CN114714616A - Powder component controllable powder spreading integrated device and working method - Google Patents

Powder component controllable powder spreading integrated device and working method Download PDF

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Publication number
CN114714616A
CN114714616A CN202210210087.XA CN202210210087A CN114714616A CN 114714616 A CN114714616 A CN 114714616A CN 202210210087 A CN202210210087 A CN 202210210087A CN 114714616 A CN114714616 A CN 114714616A
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powder
box
groove
plate
top plate
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CN114714616B (en
Inventor
王飞
许伟春
孙靖
祝智强
陈裕梁
朱小刚
张骏
袁定新
田永松
季长程
赵凯
张春杰
杨洋
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Shanghai Aerospace Equipments Manufacturer Co Ltd
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Shanghai Aerospace Equipments Manufacturer Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/10—Processes of additive manufacturing
    • B29C64/141—Processes of additive manufacturing using only solid materials
    • B29C64/153—Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/30—Auxiliary operations or equipment
    • B29C64/307—Handling of material to be used in additive manufacturing
    • B29C64/314—Preparation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/30—Auxiliary operations or equipment
    • B29C64/386—Data acquisition or data processing for additive manufacturing
    • B29C64/393—Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
    • B33Y40/10—Pre-treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y50/00—Data acquisition or data processing for additive manufacturing
    • B33Y50/02—Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/25—Process efficiency

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mechanical Engineering (AREA)

Abstract

The invention provides a powder component controllable powder paving integrated device and a working method, wherein the powder component controllable powder paving integrated device comprises the following steps: the intelligent powder dropping device comprises a linear motion module, a sliding connection block, a guide rod, an intelligent powder dropping mechanism assembly and a central controller; the sliding connection block is arranged on the linear motion module and is allowed to move along the extension direction of the linear motion module; the guide rod is arranged on the sliding connection block and moves relative to the linear motion module through the sliding connection block, and the extending direction of the guide rod is vertical to the extending direction of the linear motion module; the intelligent powder falling mechanism assembly is arranged on the guide rod and is allowed to move along the extension direction of the guide rod, and the intelligent powder falling mechanism assembly is allowed to move relative to the linear motion module through the sliding connection block; the invention solves the problem that the powder spreading process in the existing additive manufacturing process can only form a powder bed of one layer of the same material, realizes the function of controllable material components in each area of the powder bed, and lays a foundation for research on related processes such as gradient materials and the like.

Description

Powder component controllable powder spreading integrated device and working method
Technical Field
The invention relates to the field of additive manufacturing, in particular to a powder component controllable powder laying integrated device and a working method; in particular to an integrated device and a method for realizing controllable powder components in a powder bed forming area for additive manufacturing and powder laying.
Background
Currently, in conventional additive manufacturing processes, there is only one homogenous powder bed. With the increasing demand for specific properties of workpieces, such as further research on gradient materials, powder beds capable of realizing different material ratios at different parts of the workpiece are urgently needed.
Patent document CN111922339A relates to a powder bed 3D printing method and apparatus, in which a first focal plane is located at the interface of a previous solidified layer and a subsequent powder layer when a laser beam scans a support area. Thus, the upper cone of the laser beam is used to heat the subsequent powder layer and the lower cone is used to heat the previous solidified layer, so that the previous solidified layer will be melted again at the same time as the new melt produced by the melting of the powder, thereby ensuring that the subsequent solidified layer is tightly bonded to the previous solidified layer. When the laser beam scans the suspension area, the second focal plane is moved upward by a first thickness relative to the first focal plane, so that the upper surface of the newly formed melt coincides with the second focal plane.
Patent document CN112092364A relates to a powder bed 3D printing apparatus and a powder spreading device thereof, wherein powder in a powder box is primarily spread on the surface of a conveyor belt through a powder outlet to obtain a pre-spread powder layer. As the conveyor belt continues to circulate, powder on its surface will detach from it. And as the support frame moves in a first direction, powder that is detached from the conveyor belt will be transferred to the surface of the powder spreading platform in sequence.
The above-mentioned prior patents fail to solve the problem of different material ratios at different parts of the workpiece.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide an integrated device for controllable powder laying of powder components and a working method.
According to the invention, the powder component controllable powder spreading integrated device comprises: the intelligent powder dropping device comprises a linear motion module, a sliding connection block, a guide rod, an intelligent powder dropping mechanism assembly and a central controller;
the sliding connection block is arranged on the linear motion module and is allowed to move along the extension direction of the linear motion module;
the guide rod is arranged on the sliding connection block and moves relative to the linear motion module through the sliding connection block, and the extending direction of the guide rod is perpendicular to the extending direction of the linear motion module;
the intelligent powder falling mechanism assembly is mounted on the guide rod and is allowed to move along the extension direction of the guide rod, and the intelligent powder falling mechanism assembly is allowed to move relative to the linear motion module through the sliding connection block;
the intelligent powder falling mechanism assembly is provided with a powder outlet spray head assembly, and the powder outlet spray head assembly allows the powder outlet spray head assembly to move along the extension direction of the linear motion module and the guide rod and covers a forming area;
the intelligent powder falling mechanism assembly and the linear motion module are connected with the central controller.
