Mold system

Abstract

The utility model discloses a mold system, a casting cavity is arranged in the mold system, the casting cavity is used for accommodating molten metal, the mold system is also provided with a sprue channel, and the sprue channel is communicated with the casting cavity so as to supply the molten metal to the casting cavity; the mold system is further provided with a heat preservation space, and the heat preservation space is arranged on the periphery of the sprue channel so as to conduct heat preservation on molten metal. According to the utility model, the heat preservation space is arranged at the periphery of the pouring gate channel and is used for preserving heat of molten metal, so that the temperature reduction speed of the molten metal is reduced, a longer time is provided for feeding of production personnel, and the probability of product scrapping is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, and particularly relates to a mold system. Background Art

[0002] In the related art, during the casting process, the molten metal solidifies and forms in the mold cavity. However, the molten metal at the gate often solidifies in advance, and the casting cannot be compensated for shrinkage, which may cause the product to be scrapped. Summary of the Utility Model

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, the utility model provides a mold system, which reduces the temperature drop rate of the molten metal and reduces the probability of product scrapping.

[0004] According to the mold system of the embodiment of the utility model, a casting cavity is arranged in the mold system, and the casting cavity is used for accommodating the molten metal. A gate channel is further arranged on the mold system, and the gate channel communicates with the casting cavity to supply the molten metal to the casting cavity. Wherein, the mold system further comprises a heat preservation space, and the heat preservation space is arranged around the gate channel to keep the molten metal warm.

[0005] According to the mold system of the embodiment of the utility model, by arranging a heat preservation space around the gate channel and using the heat preservation space to keep the molten metal warm, the temperature drop rate of the molten metal is reduced, which provides a longer time for the production personnel to compensate for shrinkage and reduces the probability of product scrapping.

[0006] In some embodiments, the heat preservation space extends along the circumferential direction of the gate channel.

[0007] In some embodiments, the mold system comprises: a casting component, and the casting cavity is arranged in the casting component; a gate part, and the gate channel is arranged in the gate part, and the gate part is detachably arranged on the casting component.

[0008] In some embodiments, an installation channel is arranged on the casting component. The gate part comprises: a gate main body, and the gate channel is arranged in the gate main body, and the gate main body is arranged in the installation channel; a gate connecting part, and the gate connecting part is arranged on the gate main body, and the gate connecting part connects the casting component; a plurality of first protruding parts, and the first protruding parts are arranged on the outer surface of the gate main body. Adjacent two of the first protruding parts jointly define the heat preservation space, and the first protruding parts are in contact with the inner wall surface of the installation channel.

[0009] In some embodiments, the first convex portion is provided with a sealing mating surface, and the sealing mating surface is in surface contact with the inner wall of the installation channel; wherein, in the axial direction of the gate body, the size of the sealing mating surface is L1, and 9 mm ≤ L1 ≤ 11 mm; and / or, in the radial direction of the gate body, the size of the first convex portion is H1, and 1 mm ≤ H1 ≤ 3 mm.

[0010] In some embodiments, a sealing surface is provided in the installation channel, a sealing member is provided between the gate body and the sealing surface, and the sealing member is provided with an avoidance hole corresponding to the gate channel.

[0011] In some embodiments, the cross-sectional structure of the gate body is polygonal.

[0012] In some embodiments, a heat-insulating layer is provided in the heat-insulating space.

[0013] In some embodiments, the heat-insulating layer is configured as a flexible heat-insulating member, the inner wall of the heat-insulating space is provided with a second convex portion, and the surface of the second convex portion is configured as a friction surface, and the friction surface is connected to the flexible heat-insulating member to position the flexible heat-insulating member.

