Pouring mold
By designing the area difference between the first overflow channel and the exhaust channel in the casting mold, the melt gradually solidifies in the exhaust channel, solving the problems of vacuum pump damage and manual intervention in the prior art, and achieving automated production and cost reduction.
Patent Information
- Application Number
- CN202422328944.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-24
- Publication Date
- 2025-07-29
- Estimated Expiration
- 2034-09-24
AI Technical Summary
The existing casting molds cannot effectively relieve pressure and exhaust gas after the melt is filled with the cavity, resulting in easy damage to the vacuum valve and vacuum pump, requiring manual intervention, increasing the equipment and labor costs.
A casting mold is designed, including a cavity, a first overflow channel, an exhaust channel and a second overflow channel. The cross-sectional area of the first overflow channel and the second overflow channel is smaller than that of the exhaust channel. The melt gradually solidifies in the exhaust channel, preventing the melt from entering the vacuum pump and preventing damage to the vacuum pump.
Automatically cut off the melt flow, avoiding manual intervention, reducing equipment and labor costs, improving production efficiency, and reducing equipment maintenance frequency.
Smart Images
Figure CN223161226U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of pouring equipment, in particular to a pouring mold. Background Art
[0002] In the existing pouring mold, the overflow port is connected to a vacuum valve through an overflow pipe, and finally the overflow pipe is connected to a vacuum pump for vacuum pumping; once the cavity is filled with the melt material, there is no place for the material to relieve pressure and exhaust air, which easily causes the material to flow towards the vacuum valve and the vacuum pump, resulting in the scrapping of the vacuum valve and the vacuum pump. Therefore, in the prior art, the discharge groove is often connected to the vacuum valve and the vacuum pump through a transparent overflow pipe. During the injection process, it is necessary for an experienced old employee to stare at the transparent overflow pipe intently. Once the material flows through the transparent pipe body, it is necessary to pinch the pipe body in time to cut off the material flow towards the valve body and the vacuum pump, otherwise it is easy to scrap the vacuum valve and the vacuum pump, resulting in high production equipment costs and labor costs. Content of the Utility Model
[0003] In view of this, the purpose of the utility model is to overcome the deficiencies in the prior art and provide a pouring mold.
[0004] The utility model provides the following technical solutions:
[0005] An embodiment of the present application provides a pouring mold, including a mold body. A cavity is provided in the mold body. The cavity has a feed port and a pressure relief groove. The pressure relief groove includes a first overflow channel, an exhaust channel, and a second overflow channel. The first overflow channel connects the cavity and the exhaust channel. The exhaust channel connects the second overflow channel. The first overflow channel, the exhaust channel, and the second overflow channel are arranged in sequence along the melt flow direction. The cross-sectional areas of the first overflow channel and the second overflow channel along a first plane are smaller than the cross-sectional area of the exhaust channel along the first plane. The first plane is perpendicular to the length direction of the first overflow channel.
[0006] In one embodiment, the first overflow channel and the second overflow channel are cylindrical channels.
[0007] In one embodiment, the inner diameter of the first overflow channel is D1, where 2.5 mm ≤ D1 ≤ 6.5 mm.
[0008] In one embodiment, the length of the first overflow channel is L1, where 25 mm ≤ L1 ≤ 160 mm.
[0009] In one embodiment, the inner diameter of the second overflow channel is D2, where 2.5 mm ≤ D2 ≤ 6.5 mm.
[0010] In one embodiment, the length of the second overflow channel is L2, wherein 25 mm ≤ L2 ≤ 160 mm.
[0011] In one embodiment, the exhaust channel is a rectangular chamber.
[0012] In one embodiment, the length of the exhaust channel is L3, wherein 80 mm ≤ L3 ≤ 150 mm; the depth of the exhaust channel is K, wherein 0.05 mm ≤ K ≤ 0.15 mm; and the temperature of the mold body is T, wherein 110° C. ≤ T ≤ 160° C.
[0013] In one embodiment, the pressure relief groove further includes an overflow groove, which is arranged between the mold cavity and the first overflow channel, and the overflow groove is connected to the mold cavity and the first overflow channel.
