Nozzle and casting device

Abstract

The invention provides a casting nozzle and a casting device, and belongs to the technical field of casting and batteries. The casting nozzle comprises a casting nozzle body and a flow choking block, and the casting nozzle body is provided with a casting nozzle cavity, a feeding port and a discharging port, the flow choking block is located in the casting nozzle cavity and is configured to be used for blocking the flowing speed of a material body flowing through the flow choking block in the casting nozzle cavity. The choked flow block can be arranged on the side of the casting nozzle cavity, so that the edge thickness of the formed metal plate is reduced, and in the subsequent cold rolling process of the metal plate, the pressure borne by the edge of the metal plate can be reduced, cracks are reduced, and the quality of the metal foil is improved. And the edge of the metal plate does not need to be cut off, waste of metal materials is reduced, cost is saved, the cutting procedure is not needed, and the production efficiency is higher.

Description

Technical Field

[0001] The present application relates to the fields of casting and battery technology, and in particular to a casting nozzle and a casting device. Background Art

[0002] Energy conservation and emission reduction are key to the sustainable development of the automotive industry. Electric vehicles, due to their energy-saving and environmentally friendly advantages, have become an important component of the sustainable development of the automotive industry. For electric vehicles, battery technology is a key factor in their development.

[0003] The metal foil used in batteries, such as aluminum or copper foil, is typically produced through a casting and cold rolling process. The casting process includes a nozzle and a casting and rolling mill. The metal material enters the nozzle and is discharged from the nozzle's outlet. The discharged metal material is then cast and rolled by the casting and rolling mill to form a metal plate, which is then rolled into a metal foil by a cold rolling process. However, the thickness of the metal plates formed by the casting process in related art is uniform, and during the subsequent cold rolling process, the edges of the metal plates are prone to over-stressing and fracturing, which affects the quality of the metal foil. Summary of the Invention

[0004] The present application aims to solve at least one of the technical problems in the background art. To this end, one object of the present application is to provide a casting nozzle and a casting device to improve the quality of metal foil.

[0005] An embodiment of the first aspect of the present application provides a casting nozzle, which includes: a casting nozzle body, having a casting nozzle cavity, and a feed port and a discharge port connected to the casting nozzle cavity; a flow block, located in the casting nozzle cavity and fixedly connected to the casting nozzle body, and the flow block is configured to block the flow rate of the material in the casting nozzle cavity flowing through the flow block.

[0006] In the technical solution of the embodiment of the present application, the baffle block 20 can be placed according to the position where the thickness of the metal plate needs to be reduced, so that the position where the thickness of the metal plate is reduced corresponds to the position of the baffle block in the casting nozzle cavity, so that the thickness of the metal plate formed by the casting nozzle provided by the embodiment of the present application is different. For example, the baffle block can be set on the side of the casting nozzle cavity, so that the edge thickness of the formed metal plate is reduced. In the subsequent cold rolling process of the metal plate, the pressure on the edge of the metal plate can be reduced, the generation of cracks can be reduced, and the quality of the metal foil can be improved. In addition, there is no need to cut the edge of the metal plate, which reduces the waste of the metal material, saves costs, does not require a cutting process, and has higher production efficiency.

[0007] In some embodiments, the discharge port extends along a first direction X, and the baffle is located at at least one end of the nozzle cavity along the first direction X. Positioning the baffle at the end of the nozzle cavity along the first direction X reduces the thickness of the metal sheet formed by the nozzle at its edges along the width direction. During the subsequent cold rolling process of the metal sheet, the pressure on the edges along the width direction is reduced, thereby reducing cracks in the metal sheet and improving the quality of the subsequently formed metal foil.

[0008] In some embodiments, the baffle has a first end and a second end that are opposite each other along a first direction X. The thickness D1 of the first end along a second direction Y is greater than the thickness D2 of the second end along the second direction Y. The first end is located near the end of the nozzle cavity, and the second end is located near the middle of the nozzle cavity. The second direction Y is the height direction of the nozzle cavity. The thickness of the baffle at the end of the nozzle cavity near the nozzle cavity is greater than the thickness of the baffle at the middle of the nozzle cavity. This allows the baffle to block more material near the end of the nozzle cavity, and the material flow rate in the area near the end of the nozzle cavity is lower. For the formed metal sheet, the thickness is smaller near the edge of the metal sheet along the width direction, and the thickness is smaller near the middle of the metal sheet along the width direction. This thickness setting better matches the deflection deformation law of the cold rolling roller, is better for reducing cracks in the metal sheet, and improves the quality of the subsequently formed metal foil.

[0009] In some embodiments, the baffle has a first point and a second point spaced apart; when the distance between the first point and the end of the nozzle cavity along the first direction X is less than the distance between the second point and the end of the nozzle cavity along the first direction X, the thickness of the baffle at the first point is greater than or equal to the thickness of the baffle at the second point; when the distance between the first point and the end of the nozzle cavity along the first direction X is greater than or equal to the distance between the second point and the end of the nozzle cavity along the first direction X, the thickness of the baffle at the first point is less than or equal to the thickness of the baffle at the second point. In terms of the overall direction of the baffle, the closer the baffle is to the end of the nozzle cavity, the greater the thickness of the baffle, so that the baffle blocks more metal material, and the thickness of the subsequently formed metal plate becomes thinner the closer to the edge, so that the variation pattern of the thickness of the metal plate is more consistent with the deflection deformation pattern of the cold rolling roller, which is better for reducing the occurrence of cracks in the metal plate.

[0010] In some embodiments, the cross-section of the baffle includes at least one of a stepped shape, a trapezoidal shape, and a triangular shape, and the cross-section is parallel to the first direction X and the second direction Y. The shapes of the baffle vary, and stepped, trapezoidal, and triangular shapes are relatively common. Furthermore, the closer the baffle is to the end of the nozzle cavity, the thicker the baffle is, and the simpler the manufacture of the baffle is.

