Hub low-pressure mold side mold temperature raising and exhausting structure

Abstract

The utility model relates to a hub low-pressure die side die temperature raising and exhausting structure which comprises four side dies which are spliced into a ring in a surrounding mode, and the splicing face between each side die and the adjacent side die is a 45-degree inclined face. Grooves are formed in the ends, close to the outer sides of the side dies, of the inclined faces, a plurality of exhaust lines distributed up and down are arranged at the ends, close to the inner sides of the side dies, of the inclined faces, the grooves in the two contacted inclined faces are oppositely arranged, and the exhaust lines are communicated with the grooves in the same inclined face. According to the utility model, through simple processing on original mold accessories, the effects of weight reduction, temperature raising and exhaust of the mold are achieved, and the mold is simpler and more practical.

Description

Technical Field

[0001] The utility model belongs to the technical field of wheel hub casting, and in particular relates to a wheel hub low-pressure mold side mold temperature raising and exhaust structure. Background Art

[0002] At present, in the low-pressure casting process of the wheel hub, the molds used are mostly composed of upper molds, side molds, lower molds and other structures. The side molds are generally split structures, which are formed by four side mold modules spliced ​​around each other. The splicing surface is a 45-degree inclined surface. At the same time, an exhaust line is usually engraved on the top surface of the side mold, and an exhaust plug is provided on the upper mold for exhaust during casting. However, in actual applications, since the thickness of the side walls where the inclined surfaces on both sides of the side mold are located is greater than the wall thickness of the middle section, there will be a problem of uneven temperature between the middle and both sides of the side mold, which will increase the difficulty of exhaust. Moreover, since the exhaust line is opened at the junction of the side mold and the upper mold, not only is it easy to cause flash to affect production, but also it is easy for aluminum chips to fill the exhaust line and the exhaust plug after a short period of use, which is difficult to clean. It requires the use of professional large-scale ultrasonic equipment to remove it, or directly replace the corresponding mold parts, which is costly and not practical enough and needs to be improved. Utility Model Content

[0003] In view of this, the purpose of the utility model is to provide a wheel hub low-pressure mold side mold temperature raising and exhaust structure, which can reduce weight and even temperature by setting grooves on the inclined surface, and relocate the exhaust line on the inclined surface to ensure exhaust and easy cleaning and maintenance, so as to solve the above problems.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a wheel hub low-pressure mold side mold temperature raising and exhaust structure, including four side molds, the four side molds are spliced ​​together into a ring shape, and the splicing surfaces between each side mold and the adjacent side molds are 45-degree slopes, and the slope is provided with a groove at one end close to the outer side of the side mold, and a plurality of exhaust lines distributed up and down are provided at the end close to the inner side of the side mold, the grooves on the two contacting slopes are arranged opposite to each other, and the exhaust lines are connected to the grooves on the same slope.

[0005] Preferably, the depth of the groove is 5 mm.

[0006] Preferably, the depth of the exhaust line is 0.1 to 0.15 mm.

[0007] Preferably, the exhaust lines on the two contacting inclined surfaces are staggered.

[0008] The beneficial effects of the utility model are as follows: by providing a groove on the inclined surface at the joint of the side mold, the wall thickness where the inclined surface is located can be effectively thinned, which is beneficial to reducing the overall weight of the mold and saving production costs, and can also increase the temperature of the side where the inclined surface is located during actual casting. Compared with the original side mold without a groove, the temperature of the side where the inclined surface is located is closer to the temperature of the middle section of the side mold, that is, the temperature is more balanced, easier to exhaust, and the casting quality is guaranteed; by changing the exhaust line to the inclined surface, the flash problem at the separation and combination of the side mold and the upper mold can be effectively avoided, and while ensuring normal exhaust during casting, the difficulty of cleaning and maintaining the exhaust line is reduced, so that in actual use, when aluminum is stored in the exhaust line, it only needs to be manually quickly cleared after the side molds are separated, which is more simple and practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic diagram of the top view structure of the utility model;

[0010] Figure 2 It is a schematic structural diagram of the inclined surface of a single side mold of the utility model;

[0011] Figure 3 It is a schematic diagram of the top view of a single side mold of the utility model;

[0012] Figure 4 It is a schematic diagram of the distribution structure of the exhaust lines on two contacting inclined surfaces of the utility model.

