Die-casting die and exhaust structure thereof

Abstract

The die-casting die comprises a fixed die body and a movable die body, the fixed die body and the movable die body can form a die-casting cavity, the die-casting cavity comprises a product cavity and at least one cinder ladle used for containing materials overflowing from the product cavity, and the tail end of the cinder ladle is connected with the exhaust structure. The exhaust structure comprises a fixed mold exhaust plate arranged on the fixed mold and a movable mold exhaust plate arranged on the movable mold; and when the fixed mold and the movable mold are assembled, the fixed mold exhaust plate and the movable mold exhaust plate are paired and combined to define an exhaust channel of the cinder ladle, the exhaust channel comprises at least two sections of exhaust channels which are connected in sequence, and the at least two connected exhaust channels are arranged at a preset included angle. According to the die-casting die, through the exhaust structure, the exhaust path can be increased, then a large exhaust gap can be selected, the exhaust effect can be improved, and the situation that casting liquid residues are condensed to block the exhaust channel is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of die-casting technology, and more specifically to a die-casting mold and an exhaust structure thereof. Background Art

[0002] During the die-casting process, part of the aluminum alloy liquid is blocked by the complex cavity wall of the mold during filling, forming a metal layer containing gas. Since the aluminum liquid is filled at high speed in a jetting manner during the filling process, the aluminum liquid will splash and tumble to form a vortex, which can easily draw the gas into the product, that is, pores are formed in the product. Automotive die-cast structural parts that use aluminum instead of steel have high requirements for strength and mechanical properties. If the product contains pores, during the T6 or T7 heat treatment process, the product will produce bulges of varying sizes due to the increase in temperature. The product is prone to stress weak points during use, resulting in serious safety accidents such as breakage.

[0003] Therefore, the die-casting mold generally needs to be equipped with an exhaust structure to effectively exhaust the gas in the cavity during the die-casting process. However, the current exhaust structures either have poor exhaust effects or are prone to clogging, making them difficult to balance.

[0004] In summary, how to solve the problem of poor exhaust effect and easy clogging in the exhaust structure of the die-casting mold has become a technical problem that needs to be solved urgently by technical personnel in this field. Summary of the invention

[0005] In view of this, the present invention provides a die-casting mold and an exhaust structure thereof to solve the problems of poor exhaust effect and easy clogging of the exhaust structure of the die-casting mold.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A die-casting mold, comprising a fixed mold and a movable mold, wherein the fixed mold and the movable mold can form a die-casting cavity, wherein the die-casting cavity comprises a product cavity and at least one slag bag for accommodating overflowed materials from the product cavity, wherein an exhaust structure is connected to the end of at least one of the slag bags, wherein the exhaust structure comprises a fixed mold exhaust plate disposed on the fixed mold and a movable mold exhaust plate disposed on the movable mold;

[0008] Among them, when the fixed mold and the movable mold are assembled, the fixed mold exhaust plate and the movable mold exhaust plate are paired and combined and surrounded to form an exhaust channel, and the exhaust channel includes at least two exhaust channels connected in sequence, and at least two of the exhaust channels connected to each other are arranged at a preset angle.

[0009] Optionally, the fixed mold exhaust plate is provided with first planar teeth arranged in sequence along the extension direction of the exhaust channel, and the movable mold exhaust plate is provided with second planar teeth arranged in sequence along the extension direction of the exhaust channel, the tooth peaks of the first planar teeth and the tooth valleys of the second planar teeth are gap-fitted in a one-to-one manner, and the tooth valleys of the first planar teeth and the tooth peaks of the second planar teeth are gap-fitted in a one-to-one manner; wherein the fitting gap between the first planar teeth and the second planar teeth forms the exhaust channel.

[0010] Optionally, the first planar teeth are configured as a concave die formed on the fixed die exhaust plate, and the second planar teeth are configured as a convex die formed on the movable die exhaust plate;

[0011] Alternatively, the first planar teeth are configured as a convex die formed on the fixed mold exhaust plate, and the second planar teeth are configured as a concave die formed on the movable mold exhaust plate.

