CN210139049U - A circulating water-cooled low-pressure aluminum alloy wheel hub casting mold - Google Patents

Abstract

The utility model relates to the technical field of aluminum alloy wheel hub preparation, in particular to a circulating water-cooled low-pressure aluminum alloy wheel hub casting mold, comprising an upper mold, a lower mold, a side mold and a main workpiece that cooperate with each other, the upper mold, the lower mold and the side mold An automobile wheel hub cavity for casting an automobile wheel hub is formed, the main workpiece is connected with the upper mold, and a circulating water channel is processed on the main workpiece. The design of the utility model has less welding positions at the sealing end of the internal water channel, so the stress is also small, the workpiece is not easy to crack, and because the water flow is circulated and discharged inside the workpiece, the cooling effect is good, the structure is simple, and the use is convenient. And the workpiece is durable.

Description

A circulating water-cooled low-pressure aluminum alloy wheel hub casting mold

technical field

The utility model relates to the technical field of aluminum alloy wheel hub preparation, in particular to a circulating water-cooled low-pressure aluminum alloy wheel hub casting mold.

Background technique

At present, aluminum wheels have been widely used, and most of them are prepared by casting. Among them, the low-pressure mold used is extremely important. In order to ensure the normal operation of the mold and the requirements of the casting process, the mold needs to be cooled. Generally, the cooling methods used are: 1. Drill circular holes on the wall of the mold, ventilate and blow air, and do air cooling; 2. Use the water-cooling form of sticking cooling or welding the annular groove on the workpiece and then pressing the plate to weld. Among them, although the air blowing cooling method is simple, the heat conduction efficiency is low and the cooling effect is not obvious. The cooling effect is poor due to the frequent deformation of the workpiece by alternating cold and heat, resulting in poor cooling effect. However, the annular groove is opened on the workpiece and then the pressure plate is welded to form, and the workpiece is easily cracked due to the frequent alternation of cold and heat and the welding stress, resulting in difficulty in repairing the mold or scrapping. Therefore, it is necessary to continue to improve.

SUMMARY OF THE INVENTION

In view of the deficiencies in the prior art, the purpose of the present invention is to provide a circulating water-cooled low-pressure aluminum alloy wheel hub casting mold, which is simple in structure, easy to use, and has the characteristics of good cooling effect, not easy to crack, and durable.

In order to achieve the above purpose, the present invention is a circulating water-cooled low-pressure aluminum alloy wheel hub casting mold, including an upper mold, a lower mold, a side mold and a main workpiece that cooperate with each other, and the upper mold, the lower mold and the side mold are formed for casting automobiles. The automobile wheel hub cavity of the wheel hub, the main workpiece is connected with the upper mold, the main workpiece is provided with a circulating cold water channel, and the cooling effect is good.

Further, in order to ensure the optimal cooling effect and durability of the mold, the circulating cold water channel includes a water inlet end, a water outlet end, a welded sealing end and an internal water channel, and the circulating cold water channel is round, elongated and uniform. Distributed on the side wall of the main workpiece; the water inlet end and the water outlet end of the circulating cold water channel are connected and drawn out through seamless pipe welding; the internal water channel communication part is processed with a welded sealing end.

Preferably, in order to ensure the strength requirements of the mold, the material of the main workpiece is H13 mold steel, and the heat treatment hardness is HRC30-35.

The beneficial effects of the utility model are as follows: a circulating water-cooled low-pressure aluminum alloy wheel hub casting mold uses the inner water channel connection to process a welded sealing end, and the processed inner water channel sealing end has fewer welding positions, so that the stress becomes smaller, and the workpiece is not easy to crack , Through the circular elongated circulating cold water channel evenly distributed on the side wall of the main workpiece, the water flow is circulated and discharged inside the workpiece, so the cooling effect is good. The structure is simple, the use is convenient, the workpiece is durable, and the workpiece is easily cracked due to frequent alternation of cold and heat and welding stress, resulting in difficulty in repairing the mold or the occurrence of scrapping.

Description of drawings

For ease of description, the present invention is described in detail by the following preferred embodiments and accompanying drawings.

Fig. 1 is a kind of circulating water cooling low pressure aluminum alloy wheel hub casting mould structure diagram of the present invention;

Figure 2 is a structural diagram of the main workpiece of a circulating water-cooled low-pressure aluminum alloy wheel hub casting mold of the present invention.

