A die casting mold with deep cavity exhaust structure

Abstract

The present application relates to the technical field of die-casting mold equipment, and specifically discloses a die-casting mold with a deep cavity exhaust structure, which includes a body and an exhaust insert, the body is provided with a cavity, the cavity includes a deep cavity and a shallow cavity, the deep cavity and the shallow cavity are connected, the exhaust insert is detachably arranged on the side of the body away from the cavity, the exhaust insert is provided with an exhaust duct, the exhaust duct is connected with the deep cavity and the external environment, and a check piece is detachably arranged at one end of the exhaust insert away from the body, and the check piece is connected with the exhaust duct. The present application has the effect of improving the problem of external impurities entering through the exhaust duct in the existing die-casting mold with a deep cavity structure.

Description

Technical Field

[0001] The present application relates to the technical field of die-casting mold equipment, and in particular to a die-casting mold with a deep cavity exhaust structure. Background Art

[0002] In the field of die-casting technology, mold design is crucial to product quality and production efficiency. Traditional die-casting molds often face the problem of poor exhaust when facing products with deep cavity structures.

[0003] In order to exhaust the air in the cavity, existing die-casting molds usually have an exhaust duct connected to the deep cavity for exhausting gas on the mold body. However, due to the complex structure and large space of the deep cavity mold, in order to enable the air in the deep cavity to be discharged smoothly, the inner diameter of the exhaust duct is usually set larger. The larger inner diameter of the exhaust duct makes it easy for external impurities to enter, affecting product quality. Summary of the invention

[0004] In order to improve the problem of external impurities entering through the exhaust duct of the existing die-casting mold with a deep cavity structure, the present application provides a die-casting mold with a deep cavity exhaust structure.

[0005] The present application provides a die-casting mold with a deep cavity exhaust structure using the following technical solutions:

[0006] A die-casting mold with a deep cavity exhaust structure, comprising:

[0007] The body is provided with a cavity, the cavity comprising a deep cavity and a shallow cavity, the deep cavity is connected with the shallow cavity;

[0008] An exhaust insert is detachably arranged on a side of the main body away from the cavity, the exhaust insert is provided with an exhaust duct, the exhaust duct is connected with the deep cavity and the external environment, and a check piece is detachably arranged on one end of the exhaust insert away from the main body, the check piece is connected with the exhaust duct.

[0009] By adopting the above technical scheme, the cavity of the main body is composed of a deep cavity and a shallow cavity, and the deep cavity and the shallow cavity are interconnected, so that the mold can adapt to the die-casting requirements of different depths, while maintaining the continuity of the internal structure, facilitating the flow and filling of molten metal; an exhaust duct is arranged inside the exhaust insert, and the exhaust duct is connected with the deep cavity and the external environment. This structure can effectively discharge the air in the deep cavity to the external environment, and the check piece can prevent external impurities from entering the cavity during the exhaust process, and at the same time prevent the molten metal in the cavity from flowing into the exhaust duct when no exhaust is performed, thereby protecting the mold and improving product quality, and improving the problem of external impurities entering through the exhaust duct in the existing die-casting mold with a deep cavity structure.

[0010] Preferably, the exhaust passage comprises a narrow passage and a wide passage, the narrow passage is in communication with the deep cavity and the wide passage, and one end of the wide passage away from the narrow passage is in communication with the external environment.

[0011] By adopting the above technical solution, the narrow channel has less impact on gas discharge, allowing the gas to be discharged smoothly. The narrow channel has a greater impact on molten metal liquid, reducing the metal liquid entering the narrow channel through fluid resistance; the wide channel facilitates gas discharge.

[0012] Preferably, an inclined passage is provided between the narrow passage and the wide passage.

[0013] By adopting the above technical solution, the inclined passage can prevent the molten metal from entering the wide channel, ensuring smooth exhaust while preventing the molten metal from flowing out.

[0014] Preferably, the surface of the narrow channel is smoothly arranged.

[0015] By adopting the above technical solution, the air in the cavity can be discharged smoothly through the narrow channel, while reducing the friction between the molten metal and the inner wall of the narrow channel, avoiding adhesion and accumulation caused by friction.

[0016] Preferably, the wide channel is trumpet-shaped, and one end of the narrow opening of the wide channel is connected to the narrow channel.

[0017] By adopting the above technical solution, the wide channel is convenient for pressure relief, so that the gas can be discharged smoothly.

