Die for reducing weight of hub blank

Abstract

The utility model discloses a wheel hub blank weight reducing die which comprises a mounting plate, a lower die core arranged on the upper portion of the mounting plate, a sprue spreader arranged in the middle of the lower die core, an upper die core arranged above the lower die core, a plurality of side dies arranged on the periphery of the lower die core on the mounting plate, and a central riser arranged in the middle of the upper portion of the upper die core. A riser ring is arranged on the periphery of the upper portion of the upper die core, a plurality of open risers and blind risers are formed in the periphery of the riser ring, and the open risers and the blind risers are alternately arranged. According to the utility model, the residual metal amount on the blank can be reduced, so that the weight of the blank is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, and more specifically to a mold for reducing the weight of a hub blank. Background Art

[0002] As large displacement and wide rim products are becoming more and more popular in the motorcycle market, in conventional molds, several risers are opened on the riser ring, and the metal liquid in the riser is used to feed the shrinkage. There will be a surplus of these metal liquids, resulting in a large amount of excess metal remaining on the generated blank. These metals need to be removed in subsequent processing. Excessive metal residues will lead to an increase in the amount of aluminum foam. With the increasing energy costs today, the smelting cost of aluminum foam and other recycled materials is also rising sharply, leading to increased costs. Utility Model Content

[0003] The utility model aims to overcome the deficiencies of the prior art and provide a wheel hub blank weight-reducing die.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] The utility model discloses a wheel hub blank weight reduction mold, comprising a mounting plate, a lower mold core is arranged on the upper part of the mounting plate, a diverter cone is arranged at the middle position of the lower mold core, an upper mold core is arranged above the lower mold core, a plurality of side molds are arranged at the position of the outer periphery of the lower mold core on the mounting plate, a central riser is arranged at the middle position of the upper part of the upper mold core, a riser ring is arranged at the outer periphery position of the upper part of the upper mold core, a plurality of open risers and dark risers are opened at the outer periphery of the riser ring, the open risers and the dark risers are arranged alternately, the lower ends of the open risers and the dark risers are connected with the lower end face of the riser ring, the upper ends of the open risers penetrate the upper end face of the riser ring, and the upper ends of the dark risers do not penetrate the upper end face of the riser ring.

[0006] Furthermore, a through hole is provided on the riser ring above the blind riser, and a vent plug is provided in the through hole.

[0007] Furthermore, the visible risers and the hidden risers are evenly distributed around the outer circumference of the riser ring.

[0008] Furthermore, a cooling ring is arranged at the upper part of the upper mold core at the outer periphery of the central riser, and a cooling pipe is arranged on the cooling ring, and a lower end of the cooling pipe is inserted into the cooling ring.

[0009] Furthermore, a base plate is provided below the mounting plate, a support column is connected to the upper part of the base plate, a guide column is connected to the upper end of the support column, the upper end of the guide column is connected to the bottom surface of the mounting plate, a second fixed plate and a push plate are provided above the base plate, guide sleeves are provided in the second fixed plate and the push plate, the guide column passes through the guide sleeve, a number of ejector rods are connected to the second fixed plate, and an ejection connecting head is provided at the lower part of the push plate.

[0010] The beneficial effects of the utility model are as follows: the open riser is aligned above the intersection of the spoke and the rim, and the blind riser is located above the non-intersection position; the intersection of the spoke and the rim is a heat node, and the open riser can be provided to effectively compensate for shrinkage; there is no obvious heat node at the non-intersection position, and a blind riser can be provided to compensate for shrinkage of the rim and the rim end face; the molten metal in the blind riser is less than that in the open riser, so the weight of the blank obtained by casting can be effectively reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 A schematic structural diagram of a die for reducing the weight of a wheel hub blank in this embodiment;

[0012] Figure 2 A schematic diagram of the structure of the riser ring in this embodiment;

[0013] Figure 3 is a bottom view of the riser ring in this embodiment;

[0014] Figure 4 This is a schematic diagram of the structure of the product cast in this embodiment.

