阅读说明：本技术 一种粉精准输送自筛分3d打印系统及其使用方法 (Automatic screening 3D printing system for accurate powder conveying and using method thereof ) 是由 王林 鲁晟 于 2021-08-04 设计创作，主要内容包括：本发明的一种多粉精准输送自筛分3D打印系统及其使用方法,属于3D打印技术领域,在执行多品类粉末打印时,将粉末精准输送到需熔融位置,通过激光烧熔完成粉末熔融成型,烧熔后通过吸附作用将粉末回收到对应的筛分系统内,规避不同粉末之间的混合,实现粉末自循环供应,一方面解决粉末实时供应,另一方面有效规避粉末发生混粉问题造成大量粉末浪费,可以将各种粉末利用率提升到100％,对科学研究和实业成果转化起到奠基作用。(The invention discloses a multi-powder accurate conveying self-screening 3D printing system and a using method thereof, and belongs to the technical field of 3D printing.)

1. The utility model provides an accurate transport of many powders is from screening 3D printing system which characterized in that: comprises an optical path system (100), a sealed box body (200), a linear motion mechanism (300), a powder laying frame (400), a forming cylinder body (500), a six-axis mechanical arm (600), a conveying and sucking mechanism and a recovery system (800), wherein the optical path system (100) is arranged at the upper end of the sealed box body (200), the forming cylinder body (500) is arranged at the lower end of the sealed box body (200), the linear motion mechanism (300) and the six-axis mechanical arm (600) are both arranged on the inner bottom of the box body, the powder laying frame (400) is fixedly connected with the linear motion mechanism (300), the powder laying frame (400) moves in the sealed box body (200) through the linear motion mechanism (300), a grabbing disc II (610) is arranged on the six-axis mechanical arm (600), a plurality of conveying and sucking mechanisms are arranged in the sealed box body (200), the outer side of the sealed box body (200) is provided with a plurality of recovery systems (800), the plurality of recovery systems (800) are communicated with the plurality of conveying and sucking structures (700) in a one-to-one correspondence mode through conveying hoses (780) and adsorbing hoses (770).

2. The multi-powder accurate conveying self-screening 3D printing system according to claim 1, wherein: carry suction means including switching platform (710), long-pending powder jar (720), valve (730) opens and shuts, send powder mouth (740) and inhale powder hard tube (750), be equipped with the through-hole that runs through from top to bottom on switching platform (710), adsorption hose (770) and delivery hose (780) are connected with the last drill way of two through-holes respectively, inhale powder hard tube (750) and long-pending powder jar (720) and be connected with the lower drill way of two through-holes respectively, adsorption hose (770) with inhale powder hard tube (750) intercommunication, delivery hose (780) and long-pending powder jar (720) intercommunication, the lower extreme of long-pending powder jar (720) is equipped with valve (730) that opens and shuts, send powder mouth (740) to install on valve (730) that opens and shuts, send powder mouth (740) and long-pending powder jar (720) intercommunication, be equipped with on switching platform (710) and snatch a set (760).

3. The multi-powder accurate conveying self-screening 3D printing system according to claim 1, wherein: the recovery system (800) comprises a powder storage settling chamber (810), a first powder feeding pipe (820), a vacuum conveyor (830), a first powder suction pipe (840), a second powder feeding pipe (850), a filtering and screening box (860), a negative pressure adsorption machine (870) and a connecting pipeline (880), wherein the adsorption hose (770) is connected with the first powder suction pipe (840) and communicated with the negative pressure adsorption machine (870), the negative pressure adsorption machine (870) is communicated with the filtering and screening box (860), the filtering and screening box (860) is communicated with the vacuum conveyor (830) through the second powder feeding pipe (850), the vacuum conveyor (830) is communicated with the upper end of the powder storage settling chamber (810) through the first powder feeding pipe (820), and the bottom of the powder storage settling chamber (810) is communicated with the conveying hose (780).

