Fan wheel casting mold

Abstract

The utility model discloses a fan wheel pouring mold, four same fan wheel cavities are formed in the mold, the fan wheel cavities are uniformly distributed in the circumferential direction of the center of the pouring mold, the distances between the fan wheel cavities and the center point of the pouring mold are equal, and the center point of the mold communicates with a pouring head; the pouring head communicates with four branch runners with the same length, the branch runners are evenly arranged in the circumferential direction of the pouring head, each fan wheel cavity communicates with at least one branch runner, the mold is reasonable in structural design, the four fan wheel cavities can be rapidly filled with molten iron, and the pouring success rate is increased.

Description

Technical Field

[0001] The present application relates to the technical field of casting molds, and in particular to a fan wheel casting mold. Background Art

[0002] The fan wheel is a disc-shaped hub. The side edges and bottom center of the fan wheel are thicker, and the part between the side edges and the bottom center of the fan wheel is thinner. The fan wheel is usually manufactured using a casting mold. One casting mold can often manufacture four fan wheels at the same time to improve production efficiency.

[0003] When the molten iron flows evenly into the mold cavity, the flow rate of the molten iron and its cooling speed will cause certain differences in the strength of each area of ​​the formed casting. For a casting mold that simultaneously manufactures four disc-shaped fan wheels, it is difficult to guide the molten iron to quickly fill the four mold cavities by setting a conventional inlet gate at the position of any disc-shaped fan wheel cavity. The long flow path will also cause the molten iron to cool prematurely, resulting in hollowing and larger bubbles, causing casting failure. Utility Model Content

[0004] In order to overcome the above technical problems, the present application provides a fan wheel casting mold.

[0005] The fan wheel casting mold provided in this application adopts the following technical solution:

[0006] A fan wheel casting mold, the mold is provided with four identical fan wheel cavities, the fan wheel cavities are evenly distributed along the circumference of the center of the casting mold and the distance between each fan wheel cavity and the center point of the casting mold is equal, the center point of the mold is connected with a pouring head, the pouring head is connected with four branch channels of the same length, the branch channels are evenly arranged along the circumference of the pouring head, and each fan wheel cavity is connected with at least one branch channel.

[0007] By adopting the above technical scheme, since the present invention adopts the design of the pouring head and the branch channel, the molten iron can be evenly distributed to the four branch channels after passing through the pouring head, and then quickly fill the four fan wheel cavities through the branch channels, thereby ensuring that the molten iron can evenly and quickly fill the cavity of the entire mold, thereby improving the success rate of fan wheel casting.

[0008] Optionally, the branch flow channels are arranged on the mold, and one end of each branch flow channel away from the pouring head is located between two fan wheel cavities, and each branch flow channel is connected to two adjacent fan wheel cavities at the same time.

[0009] By adopting the above technical solution, the end of each branch channel away from the pouring head is located between the two fan wheel cavities. This design enables each fan wheel cavity to have two liquid inlet points. Through this design, it can further ensure that the molten iron can be evenly distributed in each fan wheel cavity, thereby improving the uniformity and stability of pouring.

[0010] Optionally, a first cold iron connected to the mold is provided around the circumference of each of the fan wheel cavities, and the first cold iron can cool the hot iron in the fan wheel cavity.

[0011] By adopting the above technical solution, since the circumferential side of the fan wheel is thicker, the first chill can increase the cooling speed of the thicker position of the fan wheel, allowing it to be quickly formed, thereby increasing the casting speed of the fan wheel.

[0012] Optionally, the first chiller is provided in multiple pieces, and the multiple pieces of the first chiller together surround the fan wheel cavity.

[0013] By adopting the above technical solution, on the one hand, in order to avoid interference with the branch channel, the first chiller is provided with multiple pieces, which together partially surround the fan wheel cavity; on the other hand, the annular chiller is not convenient to process.

[0014] Optionally, the connection between the first chill and the mold is a detachable connection.

[0015] Optionally, each of the first chills is provided with clamping blocks fixedly connected to the mold on both sides, the clamping blocks are arranged along the length direction of the first chill, and the two clamping blocks clamp the first chill.

[0016] By adopting the above technical solution, the clamping block allows the first cold iron to maintain a stable position and state during use, and will not move or fall off due to vibration or other factors, thereby ensuring the stability and reliability of the cooling effect. In addition, this design facilitates the replacement of the first cold iron.

[0017] Optionally, each branch channel is provided with an exhaust hole.

