Powder recycling device of metal 3D printer

Abstract

The utility model discloses a powder recycling and circulating device of metal 3D printer, including spraying and sucking subassembly, spraying and sucking subassembly sliding assembly in slide rail, spraying and sucking subassembly are connected with the air inlet pipe and the air exhaust pipe through the pipe cable, the air inlet pipe sets up the gas chamber, and its one end is connected gas generating equipment, and the other end is connected the nozzle of spraying and sucking subassembly, the air exhaust pipe one end is connected the air exhaust equipment, and the other end is connected the air exhaust hole of spraying and sucking subassembly. Thus, when the gas pressure reaches the degree of breaking through the one-way valve in the gas chamber, the one-way valve opens to transport inert gas to the nozzle and accumulates gas again, according to which the nozzle outputs pulse jet airflow, effectively blows the powder material existing in the operation area, and through the negative pressure of the air exhaust hole around the nozzle, it is separated to supply the rear end to carry out filtration collection, this process does not need to destroy the inert gas atmosphere of operation area, does not need manual intervention to stop cleaning, effectively improves work efficiency and material utilization.

Description

Technical Field

[0001] This utility model relates to the field of 3D printing technology, and in particular to a powder recycling device for a metal 3D printer. Background Technology

[0002] When using powder materials for 3D printing, some powder will spill into the work area, which needs to be cleaned up manually as needed to avoid affecting the printing process. However, when 3D printing metal materials, to prevent the powder from oxidizing upon contact with air and affecting the printing results, an inert gas atmosphere needs to be created in the 3D printing work area. This keeps the work area in a normally sealed state, making it difficult to directly clean up the powder. When printing large or complex components, it is necessary to stop the machine midway for cleaning, affecting work efficiency. Utility Model Content

[0003] This embodiment discloses a powder recycling device for a metal 3D printer, specifically including: A jet suction assembly 1 is slidably mounted on a slide rail 2; The spray suction assembly 1 is connected to the air inlet pipe 4 and the air extraction pipe 5 via the cable 3; The air inlet pipe 4 is provided with an air storage chamber 41, one end of which is connected to a gas generating device, and the other end is connected to the nozzle 11 of the spray suction assembly 1. One end of the exhaust pipe 5 is connected to the exhaust device, and the other end is connected to the exhaust port 12 of the spray suction assembly 1.

[0004] As an optional implementation, the nozzle 11 is disposed at the center of the bottom surface of the spray-suction assembly 1, and the air extraction holes 12 are uniformly disposed around the nozzle 11 on the bottom surface of the spray-suction assembly 1.

[0005] As an optional implementation, a one-way valve 42 is provided at the outlet of the gas storage chamber 41 to output inert gas to the nozzle 11 through the pipe 3 when the gas pressure in the gas storage chamber 41 reaches a threshold.

[0006] As an optional implementation, the gas storage chamber 41 intermittently outputs inert gas to the nozzle 11 so that the nozzle 11 can output pulse jet airflow to the working area.

[0007] As an optional implementation, the ventilation device includes a filtration assembly for maintaining the exhaust port 12 under negative pressure and for filtering and collecting the powder material extracted by the negative pressure of the exhaust port 12.

[0008] As an optional implementation, the top of the spray suction assembly 1 is equipped with a slider 21, which is slidably mounted on the bottom of the slide rail 2.

[0009] As an optional implementation, one end of the slide rail 2 is slidably mounted on a lifting device on the side of the working area.

[0010] Compared with the prior art, this embodiment has the following beneficial effects: In this embodiment, when the internal gas pressure of the gas storage chamber reaches the level that exceeds the one-way valve, the one-way valve opens to deliver inert gas to the nozzle and re-store gas. Accordingly, the nozzle outputs a pulse jet airflow, which effectively blows away the powder material present in the working area and extracts it through the negative pressure of the air extraction hole around the nozzle for filtration and collection at the back end. This process does not require disrupting the inert gas atmosphere of the working area and does not require manual intervention to stop the machine for cleaning, which effectively improves work efficiency and material utilization. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in this embodiment, the accompanying drawings used in the embodiment will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a three-dimensional structural diagram of a powder recycling device for a metal 3D printer disclosed in this embodiment; Figure 2 This is another three-dimensional structural schematic diagram of a powder recycling device for a metal 3D printer disclosed in this embodiment; Figure 3 This is a schematic diagram of the planar structure of a powder recycling device for a metal 3D printer disclosed in this embodiment; Figure 4 This is a partial structural schematic diagram of a powder recycling device for a metal 3D printer disclosed in this embodiment.

[0013] The specific structural component comparison table is as follows: Detailed Implementation

[0014] The technical solutions in this embodiment will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0015] Please see Figures 1-4 This embodiment discloses a powder recycling device for a metal 3D printer, comprising: The jet suction assembly 1 is slidably mounted on the slide rail 2; The spray suction assembly 1 is connected to the air inlet pipe 4 and the air extraction pipe 5 via the cable 3; The air inlet pipe 4 is equipped with an air storage chamber 41, one end of which is connected to a gas generating device, and the other end is connected to the nozzle 11 of the spray suction assembly 1. One end of the exhaust pipe 5 is connected to the exhaust device, and the other end is connected to the exhaust port 12 of the spray suction assembly 1.