[0012] Optionally, the tooth height of the punch is configured to be 6 mm ± 1 mm; and / or, the punch is configured to be a punch formed by wire cutting; and / or, the die is configured to be a die formed by spark erosion.

[0013] Optionally, the exhaust cross-sectional area of ​​the exhaust channel is S1, and the cross-sectional area of ​​the slag bag opening corresponding to the end of the slag bag connected to the exhaust channel is S2, wherein S1 is greater than 0.5 times S2 and less than 1.2 times S2.

[0014] Optionally, the length of the exhaust path of the exhaust channel is B, the exhaust gap of the exhaust structure is A, and A and B satisfy the relationship: (Bc) / B=2(A-0.5) / k; wherein, B>c, A>0.5mm, the value range of c is 60mm-80mm, and the value range of k is 1.2-1.5.

[0015] Optionally, the exhaust channel is formed by two sections of the exhaust channel connected at the preset angle, and the two sections of the exhaust channel are respectively the first exhaust channel and the second exhaust channel, wherein the first end of the first exhaust channel is connected to the end of the slag bag, the second end of the first exhaust channel is connected to the first end of the second exhaust channel, and the second end of the second exhaust channel is the exhaust port.

[0016] Optionally, the preset angle is configured as 90°±20°; and / or, there are multiple slag bags, at least two of which are connected to the same exhaust structure, or each slag bag is connected to a different exhaust structure.

[0017] Compared with the background technology introduction, the above-mentioned die-casting mold includes a fixed mold and a movable mold. The fixed mold and the movable mold can be assembled to form a die-casting cavity. The die-casting cavity includes a product cavity and at least one slag bag for accommodating overflow materials from the product cavity. The end of at least one slag bag is connected to an exhaust structure, and the exhaust structure includes a fixed mold exhaust plate arranged on the fixed mold and a movable mold exhaust plate arranged on the movable mold; wherein, when the fixed mold and the movable mold are assembled, the fixed mold exhaust plate and the movable mold exhaust plate are paired and combined to enclose an exhaust channel for the slag bag, and the exhaust channel includes at least two exhaust ducts connected in sequence, and at least two exhaust ducts connected to each other are arranged at a preset angle. In actual application, after the fixed mold and the movable mold are assembled, the fixed mold exhaust plate and the movable mold exhaust plate are just matched and combined to enclose an exhaust channel of the slag bag. Since the exhaust channel includes at least two mutually connected exhaust channels arranged at a preset angle, compared with the traditional exhaust structure adopting a linear extension from the end of the slag bag to the exhaust port, on the basis of the fixed mold exhaust plate and the movable mold exhaust plate of the same size, that is, on the basis of the unchanged straight-line distance from the end of the slag bag to the exhaust port, the exhaust channel adopted in the present invention can increase the exhaust path. Due to the extension of the exhaust path, the exhaust structure can be designed with a larger exhaust gap, which helps to improve the exhaust effect and avoids excessive temperature drop near the end of the exhaust channel, thereby reducing the condensation of casting residue to block the exhaust channel.

[0018] In addition, the present invention also provides an exhaust structure, which is applied to a die-casting mold, including a fixed mold exhaust plate arranged on the fixed mold of the die-casting mold and a movable mold exhaust plate arranged on the movable mold of the die-casting mold; wherein, when the fixed mold and the movable mold are assembled, the fixed mold exhaust plate and the movable mold exhaust plate are paired and combined and surrounded to form an exhaust channel of the die-casting mold, and the exhaust channel includes at least two sections of exhaust channels connected in sequence, and at least two of the exhaust channels connected to each other are arranged at a preset angle. Since the exhaust structure applied to the die-casting mold and the aforementioned die-casting mold belong to the same general inventive concept, the two have the same core idea, and therefore, the exhaust structure should also have corresponding technical effects, which will not be repeated here.