[0018] By adopting the above technical solution, the setting of these vent holes can effectively discharge the gas generated during the pouring process, preventing them from forming bubbles inside the casting, thereby improving the mechanical properties of the casting. At the same time, the setting of the vent holes also helps to reduce the pressure fluctuation during the pouring process, making the entire pouring process more stable and controllable.

[0019] Optionally, a second cold iron connected to the mold is also provided at the bottom center of the fan wheel cavity.

[0020] By adopting the above technical solution, since the bottom center of the fan wheel is thicker, the second chiller mainly cools the bottom center area of ​​the fan wheel cavity to ensure that this area can achieve the same cooling effect as other areas. Through this design, the temperature gradient inside the fan wheel casting can be further eliminated, the internal stress and deformation problems caused by temperature differences can be reduced, and the overall quality and performance of the fan wheel casting can be improved.

[0021] In summary, the present application includes at least one of the following beneficial technical effects:

[0022] 1. Since the present invention adopts the design of pouring head and branch flow channel, the molten iron can be evenly distributed to four branch flow channels after passing through the pouring head, and then quickly fill the four fan wheel cavities through the branch flow channels, thereby ensuring that the molten iron can evenly and quickly fill the cavity of the entire mold, thereby improving the success rate of fan wheel casting;

[0023] 2. Since the circumferential sides of the fan wheel are thicker, the first chill can increase the cooling speed of the thicker part of the fan wheel, allowing it to form quickly, thereby increasing the casting speed of the fan wheel. Since the bottom center of the fan wheel is thicker, the second chill mainly focuses on cooling the bottom center area of ​​the fan wheel cavity to ensure that this area can achieve the same cooling effect as other areas. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the structure of an embodiment of the present application;

[0025] Figure 2 is a schematic diagram showing the structure of a card block in an embodiment of the present application;

[0026] Figure 3 It is a schematic diagram showing the structure of the second cold iron according to an embodiment of the present application.

[0027] In the figure, 1, fan wheel cavity; 2, pouring head; 3, branch channel; 31, exhaust hole; 4, first chiller; 5, block; 6, second chiller. DETAILED DESCRIPTION

[0028] The following is combined with Figure 1-3 This application is described in further detail.

[0029] An embodiment of the present application discloses a fan wheel casting mold.

[0030] like Figure 1As shown, a fan wheel casting mold is provided on the mold, and four identical fan wheel cavities 1 are evenly distributed along the circumference of the center of the casting mold and the distance between each fan wheel cavity 1 and the center point of the casting mold is equal. The center point of the mold is connected with a pouring head 2, and the bottom of the pouring head 2 is connected with four branch channels 3 of the same length. The branch channels 3 are arranged on the mold, and the branch channels 3 are evenly arranged along the circumference of the pouring head 2. The end of each branch channel 3 away from the pouring head 2 is located between two fan wheel cavities 1, and each branch channel 3 is connected with two adjacent fan wheel cavities 1 at the same time.

[0031] During the pouring process, the molten iron is first evenly distributed to the four branch channels 3 through the pouring head 2. Since the branch channels 3 have the same length and are evenly arranged along the circumference of the pouring head 2, the molten iron can flow into the four fan wheel cavities 1 simultaneously and evenly, thereby ensuring that the cavity of the entire mold can be quickly and evenly filled. This design not only improves the flow efficiency of the molten iron, but also effectively avoids the problems of hollowing and large bubbles caused by premature cooling of the molten iron, and significantly improves the success rate of pouring. The end of each branch channel 3 away from the pouring head 2 is located between the two fan wheel cavities 1. This design makes each fan wheel cavity 1 have two liquid inlet points. Through this design, it can be further ensured that the molten iron can be evenly distributed in each fan wheel cavity 1, improving the uniformity and stability of pouring.

[0032] like Figure 1 As shown, each branch channel 3 is provided with an exhaust hole 31, and the arrangement of these exhaust holes 31 can effectively exhaust the gas in the fan wheel cavity 1 during the pouring process to prevent them from forming bubbles inside the casting, thereby improving the mechanical properties of the casting. At the same time, the arrangement of the exhaust holes 31 also helps to reduce the air pressure fluctuation during the pouring process, making the entire pouring process more stable and controllable.

[0033] like Figure 1 and Figure 2 As shown, each fan wheel cavity 1 is circumferentially provided with a first chill 4 connected to the mold. The first chill 4 is attached to the protrusion on the side of the fan wheel cavity 1 to cool the hot iron in the fan wheel cavity 1. Since the circumferential side of the fan wheel is thicker, the first chill 4 can increase the cooling speed of the thicker position of the fan wheel, allowing it to form quickly, thereby increasing the casting speed of the fan wheel.

