A fixed powder falling device for a 3D printer

Abstract

The application discloses a fixed powder falling device for a 3D printer and relates to the technical field of powder falling of a 3D printer. The device comprises two supporting plates, rectangular holes are formed in one side of the two supporting plates, transmission plates are slidably connected in the two rectangular holes, one hopper is fixed on one side of the two transmission plates, a vibrating assembly is arranged in one of the rectangular holes, the vibrating assembly is used for driving the hopper to vibrate up and down, connecting holes are formed in one side of the two supporting plates, a partition plate is slidably connected in the two connecting holes, and a connecting barrel is arranged on the top of the partition plate. The distance between the partition plate and the bottom plate can be adjusted, the volume inside the hollow barrel and the sleeve is adjusted, the total amount of powder materials contained in the hollow barrel and the sleeve is changed, the discharging amount of the powder materials is realized, and different 3D printing work can be satisfied.

Description

Technical Field

[0001] This invention relates to the field of 3D printer toner dispensing technology, and in particular to a fixed toner dispensing device for 3D printers. Background Technology

[0002] A 3D printer, also known as a three-dimensional printer, is a type of cumulative manufacturing technology, or rapid prototyping technology. It is based on a digital model file and uses special waxes, powdered metals, or plastics as adhesive materials to create three-dimensional objects by printing layers of adhesive materials. Special waxes, powdered metals, or plastics are used as materials for 3D printers. When feeding powdered materials, a fixed powder feeding device is required for 3D printers.

[0003] Chinese invention patent CN108908936A discloses a fixed powder-dispensing device for a 3D printer, including a base plate, side box plate, drive mechanism, moving block, intermediate frame, rotating shaft, moving plate, bottom plate and scraper. The lower end of the side box plate is welded to the base plate, and a guide rail is horizontally provided on the inner wall of the side box plate. The drive mechanism consists of a flange sleeve, servo motor, planetary gear reducer, rotating shaft one, rotating shaft two, synchronous pulley and synchronous belt. The upper end of the moving block is fixedly connected to the synchronous belt, and the lower end of the moving block is connected to the end of the scraper. The intermediate frame is provided with mounting holes and is connected to the printer housing through the mounting holes. The rotating shaft is connected to the upper end of the intermediate frame through a bearing seat. Gears are provided at both ends of the rotating shaft, and a rack is provided at the upper end of the moving plate.

[0004] The technical solution has the following shortcomings: In this technical solution, powdered materials are fed by a scraper. However, the scraper inevitably causes some of the powdered material to deviate from the feeding point, resulting in material loss during the feeding process and thus a certain degree of waste. Summary of the Invention

[0005] The purpose of this invention is to provide a fixed powder feeding device for 3D printers to solve the technical problem of material waste caused by the feeding process in the prior art.

[0006] This invention provides a fixed powder feeding device for a 3D printer, comprising two support plates. Each support plate has a rectangular hole on one side, and a transmission plate is slidably connected within each rectangular hole. A common hopper is fixed to one side of each transmission plate. A vibration component is disposed within one of the rectangular holes, driving the hopper to vibrate up and down. Each support plate has a connecting hole on one side, and a common partition is slidably connected within each connecting hole. A connecting cylinder is disposed at the top of the partition, and a discharge pipe is disposed at the bottom of the hopper, slidably disposed within the connecting cylinder. Connecting components are provided at both ends of one side. A base plate is provided at the bottom of the connecting components. A groove is provided at the top of the base plate. A material discharge hole is opened on one side of the bottom of the groove. A sleeve is slidably connected to the bottom of the groove. A hollow cylinder is slidably arranged inside the sleeve. The hollow cylinder passes through the top of the partition plate and is flush with the top of the partition plate. A second transmission wheel is rotatably arranged on one side of the top of one of the support plates. A rotating shaft is fixed on one side of the second transmission wheel. A material discharge component is rotatably connected to one end of the rotating shaft. The material discharge component is located directly above the material discharge hole. The second transmission wheel and the vibration component form a transmission cooperation.

[0007] Preferably, the two support plates are fixed to the same mounting plate on one side, and a second electric telescopic rod is provided at the bottom of the mounting plate, and the output end of the second electric telescopic rod is connected to the base plate.

