Sprue bush cooling structure and die-casting die

Abstract

The embodiment of the application provides a sprue bush cooling structure and a die-casting die, and relates to the technical field of die-casting dies. The sprue bush cooling structure comprises: a high-temperature area on a sprue bush body, a cooling channel and at least one cooling groove in the sprue bush body, the cooling groove being in communication with the cooling channel, and at least part of the cooling groove being arranged correspondingly to the high-temperature area, the cooling channel having a cooling water inlet and a cooling water outlet; a cover body is arranged on at least part of the sprue bush body, and part of the cover body is inserted into the cooling groove. The application covers the high-temperature area by the cooling groove, increases the contact area and medium density of the high-temperature area, improves the local cooling strength, part of the cover body is inserted into the cooling groove, the medium flow direction is changed, the laminar flow effect is reduced, the turbulent flow heat exchange is enhanced, and the cooling efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of die casting mold technology, specifically to a sprue sleeve cooling structure and a die casting mold. Background Technology

[0002] The sprue bushing is an accessory in injection molds that connects the injection machine nozzle to the mold runner. It is a key component in die casting molds, and its cooling structure directly affects the die casting cycle, casting quality, and mold life.

[0003] In related technologies, the cooling structure of the sprue bushing is either a split structure or an integrated structure. In a split structure, a cooling water tank is set on the outer wall of the main body of the sprue bushing, and the outer sleeve of the sprue bushing seals the water tank on the outer wall of the main body. In an integrated structure, the cooling pipe is opened inside the sprue bushing body and extends through two straight channels to the middle section of the small diameter section of the sprue bushing cooling medium, which can directly cool the sprue bushing body.

[0004] However, the split-type sprue bushing cooling structure has a cooling water tank located on the outer wall of the main body, resulting in a long cooling path, low cooling efficiency, and the bushing is prone to loosening and leakage due to the impact of the injection punch; while the integrated sprue bushing cooling structure has poor cooling effect, especially for the high-temperature area of ​​the sprue bushing. Utility Model Content

[0005] This utility model provides a sprue bushing cooling structure and a die-casting mold to solve the problems of cooling effect and efficiency. The cooling channel is set in the sprue bushing cooling structure, which cools the sprue bushing body, while the cooling tank increases the cooling range of the high-temperature area. This solves the problems of low cooling efficiency and easy loosening and leakage of the bushing due to the impact of the injection punch in the related technology of split sprue bushing cooling structure; and poor cooling effect of integrated sprue bushing cooling structure in high-temperature area.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] This application provides a sprue bushing cooling structure, comprising: a sprue bushing body having a high-temperature zone, a cooling channel and at least one cooling groove within the sprue bushing body, the cooling groove communicating with the cooling channel, and at least a portion of the cooling groove corresponding to the high-temperature zone, the cooling channel having a cooling inlet and a cooling outlet, the cooling medium entering the cooling channel from the cooling inlet cooling the high-temperature zone via the cooling groove and flowing out from the cooling outlet; and a cover covering at least a portion of the sprue bushing body, with a portion of the cover inserted into the cooling groove to disturb the flow of the cooling medium within the cooling groove.

[0008] In one possible implementation, the sprue bushing cooling structure provided in this application includes a cover plate bottom plate and at least one water-turning plate. The water-turning plate is connected to the cover plate bottom plate, inserted into the cooling tank, and one end of the water-turning plate is spaced from the bottom of the cooling tank. The cover plate bottom plate covers the sprue bushing body.

[0009] In one possible implementation, the sprue jacket cooling structure provided in this application has an arc-shaped recess on the water-turning plate, the arc-shaped recess being located at the end of the water-turning plate facing the cooling tank.

[0010] In one possible implementation, the sprue bushing cooling structure provided in this application includes a cooling channel comprising multiple cooling holes arranged sequentially along the circumference of the sprue bushing body, with adjacent cooling holes connected to each other, and a cooling groove connected to at least one cooling hole.

