Cooling device for annular die castings

Abstract

The utility model discloses a cooling device for annular die castings. The cooling device comprises a rack, an upper cooling piece, a lower cooling piece and a telescopic device. The upper cooling piece is installed on the upper portion of the rack, and the lower cooling piece is installed on the lower portion of the rack. The telescopic device is suitable for driving at least one of the upper cooling piece and the lower cooling piece to move so that the upper cooling piece and the lower cooling piece can get close to each other, and then a cooling cavity for conducting attached cooling on all the side walls of the annular die casting is formed. The cooling device has the beneficial effects that compared with a traditional mode that only the outer side wall of the annular die casting can be cooled, both the inner side wall and the outer side wall of the annular die casting can be cooled, then the cooling effect of the annular die casting can be improved, and in other words, the structural performance strength of the cooled annular die casting is improved.

Description

Technical Field

[0001] The present application relates to the technical field of parts processing, and in particular to a cooling device for annular die castings. Background Art

[0002] After the casting is completed, cooling of the casting is an important task, and cooling has a great impact on the quality of the casting. At present, the commonly used cooling methods in the market mainly include natural cooling and manual cooling. The efficiency of natural cooling is relatively low, and it is gradually replaced by manual cooling. Due to the structural characteristics of annular die castings, the existing manual cooling method is mainly to cool the outer wall of the annular die castings, which results in the cooling effect of the inner wall, bottom and upper edge being much worse than that of the outer wall, which in turn leads to the poor cooling effect of the annular die castings. Utility Model Content

[0003] One of the objects of the present application is to provide a cooling device for annular die castings that can solve at least one of the defects in the above-mentioned background technology.

[0004] In order to achieve at least one of the above-mentioned purposes, the technical solution adopted in the present application is: a cooling device for annular die-castings, comprising a frame, an upper cooling member, a lower cooling member and a telescopic device; the upper cooling member is installed on the upper part of the frame, and the lower cooling member is installed on the lower part of the frame; the telescopic device is suitable for driving at least one of the upper cooling member and the lower cooling member to move so that the upper cooling member and the lower cooling member are close to each other, thereby forming a cooling cavity for fitting and cooling all side walls of the annular die-casting.

[0005] Preferably, the lower cooling member is provided with a first cooling surface for cooling the lower end surface and the outer side wall of the annular die casting, and the upper cooling member is provided with a second cooling surface for cooling the upper end surface and the inner side wall of the annular die casting.

[0006] Preferably, the upper cooling member is provided with a first cooling surface for cooling the upper end surface and the outer side wall of the annular die casting, and the lower cooling member is provided with a second cooling surface for cooling the lower end surface and the inner side wall of the annular die casting.

[0007] Preferably, one of the upper cooling member and the lower cooling member is provided with a first cooling surface for cooling one end surface and inner and outer side walls of the annular die casting, and the other cooling member is provided with a second cooling surface for cooling the other end surface of the annular die casting.

[0008] Preferably, the lower cooling member is cylindrical, and the inner cavity side wall and the inner cavity bottom surface of the lower cooling member together form the first cooling surface; the upper cooling member includes a disc-shaped horizontal cooling portion and a columnar vertical cooling portion, and the vertical cooling portion is fixedly arranged at the center of the lower end surface of the horizontal cooling portion, so that the side portion of the lower end surface of the horizontal cooling portion and the outer side of the vertical cooling portion cooperate to form the second cooling surface.

[0009] Preferably, a first cavity corresponding to the first cooling surface is provided inside the lower cooling part, and cooling water is circulated into the first cavity so as to cool the annular die-casting part by the first cooling surface; a second cavity and a third cavity are respectively provided inside the horizontal cooling part and the vertical cooling part, and the second cavity and the third cavity correspond to the second cooling surface together, and then cooling water is circulated into the second cavity and the third cavity so as to cool the annular die-casting part by the second cooling surface.

[0010] Preferably, a water inlet and a water outlet communicating with the first cavity are respectively provided on an upper side and a lower side of the lower cooling member.

[0011] Preferably, the second cavity is connected to the third cavity, and a water inlet and a water outlet connected to the second cavity are respectively provided on two opposite sides of the top of the horizontal cooling part; a partition is provided in the second cavity to separate the second cavity into two non-communicating parts, and the partition is located between the water inlet and the water outlet.

