A new type of aluminum alloy wheel hub mold lower mold

Abstract

A novel aluminum alloy wheel hub mold lower mold includes a lower mold, a water-cooling block, a water-cooling plate, a partition plate, a pressure plate, and bolts. During assembly, the partition plate and pressure plate are first placed sequentially into the sealing groove of the water-cooling plate, with water inlet hole one corresponding to water inlet hole two, and water outlet hole one corresponding to water outlet hole two. They are then fixed by welding. Simultaneously, the water-cooling block is installed onto the lower mold, with its head corresponding to its mating groove. The assembled water-cooling plate is then placed into an annular groove and pressed onto the water-cooling block. The through holes on the water-cooling plate correspond to the bolt holes on the lower mold. Finally, it is fixed with bolts. This design achieves rapid temperature reduction at hot spots and reduces casting defects in other locations. The structure is simple and easy to operate, significantly improving production efficiency and yield, thereby reducing the manufacturing cost of the wheel hub.

Description

Technical Field

[0001] This utility model belongs to the field of low-pressure casting mold design, and in particular relates to a novel lower mold for aluminum alloy wheel hubs. Background Technology

[0002] With the increasing demand for aluminum alloy wheels, wheel manufacturers are striving to improve production efficiency. Cooling methods for casting molds are gradually shifting from air cooling to water cooling. Air cooling uses compressed air, which cannot be recycled, while water cooling uses water that can be directly recycled and reused, thus achieving energy savings. Alternatively, new cooling structures and materials are used to improve cooling efficiency and increase production output. For areas of concentrated heat in the lower mold, point-source water cooling or a single water-cooling plate is typically used. This design effectively reduces the mold temperature and meets the cooling requirements of the casting process. However, the cooling process is difficult to control at these hot spots, which may lead to casting defects in other parts of the wheel, such as incomplete filling or porosity.

[0003] Therefore, a new type of aluminum alloy wheel hub mold lower die is needed, which can quickly reduce the temperature at the hot spot and reduce the occurrence of casting defects in other locations, meet the requirements of the production process, has a simple structure, is easy to operate, improves production efficiency and yield, and thus reduces the production and manufacturing cost of wheel hubs. Utility Model Content

[0004] The purpose of this invention is to provide a new type of aluminum alloy wheel hub mold lower mold to replace the original water-cooled structure, improve the cooling efficiency of water cooling, reduce the generation of casting waste, and thus reduce the production cost of wheel hubs.

[0005] This utility model is implemented as follows:

[0006] A novel aluminum alloy wheel hub mold lower mold includes a lower mold, a water-cooling block, a water-cooling plate, a partition plate, a pressure plate, and bolts. The lower mold is provided with an annular groove, a water-cooling block mating groove, and bolt holes. The water-cooling block mating groove corresponds to the position where cooling needs to be increased. The water-cooling block is provided with a water-cooling block head and a water-cooling block tail. The water-cooling plate is provided with water channels, a sealing groove, a chamfer, and a through hole. The partition plate is provided with a water inlet hole and a water outlet hole, and the pressure plate is provided with a second water inlet hole and a second water outlet hole.

[0007] During assembly, first place the partition plate and pressure plate into the sealing groove of the water cooling plate in sequence, with water inlet hole one corresponding to water inlet hole two and water outlet hole one corresponding to water outlet hole two. Fix them by welding. At the same time, install the water cooling block onto the lower mold, with the head of the water cooling block corresponding to the mating groove of the water cooling block. Then place the assembled water cooling plate into the annular groove and press it onto the water cooling block. The through holes on the water cooling plate correspond to the bolt holes on the lower mold. Finally, fix it with bolts.

[0008] Furthermore, depending on the cooling requirements, the water-cooling block can be made of copper, which has better thermal conductivity. The head of the water-cooling block and the groove of the water-cooling block are interference fit. The size of the tail of the water-cooling block should be larger than that of the head. The thickness of the tail of the water-cooling block is 2-5mm. At the same time, the distance between the tails of adjacent water-cooling blocks can be adjusted according to the cooling range requirements.

[0009] Furthermore, the wall thickness of the water cooling plate's upper channel ranges from 10 to 20 mm. If the wall thickness is too thin, it will affect the service life; if the wall thickness is too thick, it will affect the cooling efficiency.

[0010] Furthermore, the thickness of the partition is ≥2mm, the width of the partition is greater than the width of the water channel of the water cooling plate, and the sealing groove of the partition and the water cooling plate are clearance fit, with a clearance range of 0.2-1mm.

[0011] Furthermore, the sealing groove between the pressure plate and the water cooling plate is a clearance fit, with a clearance range of 0.2-1mm.

[0012] Furthermore, the sum of the thicknesses of the partition plate and the pressure plate is greater than the depth of the sealing groove of the water cooling plate, but less than the sum of the depths of the sealing groove and the chamfer of the water cooling plate.

[0013] Compared with the prior art, the beneficial effects of this utility model are: this utility model achieves rapid reduction of the temperature at the hot spot, and can also reduce the generation of casting defects in other locations, thus achieving a better result.