[0011] In one possible implementation, the sprue sleeve cooling structure provided in this application includes a cooling groove comprising multiple sub-grooves and multiple water-turning plates. The multiple sub-grooves are spaced apart along the circumference of the sprue sleeve body and are interconnected. The water-turning plates are inserted into the sub-grooves in a one-to-one correspondence.

[0012] In one possible implementation, the sprue bushing cooling structure provided in this application has two adjacent cooling holes whose extension directions intersect.

[0013] In one possible implementation, the sprue bushing cooling structure provided in this application further includes at least one sealing element, with one end of at least one cooling hole extending to the outer periphery of the sprue bushing body, and the sealing element being used to seal one end of the cooling hole.

[0014] In one possible implementation, the depth of the cooling groove in the sprue bushing cooling structure provided in this application is greater than or equal to the depth of the cooling channel.

[0015] In one possible implementation, the sprue cooling structure provided in this application has a cover plate bottom plate welded to the sprue body, or it may also include a connector that passes through the cover plate bottom plate and connects to the sprue body, so that the cover plate bottom plate is connected to the sprue body.

[0016] In addition, this application also provides a die casting mold, including the sprue cooling structure of any of the above embodiments.

[0017] This application provides a sprue cooling structure and a die-casting mold. The sprue cooling structure includes: a sprue body with a high-temperature zone, a cooling channel and at least one cooling groove within the sprue body, the cooling groove communicating with the cooling channel, and at least a portion of the cooling groove corresponding to the high-temperature zone; the cooling channel having a cooling inlet and a cooling outlet; cooling medium entering the cooling channel from the cooling inlet, cooling the high-temperature zone via the cooling groove, and flowing out from the cooling outlet; and a cover covering at least a portion of the sprue body, with a portion of the cover inserted into the cooling groove to disturb the flow of the cooling medium within the cooling groove. This application utilizes a cooling channel within the sprue cooling structure to provide large-scale cooling to the sprue body. The cooling groove directly covers the high-temperature zone, increasing the cooling contact area and cooling medium density, thus enhancing the cooling intensity of the localized high-temperature zone. Furthermore, the partial cover inserted into the cooling groove reduces laminar flow and enhances turbulent heat transfer by altering the flow direction of the medium. The cooling medium flows into the cooling channel from the inlet, enters the cooling tank, and is accelerated by the disturbance of part of the cover before finally flowing out from the outlet. The medium is densely distributed within the cooling tank, maximizing the contact area with the high-temperature zone, thus achieving efficient heat exchange. Attached Figure Description

[0018] Figure 1 A schematic diagram of the sprue bushing cooling structure provided in the embodiments of this application. Figure 1 ;

[0019] Figure 2 for Figure 1 Another structural schematic diagram of the cooling structure of the middle gate bushing;

[0020] Figure 3 for Figure 2 BB section sectional view of the cooling structure of the middle gate sleeve;

[0021] Figure 4 This is a schematic diagram of the structure of the sprue sleeve body in the sprue sleeve cooling structure provided in the embodiments of this application;

[0022] Figure 5 This is a schematic diagram of the cover body in the sprue bushing cooling structure provided in the embodiments of this application. Figure 1 ;

[0023] Figure 6 This is a schematic diagram of the cooling channel in the sprue bushing cooling structure provided in the embodiments of this application;

[0024] Figure 7 A schematic diagram of the sprue bushing cooling structure provided in the embodiments of this application. Figure 2 ;

[0025] Figure 8 This is a schematic diagram of the cover body in the sprue bushing cooling structure provided in the embodiments of this application. Figure 2;

[0026] Figure 9 This is a schematic diagram of an integrated gating sleeve structure in related technologies;

[0027] Figure 10 for Figure 9 Another structural diagram of the integrated gating sleeve structure;

[0028] Figure 11 for Figure 10 Sectional view of the integrated gating sleeve structure (AA section).