[0008] Preferably, the vibration assembly includes a first electric telescopic rod disposed on the support plate, the output end of the first electric telescopic rod is provided with a rack plate, and the rack plate is connected to the partition plate. A baffle is provided on the top of the rack plate, and a transmission block is provided at the bottom of the transmission plate. The bottom of the transmission block has a wave-shaped structure.

[0009] Preferably, the bottom of the rectangular hole is provided with a plurality of equally spaced limiting rods, and the limiting rods are all slidably connected to the transmission plate. The top inner wall of the rectangular hole is fixed with a plurality of second springs, and the second springs are connected to the transmission plate.

[0010] Preferably, a gear is rotatably connected to one side of one of the support plates, a first transmission wheel is fixed to one side of the gear, and the gear meshes with the rack plate. The same transmission belt is sleeved on the outer side of the first transmission wheel and the second transmission wheel.

[0011] Preferably, the feeding assembly includes a disc rotatably connected to one end of a rotating shaft. A protrusion is provided on the outer wall of the disc, and a connecting rod is rotatably connected to one side of the protrusion. A first fixing plate and a second fixing plate, distributed vertically, are fixed on the opposite outer walls of the two support plates. Both the first fixing plate and the second fixing plate have circular holes. The same connecting rod is slidably connected in the two circular holes. The top of the connecting rod and the connecting rod are rotatably connected. A connecting plate is fixed on the outer wall of the connecting rod between the first fixing plate and the second fixing plate. A first spring is provided on the top of the connecting plate, and the top of the first spring is connected to the first fixing plate. A rubber disc with a conical structure is provided at the bottom of the connecting rod.

[0012] Preferably, a transmission seat is fixed at one end of the rotating shaft near the disk, a connecting seat is fixed on the outer wall of the transmission seat, and a cavity is formed inside the connecting seat.

[0013] Preferably, a lever is slidably connected inside the cavity, one side of the lever has an inclined structure, and magnets are provided on both the outer wall of the lever side and the inner wall of the cavity side.

[0014] Preferably, the connecting component includes a guide block, which is disposed on the support plate. The top of the guide block has a through hole, and a guide rod is slidably connected in the through hole, and the guide rod is connected to the base plate.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) The present invention, through the partition, hopper, feeding pipe and feeding component, can adjust the distance between the partition and the bottom plate by working the feeding component during use, thereby adjusting the internal volume of the hollow cylinder and the sleeve, so that the total amount of powder material contained in the hollow cylinder and the sleeve changes, thereby realizing the feeding amount of powder material to meet various different 3D printing work.

[0016] (2) The present invention, through the arrangement of a disc, a protrusion, a connecting rod, a linking rod, a first spring, and a limiting plate, enables the connecting seat to rotate during use by rotating the transmission seat. During the rotation of the connecting seat, the protrusion on the disc is pushed to rotate by a lever. As the protrusion rotates from directly below the disc to directly above the disc, the protrusion drives the linking rod to rise through the linking rod, and then compresses the first spring through the limiting plate. When the protrusion rotates from directly above the disc downwards, the disc rotates rapidly through the linking rod and the linking rod under the action of the first spring, which in turn causes the linking rod to descend rapidly. This causes the conical rubber disc to squeeze the hollow cylinder on the partition. Due to the deformation of the conical rubber disc, the gas inside the rubber disc quickly enters the hollow cylinder, and the powdery material in the hollow cylinder and the sleeve is output through the discharge hole, ensuring the output of the material and avoiding material waste.

[0017] (3) The present invention, through the first electric telescopic rod, rack plate, baffle, transmission block, transmission plate and hopper, can realize that during use, the rack plate is driven to move by the first electric telescopic rod. During the movement of the rack plate, the baffle moves along the bottom of the transmission block. The bottom of the transmission block has a wave-shaped structure. With the action of the second spring, the transmission plate vibrates up and down, which in turn drives the hopper to vibrate up and down. This allows the powder material in the hopper to be stably output through the feeding pipe, avoiding the accumulation of material in the feeding pipe and ensuring the normal operation of 3D printing. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is the invention Figure 1 Enlarged view of a portion of point A in the middle; Figure 3 This is a schematic diagram of the base plate and partition structure of the present invention; Figure 4 This is a cross-sectional view of one of the support plate portions of the present invention; Figure 5 This is a schematic diagram of the transmission seat, connecting seat, lever, disc, and protrusion structure of the present invention. Figure 6 This is a cross-sectional structural diagram of the connecting seat portion of the present invention.