[0019] Optionally, the preset angle is configured as 90°±20°;

[0020] And / or, the exhaust path length of the exhaust channel is B, the exhaust gap of the exhaust structure is A, and A and B satisfy the relationship: (Bc) / B=2(A-0.5) / k; wherein B>c, A>0.5mm, c is in the range of 60mm-80mm, and k is in the range of 1.2-1.5;

[0021] And / or, the fixed mold exhaust plate is provided with first planar teeth arranged in sequence along the extension direction of the exhaust channel, and the movable mold exhaust plate is provided with second planar teeth arranged in sequence along the extension direction of the exhaust channel, the tooth peaks of the first planar teeth and the tooth valleys of the second planar teeth are gap-fitted in a one-to-one manner, and the tooth valleys of the first planar teeth and the tooth peaks of the second planar teeth are gap-fitted in a one-to-one manner; wherein the fitting gap between the first planar teeth and the second planar teeth forms the exhaust channel, and the tooth height is configured to be 6mm±1mm. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention 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 present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 A schematic diagram of the axial structure of the exhaust structure provided by an embodiment of the present invention;

[0024] Figure 2 A schematic diagram of a top view of an exhaust structure provided in an embodiment of the present invention;

[0025] Figure 3 for Figure 2 AA cross-sectional structural diagram;

[0026] Figure 4 for Figure 2 BB cross-sectional structure diagram;

[0027] Figure 5 A schematic diagram of the structure of the fixed mold exhaust plate and the movable mold exhaust plate provided in an embodiment of the present invention before being combined at a first viewing angle;

[0028] Figure 6 A schematic diagram of the structure of the fixed mold exhaust plate and the movable mold exhaust plate provided in an embodiment of the present invention before being combined at a second viewing angle;

[0029] Figure 7 A schematic diagram of the axial structure of a movable mold exhaust plate provided in an embodiment of the present invention;

[0030] Figure 8 A schematic diagram of the axial structure of a fixed die exhaust plate provided in an embodiment of the present invention;

[0031] Fig. 9 A schematic diagram of the structure of a movable die and a fixed die assembly of a die-casting die provided in an embodiment of the present invention;

[0032] Fig.10A schematic structural diagram of a die-casting cavity on one side of a fixed die corresponding to a mating surface provided by an embodiment of the present invention;

[0033] Fig.11 A schematic structural diagram of the die-casting cavity on one side of the movable mold corresponding to the mating surface provided in an embodiment of the present invention.

[0034] in, Figure 1-Figure 11 middle:

[0035] Exhaust structure 10, fixed mold exhaust plate 11, first flat teeth 110, movable mold exhaust plate 12, second flat teeth 120, exhaust channel 13, first exhaust channel 131, second exhaust channel 132;

[0036] Slag bag 21, product cavity 22, flow channel 23;

[0037] Fixed mold 31 and movable mold 32. DETAILED DESCRIPTION

[0038] The core of the present invention is to provide a die-casting mold and an exhaust structure thereof, so as to solve the problems that the exhaust structure of the die-casting mold has poor exhaust effect and is easy to be blocked.

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] Reference Figure 1-Figure 11 As shown, the present invention specifically provides a die-casting mold, including a fixed mold 31 and a movable mold 32. The fixed mold 31 and the movable mold 32 can form a die-casting cavity. The die-casting cavity generally includes a slag bag 21, a product cavity 22 and a runner 23, wherein the product cavity 22 corresponds to the shape of the product to be manufactured, and the runner 23 is mainly used to transport the casting liquid to the product cavity 22. The casting liquid can generally be injected into the runner 23 in a spraying manner, but not limited to. The material of the casting liquid can be selected and set according to the material of the product, such as aluminum liquid, etc. The slag bag 21 is connected to the product cavity 22, and is mainly used to accommodate the material overflowing from the product cavity 22. By connecting the exhaust structure 10 with the end (i.e., the slag bag mouth) of at least one slag bag 21, the gas in the die-casting cavity during the die-casting process can be effectively discharged.