[0029] The attached diagram shows the following reference numerals: 100 - gate sleeve body; 101 - high temperature zone; 102 - weld groove; 110 - cooling channel; 111 - cooling inlet; 112 - cooling outlet; 113 - cooling hole; 120 - cooling groove; 121 - sub-groove; 200 - cover; 210 - cover plate bottom plate; 220 - water-turning plate; 221 - arc-shaped recess; 300 - sealing element; 400 - connecting element; 401 - mounting hole. Detailed Implementation

[0030] The embodiments of this utility model will be described below with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be understood that the preferred embodiments are only for illustrating this utility model and not for limiting the scope of protection of this utility model.

[0031] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show the components related to the present invention and are not drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0032] In related technologies, the cooling structure of the sprue bushing is either a split structure or an integrated structure. In a split structure, a cooling water tank is located on the outer wall of the sprue bushing body, and the outer sleeve of the sprue bushing seals the water tank on the outer wall of the body. In an integrated structure, the cooling pipes are located inside the sprue bushing body, extending through two straight channels to the cooling medium in the middle section of the small-diameter segment of the sprue bushing, allowing direct cooling of the sprue bushing body. Furthermore, most commonly used die-casting mold sprue bushings currently employ the aforementioned integrated structure, with further optimization of the internal cooling pipe system. Specifically, the cooling water system is designed with two sets of circulating cooling water channels through drilling, arranged in a ring shape inside the sprue bushing. Four orifices are reserved: Inlet 1 (1#), Outlet 1 (1#), Inlet 2 (2#), and Outlet 2 (2#). In addition to these four machined holes, the plug mounting holes 5 at the other machined hole openings are sealed with plugs (e.g., ...). Figure 9 , Figure 10 and Figure 11 (As shown).

[0033] However, the split-type sprue bushing cooling structure has a cooling water tank located on the outer wall of the main body, resulting in a long cooling path, low cooling efficiency, and the bushing is prone to loosening and leakage due to the impact of the injection punch; while the integrated sprue bushing cooling structure has uneven cooling range, especially for the high-temperature area of ​​the sprue bushing.

[0034] Understandably, the integrated structure consists of two cooling circuits, resulting in a large cooling flow rate, but it also requires more plugs, increasing the likelihood of leakage. Furthermore, while this cooling structure provides uniform cooling, the heating of the sprue bushing is actually uneven during die casting. The area above the sprue bushing, in contact with the molten metal, has a significantly higher temperature, while the area below, not in contact with the molten metal, has a relatively lower temperature. The higher-temperature areas require stronger cooling to maintain the mold's thermal balance.

[0035] In view of this, this application provides a sprue cooling structure and a die-casting mold. The sprue cooling structure includes: a sprue body with a high-temperature zone, a cooling channel and at least one cooling groove within the sprue body, the cooling groove communicating with the cooling channel, and at least a portion of the cooling groove corresponding to the high-temperature zone; the cooling channel having a cooling inlet and a cooling outlet; cooling medium entering the cooling channel from the cooling inlet, cooling the high-temperature zone via the cooling groove, and flowing out from the cooling outlet; and a cover covering at least a portion of the sprue body, with a portion of the cover inserted into the cooling groove to disturb the flow of the cooling medium within the cooling groove. This application utilizes a cooling channel within the sprue cooling structure to provide large-scale cooling to the sprue body. The cooling groove directly covers the high-temperature zone, increasing the cooling contact area and cooling medium density, thus enhancing the cooling intensity of the local high-temperature zone. Furthermore, the partial cover inserted into the cooling groove reduces laminar flow and enhances turbulent heat transfer by changing the direction of medium flow. The cooling medium flows into the cooling channel from the inlet, enters the cooling tank, and is accelerated by the disturbance of part of the cover before finally flowing out from the outlet. The medium is densely distributed within the cooling tank, maximizing the contact area with the high-temperature zone, thus achieving efficient heat exchange.

