A large cast iron mold coated sand casting mold

Abstract

The utility model discloses a kind of large castings iron type sand-coated casting mould, belong to casting mould technical field, including iron type main body, the bottom of iron type main body is equipped with bottom die, the top of iron type main body is equipped with top die, the inside of bottom die is equipped with slag collecting bag, the inside of iron type main body is equipped with iron type sand-coated sand core, first through pipe and second through pipe are installed on the bottom die, a plurality of heat dissipation blocks are installed on the iron type main body, a plurality of through grooves are respectively arranged on the first through pipe and the second through pipe;The utility model sets up iron type main body and heat dissipation block, through a plurality of heat dissipation blocks on iron type main body, increase the heat dissipation area of heat, it is convenient to absorption and dispersion when casting the heat generated, simultaneously, the inner cavity of heat dissipation block will be injected with corresponding coolant in advance, to further facilitate absorption when casting the heat generated, guarantee the cooling effect of casting, avoid casting to produce air hole, shrinkage cavity shrinkage and other defects, guarantee the yield of casting.

Description

Technical Field

[0001] This utility model belongs to the field of casting mold technology, specifically relating to a sand-coated casting mold for large casting iron molds. Background Technology

[0002] With the increasing size and weight of wind turbine units, ensuring the safety requirements of structural components has placed immense pressure on the production and manufacturing of structural castings. The casting and quality control of large wind turbine structural components are crucial aspects requiring special attention. In actual casting, these large castings mostly employ iron mold sand casting technology. For example, the main shaft of a wind turbine generator is a key component connecting the rotor and the motor, bearing the weight and torque of the rotor. Its quality directly determines the stability and reliability of the wind turbine generator system. In actual casting, corresponding iron mold sand casting molds are used.

[0003] However, in actual operation, the traditional spindle iron mold sand casting mold is relatively large because the spindle is a large casting and the mold is also relatively large. As a result, the heat generated during casting can easily spread from the sprue to more parts of the casting, which will affect the cooling effect of the casting. This can easily lead to defects such as porosity, shrinkage cavities and porosity in the casting, thus affecting the yield of the casting. Utility Model Content

[0004] The purpose of this utility model is to provide a sand-coated casting mold for large casting iron molds to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a large casting iron mold with sand coating, comprising an iron mold body, a bottom mold at the bottom of the iron mold body, a casting mechanism on the iron mold body, the casting mechanism including a top mold, a top mold at the top of the iron mold body, a slag collection bag inside the bottom mold, an iron mold sand coating core inside the iron mold body, and the iron mold sand coating core being located between the top mold and the slag collection bag; a heat dissipation mechanism is jointly provided on the iron mold body and the bottom mold, the heat dissipation mechanism including a first through pipe and a second through pipe, the first through pipe and the second through pipe being installed on the bottom mold, and multiple heat dissipation blocks being installed on the iron mold body, the first through pipe and the second through pipe penetrating the multiple heat dissipation blocks, and each of the first through pipe and the second through pipe having multiple through slots.

[0006] In a preferred embodiment, a sprue is installed on the top mold, the sprue extending through the sand core of the iron mold to the interior of the bottom mold.

[0007] In a preferred embodiment, the top mold is provided with a pouring cup, and the pouring cup is fixedly connected to the top of the direct pouring pipe.

[0008] In a preferred embodiment, a horizontal pouring pipe is provided on the bottom of the side wall of the direct pouring pipe, and the horizontal pouring pipe extends into the interior of the slag collection bag.

[0009] In a preferred embodiment, an inner gating ceramic tube is installed on the bottom mold, and an inner groove is provided inside the bottom mold, with the two ends of the inner groove connected to the inner gating ceramic tube and the slag collection bag, respectively.

[0010] In a preferred embodiment, multiple horizontal gating pipes and multiple inlet ceramic pipes are provided, and the multiple horizontal gating pipes and multiple inlet ceramic pipes are distributed in a ring array.

[0011] In a preferred embodiment, a first pipe fitting is installed at the bottom of the first pipe, and a second pipe fitting is installed at the top of the second pipe.

[0012] In a preferred embodiment, the top mold is equipped with multiple feeding risers, and the multiple feeding risers are distributed in a ring array.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This invention comprises a mold body, bottom mold, top mold, pouring cup, sprue, mold sand core, slag collection bag, horizontal pouring pipe, inner sprue ceramic pipe, inner groove, and heat dissipation blocks. Molten iron is poured into the sprue through the pouring cup, then flows gradually into the corresponding horizontal pouring pipe. It then enters the slag collection bag, where it is filtered before flowing into the corresponding inner groove. From there, it flows into the inner sprue ceramic pipe and finally exits, reaching the casting cavity formed by the mold body, bottom mold, top mold, and mold sand core. During this process, multiple heat dissipation blocks on the mold body increase the heat dissipation area, facilitating the absorption and dissipation of heat generated during casting. Furthermore, coolant is pre-filled into the inner cavity of the heat dissipation blocks, further enhancing heat absorption and ensuring effective cooling of the casting. This prevents defects such as porosity, shrinkage cavities, and looseness, thus guaranteeing a high yield rate.

