A bridged side mold water cooling structure

Abstract

The utility model relates to aluminum alloy wheel hub manufacturing technical field, and disclose a kind of bridging side mould water cooling structure, it includes side mould body, and corresponding spoke part is provided with split insert on side mould body, split insert includes the cooling part of the plug-in cooperation with side mould body, and the connecting part of being set at insert body outside, inlet and outlet are provided on connecting part, cooling water channel is opened in split insert, and adjacent split insert is communicated each other by bridging pipeline between split insert. The utility model uses split insert bridge structure, and cooling effect is accurately focused on spoke root target area, effectively avoid the excessive cooling of traditional annular water channel to rim and other non-target area, significantly reduce the incidence of surface defects such as cold insulation, insufficient pouring and rim shrinkage defect, improve casting quality pass rate;Meanwhile, split design reduces water channel processing area, reduces processing complexity and welding difficulty, reduces the risk of water leakage, and guarantees engineering reliability.

Description

Technical Field

[0001] This utility model relates to the field of aluminum alloy wheel hub manufacturing technology, and in particular to a bridging side mold water-cooling structure. Background Technology

[0002] In the low-pressure casting process of aluminum alloy wheels, cooling of the mold and castings typically relies on a cooling structure located inside the mold. This cooling structure is a nearly quarter-circular water channel, which uses a large annular surface as the primary cooling method, resulting in high heat exchange intensity and cooling efficiency. However, this traditional water-cooling structure has revealed the following problems in practical applications: First, the traditional cooling structure uses a nearly quarter-circular water channel, whose cooling area not only covers the target cooling area (the base of the spokes) but also affects the surrounding non-target areas. Due to the strong heat transfer characteristics of water, the non-target areas are prone to temperature field disturbances due to over-cooling, resulting in casting defects such as cold shuts and incomplete pouring at the strongly cooled locations. At the same time, the cooled window cannot effectively compensate for shrinkage at the rim, making the rim prone to shrinkage porosity defects and reducing the forming quality of the casting. Second, the traditional cooling structure requires large-area machining, which is difficult to machine and weld. It is very easy for leakage problems to occur due to welding failure or cracking. Moreover, because the water channel is located inside the mold, the leakage point is highly concealed and difficult to detect in the early stages of the fault. Once a leakage occurs, it will not only interrupt production but also significantly increase production costs and downtime due to the complexity and difficulty of the repair process. Therefore, developing a new type of side mold cooling structure is an urgent problem to be solved. Utility Model Content

[0003] The purpose of this invention is to address the above-mentioned problems by providing a bridging side mold water-cooling structure, which solves the problems that traditional cooling structures cannot guarantee the stability of casting quality, have high engineering risks, and are difficult to meet the needs of efficient and high-quality production.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: A bridging-type side mold water-cooling structure includes a side mold body. A split insert is provided on the side mold body corresponding to the spoke portion. The split insert includes a cooling part that is inserted and fitted into the side mold body, and a connecting part provided on the outside of the insert body. The connecting part is provided with a water inlet and a water outlet. A cooling water channel connecting the water inlet and the water outlet is opened in the split insert. Adjacent split inserts are connected to each other through bridging pipes.

[0005] Preferably, the length of the split insert ranges from 80 to 120 mm, the width ranges from 50 to 80 mm, and the height ranges from 60 to 100 mm.

[0006] Preferably, the side mold body has interlocking holes spaced apart at the root of the spokes, and the cooling part of the split insert is inserted into the interlocking holes.

[0007] Preferably, an assembly stop is provided in the mounting hole, and an assembly boss is provided on the split insert corresponding to the assembly stop, with the assembly boss and the assembly stop being clearance-fitted.

[0008] Preferably, the clearance between the split insert and the mold body on one side is 0.1-0.2 mm.

