Exhaust insert for aluminum alloy die-casting die

Abstract

The utility model provides an exhaust insert for an aluminum alloy die-casting die, and is applied to the technical field of die-casting dies. The exhaust insert for the aluminum alloy die-casting die comprises an insert body which is provided with a plurality of first longitudinal exhaust pipelines in the vertical direction. The first longitudinal exhaust pipeline penetrates through the insert body in the vertical direction; the insert body is provided with a plurality of transverse exhaust pipelines in the horizontal direction; the transverse exhaust pipeline penetrates through the insert body in the horizontal direction; the transverse exhaust pipeline is crossed and overlapped with at least one first longitudinal exhaust pipeline; a plurality of second longitudinal exhaust pipelines are arranged on the insert body in the vertical direction; the top end of the second longitudinal exhaust pipeline communicates with the transverse exhaust pipeline. In this way, the product percent of pass can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of die casting moulds, in particular to an exhaust insert for an aluminium alloy die casting mould. Background Art

[0002] Aluminum alloy die casting is a common manufacturing process used to produce aluminum alloy parts of various complex shapes, such as automotive parts, electronic equipment housings, etc. In the aluminum alloy die casting process, exhaust is a crucial link. In the aluminum alloy die casting process, after the mold cavity is filled with aluminum alloy melt, exhaust phenomena such as bubbles and air gaps often form on its surface. If these gases cannot be effectively discharged out of the mold cavity, it will cause defects such as pores inside the casting, affecting the quality of the casting. The exhaust insert can effectively guide the gas in the mold cavity to be discharged through its reasonably designed ventilation structure, ensuring the smoothness and uniformity of the aluminum alloy during the filling process; aluminum alloy is easily oxidized at high temperatures, and oxidation will lead to problems such as reduced surface quality of castings and poor molding. The exhaust insert effectively reduces the oxygen content in the mold cavity by guiding the gas to be discharged. , thereby reducing the degree of oxidation of the aluminum alloy melt and ensuring the smoothness and molding quality of the casting surface; aluminum alloy die-casting molds often face high temperature and high pressure working environments. Long-term work can easily cause the mold to be affected by thermal stress and pressure, resulting in damage and wear on the mold surface. The exhaust insert, as an important part of the mold, can reduce the gas accumulation in the mold cavity, reduce the thermal stress and pressure to which the mold is subjected during operation, and extend the service life of the mold; the exhaust insert can effectively guide the gas in the mold cavity to be discharged, avoiding the generation of defects such as pores and bubbles, thereby ensuring the molding quality and appearance of the casting, and improving the market competitiveness of aluminum alloy castings.

[0003] At present, the disadvantage of the exhaust block commonly used in the die-casting industry is that in die-casting production, the large-flow exhaust cannot ensure that the gas is discharged in time, and the unexhausted gas will flow back, forming an exhaust "blind spot". At present, in order to improve the exhaust effect, the industry has made many improvements to the exhaust block of the mold, such as changing the conventional tooth-shaped exhaust block to a mechanical vacuum valve, installing a high-power vacuum pump, and optimizing the vacuum process parameters. These improvements have enhanced the "exhaust" effect to a certain extent, but when the agglomerated gas happens to be in the exhaust "blind spot" of the mold when the aluminum liquid gathers, the above method cannot effectively discharge the gas in the "blind spot", resulting in a low product qualification rate. Utility Model Content

[0004] The utility model aims to provide an exhaust insert for an aluminum alloy die-casting mold in order to solve the above-mentioned problem.

[0005] The utility model achieves the above-mentioned purpose through the following technical solutions:

[0006] An exhaust insert for an aluminum alloy die-casting mold, comprising:

[0007] An insert body (1), wherein the insert body (1) is provided with a plurality of first longitudinal exhaust pipes (2) in the vertical direction; the first longitudinal exhaust pipes (2) penetrate the insert body (1) in the vertical direction; the insert body (1) is provided with a plurality of transverse exhaust pipes (3) in the horizontal direction; the transverse exhaust pipes (3) penetrate the insert body (1) in the horizontal direction; the transverse exhaust pipes (3) cross and overlap with at least one of the first longitudinal exhaust pipes (2); the insert body (1) is provided with a plurality of second longitudinal exhaust pipes (4) in the vertical direction; the top ends of the second longitudinal exhaust pipes (4) are connected to the transverse exhaust pipes (3).

