An extrusion die

Abstract

The utility model discloses an extrusion casting mould, including mould body, the mould body includes fixed mould core and movable mould core, and movable mould core and fixed mould core are folded and form the cavity and flow channel, be provided with the slider in the cavity, and the inner wall of movable mould core, the inner wall of fixed mould core and the slider are surrounded and form a plurality of mould cavities between, the characteristic is that flow channel includes the main flow channel with the sprue and is used for realizing the branch flow channel of main flow channel and each mould cavity intercommunication, and the flow direction of casting liquid in main flow channel is identical with the opening and closing direction of movable mould core, makes main flow channel constitute a vertical flow channel, and branch flow channel is cross flow channel. The advantage is simple structure, and the main flow channel with the sprue is designed as vertical flow channel (i. e. the flow direction of casting liquid is identical with the opening and closing direction of movable mould core), and the space in the opening and closing direction of movable mould core is reasonably utilized, effectively breaks through the bottleneck of the horizontal dimension of press machine workstation, and more mould cavities are allowed to be arranged, and through the increase of the number of mould cavities, the part output of single forming is directly improved, thereby the production efficiency is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, and in particular to an extrusion casting mold. Background Technology

[0002] With the increasing market demand for extrusion-cast parts, production capacity in factories is approaching saturation. For small parts, using multi-cavity molds is a key means to significantly improve production efficiency and reduce unit time costs. However, in existing technology, side feeding is conventionally used, where the gate A1 is located on the side of the mold body. Molten metal is injected into the gate A1 through the pressure chamber, first filling the runner A2, and then filling the corresponding cavity A3 from the side of the cavity (e.g., Figure 1 (As shown). This type of mold structure can only expand the number of mold cavities in the lateral dimension. Therefore, due to the limitations of the mold size specifications, when attempting to increase the number of mold cavities, it is easy for the lateral dimension of the mold to exceed the limit of the press worktable, making it impossible to effectively increase the number of mold cavities. This is equivalent to making it difficult to effectively improve production efficiency and control production costs. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide an extrusion casting mold with a simple structure that can effectively increase the number of mold cavities within a limited equipment size range to improve production efficiency and control production costs.

[0004] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: An extrusion casting mold includes a mold body comprising a fixed mold core and a movable mold core. The movable mold core and the fixed mold core are joined to form a cavity and a runner. A slider is disposed within the cavity. Multiple mold cavities are formed between the inner wall of the movable mold core, the inner wall of the fixed mold core, and the slider. The runner includes a main runner with a gate and branch runners for connecting the main runner to each of the mold cavities. The flow direction of the molten casting in the main runner is consistent with the opening and closing direction of the movable mold core, making the main runner a vertical runner. The branch runners are horizontal runners.

[0005] The plurality of the aforementioned mold cavities are arranged around the outside of the branch flow channel.

[0006] The branch flow channel includes a main body and branch sections in the same number as the mold cavities. The main body is connected to the main flow channel, and the branch sections are used to connect the corresponding mold cavities to the main body.

[0007] The branch section is a horizontal direct current channel.

[0008] Compared with existing technologies, the advantages of this utility model are as follows: It has a simple structure, designing the main runner with a gate as a vertical runner (i.e., the direction of molten casting flow is consistent with the opening and closing direction of the moving mold core), which makes reasonable use of the space in the opening and closing direction of the moving mold core, effectively breaking through the bottleneck of the press worktable's lateral dimensions, allowing for the arrangement of more mold cavities. The increase in the number of mold cavities directly increases the output of parts formed in a single molding process, thus significantly improving production efficiency. Furthermore, the feeding method using a central vertical runner combined with branch horizontal runners, compared to the traditional long-distance filling method with all side horizontal runners, allows for a more balanced flow distance of molten metal to each mold cavity, helping to reduce temperature and pressure losses during the filling process, thereby improving the balance of molten casting filling and enhancing the uniformity and consistency of casting quality. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the simulated structure of the flow channel and mold cavity in the prior art; Figure 2 This is a three-dimensional structural diagram of the present invention; Figure 3 This is a three-dimensional structural diagram of the fixed mold core in this utility model; Figure 4 This is a schematic diagram of the simulated structure of the flow channel and mold cavity in this utility model; Figure 5 for Figure 4 A cross-sectional structural diagram. Detailed Implementation

