CN112676574B

CN112676574B - Base shaft type SLM metal powder circulating device for metal printer

Info

Publication number: CN112676574B
Application number: CN202011457108.5A
Authority: CN
Inventors: 韩品连
Original assignee: Zhejiang Yidong Technology Co Ltd
Current assignee: Kangshuo Electric Group Co ltd; Kangshuo Shanxi Low Stress Manufacturing System Technology Research Institute Co ltd
Priority date: 2020-12-10
Filing date: 2020-12-10
Publication date: 2022-09-23
Anticipated expiration: 2040-12-10
Also published as: CN112676574A

Abstract

The invention discloses a metal powder circulating device for a base shaft type SLM metal printer, which comprises a powder suction device, a powder screening machine and a metering powder feeding device, wherein the powder suction device is arranged on the base shaft type SLM metal printer; the powder storage cylinder of the powder suction device is communicated with the sleeve of the powder sieving machine through a powder feeding pipe; the containing box comprising the powder screening machine is communicated with the powder storage cylinder of the metering powder feeding device through a powder feeding pipe; the receiving hopper of the metering powder feeding device is communicated with the powder supply port through a powder feeding pipe. The metal powder circulating device for the base shaft type SLM metal printer is simple in structure and convenient to use, the suction head of the powder suction device is adopted to extend into the printing cavity to recover metal powder, the effect of recovery processing can be effectively guaranteed to guarantee that redundant metal powder can meet the requirement of next printing, and the metal powder circulating device is matched with the metering powder feeding device to be used to provide qualified screened metal powder into the powder spreading device (in the printing cavity) of the SLM metal printer or the powder cylinder of the printing cavity.

Description

Base shaft type SLM metal powder circulating device for metal printer

Technical Field

The invention relates to the technical field of laser additive manufacturing, in particular to a metal powder circulating device for a base shaft type SLM metal printer.

Background

SLM, Selective Laser Melting, is a more industrial method of 3D printing, moving a roller to push metal particles through a printing area, then a powerful Laser will track the current layer of the printed object, selectively fuse parts of the particles together according to a designed model, once the current layer is completed, the roller moves back and forth again, bringing a new layer of metal particles, when the SLM is used, the metal particles are actually completely fused and they are fused together more firmly, forming an extremely strong object, which can also be printed as a whole without assembling different parts, which further reduces the possibility of faults or errors during assembly, based on the benefits of this design method they are used in industries with very low fault tolerance, such as aerospace, mainly for 3D printing parts of small aero engines, mostly be rotary part, can shorten the research and development cycle that novel aerospace was equipped, optimize the part structure, weight reduction reduces stress concentration, increases life, also can be used for the restoration of part to take shape to and cooperate with traditional manufacturing technology, the intercommunication is complementary.

After the SLM metal printer finishes printing, the redundant metal powder needs to be recovered so as to be used for next printing, and the effect of recovery treatment needs to be ensured so as to enable the redundant metal powder to meet the requirement of next printing; before the SLM metal printer finishes printing, metal powder needs to be sieved, metered, conveyed and the like before the SLM metal printer prints, and the metal powder is supplied into a powder cylinder of a powder spreading device/printing chamber of the SLM metal printer.

According to the patent number CN210305756U, the name is a metal powder collecting device of a metal 3D printer, which comprises a horn-shaped powder inlet cover, wherein the lower end of the powder inlet cover is provided with a C-shaped fastener, the powder inlet cover is connected with a powder suction cavity through a pipeline, and a fan blade is arranged in the powder suction cavity; the automatic feeding device has the advantages of reducing labor intensity of workers, improving working efficiency and the like.

But the device's fixed structure, the unable position of adjusting the suction head leads to retrieving to inhale the powder effect relatively poor, and holistic installation fastness remains to improve simultaneously, has certain use limitation.

According to patent number CN210207599U, the name is a metal 3d printer powder sieving and filtering device, which comprises a filtering shell, a door plate slideway, an outer door plate, a return spring, a hopper, a powder sieving mechanism, an inner base, a powder collecting bottle connecting seat, a powder collecting bottle and a powder collecting bottle connecting port; has the advantages of high powder screening efficiency, high powder purity and the like.

But the device is after long-time the use many big particulate matters of build up on the screening net, and then has caused very big influence to subsequent screening work, and the experience of product is felt relatively poorly, and the practicality remains to improve.

According to the patent number CN210615116U, the name is a powder conveying device for a metal 3D printer, which comprises a storage box, wherein a conveying cylinder is connected in the storage box in a clamping manner, and the upper surface of the conveying cylinder is fixedly connected with a driving device; has the advantages of reducing labor intensity, improving production efficiency and the like.

But the device's structure is complicated, can't guarantee the effective transport of metal powder, also can not carry out real-time measurement to the powder of carrying simultaneously, can't satisfy more demands in the in-service use, has certain use limitation.

Based on the situation, the invention provides a metal powder circulating device for a base shaft type SLM metal printer, which can effectively solve the problems.

Disclosure of Invention

The invention aims to provide a metal powder circulating device for a base shaft type SLM metal printer. The metal powder circulating device for the base shaft type SLM metal printer has a simple structure and is convenient to use, the suction head of the powder suction device extends into the printing cavity, the suction head moves to the position where the metal powder needs to be recovered to recover the metal powder, and the metal powder can be temporarily stored, conveyed, screened and stored, after the SLM metal printer finishes printing, the redundant metal powder can be recovered so as to be used for next printing, the recovery treatment effect can be effectively ensured, the redundant metal powder can meet the requirement of next printing, the metal powder can be efficiently screened, metered, conveyed and the like by matching with the metering and powder conveying device, the qualified screened metal powder can be provided into the powder cylinder of the powder spreading device (in the printing cavity) of the SLM metal printer or the powder spreading device (the printing cavity can also be used as the place for temporarily storing the metal powder in the powder cylinder/powder spreading device), a series of operations such as automatic screening, metering, conveying and the like are realized.

