Additive manufacturing tuyere device

Abstract

The invention relates to the technical field of additive manufacturing equipment, and discloses an additive manufacturing tuyere device which comprises a workbench, a box body is fixedly installed at the top of the workbench, a plurality of tuyere tanks are arranged on one side in the box body and are vertically arranged, and a shielding outer plate is attached between the outer walls of one sides of the multiple tuyere tanks; the shielding outer plate is fixedly installed in the box body, a plurality of air outlet holes are transversely formed in the outer wall face of each tuyere tank, an air suction and release assembly is arranged on one side of the box body, and air in the tuyere tanks is ejected and discharged at a high speed from the air outlet holes through the air suction and release assembly. In the discharging process, the tuyere tank can be driven to rotate in the direction of first rotation through the linkage assembly, all the air outlet holes can face the interior of the box all the time during rotation, the air outlet holes are kept in the rotating state all the time when gas is jetted, inert gas can be jetted to all corners in the box through the air outlet holes, and therefore the inert gas can be discharged out of the box. And the distribution uniformity of the inert gas in the box body is ensured.

Description

Technical Field

[0001] The present invention belongs to the technical field of additive manufacturing equipment, and in particular relates to an additive manufacturing tuyere device. Background Art

[0002] The additive manufacturing tuyere device is a device specially designed for gas circulation and smoke treatment in metal powder additive manufacturing equipment. Additive manufacturing is also commonly known as 3D printing. It is a manufacturing technology that gradually builds three-dimensional objects by stacking or adding materials layer by layer. The additive manufacturing tuyere device is specially designed for gas circulation and smoke treatment in additive manufacturing equipment. It usually includes an outlet structure and an air intake structure, as well as related gas transmission and control systems to achieve effective circulation of gas in the additive manufacturing equipment.

[0003] When metal powder is used for additive manufacturing, it is necessary to ensure that the powder is in a sealed box, and the powder is prone to oxidation reaction when it comes into contact with oxygen at high temperature, which will cause the quality of the metal powder to deteriorate. Therefore, it is necessary to inject inert gas into the box to prevent the powder from reacting with other gases in the air at high temperature. When the existing device injects inert gas into the box, the inert gas cannot be evenly distributed inside the box, resulting in excessive oxygen concentration in some areas, thereby increasing the risk of oxidation reaction between metal powder and oxygen, affecting the quality of the finished product of additive manufacturing.

[0004] To this end, the present invention provides an additively manufactured tuyere device. Summary of the invention

[0005] In order to make up for the deficiencies of the prior art: solve at least one technical problem raised in the background technology.

[0006] The technical solution adopted by the present invention to solve its technical problems is: an additive manufacturing tuyere device described in the present invention comprises a workbench, a box body is fixedly installed on the top of the workbench, a plurality of tuyere tanks are arranged on one side of the box body, the plurality of tuyere tanks are arranged vertically, a shielding outer plate is fitted between the outer walls of one side of the plurality of tuyere tanks, the shielding outer plate is fixedly installed on the inside of the box body, a plurality of air outlet holes are horizontally opened on the outer wall surface of each tuyere tank, a hollow plugging plate is fixedly connected to the inner wall of both ends of each tuyere tank, a hollow sleeve shaft is fixedly connected to one side of each hollow plugging plate, the outer wall of each hollow sleeve shaft is rotatably connected to the inner wall of the box body, a gas suction and release component is arranged on one side of the box body, the gas suction and release component is used to inject or discharge inert gas into or out of the tuyere tank, a linkage component for driving the hollow sleeve shaft to rotate is arranged above the workbench, and a stirring component for evenly mixing the inert gas is arranged inside the tuyere tank.

[0007] Preferably, a gas tank is fixedly installed just above the workbench, one side of the gas tank is interconnected with a ventilation pipe, the outer wall of the ventilation pipe is provided with a one-way valve, the end of the one-way valve away from the gas tank is interconnected with a splitter, the outer wall of the splitter is interconnected with multiple splitter pipes, and the multiple splitter pipes are plugged one by one with the hollow sleeve shaft on one side.

[0008] Preferably, the gas suction and release component includes an injection barrel, which is fixedly installed on the top of the workbench, one end of the injection barrel is fixedly connected to a connecting pipe, the end of the connecting pipe away from the injection barrel is fixedly connected to a combiner, the outer wall of the combiner is fixedly connected to a plurality of diversion tubes 2, the plurality of diversion tubes 2 are plugged one by one with the hollow sleeve shaft on the other side, the interior of the injection barrel is slidably connected to a piston block, and one side of the injection barrel is provided with a driving component for driving the piston block to slide.