In the picture: 1. Lower die; 2. Upper die; 3. Side die; 4. Main workpiece; 5. Circulating cold water channel; 6. Welding sealing end; 7. Water inlet end; 8. Water outlet end; 9. Internal water channel .

Detailed ways

The circulating water-cooled low-pressure aluminum alloy wheel hub casting mold provided by the embodiment of the present invention has the advantages of simple structure, convenient use, good cooling effect, not easy to crack, durable, and can improve production efficiency.

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

As shown in Figures 1 and 2, a circulating water-cooled low-pressure aluminum alloy wheel casting mold includes an upper mold 2, a lower mold 1, a side mold 3 and a main workpiece 4 that cooperate with each other. The upper mold 2, the lower mold 1 and the side mold 3. An automobile wheel hub cavity for casting automobile wheels is formed. The main workpiece 4 is connected to the upper mold 2. The material of the main workpiece 4 is H13 mold steel, and the heat treatment hardness is HRC30-35. In order to meet the requirements of the casting process, the mold needs to be cooled during casting. The utility model adopts a water cooling method to cool the mold to achieve a good cooling effect. The required process requirements, the casting scrap rate is low, and the production efficiency is high. As shown in FIG. 2, the circulating cold water channel 5 includes a water inlet end 7, a water outlet end 8, a welded sealing end 6 and an internal water channel 9. In the present invention, a circular long circular cold water channel 5 is processed by a drilling machine. And evenly distributed in the side wall of the main workpiece 4, the water flow is circulated and discharged inside the workpiece, so its cooling effect is good. The outer wall of the main workpiece 4 is drilled to a certain depth, and then the drilling is stopped so that an unconnected water channel is obtained. In the same method, the water channel is evenly processed on the main workpiece 4, and the subsequent water channel passes through the front of the previous water channel. The water channels are connected to each other, and the interconnected water channels are formed inside the workpiece. The initial water channel is not connected to the last water channel, and then a small section of the outer end of the water channel is welded and sealed. The position is located at the welding sealing end 6 to avoid liquid leakage. Only the interconnected water channels are left to form a circulating cold water channel 5 to cool the workpiece. The advantage of this is that only one point is welded on the workpiece, and the welding stress is very small. If the welding point is less, the corresponding stress will become smaller. The workpiece is not easy to crack, and the general processing method is to carve the annular groove on the workpiece, pass through the pressure plate, and then fully weld the water channel. Because the welding is a full circle of welding, the welding stress is large and remains on the workpiece. It will be easy to crack due to frequent hot and cold alternation and high welding stress, resulting in difficulty in repairing or scrapping the mold. Therefore, this solution can prevent and reduce the cracking of the workpiece due to frequent hot and cold alternation and excessive welding stress. It is convenient, and the workpiece is not easy to crack and durable; the water inlet end 7 and the water outlet end 8 of the circulating cold water channel are drawn out through a seamless pipe welding connection, which ensures the sealing performance of the water channel.

The above content is a limitation of the protection scope of the present invention in combination with the specific preferred embodiments. Those skilled in the art should understand that on the basis of the technical solutions of the present invention, those skilled in the art can make various Such modifications or deformations are still within the protection scope of the present invention.

Claims (3)

1. A circulating water-cooled low-pressure aluminum alloy wheel hub casting mold, comprising an upper mold (2), a lower mold (1), a side mold (3) and a main workpiece (4) that cooperate with each other, the upper mold (2), the lower mold (2), the lower mold (1) and the main workpiece (4). The mold (1) and the side mold (3) form an automobile wheel hub cavity for casting an automobile wheel hub, and the main workpiece (4) is connected with the upper mold (2), characterized in that: the main workpiece (4) A circulating cold water channel (5) is provided. 2. A circulating water-cooled low-pressure aluminum alloy wheel hub casting mold according to claim 1, characterized in that: the circulating cold water channel (5) comprises a water inlet end (7), a water outlet end (8), a welded sealing end ( 6) and the internal water channel (9), the circulating cold water channel (5) is in the shape of a circular strip and is evenly distributed on the side wall of the main workpiece (4); the water inlet end ( 7) Connected with the water outlet (8) through seamless pipe welding; the internal water channel (9) is connected with a welded sealing end (6). 3. A circulating water-cooled low-pressure aluminum alloy wheel hub casting mold according to claim 1, characterized in that: the material of the main workpiece (4) is H13 mold steel, and the heat treatment hardness is HRC30-35.

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