CN114714616B - 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
CN114714616B
CN114714616B CN202210210087.XA CN202210210087A CN114714616B CN 114714616 B CN114714616 B CN 114714616B CN 202210210087 A CN202210210087 A CN 202210210087A CN 114714616 B CN114714616 B CN 114714616B
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China
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powder
box
plate
falling mechanism
top plate
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CN202210210087.XA
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Chinese (zh)
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CN114714616A (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

Abstract

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

Description

Powder component controllable powder spreading integrated device and working method
Technical Field
The application relates to the field of additive manufacturing, in particular to a powder component controllable powder paving integrated device and a working method thereof; in particular to an integrated device and a method for powder paving for additive manufacturing, which realize the control of powder components in a powder bed forming area.
Background
Currently, in conventional additive manufacturing processes, there is only one homogeneous powder bed. As the specific performance requirements of workpieces continue to expand, such as further research into gradient materials, there is a strong need for powder beds that can achieve different material ratios for different parts of the workpiece.
Patent document CN111922339a relates to a powder bed 3D printing method and apparatus, in which a first focal plane is located at the junction of a preceding solidified material layer and a following powder layer when a laser beam scans a supporting 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 previously solidified layer, so that the newly formed melt generated by melting the powder will also be melted again at the same time, thereby ensuring that the subsequent solidified layer is tightly bonded to the previously solidified layer. When the laser beam scans the suspended area, the second focal plane moves upwards by a distance of the 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 device and a powder paving device thereof, wherein powder in a powder box is firstly paved on the surface of a conveyor belt through a powder outlet to obtain a pre-paved powder layer. As the belt continues to circulate, powder on its surface will break away from it. And as the carriage moves in the first direction, powder detached from the conveyor belt will be sequentially transferred to the surface of the powder spreading platform.
The above-mentioned prior patent fails to solve the problem of different material ratios of different parts of the workpiece.
Disclosure of Invention
Aiming at the defects in the prior art, the application aims to provide a powder component controllable powder paving integrated device and a working method.
The application provides a powder component controllable powder paving integrated device, which comprises: the intelligent powder falling mechanism comprises a linear motion module, a sliding connecting block, a guide rod, an intelligent powder falling mechanism component and a central controller;
the sliding connecting block is arranged on the linear motion module and allows the sliding connecting block to move along the extending direction of the linear motion module;
the guide rod is arranged on the sliding connecting block and moves relative to the linear motion module through the sliding connecting 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 component is arranged on the guide rod and is allowed to move along the extending direction of the guide rod, and the intelligent powder falling mechanism component is allowed to move relative to the linear motion module through the sliding connecting block;
the intelligent powder falling mechanism component is provided with a powder outlet spray head component which allows the powder outlet spray head component to move along the extending direction of the linear motion module and the guide rod and cover the molding area;
the intelligent powder falling mechanism component and the linear motion module are connected with the central controller.
Preferably, the intelligent powder falling mechanism assembly further comprises: the device comprises a powder box, a powder falling mechanism box body, a second powder discharging pipe, a vibrating box, a sliding cover plate, a first electromagnetic valve, a powder discharging groove and a parallel powder discharging groove movement mechanism;
the powder discharging mechanism comprises a powder discharging mechanism body, a plurality of powder boxes, a plurality of parallel powder discharging groove moving mechanisms, a powder discharging mechanism and a powder discharging mechanism, wherein the plurality of powder boxes are arranged on the outer side of the top of the powder discharging mechanism body, the plurality of parallel powder discharging groove moving mechanisms are arranged on the inner side of the top of the powder discharging mechanism body, the powder boxes are in one-to-one correspondence with the parallel powder discharging groove moving mechanisms, and through holes are formed between the powder boxes and the parallel powder discharging groove moving mechanisms;
the vibrating box is arranged in the powder falling mechanism box body 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 vibrating box, and a sliding cover plate is arranged between the powder outlet groove and the vibrating 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 powder discharging mechanism body, 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 of the powder box wall plate, which is opposite to the powder falling mechanism box body;
the powder box wall plate is arranged as a lower opening towards one side of the drawing plate;
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 opposite to the drawing plate;
powder is placed between the piston plate and the pull plate.
Preferably, the parallel powder feeding groove moving mechanism comprises: the device comprises a second electromagnetic valve, a third electromagnetic valve, a second powder discharging groove, a second sealing top plate, a first sealing top plate, a horizontal movement device and a 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 the 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, facing away from the inner wall of the top of the powder falling mechanism box, of the first sealing top plate, and a second powder discharging groove is formed in one side, facing away from the inner wall of the top of the powder falling mechanism box, of the second sealing top plate;
the second electromagnetic valve is arranged on one side of the first powder discharging groove, which is away from the first sealing top plate, and the third electromagnetic valve is arranged on one side of the second powder discharging groove, which is away from the second sealing top plate;
openings are formed in the first sealing top plate and the second sealing top plate.
