Cooling module for cooling a wheel rim of a wheel hub mold and low-pressure casting wheel hub mold

Abstract

The application discloses a cooling module for cooling a wheel rim of a wheel hub mold and a low-pressure casting wheel hub mold; the cooling module comprises a heat dissipation base, transverse heat dissipation pipes and heat dissipation fins, the heat dissipation base and the heat dissipation fins are fastened and connected through bolts, a plurality of semicircular grooves with matched sizes are horizontally arranged on one side of the heat dissipation base and the heat dissipation fins, corresponding semicircular grooves are spliced to form transverse round holes, and the transverse round holes are used for mounting the transverse heat dissipation pipes; the cooling module is made of brass, and is matched with aluminum heat dissipation fins; the heat conductivity of copper and the heat dissipation property of aluminum are combined to realize optimization of cooling performance; the structure size can be used in the same size wheel hub mold, and the manufacturing cost is reduced; through the setting of the driving device, the connecting plate and the sliding top plate can be driven to slide upwards synchronously after the upper mold slides for a distance, and then the ejection rod is used to complete demolding, so that an additional demolding tool is not needed, and the use is more convenient.

Description

Technical Field

[0001] This utility model relates to the field of low-pressure casting metal molds, and in particular to a cooling module for cooling the rim of a wheel hub mold and a low-pressure casting wheel hub mold. Background Technology

[0002] A wheel hub is a cylindrical metal component mounted on an axle, supporting the tire's inner contour. It is also called a wheel rim, steel rim, wheel, or tire rim. Wheel hubs come in many varieties depending on their diameter, width, forming method, and material. Wheel hubs are manufactured using molds. The processing of wheel hubs primarily relies on casting, which involves the use of molds. Molds are generally of a split structure, including an upper mold, a bottom mold, and multiple side molds. Together, they form a wheel hub cavity. Specifically, the upper mold's main function is to form the back cavity surface of the wheel hub, the bottom mold forms the front surface, and the side molds form the rim surface. The importance of the mold is self-evident. It is not only a key piece of equipment for forming but also acts as a heat exchanger. During the casting process, the heat exchange between the mold and the molten metal is extremely close. The uniformity and stability of the temperature field distribution within the mold directly affect the quality of the casting, the mold's lifespan, and production efficiency.

[0003] For example, Chinese utility model CN219703467U discloses a cooling structure for a side mold insert in a low-pressure casting wheel hub mold. This structure uses radially opened cooling channels, allowing the cooling channels to be manufactured using ordinary drilling processes. This simplifies the process and facilitates manufacturing, overcoming the drawbacks of traditional circumferentially arranged arc-shaped cooling channels, which are complex, time-consuming, and costly to manufacture. Simultaneously, the radially arranged cooling channels allow cooling water to directly and precisely cool areas requiring forced cooling, eliminating the need for additional heat insulation structures for areas not requiring forced cooling, as is required with traditional arc-shaped cooling channels. This simplifies the cooling structure and improves cooling efficiency. The uniform water distribution structure ensures uniform cooling of the wheel hub casting, improving casting quality. However, this structure still has several significant drawbacks: 1. The current cooling structure involves drilling holes at the locations in the mold that require cooling and connecting inlet and outlet water pipes at both ends of the holes to form a water channel. This structure is only applicable to the current wheel hub mold and cannot be reused for other wheel hub molds, resulting in poor versatility.

[0004] 2. The existing mold frame does not have a function to eject the workpiece. After the workpiece is formed, it needs to be manually removed from the die cavity, which is laborious and inconvenient. Summary of the Invention

[0005] This utility model aims to solve one of the technical problems existing in the prior art.

[0006] This application provides a cooling module for cooling the rim of a wheel hub mold; including a heat dissipation base, a horizontal heat dissipation pipe and heat dissipation fins. The heat dissipation base and the heat dissipation fins are fastened together by bolts. On the side of the heat dissipation base that contacts the heat dissipation fins, several semi-circular grooves of matching positions and sizes are opened laterally. The corresponding semi-circular grooves are spliced ​​together to form a horizontal circular hole, which is used to install the horizontal heat dissipation pipe.

[0007] Furthermore, the heat dissipation base includes a first heat dissipation block, a second heat dissipation block, and a longitudinal heat dissipation pipe. The side of the first heat dissipation block that contacts the heat dissipation fins has a longitudinal mounting groove that matches the size of the second heat dissipation block. The second heat dissipation block is slidably installed in the mounting groove. The sides of the first and second heat dissipation blocks that contact each other have several longitudinally opened semi-circular grooves that match the position and size. The corresponding semi-circular grooves are spliced ​​together to form a longitudinal circular hole, which is used to install the longitudinal heat dissipation pipe. Among them, the No. 1 heat sink and the No. 2 heat sink have a semi-circular groove horizontally opened on the side of the heat sink fins.