Preferably, the intelligent powder falling mechanism assembly further comprises: the powder discharging device comprises a powder box, a powder falling mechanism box body, a second powder discharging pipe, a vibration box, a sliding cover plate, a first electromagnetic valve, a powder discharging groove and a parallel powder discharging groove movement mechanism;
a plurality of powder boxes are arranged on the outer side of the top of the powder falling mechanism box body, a plurality of parallel powder discharging groove moving mechanisms are arranged on the inner side of the top of the powder falling mechanism box body, the powder boxes correspond to the parallel powder discharging groove moving mechanisms one by one, and through holes are formed between the corresponding powder boxes and the parallel powder discharging groove moving mechanisms;
the vibration box is arranged in the box body of the powder falling mechanism and is connected with the parallel powder falling groove movement mechanism through a second powder falling pipe;
a powder outlet groove is formed in the bottom of the vibration box, and a sliding cover plate is arranged between the powder outlet groove and the vibration box;
the powder discharging mechanism is characterized in that a powder discharging nozzle assembly is arranged on the outer side of the bottom of the box body of the powder discharging mechanism, the powder discharging nozzle assembly is communicated with a powder discharging groove, and a first electromagnetic valve is arranged between the powder discharging nozzle assembly and the powder discharging groove.
Preferably, the powder box comprises: the device comprises a push rod, a top cover, a piston plate, a powder box wall plate and a drawing plate;
the powder box wall plate is arranged on the powder falling mechanism box body, a drawing plate is arranged between the powder box wall plate and the powder falling mechanism box body, and a top cover is arranged at one end, back to the powder falling mechanism box body, of the powder box wall plate;
an opening of one side, facing the drawing plate, of the powder box wall plate is set to be a lower opening;
a piston plate is arranged in the powder box wall plate, and a push rod is arranged on one side of the piston plate, which is back to the drawing plate;
powder is placed between the piston plate and the drawing plate.
Preferably, the parallel powder tank discharging movement mechanism comprises: the second electromagnetic valve, the third electromagnetic valve, the second powder discharging groove, the second sealing top plate, the first sealing top plate, the horizontal moving device and the first powder discharging groove are arranged on the first powder discharging groove;
the horizontal movement device, the first sealing top plate and the second sealing top plate are arranged on the inner side of the top of the powder falling mechanism box body;
the horizontal movement device is connected with and drives the first sealing top plate and the second sealing top plate to move, and the powder box drives the first sealing top plate and the second sealing top plate to move through the horizontal movement device so as to realize butt joint of the first sealing top plate or the second sealing top plate and the powder box;
a first powder discharging groove is formed in one side, back to the inner wall of the top of the powder falling mechanism box body, of the first sealing top plate, and a second powder discharging groove is formed in one side, back to the inner wall of the top of the powder falling mechanism box body, of the second sealing top plate;
the second electromagnetic valve is arranged on one side of the first powder dropping groove back to the first sealing top plate, and the third electromagnetic valve is arranged on one side of the second powder dropping groove back to the second sealing top plate;
and openings are formed in the first sealing top plate and the second sealing top plate.
Preferably, the first powder dropping groove is connected with the powder circulating module through a first powder dropping pipe;
the side wall of the powder falling mechanism box body is provided with a powder falling pipe connecting block, and the first powder falling pipe penetrates through the powder falling mechanism box body through the powder falling pipe connecting block;
the powder circulating module is connected with the powder box, and a fourth electromagnetic valve is arranged between the powder circulating module and the powder box;
and an air extracting device, a filtering device and an exhaust device are arranged in the powder circulating module.
Preferably, the powder outlet nozzle assembly comprises: the front end powder outlet nozzle, the vibrator and the front end powder outlet groove;
the front-end powder outlet groove is communicated with the powder outlet groove, and a front-end powder outlet fine opening extends outwards from one end of the front-end powder outlet groove, which is back to the powder outlet groove;
the front powder outlet fine opening is a rectangular outlet;
and the vibrator is arranged on the side surface of the joint of the front-end powder outlet groove and the front-end powder outlet fine opening in a surrounding manner.
Preferably, a plurality of powder quantity monitoring feedback modules are installed on the outer side of the powder falling mechanism box body;
and one powder quantity monitoring feedback module is arranged on the side edge of each powder box.
Preferably, an O-ring seal is disposed at a position where the powder box is connected to the powder falling mechanism box body, on the periphery of the opening of the first sealing top plate, and on the periphery of the opening of the second sealing top plate.
Preferably, said piston plate is permitted to rotate about said bin cross-section axis;
the molding region is arranged with a plurality of square regions.
Preferably, a working method of the powder component controllable powder laying integrated device comprises the following steps:
step S1, the central controller controls to close the pull plates of the powder boxes, then controls the piston plates in all the powder boxes to rotate, and respectively puts different types of powder into the powder boxes, wherein the powder surfaces in the powder boxes are uneven;
the central controller controls the horizontal movement device to move, the first powder dropping grooves are respectively aligned to the lower openings of the powder boxes, the second electromagnetic valves are kept in a closed state, then the central controller partially opens all the pulling plates until air in the powder boxes can be exhausted when the piston plates move downwards, all the piston plates rotate to the horizontal position again and control all the push rods to move downwards, powder flows out of the powder boxes and respectively enters the first powder dropping grooves in the moving process of the push rods until no gap exists between the upper surfaces of the powder and the piston plates, and then all the pulling plates are closed;
step S2, the central controller opens all the second electromagnetic valves, closes all the fourth electromagnetic valves at the same time, opens all the air exhaust devices of the powder circulation module, sucks the powder in the first powder discharge groove into the filtering device of the powder circulation module, then closes all the second electromagnetic valves, lifts the piston plate and rotates again, opens all the fourth electromagnetic valves at the same time, opens the exhaust device of the powder circulation module, the powder enters the powder box respectively, then rotates all the piston plates to the horizontal position again, then pushes the piston plate until the lower surfaces of the piston plates are attached to the upper surfaces of the powder, and the central controller controls all the horizontal movement devices to move until all the second powder discharge grooves are aligned to the lower ports of the powder box respectively;
step S3, keeping all the third electromagnetic valves in a closed state, opening the drawing plate, starting the powder quantity monitoring feedback module to work, and recording the height of the powder in each powder box in real time;
step S4, calculating the mass of the powder in each powder box required by each square area according to the mass of the powder required by each square area of the molding area and the preset component proportion, then calculating the corresponding powder descending height according to the density of each powder, and closing the drawing plate of the corresponding powder box after the height of the upper surface of the powder in each powder box is respectively descended by the calculated descending height;
step S5, the central controller opens all the third electromagnetic valves, closes the sliding cover plate at the same time, slides the powder in all the second powder feeding grooves into the vibrating box, then opens the vibrating box, and mixes all the powder uniformly;
step S6, the first electromagnetic valve is closed, a sliding cover plate is opened, the mixed powder reaches the position below the powder outlet groove, then the sliding cover plate is closed, and a central controller opens the vibrator;
opening the first electromagnetic valve, enabling the whole intelligent powder falling mechanism assembly to start to move according to a set track, enabling mixed powder to continuously fall from the front end powder outlet nozzle in the moving process, and completing preparation of a mixed powder layer in a region after the movement of the region is completed;
in the moving process of the intelligent powder falling mechanism assembly in the region, the steps S4 to S6 are repeated at the same time to carry out the proportioning of the mass and the components of the mixed powder in the next region, and when the powder paving in the current region is finished, the mixed powder in the next region is prepared in the vibration box;
step S7, the intelligent powder dropping mechanism component continues to move to finish the powder paving operation of the upper area and the lower area of the movement track until the powder paving operation of the whole forming area is finished, so that the preparation of a layer of complete powder in the forming area is finished, and then the central controller controls the light path system to start working;
and step S8, repeating the steps S3 to S7 until the whole workpiece is formed.
