阅读说明：本技术 一种具有备用进风口的3d打印机用高温烟尘排出系统 (High-temperature smoke and dust discharge system for 3D printer with spare air inlet ) 是由 张平源 巫国宝 于 2021-08-30 设计创作，主要内容包括：本发明适用于3D打印设备技术领域,提供了一种具有备用进风口的3D打印机用高温烟尘排出系统,包括顶部设有若干组激光振镜且底部设有粉尘收集机构的成型仓；设置在成型仓内部的旋涡检测装置；设置在成型仓的第一侧壁上的送风机构,其包括平行设置在第一侧壁上的第一进风组件、旋涡消除机构、备用进风口和第二进风组件；设置在成型仓的第二侧壁上的排风机构；第一侧壁和第二侧壁相对设置；以及用于当旋涡检测装置检测到旋涡时,控制旋涡消除机构工作以消除工作时产生的旋涡的控制单元。本发明通过控制单元控制旋涡消除机构工作以消除因工作时成型仓内部产生的旋涡,从而将因旋涡而聚集在中部的烟尘吹出,防止烟尘掉落在工件上,提高工件质量。(The invention is suitable for the technical field of 3D printing equipment, and provides a high-temperature smoke dust discharging system with a spare air inlet for a 3D printer, which comprises a forming bin, wherein the top of the forming bin is provided with a plurality of groups of laser galvanometers, and the bottom of the forming bin is provided with a dust collecting mechanism; the vortex detection device is arranged in the forming bin; the air supply mechanism is arranged on the first side wall of the molding bin and comprises a first air inlet assembly, a vortex eliminating mechanism, a standby air inlet and a second air inlet assembly which are arranged on the first side wall in parallel; the air exhaust mechanism is arranged on the second side wall of the forming bin; the first side wall and the second side wall are oppositely arranged; and a control unit for controlling the vortex eliminating mechanism to work to eliminate the vortex generated during work when the vortex detecting device detects the vortex. The vortex eliminating mechanism is controlled by the control unit to work so as to eliminate the vortex generated in the forming bin during working, so that the smoke dust gathered in the middle part due to the vortex is blown out, the smoke dust is prevented from falling on the workpiece, and the quality of the workpiece is improved.)

1. The utility model provides a 3D is high temperature smoke and dust discharge system for printer with reserve air intake which characterized in that includes:

the top of the forming bin (10) is provided with a plurality of groups of laser galvanometers (20), and the bottom of the forming bin is provided with a dust collecting mechanism (30);

the vortex detection device is arranged inside the forming bin (10);

the air supply mechanism (40) is arranged on the first side wall (11) of the forming bin (10) and 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 air exhaust mechanism (50) is arranged on the second side wall (12) of the forming bin (10), and the first side wall (11) and the second side wall (12) are arranged oppositely; and

the vortex elimination mechanism (60) and the spare air inlet (100) are arranged on the first side wall (11), wherein the vortex elimination mechanism (60) and the spare air inlet (100) are positioned between the first air inlet assembly (41) and the second air inlet assembly (42);

and the control unit is used for controlling the vortex eliminating mechanism (60) to work to eliminate the vortex generated when the first air inlet component (41) and the second air inlet component (42) work when the vortex detection device detects the vortex.

2. The high-temperature smoke exhausting system for the 3D printer with the spare air inlet is characterized in that 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 plate (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 formed in the baffle plate (63).

3. The high-temperature smoke exhaust system for the 3D printer with the spare air inlet according to claim 2, wherein the opening of the diffusion uniform flow tube (61) is gradually enlarged in the air flow direction, and the angle range of the opening is 90-150 degrees.

4. The high-temperature smoke exhaust system for the 3D printer with the spare air inlet is characterized in that 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 with the spare air inlet as claimed in 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 range is 90-150 degrees.

6. The high-temperature smoke exhaust system for the 3D printer with the spare air inlet is characterized in that 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 with the spare air inlet is characterized by further comprising 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 with the spare air inlet is characterized in that a sliding mechanism is arranged inside the forming bin (10), and a scraper component (80) is arranged on the sliding mechanism in a sliding mode; 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 with the spare air inlet is characterized by further comprising a purifier, wherein the first air inlet assembly (41), the second air inlet assembly (42), the vortex eliminating mechanism (60) and the air exhaust mechanism (50) are connected with the purifier.

10. The high-temperature smoke exhaust system for the 3D printer with the spare air inlet as claimed in claim 1, wherein 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).

Technical Field

The invention belongs to the technical field of 3D printing equipment, and particularly relates to a high-temperature smoke dust exhaust system with a spare air inlet for a 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.

Disclosure of Invention

The invention provides a high-temperature smoke dust discharging system with a spare air inlet for a 3D printer, which can effectively solve the problems.

