Vacuum operation box for aluminum alloy 3D printing

Abstract

The utility model discloses a vacuum operation box for aluminum alloy 3D printing. The vacuum operation box comprises a vacuum chamber, a three-dimensional driving mechanism is installed in the vacuum chamber, a printing platform mechanism is installed in the three-dimensional driving mechanism, the upper end of the vacuum chamber is fixedly connected with a main vacuum pump, and the input end of the main vacuum pump is fixedly connected with a main exhaust pipe; the printing platform mechanism is composed of a platform body, sealing columns, a base, a material collecting box, an electric push rod, a baffle and supporting rods, a plurality of discharging holes are formed in the surface of the platform body at equal intervals, the multiple supporting rods are fixedly connected to the bottom of the material collecting box at equal intervals, and the sealing columns are fixedly connected to the upper ends of the supporting rods correspondingly. And the electric push rod drives the material collecting box to descend after material printing is completed, so that the sealing column leaves the discharging hole to open the discharging hole, redundant aluminum powder on the surface of the platform falls into the material collecting box to be collected, and the aluminum powder recycling efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to 3D printing formula additive manufacturing equipment technical field, specifically is a kind of aluminium alloy 3D printing vacuum operation box. BACKGROUND

[0002] Aluminum alloy 3D printing technology is a method based on additive manufacturing, which builds objects by layering metal powder. Compared with traditional aluminum alloy processing methods, 3D printing can achieve more complex geometric structures and personalized customization. This technology not only reduces waste generation and improves production efficiency, but also brings more innovation and flexibility to the manufacturing industry.

[0003] After printing is completed, there will be a large amount of aluminum powder left on the platform surface. Before taking out the printed object, the remaining aluminum powder needs to be cleaned and collected for next use. However, the particle size of aluminum powder is small, and it is easy to float in the air during cleaning, which can cause harm to the human body if inhaled. INVENTION CONTENTS

[0004] The utility model aims at providing a kind of aluminium alloy 3D printing vacuum operation box, can collect the excess aluminum powder in operation box after printing is completed, avoid being inhaled by human body, cause harm to the body of operator.

[0005] In order to achieve the above object, a kind of vacuum operating box for aluminum alloy 3D printing is provided, including vacuum chamber, three-dimensional drive mechanism is installed in the vacuum chamber, printing platform mechanism is installed in the three-dimensional drive mechanism, the upper end of the vacuum chamber is fixedly connected with main vacuum pump, the input end of the main vacuum pump is fixedly connected with main air exhaust pipe, and the other end of main air exhaust pipe is fixedly connected to the upper end of the vacuum chamber and is communicated with the inside of vacuum chamber;The printing platform mechanism is composed of platform main body, sealing column, base, material collecting box, electric push rod, baffle and support rod, the middle part of the two side ends of base is fixedly connected with three-dimensional drive mechanism respectively, the baffle is U-shaped structure and is fixedly connected to the upper end of base, material collecting box is arranged in baffle and is slidably connected with the inner wall of baffle, and material collecting box is provided with upward opening, the electric push rod is fixedly connected to the lower end of base, and the output end of electric push rod is upwardly through base, the output end of electric push rod is fixedly connected with the lower end of material collecting box, the platform main body is fixedly connected to the upper end of baffle, and the size of platform main body and base is same, the surface of platform main body is provided with several discharge holes equidistantly, and discharge hole is located in the opening range of material collecting box, support rod is provided with several and is equidistantly fixedly connected to the bottom of material collecting box, and the upper end of support rod and the upper end of material collecting box are at the same height, the sealing column is fixedly connected to the upper end of support rod respectively, and sealing column is slidably connected with the side wall of discharge hole, the thickness of discharge hole is same with the height of sealing column.

