0026] The central angle corresponding to the arc plate is 45°-120°, and multiple riser plates can be assembled to form ring structures of different sizes.

[0027] This utility model also provides a riser sleeve, which includes multiple riser plates as described above, and the multiple riser plates are assembled to form an annular riser sleeve.

[0028] The above-mentioned multiple riser plates are assembled to form an annular riser sleeve. This riser sleeve is plug-and-play and can limit the position of each riser plate along the circumference and axial direction of the riser sleeve without the need for external tools to fix it.

[0029] The beneficial effects of this utility model are:

[0030] The riser plate proposed in this utility model comprises multiple riser plates assembled to form an annular riser sleeve. The riser plate includes a riser plate body, with a first outward protrusion and a second outward protrusion respectively provided at both ends of the riser plate body along its extension direction. The first and second outward protrusions are respectively located at both ends of the riser plate body along the axial direction of the riser sleeve; or the first and second outward protrusions are located at the same end of the riser plate body along the axial direction of the riser sleeve. A first concave portion is formed between the first outward protrusion and the riser plate body, and a second outward protrusion is formed between the second outward protrusion and the riser plate body. A second concave portion is formed between the two riser plates. The first outward protrusion on one of the two adjacent riser plates can be inserted into the first or second concave portion on the other riser plate. The second outward protrusion on one of the two adjacent riser plates can be inserted into the first or second concave portion on the other riser plate. This allows each riser plate of the riser sleeve to be limited in both the circumferential and axial directions. The plug-and-play installation method does not require external fixing tools for locking, making operation more convenient and improving production efficiency.

[0031] The riser sleeve proposed in this utility model is formed by assembling multiple riser plates to form an annular riser sleeve. This riser sleeve is plug-and-play and can limit the position of each riser plate along the circumference and axial direction of the riser sleeve without the need for external tools to assist in fixing, making it relatively convenient to operate. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the riser plate provided in Embodiment 1 of this utility model;

[0033] Figure 2 This is a schematic diagram of the riser sleeve provided in Embodiment 1 of this utility model;

[0034] Figure 3 This is a schematic diagram of the riser plate provided in Embodiment 2 of this utility model;

[0035] Figure 4 This is a schematic diagram of the riser sleeve provided in Embodiment 2 of this utility model.

[0036] In the figure: 100. riser plate; 1. riser plate body; 2. first outer convex part; 3. second outer convex part; 4. first inner concave part; 5. second inner concave part; 6. limit groove; 7. limit protrusion. Detailed Implementation

[0037] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0038] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0039] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0040] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0041] Example 1:

[0042] like Figure 1 As shown, this embodiment provides a riser plate 100, and multiple riser plates 100 can be assembled to form an annular riser sleeve (see...). Figure 2 The riser plate 100 includes a riser plate body 1, the riser plate body 1 extending along its extension direction ( Figure 1 The riser plate body 1 has a first outward protrusion 2 and a second outward protrusion 3 respectively provided at both ends in the X direction. The first outward protrusion 2 and the second outward protrusion 3 are respectively provided in the direction along the axis of the riser sleeve. Figure 1 The riser plate 100 is located at both ends in the Y direction (also the height direction of the riser plate 100); a first concave portion 4 is formed between the first protrusion 2 and the riser plate body 1, and a second concave portion 5 is formed between the second protrusion 3 and the riser plate body 1. The first protrusion 2 on one of the two adjacent riser plates 100 can be inserted into the second concave portion 5 on the other riser plate 100; the second protrusion 3 on one of the two adjacent riser plates 100 can be inserted into the first concave portion 4 on the other riser plate 100 (i.e., forming a mortise and tenon structure). This allows each riser plate 100 of the riser sleeve to be limited in both the vertical and horizontal directions, thus achieving multi-directional locking of the riser plate 100. This plug-and-play installation method does not require external fixing tools for locking and is relatively convenient to operate.