[0015] Figure numerals: 1. mounting plate; 2. fixing plate 1; 3. diverter cone; 4. lower mold core; 5. upper mold core; 6. side mold; 7. exhaust plug; 8. center riser; 9. riser pressure plate; 10. riser ring; 11. cooling pipe 1; 12. cooling pipe 2; 13. cooling branch pipe; 14. ejector rod; 15. fixing plate 2; 16. push plate; 17. bottom plate; 18. support column; 19. guide column; 20. guide sleeve; 21. visible riser; 22. concealed riser; 23. cooling ring; 24. ejector connector; 25. blank; 26. metal block 1; 27. metal block 2. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] As attached Figure 1 -Attached Figure 3As shown, a wheel hub blank weight reduction mold includes a mounting plate 1, which is annular, and the upper part of the mounting plate 1 is fixedly mounted with a lower mold core 4 by screws, and the lower part of the lower mold core 4 is fixedly mounted with a fixing plate 2 by screws, and the upper part of the fixing plate 2 is connected with a diverter cone 3, and the diverter cone 3 is located in the middle of the lower mold core 4. An upper mold core 5 is mounted above the lower mold core 4, and a central riser 8 is arranged in the middle of the upper part of the upper mold core 5. A riser pressure plate 9 is mounted on the upper part of the upper mold core 5 by screws, and the riser pressure plate 9 presses on the central riser 8 to fix it on the upper mold core 5. A riser ring 10 is fixedly mounted on the outer periphery of the upper part of the upper mold core 5 by screws. A plurality of open risers 21 are opened on the outer periphery of the riser ring 10, and the open risers 21 are aligned with the upper part of the intersection of the spokes and the rim in the wheel hub. The open risers 21 are arranged through the upper and lower end surfaces of the riser ring 10, and the width of the upper end of the open riser 21 is smaller than the width of the lower end. A plurality of blind risers 22 are provided on the outer periphery of the riser ring 10, and the blind risers 22 are located above the non-intersection position of the spoke and the rim. The lower end of the blind riser 22 is connected to the lower end surface of the riser ring 10, and the upper end of the blind riser 22 is a certain distance away from the upper end surface of the riser ring 10. A through hole is provided at the position above the blind riser 22 in the riser ring 10, and an exhaust plug 7 is installed in the through hole. The provision of the through hole and the exhaust plug 7 enables the blind riser 22 to be connected to the outside air, ensuring that the molten metal can enter the blind riser 22 for shrinkage compensation during casting.

[0018] The junction between the spoke and the rim is a hot spot, which requires more molten metal for shrinkage compensation. An open riser 21 is provided on the riser ring 10 at a position corresponding to the junction. The open riser 21 can store more molten metal for shrinkage compensation. There is no obvious hot spot at the non-junction position. A hidden riser 22 is provided to store less molten metal to compensate for shrinkage of the rim and the rim end face. Figure 4 As shown, on the blank 25 obtained by casting, the metal block 27 corresponding to the blind riser 22 is smaller than the metal block 26 corresponding to the exposed riser 21, thereby reducing the metal surplus, reducing the overall quality and reducing the cost.

[0019] A side mold 6 is arranged on the upper part of the mounting plate 1 , and the side mold 6 is arranged around the outer circumference of the lower mold core 4 and the upper mold core 5 .

[0020] A circle of cooling ring 23 is arranged on the upper mold core 5, and a cooling pipe 11 is arranged on the cooling ring 23. The lower end of the cooling pipe 11 is inserted into the cooling ring 23, and cooling water is introduced into the cooling ring 23 through the cooling pipe 11 and flows through the cooling ring 23, so that the upper mold core 5 is cooled and the molding speed is accelerated.

