CN108941554A - Laser with clout recycling is melted and molded machine - Google Patents
Laser with clout recycling is melted and molded machine Download PDFInfo
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- CN108941554A CN108941554A CN201810625699.9A CN201810625699A CN108941554A CN 108941554 A CN108941554 A CN 108941554A CN 201810625699 A CN201810625699 A CN 201810625699A CN 108941554 A CN108941554 A CN 108941554A
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- Prior art keywords
- clout
- driving
- laying device
- melted
- guide rail
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/20—Direct sintering or melting
- B22F10/28—Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/70—Recycling
- B22F10/73—Recycling of powder
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
- B22F12/22—Driving means
- B22F12/222—Driving means for motion along a direction orthogonal to the plane of a layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
- B22F12/22—Driving means
- B22F12/224—Driving means for motion along a direction within the plane of a layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
- B22F12/22—Driving means
- B22F12/226—Driving means for rotary motion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
- B22F12/50—Means for feeding of material, e.g. heads
- B22F12/57—Metering means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/003—Apparatus, e.g. furnaces
-
- 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
- B33Y10/00—Processes of additive manufacturing
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Processing Of Solid Wastes (AREA)
- Road Paving Machines (AREA)
Abstract
The invention discloses a kind of laser with clout recycling to be melted and molded machine, and the Optical Maser System of laying device, selective melting metal powder including rack, for being laid with metal powder, the horizontal guide rail for being used to support laying device, the vertical driving mechanism for driving horizontal guide rail vertical motion and the clout for trickling down laying device are recycled to the surplus material recovery device in laying device；The horizontal drive mechanism for cooperating driving laying device horizontal reciprocating movement with horizontal guide rail is provided on the laying device；Laser with clout recycling of the invention is melted and molded machine；While can be realized processing in situ, metal powder clout is effectively recycled in guarantee, avoids waste of material, back and forth uses conducive to material, effectively reduce system bulk, is moved easily.
Description
Technical field
The present invention relates to manufacturing fields, and in particular to a kind of laser melt-forming machine with clout recycling.
Background technique
Rapid shaping technique is a kind of novel manufacturing technology to grow up the 1980s, which is by zero
Part threedimensional model slicing treatment successively accumulates, is finally superimposed as the process of Three-dimensional Entity Components.Rapid shaping technique breaches
Conventional deformation forms and removes molding thinking, realizes the theory of " net forming ".Rapid shaping mainly has 3 classes: selectivity
Laser sintering technology SLS), laser melting coating manufacturing technology (LENS), selective laser melting technology (SLM).Wherein selectivity swashs
The part consistency of light smelting 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 countries grind in SLM device
Commercialization stage is come on studying carefully.Asia is concentrated mainly on Singapore, Japan and other countries；In the prior art, it usually controls
The lifting of platform realizes that bisque layering successively declines, and realization top is next machined layer；And the area of platform be it is certain,
Area corresponds to the floor space of machining area, and is directed to various sizes of work piece, and the constancy of volume of machining area makes
It obtains when processing small size workpiece, still needs to fill up in the equal powder in the space of machining area, so that processing raw material pollution waste,
Raw material recovery processing is cumbersome, meanwhile, when to extreme large and heavy workpiece, which can not achieve processing in situ, that is, need to add
It is carried to field of employment after work is good, processing efficiency is low, and limitation is big, and the scope of application is limited.
Therefore, in order to solve the above problem, need a kind of selective laser melting system, can be realized process in situ it is same
When, metal powder clout is effectively recycled in guarantee, avoids waste of material, effectively reduces system bulk.
Summary of the invention
In view of this, it is molten to provide the laser with clout recycling the purpose of the present invention is overcoming defect in the prior art
Change molding machine, while can be realized processing in situ, metal powder clout is effectively recycled in guarantee, waste of material is avoided,
Effectively reduce system bulk.