[0012] Preferably, the inner cavity side wall and the inner cavity bottom surface of the lower cooling part are both wrapped with a first circulation pipe, and cooling water is circulated into the first circulation pipe to cool the first cooling surface for cooling the annular die-casting; the lower end surface of the horizontal cooling part and the outer side wall of the vertical cooling part are both wrapped with a second circulation pipe, and cooling water is circulated into the second circulation pipe to cool the second cooling surface for cooling the annular die-casting.

[0013] Preferably, the lower cooling member is fixedly mounted on the frame, and the telescopic device is suitable for driving the upper cooling member to move vertically through the output end so as to be close to or away from the lower cooling member.

[0014] Preferably, a water cooling bin is provided on one side of the rack for supplying water to the lower cooling element through a first water inlet pipe and for supplying water to the upper cooling element through a second water inlet pipe; the second water inlet pipe is connected to the top of the rack through a suspension assembly, so that when the upper cooling element moves downward, the second water inlet pipe always remains suspended, thereby avoiding contact with the upper cooling element and the lower cooling element.

[0015] Preferably, the suspension assembly includes a connecting plate and a spring; the connecting plate is installed on the second water inlet pipe, and the spring is vertically suspended on the top of the frame and connected to the connecting plate through the lower end; and then when the upper cooling member moves downward, the spring is elastically stretched to pull the second water inlet pipe to keep it suspended.

[0016] Compared with the prior art, the beneficial effects of this application are:

[0017] Compared with the traditional method of cooling only the outer wall of the annular die-casting, the present application can cool both the inner and outer walls of the annular die-casting, thereby improving the cooling effect of the annular die-casting, that is, improving the structural performance strength of the annular die-casting after cooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0019] Figure 2 For this utility model Figure 1 A local enlarged schematic diagram of point A in the middle.

[0020] Figure 3 It is a structural schematic diagram of the first embodiment of the lower cooling member in the utility model.

[0021] Figure 4 It is a structural schematic diagram of embodiment 1 of the upper cooling member in the utility model.

[0022] Figure 5 The figure is a schematic diagram of the state of the upper cooling member and the lower cooling member in the first embodiment of the utility model cooperating with each other.

[0023] Figure 6 It is a structural schematic diagram of the second embodiment of the lower cooling member of the utility model.

[0024] Figure 7 It is a structural schematic diagram of the second embodiment of the upper cooling member in the utility model.

[0025] Figure 8 It is a schematic diagram of the state of the upper cooling member and the lower cooling member in the second embodiment of the utility model cooperating with each other.

[0026] In the figure: a frame 100, a lower cooling member 21, a first cavity 210, an upper cooling member 22, a horizontal cooling portion 221, a second cavity 2210, a partition 2211, a vertical cooling portion 222, a third cavity 2220, a first water inlet pipe 201, a first water outlet pipe 202, a second water inlet pipe 203, a second water outlet pipe 204, a first circulation pipe 23, a second circulation pipe 24, a water cooling bin 300, a telescopic device 400, a suspension assembly 5, a connecting plate 51, a spring 52, and an annular die-casting 600. DETAILED DESCRIPTION

[0027] Below, the present application is further described in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0028] In the description of the present application, it should be noted that directional words, such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of narrating 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 cannot be understood as limiting the specific scope of protection of the present application.

[0029] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0030] The terms "including" and "having" and any variations thereof in the specification and claims of this application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products or apparatuses.

[0031] Embodiment 1:

[0032] like Figures 1 to 5 As shown, a cooling device for an annular die casting includes a frame 100, an upper cooling member 22, a lower cooling member 21, and a telescopic device 400. The frame 100 is used for supporting and installing the entire device; the upper cooling member 22 is installed on the upper part of the frame 100 for cooling a part of the annular die casting machine 600, and the lower cooling member 21 is installed on the lower part of the frame 100 for cooling another part of the annular die casting 600. The telescopic device 400 can drive at least one of the upper cooling member 22 and the lower cooling member 21 to move, so that the upper cooling member 22 and the lower cooling member 21 are close to each other, thereby forming a cooling cavity for fitting and cooling all the side walls of the annular die casting 600.