[0041] The exhaust structure 10 may specifically include a fixed mold exhaust plate 11 arranged on the fixed mold and a movable mold exhaust plate 12 arranged on the movable mold; the fixed mold exhaust plate 11 may be specifically designed to be an integrally formed structure with the fixed mold 31, or may be designed to be a split fixed connection structure, such as a fastener connection or a welding connection; similarly, the movable mold exhaust plate 12 may be specifically designed to be an integrally formed structure with the movable mold 32, or may be designed to be a split fixed connection structure, such as a fastener connection or a welding connection; in addition, when the fixed mold 31 and the movable mold 32 are assembled, the fixed mold exhaust plate 11 and the movable mold exhaust plate 12 are paired and combined to enclose an exhaust channel 13 of the die-casting mold, and the exhaust channel 13 includes at least two exhaust channels connected in sequence, and at least two exhaust channels connected to each other are arranged at a preset angle. For example, the exhaust channel 13 can be specifically formed by two sections of exhaust channels connected at a preset angle. For the convenience of description, the two sections of exhaust channels are defined as a first exhaust channel 131 and a second exhaust channel 132, wherein the first end of the first exhaust channel 131 is used to connect with the end of the corresponding slag bag 21 in the cavity of the die-casting mold, the second end of the first exhaust channel 131 is connected to the first end of the second exhaust channel 132, and the second end of the second exhaust channel 132 is used to connect with the vacuum unit. The preset angle can be specifically configured as 90°±20°. By designing into this structural form, the first exhaust channel 131 and the second exhaust channel 132 are basically arranged vertically or approximately vertically, that is, the exhaust channel 13 is an L-shaped structure, which can make the fixed mold exhaust plate 11 and the movable mold exhaust plate 12 have a longer exhaust path relative to the exhaust plates of the same length. Of course, it can be understood that the above-mentioned preset angle arrangement of 90°±20° is only a preferred example of an embodiment of the present invention. In actual application, other preset angle values ​​can also be designed, such as 90°±10°, 90°±5°, and no other specific limitations are made here.

[0042] In the actual application process of the die-casting mold, when the fixed mold 31 and the movable mold 32 are assembled, the fixed mold exhaust plate 11 and the movable mold exhaust plate 12 are just matched and combined to enclose the exhaust channel 13 of the die-casting mold. Since the exhaust channel 13 includes at least two mutually connected exhaust channels arranged at a preset angle, compared with the traditional linear exhaust channel (that is, the exhaust channel adopts a linear extension from the end of the slag bag to the exhaust port), on the basis of the fixed mold exhaust plate 11 and the movable mold exhaust plate 12 of the same size, that is, on the basis of the linear distance from the end of the slag bag to the exhaust port being unchanged, the exhaust structure 10 adopted by the present invention can increase the exhaust channel diameter, and then compared with the traditional linear exhaust structure, the exhaust structure 10 adopted in the present invention can select a larger exhaust gap, which is helpful to improve the exhaust effect. At the same time, compared with the traditional exhaust structure, in order to prevent the aluminum liquid from splashing, the gap near the end of the exhaust channel 13 will be made smaller, which may easily cause the aluminum liquid to drop too much in temperature here. The present application can select a larger exhaust gap, thereby reducing the risk of condensation of the casting residue blocking the exhaust channel; in addition, since at least two exhaust channels connected to each other are arranged at a preset angle, the casting will be subject to turning resistance at the preset angle position when filling the exhaust channel, thereby effectively preventing the casting from blocking the exhaust port of the exhaust channel.

[0043] In some specific embodiments, the fixed mold exhaust plate 11 may be provided with first planar teeth 110 sequentially arranged along the extension direction of the exhaust channel 13, and the movable mold exhaust plate 12 may be provided with second planar teeth 120 sequentially arranged along the extension direction of the exhaust channel 13, the tooth peaks of the first planar teeth 110 and the tooth valleys of the second planar teeth 120 are gap-fitted in a one-to-one manner, and the tooth valleys of the first planar teeth 110 and the tooth peaks of the second planar teeth 120 are gap-fitted in a one-to-one manner; wherein the fitting gap between the first planar teeth 110 and the second planar teeth 120 forms the exhaust channel 13. The structural form of the above-mentioned first plane teeth 110 and the second plane teeth 120 is similar to the tooth structure on a washboard. By designing into this structural form, the first plane teeth 110 and the second plane teeth 120 can cooperate to form a serrated exhaust path on the extension path of the exhaust channel 13, which is beneficial to improve the flow resistance of the casting liquid in the exhaust gap, and helps to make the molding of the product cavity 22 more complete during the die-casting process; in addition, it can also improve the actual flow path of the exhaust, which helps to design the exhaust gap to be larger.