[0014] In one embodiment, the pressure relief groove further includes a curved overflow channel, and the curved overflow channel is arranged between the cavity and the overflow groove.
[0015] The embodiments of the utility model have the following advantages:
[0016] In the casting mold provided by the embodiment of the present application, the cross-sectional area of the first overflow channel is smaller than that of the exhaust channel, which reduces the flow rate of the melt in the exhaust channel, causing the melt to gradually solidify during its flow in the exhaust channel. The solidified melt will hinder the subsequent melt from flowing into the second overflow channel, thereby preventing the melt from entering the vacuum pump through the second overflow channel and damaging the vacuum pump. This avoids the need for workers to manually pinch the overflow pipe in the prior art, saving labor. In addition, the casting mold provided by the embodiment of the present application eliminates accessories such as the overflow pipe and vacuum valve in the prior art, reducing equipment costs and avoiding the need to manually replace the overflow pipe for each mold, thus saving labor and equipment costs.
[0017] In order to make the above-mentioned objects, features and advantages of the utility model more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the technical solutions of the utility model embodiments, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.
[0019] Figure 1A structural schematic diagram showing a partial structure of one embodiment of a casting mold provided by an embodiment of the present application from one perspective;
[0020] Figure 2 A schematic structural diagram showing a partial structure of one embodiment of a casting mold provided by an embodiment of the present application from two perspectives;
[0021] Figure 3 A three-view structural schematic diagram of a partial structure of one embodiment of a casting mold provided in an embodiment of the present application is shown.
[0022] Description of main component symbols:
[0023] 100-mold body; 110-movable mold; 120-static mold;
[0024] 200 - cavity; 210 - feed port; 220 - pressure relief groove; 230 - curved overflow channel; 240 - overflow groove; 250 - first overflow channel; 260 - exhaust channel; 270 - second overflow channel. DETAILED DESCRIPTION
[0025] The following describes in detail embodiments of the utility model, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the utility model and are not to be construed as limiting the utility model.
[0026] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. Conversely, when an element is referred to as being "directly on" another element, there is no intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only.
[0027] In utility models, unless otherwise expressly specified or limited, terms such as "installed," "connected," "connect," and "fixed" should be interpreted broadly. For example, they may refer to fixed or detachable connections, or integration; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of these terms in utility models based on specific circumstances.
[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of a utility model, "plurality" means two or more, unless otherwise specifically defined.
[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs. The terms used in the template specification herein are for the purpose of describing specific embodiments only and are not intended to limit the utility model. The term "and / or" as used herein includes any and all combinations of one or more of the relevant listed items.
[0030] The embodiment of the present application provides a casting mold, such as Figures 1 to 3 As shown, the casting mold includes a mold body 100, within which a cavity 200 is disposed. For example, the mold body 100 includes a movable mold 110 and a static mold 120. When the movable mold 110 and the static mold 120 are engaged, the cavity 200 is formed in the middle. It should be understood that in the field of casting, the technical terms or technical features of the movable mold 110 and the static mold 120 can also be replaced by upper mold and lower mold, etc., and should be considered within the scope of protection of this application.
[0031] like Figure 1 As shown, the cavity 200 has a feed port 210 and a pressure relief groove 220. Figure 1 As shown, part of the structure of the pressure relief groove 220 is arranged on the static mold 120, as shown in FIG. Figure 3 As shown, part of the pressure relief groove 220 is distributed on the movable mold 110 .
[0032] Exemplarily, the pressure relief groove 220 and the feed port 210 are sequentially arranged along the direction of gravity. Exemplarily, the feed port 210 is connected to a pouring machine, which melts the material into a melt and then injects it into the mold cavity 200 through the feed port 210. The melt solidifies in the mold cavity 200 to obtain the desired product. Exemplarily, the pressure relief groove 220 is connected to a vacuum pump of a vacuum box, which uses the vacuum pump to maintain a vacuum level in the mold cavity 200.