[0033] It should be known that the entire sidewall of the annular die casting 600 includes an upper end face and a lower end face, an outer sidewall and an inner sidewall in a circular shape. The upper cooling member 22 and the lower cooling member 21 can achieve the cooling of all four faces of the annular die casting 600, thereby increasing the cooling area of ​​the annular die casting 600 to improve the cooling effect. Moreover, cooling the entire sidewall of the annular die casting 600 can also ensure the uniformity of cooling, thereby effectively improving the performance of the annular die casting 600 after cooling.

[0034] In this embodiment, there are multiple arrangements of the cooling areas of the annular die casting 600 for the upper cooling member 22 and the lower cooling member 21, including but not limited to the following two.

[0035] Arrangement mode 1: the lower cooling member 21 and the upper cooling member 22 can cool the remaining end surface and one of the side walls of the annular die casting 600 respectively.

[0036] Specifically, there are two main ways to achieve this. Figures 3 to 5 As shown, the lower cooling member 21 is provided with a first cooling surface for cooling the lower end surface and the outer side wall of the annular die casting 600, and the upper cooling member 22 is provided with a second cooling surface for cooling the upper end surface and the inner side wall of the annular die casting 600. The second type: the upper cooling member 22 is provided with a first cooling surface for cooling the upper end surface and the outer side wall of the annular die casting 600, and the lower cooling member 21 is provided with a second cooling surface for cooling the lower end surface and the inner side wall of the annular die casting 600.

[0037] Arrangement method two: Among the upper cooling member 22 and the lower cooling member 21, one of the cooling members is provided with a first cooling surface for cooling one end surface and the inner and outer side walls of the annular die casting 600, and the other cooling member is provided with a second cooling surface for cooling the other end surface of the annular die casting 600.

[0038] Specifically, there are two main implementation methods. The first method: the lower cooling member 21 is provided with a first cooling surface for cooling the lower end surface and the inner and outer side walls of the annular die casting 600, and the upper cooling member 22 is provided with a second cooling surface for cooling the upper end surface of the annular die casting 600. The second method: the lower cooling member 21 is provided with a first cooling surface for cooling the lower end surface of the annular die casting 600, and the upper cooling member 22 is provided with a second cooling surface for cooling the upper end surface and the inner and outer side walls of the annular die casting 600.

[0039] It is understandable that both of the above two arrangements can meet the needs of this application. For ease of understanding, the specific structures of the upper cooling member 22 and the lower cooling member 21 are described in detail below according to the above arrangement.

[0040] For the first implementation of arrangement mode 1; Figures 3 to 5 As shown, the lower cooling member 21 is cylindrical. When the annular die-casting 600 is placed in the lower cooling member 21, the lower end face and the outer side wall of the annular die-casting 600 will correspond to the inner cavity bottom face and the inner cavity side wall of the lower cooling member 21 respectively, that is, the inner cavity side wall and the inner cavity bottom face of the lower cooling member 21 jointly form a first cooling surface for cooling the lower end face and the outer side wall of the annular die-casting 600.

[0041] The upper cooling member 22 includes a disc-shaped horizontal cooling portion 221 and a columnar vertical cooling portion 222, and the vertical cooling portion 222 is fixedly arranged at the center of the lower end surface of the horizontal cooling portion 221. When the upper cooling member 22 is close to the annular die casting 600 placed in the lower cooling member 21, the upper end surface and the inner side wall of the annular die casting 600 will correspond to the lower end surface side of the horizontal cooling portion 221 and the outer side wall of the vertical cooling portion 222, that is, the lower end surface side of the horizontal cooling portion 221 and the outer side of the vertical cooling portion 222 can cooperate to form a second cooling surface for cooling the upper end surface and the inner side wall of the annular die casting 600.

[0042] The second implementation of the arrangement mode 1 can be regarded as swapping the positions of the lower cooling member 21 and the upper cooling member 22 in the first implementation of the arrangement mode 1 mentioned above.

[0043] For the first implementation of the second arrangement, the lower cooling member 21 is cylindrical as a whole, but a vertical cooling portion 222 is provided at the center of the inner cavity of the lower cooling member 21. When the annular die-casting 600 is placed in the lower cooling member 21, the lower end face and the outer side wall of the annular die-casting 600 will correspond to the side of the inner cavity bottom surface and the inner cavity side wall of the lower cooling member 21 respectively, and the inner side wall of the annular die-casting 600 will correspond to the outer side wall of the vertical cooling portion 222, that is, the lower cooling member 21 is provided with a first cooling surface capable of cooling the inner and outer side walls and the lower end face of the annular die-casting 600.