[0006] According to the vacuum operating box for aluminum alloy 3D printing, the three-dimensional driving mechanism is composed of a first motor, a second motor, a Y-axis driving guide rail, a sliding block, a lead screw, a Y-axis supporting guide rail, an X-axis driving guide rail, an X-axis supporting guide rail, a laser / electron beam gun head, a Z-axis driving guide rail and a third motor, the Y-axis driving guide rail and the Y-axis supporting guide rail are fixedly connected to the inner walls of the vacuum chamber on the two sides respectively, and the upper and lower ends of the Y-axis driving guide rail and the Y-axis supporting guide rail are fixedly connected to the inner walls of the vacuum chamber respectively, the sliding block is arranged in the Y-axis driving guide rail, the Y-axis supporting guide rail, the X-axis driving guide rail, the X-axis supporting guide rail and the Z-axis driving guide rail respectively, and the sliding block is slidably connected to the inner walls of the Y-axis driving guide rail, the Y-axis supporting guide rail, the X-axis driving guide rail, the X-axis supporting guide rail and the Z-axis driving guide rail respectively, the lead screw is arranged in the middle of the inner walls of the Y-axis driving guide rail, the X-axis driving guide rail and the Z-axis driving guide rail respectively, and the lead screw is rotatably connected to the Y-axis driving guide rail, the X-axis driving guide rail and the Z-axis driving guide rail respectively, the lead screw in the Y-axis driving guide rail, the X-axis driving guide rail and the Z-axis driving guide rail penetrates through the middle of the corresponding sliding block and is threadedly connected with the sliding block, the first motor is fixedly connected to the upper end of the vacuum chamber, and the output end of the first motor penetrates through the vacuum chamber, the output end of the first motor is fixedly connected to the upper end of the lead screw in the Y-axis driving guide rail, and the sliding blocks in the Y-axis driving guide rail and the Y-axis supporting guide rail are located in the middle of the two side ends of the base and are fixedly connected with the base, the X-axis driving guide rail and the X-axis supporting guide rail are fixedly connected to the inner wall top end of the vacuum chamber, and the Y-axis driving guide rail and the Y-axis supporting guide rail are located in the middle of the X-axis driving guide rail and the X-axis supporting guide rail, the opening of the X-axis driving guide rail and the X-axis supporting guide rail faces downward, one end of the lead screw in the X-axis driving guide rail is fixedly connected with the output end of the second motor, and the second motor is fixedly connected to the outer side end of the vacuum chamber, the Z-axis driving guide rail is arranged at the lower end of the X-axis driving guide rail and the X-axis supporting guide rail, and the sliding blocks in the X-axis driving guide rail and the X-axis supporting guide rail are fixedly connected with the upper end of the Z-axis driving guide rail respectively, the opening of the Z-axis driving guide rail faces downward, the lower end of the sliding block in the Z-axis driving guide rail is fixedly connected with the laser / electron beam gun head, the third motor is fixedly connected to one end of the Z-axis driving guide rail, and the output end of the third motor penetrates through the Z-axis driving guide rail and is fixedly connected with the lead screw in the Z-axis driving guide rail. The Y-axis driving guide rail adjusts the height of the platform on which the aluminum powder is placed, and the X-axis driving guide rail and the Z-axis driving guide rail cooperate to realize the printing of the laser / electron beam gun head on the object.

[0007] According to the vacuum operating box for aluminum alloy 3D printing, the back of the vacuum chamber is fixedly connected with an auxiliary vacuum pump, the input end of the auxiliary vacuum pump is fixedly connected with an auxiliary air exhaust pipe, the other end of the auxiliary air exhaust pipe is fixedly connected with the vacuum chamber and communicates with the inside of the vacuum chamber, and the output end of the auxiliary vacuum pump is fixedly connected with a connecting pipe, and the other end of the connecting pipe is fixedly connected with the air exhaust pipe and communicates with the air exhaust pipe. The auxiliary vacuum pump compensates for the main vacuum pump, and improves the accuracy of adjusting the air pressure in the operating box.

