A casting equipment for manufacturing automobile aluminum alloy wheels

Abstract

The invention discloses a casting device for manufacturing automobile aluminum alloy wheel hubs. The invention relates to the technical field of wheel hub casting devices, comprising a lower mold, the outer wall of the lower mold is fixedly connected with a fixing ring, the fixing ring is annularly arranged on the outer side of the lower mold, the upper side of the fixing ring is fixedly connected with four hydraulic presses, the four hydraulic presses are respectively arranged at the front, rear, left and right sides of the lower mold, and the output ends of the four hydraulic presses are all facing the middle upper side of the lower mold, the output end of the hydraulic press is fixedly connected with a connecting plate, the side of the connecting plate away from the hydraulic press is slidably connected with a side mold, the four side molds can form an annular structure, and after the four side molds form the annular structure, the invention is provided with side molds, upper molds, lower molds and other structures, so that a wheel hub molding chamber can be formed inside, and then the wheel hub can be molded after casting aluminum water, which has the characteristics of strong practicality and can reduce surface molding defects during wheel hub casting.

Description

Technical Field

[0001] The invention relates to the technical field of wheel hub casting equipment, in particular to casting equipment for manufacturing automobile aluminum alloy wheel hubs. Background Art

[0002] Low-pressure casting refers to a casting method in which the mold is generally placed above a sealed crucible, and compressed air is introduced into the crucible to create a low pressure on the surface of the molten metal, so that the molten metal rises from the riser to fill the mold and control solidification. This casting method has good shrinkage compensation, dense casting structure, and is easy to cast large, thin-walled and complex castings. No riser is required, the metal recovery rate reaches 95%, there is no pollution, and it is easy to realize automation, but the equipment cost is high and the production efficiency is low. It is generally used for casting non-ferrous alloys. Low-pressure casting can use sand molds, metal molds, graphite molds, etc. The filling process is different from gravity casting such as metal mold casting and sand casting, and also different from pressure casting with high pressure and high speed filling.

[0003] However, when used in the wheel hub casting process, due to the large number of wheel hub spoke patterns, the surface tension of the aluminum alloy liquid during casting can easily cause uneven liquid distribution when passing through the inner wall of the mold, resulting in wrinkles or pits on the surface after molding.

[0004] Therefore, it is necessary to have a casting device for manufacturing automobile aluminum alloy wheels that has a strong design practicability and can reduce surface molding defects during wheel casting. Summary of the invention

[0005] The purpose of the present invention is to provide a casting device for manufacturing automobile aluminum alloy wheels to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a casting device for manufacturing automobile aluminum alloy wheel hubs, comprising a lower mold, the outer wall of the lower mold is fixedly connected to a fixing ring, the fixing ring is annularly arranged on the outer side of the lower mold, the upper side of the fixing ring is fixedly connected to four hydraulic presses, the four hydraulic presses are respectively arranged at the front, rear, left and right sides of the lower mold, and the output ends of the four hydraulic presses are all facing the middle upper side of the lower mold, the output end of the hydraulic press is fixedly connected to a connecting plate, the side of the connecting plate away from the hydraulic press is slidably connected to a side mold, the four side molds can form an annular structure, and after the four side molds form an annular structure, the lower side thereof contacts the upper surface of the lower mold, an upper mold is arranged in the middle of the four side molds, the upper side of the upper mold is rotatably connected to an upper connecting pile through a bearing, and a shaking mechanism is arranged on the right side of the lower mold;

[0007] A casting channel is opened inside the upper mold, the lower end of the casting channel is located in the middle of the lower side of the upper mold, and the upper end of the casting channel is located on the upper part of the side wall of the upper mold. A heating mechanism is arranged inside the upper mold. When in use, the hydraulic press is started to push the connecting plate to move, so that the four side molds form an annular mold on the upper side of the lower mold, and then the upper connecting pile is driven downward by the lifting device in the production line, so that the lower side of the upper mold is extended into the side molds to form a complete mold, and then the negative pressure device is used to evacuate air between the lower mold, the side mold and the upper mold to form a negative pressure between the lower mold, the side mold and the upper mold, and then the molten aluminum alloy is introduced through the upper side of the casting channel, so that the aluminum alloy solution is cooled and formed between the lower mold, the side mold and the upper mold, thereby completing the casting of the vehicle wheel hub.