[0014] In some embodiments, the mold assembly includes: an outer mold; a core, the core is provided in the outer mold, the core and the outer mold jointly define the casting cavity, and the gate member is provided on the core.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and be readily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0017] Figure 1 is a cross-sectional view of the mold system in an embodiment of the present invention Figure 1 ;

[0018] Figure 2 is a cross-sectional view of the mold system in an embodiment of the present invention Figure 2 ;

[0019] Figure 3 is an external view of the gate member in an embodiment of the present invention;

[0020] Figure 4 is a cross-sectional view of the mold system in an embodiment of the present invention Figure 3 ;

[0021] Figure 5Cross-section of the mold system in the embodiment of the present utility model Figure 4 ;

[0022] Figure 6 Cross-section of the mold system in the embodiment of the present utility model Figure 5 ;

[0023] Figure 7 Bottom view of the mold system in the embodiment of the present utility model;

[0024] Figure 8 Schematic diagram of the core in the embodiment of the present utility model.

[0025] Reference numerals:

[0026] 100, mold system;

[0027] 10, gate channel; 20, heat preservation space; 21, flexible heat preservation member;

[0028] 30, casting assembly; 31, installation channel; 311, sealing surface; 33, core;

[0029] 40, gate member; 41, gate body; 42, gate connection portion; 43, first protrusion; 431, sealing mating surface. Detailed implementation manners

[0030] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for explaining the present utility model and should not be construed as limiting the present utility model.

[0031] In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

[0032] In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of such features, used to distinguish and describe features, without order or importance.

[0033] In the description of the present utility model, unless otherwise specified, the meaning of "a plurality of" is two or more than two.

[0034] In the description of the present utility model, it should be noted that, unless otherwise clearly defined and limited, the terms "installation", "connection" and "coupling" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection or an integral connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0035] The following describes the mold system 100 according to an embodiment of the present utility model with reference to the accompanying drawings.

[0036] Refer to Figure 1 , a mold system 100 according to an embodiment of the present utility model, a casting cavity is provided in the mold system 100, the casting cavity is used to accommodate molten metal, and a gate channel 10 is further provided on the mold system 100, the gate channel 10 communicates with the casting cavity to supply molten metal to the casting cavity. Wherein, the mold system 100 is further provided with a heat preservation space 20, and the heat preservation space 20 is arranged around the gate channel 10 to keep the molten metal warm.

[0037] Wherein, the molten metal flows through the gate channel 10 into the casting cavity, and the molten metal cools and solidifies in the casting cavity to form a shape.

[0038] In the related art, during the casting process, the molten metal solidifies in the cavity, but the molten metal at the gate often solidifies in advance, and the casting cannot be compensated for shrinkage, which may cause product scrapping.

[0039] Specifically, in the related art, the molten metal at the gate is in an open environment, and the mold system cannot provide a good heat preservation effect, the temperature of the molten metal drops rapidly, and the molten metal solidifies quickly.

[0040] In the embodiment of the present utility model, a heat preservation space 20 is arranged around the gate channel 10, and the heat preservation space 20 is used to specifically keep the molten metal in the gate channel 10 warm, reducing the speed of temperature drop of the molten metal. It can be understood that some defects may occur during the solidification process of the casting due to volume shrinkage, such as shrinkage cavity or porosity. In the embodiment of the present utility model, the solidification time of the molten metal is prolonged, providing a longer time for the production personnel to compensate for shrinkage, reducing the probability of product scrapping.

[0041] For example, the mold system 100 includes a casting assembly 30 and a gate member 40. The gate member 40 is detachably mounted on the casting assembly 30. The mold system 100 has a split structure, and the heat preservation space 20 is jointly defined by the gate member 40 and the casting assembly 30; alternatively, the mold system 100 includes a casting assembly 30 and a gate member 40, and the gate member 40 is integrally formed on the casting assembly 30. That is to say, the mold system 100 has an integral structure, and the heat preservation space 20 is located inside the structure.

[0042] Among them, the heat preservation space 20 can be constructed as an airtight space to increase the heat preservation effect by using the airtight space; or the heat preservation space 20 is constructed as a vacuum space to increase the heat preservation effect by using the vacuum environment; or, a flexible heat preservation member 21, such as heat preservation cotton, etc., is arranged in the heat preservation space 20 to increase the heat preservation effect.