4. The multi-powder accurate conveying self-screening 3D printing system according to claim 1, wherein: be equipped with piston material lifting table (510) in shaping cylinder body (500), the lateral wall of piston material lifting table (510) and the inside wall laminating of shaping cylinder body (500), the bottom of sealed box (200) is equipped with the opening, shaping cylinder body (500) and opening intercommunication.

5. The multi-powder accurate conveying self-screening 3D printing system according to claim 1, wherein: the device is characterized in that a controller (900) is arranged outside the sealed box body (200), and the optical path system (100), the linear motion mechanism (300), the six-axis mechanical arm (600), the conveying and sucking mechanism and the recovery system (800) are electrically connected with the controller (900).

6. The multi-powder accurate conveying self-screening 3D printing system according to claim 3, wherein: store up powder sedimentation chamber (810) overcoat and have been equipped with room frame (890), send powder pipe (820) to go up and be equipped with joint (841) with the one end department that stores up powder sedimentation chamber (810) intercommunication, be equipped with joint seat (811) on storing up powder sedimentation chamber (810), send powder pipe (820) to be connected through joint (841) and joint seat (811) on storing up powder sedimentation chamber (810), the upper end at sealed box (200) is installed in room frame (890).

7. The multi-powder accurate conveying self-screening 3D printing system according to claim 6, wherein: the powder storage settling chamber (810) is embedded into the clamping seat (891), a connecting structure (812) is arranged on the powder storage settling chamber (810), a groove (813) is formed in the connecting structure (812), a raised elastic sheet (892) is arranged in the clamping seat (891), and the powder storage settling chamber (810) is fixed with the clamping seat (891) by clamping the elastic sheet (892) through the groove (813).

8. The multi-powder accurate conveying self-screening 3D printing system according to claim 6, wherein: joint (841) is including fixed ring piece (842), seal gasket (843) and intubate head (844), send powder pipe (820) to be connected with joint (841), be equipped with the breach of symmetry on fixed ring piece (842), seal gasket (843) cover is on intubate head (844), intubate head (844) inserts the inside of storing up powder drip chamber (810), fixed ring piece (842) are connected with joint seat (811), but fixed ring piece (842 free rotation.

9. The multi-powder accurate conveying self-screening 3D printing system according to claim 7, wherein: the upper end of the powder storage settling chamber (810) is provided with a handle (814), the handle (814) is provided with a connecting plate (815), the connecting plate (815) is inserted into the connecting structure (812), the connecting plate (815) is provided with a limiting block (816) and a fixing block (817), and the fixing block (817) is positioned in the groove (813).

10. The utility model provides a many whitewashed accurate transport is from screening 3D printing system's application method which characterized in that: the using method comprises the following steps:

s1, conveying powder;

s2, melting and molding the sintered powder;

s3, sucking redundant powder;

s4, conveying the redundant powder to a powder storage settling chamber (810).

11. The use method of the multi-powder precise conveying self-screening 3D printing system according to claim 1, is characterized in that: the specific content of the step S3 is that the six-axis mechanical arm (600) adsorbs the corresponding first grabbing plate (760) through the second grabbing plate (610), the powder adsorption hard pipe (750) is aligned to the area of the redundant powder, and the negative pressure adsorption machine (870) works to adsorb the redundant powder.

Technical Field

The invention belongs to the field of powder conveying and self-screening 3D printing systems and particularly relates to a powder accurate conveying and self-screening 3D printing system and a using method thereof.

Background

3D prints and is a metal forming mode through laser selection successive layer melting, mainly print to single powder for a long time, because of different kinds of metal material has different kinds of physical properties and chemical properties, so many powder mixes and prints the issue of being mentioned, present research direction includes different directions such as gradient printing and many powder mix printing, however the main difficult problem lies in the continuous supply direction of powder, and the powder mixes the powder when many powder mixes the printing extremely easily, the powder after the mixture can become useless powder, can't be used repeatedly, so the powder utilization ratio is less than 10%, the cost of studying many powder printing is very high, and difficult realization designs the metal rechecking performance at initial stage, difficult realization many powder printing processing's transformation achievement.

