Automatic powdering device for binder spraying 3D printer

Abstract

The utility model discloses an automatic powdering device for a binder jet 3D printer, which comprises a feeding frame, a liftable sliding support is arranged on the feeding frame, a powder hopper is arranged on one side of the sliding support, a rotary table is connected below the sliding support, a powdering assembly extending outwards is arranged above the rotary table, and a powder feeding assembly is arranged above the rotary table. The powder conveying assembly is provided with a feeding port, the feeding port is connected with the powder hopper, and a discharging port is formed in the end, away from the feeding port, of the powder conveying assembly. According to the automatic powder feeding device, the powder feeding work of the binder injection 3D printer can be automatically carried out, powder leakage in the powder feeding process is avoided, and the working efficiency of powder feeding is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of 3D printing, in particular to an automatic powder loading device for a binder jetting 3D printer. Background Art

[0002] Binder jet 3D printer is an efficient 3D printing technology that uses a binder deposited on a powder material to create the geometry of a part. Binder jet 3D printers can use metal powders and the like for printing. The binder is precisely deposited on the material bed, connecting the particles together and sintering to form a strong, dense part. During the printing process of a binder jet 3D printer, powder loading is required. The existing technology generally uses a semi-automatic powder loading device. There is a lot of manual intervention when docking the feed port of the binder jet 3D printer. After completing the powder loading of one binder jet 3D printer, the powder loading device needs to be moved as a whole to load the next one, resulting in low powder loading efficiency. Summary of the invention

[0003] The purpose of the utility model is to provide an automatic powder loading device for a binder jet 3D printer in view of the problems existing in the prior art, which can automatically load the powder of the binder jet 3D printer and avoid the leakage of powder when loading is completed, thereby improving the working efficiency of loading.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: an automatic powder loading device for a binder jet 3D printer, comprising a loading rack, a liftable sliding bracket is provided on the loading rack, a powder hopper is provided on one side of the sliding bracket, a turntable is connected below the sliding bracket, a pollination component extending outward is provided above the turntable, a feed port is provided on the pollination component, the feed port is connected to the powder hopper, and a discharge port is provided at one end of the pollination component away from the feed port.

[0005] The powder hopper is lifted to the powder feeding height of the 3D printer by the sliding bracket, thereby avoiding multiple manual transportation of powder and improving the powder loading efficiency; the rotation of the turntable is controlled to realize the rotation of the powder transfer component, thereby improving the flexibility of the powder loading device, reducing the time of manual movement of the powder loading device to dock with the discharge port, and improving the work efficiency; at the same time, the rotation of the powder transfer component can continue to complete the powder feeding work of another adjacent 3D printer after completing the powder feeding of one 3D printer, without adjusting the powder feeding device, thereby effectively improving the work efficiency.

[0006] Furthermore, a powder hopper bracket is provided on one side of the sliding bracket, and the powder hopper bracket is connected to and installed with the powder hopper; a turntable bracket is provided below the sliding bracket, and the turntable is installed on the horizontal part of the turntable bracket.

[0007] The powder hopper is connected and installed on the powder hopper bracket, so that the powder hopper can be lifted and lowered along with the powder hopper bracket; the turntable bracket is provided below the sliding bracket and the turntable is arranged on the horizontal part of the turntable bracket, so that the lifting and lowering of the turntable bracket can be achieved.

[0008] Furthermore, the loading rack includes a base, a movable roller and a fixed footrest are arranged below the base, a support column is arranged on the base, a vertical slide rail is arranged on the support column, and the sliding bracket is connected to the slide rail through a slider.

[0009] By arranging movable rollers on the base, the flexibility of the powder loading device is improved, and the position of the powder loading device is conveniently moved according to different positions of the 3D printer; by arranging the fixed footrest, the stability of the powder loading device is improved; the slide rail and the sliding bracket are connected by a slider, so that the lifting and lowering of the sliding bracket is realized.

[0010] Furthermore, a support frame is provided on one side of the loading rack, an electric hoist is provided on the support frame, and the electric hoist is connected to at least one hoisting wire rope. The hoisting wire rope is wound around a pulley above the loading rack and extends downward and is connected to the sliding bracket.

[0011] By arranging the support frame on the loading rack and arranging the electric hoist on the support frame, it is ensured that the electric hoist moves together with the loading rack; at least one hoisting wire rope is connected through the electric hoist, and the hoisting wire rope is wound around the pulley above the loading rack and extends downward and is connected to the sliding bracket, thereby providing power for the lifting and lowering of the sliding bracket and improving the powder loading efficiency.