[0018] Preferably, the check member includes a limiting ring and an elastic flap, the limiting ring and the elastic flap are integrally formed, the limiting ring is provided with a through hole, the through hole is connected to an end of the wide channel away from the narrow channel, the elastic flap is movably arranged on one side of the limiting ring, and the elastic flap is arranged opposite to the through hole.

[0019] By adopting the above technical solution, the air in the cavity can be smoothly discharged to the external environment through the through hole, and at the same time, the elastic flap limits the flow of molten metal when no exhaust is performed.

[0020] Preferably, the elastic flap is provided with two pieces, and the two pieces of the elastic flap are arranged to overlap.

[0021] By adopting the above technical solution, the overlapping arrangement of the two elastic petals enhances the sealing effect of the check member, and reduces the risk of molten metal flowing out while allowing gas to be discharged.

[0022] Preferably, the thickness of the limiting ring is greater than the thickness of the elastic flap.

[0023] By adopting the above technical solution, the thicker design of the limiting ring provides sufficient strength and stability to support and fix the elastic flap.

[0024] Preferably, the limiting ring is further provided with a wrinkle portion, wherein the wrinkle portion is provided between the elastic flap and the limiting ring, and the wrinkle portion is used to ensure the stability of the movement of the elastic flap.

[0025] By adopting the above technical solution, the wrinkled portion helps to maintain the stability of the elastic flap during the opening and closing process.

[0026] Preferably, the limiting ring, the elastic flap and the wrinkled portion are all made of silicone rubber.

[0027] By adopting the above technical solution, the use of silicone rubber in the limiting ring, elastic flap and wrinkled part can ensure elasticity and durability, and also have a certain degree of flexibility.

[0028] In summary, the present application includes at least one of the following beneficial technical effects:

[0029] 1. The cavity of the main body is composed of a deep cavity and a shallow cavity, which are interconnected, so that the mold can adapt to the die-casting requirements of different depths, while maintaining the continuity of the internal structure, which is convenient for the flow and filling of molten metal; an exhaust duct is arranged inside the exhaust insert, which is connected with the deep cavity and the external environment. This structure can effectively discharge the air in the deep cavity to the external environment. The check piece can prevent external impurities from entering the cavity during the exhaust process, and prevent the molten metal in the cavity from flowing into the exhaust duct when there is no exhaust, which plays a role in protecting the mold and improving product quality, and improves the problem of external impurities entering through the exhaust duct in the existing die-casting mold with a deep cavity structure;

[0030] 2. The narrow channel has little effect on gas discharge, which allows the gas to be discharged smoothly. The narrow channel has a greater impact on the molten metal liquid, and the fluid resistance is used to reduce the metal liquid entering the narrow channel; the wide channel facilitates gas discharge;

[0031] 3. The smoothly transitioned curved surface can avoid airflow obstruction and ensure smooth exhaust. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a die-casting mold with a deep cavity exhaust structure in the embodiment of the present application;

[0033] Figure 2 is a bottom view of a die-casting mold with a deep cavity exhaust structure in an embodiment of the present application;

[0034] Figure 3 is a schematic diagram of the structure of the exhaust insert in the embodiment of the present application;

[0035] Figure 4 is a side view of an exhaust insert in an embodiment of the present application;

[0036] Figure 5is a top view of the exhaust insert in an embodiment of the present application;

[0037] Figure 6 yes Figure 5 Sectional view along line AA;

[0038] Figure 7 It is a bottom view of the exhaust insert in the embodiment of the present application.

[0039] Explanation of the reference numerals: 1. body; 11. deep cavity; 12. shallow cavity; 2. exhaust insert; 21. exhaust passage; 211. narrow passage; 212. wide passage; 213. inclined passage; 22. check member; 221. limiting ring; 222. elastic flap; 223. wrinkled portion; 224. through hole. DETAILED DESCRIPTION

[0040] The following is combined with Figure 1-7 This application is described in further detail.

[0041] The present application embodiment discloses a die-casting mold with a deep cavity exhaust structure. Figure 1 and Figure 2 The die-casting mold of the deep cavity 11 exhaust structure includes a main body 1 and an exhaust insert 2.

[0042] like Figure 1 and Figure 3 As shown, the main body 1 is provided with a cavity, which includes a deep cavity 11 and a shallow cavity 12, and the deep cavity 11 and the shallow cavity 12 are connected; the cavity of the main body 1 is composed of the deep cavity 11 and the shallow cavity 12, and the deep cavity 11 and the shallow cavity 12 are connected to each other, so that the mold can adapt to the die-casting requirements of different depths while maintaining the continuity of the internal structure to facilitate the flow and filling of molten metal.