[0043] According to the mold system 100 of the embodiment of the present invention, by arranging the heat preservation space 20 around the gate channel 10, the molten metal is heat-preserved by the heat preservation space 20, the speed of temperature drop of the molten metal is reduced, a longer time is provided for production personnel to perform feeding, and the probability of product rejection is reduced.

[0044] In some embodiments, the heat preservation space 20 extends along the circumferential direction of the gate channel 10.

[0045] Among them, the heat preservation space 20 extends along the circumferential direction of the gate channel 10, the heat preservation space 20 surrounds the gate channel 10, the heat preservation space 20 can surround 360 degrees, or can be 180 degrees, or can be 150 degrees. Of course, the heat preservation space 20 can also be other angles, and the gate channel 10 is located under the surrounding of the heat preservation space 20.

[0046] In the above solution, by arranging the heat preservation space 20 extending along the circumferential direction of the gate channel 10 and surrounding the gate channel 10, the heat preservation effect is further increased, and the speed of temperature drop of the molten metal is further reduced.

[0047] Refer to Figure 2 , in some embodiments, the mold system 100 includes: a casting assembly 30 and a gate member 40.

[0048] The casting cavity is arranged in the casting assembly 30. The gate channel 10 is arranged in the gate member 40, and the gate member 40 is detachably arranged on the casting assembly 30.

[0049] Among them, the gate member 40 is mounted on the casting assembly 30 and can be disassembled. For example, after long-term use, the gate member 40 is replaced, so that the gate member 40 damaged by the erosion of molten metal or thermal shock can be removed and replaced with a new gate member 40.

[0050] In the above solution, by providing a detachable gate member 40, a new gate member 40 can be replaced after long-term use, and the mold assembly 30 does not need to be replaced, thereby increasing the service life at a relatively low cost.

[0051] In some specific embodiments, the gate member 40 is provided with a first cavity structure, and the first cavity structure is configured as a heat preservation space 20.

[0052] In some specific embodiments, the mold assembly 30 is provided with a second cavity structure, and the second cavity structure is configured as a heat preservation space 20.

[0053] Referring to Figure 2 In some specific embodiments, the mold assembly 30 and the gate member 40 jointly define a heat preservation space 20.

[0054] Referring to Figure 3 In some embodiments, the mold assembly 30 is provided with an installation channel 31, and the gate member 40 includes: a gate main body 41, a gate connection portion 42, and a plurality of first protrusions 43.

[0055] The gate channel 10 is provided in the gate main body 41, and the gate main body 41 is provided in the installation channel 31. The gate connection portion 42 is provided on the gate main body 41, and the gate connection portion 42 is connected to the mold assembly 30. The first protrusions 43 are provided on the outer surface of the gate main body 41, and two adjacent first protrusions 43 jointly define a heat preservation space 20, and the first protrusions 43 are in contact with the inner wall of the installation channel 31.

[0056] Among them, the gate member 40 is placed in the installation channel 31, and the gate connection portion 42 is connected to the mold assembly 30, thereby fixing the gate main body 41 on the mold assembly 30. The first protrusions 43 are located between the outer surface of the gate main body 41 and the inner wall of the installation channel 31, and the heat preservation space 20 is provided between the plurality of first protrusions 43.

[0057] In the above solution, by providing the first protrusions 43 on the outer surface of the gate main body 41 and using the first protrusions 43 to define the heat preservation space 20, the overall structure is simple. After the gate member 40 is inserted into the installation channel 31, the heat preservation space 20 is automatically defined, reducing the assembly requirements.

[0058] Specifically, the gate main body 41, the first protrusions 43, and the inner wall surface of the installation channel 31 jointly define a heat preservation space 20.

[0059] In some specific embodiments, the gate connection portion 42 is connected to the mold assembly 30 by bolts, which is convenient and fast.

[0060] Referring to Figure 3, in some embodiments, the first convex portion 43 is provided with a sealing mating surface 431, and the sealing mating surface 431 is in surface contact with the inner wall surface of the installation channel 31; wherein, in the axial direction of the gate body 41, the size of the sealing mating surface 431 is L1, and 9 mm ≤ L1 ≤ 11 mm.

