Rapid and efficient powder cleaning mechanism for additive manufacturing apparatus

Abstract

A rapid and efficient powder cleaning mechanism for an additive manufacturing apparatus. Said powder cleaning mechanism comprises a printing compartment (1), a material discharging perforated plate (2), a powder laying assembly (3) and a printing compartment bottom plate (4), wherein the printing compartment (1) is a frame body of a square structure, the printing compartment bottom plate (4) is horizontally fixed on the bottom end surface of the printing compartment (1), the printing compartment (1) is internally and horizontally provided with the material discharging perforated plate (2) located on the top face of the printing compartment bottom plate (4), the material discharging perforated plate (2) is provided with a plurality of powder discharging holes (21) in a full-breadth pore-opening mode, and the powder laying assembly (3) is arranged in the printing compartment (1).

Description

Fast and efficient powder cleaning mechanism for additive manufacturing equipment

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on August 8, 2023, with application number 202310989179.7, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the technical field of powder cleaning mechanisms for additive manufacturing, and for example, to a fast and efficient powder cleaning mechanism for additive manufacturing equipment. Background Art

[0003] Additive manufacturing, commonly known as 3D printing, is a technology that integrates computer-aided design, material processing and molding technology. It is based on digital model files and uses software and numerical control systems to stack special metal materials, non-metallic materials and medical biomaterials layer by layer in accordance with extrusion, sintering, melting, light curing, spraying and other methods to produce physical objects. Additive manufacturing equipment is developing in the direction of large-scale format and large-scale height. In order to meet the printing needs of large-sized parts, such equipment needs to be equipped with a larger-sized forming cylinder. After the part is printed, more powder is stored in the cylinder. The current conventional practice for cleaning powder is to gradually raise the part after printing, sweep a large amount of powder into the powder recovery pipe with a brush, and then use a powder suction device to clean a small amount of residual powder, or directly use a powder suction device to suck the powder into the recovery pipe.

[0004] However, when the additive manufacturing powder is recovered as mentioned above, manpower is required to use a brush to operate the powder suction device to recover the powder. This results in the need for manpower to slowly gather the powder during recovery, which consumes a lot of manpower and time. At the same time, manual recovery has a high manpower cost and wastes manufacturing costs. At the same time, when collecting powder, a large amount of powder accumulates during the lifting process of the parts, and the powder overflows during the rising process, causing the powder to enter the air duct and other parts, which is difficult to clean up later. At the same time, when recovering powder, due to the different proficiency of the operators, there are uncertainties when recovering powder, and the cleaning process has the problem of incomplete powder cleaning and powder residue.

[0005] Summary of the Invention

[0006] The present application provides a fast and efficient powder cleaning mechanism for additive manufacturing equipment, aiming to improve the above-mentioned problems.

[0007] An embodiment of the present application provides a fast and efficient powder cleaning mechanism for additive manufacturing equipment, including a printing bin, a blanking hole plate, a powder spreading assembly and a printing bin bottom plate, wherein the printing bin bottom plate is horizontally fixed on the bottom end surface of the printing bin, a blanking hole plate located on the top surface of the printing bin bottom plate is horizontally arranged inside the printing bin, and a plurality of powder dropping holes are opened on the blanking hole plate in a full-width opening manner, the powder spreading assembly is arranged inside the printing bin, and a horizontally fixed base plate is provided through the middle of the printing bin bottom plate.

[0008] A powder cylinder is fixed vertically through the bottom of the base plate, a powder collecting cavity is provided on the top surface of the printing chamber bottom plate, and the bottom surface of the powder collecting cavity passes through the bottom surface of the printing chamber bottom plate, and a powder collecting hopper is provided on the bottom surface of the printing chamber bottom plate.

[0009] A straight-through connector is fixed on the bottom surface of the powder collecting hopper, the straight-through connector on the powder collecting hopper is connected to a first recovery component, the top end of the powder collecting hopper is opened, and the top end of the powder collecting hopper is assembled on the bottom end surface of the powder collecting chamber in the bottom plate of the printing chamber by bolts.