Laser with clout recycling of the invention is melted and molded machine, including rack, the stone for being laid with metal powder
Device, selective melting metal powder Optical Maser System, be used to support laying device horizontal guide rail, for driving level
The vertical driving mechanism of guide rail vertical motion and for by laying device trickle down clout be recycled to the clout in laying device return
Receiving apparatus；The horizontal drive for cooperating driving laying device horizontal reciprocating movement with horizontal guide rail is provided on the laying device
Mechanism.
Further, the surplus material recovery device includes fixed jacket in the annular suction tube of work piece bottom and suction
The suction pump that mouth is connected to annular suction tube cavity, the outlet of the suction pump matches with laying device with usual pipeline and merges use
It is reused in clout is delivered to laying device；
Further, the annular suction tube side wall is provided with suction hole.
Further, suction front tube is provided with and communicated at the suction hole, the suction front tube is flexible pipe.
Further, the power spreading device includes that bottom is provided with the powdering box of powder falling mouth and is set in powder falling mouth transverse direction
Between position doctor blade, powder falling mouth is separated into left powder falling mouth and right powder falling mouth by the doctor blade, and the upper end of the powder falling mouth is set
It is equipped with the closing device that left powder falling mouth or right powder falling mouth are closed for selectivity.
Further, the closing device includes being articulated with the turnover panel for scraping air knife top and for driving turning over for turnover panel rotation
Plate driving motor, the turnover panel driving motor are used for by driving turnover panel to realize turnover panel to right powder falling mouth or a left side forward or reverse
Powder falling mouth is closed.
Further, discharge roller, institute's discharge roller are additionally provided in a manner of around the rotation of center axis above the turnover panel
Outer circle and powdering box two laterally inboard wall gap settings and left discharge room corresponding with left discharge port and right discharge port respectively
Gap and right discharging gap further include the discharging roll drive motor for driving and controlling the positive rotary speed of discharge roller or speed reversal.
The beneficial effects of the present invention are: a kind of laser with clout recycling disclosed by the invention is melted and molded machine, it can
While realizing processing in situ, metal powder clout is effectively recycled in guarantee, avoids waste of material, and it is reciprocal to be conducive to material
It uses, effectively reduces system bulk, be moved easily.
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 laser melt-forming machine with clout recycling in the present embodiment, including rack (not shown),
For being laid with the power spreading device 1 of metal powder, the Optical Maser System of selective melting metal powder, being used to support power spreading device 1
Horizontal guide rail and vertical driving mechanism for driving 2 vertical motion of horizontal guide rail, be provided on the power spreading device 1 with
The horizontal drive mechanism of cooperation driving 1 horizontal reciprocating movement of power spreading device of horizontal guide rail 2, the Optical Maser System are led with level
The relatively fixed setting of rail 2, the laser is the prior art, and details are not described herein；The horizontal guide rail 2 be strip and its
Length direction is arranged along the horizontal, and horizontal guide rail is two (including rear horizontal guide rail 2a and preceding horizontal guide rails 2) and is located at paving
The longitudinal two sides of powder device 1；By horizontal drive motor driven, (i.e. laterally) paving is realized in sliding to power spreading device 1 in left-right direction
The upper and lower surfaces of powder, the horizontal guide rail 2 are 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, longitudinal length direction for indicating power spreading device 1, i.e., perpendicular to lateral direction in horizontal plane；
It is removable above and below by the way that horizontal guide rail, power spreading device and Optical Maser System to be arranged to, product is realized when product conducive to preparing
Printing in situ, for example when preparing large product, can be prepared in situ and use, product is avoided to need to carry, especially product are indoors
In use, the case where avoiding doorway too small and product cannot being made to be 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