[0009] Preferably, the cooling water channel is provided with heat exchange fins to increase the heat exchange area of ​​the split insert and improve the cooling efficiency. The heat exchange fins are thin sheet structures that are spaced apart on the inner wall of the cooling water channel.

[0010] The beneficial effects of this utility model are as follows: This invention employs a split-type insert bridging structure, precisely focusing the cooling effect on the target area at the root of the spokes. This effectively avoids overcooling of non-target areas such as the rim by traditional annular water channels, maintaining sufficient rim temperature to perform its shrinkage compensation function. This significantly reduces the incidence of surface defects such as cold shuts and incomplete filling, as well as rim shrinkage defects, greatly improving the casting quality pass rate. Simultaneously, the split design significantly reduces the processing area of ​​the water channel, lowering processing complexity and welding difficulty, thus reducing the risk of leakage at its source. The modular structure allows the cooling system to be decomposed into independent inserts and connecting pipes, facilitating rapid location of leaks and enabling repairs without large-scale disassembly of the side molds, significantly shortening troubleshooting time and reducing unplanned downtime losses. Furthermore, the insert size can be flexibly adapted to different spoke specifications, the assembly gap design effectively avoids aluminum leakage, and the addition of heat exchange fins further improves heat exchange efficiency by 15%-20%, shortening the molding cycle, comprehensively reducing production costs, and improving production stability and economy. Attached Figure Description

[0011] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0012] Figure 1 This is a front structural diagram of the present invention.

[0013] Figure 2 This is a schematic diagram of the rear structure of this utility model.

[0014] Figure 3 This is a schematic diagram of the structure of the split insert in this utility model.

[0015] Figure 4 This is a cross-sectional view of the modular insert.

[0016] In the diagram: 10--Side mold body; 11--Insertion hole; 12--Assembly stop; 20--Separate insert; 21--Cooling section; 22--Connecting section; 221--Water inlet; 222--Water outlet; 23--Cooling water channel; 24--Bridging pipe; 25--Assembly boss; 26--Heat exchange fins. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0018] like Figure 1-4 As shown, a bridging-type side mold water-cooling structure includes a side mold body 10. A split insert 20 is provided on the side mold body 10 corresponding to the spoke portion. The split insert 20 includes a cooling part 21 that is inserted and fitted into the side mold body 10, and a connecting part 22 provided on the outside of the insert body. The connecting part 22 is provided with an inlet 221 and an outlet 222. A cooling water channel 23 is opened in the split insert 20 to connect the inlet 221 and the outlet 222. Adjacent split inserts 20 are connected to each other through a bridging pipe 24 to form a complete cooling circuit.

[0019] During operation, cooling water enters through the inlet 221 of one of the split inserts 20, flows through the cooling water channel 23 inside the insert, cools the spoke root at the corresponding position, and then flows out through the outlet 222. It then flows through the bridging pipe 24 into the water channel of another split insert 20 to continue cooling the spoke root at that position, finally exiting from the outlet of the other insert, forming a cooling cycle. In this embodiment, the split insert 20 only acts on the target spoke area, avoiding excessive cooling of non-target areas such as the rim by traditional large-area annular cooling. This allows the rim to maintain a sufficient temperature, effectively fulfilling its shrinkage compensation function and reducing the occurrence of rim shrinkage defects. Simultaneously, precise cooling control prevents excessively low local temperatures in the mold, reducing the incidence of surface defects such as cold shuts and incomplete filling. Moreover, the relatively small size and structure of the modular inserts significantly reduce the surface area for water channel processing, lowering the processing difficulty and eliminating the need for large-area complex machining. The reduced number of welding points lowers the welding difficulty and the requirements for welding quality, fundamentally reducing the risk of leakage due to welding failure or cracking. In the event of a leak, because the cooling system is decomposed into independent insert modules and connecting water pipes, maintenance personnel can quickly disassemble and inspect each part without extensively disassembling the entire side mold body 10. This allows for quick and accurate location of the leak point (such as inside a specific insert or at a water pipe connection), greatly simplifying the maintenance process, improving maintenance efficiency, and reducing production downtime caused by malfunctions.