[0011] In some embodiments, the nozzle body includes: a first nozzle plate; a second nozzle plate stacked with the first nozzle plate; and a side ear located between the first and second nozzle plates; wherein the side ear surrounds the side of the first nozzle plate so that the first and second nozzle plates and the side ear form a nozzle cavity, and the side ear has two spaced-apart notches to form a feed port and a discharge port between the first and second nozzle plates. The nozzle cavity is formed by the first and second nozzle plates and the side ear, and the shape of the nozzle cavity can be adjusted by adjusting the shape of the first and second nozzle plates or the side ear. At the same time, the position and shape of the feed port and the discharge port can be changed by setting the position of the notch in the side ear, and the structure of the nozzle can be set according to actual needs.

[0012] In some embodiments, along the second direction Y, the maximum thickness D3 of the baffle is equal to the thickness D4 of the side ears. The second direction Y is the height direction of the nozzle cavity. The height of the nozzle cavity is equal to the thickness D4 of the side ears, so that the baffle can be placed in the nozzle cavity.

[0013] In some embodiments, the nozzle further comprises a diverter block located within the nozzle cavity. The diverter block and the flow block are spaced apart along a first direction X, which is the direction in which the discharge port extends. The diverter block is disposed within the nozzle cavity 11. When fluid flows through the diverter block, the material diffuses along the sides of the diverter block, resulting in a more even distribution of the material.

[0014] In some embodiments, the nozzle includes two flow blocks and multiple flow diverter blocks, with the multiple flow diverter blocks positioned between the two flow blocks along a first direction X and spaced apart. The multiple flow diverter blocks provide for improved material diversion and more uniform distribution within the nozzle. The multiple flow diverter blocks positioned between the two flow blocks along the first direction X result in a subsequently formed metal plate having a thinner thickness on both sides along the first direction X, making cracks less likely to form on both sides of the metal plate.

[0015] In some embodiments, the diverter block has a third end and a fourth end that are opposite to each other along a third direction Z, the third end being close to the discharge port, and the fourth end being close to the feed port. The distance L1 between the third ends of any two adjacent diverter blocks is greater than the distance L2 between the fourth ends, and the third direction Z is the arrangement direction of the feed port and the discharge port. The distance between the ends of the two adjacent diverter blocks close to the discharge port is greater than the distance between the ends of the diverter blocks close to the feed port. In this way, after the material is diverted at the fourth end of the diverter block, the material moves toward the middle of the diverter block under the guidance of the diverter block, making the material distribution more uniform and improving the thickness consistency of the middle portion of the subsequently formed metal plate.

[0016] In some embodiments, along the second direction Y, the maximum thickness D3 of the flow block is equal to the maximum thickness D5 of the flow diverter. The second direction Y is the height of the nozzle cavity. The height of the nozzle cavity is equal to the thickness D4 of the side ears. The maximum thickness D5 of the flow diverter is equal to the thickness D4 of the side ears, so that the flow diverter can be placed in the nozzle cavity.

[0017] In some embodiments, the length L3 of the baffle along a first direction X is greater than or equal to 20 mm and less than or equal to 40 mm, where the first direction X is the direction in which the discharge port extends. The length L3 of the baffle along the first direction X is proportional to the width of the reduced thickness region of the metal sheet subsequently formed. If the length L3 of the baffle is small, for example, less than 20 mm, the width of the reduced thickness region of the metal sheet subsequently formed is small, and the metal sheet may still be crushed during cold rolling, affecting the quality of the metal foil. If the length L3 of the baffle is large, for example, greater than 40 mm, the width of the reduced thickness region of the metal sheet subsequently formed is large, affecting the thickness consistency of the central region of the metal sheet and also affecting the quality of the metal foil. In an embodiment of the present application, the length L3 of the baffle along the first direction X is set to be greater than or equal to 20 mm and less than or equal to 40 mm, so that the width of the reduced thickness region of the metal sheet subsequently formed is neither too large nor too small, thereby improving the quality of the metal foil.

[0018] An embodiment of the second aspect of the present application provides a casting device, which includes the casting nozzle in the above embodiment.

[0019] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the multiple drawings represent the same or similar components or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings only depict some embodiments disclosed in this application and should not be construed as limiting the scope of this application.

[0021] Figure 1 This is a schematic structural diagram of a casting nozzle according to some embodiments of the present application;

[0022] Figure 2 Schematic diagram of the exploded structure of the nozzle of some embodiments of the present application;

[0023] Figure 3 Schematic diagram of the internal structure of the nozzle of some embodiments of the present application;

[0024] Figure 4 This is a schematic structural diagram of a flow blocking block in some embodiments of the present application;

[0025] Figure 5 For this application Figure 4 Main view of the middle baffle;

[0026] Figure 6 Schematic diagram of the structure of the flow blocking block in other embodiments of the present application;

[0027] Figure 7 For this application Figure 6 Main view of the middle baffle;

[0028] Figure 8 Schematic diagram of the structure of the flow blocking block in other embodiments of the present application;

[0029] Figure 9 For this application Figure 8 Main view of the middle baffle;

[0030] Figure 10 Schematic diagram of the internal structure of the nozzle of other embodiments of the present application;

[0031] Figure 11 Schematic diagram of the internal structure of the nozzle of other embodiments of the present application;

[0032] Figure 12 For this application Figure 3 Schematic diagram of the decomposition.

[0033] Description of reference numerals:

[0034] 100. Nozzle; 10. Nozzle body; 11. Nozzle cavity; 12. Feed port; 13. Discharge port; 14. First nozzle plate; 15. Second nozzle plate; 16. Side ear; 161. First portion; 162. Second portion; 163. Third portion; 20. Baffle; 21. First end; 22. Second end; 30. Diverter; 31. Third end; 32. Fourth end. DETAILED DESCRIPTION

[0035] The following embodiments of the technical solution of the present application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application and are therefore only examples and are not intended to limit the scope of protection of the present application.