[0009] Preferably, the driving assembly includes a telescopic cylinder, which is fixedly installed on the top of the workbench, and the output end of the telescopic cylinder is fixedly connected to a fixed rod, the outer wall of the fixed rod is plugged into the inner wall of the injection barrel, one end of the fixed rod is fixedly connected to one side of the piston block, the outer wall of the fixed rod is fixedly connected to a sleeve rod member, the bottom of the sleeve rod member is fixedly connected to an inner sliding block 1, and a fixed seat is fixedly installed on the top of the workbench, and the inner sliding block 1 is slidably connected and adapted to the inside of the fixed seat.

[0010] Preferably, connecting rods are fixedly connected to both sides of the inner sliding block, and side sliding grooves are symmetrically provided on the inner wall of the side of the fixing seat. The side sliding grooves are slidingly connected to the connecting rods and adapt to each other. One end of the connecting rod is movably connected to a double-end hinge, and the other end of the double-end hinge is movably connected to an external rod. One end of the external rod is fixedly connected to an elliptical turntable, and the external rod is located at an eccentric position of the elliptical turntable. The length of the elliptical turntable is the same as the length of the inner groove of the fixing seat.

[0011] Preferably, the outer walls of the shafts of the two elliptical turntables are fixedly connected with gear 1, and the top of the workbench is symmetrically fixedly installed with clamping parts, and the shafts of the two elliptical turntables are rotatably connected to the inner walls of the clamping parts respectively.

[0012] Preferably, the linkage assembly includes two toothed chains, the teeth of the two gear ones are respectively meshed with the teeth of the two toothed chains, the inner walls of the other ends of the two toothed chains are transmission-connected with gears 2, and the two gears 2 are respectively fixedly mounted on the outer walls of two of the hollow sleeve shafts.

[0013] Preferably, the outer wall of each hollow sleeve shaft is fixedly connected with a transmission ring, and the outer walls of the transmission rings on the same side are transmission-connected with a transmission belt.

[0014] Preferably, the stirring assembly includes multiple groups of stirring rods, each group has two stirring rods, the two ends of each two stirring rods are rotatably connected to the outer walls of the two hollow blocking plates at the eccentric positions, each two stirring rods are respectively located inside each tuyere tank, and the outer wall of each stirring rod is fixedly connected to a number of stirring blades.

[0015] Preferably, a circular slide groove is provided on the inner wall of the side of each hollow blocking plate, and the inner wall of the circular slide groove is symmetrically rotatably connected to an inner sliding block 2, one side of each inner sliding block 2 is fixedly connected to a support rod, an inner ring rack plate is fixedly connected between one end of each two support rods, the teeth of the inner ring rack plate are symmetrically meshed with an inner ring gear, and each inner ring gear is fixedly mounted on the outer wall of the stirring rod.

[0016] The beneficial effects of the present invention are as follows: 1. The additive manufacturing tuyere device described in the present invention can discharge the gas inside the tuyere tank from each tuyere hole at high speed through a gas suction and discharge component, and can also continue to drive the tuyere tank to rotate 180 degrees in the direction of the first rotation through a linkage component during the discharge process, and each tuyere can always face the inside of the box during this rotation, and the tuyere can always keep rotating when spraying gas, and the two cooperate with each other to achieve that the tuyere can spray the inert gas to each corner inside the box, thereby ensuring the uniform distribution of the inert gas in the box and reducing the risk of oxidation reaction of the metal powder during the melting process, thereby maintaining the purity and performance of the metal powder.

[0017] 2. The additive manufacturing tuyere device described in the present invention can drive the stirring rod to rotate inside the tuyere tank through the hollow blocking plate during the two rotation processes of gas injection and gas discharge in the tuyere tank. The stirring rod will revolve along the inner side of the inner ring rack plate, and when the stirring rod revolves, the teeth of the inner ring gear will mesh with the teeth of the inner ring rack plate. Therefore, when the stirring rod revolves, it will also rotate itself. Therefore, the stirring blade cooperates with the revolution and rotation effect inside the tuyere tank to further improve the process of stirring the inert gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below in conjunction with the accompanying drawings.