Disclosure of Invention

1. Technical problem to be solved by the invention

The object of the present invention is to solve the above drawbacks.

2. Technical scheme

In order to achieve the purpose, the technical scheme provided by the invention is as follows:

the invention discloses a multi-powder accurate conveying self-screening 3D printing system which comprises a light path system, a sealed box body, a linear motion mechanism, a powder spreading frame, a forming cylinder body, six mechanical arms, a conveying suction mechanism and a recovery system.

Preferably, carry suction means including the switching platform, the long-pending powder jar, the valve opens and shuts, send the powder mouth and inhale the powder hard tube, the switching bench is equipped with two through-holes that run through from top to bottom, adsorb hose and delivery hose and be connected with the last drill way of two through-holes respectively, it is connected with the lower drill way of two through-holes respectively to inhale powder hard tube and long-pending powder jar, adsorb hose and inhale the powder hard tube intercommunication, delivery hose and long-pending powder jar intercommunication, the lower extreme of long-pending powder jar is equipped with the valve that opens and shuts, send the powder mouth to install on the valve that opens and shuts, send powder mouth and long-pending powder jar intercommunication, the switching bench is equipped with snatchs a dish one.

Preferably, the recovery system comprises a powder storage settling chamber, a powder feeding pipe I, a vacuum conveyor, a powder suction pipe I, a powder feeding pipe II, a filtering and screening box, a negative pressure adsorption machine and a connecting pipeline, wherein the adsorption hose is connected with the powder suction pipe I and communicated with the negative pressure adsorption machine, the negative pressure adsorption machine is communicated with the filtering and screening box, the filtering and screening box is communicated with the vacuum conveyor through the powder feeding pipe II, the vacuum conveyor is communicated with the upper end of the powder storage settling chamber through the powder feeding pipe I, and the bottom of the powder storage settling chamber is communicated with the conveying hose.

Preferably, be equipped with the piston in the shaping cylinder body and rise the material platform, the lateral wall that the piston rises the material platform is laminated with the inside wall of shaping cylinder body, and the bottom of sealed box is equipped with the opening, shaping cylinder body and opening intercommunication.

Preferably, a controller is arranged outside the sealing box body, and the light path system, the linear motion mechanism, the six-axis mechanical arm, the conveying and sucking mechanism and the recovery system are all electrically connected with the controller.

Preferably, the powder storage settling chamber is sleeved with a chamber frame, the powder feeding pipe I is provided with a clamping joint at one end communicated with the powder storage settling chamber, the powder storage settling chamber is provided with a clamping joint seat, the powder feeding pipe I is connected with the clamping joint seat on the powder storage settling chamber through the clamping joint, and the chamber frame is arranged at the upper end of the sealed box body.

Preferably, the chamber frame comprises a plurality of clamping seats, the powder storage settling chamber is embedded into the clamping seats, the powder storage settling chamber is provided with a connecting structure, the connecting structure is provided with a groove, a raised elastic sheet is arranged in the clamping seats, and the powder storage settling chamber is fixed with the clamping seats by clamping the elastic sheet through the groove.

Preferably, the clamping head comprises a fixed ring piece, a sealing gasket and an inserting pipe head, the powder feeding pipe I is connected with the clamping head, symmetrical notches are formed in the fixed ring piece, the sealing gasket is sleeved on the inserting pipe head, the inserting pipe head is inserted into the powder storage settling chamber, and the fixed ring piece is connected with the clamping seat.

Preferably, the upper end of the powder storage settling chamber is provided with a handle, the handle is provided with a connecting plate, the connecting plate is inserted into the connecting structure, the connecting plate is provided with a limiting block and a fixing block, and the fixing block is positioned in the groove.

A use method of a multi-powder accurate conveying self-screening 3D printing system comprises the following steps:

s1, conveying powder;

s2, melting and molding the sintered powder;

s3, sucking redundant powder;

and S4, conveying the redundant powder to a powder storage settling chamber.