[0043] It should be noted that, in the embodiment of the present application, the main body 1 can be a movable mold or a fixed mold of a mold.

[0044] like Figure 4 and Figure 5As shown, the exhaust insert 2 is detachably arranged on the side of the main body 1 away from the cavity through a mounting seat and / or bolts and other structures, and the exhaust insert 2 is provided with an exhaust duct 21, which is connected to the deep cavity 11 and the external environment. The end of the exhaust insert 2 away from the main body 1 is detachably provided with a check member 22 through an adhesive and other structures or devices, and the check member 22 is connected to the exhaust duct 21; the exhaust insert 2 is provided with an exhaust duct 21 inside, and the exhaust duct 21 is connected to the deep cavity 11 and the external environment. This structure can effectively discharge the air in the deep cavity 11 to the external environment, and the check member 22 can prevent external impurities from entering the cavity during the exhaust process, and at the same time prevent the molten metal in the cavity from flowing into the exhaust duct 21 when no exhaust is performed, thereby protecting the mold and improving the product quality, and improving the problem of external impurities entering through the exhaust duct 21 in the existing die-casting mold with a deep cavity structure.

[0045] like Figure 6 and Figure 7 As shown, the exhaust channel 21 includes a narrow channel 211 and a wide channel 212. The narrow channel 211 is connected to the deep cavity 11 and the wide channel 212. The end of the wide channel 212 away from the narrow channel 211 is connected to the external environment. The narrow channel 211 has little effect on gas discharge, and the gas can be discharged smoothly. The narrow channel 211 has a greater effect on the molten metal liquid, and reduces the metal liquid from entering the narrow channel 211 through fluid resistance; the wide channel 212 is convenient for gas discharge, and an inclined inclined passage 213 is arranged between the narrow channel 211 and the wide channel 212. The inclined passage 213 can prevent the molten metal liquid from entering the wide channel 212, thereby ensuring smooth exhaust and preventing the molten metal liquid from flowing out.

[0046] In the embodiment of the present application, the surface of the narrow channel 211 is smoothly set, the wide channel 212 is trumpet-shaped, and one end of the narrow mouth of the wide channel 212 is connected to the narrow channel 211. The air in the cavity can be discharged through the narrow channel 211, while reducing the friction between the molten metal and the inner wall of the narrow channel 211, avoiding adhesion and accumulation caused by friction, and facilitating the pulling out of the narrow channel 211 after the molten metal liquid solidifies; the wide channel 212 is convenient for pressure relief so that the gas can be discharged in time.

[0047] like Figure 6 and Figure 7As shown, the check member 22 includes a limit ring 221 and an elastic flap 222. The limit ring 221 and the elastic flap 222 are integrally formed. The limit ring 221 is provided with a through hole 224. The through hole 224 is connected to the end of the wide channel 212 away from the narrow channel 211. The elastic flap 222 is movably arranged on a side of the limit ring 221 close to the through hole 224, and the elastic flap 222 is arranged opposite to the through hole 224. When the air in the cavity flows along the exhaust channel 21, the elastic flap 222 can be blown to separate the elastic flap 222 from the limit ring 221 to form a gap, so that the air flows through the through hole 224 through the gap and is discharged to the external environment. At the same time, when no exhaust is performed, the elastic flap 222 is reset to abut against the limit ring 221, so that the through hole 224 is sealed to form a chamber, thereby limiting the flow of molten metal liquid.

[0048] In the embodiment of the present application, two elastic flaps 222 are provided, and the two elastic flaps 222 are arranged opposite to each other and overlapped. The overlapping arrangement of the two elastic flaps 222 enhances the sealing effect of the check member 22, and reduces the risk of molten metal flowing out while allowing gas to be discharged; and the elastic flap 222 can ensure the closure of the exhaust duct 21 when no exhaust is performed, thereby improving the problem of external impurities entering through the exhaust duct 21 in the existing die-casting mold with a deep cavity structure.

[0049] Please refer to Figure 6 and Figure 7 The thickness of the limiting ring 221 is greater than that of the elastic petal 222, so as to provide sufficient structural strength and stability to support and fix the elastic petal 222; the limiting ring 221 is also provided with a wrinkled portion 223, between the wrinkled portion 223 and the limiting ring 221, especially between the side end of the elastic petal 222 and the junction of the limiting ring 221, for ensuring the movement and stability of the elastic petal 222, especially the stability in the process of the two elastic petals 222 moving to connect and close the through hole 224 with the external environment.

