Automobile hub water cooling die

Abstract

The utility model relates to the technical field of hub dies, in particular to an automobile hub water cooling die. The utility model discloses an automobile hub water cooling die which comprises a die body, an annular groove with a downward opening and a heat insulation assembly arranged in the annular groove are arranged in the die body, and a cooling water channel used for cooling a hub is arranged in the heat insulation assembly. At least two heat insulation cavities and cavities in one-to-one correspondence with the heat insulation cavities are sequentially arranged above the annular groove in a communicating mode, and blocking strips used for blocking the cavities are arranged in the heat insulation cavities and used for isolating the cavities from the cooling water channel. The cooling device has the advantages that the cooling effect of the water cavity on the spoke can be weakened, and the cooling device is simultaneously suitable for an upper die and a lower die for hub production.

Description

Technical Field

[0001] The utility model relates to the technical field of wheel hub moulds, in particular to a water-cooling mould for an automobile wheel hub. Background Art

[0002] Chinese patent application number 202121211866.9 discloses a thermal insulation component for an aluminum alloy wheel hub water cavity mold, comprising a mold body, wherein a thermal insulation component is fixedly installed inside the mold body; the thermal insulation component comprises an insulation groove, an insulation rod and a sealing block. An insulation groove is opened inside the mold body, and the insulation groove is located on the left side inside the mold body. The insulation groove is cylindrical, and an insulation rod is movably installed inside the insulation groove. A sealing block is fixedly connected to the mold body. The thermal insulation component of the aluminum alloy wheel hub water cavity mold reduces the heat transfer rate through the characteristic that the thermal conductivity of air and insulation rods is lower than that of mold steel, thereby reducing the impact of high-intensity cooling in the heat dissipation water cavity on the entire spoke cavity surface.

[0003] In the above technical solution, the heat insulation grooves and heat insulation rods are arranged along the radial direction of the hub to weaken the cooling effect of the water cavity on the spokes. However, due to the actual arrangement of the holes of the water cavity in the hub and the space occupied, it is only suitable for cooling the spokes of the upper mold. The heat insulation grooves and heat insulation rods are arranged along the radial direction of the hub. When actually arranged, they can only be adapted to the spokes of the upper mold. In order to correspond to the actual size of the spokes, the heat insulation grooves arranged in the above manner need to be changed in the circumferential size of the hub. When applied to spokes with larger sizes, the heat insulation grooves and water cavities arranged in the above manner will have overlapping areas, which increases the difficulty of actual processing and cannot be adapted to spokes with larger sizes, the PCD soup mouth of the lower mold, and the spoke roots of the upper and lower molds. The scope of application is too limited. Utility Model Content

[0004] The utility model aims to provide a water-cooling mould for automobile wheel hubs which can reduce the cooling effect of a water cavity on wheel spokes and has a wide adaptability range.

[0005] To achieve the above-mentioned purpose, the utility model discloses a water-cooling mold for an automobile wheel hub, comprising a mold body, a downward-opening annular groove and a heat insulation component arranged in the annular groove, a cooling water channel for cooling the wheel hub provided in the heat insulation component, a heat insulation cavity and cavities corresponding to the heat insulation cavity are sequentially connected above the annular groove, at least two heat insulation cavities are provided, and a blocking strip for sealing the cavity is provided in the heat insulation cavity, and the blocking strip is used to isolate the cavity from the cooling water channel.

[0006] First, install the blocking strip in the insulation cavity so that the blocking strip seals the cavity, and then install the insulation component in the annular groove through interference fit. Mill threaded holes in the insulation component for connecting the water inlet pipe and the water outlet pipe respectively, and use the pipe threads of the water inlet pipe and the water outlet pipe to connect the water pipe to the cooling water channel to complete the installation. In this way, the characteristic that the thermal conductivity of the insulation cavity and the cavity is lower than that of the mold body is utilized to reduce the heat transfer speed and reduce the impact of high-intensity cooling in the cooling water channel on the spoke forming surface.

