One-mold multi-piece hub casting device and casting method

Abstract

The one-mold multi-piece hub casting device comprises a plurality of mold assemblies, each mold assembly comprises an upper mold, a lower mold plate and an auxiliary side mold, the lower mold is installed on the upper portion of the lower mold plate, a sprue spreader is arranged in the middle of the lower mold, the upper mold is located above the lower mold, and each mold assembly further comprises a main side mold; a plurality of mold assemblies and a main side mold are matched to form a plurality of cavities, feeding sleeves are arranged on the upper portions of the mold assemblies and installed on the upper mold, the feeding sleeves are communicated with the cavities, a plurality of liquid outlet holes are formed in the lower portion of the flow dividing pouring cup, the flow dividing pouring cup is communicated with the flow groove through the liquid outlet holes, and a feeding port is formed in the lower portion of the flow groove. The feeding port is communicated with the feeding sleeves, and one part of the feeding port is arranged in the upper ends of the feeding sleeves. Molten metal can be uniformly distributed, so that a plurality of hubs are synchronously cast and molded.

Description

Technical Field

[0001] The present invention relates to the technical field of hub production, and more specifically, to a hub casting device and a casting method for multiple parts in one mold. Background Art

[0002] With the increasing demand for hubs in the motorcycle market, the competition in the motorcycle hub market is becoming increasingly fierce, and rapid delivery is required. For small-sized hubs, using the traditional one-piece casting method in one mold, only one hub can be produced at a time, with low efficiency, and the mold and energy consumption costs for single-piece casting are relatively high, which cannot adapt to market competition. Summary of the Invention

[0003] The purpose of the present invention is to overcome the above-mentioned deficiencies of the prior art and provide a hub casting device and a casting method for multiple parts in one mold.

[0004] To achieve the above purpose, the present invention adopts the following technical solutions:

[0005] The present invention discloses a hub casting device for multiple parts in one mold, including a plurality of mold components. Each mold component includes an upper mold, a lower template, and a secondary side mold. A lower mold is installed on the upper part of the lower template, and a sprue cone is arranged at the middle position of the lower mold. The upper mold is located above the lower mold. The mold component further includes a main side mold. Cavities are formed in each of the plurality of mold components. An inlet sleeve is arranged on the upper part of the mold component, and the inlet sleeve is installed on the upper mold and communicates with the cavity. It further includes a runner and a sub-gate. A plurality of liquid outlet holes are formed in the lower part of the sub-gate. The sub-gate is connected to the runner through the liquid outlet holes. A feeding port is arranged at the lower part of the runner, and the feeding port is respectively connected to each inlet sleeve. A part of the feeding port is arranged inside the upper end of the inlet sleeve.

[0006] Further, the cross-sectional areas of the plurality of liquid outlet holes are the same, and the sum of the cross-sectional areas of the plurality of liquid outlet holes is smaller than the cross-sectional area of the upper end opening of the sub-gate.

[0007] Further, a pressure ring is installed on the upper part of the upper mold, and the pressure ring fixes the inlet sleeve on the upper mold.

[0008] Further, a flow dividing platform is arranged inside the runner. The upper end of the flow dividing platform is connected to the bottom surface of the sub-gate. A deflector is arranged at the lower part of the runner. One side of the deflector is connected to the lower part of the flow dividing platform, and the other side of the deflector is connected to the feeding port. The deflector is inclined, and the height of the side of the deflector close to the flow dividing platform is higher than the height of the side of the deflector close to the feeding port.

[0009] Further, the lower mold includes a first lower mold and a second lower mold. The second lower mold fixes the first lower mold on the lower template, and the first lower mold fixes the sprue cone on the lower template.

[0010] Further, a plurality of risers are arranged on the upper part of the upper mold.

[0011] Further, it further includes a mounting block, a pressing plate is arranged on the upper part of the pressing ring, and the pressing plate is located between the mounting block and the pressing ring.

[0012] Further, it further includes an ejection mechanism. The ejection mechanism includes a lifting table, a support seat and an oil cylinder are installed on the lifting table, a support rod is connected to the upper part of the support seat, the upper end of the support rod is connected to the lower template, the oil cylinder is drivingly connected with a connecting head, a top tray is connected to the connecting head, a plurality of jacking rods are connected to the upper part of the top tray, the upper end of the jacking rod is connected to a support plate, a plurality of ejection rods are arranged on the support plate, the upper end of the ejection rod passes through the lower die and extends into the cavity, a through hole is formed in the support plate for the support rod to pass through, and the diameter of the support seat is larger than the diameter of the through hole.