[0019] Figure 1 It is an overall stereogram of the present invention; Figure 2 It is a schematic diagram of the structure at the back of the box body in the present invention; Figure 3 It is a schematic diagram of the structure of the transmission ring in the present invention; Figure 4 It is a schematic diagram of the structure of the shielding outer plate in the present invention; Figure 5 It is a schematic diagram of the structure of the air outlet in the present invention; Figure 6 It is a schematic diagram of the internal structure of the tuyere tank in the present invention; Figure 7 It is a structural schematic diagram of the hollow blocking plate in the present invention; Figure 8 It is a schematic diagram of the structure of the inner ring rack plate in the present invention; Fig. 9 It is a structural schematic diagram of the injection barrel in the present invention; Fig.10 It is a structural schematic diagram of the piston block in the present invention; Fig.11 It is a schematic diagram of the structure of the toothed chain in the present invention; Fig.12 It is a structural schematic diagram of the elliptical turntable in the present invention.

[0020] In the figure: 1. workbench; 2. box; 3. tuyere tank; 4. shielding outer plate; 5. air outlet; 6. hollow plugging plate; 7. hollow sleeve shaft; 8. gas storage tank; 9. vent pipe; 10. one-way valve; 11. splitter; 12. splitter pipe 1; 13. splitter pipe 2; 14. combiner; 15. connecting pipe; 16. injection barrel; 17. fixing rod; 18. piston block; 19. telescopic cylinder; 20. sleeve rod; 21. fixing Seat; 22, inner slider 1; 23, side slide; 24, connecting rod; 25, double-end hinge; 26, elliptical turntable; 27, external rod; 28, gear 1; 29, clamping part; 30, toothed chain; 31, gear 2; 32, transmission ring; 33, transmission belt; 34, circular slide; 35, inner slider 2; 36, support rod; 37, inner ring rack plate; 38, stirring rod; 39, inner ring gear; 40, stirring blade. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0022] like Figures 1 to 11As shown, the present invention provides an additive manufacturing tuyere device, comprising a workbench 1, a box body 2 is fixedly installed on the top of the workbench 1, a plurality of tuyere tanks 3 are arranged on one side of the box body 2, the plurality of tuyere tanks 3 are vertically arranged, a shielding outer plate 4 is fitted between the outer walls of one side of the plurality of tuyere tanks 3, the shielding outer plate 4 is fixedly installed in the box body 2, a plurality of air outlet holes 5 are horizontally opened on the outer wall surface of each tuyere tank 3, a hollow plugging plate 6 is fixedly connected to the inner wall of both ends of each tuyere tank 3, a hollow sleeve shaft 7 is fixedly connected to one side of each hollow plugging plate 6, the outer wall of each hollow sleeve shaft 7 is rotatably connected to the inner wall of the box body 2, a gas suction and release component is arranged on one side of the box body 2, the gas suction and release component is used to inject or discharge inert gas into or out of the tuyere tank 3, a linkage component for driving the hollow sleeve shaft 7 to rotate is arranged above the workbench 1, and a stirring component for uniformly mixing the inert gas is arranged inside the tuyere tank 3.

[0023] During operation: the instruments and materials required for additive manufacturing are placed inside the box body 2, so that the metal powder is in a sealed space during the additive manufacturing process. In the initial state, the air outlet 5 opened on each tuyere tank 3 faces directly upward, and the shielding outer plate 4 shields the semicircle outer wall of the tuyere tank 3. When it is necessary to inject inert gas into the interior of the box body 2, the inert gas is first absorbed into the interior of each tuyere tank 3 through the gas absorption and release component, and in the process of absorbing the inert gas inside the tuyere tank 3, the linkage component can drive each tuyere tank 3 to rotate 180 degrees through each hollow sleeve shaft 7. When each tuyere tank 3 rotates 180 degrees, the air outlet 5 opened on its surface will rotate along the side of the shielding outer plate 4, and when rotating 180 degrees, the outlet of the air outlet 5 is always blocked by the shielding outer plate 4, so that the inert gas injected into each tuyere tank 3 will not leak out. When the inner cavity of each tuyere tank 3 is filled with gas, the air outlet 5 faces directly downward. At this time, the gas inside the tuyere tank 3 is ejected and discharged from each air outlet 5 at high speed through the gas suction and discharge component, and during the discharge process, the tuyere tank 3 can continue to rotate 180 degrees in the direction of the first rotation through the linkage component. Each air outlet 5 can always face the inside of the box body 2 during this rotation, and the air outlet 5 always keeps a rotating state when ejecting gas. The two cooperate with each other to achieve that the air outlet 5 can eject the inert gas to each corner inside the box body 2, thereby ensuring the uniform distribution of the inert gas in the box body 2 and reducing the risk of oxidation reaction of the metal powder during the melting process, thereby maintaining the purity and performance of the metal powder. In addition, during the two rotations of the tuyere tank 3 for injection and deflation, the internal stirring component can be driven to rotate, and the stirring component can stir the gas injected into the tuyere tank 3 evenly to avoid the local excessive concentration of the gas inside the tuyere tank 3, thereby further improving the uniformity of the inert gas injected into the box body 2.