The invention is realized by the following steps:

a high temperature smoke and dust discharge system for 3D printer with reserve air intake includes:

the top of the forming bin is provided with a plurality of groups of laser galvanometers, and the bottom of the forming bin is provided with a dust collecting mechanism;

the vortex detection device is arranged in the forming bin;

the air supply mechanism is arranged on the first side wall of the molding bin and 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 air exhaust mechanism is arranged on the second side wall of the forming bin, and the first side wall and the second side wall are arranged oppositely; and

the vortex eliminating mechanism and the standby air inlet are arranged on the first side wall, and the vortex eliminating mechanism and the standby air inlet are positioned between the first air inlet assembly and the second air inlet assembly;

and the control unit is used for controlling the vortex eliminating mechanism to work to eliminate the vortex generated when the first air inlet assembly and the second air inlet assembly work when the vortex detecting device detects the vortex.

As a further improvement, the vortex eliminating mechanism comprises a diffusion uniform flow pipe arranged on one side of the molding bin, a connecting pipeline communicated with the diffusion uniform flow pipe and a baffle communicated with the diffusion uniform flow pipe through a guide part, wherein a control valve is arranged on the connecting pipeline, and a plurality of micropores are arranged on the baffle.

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 exhaust system for the 3D printer with the spare air inlet 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 with the standby air inlet further comprises a purifier, and the first air inlet assembly, the second air inlet assembly, the vortex eliminating mechanism and the air 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 invention has the beneficial effects that: according to the invention, a first air inlet assembly, a vortex eliminating mechanism and a second air inlet assembly are sequentially arranged on a first side wall of a forming bin from top to bottom, and an air exhaust mechanism is arranged on a 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 with a spare air inlet according to an embodiment of the present invention;

FIG. 2 is a schematic partial structural diagram of a high-temperature smoke exhausting system for a 3D printer with a spare air inlet according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of another partial structure of a high-temperature smoke exhausting system for a 3D printer with a spare air inlet according to an embodiment of the present invention;

FIG. 4 is a partial cross-sectional view of a high temperature soot exhaust system for a 3D printer having a spare air intake according to an embodiment of the present invention;

FIG. 5 is a right side view of FIG. 4;

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

fig. 7 is a schematic view of an airflow cycle when the 3D printer with the spare air inlet works with the high-temperature smoke exhaust system 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; 90-a powder discharging assembly; 100-spare air inlet.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the 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 defined otherwise.

Referring to fig. 1 to 7, a high temperature smoke exhaust system for a 3D printer having a spare air inlet includes:

the top of the molding bin 10 is provided with a plurality of groups of laser galvanometers 20, and the bottom of the molding bin is provided with a dust collecting mechanism 30;

a vortex detection device arranged inside the molding bin 10;

the air supply mechanism 40 is arranged on the first side wall 11 of the molding bin 10 and 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 air exhaust mechanism 50 is arranged on the second side wall 12 of the forming bin 10, and the first side wall 11 and the second side wall 12 are arranged oppositely; and

the vortex elimination mechanism 60 and the spare air inlet 100 are arranged on the first side wall 11, wherein the vortex elimination mechanism 60 and the spare air inlet 100 are positioned between the first air inlet assembly 41 and the second air inlet assembly 42; wherein, the vortex eliminating mechanism 60 and the spare air inlet 100 are arranged in sequence from top to bottom.

And a control unit, configured to control the vortex eliminating mechanism 60 to operate to eliminate the vortex generated when the first air intake assembly 41 and the second air intake assembly 42 operate when the vortex detection device detects the vortex.

In specific implementation, because the 3D printer with the spare air inlet can generate smoke dust when the high-temperature smoke dust exhaust system works, in order to ensure the quality of a workpiece, air flow is blown in from the first air inlet assembly 41 and the second air inlet 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 the smoke dust 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 a first set value, on one hand, the vortex eliminating mechanism 60 works to eliminate the vortex generated when the first air inlet assembly 41 and the second air inlet assembly 42 work, and on the other hand, the air inlet amount of the first air inlet assembly 41 and the second air inlet assembly 42 is controlled to form turbulent flow, so that the vortex can be eliminated at the fastest speed, and if the vortex range is large, a spare vortex eliminating mechanism can be additionally arranged at the spare air inlet 100, so that the vortex in a large range is eliminated, the dust removal effect is improved, and the quality of workpieces is further improved; when the spare air inlet 100 is not needed, the spare air inlet 100 is sealed by a sealing cover. 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.

According to the invention, a first air inlet assembly, a vortex eliminating mechanism and a second air inlet assembly are sequentially arranged on a first side wall of a forming bin from top to bottom, and an air exhaust mechanism is arranged on a 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 vortex eliminating mechanism 60 comprises a diffusion uniform flow pipe 61 arranged on one side of the molding 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, wherein a control valve 64 is arranged on the connecting pipeline 62, and a plurality of micropores 631 are arranged on the baffle 63. 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.

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 dust exhaust system for the 3D printer with the spare air inlet 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 with the spare air inlet 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 with the spare air inlet further comprises a purifier, and the first air inlet assembly 41, the second air inlet assembly 42, the vortex eliminating mechanism 60 and the air exhaust mechanism 50 are all 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 air exhausting mechanism 50 are all connected to the purifier, so that the air intake and the air exhaust of the high-temperature smoke exhausting system for the 3D printer with the standby air intake 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.