[0013] A method for casting a multi-piece hub in one mold includes the following steps;

[0014] Clean the upper mold, lower mold, secondary side mold and main side mold;

[0015] The upper mold, lower mold and secondary side mold move closer and combine with the main side mold to form a plurality of cavities;

[0016] Pour the molten metal into the shunt pouring cup, and the molten metal in the shunt pouring cup uniformly flows out through the liquid outlet holes into the runner, and the molten metal in the runner uniformly flows into each cavity through the feeding sleeve and fills each cavity;

[0017] Cool the mold assembly so that the molten metal is formed synchronously in each cavity;

[0018] Open the mold and take out the products from each cavity.

[0019] The beneficial effect of the present invention is that the molten metal is evenly distributed to a plurality of casting cavities through the shunt pouring cup, and the molten metal is cooled synchronously in the plurality of casting cavities, so that the casting of a plurality of hubs can be completed simultaneously. Description of the Drawings

[0020] Figure 1 It is a schematic structural diagram of a multi-piece hub casting device in one mold in this embodiment;

[0021] Figure 2 It is a schematic structural diagram of an ejection mechanism in this embodiment;

[0022] Figure 3 It is a schematic structural diagram of the lower mold of a multi-piece hub casting device in one mold in this embodiment;

[0023] Figure 4 It is a partial schematic structural diagram of a multi-piece hub casting device in one mold in this embodiment.

[0024] Reference numerals: 1, main side die; 2, lower template; 3, sprue; 4, first lower die; 5, second lower die; 6, secondary side die; 7, upper die; 8, mounting block; 9, pressure ring; 10, runner; 11, deflector; 12, feed sleeve; 13, pressing plate; 14, riser; 15, sub-gating cup; 16, liquid outlet hole; 17, funnel; 18, support seat; 19, support rod; 20, support plate; 21, ejector rod; 22, oil cylinder; 23, connector; 24, ejector tray; 25, lifting rod; 26, sub-gating platform; 27, feeding port; 28, fixing ring; 29, convex ring; 30, extension ring; 31, positioning convex platform; 32, mounting ring. Detailed implementation manners

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0026] As Figure 1 - Figure 2 shown, a multi-piece hub casting device includes a plurality of die assemblies. The plurality of die assemblies form an integral die. The die assembly includes an upper die 7, a lower template 2, and a secondary side die 6. A lower die is installed on the upper part of the lower template 2. A sprue 3 is arranged at the middle position of the lower die. The upper die 7 is located above the lower die. The die assembly further includes a main side die 1 located at the middle position of the plurality of die assemblies. Each die assembly shares the main side die 1. After the upper die 7, the lower die, the main side die 1, and the secondary side die 6 are closed, a cavity is formed, that is, a cavity is formed in each die assembly. A feed sleeve 12 is arranged on the upper part of the die assembly. The feed sleeve 12 is installed on the upper die 7. The feed sleeve 12 communicates with the cavity. It further includes a runner 10 and a sub-gating cup 15. A plurality of liquid outlet holes 16 are opened at the lower part of the sub-gating cup 15. The areas of the liquid outlet holes 16 are the same. The sub-gating cup 15 is connected to the runner 10 through the liquid outlet holes 16. A funnel 17 is connected to the upper part of the sub-gating cup 15. A plurality of feeding ports 27 are arranged at the lower part of the runner 10. The feeding ports 27 are respectively communicated with the feed sleeves 12. A part of the feeding ports 27 is arranged inside the upper end of the feed sleeve 12.

[0027] The sum of the areas of the plurality of liquid outlet holes 16 is smaller than the opening area of the upper end of the sub-gating cup 15, so as to achieve uniform flow distribution.

[0028] A pressure ring 9 is installed on the upper part of the upper die 7. A positioning boss 31 is provided on the upper part of the upper die 7. The lower part of the outer periphery of the feeding sleeve 12 is connected with an installation ring 32. The installation ring 32 is located inside the positioning boss 31. Specifically, the outer wall of the installation ring 32 fits against the inner wall of the positioning boss 31. The pressure ring 9 is installed on the upper part of the positioning boss 31. A part of the pressure ring 9 is located above the installation ring 32. The positioning boss 31 and the pressure ring 9 are connected by bolts. The pressure ring 9 fixes the feeding sleeve 12 on the upper die 7.

[0029] A flow dividing table 26 is arranged inside the flow channel 10. The upper end of the flow dividing table 26 is connected with the bottom surface of the flow dividing pouring cup 15. Specifically, it is connected with the part of the bottom surface of the flow dividing pouring cup 15 where the liquid outlet hole 16 is not opened. A guide plate 11 is arranged at the lower part of the flow channel 10. One side of the guide plate 11 is connected with the lower part of the flow dividing table 26, and the other side of the guide plate 11 is connected with the feeding port 27. The guide plate 11 is inclined. The height of the side of the guide plate 11 close to the flow dividing table 26 is higher than the height of the side of the guide plate 11 close to the feeding port 27.