[0012] Furthermore, the pollination assembly includes a shell installed on the turntable, a spiral discharge shaft arranged in the shell, and a drive motor arranged on the turntable, and the output end of the drive motor is connected to the spiral discharge shaft through a transmission member; the discharge port and the feed port are provided on the shell.

[0013] The outer shell is installed on the turntable to realize the rotation of the pollination assembly. At the same time, the outer shell can form a sealed space to prevent the powder from scattering during the powder feeding process; the powder is transported from the feed port to the discharge port by the rotation of the bolt discharge shaft in the outer shell; the spiral discharge shaft is connected by a driving motor to provide rotational power for the spiral discharge shaft.

[0014] Furthermore, the discharge port is provided with a discharge guide mechanism, so that the powder from the discharge port can accurately enter the feed port of the binder jet 3D printer to avoid leakage of the powder.

[0015] Furthermore, the discharge guide mechanism includes a guide tube arranged below the discharge port, a sliding tube is arranged in the guide tube, a control plate is arranged on the outside of the guide tube, the control plate is connected to the guide tube and the sliding tube through a radial guide shaft, a spring bracket connected to the pollination assembly is also arranged on the outside of the control plate, the spring bracket is connected to the control plate through a pin shaft, and one side of the spring bracket is also connected to the guide shaft through a spring.

[0016] The guide tube is provided with a hole for the guide shaft to move up and down, so that the guide shaft can only move up and down; when powdering is required, the control plate rotates counterclockwise around the pin shaft, and the guide shaft abutting against the control plate moves downward under the limit of the guide tube, and at the same time, the sliding tube connected to the guide shaft is lowered; when powdering is finished, under the action of the guide tube and the spring tension, the control plate rotates clockwise around the pin shaft, and the guide shaft automatically drives the sliding tube to rise. Among them, when the sliding tube rises higher than the discharge port, the powder can be prevented from leaking out; when the sliding tube drops lower than the discharge port, the powder can smoothly enter the discharge port; by setting the discharge guide mechanism, the working efficiency of powdering is effectively improved, and at the same time, the leakage of powder after powdering is avoided.

[0017] Furthermore, a material rack shell is arranged on the outer side of the loading rack, and the material rack shell is provided with a lifting hole; a powder hopper shell is arranged on the outer side of the powder hopper, and the powder hopper shell is provided with a rotating hole.

[0018] The material rack housing and the powder hopper housing are provided to prevent dust; the lifting hole provides a lifting space for the powder hopper bracket; and the rotating hole provides a rotating space for the pollination component.

[0019] Compared with the prior art, the beneficial effects of the utility model are as follows: 1. The powder hopper is lifted to the powder feeding height of the 3D printer by the sliding bracket, which avoids the manual multiple transportation of powder and improves the powder loading efficiency; the powder transfer component is rotated by controlling the rotation of the turntable, which improves the flexibility of the powder loading device, reduces the time of manually moving the powder loading device to dock the discharge port, and improves the work efficiency; the powder is sealed in a closed space by the powder transfer component, which reduces the scattering and leakage of powder during the powder loading process; at the same time, the powder transfer component can be rotated after completing the powder feeding of one 3D printer, and the powder feeding work of another adjacent 3D printer can be continued without moving the powder loading device as a whole, which effectively improves the work efficiency. 2. By arranging a support frame on the loading rack and an electric hoist on the support frame, it is ensured that the electric hoist moves with the loading rack; at least one hoisting wire rope is connected to the electric hoist, and the hoisting wire rope is wound from the pulley above the loading rack and extends downward and is connected to the sliding bracket, providing power for the lifting and lowering of the sliding bracket, thereby improving the powder loading efficiency. 3. The sliding tube is lifted and lowered by rotating the control plate, which avoids the problem of powder leaking from the powder transfer assembly after powder loading, reduces the waste of powder, and at the same time, the rotation process of the control plate does not require manual operation, which improves the efficiency of powder loading. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a first perspective view of the structure of an automatic powder loading device for a binder jet 3D printer according to the utility model;

[0021] Figure 2 This is a second perspective view of the structure of an automatic powder loading device for a binder jet 3D printer according to the utility model;

[0022] Figure 3 This is a partial enlarged view of A of an automatic powder loading device for a binder jet 3D printer of the utility model;