The invention is realized by the following technical scheme:

a metal powder circulating device for a base shaft type SLM metal printer comprises a powder suction device, a powder screening machine and a metering powder feeding device;

the powder storage cylinder of the powder suction device is communicated with the sleeve of the powder sieving machine through a powder feeding pipe; a vacuum conveyor is arranged on the powder feeding pipe;

the containing box comprising the powder screening machine is communicated with the powder storage cylinder of the metering powder feeding device through a powder feeding pipe; a vacuum conveyor is arranged on a powder feeding pipe between the powder screening machine and the metering powder feeding device;

the receiving hopper of the metering powder feeding device is communicated with the powder supply port through a powder feeding pipe; a vacuum conveyor is arranged on the powder feeding pipe between the metering powder feeding device and the powder feeding port;

further: the powder suction device comprises a second box body, a support is fixedly mounted on the side wall of the second box body, a second shell is fixedly mounted inside the second box body, a second motor is fixedly mounted inside the second shell, a rotating assembly is fixedly connected to an output shaft of the second motor, a powder suction assembly and a second transmission assembly are arranged inside the second box body, the second transmission assembly is in transmission connection with the rotating assembly, the powder suction assembly is communicated with the top of the second shell, a first sleeve block and a second sleeve block are fixedly mounted on the outer surface of the powder suction assembly, the second sleeve block is in sliding connection with the upper surface of the support, a second connecting rod is rotatably connected to the bottom of the first sleeve block through a rotating shaft, the bottom of the second connecting rod is rotatably connected with the second transmission assembly through a rotating shaft, and a powder storage assembly is fixedly connected to the inside of the second box body through a bolt, the powder storage assembly is communicated with the bottom of the second shell through a pipeline.

Further: the powder screening machine comprises a first box body, the inside fixed mounting of first box has first motor and first casing, the inside of first casing is provided with the stirring subassembly, the output shaft fixed connection of stirring subassembly and first motor, the inside of first box is provided with first drive assembly, first drive assembly is connected with the stirring subassembly transmission, the inside wall of first box rotates through the pivot and is connected with the screening subassembly, the screening subassembly rotates through the pivot and is connected with the head rod, the top of head rod rotates through pivot and first drive assembly and is connected, the inside of first box and the below that is located the screening subassembly are provided with two receivers, the upper surface of first box runs through and is provided with the unloading subassembly, the top switch-on of unloading subassembly through first hose and first casing.

Further: the powder device is sent in measurement includes the mounting panel, the surface of mounting panel runs through and fixed mounting connects the hopper, the top fixed mounting of mounting panel has center pin, box and slip subassembly, the top of center pin is rotated through the pivot and is connected with the electron weighing machine, be provided with supporting component between the bottom of electron weighing machine and the upper surface of mounting panel, one side fixed mounting that supporting component was kept away from to the electron weighing machine has the sloping block, the inside fixed mounting of box has powder storage cylinder and electric putter, electric putter's expansion end fixed mounting has the removal subassembly, one side and the removal subassembly of slip subassembly offset, the opposite side of slip subassembly offsets with the bottom of electron weighing machine.

The metal powder circulating device for the base shaft type SLM metal printer has a simple structure and is convenient to use, the suction head of the powder suction device extends into the printing cavity, the suction head moves to a position where metal powder needs to be recovered to recover the metal powder, the metal powder can be temporarily stored, conveyed, screened and stored, after the SLM metal printer finishes printing, redundant metal powder can be recovered so as to be used for next printing, the recovery treatment effect can be effectively ensured to ensure that the redundant metal powder can meet the requirement of next printing, the metal powder circulating device is matched with the metering powder conveying device to be used, the metal powder can be efficiently screened, metered, conveyed and the like, the qualified screened metal powder is provided into a powder cylinder in a powder spreading device (in the printing cavity) of the SLM metal printer/a powder cylinder of the printing cavity (the printing cavity can also be used as a place for temporarily storing the metal powder in the powder cylinder/powder spreading device), a series of operations such as automatic screening, metering, conveying and the like are realized.

And further: the lateral wall of second box has the side door through hinge swivelling joint, the lateral wall fixed mounting of side door has the second handle, the surface of support runs through and threaded connection has the gag lever post, the top fixed mounting of gag lever post has the clamp plate, the bottom fixed mounting of second nest of blocks has the dovetail block, the dovetail has been seted up to the upper surface of support.

And further: the rotating assembly comprises a central shaft, and a first bevel gear and a plurality of fan blades are fixedly mounted on the outer surface of the central shaft.

And further: the powder sucking assembly comprises a connecting pipe, one end of the connecting pipe is communicated with a sucking head, and the other end of the connecting pipe is communicated with a second hose.

And further: the second transmission assembly comprises a round rod, the round rod is rotatably connected with the side wall of the second shell, a second bevel gear is fixedly mounted at one end of the round rod, and a turntable is fixedly mounted at the other end of the round rod.

And further: store up the powder subassembly including storing up the powder jar, store up the lateral wall hinge of powder jar and be connected with the baffle in a rotating manner, the surperficial gomphosis of baffle has ventilative net.

And further: the front surface of the first box body is rotatably connected with a door panel through a hinge, and a first handle is fixedly installed on the front surface of the door panel.

Further: the stirring assembly comprises a supporting rod, and a first belt pulley and a plurality of stirring rods are fixedly mounted on the outer surface of the supporting rod.

