An automatic vacuum casting machine

Abstract

The application discloses an automatic vacuum casting machine and relates to the field of casting machines, and aims to solve the problem that mixing and casting cannot be simultaneously performed and the casting period is long in the prior art.The technical scheme is that a plurality of raw material tanks are arranged on a conversion mechanism, raw materials can be continuously provided by converting the raw material tanks, a stirring bin and a buffer bin are arranged in a mixing tank, the casting material in the stirring bin can be sent into the buffer bin for buffering after being stirred, and the casting material can be gradually poured into a mold, the material in the stirring bin can be continuously stirred during the buffering process, the material preparation and the casting can be simultaneously performed, the operation period is shortened, and the pouring time is saved.

Description

Technical Field

[0001] This invention relates to the field of casting machines, specifically an automatic vacuum casting machine. Background Technology

[0002] Vacuum casting technology refers to the evolution of raw material casting from atmospheric pressure molding to vacuum molding. Vacuum casting allows air bubbles in the casting material to be expelled more easily, significantly improving both the internal and external quality of the finished product, thereby promoting the development of power transmission and transformation technology.

[0003] Chinese patent CN201611030798.X discloses an automatic vacuum casting machine. The technical solution adopted is that it mainly consists of a metering component, a mixing component, a stirring component, and a casting component. The metering pump used in the automatic vacuum casting machine comprises a servo motor, a ball screw, a metering lever, a cylinder, a metering lever support sleeve, a discharge cylinder, a valve needle, a piston, a discharge valve cylinder, a discharge valve, a Y-type sealing ring, an O-type sealing ring, a self-made polytetrafluoroethylene sealing ring, and gaskets, etc.

[0004] Chinese patent CN201720042386.1 discloses an automatic vacuum casting machine. The technical solution includes a casting mechanism and a pouring mechanism. The casting mechanism is located on both sides of the casting machine; the casting mechanisms on both sides have identical symmetrical structures; the casting mechanism is connected to the pouring mechanism; the casting mechanism includes a metering mechanism, a mixing mechanism, a stirring mechanism, a servo motor, a vacuum pump, and an air compressor; the metering mechanism includes a metering pump and a metering lever; the servo motor is connected to a ball screw to drive the metering lever; the metering lever drives the mixing mechanism; the stirring mechanism, metering mechanism, and mixing mechanism are located inside a material tank; the stirring mechanism is connected to an AC motor, which drives the stirring blades to rotate; the pouring mechanism includes a pouring chamber, ... The system includes a pouring head, a pouring head opening cylinder, and a pouring head lowering cylinder. The pouring head is located inside the pouring chamber. The pouring head is connected to the pouring mechanism via the pouring head lowering cylinder. A mold tray is located below the pouring chamber. The mold tray is connected to a stepper motor, which drives the mold tray to move. When the servo motor operates, the plunger and cylinder move upward, forming a cavity below the discharge valve cylinder. The mixed material enters the discharge valve cylinder through the inlet and then through the hole on the hollow piston rod into the hollow piston rod. When the cylinder actuates, the material enters the cavity. After the cavity is filled with material, the cylinder actuates again. At this time, the servo motor reverses, and the plunger and cylinder press down on the material inside the cavity, creating pressure inside the cavity. This pressure is then compressed by the steel ball spring, causing it to contract. The discharge valve core opens, and material discharge begins. Once the material discharge is complete, the pressure is released, the spring returns to its original position, and the discharge valve core closes.

[0005] Vacuum casting machines reduce the generation of air bubbles and improve product quality by evacuating the mixing chamber. However, existing vacuum casting machines are all intermittent mixing machines, meaning that after the material is mixed, it must be poured before subsequent mixing operations can be carried out. This process takes up a lot of time and results in a long production cycle. Summary of the Invention