[0013] The numbers in the figure are: 1 is the side mold, 2 is the inclined surface, 3 is the groove, and 4 is the exhaust line. DETAILED DESCRIPTION

[0014] The utility model is further described in detail below with reference to the accompanying drawings and specific implementation methods:

[0015] like Figures 1 to 4 As shown, a wheel hub low-pressure mold side mold temperature raising and exhaust structure includes four side molds 1, which are spliced ​​around into a ring shape, and the splicing surface between each side mold 1 and the adjacent side mold 1 is a 45-degree inclined surface 2. The inclined surface 2 is provided with a groove 3 at one end close to the outer side of the side mold 1, and a plurality of exhaust lines 4 distributed up and down are provided at one end close to the inner side of the side mold 1. The grooves 3 on the two contacting inclined surfaces 2 are arranged oppositely, and the exhaust lines 4 are connected with the grooves 3 on the same inclined surface 2;

[0016] In actual production and use, the four side molds 1 are enclosed into a ring shape, and cooperate with other existing mold components to form a cavity, and then the aluminum liquid is injected into the cavity through the casting port. As the liquid level rises, the original air in the cavity can be discharged to the outside from the groove 3 on the inclined surface 2 through the exhaust line 4. The setting of the groove 3 can effectively reduce the wall thickness of the inclined surface 2, which is not only conducive to reducing the overall weight of the mold and saving production costs, but also can increase the temperature of the side where the inclined surface is located during actual casting. Compared with the original side mold 1 without the groove 3, the temperature of the side where the inclined surface is located is closer to the temperature of the middle section of the side mold 1, that is, the temperature is more balanced, easier to exhaust, and the casting quality is guaranteed; and the exhaust line 4 is changed to the inclined surface 2, which can effectively avoid the flash problem at the separation and combination of the side mold 1 and the upper mold, and while ensuring normal exhaust during casting, it also reduces the difficulty of cleaning and maintaining the exhaust line 4, so that in actual use, when aluminum is stored in the exhaust line 4, it only needs to be manually quickly cleared after the side mold 1 is separated, which is more simple and practical.

[0017] In this embodiment, the depth of the groove 3 is 5 mm. In actual production, the wall thickness of the middle section of the conventional side mold 1 is generally 20 mm, and the wall thickness of the side where the inclined surface 2 is located is generally 25 mm. Setting the depth of the groove 3 to 5 mm can reduce the wall thickness of the side where the inclined surface is located to 20 mm, which is more conducive to the temperature balance between the middle section and the side, and reducing the temperature difference.

[0018] In this embodiment, the depth of the exhaust line 4 is 0.1-0.15 mm to ensure that the depth of the exhaust line 4 is appropriate, which can achieve normal exhaust and avoid aluminum leakage caused by excessive depth.

[0019] In this embodiment, the exhaust lines 4 on the two contacting inclined surfaces 2 are arranged in a staggered manner to avoid the problem of aluminum leakage caused by forming a larger through groove when the exhaust lines 4 are arranged opposite to each other.

[0020] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A wheel hub low-pressure mold side mold temperature raising and exhaust structure, comprising four side molds, the four side molds are spliced ​​around into a ring shape, and the splicing surface between each side mold and the adjacent side mold is a 45-degree inclined surface, characterized in that: The end of the inclined surface close to the outer side of the side mold is provided with a groove, and the end close to the inner side of the side mold is provided with a plurality of exhaust lines distributed up and down. The grooves on the two contacting inclined surfaces are arranged oppositely, and the exhaust lines are connected with the grooves on the same inclined surface.

2. The wheel hub low-pressure mold side mold temperature raising and exhaust structure according to claim 1 is characterized in that: The depth of the groove is 5 mm.

3. The wheel hub low-pressure mold side mold temperature raising and exhausting structure according to claim 1 is characterized in that: The depth of the exhaust line is 0.1 to 0.15 mm.

4. The wheel hub low-pressure mold side mold temperature raising and exhausting structure according to claim 1 is characterized in that: The exhaust lines on the two contacting inclined surfaces are staggered.

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