[0008] According to the above technical solution, the shaking mechanism includes a chassis, which is located on the lower side of the fixed ring, and the upper side of the chassis is connected to the lower side of the fixed ring through a torsion spring, and the middle part of the upper side of the chassis is rotatably connected to the lower surface of the lower mold, and the shaking mechanism also includes an arc-shaped rack, one side of the arc-shaped rack is fixedly connected to the outer wall of the fixed ring, a motor is provided on the right side of the arc-shaped rack, and a semi-bevel gear is fixedly connected to the output end of the motor, and the lower side of the outer wall of the semi-bevel gear is meshed with the upper side of the arc-shaped rack.

[0009] According to the above technical solution, the outer wall of the semi-bevel gear is only provided with a toothed structure on the front side, and when the semi-bevel gear rotates, it can drive the arc-shaped rack and the fixed ring to deflect backwards, and the chassis and the motor are fixed to the bottom surface. During the process of pouring molten aluminum, the motor is started to drive the semi-bevel gear to rotate. Since a toothed structure is provided on one side of the semi-bevel gear, the arc-shaped rack will be pushed backwards during the rotation of the semi-bevel gear, so that the arc-shaped rack drives the fixed ring to rotate, and the fixed ring tightens the torsion spring at the connection with the chassis during the deflection process. After the toothed structure of the semi-bevel gear is separated from the surface of the arc-shaped rack, the elastic force of the torsion spring will drive the fixed ring to deflect and reset, thereby making the lower mold, side mold, upper mold and other structures, in the process of casting molten aluminum, the aluminum water flowing out from the lower side of the casting channel and the aluminum water diffusing outward can be slightly shaken relative to the outer wall of the lower mold and the outer wall of the side mold and the upper mold during the flow process, so that the flow is more uniform, thereby reducing the wrinkles and defects formed on the surface after molding.

[0010] According to the above technical solution, the shaking mechanism includes a connecting box, and a plurality of nozzles are fixedly connected to the upper side of the connecting box. The connecting box is located at the lower middle side of the lower mold, and the nozzles are connected to the interior of the connecting box. The lower middle side of the lower mold bulges upward.

[0011] According to the above technical solution, the heating mechanism includes a heating tube, an annular cavity is opened inside the upper mold, the annular cavity is opened on the outside of the casting channel, the inner wall of the annular cavity is fixedly connected to the outer wall of the heating tube, and a connecting rod is also fixedly connected to the lower side of the inner wall of the casting channel, one end of the connecting rod is fixedly connected to a conical guide block, and a heater is arranged inside the conical guide block.

[0012] According to the above technical solution, the conical guide block is a conical structure, and the upper side of the conical guide block is an arc structure, and the lower side of the conical guide block is provided with a downwardly extending tip, and the conical guide block is located in the middle of the lower side of the casting channel.

[0013] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: the present invention forms a hub molding chamber inside the side mold, the upper mold, the lower mold and other structures, and then the hub can be molded after pouring aluminum liquid;

[0014] By providing a shaking mechanism, the motor can drive the fixed ring to deflect when it starts, so that the lower mold, side mold, upper mold and other structures can all produce a small deflection, so that the aluminum liquid can shake relative to the device, making its contact surface with the mold more uniform;

[0015] By providing a heating mechanism, the device can collect the cast aluminum liquid during use, so as to reduce the surface fluctuation of the aluminum liquid caused by the aluminum liquid falling, thereby reducing the wrinkles and defects on the surface of the aluminum liquid after forming;