[0036] 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 herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0037] In the description of the embodiments of this application, the technical terms "first" and "second" are used only to distinguish different objects and should not be understood to indicate or imply relative importance or implicitly specify the quantity, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0038] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0039] In the description of the embodiments of this application, the term "and / or" is simply a description of the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent the following three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0040] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0041] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0042] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; internal connections between two components or interactions between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present application based on specific circumstances.

[0043] Currently, market developments indicate that power batteries are becoming increasingly widely used. They are not only used in energy storage systems such as hydropower, thermal, wind, and solar power plants, but are also widely used in electric vehicles like electric bicycles, electric motorcycles, and electric vehicles, as well as in military equipment and aerospace. As power battery applications continue to expand, market demand is also growing.

[0044] The pole pieces in the battery include metal foils, such as aluminum foil or copper foil. Metal foils are mainly used as current collectors in batteries and have an important impact on battery performance. Metal foils are generally produced by casting devices and cold rolling devices. The casting device includes a casting nozzle and a casting and rolling machine. The casting nozzle is used to transport and distribute the metal material. After the metal material enters the casting nozzle, it is evenly distributed by the casting nozzle and discharged from the discharge port of the casting nozzle. The discharged metal material is slowly formed and cast and rolled by the casting and rolling machine to form a metal plate. The metal plate is then transported to the cold rolling device and is cold-rolled into a metal foil. The cold rolling roller is relatively large in size. Under the action of gravity, the cold rolling roller has a certain degree of deflection, which makes the edge gap of the cold rolling roller small and the middle gap large.

[0045] In the prior art, the metal sheets formed by the casting apparatus have a uniform thickness. However, during the subsequent cold rolling process, the edges of the metal sheets are subjected to excessive pressure, which can easily crack and affect the quality of the metal foil. To reduce the occurrence of cracks and improve the quality of the metal foil, the edges of the metal sheets need to be cut off before cold rolling. However, this results in waste of metal material, increases production costs, and increases the number of steps, resulting in lower production efficiency.

[0046] The embodiment of the present application provides a casting nozzle, which includes a casting nozzle body and a baffle block. The casting nozzle body has a casting nozzle cavity, and a feed port and a discharge port connected to the casting nozzle cavity. The baffle block is located in the casting nozzle cavity, and the baffle block is configured to block the flow rate of the material in the casting nozzle cavity flowing through the baffle block. The baffle block can be placed according to the position where the thickness of the metal plate needs to be reduced, so that the position of the metal plate thickness reduction corresponds to the position of the baffle block in the casting nozzle cavity, so that the thickness of the metal plate formed by the casting nozzle provided by the embodiment of the present application is different. For example, the baffle block can be set on the side of the casting nozzle cavity, so that the edge thickness of the formed metal plate is reduced. In the subsequent cold rolling process of the metal plate, the pressure on the edge of the metal plate can be reduced, the generation of cracks can be reduced, and the quality of the metal foil can be improved. In addition, there is no need to cut the edge of the metal plate, which reduces the waste of the metal material body, saves costs, does not require a cutting process, and has higher production efficiency.

[0047] The casting nozzle disclosed in the embodiment of the present application can be used in a casting device to generate metal foil, which is beneficial to improving the quality of the metal foil, avoiding waste of metal materials, reducing production costs, and reducing the number of processes to improve production efficiency.

[0048] The embodiment of the present application provides a casting nozzle, Figure 1 This is a schematic diagram of the structure of the nozzle of some embodiments of the present application. Figure 1 The nozzle 100 includes a nozzle body 10. Figure 2 Schematic diagram of the exploded structure of the nozzle according to some embodiments of the present application.

[0049] Figure 3 Schematic diagram of the internal structure of the nozzle in some embodiments of the present application. Figure 2 and Figure 3 The nozzle body 10 has a nozzle cavity 11, and a feed port 12 and a discharge port 13 in communication with the nozzle cavity 11. The nozzle body 10 also includes a baffle 20, which is located in the nozzle cavity 11 and fixedly connected to the nozzle body 10. The baffle 20 is configured to block the flow rate of the material in the nozzle cavity 11 flowing through the baffle 20.

[0050] The casting apparatus is used to cast and roll metal material, refined in a static furnace, into cast and rolled sheet. The nozzle is a component within the casting apparatus that evenly distributes the metal material. The nozzle is typically made of rigid, high-temperature-resistant ceramic fiber material, which has low thermal conductivity and excellent high-temperature stability. This minimizes impact on the metal material and improves the quality of the metal foil. The material in the nozzle cavity 11 can include metal material.

[0051] In the embodiment of the present application, the feed port 12 and the discharge port 13 are both connected to the nozzle cavity 11 , so that the material body can enter the nozzle cavity 11 from the feed port 12 and be discharged from the discharge port 13 .

[0052] In the embodiment of the present application, the discharge port 13 is opposite to the casting and rolling mill, so that the metal material discharged from the discharge port 13 can directly enter the casting and rolling mill and be cast and rolled into metal plates by the casting and rolling mill.

[0053] For example, the shape of the discharge port 13 can be set to be an elongated strip, so that the metal material discharged from the discharge port 13 can be more easily formed into a metal plate.

[0054] In an embodiment of the present application, the nozzle cavity 11 can be set to a flat structure, that is, the height of the nozzle cavity 11 is relatively small, and the length and width of the nozzle cavity 11 are relatively large, so that the shape of the nozzle cavity 11 is more matched with the shape of the discharge port 13, and the material body located in the nozzle cavity 11 has formed a plate-like structure, which is easier to be discharged from the discharge port 13.

[0055] In an embodiment of the present application, the material body enters the nozzle cavity 11 through the feed port 12. The shape of the feed port 12 can be set to a shape with a small difference in length and width, such as a circle or a square, so that the material body can be more easily fed into the feed port 12.

[0056] In the embodiment of the present application, the baffle block 20 is located in the nozzle cavity 11 and is connected to the nozzle body 10 to prevent the baffle block 20 from being washed away by the material body, resulting in the formed metal plate being of unqualified quality.

