End plate die-casting runner structure

Abstract

The utility model belongs to die casting die technical field, concretely relates to a end plate die casting runner structure. The end plate die casting runner structure of the utility model includes: main runner, its lower end is connected with material cake, and the middle part of upper end is provided with the main gate connected with the lower end surface of product cavity, two auxiliary runners are respectively arranged in the both sides of product cavity, and the lower end of two auxiliary runners is connected with the both sides of the upper part of main runner respectively, and the upper end is provided with the auxiliary gate respectively used for connecting with the both sides of the upper part of product cavity. The end plate die casting runner structure of the utility model is optimized on the existing runner scheme, increases both sides auxiliary runner, can effectively guarantee the filling rate of material to the auxiliary filling of the end of product cavity, and can effectively supplement the end in the pressurization stage, reduces the shrinkage hole of product end, and increases product yield.

Description

Technical Field

[0001] This utility model belongs to the field of die casting mold technology, specifically relating to an end plate die casting gating structure. Background Technology

[0002] In power battery modules, the end plate is an indispensable and crucial component. It not only provides pre-tightening force to the battery cells but also withstands the impact of expansion forces. Aluminum alloys, with their low density, high strength, and strong corrosion resistance, are a common choice for cost reduction and weight reduction in modules. Among them, die-cast aluminum end plates can be formed in one piece, allowing for the design of complex structures such as output stage base fixing holes, lifting holes, and weight-reduction grooves, eliminating the need for subsequent splicing. They also offer high dimensional accuracy, making them suitable for module applications with new types of batteries.

[0003] See Figure 1 End plate products have numerous ribs on their surface, with horizontal and vertical ribs forming small square frames. These ribs effectively increase the product's mechanical properties; however, due to their thick walls, conventional die casting results in numerous pores, poor filling, and under-casting. Therefore, these products typically use ultra-low speed die casting. However, due to the low filling speed of ultra-low speed die casting, the pressure from the main flow channel cannot be effectively transmitted to the end of the product during the bottom-up filling process, leading to uneven molten aluminum filling. Furthermore, during the filling process, the molten aluminum at the front end is highly likely to cool prematurely, resulting in oxide layers and poor filling at the end. Utility Model Content

[0004] The purpose of this invention is to provide an end plate die casting gating structure to solve the technical problem of uneven material filling during the end plate die casting process in the prior art.

[0005] This application provides an end plate die casting gating structure, which includes: The main channel is connected to the material cake at its lower end, and the main gate is provided in the middle of its upper end, which is connected to the lower end face of the product cavity. Two auxiliary runners are respectively located on both sides of the product cavity; the lower ends of the two auxiliary runners are respectively connected to the upper sides of the main runner, and the upper ends are provided with auxiliary gates for connecting to the upper sides of the product cavity.

[0006] In one embodiment of this application, the auxiliary flow channel includes several levels of flow channels; the cross-sectional area of ​​each level of flow channel decreases progressively along the filling direction.

[0007] In one embodiment of this application, the cross-sectional area ratio of the upper-level flow channel to the lower-level flow channel is less than 1.3:1.

[0008] In one embodiment of this application, the auxiliary flow channel includes a first-stage flow channel, a second-stage flow channel, and a third-stage flow channel connected sequentially along the auxiliary gate towards the main flow channel; The cross-sectional area ratio of the second-stage flow channel to the first-stage flow channel is 1.28:1; The cross-sectional area ratio of the third-stage flow channel to the second-stage flow channel is 1.25:1.

[0009] In one embodiment of this application, the ratio of the cross-sectional area of ​​the material cake to the sum of the areas of the main gate and the two auxiliary gates is less than 3:1.

[0010] In one embodiment of this application, the ratio of the cross-sectional area of ​​the material cake to the sum of the areas of the main gate and the two auxiliary gates is 2.8:1.

[0011] In one embodiment of this application, the ratio of the cross-sectional area of ​​the main channel to the cross-sectional area of ​​the material cake is 1:2.3.

[0012] In one embodiment of this application, the ratio of the cross-sectional area of ​​the main gate to the cross-sectional area of ​​the main runner is 1:1.3.

[0013] In one embodiment of this application, a buffer platform is also provided between the main channel and the material cake.

