CN215998708U

CN215998708U - High-temperature smoke and dust discharge system for 3D printer

Info

Publication number: CN215998708U
Application number: CN202122069419.0U
Authority: CN
Inventors: 张平源; 巫国宝
Original assignee: Westin Xiamen Intelligent Design Co ltd
Current assignee: Westin Xiamen Intelligent Design Co ltd
Priority date: 2021-08-30
Filing date: 2021-08-30
Publication date: 2022-03-11
Anticipated expiration: 2031-08-30

Abstract

The utility model is suitable for a 3D printing apparatus technical field provides a high temperature smoke and dust discharge system for 3D printer, including shaping storehouse, air supply mechanism and vortex elimination mechanism that set up on shaping storehouse first lateral wall, set up the exhaust mechanism on shaping storehouse second lateral wall; the first side wall and the second side wall are oppositely arranged; the air supply mechanism comprises a first air inlet component and a second air inlet component which are arranged at the upper end and the lower end of the first side wall in parallel; the vortex eliminating mechanism is positioned between the first air inlet component and the second air inlet component; the vortex eliminating mechanism comprises a diffusion uniform flow pipe arranged on one side of the forming bin, a connecting pipeline communicated with the diffusion uniform flow pipe and a baffle communicated with the diffusion uniform flow pipe through a guide piece, wherein a control valve is arranged on the connecting pipeline, and a plurality of micropores are formed in the baffle. The utility model discloses a vortex elimination mechanism work is in order to eliminate because of the inside vortex that produces in during operation shaping storehouse, will blow off at the smoke and dust at the middle part because of the vortex gathering, prevents that the smoke and dust from dropping on the work piece, improves the work piece quality.

Description

High-temperature smoke and dust discharge system for 3D printer

Technical Field

The utility model belongs to the technical field of 3D printing apparatus, especially, relate to a high temperature smoke and dust discharge system for 3D printer.

Background

Metal 3D printing is an emerging technology in the manufacturing industry that is rapidly developing, especially there are many types of metal 3D printers in developed countries in europe and america. Metal 3D printing is an additive manufacturing technique that prints three-dimensional objects layer by sintering metal powder with laser based on a digital model file. The 3D printer forming chamber needs absolute sealing, and argon gas which is inert gas is filled in the printing process to ensure the chemical stability of parts printed in the forming chamber. In the printing process, metal printing is performed by sintering metal powder by laser to generate parts, and the laser sintering can cause the generation of smoke and the sputtering of the metal powder.

When the existing large printer is used for printing, because the internal space of the bin body is large, a large-area air inlet and large wind power are needed for dust removal, and the middle part of the bin body is easy to form vortex; when the printer stops working, the smoke dust retained in the bin body due to the vortex can fall into the workpiece, and the quality of the workpiece is affected.

SUMMERY OF THE UTILITY MODEL

The utility model provides a 3D is high temperature smoke and dust discharge system for printer can effectively solve above-mentioned problem.

The utility model discloses a realize like this:

the utility model provides a high temperature smoke and dust discharge system for 3D printer, includes: the device comprises a forming bin, an air supply mechanism and a vortex eliminating mechanism which are arranged on a first side wall of the forming bin, and an air exhaust mechanism which is arranged on a second side wall of the forming bin; the first side wall and the second side wall are oppositely arranged; the air supply mechanism comprises a first air inlet component and a second air inlet component which are arranged at the upper end and the lower end of the first side wall in parallel; the vortex eliminating mechanism is positioned between the first air inlet component and the second air inlet component; the vortex eliminating mechanism comprises a diffusion uniform flow pipe arranged on one side of the forming bin, a connecting pipeline communicated with the diffusion uniform flow pipe and a baffle communicated with the diffusion uniform flow pipe through a guide piece, a control valve is arranged on the connecting pipeline, and a plurality of micropores are formed in the baffle.

As a further improvement, the high-temperature smoke and dust exhaust system for the 3D printer further comprises a vortex detection device and a control unit, wherein the vortex detection device and the control unit are arranged inside the forming bin, and the control unit is used for controlling the vortex elimination mechanism to work to eliminate vortices generated when the first air inlet assembly and the second air inlet assembly work when the vortex detection device detects vortices.

