CN106738904A - A kind of light-initiated quick increasing material manufacturing device and method - Google Patents
A kind of light-initiated quick increasing material manufacturing device and method Download PDFInfo
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- CN106738904A CN106738904A CN201611236861.5A CN201611236861A CN106738904A CN 106738904 A CN106738904 A CN 106738904A CN 201611236861 A CN201611236861 A CN 201611236861A CN 106738904 A CN106738904 A CN 106738904A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
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- 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
- B33Y70/00—Materials specially adapted for additive manufacturing
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
Abstract
The invention discloses the light-initiated quick increasing material manufacturing device and method of one kind, equipment includes powder bed system, triggers light projection system and irradiated with thermal radiation system；Powder bed system includes powder compacting chamber, and the upper end in powder compacting chamber is set in opening, and powder compacting platform is provided with powder compacting chamber, and the lower end of powder compacting platform is provided with powder bed lifting subsystem；Triggering light projection system includes the initiation optical projection device being located above powder compacting platform and the computer system being connected with initiation optical projection device；Irradiated with thermal radiation system includes the infrared source above powder compacting platform.The present invention changes the spectral absorption characteristics of photochromic material in powder for molding so as to change the moulding section of powder for molding to infrared source absorptivity based on initiation light, the temperature of moulding section is set to raise and reach sintering because of absorptive thermal radiation source, such sintering processing is because be to carry out in flakes, sintering velocity faster, also just improves the speed of increasing material manufacturing.
Description
Technical field
The present invention relates to 3D printing technique field, it particularly relates to a kind of light-initiated quick increasing material manufacturing equipment and side
Method.
Background technology
Increases material manufacturing technology, is called and does rapid shaping or 3D printing, by the development of decades, gradually from manufacture
How layout piece, particularly for the industrial production of small lot Custom Prosthesis, improves the shaping speed of increasing material manufacturing to functor transition
Degree is always the heat subject that industry and academia are inquired into.
United States Patent (USP) US5121329 discloses a kind of 3D printing equipment equipped with moveable shower nozzle, and the shower nozzle is by high score
Sub- melt material extrudes filament from head, and is moved with predetermined pattern along " X ", " Y " and " Z " axle, the fusing plastics that will be extruded
Filament buildup is to producing three-dimensional body on basal component.The device characteristic is simple structure, low cost, but due to single
Filament construction three-dimensional body, its shaping speed is slower.
United States Patent (USP) US5204055 discloses a kind of method for manufacturing part, by laying shaping above shaped platform
Powder, then adhesive material is deposited to the selection area of layer of powder material, solidifies the powder-stuck to be molded, and
The process is successively repeated until completing the whole forming process of three-dimensional body.It improves shaping speed, but will be viscous
Mixture material deposits to the process of layer of powder material generally by the way of inkjet printing, and each layer needs for ink jet-print head
Multipass is completed, and adds profiled member prepared by adhesive means in loose structure through the powder for molding, and intensity is relatively low.
The content of the invention
It is an object of the invention to propose a kind of light-initiated quick increasing material manufacturing device and method, with overcoming current technology
The above mentioned problem of presence.
For achieving the above object, the technical proposal of the invention is realized in this way：
A kind of light-initiated quick increasing material manufacturing equipment, including powder bed system, initiation light projection system and irradiated with thermal radiation system
System；
The powder bed system includes powder compacting chamber, and the upper end in the powder compacting chamber is set in opening, the powder into
Powder compacting platform is provided with die cavity, the lower end of the powder compacting platform is provided with powder bed lifting subsystem；
It is described to trigger light projection system including the initiation optical projection device above powder compacting platform and draw with described
The connected computer system of emission optical projections device；
The irradiated with thermal radiation system includes the infrared source above powder compacting platform.
Further, the powder bed system also includes powder storage chamber, and the upper end of the powder storage chamber also sets in opening
Put, powder pusher is provided with the powder storage chamber, powder laying dress is provided with the upper end open of the powder storage chamber
Put, the upper end open of the powder storage chamber is generally aligned in the same plane with the upper end open in the powder compacting chamber, and by one
It is connected in the rebound in the same plane.
Further, the powder bed system also includes powder preheating device.
Further, the initiation light of the initiation optical projection device is ultraviolet, and the infrared source is infrared emitting
Device.