[0030] As Figure 3 shown, the lower die includes a first lower die 4 and a second lower die 5. A convex ring 29 is arranged at the outer peripheral position of the upper part of the lower template 2. The lower part of the outer periphery of the first lower die 4 is provided with an extension ring 30. The convex ring 29 and the extension ring 30 have the same height. A part of the second lower die 5 is located above the convex ring 29 and the extension ring 30. The lower template 2 and the second lower die 5 are connected by bolts. The second lower die 5 presses on the extension ring 30 to fix the first lower die 4 on the lower template 2.

[0031] A fixing ring 28 is arranged at the lower part of the outer periphery of the flow dividing cone 3. A ring groove is opened at the lower part of the first lower die 4. When the flow dividing cone 3 is inserted into the middle position of the first lower die from bottom to top, the fixing ring 28 is stuck into the ring groove. When the second lower die 5 fixes the first lower die 4 to the lower template 2, the bottom surface of the fixing ring 28 abuts against the upper end surface of the lower template 2. The first lower die 4 presses the flow dividing cone 3 on the lower template 2 for fixation.

[0032] As Figure 4 shown, the casting device further includes a mounting block 8. A pressing plate 13 is arranged on the upper part of the pressure ring 9. The pressing plate 13 is located between the mounting block 8 and the pressure ring 9.

[0033] A plurality of risers 14 are arranged on the upper part of the upper die 7. A part of the risers 14 is located between the mounting block 8 and the pressing plate 13. The risers 14 are clamped and fixed by the mounting block 8 and the pressing plate 13. Molten metal is added into the risers 14 for feeding.

[0034] As Figure 2As shown in the figure, this casting device includes an ejection mechanism. The ejection mechanism includes a lifting platform (not shown in the figure). A support seat 18 and an oil cylinder 22 are installed on the lifting platform. A support rod 19 is connected to the upper part of the support seat 18. The upper end of the support rod 19 is connected to the lower template 2. The oil cylinder 22 is drivingly connected with a connection head 23. A top-out tray 24 is connected to the connection head 23. A number of jacking rods 25 are connected to the upper part of the top-out tray 24. The upper ends of the jacking rods 25 are connected to a support plate 20. A number of ejector rods 21 are arranged on the support plate 20. Holes for the ejector rods 21 to extend into are reserved on the lower die and the lower template. The upper ends of the ejector rods 21 pass through these holes and extend into the cavity. Through holes are formed on the support plate 20 for the support rod 19 to pass through. The diameter of the support seat 18 is larger than the diameter of the through hole. The support plate 20 is placed on the support seat 18. The ejection mechanism acts on the support plate 20 by arranging a number of jacking rods 25 to ensure that the products in each cavity are evenly stressed, the ejection is stable, and the products are prevented from being ejected crookedly or not ejected at all.

[0035] The multi-piece hub casting in one mold includes the following steps:

[0036] Use an air gun to blow the upper mold 7, the lower mold, the secondary side mold 6 and the main side mold 1 to clean the inner sides of the upper mold 7, the lower mold, the secondary side mold 6 and the main side mold 1. The upper mold 7, the lower mold, and the secondary side mold 6 move closer and cooperate with the main side mold 1 to complete mold closing. Cavities are formed between the upper mold 7, the lower mold, the main side mold 1 and the secondary side mold 6.

[0037] The molten aluminum at a temperature of 690 - 725 °C is poured into the upper part of the funnel 7. After the molten aluminum flows into the diversion pouring cup 15, it evenly flows out through the liquid outlet holes 16 into the runner 10. The molten aluminum flowing out from the liquid outlet holes 16 first flows along, and evenly flows into each cavity through the feeding sleeve 12 and fills each cavity.

[0038] Synchronously cool each mold component so that the molten aluminum synchronously cools and solidifies in each cavity, and the obtained products are cooled to room temperature.

[0039] The secondary side mold 6 moves away from the cavity. The lifting platform drives the support seat 18 to descend. The support seat 18 drives the lower template 2 to move downward through the support rod 19, thereby driving the lower die to descend, and the products also descend with the lower die. The oil cylinder 22 descends with the lifting platform, thereby driving the support plate 20 to descend together. After the lifting platform descends a certain distance so that the distance at which the lower die disengages is sufficient to take out the products. The oil cylinder controls the connection head 23 to rise, drives the top-out tray 24 to rise through 23. The top-out tray 24 acts on the support plate 20 through a number of jacking rods 25, so that the support plate 20 is evenly stressed. The support plate 20 then drives the ejector rods 21 to rise to eject the products located on the lower die. The products in each cavity need to be evenly stressed and ejected smoothly. The synchronous casting of multiple hubs in one mold is completed.

[0040] The above are only the preferred embodiments of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions falling within the concept of the present invention belong to the protection scope of the present invention. It should be noted that for those of ordinary skill in the art, several improvements and refinements made without departing from the principle of the present invention should also be regarded as within the protection scope of the present invention.