[0044] The upper cooling member 22 is disc-shaped. When the upper cooling member 22 is close to the annular die-casting 600 placed in the lower cooling member 21, the upper end surface of the annular die-casting 600 will correspond to the lower end surface of the upper cooling member 22, that is, the upper cooling member 22 is provided with a second cooling surface that can cool the upper end surface of the annular die-casting 600.

[0045] The second implementation method corresponding to the second arrangement method can be regarded as swapping the positions of the lower cooling member 21 and the upper cooling member 22 in the first implementation method of the second arrangement method.

[0046] It should be noted that, for the convenience of description, the subsequent content of this application will be described by taking the first implementation method of arrangement mode 1 as an example.

[0047] In this embodiment, Figures 3 to 5 As shown, the lower cooling member 21 is provided with a first cavity 210 corresponding to the first cooling surface, and cooling water is circulated into the first cavity 210 to cool the annular die casting 600 on the first cooling surface. The horizontal cooling portion 221 and the vertical cooling portion 222 are provided with a second cavity 2210 and a third cavity 2220 respectively, and the second cavity 2210 and the third cavity 2220 correspond to the second cooling surface together, and cooling water is circulated into the second cavity 2210 and the third cavity 2220 to cool the annular die casting 600 on the second cooling surface.

[0048] It should be known that the artificial intervention cooling method mainly adopts water cooling, that is, cooling water is used as a heat transfer medium. After cooling water is introduced into the first cavity 210, the second cavity 2210 and the third cavity 2220, the heat of the annular die casting 600 can be transferred to the cooling water through the thin walls of the lower cooling member 21 and the upper cooling member 22, and then the cooling water can absorb the heat and transfer the heat to the outside through the circulation flow, thereby achieving uniform cooling of the annular die casting 600 and accelerating the cooling speed.

[0049] It should also be known that the circulation flow of the cooling water has a certain influence on the specific cooling effect of the annular die casting 600. In layman's terms, if the cooling water in the first cavity 210, the second cavity 2210 and the third cavity 2220 can all be kept circulating, the best cooling effect will be achieved for the annular die casting 600. In order to ensure a better cooling effect for the annular die casting 600, the flow structure of the cooling water in the first cavity 210, the second cavity 2210 and the third cavity 2220 can be set.

[0050] Specifically, Figure 3 As shown, the upper side and the lower side of the lower cooling member 21 are respectively provided with a water inlet and a water outlet connected to the first cavity 210. Thus, cooling water can flow into the first cavity 210 through the first water inlet pipe 201 connected to the water inlet, and then the cooling water in the first cavity 210 can be discharged along the first water outlet pipe 202 connected to the water outlet under the action of gravity after carrying heat flow.

[0051] Specifically, there are many ways to configure the cooling water flow structure of the upper cooling member 22, including but not limited to the following two.

[0052] Setting method 1: Figure 4As shown, the second cavity 2210 is connected to the third cavity 2220, and a water inlet and a water outlet connected to the second cavity 2210 are respectively arranged on two opposite sides of the top of the horizontal cooling part 221; a partition 2211 is arranged in the second cavity 2210 to separate the second cavity 2210 into two non-connected parts, and the partition 2211 is located between the water inlet and the water outlet. Figure 4 For example, cooling water can flow into the left area of ​​the second cavity 2210 through the second water inlet pipe 203 connected to the water inlet, then flow into the third cavity 2220 along the connecting position between the left side of the second cavity 2210 and the third cavity 2220, and then flow into the right side of the second cavity 2210 at the connecting position between the third cavity 2220 and the right side of the second cavity 2210, and finally be discharged from the second water outlet pipe 204 connected to the water outlet. During the flow of cooling water, it will carry and absorb the heat transferred by the annular die casting 600.

[0053] It can be understood that the setting of the partition 2211 can force the cooling water to enter the third cavity 2220; if there is no partition 2211, most of the cooling water entering the second cavity 2210 will be directly discharged from left to right along the water outlet, making the cooling effect of the area of ​​the second cooling surface corresponding to the third cavity 2220 poor.