[0061] Wherein, the sealing mating surface 431 is in surface contact with the inner wall surface of the installation channel 31, and in the axial direction of the gate body 41, the sealing mating surface 431 has a certain width.

[0062] In the above solution, by providing the sealing mating surface 431 with a certain width to contact the inner wall of the installation channel 31, the sealing mating surface 431 fits tightly with the inner wall of the installation channel 31, improving the sealing performance of the heat preservation space 20 and facilitating assembly and grinding at the same time.

[0063] Specifically, L1 can be 9 mm; or, L1 is 10 mm; or, L1 is 11 mm.

[0064] Refer to Figure 3 , in some embodiments, the first convex portion 43 is provided with a sealing mating surface 431, and the sealing mating surface 431 is in surface contact with the inner wall surface of the installation channel 31; wherein, in the radial direction of the gate body 41, the size of the first convex portion 43 is H1, and 1 mm ≤ H1 ≤ 3 mm.

[0065] Wherein, the sealing mating surface 431 is in surface contact with the inner wall surface of the installation channel 31, and in the radial direction of the gate body 41, the first convex portion 43 has a certain thickness.

[0066] In the above solution, by providing the first convex portion 43 with a certain thickness to contact the inner wall of the installation channel 31, the heat preservation space 20 has a certain depth, thereby improving the heat preservation effect.

[0067] Specifically, H1 can be 1 mm; or, H1 is 2 mm; or, H1 is 3 mm.

[0068] Refer to Figure 3 , in some embodiments, the first convex portion 43 is provided with a sealing mating surface 431, and the sealing mating surface 431 is in surface contact with the inner wall surface of the installation channel 31; wherein, in the axial direction of the gate body 41, the size of the sealing mating surface 431 is L1, and 9 mm ≤ L1 ≤ 11 mm, and in the radial direction of the gate body 41, the size of the first convex portion 43 is H1, and 1 mm ≤ H1 ≤ 3 mm.

[0069] Among them, the sealing mating surface 431 is in surface contact with the inner wall surface of the installation channel 31. In the axial direction of the gate body 41, the sealing mating surface 431 has a certain width. The sealing mating surface 431 is in surface contact with the inner wall surface of the installation channel 31. In the radial direction of the gate body 41, the first convex portion 43 has a certain thickness.

[0070] In the above solution, by setting the sealing mating surface 431 with a certain width to contact the inner wall of the installation channel 31, the sealing mating surface 431 fits tightly with the inner wall of the installation channel 31, improving the sealing performance of the heat preservation space 20 and facilitating assembly and grinding at the same time. And by setting the first convex portion 43 with a certain thickness to contact the inner wall of the installation channel 31, the heat preservation space 20 has a certain depth, thereby improving the heat preservation effect.

[0071] Specifically, L1 can be 9 mm; or, L1 is 10 mm; or, L1 is 11 mm.

[0072] Specifically, H1 can be 1 mm; or, H1 is 2 mm; or, H1 is 3 mm.

[0073] Refer to Figure 4 , in some embodiments, a sealing surface 311 is provided in the installation channel 31, a sealing member is provided between the gate body 41 and the sealing surface 311, and the sealing member is provided with an avoidance hole corresponding to the gate channel 10.

[0074] Among them, the sealing surface 311 is arranged inside the installation channel 31, and the sealing member arranged between the sealing surface 311 and the gate body 41 seals the space between the two, preventing the molten metal from entering the space between the gate member 40 and the mold assembly 30 through the gap.

[0075] In the above solution, by setting the sealing member to seal the gap between the gate body 41 and the mold assembly 30, the molten metal is prevented from entering the space between the gate member 40 and the mold assembly 30. At the same time, by setting the sealing member, the requirements for the fit between the sealing surface 311 and the gate body 41 are reduced.

[0076] Specifically, the sealing member is refractory cotton, which is simple, practical and high-temperature resistant.