As a further improvement, the opening of the diffusion uniform flow pipe is gradually enlarged along the airflow direction, and the angle of the opening is in the range of 90-150 degrees.

As a further improvement, a flow distribution plate is arranged in the direction of the large opening end of the diffusion uniform flow pipe, and a plurality of layers of flow distribution cavities are arranged on the flow distribution plate.

As a further improvement, the openings of the first air inlet assembly and the second air inlet of the second air inlet assembly are gradually reduced along the air flow direction, and the included angle ranges from 90 degrees to 150 degrees.

As a further improvement, the opening area of the diffusion uniform flow pipe is larger than the sum of the areas of the first air inlet and the second air inlet.

As a further improvement, the high-temperature smoke dust discharging system for the 3D printer further comprises a lifting mechanism arranged at the bottom of the forming bin; the dust collecting mechanism comprises funnel-shaped powder leakage grooves which are arranged at the bottom of the forming bin and are positioned on two sides of the lifting mechanism, and a collecting box connected with the powder leakage grooves.

As a further improvement, a sliding mechanism is arranged inside the forming bin, and a scraper assembly is arranged on the sliding mechanism in a sliding manner; and the upper end of the forming bin is provided with a powder discharging assembly.

As further improvement, the high-temperature smoke and dust exhaust system for the 3D printer further comprises a purifier, and the first air inlet assembly, the second air inlet assembly, the vortex eliminating mechanism and the exhaust mechanism are all connected with the purifier.

As a further improvement, the top of the forming bin is also provided with an air outlet device, and the air outlet direction of the air outlet device is perpendicular to the air inlet direction of the vortex eliminating mechanism.

The utility model has the advantages that: the utility model is provided with a first air inlet component, a vortex eliminating mechanism and a second air inlet component from top to bottom in sequence on the first side wall of the forming bin, and an air exhaust mechanism is arranged on the second side wall opposite to the first side wall; the vortex detection device for detecting the vortex of the forming bin is arranged in the forming bin, when the vortex detection device detects the vortex, the control unit controls the vortex elimination mechanism to work so as to eliminate the vortex generated when the first air inlet assembly and the second air inlet assembly work, therefore, smoke and dust gathered in the middle due to the vortex are blown out, the smoke and dust are prevented from falling on a workpiece, and the quality of the workpiece is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of a high-temperature smoke exhaust system for a 3D printer according to an embodiment of the present invention;

fig. 2 is another schematic view of a high-temperature smoke exhausting system for a 3D printer according to an embodiment of the present invention;

fig. 3 is a schematic partial structural view of a high-temperature smoke exhaust system for a 3D printer according to an embodiment of the present invention;

fig. 4 is another partial structural schematic diagram of the high-temperature smoke exhausting system for the 3D printer according to the embodiment of the present invention;

fig. 5 is a partial cross-sectional view of a high-temperature smoke exhaust system for a 3D printer according to an embodiment of the present invention;

FIG. 6 is a schematic view of an airflow cycle providing only a blower mechanism;

fig. 7 is an air circulation schematic diagram of the operation of the high-temperature smoke and dust exhaust system for the 3D printer according to the embodiment of the present invention.

Reference numerals:

10-forming a bin; 20-laser galvanometer; 30-a dust collection mechanism; 11-a first side wall; 12-a second side wall; 40-an air supply mechanism; 41-a first air intake assembly; 42-a second air intake assembly; 50-an exhaust mechanism; 60-vortex elimination mechanism; 61-a diffusion flow equalizer; 62-connecting a pipeline; 63-a baffle; 64-a control valve; 631-micropores; 70-a lifting mechanism; 31-a powder leakage groove; 80-a scraper assembly; and 90-powder discharging component.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Referring to fig. 1 to 7, a high temperature smoke exhaust system for a 3D printer includes: the device comprises a forming bin 10, an air supply mechanism 40 and a vortex eliminating mechanism 60 which are arranged on a first side wall 11 of the forming bin 10, and an air exhaust mechanism 50 which is arranged on a second side wall 12 of the forming bin 10; the first side wall 11 and the second side wall 12 are oppositely arranged; the air supply mechanism 40 comprises a first air inlet component 41 and a second air inlet component 42 which are arranged at the upper end and the lower end of the first side wall 11 in parallel; the vortex elimination mechanism 60 is positioned between the first air inlet component 41 and the second air inlet component 42; the vortex eliminating mechanism 60 comprises a diffusion uniform flow pipe 61 arranged on one side of the forming bin 10, a connecting pipeline 62 communicated with the diffusion uniform flow pipe 61 and a baffle 63 communicated with the diffusion uniform flow pipe 61 through a guide piece, a control valve 64 is arranged on the connecting pipeline 62, and a plurality of micropores 631 are arranged on the baffle 63.

