CN108859107A - Powder filter type laser in-situ molding machine - Google Patents
Powder filter type laser in-situ molding machine Download PDFInfo
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- CN108859107A CN108859107A CN201810625716.9A CN201810625716A CN108859107A CN 108859107 A CN108859107 A CN 108859107A CN 201810625716 A CN201810625716 A CN 201810625716A CN 108859107 A CN108859107 A CN 108859107A
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- powder
- filter type
- type laser
- molding machine
- activated bar
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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
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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
- B29C64/30—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
- B29C64/357—Recycling
-
- 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
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- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Processing Of Solid Wastes (AREA)
- Road Paving Machines (AREA)
Abstract
The invention discloses a kind of powder filter type laser in-situ molding machines, the Optical Maser System of laying device, selective melting metal powder including rack, for being laid with metal powder, the driving mechanism for controlling laying device；The laying device includes the stone box that bottom is provided with strip blanking port, the intermediate filtered web plate for stone box inner cavity to be separated into epicoele and cavity of resorption is provided in the stone box, it is described intracavitary to be provided with rabbling mechanism, the rabbling mechanism includes the powder activated bar that helical blade is provided with along the outer circle of powdering box length direction arrangement, powder filter type laser in-situ molding machine of the invention, guarantee processing quality, it avoids being mixed into for magazine and processing is caused to fail, especially when having clout recycling.
Description
Technical field
The present invention relates to laser printing fields, and in particular to a kind of powder filter type laser in-situ molding machine.
Background technique
Rapid shaping technique is a kind of novel manufacturing technology to grow up the 1980s, which is by part
Threedimensional model slicing treatment successively accumulates, is finally superimposed as the process of Three-dimensional Entity Components.Rapid shaping technique breaches routine
Deformation molding and remove molding thinking, realize the theory of " net forming ".Rapid shaping mainly has 3 classes：Selective laser
Sintering technology SLS), laser melting coating manufacturing technology (LENS), selective laser melting technology (SLM).Wherein selective laser is molten
The part consistency of change technology preparation is high, precision is high, performance is good, process stability is good, by domestic and international concern.Currently,
SLM technical research is concentrated mainly on Europe, such as Germany, Belgium, country of Britain.These country SLM device research on
Through entering commercialization stage.Asia is concentrated mainly on Singapore, Japan and other countries；In the prior art, usually control platform
Lifting realizes that bisque layering successively declines, and realization top is next machined layer；And the area of platform is that centainly, area is corresponding
For the floor space of machining area, and it is directed to various sizes of work piece, the constancy of volume of machining area, so that small processing
It when dimension workpiece, still needs to fill up in the equal powder in the space of machining area, so that processing raw material pollution wastes, at raw material recycling
Manage it is cumbersome, meanwhile, when to extreme large and heavy workpiece, which can not achieve processing in situ, that is, being carried to after needing to process makes
With place, processing efficiency is low, and limitation is big, and the scope of application is limited.
Therefore, in order to solve the above problem, a kind of selective laser melting system is needed, can be realized processing and manufacturing in situ,
Effectively filtering powder impurity, guarantees powdering quality, and filter effect is good.
Summary of the invention
In view of this, the purpose of the present invention is overcoming defect in the prior art, provide powder filter type laser in-situ at
Type device can effectively filter powder impurity, guarantee powdering quality, and filter effect is good.
Powder filter type laser in-situ molding machine of the invention, the stone including rack, for being laid with metal powder fill
It sets, the Optical Maser System of selective melting metal powder, the driving for moving up and down and moving horizontally for controlling laying device
Mechanism；The laying device includes the stone box that bottom is provided with strip blanking port, is provided in the stone box for inciting somebody to action
Stone box inner cavity is separated into the intermediate filtered web plate of epicoele and cavity of resorption, described intracavitary to be provided with rabbling mechanism, the blender
Structure includes the powder activated bar that helical blade is provided with along the outer circle of powdering box length direction arrangement, and the powder activated bar includes
The left powder activated bar and right powder activated bar being set side by side along powdering box width direction, positioned at the helical-blade of left powder activated bar
Piece is oppositely oriented with the helical blade positioned at right powder activated bar, further includes for driving left powder activated bar and right powder to drive
The output shaft of the servo motor of lever, the servo motor is driven by transmission chain and left powder activated bar and right powder activated bar
Cooperation；Upper intracavitary powder is by entering cavity of resorption after filtering after stirring by intermediate filtered web plate and further falling to strip
Blanking port.