Preferably, the piston plate is rotated 70-80 °.
Preferably, the linear motion module can be a synchronous belt synchronous wheel, a ball screw pair or a linear motor.
Preferably, the powder bin is provided with a circular cross-section.
Preferably, the front end powder outlet fine opening is a rectangular outlet, the size of the short side of the rectangular outlet is 3-5 times of the average particle size of the powder, and the size of the long side of the rectangular outlet is equal to the side length of the square area of the forming area.
Preferably, the openings of the first and second seal top plates are all provided in a circular shape and have the same size.
Compared with the prior art, the invention has the following beneficial effects:
the invention solves the problem that the powder paving process in the existing additive manufacturing process can only form a layer of powder bed made of the same material, realizes the function of controllable material components in each area of the powder bed, and lays a foundation for research on related processes such as gradient materials.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a top view of an integrated device for controlled powder placement of powder components;
FIG. 2 is a schematic structural diagram of an intelligent powder dropping mechanism assembly;
FIG. 3 is a schematic structural view of a powder discharge nozzle assembly;
FIG. 4 is a schematic structural view of a parallel powder feeding groove moving mechanism.
Shown in the figure:
Figure BDA0003530648650000051
Figure BDA0003530648650000061
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 invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications can be made by persons skilled in the art without departing from the concept of the invention. All falling within the scope of the present invention.
Example 1
As shown in fig. 1, the present embodiment includes: the intelligent powder dropping device comprises a linear motion module 1, a sliding connection block 3, a guide rod 4, an intelligent powder dropping mechanism assembly 5 and a central controller; the sliding connection block 3 is installed on the linear motion module 1 and allows movement along the extension direction of the linear motion module 1; the guide rod 4 is installed on the sliding connection block 3 and moves relative to the linear motion module 1 through the sliding connection block 3, the extending direction of the guide rod 4 is perpendicular to the extending direction of the linear motion module 1, the intelligent powder falling mechanism component 5 is installed on the guide rod 4 and is allowed to move along the extending direction of the guide rod 4, the intelligent powder falling mechanism component 5 is allowed to move relative to the linear motion module 1 through the sliding connection block 3, the intelligent powder falling mechanism component 5 is provided with a powder outlet spray head component 511, and the powder outlet spray head component 511 is allowed to move along the extending direction of the linear motion module 1 and the guide rod 4 and covers the forming area 2; the intelligent powder falling mechanism assembly 5 and the linear motion module 1 are connected with a central controller.
As shown in fig. 2, the intelligent powder falling mechanism assembly 5 further includes: the powder box, the powder falling mechanism box body 507, the second powder dropping pipe 508, the vibration box 509, the sliding cover plate 510, the first electromagnetic valve 512, the powder outlet groove 513 and the parallel powder dropping groove moving mechanism 515; a plurality of powder boxes are arranged on the outer side of the top of the powder falling mechanism box body 507, a plurality of parallel powder discharging groove moving mechanisms 515 are arranged on the inner side of the top of the powder falling mechanism box body 507, the powder boxes correspond to the parallel powder discharging groove moving mechanisms 515 one by one, and through holes are formed between the corresponding powder boxes and the parallel powder discharging groove moving mechanisms 515; a vibrating box 509 is arranged in the box body 507 of the powder falling mechanism, the vibrating box 509 is connected with a parallel powder falling groove movement mechanism 515 through a second powder falling pipe 508, a powder outlet groove 513 is arranged at the bottom of the vibrating box 509, and a sliding cover plate 510 is arranged between the powder outlet groove 513 and the vibrating box 509; the powder outlet nozzle assembly 511 is arranged on the outer side of the bottom of the powder falling mechanism box body 507, the powder outlet nozzle assembly 511 is communicated with the powder outlet groove 513, and a first electromagnetic valve 512 is arranged between the powder outlet nozzle assembly 511 and the powder outlet groove 513. The powder case includes: a push rod 501, an overcap 502, a piston plate 503, a powder box wall plate 504 and a drawing plate 506; a powder box wall plate 504 is arranged on a powder falling mechanism box body 507, a drawing plate 506 is arranged between the powder box wall plate 504 and the powder falling mechanism box body 507, and a top cover 502 is arranged at one end of the powder box wall plate 504, which is back to the powder falling mechanism box body 507. The opening of the powder box wall plate 504 towards one side of the drawing plate 506 is set as a lower opening, a piston plate 503 is installed in the powder box wall plate 504, a push rod 501 is installed on one side of the piston plate 503, which is back to the drawing plate 506, and powder 505 is placed between the piston plate 503 and the drawing plate 506. A plurality of powder amount monitoring feedback modules 516 are installed on the outer side of the box body 507 of the powder falling mechanism, and one powder amount monitoring feedback module 516 is installed on the side of each powder box. The molding region 2 is arranged with a plurality of square regions.