Preferably, the first powder discharging groove is connected with the powder circulation module through a first powder discharging 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 passes through the powder falling mechanism box body through the powder falling pipe connecting block;
the powder circulation module is connected with the powder box, and a fourth electromagnetic valve is arranged between the powder circulation module and the powder box;
and an air extracting device, a filtering device and an exhaust device are arranged in the powder circulation module.
Preferably, the powder discharge nozzle assembly includes: a front powder outlet slot, a vibrator and a front powder outlet slot;
the front powder outlet groove is communicated with the powder outlet groove, and one end of the front powder outlet groove, which is opposite to the powder outlet groove, extends outwards to form a front powder outlet thin opening;
the front-end powder outlet thin opening is arranged as a rectangular outlet;
and the side surface of the joint of the front powder outlet groove and the front powder outlet thin opening is provided with a vibrator in a surrounding way.
Preferably, a plurality of powder quantity monitoring feedback modules are arranged outside the powder falling mechanism box body;
and each powder box side is provided with one powder amount monitoring feedback module.
Preferably, the powder box is connected with the powder falling mechanism box body, and O-shaped sealing rings are arranged on the periphery side of the opening of the first sealing top plate and the periphery side of the opening of the second sealing top plate.
Preferably, the piston plate allows rotation about the powder bin cross-sectional axis;
the molding area is provided with a plurality of square areas.
Preferably, a working method of the powder component controllable powder spreading integrated device according to the claim comprises the following steps:
step S1, the central controller controls to close the drawing plates of the powder boxes, then controls the piston plates in all the powder boxes to rotate, and respectively puts different kinds of powder into the powder boxes, wherein the surface of the powder in the powder boxes is uneven;
the central controller controls the horizontal movement device to move, a plurality of first powder discharging grooves are respectively aligned to the lower opening of the powder box, meanwhile, the second electromagnetic valves are kept in a closed state, then the central controller partially opens all the drawing plates until gas in the powder box can be discharged when the piston plates move downwards, simultaneously, all the piston plates are rotated to the horizontal position again and all push rods are controlled to move downwards, powder flows out of the powder box and respectively enters the first powder discharging grooves during the movement of the push rods until no gap exists between the upper surface of the powder and the piston plates, and then all the drawing plates are closed;
step S2, the central controller opens all second electromagnetic valves, simultaneously closes all fourth electromagnetic valves, opens all air exhaust devices of the powder circulation module, pumps powder in a first powder discharging groove into a filtering device of the powder circulation module, then closes all second electromagnetic valves, lifts the piston plate and rotates again, simultaneously opens all fourth electromagnetic valves, opens an air exhaust device of the powder circulation module, and enables the powder to enter a powder box respectively, then rotates all the piston plates to a horizontal position again, pushes the piston plate until the lower surface of the piston plate is attached to the upper surface of the powder, and the central controller controls all horizontal movement devices to move until all the second powder discharging grooves are aligned with the lower openings of the powder box respectively;
step S3, all the third electromagnetic valves are kept in a closed state, the drawing plate is opened, at the moment, the powder quantity monitoring feedback module starts to work, and the height of powder in each powder box is recorded 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 forming area and the preset component proportion, then calculating the corresponding descending height of the powder according to the density of each powder, and closing the drawing plate of the corresponding powder box after the calculated descending height is respectively reduced by the height of the upper surface of the powder in each powder box;
s5, the central controller opens all third electromagnetic valves, simultaneously closes the sliding cover plate, slides the powder in all second powder discharging grooves into the vibration box, then opens the vibration box, and uniformly mixes all the powder;
s6, enabling the first electromagnetic valve to be in a closed state, opening a sliding cover plate, enabling mixed powder to reach the position below the powder outlet groove, closing the sliding cover plate, and opening the vibrator by a central controller;
opening the first electromagnetic valve, starting the whole intelligent powder falling mechanism component to move according to a set track, continuously falling mixed powder from the front powder outlet fine opening in the moving process, and preparing a mixed powder layer of an area after the movement of the area is completed;
in the moving process of the intelligent powder falling mechanism component in the area, repeating the steps S4 to S6 to perform the mass and the proportion of components of mixed powder in the next area, wherein when the powder spreading in the current area is completed, the mixed powder in the next area is ready to be completed in the vibration box;
step S7, the intelligent powder falling mechanism component continues to move to finish powder paving operation of the next area on the movement track until powder paving operation of the whole forming area is finished, so that a layer of powder with the complete forming area is prepared, and then the central controller controls the light path system to start working;
and 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 cross section of the powder box is arranged in a circular shape.
