CN108381929A - Control method and the 3D printing equipment being applicable in - Google Patents
Control method and the 3D printing equipment being applicable in Download PDFInfo
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- CN108381929A CN108381929A CN201810180091.XA CN201810180091A CN108381929A CN 108381929 A CN108381929 A CN 108381929A CN 201810180091 A CN201810180091 A CN 201810180091A CN 108381929 A CN108381929 A CN 108381929A
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- cured layer
- container
- residue
- optical system
- printing equipment
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- 238000010146 3D printing Methods 0.000 title claims abstract description 87
- 238000000034 method Methods 0.000 title claims abstract description 49
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- 238000004519 manufacturing process Methods 0.000 claims abstract description 70
- 238000001514 detection method Methods 0.000 claims description 59
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Classifications
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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
- B29C64/386—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
- 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
- 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
- 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
Abstract
The 3D printing equipment that the application provides a kind of control method and is applicable in.The control method be included in a print job start before or after the completion, enable the optical system into the container radiated light energy with the bottom surface manufacture a cured layer；The cured layer covers the drop shadow spread of object manufactured by the 3D printing equipment last time print job, so that residue of the removal in the container bottoms when cured layer is detached from the transparent bottom surface.The application manufactures a cured layer in container bottoms by the above method and detaches the cured layer to remove the residue in container bottoms from bottom surface.
Description
Technical field
This application involves mobile 3D printing fields, more particularly to a kind of control method and the 3D printing equipment being applicable in.
Background technology
3D printing is one kind of rapid shaping technique, it be one kind based on digital model file, with powdered gold
Belong to, the adhesive materials such as plastics and resin, constructs the technology of object by layer-by-layer printing.3D printing equipment is by holding
This kind of printing technique of row manufactures 3D objects.3D printing equipment is since formed precision height is in mold, goods made to order, medical jig, vacation
The fields such as body have extensive use.Wherein, the 3D printing equipment based on bottom surface exposure is arranged one due to only needing in container bottom
The photo-curing material of floor height more saves material, therefore chased after and dote on by many character product producers compared with upper exposure.
The 3D printing equipment of the bottom surface exposure includes the container for holding photo-curing material, the optics below container bottom
System, panels and the Z axis drive system for driving panels lifting.Wherein, when using the 3D printing equipment printing objects,
The optical system is irradiated the photo-curing material of container bottom to form first layer cured layer, the first layer cured layer
It is attached on panels, panels rise movement under the drive of Z axis drive system so that the cured layer divides from container bottom
From then declining the panels and to fill photocuring material to be solidified between the container bottom and first layer cured layer
Material, irradiates again to obtain being attached to the second layer cured layer on first layer cured layer, and so on, by repeatedly filling, shining
It penetrates and lock out operation, each cured layer is accumulated on panels to obtain 3D components.
However, in practical print procedure, by the edge energy that optical system is projected be not enough to cure it is sufficiently thick
Cured layer so that the partially cured material, which is left on container bottom in lock out operation, becomes residue, is made to subsequently printing
At influence.
Invention content
In view of the foregoing deficiencies of prior art, the application is designed to provide a kind of control method and is applicable in
3D printing equipment, for solving the problems, such as the container bottom of 3D printing equipment in the prior art, there are residues.
In order to achieve the above objects and other related objects, the first aspect of the application provides a kind of control method, is applied to
3D printing equipment based on bottom surface exposure, wherein the 3D printing equipment includes having the container of transparent bottom surface and set on described
The optical system of container transparent subjacent, the control method include：Before a print job starts or after the completion, institute is enabled
State optical system into the container radiated light energy with the bottom surface manufacture a cured layer；The cured layer covers the 3D
The drop shadow spread of object manufactured by the print job of printing device last time, when so that the cured layer being detached from the transparent bottom surface
Remove the residue in the container bottoms.
In the certain embodiments of the first aspect of the application, the control method is further comprising the steps of：It will be described
The step of component platform in 3D printing equipment removes the distance range of manufactured cured layer.
In the certain embodiments of the first aspect of the application, manufactured cured layer floor height is the light based on pre-configuration
The radiation parameter of energy and determination or manufactured cured layer floor height is the floor height based on the preset cured layer and it is true
Fixed.
In the certain embodiments of the first aspect of the application, the pattern of manufactured cured layer is beaten based on the 3D
The drop shadow spread of object manufactured by the print job of printing apparatus last time and the pattern of determination or manufactured cured layer is base
The radiation breadth of optical system in the 3D printing equipment and determination.
In the certain embodiments of the first aspect of the application, at least one angle of manufactured cured layer is arc-shaped.
It is described that the optical system is enabled to be radiated into the container in the certain embodiments of the first aspect of the application
Light energy to include in the bottom surface one cured layer of manufacture：Operational order based on user's triggering controls the optical system to institute
Radiated light energy is stated in container to manufacture a cured layer in the bottom surface.
In the certain embodiments of the first aspect of the application, the control method further includes the detection container bottoms
The step of whether being stained with residue.
In the certain embodiments of the first aspect of the application, whether the detection container bottom surface is stained with the step of residue
Suddenly include：Control streaks container bottoms positioned at the scraping blade ontology of the container bottoms, and based on the power detected during streaking
Induction information determines whether the container bottoms are stained with residue.
In the certain embodiments of the first aspect of the application, whether the detection container bottom surface is stained with the step of residue
Suddenly include：Shooting includes the detection image of institute's container bottoms, by analyzing whether the detection image determines the container bottoms
It is stained with residue.
In the certain embodiments of the first aspect of the application, whether the detection container bottom surface is stained with the step of residue
Suddenly include：Control streaks container bottoms with the base surface area at the streaked place of exposure positioned at the scraping blade ontology of the container bottoms,
The detection image that shooting includes exposed base surface area during streaking determines the container bottoms by analyzing the detection image
Whether residue is stained with.
The second aspect of the application also provides a kind of 3D printing equipment, including：Container with transparent bottom surface, holds and waits for into
The photo-curing material of type；Optical system is located at below the container and penetrates bottom surface radiated light energy into container；Component
Platform, for adhering in the container three-dimension object for being radiated and manufactured by optical system；Z axis drive system, with component platform
It is connected, for driving the component platform vertical shift；Control system is connect with the optical system and Z axis drive system, is used
Before starting in a print job or after the completion, enable the optical system into the container radiated light energy at the bottom
Face manufactures a cured layer；The cured layer covers the projection model of 3D printing equipment last time print job institute printing objects
It encloses, so that residue of the removal in the container bottoms when cured layer is detached from the transparent bottom surface.
In the certain embodiments of the second aspect of the application, the control system is additionally operable to the 3D printing equipment
In component platform remove the distance range of manufactured cured layer；Or the control system is additionally operable to control the Z axis driving
System is by the cured layer from the transparent bottom surface separation to remove the residue in the container bottoms.
In the certain embodiments of the second aspect of the application, the spoke of light energy of the control system based on pre-configuration
Optical system radiated light energy described in state modulator is penetrated to manufacture the cured layer of default floor height；Or the control system is based in advance
If the floor height of the cured layer control the optical system radiated light energy to manufacture the cured layer of corresponding floor height.
In the certain embodiments of the second aspect of the application, the control system is based on one in the 3D printing equipment
It is corresponding to control the optical system radiated light energy manufacture for the pattern of the drop shadow spread of object manufactured by secondary print job and determination
Cured layer；Or radiation breadth of the control system based on the optical system, control the optical system radiation luminous energy
Amount is to manufacture the cured layer.
In the certain embodiments of the second aspect of the application, the 3D printing equipment further includes and the control system
Connected human-computer interaction device；The operational order that the control system is generated based on human-computer interaction device described in user's operation,
Control the optical system into the container radiated light energy with the bottom surface manufacture a cured layer.
In the certain embodiments of the second aspect of the application, the control system is additionally operable to detect the container bottoms
Whether residue is stained with.
In the certain embodiments of the second aspect of the application, the 3D printing equipment further includes：Squeegee devices, including
Be arranged the container bottoms scraping blade ontology and the power sensing unit in the scraping blade ontology is set；Wherein, the control system
System controls the squeegee devices and streaks the container bottoms, and determines that the container bottoms are based on acquired power induction information
It is no to be stained with residue.