[0016] By providing a connection box, a nozzle and other structures that can heat the lower side of the lower mold, the device can ensure the uniform fluidity of the molten aluminum before the casting is completed, thereby avoiding uneven molding of the molten aluminum. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0019] Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention;

[0020] Figure 3 It is a schematic diagram of the structure of the fixing ring of the present invention;

[0021] Figure 4 It is a schematic diagram of the lower mold structure of the present invention;

[0022] Figure 5 It is a schematic diagram of the internal structure of the upper mold of the present invention;

[0023] Figure 6 It is a schematic diagram of the internal structure of the conical guide block of the present invention;

[0024] In the figure: 1. lower mold; 2. fixing ring; 3. hydraulic press; 4. connecting plate; 5. side mold; 6. upper mold; 7. upper connecting pile; 8. shaking mechanism; 9. casting channel; 10 heating mechanism; 801. chassis; 802. arc rack; 803. motor; 804. semi-bevel gear; 805. connecting box; 806. nozzle; 101. heating tube; 102. connecting rod; 103. conical guide block; 104. heater. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] See also Figure 1-Figure 6 The present invention provides a technical solution: a casting device for manufacturing an automobile aluminum alloy wheel hub, comprising a lower mold 1, the outer wall of the lower mold 1 is fixedly connected with a fixing ring 2, the fixing ring 2 is annularly arranged on the outer side of the lower mold 1, the upper side of the fixing ring 2 is fixedly connected with four hydraulic presses 3, the four hydraulic presses 3 are respectively arranged at the front, rear, left and right sides of the lower mold 1, and the output ends of the four hydraulic presses 3 are all toward the middle upper side of the lower mold 1, the output end of the hydraulic press 3 is fixedly connected with a connecting plate 4, and the connecting plate 4 slides away from the side of the hydraulic press 3 A side mold 5 is rotatably connected to the upper mold 1. The four side molds 5 can form a ring structure. After the four side molds 5 form the ring structure, the lower side thereof contacts the upper surface of the lower mold 1. An upper mold 6 is arranged in the middle of the four side molds 5. The upper side of the upper mold 6 is rotatably connected to an upper connecting pile 7 through a bearing. A shaking mechanism 8 is arranged on the right side of the lower mold 1. A casting channel 9 is opened inside the upper mold 6. The lower end of the casting channel 9 is located in the middle of the lower side of the upper mold 6. The upper end of the casting channel 9 is located on the upper part of the side wall of the upper mold 6. A heating mechanism 10 is arranged inside the upper mold 6.

[0027] When in use, the hydraulic press 3 is started to push the connecting plate 4 to move, so that the four side molds 5 form a ring mold on the upper side of the lower mold 1, and then the upper connecting pile 7 is driven downward by the lifting device in the production line, so that the lower side of the upper mold 6 extends into the side molds 5 to form a complete mold, and then the negative pressure device is used to evacuate the space between the lower mold 1, the side mold 5, and the upper mold 6, so that negative pressure is formed between the lower mold 1, the side mold 5, and the upper mold 6, and then the molten aluminum alloy is introduced through the upper side of the casting channel 9, so that the aluminum alloy solution is cooled and formed between the lower mold 1, the side mold 5, and the upper mold 6, thereby completing the casting of the vehicle wheel hub;

[0028] The shaking mechanism 8 includes a chassis 801, which is located at the lower side of the fixed ring 2, and the upper side of the chassis 801 is connected to the lower side of the fixed ring 2 through a torsion spring, and the middle part of the upper side of the chassis 801 is rotatably connected to the lower surface of the lower mold 1, and the shaking mechanism 8 also includes an arc-shaped rack 802, one side of the arc-shaped rack 802 is fixedly connected to the outer wall of the fixed ring 2, and a motor 803 is arranged on the right side of the arc-shaped rack 802, and the output end of the motor 803 is fixedly connected to a semi-bevel gear 804, and the lower side of the outer wall of the semi-bevel gear 804 is connected to the arc-shaped rack 802. The upper side of the half-bevel gear 804 is meshed with the upper side of the rack 802, and the outer wall of the half-bevel gear 804 is only provided with a toothed structure on the front side, and when the half-bevel gear 804 rotates, it can drive the arc-shaped rack 802, the fixed ring 2 and other structures to deflect backward, the chassis 801 and the motor 803 are fixed to the bottom surface, and the shaking mechanism 8 includes a connecting box 805, and a plurality of nozzles 806 are fixedly connected to the upper side of the connecting box 805. The connecting box 805 is located at the lower middle side of the lower mold 1, and the nozzles 806 are connected to the inside of the connecting box 805, and the lower middle side of the lower mold 1 bulges upward;