[0006] In view of the problems existing in the prior art, the present invention discloses an automatic vacuum casting machine. The technical solution adopted includes a mixing chamber, a vacuum pump, a first vacuum tube, a feed pipe, a raw material tank, a mold, a casting chamber, a motor, and a control circuit. The mixing chamber has a mixing mechanism, and the mixing chamber is connected to the outlet pipe of the raw material tank through the feed pipe. The outlet pipe has a solenoid valve. The mixing chamber is connected to the vacuum pump through the first vacuum tube. The casting chamber is located below the mixing chamber. A mold plate is shaft-connected inside the casting chamber. The mold is on the mold plate and is driven by the motor. The control circuit contains a microprocessor. The microprocessor and the... The mixing mechanism, the solenoid valve, the vacuum pump, and the motor are electrically connected. It also includes a mixing tank and a conversion mechanism. The upper part of the mixing tank is the mixing chamber, and the lower part is the buffer chamber. The buffer chamber is connected to the first vacuum tube via a second vacuum tube. A transfer pipe connects the mixing chamber and the buffer chamber, and a transfer valve is installed on the transfer pipe. The uniformly mixed casting material in the mixing chamber can enter the buffer chamber through the transfer pipe, thus facilitating the continued mixing of the next batch of material in the mixing chamber. This allows for simultaneous mixing with the casting operation in the buffer chamber, resulting in a smaller single mixing volume, easier material mixing, and continuous batching, saving time. The mixing mechanism has two... The mixing paddles are located in two separate chambers: one in the mixing chamber and the other in the buffer chamber. Both paddles are driven by a mixing motor. The paddle in the mixing chamber thoroughly mixes the material, while the paddle in the buffer chamber maintains a uniform material state. A casting chamber is installed outside the buffer chamber. A discharge pipe with a discharge valve is located below the buffer chamber. The mold and the discharge pipe are positioned correspondingly, allowing casting to proceed through the discharge pipe. A flow meter on the inlet pipe monitors the amount of raw material entering the mixing chamber. Multiple raw material tanks are mounted on a switching mechanism, which allows switching between the tanks connected to the mixing chamber to maintain mixing. The silo continuously supplies material or changes the type of material supplied. A third vacuum tube is connected to the casting silo, and the third vacuum tube is connected to the second vacuum tube. The first vacuum tube, the second vacuum tube, and the third vacuum tube are connected. The vacuum pump can simultaneously evacuate the mixing silo, the buffer silo, and the casting silo. There is a vacuum valve on the third vacuum tube, and there is a silo door on the casting silo. The silo door and the mold plate are positioned correspondingly. After the mold on the mold plate is filled, the silo door can be opened to change the mold. At this time, the closed vacuum valve can maintain the vacuum level of the mixing silo and the buffer silo when the silo door is opened. The transfer valve, the vacuum valve, and the discharge valve are solenoid valves, all of which are electrically connected to the microprocessor.

[0007] As a preferred embodiment of the present invention, the conversion mechanism includes a mounting frame and a connecting plate. The mounting frame has a circular hole at its center, and a turntable is slidably connected inside the circular hole. Above the turntable is a rotary drive mechanism that drives the turntable to rotate within the circular hole. Below the turntable are multiple connecting plates arranged in a circular array on the turntable. The raw material tank is connected to the connecting plates. The rotation of the turntable drives the raw material tank to rotate. The mounting frame is also equipped with an identification mechanism that can identify the material information of the raw material tank currently connected to the mixing chamber. The rotary drive mechanism and the identification mechanism are electrically connected to the microprocessor.

[0008] As a preferred embodiment of the present invention, the rotary drive mechanism includes a conversion gear and a conversion motor. The conversion gear is connected to the turntable, and the output end of the conversion motor is equipped with a gear. The gear meshes with the conversion gear. The conversion motor is electrically connected to the microprocessor. The rotation of the conversion motor can drive the gear to rotate, thereby driving the conversion gear to rotate. The conversion gear can drive the turntable to rotate.

[0009] As a preferred embodiment of the present invention, the turntable has a flange on its vertical side, and the inner side of the circular hole of the mounting bracket has a groove that corresponds to the position of the flange and matches its size. The flange and the groove can prevent the turntable from falling off the mounting bracket. There is a ball between the flange and the groove, and there are grooves on the groove and the flange for the ball to roll. The ball rolling in the groove can reduce the friction between the flange and the groove.

[0010] As a preferred embodiment of the present invention, the groove has a bead groove, a limiting bead is slidably connected in the bead groove, a compression spring is press-fitted between the limiting bead and the bead groove, and the flange has a limiting groove that corresponds to the position and size of the limiting bead and corresponds to the position of the raw material tank; the limiting bead and the limiting groove can limit the turntable after it rotates to the expected position, preventing it from rotating abnormally, and facilitating the subsequent docking between the outlet pipe and the feed pipe.