[0008] According to the vacuum operating box for aluminum alloy 3D printing, the vacuum pressure sensor is installed at the outer side end of the vacuum chamber and extends into the vacuum chamber through the vacuum chamber.

[0009] According to the vacuum operating box for aluminum alloy 3D printing, the two vibration motors are fixedly connected to the lower end of the platform body and are located on the inner walls of the material collecting box.

[0010] According to the vacuum operating box for aluminum alloy 3D printing, the gas supply and purging mechanism is installed at the outer side end of the vacuum chamber, and the vacuum chamber is provided with a connecting port for connecting the gas supply and purging mechanism.

[0011] According to the vacuum operating box for aluminum alloy 3D printing, the electromagnetic valve is installed in the main air exhaust pipe and the auxiliary air exhaust pipe.

[0012] According to the vacuum operating box for aluminum alloy 3D printing, the sealing ring is fixedly connected to the outer side end of the sealing column and is located between the sealing column and the side wall of the discharge hole.

[0013] Compared with the prior art, the beneficial effects of the utility model are that the material collecting box is lowered by the electric push rod after the material printing is completed, the sealing column is separated from the discharge hole to open the discharge hole, the excess aluminum powder on the platform surface falls into the material collecting box for collection, and the recovery efficiency of the aluminum powder is improved.

[0014] The additional aspects and advantages of the utility model will be partially given in the following description, partially will become obvious from the following description, or will be understood by the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0015] The utility model will be further explained in combination with the drawings and examples;

[0016] Figure 1 It is an isometric view of the utility model vacuum operating box for aluminum alloy 3D printing;

[0017] Figure 2 It is a rear view of the utility model vacuum operating box for aluminum alloy 3D printing;

[0018] Figure 3 It is the exploded view of the printing platform mechanism of the vacuum operating box for aluminum alloy 3D printing of the utility model;

[0019] Figure 4 It is the perspective view of the three-dimensional drive mechanism of the vacuum operating box for aluminum alloy 3D printing of the utility model.