As shown in fig. 3, the powder discharge nozzle assembly 511 includes: a front end powder outlet fine opening 5111, a vibrator 5112 and a front end powder outlet groove 5113; the front end powder outlet groove 5113 is communicated with the powder outlet groove 513, one end of the front end powder outlet groove 5113, which faces away from the powder outlet groove 513, extends outwards to form a front end powder outlet thin opening 5111, the front end powder outlet thin opening 5111 is a rectangular outlet, and the vibrator 5112 is arranged around the side face of the connection position of the front end powder outlet groove 5113 and the front end powder outlet thin opening 5111.
As shown in fig. 4, the parallel powder chute moving mechanism 515 includes: a second solenoid valve 5151, a third solenoid valve 5152, a second powder discharging groove 5153, a second sealing top plate 5154, a first sealing top plate 5155, a horizontal moving device 5156 and a first powder discharging groove 5157; the horizontal-movement means 5156 is, the first sealing top plate 5155 and the second sealing top plate 5154 are mounted on the inner side of the top of the powder falling mechanism box body 507, the horizontal movement device 5156 is connected with and drives the first sealing top plate 5155 and the second sealing top plate 5154 to move, the powder box drives the first sealing top plate 5155 and the second sealing top plate 5154 to move through the horizontal movement device 5156 so that the first sealing top plate 5155 or the second sealing top plate 5154 is butted with the powder box, the first powder falling groove 5157 is mounted on one side of the first sealing top plate 5155, which is opposite to the inner wall of the top of the powder falling mechanism box body 507, the second powder falling groove 5153 is mounted on one side of the second sealing top plate 5154, which is opposite to the first sealing top plate 5155, the third electromagnetic valve 5152 is mounted on one side of the second powder falling groove 5153, and openings are formed in the first sealing top plate 5155 and the second sealing top plate 5154. The first powder dropping groove 5157 is connected with the powder circulating module 517 through a first powder dropping pipe 519, a powder dropping pipe connecting block 514 is arranged on the side wall of the powder dropping mechanism box body 507, the first powder dropping pipe 519 penetrates through the powder dropping mechanism box body 507 through the powder dropping pipe connecting block 514, the powder circulating module 517 is connected with a powder box, a fourth electromagnetic valve 518 is arranged between the powder circulating module 517 and the powder box, and an air exhaust device, a filtering device and an exhaust device are arranged in the powder circulating module 517. O-shaped sealing rings are arranged at the position where the powder box is connected with the powder falling mechanism box body 507, on the peripheral side of the opening of the first sealing top plate 5155 and on the peripheral side of the opening of the second sealing top plate 5154. The piston plate 503 allows rotation about the bin cross-sectional axis.
The working method of the powder component controllable powder paving integrated device comprises the following steps: step S1, the central controller controls to close the pull plates 506 of the powder boxes, then controls the piston plates 503 in all the powder boxes to rotate, and puts different kinds of powder 505 into the powder boxes respectively, wherein the surfaces of the powder 505 in the powder boxes are uneven; the central controller controls the horizontal movement device 5156 to move, so that a plurality of first powder dropping grooves 5157 are respectively aligned with the lower openings of the powder boxes, the second electromagnetic valves 5151 are kept in a closed state, then the central controller partially opens all the pulling plates 506 until the air in the powder boxes can be exhausted when the piston plates 503 move downwards, simultaneously all the piston plates 503 are rotated to the horizontal position again and all the push rods 501 are controlled to move downwards, powder 505 flows out of the powder boxes and respectively enters the first powder dropping grooves 5157 during the movement of the push rods 501 until no gap exists between the upper surfaces of the powder 505 and the piston plates 503, and then all the pulling plates 506 are closed; step S2, the central controller opens all the second electromagnetic valves 5151, closes all the fourth electromagnetic valves 518, opens the air extractor of all the powder circulation modules 517, draws the powder 505 in the first dusting grooves 5157 into the filter of the powder circulation modules 517, then closes all the second electromagnetic valves 5151, lifts the piston plate 503 and rotates again, opens all the fourth electromagnetic valves 518, opens the air exhauster of the powder circulation modules 517, the powder 505 enters the powder box respectively, then rotates all the piston plates 503 to the horizontal position again, then pushes the piston plate 503 until the lower surfaces of the piston plates 503 are attached to the upper surfaces of the powder 505, and the central controller controls all the horizontal movement devices 5156 to move until all the second dusting grooves 5153 are aligned to the lower openings of the powder boxes respectively; step S3, keeping all the third electromagnetic valves 5152 in a closed state, opening the drawing plate 506, and then the powder amount monitoring feedback module 516 starts to work to record the height of the powder 505 in each powder box in real time; step S4, calculating the mass of the powder 505 in each powder box required by each square region of the molding region 2 according to the mass of the powder 505 required by each square region and a preset group distribution ratio, then calculating the corresponding height of descent of the powder 505 according to the density of each powder 505, and closing the drawing plate 506 of the corresponding powder box when the height of the upper surface of the powder 505 in each powder box descends by the calculated height of descent respectively; step S5, the central controller opens all the third electromagnetic valves 5152, closes the sliding cover 510 at the same time, slides the powder 505 in all the second powder discharging grooves 5153 into the vibration box 509, then opens the vibration box 509, and mixes all the powder 505 uniformly; step S6, turning off the first electromagnetic valve 512, opening the sliding cover 510, making the mixed powder 505 reach the position below the powder outlet 513, then closing the sliding cover 510, and turning on the vibrator 5112 by the central controller; the first electromagnetic valve 512 is opened, the whole intelligent powder falling mechanism assembly 5 starts to move according to a set track, in the moving process, the mixed powder 505 continuously falls from the front end powder outlet thin opening 5111, and after the movement of an area is completed, the mixed powder layer of the area is ready to be completed; in the moving process of the intelligent powder falling mechanism assembly 5 in the region, the steps S4 to S6 are repeated at the same time to perform the matching of the mass and the components of the mixed powder in the next region, and when the powder spreading in the current region is completed, the mixed powder in the next region is ready to be completed in the vibrating box 509; step S7, the intelligent powder falling mechanism component 5 continues to move, and the powder paving operation of the upper area and the lower area of the motion trail is completed until the powder paving work of the whole forming area 2 is completed, so that the complete layer of powder in the forming area 2 is prepared, and then the central controller controls the light path system to start working; and step S8, repeating the steps S3 to S7 until the whole workpiece is formed.