Further, the intermediate filtered web plate is two pieces, and two screen packs are vertically side by side and with dismountable
Mode installation settings.
Further, the horizontal slot for the detachable installation of intermediate filtered web plate is provided in the stone box, it is described
Intermediate filtered web plate is installed on stone box by horizontal slot grafting.
It further, further include that clout for trickling down laying device is recycled to surplus material recovery device in laying device.
Further, the surplus material recovery device includes fixed jacket in the annular suction tube and pump orifice of work piece bottom
With the suction pump that be connected to of annular suction tube cavity, the outlet of the suction pump match with usual pipeline with laying device merge be used for by
Clout is delivered to laying device and reuses.
Further, the annular suction tube side wall is provided with suction hole.
The beneficial effects of the invention are as follows：A kind of powder filter type laser in-situ molding machine disclosed by the invention, by
It is provided with the intermediate filtered web plate for stone box inner cavity to be separated into epicoele and cavity of resorption in stone box, it is upper intracavitary to be provided with stirring
Mechanism greatly improves the cleanliness of powder in the process for having clout to recycle, and guarantees that processing quality is high.
Detailed description of the invention
The invention will be further described with reference to the accompanying drawings and examples：
Fig. 1 is the driving structure schematic diagram of middle berth powder box of the present invention；
Fig. 2 is the top view of the driving structure of middle berth powder box of the present invention；
Fig. 3 is the side view of wedge block in the present invention；
Fig. 4 is middle berth powder box of the present invention and horizontal guide rail attachment structure schematic diagram；
Fig. 5 is the driving structure schematic diagram of the powdering box in the present invention with electromagnetic location；
Fig. 6 is the driving structure schematic diagram of electromagnetic drive block in the present invention；
Fig. 7 is the driving structure schematic diagram of the powdering box in the present invention with hydraulic positioning；
Fig. 8 is the structural schematic diagram of middle berth powder box of the present invention；
Fig. 9 is the structural schematic diagram of rabbling mechanism in the present invention；
Figure 10 is the side view of recyclable device in the present invention；
Figure 11 is the top view of recyclable device in the present invention；
Figure 12 is work pieces process schematic diagram in the present invention.
Specific embodiment
As shown, the powder filter type laser in-situ molding machine in the present embodiment, including rack (not shown), it is used for
It is laid with the power spreading device 1 of metal powder, the Optical Maser System of selective melting metal powder and for controlling laying device or more
Driving mechanism that is mobile and moving horizontally, driving mechanism includes being used to support the horizontal guide rail of power spreading device 1 and for driving
The vertical driving mechanism of 2 vertical motion of horizontal guide rail, is provided on the power spreading device 1 and the cooperation driving powdering of horizontal guide rail 2
The horizontal drive mechanism of 1 horizontal reciprocating movement of device, the Optical Maser System and horizontal guide rail 2 are relatively fixed to be arranged, described to swash
Light device is the prior art, and details are not described herein；The horizontal guide rail 2 is strip and its length direction is arranged along the horizontal, horizontal
Guide rail is two (including rear horizontal guide rail 2a and preceding horizontal guide rails 2) and is located at the longitudinal two sides of power spreading device 1；Pass through water
Flat driving motor driving, (i.e. laterally) powdering, the upper and lower table of the horizontal guide rail 2 are realized in sliding to power spreading device 1 in left-right direction
Face is provided with bar shaped tooth, conducive to the stability for sliding of improving the standard；Laterally indicate the glide direction of power spreading device 1, vertical table
Show the length direction of power spreading device 1, i.e., perpendicular to lateral direction in horizontal plane；By by horizontal guide rail, power spreading device and swash
Light device system is arranged to move above and below, when realizing that product prints in situ when product conducive to preparing, for example preparing large product,
It can be prepared in situ and use, product is avoided to need to carry, especially product is indoors in use, avoiding doorway too small and cannot make to produce
The case where product are moved to.