[0050] It should be noted that, in the embodiment of the present application, the limiting ring 221, the elastic petal 222 and the corrugated portion 223 are all obtained by injection molding of silicone rubber, and the silicone rubber can ensure the elasticity and durability of the limiting ring 221, the elastic petal 222 and the corrugated portion 223, and can also make the limiting ring 221, the elastic petal 222 and the corrugated portion 223 have a certain flexibility; in the embodiment of the present application, the exhaust insert 2 is arranged in an arc shape at one end close to the main body 1, and the cross-sectional shape of the narrow channel 211 is an arc shape; the arc-shaped narrow channel 211 can reduce turbulence and eddy currents during gas flow, thereby improving the exhaust efficiency.

[0051] Specifically, when molten metal is injected into the deep cavity 11 and the shallow cavity 12 of the main body 1, especially when molten metal is injected into the deep cavity 11, the molten metal drives the air in the deep cavity 11 to enter the exhaust passage 21 of the exhaust insert 2. The air flows through the narrow passage 211, the inclined passage 213 and the wide passage 212 in sequence and then blows the elastic flaps 222 to separate the two overlapping elastic flaps 222. A gap is formed after the two overlapping elastic flaps 222 are separated. Finally, the air in the deep cavity 11 flows out from the gap formed after the two overlapping elastic flaps 222 are separated, thereby completing the exhaust of the deep cavity 11.

[0052] When the deep cavity 11 of the main body 1 completes exhaust, the elastic flap 222 returns to its original position and closes the exhaust passage 21 to prevent external impurities from entering the cavity, thereby improving the problem of external impurities entering through the exhaust passage 21 in existing die-casting molds with a deep cavity structure; the molten metal contacts the side of the exhaust insert 2 close to the main body 1, and at this time the narrow passage 211 prevents the molten metal from entering the narrow passage 211 through fluid resistance.

[0053] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A die-casting mold with a deep cavity exhaust structure, characterized in that: include: The body (1) is provided with a cavity, the cavity comprising a deep cavity (11) and a shallow cavity (12), the deep cavity (11) being connected to the shallow cavity (12); An exhaust insert (2), the exhaust insert (2) being detachably arranged on a side of the body (1) away from the cavity, the exhaust insert (2) being provided with an exhaust passage (21), the exhaust passage (21) being in communication with the deep cavity (11) and the external environment, and a check piece (22) being detachably arranged on one end of the exhaust insert (2) away from the body (1), the check piece (22) being in communication with the exhaust passage (21); The exhaust passage (21) comprises a narrow passage (211) and a wide passage (212), the narrow passage (211) is in communication with the deep cavity (11) and the wide passage (212), and one end of the wide passage (212) away from the narrow passage (211) is in communication with the external environment; The check member (22) comprises a limiting ring (221) and an elastic flap (222); the limiting ring (221) and the elastic flap (222) are integrally formed; the limiting ring (221) is provided with a through hole (224); the through hole (224) is communicated with an end of the wide channel (212) away from the narrow channel (211); the elastic flap (222) is movably arranged on one side of the limiting ring (221); and the elastic flap (222) and the through hole (224) are arranged opposite to each other; The elastic flap (222) is provided with two pieces, and the two pieces of the elastic flap (222) are arranged to overlap.

2. The die-casting mold with a deep cavity exhaust structure according to claim 1, characterized in that: An inclined passage (213) is provided between the narrow passage (211) and the wide passage (212).

3. The die-casting mold with a deep cavity exhaust structure according to claim 1, characterized in that: The surface of the narrow channel (211) is arranged to be smooth.

4. The die-casting mold with a deep cavity exhaust structure according to claim 1, characterized in that: The wide channel (212) is trumpet-shaped, and one end of the narrow opening of the wide channel (212) is connected to the narrow channel (211).

5. The die-casting mold with a deep cavity exhaust structure according to claim 1, characterized in that: The thickness of the limiting ring (221) is greater than the thickness of the elastic petal (222).

6. The die-casting mold with a deep cavity exhaust structure according to claim 1, characterized in that: The limiting ring (221) is further provided with a wrinkle portion (223), wherein the wrinkle portion (223) is provided between the elastic flap (222) and the limiting ring (221), and the wrinkle portion (223) is used to ensure the stability of the movement of the elastic flap (222).

7. The die-casting mold with a deep cavity exhaust structure according to claim 6, characterized in that: The limiting ring (221), the elastic flap (222) and the wrinkled portion (223) are all made of silicone rubber.

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