Example 2
Example 2 is a preferred example of example 1.
As shown in fig. 1, the present embodiment includes: the intelligent powder dropping device comprises a linear motion module 1, a sliding connection block 3, a guide rod 4, an intelligent powder dropping mechanism assembly 5 and a central controller; the intelligent powder falling mechanism component 5 can be driven by the linear motion module 1 through the sliding connection block 3 to move left and right in the horizontal direction, and can also move back and forth in the horizontal direction along the guide rod 4, and the powder outlet spray head component 511 at the bottom of the intelligent powder falling mechanism component 5 can cover the whole forming area 2. The intelligent powder falling mechanism component 5 can uniformly mix a plurality of kinds of powder 505 according to the precise component proportion, then uniformly spread the uniformly mixed powder in a specific micro area of the forming area 2, in the process of spreading powder in the previous micro area, the intelligent powder falling mechanism component 5 can perform the powder mixing process in the next micro area in the motion track, thus after the intelligent powder falling mechanism component 5 moves along the preset motion track, each micro area of the forming area 2 can finish spreading powder according to the preset powder component proportion, after the powder spreading of the whole forming area 2 is finished, the light path system starts to work until the single-layer powder scanning of the forming area 2 is finished, the process is repeated continuously until the forming of the whole workpiece is finished, and each area of the formed workpiece can be according to the preset powder component proportion.
As shown in fig. 2, the intelligent powder dropping mechanism component 5 mainly includes a push rod 501, a top cover 502, a piston plate 503, a powder box wall plate 504, powder 505, a drawing plate 506, a powder dropping mechanism box body 507, a second powder dropping pipe 508, a vibration box 509, a sliding cover plate 510, a powder discharging spray head component 511, a first electromagnetic valve 512, a powder discharging groove 513, a powder dropping pipe connecting block 514, a parallel powder dropping groove moving mechanism 515, a powder amount monitoring feedback module 516, a powder circulating module 517 and a fourth electromagnetic valve 518.
As shown in fig. 3, the powder outlet nozzle assembly 511 comprises a front end powder outlet thin opening 5111, a vibrator 5112 and a front end powder outlet groove 5113, wherein the front end powder outlet thin opening 5111 is a rectangular outlet, the size of the short side of the rectangular outlet thin opening 5111 is 3-5 times of the average particle size of four kinds of powder 505, so that the front end powder outlet thin opening 5111 can discharge powder in a small amount and uniformly, the size of the long side of the rectangular outlet thin opening 5113 is equal to the side length of the micro square area of the molding area 2, the front end powder outlet groove 5113 can store powder to be dropped from the front end powder outlet thin opening 5111 in a small amount, the vibrator 5112 surrounds the bottom of the front end powder outlet groove 5113, and the vibrator 5112 is opened to enable the powder to slide down smoothly, thereby avoiding the powder blockage phenomenon.
As shown in fig. 4, the parallel powder chute moving mechanism 515 includes: the powder discharging mechanism comprises a second electromagnetic valve 5151, a third electromagnetic valve 5152, a first powder discharging groove 5157, a second powder discharging groove 5153, a first sealing top plate 5155, a second sealing top plate 5154 and a horizontal moving device 5156, wherein the first powder discharging groove 5157 and the second powder discharging groove 5153 can store powder 505 falling from corresponding powder boxes, the openings of the first sealing top plate 5155 and the second sealing top plate 5154 are circular and have the same size, meanwhile, the periphery of the openings of the first sealing top plate 5155 and the second sealing top plate 5154 is an O-shaped ring, sealing can be realized with the lower surface of the top plate of the box body 507 of the powder discharging mechanism, and the horizontal moving device 5156 can selectively align the opening of the first powder discharging groove 5157 or the opening of the second powder discharging groove 5153 with the corresponding lower opening of the powder box.
The second powder discharging grooves 5153 corresponding to the four powder boxes are respectively provided with one second powder discharging pipe 508 connected with the vibration box 509, when the sliding cover plate 510 is closed, the third electromagnetic valves 5152 of the four parallel powder discharging groove movement mechanisms 515 are opened, the powder 505 from the four second powder discharging grooves 5153 enters the vibration box 509, and after the vibration box 509 is opened, the four different types of powder from the four second powder discharging grooves 5153 are fully mixed.