[0044] In a further embodiment, the first flat teeth 110 can be configured as a concave mold formed on the fixed mold exhaust plate 11, and the second flat teeth 120 can be configured as a convex mold formed on the movable mold exhaust plate 12; or the first flat teeth 110 can be configured as a convex mold formed on the fixed mold exhaust plate 11, and the second flat teeth 120 can be configured as a concave mold formed on the movable mold exhaust plate 12. By designing the structure of the above-mentioned convex mold and concave mold to cooperate, the fixed mold exhaust plate 11 and the movable mold exhaust plate 12 can be tightly pressed to form the required exhaust channel 13, and the structure is simpler and convenient for processing and manufacturing.

[0045] It should be noted that the tooth height of the above-mentioned punch generally needs to be optimally configured. If the tooth height is too high, the casting (such as aluminum) is easy to break when the material is removed after the die casting is completed, and the casting (such as aluminum) is easy to stick to the fixed die exhaust plate 11 and the movable die exhaust plate 12, so that the die cannot be continuously produced and needs to be manually cleaned before it can be used again. After continuous exploration, the applicant found that configuring the tooth height of the above-mentioned punch to 6mm±1mm is a more preferred value, which can basically ensure the strength of the casting and is not easy to stick to the fixed die exhaust plate 11 and the movable die exhaust plate 12.

[0046] In some specific implementation schemes, the male mold body can be configured as a male mold made by wire cutting; the female mold configuration can be specifically selected as a female mold made by spark erosion. Through the above processing method, the processing accuracy of the male mold and the female mold is easier to ensure. Of course, it can be understood that the above processing method is only a preferred example of the embodiment of the present invention. In actual application, other processing methods can also be selected according to actual needs and processing convenience, and no more specific limitations are made here.

[0047] It should be noted that the applicant accidentally discovered that the exhaust cross-section of the exhaust channel 13 and the cross-sectional area of ​​the corresponding slag bag mouth in the cavity of the die-casting mold both have a certain influence on the quality of the workpiece finally produced by the die-casting mold. If the exhaust cross-section of the exhaust channel 13 is too large, the pressure on the die will be too large, which will cause the mold to expand during the die-casting process, and the material will escape during the die-casting process, resulting in unqualified die-casting of the workpiece; if the exhaust cross-section of the exhaust channel 13 is too small, it will cause poor exhaust. The exhaust cross-sectional area of ​​the exhaust channel 13 is defined as S1, and the cross-sectional area of ​​the corresponding slag bag mouth in the cavity of the die-casting mold connected to the exhaust channel 13 is defined as S2, wherein S1 and S2 satisfy the relationship: when S1 is greater than 0.5 times S2, and less than 1.2 times S2, the workpiece can be guaranteed to be qualified, and the occurrence of unqualified die-casting of the above-mentioned workpiece can be effectively avoided.

[0048] It should also be noted that there is a certain relationship between the exhaust path of the exhaust channel 13 and the exhaust gap of the exhaust structure 10. If the exhaust path is long and the exhaust gap is too large, there will be splashing (that is, the casting liquid splashes out from the exhaust vacuum equipment); if the exhaust gap is large and the exhaust path is too short, it will also cause splashing; if the exhaust gap is too small, it is easy for the casting liquid (such as aluminum liquid) to block the exhaust port. In order to conveniently describe the relationship between the length of the exhaust path and the exhaust gap of the exhaust structure 10, the length of the exhaust path of the exhaust channel 13 is defined as B, and the exhaust gap of the exhaust structure 10 is defined as A, wherein A and B can achieve a more ideal effect when satisfying the relationship: (Bc) / B=2(A-0.5) / k, which can not only avoid splashing, but also prevent the casting liquid from blocking the exhaust port; wherein, B>c, A>0.5mm (the preferred value of A is about 1mm), the value range of c is 60mm-80mm, and the value range of k is 1.2-1.5.