Further: the unloading subassembly includes the sleeve, the equal fixed mounting in telescopic surface both sides has the separation blade, telescopic top is connected with the apron through the pivot rotation.

Further: the first transmission assembly comprises a long rod, the top of the long rod is rotatably connected with the inner wall of the first box body through a bearing, a second belt pulley is fixedly arranged on the outer surface of the long rod, and a rectangular block is connected to the outer surface of the long rod in a threaded mode.

Further: the screening subassembly includes the fixed plate, the upper surface of fixed plate has run through and has seted up and place the hole, the pore wall fixed mounting who places the hole has the screening net.

Further: the upper surface fixed mounting of electron weighing machine has two guide plates, two the guide plate is the symmetry setting, the surface of mounting panel is run through and is seted up spacing hole.

Further: the upper surface of box is connected with the third apron through the hinge rotation, the top fixed mounting of third apron has the third handle.

Further: the supporting component comprises a telescopic rod, the two ends of the telescopic rod are respectively connected with the bottom of the electronic weighing device and the upper surface of the mounting plate in a rotating mode through rotating shafts, and a spring is sleeved on the outer surface of the telescopic rod.

Further: the movable assembly comprises a partition plate, a baffle plate, a first trapezoid block and a second trapezoid block are fixedly mounted on the side wall of the partition plate, and a supporting plate is fixedly mounted on the side wall, far away from the partition plate, of the second trapezoid block.

And further: the sliding assembly comprises a supporting column, a third sleeve is fixedly mounted at the top of the supporting column, and a push rod is sleeved inside the third sleeve.

Compared with the prior art, the invention has the following advantages and beneficial effects:

The powder suction device can drive the suction head to reciprocate back and forth through the matching of the rotating assembly, the second transmission assembly, the second connecting rod, the first sleeve block and the like, so that the powder suction effect can be greatly improved, the effective recovery of metal powder is ensured, and more requirements in actual use are met.

1. Compared with the prior art, the powder suction device can drive the suction head (the connecting pipe of the suction head can be made into a telescopic pipe, such as a corrugated pipe and the like, and can also realize the purpose of receiving the movable suction head) to do reciprocating motion back and forth through the matching of the rotating assembly, the second transmission assembly, the second connecting rod, the first sleeve block and the like, so that the powder suction effect can be greatly improved, the effective recovery of metal powder is ensured, more requirements in practical use are met, and the practicability is higher.

2. Compared with the prior art, the powder suction device realizes effective fixation of the bracket and the external substrate through the matching of the limiting rod, the pressing plate and the like, thereby ensuring the stability of the whole equipment; simultaneously through the cooperation of side door and second handle, be convenient for follow-up store up the recovery powder in the powder jar and carry out rapid processing to (sealed), the experience of product feels better, and the suitability is stronger.

According to the powder screening machine, through the cooperation of the first motor, the first transmission assembly, the first connecting rod, the screening assembly and the like, not only can the metal powder be stirred and scattered, but also the intermittent swing of the screening net is realized, so that large particles on the screening net can be rolled into the containing box, the later-stage centralized treatment is facilitated, and the experience of products is better.

3. Compared with the prior art, the powder screening machine disclosed by the invention has the advantages that through the matching among the first motor, the first transmission assembly, the first connecting rod, the screening assembly and the like, the metal powder is stirred and scattered, the intermittent swing of the screening net is realized, and then large particles on the screening net can roll down into the containing box, so that the later-stage centralized processing is facilitated, the experience of a product is better, and the practicability is higher.

4. Compared with the prior art, the powder sieving machine has the advantages that metal powder can be introduced into the first shell to start stirring work through the matching among the blanking assembly, the first hose, the first shell and the like, the sleeve can be lifted to carry out blanking more conveniently, more requirements in actual use are met, and the applicability is stronger.

The metering powder feeding device disclosed by the invention realizes the tilting and resetting motions of the electronic weighing device through the matching among the electric push rod, the moving component, the sliding component, the supporting component and the like, can play a role in knocking the electronic weighing device, ensures the effective conveying of metal powder, has a real-time metering function, and has better experience sense of products.

1. Compared with the prior art, through the cooperation between electric putter, removal subassembly, slip subassembly and the supporting component etc. both realized the slope and the motion that resets of electron weighing machine, also can play the effect of beating to electron weighing machine, guarantee metal powder's effective transport, but also possess the function of real-time measurement, the experience of product is felt better, and the practicality is higher.

2. Compared with the prior art, through the cooperation between third apron and third handle etc, not only can play the effective sealing effect to storing up the inside metal powder of powder jar, and then can reduce the adnexed of debris such as dust, still be convenient for overhaul the maintenance to storing up the inside condition of powder jar, go back to carry out the manual work through opening the third apron and add metal powder to storing up the inside of powder jar, mounting panel and spacing hole are mutually supported simultaneously, be convenient for fix suitable position with this device, more demands in the in-service use have been satisfied, the suitability is stronger.

Drawings

FIG. 1 is a schematic view of the structure of the present invention;

FIG. 2 is a schematic view of the overall structure of the powder sucking device according to the present invention;

FIG. 3 is a schematic structural view of a powder storage assembly of the powder suction device according to the present invention;

FIG. 4 is a schematic view of the dovetail block and dovetail groove structure of the powder suction device of the present invention.

FIG. 5 is a schematic view of the overall structure of the powder screening machine according to the present invention;

FIG. 6 is a schematic diagram of the screen assembly of the powder shifter of the present invention;

fig. 7 is an enlarged view of the structure at the position of fig. 5-S.