In the certain embodiments of the second aspect of the application, the 3D printing equipment further includes：Squeegee devices, including
Scraping blade ontology in the container bottoms is set, the base surface area streaked for the exposure during streaking container bottoms；Shooting
Device, for shooting the detection image for including exposed base surface area；The control system connects the squeegee devices and bat
Device is taken the photograph, the container bottoms are streaked for controlling the squeegee devices, controls the filming apparatus shot detection image, and
Determine whether the container bottoms are stained with residue by detecting the detection image.
In the certain embodiments of the second aspect of the application, the 3D printing equipment further includes filming apparatus, is used for
Shooting includes the detection image of the bottom surface；The control system determines that the container bottoms are by analyzing the detection image
It is no to be stained with residue.
The third aspect of the application also provides a kind of control system, including：Storage unit, for storing at least one journey
Sequence；Processing unit is connected with the storage unit, for reading at least one program with execute it is aforementioned in it is any described
Control method.
The fourth aspect of the application also provides a kind of storage medium of computer equipment, which is characterized in that is stored at least
One program, executed when described program is executed by processor it is aforementioned in any control method.
As described above, the control method of the application and the 3D printing equipment being applicable in, have the advantages that：Pass through order
Optical system into container radiated light energy with container bottoms manufacture a cured layer and by the cured layer from bottom surface detach with
Remove the residue in container bottoms.
Description of the drawings
Fig. 1 is shown as the structural schematic diagram of the 3D printing equipment of the application in one embodiment.
Fig. 2 is shown as the structural schematic diagram of the 3D printing equipment of the application in another embodiment.
Fig. 3 is shown as the structural schematic diagram of the control system of the application in one embodiment.
Fig. 4 is shown as the flow chart of the control method of the application in one embodiment.
Fig. 5 is shown as the flow chart of the control method of the application in another embodiment.
Specific implementation mode
Illustrate that presently filed embodiment, those skilled in the art can be by this specification below by way of specific specific example
Disclosed content understands other advantages and effect of the application easily.The application can also pass through in addition different specific realities
The mode of applying is embodied or practiced, the various details in this specification can also be based on different viewpoints with application, without departing from
Various modifications or alterations are carried out under spirit herein.
It should be noted that structure, ratio, size etc. depicted in this specification institute accompanying drawings, only coordinating
The bright revealed content of book is not limited to the enforceable limit of the application so that those skilled in the art understands and reads
Fixed condition, therefore do not have technical essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size, not
It influences under the effect of the application can be generated and the purpose that can reach, should all still fall and be obtained in techniques disclosed in this application content
In the range of capable of covering.
In the practical operation of 3D printing, since the edge energy that optical system is projected is not enough to cure sufficiently thick consolidate
Change layer so that the partially cured material, which is left on container bottom in lock out operation, becomes residue.The residue is in 3D
Printing device may adhere on manufactured three-dimension object when printing next time, causes manufactured three-dimension object
Distortion in structure.Therefore, when 3D printing equipment before starting print job or complete a print job after, user's hand
The residue of container bottom is rooted out in building site, and container bottom noresidue when ensuring printing next time improves print quality.
Referring to Fig. 1, Fig. 1 is shown as the structural schematic diagram of the 3D printing equipment of the application in one embodiment, such as scheme
Shown, 3D printing equipment includes container 11, component platform 12, Z axis drive system 13, optical system 14 and control system 15.
Wherein, container 11 has transparent bottom surface, for holding photo-curing material to be formed.The photo-curing material includes
Any liquid material for being easy to photocuring, citing include：Light-cured resin liquid, or to be doped with additive, pigment, dyestuff etc. mixed
The resin liquid etc. of condensation material.The container can be whole clearing or only container bottom is transparent.For example, the container holds for glass
Device, and chamber wall is sticked extinction paper (such as black thin film or black paper), to reduce during projection since light scattering is to light
The solidification of curing materials is interfered.
Optical system 14 is located at 11 lower section of container and penetrates bottom surface radiated light energy into container.For example, the optical system
System may include laser emitter, lens group, galvanometer group and controller.Wherein, the controlled adjustment output of the laser emitter
The energy of laser beam, for example, the laser beam of the controlled transmitting predetermined power of the laser emitter and stopping emit the laser
Beam, for another example, the power of the controlled raising laser beam of the laser emitter and the power for reducing laser beam.The lens group position
In laser emitter light emission side, the focal position for adjusting the laser beam sent out by laser emitter.The galvanometer group is located at
The light emission side of lens group, to according to receive slice figure so that laser beam is scanned in the two-dimensional space of container bottom, through swash
The photo-curing material of light beam scanning is cured into corresponding pattern cured layer.Wherein, the slice figure is to be in advance based on 3D structures
Part model is formed by cross obtained from Z-direction (i.e. along short transverse) carries out transversal division, in every adjacent transversal division
The slice figure sketched the contours by the profile of 3D component models is formed in cross-sectional layers, in the case where the cross-sectional layer is sufficiently thin,
We assert that the contour line of cross section surface and lower cross section surface is consistent in the cross-sectional layer.
Alternatively, the optical system can be projection arrangement.For example, the projection arrangement includes light source, dmd chip, control
Device processed and memory module.Wherein, the slice for the 3D component models layering that storage layered image describes in the memory module
Figure.Light source is irradiated to container bottoms by dmd chip after the control signal for receiving controller.Wherein, dmd chip appearance
Seem an only small pieces mirror, is encapsulated in the confined space that metal is formed with glass, in fact, this face mirror is by counting
100000 so a micro mirror up to a million formed, as soon as each micro mirror represents a pixel, the image projected is by these pixels
It is constituted.Dmd chip can be briefly described semiconductor optical switch and micromirror as corresponding pixel points, and the controller passes through
Each photoswitch carrys out each microwafer reflected light of Enable/Disable in control dmd chip, thus by corresponding layered image by the saturating of container
Bright bottom is irradiated on photo-curing material so that the photo-curing material of correspondence image shape is cured, patterned solid to obtain
Change layer.
Component platform 12 is for adhering in container 11 by the three-dimension object that optical system 14 radiates and manufactures, so as to via institute
Pattern cured layer is stated to accumulate to form 3D components.Specifically, the component platform is exemplified as panels.The component platform usually with
It is initial position positioned at container bottoms, successively accumulates cured each pattern cured layer on the container bottoms, it is corresponding to obtain
Three-dimension object.
Z axis drive system 13 is connect with component platform 12, in order to accumulate each pattern cured layer, in Z axis drive system 13
Under drive, the constantly spacing of adjustment and 11 bottom of container of component platform 12 is with the photocuring material to be solidified in 11 underfill of container
Material, and drive component platform 12 to rise so that the pattern cured layer is detached with the bottom of container 11 by Z axis drive system 13.
In certain embodiments, Z axis drive system 13 citing include one end be fixed in component platform 12 fixed link, and
The fixed gear of the other end of fixed link and the rack coordinated with gear.For another example, Z axis drive system 13 includes：Lead screw and rotation
Connect the fixed structure of the lead screw, wherein one end dead joint member platform 12, the other end of the lead screw be screwed in it is described solid
Determine in structure.For another example, Z axis drive system 13 includes：Limiting slot with rack and the mobile bar in limiting slot, the shifting
Lever connecting elements platform 12.
When Z axis drive system 13 drives component platform 12 to decline, typically to by component platform 12 or being attached to structure
Patterning cured layer on part platform 12 drops to the spacing at a distance of 11 bottom of container, one cured layer floor height, is filled in irradiate
Photo-curing material in the spacing.When Z axis drive system 13 drives component platform 12 to rise, consolidate typically to by pattern
Change layer to detach from 11 bottom of container.