[0010] The powder spreading assembly includes a screw and a screw hole block. Two screws are horizontally symmetrically arranged, and the two screws are symmetrically rotated and connected to the two sides of the interior of the printing chamber. Two screw hole blocks are symmetrically arranged, and the two screw hole blocks are respectively threaded through and installed on the two screws.

[0011] A horizontal plate is horizontally arranged inside the printing chamber, and both ends of the horizontal plate are respectively fixed on the adjacent vertical end surfaces of the two screw hole blocks, and a powder spreading plate is vertically fixed on the bottom surface of the horizontal plate.

[0012] The first recycling component includes a recycling frame box, the top end of the recycling frame box is open, and the open end of the recycling frame box is fixed to the bottom surface of the straight-through joint at the bottom end of the powder collecting hopper by bolts, the bottom end of the recycling frame box is connected and fixed with a suction cylinder, and the bottom end of the suction cylinder is provided with a first spiral shell, and the first spiral shell is fixed on the bottom surface of the suction cylinder.

[0013] A slide groove is provided on one end surface of the recycling frame box, and a recycling drawer is horizontally slidably inserted in the slide groove of the recycling frame box, the upper and lower end surfaces of the recycling drawer are both through-set, and a support plate is horizontally fixed on the inner top surface of the recycling drawer, and a through groove is vertically provided on the support plate, a first recycling cloth bag is inserted into the interior of the recycling drawer, and the top end of the first recycling cloth bag is open, and the top end of the first recycling cloth bag is fixed in the through groove of the support plate.

[0014] A second recovery component is installed on the first spiral shell, and the second recovery component includes a recovery tube and a second recovery cloth bag. The recovery tube is vertically arranged below the first spiral shell, and threaded tubes are fixed on the upper and lower end surfaces of the recovery tube, and the upper threaded tube of the recovery tube is connected to the first spiral shell thread assembly. The second recovery cloth bag is vertically inserted into the interior of the recovery tube, and the top end of the second recovery cloth bag is opened, and the top end of the second recovery cloth bag is fixed on the inner wall of the recovery tube.

[0015] The lower threaded barrel of the recovery barrel is connected to an air outlet barrel, a second spiral shell is provided at the top of the air outlet barrel, and the second spiral shell on the air outlet barrel is threadedly assembled and connected to the lower threaded barrel of the recovery barrel, an air pump is installed on the air outlet barrel, and a control valve is installed on the air outlet barrel.

[0016] The drop hole plate is provided with powder dropping holes running through the upper and lower end surfaces, and a plurality of the powder dropping holes are evenly arranged on the drop hole plate. An insertion frame is fixed vertically downwardly through the bottom end of the powder collecting chamber in the bottom plate of the printing bin. The top surface of the powder collecting hopper is provided with an opening, and the top opening end of the powder collecting hopper is connected to the insertion frame at the bottom end of the powder collecting chamber by plugging. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is an overall cross-sectional view of a fast and efficient powder cleaning mechanism for additive manufacturing equipment;

[0018] FIG2 is an overall top view of a fast and efficient powder cleaning mechanism of an additive manufacturing device;

[0019] FIG3 is a top view of the printing chamber bottom plate in a disassembled state in an embodiment of a fast and efficient powder cleaning mechanism for additive manufacturing equipment;

[0020] FIG4 is a schematic structural diagram of a printing chamber bottom plate in a disassembled state in an embodiment of a fast and efficient powder cleaning mechanism for additive manufacturing equipment;

[0021] FIG5 is a top view of the first recovery component in a disassembled state in an embodiment of a fast and efficient powder cleaning mechanism for additive manufacturing equipment;

[0022] FIG6 is a top view of the second recovery component in a disassembled state in an embodiment of a fast and efficient powder cleaning mechanism of an additive manufacturing device.