And and 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 nibbled with horizontal guide rail 2
Close driven horizontal drive gear under transmission；The output shaft of the horizontal drive motor and the horizontal sliding tooth wheel of upper active are driven
Cooperation, driven horizontal drive gear rotational installation is in power spreading device 1 under described；The power spreading device 1 longitudinal both ends (and
Both ends in the front-back direction) it is fixedly installed mounting plate 19, the mounting plate is horizontally disposed and longitudinally outer end face is recessed to be formed
The horizontally-guided groove 3 is provided with horizontal drive wheel via hole, the upper horizontal sliding tooth wheel of active at outer end on mounting plate
Lower end penetrated from above horizontal drive wheel via hole be located at 2 upper surface of horizontal guide rail bar shaped tooth engagement, under driven horizontal drive
The upper end of gear 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；It greatly improves
The stability of entire horizontal drive mechanism transmission, 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, institute
The inside upper and lower surfaces for stating horizontal guide rail 2 are respectively arranged with bar shaped tooth, and the outside upper and lower surfaces of horizontal guide rail 2 form level
The sliding confined planes of movement, the end of the power spreading device 1 form the conformal two slidings confined planes 4 of being coated at of two inner sidewalls
Horizontally-guided groove 3；Longitudinal both ends (i.e. both ends in the front-back direction) of the power spreading device 1 are fixedly installed installation
Plate, the mounting plate is horizontally disposed and longitudinally outer end face is recessed to form the horizontally-guided groove 3, close to outer end on mounting plate
Place is provided with horizontal drive wheel via hole, and the lower end of the upper horizontal sliding tooth wheel 5 of active penetrates horizontal drive wheel via hole from above and is located at
The bar shaped tooth engagement of 2 upper surface of horizontal guide rail, under the upper end of driven horizontal drive gear 6 horizontal drive wheel via hole is penetrated from down
With the bar shaped tooth engagement for being located at 2 lower surface of horizontal guide rail；Mounting plate longitudinally outer end indicates along longitudinal direction close to the one of horizontal guide rail
End, on the contrary be inner end, conducive to guarantee power spreading device motion process stability, the mounting plate can for wear-resistant material preparation and
At.
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 perpendicular
To 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, and the level is led
The prominent vertical guide pad 12 for forming the conformal vertical guide groove of insertion of the longitudinally outboard of rail 2；By the setting of vertical guide groove,
The accuracy and stability of 2 vertical motion of horizontal guide rail are greatly improved, power spreading device 1 is greatly improved and controls precision, guarantee
Machining accuracy 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, the inclined-plane of the left and right wedge mount
Four are provided 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
Longitudinal section bevel edge direction arrangement of the guide groove along corresponding left and right wedge mount；Further increase the motion stabilization of horizontal guide rail 2
Property, avoid unnecessary torque from generating.
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 drive
The outer circle of the opposite right driving screw hole in dynamic screw hole direction of rotation, the driving screw rod is disposed with and left driving spiral shell along axial direction
The first external thread section that hole is threadedly engaged and the second external thread section being threadedly engaged with right driving screw hole, the wedge mount driving
Motor is realized close to each other or separate between left and right wedge mount forward or reverse by driving driving screw rod；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, drive it is smooth, structure
Stability 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 spiral shell
Hole 20 and rear driving screw hole 21), the output shaft fixed jacket of wedge mount driving motor is provided with power output gear 17, forerunner
Dynamic screw rod and rear driving screw rod end difference fixing sleeve are equipped with power input gear, the power output gear and two power
Input gear 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, knot
Structure is simple and compact, transmits power by slowing down, and is conducive to improve torque, guarantees driving, meanwhile, guarantee left and right wedge mount sliding essence
Degree is high.