In the present embodiment, the horizontal drive mechanism includes horizontal drive motor, horizontal drive gear and is set to level
2 surface of guide rail and the bar shaped tooth engaged with horizontal drive gear；The horizontal drive gear includes being located at 2 upside of horizontal guide rail simultaneously
With the horizontal sliding tooth wheel of upper active of 2 engaged transmission of horizontal guide rail and positioned at 2 downside of horizontal guide rail and biography is engaged with horizontal guide rail 2
Driven horizontal drive gear under dynamic；The output shaft of the horizontal drive motor and the horizontal sliding tooth wheel transmission of upper active cooperate,
Driven horizontal drive gear rotational installation is in power spreading device 1 under described；Longitudinal both ends (and front and back of the power spreading device 1
To both ends) be fixedly installed mounting plate 19, the mounting plate is horizontally disposed and longitudinally outer end face is recessed to form the water
Flat guiding groove 3, is provided with horizontal drive wheel via hole on mounting plate at outer end, the lower end of the upper horizontal sliding tooth wheel of active from
On penetrate horizontal drive wheel via hole be located at 2 upper surface of horizontal guide rail bar shaped tooth engagement, under driven horizontal drive gear it is upper
End penetrates horizontal drive wheel via hole and the bar shaped tooth engagement for being located at 2 lower surface of horizontal guide rail from down；Greatly improve entire horizontal biography
The stability of dynamic mechanism driving guarantees that preparation process precision is high.
In the present embodiment, the section of the horizontal guide rail 2 is the horizontal "convex" shaped that inside is directed toward at top along longitudinal direction, described
The inside upper and lower surfaces of horizontal guide rail 2 are respectively arranged with bar shaped tooth, and the outside upper and lower surfaces of horizontal guide rail 2 form horizontal movement
Sliding confined planes, the end of the power spreading device 1 forms the conformal level for being coated at the two slidings confined planes 4 of two inner sidewalls and leads
To groove 3；Longitudinal both ends (i.e. both ends in the front-back direction) of the power spreading device 1 are fixedly installed mounting plate, described
Mounting plate is horizontally disposed and longitudinally outer end face is recessed to form the horizontally-guided groove 3, is provided at outer end on mounting plate
Horizontal drive wheel via hole, the lower end of the upper horizontal sliding tooth wheel 5 of active penetrate horizontal drive wheel via hole from above and are located at horizontal guide rail 2
The bar shaped tooth engagement of upper surface, under driven horizontal drive gear 6 upper end penetrated from down horizontal drive wheel via hole be located at level
The bar shaped tooth engagement of 2 lower surface of guide rail；Mounting plate longitudinally outer end indicates along longitudinal direction close to one end of horizontal guide rail, otherwise is interior
End, conducive to the stability for guaranteeing power spreading device motion process, the mounting plate can be prepared for wear-resistant material.
In the present embodiment, the vertical driving mechanism includes positioned at 2 both ends of horizontal guide rail and longitudinal section is right angle trigonometry
The left and right wedge mount (including left wedge mount 7 and right wedge mount 8) of shape and for driving left and right wedge mount transversely single-degree-of-freedom
The wedge mount driving assembly of sliding；The both ends of the horizontal guide rail 2 are respectively arranged with left wheel 9a and right idler wheel 9, described to roll left
Wheel presses on the driving inclined-plane of left wedge mount, and the right idler wheel presses on the driving inclined-plane of right wedge mount, wedge mount driving assembly
For driving close to each other between left and right wedge mount or rising or falling far from realization horizontal guide rail 2；The left and right wedge shape
The apex angle of seat is 3-8 °；Preferably 5 °, it is conducive to balance lifting rate and lifting precision；By the spacing for controlling left and right wedge mount
From and then forming by the extruding on left and right wedge mount inclined-plane the vertical driving of horizontal guide rail 2, be conducive to improve power spreading device 1 vertical
The control precision and stability of movement.
In the present embodiment, the vertical driving mechanism further includes being fixed on the vertical guide post 10 of rack, described vertically to lead
Transversely it is located at the centre of horizontal guide rail 2 to column, vertical guide post is vertically provided with vertical guide groove 11, the horizontal guide rail
The prominent vertical guide pad 12 for forming the conformal vertical guide groove of insertion of 2 longitudinally outboard；By the setting of vertical guide groove, greatly
The accuracy and stability for improving 2 vertical motion of horizontal guide rail, greatly improve power spreading device 1 control precision, guarantee processing
Precision is high.
