Casting die for spinning casting of automobile hub

Abstract

The utility model belongs to the technical field of electric vehicle parts, and particularly relates to a casting die of an automobile hub spinning casting, which comprises an upper die plate, a lower die plate, a side die plate and a bottom die plate, the side die plate is arranged between the upper die plate and the lower die plate, the bottom die plate is arranged on the lower surface of the lower die plate, the lower surface of the upper die plate is an upper shape die, and the upper surface of the lower die plate is a lower shape die. The inner surface of the side mold plate is a side shape mold, the center of the lower surface of the upper mold plate is provided with a sprue spreader, and the corresponding position of the lower mold plate is provided with a sprue gate; a first water cooling channel is arranged in the side template; an air cooling nozzle is arranged on the upper surface of the bottom template; an air inlet channel is arranged at the bottom of the bottom template; a second water cooling channel is arranged in the upper die plate. Circulating water is injected into the first water cooling channel and the second water cooling channel, the cooling speed of the side mold plate and the upper mold plate is increased, air is blown to the lower mold plate through the air cooling spray head on the bottom mold plate, the cooling speed of the lower mold plate is increased, the overall cooling speed of the mold is increased, the mold is rapidly cooled, rim shrinkage porosity is prevented, and the product percent of pass is increased.

Description

Technical Field

[0001] This utility model relates to the field of wheel hub processing technology, and in particular to a casting mold for automotive wheel hub spinning casting. Background Technology

[0002] Currently, most aluminum alloy wheel hubs are manufactured using spin casting. For example, utility model patent CN210254113U discloses a casting mold for aluminum alloy wheel hubs with a spoke sidewall groove structure. The mold mainly includes a lower mold, an upper mold, a side mold, an upper mold core, a flow divider cone, a sprue sleeve, a lower mold slider, and a guide pin. Its features are: the guide pin passes through the mounting hole of the lower mold slider and is fastened to the lower mold; the lower mold slider and the lower mold are in a beveled fit, and the lower mold slider can move obliquely upwards and downwards along the beveled surface of the lower mold under the guidance of the guide pin; the outer wall of the lower mold slider is machined with a raised structure conforming to the spoke sidewall groove structure; the upper end of the guide pin has a limiting step. When the mold is closed, the upper mold pushes the lower mold slider to move obliquely downwards under the guidance of the guide pin; when the mold is opened, the spoke sidewall groove structure of the wheel hub casting drives the lower mold slider to move obliquely upwards under the guidance of the guide pin. When it moves to a specified distance, the lower mold slider completely separates from the wheel hub casting. Its advantages are: the mold does not require modification of existing equipment, and the mold structure is simple and easy to implement.

[0003] However, in actual use, the wheel hub casting mold will produce very high temperatures, resulting in very high mold temperatures. The mold cools very slowly, resulting in low cooling efficiency, which affects product production and processing. It can also cause the wheel rim to shrink and loosen, leading to product scrap.

[0004] To address the aforementioned problems, this utility model document proposes a casting mold for spinning casting of automobile wheel hubs. Utility Model Content

[0005] This invention provides a casting mold for spinning casting of automobile wheel hubs, which improves the cooling speed of the mold and increases the product qualification rate.

[0006] This utility model provides the following technical solution:

[0007] A casting mold for spinning casting automotive wheel hubs is characterized by comprising an upper mold, a lower mold, side molds, and a bottom mold. The side molds are positioned between the upper and lower molds and located at the edge. The bottom mold is located on the lower surface of the lower mold. The lower surface of the upper mold is an upper mold that matches the wheel hub to be processed. The upper surface of the lower mold is a lower mold that matches the wheel hub to be processed. The inner surface of the side molds is a side mold that matches the wheel hub to be processed. A flow divider cone is provided at the center of the lower surface of the upper mold, and a pouring gate is provided at the corresponding position of the flow divider cone on the lower mold.

[0008] The side template is provided with a first water-cooling channel; the adjacent surfaces of the bottom template and the lower template are provided with air-cooling nozzles, the bottom template is provided with an air-cooling channel, and the bottom of the bottom template is provided with an air intake channel connected to the air-cooling channel; the upper template is provided with a second water-cooling channel.