Preferably, the specific content of the step S3 is that the six-axis mechanical arm adsorbs the corresponding first grabbing plate by the second grabbing plate, the powder feeding nozzle is aligned to the area of the excess powder, and the negative pressure adsorption machine works to absorb the excess powder.

3. Advantageous effects

Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects:

(1) according to the multi-powder accurate conveying self-screening 3D printing system, when multi-type powder printing is carried out, powder is accurately conveyed to a position needing to be melted, powder melting forming is completed through laser melting, the powder is recycled into the corresponding screening system through the adsorption effect after the melting, mixing among different powders is avoided, self-circulation supply of the powder is achieved, on one hand, real-time supply of the powder is solved, on the other hand, a large amount of powder waste caused by the powder mixing problem of the powder is effectively avoided, the utilization rate of various powders can be improved to 100%, and a foundation effect is played on scientific research and practical achievement conversion.

(2) The multi-powder accurate conveying self-screening 3D printing system can rapidly disassemble or assemble the powder storage settling chamber.

Drawings

FIG. 1 is a schematic structural diagram of a multi-powder precise conveying self-screening 3D printing system according to the present invention;

fig. 2 is a schematic position diagram of a conveying and sucking mechanism of a multi-powder precise conveying self-screening 3D printing system according to the present invention;

fig. 3 is a schematic structural diagram of a conveying and sucking mechanism of a multi-powder precise conveying self-screening 3D printing system according to the present invention;

FIG. 4 is a schematic structural diagram of a recycling system of the multi-powder precise conveying self-screening 3D printing system according to the present invention;

FIG. 5 is a connection diagram of a recycling system and a conveying and sucking mechanism of the multi-powder precise conveying self-screening 3D printing system according to the present invention;

FIG. 6 is a schematic structural diagram of a card seat of the multi-powder precise conveying self-screening 3D printing system according to the present invention;

fig. 7 is a schematic structural diagram of a connection structure of a multi-powder precise conveying self-screening 3D printing system according to the present invention;

FIG. 8 is a schematic view of a connection structure of a multi-powder precise conveying self-screening 3D printing system according to the present invention and a connection relationship between a handle and the connection structure;

fig. 9 is a schematic structural diagram of a clamping head of the multi-powder precise conveying self-screening 3D printing system according to the present invention.

The reference numerals in the schematic drawings illustrate:

100. an optical path system;

200. sealing the box body;

300. a linear motion mechanism;

400. spreading a powder frame;

500. forming a cylinder body; 510. a piston lifting table;

600. a six-axis mechanical arm; 610. a second grabbing plate;

700. a conveying and sucking mechanism; 710. a transfer station; 720. a powder accumulation tank; 730. opening and closing the valve; 740. a powder feeding nozzle; 750. a powder sucking hard pipe; 760. grabbing a first plate; 770; an adsorption hose; 780. a delivery hose;

800. a recovery system; 810. a powder storage settling chamber; 811. a clamping seat; 812. a connecting structure; 813. a groove; 814. a handle; 815. a connecting plate; 816. limiting; 817. a fixed block; 820. a first powder feeding pipe; 830. a vacuum conveyor; 840. a first powder suction pipe; 841. a clamping head; 842. fixing the circular ring sheet; 843. sealing gaskets; 844. a cannula head; 850. a powder feeding pipe II; 860. a filter screening box; 870. a negative pressure adsorption machine; 880. connecting a pipeline; 890. a chamber frame; 891. a card holder; 892. a spring plate;

900. and a controller.