[0024] like Figure 1 to Figure 2As shown, a gas tank 8 is fixedly installed just above the workbench 1, and a ventilation pipe 9 is interconnected on one side of the gas tank 8. A one-way valve 10 is provided on the outer wall of the ventilation pipe 9. An end of the one-way valve 10 away from the gas tank 8 is interconnected with a splitter 11, and a plurality of shunt pipes 12 are interconnected on the outer walls of the splitter 11. The plurality of shunt pipes 12 are plugged one by one with the hollow sleeve shaft 7 on one side.

[0025] During operation: the gas storage tank 8 is an inert gas collection point. When it is necessary to inject inert gas into the inner cavity of each tuyere tank 3, the gas suction and discharge assembly can inject the gas inside the gas storage tank 8 into the splitter 11 through the vent pipe 9 through the one-way valve 10. After the gas enters the splitter 11, it can be evenly distributed to the interior of each tuyere tank 3 through each diversion pipe 12. When it is necessary to spray the inert gas in the inner cavity of each tuyere tank 3 from the air outlet 5 to the interior of the box body 2, due to the one-way valve 10, the inert gas cannot flow back to the interior of the gas storage tank 8 through the one-way valve 10, and the gas can only be sprayed out from the air outlet 5 on each tuyere tank 3, thereby completing the effect of inert gas injection and spraying.

[0026] like Figures 9 and 10 As shown, the gas suction and release component includes an injection barrel 16, which is fixedly installed on the top of the workbench 1, one end of the injection barrel 16 is fixedly connected to a connecting pipe 15, and the end of the connecting pipe 15 away from the injection barrel 16 is fixedly connected to a combiner 14, and the outer wall of the combiner 14 is fixedly connected to a plurality of shunt pipes 13, and the plurality of shunt pipes 13 are plugged one by one with the hollow sleeve shaft 7 on the other side, and the inside of the injection barrel 16 is slidably connected to a piston block 18, and one side of the injection barrel 16 is provided with a driving component for driving the piston block 18 to slide.

[0027] During operation: in the initial state, the piston block 18 is located at the rightmost end inside the injection barrel 16. When it is necessary to inhale inert gas inside the tuyere tank 3, the drive assembly is started. The drive assembly can make the piston block 18 slide from the rightmost end to the leftmost end inside the injection barrel 16. During the sliding process of the piston block 18, suction can be generated and transmitted to each tuyere tank 3 through the connecting pipe 15 and the shunt pipe 13. At this time, since the air outlet 5 is always in a position blocked by the blocking outer plate 4, the tuyere tank 3 can absorb the inert gas in the inner cavity of the gas storage tank 8 into it, thereby completing the suction process. Similarly, during the exhaust process, the piston block 18 is slid from the leftmost end inside the injection barrel 16 to the rightmost end again through the drive assembly. At this time, since the one-way valve 10 is closed and the air outlet 5 is always in a position aligned with the inside of the box body 2, the inert gas inside the tuyere tank 3 can be squeezed by the piston block 18 and ejected from the air outlet 5 at high speed.

[0028] like Figures 9 and 10As shown, the driving assembly includes a telescopic cylinder 19, which is fixedly installed on the top of the workbench 1, and the output end of the telescopic cylinder 19 is fixedly connected to a fixed rod 17, the outer wall of the fixed rod 17 is plugged into the inner wall of the injection barrel 16, one end of the fixed rod 17 is fixedly connected to one side of the piston block 18, the outer wall of the fixed rod 17 is fixedly connected to a sleeve rod member 20, the bottom of the sleeve rod member 20 is fixedly connected to an inner sliding block 22, and a fixed seat 21 is fixedly installed on the top of the workbench 1, and the inner sliding block 22 is slidably connected and adapted to the inside of the fixed seat 21.