Preferably, the front powder outlet fine opening is arranged as a rectangular outlet, the short side size of the rectangular outlet is 3-5 times of the average particle size of the powder, and the long side size of the rectangular outlet is equal to the side length of the square area of the forming area.
Preferably, the openings of the first sealing top plate and the second sealing top plate are both circular and have the same size.
Compared with the prior art, the application has the following beneficial effects:
the application solves the problem that the existing powder paving process in the additive manufacturing process can only form one layer of powder bed of the same material, realizes the function of controlling the material composition of each region of the powder bed, and lays a foundation for related process researches such as gradient materials and the like.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the detailed description of non-limiting embodiments, given with reference to the accompanying drawings in which:
FIG. 1 is a top view of a powder component controlled powder paving integrated apparatus;
FIG. 2 is a schematic diagram of the components of the intelligent powder dropping mechanism;
FIG. 3 is a schematic view of the structure of a powder discharge nozzle assembly;
FIG. 4 is a schematic diagram of a parallel runner motion mechanism.
The figure shows:
Detailed Description
The present application will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the present application, but are not intended to limit the application in any way. It should be noted that variations and modifications could be made by those skilled in the art without departing from the inventive concept. These are all within the scope of the present application.
Example 1
As shown in fig. 1, the present embodiment includes: the intelligent powder falling mechanism comprises a linear motion module 1, a sliding connecting block 3, a guide rod 4, an intelligent powder falling mechanism assembly 5 and a central controller; the sliding connection block 3 is mounted on the linear motion module 1 and allows movement in the direction in which the linear motion module 1 extends; the guide rod 4 is mounted 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 assembly 5 is mounted on the guide rod 4 and allows the guide rod 4 to move along the extending direction, the intelligent powder falling mechanism assembly 5 allows the sliding connection block 3 to move relative to the linear motion module 1, the intelligent powder falling mechanism assembly 5 is mounted with the powder outlet nozzle assembly 511, and the powder outlet nozzle assembly 511 allows the guide rod 4 to move along the extending direction of the linear motion module 1 and covers the forming area 2; the intelligent powder falling mechanism component 5 and the linear motion module 1 are connected with a central controller.
As shown in fig. 2, the intelligent powder dropping mechanism assembly 5 further includes: the powder box, the powder falling mechanism box body 507, the second powder discharging pipe 508, the vibrating box 509, the sliding cover plate 510, the first electromagnetic valve 512, the powder outlet groove 513 and the parallel powder discharging 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 feeding groove moving mechanisms 515 are arranged on the inner side of the top of the powder falling mechanism box body 507, the powder boxes are in one-to-one correspondence with the parallel powder feeding groove moving mechanisms 515, and through holes are arranged between the corresponding powder boxes and the parallel powder feeding groove moving mechanisms 515; a vibrating box 509 is arranged in the powder falling mechanism box body 507, the vibrating box 509 is connected with a parallel powder falling groove moving 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 outer side of the bottom of the powder falling mechanism box body 507 is provided with a powder outlet nozzle assembly 511, the powder outlet nozzle assembly 511 is communicated with a 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 box comprises: pushrod 501, overcap 502, piston plate 503, powder bin wall plate 504, and drawer plate 506; the powder box wall plate 504 is arranged on the 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. The powder box wall plate 504 is provided with a lower opening towards one side of the drawing plate 506, a piston plate 503 is arranged in the powder box wall plate 504, a push rod 501 is arranged on one side of the piston plate 503 opposite to the drawing plate 506, and powder 505 is placed between the piston plate 503 and the drawing plate 506. The outside of the powder falling mechanism box body 507 is provided with a plurality of powder monitoring feedback modules 516, and the side of each powder box is provided with a powder monitoring feedback module 516. The molding area 2 is arranged with a plurality of square areas.
As shown in fig. 3, the powder discharge head assembly 511 includes: front-end powder discharge slot 5111, vibrator 5112 and front-end powder discharge slot 5113; the front powder outlet groove 5113 is communicated with the powder outlet groove 513, a front powder outlet thin opening 5111 is outwards extended from one end of the front powder outlet groove 5113 back to the powder outlet groove 513, the front powder outlet thin opening 5111 is arranged as a rectangular outlet, and a vibrator 5112 is arranged around the side face of the joint of the front powder outlet groove 5113 and the front powder outlet thin opening 5111.