[0011] As a preferred embodiment of the present invention, the identification mechanism includes a first barcode scanner, a second barcode scanner, and a barcode. The first barcode scanner and the second barcode scanner are connected to the mounting frame via an extension plate. The barcode corresponds one-to-one with the raw material tank. The material and its density information in the raw material tank are recorded on the barcode and correspond to the positions of the first barcode scanner and the second barcode scanner. The barcode rotates with the raw material tank. The first barcode scanner is used to identify the raw material tank information corresponding to the current position of the feed pipe when the switching mechanism switches the raw material tank. The second barcode scanner is used to identify the information of the material being added when adding material to the mixing chamber. The first barcode scanner and the second barcode scanner are electrically connected to the microprocessor.

[0012] As a preferred embodiment of the present invention, it further includes a connecting plate and a hydraulic cylinder. The connecting plate is connected to all the raw material tanks on the conversion mechanism via a connecting rod and a clamp. The connecting plate is connected to the mounting frame via the hydraulic cylinder, and the connecting plate and the hydraulic cylinder are axially connected. The raw material tanks and the connecting plate are movably connected. The hydraulic cylinder is connected to a hydraulic drive mechanism, which is a conventional hydraulic drive mechanism. By controlling the extension and retraction of the hydraulic cylinder, the lifting and lowering of the raw material tanks can be controlled, thereby controlling the docking and separation of the outlet pipe and the feed pipe. The hydraulic drive mechanism is electrically connected to the microprocessor.

[0013] As a preferred embodiment of the present invention, the raw material tank and the connecting plate are connected by a telescopic plate.

[0014] The beneficial effects of the present invention are as follows: By setting up multiple raw material tanks and placing them on the conversion mechanism, the present invention can continuously supply raw materials through the conversion of raw material tanks. The mixing tank is equipped with a mixing chamber and a buffer chamber. After the casting material is mixed in the mixing chamber, it is sent to the buffer chamber for buffering and then gradually poured into the mold. During the buffering process, the material can continue to be mixed in the mixing chamber, so that the material preparation and pouring can be carried out simultaneously, shortening the operation cycle and saving pouring time.

[0015] Furthermore, multiple raw material tanks can supply a variety of different materials to the mixing chamber even when the number of feed pipes in the mixing chamber is limited, thus increasing the applicability of the equipment.

[0016] Furthermore, the mixing mechanism is equipped with two mixing blades, which can be driven by one mixing motor to mix the materials in the mixing chamber and maintain the uniformity of the materials in the buffer chamber. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention;

[0018] Figure 2 This is a schematic diagram of the conversion mechanism structure of the present invention;

[0019] Figure 3 This is a schematic diagram of the mounting frame structure of the present invention;

[0020] Figure 4 This is a schematic diagram of the connection structure between the mounting bracket and the turntable of the present invention;

[0021] Figure 5 This is a schematic diagram of the connecting disk structure of the present invention.

[0022] In the diagram: 1. Mixing tank; 101. Agitator; 102. Buffer tank; 2. Vacuum pump; 3. First vacuum tube; 4. Second vacuum tube; 5. Feed pipe; 6. Flow meter; 7. Transfer valve; 8. Raw material tank; 9. Conversion mechanism; 10. Discharge pipe; 11. Mold plate; 12. Mold; 13. Casting tank; 14. Motor; 15. Connecting plate; 16. Mounting bracket; 17. Conversion gear; 18. Conversion motor; 19. Hydraulic cylinder; 20. Connecting plate; 21. Telescopic plate; 22. Extension plate; 23. First barcode scanner; 24. Second barcode scanner; 25. Turntable; 26. Limiting bead; 27. Compression spring. Detailed Implementation

[0023] The technical solution of the present invention will now be clearly and completely described in conjunction with the accompanying drawings. In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0025] Example 1