[0057] The metal material has a certain fluidity. When the metal material flows through the baffle block 20, the baffle block 20 will block the flow of the metal material, so that the flow rate of the metal material flowing through the baffle block 20 is reduced, and the fluidity of the metal material is not high, so that the metal material at the subsequent position opposite to the baffle block 20 is reduced, so that the thickness of the metal plate at the position corresponding to the baffle block 20 in the subsequently formed metal plate will be reduced.

[0058] When using the casting nozzle provided in the embodiment of the present application for casting, the baffle block 20 can be placed according to the position where the thickness of the metal plate needs to be reduced, so that the position where the thickness of the metal plate is reduced corresponds to the position of the baffle block 20 in the casting nozzle cavity 11, so that the thickness of the metal plate formed by the casting nozzle provided in the embodiment of the present application is different. For example, the baffle block 20 can be set on the side of the casting nozzle cavity 11, so that the edge thickness of the formed metal plate is reduced. In the subsequent cold rolling process of the metal plate, the pressure on the edge of the metal plate can be reduced, the generation of cracks can be reduced, and the quality of the metal foil can be improved. In addition, there is no need to cut the edge of the metal plate, which reduces the waste of the metal material and saves costs. There is no need to perform a cutting process, and the production efficiency is higher.

[0059] According to some embodiments of the present application, see Figure 2 and Figure 3The discharge port 13 extends along the first direction X, and the baffle 20 is located at at least one end of the nozzle cavity 11 along the first direction X.

[0060] In actual production applications, the casting device operates continuously. The metal material discharged from the casting nozzle is subsequently cast and rolled in the casting and rolling mill to form a continuous metal sheet, that is, a metal strip, whose width direction is the same as the extension direction of the discharge port 13. In the embodiment of the present application, the discharge port 13 extends along the first direction X, so that the metal material discharged from the discharge port 13 forms a metal strip with a width direction parallel to the first direction X. During the subsequent cold rolling process of the metal strip, cracks are more likely to appear along the width edge of the metal strip.

[0061] For example, the baffle block 20 may be located at one end of the nozzle cavity 11 along the first direction X; or the baffle block 20 may be located at two opposite ends of the nozzle cavity 11 along the first direction X.

[0062] In the embodiment of the application, the length L1 of the discharge port 13 along the first direction X is greater than the length L2 of the feed port 12 along the first direction X. This makes it easier for the metal material to be concentrated and enter the nozzle cavity 11 from the feed port 12. When the metal material is discharged from the discharge port 13, the size along the first direction X is larger, making it easier to form a metal plate.

[0063] In an embodiment of the present application, the baffle 20 is arranged at the end of the nozzle cavity 11 along the first direction X, so that the thickness of the metal plate formed by the nozzle 100 at its edge along the width direction will be reduced. In the subsequent cold rolling process of the metal plate, the pressure on its edge along the width direction will be reduced, thereby reducing the occurrence of cracks in the metal plate and improving the quality of the subsequently formed metal foil.

[0064] According to some embodiments of the present application, Figure 4 This is a schematic structural diagram of the flow blocking block in some embodiments of the present application. Figure 5 For this application Figure 4 The main view of the middle choke block. Figures 2 to 5 The baffle 20 has a first end 21 and a second end 22 opposite to each other along the first direction X, a thickness D1 of the first end 21 along the second direction Y is greater than a thickness D2 of the second end 22 along the second direction Y, and the first end 21 is close to the end of the nozzle cavity 11, and the second end 22 is close to the middle of the nozzle cavity 11, and the second direction Y is the height direction of the nozzle cavity 11.

[0065] In the embodiment of the present application, the end of the nozzle cavity 11 can be understood as the end extension line of the most edge point of the nozzle cavity 11 along the first direction X, and the end extension line is perpendicular to the first direction X. Figure 3The nozzle cavity 11 has two end extension lines arranged along the first direction X, namely a first end extension line S1 and a second end extension line S2. The middle of the nozzle cavity 11 can be understood as a middle extension line S3 located at the center axis of the first end extension line S1 and the second end extension line S2.

[0066] Since the nozzle cavity 11 has two ends, Figure 3 For example, for the baffle 20 on the left, the first end 21 is close to the first end extension line S1, and the second end 22 is close to the middle extension line S3. For the baffle 20 on the right, the first end 21 is close to the second end extension line S2, and the second end 22 is close to the middle extension line S3.

[0067] In the embodiment of the present application, the second direction Y is the height direction of the nozzle cavity 11. When the bottom surface of the nozzle cavity 11 is a plane, the second direction Y is perpendicular to the bottom surface of the nozzle cavity 11, and the second direction Y is perpendicular to the first direction X. Since the first end 21 and the second end 22 are opposite ends of the baffle block 20 along the first direction X, the first direction X is the same as the width direction of the metal plate to be formed later. That is, the thickness of the baffle block 20 near the edge of the metal plate along the width direction is greater, and the thickness of the baffle block 20 near the middle of the metal plate along the width direction is smaller.

[0068] In an embodiment of the present application, the thickness of the baffle 20 near the end of the nozzle cavity 11 is greater than the thickness of the baffle 20 near the middle of the nozzle cavity 11, so that the baffle 20 blocks more of the material near the end of the nozzle cavity 11, and the flow rate of the material in the area near the end of the nozzle cavity 11 is smaller. For the formed metal plate, the thickness is smaller near the edge of the metal plate along the width direction, and the thickness is even smaller near the middle of the metal plate along the width direction. Such a thickness setting is more consistent with the law of deflection deformation of the cold rolling roller, is better for reducing the occurrence of cracks in the metal plate, and improves the quality of the subsequently formed metal foil.