Z axis drive system 13 includes driving unit and vertical shift unit, and the driving unit is described vertical for driving
Mobile unit, so that the vertical shift unit drives component platform lifting moving.For example, the driving unit includes driving electricity
Machine.The driving unit is controlled by control instruction.Wherein, the control instruction includes：For indicating component platform up and down
Or the directionality instruction stopped, or even can also include the parameters such as rotating speed/rotating speed acceleration or torque/torsion.So be conducive to
The distance for accurately controlling the rising of vertical shift unit, to realize the accurate adjusting of Z axis.Here, the vertical shift unit is lifted
Example includes fixed link, the fixed biting connecions moving assembly of the other end with fixed link that one end is fixed in component platform 12,
In, the driven moving cell driving of biting connecions moving assembly is to drive fixed link vertical shift, the biting connecions moving assembly to lift
Example is the limit moving assembly being engaged by dentalation, such as tooth socket and rack assembly, gear and rack assembly.Alternatively, described
Vertical shift unit includes：The positioning moving structure of lead screw and the lead screw that is screwed on, wherein the both ends of the lead screw are rotatably connected in drive
The epitaxial end of moving cell, the positioning moving structure is fixedly attached in component platform 12, which may include rolling
The nut shape structure of pearl and clamping piece.
Control system 15 is connect with optical system 14 and Z axis drive system 13.Wherein, the control system is to include processing
The electronic equipment of device, for example, the control system is computer equipment, embedded device or the integrated circuit for being integrated with CPU
Deng.Control system is connect by interface unit with optical system and Z axis drive system.The interface unit is according to the dress connected
It sets and determines its interface type comprising but be not limited to：Universal Serial Interface, video interface, industry control interface etc..For example, described
Interface unit includes：USB interface, HDMI interface and RS232 interface, wherein USB interface and RS232 interface have multiple, USB
Interface can connect human-computer interaction device etc., RS232 interface connecting detection device and Z axis drive system, and HDMI interface connects optics
System.
Here, the control system 15 enables optical system 14 to container 11 before a print job starts or after the completion
Interior radiated light energy in bottom surface to manufacture a cured layer.The cured layer covering 3D printing equipment last time print job is printed
The drop shadow spread of object, so that residue of the removal in 11 bottom surface of container when cured layer self-induced transparency bottom surface detaches.
Wherein, a print job refers to when using 3D printing equipment printing objects, and optical system is to container bottom
Photo-curing material is irradiated to form the first layer pattern cured layer, and the first layer pattern cured layer is attached on panels,
Panels rise movement under the drive of Z axis drive system so that the pattern cured layer is detached from container bottom, is then declined
The panels to fill photo-curing material to be solidified between the container bottom and the first layer pattern cured layer, again according to
It penetrates to obtain being attached to the second layer pattern cured layer on the first layer pattern cured layer, and so on, by repeatedly filling, irradiating
And lock out operation, each cured layer is accumulated on panels to obtain a complete operation process of three-dimension object.
After control system 15 controls optical system 14 and Z axis drive system 13 completes a print job, or at one
Before print job starts, can under the manipulation of technical staff, enable optical system 14 into container 11 radiated light energy in bottom surface
A cured layer is manufactured, manufactured cured layer is intended to remain in container 11 after wrapping last or multiple continuous print job at this time
The residue of bottom, and cured layer is combined into one with residue, such technical staff can be by removing the behaviour of the cured layer
Make to carry secretly residue and remove.
Referring to Fig. 2, Fig. 2 is shown as the structural schematic diagram of the 3D printing equipment of the application in another embodiment, such as
Shown in figure, 3D printing equipment include container 11, component platform 12, Z axis drive system 13, optical system 14, control system 15 with
And human-computer interaction device 16.Human-computer interaction device 16 is connected with control system 15.For example, control system 15 can be for example, by
USB interface connects human-computer interaction device 16.
Wherein, user can be input operation instruction by human-computer interaction device 16, and then, control system 15 is based on the behaviour
Make instruction control optical system 14 into container 11 radiated light energy with bottom surface manufacture a cured layer.Wherein, the man-machine friendship
Mutually device includes but not limited to：Touch screen, display, mouse and keyboard, voice input/output module, drawing board input terminal, machinery are pressed
Button etc..For example, user can control optical system by keyboard input radiation parameter, control system based on the radiation parameter inputted
It unites and radiates certain light energy into container with the cured layer needed for the manufacture of bottom surface.Alternatively, user can be by setting 3D printing
Standby pre-set the corresponding button carries out pressing operation to manufacture the cured layer for removing removal of residue in bottom surface.
In order to make manufactured cured layer wrap bottoms and can be fully erased by residue, technical staff
The control system can empirically be manipulated to limit the irradiation duration and irradiation power of optical system, therefore ensured that manufactured
Cured layer, which is enough to carry residue, to be stripped.However manual operation bring the consumption of photo-curing material with removing residues effect not
Stable problem is likely to occur secondary generation residue, for this purpose, the control system can preset the floor height of cured layer.Institute
The floor height of the cured layer of manufacture is typically larger than the floor height of pattern cured layer manufactured when operation.Here, manufactured cured layer
Floor height and the energy density for the light energy that optical system is radiated, radiation duration and used photo-curing material it is related.Example
Such as, in the case where manufacturing the cured layer of identical floor height, intensity of illumination is bigger, and required light application time is shorter；Light application time is got over
Long, required intensity of illumination is smaller.For this purpose, in some instances, the radiation parameter of light energy of the control system based on pre-configuration
Optical system radiated light energy is controlled to manufacture the cured layer of default floor height.Wherein, the radiation parameter of light energy can dispatch from the factory
Preceding setting can also be inputted by user and is configured.For example, light energy can be arranged based on experience in technical staff before manufacture
Radiation parameter and corresponding mechanical button is arranged according to the radiation parameter, user only needs to press corresponding mechanical button
Operation can manufacture cured layer in bottom surface.For another example, user can pass through human-computer interaction device input radiation parameter such as intensity of illumination
And light irradiation time, control system based on inputted radiation parameter control optical system radiated into container certain light energy with
Cured layer needed for the manufacture of bottom surface.For another example, the control system determines photo-curing material input by user according to a correspondence
Corresponding exposure molding parameter and mechanical parameters etc., and determine that radiation is preset needed for floor height according to obtained parameter
Radiation parameter, and then control optical system according to identified radiation parameter.
In another example, floor height control optical system of the control system based on the preset cured layer radiates luminous energy
Amount is to manufacture the cured layer of corresponding floor height.Wherein, the floor height can be setting before the manufacture of 3D printing equipment, or by technology
Personnel's input etc..The control system can push away to obtain corresponding radiation parameter according to default floor height.For example, technical staff utilizes
The human-computer interaction device input layer high level of 3D printing equipment, or even it is also an option that photo-curing material option, control system is through meter
It calculates and is determined as curing corresponding photo-curing material into the radiation parameter corresponding to required input floor height.
In another example, model file that the floor height can also be provided by preprocessing system is imported into 3D and beats
In printing apparatus.Wherein, the preprocessing system is used to a 3D models being supported place (such as the threedimensional model made using CAD)
A model file is formed after reason and layered shaping, the floor height and corresponding cured layer attribute information are arranged in institute technical staff
It states in model file, 3D printing equipment executes the successively manufacture of three-dimension object according to the model file received, then according to described in
Cured layer attribute information manufactures the cured layer of corresponding floor height after or before print job.
In practical applications, control system also controls the contour shape of the manufactured cured layer of optical system limitation and (schemes
Case) so that manufactured cured layer covers the drop shadow spread of 3D printing equipment last time print job institute printing objects.Its
In, the pattern of the cured layer can be according to the drop shadow spread of the three-dimension object manufactured by last operation or continuous repeatedly operation
And it determines.In some instances, the three-dimension object that control system record manufactures every time container bottoms manufacture range (i.e.
The drop shadow spread of manufactured three-dimension object), and formed in accumulation of the manufacture based on drop shadow spread before this of print job gap
The cured layer of pattern, to wrap the residue formed in manufacturing process before this in cured layer, so that technical staff goes
It removes.In another example, preprocessing system can be determining residual for removing container bottoms according to the drop shadow spread of 3D component models
The pattern of the cured layer stayed, and the pattern of the cured layer and floor height are arranged on the text of the model comprising 3D component models together
In part, complete 3D component models print job after, control system based in the 3D component models file pattern and
Floor height control optical system into container radiated light energy come bottom surface manufacture a cured layer to remove removal of residue.