FIG. 8 is a schematic view of the overall structure of the powder metering and feeding device according to the present invention;

FIG. 9 is a schematic structural view of a supporting assembly of the metering powder feeding device of the present invention;

fig. 10 is a top view of a deflector of the metering powder feeding device of the present invention.

In the figure: 1. screening machine; 2. a powder suction device; 3. a powder feeding pipe; 4. a vacuum conveyor; 03. a metering powder feeding device; 301. a powder supply port; 05 a printing chamber;

21. a second case; 22. a support; 23. a second housing; 24. a second motor; 25. a rotating assembly; 26. a powder suction assembly; 27. a second transmission assembly; 28. a second connecting rod; 29. a first nest block; 210. a second nest block; 211. a pipeline; 212. a powder storage assembly; 213. a side door; 214. a second handle; 215. a limiting rod; 216. pressing a plate; 217. a dovetail block; 218. a dovetail groove; 2501. a central shaft; 2502. a first helical gear; 2503. a fan blade; 2601. a connecting pipe; 2602. a suction head; 2603. a second hose; 2701. a round bar; 2702. a second helical gear; 2703. a turntable; 21201. a powder storage cylinder; 21202. a partition plate; 21203. a breathable net;

11. a first case; 12. a first motor; 13. a first housing; 14. a stirring assembly; 15. a blanking assembly; 16. a first hose; 17. a first transmission assembly; 18. a screen assembly; 19. a first connecting rod; 110. a storage box; 111. a door panel; 112. a first handle; 1401. a strut; 1402. a first pulley; 1403. a stirring rod; 1501. a sleeve; 1502. a baffle plate; 1503. a cover plate; 1701. a long rod; 1702. a second pulley; 1703. a rectangular block; 1801. a fixing plate; 1802. placing holes; 1803. screening the net;

31. mounting a plate; 32. a receiving hopper; 33. a central shaft; 34. an electronic weighing machine; 35. a support assembly; 36. a box body; 37. a powder storage cylinder; 38. an electric push rod; 39. a moving assembly; 310. a sloping block; 311. a sliding assembly; 312. a baffle; 313. a third cover plate; 314. a third handle; 315. a limiting hole; 3501. a telescopic rod; 3502. a spring; 3901. a partition plate; 3902. a baffle plate; 3903. a first trapezoidal block; 3904. a second trapezoidal block; 3905. a support plate; 31101. a support post; 31102. a third sleeve; 31103. and a push rod.

Detailed Description

In order that those skilled in the art will better understand the technical solutions of the present invention, the following description of the preferred embodiments of the present invention is provided in conjunction with specific examples, but it should be understood that the drawings are for illustrative purposes only and should not be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent.

Example 1:

as shown in fig. 1 to 10, a metal powder circulating device for a base shaft type SLM metal printer comprises a powder suction device, a powder screening machine and a metering powder feeding device;

the receiving box comprising the powder screening machine is communicated with the powder storage cylinder of the metering powder feeding device through a powder feeding pipe; a vacuum conveyor is arranged on a powder feeding pipe between the powder screening machine and the metering powder feeding device;

the powder suction device comprises a second box body, a support is fixedly mounted on the side wall of the second box body, a second shell is fixedly mounted inside the second box body, a second motor is fixedly mounted inside the second shell, a rotating assembly is fixedly connected to an output shaft of the second motor, a powder suction assembly and a second transmission assembly are arranged inside the second box body, the second transmission assembly is in transmission connection with the rotating assembly, the powder suction assembly is communicated with the top of the second shell, a first sleeve block and a second sleeve block are fixedly mounted on the outer surface of the powder suction assembly, the second sleeve block is in sliding connection with the upper surface of the support, a second connecting rod is rotatably connected to the bottom of the first sleeve block through a rotating shaft, the bottom of the second connecting rod is rotatably connected with the second transmission assembly through a rotating shaft, and a powder storage assembly is fixedly connected to the inside of the second box body through a bolt, the powder storage assembly is communicated with the bottom of the second shell through a pipeline.

The powder screening machine comprises a first box body, the inside fixed mounting of first box has first motor and first casing, the inside of first casing is provided with the stirring subassembly, the output shaft fixed connection of stirring subassembly and first motor, the inside of first box is provided with first drive assembly, first drive assembly is connected with the stirring subassembly transmission, the inside wall of first box rotates through the pivot and is connected with the screening subassembly, the screening subassembly rotates through the pivot and is connected with the head rod, the top of head rod rotates through pivot and first drive assembly and is connected, the inside of first box and the below that is located the screening subassembly are provided with two receivers, the upper surface of first box runs through and is provided with the unloading subassembly, the top switch-on of unloading subassembly through first hose and first casing.

The powder device is sent in measurement includes the mounting panel, the surface of mounting panel runs through and fixed mounting connects the hopper, the top fixed mounting of mounting panel has center pin, box and slip subassembly, the top of center pin is rotated through the pivot and is connected with the electron weighing machine, be provided with supporting component between the bottom of electron weighing machine and the upper surface of mounting panel, one side fixed mounting that supporting component was kept away from to the electron weighing machine has the sloping block, the inside fixed mounting of box has powder storage cylinder and electric putter, electric putter's expansion end fixed mounting has the removal subassembly, one side and the removal subassembly of slip subassembly offset, the opposite side of slip subassembly offsets with the bottom of electron weighing machine.

Example 2:

as shown in fig. 1 to 10, a metal powder circulating device for a spindle SLM metal printer comprises a powder suction device, a powder sieving machine and a metering powder feeding device;

a suction head of the powder suction device can directly extend into the printing chamber to suck redundant metal powder in the printing chamber; the powder feeding pipe is communicated with the printing chamber to suck redundant metal powder in the printing chamber;

the powder supply port can directly extend into the printing chamber to supply powder to structures such as a powder spreading device in the printing chamber; in practical application, the printing chamber can also be used as a temporary metal powder storage place of the powder cylinder/powder spreading device, namely the printing base shaft is positioned in the whole printing chamber, and the printing chamber can also be used as a powder cylinder, and the metal powder can be circulated by rotating to stick powder (namely, spreading the powder).