[0023] In the figure: 1. Printing chamber; 2. Blanking hole plate; 21. Powder dropping hole; 3. Powder spreading assembly; 31. Screw; 32. Screw hole block; 33. Horizontal plate; 34. Powder spreading plate; 4. Printing chamber bottom plate; 41. Powder collecting chamber; 411. Insert frame; 5. Powder collecting hopper; 51. Straight-through connector; 6. Base plate; 7. Powder cylinder; 8. First recycling part; 81. Recycling frame box; 811. Slide groove; 82. Recycling drawer; 821. Support plate; 8211. Through groove; 822. First recycling bag; 83. Suction cylinder; 84. First screw shell; 9. Second recycling part; 91. Recycling cylinder; 911. Threaded cylinder; 92. Second recycling bag; 93. Exhaust cylinder; 931. Second screw shell; 94. Air pump; 95. Control valve. DETAILED DESCRIPTION

[0024] The following describes the technical solutions in the embodiments of the present disclosure in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present disclosure. All other embodiments obtained by those skilled in the art based on the embodiments of the present disclosure without creative work are within the scope of protection of the present disclosure.

[0025] The specific embodiments of the present disclosure are described below with reference to the accompanying drawings.

[0026] Please refer to Figures 1, 2, 3, 4, 5 and 6, which show a fast and efficient powder cleaning mechanism for additive manufacturing equipment, including a printing bin 1, a blanking hole plate 2, a powder spreading component 3 and a printing bin bottom plate 4. The printing bin 1 is used to provide a closed environment to ensure that the environmental conditions for printing are stable and appropriate. The printing bin bottom plate 4 is horizontally fixed on the bottom end surface of the printing bin 1. The printing bin bottom plate 4 and the printing bin 1 constitute a closed environment and serve as a base to support components. The interior of the printing bin 1 is horizontally provided with a blanking hole plate 2 located on the top surface of the printing bin bottom plate 4. A plurality of powder dropping holes 21 are opened on the blanking hole plate 2 in a full-width opening manner, and the blanking hole plate 2 is used to allow powder to fall into a recovery pipe through the notch on the plate body. The powder spreading component 3 is arranged inside the printing bin 1, and a horizontally fixed base plate 6 is provided through the middle of the printing bin bottom plate 4. A powder cylinder 7 is fixed vertically through the bottom of the base plate 6, and a powder collecting chamber 41 is provided on the top surface of the printing bin bottom plate 4, and the bottom surface of the powder collecting chamber 41 is set through the bottom surface of the printing bin bottom plate 4. The vertical cross-section of the powder collecting chamber 41 is a trapezoidal structure. The powder collecting chamber 41 serves as a powder storage chamber, and the upper port opening is large, which is convenient for collecting powder. Its own large inclined surface allows the powder to slide down and fall to the bottom. A powder collecting hopper 5 is provided on the bottom surface of the printing bin bottom plate 4. The powder collecting hopper 5 is used to collect powder, and the end is connected to a recovery pipe.

[0027] A straight-through connector 51 is fixed on the bottom surface of the powder collecting hopper 5, and the straight-through connector 51 is connected to a vacuum powder suction device to recover powder. The straight-through connector 51 on the powder collecting hopper 5 is connected to a first recovery component 8. The top of the powder collecting hopper 5 is opened, and the open end of the powder collecting hopper 5 is assembled on the bottom end surface of the powder collecting chamber 41 in the printing bin bottom plate 4 by bolts. The powder falling into the powder collecting chamber 41 of the printing bin bottom plate 4 falls into the powder collecting hopper 5, and then is diverted through the powder collecting hopper 5 and falls into the first recovery component 8 for recovery. When the powder cylinder 7 and the substrate 6 carrying the printing parts are gradually raised after the printing is completed, the powder will diffuse. However, since the blanking plate 2 has a large opening rate on the entire width of the substrate 6, the powder will not accumulate and enter the powder collecting chamber 41. At this time, the vacuum powder suction device connected to the straight-through connector 51 is opened. When the powder collecting chamber 41 is turned on, most of the falling powder will gradually fall to the bottom of the powder collecting chamber 41 along the inclined surface and enter the recovery pipe from the gap. A small amount of powder will also enter the recovery pipe with the suction of the vacuum powder suction device. When the arrangement number and size of the straight-through connector 51 are more matched with the lifting rate of the substrate, automatic powder cleaning can be achieved or the powder cleaning action at the end of printing can be achieved with only minimal manual participation, which can greatly improve the powder cleaning efficiency. The high powder cleaning efficiency does not require much manpower and time, saving costs; minimal powder residue saves powder and reduces the difficulty of cleaning during powder change printing; simple and reliable, since it does not require much human operation, it can avoid unstable factors caused by manual labor; it can improve the reliability of printed parts and greatly reduce quality risks; it will greatly improve the utilization rate of printing equipment.