It is disposably removed in order to ensure the residue at drop shadow spread edge, the coverage area of the cured layer is slightly larger than this
The drop shadow spread of each three-dimension object of preceding manufacture.It should be noted that it is to be understood by the skilled artisans that either control system or preceding
Processing system can be realized residual to drop shadow spread edge by using the mode that the drop shadow spread of three-dimension object or model amplifies
Stay the covering treatment of object.It is no longer described in detail one by one herein.For example, if manufactured object is projected as circular ring type, can be arranged solid
The pattern for changing layer is circular ring type, and the annular diameters that solidification layer pattern is arranged are less than the annular diameters of projection and the outer shroud of pattern
Diameter is more than the outer annular diameter of projection so that the drop shadow spread of the manufactured manufactured object of cured layer covering.For another example, if it is made
Divine force that created the universe body is projected as polygon, then the pattern that cured layer can be arranged is corresponding polygon, and the figure of cured layer is arranged
Each polygon while with projection of case it is each while parallel and cured layer pattern each back gauge polygon center at a distance from be more than and throw
The distance at each back gauge polygon center of the polygon of shadow so that pattern range covers drop shadow spread.For another example, if manufactured object
Be projected as polygon, then, and can be arranged cured layer pattern be circle, and be arranged circular diameter be more than projection it is polygon
The maximum distance on the centre-to-centre spacing vertex of shape so that pattern range covers drop shadow spread.It should be noted that the application is according to projection
The pattern that cured layer is arranged is not limited to this, those skilled in the art can the shape based on projection cured layer figure is arbitrarily set
Case, such as it can also be directed to circular ring type projection setting circular pattern, according to the symmetric relation setting ellipse of polygon projection, three
The patterns such as angular, quadrangle, as long as pattern range can cover drop shadow spread.
Another easier mode is, cured layer is arranged in radiation breadth of the control system based on optical system
Pattern, that is, cured layer coverage area, to realize easy to operation, simple flow purpose.The i.e. described control system controls optics
System manufactures a cured layer in full width face.Technical staff can remove the cured layer to realize that removal container bottoms are residual using tool
Stay the purpose of object.
In addition, generating secondary retained object in order to prevent, at least one angle of the solidification layer pattern may be deformed to arc, this
It is that arc stress is evenly compared to angle stress during stripping that sample, which is done,.
For the cured layer manufactured, technical staff can be shelled cured layer from container bottom by means of tools such as tweezers
From.For the ease of manual operation, control system enable optical system into container radiated light energy with bottom surface manufacture one solidification
Before layer, should the component platform in 3D printing equipment be removed into the distance range of manufactured cured layer to prevent cured layer attached first
It and is not easy to subsequent artificial lock out operation in component platform.For example, user can control Z axis by human-computer interaction device
Component platform is removed the distance range of manufactured cured layer by drive system.For another example, control system is receiving manufacture for going
When the control instruction of the cured layer of removal of residue, first control Z axis drive system by component platform remove manufactured cured layer away from
From range, then controls optical system and carry out light radiation.
In another embodiment, the cured layer manufactured is automatically taken out by 3D printing equipment.For this purpose, control system control
Cured layer is attached in component platform by Z axis drive system processed, and will be accompanying by component platform under the drive of Z axis drive system
Cured layer self-induced transparency bottom surface detach to remove the residue in container bottoms.In one example, start in a print job
Preceding or after the completion, control system controls the spacing of Z axis drive system adjustment member platform and container bottom in container bottom first
The photo-curing material of floor height is preset in portion's filling.Then, control system enable optical system into container radiated light energy in bottom surface
The cured layer of floor height and pattern is preset in manufacture.Finally, control system control Z axis drive system drives component platform to rise so that
The cured layer is detached with the bottom of container.Above-mentioned control process can be operated by human-computer interaction device.
However in practical applications, not necessarily each print job all can there are residues in container bottoms.To reduce
Manufacture cured layer and the cost that consumes, control system can first detection container bottom surface whether be stained with residue, it is residual having detected
Cured layer is manufactured in bottom surface and remove removal of residue again in the case of staying object.
In one embodiment, 3D printing equipment may include squeegee devices, and the squeegee devices include that setting is being held
The scraping blade ontology of device bottom surface and the power sensing unit in scraping blade ontology is set.In a kind of automation scheme, the squeegee devices
Further include moving assembly, control system controls the moving assembly and moves so that scraping blade ontology streaks container bottoms.For example, described
Moving assembly is arranged in the container, and in a kind of example, moving assembly includes guide rail, synchronous belt mechanism and mounting rail,
Wherein, moving assembly is moved along guide rail by the way that synchronous belt mechanism drives, scraping blade ontology by buckle etc. modes removably across
It is connected on mounting rail and is contacted with container bottom.In another example, moving assembly includes guide rail and moving parts, wherein
Moving parts can move on guide rail, scraping blade ontology by buckle etc. modes be removably connected across each moving parts and with appearance
Device bottom contacts.The guide rail is exemplified as track, and the moving parts corresponds to the sliding block that citing is slidably installed on track.The sliding block
Motor control driven is moved in respective track.The driving motor includes but not limited to：Stepper motor, servo motor, straight line
Motor etc. in various embodiments, can also use telescopic cylinder control that sliding block can be driven to be moved in respective track certainly
It is dynamic.After a print job or before starting, control system controls squeegee devices and moves scraping blade ontology, when scraping blade ontology
When being moved to residue, the deformation by resistance of scraping blade ontology causes power caused by power sensing units sense to the deformation and defeated
Output induction information, the control system determines that container bottoms have residue based on the power induction information received, and then controls
Z axis drive system and optical system processed manufacture and remove cured layer to remove removal of residue.Wherein, the power sensing unit refers to energy
It is enough that mechanical quantity is converted to sensor, such as resistance strain gage, pressure sensor of electric signal etc..
In another embodiment, 3D printing equipment further includes filming apparatus, and the filming apparatus includes for shooting
The detection image of bottom surface, the control system determine whether the container bottoms are stained with residual by analyzing the detection image
Object.In certain embodiments, filming apparatus is arranged below container, and filming apparatus is by shooting bottom surface image and exporting to control
System, control system are analyzed to determine whether container bottoms are stained with residual by such as gray scale to captured image
Object.In one example, after a print job or before starting, control system controls filming apparatus and absorbs container bottoms
Detection image and carry out gray analysis, however, it is determined that the intensity profile in detection image meets the distribution characteristics of noresidue, then
Show that container bottoms do not have residue, conversely, then showing that container bottoms are stained with residue；When determination has residue, the control
System processed controls Z axis drive system in turn and optical system manufactures and removes cured layer to remove removal of residue.Furthermore, it is possible to pass through
Human-computer interaction device is operated to control filming apparatus and control system.
However, above-mentioned shooting bottom surface image be only applicable in a manner of determining residue to be identified by gray scale it is transparent or half
Transparent material to be solidified.For opaque material to be solidified, residue can not be determined whether there is through the above way.
Thus, in another embodiment, 3D printing equipment can also include squeegee devices and filming apparatus.Wherein, squeegee devices
Including the scraping blade ontology in container bottoms is arranged, scraping blade ontology is streaked in container bottoms by above-mentioned moving assembly and exposes institute
The base surface area streaked.Filming apparatus is arranged below container, for shooting the detection image for including the base surface area exposed.
Control system connects squeegee devices and filming apparatus for example, by interface unit.After a print job or start it
Before, control system control squeegee devices streak container bottoms so that the region streaked is exposed, and control shooting dress
Shot detection image is set, then whether is determined in exposed region comprising isolated by being analyzed detection image
Dark space, if so, showing that container bottoms do not have residue, conversely, then showing that container bottoms are stained with residue；When determination has residual
When object, the control system controls Z axis drive system in turn and optical system manufactures and removes cured layer to remove removal of residue.This
Outside, above-mentioned control can be realized by human-computer interaction device.