[0020] Figure label: 1. Support plate; 2. First electric telescopic rod; 3. Rack plate; 4. Baffle; 5. Slide groove; 6. First transmission wheel; 7. Gear; 8. Transmission belt; 9. Second transmission wheel; 10. Rotating shaft; 11. Disc; 12. Transmission seat; 13. Protrusion; 14. Connecting rod; 15. First fixing plate; 16. First spring; 17. Connecting plate; 18. Connecting rod; 19. Second fixing plate; 20. Guide rod; 21. Guide block; 22. Base plate; 23. Discharge hole; 24. Rubber disc; 25. Transmission plate; 26. Second spring; 27. Limiting rod; 28. Mounting plate; 29. ​​Second electric telescopic rod; 30. Partition plate; 31. Hopper; 32. Transmission block; 33. Discharge pipe; 34. Connecting cylinder; 35. Hollow cylinder; 36. Sleeve; 37. Connecting seat; 38. Pulley; 39. Magnet. Detailed Implementation

[0021] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0022] The components of the embodiments of the invention described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0023] Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0026] The following is combined with Figures 1 to 6As shown, this embodiment of the invention provides a fixed powder feeding device for a 3D printer, including two support plates 1. Each support plate 1 has a rectangular hole on one side, and a transmission plate 25 is slidably connected to each of the two rectangular holes. A common hopper 31 is fixed to one side of each of the two transmission plates 25. A vibration component is installed in one of the rectangular holes to drive the hopper 31 to vibrate up and down. Each support plate 1 has a connecting hole on one side, and a common partition plate 30 is slidably connected to each of the two connecting holes. A connecting cylinder 34 is installed at the top of the partition plate 30, and a discharge pipe 33 is installed at the bottom of the hopper 31, and the discharge pipe 33 is slidably disposed within the connecting cylinder 34. 1. Connecting components are provided at both ends of one side. A base plate 22 is provided at the bottom of the connecting components. A sliding groove 5 is provided at the top of the base plate 22. A material discharge hole 23 is provided on one side of the bottom of the sliding groove 5. A sleeve 36 is slidably connected to the bottom of the sliding groove 5. A hollow cylinder 35 is slidably provided inside the sleeve 36. The hollow cylinder 35 passes through the top of the partition 30, and the top of the hollow cylinder 35 is flush with the top of the partition 30. A second transmission wheel 9 is rotatably provided on one side of the top of one of the support plates 1. A rotating shaft 10 is fixed on one side of the second transmission wheel 9. A material discharge component is rotatably connected to one end of the rotating shaft 10. The material discharge component is located directly above the material discharge hole 23. The second transmission wheel 9 and the vibration component form a transmission cooperation.

[0027] When the hollow cylinder 35 and the sleeve 36 slide relative to each other, the internal volume of the hollow cylinder 35 and the sleeve 36 is adjusted, thereby changing the total amount of powder material contained inside the hollow cylinder 35 and the sleeve 36, thus realizing the feeding amount of powder material to meet various different 3D printing tasks.

[0028] Furthermore, the same mounting plate 28 is fixed to one side of the two support plates 1, and a second electric telescopic rod 29 is provided at the bottom of the mounting plate 28, and the output end of the second electric telescopic rod 29 is connected to the base plate 22.

[0029] When the switch of the second electric telescopic rod 29 is turned on, the second electric telescopic rod 29 drives the base plate 22 to descend along the guide rod 20, thereby causing the base plate 22 to move away from the partition 30, and thus causing the hollow cylinder 35 and the sleeve 36 to slide relative to each other.

[0030] Furthermore, the vibration assembly includes a first electric telescopic rod 2 mounted on the support plate 1. The output end of the first electric telescopic rod 2 is provided with a rack plate 3, and the rack plate 3 is connected to the partition plate 30. A baffle 4 is provided on the top of the rack plate 3. A transmission block 32 is provided at the bottom of the transmission plate 25. The bottom of the transmission block 32 has a wave-shaped structure. Multiple equally spaced limiting rods 27 are provided at the bottom of the rectangular hole, and the limiting rods 27 are all slidably connected to the transmission plate 25. Multiple second springs 26 are fixed on the inner wall of the top of the rectangular hole, and the second springs 26 are connected to the transmission plate 25.