[0069] According to some embodiments of the present application, the baffle 20 has a first point and a second point spaced apart. When the distance between the first point and the end of the nozzle cavity 11 along the first direction X is less than the distance between the second point and the end of the nozzle cavity 11 along the first direction X, the thickness of the baffle 20 at the first point is greater than or equal to the thickness of the baffle 20 at the second point. When the distance between the first point and the end of the nozzle cavity 11 along the first direction X is greater than or equal to the distance between the second point and the end of the nozzle cavity 11 along the first direction X, the thickness of the baffle 20 at the first point is less than or equal to the thickness of the baffle 20 at the second point.

[0070] Combine Figures 3 to 5 , assuming Figure 4 and Figure 5The baffle block 20 shown corresponds to Figure 3 For the baffle 20 on the middle left side, the distance between the first point and the end of the nozzle cavity 11 along the first direction X is equal to the distance between the first point and the extension line S1 of the first end, and the distance between the second point and the end of the nozzle cavity 11 along the first direction X is equal to the distance between the second point and the extension line S1 of the first end.

[0071] Where the first point is A. If the distance between the first point A and the end of the nozzle cavity 11 along the first direction X is less than the distance between the second point B1 and the end of the nozzle cavity 11 along the first direction X, the second point can be B1, in which case DA = DB1; the second point can be B2, in which case DA > DB2. If the distance between the first point and the end of the nozzle cavity 11 along the first direction X is greater than the distance between the second point and the end of the nozzle cavity 11 along the first direction X, the second point can be B3, in which case DA = DB3; the second point can be B4, in which case DA < DB4. If the distance between the first point and the end of the nozzle cavity 11 along the first direction X is equal to the distance between the second point and the end of the nozzle cavity 11 along the first direction X, the thickness of the baffle 20 at the first point is equal to the thickness of the baffle 20 at the second point.

[0072] Figure 4 and Figure 5 Only one possible structure of the baffle block in the embodiment of the present application is shown. In other embodiments, the baffle block 20 may also have other structures.

[0073] Figure 6 Schematic diagram of the structure of the flow blocking block of other embodiments of the present application. Figure 7 For this application Figure 6 Main view of the middle choke block. Figure 8 Schematic diagram of the structure of the flow blocking block of other embodiments of the present application. Figure 9 For this application Figure 8 The main view of the middle choke block. Figures 6 to 8 , the first point is A. If the distance between the first point A and the end of the nozzle cavity 11 along the first direction X is less than the distance between the second point B1 and the end of the nozzle cavity 11 along the first direction X, the second point may be B1, in which case DA>DB2. If the distance between the first point and the end of the nozzle cavity 11 along the first direction X is greater than the distance between the second point and the end of the nozzle cavity 11 along the first direction X, the second point may be B4, in which case DA<DB4.

[0074] In the embodiment of the present application, from the overall direction of the baffle block 20, the closer the baffle block 20 is to the end of the nozzle cavity 11, the thicker the baffle block 20 is, the more metal material is blocked by the baffle block 20, and the thickness of the subsequently formed metal plate is thinner the closer it is to the side, so that the change pattern of the thickness of the metal plate is more consistent with the pattern of the deflection deformation of the cold rolling roller, which is better for reducing the occurrence of cracks in the metal plate.

[0075] According to some embodiments of the present application, the cross-section of the spoiler 20 includes at least one of a stepped shape, a trapezoidal shape, and a triangle. The cross-section is parallel to the first direction X and the second direction Y.

[0076] See also Figure 4 and Figure 5 , the cross-section of the baffle 20 is in the shape of a step; see Figure 6 and Figure 7 , the cross-section of the baffle 20 is in the shape of a trapezoid; see Figure 8 and Figure 9 The cross-section of the baffle block 20 is in the shape of a triangle, and the thickness D2 of the second end 22 of the baffle block 20 is equal to 0.

[0077] In an embodiment of the present application, when the nozzle 100 includes a plurality of baffles 20, the cross-sectional shapes of different baffles 20 may be different or the same. For example, the nozzle 100 may include two baffles 20, both of which have stepped cross-sectional shapes; or both of which have trapezoidal cross-sectional shapes; or both of which have triangular cross-sectional shapes; or one of the baffles 20 has a stepped cross-sectional shape and the other has a trapezoidal cross-sectional shape; or one of the baffles 20 has a stepped cross-sectional shape and the other has a triangular cross-sectional shape; or one of the baffles 20 has a trapezoidal cross-sectional shape and the other has a triangular cross-sectional shape.

[0078] For example, the nozzle 100 may include three baffles 20, and the cross-sectional shapes of the three baffles 20 may be the same; or the cross-sectional shapes of two of the three baffles 20 are the same, and the cross-sectional shape of the other baffle 20 is different from the other two; or the cross-sectional shapes of the three baffles 20 are different.

[0079] In the embodiments of the present application, the shapes of the baffle blocks 20 are different, and stepped, trapezoidal and triangular shapes are all relatively common shapes. Moreover, according to the placement position of the baffle blocks 20, the closer the baffle blocks 20 are to the end of the nozzle cavity 11, the greater the thickness of the baffle blocks 20, and the simpler the manufacture of the baffle blocks 20.

[0080] According to some embodiments of the present application, see Figure 3 The nozzle body 10 includes a first nozzle plate 14, a second nozzle plate 15, and a side ear 16. The second nozzle plate 15 is stacked on the first nozzle plate 14, and the side ear 16 is located between the first nozzle plate 14 and the second nozzle plate 15. The side ear 16 surrounds the side of the first nozzle plate 14 so that the first nozzle plate 14, the second nozzle plate 15, and the side ear 16 form a nozzle cavity 11. The side ear 16 has two spaced-apart notches to form a feed port 12 and a discharge port 13 between the first nozzle plate 14 and the second nozzle plate 15.

[0081] In the embodiment of the present application, the second nozzle plate 15 and the first nozzle plate 14 are stacked along a second direction Y. The second direction Y is the height direction of the nozzle cavity 11, and the second direction Y is perpendicular to the plate surface of the first nozzle plate 14 and the plate surface of the second nozzle plate 15. For example, the second nozzle plate 15 and the first nozzle plate 14 can both be square plates.