[0014] Its simple structure and easy operation greatly improve production efficiency and yield, thereby reducing the production cost of wheel hubs. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the lower mold and cooling block after assembly in this utility model;

[0018] Figure 3 This is a schematic diagram of the lower mold in this utility model;

[0019] Figure 4 This is a partial three-dimensional structural diagram of the lower mold in this utility model;

[0020] Figure 5 This is a three-dimensional structural schematic diagram of the cooling block in this utility model;

[0021] Figure 6 This is a schematic diagram of the water-cooled plate in this utility model;

[0022] Figure 7 This is a schematic diagram of the partition plate of this utility model;

[0023] Figure 8 This is a schematic diagram of the pressure plate of this utility model;

[0024] In the diagram: 1. Lower mold; 1-1. Annular groove; 1-2. Water-cooled block mating groove; 1-3. Bolt hole; 2. Water-cooled block; 2-1. Head of water-cooled block; 2-2. Tail of water-cooled block; 3. Water-cooled plate; 3-1. Water channel; 3-2. Sealing groove; 3-3. Chamfer; 3-4. Through hole; 4. Partition plate; 4-1. Water inlet hole one; 4-2. Water outlet hole one; 5. Pressure plate; 5-1. Water inlet hole two; 5-2. Water outlet hole two; 6. Bolt. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0026] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8As shown, a novel aluminum alloy wheel hub mold lower mold includes a lower mold 1, a water-cooling block 2, a water-cooling plate 3, a partition plate 4, a pressure plate 5, and bolts 6. The lower mold 1 is provided with an annular groove 1-1, a water-cooling block mating groove 1-2, and bolt holes 1-3. The water-cooling block mating groove 1-2 corresponds to the position where cooling needs to be increased. The water-cooling block 2 is provided with a water-cooling block head 2-1 and a water-cooling block tail 2-2. The water-cooling plate 3 is provided with a water channel 3-1, a sealing groove 3-2, a chamfer 3-3, and a through hole 3-4. The partition plate 4 is provided with a water inlet hole 4-1 and a water outlet hole 4-2. The pressure plate 5 is provided with a water inlet hole 5-1 and a water outlet hole 5-2.

[0027] During assembly, first place the partition plate 4 and the pressure plate 5 into the sealing groove 3-2 of the water cooling plate 3 in sequence. The first water inlet hole 4-1 corresponds to the second water inlet hole 5-1, and the first water outlet hole 4-2 corresponds to the second water outlet hole 5-2. Fix them by welding. At the same time, install the water cooling block 2 onto the lower mold 1. The head 2-1 of the water cooling block corresponds to the mating groove 1-2 of the water cooling block. Then place the assembled water cooling plate 3 into the annular groove 1-1 and press it onto the water cooling block 2. The through hole 3-4 on the water cooling plate 3 corresponds to the bolt hole 1-3 on the lower mold 1. Finally, fix it with bolts 6.

[0028] Furthermore, depending on the cooling requirements, the water-cooling block 2 can be made of copper, which has better thermal conductivity. The head 2-1 of the water-cooling block and the groove 1-2 of the lower mold water-cooling block are interference-fitted. The size of the tail 2-2 of the water-cooling block is larger than that of the head 2-1 of the water-cooling block to ensure that the water-cooling block 2 will not fall off. The thickness of the tail 2-2 of the water-cooling block is 2-5mm, so that a gap is formed between the lower mold 1 and the water-cooling plate 2, thereby playing a role in heat insulation. At the same time, the distance between the tails 2-2 of adjacent water-cooling blocks can be adjusted according to the cooling range requirements.

[0029] Furthermore, the wall thickness of the upper water channel 3-1 of the water cooling plate 3 ranges from 10 to 20 mm. If the wall thickness is too thin, it will affect the service life; if the wall thickness is too thick, it will affect the cooling efficiency.

[0030] Furthermore, the thickness of the partition plate 4 is ≥2mm, and the width of the partition plate 4 is greater than the width of the water channel 3-1 of the water cooling plate 3, ensuring that the partition plate 4 can seal the water channel 3-1. At the same time, the partition plate 4 and the sealing groove 3-2 of the water cooling plate 3 are in clearance fit, with a clearance range of 0.2-1mm, which facilitates installation.

[0031] Furthermore, the pressure plate 5 and the sealing groove 3-2 of the water cooling plate 3 are in clearance fit, with a clearance range of 0.2-1mm, which facilitates installation.

[0032] Furthermore, the sum of the thicknesses of the partition plate 4 and the pressure plate 5 is greater than the depth of the sealing groove 3-2 of the water cooling plate 3, but less than the sum of the depths of the sealing groove 3-2 and the chamfer 3-3 of the water cooling plate 3, which facilitates welding.

[0033] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A novel aluminum alloy wheel hub mold lower mold, comprising a lower mold, a water-cooling block, a water-cooling plate, a partition plate, a pressure plate, and bolts, characterized in that, The lower mold is provided with an annular groove, a water-cooled block mating groove and bolt holes. The water-cooled block mating groove corresponds to the position where cooling needs to be increased. The water-cooled block is provided with a water-cooled block head and a water-cooled block tail. The water-cooling plate is provided with water channels, sealing grooves, chamfers and through holes. The partition plate is provided with a water inlet hole one and a water outlet hole one. The pressure plate is provided with a water inlet hole two and a water outlet hole two.

2. The novel aluminum alloy wheel hub mold lower die according to claim 1, characterized in that, Depending on the cooling requirements, the water-cooling block can be made of copper, which has better thermal conductivity. The head of the water-cooling block and the groove of the water-cooling block are interference fit. The size of the tail of the water-cooling block should be larger than that of the head. The thickness of the tail of the water-cooling block is 2-5mm.

3. The novel aluminum alloy wheel hub mold lower die according to claim 1, characterized in that, The wall thickness of the water cooling plate's upper water channel ranges from 10 to 20 mm.

4. The novel aluminum alloy wheel hub mold lower mold according to claim 1, characterized in that, The thickness of the partition is ≥2mm, the width of the partition is greater than the width of the water channel of the water cooling plate, and the sealing groove of the partition and the water cooling plate are clearance fit, with a clearance range of 0.2-1mm.

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