A kind of method of increasing material manufacturing, comprises the following steps：
1) one layer of original powder for molding containing photochromic material is laid, as initialization layer；
2) using triggering light to irradiate the initialization layer according to the formable layer shape, the initialization layer is initiated light
The original powder for molding for irradiating part there occurs change to the absorptivity of heat radiation；
3) using initialization layer described in heat radiation light irradiation, the initialization layer is initiated the original of light irradiation part
The temperature of powder for molding is raised and sintered, and forms the moulding section of the initialization layer；
4) another original powder for molding of the layer containing photochromic material is laid in the top of work at present layer, as new
Working lining；
5) using triggering light to irradiate the new working lining according to the formable layer shape, the new working lining is initiated light
The original powder for molding for irradiating part there occurs change to the absorptivity of heat radiation；
6) using working lining new described in heat radiation light irradiation, the new working lining is initiated the original of light irradiation part
The temperature of powder for molding is raised and sintered, and forms the moulding section of the new working lining, and makes the new working lining
Moulding section sintered with the moulding section of previous working lining；
7) repeat step 4) to step 6) until completing whole forming process.
Further, the initiation light is ultraviolet.
Further, the heat radiation light is infrared ray.
Further, step 1) the original powder for molding is preheated before.
Further, the temperature of initialization layer and new working lining each several part described in real-time monitoring, when the initial work
When making to occur on layer or new working lining the position of the temperature range that temperature exceedes setting, adjustment triggers light in the initialization
The distribution of drop shadow intensity on layer or new working lining.
Photochromic material of the present invention refers to the molecule knot under the initiation light irradiation effect of certain wavelength and intensity
Structure can change, and so as to cause its spectral absorption characteristics, and then change the material of the color of its presentation.Usual this light absorbs
Spectral change is reversible, and photochromic material of the present invention refers to the light absorbs frequency spectrum in the case where light irradiation effect is triggered and changes
Material, particularly to heat radiation light absorbs frequency spectrum change material, do not require that light absorbs spectral change is reversible.
Sintering of the present invention refers to that the temperature rising of original powder for molding causes powder to melt in whole or in part and tie
The process being combined.
The original powder for molding for being initiated light projection part of the present invention is to improve with respect to the absorptivity of heat radiation.
Certainly, those skilled in the art can also will be initiated the original powder for molding design of light projection part according to specific actual requirement
Absorptivity into relative heat radiation is to reduce, and then triggers the negative-appearing image that light is forming shape in the projection of shape of working lining.
Beneficial effects of the present invention：The present invention is based on the spectrum for triggering light to change photochromic material in original powder for molding
Absorption characteristic makes the temperature of the moulding section because inhaling so as to change the moulding section of powder for molding to infrared source absorptivity
Receive the infrared source and raise and reach sintering, because being to carry out in flakes, sintering velocity faster, is also just carried such sintering processing
The speed of increasing material manufacturing high.
Brief description of the drawings
Fig. 1 is the structural representation of light-initiated quick increasing material manufacturing equipment of the present invention.
Shown in figure：
1- frames；2- infrared sources；3- triggers optical projection device；4- heat radiation light；5- triggers light；The original shaping powders of 6-
End；The shaping entity that 7- has been sintered；8- powder laying apparatus；9- powder storage chambers；10- powder pushers；11- powder compactings
Chamber；12- powder compacting platforms, 13- rebounds；14- powder bed lifting subsystem.
Specific embodiment
With reference to accompanying drawing of the invention, technical scheme is clearly and completely described.
As shown in figure 1, the light-initiated quick increasing material manufacturing equipment of one kind of the present invention, including frame 1 and in frame 1
Powder bed system, trigger light projection system and irradiated with thermal radiation system；The powder bed system includes powder compacting chamber 11, the powder
The upper end of last forming cavity 11 is set in opening, and powder compacting platform 12, the powder compacting are provided with the powder compacting chamber 11
The lower end of platform 12 is provided with powder bed lifting subsystem 14, is placed between the powder compacting chamber 11 and the powder compacting platform 12
Original powder for molding 6 constitute powder bed, the upper surface of powder bed is also referred to as working lining；The initiation light projection system includes setting
Initiation optical projection device 3 above powder compacting platform 12 and the computer system being connected with the initiation optical projection device 3
(not shown), the computer system is used to control to trigger optical projection device 3 to be projected out drawing for forming shape on working lining
Luminous 5；The irradiated with thermal radiation system includes the infrared source 2 above powder compacting platform 12.The powder bed system is also
Including powder storage chamber 9, the upper end of the powder storage chamber 9 is also set in opening, is provided with along longitudinal direction in the powder storage chamber 9
Motion powder pusher 10, is provided with powder laying apparatus 8, the powder storage at the upper end open of the powder storage chamber 9
The upper end open of room 9 is located at same level with the upper end open in the powder compacting chamber 11, and is located at by one described same
Rebound 13 in horizontal plane is connected.
In the present embodiment, the powder bed system also includes powder preheating device, for original powder for molding 6 to be preheating to
Below sintering temperature, reduce original powder for molding initial temperature to the difference between sintering temperature, so that needed for reducing sintering intensification
The time wanted or reduction are to sintering the requirement of infrared source power with save energy and reduces cost.In the present invention, it is original
Powder for molding 6 refers to the powder for molding containing light-induced variable material.