[0009] Furthermore, an intermediate hub pressure plate is provided at the center of the lower surface of the upper template, and the flow divider cone is pressed against the upper template by the intermediate hub pressure plate.

[0010] Furthermore, the upper surface of the upper template is provided with upper mold feet.

[0011] Furthermore, the upper template is also provided with an ejection mechanism, which includes a ejector rod, a push plate, and a guide mechanism. The guide mechanism includes a guide post, on which a guide sleeve is fitted. The guide sleeve is embedded in the push plate. The push plate is arranged parallel above the upper template. One end of the ejector rod passes through the upper template, and the other end abuts against the push plate. The push plate has an installation hole in the middle.

[0012] Furthermore, one end of the guide post is fixedly mounted on the upper template, and the other end is provided with a limiting plate.

[0013] Furthermore, the outer side of the side template has an annular mounting groove, the top surface of the side template has a positioning hole, a positioning pin is provided in the positioning hole, one end of the positioning pin passes through the upper template and has a connecting hole, the mounting groove of the side template has a positioning plate corresponding to the positioning hole, the positioning plate is connected to the positioning pin by bolts; a pull plate is provided on the outer side wall of the side template, the pull plate is fixed to the side template by bolts.

[0014] Furthermore, the positioning pin is provided with a limiting plate in the middle, the limiting plate is located between the upper template and the side template, and the opening of the positioning hole is provided with a clearance slot that matches the limiting plate.

[0015] Furthermore, a limit slot is provided at the edge of the lower surface of the side template, and a positioning key is provided on the lower template at the position corresponding to the limit slot.

[0016] Furthermore, the upper and lower templates are vertically provided with lifting columns on their side walls, and the lifting columns are provided with an annular limiting groove in the middle.

[0017] Furthermore, a spring return rod is provided between the upper template and the push plate, and the spring return rod is vertically arranged.

[0018] In this invention, circulating water is injected into the first and second water-cooling channels to increase the cooling speed of the side and upper mold plates. Air is blown onto the lower mold plate through the air-cooling nozzles on the bottom mold plate to increase the cooling speed of the lower mold plate, thereby increasing the overall cooling speed of the mold. This allows the mold to cool down quickly, preventing rim shrinkage and improving the product qualification rate. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of a casting mold for a spinning casting of an automobile wheel hub, provided in an embodiment of the present invention.

[0020] Figure label:

[0021] 1. Upper mold plate; 2. Lower mold plate; 3. Bottom mold plate; 4. Side mold plate; 5. Guide pillar; 6. Guide sleeve; 7. Push plate; 8. Top rod; 9. Limiting plate; 10. First water-cooling channel; 11. Second water-cooling channel; 12. Air-cooling channel; 13. Air-cooling nozzle; 14. Air inlet channel; 15. Positioning pin; 16. Positioning plate; 17. Limiting plate; 18. Positioning hole; 19. Connecting hole; 20. Flow divider cone; 21. Pour port; 22. Intermediate hub pressure plate; 23. Upper mold foot; 24. Mounting groove; 25. Positioning key; 26. Spring return rod; 27. Lifting column; 28. Mounting hole. Detailed Implementation

[0022] The embodiments of the present invention will now be described with reference to the accompanying drawings.

[0023] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connection" and "installation" should be interpreted broadly. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. Furthermore, "connection" can be a direct connection or an indirect connection through an intermediate medium. "Fixed" means that the relative positional relationship remains unchanged after the connection. The directional terms mentioned in the embodiments of this utility model, such as "inner," "outer," "top," and "bottom," are only for reference to the directions in the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of this utility model, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0024] In this embodiment of the invention, 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 indicated technical features. Therefore, a feature defined with "first" and "second" may explicitly or implicitly include one or more of that feature.

