Point cooling structure and low-pressure casting equipment
By adopting a point-cooled structure in low-pressure casting equipment and using the direct contact between the tail pipe and the mold, the problem of short service life of the cooling structure is solved, and a more efficient and even cooling effect is achieved, extending the service life of the equipment.
Patent Information
- Application Number
- CN202422686476.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-05
- Publication Date
- 2025-08-19
- Estimated Expiration
- 2034-11-05
AI Technical Summary
The cooling structure in existing low-pressure casting equipment has a short service life, and copper gaskets are prone to oxidation in high temperature and humid environments, resulting in unstable cooling effect and affecting the quality and production efficiency of aluminum alloy wheels.
The point-cooling structure is adopted, including the water inlet pipe, the return pipe, the outer branch pipe, the inner branch pipe and multiple tail pipes. The tail pipe is in direct contact with the mold to form multi-point cooling. The coolant forms a smooth passage through the outer branch pipe, the inner branch pipe and the tail pipe, and the use of copper gaskets is omitted.
It improves heat transfer efficiency and cooling uniformity, extends the service life of the cooling structure, avoids the oxidation problem of copper gaskets, and reduces material and assembly costs.
Smart Images
Figure CN223235044U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of low-pressure casting equipment, and more specifically, relates to a spot cooling structure and low-pressure casting equipment. Background Art
[0002] In the production process of low-pressure cast aluminum alloy wheels, cooling is a critical step in ensuring product quality and production efficiency. Traditionally, this process is primarily achieved through the use of a contact water pan. The contact water pan works by contacting the wheel mold surface, removing heat through water circulation, thereby effectively accelerating the wheel's curing process. However, in actual application, the contact water pan requires the use of a thermally conductive copper gasket to ensure efficient and uniform heat transfer.
[0003] As an excellent thermal conductor, copper gaskets significantly improve cooling efficiency during initial use, ensuring the wheel hub's cooling rate meets production requirements, thereby ensuring a uniform structure and excellent mechanical properties. However, over time, copper gaskets can gradually degrade under conditions of high temperature, humidity, and oxidation. This degradation is primarily manifested by the formation of an oxide layer on the copper gasket's surface, which not only reduces its thermal conductivity but can also lead to poor contact between the gasket and the wheel hub or water pan, compromising the consistency and stability of the cooling effect.
[0004] More seriously, the lifespan of copper gaskets is difficult to accurately predict, as their oxidation rate is affected by a variety of factors, including water quality, operating temperature, and operating pressure. Failure to promptly replace copper gaskets beyond their service life can lead to widespread quality issues, such as uneven stress distribution within the wheel hub and increased surface defects, ultimately leading to increased scrap rates. Utility Model Content
[0005] The purpose of the embodiments of the present application is to provide a spot cooling structure and low-pressure casting equipment to solve the technical problem of short service life of the cooling structure in the low-pressure casting equipment in the prior art.
[0006] To achieve the above objectives, the technical solution adopted in this application is:
[0007] A spot cooling structure is provided, comprising a water inlet pipe, a water return pipe, an outer branch pipe, an inner branch pipe and a plurality of tail pipes;
[0008] Each of the tail pipes is arranged on the mold to be cooled at intervals, with one end of the tail pipe in contact with the mold to be cooled; the outer branch pipe is connected to the other end of the tail pipe; the inner branch pipe is inserted into the outer branch pipe, and one end of the inner branch pipe extends into the tail pipe;
[0009] The water inlet pipe is communicated with one of the outer branch pipe and the inner branch pipe, and the water return pipe is communicated with the other of the outer branch pipe and the inner branch pipe.
[0010] As a further improvement of the above technical solution:
[0011] Optionally, one end of the tail pipe is welded to the mold to be cooled, and the mold to be cooled is sealed at the pipe opening at one end of the tail pipe.