[0007] The present invention arranges a heat-insulating cavity and a cavity in sequence above the annular groove (i.e., on the side close to the hub), and arranges the cooling water channel in the heat-insulating component, thereby avoiding the actual space of the heat-insulating groove and the cavity from overlapping with the cooling water channel and the hole area of the mold body, thereby being suitable for cooling hubs with larger spokes, reducing the difficulty of actual processing, and being suitable for the PCD soup mouth of the lower mold and the spoke roots of the upper and lower molds, ensuring that both the upper mold and the lower mold used for hub production are applicable. The present invention has the advantages of being able to reduce the cooling effect of the water cavity on the spokes and being suitable for the upper mold and the lower mold used for hub production.

[0008] Preferably, the distance between the annular inner wall and the annular outer wall of the heat-insulating cavity is greater than the distance between the annular inner wall and the annular outer wall of the cavity, and the blocking strip is interference fit with the heat-insulating cavity.

[0009] The cavity is sealed by making the size of the blocking strip larger than the cavity, which can reduce costs compared to the installation method using a sealing ring while ensuring the isolation effect between the cavity and the cooling water channel.

[0010] Preferably, the thermal insulation assembly includes an annular inner plate and an annular cover plate, the annular inner plate is arranged in an annular groove, and the annular cover plate is fixed at the opening of the annular groove. The cooling water channel is an annular groove structure, and the opening of the annular groove structure faces the thermal insulation cavity and is arranged on the upper side of the annular inner plate.

[0011] Compared with the integrated design of the annular inner plate and the annular cover plate, the split design of the annular inner plate and the annular cover plate arranged on the outside can ensure that under the pressure of the cooling water being heated and converted into water vapor, even if the annular inner plate cracks, the annular cover plate can still perform secondary insulation to prevent cooling water leakage.

[0012] Preferably, the annular inner plate is provided with a chamfer on one side close to the bottom of the annular groove.

[0013] When the annular inner plate is installed in the annular groove through interference fit, the chamfer on the annular inner plate can reduce the difficulty of installation, and when the annular inner plate directly contacts the heated cooling water, the annular inner plate is slightly deformed by the heat, and the gap between the chamfer on the annular inner plate and the bottom wall of the annular groove can provide it with deformation space, preventing it from damaging the mold body.

[0014] Preferably, a keyway is provided on the annular side wall of the annular groove, and a positioning groove adapted to the keyway is provided on the annular inner plate. Positioning keys are provided in the keyway and the positioning groove. The positioning keys can prevent the annular inner plate and the annular cover plate from shifting, thereby preventing the annular inner plate from rotating.

[0015] Preferably, the annular cover plate is welded to the opening of the annular groove.

[0016] Compared with the threaded connection between the annular cover plate and the annular groove, the annular groove can be sealed more firmly to prevent cooling water leakage.

[0017] The utility model has the advantages of being able to reduce the cooling effect of the water cavity on the wheel spokes and being simultaneously suitable for the upper die and the lower die used for hub production. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0019] Figure 2 It is a schematic cross-sectional structural diagram of the present utility model.

[0020] Figure 3 for Figure 2 A magnified schematic diagram of the structure at point A.

[0021] Figure 4 This is a structural schematic diagram of the annular inner plate of the present utility model.

[0022] Figure 5 This is a structural schematic diagram of the annular cover plate of the present invention.

[0023] In the figure: 1. mold body; 2. cavity; 3. insulation cavity; 4. annular groove; 41. annular inner plate; 42. cooling water channel; 5. annular cover plate; 6. welding space; 7. keyway; 71. positioning groove; 72. keyway; 8. water inlet pipe; 9. water outlet pipe. DETAILED DESCRIPTION

[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0025] Depend on Figure 1 、 Figure 2As shown, this embodiment discloses a water-cooled mold for an automobile wheel hub, including a mold body 1, in which an annular groove 4 with an opening downward (i.e., away from the wheel hub) and a heat insulation component are provided. Above the annular groove 4 (i.e., close to the wheel hub), a heat insulation cavity 3 and cavities 2 corresponding to the heat insulation cavity 3 are sequentially connected, and at least two heat insulation cavities 3 are provided.

[0026] Depend on Figure 3 As shown, the heat insulation assembly includes an annular inner plate 41 arranged in the annular groove 4, an annular cover plate 5 arranged on the side of the annular inner plate 41 away from the blocking bar, and a cooling water channel 42 arranged on the upper side of the annular inner plate 41. The cooling water channel 42 is an annular groove structure opening to the heat insulation cavity. A blocking bar for sealing the cavity 2 is provided in the heat insulation cavity 3. The distance between the annular inner wall and the annular outer wall of the heat insulation cavity is 1 mm larger than the distance between the annular inner wall and the annular outer wall of the cavity 2. The blocking bar and the heat insulation cavity 3 have an interference fit, so that the blocking bar can isolate the cavity 2 and the cooling water channel 42.