In the present embodiment, the horizontal guide rail 2 includes the preceding horizontal guide rail 2 and rear horizontal guide rail that front and back is distributed along longitudinal direction
21, the preceding horizontal guide rail 2 and rear horizontal guide rail 21 are respectively positioned between left and right wedge mount, and the inclined-plane of the left and right wedge mount is set
Four are equipped with respectively at the corresponding slide-and-guide slot 13 in preceding 2 both ends of horizontal guide rail and 21 both ends of rear horizontal guide rail, the sliding is led
It is arranged to slot along longitudinal section bevel edge direction of corresponding left and right wedge mount；The kinetic stability of horizontal guide rail 2 is further increased,
Unnecessary torque is avoided to generate.
In the present embodiment, the wedge mount driving assembly include wedge mount driving motor 14 and with wedge mount driving motor
Output shaft transmission cooperation driving screw rod, the bottom of the left and right wedge mount be respectively arranged with left driving screw hole and with left driving
The outer circle of the opposite right driving screw hole in screw hole direction of rotation, the driving screw rod is disposed with and left driving screw hole spiral shell along axial direction
First external thread section of line cooperation and the second external thread section being threadedly engaged with right driving screw hole, the wedge mount driving motor are logical
Overdriving, it is close to each other or separate between left and right wedge mount to drive screw rod to realize forward or reverse；By by left driving screw hole and
Right driving screw hole is set as identical pitch and pitch is smaller, is conducive to improve driving precision, drives smooth, the stability of structure
It is good.
In the present embodiment, the driving screw rod includes the preceding driving screw rod 15 that front and back is arranged along longitudinal direction and rear driving screw rod
16, the output shaft of the wedge mount driving motor is located at preceding driving screw rod and rear driving screw rod between side end, the wedge shape
Driving screw hole and rear driving screw hole before seat bottom is correspondingly arranged on along longitudinal direction (such as left wedge mount bottom be provided with before drive screw hole
20 drive screw hole 21 with rear), the output shaft fixed jacket of wedge mount driving motor is provided with power output gear 17, preceding driving spiral shell
Bar and rear driving screw rod end difference fixing sleeve are equipped with power input gear, and the power output gear and two power input tooth
Wheel 18, which engages and slows down, transmits power；The diameter of the power output gear is greater than the radius that power enters and leaves gear, and structure is simple
It is compact, power is transmitted by slowing down, is conducive to improve torque, guarantees driving, meanwhile, guarantee that left and right wedge mount sliding precision is high.
In the present embodiment, the bottom of the frame is provided with the laterally steering slot for being transversely oriented to left and right wedge mount,
The bottom of the left and right wedge mount is provided with the laterally steering block of the conformal insertion row guide groove, the laterally steering slot
It is dovetail groove with vertical guide groove；Slide smooth, stable structure.
In the present embodiment, the bottom of the frame is provided with the walking mechanism that can be locked up；The walking mechanism is idler wheel, institute
It states idler wheel and is provided with existing lockable mechanism, guarantee that rack is be easily moved, be suitable for processing in situ.
Certainly, whole device when in use, need to cover in whole device outside with unification and bottom opening and bottom surface are closed
Seal closure, the seal closure can be transparent and retractable cover, conducive to when using to vacuumized in it and be passed through inert gas into
Row processing.
In the present embodiment, it further includes for providing that the horizontal guide rail, which is vertically vertically provided with electromagnetism pressing force,
The electromagnetism hold-down mechanism of electromagnetism pressing force is stated, the electromagnetism hold-down mechanism includes the compact heap 23 of vertically single setting free to slide
With the top for being located at compact heap and with the electromagnetic drive block of the fixedly adjustable mode of vertical position vertically single setting free to slide
22, the compact heap is permanent magnet, is provided with electromagnetic coil in the electromagnetic drive block, the electromagnetic coil can produce for driving
Dynamic permanent magnet moves downward the electromagnetic field of level of compression guide rail；Certainly, battery coil is connected by external cord and electric control module
It connects, electric control module controls size of current and the direction of electromagnetic coil, and then controls the pressing force of compact heap, and structure is simply tight
It gathers；The electric control module belongs to the prior art, and details are not described herein.
In the present embodiment, the electromagnetism hold-down mechanism further includes the fixation chain for adjusting electromagnetic drive block height, institute
It states fixed chain 26 and setting is vertically moved by upper support gear 24 and lower support gear 25, be provided on the fixed chain
Lockable mechanism, the electromagnetic drive block are fixed on fixed chain and can be with fixed chain vertical motions in a manner of it can be locked up；
Conducive to the vertical position of fixed chain control electromagnetic drive block, guarantees that the vertical spacing of electromagnetic drive block and compact heap is suitable, protect
While card compresses, the vertical height of electromagnetism hold-down mechanism is lower.