[0036] The present application will now be described with reference to the accompanying drawings and specific embodiments.

[0037] This application provides a gate sleeve cooling structure, including: Figure 1 As shown, the sprue bushing body 100 has a high-temperature zone 101, and the sprue bushing body 100 has a cooling channel 110 and at least one cooling groove 120 inside, such as... Figure 3 As shown, the cooling tank 120 is connected to the cooling channel 110, and at least a portion of the cooling tank 120 is correspondingly arranged with the high-temperature zone 101. The cooling channel 110 has a cooling inlet 111 and a cooling outlet 112. The cooling medium entering the cooling channel 110 from the cooling inlet 111 cools the high-temperature zone 101 through the cooling tank 120 and flows out from the cooling outlet 112. The cover 200 covers at least a portion of the sprue sleeve body 100, and a portion of the cover 200 is inserted into the cooling tank 120 to disturb the flow of the cooling medium in the cooling tank 120.

[0038] The 100mm sprue bushing body has a stepped cylindrical ring structure, such as... Figure 1 , Figure 2 and Figure 4 As shown, the sprue sleeve body 100 has an inlet sleeve and an outlet sleeve. The outer diameter of the inlet sleeve is larger than the outer diameter of the outlet sleeve. The outlet sleeve is the contact area of ​​the molten metal, i.e., the high temperature zone 101.

[0039] Combination Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the gating sleeve body 100 has a cooling channel 110 and at least one cooling tank 120. The cooling tank 120 is arranged opposite to the high temperature zone 101, which increases the effective contact area between the cooling medium and the high temperature zone 101 of the gating sleeve. It can focus on cooling the high temperature zone 101 to enhance the local cooling intensity of the high temperature zone 101, thereby accelerating the cooling rate of the molten metal, reducing the production cycle, and improving the die casting production efficiency.

[0040] The cover 200 covers at least part of the gate sleeve body 100, and part of the cover 200 is inserted into the cooling tank 120 to disturb the flow of the cooling medium in the cooling tank 120.

[0041] Among them, such as Figure 1 As shown, the cover 200 can be connected to the sprue sleeve body 100 at the weld groove 102 by welding and seal the cooling groove 120.

[0042] This application utilizes a cooling channel 110 within the sprue bushing cooling structure to provide extensive cooling for the sprue bushing body 100. The cooling tank 120 directly covers the high-temperature zone 101, increasing the cooling contact area and cooling medium density, thereby enhancing the cooling intensity of the localized high-temperature zone 101. Furthermore, a portion of the cover 200 is inserted within the cooling tank 120, altering the medium flow direction, reducing laminar flow effects, and enhancing turbulent heat transfer. The cooling medium flows into the cooling channel 110 from the inlet, enters the cooling tank 120, and is accelerated by the disturbance caused by the partial cover 200 before finally flowing out from the outlet. The medium distribution within the cooling tank 120 is dense, maximizing the contact area with the high-temperature zone 101, thus achieving highly efficient heat exchange.

[0043] In one possible implementation, the sprue jacket cooling structure provided in this application includes a cover 200 comprising a cover plate bottom plate 210 and at least one water-turning plate 220, such as... Figure 5 and Figure 8 As shown, the water-discharging plate 220 is connected to the cover plate bottom plate 210, and the water-discharging plate 220 is inserted into the cooling tank 120, as shown. Figure 3 and Figure 6 As shown, one end of the water-turning plate 220 is spaced from the bottom of the cooling tank 120, and the cover plate bottom plate 210 is placed on the sprue sleeve body 100.

[0044] like Figure 5 and Figure 8As shown, the end of the cover plate 210 facing away from the cooling tank 120 is flush with the end face to facilitate machining. After the sprue bushing body 100 and the cover body 200 are assembled, each water-turning vane 220 is located in a single cooling tank 120 of the sprue bushing body 100, and a certain gap is reserved at the bottom of each water-turning vane 220 cooling tank 120 to facilitate the flow of cooling water. The space formed in this way constitutes a cooling passage.