As shown in fig. 2 to 4, the powder suction device of the present invention includes a second box, a support is fixedly mounted on a side wall of the second box, a second housing is fixedly mounted inside the second box, a second motor is fixedly mounted inside the second housing, an output shaft of the second motor is fixedly connected with a rotation assembly, a powder suction assembly and a second transmission assembly are disposed inside the second box, the second transmission assembly is in transmission connection with the rotation assembly, the powder suction assembly is communicated with a top of the second housing, a first sleeve block and a second sleeve block are fixedly mounted on an outer surface of the powder suction assembly, the second sleeve block is in sliding connection with an upper surface of the support, a second connecting rod is rotatably connected to a bottom of the first sleeve block through a rotating shaft, a bottom of the second connecting rod is rotatably connected to the second transmission assembly through a rotating shaft, a powder storage assembly is fixedly connected to an inside of the second box through a bolt, and the powder storage assembly is communicated with a bottom of the second housing through a pipeline.

Wherein, the surface of support runs through and threaded connection has the gag lever post, and the top fixed mounting of gag lever post has the clamp plate. When the box is used, the bracket and the external base plate are effectively fixed through the matching of the limiting rod, the pressing plate and other structures, so that the second box body is quickly installed, and the overall firmness is better.

As shown in fig. 5 to 7, the powder sieving machine according to the present invention includes a first box, a first motor and a first housing are fixedly installed inside the first box, the first motor has a forward and reverse rotation function, a stirring assembly is installed inside the first housing, the stirring assembly is fixedly connected to an output shaft of the first motor, a first transmission assembly is installed inside the first box, the first transmission assembly is in transmission connection with the stirring assembly, a sieving assembly is rotatably connected to an inner side wall of the first box through a rotating shaft, the sieving assembly is rotatably connected to a first connecting rod through a rotating shaft, a top of the first connecting rod is rotatably connected to the first transmission assembly through a rotating shaft, two receiving boxes are installed inside the first box and below the sieving assembly, a blanking assembly is arranged on an upper surface of the first box in a penetrating manner, and the blanking assembly is connected to a top of the first housing through a first hose.

Wherein, the unloading subassembly includes the sleeve, and the equal fixed mounting in telescopic surface both sides has the separation blade, and telescopic top is connected with the apron through the pivot rotation. The powder storage cylinder of the powder suction device is communicated with a sleeve of the powder sieving machine through a powder feeding pipe, specifically, the powder feeding pipe can be communicated with the sleeve of the powder sieving machine through/without a cover plate, the cover plate can be turned over when in use, metal powder is directly added into the sleeve and is sent into the first shell through a first hose, and a first motor is started at the same time; in the process, the sleeve can be taken up through the blocking piece, so that more convenient blanking can be realized, the cover plate can also play a role in closing, impurities such as dust and the like are prevented from falling into the sleeve when the blanking device is used, and the sleeve is convenient to clean and maintain.

As shown in fig. 8-10, the metering powder feeding device of the present invention includes a mounting plate, a receiving hopper is fixedly installed on the surface of the mounting plate in a penetrating manner, a central shaft, a box body and a sliding assembly are fixedly installed on the top of the mounting plate, the top of the central shaft is rotatably connected with an electronic weighing device through a rotating shaft, a supporting assembly is arranged between the bottom of the electronic weighing device and the upper surface of the mounting plate, an inclined block is fixedly installed on one side of the electronic weighing device far away from the supporting assembly, a powder storage cylinder and an electric push rod are fixedly installed inside the box body, a moving assembly is fixedly installed at the movable end of the electric push rod, one side of the sliding assembly abuts against the moving assembly, and the other side of the sliding assembly abuts against the bottom of the electronic weighing device. Among them, the electronic weighing machine is a mature technology in the prior art, and will not be described in detail here.

Specifically, a dovetail block is fixedly mounted at the bottom of the second sleeve block, and a dovetail groove is formed in the upper surface of the support. The rotating assembly comprises a central shaft, and a first helical gear and a plurality of fan blades are fixedly mounted on the outer surface of the central shaft. The powder absorbing assembly comprises a connecting pipe, one end of the connecting pipe is communicated with a suction head, and the other end of the connecting pipe is communicated with a second hose. The second transmission assembly comprises a round rod, the round rod is rotatably connected with the side wall of the second shell, a second helical gear is fixedly mounted at one end of the round rod, and a turntable is fixedly mounted at the other end of the round rod. When the powder collecting device is used, the second motor is started to drive the central shaft, the first helical gear and the plurality of fan blades to start rotating, and the fan blades are matched with the second hose, the connecting pipe and the suction head to collect metal powder and guide the metal powder from the second shell to the powder storage assembly through the pipeline; the first helical gear and the second helical gear are meshed to drive the turntable to synchronously rotate, and the connecting pipe and the suction head are driven to reciprocate back and forth under the matching of structures such as the turntable, the second connecting rod, the first sleeve block, the rotating shaft and the like, so that the powder recycling and sucking effect can be greatly improved, and the effective recycling of metal powder is ensured; in the process, the dovetail block, the dovetail groove and other structures are matched, so that the stability of the connecting pipe and the suction head in the moving process can be effectively improved, and the experience of the product is better.