Detailed Description

In order to facilitate an understanding of the invention, the invention will now be described more fully hereinafter with reference to the accompanying drawings, in which several embodiments of the invention are shown, but which may be embodied in many different forms and are not limited to the embodiments described herein, but rather are provided for the purpose of providing a more thorough disclosure of the invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present; when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present; the terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs; the terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention; as used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Example 1

Referring to fig. 1 to 9, the multi-powder precise conveying self-screening 3D printing system of the embodiment includes an optical path system 100, a sealed box 200, a linear motion mechanism 300, a powder spreading rack 400, a forming cylinder 500, a six-axis robot 600, a conveying suction mechanism and a recovery system 800, the optical path system 100 is installed at the upper end of the sealed box 200, the forming cylinder 500 is installed at the lower end of the sealed box 200, the linear motion mechanism 300 and the six-axis robot 600 are both installed at the inner bottom of the box, the powder spreading rack 400 is fixedly connected with the linear motion mechanism 300, the powder spreading rack 400 moves in the sealed box 200 through the linear motion mechanism 300, a second gripping disk 610 is arranged on the six-axis robot 600, a plurality of conveying suction mechanisms are arranged in the sealed box 200, a plurality of recovery systems 800 are arranged at the outer side of the sealed box 200, the plurality of recovery systems 800 are in one-to-one correspondence with the plurality of conveying suction mechanisms 700 through conveying hoses 780 and suction hoses 770, in the structure of this design, the optical system 100 is used to sinter the powder in the sealed box 200, the recovery system 800 and the conveying and absorbing mechanism are used to absorb and recover the un-sintered powder which is not remained in the sealed box 200, wherein the linear motion mechanism 300 drives the powder spreading frame 400 to uniformly spread the powder in the sealed box 200, and the linear motion mechanism 300 can be a linear guide rail and other structures.

The conveying and sucking mechanism of the embodiment comprises an adapter 710, a powder accumulation tank 720, an opening and closing valve 730, a powder feeding nozzle 740 and a powder sucking hard pipe 750, wherein two through holes penetrating up and down are arranged on the adapter 710, an adsorption hose 770 and a conveying hose 780 are respectively connected with upper orifices of the two through holes, the powder sucking hard pipe 750 and the powder accumulation tank 720 are respectively connected with lower orifices of the two through holes, the adsorption hose 770 is communicated with the powder sucking hard pipe 750, the conveying hose 780 is communicated with the powder accumulation tank 720, the lower end of the powder accumulation tank 720 is provided with the opening and closing valve 730, the powder feeding nozzle 740 is arranged on the opening and closing valve 730, the powder feeding nozzle 740 is communicated with the powder accumulation tank 720, the adapter 710 is provided with a grabbing plate 760, the designed structure is that the recovery system 800 comprises a powder storage settling chamber 810, a powder feeding pipe I820, a vacuum conveyor 830, a powder sucking pipe I840, a powder feeding pipe II 850, a filter sieving box 860, a negative pressure suction machine 870 and a connecting pipeline 880, the adsorption hose 770 and the powder sucking pipe I840 are connected and communicated with a negative pressure suction machine 870, the negative pressure adsorption machine 870 is communicated with the filter screening box 860 through a connecting pipeline 880, the filter screening box 860 is communicated with the vacuum conveyor 830 through a powder feeding pipe II 850, the vacuum conveyor 830 is communicated with the upper end of the powder storage settling chamber 810 through a powder feeding pipe I820, and the bottom of the powder storage settling chamber 810 is communicated with a conveying hose 780.

In the design, the powder suction hard tube 750 sucks unsintered powder in the sealed box body 200 through the negative pressure suction machine 870, the powder is conveyed into the filter screening box 860 through the connecting pipeline 880 for filter screening, then the powder is conveyed into the vacuum conveyor 830 through the first powder conveying tube 820, the powder is further conveyed into the powder storage settling chamber 810 through the first powder conveying tube 820, when the powder is required to be used for replenishing powder regions which are not uniformly distributed in the sealed box body 200, the six-axis mechanical arm 600 controls the transfer table 710 to move, the powder conveying nozzle 740 is moved to the region where the powder is required to be replenished, the opening and closing valve 730 is opened, the powder in the powder storage settling chamber 810 is conveyed into the powder accumulation tank 720 through the conveying hose 780, and finally the powder is conveyed out from the powder conveying nozzle 740.

