CN216858235U

CN216858235U - 3D prints powder purifier

Info

Publication number: CN216858235U
Application number: CN202123051710.1U
Authority: CN
Inventors: 储瑞鹏; 金玉静; 陈继澎; 张钰莹; 张志鹏
Original assignee: Suzhou Vocational Institute of Industrial Technology
Current assignee: Suzhou Vocational Institute of Industrial Technology
Priority date: 2021-12-07
Filing date: 2021-12-07
Publication date: 2022-07-01
Anticipated expiration: 2031-12-07

Abstract

The utility model provides a 3D printing powder purifier which comprises a shell, wherein a workbench is arranged in the shell, two ends of the workbench are rotatably connected with the shell, a base plate is arranged in the middle of the workbench, a vibration device is arranged above the workbench, two ends of the vibration device are connected with the workbench, and a workpiece to be purified is fixed on the base plate and is positioned on one side opposite to the vibration device; a powder collecting device is arranged below the workbench, and an opening of the powder collecting device faces to a workpiece to be cleaned; the shell is provided with a first cabin door and a second cabin door, and when the first cabin door and the second cabin door are closed, a closed space is formed inside the shell. The utility model realizes automatic powder cleaning, reduces the contact of personnel to the metal powder, reduces the risk of metal powder deflagration and can fully recycle the metal powder.

Description

3D prints powder purifier

Technical Field

The utility model relates to the technical field of 3D printing equipment, in particular to a 3D printing powder purifier.

Background

The Additive Manufacturing technology (AM) is an advanced Manufacturing technology which has digital Manufacturing, high flexibility and adaptability and is directly driven by a CAD model, has the advantages of rapidness and rich material types, and has a very wide application range because the Additive Manufacturing technology is not limited by the complexity of the shape of a part and does not need any tool die. Selective Laser Melting (SLM) is one of the rapidly developed additive manufacturing technologies in recent years, and it uses metal powder material as raw material, and adopts Laser to scan the interface of three-dimensional entity layer by layer to complete prototype manufacturing. The basic process of the selective laser melting process is as follows: the powder feeding device feeds a certain amount of powder to a working table, the powder paving device flatly paves a layer of powder material on the bottom plate of the forming cylinder or the upper surface of the formed part, and the laser galvanometer system controls laser to scan the solid powder layer according to the interface outline of the layer by an approximately unchanged spot size and beam energy, so that the powder is melted and bonded with the formed part below; after the section of one layer is sintered, the working table is lowered by the thickness of one layer, the powder spreading device is used for spreading a layer of uniform and compact powder on the working table, the section of a new layer is scanned and sintered, and the whole prototype is manufactured through scanning and stacking of a plurality of layers.

At present, the main reason that the metal 3D printing cost is high is that the price of metal powder is relatively high, the cost of the metal powder used when parts of the same size are manufactured is higher than that of the traditional processing method, and meanwhile, if the powder cannot be reasonably recycled for reuse, waste and environmental pollution are easily caused. The powder treatment of the existing metal 3D printer generally comprises the steps of taking out a printed piece, collecting redundant powder, screening powder, collecting and the like, and domestic equipment, foreign early-stage machine types and low-and-medium-end equipment are rarely provided with an integrated powder treatment device comprising all the steps. At present, the cleaning of 3D printing metal powder is mainly divided into two types: manual cleaning and manual mechanical treatment.

The manual cleaning is to directly clean the metal workpiece in the powder bin after the metal workpiece is printed, in the process, various intermediate devices or tools such as a brush, a shovel, a dust collector and the like need to be frequently switched, and the whole powder cleaning process is as long as 2 hours. The method can not clean the workpiece and waste is serious. Moreover, during manual cleaning, workers directly contact the powder and must wear a whole set of equipment such as gloves, industrial masks, goggles and the like. The whole cleaning process is long in time consumption, the position of the workpiece cannot be determined due to the fact that a large amount of powder submerges the workpiece, the workpiece can be damaged under the condition that a hard tool is used, the cleaning degree is unstable, and the position of fine powder cannot be found easily by naked eyes. The semi-automatic powder cleaning equipment is a relatively convenient and fast processing mode at present, a substrate is generally fixed through a clamp, and a workpiece is overturned and manually knocked to the back side to discharge powder. The time is saved by the collection mode, but potential safety hazards still exist, for example, dust is inevitably raised when a large amount of powder directly falls in a non-closed environment, once the powder is inhaled into the lung by a human body, the powder cannot be discharged, and great detonation risk also exists for flammable metal alloy powder. For a complex workpiece inner cavity structure, all powder cannot be removed by vibration generated by manual striking.