[0031] The rack plate 3 is driven to move by the first electric telescopic rod 2. During the movement of the rack plate 3, the baffle 4 moves along the bottom of the transmission block 32. The bottom of the transmission block 32 has a wave-shaped structure. With the action of the second spring 26, the transmission plate 25 vibrates up and down along the limiting rod 27, which in turn drives the hopper 31 to vibrate up and down. This allows the powder material in the hopper 31 to be stably output through the feeding pipe 33, avoiding the accumulation of material in the feeding pipe 33 and ensuring the normal operation of 3D printing.

[0032] Furthermore, a gear 7 is rotatably connected to one side of one of the support plates 1, a first transmission wheel 6 is fixed to one side of the gear 7, and the gear 7 meshes with the rack plate 3. The same transmission belt 8 is sleeved on the outer side of the first transmission wheel 6 and the second transmission wheel 9.

[0033] During the movement of the rack plate 3, the drive gear 7 rotates, and the rotation of the gear 7 drives the rotating shaft 10 to rotate through the first transmission wheel 6, the transmission belt 8 and the second transmission wheel 9.

[0034] Furthermore, the feeding assembly includes a disc 11 rotatably connected to one end of the rotating shaft 10. A protrusion 13 is provided on the outer wall of the disc 11. A connecting rod 14 is rotatably connected to one side of the protrusion 13. A first fixing plate 15 and a second fixing plate 19 are fixed on the opposite outer walls of the two support plates 1. Both the first fixing plate 15 and the second fixing plate 19 have round holes. The same connecting rod 18 is slidably connected in the two round holes. The tops of the connecting rod 14 and the connecting rod 18 are rotatably connected. A connecting plate 17 is fixed on the outer wall of the connecting rod 18 between the first fixing plate 15 and the second fixing plate 19. A first spring 16 is provided on the top of the connecting plate 17, and the top of the first spring 16 is connected to the first fixing plate 15. A rubber disc 24 is provided at the bottom of the connecting rod 18. The rubber disc 24 has a conical structure. A transmission seat 12 is fixed at one end of the rotating shaft 10 near the disc 11. A connecting seat 37 is fixed on the outer wall of the transmission seat 12. A cavity is provided inside the connecting seat 37.

[0035] During the rotation of the shaft 10, the transmission seat 12 rotates, driving the connecting seat 37 to rotate. During the rotation of the connecting seat 37, the pusher block 38 pushes the protrusion 13 on the disc 11 to rotate. As the protrusion 13 rotates from directly below the disc 11 to directly above the disc 11, the protrusion 13 drives the connecting rod 18 to rise through the connecting rod 14, which in turn compresses the first spring 16 through the connecting plate 17. When the protrusion 13 rotates from directly above the disc 11 downwards, under the action of the first spring 16, the connecting rod 18 and the connecting rod 14 drive the disc 11 to rotate rapidly, which in turn causes the connecting rod 18 to descend rapidly. This causes the conical rubber disc 24 to squeeze the hollow cylinder 35 on the partition plate 30. Due to the deformation of the conical rubber disc 24, the gas inside the rubber disc 24 quickly enters the hollow cylinder 35, which in turn causes the powdered material in the hollow cylinder 35 and the sleeve 36 to be output through the discharge hole 23, ensuring the output of the material and avoiding material waste.

[0036] Furthermore, a lever 38 is slidably connected inside the cavity. One side of the lever 38 has a sloping structure, and magnets 39 are provided on both the outer wall of one side of the lever 38 and the inner wall of one side of the cavity.

[0037] After completing one feeding operation, the rack plate 3 is driven to move in the opposite direction by the first electric telescopic rod 2, which in turn drives the rotating shaft 10 to rotate in the opposite direction through the gear 7, the first transmission wheel 6, the transmission belt 8 and the second transmission wheel 9. This, in turn, drives the transmission seat 12 and the connecting seat 37 to rotate in the opposite direction. Since one side of the lever 38 has an inclined structure, when the lever 38 approaches the protrusion 13, the inclined structure of the lever 38 causes the lever 38 to retract into the cavity, which increases the repulsive force between the two magnets 39. When the lever 38 is no longer in contact with the protrusion 13, the lever 38 is reset by the force between the two magnets 39, ready for the next feeding operation.

