Casting device for renewable heat-resistant high-fatigue cast aluminum alloy and using method of casting device

Abstract

The invention relates to the technical field of renewable heat-resistant high-fatigue cast aluminum alloy casting, in particular to a renewable heat-resistant high-fatigue cast aluminum alloy casting device and a using method thereof.The renewable heat-resistant high-fatigue cast aluminum alloy casting device comprises a gravity casting machine rotating table, an upper mold, a casting hole and a lower mold, and the movable upper mold is installed at the upper end of the inner side of the gravity casting machine rotating table; the gravity casting machine comprises an upper die, a lower die is arranged at the lower end of the upper die, casting holes are formed in one side of the upper die and one side of the lower die, a casting unit is installed at the top end of the lower die, and a power unit is installed on one side of the casting unit. And in the later cleaning process, aluminum slag attached to the inner wall of the cleaning rotating plate can be cleaned again, the cleaning effect and quality are effectively improved, and the subsequent production efficiency and quality can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of renewable heat-resistant high-fatigue cast aluminum alloy casting, and specifically to a renewable heat-resistant high-fatigue cast aluminum alloy casting device and a use method thereof. Background Art

[0002] Renewable heat-resistant high fatigue casting aluminum alloy casting device is a device used to produce aluminum alloy castings with heat resistance and high fatigue strength. The device usually includes a high-temperature melting furnace, a pouring system, a mold and a cooling system. It can process aluminum alloys at higher temperatures and ensure that the performance of the castings is stable when subjected to repeated loads. The renewable characteristics mean that the aluminum alloy can be reused, reducing resource waste and improving economic benefits. Gravity aluminum alloy casting machine is one of them. It is a device that uses gravity to pour molten aluminum alloy into the mold for casting. Its working principle is to use the gravity of the aluminum liquid to guide it to various parts of the mold to ensure the integrity and accuracy of the casting. During the casting process of the gravity aluminum alloy casting machine, molten aluminum may remain on the inner wall of the casting shell. This is mainly because the molten aluminum contacts the inner wall of the casting shell during the pouring process. Especially after the pouring is completed, some molten aluminum may remain in the casting shell. In this case, if the residual molten aluminum is not properly handled, it may affect the quality of the casting. Therefore, in view of the above problems, a renewable heat-resistant and high-fatigue casting aluminum alloy casting device and a method of using the same are proposed. Summary of the invention

[0003] The purpose of the present invention is to provide a renewable heat-resistant and high-fatigue casting aluminum alloy casting device and a method of using the same, so as to solve the problem that during the casting process of a gravity aluminum alloy casting machine, aluminum liquid may remain on the inner wall of the casting shell. This is mainly because the aluminum liquid contacts the inner wall of the casting shell during the pouring process, especially after the pouring is completed, some aluminum liquid may remain in the casting shell. In this case, if the residual aluminum liquid is not properly handled, it may affect the quality of the casting.

[0004] To achieve the above object, the present invention provides the following technical solutions: A renewable heat-resistant and high-fatigue casting aluminum alloy casting device and a method for using the same, comprising a gravity casting machine rotating table, an upper mold, a casting hole and a lower mold, wherein a movable upper mold is installed at the upper inner end of the gravity casting machine rotating table, a lower mold is provided at the lower end of the upper mold, a casting hole is provided on one side of the upper mold and the lower mold, a casting unit is installed at the top of the lower mold, a power unit is installed on one side of the casting unit, the bottom end of one side of the gravity casting machine rotating table is connected to a frame through a power shaft, and a raised plate is fixedly connected to one side of the frame; the power unit comprises a cross bar, connecting blocks are welded and fixed to the outer sides of both ends of the cross bar, a guide rod is slidably connected to the inner side of the connecting block, and a connecting rod is welded and fixed to the top of the guide rod A connecting plate, telescopic springs are installed on the outer sides of both ends of the guide rod, and one end of the telescopic spring is fixedly connected to the fixed ring plate; the casting unit includes a positioning frame, the bottom end of the positioning frame is fixedly connected to a supporting bottom plate for supporting the casting shell, the casting shell is fixed inside the positioning frame through a limiting baffle, a cleaning mechanism is installed on one side of the upper end of the positioning frame, an elastic scraper is welded and fixed to the upper end of one side of the casting shell, a casting groove is provided on the inner side of the casting shell, and a casting port corresponding to the casting hole is provided on one side of the casting shell; the cleaning mechanism includes a cleaning rotating plate, one end of the cleaning rotating plate is provided with a guide groove, a connecting shaft is installed on the inner side of one end of the cleaning rotating plate, and one end of the connecting shaft is fixedly connected to a gear.