[0043] Optionally, the first convex portion 2 and the first concave portion 4 of the riser plate 100 have equal dimensions along the axial direction of the riser sleeve, and are both equal to half the dimension of the riser plate body 1 along the axial direction of the riser sleeve; the second convex portion 3 and the second concave portion 5 of the riser plate 100 have equal dimensions along the axial direction of the riser sleeve, and are both equal to half the dimension of the riser plate body 1 along the axial direction of the riser sleeve. This arrangement ensures that the end faces of the two mating riser plates 100 are flush along the axial direction of the riser sleeve.

[0044] Optionally, the first outward protrusion 2 and the second outward protrusion 3 of the riser plate 100 have equal dimensions along the extending direction of the riser plate 100, so that the first outward protrusion 2 can be fully inserted into the second inner recess 5 along the circumferential direction of the riser sleeve; and the second outward protrusion 3 can be fully inserted into the first inner recess 4 along the circumferential direction of the riser sleeve.

[0045] The first convex portion 2 and the first concave portion 4 of the riser plate 100 have equal dimensions along the axial direction of the riser sleeve, and are both equal to half the dimension of the riser plate body 1 along the axial direction of the riser sleeve; the second convex portion 3 and the second concave portion 5 of the riser plate 100 have equal dimensions along the axial direction of the riser sleeve, and are both equal to half the dimension of the riser plate body 1 along the axial direction of the riser sleeve; and the first convex portion 2 and the second convex portion 3 of the riser plate 100 have equal dimensions along the extending direction of the riser plate 100. The above arrangement can ensure that the joint size of the two riser plates 100 is minimized, and achieve efficient sealing.

[0046] Optionally, the arc length of the first protrusion 2 and the second protrusion 3 along the extending direction of the riser plate 100 is L, where 0 < L ≤ 100 mm. This arrangement reduces the risk of breakage due to excessive length of the first protrusion 2 and the second protrusion 3, and ensures the strength of the assembled riser sleeve. For example... Figure 1 The arc length L of the second external protrusion 3 along the extension direction of the riser plate 100 is shown. L can be 10mm, 20mm, 30mm, 40mm, 50mm, 60mm, 70mm, 80mm, 90mm, 100mm, etc.

[0047] The first outward protrusion 2 and the first inward concave portion 4 at one end of the riser plate body 1 form a first limiting portion, and the second outward protrusion 3 and the second inward concave portion 5 at the other end of the riser plate body 1 form a second limiting portion. A limiting groove 6 is provided on one end face of the first limiting portion and the second limiting portion along the extension direction of the riser plate 100, and a limiting protrusion 7 is provided on the other end face. The limiting groove 6 and the limiting protrusion 7 of two adjacent riser plates 100 are interlocked. The interlocking of the limiting groove 6 and the limiting protrusion 7 allows the assembled riser plate 100 to maintain a certain bending adaptability in the direction perpendicular to the riser plate 100, improving the fit of the riser plate 100 to irregular mold surfaces; it can also significantly reduce the risk of molten metal leakage and save on the cost of post-processing of castings.

[0048] In this embodiment, the horizontal cross-section of the limiting protrusion 7 is an arc-shaped structure, and the side of the arc-shaped structure facing away from the riser plate body 1 is an arc-shaped structure; the shape of the limiting groove 6 is adapted to the shape of the limiting protrusion 7. The above arrangement enables the two adjacent riser plates 100 to provide appropriate flexibility in the front-to-back direction while ensuring the locking effect, so that the assembled riser sleeve can more accurately fit the mold surface contour.

[0049] Optionally, the bow height of the limiting protrusion 7 is d, where 0 ≤ d ≤ 15 mm. This setting avoids the situation where the strength is too low due to an excessively large bow height. d can be 0 mm, 1 mm, 3 mm, 5 mm, 8 mm, 10 mm, 13 mm, 15 mm, etc. It should be noted that when d is 0 mm, the limiting protrusion 7 is not set.

[0050] In other embodiments, the limiting protrusion 7 is not limited to an arc-shaped structure, but can also be other shapes that allow the assembled riser plate 100 to maintain bending adaptability in a direction perpendicular to the riser plate 100 (the front-back direction of the riser plate 100).