As shown in fig. 4, the parallel lower powder tank 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 movement device 5156 and a first powder discharging groove 5157; the horizontal movement device 5156, the first sealed top plate 5155 and the second sealed top plate 5154 are arranged on the inner side of the top of the powder falling mechanism box 507, the horizontal movement device 5156 is connected with and drives the first sealed top plate 5155 and the second sealed top plate 5154 to move, the powder box drives the first sealed top plate 5155 and the second sealed top plate 5154 to move through the horizontal movement device 5156 so as to realize the butt joint of the first sealed top plate 5155 or the second sealed top plate 5154 and the powder box, a first powder discharging groove 5157 is arranged on one side of the first sealed top plate 5155, which is opposite to the inner wall of the top of the powder falling mechanism box 507, a second powder discharging groove 5153 is arranged on one side of the second sealed top plate 5154, which is opposite to the first sealed top plate 5155, a second electromagnetic valve 5151 is arranged on one side of the second sealed top plate 5153, a third electromagnetic valve 5152 is arranged on one side of the second sealed top plate 5154, and openings are arranged on the first sealed top plate 5155 and the second sealed top plate 5154. The first powder discharging groove 5157 is connected with the powder circulation module 517 through a first powder discharging pipe 519, a powder discharging pipe connecting block 514 is arranged on the side wall of the powder discharging mechanism box 507, the first powder discharging pipe 519 penetrates through the powder discharging mechanism box 507 through the powder discharging pipe connecting block 514, the powder circulation module 517 is connected with the powder box, a fourth electromagnetic valve 518 is arranged between the powder circulation module 517 and the powder box, and an air extracting device, a filtering device and an air exhausting device are arranged in the powder circulation module 517. An O-shaped sealing ring is arranged at the position of the powder box connecting powder falling mechanism box body 507 and at the opening peripheral side of the first sealing top plate 5155 and the opening peripheral side of the second sealing top plate 5154. The piston plate 503 allows rotation about the powder tank cross-sectional axis.
The working method of the powder component controllable powder spreading integrated device comprises the following steps: step S1, a central controller controls to close the drawing plates 506 of a plurality of powder boxes, then controls the piston plates 503 in all the powder boxes to rotate, and respectively puts different kinds of powder 505 into the plurality of powder boxes, wherein the surfaces of the powder 505 in the powder boxes are uneven; the central controller controls the horizontal movement device 5156 to move, the plurality of first powder falling grooves 5157 are respectively aligned with the lower openings of the powder boxes, meanwhile, the second electromagnetic valves 5151 are kept in a closed state, then the central controller partially opens all the drawing plates 506 until gas in the powder boxes can be discharged 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 falling 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 drawing plates 506 are closed; step S2, the central controller opens all the second electromagnetic valves 5151, simultaneously closes all the fourth electromagnetic valves 518, opens the air exhaust devices of all the powder circulation modules 517, pumps the powder 505 in the first powder discharging grooves 5157 into the filtering devices of the powder circulation modules 517, then closes all the second electromagnetic valves 5151, lifts the piston plates 503 and rotates again, simultaneously opens all the fourth electromagnetic valves 518, opens the air exhaust devices of the powder circulation modules 517, and the powder 505 enters the powder boxes respectively, then rotates all the piston plates 503 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, and the central controller controls all the horizontal movement devices 5156 to move to all the second powder discharging grooves 5153 to align with the lower openings of the powder boxes respectively; step S3, all the third electromagnetic valves 5152 are kept in a closed state, the drawing plate 506 is opened, at the moment, the powder quantity monitoring feedback module 516 starts to work, and the height of the powder 505 in each powder box is recorded 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 the preset component proportion, then calculating the descending height of the corresponding powder 505 according to the density of each powder 505, and closing the drawing plate 506 of the corresponding powder box after the calculated descending height is respectively reduced by the height of the upper surface of the powder 505 in each powder box; step S5, the central controller opens all third electromagnetic valves 5152, simultaneously closes the sliding cover plate 510, slides the powder 505 positioned in all second powder discharging grooves 5153 into the vibrating box 509, then opens the vibrating box 509, and all the powder 505 is uniformly mixed; step S6, the first electromagnetic valve 512 is in a closed state, the 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 the central controller opens the vibrator 5112; the first electromagnetic valve 512 is opened, the whole intelligent powder falling mechanism assembly 5 starts to move according to a set track, during the moving process, the mixed powder 505 continuously falls from the front powder outlet fine port 5111, and after the moving of an area is completed, the mixed powder layer of the area is prepared to be completed; in the moving process of the area, the intelligent powder falling mechanism component 5 simultaneously repeats the steps S4 to S6 to carry out the mass and the proportion of components of the mixed powder in the next area, and