[0028] Please refer to Figures 1 and 2. The powder spreading assembly 3 includes a screw 31 and a screw hole block 32. Two screws 31 are horizontally symmetrically arranged, and the two screws 31 are symmetrically connected to the two sides of the interior of the printing chamber 1. A driving device is horizontally fixed on the printing chamber 1 to drive the two screws 31 to rotate inside the printing chamber 1. Two screw hole blocks 32 are symmetrically arranged, and the two screw hole blocks 32 are respectively threaded and installed on the screw 31. A horizontal plate 33 is horizontally arranged inside the printing chamber 1, and the two ends of the horizontal plate 33 are respectively fixed on the adjacent vertical end faces of the two screw hole blocks 32. A powder spreading plate 34 is vertically fixed on the bottom surface of the horizontal plate 33. During use, the driving device on the printing bin 1 drives the screw 31 to rotate, and the rotating screw 31 drives the screw hole block 32 to translate, thereby supporting the horizontal plate 33 to move horizontally inside the printing bin 1, and using the powder spreading plate 34 fixed on the bottom surface of the horizontal plate 33 to scrape the powder on the additive material, and at the same time, the powder that falls into the printing bin bottom plate 4 on the bottom surface of the printing bin 1 is spread flat on the powder dropping hole plate 2, so that the powder is spread evenly and falls into the powder collecting cavity 41 of the printing bin bottom plate 4 from the powder dropping hole 21 on the powder dropping hole plate 2, thereby effectively collecting the powder while spreading the powder and accelerating the falling rate of the powder from the powder dropping hole 21 on the powder dropping hole plate 2.

[0029] Please refer to Figures 4 and 5. The first recycling component 8 includes a recycling frame box 81. The top end of the recycling frame box 81 is open, and the open end of the recycling frame box 81 is fixed to the bottom surface of the straight-through joint 51 at the bottom end of the powder collecting hopper 5 by bolts. The bottom end of the recycling frame box 81 is connected and fixed with a suction cylinder 83, and the bottom end of the suction cylinder 83 is provided with a first spiral shell 84, and the first spiral shell 84 is fixed to the bottom surface of the suction cylinder 83. A slide 811 is provided on one end surface of the recycling frame box 81, and a recycling drawer 82 is horizontally slidably inserted in the slide 811 of the recycling frame box 81. The upper and lower end surfaces of the recycling drawer 82 are both through-set, and a support plate 821 is horizontally fixed on the inner top surface of the recycling drawer 82, and a through groove 8211 is vertically provided on the support plate 821. A first recycling cloth bag 822 is inserted into the interior of the recycling drawer 82, and the top end of the first recycling cloth bag 822 is opened, and the top end of the first recycling cloth bag 822 is fixed in the through groove 8211 of the support plate 821. During use, the powder collected by the powder collecting hopper 5 falls downward into the recycling frame box 8 1, the powder follows the air into the first recovery bag 822 in the recovery frame box 81, the large particles of powder are filtered by the first recovery bag 822, and the small particles of powder and air enter the recovery drawer 82 through the first recovery bag 822. When flowing downward through the suction cylinder 83 and the powder recovered in the first recovery bag 822 is recovered, the recovery drawer 82 is pulled out of the chute of the recovery frame box 81, and the powder recovered in the first recovery bag 822 is dumped, thereby filtering and recovering the powder particles according to particle size, avoiding larger powder particles from clogging the first recovery bag 822, causing clogging of the first recovery bag 822 and affecting the recovery efficiency.