[0051] Optionally, the riser plate 100 is an arc-shaped plate or a straight plate, and multiple arc-shaped plates are assembled to form a circular riser sleeve (see...). Figure 2 Alternatively, multiple curved plates and multiple straight plates can be assembled to form a racetrack-shaped riser sleeve (not shown in the figure).

[0052] Optionally, the central angle of the curved plate is 45°-120°, and multiple riser plates can be assembled to form ring structures of different sizes. The central angle of the straight plate is 0°.

[0053] The curved panels can be configured with central angles of 45°, 60°, 90°, or 120°. These angles allow for the creation of standard modules with varying angles, facilitating assembly and use to meet diverse application needs.

[0054] When the central angle corresponding to the arc-shaped plate is 45°, a circular riser sleeve is formed by assembling 8 riser plates 100. When the central angle corresponding to the arc-shaped plate is 60°, a circular riser sleeve is formed by assembling 6 riser plates 100. When the central angle corresponding to the arc-shaped plate is 90°, a circular riser sleeve is formed by assembling 4 riser plates 100. When the central angle corresponding to the arc-shaped plate is 120°, a circular riser sleeve is formed by assembling 3 riser plates 100.

[0055] Of course, a racetrack-shaped structure can also be assembled by combining curved plates and straight plates. For example, a racetrack-shaped riser sleeve can be formed by splicing straight plates and curved plates with a central angle of 45°.

[0056] The riser plate 100 is designed as a standard module. Operators can select an appropriate number of standard modules to combine and assemble according to the size requirements of the casting, without the need for on-site cutting, which significantly improves the adaptability and flexibility of the production line.

[0057] The standard modules use a special connection structure (the fit between the convex and concave parts) to ensure a tight fit at the joints, minimizing the number and width of seams and effectively reducing the risk of molten metal leakage.

[0058] Optionally, the riser plate 100 is made of insulating material and is prepared using a vacuum suction molding process. The specific preparation process is as follows:

[0059] Material preparation and slurry preparation:

[0060] Prepare raw materials with good air permeability, high temperature resistance, and appropriate mechanical strength. For example, you can use 30% aluminum ash, 30% cenospheres, 15% alumina, 10% quartz sand, 10% aluminum silicate fiber, and 5% resin as raw materials.

[0061] Mix the materials with water in a specific ratio to form a slurry with a solid content of 20%-37%, ensuring uniformity.

[0062] Mold forming:

[0063] The slurry is immersed in a specially designed mold, and the slurry is adsorbed and shaped using negative pressure technology to ensure that the thickness and density of the board are consistent.

[0064] After raising the mold, use a roller brush to smooth the surface of the board.

[0065] Carefully demold to avoid deformation or breakage.

[0066] Dry at 150℃-200℃ for 2-3 hours.

[0067] Assembly and installation:

[0068] Select appropriate sizes and quantities of riser plates 100 according to the casting requirements, and assemble them using mortise and tenon joints, following the principles below:

[0069] 1. Based on the casting process design, select a standard module with a suitable central angle (45° / 60° / 90° / 120°);

[0070] 2. Assemble the parts in a clockwise direction, ensuring that each mortise and tenon joint is fully engaged.

[0071] Actual operation and follow-up processing:

[0072] During the casting process, the new type of heat-insulating riser plate 100 is assembled into a riser sleeve of appropriate size at the location specified in the process.

[0073] Due to the excellent properties of riser plate 100 material, effective feeding is ensured during the solidification process of molten metal.

[0074] After casting is completed, post-treatment such as sand removal and grinding is carried out on the casting.

[0075] The riser plate 100 is prepared through the above steps, which meets the special requirements of large castings and significantly improves production efficiency and product quality.

[0076] To achieve optimal heat compensation performance, the riser plate 100 in this application must meet the following material property requirements:

[0077] • Breathability: >30D;

[0078] • Compressive strength: >1.5MPa;

[0079] Thermal conductivity: <0.3 W / (m·K);

[0080] • Refractoriness: >1400℃;

[0081] • Bulk density: 0.6 g / cm³ 3 -0.9g / cm 3 .