[0029] During operation: during the air intake process of the tuyere tank 3, the telescopic cylinder 19 is started, and its output end will drive the fixed rod 17 to move, and the fixed rod 17 can drive the piston block 18 to move from the rightmost end to the leftmost end inside the injection barrel 16, and at this time, the sleeve rod 20 can make the inner sliding block 22 move from the rightmost end inside the fixed seat 21 to the leftmost end. Similarly, during the deflation process of the tuyere tank 3, the fixed rod 17 drives the piston block 18 from the leftmost end inside the injection barrel 16 back to the leftmost end, and the inner sliding block 22 slides back to the rightmost end of the fixed seat 21. Through the fixed seat 21 and the inner sliding block 22, the sliding stability of the piston block 18 is improved, and it is convenient to prepare for the subsequent driving of the linkage assembly.

[0030] like Figure 11 to Figure 12 As shown, connecting rods 24 are fixedly connected to both sides of the inner sliding block 22, and side sliding grooves 23 are symmetrically provided on the inner wall of the side of the fixing seat 21. The side sliding grooves 23 are slidably connected to the connecting rods 24 and are adapted to each other. One end of the connecting rod 24 is movably connected to a double-end hinge 25, and the other end of the double-end hinge 25 is movably connected to an external rod 27. One end of the external rod 27 is fixedly connected to an elliptical turntable 26, and the external rod 27 is located at an eccentric position of the elliptical turntable 26. The length of the elliptical turntable 26 is the same as the length of the inner groove of the fixing seat 21.

[0031] During operation: when the inner sliding block 22 moves from the rightmost end to the leftmost end inside the fixing seat 21, it will drive the connecting rod 24 to move, and the connecting rod 24 will cause the elliptical turntable 26 to rotate through the double-end hinge 25 and the external rod 27. And since the length of the elliptical turntable 26 is the same as the length of the inner groove of the fixing seat 21, the elliptical turntable 26 can just rotate 180 degrees counterclockwise during the entire air intake process. Similarly, when the inner sliding block 22 slides back to the rightmost end of the fixing seat 21, the elliptical turntable 26 can continue to rotate 180 degrees counterclockwise during the entire air deflation process. The two 180-degree rotations of the elliptical turntable 26 in the same direction can just act on each tuyere tank 3 through the linkage assembly, thereby realizing that the air outlet 5 of the tuyere tank 3 can rotate during air intake but is blocked by the blocking outer plate 4, and the air outlet 5 of the tuyere tank 3 continues to rotate during air deflation, and the entire rotation process is aligned with different positions inside the box body 2.

[0032] like Figure 11 to Figure 12As shown, the outer walls of the shafts of the two elliptical turntables 26 are fixedly connected with gears 1 28 , and the top of the workbench 1 is symmetrically fixedly installed with clamping members 29 , and the shafts of the two elliptical turntables 26 are rotatably connected to the inner walls of the clamping members 29 .

[0033] During operation: the elliptical turntable 26 and the gear 1 28 are fixed in position by the clamping member 29. When the elliptical turntable 26 rotates 180 degrees twice respectively, the gear 1 28 is driven by the shaft rod to rotate 180 degrees twice in the same direction.

[0034] like Figure 11 to Figure 12 As shown, the linkage assembly includes two toothed chains 30, the teeth of the two gears 1 28 are respectively meshed with the teeth of the two toothed chains 30, and the inner walls of the other ends of the two toothed chains 30 are transmission-connected with gears 2 31, and the two gears 2 31 are respectively fixedly mounted on the outer walls of two of the hollow sleeve shafts 7.

[0035] During operation: during the air intake and air discharge process of the tuyere tank 3, gear one 28 will rotate 180 degrees twice in the same direction, and drive gear two 31 to rotate through the toothed chain 30, gear two 31 will drive the hollow sleeve shaft 7 to rotate, and the hollow sleeve shaft 7 will drive the tuyere tank 3 to rotate through the hollow blocking plate 6, thereby achieving the effect that the tuyere tank 3 will rotate 180 degrees twice in the same direction during the air intake and air discharge process.