The powder circulation module 517 is internally provided with a filtering device, an air extractor and an air exhauster, after the air extractor is opened, the second electromagnetic valve 5151 is opened, the fourth electromagnetic valve 518 is closed, the powder in the first powder dropping groove 5157 is pumped to the filtering device in the powder circulation module 517, then the second electromagnetic valve 5151 is closed, the fourth electromagnetic valve 518 is opened, the air exhauster is opened, the powder passes through the top cover 502 above the powder box after leaving the filtering device and reenters the powder box, the piston plate 503 below the push rod 501 can rotate along an axis perpendicular to the longitudinal section of the powder box, and the powder 505 reentering the powder box can stay below the piston plate 503. The powder quantity monitoring feedback modules 516 are four in number and are respectively arranged on the left sides of the four powder boxes, so that the heights h1, h2, h3 and h4 of the powder 505 in the powder boxes and the descending heights delta h1, delta h2, delta h3 and delta h4 of the top surfaces of the powder 505 can be accurately monitored in real time.
The working method of the present embodiment comprises the following steps:
step T1, firstly, the central controller sends out an instruction to close the drawing plate 506 at the bottom of the four powder boxes, then controls the piston plates 503 in the four powder boxes to rotate 70-80 degrees, then respectively puts four different types of powder into the four powder boxes, at this time, the surfaces of the powder 505 in the four powder boxes are uneven, then the central controller sends out an instruction to control the horizontal movement devices 5156 of the four parallel powder groove movement mechanisms 515 to move, align the four first powder grooves 5157 with the lower openings of the four powder boxes, simultaneously keep the four second electromagnetic valves 5151 in a closed state, then slightly open the drawing plate 506 of the four powder boxes, simultaneously re-rotate the piston plates 503 in the four powder boxes to a horizontal position, then control the four push rods 501 to move downwards, a small amount of powder flows out of the four powder boxes to enter the four first powder grooves 5157 until no gap exists between the upper surface of the powder and the piston plates 503, then the four pull plates 506 are closed;
in step T2, the central controller opens the four second solenoid valves 5151, closes the four fourth solenoid valves 518, opens the air-extracting devices of the four powder circulation modules 517, draws a small amount of powder in the four first powder dropping grooves 5157 into the filtering devices of the four powder circulation modules, respectively, filters out some impurities on the inner tube wall, then closes the four second solenoid valves 5151, lifts the piston plates 503 in the four powder boxes and rotates 70 ° -80 ° again, opens the four fourth solenoid valves 518, opens the air-exhausting devices of the four powder circulation modules 517, allows the powder in the four filtering devices to enter the four powder boxes, then rotates the piston plates 503 in the four powder boxes to the horizontal position again, then pushes the piston plates 503 until the lower surfaces of the piston plates 503 are attached to the upper surfaces of the powder 505, the central controller controls the horizontal movement devices 5156 of the four parallel powder dropping groove movement mechanisms 515 to move to the left, until the four second powder discharging grooves 5153 are completely aligned with the lower openings of the four powder boxes;
step T3, keeping the four third electromagnetic valves 5152 in a closed state, and opening the four pull plates 506 to the same degree, wherein the four powder amount monitoring feedback modules 516 start to work, and the height of the powder 505 in the powder box is recorded in real time;
step T4, calculating the mass of four powders 505 required by each tiny square area according to the powder mass required by each tiny square area of the molding area 2 and the preset component proportion, then calculating the corresponding height Deltah 1, Deltah 2, Deltah 3 and Deltah 4 of the powder 505 to be reduced according to the density of the four powders 505, and closing the corresponding drawing plate 506 when the height of the upper surface of the powder in each powder box is reduced by Deltah 1, Deltah 2, Deltah 3 and Deltah 4;
in step T5, the central controller opens the four third electromagnetic valves 5152, closes the sliding cover 510, slides the four powders 505 in the four second powder feeding grooves 5153 into the vibration box 509, and then opens the vibration box 509, wherein the four powders are mixed with the ground;
step T6, the first electromagnetic valve 512 is closed, the sliding cover 510 is opened, the mixed powder reaches the bottom of the lower tubular area of the powder outlet tank 513, then the sliding cover 510 is closed, the central controller opens the vibrator 5112 of the powder outlet nozzle assembly 511, then the first electromagnetic valve 512 is opened, meanwhile, the whole intelligent powder falling mechanism assembly 5 starts to move according to a preset movement track, during the moving process, the mixed powder continuously falls from the front end powder outlet fine opening 5111 of the powder outlet nozzle assembly 511, after the movement of a tiny area is completed, the preparation of the mixed powder layer of the tiny area is completed, during the moving process of the intelligent powder falling mechanism assembly 5 in the tiny area, according to the mass and group distribution ratio of the mixed powder in the next tiny area on the movement track, the steps T4 to T6 are repeated, when the current tiny area finishes spreading powder, the mixed powder of the next minute area on the movement locus is ready to be completed in the vibration box 509;
step T7, continuing to move the intelligent powder dropping mechanism assembly 5 to finish the powder paving operation of the upper micro area and the lower micro area of the motion trail;
step T8, repeating the above operations until all the powder spreading work in all the micro areas of the whole molding area 2 is completed, so that a complete layer of powder in the molding area 2 is prepared, and then the central controller controls the light path system to start working;
and step T9, continuously repeating the steps according to the single-layer powder supply, powder spreading and scanning method until the whole workpiece is formed, wherein the formed workpiece realizes the presetting of the process material components of each area.