[0077] Refer to Figure 3 , in some embodiments, the cross-sectional structure of the gate body 41 is polygonal.

[0078] Among them, the polygon can be a quadrilateral, or a pentagon, or a quadrilateral with an arc-shaped corner, a pentagon with an arc-shaped corner, or other polygons.

[0079] In the above solution, by constructing the cross-section of the gate body 41 as a polygon, compared with the circular cross-section in the related art, the structure with a polygon cross-section has greater structural stiffness, plays a supporting role for the mold assembly 30, reduces the deformation influence of the mold assembly 30 when subjected to thermal and cold shocks, improves the service life, and is also beneficial to the overall assembly.

[0080] Specifically, the cross-section of the gate body 41 is in the shape of a square.

[0081] In some embodiments, a heat-insulating layer is provided in the heat-insulating space 20.

[0082] Among them, the heat-insulating layer is filled in the heat-insulating space 20. The heat-insulating layer can be a heat-insulating gas, such as an air layer or a nitrogen layer, or a heat-insulating solid, such as heat-insulating cotton, etc.

[0083] In the above solution, by providing a heat-insulating layer in the heat-insulating space 20, the heat-insulating effect is improved, the overall structure is simple and easy to implement, and the cost is reduced.

[0084] Refer to Figure 5 、 Figure 6 , in some embodiments, the heat-insulating layer is configured as a flexible heat-insulating member 21. The inner wall of the heat-insulating space 20 is provided with a second protruding portion, and the surface of the second protruding portion is configured as a friction surface. The friction surface is connected to the flexible heat-insulating member 21 to position the flexible heat-insulating member 21.

[0085] Among them, the flexible heat-insulating member 21 has a certain flexibility, so as to be suitable for being placed in various spaces. The inner wall of the heat-insulating space 20 is provided with a second protruding portion, and the friction surface on the second protruding portion contacts the flexible heat-insulating member 21 to fix the flexible heat-insulating member 21.

[0086] In the above solution, by configuring the heat-insulating layer as a flexible heat-insulating member 21, using the flexibility of the flexible heat-insulating member 21, it is thus applicable to various spaces, improving the versatility. Moreover, the inner wall of the heat-insulating space 20 is provided with a second protruding portion, and the friction surface on the second protruding portion is used to conveniently fix the flexible heat-insulating member 21. The overall structure is simple and easy to implement.

[0087] For example, the flexible heat-insulating member 21 is heat-insulating cotton, reducing the cost.

[0088] In some specific embodiments, the height of the second protruding portion is 0.5 mm, which increases the friction while avoiding interference and improves the positioning effect.

[0089] More specifically, the second protruding portion is provided on the gate body 41, and the second protruding portion extends around the circumferential direction of the gate body 41. In the axial direction of the gate body 41, the distance between different parts of the second protruding portion is 5 mm, which is convenient for positioning the flexible heat-insulating member 21.

[0090] More specifically, the second convex portion is configured as a pseudo-thread structure, facilitating the positioning of the flexible heat-insulating member 21.

[0091] Referring to Figure 6 , Figure 7 , in some embodiments, the mold assembly 30 includes: an outer mold and a core 33.

[0092] The core 33 is disposed in the outer mold. The core 33 and the outer mold jointly define a casting cavity, and the gate member 40 is disposed on the core 33.

[0093] Among them, the outer mold is the mold part that forms the external shape of the casting. It is the main mold structure of the casting, used to define the outer surface of the casting. The core 33 is the mold part used to form the internal cavity or complex internal structure of the casting. The core 33 is usually placed inside the outer mold and forms the inner surface and specific internal features of the casting by providing internal support.

[0094] In the above solution, the gate member 40 is installed on the core 33, and the core 33 is used to fix the gate member 40, with the overall structure being clear and practical.

[0095] Specifically, the material of the core 33 is metal, which can be used multiple times, reducing costs.