[0023] Figure 4 This is a first perspective view of a sliding bracket for an automatic powder loading device for a binder jet 3D printer according to the utility model;

[0024] Figure 5 This is a second perspective view of a sliding bracket for an automatic powder loading device for a binder jet 3D printer according to the utility model;

[0025] Figure 6 This is a side view of a discharge guide mechanism for an automatic powder loading device of a binder jet 3D printer according to the utility model;

[0026] Figure 7 This is a schematic diagram of the structure of a powder transfer component for an automatic powder loading device for a binder jet 3D printer according to the utility model;

[0027] Figure 8This is a structural cross-sectional view of a powder transfer component for an automatic powder loading device for a binder jet 3D printer according to the utility model;

[0028] Fig. 9 This is a first perspective view of an automatic powder loading device (with a material rack housing and a powder hopper housing) for a binder jet 3D printer according to the utility model;

[0029] Fig.10 This is a second viewing angle diagram of an automatic powder loading device (with a material rack housing and a powder hopper housing) for a binder jetting 3D printer according to the utility model.

[0030] In the figure: 1, loading rack; 101, base; 102, support column; 2, sliding bracket; 201, second pulley; 3, powder hopper; 4, turntable; 5, pollination assembly; 501, feed inlet; 502, discharge outlet; 503, housing; 504, spiral discharge shaft; 505, drive motor; 506, belt; 507, pulley; 6, powder hopper bracket; 7, turntable bracket; 8, slide rail; 9, slider; 10, support frame; 11, electric hoist; 12, hoist wire rope; 13, first pulley; 14, discharge guide mechanism; 1401, spring bracket; 1402, guide shaft; 1403, guide Toward tube; 1404, sliding tube; 1405, control board; 1406, pin shaft; 1407, long hole; 15, material rack shell; 1501, lifting hole; 1502, control switch; 1503, moving handle; 16, powder hopper shell; 1601, rotating hole; 17, first sealing ring; 18, second sealing ring; 19, movable hole; 20, moving roller; 2001, first roller; 2002, second roller; 21, fixed foot; 22, lifting ring; 23, eye hook; 24, upper limit bracket; 25, lower limit bracket; 26, touch panel; 27, connecting ear; 28, triangular foot. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the utility model to clearly and completely describe the technical solution of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] In the description of the present invention, it should be noted that the directions or positional relationships indicated by terms such as "middle", "upper", "lower", "left", "right", "inside" and "outside" are based on the directions 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 direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0033] like Figure 1-10 As shown, the utility model provides an automatic powder loading device for a binder jet 3D printer, including a loading rack 1, a liftable sliding bracket 2 is provided on the loading rack 1, a powder hopper 3 is provided on one side of the sliding bracket 2, a turntable 4 is connected below the sliding bracket 2, a pollination component 5 extending outward is provided above the turntable 4, a feed port 501 is provided on the pollination component 5, the feed port 501 is connected to the powder hopper 3, and a discharge port 502 is provided at one end of the pollination component 5 away from the feed port 501.

[0034] It can be understood that by lifting the powder hopper 3 to the powder feeding height of the 3D printer through the sliding bracket 2, multiple manual transportation of powder is avoided, thereby improving the powder loading efficiency; the rotation of the turntable 4 is controlled to realize the rotation of the powder transfer component 5, thereby improving the flexibility of the powder loading device, reducing the time for manual movement of the powder loading device to dock with the discharge port 502, and improving work efficiency. At the same time, through the rotation of the powder transfer component 5, after completing the powder feeding of one 3D printer, the powder feeding work of another adjacent 3D printer can be continued without adjusting the powder feeding device, thereby effectively improving work efficiency.

[0035] Furthermore, a powder hopper bracket 6 is provided on one side of the sliding bracket 2, and the powder hopper bracket 6 is connected to the powder hopper 3; a turntable bracket 7 is provided below the sliding bracket 2, and a turntable 4 is installed on the horizontal part of the turntable bracket 7. Figure 4 As shown, the turntable bracket 7 is L-shaped, one end of the vertical portion of the turntable bracket 7 is bolted to the sliding bracket 2, and the turntable 4 is placed on the horizontal portion of the turntable bracket 7 so that the turntable 4 can rotate horizontally; the powder hopper bracket 6 is installed on the side of the sliding bracket 2, the powder hopper bracket 6 is triangular, and the horizontal portion of the powder hopper bracket 6 is connected to the powder hopper 3 through four connecting ears 27.