Further, the high-temperature smoke exhaust system for the 3D printer further comprises a vortex detection device and a control unit, wherein the vortex detection device and the control unit are arranged inside the forming bin 10, and the control unit is used for controlling the vortex elimination mechanism 60 to work to eliminate the vortex generated when the first air inlet assembly 41 and the second air inlet assembly 42 work when the vortex detection device detects the vortex.

In specific implementation, because the high-temperature smoke exhaust system for the 3D printer can generate smoke during operation, in order to ensure the quality of a workpiece, air flow is blown in from the first air intake assembly 41 and the second air intake assembly 42 arranged at the upper end and the lower end of the first side wall 11 through the external purifier, and is blown out from the exhaust mechanism 50 arranged on the second side wall 12 of the forming bin 10, so that the effect of removing smoke is achieved. In this embodiment, a vortex elimination mechanism 60 connected to the purifier is disposed between the first air intake assembly 41 and the second air intake assembly 42, and when the vortex detection device detects that vortex is generated inside the molding bin, the vortex elimination mechanism 60 controls the purifier to discharge air through the control unit, so as to eliminate vortex generated inside the molding bin when the first air intake assembly 41 and the second air intake assembly 42 work. The control unit is used for controlling the vortex eliminating mechanism 60 to work to eliminate the vortex generated when the first air inlet assembly 41 and the second air inlet assembly 42 work when the vortex detecting device detects that the vortex is smaller than a first set value. Further, when the strength of the vortex is greater than or equal to the first set value, on one hand, the vortex removing mechanism 60 works to remove the vortex generated when the first air intake assembly 41 and the second air intake assembly 42 work, and on the other hand, the air intake of the first air intake assembly 41 and the second air intake assembly 42 is controlled to form a turbulent flow, so that the vortex can be removed at the fastest speed. Preferably, the air intake of the first air intake assembly 41 and the second air intake assembly 42 can be switched, or the air intake of the first air intake assembly 41 and the second air intake assembly 42 can be reduced at the same time. For example, the intake air volumes of the first air intake assembly 41 and the second air intake assembly 42 are a and B, respectively, and the intake air volumes of the first air intake assembly 41 and the second air intake assembly 42 are switched to B and a, respectively. In addition, in order not to influence the exhaust, the air intake of the first air intake assembly 41 and the second air intake assembly 42 is reduced by 10% of the initial air intake. For example, the intake air volume of the first air intake assembly 41 and the second air intake assembly 42 is reduced to reach 0.9A and 0.9B.

In this embodiment, during operation, the air flow enters from the purifier through the first air intake assembly 41 and the second air intake assembly 42, and blows the metal powder in the molding bin to the air outlet of the air exhaust mechanism 50 on the molding bin, so as to achieve the dust removal effect. The vortex elimination mechanism 60 is composed of a diffusion homogenizing pipe 61, a connecting pipe 62, a guide, a baffle 63, and a control valve 64. When the vortex detection device detects that a vortex is generated inside the molding bin, an air flow is sent to the vortex elimination mechanism 60 through the purifier, and the air flow quantity sent can be controlled through the control valve 64; after the airflow sequentially passes through the air inlet connector of the connecting pipeline 62, the air outlet connector of the connecting pipeline 62, the guide piece and the baffle 63, the airflow is reduced by the micropores 631 in the baffle 63 to generate breeze, the vortex is eliminated, metal powder retained due to the vortex formed between the first air inlet assembly 41 and the second air inlet assembly 42 is blown out, the dust removal effect is improved, and the product quality is further improved. Preferably, the first air intake assembly 41 and the second air intake assembly 42 are also provided with control valves, so that the size of the air flow can be conveniently controlled, and the operation is convenient.