In the present embodiment, the bottom of the frame is provided with the laterally steering for being transversely oriented to left and right wedge mount
Slot, the bottom of the left and right wedge mount are provided with the laterally steering block of the conformal insertion row guide groove, and the transverse direction is led
It is dovetail groove to slot and 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,
The idler wheel is provided with existing lockable mechanism, guarantees that rack is be easily moved, and is 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 of vertically single setting free to slide
23 and positioned at compact heap top and with the electromagnetic drive of the fixedly adjustable mode of vertical position vertically single setting free to slide
Block 22, the compact heap are permanent magnet, are provided with electromagnetic coil in the electromagnetic drive block, the electromagnetic coil can produce use
The electromagnetic field of level of compression guide rail is moved downward in driving permanent magnet；Certainly, battery coil passes through external cord and automatically controlled molding
Block connection, electric control module control size of current and the direction of electromagnetic coil, and then control the pressing force of compact heap, structure letter
It is single compact；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 arranged on the fixed chain
There is lockable mechanism, the electromagnetic drive block is fixed on fixed chain and can vertically transport in a manner of it can be locked up with fixed chain
It is dynamic；Conducive to the vertical position of fixed chain control electromagnetic drive block, guarantee that the vertical spacing of electromagnetic drive block and compact heap is closed
Suitable, while guaranteeing to compress, 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, hydraulic pump
Oil inlet 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, reflux
One end of pipe is connected to the driving inner cavity of hydraulic cylinder, and the other end is connected to oil storage cabin；By hydraulic pump to hydraulic stem (hydraulic stem
End be fixedly installed compact heap 30) generate continuous, biggish pressing force, and when needing elevated levels guide rail, can control
The solenoid valve for being set to return pipe is opened, conducive to the driving inner cavity pressure release of hydraulic cylinder, is conducive to hydraulic stem and rises, and horizontal guide rail
After the completion of lifting operations, solenoid valve is closed, so that the driving inner cavity of hydraulic cylinder is generated high pressure, guarantees the vertical level of compression of hydraulic stem
Guide rail.
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
The doctor blade 32 of lateral mid-point, powder falling mouth is separated into left powder falling mouth 34 and right powder falling mouth 35 by the doctor blade, described to fall
The upper end of powder mouth is provided with the closing device that left powder falling mouth 34 or right powder falling mouth 35 are closed for selectivity；It is sealed by control
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；It can effectively improve
The efficiency of powdering guarantees powdering fineness, while structure is simple, and running is 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 turn
Dynamic turnover panel driving motor, the turnover panel driving motor are used for by driving turnover panel to realize turnover panel to right powder falling forward or reverse
Mouth or left powder falling mouth are closed；It is simple and compact for structure, it is easy to accomplish；The turnover panel is elongated plates, certainly, the turnover panel
The settable sealing strip of rotation outer side edges, the inner sidewall of sealing strip and powdering box, which is formed, after returning face plate rotation seals, structure letter
It is single, it is easy to control.
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
Dynamic motor；The lateral section of the powdering box includes upper rectangular section, middle inverted trapezoidal section and lower rectangular section from top to bottom, it is described on
The width of rectangular 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, the discharge roller
36 are set to the upper end inside lower rectangular section, and the turnover panel is set to the lower end inside lower rectangular section, the bottom of the doctor blade 32
Portion is pierced by lower rectangular section.