[0030] Please refer to Figures 4, 5 and 6. A second recovery component 9 is installed on the first spiral shell 84. The second recovery component 9 includes a recovery cylinder 91 and a second recovery cloth bag 92. The recovery cylinder 91 is vertically arranged below the first spiral shell 84, and threaded cylinders 911 are fixed on the upper and lower end surfaces of the recovery cylinder 91, and the upper threaded cylinder 911 of the recovery cylinder 91 is threadedly assembled and connected to the first spiral shell 84. The second recovery cloth bag 92 is vertically inserted into the interior of the recovery cylinder 91, and the top end of the second recovery cloth bag 92 is opened, and the top end of the second recovery cloth bag 92 is fixed on the inner wall of the recovery cylinder 91. The lower threaded barrel 911 of the recovery barrel 91 is connected to the air outlet barrel 93, and the top of the air outlet barrel 93 is provided with a second spiral shell 931, and the second spiral shell 931 on the air outlet barrel 93 is threadedly assembled and connected with the lower threaded barrel 911 of the recovery barrel 91. An air pump 94 is installed on the air outlet barrel 93, and a control valve 95 is installed on the air outlet barrel 93. When in use, the control valve 95 on the air outlet barrel 93 is opened, and the air pump 94 on the air outlet barrel 93 connected to the bottom of the recovery barrel 91 is started, generating negative pressure to attract small particles of powder and air to fall into the suction barrel 83. In the recovery cylinder 91, small particles of powder and air are filtered through the second recovery bag 92 in the recovery cylinder 91. Small particles of powder are filtered out in the second recovery bag 92, and the air is discharged through the air outlet cylinder 93. At the same time, when recovering the powder, the threaded cylinder 911 at the upper end of the recovery cylinder 91 is threadedly separated from the first spiral shell 84 on the suction cylinder 83, and then the lower threaded cylinder 911 of the recovery cylinder 91 and the second spiral shell 931 at the top of the air outlet cylinder 93 are threadedly separated, and the powder in the second recovery bag 92 is poured out and discharged and collected from the upper threaded cylinder 911.

[0031] Please refer to Figures 1, 2 and 3. Powder dropping holes 21 are opened on the upper and lower end surfaces of the blanking plate 2, and a plurality of powder dropping holes 21 are evenly arranged on the blanking plate 2. The blanking plate 2 is opened on the entire printing surface in this way, and the openings of the blanking plate 2 are not limited to waist holes. They can be round holes, hexagonal holes, square holes, and any other hole plate structure that can meet a larger opening rate. The bottom end of the powder collecting chamber 41 in the printing bin bottom plate 4 is vertically penetrated and downwardly fixed with an insertion frame 411, the top surface of the powder collecting hopper 5 is set to an opening, and the top opening end of the powder collecting hopper 5 is connected to the insertion frame 411 at the bottom end of the powder collecting chamber 41, so as to better guide the powder.