The utility model is provided with a first air inlet component, a vortex eliminating mechanism and a second air inlet component from top to bottom in sequence on the first side wall of the forming bin, and an air exhaust mechanism is arranged on the second side wall opposite to the first side wall; the vortex detection device for detecting the vortex of the forming bin is arranged in the forming bin, when the vortex detection device detects the vortex, the control unit controls the vortex elimination mechanism to work so as to eliminate the vortex generated when the first air inlet assembly and the second air inlet assembly work, therefore, smoke and dust gathered in the middle due to the vortex are blown out, the smoke and dust are prevented from falling on a workpiece, and the quality of the workpiece is improved.

Further, the opening of the diffusion uniformizing tube 61 becomes gradually larger in the air flow direction, and the angle thereof ranges from 90 ° to 150 °. In the embodiment, the opening of the diffusion uniform flow pipe 61 along the airflow direction is set to be gradually enlarged, and the opening angle ranges from 90 degrees to 150 degrees; when the airflow enters the wider air duct, the air speed is reduced, the wind power is diffused, and the vortex generated by the first air inlet component 41 and the second air inlet component 42 during working can be eliminated in a larger range. Preferably, the angle formed by the upper end, the lower end and/or the left end and the right end of the opening of the diffusion uniform flow pipe 61 is 120 degrees, so that the vortex is eliminated.

Furthermore, a splitter plate is arranged in the direction of the large opening end of the diffusion uniform flow tube 61, and a plurality of layers of splitter cavities are arranged on the splitter plate. In this embodiment, the reposition of redundant personnel cavity comprises the multiunit quad slit, the multiunit the quad slit equidistant setting can effectively with the smooth transition of the gas in the even flow tube 61 of diffusion for gas evenly blows off, further improves dust removal effect.

Further, the openings of the first air inlet assembly 41 and the second air inlet of the second air inlet assembly 42 are gradually reduced along the air flow direction, and the angle range is 90-150 degrees.

Further, the opening area of the diffusion uniform flow pipe 61 is larger than the sum of the areas of the first air inlet and the second air inlet.

In specific implementation, openings of the first air inlet assembly 41 and the second air inlet of the second air inlet assembly 42 along the airflow direction are set to be gradually reduced, and the angle range of the openings is 90-150 degrees; when air flow enters a narrower air channel, the wind power is more concentrated, the pressure is higher, the wind speed is faster, and the dust removal effect is better; the sum of the areas of the first air inlet and the second air inlet is smaller than the opening area of the diffusion uniform flow pipe 61, and the diffusion uniform flow pipe 61 is matched with the diffusion uniform flow pipe to form an air surface beneficial to smoke dust discharge, so that a vortex formed between the first air inlet of the first air inlet assembly 41 and the second air inlet assembly 42 is conveniently removed, a better dust removal effect is ensured, and the workpiece quality is improved. Preferably, an angle formed by the upper end and the lower end and/or the left end and the right end of the opening of the first air intake assembly 41 and the opening of the second air intake assembly 42 is 120 degrees, so that the vortex is eliminated.

Further, the high-temperature smoke exhaust system for the 3D printer further comprises a lifting mechanism 70 arranged at the bottom of the forming bin 10; the dust collecting mechanism 30 includes funnel-shaped powder leaking grooves 31 disposed at the bottom of the molding bin 10 and located at both sides of the lifting mechanism 70, and a collecting box (not shown in the figure) connected to the powder leaking grooves.

Further, a sliding mechanism is arranged inside the forming bin 10, and a scraper assembly 80 is slidably arranged on the sliding mechanism; the upper end of the molding bin 10 is provided with a powder outlet assembly 90. In this embodiment, when the 3D printer works with the high-temperature smoke and dust discharging system, the powder discharging assembly 90 at the upper end of the molding bin 10 discharges powder, and the scraper assembly slides back and forth on the sliding mechanism to complete printing.

Further, the high-temperature smoke exhaust system for the 3D printer further comprises a purifier, and the first air inlet assembly 41, the second air inlet assembly 42, the vortex eliminating mechanism 60 and the exhaust mechanism 50 are connected with the purifier. In this embodiment, the first air intake assembly 41, the second air intake assembly 42, the vortex eliminating mechanism 60, and the exhaust mechanism 50 are all connected to the purifier, so that air intake and air exhaust of the high-temperature smoke exhaust system for the 3D printer are all completed by one purifier.