Specifically, the side wall of the second box body is rotatably connected with a side door through a hinge, and a second handle is fixedly mounted on the side wall of the side door. Store up the powder subassembly including storing up the powder jar, store up the lateral wall hinge of powder jar and changeing the connection and have the baffle, the surperficial gomphosis of baffle has ventilative net. When metal powder flows into the powder storage tank through the pipeline, the metal powder is effectively blocked under the action of the ventilation net, and the side door is opened through the second handle, so that the partition plate can be rotated, and the metal powder in the powder storage tank is quickly treated.

The specific working principle and the using method of the powder suction device are as follows: when the second box body is used, the support and the external substrate are effectively fixed through the matching of structures such as the limiting rod and the pressing plate, and the second box body is further quickly installed; then a second motor is started to drive a central shaft, a first helical gear and a plurality of fan blades to start rotating, the fan blades are matched with a second hose, a connecting pipe and a suction head (moved to a position where metal powder needs to be recovered) to recover the metal powder, and the metal powder is guided to a powder storage cylinder from a second shell through a pipeline; the first helical gear and the second helical gear are meshed to drive the turntable to synchronously rotate, and the connecting pipe and the suction head are driven to reciprocate back and forth under the matching of structures such as the turntable, the second connecting rod, the first sleeve block, the rotating shaft and the like, so that the powder recycling and sucking effect can be greatly improved, and the effective recycling of metal powder is ensured; when metal powder flowed into the inside of storing up the powder jar, effectively blocked under the effect of ventilative net, and open the side door through the second handle, can rotate the baffle, carry out rapid draing to the metal powder of storing up the inside of powder jar, easy operation just satisfied more demands in the in-service use, the practicality is higher.

Specifically, the stirring assembly comprises a supporting rod, and a first belt pulley and a plurality of stirring rods are fixedly arranged on the outer surface of the supporting rod. The first transmission assembly comprises a long rod, the top of the long rod is rotatably connected with the inner wall of the first box body through a bearing, a second belt pulley is fixedly arranged on the outer surface of the long rod, and a rectangular block is connected to the outer surface of the long rod in a threaded manner. The screening subassembly includes the fixed plate, and the upper surface of fixed plate runs through to be seted up places the hole, and the pore wall fixed mounting who places the hole has the screening net. Starting a first motor to drive a first belt pulley and a plurality of stirring rods to start rotating, wherein the stirring rods start stirring and scattering metal powder falling into a first shell, then the metal powder flows onto a screening net from the lower part, the screened metal powder falls into a storage box on the right side, and large particles are blocked on the screening net; first belt pulley drives second belt pulley and stock and begins to rotate, under the cooperation of stock, rectangular block, head rod and pivot isotructure, can realize the intermittent type nature swing of screening net, and then can make the epaxial big particulate matter of screening roll to the left side containing box in from placing the hole, both reduced the piling up of the online big particulate matter of screening, the later stage of also being convenient for is better to large granule thing and screening back metal powder's centralized processing, the experience of product is felt.

Specifically, the front surface of the first box body is rotatably connected with a door panel through a hinge, and a first handle is fixedly arranged on the front surface of the door panel. After the screening is finished, the door plate is opened through the first handle, so that the two storage boxes can be taken out, and the screened objects inside are rapidly processed.

The specific working principle and the using method of the powder sieving machine provided by the invention are as follows: metal powder is sent into the first shell through a sleeve and a first hose, a first motor is started to drive a first belt pulley and a plurality of stirring rods to rotate, the stirring rods start stirring and scattering the metal powder falling into the first shell, then the metal powder flows onto a screen from the lower part, the screened metal powder falls into a storage box on the right side, and large particles are blocked on the screen; first belt pulley drives second belt pulley and stock and begins to rotate, under the cooperation of stock, the rectangular block, head rod and pivot isotructure, can realize the intermittent type nature swing of screening net, and then can make the screening net on the big particulate matter roll to the left side containing box from placing the hole in, both reduced the piling up of screening net on the big particulate matter, the later stage of also being convenient for is to the centralized processing of large granule thing and screening back metal powder, more demands in the in-service use have been satisfied, the practicality is higher.

Specifically, the surface of the mounting plate is provided with a limiting hole in a penetrating mode. When in use, the device is fixed to a proper position by matching the mounting plate, the limiting hole, the bolt and other structures, and the firmness of the device is ensured.

Specifically, the upper surface of box is connected with the third apron through the hinge rotation, and the top fixed mounting of third apron has the third handle. Add the inside of storing up the powder jar with metal powder during the use to close the third apron through the third handle, can play the effective sealing effect to storing up the inside metal powder of powder jar, and then can reduce adhering to of debris such as dust, guarantee metal powder's overall quality, still be convenient for overhaul the maintenance to storing up the inside condition of powder jar, go back the manual work and add metal powder to storing up the powder jar inside through opening the third apron.