[0054] Arrangement mode 2: the second cavity 2210 is connected to the third cavity 2220, a water inlet connected to the second cavity 2210 is arranged at the top of the horizontal cooling part 221, and a water outlet connected to the third cavity 2220 is arranged at the inner side of the lower part of the third cavity 2220. Thus, the cooling water can flow into the second cavity 2210 through the second water inlet pipe 203 connected to the water inlet, and under the action of gravity, it will flow into the third cavity 2220 until it is discharged along the second water outlet pipe 204 connected to the water outlet.

[0055] In this embodiment, Figure 1 As shown, a water cooling chamber 300 is provided on one side of the rack 100 for supplying water to the lower cooling member 21 through a first water inlet pipe 201 and for supplying water to the upper cooling member 22 through a second water inlet pipe 203. The water cooling chamber 300 contains room temperature or low temperature cooling water, and the cooling water in the water cooling chamber 300 can be pumped into the first water inlet pipe 201 and the second water inlet pipe 203 by a water pump.

[0056] In this embodiment, there are many specific structures of the telescopic device 400. Common telescopic devices 400 include hydraulic cylinders, air cylinders, and linear motors. Similarly, there are many ways to drive the telescopic device 400. The telescopic device 400 may only drive the upper cooling member 22 to move closer to or away from the lower cooling member 21; the telescopic device 400 may only drive the lower cooling member 21 to move closer to or away from the upper cooling member 22; or there may be two telescopic devices 400, which respectively drive the upper cooling member 22 and the lower cooling member 21 to move closer to or away from each other. In order to save costs and facilitate operation, such as Figure 1 As shown, in this embodiment, the telescopic device 400 is preferably used to drive the upper cooling member 22 to move vertically closer to or farther away from the lower cooling member 21, that is, the telescopic device 400 is installed on the top of the frame 100 and is connected to the center of the upper end surface of the upper cooling member 22 through the output end.

[0057] It should be known that, from the installation method of the telescopic device 400, when the upper cooling member 22 moves downward, the second water inlet pipe 203 connected to the water cooling bin 300 will swing downward with the upper cooling member 22, and the second water inlet pipe 203 may swing to contact the upper cooling member 22 or extend to contact the lower cooling member 21, thereby causing the wear of the second water inlet pipe 203 to increase; at the same time, the connection position of the second water inlet pipe 203 and the water cooling bin 300 will undergo continuous twisting, which may cause the connection position of the second water inlet pipe 203 and the water cooling bin 300 to be sprained.

[0058] In this embodiment, in order to protect the second water inlet pipe 203, Figure 1 and Figure 2 As shown, the second water inlet pipe 203 is connected to the top of the rack 100 through the suspension assembly 5, so that when the upper cooling member 22 moves downward, the second water inlet pipe 203 always remains suspended, thereby avoiding contact with the upper cooling member 22 and the lower cooling member 21, and ensuring that the connection position of the second water inlet pipe 203 and the water cooling bin 300 remains basically stable.

[0059] Specifically, there are many specific structures of the suspension assembly 5, one of which is as follows: Figure 1 and Figure 2 As shown, the suspension assembly 5 includes a connecting plate 51 and a spring 52; the connecting plate 51 is installed on the second water inlet pipe 203, and the spring 52 is vertically suspended on the top of the frame 100 and connected to the connecting plate 51 through the lower end; then, when the upper cooling member 22 moves downward, the spring 52 is elastically stretched to pull the second water inlet pipe 203 to maintain elastic suspension.

[0060] Embodiment 2:

[0061] Compared with the first embodiment, the difference of this embodiment is that: Figures 6 to 8As shown, the inner cavity side wall and the inner cavity bottom surface of the lower cooling member 21 are both wound with a first circulation pipe 23, and cooling water is circulated into the first circulation pipe 23 to cool the annular die casting 600 on the first cooling surface. The lower end surface of the horizontal cooling portion 221 and the outer side wall of the vertical cooling portion 222 are both wound with a second circulation pipe 24, and cooling water is circulated into the second circulation pipe 24 to cool the annular die casting 600 on the second cooling surface.