[0008] Furthermore: a groove (5) is provided at the top end of the first longitudinal exhaust pipe (2).

[0009] Furthermore: the shape of the groove (5) is hemispherical.

[0010] Furthermore: the diameter of the groove (5) ranges from 0.6 to 1 mm.

[0011] Furthermore: the diameter of the first longitudinal exhaust pipe (2) is in the range of 0.1 to 0.3 mm.

[0012] Furthermore, the diameter of the transverse exhaust pipe (3) ranges from 0.5 to 2.5 mm.

[0013] Furthermore: the diameter of the second longitudinal exhaust pipe (4) is in the range of 0.5 to 2.5 mm.

[0014] Furthermore: the material of the insert body (1) is beryllium bronze.

[0015] Furthermore, the insert body (1) is arranged at a gas gathering location of the aluminum alloy die-casting mold.

[0016] Furthermore, the insert body (1) can be detachably connected to the aluminum alloy die-casting mold.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. By setting a hemispherical groove at the top of the first longitudinal exhaust pipe, the contact surface area of ​​the product is increased, the cooling speed of the product surface is improved, and a surface chill layer is quickly formed. After surface processing, the possibility of gas generation can be effectively reduced; while ensuring the gas discharge, the fluidity of the aluminum liquid slows down after cooling, preventing the first longitudinal exhaust pipe from being blocked, thereby improving the qualified rate of the product;

[0019] 2. By using beryllium bronze as the material of the insert body, the wear resistance of the insert body is increased. At the same time, beryllium bronze has good thermal conductivity, which accelerates the cooling speed of aluminum water after contacting the surface, prevents blockage, reduces the possibility of pores on the product surface, and thus improves the qualified rate of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0021] Figure 1 A three-dimensional diagram of an exhaust insert for an aluminum alloy die-casting mold provided by an embodiment of the utility model is shown;

[0022] Figure 2 A front view of an exhaust insert for an aluminum alloy die-casting mold provided by an embodiment of the utility model is shown;

[0023] Figure 3 A side view of a vent insert for an aluminum alloy die-casting mold provided by an embodiment of the utility model is shown;

[0024] Figure 4 A first cross-sectional stereoscopic view of an exhaust insert for an aluminum alloy die-casting mold provided by an embodiment of the utility model is shown;

[0025] Figure 5 A first cross-sectional front view of a vent insert for an aluminum alloy die-casting mold provided by an embodiment of the utility model is shown;

[0026] Figure 6 A second cross-sectional stereoscopic view of an exhaust insert for an aluminum alloy die-casting mold provided by an embodiment of the utility model is shown;

[0027] Figure 7 A top view of a vent insert for an aluminum alloy die-casting mold provided by an embodiment of the utility model is shown;

[0028] Figure 8 A bottom view of an exhaust insert for an aluminum alloy die-casting mold provided by an embodiment of the utility model is shown;

[0029] The following are the descriptions of the reference numerals:

[0030] 1. Insert body; 2. First longitudinal exhaust duct; 3. Transverse exhaust duct; 4. Second longitudinal exhaust duct; 5. Groove. DETAILED DESCRIPTION

[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features limited to "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0033] The utility model is further described below in conjunction with the accompanying drawings:

[0034] like Figure 1-Figure 8 As shown, an exhaust insert for an aluminum alloy die-casting mold comprises:

[0035] The insert body 1 is provided with 66 first longitudinal exhaust ducts 2 in the vertical direction; the first longitudinal exhaust ducts 2 penetrate the insert body 1 in the vertical direction; the insert body 1 is provided with 3 transverse exhaust ducts 3 in the horizontal direction; the transverse exhaust ducts 3 penetrate the insert body 1 in the horizontal direction; the transverse exhaust ducts 3 cross and overlap with the 22 first longitudinal exhaust ducts 2; the insert body 1 is provided with 3 second longitudinal exhaust ducts 4 in the vertical direction; the top end of the second longitudinal exhaust duct 4 is connected with the transverse exhaust duct 3.