[0036] like Figures 2 to 3 As shown, the outer wall of each hollow sleeve shaft 7 is fixedly connected with a transmission ring 32, and the outer walls of the transmission rings 32 on the same side are transmission-connected with a transmission belt 33.

[0037] During operation: when the tuyere tank 3 connected to the gear 2 31 rotates, all the tuyere tanks 3 will be driven to rotate through the transmission ring 32 and the transmission belt 33, so that each tuyere tank 3 can rotate twice at the same time, thereby completing the entire air intake and exhaust process, and achieving the effect of evenly spraying the inert gas into the interior of the box body 2.

[0038] like Figures 6 to 8 As shown, the stirring assembly includes multiple groups of stirring rods 38, each group of stirring rods 38 has two stirring rods, and the two ends of each two stirring rods 38 are rotatably connected to the outer walls of the two hollow blocking plates 6 at the eccentric positions. Each two stirring rods 38 are respectively located inside each tuyere tank 3, and the outer wall of each stirring rod 38 is fixedly connected to a plurality of stirring blades 40.

[0039] During operation: when the hollow sleeve shaft 7 drives the tuyere tank 3 to rotate through the hollow blocking plate 6 to perform air intake and exhaust, the stirring rod 38 and the stirring blade 40 will rotate inside the tuyere tank 3. When the stirring rod 38 rotates, the inert gas in the inner cavity of the tuyere tank 3 can be evenly mixed and stirred to avoid local concentration differences in the gas entering the tuyere tank 3, thereby affecting the uniform entry of the gas into the tuyere tank 3.

[0040] like Figures 6 to 8 As shown, a circular groove 34 is provided on the inner wall of the side of each hollow blocking plate 6, and the inner wall of the circular groove 34 is symmetrically rotatably connected with an inner sliding block 2 35, and a support rod 36 is fixedly connected to one side of each inner sliding block 2 35, and an inner ring rack plate 37 is fixedly connected between one end of each two support rods 36, and the teeth of the inner ring rack plate 37 are symmetrically meshed with an inner ring gear 39, and each inner ring gear 39 is fixedly mounted on the outer wall of the stirring rod 38.

[0041] During operation: when the hollow blocking plate 6 drives the stirring rod 38 to rotate inside the tuyere tank 3, the stirring rod 38 will revolve along the inner side of the inner ring rack plate 37, and when the stirring rod 38 revolves, the teeth of the inner ring gear 39 will mesh with the teeth of the inner ring rack plate 37. Therefore, when the stirring rod 38 revolves, it will also rotate itself. Therefore, the stirring blade 40 cooperates with the effects of revolution and rotation inside the tuyere tank 3 to further improve the process of stirring the inert gas.

[0042] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An additive manufacturing tuyere device, comprising a workbench (1), characterized in that: A box body (2) is fixedly installed on the top of the workbench (1), and a plurality of tuyere tanks (3) are arranged on one side of the box body (2). The plurality of tuyere tanks (3) are arranged vertically, and a shielding outer plate (4) is attached between the outer walls of one side of the plurality of tuyere tanks (3). The shielding outer plate (4) is fixedly installed inside the box body (2). A plurality of air outlet holes (5) are horizontally opened on the outer wall surface of each tuyere tank (3), and a hollow blocking plate (6) is fixedly connected to the inner wall at both ends of each tuyere tank (3). A hollow sleeve shaft (7) is fixedly connected to one side of each hollow blocking plate (6), and the outer wall of each hollow sleeve shaft (7) is rotatably connected to the inner wall of the box body (2). A gas suction and discharge component is provided on one side of the box body (2), and the gas suction and discharge component is used to inject or discharge inert gas into or out of the tuyere tank (3). A linkage component for driving the hollow sleeve shaft (7) to rotate is provided above the workbench (1), and a stirring component for uniformly mixing the inert gas is provided inside the tuyere tank (3).

2. The additive manufacturing tuyere device according to claim 1, characterized in that: A gas storage tank (8) is fixedly installed directly above the workbench (1), one side of the gas storage tank (8) is interconnected with a ventilation pipe (9), the outer wall of the ventilation pipe (9) is provided with a one-way valve (10), the end of the one-way valve (10) away from the gas storage tank (8) is interconnected with a splitter (11), the outer wall of the splitter (11) is interconnected with a plurality of flow splitter pipes (12), and the plurality of flow splitter pipes (12) are plugged one by one with the hollow sleeve shaft (7) on one side.