[0036] It is understandable that the powder hopper 3 is connected and installed on the powder hopper bracket 6, so that the powder hopper 3 can be raised and lowered along with the powder hopper bracket 6; the turntable bracket 7 is provided under the sliding bracket 2 and the turntable 4 is set on the horizontal part of the turntable bracket 7, so that the raising and lowering of the turntable bracket 7 can be achieved.

[0037] Furthermore, the loading rack 1 includes a base 101, a movable roller 20 and a fixed foot 21 are arranged below the base 101, a support column 102 is arranged on the base 101, a vertical slide rail 8 is arranged on the support column 102, and the sliding bracket 2 is connected to the slide rail 8 through a slider 9. Figure 1-5As shown, a base 101 is provided at the bottom of the loading rack 1, and a first roller 2001 and a second roller 2002 are fixed below the base 101. The first roller 2001 is larger than the second roller 2002, so that the powder loading device can be moved with the first roller 2001 as a fulcrum. The base 101 is provided with three retractable fixed feet 21 to ensure the stability of the powder loading device during the powder filling process; the base 101 is also provided with a detachable triangular foot 28, which can further improve the stability of the powder loading device when the ground is unstable. Two support columns 102 are provided on the base 101, and slide rails 8 are provided on the support columns 102. A slider 9 is connected between the slide rail 8 and the sliding bracket 2, and the lifting and lowering of the sliding bracket 2 is realized by connecting the slider 9; an upper limit bracket 24 is also provided on the top of the loading rack 1, and a lower limit bracket 25 is provided on the bottom of the loading rack 1. When the sliding bracket 2 abuts against the limit bracket, the lifting and lowering is stopped, and the upper limit bracket 24 and the lower limit bracket 25 are used to control the rising and falling range of the powder hopper 3, thereby avoiding damage caused by excessive rising or falling of the powder hopper 3.

[0038] It can be understood that by providing a movable roller 20 on the base 101, the flexibility of the powder coating device is improved, and it is convenient to move the position of the powder coating device according to different positions of the 3D printer; by providing a fixed foot seat 21, the stability of the powder coating device is improved; the slide rail 8 is connected to the sliding bracket 2 through the slider 9, so that the sliding bracket 2 can be raised and lowered.

[0039] Furthermore, a support frame 10 is provided on one side of the loading frame 1, and an electric hoist 11 is provided on the support frame 10. The electric hoist 11 is connected to at least one hoisting wire rope 12. The hoisting wire rope 12 is wound around a first pulley 13 above the loading frame 1 and extends downward and is connected to the sliding bracket 2. Figure 1-2 As shown, a support frame 10 is also provided on one side of the loading rack 1, and an electric hoist 11 is provided on the support frame 10. The electric hoist 11 is connected to two hoisting wire ropes 12. A lifting ring 22 and a first pulley 13 are provided on the top of the loading rack 1. The hoisting wire rope 12 is wound around the first pulley 13 above the loading rack 1 and extends downward. After being wound around two second pulleys 201 provided on the sliding bracket 2, one end is connected to the eye hook 23 and connected to the lifting ring 22. The hoisting wire rope 12 is retracted by the electric hoist 11, and the second pulley 201 serves as a fulcrum for the hoisting wire rope 12 to lift the sliding bracket 2, thereby realizing the lifting and lowering of the sliding bracket 2.

[0040] Furthermore, the pollination assembly 5 includes a housing 503 mounted on the turntable 4, a spiral discharge shaft 504 disposed in the housing 503, and a drive motor 505 disposed on the turntable 4, wherein the output end of the drive motor 505 is connected to the spiral discharge shaft 504 via a transmission member; and a discharge port 502 and a feed port 501 are disposed on the housing 503. Figure 7-8As shown, one end of the spiral discharge shaft 504 is connected to a pulley 507, and the pulley 507 is connected to the driving motor 505 through a belt 506. The driving motor 505 drives the spiral discharge shaft 504 to rotate, thereby transporting the powder from the feed port 501 to the discharge port 502. Figure 4 As shown, a first sealing ring 17 is also provided at the feed inlet 501 to improve the sealing performance when the powder enters the pollination assembly 5 .

[0041] It can be understood that by installing the outer shell 503 on the turntable 4, the rotation of the pollination component 5 is realized. At the same time, the outer shell 503 can form a sealed space to prevent the powder from scattering during the powder feeding process; by the rotation of the spiral discharge shaft 504 in the outer shell 503, the powder is transported from the feed port 501 to the discharge port 502; the spiral discharge shaft 504 is connected by a driving motor 505 to provide rotational power for the spiral discharge shaft 504.