[0020] In the drawing: 1, vacuum chamber; 2, printing platform mechanism; 3, three-dimensional drive mechanism; 4, main air exhaust pipe; 5, main vacuum pump; 6, exhaust pipe; 7, connecting pipe; 8, auxiliary vacuum pump; 9, auxiliary air exhaust pipe; 10, platform main body; 11, sealing column; 12, base; 13, material receiving box; 14, electric push rod; 15, baffle; 16, support rod; 17, discharging hole; 18, first motor; 19, second motor; 20, Y-axis drive guide rail; 21, sliding block; 22, screw; 23, Y-axis support guide rail; 24, X-axis drive guide rail; 25, X-axis support guide rail; 26, laser / electron beam gun head; 27, Z-axis drive guide rail; 28, third motor. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0022] Please refer to Figures 1-4The utility model provides a technical scheme: a kind of vacuum operating box for aluminum alloy 3D printing, including vacuum chamber 1, vacuum chamber 1 outside end is equipped with vacuum pressure sensor, and the detection end of vacuum pressure sensor is through vacuum chamber 1 and extends to vacuum chamber 1, vacuum pressure sensor detects the vacuum degree in vacuum chamber 1, ensure that the environment in operating box meets the printing requirement.A three-dimensional driving mechanism 3 is installed in the vacuum chamber 1, and the three-dimensional driving mechanism 3 is composed of a first motor 18, a second motor 19, a Y-axis driving guide rail 20, a sliding block 21, a lead screw 22, a Y-axis supporting guide rail 23, an X-axis driving guide rail 24, an X-axis supporting guide rail 25, a laser / electron beam gun head 26, a Z-axis driving guide rail 27 and a third motor 28. The Y-axis driving guide rail 20 and the Y-axis supporting guide rail 23 are fixedly connected to the inner walls of the vacuum chamber 1 on both sides, and the upper and lower ends of the Y-axis driving guide rail 20 and the Y-axis supporting guide rail 23 are fixedly connected to the inner walls of the vacuum chamber 1. The sliding block 21 is arranged in the Y-axis driving guide rail 20, the Y-axis supporting guide rail 23, the X-axis driving guide rail 24, the X-axis supporting guide rail 25 and the Z-axis driving guide rail 27, and is slidably connected to the inner walls of the Y-axis driving guide rail 20, the Y-axis supporting guide rail 23, the X-axis driving guide rail 24, the X-axis supporting guide rail 25 and the Z-axis driving guide rail 27. The lead screw 22 is arranged in the middle of the inner walls of the Y-axis driving guide rail 20, the X-axis driving guide rail 24 and the Z-axis driving guide rail 27, and is rotatably connected to the Y-axis driving guide rail 20, the X-axis driving guide rail 24 and the Z-axis driving guide rail 27. The lead screw 22 in the Y-axis driving guide rail 20, the X-axis driving guide rail 24 and the Z-axis driving guide rail 27 penetrates the middle of the corresponding sliding block 21 and is threadedly connected to the sliding block 21. The first motor 18 is fixedly connected to the upper end of the vacuum chamber 1, and the output end of the first motor 18 penetrates the vacuum chamber 1. The output end of the first motor 18 is fixedly connected to the upper end of the lead screw 22 in the Y-axis driving guide rail 20. The sliding blocks 21 in the Y-axis driving guide rail 20 and the Y-axis supporting guide rail 23 are located in the middle of the two side ends of the base 12 and are fixedly connected to the base 12. The X-axis driving guide rail 24 and the X-axis supporting guide rail 25 are fixedly connected to the inner wall top end of the vacuum chamber 1, and the Y-axis driving guide rail 20 and the Y-axis supporting guide rail 23 are located in the middle between the X-axis driving guide rail 24 and the X-axis supporting guide rail 25. The openings of the X-axis driving guide rail 24 and the X-axis supporting guide rail 25 are downward. The output end of the second motor 19 is fixedly connected to one end of the lead screw 22 in the X-axis driving guide rail 24, and the second motor 19 is fixedly connected to the outer side end of the vacuum chamber 1. The Z-axis driving guide rail 27 is arranged at the lower end of the X-axis driving guide rail 24 and the X-axis supporting guide rail 25, and the sliding blocks 21 in the X-axis driving guide rail 24 and the X-axis supporting guide rail 25 are fixedly connected to the upper end of the Z-axis driving guide rail 27. The opening of the Z-axis driving guide rail 27 is downward. The laser / electron beam gun head 26 is fixedly connected to the lower end of the sliding block 21 in the Z-axis driving guide rail 27. The third motor 28 is fixedly connected to one end of the Z-axis driving guide rail 27, and the output end of the third motor 28 penetrates the Z-axis