Automobile PTC (Positive Temperature Coefficient) aluminum shell die-casting structure capable of improving liquid flow filling

Abstract

The utility model is applicable to the technical field of new energy PTC (Positive Temperature Coefficient) aluminum shell products, and provides an automobile PTC aluminum shell die-casting structure capable of improving liquid flow filling, which comprises a base, a fixed shell part is arranged on one side of the base, and two groups of second island parts are arranged at the top end of the fixed shell part; the fixed shell part comprises a shell, and a plurality of groups of first islands are arranged at the top of the shell; the second island part comprises an island column, a feces flow guide is arranged at the top of the island column, ribs are symmetrically arranged on the two sides of the island column, and the ribs are flush with the end, away from the feces flow guide, of the island column. The device solves the problems that feeding of an independent cavity is not smooth in the die-casting molten aluminum filling process, air trapping of an island is prone to being caused, design and molding cost can be increased when a pouring system is improved, an exhaust device needs to be added when an exhaust system is enhanced, and the functions of reducing design cost, reducing production cost, improving the resource utilization rate and improving heating efficiency are achieved.

Description

Technical Field

[0001] This utility model relates to the technical field of new energy PTC aluminum shell products, and more specifically, it relates to a die-cast structure for automotive PTC aluminum shells that can improve liquid flow rate filling. Background Art

[0002] New energy PTC aluminum shell products have high requirements for airtightness and have complex structures with many independent cavities with large surface differences. During the filling process of die-cast aluminum liquid, the feeding of independent cavities is not smooth, which can easily lead to air entrapment in isolated islands.

[0003] Currently, the main approach is to adjust the shape and size of the gating system to better facilitate the flow of molten aluminum and the venting of gases. Using a larger gating diameter can reduce the flow rate of the molten aluminum, decrease turbulence, and thus reduce gas generation. Alternatively, venting channels and vents can be added near the islands to allow for the timely removal of trapped gases. The depth and width of the venting channels should be rationally designed according to the size and shape of the islands to ensure smooth gas escape. However, improving the gating system increases design and mold-making costs, and enhancing the venting system requires additional venting devices, which can easily create new problems, such as molten aluminum overflowing from the venting device locations.

[0004] Therefore, a die-cast structure for automotive PTC aluminum shells that can improve liquid flow rate filling is proposed, thereby reducing design costs, production costs, resource utilization, and heating efficiency. Utility Model Content

[0005] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a die-cast structure for automotive PTC aluminum shells that can increase liquid flow rate filling, thereby reducing design costs, production costs, resource utilization, and heating efficiency.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A die-cast structure for an automotive PTC aluminum housing that can improve liquid flow rate filling includes a base, a fixed outer shell portion on one side of the base, and two sets of second island portions at the top of the fixed outer shell portion; the fixed outer shell portion includes a housing, and multiple sets of first islands are provided on the top of the housing; the second island portion includes an island pillar, a flow guide is provided on the top of the island pillar, and ribs are symmetrically arranged on both sides of the island pillar, with the ribs flush with the end of the island pillar away from the flow guide.

[0008] The present invention is further configured such that: the first island is a hollow structure with a closed top, and the height of the first island is greater than that of the shell.

[0009] The present invention is further configured such that: a central island is provided on the central axis of the housing, and the height of the central island is the same as that of the housing.

[0010] The present invention is further configured such that: a water channel is provided at the top of the shell, and the water channel is adapted to the shape of the central island and multiple sets of first islands.

[0011] By adopting the above technical solution, the multiple sets of first islands set on the shell provide an environment for product heat dissipation. The central island works with the water channel to guide the flow of heat dissipation water. The water flowing in the water channel can absorb the heat of the first island, thereby improving the overall heating capacity.

[0012] The present invention is further configured such that: the isolated column is a hollow conical structure with a platform at the top, and the height of the ribs is lower than that of the isolated column.

[0013] The present invention is further configured such that: a rib guide is provided at the top of the rib, a rib flow groove is provided between the rib and the island column, and two sets of rib outward flow grooves are provided on the side of the rib away from the island column.

[0014] By adopting the above technical solution, the flow resistance of water passing through the waterway is required. Adjusting the island pillars improves the flow resistance of the product. Adding ribs at the island pillar positions along the water flow direction increases the flow rate of molten aluminum to fill the ribs. When the molten aluminum is injected into the mold, it forms a flow guide, a rib guide, a rib flow channel, and a rib outflow channel, reducing right-angle inflow. This can improve the efficiency of injection molding and reduce the problem of trapped air during injection.

[0015] In summary, this application includes at least one of the following beneficial technical effects:

[0016] 1. Multiple sets of first islands set on the shell provide an environment for product heat dissipation. The central island works with the water channel to guide the flow of heat dissipation water. The water flowing in the water channel can absorb the heat of the first island and improve the overall heating capacity.

[0017] 2. Water experiences flow resistance when flowing through the waterway. Adjusting the island pillars improves this flow resistance. Adding ribs along the water flow direction at the island pillar positions increases the flow rate of molten aluminum into the ribs. During injection molding, this creates flow guides, rib guides, rib flow channels, and rib outflow channels, reducing right-angle inflow. This improves injection molding efficiency and reduces air entrapment issues during injection. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the automotive PTC aluminum shell die-casting structure that can improve liquid flow rate filling according to this utility model.