[0082] This utility model also provides a riser sleeve, which includes the above-mentioned multiple riser plates 100, and the multiple riser plates 100 are assembled to form an annular riser sleeve.

[0083] The above-mentioned multiple riser plates 100 are assembled to form an annular riser sleeve. This riser sleeve is plug-and-play and can limit the position of each riser plate 100 along the circumference and axial direction of the riser sleeve without the need for external tools to assist in fixing.

[0084] Example 2:

[0085] like Figure 3 As shown, this embodiment provides a riser plate 100, and multiple riser plates 100 can be assembled to form an annular riser sleeve (see...). Figure 4 The riser plate 100 includes a riser plate body 1, the riser plate body 1 extending along its extension direction ( Figure 3 The riser plate body 1 has a first outward protrusion 2 and a second outward protrusion 3 respectively provided at both ends in the X direction. The first outward protrusion 2 and the second outward protrusion 3 are provided in the direction along the axis of the riser sleeve. Figure 3 The same end of the riser plate 100 (in the Y direction, which is also the height direction of the riser plate 100); the first external protrusion 2 forms a first internal concave portion 4 between the riser plate body 1 and the second external protrusion 3 forms a second internal concave portion 5 between the riser plate body 1 and the riser plate body 1. The first external protrusion 2 on one of the two adjacent riser plates 100 can be inserted and engaged with the first internal concave portion 4 on the other riser plate 100; the second external protrusion 3 on one of the two adjacent riser plates 100 can be inserted and engaged with the second internal concave portion 5 on the other riser plate 100 (i.e., forming a mortise and tenon structure), so that each riser plate 100 of the riser sleeve can be limited in the vertical and horizontal directions, that is, the riser plate 100 can be locked in multiple directions. The installation method is plug-and-play, and no external fixing tools are required for locking, which is more convenient to operate.

[0086] Optionally, the first convex portion 2 and the first concave portion 4 of the riser plate 100 have equal dimensions along the axial direction of the riser sleeve, and are both equal to half the dimension of the riser plate body 1 along the axial direction of the riser sleeve; the second convex portion 3 and the second concave portion 5 of the riser plate 100 have equal dimensions along the axial direction of the riser sleeve, and are both equal to half the dimension of the riser plate body 1 along the axial direction of the riser sleeve. This arrangement ensures that the end faces of the two mating riser plates 100 are flush along the axial direction of the riser sleeve.

[0087] Optionally, the first outward protrusion 2 and the second outward protrusion 3 of the riser plate 100 have equal dimensions along the extending direction of the riser plate 100, so that the first outward protrusion 2 can be fully inserted into the second inner recess 5 along the circumferential direction of the riser sleeve; and the second outward protrusion 3 can be fully inserted into the first inner recess 4 along the circumferential direction of the riser sleeve.

[0088] The first convex portion 2 and the first concave portion 4 of the riser plate 100 have equal dimensions along the axial direction of the riser sleeve, and are both equal to half the dimension of the riser plate body 1 along the axial direction of the riser sleeve; the second convex portion 3 and the second concave portion 5 of the riser plate 100 have equal dimensions along the axial direction of the riser sleeve, and are both equal to half the dimension of the riser plate body 1 along the axial direction of the riser sleeve; and the first convex portion 2 and the second convex portion 3 of the riser plate 100 have equal dimensions along the extending direction of the riser plate 100. The above arrangement can ensure that the joint size of the two riser plates 100 is minimized, and achieve efficient sealing.

[0089] Optionally, the arc length of the first protrusion 2 and the second protrusion 3 along the extending direction of the riser plate 100 is L, where 0 < L ≤ 100 mm. This arrangement reduces the risk of breakage due to excessive length of the first protrusion 2 and the second protrusion 3, and ensures the strength of the assembled riser sleeve. For example... Figure 3 The arc length L of the second external protrusion 3 along the extension direction of the riser plate 100 is shown. L can be 10mm, 20mm, 30mm, 40mm, 50mm, 60mm, 70mm, 80mm, 90mm, 100mm, etc.