[0012] Optionally, a guide cone portion is provided at one end of the outer branch pipe and the tail pipe, and a tapered hole is provided at the other end of the outer branch pipe and the tail pipe. When the outer branch pipe and the tail pipe are docked, the guide cone portion cooperates with the tapered hole.
[0013] Optionally, a butt fastener is further included, which is sleeved on one of the outer branch pipe and the tail pipe and is threadedly connected to the other of the outer branch pipe and the tail pipe.
[0014] Optionally, the water inlet pipe and / or the water return pipe extends in a circumferential direction.
[0015] Optionally, there are multiple water inlet pipes and / or water return pipes, and each water inlet pipe and / or water return pipe extends along a circle with a different radius.
[0016] Optionally, the water inlet pipe is sleeved on the outside of the return pipe, the water inlet pipe is connected to the outer branch pipe, and the return pipe is connected to the inner branch pipe; or, the return pipe is sleeved on the outside of the water inlet pipe, the return pipe is connected to the outer branch pipe, and the water inlet pipe is connected to the inner branch pipe.
[0017] Optionally, the inner branch pipe and the outer branch pipe are coaxially arranged.
[0018] The present application also provides a low-pressure casting device, including the above-mentioned spot cooling structure.
[0019] Compared with the prior art, the beneficial effects of the present invention are:
[0020] The present application provides a spot cooling structure, including a water inlet pipe, a water return pipe, an outer branch pipe, an inner branch pipe and a plurality of tail pipes. The tail pipes are arranged on the mold to be cooled at intervals, and one end of the tail pipe is in contact with the mold to be cooled, thereby forming heat conduction with the mold to be cooled. By setting up a plurality of tail pipes, multi-point cooling is formed on the mold to be cooled, which not only increases the heat exchange area, but also makes the cooling of the mold more uniform, effectively improving the overall cooling efficiency. In order to further optimize the compactness of the structure and reduce the potential risk of leakage, the outer branch pipe is connected to the other end of the tail pipe; the inner branch pipe is inserted into the interior of the outer branch pipe, and one end of the inner branch pipe extends into the tail pipe to provide a smooth channel for the circulation of the coolant. The water inlet pipe is connected to one of the outer branch pipe and the inner branch pipe, and the water return pipe is connected to the other of the outer branch pipe and the inner branch pipe. This creates two coolant flow paths: one where the coolant enters the spot cooling structure from the water inlet pipe, flows sequentially through the outer branch pipe, the tail pipe, and the inner branch pipe, and finally exits the spot cooling structure through the return pipe. Alternatively, the coolant enters the spot cooling structure from the water inlet pipe, flows sequentially through the inner branch pipe, the tail pipe, the outer branch pipe, and finally exits the spot cooling structure through the return pipe. Compared to traditional structures that rely on copper gaskets for cooling, the spot cooling structure of this application, with its tail pipe in direct contact with the mold to be cooled, not only eliminates additional assembly steps and material costs, but also improves the efficiency of heat transfer and extends the service life of the structure. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the spot cooling structure of the present application;
[0023] Figure 2 It is a schematic cross-sectional view of the spot cooling structure of the present application;
[0024] Figure 3 yes Figure 2 Schematic diagram of the local enlarged structure.
[0025] Among them, the reference numerals in the figures are:
[0026] 1. Water inlet pipe; 2. Water return pipe;
[0027] 3. External branch pipe; 4. Internal branch pipe;
[0028] 5. Tail pipe; 6. Mold to be cooled;
[0029] 7. Docking fasteners. DETAILED DESCRIPTION
[0030] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.
[0031] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.
[0032] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", 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 this 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 this application.
[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.
[0034] Unless otherwise defined, all technical terms used hereinafter have the same meanings as those generally understood by those skilled in the art. The technical terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the scope of protection of the present invention.
[0035] like Figure 1 and Figure 2 As shown, the present application provides a spot cooling structure, including a water inlet pipe 1, a water return pipe 2, an outer branch pipe 3, an inner branch pipe 4 and a plurality of tail pipes 5.