[0045] Of course, multiple water-turning vanes 220 can be installed in a single cooling tank 120, and the multiple water-turning vanes 220 are spaced apart along the flow direction of the cooling medium in the cooling tank 120.

[0046] A gap is formed between the bottom of the water-turning plate 220 and the bottom wall of the cooling tank 120 to allow the cooling medium to flow.

[0047] In one possible implementation, the sprue jacket cooling structure provided in this application has an arc-shaped recess 221 on the water-turning vane 220, the arc-shaped recess 221 being located at the end of the water-turning vane 220 facing the cooling tank 120, such as... Figure 5 As shown, the arc-shaped concave surface of the arc-shaped recess 221 disturbs the cooling medium in the cooling tank, changes its flow direction and enhances the degree of turbulence, thereby improving the heat exchange efficiency between the cooling medium and the high-temperature zone.

[0048] It should be noted that the curvature of its arc-shaped concave portion 221 must match the bottom shape of the cooling tank 120 in order to improve the disturbance effect without hindering the flow of the medium.

[0049] In one possible implementation, the sprue bushing cooling structure provided in this application includes a cooling channel 110 comprising a plurality of cooling holes 113, which are arranged sequentially along the circumference of the sprue bushing body 100, and adjacent cooling holes 113 are connected to each other, and the cooling groove 120 is connected to at least one cooling hole 113.

[0050] For example, the cooling groove 120 is located in the middle of a cooling hole 113. Alternatively, the two ends of the cooling groove 120 connect to two cooling holes 113 extending in different directions, such as... Figure 3 As shown, the cooling tank 120 includes a plurality of sub-grooves 121, which are arranged sequentially along the circumference of the sprue sleeve body 100, and adjacent sub-grooves 121 are connected. The first sub-grooves 121 is connected to one cooling hole 113, and the last sub-grooves 121 is connected to another cooling hole 113.

[0051] In one possible implementation, the sprue sleeve cooling structure provided in this application includes a cooling groove 120 comprising a plurality of sub-grooves 121 and a plurality of water-turning plates 220. The plurality of sub-grooves 121 are arranged sequentially along the circumference of the sprue sleeve body 100 and are interconnected with each other. The water-turning plates 220 are inserted into the sub-grooves 121 in a one-to-one correspondence. A plurality of cooling holes 113 are arranged along the circumference and are interconnected to form a surrounding cooling passage 110, which facilitates covering the area of ​​the sprue sleeve body 100.

[0052] The gating bushing body 100 has a set of cooling holes 113 drilled on each side of its interior, which are distributed around the circumference and interconnected with each other. The gating bushing body 100 between the two sets of cooling holes 113 has a plurality of sub-grooves 121, which are connected to the cooling holes 113.

[0053] One sub-groove 121 may correspond to one water-tumbling plate 220, or one sub-groove 121 may correspond to multiple water-tumbling plates 220. This application does not limit this.

[0054] It also includes at least one partition, which is disposed within the cooling tank 120 to divide the cooling tank 120 into multiple sub-grooves 121. For example, one partition can form two sub-grooves 121, and five partitions can form six sub-grooves 121. Of course, the partition can be integrally formed with the sprue sleeve body 100 to form multiple sub-grooves 121.

[0055] The sub-grooves 121 are spaced apart from the inner wall of the cover plate 210 so that multiple sub-grooves 121 can be connected to facilitate the flow of cooling medium.

[0056] In one possible implementation, the sprue bushing cooling structure provided in this application has two adjacent cooling holes 113 whose extension directions intersect. Since the two adjacent cooling holes 113 have different extension directions, the coverage of the cooling holes 113 is expanded, achieving large-scale cooling. This works in conjunction with the local enhancement of the cooling tank 120 to enhance the cooling effect, thereby increasing the cooling efficiency of the sprue bushing.