[0025] In this embodiment of the utility model, "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0026] References to "one embodiment" or "some embodiments" as used in this specification mean that one or more embodiments of the present invention include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0027] Example:

[0028] Reference Figure 1 As shown, a casting mold for spinning casting of automobile wheel hubs is characterized by comprising an upper mold plate 1, a lower mold plate 2, a side mold plate 4, and a bottom mold plate 3. The side mold plate 4 is positioned between the upper mold plate 1 and the lower mold plate 2 and is located at the edge. The bottom mold plate 3 is located on the lower surface of the lower mold plate 2. The lower surface of the upper mold plate 1 is an upper mold that matches the wheel hub to be processed. The upper surface of the lower mold plate 2 is a lower mold that matches the wheel hub to be processed. The inner surface of the side mold plate 4 is a side mold that matches the wheel hub to be processed. A flow divider cone 20 is provided at the center of the lower surface of the upper mold plate 1, and a pouring gate 21 is opened at the corresponding position of the flow divider cone 20 on the lower mold plate 2.

[0029] The side template 4 is provided with a first water cooling channel 10; the bottom template 3 is provided with an air cooling channel 12, the adjacent surfaces of the bottom template 3 and the lower template 2 are provided with air cooling nozzles 13, the bottom of the bottom template 3 is provided with an air intake channel 14 connected to the air cooling channel 12; the upper template 1 is provided with a second water cooling channel 11.

[0030] The upper mold 1, lower mold 2, and side mold 4 are assembled to form the casting cavity of the wheel hub. Molten aluminum alloy is injected through the pouring port 21, and after being diverted by the flow divider cone 20, it enters the mold cavity to fill the wheel hub casting and complete the casting of the wheel hub. Circulating cooling water is injected into the first water cooling channel 10 and the second water cooling channel 11 to rapidly cool the temperature of the side mold 4 and the upper mold 1. Cooling gas is injected through the air intake channel 14 and then sprayed out from the air cooling nozzle 13. The cooling gas acts on the lower mold 2, which rapidly cools the temperature of the lower mold 2. This achieves a rapid reduction in the overall temperature of the mold, improves the cooling efficiency of the mold, effectively avoids rim shrinkage of the wheel hub casting, improves the product qualification rate, ensures product quality, and reduces production costs.

[0031] An intermediate hub pressure plate 22 is provided at the center of the lower surface of the upper template 1, and the flow divider cone 20 is pressed onto the upper template 1 by the intermediate hub pressure plate 22.

[0032] The intermediate hub pressure plate 22 is fixed to the upper template 1 by bolts. The intermediate hub pressure plate 22 presses the flow divider cone 20 tightly, which facilitates the installation of the flow divider cone 20.

[0033] The upper surface of the upper template 1 is provided with upper mold feet 23.

[0034] The upper template 1 is installed on the lower pressing mechanism. The upper mold feet 23 abut against the surface of the lower pressing mechanism to position and support the upper template 1, making it easy to fix the upper template 1.

[0035] The upper template 1 is also provided with an ejection mechanism, which includes an ejector rod 8, a push plate 7 and a guide mechanism. The guide mechanism includes a guide post 5, a guide sleeve 6 is sleeved on the guide post 5, the guide sleeve 6 is embedded on the push plate 7, the push plate 7 is arranged parallel above the upper template 1, one end of the ejector rod 8 passes through the upper template 1, and the other end abuts against the push plate 7. The push plate 7 has an installation hole 28 in the middle.

[0036] The downward pressure of the push plate 7 can drive the push rod 8 to move downward. The push rod 8 passes through the upper template 1, causing the push rod 8 to push out of the upper template 1, thereby pushing the formed wheel hub casting out of the upper template 1 and separating the wheel hub casting from the upper template 1. The guide sleeve 6 is set on the push plate 7. When the push plate 7 moves downward, the guide sleeve 6 moves together with the guide post 5. The guide sleeve 6 moves in conjunction with the guide post 5. The movement direction of the push plate 7 is stabilized by the cooperation of the guide sleeve 6 and the guide post 5, thereby ensuring the stability of the movement direction of the push rod 8.

[0037] The push plate 7 is connected to the external pressing mechanism through the mounting hole 28. The pressing mechanism drives the push plate 7 to move downward, thereby enabling the push plate 7 to drive the push rod 8 to move downward.

[0038] One end of the guide post 5 is fixedly mounted on the upper template 1, and the other end is provided with a limiting plate 9.

[0039] The limiting plate 9 prevents the guide sleeve 6 from falling off the guide post 5, thereby ensuring the structural stability of the push plate 7.