Those skilled in the art will appreciate that, in addition to implementing the system and its various devices, modules, units provided by the present invention as pure computer readable program code, the system and its various devices, modules, units provided by the present invention can be fully implemented by logically programming method steps in the form of logic gates, switches, application specific integrated circuits, programmable logic controllers, embedded microcontrollers and the like. Therefore, the system and various devices, modules and units thereof provided by the invention can be regarded as a hardware component, and the devices, modules and units included in the system for realizing various functions can also be regarded as structures in the hardware component; means, modules, units for performing the various functions may also be regarded as structures within both software modules and hardware components for performing the method.
In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.
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 invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.

Claims (10)

1. An integrated device for controlled placement of powder components, comprising: the intelligent powder dropping device comprises a linear motion module (1), a sliding connection block (3), a guide rod (4), an intelligent powder dropping mechanism assembly (5) and a central controller;
the sliding connection block (3) is mounted on the linear motion module (1) and is allowed to move along the extension direction of the linear motion module (1);
the guide rod (4) is installed on the sliding connection block (3) and moves relative to the linear motion module (1) through the sliding connection block (3), and the extending direction of the guide rod (4) is perpendicular to the extending direction of the linear motion module (1);
the intelligent powder falling mechanism assembly (5) is mounted on the guide rod (4) and is allowed to move along the extension direction of the guide rod (4), and the intelligent powder falling mechanism assembly (5) is allowed to move relative to the linear motion module (1) through the sliding connection block (3);
the intelligent powder falling mechanism assembly (5) is provided with a powder outlet spray head assembly (511), and the powder outlet spray head assembly (511) is allowed to move along the extension direction of the linear motion module (1) and the guide rod (4) and covers the forming area (2);
the intelligent powder falling mechanism assembly (5) and the linear motion module (1) are connected with the central controller.
2. The integrated powder component controlled powder spreading device according to claim 1, wherein the intelligent powder dropping mechanism assembly (5) further comprises: the powder feeding device comprises a powder box, a powder falling mechanism box body (507), a second powder dropping pipe (508), a vibration box (509), a sliding cover plate (510), a first electromagnetic valve (512), a powder outlet groove (513) and a parallel powder dropping groove movement mechanism (515);
a plurality of powder boxes are arranged on the outer side of the top of the powder falling mechanism box body (507), a plurality of parallel powder discharging groove moving mechanisms (515) are arranged on the inner side of the top of the powder falling mechanism box body (507), the powder boxes correspond to the parallel powder discharging groove moving mechanisms (515) one by one, and through holes are formed between the corresponding powder boxes and the parallel powder discharging groove moving mechanisms (515);
the vibration box (509) is arranged in the powder falling mechanism box body (507), and the vibration box (509) is connected with the parallel powder falling groove movement mechanism (515) through a second powder falling pipe (508);
a powder outlet groove (513) is formed in the bottom of the vibration box (509), and a sliding cover plate (510) is installed between the powder outlet groove (513) and the vibration box (509);
powder shower nozzle subassembly (511) set up out in powder mechanism box (507) bottom outside, go out powder shower nozzle subassembly (511) and communicate out powder groove (513), go out and install first solenoid valve (512) between powder shower nozzle subassembly (511) and the play powder groove (513).
3. An integrated powder component controlled dusting device according to claim 2, characterised in that the powder box comprises: the powder box comprises a push rod (501), a top cover (502), a piston plate (503), a powder box wall plate (504) and a drawing plate (506);
the powder box wall plate (504) is arranged on a powder falling mechanism box body (507), a drawing plate (506) is arranged between the powder box wall plate (504) and the powder falling mechanism box body (507), and a top cover (502) is arranged at one end of the powder box wall plate (504) back to the powder falling mechanism box body (507);
an opening of one side, facing the drawing plate (506), of the powder box wall plate (504) is set as a lower opening;
a piston plate (503) is arranged in the powder box wall plate (504), and a push rod (501) is arranged on one side, back to the drawing plate (506), of the piston plate (503);
powder (505) is placed between the piston plate (503) and the drawing plate (506).
4. The integrated device for powder component controlled powder spreading according to claim 3, wherein the parallel lower powder tank moving mechanism (515) comprises: a second electromagnetic valve (5151), a third electromagnetic valve (5152), a second powder falling groove (5153), a second sealing top plate (5154), a first sealing top plate (5155), a horizontal moving device (5156) and a first powder falling groove (5157);
the horizontal movement device (5156), the first sealing top plate (5155) and the second sealing top plate (5154) are arranged on the inner side of the top of the powder falling mechanism box body (507);
the horizontal movement device (5156) is connected with and drives the first sealing top plate (5155) and the second sealing top plate (5154) to move, and the powder box drives the first sealing top plate (5155) and the second sealing top plate (5154) to move through the horizontal movement device (5156) so that the first sealing top plate (5155) or the second sealing top plate (5154) is butted with the powder box;
a first powder dropping groove (5157) is formed in one side, back to the inner wall of the top of the powder dropping mechanism box body (507), of the first sealing top plate (5155), and a second powder dropping groove (5153) is formed in one side, back to the inner wall of the top of the powder dropping mechanism box body (507), of the second sealing top plate (5154);
the second electromagnetic valve (5151) is arranged on the side of the first lower powder groove (5157) back to the first sealing top plate (5155), and the third electromagnetic valve (5152) is arranged on the side of the second lower powder groove (5153) back to the second sealing top plate (5154);
openings are arranged on the first sealing top plate (5155) and the second sealing top plate (5154).
5. The integrated device for controlled powder spreading of powder components of claim 4, wherein: the first lower powder groove (5157) is connected with the powder circulating module (517) through a first lower powder pipe (519);
a powder discharging pipe connecting block (514) is arranged on the side wall of the powder falling mechanism box body (507), and the first powder discharging pipe (519) penetrates through the powder falling mechanism box body (507) through the powder discharging pipe connecting block (514);
the powder circulating module (517) is connected with the powder box, and a fourth electromagnetic valve (518) is arranged between the powder circulating module (517) and the powder box;
and an air exhaust device, a filtering device and an exhaust device are arranged in the powder circulation module (517).