[0019] Figure 2 This is a top view of the present invention.

[0020] Figure 3 This is a schematic diagram of the structure of the second island section in this utility model.

[0021] Explanation of reference numerals in the attached diagram: 1. Base;

[0022] 2. Fixed outer shell; 21. Shell; 22. First island; 23. Central island; 24. Waterway;

[0023] 3. Second island section; 31. Island column; 32. Flow guide; 33. Rib; 34. Rib guide; 35. Rib flow channel; 36. Rib external flow channel. DETAILED DESCRIPTION

[0024] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0025] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0026] Example 1, please refer to Figure 1-3 The present invention provides the following technical solution:

[0027] Specifically, it refers to a die-cast structure for automotive PTC aluminum housings that can improve liquid flow rate during filling. (See also...) Figure 1 It includes a base 1, which provides support and installation environment for the product as a whole. A fixed outer shell 2 is provided on one side of the base 1. The fixed outer shell 2 improves the overall heating capacity of the product. Two sets of second islands 3 are provided at the top of the fixed outer shell 2. The second islands 3 facilitate the production and manufacturing of the product and improve the problem of air trapping in the product.

[0028] See Figure 1-2 The fixed outer shell 2 includes a shell 21, and a plurality of first islands 22 are provided on the top of the shell 21. The first islands 22 are hollow structures with closed tops, and the height of the first islands 22 is greater than that of the shell 21. A central island 23 is provided on the central axis of the shell 21, and the height of the central island 23 is the same as that of the shell 21. A water channel 24 is provided at the top of the shell 21, and the shape of the water channel 24 is adapted to the central island 23 and the plurality of first islands 22.

[0029] Specifically, multiple sets of first islands 22 set on the shell 21 provide an environment for product heat dissipation. The central island 23 and the water channel 24 work together to guide the flow of heat dissipation water. The water flowing in the water channel 24 can absorb the heat of the first islands 22 and improve the overall heating capacity.

[0030] See Figure 3The second island section 3 includes an island pillar 31. A flow guide 32 is provided at the top of the island pillar 31. Ribs 33 are symmetrically arranged on both sides of the island pillar 31, with the ribs 33 flush with the end of the island pillar 31 furthest from the flow guide 32. The island pillar 31 is a hollow conical structure with a platform at the top, and the height of the ribs 33 is lower than that of the island pillar 31. A rib guide 34 is provided at the top of the ribs 33, and a rib flow channel 35 is provided between the ribs 33 and the island pillar 31. Two sets of external rib flow channels 36 are provided on the side of the ribs 33 furthest from the island pillar 31.

[0031] Specifically, water faces flow resistance requirements when flowing through waterway 24. Adjusting the island column 31 improves this flow resistance. Ribs 33 are added at the island column 31 along the water flow direction to increase the flow rate of molten aluminum into the ribs 33. During injection molding, these ribs form a flow guide 32, a rib guide 34, a rib flow channel 35, and a rib outward flow channel 36, reducing right-angle inflow. This improves injection molding efficiency and reduces air entrapment during injection.

[0032] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

Claims

1. A die-cast structure for automotive PTC aluminum housing that can improve liquid flow rate filling, characterized in that: Includes a base (1), a fixed outer shell part (2) is provided on one side of the base (1), and two sets of second island parts (3) are provided on the top of the fixed outer shell part (2); The fixed outer shell (2) includes a shell (21), and the top of the shell (21) is provided with a plurality of first islands (22); The second island section (3) includes an island column (31), the top of which is provided with a waste flow guide (32), and the island column (31) is symmetrically provided with ribs (33) on both sides, the ribs (33) being flush with the end of the island column (31) away from the waste flow guide (32).

2. The automotive PTC aluminum housing die-casting structure for improving liquid flow rate filling according to claim 1, characterized in that: The first island (22) is configured as a hollow structure with a closed top, and the height of the first island (22) is greater than that of the shell (21).

3. The automotive PTC aluminum housing die-casting structure for improved liquid flow rate filling according to claim 2, characterized in that: A central island (23) is provided on the central axis of the shell (21), and the height of the central island (23) is the same as that of the shell (21).

4. The automotive PTC aluminum housing die-casting structure for improved liquid flow rate filling according to claim 3, characterized in that: The top of the shell (21) is provided with a water channel (24), which is adapted to the shape of the central island (23) and multiple sets of first islands (22).

5. The automotive PTC aluminum housing die-casting structure for improved liquid flow rate filling according to claim 1, characterized in that: The isolated column (31) is configured as a hollow conical structure with a platform at the top, and the ribs (33) are set at a height lower than the isolated column (31).

6. The automotive PTC aluminum housing die-casting structure for improved liquid flow rate filling according to claim 5, characterized in that: The top of the rib (33) is provided with a rib guide. To (34), a rib flow channel (35) is provided between the rib (33) and the island column (31). Two sets of outward flow grooves (36) are provided on the side of the rib (33) away from the island column (31).

Images