In another embodiment, further include hydraulic compression component for applying downward hydraulic compression power to horizontal guide rail,
The hydraulic compression component includes hydraulic pump 27, hydraulic cylinder, return pipe 31 and oil storage cabin, and the oil outlet of the hydraulic pump passes through oil
Pipe 28 is connected to the driving inner cavity of hydraulic cylinder 29 and the hydraulic stem of driving hydraulic cylinder compresses downwards horizontal guide rail, the oil inlet of hydraulic pump
Mouth is connected to by pipeline with oil storage cabin, and the return pipe is provided with the solenoid valve 30 for controlling return pipe on-off, return pipe
One end is connected to the driving inner cavity of hydraulic cylinder, and the other end is connected to oil storage cabin；By hydraulic pump to the hydraulic stem (end of hydraulic stem
It is fixedly installed compact heap 30) continuous, biggish pressing force is generated, and when needing elevated levels guide rail, controllable opening is set
It is placed in the solenoid valve of return pipe, conducive to the driving inner cavity pressure release of hydraulic cylinder, is conducive to hydraulic stem and rises, and horizontal guide rail lifting operations
After the completion, solenoid valve is closed, so that the driving inner cavity of hydraulic cylinder is generated high pressure, guarantees the vertical level of compression guide rail of hydraulic stem.
In the present embodiment, the power spreading device includes that bottom is provided with the powdering box 31 of powder falling mouth and is set to powder falling mouth cross
To the doctor blade 32 in middle position, powder falling mouth is separated into left powder falling mouth 34 and right powder falling mouth 35, the powder falling by the doctor blade
The upper end of mouth is provided with the closing device that left powder falling mouth 34 or right powder falling mouth 35 are closed for selectivity；By controlling closing device
Rotatory beats to open left powder falling mouth or right powder falling mouth, is conducive to realize that power spreading device realizes two-way powder laying；Powdering can be effectively improved
Efficiency, guarantee powdering fineness, while structure is simple, operates smooth, and failure rate is small.
In the present embodiment, the closing device includes being articulated with the turnover panel 33 for scraping air knife top and for driving turnover panel to rotate
Turnover panel driving motor, the turnover panel driving motor be used for by drive turnover panel realize forward or reverse turnover panel to right powder falling mouth or
Left powder falling mouth is closed；It is simple and compact for structure, it is easy to accomplish；The turnover panel is elongated plates, certainly, the rotation of the turnover panel
The settable sealing strip of outer side edges, the inner sidewall of sealing strip and powdering box, which is formed, after returning face plate rotation seals, and structure is simple, controlling party
Just.
In the present embodiment, discharge roller 36, institute are additionally provided in a manner of around the rotation of center axis above the turnover panel
The outer circle of discharge roller and two laterally inboard wall gap settings of powdering box and respectively a left side corresponding with left discharge port and right discharge port
Discharge gap and right discharging gap, further includes driving for driving and controlling the discharge roller of the positive rotary speed of discharge roller or speed reversal
Motor；The lateral section of the powdering box includes upper rectangular section, middle inverted trapezoidal section and lower rectangular section, the upper rectangle from top to bottom
The width of section is greater than the width of lower rectangular section, and middle inverted trapezoidal section is the isosceles trapezoid that upper bottom is greater than bottom, and the discharge roller 36 is set
It is placed in the upper end inside lower rectangular section, the turnover panel is set to the lower end inside lower rectangular section, and the bottom of the doctor blade 32 is worn
Rectangular section is descended out.
In the present embodiment, it is provided in the powdering box for forming powder in powdering box along powdering box length direction
The rabbling mechanism of bidirectional circulating flowing, can powder inside uniform stirring power spreading device, guarantee that powdering is smooth, be conducive to quickly and
Accurate powdering；And it is simple and compact for structure, it is conducive to integral elevating；The rabbling mechanism is set on powdering box in rectangular section；
The rabbling mechanism includes the powder activated that helical blade 39 is provided with along the outer circle of powdering box length direction arrangement
Bar, the powder activated bar include the left powder activated bar 37 and right powder activated bar being set side by side along powdering box width direction
38, positioned at left powder activated bar helical blade be located at right powder activated bar helical blade it is oppositely oriented, further include use
Pass through transmission chain and a left side in the output shaft of the servo motor for driving left powder activated bar and right powder activated bar, the servo motor
Powder activated bar and the transmission cooperation of right powder activated bar；Conducive to effective flowing is formed in small space, guarantee uniform stirring.