[0042] Furthermore, the discharge port 502 is provided with a discharge guide mechanism 14, so as to facilitate the powder material of the discharge port 502 to accurately enter the feed port of the binder jet 3D printer, thereby preventing the powder material from leaking out.

[0043] Furthermore, the discharge guide mechanism 14 includes a guide tube 1403 disposed below the discharge port 502, a sliding tube 1404 is disposed in the guide tube 1403, a control board 1405 is disposed outside the guide tube 1403, the control board 1405 is connected to the guide tube 1403 and the sliding tube 1404 through a radial guide shaft 1402, a spring bracket 1401 connected to the pollination assembly 5 is also disposed outside the control board 1405, the spring bracket 1401 is connected to the control board 1405 through a pin 1406, and one side of the spring bracket 1401 is also connected to the guide shaft 1402 through a spring. Figure 6-8 As shown, the upper end of the guide tube 1403 is fixedly connected to the housing 503, and the guide tube 1403 is also provided with a movable hole 19 for facilitating the upward and downward movement of the guide shaft 1402. The control board 1405 is connected to the spring bracket 1401 through a pin 1406, thereby realizing the rotation of the control board 1405. Figure 7 As shown, the control plate 1405 is composed of two ear plates connected by a connecting rod, the ear plate is L-shaped, and the connecting rod is set at the ends of the two ear plates; a long hole 1407 is provided on the ear plate of the control plate 1405, and the setting of the long hole 1407 should ensure that when the control plate 1405 rotates, the guide shaft 1402 can move up and down.

[0044] It is understandable that the guide tube 1403 has a movable hole 19 for the guide shaft 1402 to move up and down, so that the guide shaft 1402 can only move up and down. Figure 6As shown in the figure, the control plate 1405 is in a state of not applying powder, and the sliding tube 1404 is higher than the discharge port 502; when applying powder, the control plate 1405 rotates counterclockwise around the pin 1406, and the guide shaft 1402 abutting against the long hole 1407 of the control plate 1405 moves downward under the limit of the guide tube 1403, and at the same time, the sliding tube 1404 connected to the guide shaft 1402 is lowered. Figure 7 As shown, at this time, the control plate 1405 is in the powder loading state, and the sliding tube 1404 is lower than the discharge port 502; when the powder loading is finished, under the action of the limit of the guide tube 1403 and the spring tension, the control plate 1405 rotates clockwise around the pin shaft 1406, and the guide shaft 1402 drives the sliding tube 1404 to rise. Among them, when the sliding tube 1404 rises higher than the discharge port 502, the powder in the powder transfer component 5 can be prevented from leaking out; when the sliding tube 1404 falls below the discharge port 502, the powder can smoothly enter the discharge port 502. By setting the discharge guide mechanism 14, the working efficiency of powder loading is effectively improved, and at the same time, the leakage of powder after the powder loading is completed is avoided.

[0045] In addition, if Figure 3 As shown, the 3D printer feed port is equipped with a touch panel 26 abutting against the control panel 1405. When the powder hopper 3 descends, the touch panel 26 abuts against the control panel 1405, automatically completing the counterclockwise rotation of the control panel 1405, completing the descent of the sliding tube 1404 and docking with the 3D printer feed port. When the powder hopper 3 rises, the control panel 1405 is separated from the touch panel 26, and the control panel 1405 automatically rotates clockwise under the action of the spring, completing the ascent of the sliding tube 1404 and ending the powder loading. The process has a high degree of automation and effectively improves work efficiency. A second sealing ring 18 is also provided at the lower part of the guide tube 1403 to prevent powder from floating into the air.

[0046] Furthermore, a material rack housing 15 is provided on the outside of the material rack 1, and the material rack housing 15 is provided with a lifting hole 1501; a powder hopper housing 16 is provided on the outside of the powder hopper 3, and the powder hopper housing 16 is provided with a rotating hole 1601. Fig.10 As shown, the operating surface on the back of the material rack housing 15 is a convex structure, and a control switch 1502 for controlling the operation of the powder loading device is arranged at the horizontal position of the convex structure. A control motor for controlling the operation of the powder loading device is also arranged inside the convex structure. Through the control switch 1502, the lifting and lowering of the sliding bracket 2 and the rotation of the powder transfer component 5 can be controlled, thereby improving the degree of automation of the utility model and the powder loading efficiency.