[0008] Furthermore, the inner diameters of the horizontal and vertical circular holes are matched with the diameters of the horizontal and vertical heat dissipation pipes, respectively, and the number of each is even.

[0009] Furthermore, both heat sink #1 and heat sink #2, as well as the horizontal and vertical heat pipes, are made of brass.

[0010] Furthermore, heat dissipation fins are aluminum profile components that can be customized through extrusion processes.

[0011] Furthermore, the side of the No. 1 heat sink facing away from the heat sink fins has an arc surface that matches the inner peripheral wall of the upper mold, and can be fixed to the inner peripheral wall of the upper mold with bolts.

[0012] This invention also provides a low-pressure casting wheel hub mold, including a bottom mold, a side mold, an upper mold, and a mold frame, and further includes a cooling module for cooling the wheel rim of the wheel hub mold as described in any of the above technical solutions. The mold frame is provided with an installation cavity, and a sliding top plate is slidably installed in the installation cavity. Several ejector rods are fixedly installed on the top of the sliding top plate, and the ejector rods are all slidably connected to the bottom mold. A driving device is provided in the installation cavity, and the driving device can drive the sliding top plate to slide synchronously after the upper mold slides upward a certain distance.

[0013] Furthermore, the driving device includes an I-shaped block and a connecting block. One end of the connecting block is fixedly connected to the sliding top plate, and the other end is provided with a connecting hole that slides with the I-shaped block. The I-shaped block is fixedly installed on the outer wall of the upper mold.

[0014] The beneficial effects of this utility model are as follows: 1. By using brass heat sinks (No. 1 and No. 2), horizontal and vertical heat pipes, and aluminum heat sink fins, the thermal conductivity of copper and the heat dissipation properties of aluminum are fully combined to achieve superior cooling performance. Furthermore, this cooling structure can be interchanged in wheel hub molds of the same size, reducing mold manufacturing costs; 2. With the setting of the driving device, after the upper mold slides upward a certain distance, it can drive the connecting plate and the sliding top plate to slide upward synchronously, and then eject the forming hub through the ejector rod to complete the demolding. No additional demolding tools are required, making it more convenient to use. Attached Figure Description

[0015] Figure 1 This is an exploded structural diagram of the bottom mold, side mold, upper mold, and cooling module in an embodiment of this application; Figure 2 This is an exploded structural diagram of the cooling module in an embodiment of this application; Figure 3 This is a schematic diagram of the overall assembly of the cooling module in an embodiment of this application; Figure 4 This is a schematic diagram of the assembly of heat sink No. 1, heat sink No. 2, and vertical heat pipe in an embodiment of this application; Figure 5 This is a schematic diagram of the assembly of the heat dissipation fins and the horizontal heat dissipation pipes in an embodiment of this application; Figure 6 This is a schematic diagram of the structure of the mold frame, sliding top plate, ejector rod and driving device in the embodiments of this application.

[0016] Figure Labels 1-Bottom mold, 2-Side mold, 3-Upper mold, 41-Heat dissipation base, 411-Heat dissipation block No. 1, 412-Heat dissipation block No. 2, 413-Longitudinal heat dissipation pipe, 414-Mounting groove, 415-Longitudinal round hole, 42-Transverse heat dissipation pipe, 43-Heat dissipation fins, 44-Transverse round hole, 5-Mold frame, 51-Mounting cavity, 52-Sliding top plate, 53-Ejection rod, 54-Drive device, 541-I-shaped block, 542-Connecting block, 543-Connecting hole. Detailed Implementation

[0017] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0018] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0019] The following description, in conjunction with the accompanying drawings, details a cooling module for cooling wheel rims in a wheel hub mold, provided by this application, through specific embodiments and application scenarios.

[0020] Example 1: like Figures 1 to 5 As shown, this application embodiment provides a cooling module for cooling the rim of a wheel hub mold; it includes a heat dissipation base 41, a horizontal heat dissipation pipe and heat dissipation fins 43. The heat dissipation base 41 and the heat dissipation fins 43 are fastened together by bolts. On the side of the heat dissipation base 41 that contacts the heat dissipation fins 43, several semi-circular grooves of matching positions and sizes are opened laterally. The corresponding semi-circular grooves are spliced ​​together to form a horizontal circular hole 44. The horizontal circular hole 44 is used to install the horizontal heat dissipation pipe 42.