In one implementation, for example, before a print job starts, whether user glues detection container bottom surface first
There is residue.In a kind of example, filming apparatus of the user by human-computer interaction device to squeegee devices, below container with
And control system is controlled, control squeegee devices streak container bottoms to be exposed the region streaked, control shooting
Device shot detection image, control control system detection image is analyzed with determine in exposed region whether include
Isolated dark space simultaneously shows analysis result by human-computer interaction device to user.Determining the case where container bottoms are stained with residue
Under, user controls Z axis drive system by human-computer interaction device and component platform is removed the required distance range for manufacturing cured layer
And for example optical system is enabled to be based on out by pressing pre-set the corresponding button in 3D printing equipment by human-computer interaction device
The radiation parameter being arranged before factory into container radiated light energy to manufacture the cured layer in bottom surface.After cured layer to be formed,
User is detached the cured layer for wrapping residue from transparent bottom surface using tweezers, to realize the mesh of removal container bottoms residue
's.
The application also provides a kind of control system, referring to Fig. 3, the control system that Fig. 3 is shown as the application is implemented one
Structural schematic diagram in mode, as shown, control system includes storage unit 31 and processing unit 32.Wherein, storage unit
31 for storing at least one program.The storage unit includes nonvolatile memory and system bus.Wherein, described non-easy
The property lost memory is exemplified as solid state disk or USB flash disk etc..The system bus is used to nonvolatile memory and CPU being connected to one
It rises, wherein CPU can be integrated in the memory unit, or separately encapsulated with storage unit and deposited with non-volatile by system bus
Reservoir connects.
Processing unit 32 is connected with storage unit 31.The processing unit includes：CPU is integrated with the chip of CPU, can compile
At least one of journey logical device (FPGA) and multi-core processor.The processing unit further includes that memory, register etc. are used for
The memory of interim storage data.The processing unit is for reading at least one program to execute control as described below
Method.
The application also provides a kind of control method, and the control method is applied to the 3D printing equipment exposed based on bottom surface.
Wherein, the 3D printing equipment includes the container for having transparent bottom surface, and the container is for holding photo-curing material to be formed.
The photo-curing material includes any liquid material for being easy to photocuring, and citing includes：Light-cured resin liquid, or be doped with and add
Add the resin liquid etc. of the mixing materials such as agent, pigment, dyestuff.The container can be whole clearing or only container bottom is transparent.Example
Such as, the container is glass container, and chamber wall is sticked extinction paper (such as black thin film or black paper), is being thrown to reduce
The solidification of photo-curing material is interfered due to light scattering during shadow.
The 3D printing equipment further includes the optical system set on container transparent subjacent.The optical system, which is located at, to be held
Below device and penetrate bottom surface radiated light energy into container.For example, the optical system may include laser emitter, lens
Group, galvanometer group and controller.Wherein, the energy of the controlled adjustment outgoing laser beam of the laser emitter, for example, the laser
The laser beam of the controlled transmitting predetermined power of transmitter and stopping emit the laser beam, and for another example, the laser emitter is controlled
Raising laser beam power and reduce laser beam power.The lens group is located at laser emitter light emission side, for adjusting
The focal position of the whole laser beam sent out by laser emitter.The galvanometer group is located at the light emission side of lens group, to according to institute
Receiving slice figure makes laser beam be scanned in the two-dimensional space of container bottom, and the photo-curing material through laser beam flying is cured
At corresponding pattern cured layer.Wherein, the slice figure is to be in advance based on 3D component models along Z-direction (i.e. along height side
To) carry out transversal division obtained from, be formed by cross-sectional layer and formed by 3D component models in every adjacent transversal division
The slice figure that profile is sketched the contours, in the case where the cross-sectional layer is sufficiently thin, we assert transversal in the cross-sectional layer
The contour line of surface and lower cross section surface is consistent.
Alternatively, the optical system can be projection arrangement.For example, the projection arrangement includes light source, dmd chip, control
Device processed and memory module.Wherein, the slice for the 3D component models layering that storage layered image describes in the memory module
Figure.Light source is irradiated to container bottoms by dmd chip after the control signal for receiving controller.Wherein, dmd chip appearance
Seem an only small pieces mirror, is encapsulated in the confined space that metal is formed with glass, in fact, this face mirror is by counting
100000 so a micro mirror up to a million formed, as soon as each micro mirror represents a pixel, the image projected is by these pixels
It is constituted.Dmd chip can be briefly described semiconductor optical switch and micromirror as corresponding pixel points, and the controller passes through
Each photoswitch carrys out each microwafer reflected light of Enable/Disable in control dmd chip, thus by corresponding layered image by the saturating of container
Bright bottom is irradiated on photo-curing material so that the photo-curing material of correspondence image shape is cured, patterned solid to obtain
Change layer.
In addition, 3D printing equipment further includes component platform and Z axis drive system.Wherein component platform is for adhering in container
The three-dimension object for being radiated and manufactured by optical system, to accumulate to form 3D components via the pattern cured layer.Specifically, institute
It states component platform and is exemplified as panels.The component platform usually to be located at container bottoms as initial position, is successively accumulated in institute
Cured each pattern cured layer on container bottoms is stated, to obtain corresponding three-dimension object.Z axis drive system connects with component platform
It connects, in order to accumulate each pattern cured layer, under the drive of Z axis drive system, component platform constantly adjusts between container bottom
Component platform is driven to rise so that institute away to fill photo-curing material to be solidified in container bottom, and by Z axis drive system
Pattern cured layer is stated to detach with the bottom of container.
Referring to Fig. 4, Fig. 4 is shown as the flow chart of the control method of the application in one embodiment, as shown, control
Method processed includes step S10 and step S20.
In step slo, before a print job starts or after the completion, optical system radiated light energy into container is enabled
To manufacture a cured layer in bottom surface.
Wherein, a print job refers to when using 3D printing equipment printing objects, and optical system is to container bottom
Photo-curing material is irradiated to form the first layer pattern cured layer, and the first layer pattern cured layer is attached on panels,
Panels rise movement under the drive of Z axis drive system so that the pattern cured layer is detached from container bottom, is then declined
The panels to fill photo-curing material to be solidified between the container bottom and the first layer pattern cured layer, again according to
It penetrates to obtain being attached to the second layer pattern cured layer on the first layer pattern cured layer, and so on, by repeatedly filling, irradiating
And lock out operation, each cured layer is accumulated on panels to obtain a complete operation process of three-dimension object.In addition, described
Cured layer covers the drop shadow spread of object manufactured by 3D printing equipment last time print job.
In step S20, cured layer is detached from container bottoms.
Due to the drop shadow spread of object manufactured by cured layer covering 3D printing equipment last time print job, thus by institute
State the residue that can be removed when cured layer is detached from the transparent bottom surface in container bottoms.
The control method can be realized by the control system in 3D printing equipment.Wherein, the control system is
Include the electronic equipment of processor, for example, the control system is computer equipment, embedded device or the collection for being integrated with CPU
At circuit etc..Control system is connect by interface unit with optical system and Z axis drive system.The interface unit is according to connecting
The device that connects and determine its interface type comprising but be not limited to：Universal Serial Interface, video interface, industry control interface etc..Example
Such as, the interface unit includes：USB interface, HDMI interface and RS232 interface, wherein USB interface and RS232 interface have more
A, USB interface can connect human-computer interaction device etc., RS232 interface connecting detection device and Z axis drive system, and HDMI interface connects
Connect optical system.
Control system controls optical system and Z axis drive system before a print job starts or one printing of completion is made
After industry, can under the manipulation of technical staff, enable optical system into container radiated light energy with bottom surface manufacture a cured layer, this
When manufactured cured layer be intended to wrap last or repeatedly after continuous print job remain in the residue of container bottom, and make
It obtains cured layer to be combined into one with residue, such technical staff can carry residue clearly secretly by removing the operation of the cured layer
It removes.
In a kind of embodiment, enabled in step S10 optical system into container radiated light energy with bottom surface manufacture one
The step of cured layer includes：Based on user triggering operational order control optical system into container radiated light energy in bottom surface
Manufacture a cured layer.Wherein, user can be input operation instruction by human-computer interaction device to control optical system into container
Radiated light energy in bottom surface to manufacture a cured layer.Wherein, the human-computer interaction device includes but not limited to：Touch screen, display,
Mouse and keyboard, voice input/output module, drawing board input terminal, mechanical button etc..For example, user can input spoke by keyboard
Parameter is penetrated, control system radiates certain light energy into container in bottom surface based on the radiation parameter control optical system inputted
Cured layer needed for manufacture.Alternatively, user can be by carrying out pressing behaviour to pre-set the corresponding button in 3D printing equipment
Make to manufacture the cured layer for removing removal of residue in bottom surface.