[0033] like Figure 2As shown, the pressure relief groove 220 includes a first overflow channel 250, an exhaust channel 260, and a second overflow channel 270. The first overflow channel 250 connects the cavity 200 and the exhaust channel 260, and the second overflow channel 270 communicates with a vacuum pump. Exemplarily, one end of the first overflow channel 250 is connected to the cavity 200, the other end of the first overflow channel 250 is connected to one end of the exhaust channel 260, the other end of the exhaust channel 260 is connected to one end of the second overflow channel 270, and the other end of the second overflow channel 270 is connected to the vacuum pump.
[0034] The first overflow channel 250, the exhaust channel 260, and the second overflow channel 270 are arranged in sequence along the melt flow direction, so that the gas in the cavity 200 successively passes through the first overflow channel 250, the exhaust channel 260, and the second overflow channel 270 and enters the vacuum pump.
[0035] As Figure 2 shown, the cross-sectional area of the first overflow channel 250 and the second overflow channel 270 along the first plane is smaller than the cross-sectional area of the exhaust channel 260 along the first plane. The first plane is perpendicular to the length direction of the first overflow channel 250, which reduces the flow velocity of the melt in the exhaust channel 260, so that the melt gradually solidifies during the flow in the exhaust channel 260. The melt of general materials will be completely solidified near the middle position of the exhaust channel 260. The solidified melt will prevent the subsequent flowing melt from flowing into the second overflow channel 270, thereby preventing the melt from entering the vacuum pump through the second overflow channel 270 and causing damage to the vacuum pump.
[0036] In the early stage of pouring, the pressure relief groove 220 is used to connect the cavity 200 and the vacuum pump of the vacuum box, so that the gas in the cavity 200 is discharged into the vacuum pump through the pressure relief groove 220. As the melt fills the cavity 200, if there is no pressure relief groove 220 for exhaust, the vacuum degree of the cavity 200 will become lower and lower, and the vacuum degree will be zero at the moment of being full. Then it is very easy to generate bubbles inside the product, and the probability of generating micro-bubbles is higher closer to the upper part, resulting in product scrapping. By setting the pressure relief groove 220, the cavity 200 and the vacuum pump are interconnected throughout the pouring process. After the melt fills the cavity 200, the cavity 200 still maintains a certain vacuum degree, ensuring product quality.
[0037] When the melt fills the entire cavity 200, the pressure relief groove 220 can be used to exhaust and discharge excess bubbles in the cavity 200; when all the bubbles are discharged from the cavity 200, the pressure relief groove 220 can block the melt from flowing out to the vacuum pump. Since the cross-sectional area of the first overflow channel 250 and the second overflow channel 270 along the first plane is smaller than the cross-sectional area of the exhaust channel 260 along the first plane, the pressure of the melt in the exhaust channel 260 is reduced and the flow rate is reduced. The melt gradually solidifies during the flow in the exhaust channel 260. The solidified melt hinders the subsequent unsolidified melt from continuing to flow, preventing the melt from entering the vacuum pump through the second overflow channel 270 and causing damage to the vacuum pump. This avoids the need for workers to manually pinch the overflow pipe in the prior art, saving labor. In addition, the casting mold provided by the embodiment of the present application eliminates accessories such as the overflow pipe and vacuum valve in the prior art, reducing equipment costs and avoiding the step of replacing the overflow pipe for each mold, further saving labor and equipment costs.
[0038] The casting mold provided in the embodiment of the present application automatically cuts off the melt flow through the provided pressure relief groove 220. Compared with the prior art, there is no need to manually replace the overflow pipe, which saves eight to ten minutes per mold production cycle and improves production efficiency.
[0039] like Figure 1 and Figure 2 As shown, in one embodiment, the first overflow channel 250 and the second overflow channel 270 are cylindrical channels.
[0040] The consistent cross-sectional shape of the cylindrical channel ensures relatively stable melt flow characteristics. This stable flow helps predict and control the melt's behavior, including its flow rate, pressure distribution, and solidification process.
