Aluminum alloy direct casting runner

Abstract

The utility model discloses an aluminum alloy direct casting runner, which comprises a water inlet and a main runner connected with the water inlet, the main runner comprises a first runner and a second runner which are connected with each other, and the water inlet is arranged at the joint of the first runner and the second runner. The flow control gate is arranged on one of the first runner and the second runner, the flow control gate is arranged close to the water inlet, and the cross sectional area of the flow control gate allowing fluid to pass through is smaller than that of the first runner and that of the second runner; and the exhaust channel is formed in one of the first runner and the second runner, is distributed adjacent to the flow control gate, is located on the side, away from the water inlet, of the flow control gate and is used for exhausting air in the mold cavity. According to the utility model, air in the forming cavity in the mold can be smoothly exhausted, and the problem of poor air holes generated in the casting process is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of casting, in particular to a direct gating casting runner for aluminum alloy. Background Art

[0002] Some parts made of aluminum alloy materials are formed by direct gating casting. Liquid aluminum alloy is injected into a mold, and the liquid aluminum alloy enters the cavity through the runner in the mold. After cooling, the required parts can be obtained. Conventionally, during the direct gating casting process of aluminum alloy, the liquid aluminum alloy has a high temperature and generates flue gas in the cavity. The flue gas is mainly discharged through parts such as the mold clamping surface, ejector pin position, and exhaust plug. However, because the flow rate of the aluminum liquid is very fast during direct gating, and the space at the exhaust part is relatively small, the air in the cavity during the casting process cannot be smoothly discharged, resulting in poor air holes in the product and seriously reducing the yield of the product.

[0003] Therefore, it is necessary to design a direct gating casting runner for aluminum alloy with an exhaust function to solve the above problems. Summary of the Utility Model

[0004] 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 direct gating casting runner for aluminum alloy, which can ensure the smooth discharge of air in the forming cavity of the mold and solve the problem of poor air holes generated during the casting process.

[0005] A direct gating casting runner for aluminum alloy according to an embodiment of the first aspect of the utility model includes a water inlet and a main runner connected to the water inlet. The main runner includes a first runner and a second runner connected to each other. The water inlet is arranged at the connection of the first runner and the second runner. It is characterized in that it includes: a flow control gate, which is arranged in one of the first runner and the second runner, the flow control gate is arranged close to the water inlet, and the cross-sectional area of the flow control gate allowing fluid to pass through is smaller than the cross-sectional areas of the first runner and the second runner; an exhaust channel, which is arranged in one of the first runner and the second runner, the exhaust channel is adjacent to the flow control gate and is located on the side of the flow control gate away from the water inlet, and is used for discharging the air in the mold cavity.

[0006] A direct gating casting runner for aluminum alloy according to an embodiment of the utility model has at least the following beneficial effects:

[0007] By providing a flow control gate and an exhaust passage, liquid aluminum alloy enters the main passage through the water inlet. The liquid aluminum alloy can flow into the first runner and the second runner. The cross-sectional area of the flow control gate allowing fluid to pass through is smaller than the cross-sectional areas of the first runner and the second runner. Therefore, the flow rate of the liquid aluminum alloy in one runner is smaller than that in the other runner. For example, if the flow control gate is provided in the second runner, then the second runner is not filled with liquid aluminum alloy, and a space for allowing air to flow will be formed in the second runner. During the casting process, air, fumes, etc. generated in the mold cavity can be discharged from the exhaust passage through the second runner, which helps to efficiently discharge air and avoid the traditional method of discharging air through parts such as the mold clamping surface, ejector pin position, and exhaust plug, solves the problem of poor porosity during the casting process, and improves the yield rate of casting products.

[0008] According to some embodiments of the present invention, at least one branch portion is respectively provided in the first runner and the second runner, and the branch portion communicates with the mold cavity.

[0009] According to some embodiments of the present invention, the first runner and the second runner are arranged in a U shape.

[0010] According to some embodiments of the present invention, the flow control gate and the exhaust passage are provided in the second runner, and a flow rate control gate is provided in the first runner. The cross-sectional area of the flow rate control gate allowing fluid to pass through is smaller than the cross-sectional area of the flow control gate.

[0011] According to some embodiments of the present invention, the exhaust passage extends vertically or obliquely upward.

[0012] Additional aspects and advantages of the present invention will be given in part in the following description, will become apparent in part from the following description, or will be understood through the practice of the present invention. Description of the Drawings

[0013] The above and / or additional aspects and advantages of the present invention will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0014] Figure 1 is a schematic structural diagram of a direct pouring casting runner for aluminum alloy according to an embodiment of the present invention;

[0015] Figure 2 is Figure 1 a schematic structural diagram of another perspective of the direct pouring casting runner for aluminum alloy shown.

[0016] Reference numerals: 100 - water inlet, 110 - first runner, 120 - second runner, 130 - flow control gate, 140 - exhaust passage, 150 - branch portion, 160 - flow rate control gate. Detailed implementation manners

[0017] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, wherein 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 and are only used to explain the present utility model and should not be construed as a limitation to the present utility model.

[0018] In the description of the present utility model, it should be understood that with respect to the orientation description, such as the orientation or positional relationship indicated by up, down, front, back, left, right, etc., is based on the orientation or positional relationship shown in the drawings. It is 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 therefore should not be construed as a limitation to the present utility model.

[0019] In the description of the present utility model, the meaning of several is one or more, the meaning of multiple is two or more, greater than, less than, exceeding, etc. are understood as not including the present number, and above, below, within, etc. are understood as including the present number. If there is a description of first and second, it is only for the purpose of distinguishing technical features and should not be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0020] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. 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 circumstances.

[0021] A direct-pouring casting runner for aluminum alloy according to an embodiment of the present utility model will be described below with reference to the drawings.