driving guide rail 27 and is fixedly connected to the lead screw 22 in the Z-axis driving guide rail 27. The Y-axis driving guide rail 20 adjusts the height of the platform on which the aluminum powder is placed, and the X-axis driving guide rail 24 and the Z-axis driving guide rail 27 cooperate to realize the printing of the laser / electron beam gun head 26 on the object.The three-dimensional driving mechanism 3 is installed with the printing platform mechanism 2, the upper end of the vacuum chamber 1 is fixedly connected with the main vacuum pump 5, the input end of the main vacuum pump 5 is fixedly connected with the main exhaust pipe 4, and the other end of the main exhaust pipe 4 is fixedly connected to the upper end of the vacuum chamber 1 and is in communication with the inside of the vacuum chamber 1, the back of the vacuum chamber 1 is fixedly connected with the auxiliary vacuum pump 8, the input end of the auxiliary vacuum pump 8 is fixedly connected with the auxiliary exhaust pipe 9, and the other end of the auxiliary exhaust pipe 9 is fixedly connected with the vacuum chamber 1 and is in communication with the inside of the vacuum chamber 1, the output end of the auxiliary vacuum pump 8 is fixedly connected with the connecting pipe 7, and the other end of the connecting pipe 7 is fixedly connected with the exhaust pipe 6 and is in communication with the exhaust pipe 6, the auxiliary vacuum pump 8 is used to compensate the main vacuum pump 5, and the gas pressure precision in the adjusting operation box is improved; the printing platform mechanism 2 is composed of a platform body 10, a sealing column 11, a base 12, a material collecting box 13, an electric push rod 14, a baffle 15 and a supporting rod 16, the middle parts of the two side ends of the base 12 are fixedly connected with the three-dimensional driving mechanism 3, the baffle 15 is of a U-shaped structure and is fixedly connected to the upper end middle part of the base 12, the material collecting box 13 is arranged in the baffle 15 and is slidably connected with the inner wall of the baffle 15, and the material collecting box 13 is provided with an upward opening, the electric push rod 14 is fixedly connected to the lower end middle part of the base 12, and the output end of the electric push rod 14 penetrates through the base 12 upward, the output end upper end of the electric push rod 14 is fixedly connected with the lower end middle part of the material collecting box 13, the platform body 10 is fixedly connected to the upper end of the baffle 15, and the platform body 10 is the same size as the base 12, the lower end of the platform body 10 is fixedly connected with two vibration motors, and the vibration motors are respectively located on the two sides of the inner wall of the material collecting box 13, the vibration motors make the surface of the platform body 10 and the printed object vibrate, and promote the remaining aluminum powder to enter the material collecting box 13 through the discharge hole 17. The surface of the platform body 10 is equidistantly provided with a plurality of discharge holes 17, and the discharge holes 17 are located within the opening range of the material collecting box 13, the supporting rod 16 is equidistantly fixedly connected to the bottom of the material collecting box 13, and the upper end of the supporting rod 16 is at the same height as the upper end of the material collecting box 13, the sealing column 11 is fixedly connected to the upper end of the supporting rod 16, and the sealing column 11 is slidably connected with the side wall of the discharge hole 17, the outer side end of the sealing column 11 is fixedly connected with a sealing ring, and the sealing ring is located between the sealing column 11 and the side wall of the discharge hole 17, the sealing ring is used to reduce the gap between the sealing column 11 and the discharge hole 17, avoid the aluminum powder from entering the material collecting box 13 during the printing process, cause the printing surface to be concave, and affect the quality of the printed object. The thickness of the discharge hole 17 is the same as the height of the sealing column 11. The outer side end of the vacuum chamber 1 is installed with a gas supply and blowing mechanism, and the surface of the vacuum chamber 1 is provided with a connecting port for connecting the gas supply and blowing mechanism, which is used to blow out the protective gas and disperse the air near the sintering and deposition area. The main exhaust pipe 4 and the auxiliary exhaust pipe 9 are respectively installed with electromagnetic valves. The electromagnetic valves respectively control the conduction of the main exhaust pipe 4 and the auxiliary exhaust pipe 9.