Therefore, the 3D printing powder purifier provided by the utility model reduces manual operation, realizes recycling of metal powder and reduces pollution to the environment.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model aims to provide a 3D printing powder purifier.

The utility model provides a 3D printing powder purifier which comprises a shell, wherein a workbench is arranged in the shell, two ends of the workbench are rotatably connected with the shell, a base plate is arranged in the middle of the workbench, a vibration device is arranged above the workbench, two ends of the vibration device are connected with the workbench, the vibration device is configured to enable the base plate to vibrate, and a workpiece to be purified is fixed on the base plate and is positioned on one side opposite to the vibration device; a powder collecting device is arranged below the workbench, and an opening of the powder collecting device faces to a workpiece to be cleaned; the shell is provided with a first cabin door and a second cabin door, and when the first cabin door and the second cabin door are closed, a closed space is formed inside the shell.

Furthermore, the worktable is positioned on two sides of the base plate and is sequentially provided with a clamping piece, a connecting piece and a rotating shaft, and the clamping piece is detachably connected with the base plate.

Further, an interlayer is arranged inside the shell, a motor is arranged in the interlayer, the rotating shaft penetrates through the interlayer, and an output shaft of the motor is meshed and connected with the rotating shaft through a gear.

Furthermore, the vibration device comprises a vibration beam and a vibration unit, two ends of the vibration beam are connected with the connecting piece, the vibration unit is connected with the vibration beam, and the vibration unit can enable the substrate to vibrate.

Further, the powder collecting device comprises an upper powder collecting funnel and a lower powder collecting barrel, the powder collecting funnel is connected with the powder collecting barrel through a pipeline, and a sealing valve is arranged on the pipeline.

Further, be provided with transparent window, glove box on the first hatch door, the glove box includes rubber gloves, still be provided with jet-propelled air gun in the casing.

Further, the housing is filled with an inert gas.

Preferably, the bottom of the housing is provided with a lifting wheel.

Further, a lighting device and a sensor are arranged in the shell.

Further, a control device is arranged on the outer side of the shell.

Compared with the prior art, the utility model has the following beneficial effects:

1. according to the 3D printing powder purifier provided by the utility model, powder on a workpiece is removed under the vibration effect generated by the vibration device, so that automatic powder purification is realized, and manual participation is reduced.

2. According to the 3D printing powder purifier provided by the utility model, the powder purifying process is carried out in a closed space, so that the contact of personnel to metal powder is reduced, and the harm to the health of the personnel is reduced.

3. According to the 3D printing powder purifier provided by the utility model, the inert gas is filled in the closed space, so that the risk of deflagration of metal powder is eliminated.

4. The 3D printing powder purifier provided by the utility model can be used for comprehensively collecting the metal powder after powder purification, so that the metal powder can be recycled, and the waste is reduced.

Drawings

Other features, objects and advantages of the utility model will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

fig. 1 is a schematic overall structure diagram of a flour purifier according to an embodiment of the utility model;

FIG. 2 is a schematic structural diagram of a vibration device according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a powder collecting device according to an embodiment of the present invention.

In the figure:

1-a shell;

2-a transparent window;

3-glove box;

4-rubber gloves;

5-a connector;

6-a vibration unit;

7-a second door;

8-sealing the valve;

9-lifting wheels;

10-a first door;

11-a control device;

12-shadowless lamps;

13-a gas-jet air gun;

14-a vibration beam;

15-a clamp;

16-a substrate;

17-powder collecting funnel;

18-powder collecting barrel.

Detailed Description

The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the utility model, but are not intended to limit the utility model in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the utility model. All falling within the scope of the present invention.

As shown in fig. 1, the 3D printing powder purifier provided by the utility model comprises a shell 1, wherein a workbench is arranged inside the shell 1 and used for fixing a part to be purified, two ends of the workbench are connected with the shell 1, and the joint can rotate, so that the part to be purified can be turned over on the workbench. The top of workstation is provided with vibrator, and vibrator's both ends are connected with the workstation, make vibrator rotate along with the workstation, and vibrator can make the workstation produce vibrations, produces vibrations mode including knocking, hammering etc.. A powder collecting device is arranged below the workbench, and an opening of the powder collecting device faces to a part to be cleaned.