[0029] During the process of pouring molten aluminum, the starting motor 803 drives the semi-bevel gear 804 to rotate. Since a tooth structure is provided on one side of the semi-bevel gear 804, the arc rack 802 will be pushed backward during the rotation of the semi-bevel gear 804, so that the arc rack 802 drives the fixed ring 2 to rotate. At this time, the side mold 5, the upper mold 6 and other structures are in close contact, and the lower mold 1 is fixedly connected to the fixed ring 2, the lower mold 1 is in close contact with the side mold 5, the upper mold 6 and other structures, and the upper mold 6 is rotatably connected to the upper connecting pile 7. When the fixed ring 2 rotates, it will drive the hydraulic press 3, the connecting plate 4, the side mold 5, the upper mold 6, The lower mold 1 and other structures are slightly deflected, so that the fixing ring 2 tightens the torsion spring at the connection between the fixing ring 2 and the chassis 801 during the deflection process. After the tooth structure of the semi-bevel gear 804 is separated from the surface of the arc-shaped rack 802, the elastic force of the torsion spring will drive the fixing ring 2 to deflect and reset, thereby causing the lower mold 1, the side mold 5, the upper mold 6 and other structures to cause the aluminum water flowing out of the lower side of the casting channel 9 and the aluminum water diffusing outward to slightly shake relative to the outer wall of the lower mold 1 and the outer wall of the side mold 5 and the upper mold 6 during the casting process, thereby making the flow more uniform, thereby reducing the wrinkles and defects formed on the surface after molding;

[0030] In the process of use, air is supplied to the connection box 805 and the nozzle 806 is started to spray fire and heat the lower side of the lower mold 1, so that the temperature of the lower mold 1 is increased, so that the molten aluminum discharged downward from the pouring channel 9 will not solidify in a short time after contacting the lower mold 1, so that it is easy to flow on the lower mold 1. In addition, due to the easy flow, when the lower mold 1 shakes the molten aluminum, the molten aluminum can be distributed more evenly;

[0031] The heating mechanism 10 includes a heating tube 101. An annular cavity is provided inside the upper mold 6. The annular cavity is provided outside the casting channel 9. The inner wall of the annular cavity is fixedly connected to the outer wall of the heating tube 101. A connecting rod 102 is also fixedly connected to the lower side of the inner wall of the casting channel 9. A conical guide block 103 is fixedly connected to one end of the connecting rod 102. A heater 104 is provided inside the conical guide block 103. The conical guide block 103 is a conical structure, and the upper side of the conical guide block 103 is a circular arc structure. The lower side of the conical guide block 103 is provided with a downwardly extending tip. The conical guide block 103 is located at the middle of the lower side of the casting channel 9.

[0032] When the molten aluminum is discharged downward through the casting channel 9, it will pass through the heating tube 101 and the conical guide block 103. Since the heating tube 101 continuously heats the inside of the casting channel 9, the molten aluminum inside the casting channel 9 maintains good fluidity, and when the molten aluminum flows through the conical guide block 103, due to the special outer wall shape of the conical guide block 103, the molten aluminum will gather toward the lower side of the tail end of the conical guide block 103 after passing through the conical guide block 103, thereby reducing the outward diffusion of the molten aluminum and the wrinkles caused by pushing on the surface of the molten aluminum, so that the molten aluminum can diffuse outward from the middle inner side as much as possible to avoid impact on the surface. In addition, since the molten aluminum will be gathered when passing through the conical guide block 103 and the heater 104 inside the conical guide block 103 is continuously heated, the fluidity of the molten aluminum when passing through is guaranteed, and the molding effect of the molten aluminum is better.