[0014] In one embodiment of this application, the thickness of the auxiliary flow channel is not less than 8 mm.

[0015] The beneficial effects of this utility model are: Unlike existing technologies, this application provides an end-plate die-casting gating structure, comprising: a main runner, the lower end of which is connected to the material cake, and a main gate connected to the lower end face of the product cavity at the middle of the upper end; two auxiliary runners, respectively disposed on both sides of the product cavity; the lower ends of the two auxiliary runners are respectively connected to the upper sides of the main runner, and the upper ends are respectively provided with auxiliary gates for connecting to the upper sides of the product cavity. This utility model's end-plate die-casting gating structure optimizes existing runner schemes by adding auxiliary runners on both sides to assist in filling the end of the product cavity, effectively ensuring the material filling rate; furthermore, during the pressurization stage, it can effectively compensate for shrinkage at the end, reducing shrinkage cavities at the product end and increasing product yield.

[0016] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention are realized and obtained through the structures particularly pointed out in the description and the accompanying drawings.

[0017] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 It is a flow channel structure based on existing technology; Figure 2 This is a schematic diagram of the end plate die-casting gating structure of a preferred embodiment of the present invention; Figure 3 This is a perspective view of the end plate die-casting gating structure of a preferred embodiment of the present invention; Figure 4 This is a front view of the end plate die-casting gating structure of a preferred embodiment of the present invention; Figure 5 yes Figure 4 Cross-sectional views of each section.

[0020] In the picture: Main runner 1, main gate 10, material cake 2, product cavity 3, auxiliary runner 4, auxiliary gate 40, first-stage runner 41, second-stage runner 42, third-stage runner 43, buffer platform 5. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0022] This application provides an end plate die-casting gating structure, which will be described in detail below. It should be noted that the order of description of the following embodiments is not intended to limit the preferred order of the embodiments of this application. Furthermore, in the following embodiments, the descriptions of each embodiment have their own emphasis; parts not described in detail in a certain embodiment can be referred to in the relevant descriptions of other embodiments.

[0023] See Figure 1 and Figure 2 In one embodiment, the end plate die-casting gating structure includes: Main channel 1, its lower end is connected to material cake 2, and the middle of its upper end is provided with main gate 10 connected to the lower end face of product cavity 3; Two auxiliary flow channels 4 are respectively set on both sides of the product cavity 3; the lower ends of the two auxiliary flow channels 4 are respectively connected to the upper sides of the main flow channel 1, and the upper ends are provided with auxiliary gates 40 for connecting to the upper sides of the product cavity 3.

[0024] In this embodiment, by adding auxiliary flow channels 4 on both sides to assist in filling the end of the product cavity 3, the material filling rate can be effectively guaranteed; and during the pressurization stage, it can effectively compensate for shrinkage at the end, reduce shrinkage cavities at the end of the product, and increase product yield.

[0025] Furthermore, the auxiliary flow channel 4 includes several stages of flow channels; the cross-sectional area of ​​each stage of the flow channel decreases progressively along the filling direction. The progressively decreasing cross-sectional area ratio of the auxiliary flow channels ensures that there is no pressure loss during the filling process, effectively filling and compensating for the product ends, and reducing product defects.

[0026] Optionally, the cross-sectional area ratio of the upper-level flow channel to the lower-level flow channel is less than 1.3:1.

[0027] In one embodiment, see Figures 2 to 5 The auxiliary flow channel 4 includes a first-stage flow channel 41, a second-stage flow channel 42, and a third-stage flow channel 43 connected sequentially along the auxiliary gate 40 toward the main flow channel 1. That is, along the filling direction, it is divided into a third-stage flow channel 43, a second-stage flow channel 42, and a first-stage flow channel 41 from the upper to the lower level. Optionally, the cross-sectional area ratio of the second-stage flow channel 42 to the first-stage flow channel 41 is 1.28:1, and the cross-sectional area ratio of the third-stage flow channel 43 to the second-stage flow channel 42 is 1.25:1.

[0028] Of course, in other embodiments, the number of stages of the auxiliary flow channel 4 can also be other values, and the cross-sectional area ratio of the lower flow channel to the upper flow channel is not limited to the above values. It can be considered according to factors such as the specific product model and the filling material.