[0038] Furthermore, the connecting assembly includes a guide block 21, which is disposed on the support plate 1. A through hole is provided on the top of the guide block 21, and a guide rod 20 is slidably connected in the through hole, and the guide rod 20 is connected to the base plate 22.

[0039] The movement of the base plate 22 is restricted by the guide rod 20, so that the base plate 22 has a higher degree of stability during movement.

[0040] The specific working method is as follows: During use, powdered material is poured into the hopper 31. The powdered material in the hopper 31 enters the feeding pipe 33. At this time, the hollow cylinder 35 on the partition 30 and the feeding pipe 33 are connected, and the material enters the hollow cylinder 35 and the sleeve 36 through the feeding pipe 33. The switch of the second electric telescopic rod 29 is turned on, and the second electric telescopic rod 29 drives the base plate 22 to descend along the guide rod 20, thereby moving the base plate 22 away from the partition 30. This causes the hollow cylinder 35 and the sleeve 36 to slide relative to each other, thus adjusting the internal volume of the hollow cylinder 35 and the sleeve 36, changing the total amount of powdered material contained inside the hollow cylinder 35 and the sleeve 36, thereby achieving the feeding amount of powdered material to meet various different 3D printing needs. Then, through the first... The electric telescopic rod 2 drives the rack plate 3 to move. During the movement of the rack plate 3, the baffle 4 moves along the bottom of the transmission block 32. The bottom of the transmission block 32 has a wave-shaped structure. With the action of the second spring 26, the transmission plate 25 vibrates up and down along the limiting rod 27, which in turn drives the hopper 31 to vibrate up and down. This allows the powder material in the hopper 31 to be stably output through the feeding pipe 33, avoiding material accumulation in the feeding pipe 33 and ensuring the normal operation of 3D printing. During the movement of the rack plate 3, the gear 7 is driven to rotate. During the rotation of the gear 7, the first transmission wheel 6, the transmission belt 8, and the second transmission wheel 9 drive the rotating shaft 10 to rotate. During the rotation of the rotating shaft 10, the transmission seat 12 rotates, driving the connecting seat 37 to rotate. During the rotation of seat 37, the cam block 38 pushes the protrusion 13 on disk 11 to rotate. As the protrusion 13 rotates from directly below disk 11 to directly above disk 11, the protrusion 13 drives the connecting rod 18 to rise via connecting rod 14, which in turn compresses the first spring 16 via connecting plate 17. When the protrusion 13 rotates downward from directly above disk 11, under the action of the first spring 16, the connecting rod 18 and connecting rod 14 drive disk 11 to rotate rapidly, which in turn causes the connecting rod 18 to descend rapidly. This causes the conical rubber disc 24 to squeeze the hollow cylinder 35 on partition 30. Due to the deformation of the conical rubber disc 24, the gas inside the rubber disc 24 quickly enters the hollow cylinder 35, thereby causing the hollow cylinder 35 and sleeve 36 to... The powdered material is output through the feeding hole 23, ensuring the output of the material and avoiding waste. After completing one feeding operation, the rack plate 3 is driven to move in the opposite direction by the first electric telescopic rod 2, and then the rotating shaft 10 is driven to rotate in the opposite direction by the gear 7, the first transmission wheel 6, the transmission belt 8 and the second transmission wheel 9, which in turn drives the transmission seat 12 and the connecting seat 37 to rotate in the opposite direction. Since one side of the lever 38 has a sloping structure, when the lever 38 approaches the protrusion 13, the sloping structure of the lever 38 causes the lever 38 to retract into the cavity, which increases the repulsive force between the two magnets 39. When the lever 38 is no longer in contact with the protrusion 13, the lever 38 is reset by the force between the two magnets 39, ready for the next feeding operation.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A fixed powder dispensing device for a 3D printer, characterized in that, The device includes two support plates (1), each with a rectangular hole on one side. A transmission plate (25) is slidably connected to each of the two rectangular holes. A hopper (31) is fixed to one side of each of the two transmission plates (25). A vibration component is installed in one of the rectangular holes to drive the hopper (31) to vibrate up and down. A connecting hole is provided on one side of each of the two support plates (1), and a partition plate (30) is slidably connected to each of the two connecting holes. A connecting cylinder (34) is provided at the top of the partition plate (30). A discharge pipe (33) is provided at the bottom of the hopper (31), and the discharge pipe (33) is slidably installed in the connecting cylinder (34). A connecting component is provided at both ends of one side of each of the two support plates (1). A base plate (22) is provided at the bottom of the component. A groove (5) is provided at the top of the base plate (22). A feeding hole (23) is provided on one side of the bottom of the groove (5). A sleeve (36) is slidably connected to the bottom of the groove (5). A hollow cylinder (35) is slidably provided inside the sleeve (36). The hollow cylinder (35) penetrates the top of the partition (30), and the top of the hollow cylinder (35) is flush with the top of the partition (30). A second transmission wheel (9) is rotatably provided on one side of the top of one of the support plates (1). A rotating shaft (10) is fixed on one side of the second transmission wheel (9). A feeding assembly is rotatably connected to one end of the rotating shaft (10). The feeding assembly is located directly above the feeding hole (23). The second transmission wheel (9) and the vibration assembly form a transmission cooperation. The feeding assembly includes a disc (11) rotatably connected to one end of a rotating shaft (10). A protrusion (13) is provided on the outer wall of the disc (11). A connecting rod (14) is rotatably connected to one side of the protrusion (13). A first fixing plate (15) and a second fixing plate (19) are fixed on the opposite outer walls of the two support plates (1). A circular hole is provided on both the first fixing plate (15) and the second fixing plate (19). The same connecting rod (18) is slidably connected in the two circular holes. The top of the connecting rod (14) and the connecting rod (18) are rotatably connected. A connecting plate (17) is fixed on the outer wall of the connecting rod (18) between the first fixing plate (15) and the second fixing plate (19). A first spring (16) is provided on the top of the connecting plate (17), and the top of the first spring (16) is connected to the first fixing plate (15). A rubber disc (24) is provided at the bottom of the connecting rod (18). The rubber disc (24) has a conical structure.