[0023] Working principle: when printing the object, the electric push rod 14 is fully extended, the upper end of the material collecting box 13 is attached to the lower end of the platform main body 10, the sealing ring seals the discharging hole 17, the first motor 18 drives the screw rod 22 in the Y-axis driving guide rail 20 to rotate, changes the rising or falling of the printing platform mechanism 2; the second motor 19 drives the screw rod 22 in the X-axis driving guide rail 24 to rotate, the third motor 28 drives the screw rod 22 in the Z-axis driving guide rail 27 to rotate, so that the laser / electron beam gun head 26 moves in the plane, and the object is printed. After printing is completed, the electric push rod 14 drives the material collecting box 13 to descend, the sealing column 11 moves to the lower side of the platform main body 10, the aluminum powder on the surface of the platform main body 10 enters the material collecting box 13 through the discharging hole 17, the vibration motor makes the platform main body 10 and the printed object vibrate, so that the aluminum powder on the surface of the printed object falls into the material collecting box 13 through the discharging hole 17.

[0024] The above embodiment of the utility model is described in detail in combination with the drawings, but the utility model is not limited to the above embodiment, and various changes can be made within the knowledge range possessed by those skilled in the art without departing from the purpose of the utility model.

Claims

1. A vacuum operating box for 3D printing of aluminum alloys, comprising a vacuum chamber (1), characterized in that, The three-dimensional driving mechanism (3) is installed in the vacuum chamber (1), the printing platform mechanism (2) is installed in the three-dimensional driving mechanism (3), the upper end of the vacuum chamber (1) is fixedly connected with a main vacuum pump (5), the input end of the main vacuum pump (5) is fixedly connected with a main air exhaust pipe (4), and the other end of the main air exhaust pipe (4) is fixedly connected to the middle part of the upper end of the vacuum chamber (1) and communicates with the inside of the vacuum chamber (1); The printing platform mechanism (2) is composed of a platform body (10), a sealing column (11), a base (12), a material collecting box (13), an electric push rod (14), a baffle (15) and a supporting rod (16), the middle parts of the two side ends of the base (12) are fixedly connected with the three-dimensional driving mechanism (3) respectively, the baffle (15) is of U-shaped structure and is fixedly connected to the middle part of the upper end of the base (12), the material collecting box (13) is arranged in the baffle (15) and is slidably connected with the inner wall of the baffle (15), and the material collecting box (13) is provided with an upward opening, the electric push rod (14) is fixedly connected to the middle part of the lower end of the base (12), the output end of the electric push rod (14) penetrates the base (12) upward, the output end of the electric push rod (14) is fixedly connected with the middle part of the lower end of the material collecting box (13), the platform body (10) is fixedly connected to the upper end of the baffle (15), and the platform body (10) is the same in size as the base (12), a plurality of discharging holes (17) are equidistantly arranged on the surface of the platform body (10), and the discharging holes (17) are located in the opening range of the material collecting box (13), a plurality of supporting rods (16) are equidistantly fixedly connected to the bottom of the material collecting box (13), the upper ends of the supporting rods (16) are at the same height as the upper end of the material collecting box (13), the sealing columns (11) are fixedly connected to the upper ends of the supporting rods (16) respectively, and the sealing columns (11) are slidably connected with the side walls of the discharging holes (17), and the thickness of the discharging holes (17) is the same as the height of the sealing columns (11).