[0026] like Figures 1 to 5As shown, this invention discloses an automatic vacuum casting machine. The technical solution includes a mixing chamber 101, a vacuum pump 2, a first vacuum tube 3, a feed pipe 5, a raw material tank 8, a mold 12, a casting chamber 13, a motor 14, and a control circuit. The mixing chamber 101 contains a mixing mechanism and is connected to the outlet pipe of the raw material tank 8 via the feed pipe 5. The outlet pipe has a solenoid valve. The mixing chamber 101 is connected to the vacuum pump 2 via the first vacuum tube 3. The casting chamber 13 is located below the mixing chamber 101. A mold plate 11 is shaft-connected to the inner shaft of the casting chamber 13. The mold 12 is mounted on the mold plate 11, which is driven by the motor 14. The control circuit includes a microprocessor, which is electrically connected to the stirring mechanism, the solenoid valve, the vacuum pump 2, and the motor 14. It also includes a mixing tank 1 and a conversion mechanism 9. The upper part of the mixing tank 1 is the stirring chamber 101, and the lower part is the buffer chamber 102. The buffer chamber 102 is connected to the first vacuum tube 3 via a second vacuum tube 4. A transfer pipe connects the stirring chamber 101 and the buffer chamber 102, and a transfer valve 7 is installed on the transfer pipe. The stirring rod of the stirring mechanism is equipped with two stirring paddles, one inside the stirring chamber 101 and the other inside the buffer chamber 102. The casting chamber 13 is installed outside the buffer chamber 102. The raw material tank 8... The raw materials enter the mixing chamber 101 through the outlet pipe and the feed pipe 5. The agitator mixes the raw materials, and the uniformly mixed material enters the buffer chamber 102 through the transfer pipe. The mixing chamber 101 is also filled with casting material. Below the buffer chamber 102 is the discharge pipe 10, which has a discharge valve. The mold 12 and the discharge pipe 10 are positioned correspondingly, and the discharge pipe 10 can inject the material in the buffer chamber 102 into the mold. The feed pipe 5 has a flow meter 6, which can detect the amount of material entering the mixing chamber 101 through the feed pipe 5. There are 6 raw material tanks 8, which are mounted on the conversion mechanism 9. The casting chamber 13... A third vacuum tube is connected to the upper part, which is connected to the second vacuum tube 4. The third vacuum tube has a vacuum valve. The casting chamber 13 has a chamber door, which corresponds to the position of the mold plate 11. After the mold 12 is filled, the vacuum valve is closed, the chamber door is opened to replace the mold 12, the chamber door is closed, and the vacuum valve is reopened. The transfer valve 7, the vacuum valve, and the discharge valve are solenoid valves, all of which are electrically connected to the microprocessor.

[0027] As a preferred embodiment of the present invention, the conversion mechanism 9 includes a mounting frame 16 and a connecting plate 20. The mounting frame 16 has a circular hole in the center, and a turntable 25 is slidably connected in the circular hole. A rotary drive mechanism is located above the turntable 25, and six connecting plates 20 are located below it. The connecting plates 20 are arranged in a circular array on the turntable 25. The raw material tank 8 is connected to the connecting plate 20. The mounting frame 16 is also equipped with an identification mechanism. The rotary drive mechanism drives the turntable 25 to rotate. The turntable 25 continuously switches the relative positions of different raw material tanks 8 and feed pipes 5 through the connecting plates 20. When the identification mechanism identifies that the raw material tank 8 corresponding to the required raw material has reached above the feed pipe 5, the rotary drive mechanism stops working. The rotary drive mechanism and the identification mechanism are electrically connected to the microprocessor.

[0028] As a preferred embodiment of the present invention, the rotary drive mechanism includes a conversion gear 17 and a conversion motor 18. The conversion gear 17 is connected to the turntable 25, and the output end of the conversion motor 18 is equipped with a gear that meshes with the conversion gear 17. The conversion motor 18 is electrically connected to the microprocessor, and the conversion motor 18 drives the turntable 25 to rotate through the meshing gear set.

[0029] As a preferred embodiment of the present invention, the turntable 25 has a flange on its vertical side, and the inner side of the circular hole of the mounting bracket 16 has a groove that corresponds to the position of the flange and matches its size. There is a ball between the flange and the groove, and there are grooves on the groove and the flange for the ball to roll. The flange can reduce the friction between the two by rotating the ball in the groove.

[0030] As a preferred embodiment of the present invention, the groove has a bead groove, and a limiting bead 26 is slidably connected in the bead groove. A compression spring 27 is press-fitted between the limiting bead 26 and the bead groove. The flange has a limiting groove that corresponds to the position and size of the limiting bead 26. The limiting groove corresponds to the position of the raw material tank 8. By allowing the limiting bead 26 to enter the limiting groove, the turntable 25 can be limited when the raw material tank 8 rotates to the working position.

[0031] As a preferred embodiment of the present invention, the identification mechanism includes a first barcode scanner 23, a second barcode scanner 24, and a barcode. The first barcode scanner 23 and the second barcode scanner 24 are connected to the mounting frame 16 via an extension plate 22. The barcode corresponds one-to-one with the raw material tank 8 and is positioned corresponding to the first barcode scanner 23 and the second barcode scanner 24. The barcode rotates with the raw material tank 8. The first barcode scanner 23 and the second barcode scanner 24 are electrically connected to the microprocessor.