[0034] like Figure 1 and Figure 2 As shown, the first chill 4 is provided in multiple pieces, and the multiple pieces of first chill 4 together partially surround the fan wheel cavity 1. On the one hand, in order to avoid interference with the branch channel 3, the first chill 4 is provided in multiple pieces, and the multiple pieces of first chill 4 together partially surround the fan wheel cavity 1. On the other hand, the annular chill is not convenient to process.

[0035] like Figure 1 and Figure 2As shown, both sides of each first chill 4 are provided with clamping blocks 5 fixedly connected to the mold, and the clamping blocks 5 are arranged along the length direction of the first chill 4. The two clamping blocks 5 clamp the first chill 4. Since there are multiple first chills 4 and due to the interference of the position of the branch channel 3, the distance between some of the first chills 4 is closer, and the distance between other parts of the first chills 4 is farther. The same clamping block 5 can be used between the first chills 4 that are close and adjacent to each other to shorten the distance between the two first chills 4 and increase the cooling area of ​​the fan wheel.

[0036] The clamping block 5 enables the first cold iron 4 to maintain a stable position and state during use, and will not move or fall off due to vibration or other factors, thereby ensuring the stability and reliability of the cooling effect. In addition, in order to lower the temperature of the first cold iron 4, the first cold iron 4 needs to be replaced. The design of clamping the first cold iron 4 facilitates the replacement of the first cold iron 4.

[0037] like Figure 3 As shown, a second chiller 6 connected to the mold is also provided at the bottom center of the fan wheel cavity 1. Since the bottom center of the fan wheel is thicker, the second chiller 6 mainly cools the bottom center area of ​​the fan wheel cavity 1 to ensure that this area can achieve the same cooling effect as other areas. Through this design, the temperature gradient inside the fan wheel casting can be further eliminated, the internal stress and deformation problems caused by temperature differences can be reduced, and the overall quality and performance of the fan wheel casting can be finally improved.

[0038] The implementation principle of a fan wheel casting mold in the embodiment of the present application is as follows: molten iron first enters the mold through the pouring head 2, and then is evenly distributed to four branch channels 3. Since the branch channels 3 have the same length and are evenly arranged along the circumference of the pouring head 2, the molten iron can flow into the four fan wheel cavities 1 at the same time and evenly, thereby ensuring that the cavity of the entire mold can be quickly and evenly filled, and the first cold iron 4 and the second cold iron 6 quickly cool down the thicker position of the fan wheel to ensure that this area can achieve the same cooling effect as other areas.

[0039] The embodiments of this specific implementation method are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, all equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A fan wheel casting mold, the mold is provided with four identical fan wheel cavities (1), characterized in that: The fan wheel cavity (1) is evenly distributed along the circumference of the center of the casting mold, and each of the fan wheel cavities (1) is equidistant from the center of the casting mold. The center of the mold is connected to a pouring head (2), and the pouring head (2) is connected to four branch channels (3) of the same length. The branch channels (3) are evenly arranged along the circumference of the pouring head (2), and each of the fan wheel cavities (1) is connected to at least one branch channel (3).

2. A fan wheel casting mold according to claim 1, characterized in that: The branch flow channels (3) are arranged on the mold, and one end of each branch flow channel (3) away from the pouring head (2) is located between two fan wheel cavities (1), and each branch flow channel (3) is connected to two adjacent fan wheel cavities (1) at the same time.

3. A fan wheel casting mold according to claim 1, characterized in that: A first cold iron (4) connected to the mold is provided in the circumference of each fan wheel cavity (1), and the first cold iron (4) can cool the hot iron in the fan wheel cavity (1).

4. A fan wheel casting mold according to claim 3, characterized in that: The first cold iron (4) is provided in a plurality of pieces, and the plurality of first cold irons (4) together surround the fan wheel cavity (1).

5. A fan wheel casting mold according to claim 4, characterized in that: The connection between the first cold iron (4) and the mold is a detachable connection.

6. A fan wheel casting mold according to claim 5, characterized in that: Each of the first cold irons (4) is provided with clamping blocks (5) fixedly connected to the mold on both sides, and the clamping blocks (5) are arranged along the length direction of the first cold iron (4), and the two clamping blocks (5) clamp the first cold iron (4).

7. The fan wheel casting mold according to claim 1, characterized in that: Each branch channel (3) is provided with an exhaust hole (31).

8. The fan wheel casting mold according to claim 1, characterized in that: A second cold iron (6) connected to the mold is also provided at the bottom center of the fan wheel cavity (1).

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