[0015] This utility model, by setting a first through pipe, a second through pipe, a first pipe connector, a second pipe connector, and a through groove, further allows the first pipe connector on the first through pipe and the second pipe connector on the second through pipe to be connected to the corresponding coolant circulation pipes. With the through grooves on the first and second through pipes, it facilitates continuous circulation of coolant in the inner cavity of the heat sink, thereby further improving the heat dissipation effect on the casting and making the heat dissipation more uniform, thus further ensuring the yield of the casting. Attached Figure Description

[0016] Figure 1This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the iron mold body, bottom mold, casting mechanism and feeding riser of the present utility model.

[0018] Figure 3 This is a schematic diagram of the heat dissipation mechanism of the present invention.

[0019] Figure 4 This is a schematic diagram of the first through-pipe, the heat sink, and the second through-pipe of the present invention.

[0020] Figure 5 This is an enlarged schematic diagram of part A of the structure of this utility model;

[0021] Figure 6 This is an enlarged schematic diagram of part B of the structure of this utility model.

[0022] In the diagram: 1. Iron mold body; 2. Bottom mold; 3. Casting mechanism; 301. Top mold; 302. Pour cup; 303. Direct pouring pipe; 304. Iron mold sand core; 305. Slag collection bag; 306. Horizontal pouring pipe; 307. Inner gate ceramic pipe; 308. Inner groove; 4. Heat dissipation mechanism; 401. First through pipe; 402. Second through pipe; 403. Heat dissipation block; 404. First pipe joint; 405. Second pipe joint; 406. Through groove; 5. Shrinkage riser. Detailed Implementation

[0023] The present invention will be further described below with reference to the embodiments.

[0024] The following embodiments are used to illustrate the present invention, but should not be used to limit the scope of protection of the present invention. The conditions in the embodiments can be further adjusted according to specific conditions, and simple improvements to the method of the present invention under the premise of the concept of the present invention are all within the scope of protection claimed by the present invention.

[0025] Please see Figure 1-6This utility model provides a large casting iron mold with sand coating, including an iron mold body 1, a bottom mold 2 at the bottom of the iron mold body 1, a casting mechanism 3 on the iron mold body 1, the casting mechanism 3 including a top mold 301, the top of the iron mold body 1 having a top mold 301, a slag collection bag 305 inside the bottom mold 2, an iron mold sand core 304 inside the iron mold body 1, and the iron mold sand core 304 being located between the top mold 301 and the slag collection bag 305, a heat dissipation mechanism 4 being provided on the iron mold body 1 and the bottom mold 2, the heat dissipation mechanism 4 including a first through pipe 401 and a second through pipe 402, the first through pipe 401 and the second through pipe 402 being installed on the bottom mold 2, and a plurality of heat dissipation blocks 403 being installed on the iron mold body 1, the first through pipe 401 and the second through pipe 402 penetrating the plurality of heat dissipation blocks 403, and the first through pipe 401 and the second through pipe 402 each having a plurality of through grooves 406.

[0026] Specifically, such as Figure 2 and Figure 5 As shown, a sprue pipe 303 is installed on the top mold 301. The sprue pipe 303 extends through the sand core 304 of the iron mold to the interior of the bottom mold 2. A pouring cup 302 is provided on the top mold 301 and is fixedly connected to the top of the sprue pipe 303. A horizontal pouring pipe 306 is provided on the bottom of the side wall of the sprue pipe 303 and extends into the interior of the slag collection bag 305. An inner gate ceramic pipe 307 is installed on the bottom mold 2. An inner groove 308 is provided inside the bottom mold 2, and the two ends of the inner groove 308 are respectively connected to the inner... When in use, the molten iron is poured into the straight sprue 303 through the pouring cup 302. The molten iron then flows into the corresponding horizontal sprue 306 through the straight sprue 303, and then into the slag collection pot 305 through the horizontal sprue 306. After being filtered by the slag collection pot 305, the molten iron flows into the corresponding inner groove 308, and then into the inner sprue 307 through the inner groove 308. Finally, it flows out from the inner sprue 307 and reaches the casting cavity for casting.

[0027] Specifically, such as Figure 2 and Figure 5 As shown, there are multiple horizontal gating pipes 306 and multiple ceramic inlet gating pipes 307, and the multiple horizontal gating pipes 306 and ceramic inlet gating pipes 307 are arranged in a ring array to further improve the casting effect of the casting and make the casting more uniform.