[0040] The outer side of the side template 4 has an annular mounting groove 24, and the top surface of the side template has a positioning hole 18. A positioning pin 15 is provided in the positioning hole 18. One end of the positioning pin 15 passes through the upper template 1 and has a connecting hole 19. A positioning plate 16 is provided in the mounting groove 24 of the side template 4 corresponding to the position of the positioning hole 18. The positioning plate 16 is connected to the positioning pin 15 by bolts. A pull plate is provided on the outer side wall of the side template 4. The pull plate is fixed to the side template 4 by bolts.

[0041] The mounting slot 24 facilitates the installation of the positioning pin 15 on the side template 4. The positioning plate 16 is connected to the positioning pin 15 by bolts, and the positioning plate 16 prevents the positioning pin 15 from being pulled out of the positioning hole 18. The connecting hole 19 facilitates the connection of the external connecting mechanism to the positioning pin 15.

[0042] The positioning pin 15 facilitates positioning when the upper template 1 and the lower template 2 are spliced, and at the same time prevents the upper template 1 and the lower template 2 from deflecting, thus ensuring the quality of the internal hub casting.

[0043] The positioning pin 15 has a limiting plate 17 in the middle, which is located between the upper template 1 and the side template 4. The opening of the positioning hole 18 has a clearance slot that matches the limiting plate 17.

[0044] The limiting plate 17 is positioned between the upper template 1 and the lower template 2. After the upper template 1 and the lower template 2 are spliced, the upper template 1 and the lower template 2 can be lifted together by lifting the positioning pin 15 through the connecting block. The clearance slot set at the opening of the positioning hole 18 makes it easy for the limiting plate 17 to not affect the fit of the upper template 1 and the lower template 2 when splicing, ensuring that the upper template 1 and the lower template 2 fit tightly.

[0045] A limit slot is provided at the edge of the lower surface of the side template 4, and a positioning key 25 is provided on the lower template 2 at the position corresponding to the limit slot.

[0046] After the side template 4 is spliced ​​with the upper template 1 and the lower template 2, the limiting buckle is pressed against the positioning key 25 to prevent the side template 4 from falling off and to improve the overall structural stability.

[0047] The upper template 1 and the lower template 2 are vertically provided with lifting columns 27 on their side walls, and the middle of the lifting column 27 is provided with an annular limiting groove.

[0048] The lifting column 27 facilitates the hoisting of the mold by the lifting device. The upper mold plate 1 or the lower mold plate 2 can also be hoisted separately. During assembly, the upper mold plate 1 needs to be hoisted for installation, and after assembly, the mold needs to be transported to the production location. The lifting column 27 facilitates mold movement.

[0049] A spring return rod 26 is also provided between the upper template 1 and the push plate 7, and the spring return rod 26 is set vertically.

[0050] The spring return rod 26 causes the push plate 7 to spring back up after being pressed down, facilitating subsequent operations.

[0051] Place the side template 4 on the lower template 2 row. The limiting slot on the side template 4 abuts against the positioning key 25 of the lower template 2. Lift the upper template 1 by the lifting column 27, align the upper template 1 with the lower template 2, and then install bolts through the mounting slot 24 of the side template 4 to connect the side template 4 with the lower template 2. The positioning pin 15 passes through the positioning hole 18 and is fixed by the positioning plate 16 and bolts to complete the assembly of the mold.

[0052] In use, the mold is lifted and moved to the processing position using a lifting device via the lifting column 27. The upper mold plate 1 is placed against the lower pressing mechanism, and the push plate 7 is connected to the lower pressing position of the lower pressing mechanism through the mounting hole 28. Molten aluminum alloy is injected through the pouring port 21, and after being diverted by the flow divider cone 20, it enters the mold cavity to fill the wheel hub casting and complete the wheel hub casting. Circulating cooling water is injected into the first water cooling channel 10 and the second water cooling channel 11 to rapidly cool the side mold plate 4 and the upper mold plate 1. Cooling gas is injected through the air intake channel 14 and then sprayed out from the air cooling nozzle 13. The cooling gas acts on the lower mold plate 2, rapidly cooling its temperature. This results in a rapid decrease in the overall temperature of the mold, and also makes it easier for the wheel hub casting to solidify sequentially during the casting process, resulting in more stable product quality, preventing rim shrinkage, improving the quality of the wheel hub casting, and thus improving the quality of the wheel hub product.