In the present embodiment, the initiation light of the initiation optical projection device 3 is ultraviolet.In addition, initiation light can also lead to
The mode for crossing optical scanner or mechanical scanning projects to the shape layer.
In the present embodiment, the infrared source 2 is infrared transmitting device.
Increasing material manufacturing process in advance would generally be cut into slices shaped three dimensional shape, form a series of two-dimensional shapes,
Exactly correspond to the forming shape of each working lining.The principle and method of specific section are known for material increasing field, herein not
Do repetition.
The invention also discloses a kind of method of increasing material manufacturing, comprise the following steps：
1) powder pusher 10 opens the upper end that the original powder for molding 6 in powder storage chamber 9 releases powder storage chamber 9
Mouthful；
2) the original powder for molding 6 at the upper end open of powder storage chamber 9 is in the presence of powder pusher 10
It is pushed to powder compacting chamber 11, and laying forms initialization layer on powder compacting platform 12；
3) triggering optical projection device 3 will trigger light to irradiate the initialization layer according to the formable layer shape, described initial
The original powder for molding that working lining is initiated light irradiation part there occurs change to the absorptivity of heat radiation；
4) the heat radiation light 4 of infrared source 2 irradiates the initialization layer, and the initialization layer is initiated illumination part
The temperature of the original powder for molding for dividing is raised and sintered, and forms the moulding section of the initialization layer；
5) another original powder for molding of the layer containing photochromic material is laid in the top of work at present layer, as new
Working lining；
6) triggering optical projection device 3 will trigger light to irradiate the new working lining according to the formable layer shape, described new
The original powder for molding that working lining is initiated light irradiation part there occurs change to the absorptivity of heat radiation；
7) working lining new described in the heat radiation light irradiation of infrared source 2, the new working lining is initiated illumination part
The temperature of the original powder for molding for dividing is raised and sintered, and forms the moulding section of the new working lining, and is made described new
The moulding section of working lining sintered with the moulding section of previous working lining, the shaping entity 7 that formation has been sintered；
8) repeat step 5) to step 7) until completing whole forming process.
In the present embodiment, the initiation light is ultraviolet.The energy of ultraviolet is higher, is easily caused photochromic material
Chemical reaction.Meanwhile, the photochromic material can select main material sensitive to UV light, so that containing photic
The original powder for molding of off-color material is insensitive to visible ray, it is easy to preserve.
In the above-described embodiments, the heat radiation light is infrared ray, such as ceramics or carbon fiber infrared heat radiation light source,
The thermal source containing visible component, such as Halogen lamp LED can be selected.
In the present embodiment, further, step 1) the original powder for molding 6 is preheated before.
In addition, in order that the sintering temperature of working lining each several part can be maintained at setting in the range of, to working lining not
Real-time monitoring is carried out with the temperature of position, when a part of temperature of the working lining of monitoring exceedes the scope of setting, can be passed through
Adjustment triggers light to be projected in the intensity of diverse location, so as to adjust the width of the photochromic material spectral absorption characteristics change
Degree, and then reach the purpose of adjustment work layer each several part temperature.The detection of working lining temperature can be by infrared hot sensing elements
Realize, for example with thermal imaging sensor, it is also possible to if installing dry temperature sensor in the bottom of powder laying apparatus 8, work as powder
Laying apparatus can measure the temperature of working lining diverse location in working lining upper direction.
Original powder for molding is 0.2 by mass ratio：99.8 to 5：95 silver halide particle and PA6 nylon powders is made；Should
Silver iodide mass ratio accounts for 0 to 100% in the silver halide particle of original powder for molding, and remaining is silver bromide；In silver halide particle
A diameter of 0.2 micron to 10 microns of more than 85% particle；Silver halide particle directly can mix with nylon powder, make halogenation
Argent grain is attached directly to the outer surface of nylon powder, it is also possible to plus adhesive is wrapped in nylon powder outer surface or in nylon
It is added in nylon before powder processed.The specific proportioning of the original powder for molding is according to the intensity for triggering light, shaping speed and cost
Optimized etc. index, the content for reducing silver halide can reduce the cost of original powder for molding, but can increased to triggering light
The requirement of intensity and irradiation time, too low silver halide level can also influence powder for molding to the absorptivity of infrared source, so that
Reduce shaping speed.
Principle of the invention：
Photochromic material of the present invention refers to the molecule knot under the initiation light irradiation effect of certain wavelength and intensity
Structure can change, and so as to cause its spectral absorption characteristics accordingly to change, and then change the material of the color of its presentation.Generally this
It is reversible to plant light absorbs spectral change, and photochromic material of the present invention refers to the spectrum in the case where light irradiation effect is triggered and inhales
The material of characteristic changing is received, the material for particularly changing to heat radiation light absorbs frequency spectrum does not require that spectral absorption characteristics change can
It is inverse.