In order to make manufactured cured layer wrap bottoms and can be fully erased by residue, technical staff
The irradiation duration and irradiation power that optical system can empirically be limited therefore ensure that manufactured cured layer is enough to carry residual
Object is stripped.However the problem that manual operation brings the consumption of photo-curing material unstable with removing residues effect is likely to occur
Secondary generation residue, for this reason, it may be necessary to which the floor height to cured layer is preset.Can by control system to the floor height of cured layer into
Row is default.The floor height of manufactured cured layer is typically larger than the floor height of pattern cured layer manufactured when operation.Here, manufactured
Cured layer floor height and optical system energy density, radiation duration and the used photo-curing material of the light energy that are radiated
It is related.For example, in the case where manufacturing the cured layer of identical floor height, intensity of illumination is bigger, and required light application time is shorter；Illumination
Time is longer, and required intensity of illumination is smaller.For this purpose, in some instances, manufactured cured layer floor height is based on pre-configuration
Light energy radiation parameter and determination, in certain embodiments, the radiation of light energy of the control system based on pre-configuration is joined
Number control optical system radiated light energy is to manufacture the cured layer of default floor height.Wherein, the radiation parameter of light energy can go out
It is arranged before factory, can also be inputted and be configured by user.For example, luminous energy can be arranged based on experience in technical staff before manufacture
Simultaneously corresponding mechanical button is arranged according to the radiation parameter in the radiation parameter of amount, user only need to corresponding mechanical button carry out by
Press operation can manufacture cured layer in bottom surface.For another example, user can be strong by such as illumination of human-computer interaction device input radiation parameter
Degree and light irradiation time, control system based on inputted radiation parameter control optical system radiated into container certain light energy with
In the cured layer needed for the manufacture of bottom surface.For another example, the control system determines photocuring material input by user according to a correspondence
The corresponding exposure molding parameter of material and mechanical parameters etc., and determine that radiation is preset needed for floor height according to obtained parameter
Radiation parameter, and then according to identified radiation parameter control optical system.
In another example, manufactured cured layer floor height is determined based on the floor height of the preset cured layer
, in certain embodiments, control system based on the preset cured layer floor height control optical system radiated light energy with
Manufacture the cured layer of corresponding floor height.Wherein, the floor height can be setting before the manufacture of 3D printing equipment, or by technical staff
Input etc..The control system can push away to obtain corresponding radiation parameter according to default floor height.For example, technical staff is beaten using 3D
The human-computer interaction device input layer high level of printing apparatus, or even it is also an option that photo-curing material option, control system is computed really
It is set to the radiation parameter cured corresponding photo-curing material corresponding to required input floor height.
In another example, model file that the floor height can also be provided by preprocessing system is imported into 3D and beats
In printing apparatus.Wherein, the preprocessing system is used to a 3D models being supported place (such as the threedimensional model made using CAD)
A model file is formed after reason and layered shaping, the floor height and corresponding cured layer attribute information are arranged in institute technical staff
It states in model file, 3D printing equipment executes the successively manufacture of three-dimension object according to the model file received, then according to described in
Cured layer attribute information manufactures the cured layer of corresponding floor height after or before print job.
In practical applications, also need control optical system to limit the contour shape (i.e. pattern) of manufactured cured layer,
So that manufactured cured layer covers the drop shadow spread of 3D printing equipment last time print job institute printing objects.Wherein,
The pattern of the cured layer can according to the three-dimension object manufactured by last operation or continuous repeatedly operation drop shadow spread and
It determines.In some instances, the pattern of manufactured cured layer is made based on the 3D printing equipment last time print job
The drop shadow spread of divine force that created the universe body and determination, in certain embodiments, the three-dimension object that control system record manufactures every time is in container
The manufacture range (i.e. the drop shadow spread of manufactured three-dimension object) of bottom surface, and manufacture is based on this front projection in print job gap
The cured layer of the formed pattern of accumulation of range, to wrap the residue formed in manufacturing process before this in cured layer
In, so that technical staff removes.In another example, preprocessing system can determine use according to the drop shadow spread of 3D component models
In the pattern of the removal remaining cured layer of container bottoms, and the pattern of the cured layer and floor height are arranged on together comprising 3D
In the model file of component model, after the print job for completing 3D component models, control system is based on the 3D component models
Pattern in file and floor height control optical system radiated light energy into container and in bottom surface manufacture a cured layer to remove
Residue.
It is disposably removed in order to ensure the residue at drop shadow spread edge, the coverage area of the cured layer is slightly larger than this
The drop shadow spread of each three-dimension object of preceding manufacture.It should be noted that it is to be understood by the skilled artisans that either control system or preceding
Processing system can be realized residual to drop shadow spread edge by using the mode that the drop shadow spread of three-dimension object or model amplifies
Stay the covering treatment of object.It is no longer described in detail one by one herein.For example, if manufactured object is projected as circular ring type, can be arranged solid
The pattern for changing layer is circular ring type, and the annular diameters that solidification layer pattern is arranged are less than the annular diameters of projection and the outer shroud of pattern
Diameter is more than the outer annular diameter of projection so that the drop shadow spread of the manufactured manufactured object of cured layer covering.For another example, if it is made
Divine force that created the universe body is projected as polygon, then the pattern that cured layer can be arranged is corresponding polygon, and the figure of cured layer is arranged
Each polygon while with projection of case it is each while parallel and cured layer pattern each back gauge polygon center at a distance from be more than and throw
The distance at each back gauge polygon center of the polygon of shadow so that pattern range covers drop shadow spread.For another example, if manufactured object
Be projected as polygon, then, and can be arranged cured layer pattern be circle, and be arranged circular diameter be more than projection it is polygon
The maximum distance on the centre-to-centre spacing vertex of shape so that pattern range covers drop shadow spread.It should be noted that the application is according to projection
The pattern that cured layer is arranged is not limited to this, those skilled in the art can the shape based on projection cured layer figure is arbitrarily set
Case, such as it can also be directed to circular ring type projection setting circular pattern, according to the symmetric relation setting ellipse of polygon projection, three
The patterns such as angular, quadrangle, as long as pattern range can cover drop shadow spread.
Another easier mode is that the pattern of manufactured cured layer is based on optics in the 3D printing equipment
The radiation breadth of system and determination, in certain embodiments, radiation breadth of the control system based on optical system is solid to be arranged
The coverage area for changing pattern, that is, cured layer of layer, to realize easy to operation, simple flow purpose.The i.e. described control system control
Optical system manufactures a cured layer in full width face.Technical staff can remove the cured layer to realize removal container bottom using tool
The purpose of face residue.
In addition, generating secondary retained object in order to prevent, at least one angle of manufactured cured layer is arc-shaped, and doing so is
Arc stress is evenly compared to angle stress during stripping.
For the cured layer manufactured, for step S20, technical staff can by means of the tools such as tweezers by cured layer from
Container bottom is removed.In addition, for the ease of manual operation, the control method further includes that optical system is being enabled to be radiated into container
Component platform in 3D printing equipment before bottom surface manufactures a cured layer, to be removed the distance of manufactured cured layer by light energy
Range is to prevent cured layer to be attached in component platform the step of being not easy to subsequent artificial lock out operation.For example, user can be with
The distance range of manufactured cured layer is removed to control Z axis drive system by component platform by human-computer interaction device.For another example, it controls
System processed first controls Z axis drive system by component when receiving the control instruction of cured layer of the manufacture for removing removal of residue
Platform removes the distance range of manufactured cured layer, then controls optical system and carry out light radiation.