[0049] It should be noted that the number of slag bags 21 in the die-casting cavity of the above-mentioned die-casting mold can be one or more, and can be configured according to actual needs during actual application, and at least one slag bag 21 is connected to the exhaust structure 10. Among them, when the number of slag bags 21 in the die-casting cavity is multiple, it can be designed that at least two slag bags 21 are connected to the same exhaust structure 10; it can also be designed that each slag bag 21 is connected to a different exhaust structure 10; it can also be designed that only one exhaust structure 10 is connected after one slag bag 21. In the actual application process, it can be specifically configured according to actual needs, and no more specific restrictions are made here.

[0050] In addition, the present invention also provides an exhaust structure 10, which is applied to the die-casting mold to exhaust the die-casting cavity in the die-casting mold, so as to make the die-casting molding effect more perfect. The exhaust structure 10 can specifically include a fixed mold exhaust plate 11 and a movable mold exhaust plate 12, wherein the fixed mold exhaust plate 11 is arranged on the fixed mold 31 of the die-casting mold; the movable mold exhaust plate 12 is arranged on the movable mold 32 of the die-casting mold; when the fixed mold 31 and the movable mold 32 are assembled, the fixed mold exhaust plate 11 and the movable mold exhaust plate 12 are paired and combined and surrounded to form an exhaust channel 13 of the die-casting mold, and the exhaust channel 13 includes at least two sections of exhaust channels connected in sequence, and at least two exhaust channels connected to each other are arranged at a preset angle. Since the exhaust structure applied to the die-casting mold and the aforementioned die-casting mold belong to the same general inventive concept, the two have the same core idea, therefore, the exhaust structure should also have corresponding technical effects, which will not be repeated here.

[0051] It should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0052] As shown in this application and claims, unless the context clearly indicates an exception, the words "a", "an", "a kind" and / or "the" do not refer to the singular, but also include the plural. Generally speaking, the terms "include" and "comprise" only indicate the inclusion of clearly identified steps and elements, and these steps and elements do not constitute an exclusive list. The method or device may also include other steps or elements. The elements defined by the sentence "includes a..." do not exclude the existence of other identical elements in the process, method, commodity or device that includes the elements.

[0053] In the description of the embodiments of the present application, unless otherwise specified, " / " means or, for example, A / B can mean A or B; "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, in the description of the embodiments of the present application, "multiple" means two or more than two.

[0054] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0055] The principles and implementation methods of the present invention are described in this article using specific examples. The description of the above embodiments is only used to help understand the core idea of ​​the present invention. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, the present invention can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A die-casting mold, comprising a fixed mold (31) and a movable mold (32), wherein the fixed mold (31) and the movable mold (32) are assembled to form a die-casting cavity, wherein the die-casting cavity comprises a product cavity (22) and at least one slag bag (21) for accommodating overflow material from the product cavity (22), wherein at least one end of the slag bag (21) is connected to an exhaust structure (10), It is characterized in that The exhaust structure (10) comprises a fixed mold exhaust plate (11) arranged on the fixed mold and a movable mold exhaust plate (12) arranged on the movable mold; When the fixed mold (31) and the movable mold (32) are assembled, the fixed mold exhaust plate (11) and the movable mold exhaust plate (12) are paired and combined to enclose an exhaust channel (13), and the exhaust channel (13) includes at least two exhaust channels connected in sequence, and at least two of the exhaust channels connected to each other are arranged at a preset angle.

2. The die casting mold according to claim 1, It is characterized in that The fixed mold exhaust plate (11) is provided with first plane teeth (110) arranged in sequence along the extension direction of the exhaust channel (13), and the movable mold exhaust plate (12) is provided with second plane teeth (120) arranged in sequence along the extension direction of the exhaust channel (13), the tooth peaks of the first plane teeth (110) and the tooth valleys of the second plane teeth (120) are gap-fitted in a one-to-one correspondence manner, and the tooth valleys of the first plane teeth (110) and the tooth peaks of the second plane teeth (120) are gap-fitted in a one-to-one correspondence manner; wherein the fitting gap between the first plane teeth (110) and the second plane teeth (120) forms the exhaust channel (13).