[0041] The cylindrical channel has no complex internal structure and is therefore relatively easy to clean and maintain. During the pouring process, if there are impurities or residues in the melt, they can be more easily removed by cleaning or blowing to ensure smooth passage and the quality of the poured product.
[0042] The relatively uniform cross-section of a cylindrical channel makes it less likely to form dead corners or buildup, which helps reduce the risk of melt blockage within the channel. Blockage can interrupt the casting process or reduce product quality, so reducing the risk of blockage is an important factor in improving production efficiency and product quality.
[0043] In the design of pressure relief groove 220, one of the main functions of first overflow channel 250 and second overflow channel 270 is to guide the discharge of gas and excess melt within cavity 200. The cylindrical channels provide a more stable flow path, allowing gas and melt to be discharged more easily and smoothly, thereby improving the exhaust effect.
[0044] likeFigure 2 As shown, in one embodiment, the inner diameter of the first overflow channel 250 is D1, where 2.5 mm ≤ D1 ≤ 6.5 mm.
[0045] Exemplarily, the inner diameter D1 of the first overflow channel 250 = 2.5 mm. In some other embodiments, the inner diameter D1 of the first overflow channel 250 = 3 mm. In some other embodiments, the inner diameter D1 of the first overflow channel 250 = 4 mm. In some other embodiments, the inner diameter D1 of the first overflow channel 250 = 5 mm. In some other embodiments, the inner diameter D1 of the first overflow channel 250 = 6 mm. In some other embodiments, the inner diameter D1 of the first overflow channel 250 = 6.5 mm.
[0046] By setting a range of inner diameters instead of a fixed value for the first overflow channel 250, the casting mold can flexibly adapt to different production requirements and process conditions. Different values of the inner diameter can affect the flow rate of the melt in the channel, the pressure distribution, and the exhaust effect, thereby optimizing the casting process and product quality.
[0047] One of the main functions of the first overflow channel 250 is to guide the gas and excess melt in the cavity 200 to be discharged. By adjusting the size of the inner diameter D1, the exhaust effect can be optimized, the generation of defects such as bubbles and shrinkage cavities can be reduced, and the appearance quality and internal quality of the product can be improved.
[0048] By setting a reasonable range of inner diameters, a suitable configuration can be selected according to actual needs, thereby reducing production costs and waste.
[0049] As Figure 2 shown, in one embodiment, the length of the first overflow channel 250 is L1, where 25 mm ≤ L1 ≤ 160 mm.
[0050] Exemplarily, the length L1 of the first overflow channel 250 = 25 mm. In some other embodiments, the length L1 of the first overflow channel 250 = 30 mm. In some other embodiments, the length L1 of the first overflow channel 250 = 90 mm. In some other embodiments, the length L1 of the first overflow channel 250 = 120 mm. In some other embodiments, the length L1 of the first overflow channel 250 = 150 mm. In some other embodiments, the length L1 of the first overflow channel 250 = 160 mm.
[0051] By adjusting the size of the length L1 of the first overflow channel 250, the exhaust effect can be optimized, the generation of defects such as bubbles and shrinkage cavities can be reduced, and the appearance quality and internal quality of the product can be improved.
[0052] The length L1 of the first overflow channel 250 has a significant impact on the flow characteristics of the melt during the casting process. A shorter channel may cause the melt to flow faster, but it may also lead to insufficient exhaust; a longer channel may slow down the melt flow, but it helps the melt to cool and solidify better during the flow. By adjusting the channel length, precise control of the melt flow can be achieved, thereby optimizing the casting process.
[0053] As Figure 2 shown, in one embodiment, the inner diameter of the second overflow channel 270 is D2, where 2.5 mm ≤ D2 ≤ 6.5 mm.
[0054] Exemplarily, the inner diameter D2 of the second overflow channel 270 = 2.5 mm. In another embodiment, the inner diameter D2 of the second overflow channel 270 = 3 mm. In another embodiment, the inner diameter D2 of the second overflow channel 270 = 4 mm. In another embodiment, the inner diameter D2 of the second overflow channel 270 = 5 mm. In another embodiment, the inner diameter D2 of the second overflow channel 270 = 6 mm. In another embodiment, the inner diameter D2 of the second overflow channel 270 = 6.5 mm.