when the powder spreading of the current area is completed, the mixed powder in the next area is ready to be completed in the vibrating box 509; step S7, the intelligent powder falling mechanism component 5 continues to move, powder laying operation of the next area on the movement track is completed until powder laying operation of the whole forming area 2 is completed, so that a layer of complete powder of the forming area 2 is ready to be completed, and then a central controller controls a light path system to start working; and 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 falling mechanism comprises a linear motion module 1, a sliding connecting block 3, a guide rod 4, an intelligent powder falling 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 realize horizontal left-right motion, and meanwhile, the intelligent powder falling mechanism component 5 can also realize horizontal back-and-forth motion along the guide rod 4, and the powder outlet nozzle 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 assembly 5 can realize that a plurality of kinds of powder 505 are uniformly mixed according to the accurate component proportion, then uniformly spread the uniformly mixed powder on a specific micro area of the forming area 2, in the process of spreading the powder on the last micro area, the intelligent powder falling mechanism assembly 5 can perform the powder mixing process of the next micro area in the motion track, so that after the intelligent powder falling mechanism assembly 5 moves along the preset motion track, each micro area of the forming area 2 can finish powder spreading according to the preset powder component proportion, after the whole forming area 2 finishes powder spreading, the optical path system starts to work until the single-layer powder scanning of the forming area 2 is finished, the whole workpiece forming process is repeated continuously until the whole workpiece forming process 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 assembly 5 mainly comprises 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 507, a second powder dropping pipe 508, a vibrating box 509, a sliding cover plate 510, a powder outlet nozzle assembly 511, a first electromagnetic valve 512, a powder outlet tank 513, a powder dropping pipe connecting block 514, a parallel powder outlet tank moving mechanism 515, a powder quantity monitoring feedback module 516, a powder circulation module 517 and a fourth electromagnetic valve 518, wherein the cross section of the four powder boxes capable of loading four kinds of powder 505 is circular, and O-shaped rings are respectively arranged at the bottoms of the four powder boxes and can be sealed with the top surface of the powder dropping mechanism box 507.
As shown in fig. 3, the powder discharge nozzle assembly 511 is composed of a front powder discharge slot 5111, a vibrator 5112 and a front powder discharge slot 5113, wherein the front powder discharge slot 5111 is a rectangular outlet, the size of the short side of the rectangle is 3-5 times the average particle size of four kinds of powder 505, so that the front powder discharge slot 5111 is small and uniformly discharged, the size of the long side of the rectangle is equal to the side length of the tiny square area of the forming area 2, the front powder discharge slot 5113 can store a small amount of powder to be dropped from the front powder discharge slot 5111, the vibrator 5112 surrounds the bottom of the front powder discharge slot 5113, and the vibrator 5112 is opened to enable the powder to smoothly slide down, so that the powder blocking phenomenon is avoided.
As shown in fig. 4, the parallel lower powder tank moving mechanism 515 includes: the second electromagnetic valve 5151, the third electromagnetic valve 5152, the first powder discharging groove 5157, the second powder discharging groove 5153, the first sealing top plate 5155, the second sealing top plate 5154 and the horizontal movement device 5156, the first powder discharging groove 5157 and the second powder discharging groove 5153 can store the powder 505 falling from the corresponding powder box, the openings of the first sealing top plate 5155 and the second sealing top plate 5154 are all round and have the same size, meanwhile, the circumferential rings of the openings of the first sealing top plate 5155 and the second sealing top plate 5154 are O-shaped rings, the sealing can be realized with the lower surface of the top plate of the powder discharging mechanism box 507, and the horizontal movement 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 tanks are respectively provided with a second powder discharging pipe 508 connected with the vibration tank 509, when the sliding cover plate 510 is closed, the third electromagnetic valves 5152 of the four parallel powder discharging groove moving mechanisms 515 are opened, the powder 505 from the four second powder discharging grooves 5153 enters the vibration tank 509, and after the vibration tank 509 is opened, four different kinds of powder from the four second powder discharging grooves 5153 are fully mixed.
The powder circulation module 517 is equipped with filter equipment, air exhaust device and exhaust apparatus inside, after air exhaust device opens, open second solenoid valve 5151, close fourth solenoid valve 518, the powder in the first powder tank 5157 is taken out to the inside filter equipment of powder circulation module 517, then close second solenoid valve 5151, open fourth solenoid valve 518, exhaust apparatus opens, the powder passes top cap 502 above the powder case after leaving from filter equipment and reenters into the powder case, the piston plate 503 of push rod 501 below can rotate along the axle perpendicular with the powder case longitudinal section, so the powder 505 reenter into the powder case can stay in the below of piston plate 503. The four powder amount monitoring feedback modules 516 are respectively arranged at the left sides of the four powder boxes, and can accurately monitor 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 in real time.