[0057] It is understandable that the different extension directions of two adjacent cooling holes 113 can make the distribution range of cooling holes 113 within the sprue bushing body 100 wider, covering more areas (such as different circumferential positions), avoiding the local coverage blind spots caused by the concentration of cooling holes 113 in a single direction, thereby achieving large-scale cooling of the sprue bushing body 100.

[0058] In one possible implementation, the sprue bushing cooling structure provided in this application further includes at least one sealing element 300, with one end of at least one cooling hole 113 extending to the outer periphery of the sprue bushing body 100, and the sealing element 300 is used to seal one end of the cooling hole 113.

[0059] For example, there are 6 cooling holes 113, arranged in groups of 3, symmetrically along the axis of the gate sleeve body 100. Each group of cooling holes 113 corresponds to two seals, and two cooling holes 113 in a group are connected through a third cooling hole 113. Figure 3 As shown, this reduces the number of leaks in the cooling holes 113 and the number of seals 300.

[0060] The sealing element 300 can be a sealing plug. Except for the cooling water outlet 112 and the cooling water inlet 111, the outer side of the single-section cooling hole 113 can be sealed by the sealing element 300. Compared with the plug sealing in the related technology, the embodiment of this application reduces the number of sealing points of the cooling hole 113 and reduces the possibility of water leakage.

[0061] In one possible implementation, the sprue jacket cooling structure provided in this application has a cooling groove 120 with a depth greater than or equal to the depth of the cooling channel 110, which prolongs the residence time of the cooling medium in the high-temperature zone 101 and enhances the local cooling intensity.

[0062] The cooling tank 120 extends from the outside of the sprue sleeve body 100 into the inside of the sprue sleeve body 100 and communicates with the cooling hole 113 inside the sprue sleeve body 100. The cover plate and bottom plate 210 cover the sprue sleeve body 100 to seal the bottom of the cooling tank 120. The increased depth of the cooling tank 120 increases the contact area with the high temperature zone 101, focusing on strengthening the cooling zone to accelerate the solidification of the molten metal, reduce the production cycle, and improve the efficiency of die casting production.

[0063] In one possible implementation, the sprue cooling structure provided in this application has the cover plate bottom plate 210 welded to the sprue body 100. This application achieves a permanent seal between the sprue body 100 and the cover plate bottom plate 210 through the weld groove 102, which is suitable for high temperature and high pressure environments.

[0064] Alternatively, it may also include a connector 400, which passes through the cover plate base 210 and connects to the sprue sleeve body 100, so that the cover plate base 210 is connected to the sprue sleeve body 100. This application uses bolts to tighten the cover plate base 210, which is convenient for disassembly and maintenance and is suitable for scenarios that require frequent replacement.

[0065] The connector 400 can be a screw, bolt, etc., for example, Figure 7 As shown, the cover plate base plate 210 can be connected to the sprue sleeve body 100 through the mounting hole 401 by bolts and pressed tightly to seal.

[0066] In addition, this application also provides a die casting mold, including the sprue cooling structure of any of the above embodiments.

[0067] For example, a die-casting mold includes a fixed mold base plate, a cavity plate, and a sprue cooling structure as described in the above embodiments. The sprue body is embedded in the cavity plate, and its high-temperature zone corresponds to the sprue position in the cavity. The cooling inlet 111 of the cooling channel 110 is connected to the mold cooling system, and the cooling outlet 112 is connected to an external circulation device. The arc-shaped concave portion 221 of the water-turning plate 220 cooperates with the cooling tank 120 to increase the turbulence intensity of the cooling medium, thereby achieving cooling of the high-temperature zone of the sprue during the metal die-casting process.