[0036] In some embodiments, a groove 5 is provided at the top of the first longitudinal exhaust duct 2. In some embodiments, the shape of the groove 5 is hemispherical. According to the embodiment of the utility model, by providing a hemispherical groove at the top of the first longitudinal exhaust duct, the contact surface area of ​​the product is increased, the cooling speed of the product surface is improved, and a surface quenching layer is quickly formed. After the surface is processed, the possibility of gas generation can be effectively reduced; while ensuring the gas discharge, the fluidity of the aluminum liquid slows down after the temperature drops, preventing the first longitudinal exhaust duct from being blocked, thereby improving the qualified rate of the product.

[0037] In some embodiments, the diameter of the groove 5 ranges from 0.6 to 1 mm. For example, the diameter of the groove 5 may be 0.8 mm.

[0038] In some embodiments, the diameter of the first longitudinal exhaust duct 2 ranges from 0.1 to 0.3 mm. For example, the diameter of the first longitudinal exhaust duct 2 may be 0.2 mm.

[0039] In some embodiments, the first longitudinal exhaust duct 2 is machined using a small-hole electric discharge machine.

[0040] In some embodiments, the diameter of the transverse exhaust duct 3 ranges from 0.5 to 2.5 mm. For example, the diameter of the transverse exhaust duct 3 may be 2 mm.

[0041] In some embodiments, the diameter of the second longitudinal exhaust duct 4 ranges from 0.5 to 2.5 mm. For example, the diameter of the second longitudinal exhaust duct 4 may be 2 mm.

[0042] In some embodiments, the insert body 1 is made of beryllium bronze. According to the embodiment of the utility model, by using beryllium bronze as the material of the insert body, the wear resistance of the insert body is increased. At the same time, beryllium bronze has good thermal conductivity, which accelerates the cooling speed of aluminum water after contacting the surface, prevents clogging, reduces the possibility of pores on the product surface, and thus improves the qualified rate of the product.

[0043] In some embodiments, the insert body 1 is disposed at a gas gathering location of an aluminum alloy die-casting mold.

[0044] In some embodiments, the insert body 1 is detachably connected to the aluminum alloy die-casting mold.

[0045] The basic principles, main features and advantages of the utility model are shown and described above. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements shall fall within the scope of the utility model to be protected.

Claims

1. An exhaust insert for an aluminum alloy die-casting mold, comprising an insert body (1), characterized in that: The insert body (1) is provided with a plurality of first longitudinal exhaust pipes (2) in the vertical direction; the first longitudinal exhaust pipes (2) penetrate the insert body (1) in the vertical direction; the insert body (1) is provided with a plurality of transverse exhaust pipes (3) in the horizontal direction; the transverse exhaust pipes (3) penetrate the insert body (1) in the horizontal direction; the transverse exhaust pipes (3) cross and overlap with at least one of the first longitudinal exhaust pipes (2); the insert body (1) is provided with a plurality of second longitudinal exhaust pipes (4) in the vertical direction; the top ends of the second longitudinal exhaust pipes (4) are connected to the transverse exhaust pipes (3).

2. The exhaust insert for aluminum alloy die casting mold according to claim 1, characterized in that: A groove (5) is provided at the top end of the first longitudinal exhaust pipe (2).

3. The exhaust insert for aluminum alloy die casting mold according to claim 2, characterized in that: The groove (5) is in a hemispherical shape.

4. The exhaust insert for aluminum alloy die casting mold according to claim 3, characterized in that: The diameter of the groove (5) ranges from 0.6 to 1 mm.

5. The exhaust insert for aluminum alloy die casting mold according to claim 4, characterized in that: The diameter of the first longitudinal exhaust pipe (2) is in the range of 0.1 to 0.3 mm.

6. The exhaust insert for aluminum alloy die casting mold according to claim 5, characterized in that: The diameter of the transverse exhaust pipe (3) ranges from 0.5 to 2.5 mm.

7. The exhaust insert for aluminum alloy die casting mold according to claim 6, characterized in that: The diameter of the second longitudinal exhaust pipe (4) is in the range of 0.5 to 2.5 mm.

8. The exhaust insert for aluminum alloy die casting mold according to claim 7, characterized in that: The insert body (1) is made of beryllium bronze.

9. The exhaust insert for aluminum alloy die casting mold according to claim 8, characterized in that: The insert body (1) is arranged at a gas gathering location of an aluminum alloy die-casting mold.

10. The exhaust insert for aluminum alloy die casting mold according to claim 9, characterized in that: The insert body (1) is detachably connected to the aluminum alloy die-casting mold.

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