[0005] As further optimized content of the present invention, the gravity casting machine rotating table is fixedly connected to the power shaft, the power shaft is rotatably connected to the frame, the raised plate is rotatably connected to the power shaft, the raised plate is welded and fixed to the frame, the raised plate is tightly attached to one end of the cross bar, and the end of the cross bar that is tightly attached to the raised plate is arc-shaped.

[0006] As a further optimization of the present invention, there are two connecting blocks, the angle between the connecting block and the cross bar is 90°, the cross bar is parallel to the guide bar, the end of the connecting plate away from the guide bar is fixedly connected to the lower mold, and the angle between the connecting plate and the guide bar is 90°.

[0007] As a further optimization of the present invention, two fixing ring plates are provided, the fixing ring plates are fixedly connected to the guide rod, the fixing ring plates and the telescopic spring are both arranged on the side of the connecting block away from the connecting plate, and the end of the telescopic spring away from the fixing ring plate is fixedly connected to the connecting plate.

[0008] As a further optimization of the present invention, the positioning frame is fixedly connected to the lower mold, the upper side of one end of the supporting base plate away from the lower mold is arc-shaped, and the center points of the supporting base plate and the positioning frame are arranged on the same vertical line.

[0009] As a further optimization of the present invention, there are two limit baffles, one end of the limit baffle away from the casting shell is rotatably connected to the positioning frame through an axis and a clockwork spring, and two limit baffles are provided, and the limit baffles are distributed on both sides of the positioning frame.

[0010] As a further optimization of the present invention, the elastic scraper is V-shaped, installed at the upper end of the casting port, two casting ports are provided, the casting ports correspond to the casting holes one by one, the vertical section of the casting trough is semicircular, the casting trough is connected to the casting port, and the casting trough is opened in the middle of the casting shell.

[0011] As a further optimization of the present invention, the cleaning rotating plate is arc-shaped at one end away from the connecting shaft, the connecting shaft is rotationally connected to the positioning frame, one end of the connecting shaft is exposed outside the positioning frame, and a gear is installed at the end of the connecting shaft exposed to the positioning frame.

[0012] As a further optimization of the present invention, a plurality of tooth grooves are provided on the lower side of one end of the cross bar away from the frame, the cross bar is meshed with the gear through the tooth grooves provided at the lower end, and the center points of the cross bar and the gear are arranged on the same vertical line.

[0013] As a further optimized content of the present invention, the following steps are included: Step I: pouring aluminum liquid into the casting shell to prepare for casting: the entire equipment is powered on, and the upper mold and the lower mold are controlled to be close to each other, and then aluminum liquid is placed into the casting shell. After the aluminum liquid is placed, the casting preparation process is completed; Step II: The power shaft drives the gravity casting machine rotating table to rotate 90° for casting: The power shaft drives the gravity casting machine rotating table to rotate. At this time, the aluminum liquid inside the casting shell enters the casting hole through the casting port. During this process: The elastic scraper can effectively prevent the oxidized part on the upper surface of the aluminum liquid from entering between the upper mold and the lower mold in advance; The cleaning rotating plate is set to make the cross bar contact with the upper end of the raised plate during the rotation of the gravity casting machine rotating table, thereby pushing the cross bar to move in the direction of the gear. In the process of the movement of the cross bar, the gear can complete a 175° flip under the drive of the cross bar, thereby timely cleaning the inner wall of the casting trough and effectively preventing impurities from adhering to the inner wall of the casting trough; Step III: Reset the rotary table of the gravity casting machine to complete the casting: After the gravity casting is completed, the rotary table of the gravity casting machine is reset under the drive of the power shaft. During this process, the cleaning rotating plate is also reset. After the reset, the upper mold is controlled to move upward to take out the casting; Step IV: Remove and clean the casting shell to prepare for the next casting: Finally, control the limit baffle to rotate to a position that does not block the casting shell, and take out the casting shell. During the process of taking the casting shell out of the positioning frame, the upper end of the opening of the elastic scraper contacts the cleaning rotating plate, and scrapes the impurities attached to the lower end of the cleaning rotating plate into the inside of the casting trough.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, by setting the casting unit and the power unit, the gravity casting machine is driven by rotation, so that the aluminum liquid remaining on the inner wall of the casting shell can be cleaned in time, thereby preventing the aluminum liquid from remaining inside the casting shell, and in the later cleaning process, the aluminum slag attached to the inner wall of the cleaning rotating plate can be cleaned again, which effectively improves the cleaning effect and quality, and can improve the efficiency and quality of subsequent production; 2. In the present invention, the optimization of gravity casting process and mold design significantly improves the quality and precision of aluminum alloy castings. The flexibility of the equipment and the integration of cleaning mechanisms enhance production efficiency, reduce waste, improve economic benefits, and help manufacturers maintain their advantages in the fiercely competitive market; 3. In the present invention, the casting unit and the power unit are matched to dynamically control the casting process, realize precise pouring, ensure the stability and consistency of the casting, and improve the reliability of the casting. The setting of the cleaning mechanism can clean the inner wall of the casting trough in real time to prevent impurities from affecting the casting effect, ensure the cleanliness of the casting process, and reduce subsequent quality problems. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 For the present invention Figure 1 Schematic diagram of the structure at A in the middle; Figure 3 For the present invention Figure 1 Schematic diagram of the structure at B in the middle; Figure 4 For the present invention Figure 1 Schematic diagram of the structure at C in the middle; Figure 5 This is a schematic diagram of the positioning frame structure of the present invention; Figure 6 This is a schematic diagram of the cleaning mechanism structure of the present invention; Figure 7 This is a schematic diagram of the casting shell structure of the present invention; Figure 8 For the present invention Figure 7 Schematic diagram of the structure at point D in the middle.