[0032] As a preferred embodiment of the present invention, it further includes a connecting plate 15 and a hydraulic cylinder 19. The connecting plate 15 is connected to all the raw material tanks 8 on the conversion mechanism 9 via a connecting rod and a clamp. The connecting plate 15 is connected to the mounting bracket 16 via the hydraulic cylinder 19, and the connecting plate 15 and the hydraulic cylinder 19 are axially connected. The raw material tanks 8 and the connecting plate 20 are movably connected. The hydraulic cylinder 19 is connected to a hydraulic drive mechanism. The extension and retraction of the hydraulic cylinder 19 can control the lifting and lowering of the raw material tanks 8. After the raw material tank 8 is raised, the outlet pipe is separated from the feed pipe 5. At this time, the raw material tank 8 is switched by the conversion mechanism 9. When the first barcode scanner 23 identifies the required material information, the conversion motor stops working, the hydraulic cylinder 19 extends, and the outlet pipe of the current raw material tank 8 is connected to the feed pipe 5. The second barcode scanner 24 can identify the material information in the raw material tank 8 currently connected to the feed pipe 5. The hydraulic drive mechanism is electrically connected to the microprocessor.

[0033] As a preferred embodiment of the present invention, the raw material tank 8 and the connecting plate 20 are connected by a telescopic plate 21.

[0034] The working principle of this invention is as follows: The material in the raw material tank 8 enters the mixing chamber 101 through the feed pipe 5. The flow meter 6 can detect the amount of material entering. If weight information is required, the type and density information of the material in the raw material tank 8 can be obtained by scanning the barcode on the raw material tank 8 through the second barcode scanner 24. During the process of the raw material entering the mixing chamber 101, the vacuum pump 2 can evacuate the mixing chamber 101, the buffer chamber 102 and the casting chamber 13 through the first vacuum pipe 3, the second vacuum pipe 4 and the third vacuum pipe, thereby preventing the formation of air bubbles in the casting material. After the mixing is completed, the microprocessor opens the transfer valve 7, and the mixed casting material enters the buffer chamber 102 through the transfer pipe for buffering. The mixing chamber 101 can continue to prepare the next batch of material. The microprocessor opens the discharge valve, and the casting material in the buffer chamber 102 is poured into the mold 12 through the discharge pipe 10. The motor 14 drives the mold plate 11 to rotate, which can switch the casting mold. After the mold 12 on the mold plate 11 is filled, the vacuum valve can be closed, the chamber door of the casting chamber 13 can be opened, and the mold 12 on the mold plate 11 can be replaced.

[0035] When it is necessary to switch the raw material tank 8, the microprocessor controls the hydraulic cylinder 19 to shorten, which raises the raw material tank 8 through the connecting plate 15. The telescopic plate 21 shortens, and the outlet pipe separates from the feed pipe 5. At this time, the first barcode scanner 23 is positioned opposite the barcode, and the conversion motor 18 rotates. The conversion motor 18 drives the conversion gear to rotate, thereby rotating the turntable 25. The turntable 25 squeezes the limiting bead 26, causing it to enter the bead groove and compress the compression spring 27. When the first barcode scanner 23 detects the barcode of the raw material tank 8 corresponding to the material to be added, the conversion motor 18 stops rotating, and the limiting bead 26 enters the limiting groove under the action of the compression spring 27 for limiting. The hydraulic cylinder 19 extends, causing the raw material tank 8 to descend, and the outlet pipe enters the feed pipe 5, completing the replacement of the raw material tank 8.

[0036] The microprocessor involved in this invention uses an Atmel 89C51 microcontroller to start and stop motors, analyze data, and control valve opening and closing. Those skilled in the art can obtain technical inspiration for the pinout and connection method of the 89C51 by referring to textbooks or technical manuals published by the manufacturer. The circuit connection involved in this invention is a common method used by those skilled in the art, and technical inspiration can be obtained through a limited number of experiments. It is common knowledge.

[0037] Components not described in detail in this article are existing technologies.

[0038] While the specific embodiments of the present invention have been described in detail above, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention, and modifications or variations without creative effort are still within the protection scope of the present invention.