[0028] Specifically, such as Figure 3 , Figure 4 and Figure 6 As shown, a first pipe connector 404 is installed at the bottom of the first pipe 401, and a second pipe connector 405 is installed at the top of the second pipe 402. The first pipe connector 404 and the second pipe connector 405 facilitate the connection of the first pipe 401 and the second pipe 402 with the coolant circulation pipe.

[0029] Specifically, such as Figure 1 and Figure 2 As shown, multiple feeding risers 5 are installed on the top mold 301, and these risers 5 are arranged in a ring array. The feeding risers 5 are used to compensate for the shrinkage that occurs during the solidification of the casting, reducing defects such as shrinkage cavities and porosity.

[0030] The working principle and usage process of this utility model are as follows: In actual casting, the user can pour the corresponding molten iron into the straight sprue 303 through the pouring cup 302. The molten iron then gradually flows into the corresponding horizontal sprue 306 through the straight sprue 303, and then enters the slag collection pot 305 through the horizontal sprue 306. After being filtered by the slag collection pot 305, the molten iron flows into the corresponding inner groove 308, and then into the inner sprue ceramic tube 307 through the inner groove 308. Finally, it flows out from the inner sprue ceramic tube 307 and reaches the iron mold body 1 and the bottom mold. 2. The casting cavity formed by the top mold 301 and the iron mold sand core 304 is used for casting. During the above process, the heat dissipation area is increased by multiple heat dissipation blocks 403 on the iron mold body 1, which facilitates the absorption and dissipation of heat generated during casting. At the same time, the inner cavity of the heat dissipation block 403 is injected with the corresponding coolant in advance, which further facilitates the absorption of heat generated during casting, ensures the cooling effect of the casting, avoids defects such as porosity, shrinkage cavities and porosity in the casting, and ensures the yield of the casting.

[0031] Furthermore, the first pipe connector 404 on the first pipe 401 and the second pipe connector 405 on the second pipe 402 can be connected to the corresponding coolant circulation pipes, and with the through grooves 406 on the first pipe 401 and the second pipe 402, the coolant in the inner cavity of the heat sink 403 can be continuously circulated, thereby further improving the heat dissipation effect on the casting and making the heat dissipation more uniform, thus further ensuring the yield of the casting.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sand-coated casting mold for large castings, comprising a mold body (1), characterized in that: The bottom of the iron mold body (1) is provided with a bottom mold (2), and the iron mold body (1) is provided with a casting mechanism (3). The casting mechanism (3) includes a top mold (301). The top of the iron mold body (1) is provided with a top mold (301). The bottom mold (2) is provided with a slag collection bag (305). The iron mold body (1) is provided with an iron mold sand core (304). The iron mold sand core (304) is located between the top mold (301) and the slag collection bag (305). The iron mold body (1) and the bottom mold (2) A heat dissipation mechanism (4) is provided on both sides. The heat dissipation mechanism (4) includes a first through pipe (401) and a second through pipe (402). The bottom mold (2) is equipped with the first through pipe (401) and the second through pipe (402). The iron body (1) is equipped with multiple heat dissipation blocks (403). The first through pipe (401) and the second through pipe (402) pass through the multiple heat dissipation blocks (403). The first through pipe (401) and the second through pipe (402) are respectively provided with multiple through slots (406).

2. The sand-coated casting mold for large casting iron molds according to claim 1, characterized in that: A sprue pipe (303) is installed on the top mold (301), and the sprue pipe (303) extends through the iron mold sand core (304) to the interior of the bottom mold (2).

3. The sand-coated casting mold for large casting iron molds according to claim 2, characterized in that: The top mold (301) is provided with a pouring cup (302), and the pouring cup (302) is fixedly connected to the top of the direct pouring pipe (303).

4. The sand-coated casting mold for large casting iron molds according to claim 3, characterized in that: A horizontal pouring pipe (306) is provided on the bottom of the side wall of the straight pouring pipe (303), and the horizontal pouring pipe (306) extends into the interior of the slag collection bag (305).

5. A sand-coated casting mold for large casting iron molds according to claim 1, characterized in that: The bottom mold (2) is equipped with an inner gating ceramic pipe (307), and the bottom mold (2) has an inner groove (308) inside, and the two ends of the inner groove (308) are respectively connected to the inner gating ceramic pipe (307) and the slag collection bag (305).

6. The sand-coated casting mold for large casting iron molds according to claim 4, characterized in that: The horizontal gating pipe (306) and the inner gating ceramic pipe (307) are provided in multiples, and the multiple horizontal gating pipes (306) and the inner gating ceramic pipes (307) are distributed in a ring array.

7. A sand-coated casting mold for large casting iron molds according to claim 1, characterized in that: The bottom of the first pipe (401) is equipped with a first pipe connector (404), and the top of the second pipe (402) is equipped with a second pipe connector (405).

8. A sand-coated casting mold for large casting iron molds according to claim 1, characterized in that: The top mold (301) is equipped with multiple feeding risers (5), and the multiple feeding risers (5) are distributed in a ring array.

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