[0082] In the embodiment of the present application, the connection between the first nozzle plate 14 and the side ears 16, as well as the connection between the second nozzle plate 15 and the side ears 16, are both sealed to prevent leakage of the material within the nozzle cavity 11. At the same time, notches are provided in the side ears to form the inlet 12 and outlet 13 of the nozzle body 10.

[0083] in Figure 2 and Figure 3 The structure of a side ear 16 in the embodiment of the present application is shown. Figure 2 and Figure 3 The nozzle body 10 has two side ears 16. The side ears 16 include a first portion 161 extending along the first direction X and a second portion 162 extending along the third direction Z. The first portion 161 and the second portion 162 are connected by a third portion 163. The extension direction of the third portion 163 intersects the first direction X, and the extension direction of the third portion 163 intersects the third direction Z. The first portions 161 of the two side ears 16 are both located near the same side of the first nozzle plate 14 along the third direction Z. The second portions 162 of the two side ears 16 are respectively located near opposite sides of the nozzle cavity 11 along the first direction X, so that the two side ears 16 are symmetrically distributed. In this way, along the first direction X, the distance between the second parts 162 of the two side ears 16 is greater than the distance between the first parts 161 of the two side ears 16, and a discharge port 13 is formed between the second parts 162 of the two side ears 16 and the first casting nozzle plate 14 and the second casting nozzle plate 15, and a feed port 12 is formed between the first parts 161 of the two side ears 16 and the first casting nozzle plate 14 and the second casting nozzle plate 15.

[0084] Figure 10Schematic diagram of the internal structure of the nozzle of other embodiments of the present application. Figure 11 Schematic diagram of the internal structure of the nozzle of some other embodiments of the present application. Figure 10 and Figure 11 The nozzle body 10 has two side ears 16. The side ears 16 include a first portion 161 extending along a first direction X and a second portion 162 extending along a third direction Z. The first portion 161 and the second portion 162 are connected, that is, the two side ears 16 are both L-shaped. Of course, in other implementations, the side ears 16 can also have other shapes, which will not be described in detail in the embodiments of this application.

[0085] In an embodiment of the present application, along the first direction X, the first end 21 of the baffle 20 can contact the edge ear 16, so that the thickness of the edge of the formed metal plate along the first direction X can be minimized, which is more consistent with the law of deflection deformation of the cold rolling roller.

[0086] In the embodiment of the present application, the nozzle cavity 11 is formed by the first nozzle plate 14, the second nozzle plate 15, and the side ears 16. Thus, the shape of the nozzle cavity 11 can be adjusted by adjusting the shape of the first nozzle plate 14, the second nozzle plate 15, or the side ears 16. Furthermore, the position and shape of the feed port 12 and the discharge port 13 can be changed by adjusting the position of the notches in the side ears 16. The structure of the nozzle 100 can be configured according to actual needs.

[0087] Figure 12 For this application Figure 3 See the exploded diagram of Figure 12 Along the second direction Y, the maximum thickness D3 of the baffle 20 is equal to the thickness D4 of the edge ear 16 , and the second direction Y is the height direction of the nozzle cavity 11 .

[0088] In some embodiments of the present application, the maximum thickness D3 of the baffle block 20 is equal to the thickness D1 of the first end 21 of the baffle block 20 , that is, D1 = D3 .

[0089] In the embodiment of the present application, the height of the nozzle cavity 11 is equal to the thickness D4 of the edge ear 16 , so that the baffle 20 can be placed in the nozzle cavity 11 .

[0090] The maximum thickness D3 of the baffle 20 is equal to the thickness D4 of the edge ear 16. At the maximum thickness D3 of the baffle 20, the baffle 20 can completely block the flow of the material. At other thicknesses of the baffle 20, the baffle 20 can slow the flow of the material. Due to the fluidity of the material, even if the baffle 20 completely blocks the flow of the material at the maximum thickness D3 of the baffle 20, the material will flow toward the maximum thickness D3 of the baffle 20 due to the fluidity of the material, and the material will not be absent from the discharge port 13 and the maximum thickness D3 of the baffle 20.

[0091] According to some embodiments of the present application, see Figure 2 and Figure 3 The nozzle 100 further includes a diverter block 30 , which is located in the nozzle cavity 11 . The diverter block 30 and the baffle block 20 are arranged at intervals along a first direction X, and the first direction X is an extension direction of the discharge port 13 .

[0092] In the embodiment of the present application, the diverter block 30 can be connected to at least one of the first nozzle plate 14 and the second nozzle plate 15 to prevent the baffle block 20 from being washed away by the material body, resulting in the formed metal plate being of unqualified quality.

[0093] In the embodiment of the present application, a diverter block 30 is provided in the nozzle cavity 11. When the fluid flows through the diverter block 30, the material body will diffuse to the surrounding along the side of the diverter block 30, making the material body distribution more uniform.

[0094] According to some embodiments of the present application, see Figure 3 The nozzle 100 includes two baffle blocks 20 and a plurality of diverter blocks 30 . The plurality of diverter blocks 30 are located between the two baffle blocks 20 along the first direction X, and the plurality of diverter blocks 30 are arranged at intervals.

[0095] In an embodiment of the present application, the minimum distance between any two adjacent diverter blocks 30 may be equal or different, and the minimum distance between a blocking block 20 and an adjacent diverter block 30 and the minimum distance between two adjacent diverter blocks 30 may be equal or different.

[0096] In the embodiment of the present application, multiple diverter blocks 30 are arranged to achieve a better diversion effect and more uniform distribution of the material within the nozzle 100. The multiple diverter blocks 30 are located between the two flow blocking blocks 20 along the first direction X. This reduces the thickness of the subsequently formed metal plate on both sides along the first direction X, making cracks less likely to form on both sides of the metal plate.