[0021] A second fixing plate 15 and a push plate 16 are provided below the mounting plate 1, and the second fixing plate 15 and the push plate 16 are connected by bolts. A plurality of ejector rods 14 are connected to the upper portion of the second fixing plate 15, and the upper ends of the ejector rods 14 extend into the lower mold core 4, and an ejector coupling head 24 is connected to the lower portion of the push plate 16. After the casting is completed, the ejector coupling head 24 is pushed by an external mechanism, thereby driving the push plate 16 and the second fixing plate 15 to move upward, and the second fixing plate 15 then drives the ejector rods 14 to rise, thereby ejecting the blank 25 from the lower mold core 4.

[0022] A bottom plate 17 is provided below the push plate 16, a support column 18 is connected to the top of the bottom plate 17, a guide column 19 is connected to the top of the support column 18, and the upper end of the guide column 19 is connected to the bottom surface of the mounting plate 1. A guide sleeve 20 is provided inside the fixed plate 15 and the push plate 16, and the guide column 19 is provided through the guide sleeve 20. Through the cooperation of the guide column 19 and the guide sleeve 20, the movement of the fixed plate 15 and the push plate 16 in the vertical direction is limited, so as to prevent the fixed plate 15 and the push plate 16 from tilting during the rising process.

[0023] The second fixing plate 15 is provided with a cooling pipe 12, and the cooling pipe 12 is connected with a plurality of cooling branches 13, and the upper ends of these cooling branches 13 extend into the lower mold core 4, the fixing plate 1 2 and the diverter cone 3 respectively, so as to achieve the cooling effect. Multiple positions are cooled, thereby accelerating the forming speed of the blank 25.

[0024] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A wheel hub blank weight reduction mold, characterized in that: The invention comprises a mounting plate (1), wherein a lower mold core (4) is arranged on the upper part of the mounting plate (1), a diverter cone (3) is arranged in the middle of the lower mold core (4), an upper mold core (5) is arranged above the lower mold core (4), a plurality of side molds (6) are arranged on the mounting plate (1) at positions located on the periphery of the lower mold core (4), a central riser (8) is arranged in the middle of the upper part of the upper mold core (5), and a riser (9) is arranged at the outer periphery of the upper part of the upper mold core (5). A riser ring (10) is provided with a plurality of visible risers (21) and concealed risers (22) on the outer circumference of the riser ring (10), the visible risers (21) and concealed risers (22) are arranged alternately, the lower ends of the visible risers (21) and concealed risers (22) are connected to the lower end surface of the riser ring (10), the upper ends of the visible risers (21) penetrate the upper end surface of the riser ring (10), and the upper ends of the concealed risers (22) do not penetrate the upper end surface of the riser ring (10).

2. A wheel hub blank weight reduction mold according to claim 1, characterized in that: The riser ring (10) is provided with a through hole at a position above the blind riser (22), and a vent plug (7) is arranged in the through hole.

3. A wheel hub blank weight reduction mold according to claim 1, characterized in that: The exposed risers (21) and the concealed risers (22) are evenly distributed on the periphery of the riser ring (10).

4. A wheel hub blank weight reduction mold according to claim 1, characterized in that: A cooling ring (23) is provided at the upper part of the upper mold core (5) at the outer periphery of the central riser (8), and a cooling pipe (11) is provided on the cooling ring (23), and the lower end of the cooling pipe (11) is inserted into the cooling ring (23).

5. A wheel hub blank weight reduction die according to claim 1, characterized in that: A bottom plate (17) is arranged below the mounting plate (1), a support column (18) is connected to the top of the bottom plate (17), a guide column (19) is connected to the top of the support column (18), the top of the guide column (19) is connected to the bottom surface of the mounting plate (1), a second fixing plate (15) and a push plate (16) are arranged above the bottom plate (17), guide sleeves (20) are arranged inside the second fixing plate (15) and the push plate (16), the guide column (19) is arranged through the guide sleeve (20), a plurality of ejector rods (14) are connected to the second fixing plate (15), and an ejector connector (24) is arranged at the bottom of the push plate (16).

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