[0055] As Figure 2 shown, in one embodiment, the length of the second overflow channel 270 is L2, where 25 mm ≤ L2 ≤ 160 mm.
[0056] Exemplarily, the length L2 of the second overflow channel 270 = 25 mm. In another embodiment, the length L2 of the second overflow channel 270 = 30 mm. In another embodiment, the length L2 of the second overflow channel 270 = 90 mm. In another embodiment, the length L2 of the second overflow channel 270 = 120 mm. In another embodiment, the length L2 of the second overflow channel 270 = 150 mm. In another embodiment, the length L2 of the second overflow channel 270 = 160 mm.
[0057] As Figure 2 shown, in one embodiment, the exhaust channel 260 is a rectangular parallelepiped chamber. As a common geometric shape, the rectangular parallelepiped chamber has high structural stability in mechanical design. This shape can evenly distribute stress, reduce stress concentration caused by irregular shapes, and thus improve the overall strength and durability of the exhaust channel 260.
[0058] The design of the rectangular parallelepiped chamber helps to guide the gas in the cavity 200 to be discharged smoothly. Its regular geometric shape can reduce the resistance of gas flow, enable the gas to pass through the exhaust channel 260 faster, and thus reduce defects such as bubbles and shrinkage cavities in the cast product.
[0059] As Figure 2As shown, in one embodiment, the length of the exhaust channel 260 is L3, where 80 mm ≤ L3 ≤ 150 mm. For example, the length L3 of the exhaust channel 260 is 80 mm. In another embodiment, the length L3 of the exhaust channel 260 is 90 mm. In another embodiment, the length L3 of the exhaust channel 260 is 100 mm. In another embodiment, the length L3 of the exhaust channel 260 is 110 mm. In another embodiment, the length L3 of the exhaust channel 260 is 120 mm. In another embodiment, the length L3 of the exhaust channel 260 is 140 mm. In another embodiment, the length L3 of the exhaust channel 260 is 150 mm.
[0060] The depth of the exhaust channel 260 is K, where 0.05 mm ≤ K ≤ 0.15 mm. For example, the exhaust channel is provided on the static mold, and the depth of the exhaust channel is the recessed distance of the exhaust channel on the static mold.
[0061] For example, the depth K of the exhaust channel 260 is 0.05 mm. In another embodiment, the depth K of the exhaust channel 260 is 0.08 mm. In another embodiment, the depth K of the exhaust channel 260 is 0.1 mm. In another embodiment, the depth K of the exhaust channel 260 is 0.12 mm. In another embodiment, the depth K of the exhaust channel 260 is 0.15 mm.
[0062] Reasonable setting of the exhaust channel 260 size can reduce melt residue and greatly reduce the post-processing pressure of the residual material.
[0063] The temperature of the mold body is T, where 110°C≤T≤160°C. The exhaust channel 260 is a part of the mold body, and the temperature of the exhaust channel is also T, where 110°C≤T≤160°C.
[0064] Illustratively, the temperature of the mold body is T = 110°C. In another embodiment, the temperature of the mold body is T = 120°C. In another embodiment, the temperature of the mold body is T = 130°C. In another embodiment, the temperature of the mold body is T = 140°C. In another embodiment, the temperature of the mold body is T = 150°C. In another embodiment, the temperature of the mold body is T = 160°C. The melt gradually solidifies during the flow in the exhaust channel. Setting the temperature T of the mold body of different sizes can control the flow distance of the melt in the exhaust channel 260. The higher the temperature, the greater the distance the melt flows in the exhaust channel, and the lower the temperature, the smaller the distance the melt flows in the exhaust channel.
[0065] like Figure 1 and Figure 2As shown, in one embodiment, the pressure relief groove 220 further includes an overflow groove 240. The overflow groove 240 is disposed between the cavity 200 and the first overflow passage 250. The overflow groove 240 is connected to the cavity 200 and the first overflow passage 250. The melt accumulates a certain volume in the overflow groove 240 before entering the first overflow passage 250, enabling the melt to fill the cavity 200 more evenly and reducing quality problems caused by uneven filling.