[0097] According to some embodiments of the present application, see Figure 3 The diverter block 30 has a third end 31 and a fourth end 32 relative to each other along the third direction Z. The third end 31 is close to the discharge port 13, and the fourth end 32 is close to the feed port 12. The distance L1 between the third ends 31 of any two adjacent diverter blocks 30 is greater than the distance L2 between the fourth ends 32. The third direction Z is the arrangement direction of the feed port 12 and the discharge port 13.

[0098] Figure 3 A manifestation of the diverter block 30 is shown. Figure 3 In the embodiment, the diverter block 30 is a pentagonal block. In other implementations, the diverter block 30 may also be a triangular block, with one corner of the triangular block facing the discharge port 13 and the side opposite to the corner facing the feed port 12.

[0099] The distance L1 between the third ends 31 of any two adjacent diverter blocks 30 is greater than the distance L2 between the fourth ends 32 , that is, the distance between the ends of the two adjacent diverter blocks 30 close to the discharge port 13 is greater than the distance between the ends of the diverter blocks 30 close to the feed port 12 .

[0100] Exemplarily, the first direction X, the second direction Y, and the third direction Z are perpendicular to each other.

[0101] In the example of the present application, the distance between two adjacent diverter blocks 30 at one end close to the discharge port 13 is greater than the distance between the diverter blocks 30 at one end close to the feed port 12. In this way, after the material is diverted at the fourth end 32 of the diverter block 30, the material moves toward the middle of the diverter block 30 under the guidance of the diverter block 30, so that the material distribution is more uniform and the thickness consistency of the middle of the subsequently formed metal plate is better.

[0102] Figure 2 、 Figure 3 and Figure 10 The shape of the diverter block 30 is a possible embodiment of the present application, see Figure 11 The diverter block 30 may also be a rectangular block, which has a simple structure and is easier to manufacture.

[0103] According to some embodiments of the present application, see Figure 12 Along the second direction Y, the maximum thickness D3 of the baffle block 20 is equal to the maximum thickness D5 of the diverter block 30 , and the second direction Y is the height direction of the nozzle cavity 11 .

[0104] Since the maximum thickness D3 of the baffle block 20 is equal to the thickness D4 of the side ear 16 , the maximum thickness D5 of the diverter block 30 is equal to the thickness D4 of the side ear 16 .

[0105] In an embodiment of the present application, the height of the nozzle cavity 11 is equal to the thickness D4 of the side ear 16 , and the maximum thickness D5 of the diverter block 30 is equal to the thickness D4 of the side ear 16 , so that the diverter block 30 can be placed in the nozzle cavity 11 .

[0106] According to some embodiments of the present application, a length L3 of the baffle 20 along a first direction X is greater than or equal to 20 millimeters (mm) and less than or equal to 40 mm. The first direction X is an extension direction of the discharge port 13 .

[0107] Exemplarily, the length L3 of the spoiler 20 along the first direction X may be equal to 30 mm.

[0108] In an embodiment of the present application, the length L3 of the baffle 20 along the first direction X is proportional to the width of the subsequently formed metal sheet's reduced thickness region. If the length L3 of the baffle 20 is small, for example, less than 20 mm, the width of the subsequently formed metal sheet's reduced thickness region is small, and the metal sheet may still be crushed during cold rolling, affecting the quality of the metal foil. If the length L3 of the baffle 20 is large, for example, greater than 40 mm, the width of the subsequently formed metal sheet's reduced thickness region is large, affecting the thickness consistency of the metal sheet's central region and similarly affecting the quality of the metal foil. In an embodiment of the present application, the length L3 of the baffle 20 along the first direction X is set to be greater than or equal to 20 mm and less than or equal to 40 mm, so that the width of the subsequently formed metal sheet's reduced thickness region is neither too large nor too small, thereby improving the quality of the metal foil.

[0109] An embodiment of the present application provides a casting device, which includes the casting nozzle of any one of the above embodiments.

[0110] The casting device includes a casting nozzle and a casting and rolling mill. The casting nozzle is used to transport and distribute metal materials. After the metal materials enter the casting nozzle, they are evenly distributed by the casting nozzle and discharged from the discharge port of the casting nozzle. The discharged metal materials are slowly formed and cast and rolled by the casting and rolling mill to form metal plates.

[0111] The casting apparatus provided in the embodiments of the present application can form metal plates of varying thicknesses. For example, the thickness of the formed metal plates can be reduced at the edges. This reduces the stress on the edges during subsequent cold rolling, reduces cracking, and improves the quality of the metal foil. Furthermore, the metal plate edges do not need to be trimmed, which reduces metal waste, saves costs, and eliminates the need for a trimming process, resulting in higher production efficiency.

[0112] An embodiment of the present application provides a nozzle, comprising a nozzle body 10, a baffle 20, and a diverter 30. The nozzle body 10 has a nozzle cavity 11, and a feed port 12 and a discharge port 13 in communication with the nozzle cavity 11. The baffle 20 and the diverter 30 are located within the nozzle cavity 11 and are fixedly connected to the nozzle body 10. The baffle 20 is configured to block the flow rate of material in the nozzle cavity 11 as it flows through the baffle 20. A plurality of diverter blocks 30 are located between two baffle blocks 20 along a first direction X.

[0113] The discharge port 13 extends along a first direction X, and the baffle 20 is located at opposite ends of the nozzle cavity 11 along the first direction X. The baffle 20 has a first end 21 and a second end 22 that are opposite each other along the first direction X. The thickness D1 of the first end 21 along the second direction Y is greater than the thickness D2 of the second end 22 along the second direction Y. The first end 21 is located near the end of the nozzle cavity 11, and the second end 22 is located near the middle of the nozzle cavity 11. The second direction Y is the height direction of the nozzle cavity 11. The baffle 20 has a first point and a second point spaced apart. When the distance between the first point and the end of the nozzle cavity 11 along the first direction X is less than the distance between the second point and the end of the nozzle cavity 11 along the first direction X, the thickness of the baffle 20 at the first point is greater than or equal to the thickness of the baffle 20 at the second point. When the distance between the first point and the end of the nozzle cavity 11 along the first direction X is greater than or equal to the distance between the second point and the end of the nozzle cavity 11 along the first direction X, the thickness of the baffle block 20 at the first point is less than or equal to the thickness of the baffle block 20 at the second point. The cross-section of the baffle block 20 includes a stepped shape, the cross section is parallel to the first direction X, and the cross section is parallel to the second direction Y.