[0036] Specifically, the tail pipes 5 are arranged on the mold 6 to be cooled at intervals, and one end of the tail pipe 5 is in contact with the mold 6 to be cooled, thereby forming heat conduction with the mold 6 to be cooled. By setting up multiple tail pipes 5, multi-point cooling is formed on the mold 6 to be cooled, which not only increases the heat exchange area, but also makes the cooling of the mold 6 more uniform, effectively improving the overall cooling efficiency.
[0037] In order to further optimize the compactness of the structure and reduce potential leakage risks, the outer branch pipe 3 is connected to the other end of the tail pipe 5; the inner branch pipe 4 is inserted into the interior of the outer branch pipe 3. It is worth noting that one end of the inner branch pipe 4 extends into the tail pipe 5, providing a smooth channel for the circulation of the coolant.
[0038] The water inlet pipe 1 is connected to one of the outer branch pipe 3 and the inner branch pipe 4, and the water return pipe 2 is connected to the other of the outer branch pipe 3 and the inner branch pipe 4. Therefore, two coolant flow paths are formed: one is that the coolant enters the spot cooling structure from the water inlet pipe 1, flows through the outer branch pipe 3, the tail pipe 5, the inner branch pipe 4, and finally flows out of the spot cooling structure from the water return pipe 2; the other is that the coolant enters the spot cooling structure from the water inlet pipe 1, flows through the inner branch pipe 4, the tail pipe 5, the outer branch pipe 3, and finally flows out of the spot cooling structure from the water return pipe 2.
[0039] Compared with the traditional structure that relies on copper gaskets to achieve cooling, the spot cooling structure of the present application, by virtue of the direct contact between its tail pipe 5 and the mold to be cooled 6, not only omits additional assembly steps and material costs, but also improves the efficiency of heat transfer and extends the service life of the structure.
[0040] In one specific embodiment of the present application, one end of the tail pipe 5 is welded to the mold 6 to be cooled. This not only ensures the physical connection strength between the tail pipe 5 and the mold 6 to be cooled, but also forms a reliable sealing barrier through the tight fusion of the molten metal. The mold 6 to be cooled seals the nozzle at one end of the tail pipe 5, effectively preventing coolant from leaking through the tiny gap between the tail pipe 5 and the mold 6 to be cooled under high-pressure or high-temperature operating environments.
[0041] In one specific embodiment of the present application, a guide cone is provided at the end of one of the outer branch pipe 3 and the tail pipe 5, which exhibits a gradually converging shape. A tapered hole is provided at the other end of the outer branch pipe 3 and the tail pipe 5, the shape of which matches the guide cone. When the outer branch pipe 3 and the tail pipe 5 are connected, the guide cone is inserted along the inner wall of the tapered hole until the two are completely aligned. This not only ensures the tightness of the connection, but also greatly improves the stability and sealing of the connection through the complementary physical shapes, thereby effectively preventing leakage of cooling medium or other fluids at the connection.
[0042] In a specific embodiment of the present application, the spot cooling structure further includes a docking fastener 7, which is sleeved on one of the outer branch pipe 3 and the tail pipe 5 and threadedly connected to the other of the outer branch pipe 3 and the tail pipe 5. The docking fastener 7 can specifically be a nut. When a tightening torque is applied to the docking fastener 7, the docking fastener 7 is gradually tightened along the thread track until the outer branch pipe 3 and the tail pipe 5 are tightly pressed together. During this process, the contact surface between the outer branch pipe 3 and the tail pipe 5 becomes tighter due to the extrusion force, thereby effectively improving the stability and sealing of the connection.
[0043] In a specific embodiment of the present application, the water inlet pipe 1 and / or the water return pipe 2 extend in a circumferential direction, and the outer branch pipe 3, the inner branch pipe 4 and the plurality of tail pipes 5 are arranged along the circumferential direction to fit the shape of the hub, thereby cooling the hub more evenly.