[0062] The above describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and the specification only describe the principles of the present application. The present application may have various changes and improvements without departing from the spirit and scope of the present application, and these changes and improvements fall within the scope of the present application for which protection is sought. The scope of protection claimed by the present application is defined by the attached claims and their equivalents.

Claims

1. A cooling device for annular die castings, characterized in that: include: frame; Upper cooling member; the upper cooling member is installed on the upper part of the frame; A lower cooling member; the lower cooling member is installed at the lower part of the frame; as well as The telescopic device is suitable for driving at least one of the upper cooling member and the lower cooling member to move so that the upper cooling member and the lower cooling member are close to each other, thereby forming a cooling cavity for fitting and cooling the entire side wall of the annular die casting.

2. The cooling device for annular die castings according to claim 1, characterized in that: The lower cooling member is provided with a first cooling surface for cooling the lower end surface and the outer side wall of the annular die casting, and the upper cooling member is provided with a second cooling surface for cooling the upper end surface and the inner side wall of the annular die casting; Alternatively, the upper cooling member is provided with a first cooling surface for cooling the upper end surface and the outer side wall of the annular die casting, and the lower cooling member is provided with a second cooling surface for cooling the lower end surface and the inner side wall of the annular die casting.

3. The cooling device for annular die castings according to claim 1, characterized in that: Among the upper cooling member and the lower cooling member, one cooling member is provided with a first cooling surface for cooling one end surface and inner and outer side walls of the annular die casting, and the other cooling member is provided with a second cooling surface for cooling the other end surface of the annular die casting.

4. The cooling device for annular die castings according to claim 2, characterized in that: The lower cooling member is cylindrical, and the inner cavity side wall and the inner cavity bottom surface of the lower cooling member together form the first cooling surface; The upper cooling member includes a disc-shaped horizontal cooling portion and a columnar vertical cooling portion, wherein the vertical cooling portion is fixedly arranged at the center of the lower end surface of the horizontal cooling portion so that the side of the lower end surface of the horizontal cooling portion and the outer side of the vertical cooling portion cooperate to form the second cooling surface.

5. The cooling device for annular die castings according to claim 4, characterized in that: A first cavity corresponding to the first cooling surface is provided inside the lower cooling member, and cooling water is circulated into the first cavity to cool the annular die casting on the first cooling surface; A second cavity and a third cavity are respectively provided inside the horizontal cooling part and the vertical cooling part, and the second cavity and the third cavity correspond to the second cooling surface together, and then cooling water is circulated into the second cavity and the third cavity to cool the annular die-casting part on the second cooling surface.

6. The cooling device for annular die castings according to claim 5, characterized in that: The second cavity is connected to the third cavity, and a water inlet and a water outlet connected to the second cavity are respectively provided on two opposite sides of the top of the horizontal cooling part; A partition is arranged in the second cavity to divide the second cavity into two non-communicating parts, and the partition is located between the water inlet and the water outlet.

7. The cooling device for annular die castings according to claim 4, characterized in that: The inner cavity side wall and the inner cavity bottom surface of the lower cooling member are both wound with a first circulation pipe, and cooling water is circulated into the first circulation pipe to cool the annular die casting on the first cooling surface; A second circulation pipe is wound around the lower end surface of the horizontal cooling portion and the outer side wall of the vertical cooling portion, and cooling water is circulated into the second circulation pipe to cool the annular die casting on the second cooling surface.

8. The cooling device for annular die castings according to claim 5 or 7, characterized in that: The lower cooling member is fixedly mounted on the frame, and the telescopic device is suitable for driving the upper cooling member to move vertically through the output end so as to be close to or away from the lower cooling member.

9. The cooling device for annular die castings according to claim 8, characterized in that: A water cooling chamber is provided on one side of the rack for supplying water to the lower cooling element through a first water inlet pipe and for supplying water to the upper cooling element through a second water inlet pipe; The second water inlet pipe is connected to the top of the rack through a suspension assembly, so that when the upper cooling element moves downward, the second water inlet pipe always remains suspended.

10. The cooling device for annular die castings according to claim 9, characterized in that: The suspension assembly includes a connecting plate and a spring; the connecting plate is installed on the second water inlet pipe, and the spring is vertically suspended on the top of the frame and connected to the connecting plate through the lower end; and when the upper cooling member moves downward, the spring is elastically stretched to pull the second water inlet pipe to keep it suspended.

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