[0053] After casting is completed, the pressing mechanism drives the push plate 7 to move downward, and the push plate 7 pushes the push rod 8 to move downward, so that the push rod 8 pushes out of the upper template 1, thereby pushing the wheel hub casting out of the upper template 1, separating the wheel hub casting from the upper template 1, making it easier to remove the wheel hub casting.

[0054] The side template 4 and upper template 1 of this utility model have a large thickness and are rapidly cooled by water cooling, while the lower template 2 has a small thickness and is rapidly cooled by air cooling. This allows for rapid cooling of the mold, improves the cooling efficiency of the mold, reduces the shrinkage and porosity scrap rate of wheel hub castings, increases the product qualification rate, reduces production costs, and is suitable for widespread application.

[0055] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. In the absence of conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A casting mold for a spinning casting of an automobile wheel hub, characterized in that, It includes an upper template, a lower template, side templates, and a bottom template. The side template is positioned between the upper and lower templates and is located at the edge. The bottom template is located on the lower surface of the lower template. The lower surface of the upper template is an upper mold that matches the wheel hub to be processed. The upper surface of the lower template is a lower mold that matches the wheel hub to be processed. The inner surface of the side template is a side mold that matches the wheel hub to be processed. A flow divider cone is provided at the center of the lower surface of the upper template, and a pouring gate is provided at the corresponding position of the flow divider cone on the lower template. The side template is provided with a first water-cooling channel; the bottom template is provided with an air-cooling channel, and an air-cooling nozzle is provided on the side adjacent to the lower template; the bottom of the bottom template is provided with an air inlet channel connected to the air-cooling channel; the upper template is provided with a second water-cooling channel.

2. The casting mold for a spinning casting of an automobile wheel hub according to claim 1, characterized in that, An intermediate hub pressure plate is provided at the center of the lower surface of the upper template, and the flow divider cone is pressed against the upper template by the intermediate hub pressure plate.

3. The casting mold for a spinning casting of an automobile wheel hub according to claim 1, characterized in that, The upper surface of the upper template is provided with upper mold feet.

4. The casting mold for a spinning casting of an automobile wheel hub according to claim 1, characterized in that, The upper template is also provided with an ejection mechanism, which includes a push rod, a push plate and a guide mechanism. The guide mechanism includes a guide post, on which a guide sleeve is fitted. The guide sleeve is embedded in the push plate. The push plate is arranged parallel above the upper template. One end of the push rod passes through the upper template and the other end abuts against the push plate. The push plate has a mounting hole in the middle.

5. The casting mold for a spinning casting of an automobile wheel hub according to claim 4, characterized in that, One end of the guide post is fixedly mounted on the upper template, and the other end is provided with a limiting plate.

6. The casting mold for a spinning casting of an automobile wheel hub according to claim 1, characterized in that, The outer side of the side template has an annular mounting groove, and the top surface of the side template has a positioning hole. A positioning pin is provided in the positioning hole. One end of the positioning pin passes through the upper template and has a connecting hole. A positioning plate is provided in the mounting groove of the side template corresponding to the positioning hole. The positioning plate is connected to the positioning pin by bolts. A pull plate is provided on the outer side wall of the side template. The pull plate is fixed to the side template by bolts.

7. The casting mold for a spinning casting of an automobile wheel hub according to claim 6, characterized in that, The positioning pin has a limiting plate in the middle, which is located between the upper template and the side template. The opening of the positioning hole has a clearance slot that matches the limiting plate.

8. The casting mold for a spinning casting of an automobile wheel hub according to claim 7, characterized in that, A limit slot is provided at the edge of the lower surface of the side template, and a positioning key is provided on the lower template at the position corresponding to the limit slot.

9. The casting mold for a spinning casting of an automobile wheel hub according to claim 1, characterized in that, The upper and lower templates are vertically equipped with lifting columns on their side walls, and the lifting columns are provided with annular limiting grooves in the middle.

10. The casting mold for a spinning casting of an automobile wheel hub according to claim 4, characterized in that, A spring return rod is also provided between the upper template and the push plate, and the spring return rod is set vertically.

Images