[0047] like Figure 9-10As shown, a lifting hole 1501 is provided on the front working surface of the material rack shell 15, and the powder hopper bracket 6 passes through the lifting hole 1501; a moving handle 1503 is also provided on the back operating surface of the material rack shell 15, which is convenient for the staff to move the powder loading device; a powder hopper 3 shell 503 is provided on the outer side of the powder hopper 3, and the powder hopper shell 16 wraps the turntable bracket 7, the powder hopper 3 and the pollination component 5. The powder hopper shell 16 leaks out of the upper part of the powder hopper 3, and a rotating hole 1601 is provided at the lower part of the powder hopper shell 16. The feed port 501 of the pollination component 5 extends out of the rotating hole 1601, which is convenient for the pollination component 5 to rotate and adjust the direction.

[0048] It is understandable that by providing the material rack housing 15 and the powder hopper housing 16, a dust-proof effect can be achieved; the lifting hole 1501 provides a lifting space for the powder hopper bracket 6; and the rotating hole 1601 provides a rotating space for the pollination component 5.

[0049] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic powder loading device for a binder jet 3D printer, comprising a loading rack (1), characterized in that: The loading rack (1) is provided with a liftable sliding bracket (2), a powder hopper (3) is provided on one side of the sliding bracket (2), a turntable (4) is connected below the sliding bracket (2), a pollination component (5) extending outward is provided above the turntable (4), a feed port (501) is provided on the pollination component (5), the feed port (501) is connected to the powder hopper (3), and a discharge port (502) is provided at one end of the pollination component (5) away from the feed port (501).

2. The automatic powder loading device for a binder jet 3D printer according to claim 1, characterized in that: A powder hopper bracket (6) is provided on one side of the sliding bracket (2), and the powder hopper bracket (6) is connected to and mounted on the powder hopper (3); a turntable bracket (7) is provided below the sliding bracket (2), and the turntable (4) is mounted on the horizontal portion of the turntable bracket (7).

3. The automatic powder loading device for a binder jet 3D printer according to claim 1, characterized in that: The loading rack (1) comprises a base (101), a movable roller (20) and a fixed footrest (21) are arranged below the base (101), a support column (102) is arranged on the base (101), a vertical slide rail (8) is arranged on the support column (102), and the sliding bracket (2) is connected to the slide rail (8) via a slider (9).

4. The automatic powder loading device for a binder jet 3D printer according to claim 1, characterized in that: A support frame (10) is also provided on one side of the loading frame (1), and an electric hoist (11) is provided on the support frame (10). The electric hoist (11) is connected to at least one hoisting wire rope (12). The hoisting wire rope (12) is wound around a first pulley (13) above the loading frame (1), extends downward, and is connected to the sliding bracket (2).

5. The automatic powder loading device for a binder jet 3D printer according to claim 1, characterized in that: The pollination assembly (5) comprises a housing (503) mounted on the turntable (4), a spiral discharge shaft (504) arranged in the housing (503), and a drive motor (505) arranged on the turntable (4), wherein the output end of the drive motor (505) is connected to the spiral discharge shaft (504) via a transmission member; the housing (503) is provided with the discharge port (502) and the feed port (501).

6. The automatic powder loading device for a binder jet 3D printer according to claim 1, characterized in that: The discharge port (502) is provided with a discharge guiding mechanism (14).

7. The automatic powder loading device for a binder jet 3D printer according to claim 6, characterized in that: The discharge guide mechanism (14) comprises a guide tube (1403) arranged below the discharge port (502), a sliding tube (1404) being arranged inside the guide tube (1403), a control plate (1405) being arranged on the outer side of the guide tube (1403), the control plate (1405) being connected to the guide tube (1403) and the sliding tube (1404) via a radial guide shaft (1402), a spring bracket (1401) connected to the pollination assembly (5) being also arranged on the outer side of the control plate (1405), the spring bracket (1401) being connected to the control plate (1405) via a pin shaft (1406), and one side of the spring bracket (1401) being also connected to the guide shaft (1402) via a spring.

8. The automatic powder loading device for a binder jet 3D printer according to claim 1, characterized in that: A material rack shell (15) is arranged on the outside of the loading rack (1), and the material rack shell (15) is provided with a lifting hole (1501); a powder hopper shell (16) is arranged on the outside of the powder hopper (3), and the powder hopper shell (16) is provided with a rotating hole (1601).

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