Through the vibration effect that vibrating device produced the workstation, can make the powder on the work piece of treating clear powder drop, and then collect by the collection powder device of below, realized the automatic clear powder of work piece to the waste of metal powder has been avoided.

In one embodiment of the present invention, a lifting wheel 9 is provided at the bottom of the housing 1, and the housing 1 can be raised or lowered by the lifting wheel 9, and the housing 1 can be moved to a position. In order to facilitate the carrying and installation of the parts to be cleaned, the height of the workbench is adapted to the horizontal bending height of the arm of the human body.

Specifically, the middle part of the worktable is a base plate 16, a workpiece to be cleaned is fixed on the base plate 16 and is positioned at the side opposite to the vibrating device, and the vibration of the vibrating device acts on the base plate 16. The clamping pieces 15 are arranged on two sides of the base plate 16, and the clamping pieces 15 are detachably connected with the base plate 16, so that the base plate 16 can be replaced conveniently. The both sides of holder 15 are connecting piece 5, and the both sides of connecting piece 5 are the pivot, and the pivot can rotate for casing 1 relatively, realizes the upset of whole workstation.

In this embodiment, the substrate 16 can be replaced by a different material, such as aluminum alloy, 45 steel, etc., through the clamping member 15; the substrate 16 may also be replaced with different sizes, such as 105 x 105mm, 105 x 210mm, to accommodate different sized parts to be cleaned.

In one embodiment, the housing 1 is provided with an interlayer inside, the interlayer is positioned at the outermost side in the vertical direction of the workbench, and the rotating shaft of the workbench vertically penetrates through the interlayer. A motor (not shown in the figure) is arranged in the interlayer, an output shaft of the motor is connected with a rotating shaft of the workbench through a group of bevel gears, and the rotation of the whole workbench is realized by the motor. The bearing is arranged at the position where the rotating shaft penetrates through the interlayer, so that the rotating shaft is connected with the shell 1, and the rotating shaft rotates relative to the shell 1.

Still be provided with the dead jack catch of non-lock on the workstation for clear powder in-process is fixed with the workstation shaking, avoids taking place to rotate and influences vibrator's the effect of beating.

The vibration device comprises a vibration beam 14 and a vibration unit 6, wherein two ends of the vibration beam 14 are respectively connected with the connecting piece 5, so that the vibration device rotates along with the workbench. One end of the vibration unit 6 is connected to the vibration beam 14, and the other end of the vibration unit 6 can vibrate the base plate 16. The beam type vibration powder cleaning mechanism has better stability and can realize better powder cleaning effect.

The connecting piece 5 is internally provided with a spring, and the spring plays a role in buffering the vibration device and the workbench, so that the vibration beam 14 and the connecting piece 5 are protected. The vibration beam 14 and the connecting piece 5 can be connected through a locking bolt.

Specifically, the vibration unit 6 may be a mechanical vibration unit including a driving part, a spring, and a vibration head, wherein the vibration head is driven by the driving part to strike the substrate 16, and then is returned to the original position by the spring.

The powder collecting device comprises an upper powder collecting funnel 17 and a lower powder collecting barrel 18, and the powder collecting funnel 17 and the powder collecting barrel 18 are connected through a pipeline. The powder collecting hopper 17 collects powder falling from a workpiece to be cleaned and collects the powder in the powder collecting barrel 18, so that metal powder is collected.

A sealing valve 8 is arranged on a pipeline between the powder collecting funnel 17 and the powder collecting barrel 18, so that the powder collecting barrel 18 is convenient to detach and replace.

As shown in fig. 2 and 3, a first hatch 10 and a second hatch 7 are provided on the housing 1, the first hatch 10 is located above the second hatch 7, the first hatch 10 can be used to operate the working platform area, and the second hatch 7 can be used to operate the powder collecting device. When the first door 10 and the second door 7 are closed, the inside of the casing 1 forms a closed space.