Claims

1. An automatic vacuum casting machine, comprising a mixing chamber (101), a vacuum pump (2), a first vacuum tube (3), a feed pipe (5), a raw material tank (8), a mold (12), a casting chamber (13), a motor (14), and a control circuit, wherein the mixing chamber (101) has a mixing mechanism, and the mixing chamber (101) is connected to the outlet pipe of the raw material tank (8) through the feed pipe (5), the outlet pipe having a solenoid valve, the mixing chamber (101) is connected to the vacuum pump (2) through the first vacuum tube (3), the casting chamber (13) is located below the mixing chamber (101), a mold plate (11) is axially connected inside the casting chamber (13), the mold (12) is on the mold plate (11), the mold plate (11) is driven by the motor (14), the control circuit has a microprocessor, the microprocessor is electrically connected to the mixing mechanism, the solenoid valve, the vacuum pump (2), and the motor (14), characterized in that: It also includes a mixing tank (1) and a conversion mechanism (9). The upper part of the mixing tank (1) is the mixing chamber (101), and the lower part is the buffer chamber (102). The buffer chamber (102) is connected to the first vacuum tube (3) through the second vacuum tube (4). A transfer pipe is connected between the mixing chamber (101) and the buffer chamber (102). A transfer valve (7) is installed on the transfer pipe. The stirring rod of the stirring mechanism is equipped with two stirring paddles, one in the mixing chamber (101) and the other in the buffer chamber (102). The casting chamber (13) is installed outside the buffer chamber (102). There is a discharge pipe (10) below the buffer chamber (102). The discharge pipe (10) has a discharge valve, and the mold (12) and the discharge pipe (10) are positioned correspondingly; the feed pipe (5) has a flow meter (6); there are multiple raw material tanks (8) and they are mounted on the conversion mechanism (9); the casting chamber (13) is connected to a third vacuum tube, which is connected to the second vacuum tube (4), and the third vacuum tube has a vacuum valve; the casting chamber (13) has a chamber door, which is positioned correspondingly to the mold plate (11); the transfer valve (7), the vacuum valve, and the discharge valve are solenoid valves and are all electrically connected to the microprocessor; the conversion mechanism (9) includes a mounting bracket (16) and a connecting... The mounting bracket (16) has a circular hole in the center of the plate (20), and a turntable (25) is slidably connected in the circular hole. A rotary drive mechanism is located above the turntable (25), and multiple connecting plates (20) are located below it. The raw material tank (8) is connected to the connecting plates (20). The connecting plates (20) are arranged in a circular array on the turntable (25). An identification mechanism is also installed on the mounting bracket (16). The rotary drive mechanism and the identification mechanism are electrically connected to the microprocessor. The rotary drive mechanism includes a conversion gear (17) and a conversion motor (18). The conversion gear (17) is connected to the turntable (25), and the conversion motor (18) is connected to the turntable (25). The output end is equipped with a gear, which meshes with the conversion gear (17). The conversion motor (18) is electrically connected to the microprocessor. The identification mechanism includes a first barcode scanner (23), a second barcode scanner (24), and a barcode. The first barcode scanner (23) and the second barcode scanner (24) are connected to the mounting bracket (16) through an extension plate (22). The barcode corresponds one-to-one with the raw material tank (8) and is positioned corresponding to the first barcode scanner (23) and the second barcode scanner (24). The barcode rotates with the raw material tank (8). The first barcode scanner (23) and the second barcode scanner (24) are electrically connected to the microprocessor.

2. The automatic vacuum casting machine according to claim 1, characterized in that: The turntable (25) has a flange on its vertical side. The inner side of the circular hole of the mounting bracket (16) has a groove that corresponds to the position of the flange and matches its size. There are balls between the flange and the groove, and there are grooves on the groove and the flange for the balls to roll.

3. An automatic vacuum casting machine according to claim 2, characterized in that: The groove contains a bead groove, and a limiting bead (26) is slidably connected in the bead groove. A compression spring (27) is press-fitted between the limiting bead (26) and the bead groove. The flange has a limiting groove that corresponds to the position of the limiting bead (26) and matches its size. The limiting groove corresponds to the position of the raw material tank (8).

4. An automatic vacuum casting machine according to claim 1, characterized in that: It also includes a connecting plate (15) and a hydraulic cylinder (19). The connecting plate (15) is connected to all the raw material tanks (8) on the conversion mechanism (9) through a connecting rod and a clamp. The connecting plate (15) is connected to the mounting bracket (16) through the hydraulic cylinder (19). The connecting plate (15) and the hydraulic cylinder (19) are axially connected. The raw material tanks (8) and the connecting plate (20) are movably connected. The hydraulic cylinder (19) is connected to a hydraulic drive mechanism. The hydraulic drive mechanism is electrically connected to the microprocessor.

5. An automatic vacuum casting machine according to claim 4, characterized in that: The raw material tank (8) and the connecting plate (20) are connected by a telescopic plate (21).

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