[0016] In this embodiment, when the spray suction assembly 1 slides above the work area, the nozzle 11 sprays inert gas toward the work area where powder material is scattered. The powder material vibrates and floats accordingly, and is then drawn away from the air extraction hole 12 under negative pressure, thereby achieving the cleaning and recycling of powder material in the work area.

[0017] Here, intermittent air supply is achieved through the air storage chamber 41, thereby outputting pulse jet airflow at the nozzle 11, which can effectively increase the airflow velocity and ensure efficient blowing of the scattered powder material. Its blowing and cleaning effect is significantly better than the method of continuous blowing with airflow at the same velocity.

[0018] As an optional implementation, the nozzle 11 is disposed at the center of the bottom surface of the spray suction assembly 1, and the air extraction holes 12 are uniformly disposed around the nozzle 11 on the bottom surface of the spray suction assembly 1.

[0019] Here, the suction port 12 is arranged around the nozzle 11 to efficiently extract disordered powder material blown away by the nozzle 11.

[0020] As an optional implementation, a one-way valve 42 is provided at the outlet of the gas storage chamber 41 to output inert gas to the nozzle 11 through the pipe 3 when the gas pressure in the gas storage chamber 41 reaches a threshold.

[0021] As an optional implementation, the gas storage chamber 41 intermittently outputs inert gas to the nozzles 11 so that the nozzles 11 can output pulse jet airflow to the working area.

[0022] Specifically, the air storage chamber 41 of the air intake pipe 4 is equipped with a one-way valve 42. The one-way valve 42 will open when the air pressure in the air storage chamber 41 reaches its threshold and will reset after air is delivered to the nozzle 11, so that the air storage chamber 41 can store air again.

[0023] Understandably, the frequency of gas delivery from the one-way valve 42 to the nozzle 11, as well as the flow rate of the inert gas output by the nozzle 11, are influenced by a combination of factors such as the gas flow rate of the gas generating equipment, the capacity of the gas storage chamber 41, and the load-bearing threshold of the one-way valve 42, and will be set according to actual needs.

[0024] As an optional implementation, the ventilation device includes a filtration assembly for maintaining the exhaust port 12 under negative pressure and for filtering and collecting the powder material extracted by the negative pressure of the exhaust port 12.

[0025] Here, the exhaust equipment at the output end filters and collects the powder material. Since the recycling process is carried out in an inert gas atmosphere, the properties of the powder material are not changed, and it can be recycled and reused. Compared with the existing manual cleaning method that requires breaking the inert gas atmosphere, it effectively improves the material utilization rate.

[0026] As an optional implementation, the top of the suction assembly 1 is fitted with a slider 21, which is slidably mounted on the bottom of the slide rail 2.

[0027] As an optional implementation, one end of the slide rail 2 is slidably mounted on the lifting device on the side of the working area.

[0028] Here, the slide rail 2 can also be mounted on a lifting device, so that when there are components in the work area, the height can be adjusted to avoid the components, thus achieving cleaning without stopping the machine.

[0029] Compared with the prior art, this embodiment has the following beneficial effects: In this embodiment, when the internal gas pressure of the gas storage chamber reaches the level that exceeds the one-way valve, the one-way valve opens to deliver inert gas to the nozzle and re-store gas. Accordingly, the nozzle outputs a pulse jet airflow, which effectively blows away the powder material present in the working area and extracts it through the negative pressure of the air extraction hole around the nozzle for filtration and collection at the back end. This process does not require disrupting the inert gas atmosphere of the working area and does not require manual intervention to stop the machine for cleaning, which effectively improves work efficiency and material utilization.

Claims

1. A powder recycling device for a metal 3D printer, characterized in that, include: The spray suction assembly (1) is slidably mounted on the slide rail (2). The spray suction assembly (1) is connected to the air inlet pipe (4) and the air extraction pipe (5) via a cable (3); The air inlet pipe (4) is provided with an air storage chamber (41), one end of which is connected to a gas generating device and the other end is connected to the nozzle (11) of the spray suction assembly (1). One end of the exhaust pipe (5) is connected to the exhaust device, and the other end is connected to the exhaust port (12) of the spray suction assembly (1).

2. The powder recycling device for a metal 3D printer according to claim 1, characterized in that, include: The nozzle (11) is located at the center of the bottom surface of the spray-suction assembly (1), and the air extraction hole (12) is uniformly arranged around the nozzle (11) on the bottom surface of the spray-suction assembly (1).

3. The powder recycling device for a metal 3D printer according to claim 2, characterized in that, include: The outlet of the gas storage chamber (41) is provided with a one-way valve (42) to output inert gas to the nozzle (11) through the pipe (3) when the gas pressure in the gas storage chamber (41) reaches a threshold.

4. The powder recycling device for a metal 3D printer according to claim 3, characterized in that, include: The gas storage chamber (41) intermittently outputs inert gas to the nozzle (11) so that the nozzle (11) can output pulse jet airflow to the working area.

5. The powder recycling device for a metal 3D printer according to claim 1, characterized in that, include: The exhaust device includes a filtration assembly for maintaining the exhaust port (12) under negative pressure and for filtering and collecting the powder material extracted by the exhaust port (12) under negative pressure.

6. The powder recycling device for a metal 3D printer according to claim 1, characterized in that, include: The top of the spray suction assembly (1) is equipped with a slider (21), which is slidably mounted on the bottom of the slide rail (2).

7. The powder recycling device for a metal 3D printer according to claim 1, characterized in that, include: One end of the slide rail (2) is slidably mounted on the lifting device on the side of the working area.

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