[0020] Preferably, the length of the split insert 20 ranges from 80-120mm, the width ranges from 50-80mm, and the height ranges from 60-100mm. The specific dimensions can be adapted and adjusted according to the actual dimensions of the target wheel spokes, with the optimal dimensions being a length of 100mm, a width of 65mm, and a height of 80mm. The smaller size facilitates the processing and manufacturing of the split insert 20, makes it easier to disassemble and maintain, reduces the manufacturing and maintenance costs of the cooling system, and allows for more precise matching of wheel spoke dimensions for different specifications, improving cooling targeting.

[0021] Preferably, the side mold body 10 has spaced-apart insert holes 11 corresponding to the root of the spokes, and the cooling part 21 of the split insert 20 is inserted into the insert holes 11. Preferably, the insert holes 11 have assembly stops 12, and the split insert 20 has an assembly boss 25 corresponding to the assembly stops 12. The assembly boss 25 and the assembly stops 12 are clearance-fitted to achieve positioning and assembly of the split insert 20 and the mold body. Preferably, the clearance between the split insert 20 and the mold body on one side is 0.1-0.2mm, which ensures assembly accuracy while facilitating disassembly and assembly operations, and avoids aluminum leakage, further improving the stability and safety of mold operation.

[0022] Preferably, heat exchange fins 26 are provided within the cooling water channel 23 to increase the heat exchange area of ​​the split insert 20 and improve cooling efficiency. The heat exchange fins 26 are thin sheet structures spaced apart on the inner wall of the cooling water channel 23. After entering the cooling water channel 23, the cooling water comes into contact with the heat exchange fins 26, carrying away the heat conducted from the spoke root to the heat exchange fins 26, thus achieving efficient cooling of the spoke root. The design of the heat exchange fins 26, while ensuring precise cooling, can increase the heat exchange efficiency of a single-unit split insert 20 by 15%-20%, further shortening the casting cycle.

[0023] The above-disclosed embodiments are merely specific examples of this utility model, but this utility model is not limited thereto. For those skilled in the art, any modifications made without departing from the principle of this utility model should be considered as protected by this utility model.

Claims

1. A bridging-type side mold water-cooling structure, characterized in that: The device includes a side mold body (10), on which a split insert (20) is provided corresponding to the spoke portion. The split insert (20) includes a cooling part (21) that is inserted into the side mold body (10) and a connecting part (22) provided on the outside of the insert body. The connecting part (22) is provided with an inlet (221) and an outlet (222). A cooling water channel (23) connecting the inlet (221) and the outlet (222) is provided in the split insert (20). Adjacent split inserts (20) are connected to each other through a bridge pipe (24).

2. The bridging side mold water-cooling structure according to claim 1, characterized in that: The length of the split insert (20) ranges from 80 to 120 mm, the width ranges from 50 to 80 mm, and the height ranges from 60 to 100 mm.

3. The bridging side mold water-cooling structure according to claim 1, characterized in that: The side mold body (10) has intermittently distributed mounting holes (11) at the root of the spokes, and the cooling part (21) of the split insert (20) is inserted into the mounting hole (11).

4. The bridging side mold water-cooling structure according to claim 3, characterized in that: An assembly stop (12) is provided in the mounting hole (11), and an assembly boss (25) is provided on the split insert (20) corresponding to the assembly stop (12). The assembly boss (25) and the assembly stop (12) are in clearance fit.

5. The bridging side mold water-cooling structure according to claim 4, characterized in that: The clearance between the split insert (20) and the mold body on one side is 0.1-0.2mm.

6. The bridging side mold water-cooling structure according to claim 1, characterized in that: The cooling water channel (23) is provided with heat exchange fins (26), which are thin sheet structures spaced on the inner wall of the cooling water channel (23).

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