[0022] In the structure of the casting mold, a runner and a forming cavity are provided in the mold. The runner is communicated with the forming cavity, and the liquid aluminum alloy enters the forming cavity through the runner.

[0023] Refer to Figure 1 and Figure 2 A direct-pouring casting runner for aluminum alloy according to an embodiment of the present utility model includes a water inlet 100 and a main runner connected to the water inlet 100. The main runner includes a first runner 110 and a second runner 120 connected to each other, and the water inlet 100 is provided at the connection of the first runner 110 and the second runner 120.

[0024] It should be noted that the water inlet 100 is the inlet for receiving molten aluminum, and during casting, the molten aluminum enters the runner from the water inlet 100.

[0025] Specifically, the direct gating runner for aluminum alloy casting further includes a flow control gate 130 and an exhaust passage 140. The flow control gate 130 is disposed in one of the first runner 110 and the second runner 120. The flow control gate 130 is disposed near the water inlet 100, and the cross-sectional area of the flow control gate 130 allowing fluid to pass through is smaller than the cross-sectional areas of the first runner 110 and the second runner 120. The exhaust passage 140 is disposed in one of the first runner 110 and the second runner 120. The exhaust passage 140 is adjacent to the flow control gate 130 and is located on the side of the flow control gate 130 away from the water inlet 100, and is used to discharge the air in the mold cavity.

[0026] In some embodiments of the present utility model, at least one branch portion 150 is respectively disposed on the first runner 110 and the second runner 120, and the branch portion 150 communicates with the molding cavity of the mold.

[0027] According to the different structures of the products, a plurality of branch portions 150 can be provided, and the first runner 110 and the second runner 120 flow the liquid aluminum alloy into the molding cavity through the branch portions 150.

[0028] In some embodiments of the present utility model, the first runner 110 and the second runner 120 are arranged in a U shape.

[0029] Therefore, the resistance of the liquid aluminum alloy flowing in the first runner 110 and the second runner 120 is small, which is beneficial to the liquid aluminum alloy filling the molding cavity of the mold.

[0030] In some embodiments of the present utility model, the flow control gate 130 and the exhaust passage 140 are disposed in the second runner 120, and a flow rate control gate 160 is disposed on the first runner 110. The cross-sectional area of the flow rate control gate 160 allowing fluid to pass through is smaller than the cross-sectional area of the flow control gate 130.

[0031] Therefore, the flow rate control gate 160 can control the flow rate of the liquid aluminum alloy in the first runner 110, which is beneficial to guiding the liquid aluminum alloy from the first runner 110 to the second runner 120.

[0032] In some embodiments of the present utility model, the exhaust passage 140 extends vertically or obliquely upward, so as to prevent the liquid aluminum alloy from flowing out of the exhaust passage 140.

[0033] The utility model solves the problem of poor air holes generated during the casting process and improves the yield rate of casting products by setting a flow control gate 130 and an exhaust passage 140. Liquid aluminum alloy enters the main passage through the water inlet 100 and can flow into the first runner 110 and the second runner 120. The cross-sectional area of the flow control gate 130 allowing the fluid to pass through is smaller than the cross-sectional areas of the first runner 110 and the second runner 120. Therefore, the flow rate of the liquid aluminum alloy in one runner is smaller than that in the other runner. For example, if the flow control gate 130 is arranged in the second runner 120, the second runner 120 is not filled with the liquid aluminum alloy, and a space for allowing air to flow will be formed in the second runner 120. During the casting process, air, flue gas, etc. generated in the mold forming cavity can be discharged from the exhaust passage 140 through the second runner 120, which helps to efficiently discharge the air and avoids the traditional method of discharging air through parts such as the mold clamping surface, ejector pin position, and exhaust plug, thus solving the problem of poor air holes generated during the casting process and improving the yield rate of casting products.

[0034] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" 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.

[0035] The embodiments of the present utility model have been described in detail above in conjunction with the accompanying drawings. However, the present utility model is not limited to the above embodiments. Without departing from the gist of the present utility model, various changes can be made within the knowledge scope of those of ordinary skill in the art.

Claims

1. An aluminum alloy direct pouring casting runner, comprising a water inlet (100) and a main runner connected to the water inlet (100), the main runner including a first runner (110) and a second runner (120) connected to each other, and the water inlet (100) is arranged at the connection of the first runner (110) and the second runner (120), characterized in that, Including: A flow control gate (130) is provided in one of the first runner (110) and the second runner (120). The flow control gate (130) is disposed near the water inlet (100). The cross-sectional area of the flow control gate (130) allowing fluid to pass through is smaller than the cross-sectional areas of the first runner (110) and the second runner (120). An exhaust passage (140) is provided in one of the first runner (110) and the second runner (120). The exhaust passage (140) is adjacent to the flow control gate (130) and is located on the side of the flow control gate (130) away from the water inlet (100) for exhausting air in the mold cavity.

2. The direct pouring casting runner for aluminum alloy according to claim 1, characterized in that At least one branch portion (150) is respectively provided in the first runner (110) and the second runner (120), and the branch portion (150) communicates with the molding cavity of the mold.

3. A direct gating casting runner for aluminum alloy according to claim 1, characterized in that, The first runner (110) and the second runner (120) are arranged in a U shape.

4. A direct gating casting runner for aluminum alloy according to claim 1, characterized in that, The flow control gate (130) and the exhaust passage (140) are provided in the second runner (120). The first runner (110) is provided with a speed control gate (160). The cross-sectional area of the speed control gate (160) allowing fluid to pass through is smaller than the cross-sectional area of the flow control gate (130).

5. A direct gating casting runner for aluminum alloy according to claim 1, characterized in that, The exhaust passage (140) extends vertically or obliquely upward.

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