3. The additive manufacturing tuyere device according to claim 2, characterized in that: The gas suction and discharge assembly comprises an injection barrel (16), the injection barrel (16) is fixedly mounted on the top of a workbench (1), one end of the injection barrel (16) is fixedly connected to a connecting pipe (15), the end of the connecting pipe (15) away from the injection barrel (16) is fixedly connected to a combiner (14), the outer wall of the combiner (14) is fixedly connected to a plurality of shunt pipes (13), the plurality of shunt pipes (13) are plugged one by one with a hollow sleeve shaft (7) on the other side, the interior of the injection barrel (16) is slidably connected to a piston block (18), and a driving assembly for driving the piston block (18) to slide is provided on one side of the injection barrel (16).

4. The additive manufacturing tuyere device according to claim 3, characterized in that: The driving assembly comprises a telescopic cylinder (19), the telescopic cylinder (19) is fixedly mounted on the top of the workbench (1), the output end of the telescopic cylinder (19) is fixedly connected to a fixed rod (17), the outer wall of the fixed rod (17) is plugged into the inner wall of the injection barrel (16), one end of the fixed rod (17) is fixedly connected to one side of a piston block (18), the outer wall of the fixed rod (17) is fixedly connected to a sleeve rod member (20), the bottom of the sleeve rod member (20) is fixedly connected to an inner sliding block (22), a fixed seat (21) is fixedly mounted on the top of the workbench (1), and the inner sliding block (22) is slidably connected and matched with the inside of the fixed seat (21).

5. The additive manufacturing tuyere device according to claim 4, characterized in that: Both sides of the inner slider (22) are fixedly connected with connecting rods (24), and the inner wall of the side of the fixed seat (21) is symmetrically provided with side sliding grooves (23). The side sliding grooves (23) and the connecting rods (24) are slidably connected and mutually adapted. One end of the connecting rod (24) is movably connected with a double-end hinge (25), and the other end of the double-end hinge (25) is movably connected with an external connecting rod (27). One end of the external connecting rod (27) is fixedly connected with an elliptical rotating disk (26), and the external connecting rod (27) is located at an eccentric position of the elliptical rotating disk (26). The length of the elliptical rotating disk (26) is the same as the length of the inner groove of the fixed seat (21).

6. The additive manufacturing tuyere device according to claim 5, characterized in that: The outer walls of the shafts of the two elliptical turntables (26) are fixedly connected to a gear 1 (28), and a clamping member (29) is symmetrically fixedly installed on the top of the workbench (1), and the shafts of the two elliptical turntables (26) are rotatably connected to the inner walls of the clamping member (29).

7. The additive manufacturing tuyere device according to claim 6, characterized in that: The linkage assembly comprises two toothed chains (30), the teeth of the two gears 1 (28) respectively meshing with the teeth of the two toothed chains (30), the inner walls of the other ends of the two toothed chains (30) are both transmission-connected with gears 2 (31), and the two gears 2 (31) are respectively fixedly mounted on the outer walls of two of the hollow sleeve shafts (7).

8. The additive manufacturing tuyere device according to claim 7, characterized in that: The outer wall of each hollow sleeve shaft (7) is fixedly connected to a transmission ring (32), and the outer walls of the transmission rings (32) on the same side are transmission-connected to a transmission belt (33).

9. The additive manufacturing tuyere device according to claim 8, characterized in that: The stirring assembly comprises a plurality of groups of stirring rods (38), each group of stirring rods (38) having two stirring rods, the two ends of each of the two stirring rods (38) being rotatably connected to the outer walls of the two hollow blocking plates (6) at eccentric locations, the two stirring rods (38) being located inside each tuyere tank (3), and the outer wall of each stirring rod (38) being fixedly connected to a plurality of stirring blades (40).

10. The additive manufacturing tuyere device according to claim 9, characterized in that: A circular slide groove (34) is provided on the inner wall of the side of each hollow blocking plate (6), and the inner wall of the circular slide groove (34) is symmetrically rotatably connected to an inner slide block (35). A support rod (36) is fixedly connected to one side of each inner slide block (35), and an inner ring rack plate (37) is fixedly connected between one end of each two support rods (36). The teeth of the inner ring rack plate (37) are symmetrically meshed with an inner ring gear (39), and each inner ring gear (39) is fixedly mounted on the outer wall of the stirring rod (38).

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