Die-casting die with deep cavity exhaust structure

Abstract

The invention relates to the technical field of die-casting die equipment, and particularly discloses a die-casting die with a deep cavity exhaust structure, the die-casting die comprises a body and an exhaust insert, the body is provided with a cavity, the cavity comprises a deep cavity and a shallow cavity, the deep cavity is communicated with the shallow cavity, the exhaust insert is detachably arranged on the side, away from the cavity, of the body, the exhaust insert is provided with an exhaust passage, and the exhaust passage is communicated with the deep cavity. The exhaust passage is communicated with the deep cavity and the external environment, a non-return piece is detachably arranged at the end, away from the body, of the exhaust insert, and the non-return piece is communicated with the exhaust passage. The die-casting die with the deep cavity structure has the effect of solving the problem that external impurities enter an existing die-casting die with the deep cavity structure through an exhaust passage.

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 can easily lead to the entry of external impurities, affecting product quality. Summary of the Invention

[0004] In order to improve the problem of external impurities entering through the exhaust duct of existing die-casting molds 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 that adopts the following technical solutions: A die-casting mold with a deep cavity exhaust structure, comprising: The body is provided with a cavity, the cavity comprising a deep cavity and a shallow cavity, the deep cavity being in communication with the shallow cavity; An exhaust insert is detachably provided on a side of the main body away from the mold cavity, the exhaust insert is provided with an exhaust duct, the exhaust duct is connected to the deep cavity and the external environment, and a check piece is detachably provided on one end of the exhaust insert away from the main body, the check piece is connected to the exhaust duct.

[0006] By adopting the above technical solution, 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, which is convenient for the flow and filling of molten metal; an exhaust duct is provided 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. 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 not exhausting, 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.

[0007] 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.

[0008] By adopting the above technical solution, the narrow channel has little effect on gas discharge, allowing 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.

[0009] Preferably, an inclined passage is provided between the narrow passage and the wide passage.

[0010] 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.

[0011] Preferably, the surface of the narrow channel is smooth.

[0012] 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.

[0013] Preferably, the wide channel is trumpet-shaped, and one end of the narrow opening of the wide channel is connected to the narrow channel.

[0014] By adopting the above technical solution, the wide channel is convenient for pressure relief, so that the gas can be discharged smoothly.

[0015] 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 the 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.

[0016] 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 allowed.

[0017] Preferably, the elastic flaps are provided in two pieces, and the two elastic flaps are arranged to overlap.

[0018] By adopting the above technical solution, the overlapping arrangement of the two elastic petals enhances the sealing effect of the check member, reducing the risk of molten metal flowing out while allowing gas to be discharged.

[0019] Preferably, the thickness of the limiting ring is greater than the thickness of the elastic petal.

[0020] 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.

[0021] Preferably, the limiting ring is further provided with a wrinkle portion, and 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.

[0022] By adopting the above technical solution, the wrinkled portion helps to maintain the stability of the elastic flap during the opening and closing process.

[0023] Preferably, the limiting ring, the elastic flap and the wrinkled portion are all made of silicone rubber.

[0024] By adopting the above technical solution, the limiting ring, the elastic petal and the wrinkled part are made of silicone rubber, which can ensure elasticity and durability and also have a certain degree of flexibility.

[0025] In summary, this application includes at least one of the following beneficial technical effects: 1. The mold cavity of the main body consists of a deep cavity and a shallow cavity, which are interconnected, allowing the mold to 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 provided inside the exhaust insert, which is connected to 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 mold cavity during the exhaust process, and at the same time prevent the molten metal in the mold cavity from flowing into the exhaust duct when the exhaust is not in progress, thereby protecting the mold and improving product quality. It also solves the problem of external impurities entering through the exhaust duct in existing die-casting molds with deep cavity structures; 2. Narrow channels have little effect on gas discharge, allowing gas to be discharged smoothly. Narrow channels have a greater impact on molten metal liquid, reducing the metal liquid from entering the narrow channels through fluid resistance; wide channels facilitate gas discharge; 3. The smoothly transitioned curved surface can avoid airflow obstruction and ensure smooth exhaust. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a die-casting mold with a deep cavity exhaust structure in the embodiment of the present application; Figure 2 2 is a bottom view of a die-casting mold with a deep cavity exhaust structure in an embodiment of the present application; Figure 3 is a schematic structural diagram of an exhaust insert in an embodiment of the present application; Figure 4 is a side view of an exhaust insert in an embodiment of the present application; Figure 5 is a top view of the exhaust insert in an embodiment of the present application; Figure 6 yes Figure 5 Sectional view along line AA; Figure 7This is a bottom view of the exhaust insert in an embodiment of the present application.