[0090] Optionally, the first outward protrusion 2 and the second outward protrusion 3 form an outward protrusion group, and the first inward concave portion 4 and the second inward concave portion 5 form an inward concave group. A limiting groove 6 is provided on one of the outward protrusion group and the inward concave group, and a limiting protrusion 7 is provided on the other. The limiting groove 6 of two adjacent riser plates 100 is inserted into the limiting protrusion 7. In this embodiment, the ends of the first outward protrusion 2 and the second outward protrusion 3 are provided with limiting grooves 6, and the end faces of the first inward concave portion 4 and the second inward concave portion 5 are provided with limiting protrusions 7. The limiting groove 6 of two adjacent riser plates 100 is inserted into the limiting protrusion 7. The insertion and engagement of the limiting groove 6 and the limiting protrusion 7 allows the assembled riser plate 100 to maintain a certain degree of bending adaptability in the direction perpendicular to the riser plate 100, improving the riser plate 100's ability to conform to irregular mold surfaces; moreover, it can significantly reduce the risk of molten metal leakage and save on the cost of post-casting processing.

[0091] In this embodiment, the horizontal cross-section of the limiting protrusion 7 is an arc-shaped structure, and the side of the arc-shaped structure facing away from the riser plate body 1 is an arc-shaped structure; the shape of the limiting groove 6 is adapted to the shape of the limiting protrusion 7. The above arrangement enables the two adjacent riser plates 100 to provide appropriate flexibility in the front-to-back direction while ensuring the locking effect, so that the assembled riser sleeve can more accurately fit the mold surface contour.

[0092] Optionally, the bow height of the limiting protrusion 7 is d, where 0 ≤ d ≤ 15 mm. This setting avoids the situation where the strength is too low due to an excessively large bow height. d can be 0 mm, 1 mm, 3 mm, 5 mm, 8 mm, 10 mm, 13 mm, 15 mm, etc. It should be noted that when d is 0 mm, the limiting protrusion 7 is not set.

[0093] In other embodiments, the limiting protrusion 7 is not limited to an arc-shaped structure, but can also be other shapes that allow the assembled riser plate 100 to maintain bending adaptability in a direction perpendicular to the riser plate 100 (the front-back direction of the riser plate 100).

[0094] Optionally, the riser plate 100 is an arc-shaped plate or a straight plate, and multiple arc-shaped plates are assembled to form a circular riser sleeve (see...). Figure 4 Alternatively, multiple curved plates and multiple straight plates can be assembled to form a racetrack-shaped riser sleeve (not shown in the figure).

[0095] Optionally, the central angle of the curved plate is 45°-120°, and multiple riser plates can be assembled to form ring structures of different sizes. The central angle of the straight plate is 0°.

[0096] The curved panels can be configured with central angles of 45°, 60°, 90°, or 120°. These angles allow for the creation of standard modules with varying angles, facilitating assembly and use to meet diverse application needs.

[0097] When the central angle corresponding to the arc-shaped plate is 45°, a circular riser sleeve is formed by assembling 8 riser plates 100. When the central angle corresponding to the arc-shaped plate is 60°, a circular riser sleeve is formed by assembling 6 riser plates 100. When the central angle corresponding to the arc-shaped plate is 90°, a circular riser sleeve is formed by assembling 4 riser plates 100. When the central angle corresponding to the arc-shaped plate is 120°, a circular riser sleeve is formed by assembling 3 riser plates 100.

[0098] Of course, a racetrack-shaped structure can also be assembled by combining curved plates and straight plates. For example, a racetrack-shaped riser sleeve can be formed by splicing straight plates and curved plates with a central angle of 45°.

[0099] It should be noted that the preparation method of riser plate 100 is the same as that of riser plate in Example 1, and will not be repeated here.