[0044] In one embodiment of the present application, multiple water inlet pipes 1 and / or return pipes 2 are provided. The number of water inlet pipes 1 and / or return pipes 2 can be increased or decreased based on actual needs to accommodate different molds 6 to be cooled. Each water inlet pipe 1 and / or return pipe 2 extends along a circumference of varying radius, thereby making the spot cooling structure more compact. Arranging water inlet pipes 1 and / or return pipes 2 along circumferences of varying radius also increases the cooling area and improves cooling efficiency.
[0045] In a specific embodiment of the present application, the water inlet pipe 1 is arranged on the outside of the return pipe 2, the water inlet pipe 1 is connected to the outer branch pipe 3, and the return pipe 2 is connected to the inner branch pipe 4; or, the return pipe 2 is arranged on the outside of the water inlet pipe 1, the return pipe 2 is connected to the outer branch pipe 3, and the water inlet pipe 1 is connected to the inner branch pipe 4.
[0046] In a specific embodiment of the present application, the inner branch pipe 4 and the outer branch pipe 3 are coaxially arranged to ensure that a certain gap is maintained between the two, providing sufficient space for the circulation of the coolant and ensuring smooth circulation of the coolant.
[0047] The present application also provides a low-pressure casting device, which includes the spot cooling structure in the above embodiment, and therefore also has the advantages of the spot cooling structure in the above embodiment.
[0048] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.
Claims
1. A spot cooling structure, characterized in that: It includes a water inlet pipe (1), a water return pipe (2), an outer branch pipe (3), an inner branch pipe (4), and a plurality of tail pipes (5); The tail pipes (5) are arranged on the mold to be cooled (6) at intervals, and one end of the tail pipe (5) contacts the mold to be cooled (6); the outer branch pipe (3) is connected to the other end of the tail pipe (5); the inner branch pipe (4) is inserted into the outer branch pipe (3), and one end of the inner branch pipe (4) extends into the tail pipe (5); The water inlet pipe (1) is connected to one of the outer branch pipe (3) and the inner branch pipe (4), and the water return pipe (2) is connected to the other of the outer branch pipe (3) and the inner branch pipe (4).
2. The spot cooling structure according to claim 1, characterized in that: One end of the tail pipe (5) is welded to the mold to be cooled (6), and the mold to be cooled (6) is sealed at the pipe opening at one end of the tail pipe (5).
3. The spot cooling structure according to claim 1, characterized in that: A guide cone portion is provided at one end of the outer branch pipe (3) and the tail pipe (5), and a tapered hole is provided at the other end of the outer branch pipe (3) and the tail pipe (5). When the outer branch pipe (3) and the tail pipe (5) are docked, the guide cone portion cooperates with the tapered hole.
4. The spot cooling structure according to claim 1, characterized in that: It also includes a butt fastener (7), which is sleeved on one of the outer branch pipe (3) and the tail pipe (5) and is threadedly connected to the other of the outer branch pipe (3) and the tail pipe (5).
5. The spot cooling structure according to claim 1, characterized in that: The water inlet pipe (1) and / or the water return pipe (2) extend in a circumferential direction.
6. The spot cooling structure according to claim 1, characterized in that: There are multiple water inlet pipes (1) and / or water return pipes (2), and each water inlet pipe (1) and / or water return pipe (2) extends along a circumference of a different radius.
7. The spot cooling structure according to claim 1, characterized in that: The water inlet pipe (1) is sleeved on the outside of the water return pipe (2), the water inlet pipe (1) is connected to the outer branch pipe (3), and the water return pipe (2) is connected to the inner branch pipe (4); or the water return pipe (2) is sleeved on the outside of the water inlet pipe (1), the water return pipe (2) is connected to the outer branch pipe (3), and the water inlet pipe (1) is connected to the inner branch pipe (4).
8. The spot cooling structure according to claim 1, characterized in that: The inner branch pipe (4) and the outer branch pipe (3) are coaxially arranged.
9. A low pressure casting device, characterized in that: The method comprises the spot cooling structure according to any one of claims 1 to 8.