[0096] Referring to Figure 6 , 8 , in some specific embodiments, the installation channel 31 is disposed on the core 33. A grid rib structure is provided in the installation channel 31, and the grid rib structure is disposed below the gate member 40. By providing the grid rib structure, it facilitates the laying of refractory mortar.

[0097] Specifically, refractory mortar is an auxiliary material in the casting process, used for connection, repair, and sealing. Refractory mortar has high fire resistance and good bonding properties, and can remain stable in high-temperature environments without being easily decomposed or deformed.

[0098] In some specific embodiments, the mold system 100 is applied to the low-pressure casting process. The gate channel 10 is disposed below the casting cavity, and the molten metal fills the casting cavity under a lower pressure. Specifically, the molten metal flows from the bottom upwards into the casting cavity, with smooth filling, facilitating the sequential solidification of the casting, high dimensional accuracy of the casting, and high yield.

[0099] Other components and operations of the mold system 100 according to the embodiments of the present invention are known to those of ordinary skill in the art and will not be described in detail here.

[0100] In the description of this specification, the descriptions referring to terms such as "embodiment", "example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0101] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present utility model, and the scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A mold system, characterized in that: The mold system (100) is provided with a casting cavity, the casting cavity is used to contain molten metal, and the mold system (100) is also provided with a gate channel (10), the gate channel (10) is connected to the casting cavity to supply the molten metal to the casting cavity; wherein, The mold system (100) is also provided with a heat-insulating space (20), and the heat-insulating space (20) is arranged around the gate channel (10) to keep the molten metal warm.

2. The mold system according to claim 1, characterized in that: The heat-insulating space (20) extends along the circumferential direction of the gate channel (10).

3. The mold system according to claim 2, characterized in that: include: A casting mold assembly (30), wherein the casting cavity is arranged in the casting mold assembly (30); A gate member (40), the gate channel (10) is arranged on the gate member (40), and the gate member (40) is detachably arranged on the casting component (30).

4. The mold system according to claim 3, characterized in that: The mold assembly (30) is provided with a mounting channel (31), and the gate member (40) comprises: A gate body (41), the gate channel (10) is arranged on the gate body (41), and the gate body (41) is arranged in the installation channel (31); A gate connection part (42), wherein the gate connection part (42) is arranged on the gate body (41), and the gate connection part (42) is connected to the casting mold component (30); A plurality of first protrusions (43), wherein the first protrusions (43) are arranged on the outer surface of the gate body (41), two adjacent first protrusions (43) jointly define the heat-insulating space (20), and the first protrusions (43) are in contact with the inner wall surface of the installation channel (31).

5. The mold system according to claim 4, characterized in that: The first protrusion (43) is provided with a sealing mating surface (431), and the sealing mating surface (431) is in surface contact with the inner wall of the installation channel (31); wherein, In the axial direction of the gate body (41), the size of the sealing mating surface (431) is L1, 9mm≤L1≤11mm; and / or, in the radial direction of the gate body (41), the size of the first protrusion (43) is H1, 1mm≤H1≤3mm.

6. The mold system according to claim 4, characterized in that: A sealing surface is provided in the installation channel (31), a sealing member (312) is provided between the gate body (41) and the sealing surface, and the sealing member (312) is provided with an avoidance hole corresponding to the gate channel (10).

7. The mold system according to claim 4, characterized in that: The cross-section of the gate body (41) is polygonal.

8. The mold system according to any one of claims 1 to 7, characterized in that: A heat-insulating layer is provided in the heat-insulating space (20).

9. The mold system according to claim 8, characterized in that: The thermal insulation layer is constructed as a flexible thermal insulation component (21), the inner wall of the thermal insulation space (20) is provided with a second protrusion, the surface of the second protrusion is constructed as a friction surface, and the friction surface is connected to the flexible thermal insulation component (21) to position the flexible thermal insulation component (21).

10. The mold system according to claim 3, characterized in that: The casting mold assembly (30) comprises: External mold; A core (33), the core (33) is arranged on the outer mold, the core (33) and the outer mold together define the casting cavity, and the gate piece (40) is arranged on the core (33).

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