3. The die casting mold according to claim 2, It is characterized in that The first plane teeth (110) are configured as a concave die formed on the fixed die exhaust plate (11), and the second plane teeth (120) are configured as a convex die formed on the movable die exhaust plate (12); Alternatively, the first planar teeth (110) are configured as a convex die formed on the fixed mold exhaust plate (11), and the second planar teeth (120) are configured as a concave die formed on the movable mold exhaust plate (12).

4. The die casting mold according to claim 3, It is characterized in that The tooth height of the punch is configured to be 6 mm ± 1 mm; and / or the punch is configured to be a punch formed by wire cutting; and / or the die is configured to be a die formed by spark erosion.

5. The die-casting mold according to any one of claims 1 to 4, It is characterized in that The exhaust cross-sectional area of ​​the exhaust channel (13) is S1, and the cross-sectional area of ​​the slag bag opening corresponding to the end of the slag bag (21) connected to the exhaust channel (13) is S2, wherein S1 is greater than 0.5 times S2 and less than 1.2 times S2.

6. The die-casting mold according to any one of claims 1 to 4, It is characterized in that The exhaust path length of the exhaust channel (13) is B, the exhaust gap of the exhaust structure (10) is A, and A and B satisfy the relationship: (Bc) / B=2(A-0.5) / k; wherein B>c, A>0.5mm, the value range of c is 60mm-80mm, and the value range of k is 1.2-1.

5.

7. The die-casting mold according to any one of claims 1 to 4, It is characterized in that The exhaust channel (13) is formed by two sections of the exhaust channel connected at the preset angle, and the two sections of the exhaust channel are respectively a first exhaust channel (131) and a second exhaust channel (132), wherein a first end of the first exhaust channel (131) is connected to an end of the slag bag (21), a second end of the first exhaust channel (131) is connected to a first end of the second exhaust channel (132), and a second end of the second exhaust channel (132) is an exhaust port.

8. The die casting mold according to claim 1 or 7, It is characterized in that The preset angle is configured to be 90°±20°; and / or, The number of the slag bags (21) is multiple, and at least two of the slag bags (21) are connected to the same exhaust structure (10), or each of the slag bags (21) is connected to a different exhaust structure (10).

9. An exhaust structure, applied to a die casting mold, It is characterized in that include: A fixed die exhaust plate (11) arranged on the fixed die (31) of the die-casting die; A movable die exhaust plate (12) is arranged on the movable die (32) of the die-casting die; When the fixed mold (31) and the movable mold (32) are assembled, the fixed mold exhaust plate (11) and the movable mold exhaust plate (12) are paired and combined to enclose an exhaust channel (13) of the die-casting mold, and the exhaust channel (13) includes at least two exhaust channels connected in sequence, and at least two of the exhaust channels connected to each other are arranged at a preset angle.

10. The exhaust structure according to claim 9, It is characterized in that The preset angle is configured as 90°±20°; And / or, the exhaust path length of the exhaust channel (13) is B, the exhaust gap of the exhaust structure (10) is A, and A and B satisfy the relationship: (Bc) / B=2(A-0.5) / k; wherein B>c, A>0.5mm, the value range of c is 60mm-80mm, and the value range of k is 1.2-1.5; And / or, the fixed mold exhaust plate (11) is provided with first planar teeth (110) arranged in sequence along the extension direction of the exhaust channel (13), and the movable mold exhaust plate (12) is provided with second planar teeth (120) arranged in sequence along the extension direction of the exhaust channel (13), the tooth peaks of the first planar teeth (110) and the tooth valleys of the second planar teeth (120) are gap-fitted in a one-to-one manner, and the tooth valleys of the first planar teeth (110) and the tooth peaks of the second planar teeth (120) are gap-fitted in a one-to-one manner; wherein the fitting gap between the first planar teeth (110) and the second planar teeth (120) forms the exhaust channel (13), and the tooth height is configured to be 6 mm±1 mm.

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