The working method of the embodiment comprises the following steps:
step T1, the central controller sends out an instruction to close the drawing plates 506 at the bottoms 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 kinds of powder into the four powder boxes, at the moment, 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-feeding groove moving mechanisms 515 to move, the four first powder-feeding grooves 5157 are aligned with the lower openings of the four powder boxes, meanwhile, the four second electromagnetic valves 5151 are kept in a closed state, then the central controller slightly opens the drawing plates 506 of the four powder boxes, simultaneously, rotates the piston plates 503 in the four powder boxes to the horizontal position again, then controls the four push rods 501 to move downwards, a small amount of powder flows out of the four powder boxes into the four first powder-feeding grooves 5157 until no gap exists between the upper surfaces of the powder and the piston plates 503, and then closes the four drawing plates 506;
step T2, the central controller opens the four second electromagnetic valves 5151, closes the four fourth electromagnetic valves 518, opens the air extracting devices of the four powder circulation modules 517, pumps a small amount of powder in the four first powder discharging grooves 5157 into the filtering devices of the four powder circulation modules respectively, can filter out some impurities on the inner pipe wall, then closes the four second electromagnetic valves 5151, lifts the piston plates 503 in the four powder tanks and rotates 70-80 degrees again, simultaneously opens the four fourth electromagnetic valves 518, opens the air exhausting devices of the four powder circulation modules 517, the powder in the four filtering devices enters the four powder tanks, then rotates the piston plates 503 in the four powder tanks 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, and controls the horizontal movement devices 5156 of the four parallel powder discharging groove movement mechanisms 515 to move leftwards until the four second powder discharging grooves 5153 are completely aligned with the lower openings of the four powder tanks;
step T3, then, the four third electromagnetic valves 5152 are kept in a closed state, and the four drawing plates 506 are opened to the same extent, at this time, 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 kinds of powder 505 required by each micro square area according to the mass of the powder required by each micro square area of the forming area 2 and the preset component proportion, calculating the descending heights delta h1, delta h2, delta h3 and delta h4 of the corresponding powder 505 according to the densities of the four kinds of powder 505, and closing the corresponding drawing plate 506 after the heights of the upper surfaces of the powder in each powder box are respectively reduced by delta h1, delta h2, delta h3 and delta h 4;
in step T5, the central controller opens the four third electromagnetic valves 5152, simultaneously closes the sliding cover plate 510, slides the four powders 505 positioned in the four second powder discharging grooves 5153 into the vibration box 509, and then opens the vibration box 509, and the four powders are mixed with the ground;
step T6, the first electromagnetic valve 512 is in a closed state, the sliding cover plate 510 is opened, mixed powder reaches the bottom of the lower tubular region of the powder outlet groove 513, then the sliding cover plate 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, the whole intelligent powder falling mechanism assembly 5 starts to move according to a preset movement track, in the moving process, mixed powder continuously falls from the front powder outlet fine opening 5111 of the powder outlet nozzle assembly 511, after the movement of one micro region is completed, the mixed powder layer of the micro region is prepared, in the moving process of the intelligent powder falling mechanism assembly 5, the steps T4 to T6 are repeated according to the mass and the component proportion of the mixed powder in the next micro region on the movement track, and when the powder spreading of the current micro region is completed, the mixed powder in the next micro region on the movement track is prepared in the vibration box 509;
step T7, the intelligent powder falling mechanism component 5 continues to move, and powder paving operation of the next micro area on the motion track is completed;
step T8, repeating the above operation until the powder laying work of all the micro areas of the whole forming area 2 is completed, so that a layer of complete powder of the forming area 2 is prepared, and then the central controller controls the light path system to start working;
and step T9, repeating the steps until the whole workpiece is formed according to the single-layer powder supply, powder spreading and scanning methods, wherein the formed workpiece realizes the preset of the process material components of each area.
Those skilled in the art will appreciate that the application provides a system and its individual devices, modules, units, etc. that can be implemented entirely by logic programming of method steps, in addition to being implemented as pure computer readable program code, in the form of logic gates, switches, application specific integrated circuits, programmable logic controllers, embedded microcontrollers, etc. Therefore, the system and various devices, modules and units thereof provided by the application can be regarded as a hardware component, and the devices, modules and units for realizing various functions included in the system can also be regarded as structures in the hardware component; means, modules, and units for implementing the various functions may also be considered as either software modules for implementing the methods or structures within hardware components.
In the description of the present application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.