2. The fixed powder dispensing device for a 3D printer according to claim 1, characterized in that, The two support plates (1) are fixed with the same mounting plate (28) on one side. The bottom of the mounting plate (28) is provided with a second electric telescopic rod (29), and the output end of the second electric telescopic rod (29) is connected to the base plate (22).

3. The fixed powder dispensing device for a 3D printer according to claim 1, characterized in that, The vibration assembly includes a first electric telescopic rod (2) mounted on a support plate (1). The output end of the first electric telescopic rod (2) is provided with a rack plate (3), and the rack plate (3) is connected to the partition plate (30). A baffle (4) is provided on the top of the rack plate (3), and a transmission block (32) is provided at the bottom of the transmission plate (25). The bottom of the transmission block (32) has a wave-shaped structure.

4. A fixed powder dispensing device for a 3D printer according to claim 3, characterized in that, The bottom of the rectangular hole is provided with multiple equally spaced limiting rods (27), and the limiting rods (27) are all slidably connected to the transmission plate (25). The inner wall of the top of the rectangular hole is fixed with multiple second springs (26), and the second springs (26) are connected to the transmission plate (25).

5. A fixed powder dispensing device for a 3D printer according to claim 3, characterized in that, One of the support plates (1) is rotatably connected to a gear (7), and a first transmission wheel (6) is fixed on one side of the gear (7). The gear (7) meshes with the rack plate (3), and the first transmission wheel (6) and the second transmission wheel (9) are fitted with the same transmission belt (8).

6. A fixed powder dispensing device for a 3D printer according to claim 1, characterized in that, A transmission seat (12) is fixed at one end of the rotating shaft (10) near the disc (11). A connecting seat (37) is fixed on the outer wall of the transmission seat (12). A cavity is opened inside the connecting seat (37).

7. A fixed powder dispensing device for a 3D printer according to claim 6, characterized in that, A lever (38) is slidably connected inside the cavity. One side of the lever (38) has an inclined structure. Magnets (39) are provided on the outer wall of one side of the lever (38) and the inner wall of one side of the cavity.

8. A fixed toner dispensing device for a 3D printer according to claim 1, characterized in that, The connecting component includes a guide block (21), which is disposed on the support plate (1). A through hole is provided on the top of the guide block (21), and a guide rod (20) is slidably connected in the through hole. The guide rod (20) is connected to the base plate (22).

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