In the present embodiment, the intermediate mistake for stone box inner cavity to be separated into epicoele and cavity of resorption is provided in the stone box
Sieve plate, it is described it is it is intracavitary be provided with rabbling mechanism, after upper intracavitary powder after stirring by intermediate filtered web plate by being filtered
Into cavity of resorption and further fall to strip blanking port；By being provided in stone box for stone box inner cavity to be separated into
The intermediate filtered web plate of epicoele and cavity of resorption, it is upper it is intracavitary be provided with rabbling mechanism, have clout recycle process, greatly improve powder
Cleanliness, guarantee that processing quality is high.
In the present embodiment, the intermediate filtered web plate is two pieces of (including upper intermediate filtered web plate 40 and lower intermediate filtered nets
Plate 41), and two screen packs are vertically side by side with detachable installation settings；Flange intermediate filtered web plate is replaced online,
When normal use, only with one block of intermediate filtered web plate.
In the present embodiment, the horizontal slot for the detachable installation of intermediate filtered web plate is provided in the stone box,
The intermediate filtered web plate is installed on stone box by horizontal slot grafting；Intermediate filtered web plate is convenient to mount and dismount, and improves operation effect
Rate.
It further include the clout recycling dress for being recycled to laying device unrestrained clout in laying device in the present embodiment
It sets；Metal powder clout is effectively recycled in guarantee, avoids waste of material, back and forth uses conducive to material, effectively reduces system
Volume is moved easily, and saves manufacturing cost.
In the present embodiment, the surplus material recovery device includes fixed jacket in the annular suction tube 43 of 42 bottom of work piece
The suction pump 44 being connected to pump orifice with annular suction tube cavity, the outlet of the suction pump 44 is matched by pipeline and laying device
Merging is reused for clout to be delivered to laying device；The annular suction tube side wall is provided with suction hole；To clout into
Row sufficiently recycling, the powder that annular suction tube is conducive to fall workpiece lateral wall aspirate, realize and recycle, avoid simultaneously
The powder of recycling is contaminated.
In the present embodiment, suction front tube 45 is provided with and communicated at the suction hole, the suction front tube is pliability
Pipe；The suction hole and suction front tube are multiple and are arranged in a one-to-one correspondence that suction hole and suction front tube are along annular suction tube
Circumferential setting, is set as flexible pipe by that will aspirate front tube, adjusts each suction front end conducive to the shape according to workpiece is conformal
The pump orifice position of pipe guarantees that pumping efficiency is high.
In the present embodiment, the top cover of the powdering box is tilting strainer shape cover board, the strainer shape cover board be used for into
The powder entered in powdering box carries out coarse filtration；The horizontally disposed simultaneously face strainer shape cover board of the outlet injection direction of the suction pump 44
Quickly filtering is realized in inclined surface, while the jet power of suction pump outlet can be avoided impurity and accumulate and make on strainer shape cover board
At closure.
The present embodiment also discloses a kind of selective laser melting method, includes the following steps：
(1) work as layer metal powder on substrate upper berth using selective laser melting system；
(2) it is dissolved to form an outer ring circular layer b according to work piece sized laser when on layer metal powder in step (1)；
(3) laser melts to form work piece lamella a in the outer ring circular layer of step (2)；
(4) power spreading device layer overlay metal powder, circulating repetition step externally are utilized on ring layer and work piece lamella
Suddenly (2) and step (3), until work piece is performed integrally.
In the present embodiment, in step (2), the loop wire width of outer ring circular layer is 5-1.5mm；Preferably 1mm.
In the present embodiment, in step (2), the inner circle of outer ring circular layer is radially 10- with the minimum spacing of work piece
15mm；Preferably 12mm.
In the present embodiment, in step (1)-(4), Seal treatment is carried out to process equipment and workpiece by a cover, and
Lead to inert gas in cover.
Selective laser melting system in the selective laser melting method is that the selective laser of above structure is molten
Change system.
Finally, it is stated that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although referring to compared with
Good embodiment describes the invention in detail, those skilled in the art should understand that, it can be to skill of the invention
Art scheme is modified or replaced equivalently, and without departing from the objective and range of technical solution of the present invention, should all be covered at this
In the scope of the claims of invention.