The foregoing describes specific embodiments of the present application. It is to be understood that the application is not limited to the particular embodiments described above, and that various changes or modifications may be made by those skilled in the art within the scope of the appended claims without affecting the spirit of the application. The embodiments of the application and the features of the embodiments may be combined with each other arbitrarily without conflict.

Claims (6)

1. A powder component controllable powder spreading integrated device, comprising: the intelligent powder falling mechanism comprises a linear motion module (1), a sliding connecting block (3), a guide rod (4), an intelligent powder falling mechanism component (5) and a central controller;
the sliding connecting block (3) is arranged on the linear motion module (1) and allows the sliding connecting block to move along the extending direction of the linear motion module (1);
the guide rod (4) is arranged on the sliding connecting block (3) and moves relative to the linear motion module (1) through the sliding connecting 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 component (5) is arranged on the guide rod (4) and is allowed to move along the extending direction of the guide rod (4), and the intelligent powder falling mechanism component (5) is allowed to move relative to the linear motion module (1) through the sliding connecting block (3);
the intelligent powder falling mechanism assembly (5) is provided with a powder outlet nozzle assembly (511), and the powder outlet nozzle assembly (511) allows the powder outlet nozzle assembly to move along the extending direction of the linear motion module (1) and the guide rod (4) and cover the forming area (2);
the intelligent powder falling mechanism component (5) and the linear motion module (1) are connected with the central controller;
the intelligent powder falling mechanism component (5) further comprises: the device comprises a powder box, a powder falling mechanism box body (507), a second powder discharging tube (508), a vibrating box (509), a sliding cover plate (510), a first electromagnetic valve (512), a powder discharging groove (513) and a parallel powder discharging 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 are in one-to-one correspondence with the parallel powder discharging groove moving mechanisms (515), and through holes are arranged between the powder boxes and the parallel powder discharging groove moving mechanisms (515) correspondingly;
the vibrating box (509) is arranged in the powder falling mechanism box body (507), and the vibrating box (509) is connected with the parallel powder discharging groove moving mechanism (515) through a second powder discharging pipe (508);
a powder outlet groove (513) is formed in the bottom of the vibration box (509), and a sliding cover plate (510) is arranged between the powder outlet groove (513) and the vibration box (509);
a powder outlet nozzle assembly (511) is arranged at the outer side of the bottom of the powder falling mechanism box body (507), the powder outlet nozzle assembly (511) is communicated with a 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 box includes: 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 the 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, opposite to the powder falling mechanism box body (507), of the powder box wall plate (504);
the powder box wall plate (504) is arranged as a lower opening towards one side of the drawing plate (506);
a piston plate (503) is arranged in the powder box wall plate (504), and a push rod (501) is arranged on one side of the piston plate (503) opposite to the drawing plate (506);
-placing a powder (505) between the piston plate (503) and the drawer plate (506);
the parallel powder feeding groove movement mechanism (515) comprises: a second electromagnetic valve (5151), a third electromagnetic valve (5152), a second powder discharging groove (5153), a second sealing top plate (5154), a first sealing top plate (5155), a horizontal movement device (5156) and a first powder discharging 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 as to realize the butt joint of the first sealing top plate (5155) or the second sealing top plate (5154) and the powder box;
a first powder discharging groove (5157) is formed in one side, facing away from the inner wall of the top of the powder discharging mechanism box (507), of the first sealing top plate (5155), and a second powder discharging groove (5153) is formed in one side, facing away from the inner wall of the top of the powder discharging mechanism box (507), of the second sealing top plate (5154);
the second electromagnetic valve (5151) is arranged on one side, facing away from the first sealing top plate (5155), of the first powder discharging groove (5157), and the third electromagnetic valve (5152) is arranged on one side, facing away from the second sealing top plate (5154), of the second powder discharging groove (5153);
openings are formed in the first sealing top plate (5155) and the second sealing top plate (5154);
the first powder discharging groove (5157) is connected with the powder circulation module (517) through a first powder discharging pipe (519);
a powder discharging pipe connecting block (514) is arranged on the side wall of the powder discharging mechanism box body (507), and the first powder discharging pipe (519) passes through the powder discharging mechanism box body (507) through the powder discharging pipe connecting block (514);
the powder circulation module (517) is connected with a corresponding powder box, and a fourth electromagnetic valve (518) is arranged between the powder circulation module (517) and the powder box;
an air extracting device, a filtering device and an exhaust device are arranged in the powder circulation module (517).
