Mold runner structure and die casting mold

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By optimizing the mold flow channel structure, the problem of forward flow interception caused by the condensation layer during aluminum alloy die casting was solved, achieving uniform filling of aluminum liquid and efficient production, thus improving the quality and performance of die castings.

CN224525972UActive Publication Date: 2026-07-21ZHUHAI SANRUI JINGGONG TECH CO LTD

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Patent Information

Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner: ZHUHAI SANRUI JINGGONG TECH CO LTD
Filing Date: 2025-08-15
Publication Date: 2026-07-21

AI Technical Summary

Technical Problem

Existing mold flow channels are prone to generating a condensation layer during aluminum alloy die casting, leading to a forward flow phenomenon that affects the quality of die castings.

Method used

Design a mold runner structure including a sprue, main runner, horizontal runner and branch runner. Through components such as buffer cavity, bent runner and feed runner, form an efficient and balanced flow path, reduce the probability of condensation layer entering the mold cavity and optimize the aluminum liquid filling process.

Benefits of technology

It improves the forming quality and production efficiency of die-cast parts, ensures uniform filling of molten aluminum, reduces condensation layer and turbulence, and enhances product consistency and performance.

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Abstract

The utility model discloses a die runner structure and die casting die, this die runner structure includes handle, main runner, cross runner and shunt. Handle is provided with cold material groove, main runner is connected in handle, the first end of cross runner is provided with buffer hole, and the second end of cross runner is connected in main runner, the first end of shunt is provided with gate, and the second end of shunt is connected in cross runner, and a plurality of shunts are connected in cross runner, and the included angle of the shunt close to handle and cross runner is acute angle. Through being provided with cold material groove and buffer hole and the included angle of shunt and cross runner is acute angle, form an efficient balanced flow path, reduce the probability that condensation layer enters die cavity, and improve the forming quality of die casting product.

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Description

Technical Field

[0001] This utility model relates to the field of mold technology, and in particular to a mold flow channel structure and a die casting mold. Background Technology

[0002] Minor cracks frequently appear in aluminum alloy die castings. These cracks are not visible to the naked eye on the surface of the die casting; the product must be torn open to reveal a thin layer of condensation film inside. This condensation film is an oxide layer formed by the contact of molten aluminum with air and other media, and is called a condensation layer. Since it is impossible to completely prevent the formation of oxide layer due to contact between molten aluminum and air, the mold, and release agents during the process of molten aluminum flowing from the furnace to the ladle, then to the barrel, and finally into the mold, the formation of this condensation layer cannot be completely avoided. Current mold runners exhibit a phenomenon called "front-end flow rushing," where molten aluminum with a larger condensation layer enters the cavity first, affecting the quality of the die casting. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a mold flow channel structure and a die-casting mold, which can discharge the condensed layer outside the mold cavity during the process of aluminum liquid filling into the mold cavity, thereby improving the quality of the die-cast parts.

[0004] On one hand, this utility model embodiment provides a mold flow channel structure, including: Material handle, wherein the material handle is provided with a cold material trough; Main gating, which is connected to the material sprue; A horizontal pouring channel, wherein a buffer cavity is provided at the first end of the horizontal pouring channel, and the second end of the horizontal pouring channel is connected to the main pouring channel; The runner has a gate at its first end and a connection to the runner at its second end. Multiple runners are connected to the runner, and the runners near the sprue form an acute angle with the runner.

[0005] According to some embodiments of the present invention, the opening of the buffer cavity is provided with a bent flow channel, and the bent flow channel is connected to the horizontal pouring channel.

[0006] According to some embodiments of the present invention, a feed gating channel is provided below the gate, and the feed gating channel is connected to the branch channel.

[0007] According to some embodiments of this utility model, the cross-sections of the multiple diversion channels are all rectangular.

[0008] According to some embodiments of the present invention, the number of horizontal runners is two, and the horizontal runners include a first runner and a second runner, both of which are connected to the material stalk.

[0009] According to some embodiments of the present invention, the flow channel includes a first flow channel, a second flow channel, and a third flow channel, wherein the first flow channel, the second flow channel, and the third flow channel are all connected to the first gating system.

[0010] According to some embodiments of the present invention, the angle between the third runner and the first gating system is an acute angle.

[0011] According to some embodiments of the present invention, the angle between the second runner and the first gating is greater than the angle between the third runner and the first gating.

[0012] According to some embodiments of the present invention, the angle between the first flow channel and the first gating is greater than the angle between the second flow channel and the first gating.

[0013] On the other hand, this utility model embodiment also provides a die-casting mold, including the above-described mold flow channel structure.