[0032] Working principle: When the powder cylinder 7 and the substrate 6 carrying the printed parts are gradually raised after the printing is completed, the powder will spread. However, since the blanking plate 2 has a large opening rate on the entire surface of the substrate 6, the powder will not accumulate but enter the powder collecting chamber 41. At this time, the control valve 95 on the air outlet cylinder 93 is opened, and the air pump 94 on the second recovery part 9 at the bottom of the first recovery part 8 connected to the straight-through connector 51 is turned on. Most of the falling powder will gradually fall along the inclined surface of the powder collecting chamber 41 to the bottom of the powder collecting chamber 41 and enter the first recovery part 8 from the gap. The powder collected by the powder collecting hopper 5 falls downward into the recovery frame box 81, and the powder The material follows the air into the first recovery bag 822 in the recovery frame box 81, and the large particles of powder are filtered by the first recovery bag 822. The small particles of powder and air pass through the first recovery bag 822 into the recovery drawer 82, and then flow downward through the suction cylinder 83. The air pump 94 on the air outlet cylinder 93 assembled at the bottom of the recovery cylinder 91 is started, and negative pressure is generated to attract small particles of powder and air to fall from the suction cylinder 83 into the recovery cylinder 91. The small particles of powder and air are filtered through the second recovery bag 92 in the recovery cylinder 91. The small particles of powder are filtered and removed in the second recovery bag 92, and the air is discharged through the air outlet cylinder 93.

[0033] In the above description of this specification, unless otherwise expressly specified or limited, terms such as "fixed," "mounted," "connected," or "connected" should be understood broadly. For example, the term "connected" can refer to a fixed connection, a detachable connection, or an integral connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or the internal connection between two elements or the interaction between two elements. Therefore, unless otherwise expressly defined in this specification, those skilled in the art can understand the meaning of the above terms in this application according to the circumstances.

[0034] According to the above description of this specification, those skilled in the art may also understand that the terms used below, such as "up", "down", "front", "back", "left", "right", "length", "width", "thickness", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", "center", "longitudinal", "lateral", "clockwise" or "counterclockwise", etc., which indicate orientation or positional relationships, are based on the orientation or positional relationships shown in the drawings of this specification, and are only for the purpose of facilitating the explanation of the scheme of this application and simplifying the description, rather than explicitly or implicitly indicating that the device or element involved must have the specific orientation, be constructed and operate in a specific orientation. Therefore, the above-mentioned orientation or positional relationship terms cannot be understood or interpreted as limitations on the scheme of this application.

[0035] In addition, the terms "first" or "second" used in this specification to refer to numbers or ordinal numbers are used for descriptive purposes only and should not be understood as explicitly or implicitly indicating relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this specification, "plurality" means at least two, such as two, three or more, etc., unless otherwise expressly specified.

Claims

1. A fast and efficient powder cleaning mechanism for additive manufacturing equipment, comprising a printing bin (1), a material drop hole plate (2), a powder spreading assembly (3) and a printing bin bottom plate (4), wherein the printing bin bottom plate (4) is horizontally fixed on the bottom end surface of the printing bin (1), a material drop hole plate (2) located on the top surface of the printing bin bottom plate (4) is horizontally arranged inside the printing bin (1), and a plurality of powder drop holes (21) are opened on the material drop hole plate (2) in a full-width opening manner, the powder spreading assembly (3) is arranged inside the printing bin (1), and a horizontally fixed base plate (6) is arranged through the middle of the printing bin bottom plate (4).

2. A fast and efficient powder cleaning mechanism for additive manufacturing equipment according to claim 1, wherein: A powder cylinder (7) is vertically fixed through the bottom of the base plate (6), a powder collecting chamber (41) is provided on the top surface of the printing chamber bottom plate (4), and the bottom surface of the powder collecting chamber (41) is arranged through the bottom surface of the printing chamber bottom plate (4), and a powder collecting hopper (5) is arranged on the bottom surface of the printing chamber bottom plate (4).

3. A fast and efficient powder cleaning mechanism for additive manufacturing equipment according to claim 2, wherein: A straight-through joint (51) is fixedly passed through the bottom surface of the powder collecting hopper (5), and the straight-through joint (51) on the powder collecting hopper (5) is connected to a first recovery component (8). The top end of the powder collecting hopper (5) is provided with an opening, and the open end of the powder collecting hopper (5) is assembled on the bottom end surface of the powder collecting chamber (41) in the printing chamber bottom plate (4) by means of bolts.