[0021] Furthermore, the heat dissipation base 41 includes a first heat dissipation block 411, a second heat dissipation block 412, and a longitudinal heat dissipation pipe 413. The side of the first heat dissipation block 411 that contacts the heat dissipation fins 43 is provided with a longitudinal mounting groove 414 that matches the size of the second heat dissipation block 412. The second heat dissipation block 412 is slidably installed in the mounting groove 414. The sides of the first heat dissipation block 411 and the second heat dissipation block 412 that contact each other are provided with a number of semi-circular grooves that match the position and size. The corresponding semi-circular grooves are spliced ​​together to form a longitudinal circular hole 415, which is used to install the longitudinal heat dissipation pipe 413. The side of the first heat dissipation block 411 and the second heat dissipation block 412 that contacts the heat dissipation fins 41 is provided with a transverse semi-circular groove.

[0022] Furthermore, the inner diameters of the transverse circular holes 44 and the longitudinal circular holes 415 are matched with the diameters of the transverse heat dissipation pipes 42 and the longitudinal heat dissipation pipes 413, respectively, and the number of each is even.

[0023] Furthermore, heat sink 411, heat sink 412, horizontal heat pipe 42 and vertical heat pipe 413 are all made of brass.

[0024] Furthermore, the heat dissipation fins 43 are aluminum profile components that can be customized through an extrusion process.

[0025] Furthermore, the side of the first heat sink 411 facing away from the heat sink fins 43 is an arc surface that matches the inner peripheral wall of the upper mold 3, and can be fixed to the inner peripheral wall of the upper mold 3 by bolts.

[0026] In this embodiment of the application, due to the above-mentioned structure, a number of semi-circular grooves with matching positions and sizes are longitudinally opened on the side where the first heat sink 411 and the second heat sink 412 are in contact, and these semi-circular grooves are circumferentially distributed at equal intervals. The corresponding semi-circular grooves are spliced ​​together to form a longitudinal circular hole 415, and the longitudinal circular hole 415 is interference-fitted with the longitudinal heat sink 413. When the upper and lower end faces of heat sink 411 and heat sink 412 are flush, the semi-circular grooves opened laterally on heat sink 411 and heat sink 412 are aligned one by one. On the side of heat sink 43 that contacts heat sink 411 and heat sink 412, several semi-circular grooves are opened laterally at equal intervals. The semi-circular grooves on heat sink 411 and heat sink 412 are matched in position and size with the semi-circular grooves on heat sink 43. The corresponding semi-circular grooves are spliced ​​together to form a horizontal circular hole 44. The horizontal circular hole 44 is interference-fitted with the horizontal heat sink 42. The heat dissipation fins 43 and the first heat dissipation block 411 can be fastened together by bolts. The second heat dissipation block 412 is embedded between the heat dissipation fins 43 and the first heat dissipation block 411 under the lateral limit of the mounting groove 414 and the longitudinal limit of the lateral heat dissipation pipe 42, without the need for additional bolts for fixing. The number of horizontal circular holes 44 and vertical circular holes 415 are both even, which can ensure that the inlet and outlet positions of the horizontal heat dissipation pipe 42 and the vertical heat dissipation pipe 413 are adjacent, which facilitates the centralized arrangement of pipe interfaces, reduces pipe cross interference, and improves the installation efficiency and space utilization of the cooling system. The No. 1 heat sink 411, the No. 2 heat sink 412, the horizontal heat pipe 42 and the vertical heat pipe 413 are all made of brass. Brass has high thermal conductivity, which can quickly transfer heat to the cooling medium in the heat sink base 41, the horizontal heat pipe 42 and the vertical heat pipe 413. The heat dissipation fins 43 are aluminum profile components that can be customized through extrusion. Aluminum has good heat dissipation capabilities and can quickly dissipate heat. The side of the No. 1 heat sink 411 facing away from the heat sink fins 43 is an arc surface that matches the inner peripheral wall of the upper mold 3, so that there will be no gap when it is fixed to the inner peripheral wall of the upper mold 3 by bolts, thereby ensuring heat dissipation efficiency. The diameters of the longitudinal heat pipe 413 and the transverse heat pipe 42 are determined according to the heat dissipation rate required for production. The bending radius of the longitudinal heat pipe 413 can be determined according to the central axis spacing of the longitudinal circular hole 415, and the bending radius of the transverse heat pipe 42 can be determined according to the central axis spacing of the transverse circular hole 44.

[0027] Example 2: like Figure 6 As shown, in this embodiment, in addition to the structural features of the aforementioned embodiments, it also includes a mold frame 5, a mounting cavity 51 is provided inside the mold frame 5, and a sliding top plate 52 is slidably mounted inside the mounting cavity 51. Several ejector rods 53 are fixedly installed at the top of mold 52. All ejector rods 53 are slidably connected to the bottom mold 1, and the installation cavity is... 51 is equipped with a driving device 54, which can drive the sliding top plate 52 to slide synchronously after the upper mold 3 slides upward a certain distance.