[0033] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A casting device for manufacturing an automobile aluminum alloy wheel hub, comprising a lower mold (1), the outer wall of the lower mold (1) being fixedly connected to a fixing ring (2), characterized in that: The fixing ring (2) is arranged in a ring shape on the outer side of the lower mold (1), and the upper side of the fixing ring (2) is fixedly connected to four hydraulic presses (3). The four hydraulic presses (3) are respectively arranged at the front, rear, left and right sides of the lower mold (1), and the output ends of the four hydraulic presses (3) are all facing the middle upper side of the lower mold (1). The output end of the hydraulic press (3) is fixedly connected to a connecting plate (4), and the side of the connecting plate (4) away from the hydraulic press (3) is slidably connected to a side mold (5). The four side molds (5) can form a ring structure, and after the four side molds (5) form the ring structure, the lower side thereof contacts the upper surface of the lower mold (1), and the middle part of the four side molds (5) is provided with an upper mold (6), and the upper side of the upper mold (6) is rotatably connected to an upper connecting pile (7) through a bearing, and a shaking mechanism (8) is provided on the right side of the lower mold (1); A casting channel (9) is provided inside the upper mold (6), the lower end of the casting channel (9) is located at the middle of the lower side of the upper mold (6), the upper end of the casting channel (9) is located at the upper part of the side wall of the upper mold (6), and a heating mechanism (10) is provided inside the upper mold (6); The heating mechanism (10) comprises a heating tube (101), an annular cavity is provided inside the upper mold (6), the annular cavity is provided outside the casting channel (9), the inner wall of the annular cavity is fixedly connected to the outer wall of the heating tube (101), a connecting rod (102) is also fixedly connected to the lower side of the inner wall of the casting channel (9), one end of the connecting rod (102) is fixedly connected to a conical guide block (103), and a heater (104) is provided inside the conical guide block (103); The conical guide block (103) is a conical structure, the upper side of the conical guide block (103) is an arc structure, and the lower side of the conical guide block (103) is provided with a downwardly extending tip, and the conical guide block (103) is located at the middle of the lower side of the casting channel (9); The shaking mechanism (8) comprises a chassis (801), wherein the chassis (801) is located at the lower side of the fixing ring (2), and the upper side of the chassis (801) is connected to the lower side of the fixing ring (2) via a torsion spring, and the middle part of the upper side of the chassis (801) is rotatably connected to the lower surface of the lower mold (1), and the shaking mechanism (8) further comprises an arc-shaped rack (802), one side of the arc-shaped rack (802) is fixedly connected to the outer wall of the fixing ring (2), a motor (803) is arranged on the right side of the arc-shaped rack (802), and the output end of the motor (803) is fixedly connected to a semi-bevel gear (804), and the lower side of the outer wall of the semi-bevel gear (804) is meshed with the upper side of the arc-shaped rack (802); The outer wall of the semi-bevel gear (804) is provided with a toothed structure only on the front side, and when the semi-bevel gear (804) rotates, it can drive the arc-shaped rack (802) and the fixing ring (2) to deflect backwards, and the chassis (801) and the motor (803) are both fixed to the bottom surface.

2. The casting equipment for manufacturing automobile aluminum alloy wheel hub according to claim 1, characterized in that: The shaking mechanism (8) comprises a connection box (805), a plurality of nozzles (806) being fixedly connected to the upper side of the connection box (805), the connection box (805) being located at the lower middle side of the lower mould (1), and the nozzles (806) being connected to the interior of the connection box (805), and the lower middle side of the lower mould (1) bulging upward.

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