[0027] Explanation of the accompanying reference numerals: 1. Main body; 11. Deep cavity; 12. Shallow cavity; 2. Exhaust insert; 21. Exhaust duct; 211. Narrow channel; 212. Wide channel; 213. Inclined passage; 22. Check member; 221. Limiting ring; 222. Elastic flap; 223. Corrugated portion; 224. Through hole. DETAILED DESCRIPTION

[0028] The following is combined with Figure 1-7 This application is described in further detail.

[0029] The embodiment of the present application 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 body 1 and an exhaust insert 2.

[0030] like Figure 1 and Figure 3 As shown, the main body 1 is provided with a mold 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 mold cavity of the main body 1 is composed of a deep cavity 11 and a 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, which is convenient for the flow and filling of molten metal.

[0031] 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.

[0032] like Figure 4 and Figure 5 As 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 exhaust insert 2 is detachably provided with a check member 22 at one end away from the main body 1 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 there is no exhaust, thereby protecting the mold and improving product quality, and improving the problem of external impurities entering the existing die-casting mold with a deep cavity structure through the exhaust duct 21.

[0033] like Figure 6 and Figure 7As 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 can discharge the gas 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 facilitates gas discharge. An inclined inclined passage 213 is provided 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, ensuring smooth exhaust while preventing the molten metal liquid from flowing out.

[0034] 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 mold 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.

[0035] like Figure 6 and Figure 7 As shown, the check member 22 includes 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 connected to the end of the wide channel 212 away from the narrow channel 211. The elastic flap 222 is movably arranged on the side of the limiting 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 limiting ring 221 to form a gap, so that the air flows through the gap through the through hole 224 and is discharged to the external environment. At the same time, when there is no exhaust, the elastic flap 222 is reset to abut against the limiting ring 221, so that the through hole 224 is sealed to form a chamber, thereby limiting the flow of molten metal liquid.

[0036] In an embodiment of the present application, two elastic petals 222 are provided, and the two elastic petals 222 are arranged opposite to each other and overlapped. The overlapping arrangement of the two elastic petals 222 enhances the sealing effect of the check member 22, reducing the risk of molten metal flowing out while allowing gas to be discharged; and the elastic petals 222 can ensure the closure of the exhaust duct 21 when no exhaust is performed, thereby improving the problem of external impurities entering the exhaust duct 21 in the existing die-casting mold with a deep cavity structure.

[0037] Please refer to Figure 6 and Figure 7The thickness of the limiting ring 221 is greater than the thickness 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 limiting ring 221. It is used to ensure 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.

[0038] 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. 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.

[0039] 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 into the exhaust duct 21 of the exhaust insert 2. The air flows through the narrow channel 211, the inclined passage 213 and the wide channel 212 in sequence and then blows the elastic petals 222 to separate the two overlapping elastic petals 222. A gap is formed after the two overlapping elastic petals 222 are separated. Finally, the air in the deep cavity 11 flows out from the gap formed after the two overlapping elastic petals 222 are separated, completing the exhaust of the deep cavity 11.

[0040] 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 channel 21 to prevent external impurities from entering the cavity, thereby improving the problem of external impurities entering the exhaust channel 21 in existing die-casting molds with a deep cavity structure; the molten metal liquid contacts the side of the exhaust insert 2 close to the main body 1, and at this time the narrow channel 211 prevents the metal liquid from entering the narrow channel 211 through fluid resistance.

[0041] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection 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 main body (1) away from the cavity, the exhaust insert (2) being provided with an exhaust duct (21), the exhaust duct (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 main body (1), the check piece (22) being in communication with the exhaust duct (21).

2. The die-casting mold with a deep cavity exhaust structure according to claim 1, characterized in that: 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.

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

4. The die-casting mold with a deep cavity exhaust structure according to claim 2, characterized in that: The surface of the narrow channel (211) is arranged to be smooth.

5. The die-casting mold with a deep cavity exhaust structure according to claim 2, 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).

6. The die-casting mold with a deep cavity exhaust structure according to claim 5, characterized in that: 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 connected to 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.

7. The die-casting mold with a deep cavity exhaust structure according to claim 6, characterized in that: The elastic flap (222) is provided with two pieces, and the two pieces of the elastic flap (222) are arranged to overlap.

8. The die-casting mold with a deep cavity exhaust structure according to claim 6, characterized in that: The thickness of the limiting ring (221) is greater than the thickness of the elastic petal (222).

9. The die-casting mold with a deep cavity exhaust structure according to claim 6, 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).

10. The die-casting mold with a deep cavity exhaust structure according to claim 9, 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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