The forming cylinder 500 of this embodiment is provided with a piston lifting table 510, the outer side wall of the piston lifting table 510 is attached to the inner side wall of the forming cylinder 500, the bottom of the sealed box 200 is provided with an opening, and the forming cylinder 500 is communicated with the opening.

The controller 900 is arranged outside the sealed box 200 of this embodiment, and the optical path system 100, the linear motion mechanism 300, the six-axis mechanical arm 600, the conveying and sucking mechanism and the recovery system 800 are all electrically connected with the controller 900.

The powder storage settling chamber 810 of this embodiment is sheathed with a chamber frame 890, one end of the powder feeding pipe 820 communicated with the powder storage settling chamber 810 is provided with a clamping joint 841, the powder storage settling chamber 810 is provided with a clamping joint 811, the powder feeding pipe 820 is connected with the clamping joint 811 on the powder storage settling chamber 810 through the clamping joint 841, the chamber frame 890 is arranged at the upper end of the sealed box body 200, and the powder feeding pipe and the powder storage settling chamber 810 are convenient to disassemble and connect by adopting the designed structure.

The chamber frame 890 of this embodiment comprises a plurality of clamping seats 891, the powder storage settling chamber 810 is embedded into the clamping seats 891, the powder storage settling chamber 810 is provided with a connecting structure 812, the connecting structure 812 is provided with a groove 813, a raised elastic sheet 892 is arranged in the clamping seat 891, the powder storage settling chamber 810 is fixed with the clamping seat 891 by clamping the elastic sheet 892 through the groove 813, the clamping joint 841 comprises a fixed circular sheet 842, sealing gasket 843 and intubate head 844, powder feeding pipe 820 is connected with joint 841, be equipped with the breach of symmetry on the fixed ring piece 842, sealing gasket 843 overlaps on intubate head 844, intubate head 844 inserts the inside of storing up powder drip chamber 810, fixed ring piece 842 is connected with joint seat 811, fixed ring piece 842 can the free rotation, the upper end of storing up powder drip chamber 810 is equipped with handle 814, be equipped with connecting plate 815 on the handle 814, connecting plate 815 inserts in connection structure 812, be equipped with spacing 816 and fixed block 817 on the connecting plate 815, fixed block 817 is located recess 813.

Foretell structure, cassette 891 bottom is equipped with the opening, store up the dismouting on cassette 891 that powder drip chamber 810 can be quick, be convenient for in time outwards retrieve the powder in the storage powder drip chamber 810, during the use, it can directly to store up the powder drip chamber 810 towards cassette 891 interior pressing, store up powder drip chamber 810 in fixed in shell fragment 892 embedding recess 813 in cassette 891, when needing to extract storage powder drip chamber 810, through pulling handle 814, fixed block 817 on the handle 814 slides in recess 813, it is ejecting with shell fragment 892, can extract storage powder drip chamber 810.

The cannula head 844 of the first powder feeding tube 820 is inserted into the powder storage settling chamber 810, the sealing gasket 843 seals the position, and the fixed circular ring 842 is rotated to enable the clamping seat 811 to press the smooth fixed piece for fixing.

A use method of a multi-powder accurate conveying self-screening 3D printing system comprises the following steps:

s1, conveying powder;

s2, melting and molding the sintered powder;

s3, sucking redundant powder;

and S4, conveying the redundant powder to the powder storage settling chamber 810.

The specific content of step S3 in this embodiment is that the six-axis robot 600 sucks the corresponding first grabbing plate 760 through the second grabbing plate 610, aligns the powder feeding nozzle 740 with the area of the excess powder, and the negative pressure sucking machine 870 operates to suck the excess powder.

The above-mentioned embodiments only express a certain implementation mode of the present invention, and the description thereof is specific and detailed, but not construed as limiting the scope of the present invention; it should be noted that, for those skilled in the art, without departing from the concept of the present invention, several variations and modifications can be made, which are within the protection scope of the present invention; therefore, the protection scope of the present patent shall be subject to the appended claims.