Claims

1. A wheel hub casting device with multiple parts in one mold, characterized in that: The invention comprises a plurality of mold assemblies, wherein the mold assemblies comprise an upper mold (7), a lower mold plate (2), and a secondary side mold (6); a lower mold is installed on the upper part of the lower mold plate (2); a diverter cone (3) is arranged in the middle of the lower mold; the upper mold (7) is located above the lower mold; the mold assembly further comprises a main side mold (1); a cavity is formed in each of the plurality of mold assemblies; a feed sleeve (12) is arranged on the upper part of the mold assembly; the feed sleeve (12) is installed on the upper mold (7); The material sleeve (12) is connected to the mold cavity; it also includes a flow channel (10) and a diversion pouring cup (15), a plurality of liquid outlet holes (16) are opened at the lower part of the diversion pouring cup (15), and the diversion pouring cup (15) is connected to the flow channel (10) through the liquid outlet holes (16). A feed port (27) is arranged at the lower part of the flow channel (10), and the feed port (27) is respectively connected to each feed sleeve (12), and a part of the feed port (27) is arranged in the upper end of the feed sleeve (12).

2. The one-mold-multiple-piece wheel hub casting device according to claim 1, characterized in that: The cross-sectional areas of the plurality of liquid outlet holes (16) are the same, and the sum of the cross-sectional areas of the plurality of liquid outlet holes (16) is smaller than the area of ​​the upper opening of the diversion pouring cup (15).

3. The one-mold-multiple-piece wheel hub casting device according to claim 1, characterized in that: A pressure ring (9) is installed on the upper part of the upper die (7), and the pressure ring (9) fixes the feed sleeve (12) on the upper die (7).

4. The one-mold-multiple-piece wheel hub casting device according to claim 1, characterized in that: A diverter platform (26) is arranged inside the flow channel (10), and the upper end of the diverter platform (26) is connected to the bottom surface of the diverter pouring cup (15). A guide plate (11) is arranged at the lower part of the flow channel (10), one side of the guide plate (11) is connected to the lower part of the diverter platform (26), and the other side of the guide plate (11) is connected to the feed port (27). The guide plate (11) is arranged at an angle, and the height of the guide plate (11) close to the diverter platform (26) is higher than the height of the guide plate (11) close to the feed port (27).

5. The one-mold-multiple-piece wheel hub casting device according to claim 1, characterized in that: The lower mold comprises a lower mold 1 (4) and a lower mold 2 (5), wherein the lower mold 2 (5) fixes the lower mold 1 (4) on the lower mold plate (2), and the lower mold 1 (4) fixes the diverter cone (3) on the lower mold plate (2).

6. The one-mold-multiple-piece wheel hub casting device according to claim 1, characterized in that: A plurality of risers (14) are arranged on the upper part of the upper die (7).

7. The one-mold-multiple-piece wheel hub casting device according to claim 1, characterized in that: It also comprises a mounting block (8), a pressing plate (13) is arranged on the upper part of the pressing ring (9), and the pressing plate (13) is located between the mounting block (8) and the pressing ring (9).

8. The one-mold-multiple-piece wheel hub casting device according to claim 1, characterized in that: The ejection mechanism also includes an ejection mechanism, which includes a lifting platform, on which a support seat (18) and an oil cylinder (22) are installed, the upper part of the support seat (18) is connected to a support rod (19), the upper end of the support rod (19) is connected to the lower mold plate (2), the oil cylinder (22) is drivingly connected to a connecting head (23), the connecting head (23) is connected to an ejection tray (24), the upper part of the ejection tray (24) is connected to a plurality of ejection rods (25), the upper ends of the ejection rods (25) are connected to a support plate (20), the support plate (20) is provided with a plurality of ejection rods (21), the upper ends of the ejection rods (21) pass through the lower mold and extend into the mold cavity, the support plate (20) is provided with a through hole for the support rod (19) to pass through, and the diameter of the support seat (18) is larger than the diameter of the through hole.

9. A method for casting a wheel hub with multiple parts in one mold, characterized in that: The one-mold multi-piece wheel hub casting device according to any one of claims 1 to 8 is characterized by comprising the following steps; The upper mold (7), the lower mold, the auxiliary side mold (6) and the main side mold (1) are cleaned; The upper mold (7), the lower mold, and the auxiliary side mold (6) move together and combine with the main side mold (1) to form a mold cavity; The molten metal is poured into the diverter pouring cup (15), the molten metal in the diverter pouring cup (15) flows out evenly into the flow channel (10) through the liquid outlet hole (16), and the molten metal in the flow channel (10) flows evenly into each cavity through the feed sleeve (12) and fills each cavity; Cooling the mold components allows the molten metal to be formed synchronously in each cavity; Open the mold and take the product out of the cavity.

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