[0014] This utility model has at least the following beneficial effects: The mold runner structure includes a sprue, main runner, sprue, and branch runners. The sprue collects and stores the initial cold slurry flowing into the die-casting mold through a cold slug well, pushing the molten aluminum with a significant condensation layer towards the cold slug well. The main runner guides the molten aluminum from the sprue into the die-casting mold, acting as the primary feed channel to ensure that the molten aluminum fills the entire mold evenly and fully. A buffer cavity at the first end of the sprue allows the molten aluminum to enter from the front, reducing the probability of the condensation layer entering the mold cavity and regulating the pressure and flow rate during the aluminum filling process to optimize the filling effect. The second end of the sprue connects to the main runner, guiding the molten aluminum to the next branch path. The first end of the branch runner has a gate, which controls and regulates the amount of molten aluminum entering each mold cavity, ensuring balanced filling across multiple cavities. The acute angle between the branch runner and the sprue near the sprue ensures that the molten aluminum reaches the gate simultaneously, preventing the molten aluminum from preferentially reaching the mold cavity. The combined action of all components creates an efficient and balanced flow path, reducing the probability of condensation entering the mold cavity and improving the molding quality of die-cast products.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is one of the structural schematic diagrams of the mold flow channel structure according to an embodiment of this utility model; Figure 2This is a second schematic diagram of the mold flow channel structure according to an embodiment of the present utility model; Figure 3 This is the third schematic diagram of the mold flow channel structure according to an embodiment of the present utility model; Figure 4 This is the fourth schematic diagram of the mold flow channel structure in an embodiment of this utility model.

[0017] Figure label: Material handle 100, cold slug 110, main runner 200, horizontal runner 300, first runner 301, second runner 302, buffer cavity 310, bent runner 320, branch runner 400, first runner 401, second runner 402, third runner 403, gate 410, feed runner 420. Detailed Implementation

[0018] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying 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 accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0019] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, 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.

[0020] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first," "second," etc., are used in the description, they are only for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the sequential relationship of the indicated technical features.

[0021] In the description of this utility model, unless otherwise explicitly defined, the terms "setting", "installing", "connecting", "linking", etc. should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in combination with the specific content of the technical solution.

[0022] The technical solution of this utility model will be described in detail below with reference to the accompanying drawings and specific embodiments: Please see Figures 1 to 3This embodiment discloses a mold runner structure, including a sprue 100, a main runner 200, a horizontal runner 300, and a branch runner 400. The sprue 100 is provided with a cold slug groove 110; the main runner 200 is connected to the sprue 100; the first end of the horizontal runner 300 is provided with a buffer cavity 310, and the second end of the horizontal runner 300 is connected to the main runner 200; the first end of the branch runner 400 is provided with a gate 410, and the second end of the branch runner 400 is connected to the horizontal runner 300. Multiple branch runners 400 are connected to the horizontal runner 300, and the angle between the branch runner 400 near the sprue 100 and the horizontal runner 300 is an acute angle.

[0023] The sprue 100 collects and stores the initial cold slurry flowing into the die-casting mold via the cold slurry tank 110, pushing the molten aluminum with a larger condensation layer towards the cold slurry tank 110. The main runner 200 guides the molten aluminum from the sprue 100 into the die-casting mold, acting as the main feed channel to ensure that the molten aluminum can fill the entire die-casting mold evenly and fully. The buffer cavity 310 at the first end of the runner 300 allows the molten aluminum to enter from the front, reducing the probability of the condensation layer entering the mold cavity, and adjusting the pressure and flow rate during the molten aluminum filling process to optimize the mold filling effect; the second end of the runner 300 is connected to the main runner 200, conducting the molten aluminum to the next path branch. The first end of the branch runner 400 is provided with a gate 410, which can control and adjust the amount of molten aluminum entering each mold cavity, ensuring the filling balance of multiple mold cavities. The acute angle between the branch runner 400 near the sprue 100 and the runner 300 is set so that the molten aluminum can reach the gate simultaneously, preventing the molten aluminum from preferentially reaching the mold cavity. The combined action of all components creates an efficient and balanced flow path, reducing the probability of condensation entering the mold cavity and improving the molding quality of die-cast products.

[0024] Please see Figure 2 The buffer cavity 310 has a bent flow channel 320 at its opening, which connects to the runner 300. The bent flow channel 320 alters the direction of the molten aluminum flow, helping to better control the filling process and reduce air capture. The molten aluminum enters the bent flow channel 320 through the runner 300, and then flows into the buffer cavity 310. The bent design ensures that the molten aluminum fills the mold evenly, reducing the probability of a condensed layer entering the mold cavity, thus forming a high-quality die-cast part.