In another embodiment, for step S20, the cured layer manufactured is automatically taken out by 3D printing equipment.For
This, cured layer is attached in component platform by control system control Z axis drive system, and will under the drive of Z axis drive system
Cured layer self-induced transparency bottom surface accompanying by component platform is detached to remove the residue in container bottoms.In one example, one
Before a print job starts or after the completion, control system controls Z axis drive system adjustment member platform and container bottom first
Spacing presets the photo-curing material of floor height to be filled in container bottom.Then, control system enables optical system be radiated into container
Light energy presets the cured layer of floor height and pattern to be manufactured in bottom surface.Finally, control system control Z axis drive system drives component
Platform rises so that the cured layer is detached with the bottom of container.Above-mentioned control process can by human-computer interaction device into
Row operation.
However in practical applications, not necessarily each print job all can there are residues in container bottoms.To reduce
The cost for manufacturing cured layer and consuming, the control method further include the step whether the detection container bottoms are stained with residue
Suddenly.In certain embodiments, control system can first detection container bottom surface whether be stained with residue, detecting residue
In the case of manufactured in bottom surface cured layer and remove removal of residue again.
In one embodiment, the step of whether detection container bottom surface is stained with residue include：Control is located at the appearance
The scraping blade ontology of device bottom surface streaks container bottoms, and determines the container bottom based on the power induction information detected during streaking
Whether face is stained with residue.
In certain embodiments, 3D printing equipment may include squeegee devices, and the squeegee devices include to be arranged in container
The scraping blade ontology of bottom surface and the power sensing unit in scraping blade ontology is set.In a kind of automation scheme, the squeegee devices are also
Including moving assembly, control system controls the moving assembly and moves so that scraping blade ontology streaks container bottoms.For example, the shifting
Dynamic component is arranged in the container, and in a kind of example, moving assembly includes guide rail, synchronous belt mechanism and mounting rail,
In, moving assembly is moved along guide rail by the way that synchronous belt mechanism drives, and scraping blade ontology is removably bridged by the modes such as buckling
It is contacted on mounting rail and with container bottom.In another example, moving assembly includes guide rail and moving parts, wherein is moved
Dynamic component can move on guide rail, and scraping blade ontology is removably connected across each moving parts and and container by modes such as buckles
Bottom contacts.The guide rail is exemplified as track, and the moving parts corresponds to the sliding block that citing is slidably installed on track.The sliding block by
Driving motor control is moved in respective track.The driving motor includes but not limited to：Stepper motor, servo motor, straight-line electric
Machine etc. in various embodiments, can also use telescopic cylinder control that sliding block can be driven to be moved in respective track certainly.
After a print job or before starting, control system controls squeegee devices and moves scraping blade ontology, when scraping blade ontology moves
When moving to residue, the deformation by resistance of scraping blade ontology causes power caused by power sensing units sense to the deformation and exports
Power induction information, the control system determines that container bottoms have residue based on the power induction information received, and then controls Z
Axis drive system and optical system manufacture and remove cured layer to remove removal of residue.Wherein, the power sensing unit is to refer to
Mechanical quantity is converted to sensor of electric signal, such as resistance strain gage, pressure sensor etc..
In another embodiment, the step of whether the detection container bottom surface is stained with residue include：Shooting includes
The detection image of institute's container bottoms determines whether the container bottoms are stained with residue by analyzing the detection image.
In certain embodiments, 3D printing equipment further includes filming apparatus, and the filming apparatus includes bottom surface for shooting
Detection image, the control system determines whether the container bottoms are stained with residue by analyzing the detection image.
In some embodiments, filming apparatus is arranged below container, and filming apparatus is by shooting bottom surface image and exports to control system,
Control system is analyzed to determine whether container bottoms are stained with residue by such as gray scale to captured image.One
In example, after a print job or before starting, control system controls the detection of filming apparatus intake container bottoms
Image simultaneously carries out gray analysis, however, it is determined that the intensity profile in detection image meets the distribution characteristics of noresidue, then shows to hold
Device bottom surface does not have residue, conversely, then showing that container bottoms are stained with residue；When determination has residue, the control system
And then control Z axis drive system and optical system manufacture and remove cured layer to remove removal of residue.Furthermore, it is possible to pass through man-machine friendship
Mutual device is operated to control filming apparatus and control system.
However, above-mentioned shooting bottom surface image be only applicable in a manner of determining residue to be identified by gray scale it is transparent or half
Transparent material to be solidified.For opaque material to be solidified, residue can not be determined whether there is through the above way.
Thus, in another embodiment, the step of whether the detection container bottom surface is stained with residue, includes：Control is located at described
The scraping blade ontology of container bottoms streaks container bottoms with the base surface area at the streaked place of exposure, and shooting is sudden and violent comprising institute during streaking
The detection image for revealing base surface area determines whether the container bottoms are stained with residue by analyzing the detection image.
In certain embodiments, 3D printing equipment can also include squeegee devices and filming apparatus.Wherein, squeegee devices packet
Containing the scraping blade ontology being arranged in container bottoms, scraping blade ontology is streaked and is exposed in container bottoms by above-mentioned moving assembly and drawn
The base surface area crossed.Filming apparatus is arranged below container, for shooting the detection image for including the base surface area exposed.Control
System processed connects squeegee devices and filming apparatus for example, by interface unit.After a print job or before starting,
Control system control squeegee devices streak container bottoms so that the region streaked is exposed, and control filming apparatus bat
Detection image is taken the photograph, it is then whether dark comprising what is isolated in exposed region to determine by being analyzed detection image
Area, if so, showing that container bottoms do not have residue, conversely, then showing that container bottoms are stained with residue；When determination has residue
When, the control system controls Z axis drive system in turn and optical system manufactures and removes cured layer to remove removal of residue.This
Outside, above-mentioned control can be realized by human-computer interaction device.
Referring to Fig. 5, Fig. 5 is shown as the flow chart of the control method of the application in another embodiment, as shown,
Control method includes step S101, step S102, step S103 and step S104.
In step S101, before a print job starts or after the completion, whether detection container bottom surface is stained with residue.
In one example, 3D printing equipment includes squeegee devices and filming apparatus.Wherein, squeegee devices include that setting is being held
The scraping blade ontology of device bottom surface, scraping blade ontology are streaked in container bottoms by above-mentioned moving assembly and expose streaked bottom surface area
Domain.Filming apparatus is arranged below container, for shooting the detection image for including the base surface area exposed.Control system passes through
Such as interface unit connects squeegee devices and filming apparatus.After a print job or before starting, control system control
Squeegee devices processed streak container bottoms so that the region streaked is exposed, and control filming apparatus shot detection figure
Then whether picture determined in exposed region by being analyzed detection image comprising isolated dark space, if so,
Show that container bottoms do not have residue, conversely, then showing that container bottoms are stained with residue.
In step s 102, the component platform in 3D printing equipment is removed to the distance range of manufactured cured layer.
Wherein, in the case where determining that container bottoms are stained with residue, user can control Z by human-computer interaction device
Component platform is removed the distance range of manufactured cured layer by axis drive system.
In step s 103, enable optical system into container radiated light energy with bottom surface manufacture a cured layer.
Wherein, user can enable optical system be based on for example, by pressing pre-set the corresponding button in 3D printing equipment
The radiation parameter being arranged before manufacture into container radiated light energy to manufacture the cured layer in bottom surface.
In step S104, cured layer is detached from container bottoms.
Wherein, technical staff can be removed cured layer from container bottom by means of tools such as tweezers.
Based on above-mentioned control method, can be remanufactured in the case where detecting that container bottoms are stained with residue cured layer with
Realize reduce manufacture cured layer and the cost consumed and the purpose for removing container bottom residue.
It should be noted that through the above description of the embodiments, those skilled in the art can be understood that
It can be realized to some or all of the application by software and in conjunction with required general hardware platform.Based on this understanding,
The application also provides a kind of storage medium of computer equipment, and the storage medium is stored at least one program, described program
Any control method above-mentioned is executed when being executed by processor.
Based on this understanding, substantially the part that contributes to existing technology can in other words for the technical solution of the application
To be expressed in the form of software products, which may include be stored thereon with machine-executable instruction one
A or multiple machine readable medias, these instructions by computer, computer network or other electronic equipments etc. one or
Multiple machines may make the one or more machine to execute operation according to an embodiment of the present application when executing.Machine readable media
May include, but be not limited to, floppy disk, CD, CD-ROM (compact-disc-read-only memory), magneto-optic disk, ROM (read-only memory),
(electrically erasable is read-only to be deposited by RAM (random access memory), EPROM (Erasable Programmable Read Only Memory EPROM), EEPROM
Reservoir), magnetic or optical card, flash memory or suitable for store machine-executable instruction other kinds of medium/machine readable media.