[0114] The nozzle body 10 includes a first nozzle plate 14, a second nozzle plate 15, and a side ear 16. The second nozzle plate 15 is stacked on the first nozzle plate 14, and the side ear 16 is located between the first and second nozzle plates 14, 15. The side ear 16 surrounds the sides of the first nozzle plate 14, forming a nozzle cavity 11 with the first, second, and side ears 16. The side ear 16 has two spaced-apart notches, forming the feed port 12 and the discharge port 13 between the first and second nozzle plates 14, 15. Along the second direction Y, the maximum thickness D3 of the baffle 20 is equal to the thickness D4 of the side ear 16.

[0115] The diverter block 30 has a third end 31 and a fourth end 32 that oppose each other along a third direction Z. The third end 31 is located near the discharge port 13, and the fourth end 32 is located near the feed port 12. The distance L1 between the third ends 31 of any two adjacent diverter blocks 30 is greater than the distance L2 between the fourth ends 32. The third direction Z is the arrangement direction of the feed port 12 and the discharge port 13. Along the second direction Y, the maximum thickness D3 of the baffle block 20 is equal to the maximum thickness D5 of the baffle block 30. The length L3 of the baffle block 20 along the first direction X is greater than or equal to 20 mm and less than or equal to 40 mm.

[0116] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A casting nozzle, characterized in that: The casting nozzle (100) comprises: The nozzle body (10) has a nozzle cavity (11), and a feed port (12) and a discharge port (13) communicated with the nozzle cavity (11); A baffle (20) is located in the nozzle cavity (11) and is fixedly connected to the nozzle body (10). The baffle (20) is configured to block the flow rate of the material in the nozzle cavity (11) flowing through the baffle (20).

2. The nozzle according to claim 1, characterized in that The discharge port (13) extends along a first direction X, and the baffle (20) is located at at least one end of the nozzle cavity (11) along the first direction X.

3. The nozzle according to claim 2, characterized in that The baffle (20) has a first end (21) and a second end (22) opposite to each other along the first direction X, a thickness D1 of the first end (21) along the second direction Y is greater than a thickness D2 of the second end (22) along the second direction Y, and the first end (21) is close to the end of the nozzle cavity (11), and the second end (22) is close to the middle of the nozzle cavity (11), and the second direction Y is the height direction of the nozzle cavity (11).

4. The nozzle according to claim 3, characterized in that The baffle (20) has a first point and a second point spaced apart; When the distance between the first point and the end of the nozzle cavity (11) along the first direction X is smaller than the distance between the second point and the end of the nozzle cavity (11) along the first direction X, the thickness of the baffle (20) at the first point is greater than or equal to the thickness of the baffle (20) at the second point; When the distance between the first point and the end of the nozzle cavity (11) along the first direction X is greater than or equal to the distance between the second point and the end of the nozzle cavity (11) along the first direction X, the thickness of the baffle (20) at the first point is less than or equal to the thickness of the baffle (20) at the second point.

5. The nozzle according to claim 4, characterized in that The cross-section of the baffle (20) includes at least one of a stepped shape, a trapezoidal shape, and a triangle shape. The cross-section is parallel to the first direction X, and the cross-section is parallel to the second direction Y.

6. The nozzle according to any one of claims 1 to 5, characterized in that The nozzle body (10) comprises: A first nozzle plate (14); a second nozzle plate (15) stacked with the first nozzle plate (14); a side ear (16) located between the first nozzle plate (14) and the second nozzle plate (15); The side ear (16) surrounds the side of the first nozzle plate (14) so ​​that the first nozzle plate (14), the second nozzle plate (15) and the side ear (16) enclose the nozzle cavity (11), and the side ear (16) has two spaced-apart notches to form the feed port (12) and the discharge port (13) between the first nozzle plate (14) and the second nozzle plate (15).

7. The nozzle according to claim 6, characterized in that Along the second direction Y, the maximum thickness D3 of the baffle (20) is equal to the thickness D4 of the edge ear (16), and the second direction Y is the height direction of the nozzle cavity (11).

8. The nozzle according to any one of claims 1 to 5, characterized in that The casting nozzle (100) further comprises: The diverter block (30) is located in the nozzle cavity (11), and the diverter block (30) and the baffle block (20) are arranged at intervals along a first direction X, and the first direction X is the extension direction of the discharge port (13).

9. The nozzle according to claim 8, characterized in that The casting nozzle (100) comprises two baffle blocks (20) and a plurality of diverter blocks (30), wherein the plurality of diverter blocks (30) are located between the two baffle blocks (20) along the first direction X, and the plurality of diverter blocks (30) are arranged at intervals.

10. The nozzle according to claim 9, characterized in that The diverter block (30) has a third end (31) and a fourth end (32) that are opposite to each other along a third direction Z, the third end (31) is close to the discharge port (13), and the fourth end (32) is close to the feed port (12), the distance L1 between the third ends (31) of any two adjacent diverter blocks (30) is greater than the distance L2 between the fourth ends (32), and the third direction Z is the arrangement direction of the feed port (12) and the discharge port (13).

11. The nozzle according to claim 8, characterized in that Along the second direction Y, the maximum thickness D3 of the baffle block (20) is equal to the maximum thickness D5 of the diverter block (30), and the second direction Y is the height direction of the nozzle cavity (11).

12. The nozzle according to any one of claims 1 to 5, characterized in that The length L3 of the baffle (20) along a first direction X is greater than or equal to 20 mm and less than or equal to 40 mm, and the first direction X is the extension direction of the discharge port (13).

13. A casting device, characterized in that: The casting device comprises the casting nozzle according to any one of claims 1 to 12.

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