[0028] Furthermore, the driving device 54 includes an I-shaped block 541 and a connecting block 542. One end of the connecting block 542 is fixedly connected to the sliding top plate 52, and the other end is provided with a connecting hole 543 that slides with the I-shaped block 541. The I-shaped block 541 is fixedly installed on the outer wall of the upper mold 3.

[0029] In this embodiment of the application, due to the above-mentioned structure, the bottom mold 1 is provided with an ejection hole that slides with the ejector rod 53. The mold frame 5 is fixedly connected to the bottom mold 1, the guide post is fixedly installed on the mold frame 5, and the guide sleeve is fixedly installed on the upper mold 3. The guide post and the guide sleeve slide with each other. The cylinder can push the upper mold 3 to slide down along the guide post, thereby closing the mold. After the wheel hub is cooled and formed, the cylinder can drive the upper mold 3 to slide up along the guide post until the connecting block 542 contacts the lower end of the I-shaped block 541. The upward sliding of the upper mold 3 can drive the connecting block 542 and the sliding top plate 52 to slide up. The upward sliding of the sliding top plate 52 drives the ejector rod 53 to slide up, ejecting the formed wheel hub and completing the demolding. This makes it convenient for the workers to take out the wheel hub. After the wheel hub is taken out, the cylinder pushes the upper mold 3 to slide down a certain distance, so that the sliding top plate 52 is reset.

[0030] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0031] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A cooling module for cooling the rim of a wheel hub mold, characterized in that, It includes a heat dissipation base, horizontal heat dissipation pipes and heat dissipation fins. The heat dissipation base and heat dissipation fins are fastened together by bolts. On the side of the heat dissipation base that contacts the heat dissipation fins, there are several horizontally opened semi-circular grooves of matching positions and sizes. The corresponding semi-circular grooves are spliced ​​together to form a horizontal circular hole, which is used to install the horizontal heat dissipation pipes.

2. The cooling module for cooling the rim of a wheel hub mold according to claim 1, characterized in that, The heat dissipation base includes a first heat dissipation block, a second heat dissipation block, and a longitudinal heat dissipation pipe. The side of the first heat dissipation block that contacts the heat dissipation fins has a longitudinal mounting groove that matches the size of the second heat dissipation block. The second heat dissipation block is slidably installed in the mounting groove. The sides of the first and second heat dissipation blocks that contact each other have several longitudinally opened semi-circular grooves that match the size and position. The corresponding semi-circular grooves are spliced ​​together to form a longitudinal circular hole, which is used to install the longitudinal heat dissipation pipe. Among them, the No. 1 heat sink and the No. 2 heat sink have a semi-circular groove horizontally opened on the side of the heat sink fins.

3. The cooling module for cooling the rim of a wheel hub mold according to claim 2, characterized in that, The inner diameters of the horizontal and vertical circular holes match the diameters of the horizontal and vertical heat dissipation pipes, respectively, and the number of each hole is even.

4. The cooling module for cooling the rim of a wheel hub mold according to claim 2, characterized in that, Heat sink No. 1, heat sink No. 2, horizontal heat pipes and vertical heat pipes are all made of brass.

5. A cooling module for cooling the rim of a wheel hub mold according to claim 1, characterized in that, Heat sink fins are aluminum profile components that can be customized through extrusion processes.

6. A cooling module for cooling the rim of a wheel hub mold according to claim 2, characterized in that, The side of the No. 1 heat sink facing away from the heat sink fins has an arc surface that matches the inner peripheral wall of the upper mold, and can be fixed to the inner peripheral wall of the upper mold with bolts.

7. A low-pressure casting wheel hub mold, comprising a bottom mold, side molds, an upper mold, and a mold frame, characterized in that, It also includes a cooling module for cooling the rim of the wheel hub mold as described in any one of claims 1 to 6. The mold frame is provided with an installation cavity, and a sliding top plate is slidably installed in the installation cavity. A plurality of ejector rods are fixedly installed on the top of the sliding top plate. The ejector rods are all slidably connected to the bottom mold. A driving device is provided in the installation cavity. The driving device can drive the sliding top plate to slide synchronously after the upper mold slides upward a certain distance.

8. A low-pressure casting wheel hub mold according to claim 7, characterized in that, The driving device includes an I-shaped block and a connecting block. One end of the connecting block is fixedly connected to the sliding top plate, and the other end is provided with a connecting hole that slides with the I-shaped block. The I-shaped block is fixedly installed on the outer wall of the upper mold.

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