For example, the data processor of the aforementioned print routine being stored in control device and storage in the data processing apparatus passes through
Storage medium is saved in the storage server that service store is provided.The service store is exemplified as：The stores APP, software
Download site etc..The storage server can be single server, Distributed Services cluster, the server etc. based on cloud framework.
The application can be used in numerous general or special purpose computing system environments or configuration.Such as：Personal computer, service
Device computer, handheld device or portable device, laptop device, multicomputer system, microprocessor-based system, top set
Box, programmable consumer-elcetronics devices, network PC, minicomputer, mainframe computer including any of the above system or equipment
Distributed computing environment etc..
The application can describe in the general context of computer-executable instructions executed by a computer, such as program
Module.Usually, program module includes routines performing specific tasks or implementing specific abstract data types, program, object, group
Part, data structure etc..The application can also be put into practice in a distributed computing environment, in these distributed computing environments, by
Task is executed by the connected remote processing devices of communication network.In a distributed computing environment, program module can be with
In the local and remote computer storage media including storage device.
The principles and effects of the application are only illustrated in above-described embodiment, not for limitation the application.It is any ripe
Know the personage of this technology all can without prejudice to spirit herein and under the scope of, carry out modifications and changes to above-described embodiment.Cause
This, those of ordinary skill in the art is complete without departing from spirit disclosed herein and institute under technological thought such as
At all equivalent modifications or change, should be covered by claims hereof.
Claims (21)
1. a kind of control method is applied to the 3D printing equipment exposed based on bottom surface, wherein the 3D printing equipment includes having
The container of transparent bottom surface and optical system set on the container transparent subjacent, which is characterized in that the control method packet
It includes：Before a print job starts or after the completion, enable the optical system into the container radiated light energy with described
Bottom surface manufactures a cured layer；The cured layer covers the projection model of object manufactured by the 3D printing equipment last time print job
It encloses, so that residue of the removal in the container bottoms when cured layer is detached from the transparent bottom surface.
2. control method according to claim 1, which is characterized in that further comprising the steps of：By the 3D printing equipment
In component platform the step of removing the distance range of manufactured cured layer.
3. control method according to claim 1, which is characterized in that manufactured cured layer floor height is based on pre-configuration
The radiation parameter of light energy and determination or manufactured cured layer floor height be the floor height based on the preset cured layer and
Determining.
4. control method according to claim 1, which is characterized in that the pattern of manufactured cured layer is to be based on the 3D
The drop shadow spread of object manufactured by the print job of printing device last time and the pattern of determination or manufactured cured layer is
Based on optical system in the 3D printing equipment radiation breadth and determination.
5. control method according to claim 1, which is characterized in that at least one angle of manufactured cured layer is in arc
Shape.
6. control method according to claim 1, which is characterized in that described to enable optical system spoke into the container
Penetrate light energy includes to manufacture a cured layer in the bottom surface：Operational order based on user's triggering control the optical system to
Radiated light energy in the bottom surface to manufacture a cured layer in the container.
7. control method according to claim 1, which is characterized in that further include the detection container bottoms whether be stained with it is residual
The step of staying object.
8. control method according to claim 7, which is characterized in that whether the detection container bottom surface is stained with residue
Step includes：Control streaks container bottoms positioned at the scraping blade ontology of the container bottoms, and based on being detected during streak
Power induction information determines whether the container bottoms are stained with residue.
9. control method according to claim 7, which is characterized in that whether the detection container bottom surface is stained with residue
Step includes：Shooting includes the detection image of institute's container bottoms, determines that the container bottoms are by analyzing the detection image
It is no to be stained with residue.
10. control method according to claim 7, which is characterized in that whether the detection container bottom surface is stained with residue
The step of include：Control streaks container bottoms with the bottom surface area at the streaked place of exposure positioned at the scraping blade ontology of the container bottoms
Domain, the detection image that shooting includes exposed base surface area during streaking determine the appearance by analyzing the detection image
Whether device bottom surface is stained with residue.
11. a kind of 3D printing equipment, which is characterized in that including：
Container with transparent bottom surface holds photo-curing material to be formed；
Optical system is located at below the container and penetrates bottom surface radiated light energy into container；
Component platform, for adhering in the container three-dimension object for being radiated and manufactured by optical system；
Z axis drive system, is connected with component platform, for driving the component platform vertical shift；
Control system is connect with the optical system and Z axis drive system, for before a print job starts or completing
Afterwards, enable the optical system into the container radiated light energy with the bottom surface manufacture a cured layer；The cured layer covers
The drop shadow spread of 3D printing equipment last time print job institute printing objects is covered, so that the cured layer is from the clear bottom
Residue of the removal in container bottoms when face detaches.
12. 3D printing equipment according to claim 11, which is characterized in that the control system is additionally operable to beat the 3D
Component platform in printing apparatus removes the distance range of manufactured cured layer；Or
The control system be additionally operable to control the Z axis drive system by the cured layer from the transparent bottom surface separation to remove
In the residue of the container bottoms.
13. 3D printing equipment according to claim 11, which is characterized in that luminous energy of the control system based on pre-configuration
The radiation parameter of amount controls the optical system radiated light energy to manufacture the cured layer of default floor height；Or
Floor height of the control system based on the preset cured layer controls the optical system radiated light energy to manufacture phase
Answer the cured layer of floor height.
14. 3D printing equipment according to claim 11, which is characterized in that the control system is set based on the 3D printing
For the drop shadow spread of object manufactured by last time print job, the pattern of determination, controls the optical system radiated light energy system
Make corresponding cured layer；Or
Radiation breadth of the control system based on the optical system controls the optical system radiated light energy to manufacture
State cured layer.
15. 3D printing equipment according to claim 11, which is characterized in that further include the people being connected with the control system
Machine interactive device；The operational order that the control system is generated based on human-computer interaction device described in user's operation, described in control
Optical system into the container radiated light energy with the bottom surface manufacture a cured layer.
16. 3D printing equipment according to claim 11, which is characterized in that the control system is additionally operable to detect the appearance
Whether device bottom surface is stained with residue.
17. 3D printing equipment according to claim 16, which is characterized in that further include：Squeegee devices, including being arranged in institute
It states the scraping blade ontology of container bottoms and the power sensing unit in the scraping blade ontology is set；Wherein, the control system controls institute
It states squeegee devices and streaks the container bottoms, and it is residual based on acquired power induction information to determine whether the container bottoms are stained with
Stay object.
18. 3D printing equipment according to claim 16, which is characterized in that further include：
Squeegee devices are drawn including the scraping blade ontology in the container bottoms is arranged for exposed during streaking container bottoms
The base surface area crossed；
Filming apparatus, for shooting the detection image for including exposed base surface area；
The control system connects the squeegee devices and filming apparatus, and the container bottom is streaked for controlling the squeegee devices
Face controls the filming apparatus shot detection image, and by detecting whether the detection image determines the container bottoms
It is stained with residue.
19. 3D printing equipment according to claim 16, which is characterized in that further include filming apparatus, include for shooting
The detection image of the bottom surface；
The control system determines whether the container bottoms are stained with residue by analyzing the detection image.
20. a kind of control system, which is characterized in that including：
Storage unit, for storing at least one program；
Processing unit is connected with the storage unit, for reading at least one program to execute such as claim 1-10
In any control method.
21. a kind of storage medium of computer equipment, which is characterized in that be stored at least one program, described program is handled
The control method as described in any in claim 1-10 is executed when device executes.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810180091.XA CN108381929A (en) | 2018-03-05 | 2018-03-05 | Control method and the 3D printing equipment being applicable in |
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| CN201810180091.XA CN108381929A (en) | 2018-03-05 | 2018-03-05 | Control method and the 3D printing equipment being applicable in |
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Cited By (1)
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| CN113692344A (en) * | 2019-03-15 | 2021-11-23 | 福姆实验室公司 | Hybrid techniques in additive manufacturing and related systems and methods |
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