Further, an air outlet device is further arranged at the top of the molding bin 10, and the air outlet direction of the air outlet device is perpendicular to the air inlet direction of the vortex eliminating mechanism 60. In this embodiment, an air outlet device (not shown in the figure) is further disposed at the top of the molding bin 10, and blows dust close to the laser galvanometer 20 downward, so as to prevent the laser galvanometer 20 from being polluted; further improving the dust removal effect.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a high temperature smoke and dust discharge system for 3D printer which characterized in that includes: the device comprises a forming bin (10), an air supply mechanism (40) and a vortex eliminating mechanism (60) which are arranged on a first side wall (11) of the forming bin (10), and an air exhaust mechanism (50) which is arranged on a second side wall (12) of the forming bin (10); the first side wall (11) and the second side wall (12) are oppositely arranged; the air supply mechanism (40) comprises a first air inlet component (41) and a second air inlet component (42) which are arranged at the upper end and the lower end of the first side wall (11) in parallel; the vortex eliminating mechanism (60) is positioned between the first air inlet component (41) and the second air inlet component (42); vortex canceling mechanism (60) including set up the even flow tube of diffusion (61) of shaping storehouse (10) one side, with connecting tube (62) of even flow tube of diffusion (61) intercommunication and through the guide with baffle (63) of even flow tube of diffusion (61) intercommunication, be equipped with control valve (64) on connecting tube (62), be equipped with a plurality of micropores (631) on baffle (63).

2. The high-temperature smoke exhaust system for the 3D printer according to claim 1, further comprising a vortex detection device and a control unit arranged inside the forming bin (10), wherein the control unit is used for controlling the vortex elimination mechanism (60) to work to eliminate the vortex generated when the first air inlet assembly (41) and the second air inlet assembly (42) work when the vortex detection device detects the vortex.

3. The high-temperature smoke exhaust system for the 3D printer according to claim 1, wherein the opening of the diffusion uniform flow tube (61) is gradually enlarged in the air flow direction, and the angle thereof is in the range of 90-150 °.

4. The high-temperature smoke exhaust system for the 3D printer according to claim 3, wherein a splitter plate is arranged in the direction of the large opening end of the diffusion uniform flow pipe (61), and a plurality of layers of splitter cavities are arranged on the splitter plate.

5. The high-temperature smoke exhaust system for the 3D printer according to claim 3, wherein the openings of the first air inlet assembly (41) and the second air inlet of the second air inlet assembly (42) are gradually reduced along the air flow direction, and the angle formed by the openings is 90-150 degrees.

6. The high-temperature smoke exhaust system for the 3D printer according to claim 5, wherein the opening area of the diffusion uniform flow pipe (61) is larger than the sum of the areas of the first air inlet and the second air inlet.

7. The high-temperature smoke exhaust system for the 3D printer according to claim 6, further comprising a dust collecting mechanism (30) and a lifting mechanism (70) arranged at the bottom of the forming bin (10); the dust collecting mechanism (30) comprises funnel-shaped powder leakage grooves (31) which are arranged at the bottom of the forming bin (10) and located on two sides of the lifting mechanism (70), and a collecting box connected with the powder leakage grooves.

8. The high-temperature smoke exhaust system for the 3D printer according to claim 1, wherein a sliding mechanism is arranged inside the forming bin (10), and a scraper component (80) is arranged on the sliding mechanism in a sliding manner; and a powder outlet assembly (90) is arranged at the upper end of the forming bin (10).

9. The high-temperature smoke exhaust system for the 3D printer according to claim 1, further comprising a purifier, wherein the first air intake assembly (41), the second air intake assembly (42), the vortex elimination mechanism (60) and the exhaust mechanism (50) are connected to the purifier.

10. The high-temperature smoke exhaust system for the 3D printer according to claim 1, wherein an air outlet device is further arranged at the top of the forming bin (10), and the air outlet direction of the air outlet device is perpendicular to the air inlet direction of the vortex eliminating mechanism (60).