[0025] Please see Figure 2 A feed runner 420 is provided below the gate 410, and the feed runner 420 connects to the runner 400. The gate 410 controls the flow rate and volume of the molten aluminum to ensure that the molten aluminum fills the entire cavity. The runner 400 distributes the molten aluminum evenly to each mold cavity, ensuring uniformity and consistency of filling. The feed runner 420 reduces turbulence and pressure loss generated during the introduction of molten aluminum, improving filling efficiency.

[0026] Please see Figure 2 The multiple flow channels 400 all have rectangular cross-sections. These rectangular cross-section flow channels 400 provide good flowability, reduce flow resistance, ensure that the molten aluminum is evenly distributed and effectively removes heat, thereby improving overall heat dissipation efficiency.

[0027] Please see Figure 3 and Figure 4 There are two horizontal runners 300, each including a first runner 301 and a second runner 302, both connected to the sprue 100. Molten aluminum is introduced through the first runner 301 and the second runner 302 to fill the casting mold cavity. The connection between the first runner 301 and the second runner 302 ensures that the molten aluminum can flow into the casting mold cavity through a predetermined path, thereby achieving uniform cooling and solidification of the casting; ensuring that the molten aluminum is evenly distributed inside the casting, reducing thermal stress and porosity, and improving the quality of the die-casting.

[0028] Please see Figure 3 and Figure 4 The runner 400 includes a first runner 401, a second runner 402, and a third runner 403, all of which are connected to the first gating 301. The first runner 401 guides and controls the molten aluminum from the first gating 301 into a designated area of the mold, ensuring uniform material distribution. The second runner 402 also guides the molten aluminum, optimizing its flow path, reducing turbulence and impact, and allowing for a smoother injection into the mold. The third runner 403 further disperses the incoming material, ensuring uniform material distribution in each casting and improving product quality consistency. By guiding the molten aluminum through a pre-set path, it first enters the runner 400 through the first gating 301, and then is dispersed to different parts of the mold through the first runner 401, second runner 402, and third runner 403, reducing defects during the casting process and ensuring stable performance of the produced die-cast parts.

[0029] Please see Figure 3 and Figure 4 The angle between the third runner 403 and the first runner 301 is an acute angle. The angle between the second runner 402 and the first runner 301 is greater than the angle between the third runner 403 and the first runner 301. The angle between the first runner 401 and the first runner 301 is greater than the angle between the second runner 402 and the first runner 301. This is to ensure that the molten aluminum can reach the gate simultaneously, preventing the molten aluminum at the front from preferentially reaching the mold cavity.

[0030] This embodiment also provides a die-casting mold, including the mold flow channel structure described above.

[0031] The mold runner structure includes a sprue 100, a main runner 200, a sprue 300, and a branch runner 400. The sprue 100 collects and stores the initial cold slurry flowing into the die-casting mold via a cold slurry 110, pushing the molten aluminum with a significant condensation layer towards the cold slurry 110, thus improving the quality of the die-cast part. The main runner 200 guides molten aluminum from the sprue 100 into the die-casting mold, acting as the main feed channel to ensure that the molten aluminum fills the entire die-casting mold evenly and fully. A buffer cavity 310 at the first end of the sprue 300 allows the molten aluminum to enter from the front, reducing the probability of the condensation layer entering the mold cavity and regulating the pressure and flow rate during the aluminum filling process to optimize the filling effect. The second end of the sprue 300 connects to the main runner 200, effectively transferring the molten aluminum to the next path branch. The first end of the branch runner 400 has a gate 410, which can control and regulate the amount of molten aluminum entering each mold cavity, ensuring balanced filling of multiple mold cavities. The acute angle between the runner 400 and the horizontal sprue 300 near the sprue 100 ensures that the molten aluminum reaches the gate simultaneously, preventing the leading molten aluminum from preferentially reaching the mold cavity. The combined action of these components creates an efficient and balanced flow path, reducing the probability of a condensed layer entering the mold cavity and improving the molding quality and production efficiency of the die-cast parts.

[0032] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A mold runner structure, characterized by, The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure.

2. The mold runner structure of claim 1, wherein The application relates to a mold runner structure.

3. The mold runner structure of claim 1, wherein The application relates to a mold runner structure.

4. The mold runner structure of claim 1, wherein The application relates to a mold runner structure.

5. The mold runner structure of claim 1, wherein The application relates to a mold runner structure.

6. The mold runner structure of claim 5, wherein The application relates to a mold runner structure.

7. The mold runner structure of claim 6, wherein The application relates to a mold runner structure.

8. The mold runner structure of claim 7, wherein The application relates to a mold runner structure.

9. The mold runner structure of claim 7, wherein, The application relates to a mold runner structure.

10. A die-casting mold characterized by comprising: The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure. The application relates to a mold runner structure.