[0029] In this embodiment, for products manufactured at ultra-low speeds, the runners and gates are much thicker than conventional runners due to the thicker wall thickness. Optionally, the ratio of the cross-sectional area of ​​the material cake 2 to the sum of the gate areas (i.e., the sum of the areas of the main gate 10 and the two auxiliary gates 40) is less than 3:1.

[0030] Optional, see Figure 5 In one embodiment, the ratio of the cross-sectional area of ​​the material cake 2 to the sum of the areas of the main gate 10 and the two auxiliary gates 40 is 2.8:1.

[0031] Furthermore, the ratio of the cross-sectional area of ​​the main channel 1 to the cross-sectional area of ​​the material cake 2 is 1:2.3.

[0032] Furthermore, the ratio of the cross-sectional area of ​​the main gate 10 to the cross-sectional area of ​​the main runner 1 is 1:1.3.

[0033] Furthermore, a buffer platform 5 is provided between the main channel 1 and the material cake 2.

[0034] Furthermore, in one embodiment, since the filling speed of the ultra-low speed process is extremely low, the aluminum liquid flows slowly, which will inevitably lead to a large heat loss. Therefore, the thickness of the auxiliary flow channel needs to be thick enough to ensure that the temperature of the aluminum liquid is still above the melting point when it reaches the end. In this embodiment, optionally, the thickness of the auxiliary flow channel 4 is always ensured to be above 8mm.

[0035] It should be noted that all the devices (parts whose specific structures are not specified) selected in this application are general standard parts or parts known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or conventional experimental methods.

[0036] In the description of the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation", "connection" and "linking" should be interpreted broadly, for example, they can be fixed connections, detachable connections, or integral connections.

[0037] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0038] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification.

Claims

1. An end plate die-casting gate structure, characterized by, include: The main channel (1) is connected to the material cake (2) at its lower end, and the middle of the upper end is provided with a main gate (10) connected to the lower end face of the product cavity (3). Two auxiliary flow channels (4) are respectively set on both sides of the product cavity (3); the lower ends of the two auxiliary flow channels (4) are respectively connected to the upper sides of the main flow channel (1), and the upper ends are respectively provided with auxiliary gates (40) for connecting to the upper sides of the product cavity (3).

2. The end plate die-casting gating structure according to claim 1, characterized in that, The auxiliary flow channel (4) includes several stages of flow channels; The cross-sectional area of ​​each flow channel decreases progressively along the filling direction.

3. The end plate die-casting gating structure according to claim 2, characterized in that, The ratio of the cross-sectional area of ​​the upper flow channel to that of the lower flow channel is less than 1.3:

1.

4. The end plate die-casting gating structure according to claim 2, characterized in that, The auxiliary flow channel (4) includes a first-stage flow channel (41), a second-stage flow channel (42), and a third-stage flow channel (43) connected sequentially along the auxiliary gate (40) toward the main flow channel (1). The cross-sectional area ratio of the second-stage flow channel (42) to the first-stage flow channel (41) is 1.28:1; The cross-sectional area ratio of the third-stage flow channel (43) to the second-stage flow channel (42) is 1.25:

1.

5. The end plate die-casting gating structure according to claim 1, characterized in that, The ratio of the cross-sectional area of ​​the material cake (2) to the sum of the areas of the main gate (10) and the two auxiliary gates (40) is less than 3:

1.

6. The end plate die-casting gating structure according to claim 1, characterized in that, The ratio of the cross-sectional area of ​​the material cake (2) to the sum of the areas of the main gate (10) and the two auxiliary gates (40) is 2.8:

1.

7. The end plate die-casting gating structure according to claim 1, characterized in that, The ratio of the cross-sectional area of ​​the main channel (1) to the cross-sectional area of ​​the material cake (2) is 1:2.

3.

8. The end plate die-casting gating structure according to claim 1, characterized in that, The ratio of the cross-sectional area of ​​the main gate (10) to the cross-sectional area of ​​the main runner (1) is 1:1.

3.

9. The end plate die-casting gating structure according to claim 1, characterized in that, A buffer platform (5) is also provided between the main channel (1) and the cake (2).

10. The end plate die-casting gating structure according to claim 2, characterized in that, The thickness of the auxiliary flow channel (4) is not less than 8 mm.

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