[0027] Depend on Figure 4 As shown, the annular inner plate 41 is provided with a chamfer on one side close to the bottom wall of the annular groove 4. Figure 5 As shown, a welding space 6 for welding is provided on the side of the annular cover plate 5 away from the annular inner plate 41. The welding space 6 is used for welding with the annular inner wall and the annular outer wall of the annular groove 4 and facilitates the formation of the welding layer.

[0028] A key groove 7 is provided on the annular side wall of the annular groove 4 , and a positioning groove adapted to the key groove 7 is provided on the annular inner plate 41 . Positioning keys are provided in the key groove 7 and the positioning groove.

[0029] First, install the blocking strip in the heat-insulating cavity 3 so that the blocking strip seals the cavity 2. Then, install the annular inner plate 41 and the annular cover plate 5 into the annular groove 4 in sequence through interference fit, and make the annular cover plate 5 press against the annular inner plate 41. Mill out threaded holes in the annular inner plate 41 and the annular cover plate 5 for connecting the water inlet pipe 8 and the water outlet pipe 9 respectively. Then, use CNC to process the positioning groove 71 on the annular side wall of the annular groove 4 and the annular inner plate 41. At this time, Figure 5 As shown, since the annular cover plate 5 is welded and fixed first, a key channel 72 is processed on the annular cover plate 5 during CNC processing, and the positioning key is assembled into the keyway 7 and the positioning groove 71 through the key channel 72, thereby making the mold body 1 and the annular inner plate 41 key-connected, preventing the annular inner plate 41 and the annular cover plate 5 from shifting, and playing a role in stopping the annular inner plate 41 from rotating. The pipe threads of the water inlet pipe 8 and the water outlet pipe 9 are used to connect the water pipe with the cooling water channel 42 to prevent the water pressure from increasing due to temperature change, causing the water inlet pipe 8 and the water outlet pipe 9 to loosen, thereby ensuring the tight connection between the water inlet pipe 8, the water outlet pipe 9 and the annular inner plate 41, and finally fixing the annular cover plate 5 and the inner wall of the annular groove 4 through the welding layer to complete the installation.

Claims

1. A water-cooled mold for an automobile wheel hub, comprising a mold body, a downwardly opening annular groove provided in the mold body, and a heat insulation assembly provided in the annular groove, characterized in that: A cooling water channel for cooling the wheel hub is provided in the heat insulation component, and a heat insulation cavity and cavities corresponding to the heat insulation cavity are sequentially connected above the annular groove. There are at least two heat insulation cavities, and a blocking strip for sealing the cavity is provided in the heat insulation cavity. The blocking strip is used to isolate the cavity from the cooling water channel.

2. The automobile wheel hub water-cooling mold according to claim 1, characterized in that: The distance between the annular inner wall and the annular outer wall of the heat-insulating cavity is greater than the distance between the annular inner wall and the annular outer wall of the cavity, and the blocking strip is interference-fitted with the heat-insulating cavity.

3. The automobile wheel hub water-cooling mold according to claim 1 or 2, characterized in that: The thermal insulation assembly includes an annular inner plate and an annular cover plate. The annular inner plate is arranged in an annular groove. The annular cover plate is fixed at the opening of the annular groove. The cooling water channel is an annular groove structure. The opening of the annular groove structure faces the thermal insulation cavity and is arranged on the upper side of the annular inner plate.

4. The automobile wheel hub water-cooling mold according to claim 3, characterized in that: The annular inner plate is provided with a chamfer on one side close to the bottom of the annular groove.

5. The automobile wheel hub water-cooling mold according to claim 3, characterized in that: A key groove is provided on the annular side wall of the annular groove, a positioning groove adapted to the key groove is provided on the annular inner plate, and a positioning key is provided in the key groove and the positioning groove.

6. The automobile wheel hub water-cooling mold according to claim 3, characterized in that: The annular cover plate is welded to the opening of the annular groove.

Images