[0016] In the figure: 1. Rotating table of gravity casting machine; 2. Upper mold; 3. Casting hole; 4. Lower mold; 5. Frame; 6. Power shaft; 7. Raised plate; 8. Power unit; 81. Cross bar; 82. Connecting block; 83. Fixed ring plate; 84. Telescopic spring; 85. Guide rod; 86. Connecting plate; 9. Casting unit; 91. Positioning frame; 92. Supporting bottom plate; 93. Limit baffle; 94. Casting shell; 95. Cleaning mechanism; 951. Cleaning rotating plate; 952. Guide groove; 953. Connecting shaft; 954. Gear; 96. Elastic scraper; 97. Casting trough; 98. Casting port. DETAILED DESCRIPTION

[0017] See also Figure 1-8 , the present invention provides a technical solution: A renewable heat-resistant and high-fatigue casting aluminum alloy casting device and a method for using the same, comprising a gravity casting machine rotating table 1, an upper mold 2, a casting hole 3 and a lower mold 4, wherein a movable upper mold 2 is installed at the upper end of the inner side of the gravity casting machine rotating table 1, a lower mold 4 is provided at the lower end of the upper mold 2, a casting hole 3 is opened on one side of the upper mold 2 and the lower mold 4, a casting unit 9 is installed at the top of the lower mold 4, a power unit 8 is installed on one side of the casting unit 9, a bottom end of one side of the gravity casting machine rotating table 1 is connected to a frame 5 through a power shaft 6, and a raised plate 7 is fixedly connected to one side of the frame 5; the power unit 8 comprises a cross bar 81, and connecting blocks 82 are welded and fixed to the outer sides of both ends of the cross bar 81, and a guide rod 85 is slidably connected to the inner side of the connecting block 82, and a connecting plate 86 is welded and fixed to the top of the guide rod 85, and a protruding plate 7 is fixedly connected to the outer sides of the two ends of the guide rod 85. They are all installed with telescopic springs 84, one end of which is fixedly connected to the fixed ring plate 83; the casting unit 9 includes a positioning frame 91, the bottom end of the positioning frame 91 is fixedly connected to a supporting bottom plate 92 for supporting the casting shell 94, the inside of the positioning frame 91 is fixed with a casting shell 94 through a limit baffle 93, a cleaning mechanism 95 is installed on one side of the upper end of the positioning frame 91, an elastic scraper 96 is welded and fixed to the upper end of one side of the casting shell 94, a casting groove 97 is opened on the inner side of the casting shell 94, and a casting port 98 corresponding to the casting hole 3 is opened on one side of the casting shell 94; the cleaning mechanism 95 includes a cleaning rotating plate 951, one end of the cleaning rotating plate 951 is opened with a guide groove 952, a connecting shaft 953 is installed on the inner side of one end of the cleaning rotating plate 951, and one end of the connecting shaft 953 is fixedly connected to a gear 954.