2. The vacuum-operated box for aluminum alloy 3D printing of claim 1, wherein: The three-dimensional driving mechanism (3) is composed of a first motor (18), a second motor (19), a Y-axis driving guide rail (20), a sliding block (21), a lead screw (22), a Y-axis supporting guide rail (23), an X-axis driving guide rail (24), an X-axis supporting guide rail (25), a laser / electron beam gun head (26), a Z-axis driving guide rail (27) and a third motor (28). The Y-axis driving guide rail (20) and the Y-axis supporting guide rail (23) are fixedly connected to the inner walls of the vacuum chamber (1) on both sides, and the upper and lower ends of the Y-axis driving guide rail (20) and the Y-axis supporting guide rail (23) are fixedly connected to the inner walls of the vacuum chamber (1). The sliding block (21) is arranged in the Y-axis driving guide rail (20), the Y-axis supporting guide rail (23), the X-axis driving guide rail (24), the X-axis supporting guide rail (25) and the Z-axis driving guide rail (27), and is slidably connected to the inner walls of the Y-axis driving guide rail (20), the Y-axis supporting guide rail (23), the X-axis driving guide rail (24), the X-axis supporting guide rail (25) and the Z-axis driving guide rail (27). The lead screw (22) is arranged in the middle of the inner walls of the Y-axis driving guide rail (20), the X-axis driving guide rail (24) and the Z-axis driving guide rail (27), and is rotatably connected to the Y-axis driving guide rail (20), the X-axis driving guide rail (24) and the Z-axis driving guide rail (27). The lead screw (22) in the Y-axis driving guide rail (20), the X-axis driving guide rail (24) and the Z-axis driving guide rail (27) penetrates the middle of the corresponding sliding block (21) and is threadedly connected with the sliding block (21). The first motor (18) is fixedly connected to the upper end of the vacuum chamber (1), and the output end of the first motor (18) penetrates the vacuum chamber (1). The output end of the first motor (18) is fixedly connected with the upper end of the lead screw (22) in the Y-axis driving guide rail (20). The sliding blocks (21) in the Y-axis driving guide rail (20) and the Y-axis supporting guide rail (23) are located in the middle of the two side ends of the base (12) and are fixedly connected with the base (12). The X-axis driving guide rail (24) and the X-axis supporting guide rail (25) are fixedly connected to the inner wall top end of the vacuum chamber (1), and the Y-axis driving guide rail (20) and the Y-axis supporting guide rail (23) are located in the middle part between the X-axis driving guide rail (24) and the X-axis supporting guide rail (25). The openings of the X-axis driving guide rail (24) and the X-axis supporting guide rail (25) are downward. The output end of the second motor (19) is fixedly connected with one end of the lead screw (22) in the X-axis driving guide rail (24), and the second motor (19) is fixedly connected to the outer side end of the vacuum chamber (1). The Z-axis driving guide rail (27) is arranged at the lower end of the X-axis driving guide rail (24) and the X-axis supporting guide rail (25), and the sliding blocks (21) in the X-axis driving guide rail (24) and the X-axis supporting guide rail (25) are fixedly connected with the upper end of the Z-axis driving guide rail (27). The opening of the Z-axis driving guide rail (27) is downward. The laser / electron beam gun head (26) is fixedly connected to the lower end of the sliding block (21) in the Z-axis driving guide rail (27).The third motor (28) is fixedly connected to one end of the Z-axis driving guide rail (27), and the output end of the third motor (28) penetrates the Z-axis driving guide rail (27) and is fixedly connected with the lead screw (22) in the Z-axis driving guide rail (27).

3. The vacuum-operated box for aluminum alloy 3D printing of claim 1, wherein: The back surface of the vacuum chamber (1) is fixedly connected with an auxiliary vacuum pump (8), the input end of the auxiliary vacuum pump (8) is fixedly connected with an auxiliary air exhaust pipe (9), the other end of the auxiliary air exhaust pipe (9) is fixedly connected with the vacuum chamber (1) and communicates with the inside of the vacuum chamber (1), and the output end of the auxiliary vacuum pump (8) is fixedly connected with a connecting pipe (7), and the other end of the connecting pipe (7) is fixedly connected with an exhaust pipe (6) and communicates with the exhaust pipe (6).

4. The vacuum-operated box for aluminum alloy 3D printing of claim 1, wherein: A vacuum pressure sensor is installed on the outer side end of the vacuum chamber (1), and the detection end of the vacuum pressure sensor penetrates the vacuum chamber (1) and extends into the vacuum chamber (1).

5. The vacuum-operated box for aluminum alloy 3D printing of claim 1, wherein: Two vibration motors are fixedly connected to the lower end of the platform body (10), and the vibration motors are respectively located on the two side walls of the material collecting box (13).

6. The vacuum-operated box for aluminum alloy 3D printing of claim 1, wherein: A gas supply and purging mechanism is installed on the outer side end of the vacuum chamber (1), and the surface of the vacuum chamber (1) is provided with a connecting port for connecting the gas supply and purging mechanism.

7. The vacuum-operated box for aluminum alloy 3D printing of claim 1, wherein: An electromagnetic valve is installed in the main air exhaust pipe (4) and the auxiliary air exhaust pipe (9) respectively.

8. The vacuum-operated box for aluminum alloy 3D printing of claim 1, wherein: The outer side end of the sealing column (11) is fixedly connected with a sealing ring, and the sealing ring is located between the sealing column (11) and the side wall of the discharge hole (17).

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