6. Integrated device for the controlled powdering of a component of a powder according to claim 5, characterised in that said powder discharge nozzle assembly (511) comprises: a front end powder outlet fine opening (5111), a vibrator (5112) and a front end powder outlet groove (5113);
the front-end powder outlet groove (5113) is communicated with the powder outlet groove (513), and one end of the front-end powder outlet groove (5113), which is back to the powder outlet groove (513), extends outwards to form a front-end powder outlet fine opening (5111);
the front end powder outlet fine opening (5111) is a rectangular outlet;
the vibrator (5112) is arranged on the side surface of the joint of the front end powder outlet groove (5113) and the front end powder outlet thin opening (5111) in a surrounding mode.
7. The integrated device for controlled powder spreading of powder components of claim 6, wherein: a plurality of powder quantity monitoring feedback modules (516) are arranged on the outer side of the powder falling mechanism box body (507);
and one powder quantity monitoring feedback module (516) is arranged on the side edge of each powder box.
8. The integrated device for controlled powder spreading of powder components as claimed in claim 4, wherein: the powder box is connected with the powder falling mechanism box body (507), and O-shaped sealing rings are arranged on the opening periphery side of the first sealing top plate (5155) and the opening periphery side of the second sealing top plate (5154).
9. The integrated device for controlled powder spreading of powder components as claimed in claim 7, wherein: the piston plate (503) allows rotation about the bin cross-section axis;
the molding region (2) is provided with a plurality of square regions.
10. A method of operating an integrated device for controlled powdering of a powder composition according to claim 9, comprising the steps of:
step S1, the central controller controls to close the pull plates (506) of the powder boxes, then controls the piston plates (503) in all the powder boxes to rotate, and puts different kinds of powder (505) into the powder boxes respectively, wherein the surfaces of the powder (505) in the powder boxes are uneven;
the central controller controls the horizontal movement device (5156) to move, a plurality of first powder dropping grooves (5157) are respectively aligned to the lower openings of the powder boxes, the second electromagnetic valves (5151) are kept in a closed state, then the central controller partially opens all the pulling plates (506) until the air in the powder boxes can be exhausted when the piston plates (503) move downwards, simultaneously all the piston plates (503) rotate to the horizontal position again and control all the push rods (501) to move downwards, powder (505) flows out of the powder boxes and respectively enters the first powder dropping grooves (5157) during the movement of the push rods (501) until no gap exists between the upper surface of the powder (505) and the piston plates (503), and then all the pulling plates (506) are closed;
step S2, the central controller opens all the second electromagnetic valves (5151) and closes all the fourth electromagnetic valves (518) at the same time, the air extractor of all the powder circulation modules (517) is opened to extract the powder (505) in the first powder dropping groove (5157) into the filter device of the powder circulation module (517), then all the second solenoid valves (5151) are closed, the piston plate (503) is lifted and rotated again, simultaneously opening all the fourth electromagnetic valves (518), opening the exhaust device of the powder circulation module (517), respectively entering the powder tank with the powder (505), then all the piston plates (503) are rotated to the horizontal position again, then the piston plates (503) are pushed until the lower surfaces of the piston plates (503) are attached to the upper surface of the powder (505), and the central controller controls all the horizontal movement devices (5156) to move until all the second powder discharging grooves (5153) are aligned with the lower openings of the powder boxes respectively;
step S3, keeping all the third electromagnetic valves (5152) in a closed state, opening the drawing plate (506), starting the powder quantity monitoring feedback module (516) to work at the moment, and recording the height of the powder (505) in each powder box in real time;
step S4, calculating the mass of the powder (505) in each powder box required by each square area according to the mass of the powder (505) required by each square area of the molding area (2) and a preset group distribution ratio, then calculating the corresponding descending height of the powder (505) according to the density of each powder (505), and closing the drawing plate (506) of the corresponding powder box after the height of the upper surface of the powder (505) in each powder box is respectively descended by the calculated descending height;
step S5, the central controller opens all the third electromagnetic valves (5152), closes the sliding cover plate (510), slides the powder (505) in all the second powder dropping grooves (5153) into the vibrating box (509), then opens the vibrating box (509), and mixes all the powder (505) uniformly;
step S6, the first electromagnetic valve (512) is in a closed state, a sliding cover plate (510) is opened, the mixed powder (505) reaches the position below the powder outlet groove (513), then the sliding cover plate (510) is closed, and a central controller opens the vibrator (5112);
opening the first electromagnetic valve (512), enabling the whole intelligent powder falling mechanism assembly (5) to start to move according to a set track, enabling mixed powder (505) to continuously fall from the front end powder outlet nozzle (5111) in the moving process, and enabling a mixed powder layer in a region to be prepared after the movement of the region is completed;
the intelligent powder falling mechanism assembly (5) repeats the steps S4 to S6 to match the mass and the components of the mixed powder in the next area in the moving process of the area, and when the powder paving in the current area is finished, the mixed powder in the next area is prepared in the vibration box (509);
step S7, the intelligent powder falling mechanism component (5) continues to move to finish the powder paving operation of the upper area and the lower area of the movement track until the powder paving operation of the whole forming area (2) is finished, so that the complete layer of powder in the forming area (2) is prepared, and then the central controller controls the light path system to start working;
and step S8, repeating the steps S3 to S7 until the whole workpiece is formed.
CN202210210087.XA 2022-03-03 2022-03-03 Powder component controllable powder spreading integrated device and working method Active CN114714616B (en)

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