[0018] As a technical solution for further implementation of this solution, the gravity casting machine rotating table 1 is fixedly connected to the power shaft 6, the power shaft 6 is rotatably connected to the frame 5, the raised plate 7 is rotatably connected to the power shaft 6, the raised plate 7 is welded and fixed to the frame 5, the raised plate 7 is tightly attached to one end of the cross bar 81, and the end of the cross bar 81 tightly attached to the raised plate 7 is arc-shaped. Through the above arrangement, the cross bar 81 can be pushed to move during the rotation of the gravity casting machine rotating table 1; As a further technical solution for the implementation of this scheme, two connecting blocks 82 are provided, the angle between the connecting block 82 and the cross bar 81 is 90°, the cross bar 81 is parallel to the guide bar 85, the end of the connecting plate 86 away from the guide bar 85 is fixedly connected to the lower mold 4, and the angle between the connecting plate 86 and the guide bar 85 is 90°. Through the above arrangement, the cross bar 81 can be stably limited; As a further technical solution for implementing the present invention, two fixed ring plates 83 are provided, the fixed ring plates 83 are fixedly connected to the guide rod 85, the fixed ring plates 83 and the telescopic spring 84 are both arranged on the side of the connecting block 82 away from the connecting plate 86, and one end of the telescopic spring 84 away from the fixed ring plate 83 is fixedly connected to the connecting plate 86. Through the above arrangement, it can be ensured that the cross bar 81 can be reset after moving; As a further technical solution of this solution, the positioning frame 91 is fixedly connected to the lower mold 4, the upper side of the end of the support bottom plate 92 away from the lower mold 4 is arc-shaped, and the center points of the support bottom plate 92 and the positioning frame 91 are arranged on the same vertical line. Through the above arrangement, it is convenient to place the casting shell 94 inside the positioning frame 91; As a technical solution for further implementation of this solution, two limit baffles 93 are provided, and one end of the limit baffle 93 away from the casting shell 94 is rotatably connected to the positioning frame 91 through an axis and a spring spring. Two limit baffles 93 are provided, and the limit baffles 93 are distributed on both sides of the positioning frame 91. Through the above arrangement, the stability of the casting shell 94 placed inside the positioning frame 91 can be ensured, and it is convenient to remove the casting shell 94 from the positioning frame 91 at a later stage; As a further technical solution of this scheme, the elastic scraper 96 is V-shaped, and the elastic scraper 96 is installed at the upper end of the casting port 98. There are two casting ports 98, and the casting ports 98 correspond to the casting holes 3 one by one. The vertical section of the casting groove 97 is semicircular, and the casting groove 97 is connected to the casting port 98. The casting groove 97 is opened in the middle of the casting shell 94, which is convenient for cleaning the bottom of the cleaning rotating plate 951 when the casting shell 94 is taken out from the positioning frame 91; As a further technical solution of this solution, the cleaning rotating plate 951 is arc-shaped at one end away from the connecting shaft 953, the connecting shaft 953 is rotatably connected to the positioning frame 91, one end of the connecting shaft 953 is exposed outside the positioning frame 91, and a gear 954 is installed at one end of the connecting shaft 953 exposed on the positioning frame 91, so that the inside of the casting shell 94 can be stably cleaned; As a further technical solution of this solution, a plurality of tooth grooves are provided on the lower side of one end of the cross bar 81 away from the frame 5, and the cross bar 81 is meshed with the gear 954 through the tooth grooves provided at the lower end, and the center points of the cross bar 81 and the gear 954 are arranged on the same vertical line. Through the above arrangement, the stability of the entire device during operation can be further improved; As a technical solution for further implementation of this scheme, the following steps are included: Step I: pouring aluminum liquid into the casting shell 94 to prepare for casting: the entire equipment is powered on, and the upper mold 2 and the lower mold 4 are controlled to be close to each other, and then aluminum liquid is placed into the casting shell 94. After the aluminum liquid is placed, the casting preparation process is completed; Step II: The power shaft 6 drives the gravity casting machine rotating table 1 to rotate 90° for casting: The power shaft 6 drives the gravity casting machine rotating table 1 to rotate, and the aluminum liquid inside the casting shell 94 enters the casting hole 3 through the casting port 98. In this process: The elastic scraper 96 can effectively prevent the oxidized portion of the upper surface of the aluminum liquid from entering between the upper mold 2 and the lower mold 4 in advance; The cleaning rotating plate 951 is arranged to make the cross bar 81 contact with the upper end of the raised plate 7 during the rotation of the gravity casting machine rotating table 1, thereby pushing the cross bar 81 to move in the direction of the gear 954. In addition, during the movement of the cross bar 81, the gear 954 can complete a 175° flip under the drive of the cross bar 81, thereby timely cleaning the inner wall of the casting trough 97, effectively preventing impurities from adhering to the inner wall of the casting trough 97. Step III: The rotating table 1 of the gravity casting machine is reset to complete the casting: After the gravity casting is completed, the rotating table 1 of the gravity casting machine is reset under the drive of the power shaft 6. During this process, the cleaning rotating plate 951 is also reset. After the reset, the upper mold 2 is controlled to move upward to take out the casting; Step IV: The casting shell 94 is removed and cleaned in preparation for the next casting: Finally, the limit baffle 93 is controlled to rotate to a position where it does not block the casting shell 94, and the casting shell 94 is taken out. During the process of taking the casting shell 94 out of the positioning frame 91, the upper end of the opening of the elastic scraper 96 contacts the cleaning rotating plate 951, and scrapes the impurities attached to the lower end of the cleaning rotating plate 951 into the inside of the casting trough 97.