As shown in fig. 2, a transparent window 2 and a glove box 3 are provided on the first door 10, an air gun 13 is provided inside the casing 1, and the working conditions of the workbench and the vibration device can be observed through the transparent window 2. Glove box 3 includes rubber gloves 4, can go deep into the inside of casing 1 with the hand through rubber gloves 4 to operate the inside jet-propelled air gun 13 of casing 1, utilize jet-propelled air gun 13 to treat the part of clear powder and sweep, make clear powder effect better.

In the working process, a closed space is formed inside the shell 1, and the contact with the outside is reduced. Inert gas is filled in the closed space of the shell 1, so that the risk of metal powder deflagration is avoided. The closed structure ensures the health problem of workers in the long-term working process, and reduces the damage caused by contacting metal powder.

In a preferred embodiment of the present invention, a lighting device is further disposed inside the housing 1, so as to realize lighting inside the housing 1, and facilitate observation of dust in the housing 1; in this embodiment, the lighting device is a shadowless lamp 12 on both sides of the housing 1. The interior of the housing 1 is also provided with sensors for monitoring the content of inert gas and the content of powder.

A control device 11 is further arranged on the outer side of the shell 1, and the control device 11 can control the motor at the end part of the workbench and the vibration unit 6 to realize the rotation of the workbench and the vibration operation of the vibration unit 6. Specifically, the precise control of the rotation angle of the worktable can be realized by design and programming and setting buttons or controllers on the control device 11.

Fig. 1 shows the relative position of the vibration device and the workbench during normal operation of the wheat flour purifier. When the workpiece to be cleaned is mounted before operation, the vibrating device and the worktable are firstly inverted from the position in the figure, and then the workpiece to be cleaned is fixed on the base plate 16. After the fixing is finished, the first cabin door 10 and the second cabin door 7 are closed, the workbench is rotated to enable a workpiece to be cleaned to be located below, the vibration unit 6 is started to strike the upper surface of the base plate 16, and then metal powder can flow into the powder collecting hopper 17 and is further collected into the powder collecting barrel 18.

The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the utility model. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.

Claims

1. The 3D printing powder purifier is characterized by comprising a shell, wherein a workbench is arranged inside the shell, two ends of the workbench are rotatably connected with the shell, a base plate is arranged in the middle of the workbench, a vibration device is arranged above the workbench, two ends of the vibration device are connected with the workbench, the vibration device is configured to enable the base plate to vibrate, and a workpiece to be purified is fixed on the base plate and is positioned on the side opposite to the vibration device; a powder collecting device is arranged below the workbench, and an opening of the powder collecting device faces to a workpiece to be cleaned; the shell is provided with a first cabin door and a second cabin door, and when the first cabin door and the second cabin door are closed, a closed space is formed inside the shell.

2. The 3D printing powder purifier according to claim 1, wherein the working table is sequentially provided with a clamping piece, a connecting piece and a rotating shaft on two sides of the base plate, and the clamping piece is detachably connected with the base plate.

3. The 3D printing powder purifier according to claim 2, wherein an interlayer is arranged inside the shell, a motor is arranged in the interlayer, the rotating shaft penetrates through the interlayer, and an output shaft of the motor is meshed with the rotating shaft through a gear.

4. The 3D printing powder purifier according to claim 2, wherein the vibration device comprises a vibration beam and a vibration unit, two ends of the vibration beam are connected with the connecting piece, the vibration unit is connected with the vibration beam, and the vibration unit can enable the base plate to vibrate.

5. The 3D printing powder purifier according to claim 1, wherein the powder collecting device comprises an upper powder collecting funnel and a lower powder collecting barrel, the powder collecting funnel and the powder collecting barrel are connected through a pipeline, and a sealing valve is arranged on the pipeline.

6. The 3D printing powder purifier according to claim 1, wherein a transparent window and a glove box are arranged on the first cabin door, the glove box comprises rubber gloves, and an air injection gun is further arranged in the shell.

7. The 3D printing powder purifier according to claim 1, wherein the housing is filled with an inert gas.

8. The 3D printing powder purifier according to claim 1, wherein a lifting wheel is arranged at the bottom of the shell.

9. The 3D printing powder purifier according to claim 1, wherein an illumination device and a sensor are further disposed within the housing.

10. The 3D printing powder purifier according to claim 3, wherein a control device is further arranged on the outer side of the casing.