2. The powder component controlled powder spreading integrated apparatus as claimed in claim 1, wherein the powder discharge head assembly (511) comprises: a front-end powder outlet slot (5111), a vibrator (5112) and a front-end powder outlet slot (5113);
the front powder outlet groove (5113) is communicated with the powder outlet groove (513), and one end of the front powder outlet groove (5113) back to the powder outlet groove (513) extends outwards to form a front powder outlet thin opening (5111);
the front end powder outlet thin opening (5111) is arranged as a rectangular outlet;
and a vibrator (5112) is arranged around the side surface of the joint of the front powder outlet groove (5113) and the front powder outlet thin opening (5111).
3. The powder component controllable powder spreading integrated apparatus according to claim 2, wherein: a plurality of powder quantity monitoring feedback modules (516) are arranged on the outer side of the powder falling mechanism box body (507);
one of the powder amount monitoring feedback modules (516) is mounted to each of the powder bin sides.
4. The powder component controlled powder spreading integrated apparatus of claim 1, wherein: the powder box is connected with the powder falling mechanism box body (507), the opening periphery side of the first sealing top plate (5155) and the opening periphery side of the second sealing top plate (5154) are provided with O-shaped sealing rings.
5. A powder component controlled powder spreading integrated apparatus according to claim 3, wherein: -said piston plate (503) allowing rotation about said powder bin cross-sectional axis;
the forming area (2) is provided with a plurality of square areas.
6. A method of operating the powder component controlled spread integrated apparatus of claim 5, comprising the steps of:
step S1, the central controller controls to close the drawing plates (506) of a plurality of powder boxes, then controls the piston plates (503) in all the powder boxes to rotate, and respectively puts different kinds of powder (505) into the powder boxes, 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 discharging grooves (5157) are respectively aligned to the lower openings of the powder boxes, meanwhile, the second electromagnetic valves (5151) are kept in a closed state, then the central controller partially opens all the drawing plates (506) until gas in the powder boxes can be discharged when the piston plates (503) move downwards, simultaneously, all the piston plates (503) are rotated to the horizontal position again, all pushing rods (501) are controlled to move downwards, powder (505) flows out of the powder boxes and respectively enters the first powder discharging grooves (5157) along with the movement of the pushing rods (501) until no gap exists between the upper surfaces of the powder (505) and the piston plates (503), and then all the drawing plates (506) are closed;
step S2, the central controller opens all second electromagnetic valves (5151) and simultaneously closes all fourth electromagnetic valves (518), all air suction devices of the powder circulation module (517) are opened, powder (505) in a first powder discharging groove (5157) is sucked into a filtering device of the powder circulation module (517), then all second electromagnetic valves (5151) are closed, the piston plates (503) are lifted and rotated again, simultaneously all fourth electromagnetic valves (518) are opened, an air exhaust device of the powder circulation module (517) is opened, the powder (505) enters a powder box respectively, then all piston plates (503) are rotated to a horizontal position again, then the piston plates (503) are pushed 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 horizontal movement devices (5156) to move to all second powder discharging grooves (5153) to be aligned with the lower openings of the powder box respectively;
step S3, all the third electromagnetic valves (5152) are kept in a closed state, the drawing plate (506) is opened, at the moment, the powder quantity monitoring feedback module (516) starts to work, and the heights of the powder (505) in each powder box are recorded 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 forming area (2) and the preset component proportion, then calculating the descending height of the corresponding 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 reduced by the calculated descending height;
step S5, the central controller opens all third electromagnetic valves (5152), simultaneously closes the sliding cover plate (510), slides the powder (505) positioned in all second powder discharging grooves (5153) into the vibrating box (509), then opens the vibrating box (509), and all the powder (505) are uniformly mixed;
step S6, the first electromagnetic valve (512) is in a closed state, the sliding cover plate (510) is opened, mixed powder (505) reaches the bottom of the lower tubular region of the powder outlet groove (513), then the sliding cover plate (510) is closed, and the vibrator (5112) is opened by the central controller;
opening the first electromagnetic valve (512), starting the whole intelligent powder falling mechanism assembly (5) to move according to a set track, continuously falling mixed powder (505) from the front powder outlet fine port (5111) in the moving process, and preparing a mixed powder layer of an area after the movement of the area is completed;
in the moving process of the area, the intelligent powder falling mechanism component (5) simultaneously repeats the steps S4 to S6 to carry out the mass and the proportion of components of the mixed powder in the next area, and when the powder spreading of the current area is completed, the mixed powder in the next area is ready to be completed in the vibration box (509);
step S7, the intelligent powder falling mechanism component (5) continues to move to finish powder paving operation of the next area on the movement track until powder paving operation of the whole forming area (2) is finished, so that a layer of complete powder of the forming area (2) is ready to be finished, and then the central controller controls the light path system to start working;
and 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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