[0019] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. The above is only a preferred implementation of the present invention. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, ordinary technicians in this technical field can make several improvements, modifications or changes without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the protection scope of the present invention.

Claims

1. A renewable heat-resistant and high fatigue casting aluminum alloy casting device, comprising a gravity casting machine rotating table (1), an upper mold (2), a casting hole (3) and a lower mold (4), characterized in that: A movable upper mold (2) is installed at the upper inner end of the rotary table (1) of the gravity casting machine, a lower mold (4) is provided at the lower end of the upper mold (2), a casting hole (3) is provided on one side of each of the upper mold (2) and the lower mold (4), a casting unit (9) is installed at the top end of the lower mold (4), a power unit (8) is installed on one side of the casting unit (9), a bottom end of one side of the rotary table (1) of the gravity casting machine is connected to a frame (5) via a power shaft (6), and a raised plate (7) is fixedly connected to one side of the frame (5); The power unit (8) comprises a cross bar (81), connecting blocks (82) are welded and fixed to the outer sides of both ends of the cross bar (81), a guide rod (85) is slidably connected to the inner side of the connecting block (82), a connecting plate (86) is welded and fixed to the top of the guide rod (85), and telescopic springs (84) are installed on the outer sides of both ends of the guide rod (85), and one end of the telescopic spring (84) is fixedly connected to the fixed ring plate (83); The casting unit (9) comprises a positioning frame (91), the bottom end of the positioning frame (91) is fixedly connected to a supporting bottom plate (92) for supporting a casting shell (94), the casting shell (94) is fixed inside the positioning frame (91) via a limit baffle (93), a cleaning mechanism (95) is installed on one side of the upper end of the positioning frame (91), an elastic scraper (96) is welded and fixed on the upper end of one side of the casting shell (94), a casting groove (97) is provided inside the casting shell (94), and a casting port (98) corresponding to the casting hole (3) is provided on one side of the casting shell (94); The cleaning mechanism (95) comprises a cleaning rotating plate (951), one end of the cleaning rotating plate (951) being provided with a guide groove (952), a connecting shaft (953) being installed on the inner side of one end of the cleaning rotating plate (951), and one end of the connecting shaft (953) being fixedly connected to a gear (954).

2. A renewable heat-resistant and high fatigue casting aluminum alloy casting device according to claim 1, characterized in that: The gravity casting machine rotating table (1) is fixedly connected to the power shaft (6), the power shaft (6) is rotatably connected to the frame (5), the raised plate (7) is rotatably connected to the power shaft (6), the raised plate (7) is welded and fixed to the frame (5), the raised plate (7) is tightly attached to one end of the cross bar (81), and the end of the cross bar (81) tightly attached to the raised plate (7) is arc-shaped.

3. A renewable heat-resistant and high fatigue casting aluminum alloy casting device according to claim 1, characterized in that: Two connecting blocks (82) are provided, the angle between the connecting blocks (82) and the cross bar (81) is 90°, the cross bar (81) is parallel to the guide bar (85), one end of the connecting plate (86) away from the guide bar (85) is fixedly connected to the lower mold (4), and the angle between the connecting plate (86) and the guide bar (85) is 90°.