[0066] Exemplarily, as Figure 2 shown, the volume of the overflow groove 240 is greater than the volume of the first overflow passage 250.
[0067] The overflow groove 240 can effectively collect and discharge the excess melt and gas generated during the casting process, preventing these substances from remaining in the cavity 200, thereby reducing the generation of defects such as pores, shrinkage cavities, shrinkage porosity, and cold shuts, and improving the internal quality and appearance quality of the product.
[0068] As Figure 1 and Figure 2 shown, in one embodiment, the pressure relief groove 220 further includes a curved overflow passage 230. The curved overflow passage 230 is disposed between the cavity 200 and the overflow groove 240.
[0069] Exemplarily, the curved overflow passage 230 has multiple bends. The curved overflow passage 230 reduces the flow rate of the melt through the inner wall at the bends without hindering the discharge of gas. The provided curved overflow passage 230 can maintain the pressure of the melt in the cavity 200, enabling the melt to fully fill the cavity 200.
[0070] In all the examples shown and described here, any specific values should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values.
[0071] It should be noted that: like reference numerals and letters denote like items in the following figures. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0072] The above-described embodiments merely represent several implementation manners of the utility model. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model. It should be noted that for those of ordinary skill in the art, without departing from the concept of the utility model, several modifications and improvements can still be made, and these all fall within the protection scope of the utility model.
Claims
1. A casting mold, characterized in that, Comprising: A mold body (100), a cavity (200) is arranged inside the mold body (100), the cavity (200) has a feed inlet (210) and a pressure relief groove (220), the pressure relief groove (220) includes a first overflow channel (250), an exhaust channel (260) and a second overflow channel (270), the first overflow channel (250) connects the cavity (200) and the exhaust channel (260), the exhaust channel (260) connects the second overflow channel (270), the first overflow channel (250), the exhaust channel (260) and the second overflow channel (270) are arranged in sequence along the melt flow direction, the cross-sectional areas of the first overflow channel (250) and the second overflow channel (270) along a first plane are smaller than the cross-sectional area of the exhaust channel (260) along the first plane, and the first plane is perpendicular to the length direction of the first overflow channel (250).
2. The casting mold according to claim 1, characterized in that, The first overflow channel (250) and the second overflow channel (270) are cylindrical channels.
3. The pouring mold according to claim 2, characterized in that, The inner diameter of the first overflow channel (250) is D1, where 2.5 mm ≤ D1 ≤ 6.5 mm.
4. The casting mold according to claim 3, characterized in that, The length of the first overflow channel (250) is L1, where 25 mm ≤ L1 ≤ 160 mm.
5. The casting mold according to claim 2, characterized in that, The inner diameter of the second overflow channel (270) is D2, where 2.5 mm ≤ D2 ≤ 6.5 mm.
6. The pouring mold according to claim 5, wherein The length of the second overflow channel (270) is L2, where 25 mm ≤ L2 ≤ 160 mm.
7. The casting mold according to claim 1, wherein, The exhaust channel (260) is a cuboid chamber.
8. The pouring mold according to claim 7, wherein The length of the exhaust channel (260) is L3, where 80 mm ≤ L3 ≤ 150 mm; The depth of the exhaust channel (260) is K, where 0.05 mm ≤ K ≤ 0.15 mm; The temperature of the mold body is T, where 110 °C ≤ T ≤ 160 °C.
9. The casting mold according to any one of claims 1 to 8, characterized in that, The pressure relief groove (220) further includes: An overflow groove (240), the overflow groove is arranged between the cavity and the first overflow channel (250), and the overflow groove is connected to the cavity and the first overflow channel.
10. The pouring mold according to claim 9, characterized in that, The pressure relief groove (220) further includes: A curved overflow channel (230), the curved overflow channel (230) is arranged between the cavity (200) and the overflow groove (240).