Claims (7)
1. a kind of powder filter type laser in-situ molding machine, it is characterised in that：Including rack, the paving for being laid with metal powder
Material device, selective melting metal powder Optical Maser System, move up and down and move horizontally for controlling laying device
Driving mechanism；The laying device includes the stone box that bottom is provided with strip blanking port, and setting is useful in the stone box
In the intermediate filtered web plate that stone box inner cavity is separated into epicoele and cavity of resorption, it is described it is it is intracavitary be provided with rabbling mechanism, it is described to stir
Mixing mechanism includes the powder activated bar that helical blade is provided with along the outer circle of powdering box length direction arrangement, the powder activated bar
Including the left powder activated bar and right powder activated bar being set side by side along powdering box width direction, positioned at the spiral shell of left powder activated bar
Vane piece is oppositely oriented with the helical blade positioned at right powder activated bar, further includes for driving left powder activated bar and right powder
The output shaft of the servo motor of last drive rod, the servo motor passes through transmission chain and left powder activated bar and right powder activated bar
Transmission cooperation；Upper intracavitary powder is by entering cavity of resorption after filtering after stirring by intermediate filtered web plate and further falling to length
Bar shaped blanking port.
2. powder filter type laser in-situ molding machine according to claim 1, it is characterised in that：The intermediate filtered net
Plate is two pieces, and two screen packs are vertically side by side and removably installation settings.
3. powder filter type laser in-situ molding machine according to claim 2, it is characterised in that：It is set in the stone box
It is equipped with the horizontal slot for the detachable installation of intermediate filtered web plate, the intermediate filtered web plate is pacified by horizontal slot grafting
Loaded on stone box.
4. powder filter type laser in-situ molding machine according to claim 3, it is characterised in that：It further include for that will spread
The unrestrained clout of material device is recycled to the surplus material recovery device in laying device.
5. powder filter type laser in-situ molding machine according to claim 3, it is characterised in that：The clout recycling dress
The suction pump that annular suction tube and pump orifice including fixed jacket in work piece bottom are connected to annular suction tube cavity is set,
The outlet of the suction pump matches to merge with usual pipeline with laying device to be reused for clout to be delivered to laying device.
6. powder filter type laser in-situ molding machine according to claim 5, it is characterised in that：The annular suction tube
Side wall is provided with suction hole.
7. powder filter type laser in-situ molding machine according to claim 6, it is characterised in that：Connect at the suction hole
Logical to be provided with suction front tube, the suction front tube is flexible pipe.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810625716.9A CN108859107B (en) | 2018-06-18 | 2018-06-18 | Powder filtering type laser in-situ forming device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810625716.9A CN108859107B (en) | 2018-06-18 | 2018-06-18 | Powder filtering type laser in-situ forming device |
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| CN108859107A true CN108859107A (en) | 2018-11-23 |
| CN108859107B CN108859107B (en) | 2020-12-04 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204122757U (en) * | 2014-10-27 | 2015-01-28 | 湖北工业大学 | A kind of powder automatic circulating system of laser 3D printer |
| CN104625062A (en) * | 2015-03-03 | 2015-05-20 | 重庆大学 | Reciprocating powder laying device for selective laser melting |
-
2018
- 2018-06-18 CN CN201810625716.9A patent/CN108859107B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204122757U (en) * | 2014-10-27 | 2015-01-28 | 湖北工业大学 | A kind of powder automatic circulating system of laser 3D printer |
| CN104625062A (en) * | 2015-03-03 | 2015-05-20 | 重庆大学 | Reciprocating powder laying device for selective laser melting |
Non-Patent Citations (1)
| Title |
|---|
| 欧阳钦: "《混凝土结构工程施工》", 29 February 2016, 重庆大学出版社 * |
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| CN108859107B (en) | 2020-12-04 |
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Effective date of registration: 20201119 Address after: 325000 room 104, No. 6, Lane 93, Lucheng Road, Shuixin street, Lucheng District, Wenzhou City, Zhejiang Province Applicant after: Zheng Duoduo Address before: 402247 No. 401 Fuyun Avenue, Shuang Fu Street, Jiangjin District, Chongqing, 3 No. 9-4 Applicant before: CHONGQING ENGUANG TECHNOLOGY Co.,Ltd. |
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