Specifically, two guide plates are fixedly mounted on the upper surface of the electronic weighing device and are symmetrically arranged. The supporting component comprises a telescopic rod, the two ends of the telescopic rod are respectively connected with the bottom of the electronic weighing device and the upper surface of the mounting plate in a rotating mode through rotating shafts, and a spring is sleeved on the outer surface of the telescopic rod. The movable assembly comprises a partition plate, a baffle plate, a first trapezoid block and a second trapezoid block are fixedly mounted on the side wall of the partition plate, and a supporting plate is fixedly mounted on the side wall, far away from the partition plate, of the second trapezoid block. The second trapezoidal block has a slope greater than that of the first trapezoidal block. The sliding assembly comprises a supporting column, a third sleeve is fixedly mounted at the top of the supporting column, and a push rod is sleeved inside the third sleeve. The metal powder flows onto the electronic weighing device from the powder storage cylinder, when the metal powder flows to a certain degree, the electric push rod is started to drive the partition plate to move, the baffle plate, the first trapezoid block, the second trapezoid block and the supporting plate are further driven to move synchronously, and the baffle plate blocks the powder storage cylinder in the moving process to stop the blanking; the first trapezoid block enables the electronic weighing machine to incline under the matching of the inclined block, and then the first trapezoid block is matched with the guide plate to enable the metal powder to flow to the receiving hopper; the supporting plate is matched with structures such as a supporting column and a third sleeve, so that the ejector rod is firstly kept still and then moves to the bottom of the electronic weighing device under the action of the second trapezoid block, and the ejector rod finally catches up with the electronic weighing device and plays a role in knocking the electronic weighing device because the gradient of the second trapezoid block is larger than that of the first trapezoid block, so that the metal powder on the top can be effectively conveyed to the receiving hopper; when electric putter drove the structure such as baffle and resets, under the cooperation of telescopic link, spring, ejector pin and layer board isotructure, the electronic weighing device automatic re-setting is ready for next material receiving measurement, and the experience of product feels better.

The specific working principle and the using method of the metering powder feeding device are as follows:

when the powder storage cylinder is used, the third cover plate is closed through the third handle, the effective sealing effect on metal powder in the powder storage cylinder can be achieved, the powder feeding pipe conveys the metal powder to the inside of the powder storage cylinder, the metal powder flows onto the electronic weighing device from the inside of the powder storage cylinder, when the metal powder flows to a certain degree, the electric push rod is started to drive the partition plate to move, the baffle plate, the first trapezoid block, the second trapezoid block and the supporting plate are further synchronously driven to move synchronously, and the baffle plate blocks the powder storage cylinder in the moving process to stop the blanking; the first trapezoid block enables the electronic weighing device to incline under the matching of the inclined block, and then the first trapezoid block is matched with the guide plate to enable metal powder to flow to the receiving hopper; the supporting plate is matched with structures such as a supporting column and a third sleeve, so that the ejector rod is firstly kept still and then moves to the bottom of the electronic weighing device under the action of the second trapezoid block, and the ejector rod finally catches up with the electronic weighing device and plays a role in knocking the electronic weighing device because the gradient of the second trapezoid block is larger than that of the first trapezoid block, so that the metal powder on the top can be effectively conveyed to the receiving hopper; when electric putter drove the baffle isotructure and reset, under the cooperation of telescopic link, spring, ejector pin and layer board isotructure, electronic weighing machine automatic re-setting is ready for next connecing the material measurement, and the experience of product is felt better, and the practicality is higher.

According to the description and the drawings of the invention, the metal powder circulating device for the base shaft type SLM metal printer can be easily manufactured or used by a person skilled in the art, and can generate the positive effects recorded by the invention.

Unless otherwise specified, in the present invention, if there is an orientation or positional relationship indicated by terms of "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, rather than to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore, the terms describing orientation or positional relationship in the present invention are for illustrative purposes only, and should not be construed as limiting the present patent, specific meanings of the above terms can be understood by those of ordinary skill in the art in light of the specific circumstances in conjunction with the accompanying drawings.

Unless expressly stated or limited otherwise, the terms "disposed," "connected," and "connected" are used broadly and encompass, for example, being fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications and equivalent variations of the above embodiments according to the technical spirit of the present invention are included in the scope of the present invention.

Claims

1. The utility model provides a base shaft formula SLM metal powder circulating device for metal printer which characterized in that: comprises a powder suction device (2), a powder screening machine (1) and a metering powder feeding device (03);

the powder storage cylinder (21201) of the powder suction device (2) is communicated with the sleeve (1501) of the powder sieving machine (1) through a powder feeding pipe (3); a vacuum conveyor (4) is arranged on the powder feeding pipe (3);

the storage box (110) of the powder sieving machine (1) is communicated with the powder storage cylinder (37) of the metering powder feeding device (03) through the powder feeding pipe (3); a vacuum conveyor (4) is arranged on a powder feeding pipe (3) between the powder sieving machine (1) and the metering powder feeding device (03);

the receiving hopper (32) of the metering powder feeding device (03) is communicated with the powder supply port (301) through a powder feeding pipe (3); a vacuum conveyor (4) is arranged on the powder feeding pipe (3) between the metering powder feeding device (03) and the powder supply port (301);

the powder suction device comprises a second box body (21), a support (22) is fixedly mounted on the side wall of the second box body (21), a second shell body (23) is fixedly mounted inside the second box body (21), a second motor (24) is fixedly mounted inside the second shell body (23), an output shaft of the second motor (24) is fixedly connected with a rotating assembly (25), a powder suction assembly (26) and a second transmission assembly (27) are arranged inside the second box body (21), the second transmission assembly (27) is in transmission connection with the rotating assembly (25), the powder suction assembly (26) is communicated with the top of the second shell body (23), a first sleeve block (29) and a second sleeve block (210) are fixedly mounted on the outer surface of the powder suction assembly (26), the second sleeve block (210) is in sliding connection with the upper surface of the support (22), and a second connecting rod (28) is rotatably connected to the bottom of the first sleeve block (29) through a rotating shaft, the bottom of the second connecting rod (28) is rotatably connected with a second transmission assembly (27) through a rotating shaft, the interior of the second box body (21) is fixedly connected with a powder storage assembly (212) through a bolt, and the powder storage assembly (212) is communicated with the bottom of the second shell (23) through a pipeline (211);