4. The renewable heat-resistant and high fatigue casting aluminum alloy casting device according to claim 1 is characterized in that: Two fixed ring plates (83) are provided, and the fixed ring plates (83) are fixedly connected to the guide rod (85). The fixed ring plates (83) and the telescopic spring (84) are both arranged on a side of the connecting block (82) away from the connecting plate (86), and one end of the telescopic spring (84) away from the fixed ring plate (83) is fixedly connected to the connecting plate (86).

5. The renewable heat-resistant and high fatigue casting aluminum alloy casting device according to claim 1, characterized in that: The positioning frame (91) is fixedly connected to the lower mold (4); the upper side of one end of the supporting bottom plate (92) away from the lower mold (4) is arc-shaped; and the center points of the supporting bottom plate (92) and the positioning frame (91) are arranged on the same vertical line.

6. The renewable heat-resistant and high fatigue casting aluminum alloy casting device according to claim 1, characterized in that: Two limit baffles (93) are provided, and one end of the limit baffle (93) away from the casting shell (94) is rotatably connected to the positioning frame (91) through a shaft and a spring spring. Two limit baffles (93) are provided, and the limit baffles (93) are distributed on both sides of the positioning frame (91).

7. The renewable heat-resistant and high fatigue casting aluminum alloy casting device according to claim 1 is characterized in that: The elastic scraper (96) is V-shaped and is mounted on the upper end of the casting port (98). Two casting ports (98) are provided, and the casting ports (98) correspond to the casting holes (3) one by one. The vertical section of the casting groove (97) is semicircular, and the casting groove (97) is connected to the casting port (98). The casting groove (97) is opened in the middle of the casting shell (94).

8. The renewable heat-resistant and high fatigue casting aluminum alloy casting device according to claim 1, characterized in that: One end of the cleaning rotating plate (951) away from the connecting shaft (953) is arc-shaped, the connecting shaft (953) is rotationally connected to the positioning frame (91), one end of the connecting shaft (953) is exposed outside the positioning frame (91), and a gear (954) is installed at the end of the connecting shaft (953) exposed on the positioning frame (91).

9. The renewable heat-resistant and high fatigue casting aluminum alloy casting device according to claim 1, characterized in that: A plurality of tooth grooves are provided on the lower side of one end of the cross bar (81) away from the frame (5); the cross bar (81) is meshed with the gear (954) through the tooth grooves provided at the lower end; and the center points of the cross bar (81) and the gear (954) are arranged on the same vertical line.

10. A method for using a renewable heat-resistant and high fatigue casting aluminum alloy casting device according to any one of claims 1 to 9, characterized in that: The method comprises the following steps: Step I: pouring aluminum liquid into the casting shell (94) to prepare for casting: the entire device is powered on, and the upper mold (2) and the lower mold (4) are controlled to be in close contact, and then aluminum liquid is placed into the casting shell (94). After the aluminum liquid is placed, the casting preparation process is completed; Step II: The power shaft (6) drives the gravity casting machine rotating table (1) to rotate 90 degrees to perform casting: The power shaft (6) drives the gravity casting machine rotating table (1) to rotate. At this time, the aluminum liquid inside the casting shell (94) enters the casting hole (3) through the casting port (98). During this process: The elastic scraper (96) can effectively prevent the oxidized portion of the upper surface of the aluminum liquid from entering between the upper mold (2) and the lower mold (4) in advance. The cleaning rotating plate (951) is arranged so that the cross bar (81) contacts the upper end of the raised plate (7) during the rotation of the gravity casting machine rotating table (1), thereby pushing the cross bar (81) to move in the direction of the gear (954). In addition, during the movement of the cross bar (81), the gear (954) can complete a 175° flip under the drive of the cross bar (81), thereby timely cleaning the inner wall of the casting trough (97), effectively preventing impurities from adhering to the inner wall of the casting trough (97); Step III: The gravity casting machine rotating table (1) is reset to complete the casting: After the gravity casting is completed, the gravity casting machine rotating table (1) is reset under the drive of the power shaft (6). During this process, the cleaning rotating plate (951) is also reset. After the reset, the upper mold (2) is controlled to move upward to take out the casting; Step IV: The casting shell (94) is removed and cleaned to prepare for the next casting: Finally, the limit baffle (93) is controlled to rotate to a position that does not block the casting shell (94), and the casting shell (94) is removed. During the process of removing the casting shell (94) from the positioning frame (91), the upper end of the opening of the elastic scraper (96) contacts the cleaning rotating plate (951) and scrapes the impurities attached to the lower end of the cleaning rotating plate (951) into the inside of the casting trough (97).

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