[0010] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0011] As shown in the figure, an extrusion casting mold includes a mold body, which includes a fixed mold core 1 and a moving mold core 2. The moving mold core 2 and the fixed mold core 1 are closed to form a cavity and a runner. A slider 3 is provided in the cavity. Multiple mold cavities 4 are formed between the inner wall of the moving mold core 2, the inner wall of the fixed mold core 1 and the slider 3. The runner includes a main runner 5 with a gate A1 and branch runners 6 for connecting the main runner 5 with each mold cavity 4. The flow direction of the molten casting in the main runner 5 is consistent with the opening and closing direction of the moving mold core 2, so that the main runner 5 constitutes a vertical runner, and the branch runners 6 are horizontal runners.

[0012] In this specific embodiment, multiple mold cavities 4 are arranged around the outside of the branch flow channel 6. This arrangement of the mold cavities 4 in a ring or radial pattern around the center of the branch flow channel 6 maximizes the use of the effective space within the mold, allowing for more mold cavities 4 to be arranged within the same mold projection area. This surrounding arrangement provides a structural basis for achieving equidistant or near-equidistant filling from the central main flow channel 5 to each mold cavity 4. This helps ensure that the molten metal reaches and fills each mold cavity 4 almost simultaneously, thereby significantly improving the uniformity and consistency of the casting quality of each mold cavity 4 and reducing defects caused by different filling sequences.

[0013] In this specific embodiment, the branch flow channel 6 includes a main body 61 and branch sections 62, the same number as the mold cavities 4. The main body 61 is connected to the main flow channel 5, and the branch sections 62 connect the corresponding mold cavities 4 to the main body 61. Clearly dividing the branch flow channel 6 into "main body 61" and "branch sections 62" is equivalent to establishing a two-stage distribution system for flow collection and distribution. The molten metal from the main flow channel 5 first enters the "main body 61" for collection and initial distribution, and then is precisely introduced into each mold cavity 4 through each "branch section 62". This structure makes the flow of molten metal more orderly, facilitating the optimization of flow channel dimensions and control of filling speed and pressure transmission through simulation analysis. The clear structural division makes the processing of the flow channel system easier to program and implement. Furthermore, if flow channel blockage or wear occurs during production, it is easier to repair and correct specific "main body 61" or "branch sections 62", resulting in better maintainability.

[0014] In this specific embodiment, branch 62 is a straight-flow channel. The straight-flow channel provides the molten metal with the most direct and least-resistance flow path, effectively reducing heat loss (temperature drop) and pressure loss during the flow process. In squeeze casting, effective pressure transmission is crucial. Using a straight-flow channel allows for more efficient transmission of extrusion pressure from the pressure chamber to the end of the mold cavity 4, ensuring that the casting solidifies under high pressure, resulting in a casting with a dense structure and excellent mechanical properties.

Claims

1. An extrusion casting mold, comprising a mold body, the mold body including a fixed mold core and a movable mold core, the movable mold core and the fixed mold core being joined to form a cavity and a runner, a slider being disposed within the cavity, and a plurality of mold cavities being formed between the inner wall of the movable mold core, the inner wall of the fixed mold core, and the slider, characterized in that... The flow channel includes a main flow channel with a gate and branch flow channels for connecting the main flow channel with each of the mold cavities. The flow direction of the molten casting in the main flow channel is consistent with the opening and closing direction of the moving mold core, so that the main flow channel forms a vertical flow channel and the branch flow channels are horizontal flow channels.

2. The extrusion casting mold as described in claim 1, characterized in that... The plurality of the aforementioned mold cavities are arranged around the outside of the branch flow channel.

3. The extrusion casting mold as described in claim 1, characterized in that... The branch flow channel includes a main body and branch sections in the same number as the mold cavities. The main body is connected to the main flow channel, and the branch sections are used to connect the corresponding mold cavities to the main body.

4. The extrusion casting mold as described in claim 1, characterized in that... The branch section is a horizontal direct current channel.

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