[0068] During the die-casting production process, the cooling medium flows in from the cooling outlet 112 of the cooling channel 110, flows through the cooling tank 120 and the water-turning vanes 220, and then flows out through the outlet of the cooling channel 110. Figure 3 and Figure 6 As indicated by the arrow, the cooling and heat exchange function is achieved. The contact area between the cooling medium at the cooling tank 120 and the sprue sleeve body 100 is the largest, and the cooling medium is the most densely distributed. This enables the high-temperature zone 101 located above the sprue sleeve and in contact with the molten metal to be cooled in a focused manner, thereby accelerating the solidification of the molten metal, reducing the production cycle, and improving the efficiency of die casting production.

[0069] The above embodiments are merely preferred embodiments provided to fully illustrate the present utility model, and the protection scope of the present utility model is not limited thereto. Equivalent substitutions or modifications made by those skilled in the art based on the present utility model are all within the protection scope of the present utility model.

Claims

1. A gate sleeve cooling structure, characterized in that, include: A sprue bushing body (100) has a high-temperature zone (101) on it. The sprue bushing body (100) has a cooling channel (110) and at least one cooling tank (120) inside it. The cooling tank (120) is connected to the cooling channel (110), and at least a portion of the cooling tank (120) is correspondingly arranged to the high-temperature zone (101). The cooling channel (110) has a cooling inlet (111) and a cooling outlet (112). The cooling medium entering the cooling channel (110) from the cooling inlet (111) cools the high-temperature zone (101) through the cooling tank (120) and flows out from the cooling outlet (112). A cover (200) is provided on at least a portion of the gate sleeve body (100), and a portion of the cover (200) is inserted into the cooling tank (120) to disturb the flow of the cooling medium in the cooling tank (120).

2. The gate sleeve cooling structure according to claim 1, characterized in that: The cover (200) includes a cover plate bottom plate (210) and at least one water-turning plate (220). The water-turning plate (220) is connected to the cover plate bottom plate (210), the water-turning plate (220) is inserted into the cooling tank (120), and one end of the water-turning plate (220) is spaced from the bottom of the cooling tank (120). The cover plate bottom plate (210) covers the sprue sleeve body (100).

3. The sprue sleeve cooling structure according to claim 2, characterized in that: The water-turning plate (220) has an arc-shaped recess (221) located at one end of the water-turning plate (220) facing the cooling tank (120).

4. The sprue sleeve cooling structure according to claim 2, characterized in that: The cooling channel (110) includes a plurality of cooling holes (113), which are arranged sequentially along the circumference of the sprue sleeve body (100), and adjacent two cooling holes (113) are connected. The cooling groove (120) is connected to at least one of the cooling holes (113).

5. The sprue bushing cooling structure according to claim 4, characterized in that: The cooling tank (120) includes multiple sub-grooves (121), and the number of water-turning blades (220) is multiple. The multiple sub-grooves (121) are arranged sequentially along the circumference of the sprue sleeve body (100) and are interconnected with each other. The water-turning blades (220) are inserted into the sub-grooves (121) in a one-to-one correspondence.

6. The sprue bushing cooling structure according to claim 4 or 5, characterized in that: The extension directions of two adjacent cooling holes (113) intersect.

7. The sprue bushing cooling structure according to claim 4 or 5, characterized in that: It also includes at least one seal (300), one end of at least one of the cooling holes (113) extending to the outer periphery of the sprue sleeve body (100), the seal (300) being used to seal one end of the cooling hole (113).

8. The gate sleeve cooling structure according to any one of claims 1-5, characterized in that: The depth of the cooling tank (120) is greater than or equal to the depth of the cooling channel (110).

9. The sprue sleeve cooling structure according to any one of claims 2-5, characterized in that: The cover plate bottom plate (210) is welded to the sprue sleeve body (100), or it may also include a connector (400) that passes through the cover plate bottom plate (210) and connects to the sprue sleeve body (100) so that the cover plate bottom plate (210) and the sprue sleeve body (100) are detachably connected.

10. A die-casting mold, characterized in that: The sprue jacket cooling structure includes any one of claims 1-9.

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