[0100] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A riser plate, characterized in that Multiple riser plates (100) can be assembled to form an annular riser sleeve. The riser plate (100) includes a riser plate body (1). The riser plate body (1) has a first outward protrusion (2) and a second outward protrusion (3) respectively provided at both ends along its extension direction. The first outward protrusion (2) and the second outward protrusion (3) are respectively provided at both ends of the riser plate body (1) along the axial direction of the riser sleeve; or the first outward protrusion (2) and the second outward protrusion (3) are provided at the same end of the riser plate body (1) along the axial direction of the riser sleeve. A first concave portion (4) is formed between the first protruding portion (2) and the riser plate body (1), and a second concave portion (5) is formed between the second protruding portion (3) and the riser plate body (1). The first protruding portion (2) on one of the two adjacent riser plates (100) can be inserted into the first concave portion (4) or the second concave portion (5) on the other riser plate (100). The second protruding portion (3) on one of the two adjacent riser plates (100) can be inserted into the first concave portion (4) or the second concave portion (5) on the other riser plate (100).

2. The riser plate of claim 1, wherein The first protrusion (2) and the second protrusion (3) are respectively disposed at both ends of the riser plate body (1) along the axial direction of the riser sleeve, and multiple riser plates (100) are arranged in sequence and inserted into each other; The first protrusion (2) and the second protrusion (3) are disposed at the same end of the riser plate body (1) along the axial direction of the riser sleeve. Two adjacent riser plates (100) are inverted and interlocked.

3. The riser plate of claim 1, wherein The first convex portion (2) and the first concave portion (4) of the riser plate (100) have the same dimensions along the axial direction of the riser sleeve, and are both equal to half the dimension of the riser plate body (1) along the axial direction of the riser sleeve. The second convex portion (3) and the second concave portion (5) of the riser plate (100) have equal dimensions along the axial direction of the riser sleeve, and are both equal to half the dimension of the riser plate body (1) along the axial direction of the riser sleeve.

4. The riser plate of claim 1, wherein The first convex portion (2) and the second convex portion (3) of the riser plate (100) have the same dimensions along the extending direction of the riser plate (100).

5. The riser plate of claim 3, wherein The arc length of the first convex portion (2) and the second convex portion (3) along the extension direction of the riser plate (100) is L, where 0 < L ≤ 100 mm.

6. The riser plate of claim 1, wherein The first convex portion (2) and the first concave portion (4) at one end of the riser plate body (1) form a first limiting portion, and the second convex portion (3) and the second concave portion (5) at the other end of the riser plate body (1) form a second limiting portion. A limiting groove (6) is provided on one end face of the first limiting portion and the second limiting portion along the extension direction of the riser plate (100), and a limiting protrusion (7) is provided on the other end face. The limiting groove (6) of two adjacent riser plates (100) are inserted into the limiting protrusion (7). Alternatively, the first convex portion (2) and the second convex portion (3) form an convex group, and the first concave portion (4) and the second concave portion (5) form a concave group. The limiting groove (6) is provided on one of the convex group and the concave group, and the limiting protrusion (7) is provided on the other. The limiting groove (6) of two adjacent riser plates (100) is inserted into the limiting protrusion (7).

7. The riser plate of claim 6, wherein The horizontal cross-section of the limiting protrusion (7) is an arc-shaped structure, and the side of the arc-shaped structure away from the riser plate body (1) is an arc-shaped structure; the shape of the limiting groove (6) is adapted to the shape of the limiting protrusion (7).

8. The riser plate of any one of claims 1-7, wherein, The riser plate (100) is an arc-shaped plate or a straight plate, and multiple arc-shaped plates are assembled to form a circular riser sleeve; Alternatively, multiple curved plates and multiple straight plates can be assembled to form a racetrack-shaped riser sleeve.

9. The riser plate according to claim 8, characterized in that, The central angle corresponding to the arc-shaped plate is 45°-120°.

10. A riser sleeve, characterized in that, The riser includes a plurality of riser plates (100) as described in any one of claims 1-9, and the plurality of riser plates (100) are assembled to form an annular riser sleeve.

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