4. A fast and efficient powder cleaning mechanism for additive manufacturing equipment according to claim 1, wherein: The powder spreading assembly (3) comprises a screw rod (31) and a screw hole block (32), wherein two screw rods (31) are horizontally symmetrically arranged, and the two screw rods (31) are symmetrically rotatably connected to the inner sides of the printing chamber (1), and two screw hole blocks (32) are symmetrically arranged, and the two screw hole blocks (32) are respectively threadedly installed on the two screw rods (31).

5. A fast and efficient powder cleaning mechanism for additive manufacturing equipment according to claim 4, wherein: A transverse plate (33) is horizontally arranged inside the printing chamber (1), and the two ends of the transverse plate (33) are respectively fixed on the adjacent vertical end faces of the two screw hole blocks (32), and a powder spreading plate (34) is vertically fixed on the bottom surface of the transverse plate (33).

6. A fast and efficient powder cleaning mechanism for additive manufacturing equipment according to claim 3, wherein: The first recovery member (8) comprises a recovery frame box (81), the top end of the recovery frame box (81) is open, and the open end of the recovery frame box (81) is fixed to the bottom surface of the straight joint (51) at the bottom end of the powder collecting hopper (5) by bolts, the bottom end of the recovery frame box (81) is connected and fixed with a suction cylinder (83), and the bottom end of the suction cylinder (83) is provided with a first spiral shell (84), and the first spiral shell (84) is fixed to the bottom surface of the suction cylinder (83).

7. A fast and efficient powder cleaning mechanism for additive manufacturing equipment according to claim 6, wherein: A sliding groove (811) is provided on one end surface of the recovery frame box (81), and a recovery drawer (82) is horizontally slidably inserted in the sliding groove (811) of the recovery frame box (81), the upper and lower end surfaces of the recovery drawer (82) are both through-set, and a support plate (821) is horizontally fixed on the inner top surface of the recovery drawer (82), and a through groove (8211) is vertically provided on the support plate (821), a first recovery cloth bag (822) is inserted in the interior of the recovery drawer (82), and the top end of the first recovery cloth bag (822) is open, and the top end of the first recovery cloth bag (822) is fixed in the through groove (8211) of the support plate (821).

8. A fast and efficient powder cleaning mechanism for additive manufacturing equipment according to claim 6, wherein: A second recovery component (9) is installed on the first spiral shell (84), and the second recovery component (9) includes a recovery tube (91) and a second recovery bag (92). The recovery tube (91) is vertically arranged below the first spiral shell (84), and threaded tubes (911) are fixed through the upper and lower end surfaces of the recovery tube (91), and the upper threaded tube (911) of the recovery tube (91) is threadedly assembled and connected with the first spiral shell (84). The second recovery bag (92) is vertically inserted into the interior of the recovery tube (91), and the top end of the second recovery bag (92) is opened, and the top end of the second recovery bag (92) is fixed on the inner wall of the recovery tube (91).

9. A fast and efficient powder cleaning mechanism for additive manufacturing equipment according to claim 8, wherein: The lower threaded tube (911) of the recovery tube (91) is connected to an air outlet tube (93), a second spiral shell (931) is arranged at the top of the air outlet tube (93), and the second spiral shell (931) on the air outlet tube (93) is threadedly assembled and connected to the lower threaded tube (911) of the recovery tube (91), an air pump (94) is installed on the air outlet tube (93), and a control valve (95) is installed on the air outlet tube (93).

10. According to claim 2, a fast and efficient powder cleaning mechanism for additive manufacturing equipment, wherein the drop hole plate (2) is provided with a powder drop hole (21) running through the upper and lower end surfaces, and a plurality of the powder drop holes (21) are evenly arranged on the drop hole plate (2), and an insertion frame (411) is vertically fixed downwardly through the bottom end of the powder collecting chamber (41) in the printing chamber bottom plate (4), and the top surface of the powder collecting hopper (5) is provided with an opening, and the top opening end of the powder collecting hopper (5) is plugged and connected with the insertion frame (411) at the bottom end of the powder collecting chamber (41).

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