the powder screening machine comprises a first box body (11), a first motor (12) and a first shell body (13) are fixedly mounted inside the first box body (11), a stirring assembly (14) is arranged inside the first shell body (13), the stirring assembly (14) is fixedly connected with an output shaft of the first motor (12), a first transmission assembly (17) is arranged inside the first box body (11), the first transmission assembly (17) is in transmission connection with the stirring assembly (14), the inner side wall of the first box body (11) is rotatably connected with a screening assembly (18) through a rotating shaft, the screening assembly (18) is rotatably connected with a first connecting rod (19) through a rotating shaft, the top of the first connecting rod (19) is rotatably connected with the first transmission assembly (17) through a rotating shaft, two storage boxes (110) are arranged inside the first box body (11) and below the screening assembly (18), a blanking assembly (15) penetrates through the upper surface of the first box body (11), and the blanking assembly (15) is communicated with the top of the first shell (13) through a first hose (16);

the metering powder feeding device comprises a mounting plate (31), the surface of the mounting plate (31) is penetrated through and fixedly mounted with a receiving hopper (32), the top fixed mounting of the mounting plate (31) is provided with a central shaft (33), a box body (36) and a sliding component (311), the top of the central shaft (33) is connected with an electronic weighing device (34) through a rotating shaft in a rotating manner, a supporting component (35) is arranged between the bottom of the electronic weighing device (34) and the upper surface of the mounting plate (31), one side of the electronic weighing device (34) far away from the supporting component (35) is fixedly provided with an inclined block (310), the internal fixed mounting of the box body (36) is provided with a powder storage cylinder (37) and an electric push rod (38), the movable end of the electric push rod (38) is fixedly provided with a moving component (39), one side of the sliding component (311) is offset with the moving component (39), the other side of the sliding component (311) is propped against the bottom of the electronic weighing device (34);

the supporting assembly (35) comprises a telescopic rod (3501), two ends of the telescopic rod (3501) are respectively and rotatably connected with the bottom of the electronic weighing machine (34) and the upper surface of the mounting plate (31) through rotating shafts, and a spring (3502) is sleeved on the outer surface of the telescopic rod (3501);

the moving assembly (39) comprises a partition plate (3901), a baffle plate (3902), a first trapezoidal block (3903) and a second trapezoidal block (3904) are fixedly mounted on the side wall of the partition plate (3901), and a supporting plate (3905) is fixedly mounted on the side wall, far away from the partition plate (3901), of the second trapezoidal block (3904);

slip subassembly (311) includes pillar (31101), the top fixed mounting of pillar (31101) has third sleeve (31102), the inside cover of third sleeve (31102) is equipped with ejector pin (31103).

2. The metal powder circulating device for the base axis type SLM metal printer according to claim 1, characterized in that: the last fixed surface of electron weighing machine (34) installs two guide plates (312), two guide plate (312) are the symmetry and set up, spacing hole (315) have been run through on the surface of mounting panel (31).

3. The metal powder circulating device for the base axis type SLM metal printer according to claim 1, characterized in that: the upper surface of box (36) is connected with third apron (313) through the hinge rotation, the top fixed mounting of third apron (313) has third handle (314).

4. The metal powder circulating device for the base axis type SLM metal printer according to claim 1, characterized in that: the lateral wall of second box (21) has side door (213) through hinge rotation connection, the lateral wall fixed mounting of side door (213) has second handle (214), the surface of support (22) runs through and threaded connection has gag lever post (215), the top fixed mounting of gag lever post (215) has clamp plate (216), the bottom fixed mounting of second nest of blocks (210) has dovetail block (217), dovetail (218) have been seted up to the upper surface of support (22).

5. The metal powder circulating device for the base axis type SLM metal printer according to claim 1, characterized in that: the rotating assembly (25) comprises a central shaft (2501), and a first bevel gear (2502) and a plurality of fan blades (2503) are fixedly mounted on the outer surface of the central shaft (2501).

6. The metal powder circulating device for the base axis type SLM metal printer according to claim 1, characterized in that: the powder absorbing assembly (26) comprises a connecting pipe (2601), one end of the connecting pipe (2601) is communicated with a suction head (2602), and the other end of the connecting pipe (2601) is communicated with a second hose (2603).

7. The metal powder circulating device for the base shaft type SLM metal printer according to claim 1, characterized in that: the second transmission assembly (27) comprises a round rod (2701), the round rod (2701) is rotatably connected with the side wall of the second shell (23), one end of the round rod (2701) is fixedly provided with a second bevel gear (2702), and the other end of the round rod (2701) is fixedly provided with a turntable (2703);

the powder storage assembly (212) comprises a powder storage cylinder (21201), a clapboard (212002) is hinged and connected to the side wall of the powder storage cylinder (212001), and a breathable net (21203) is embedded on the surface of the clapboard (21202);

the front surface of the first box body (11) is rotatably connected with a door panel (111) through a hinge, and a first handle (112) is fixedly mounted on the front surface of the door panel (111);

the stirring assembly (14) comprises a support rod (1401), and a first belt pulley (1402) and a plurality of stirring rods (1403) are fixedly installed on the outer surface of the support rod (1401);

the blanking assembly (15) comprises a sleeve (1501), blocking pieces (1502) are fixedly mounted on two sides of the outer surface of the sleeve (1501), and the top of the sleeve (1501) is rotatably connected with a cover plate (1503) through a rotating shaft;

the first transmission assembly (17) comprises a long rod (1701), the top of the long rod (1701) is rotatably connected with the inner wall of the first box body (11) through a bearing, a second belt pulley (1702) is fixedly installed on the outer surface of the long rod (1701), and a rectangular block (1703) is connected to the outer surface of the long rod (1701) in a threaded mode;

the screening component (18) comprises a fixing plate (1801), a placing hole (1802) penetrates through the upper surface of the fixing plate (1801), and a screening net (1803) is fixedly mounted on the hole wall of the placing hole (1802).