In the present embodiment, it is provided in the powdering box for making powder in powdering box along powdering box length direction shape
It is in pairs to the rabbling mechanism circulated, can powder inside uniform stirring power spreading device, guarantee that powdering is smooth, be conducive to fast
Fast and accurate powdering；And it is simple and compact for structure, it is conducive to integral elevating；The rabbling mechanism is set to rectangular section on powdering box
It is interior；
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
In the servo motor for driving left powder activated bar and right powder activated bar, the output shaft of the servo motor by transmission chain with
Left 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 centre for stone box inner cavity to be separated into epicoele and cavity of resorption is provided in the stone box
Screen pack, it is described it is it is intracavitary be provided with rabbling mechanism, upper intracavitary powder after stirring by intermediate filtered web plate by being filtered
Enter cavity of resorption afterwards and further falls to strip blanking port；By being provided in stone box for dividing stone box inner cavity
Be divided into the intermediate filtered web plate of epicoele and cavity of resorption, it is upper it is intracavitary be provided with rabbling mechanism, in the process for thering is clout to recycle, mention significantly
The cleanliness of high powder guarantees 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 for being recycled to laying device unrestrained clout in laying device in the present embodiment
Device；Metal powder clout is effectively recycled in guarantee, avoids waste of material, back and forth uses conducive to material, effectively reduces and is
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 of 42 bottom of work piece
43 and pump orifice and the suction pump 44 that be connected to of annular suction tube cavity, the outlet of the suction pump 44 passes through pipeline and stone dress
It sets and is reused with merging for clout to be delivered to laying device；The annular suction tube side wall is provided with suction hole；To remaining
Material is sufficiently recycled, and the powder that annular suction tube is conducive to fall workpiece lateral wall aspirates, and is realized and is recycled, together
When avoid the powder of recycling 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
Inclined surface, realize quickly filtering, while the jet power of suction pump outlet can be avoided impurity accumulated on strainer shape cover board and
It causes to block.
The present embodiment also discloses a kind of selective laser melting method, including the following steps:
(1) machine is melted and molded using the laser with clout recycling work as layer metal powder on substrate upper berth；
(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.
The laser with clout recycling in the selective laser melting method is melted and molded the tool that machine is above structure
The laser for having clout to recycle is melted and molded machine.
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 laser with clout recycling is melted and molded machine, it is characterised in that: including rack, for being laid with metal powder
Laying device, selective melting metal powder Optical Maser System, be used to support laying device horizontal guide rail, for driving water
The vertical driving mechanism of level gauge vertical motion and for by laying device trickle down clout be recycled to the clout in laying device
Recyclable device；The horizontal drive for cooperating driving laying device horizontal reciprocating movement with horizontal guide rail is provided on the laying device
Mechanism.
2. the laser according to claim 1 with clout recycling is melted and molded machine, it is characterised in that: the clout recycling
Device includes the suction that annular suction tube and pump orifice of the fixed jacket in work piece bottom are connected to annular suction tube cavity
Pump, the outlet of the suction pump are matched to merge and be made for clout to be delivered to laying device again with usual pipeline with laying device
With.
3. the laser according to claim 2 with clout recycling is melted and molded machine, it is characterised in that: the annular suction
Pipe side wall is provided with suction hole.
4. the laser according to claim 3 with clout recycling is melted and molded machine, it is characterised in that: at the suction hole
It is provided with and communicated with suction front tube, the suction front tube is flexible pipe.
5. the laser according to claim 4 with clout recycling is melted and molded machine, it is characterised in that: the power spreading device
Bottom is provided with the powdering box of powder falling mouth and is set to the doctor blade of powder falling mouth lateral mid-point, the doctor blade will be fallen
Powder mouth is separated into left powder falling mouth and right powder falling mouth, and the upper end of the powder falling mouth, which is provided with, closes left powder falling mouth or the right side for selectivity
The closing device of powder falling mouth.
6. the laser according to claim 5 with clout recycling is melted and molded machine, it is characterised in that: the closing device
Including being articulated with the turnover panel for scraping air knife top and the turnover panel driving motor for driving turnover panel to rotate, the turnover panel driving motor is used
In by driving turnover panel to realize that turnover panel closes right powder falling mouth or left powder falling mouth forward or reverse.
7. the laser according to claim 6 with clout recycling is melted and molded machine, it is characterised in that: above the turnover panel
Discharge roller, the outer circle of institute's discharge roller and two laterally inboard walls of powdering box are additionally provided in a manner of around the rotation of center axis
Gap setting and respectively left discharging gap corresponding with left discharge port and right discharge port and right discharging gap, further include for driving
And control the discharging roll drive motor of the positive rotary speed of discharge roller or speed reversal.
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| CN201810625699.9A CN108941554B (en) | 2018-06-18 | 2018-06-18 | Laser melting forming machine with excess material recovery function |
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