Photochromic material of the present invention can be inorganic photochromic material, such as silver halide, typical such as bromination
Silver and silver iodide, the silver-colored tiny crystal grains that can be decomposited when strong illumination are presented burgundy.The photochromic material is relative
The size that the mixed proportion of the content of original powder for molding and different silver halides also has silver salt particles can all influence photosensitive speed
Degree and photosensitive aftershaping powder absorb the ability of thermal source radiation.
Photochromic material of the present invention can also be organic photochromic material.For example, the photochromic material
It is spiro-pyrans class, under ultraviolet light, the C-O keys fracture open loop in its colourless spiro-pyrans structure, molecule is locally rotated,
The corresponding red shift of absorption spectrum.In addition, organic photochromic material can also be, but not limited to, the liquor-saturated class of fulgenic acid, aryl ethylene class
And azobenzene.
Sintering of the present invention refers to that the temperature rising of original powder for molding causes powder to melt in whole or in part and tie
The process being combined.
The original powder for molding 6 for being initiated light projection part of the present invention is to improve with respect to the absorptivity of heat radiation
's.Certainly, the original powder for molding 6 that those skilled in the art also can will just be initiated light projection part is designed to relative thermal spoke
The absorptivity penetrated is to reduce, and then triggers the negative-appearing image that light is forming shape in the projection of shape of working lining.
Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the invention, it is all in essence of the invention
Within god and principle, any modification, equivalent substitution and improvements made etc. should be included within the scope of the present invention.
Claims (10)
1. a kind of light-initiated quick increasing material manufacturing equipment, it is characterised in that including powder bed system, trigger light projection system and hot spoke
Penetrate irradiation system；
The powder bed system includes powder compacting chamber, and the upper end in the powder compacting chamber is set in opening, the powder compacting chamber
Powder compacting platform is inside provided with, the lower end of the powder compacting platform is provided with powder bed lifting subsystem；
It is described trigger light projection system include initiation optical projection device above the powder compacting platform and with the initiation light
The connected computer system of projection arrangement；
The irradiated with thermal radiation system includes the infrared source above powder compacting platform.
2. light-initiated quick increasing material manufacturing equipment according to claim 1, it is characterised in that the powder bed system also includes
Powder storage chamber, the upper end of the powder storage chamber is also set in opening, and powder pusher is provided with the powder storage chamber,
Powder laying apparatus, the upper end open of the powder storage chamber and the powder are provided with the upper end open of the powder storage chamber
The upper end open of forming cavity is generally aligned in the same plane, and the rebound being located in the same plane by is connected.
3. light-initiated quick increasing material manufacturing equipment according to claim 2, it is characterised in that the powder bed system also includes
Powder preheating device.
4. light-initiated quick increasing material manufacturing equipment according to claim 1, it is characterised in that the initiation optical projection device
Initiation light be ultraviolet, the infrared source be infrared transmitting device.
5. a kind of method of increasing material manufacturing, it is characterised in that comprise the following steps：
1) one layer of original powder for molding containing photochromic material is laid, as initialization layer；
2) using initialization layer described in light irradiation is triggered, the initialization layer is initiated the original shaping powder of light irradiation part
The absorptivity of foot couple heat radiation there occurs change；
3) using initialization layer described in heat radiation light irradiation, the initialization layer is initiated the original shaping of light irradiation part
The temperature of powder is raised and sintered, and forms the moulding section of the initialization layer；
4) another original powder for molding of the layer containing photochromic material is laid in the top of work at present layer, as new work
Layer；
5) utilizing triggers working lining new described in light irradiation, the new working lining to be initiated the original shaping powder of light irradiation part
The absorptivity of foot couple heat radiation there occurs change；
6) using working lining new described in heat radiation light irradiation, the new working lining is initiated the original shaping of light irradiation part
The temperature of powder is raised and sintered, and forms the moulding section of the new working lining, and make the new working lining into
Type part sinters with the moulding section of previous working lining；
7) repeat step 4) to step 6) until completing whole forming process.
6. method according to claim 5, it is characterised in that the initiation light is ultraviolet, the heat radiation light is red
Outside line.
7. method according to claim 5, it is characterised in that the original powder for molding is 0.2 by mass ratio：99.8 to
5：95 silver halide particle and PA6 nylon powders is made.
8. method according to claim 7, it is characterised in that a diameter of 0.2- of 85% silver halide particle
10um。
9. method according to claim 5, it is characterised in that step 1) before the original powder for molding is carried out it is pre-
Heat.
10. method according to claim 5, it is characterised in that initialization layer and new working lining described in real-time monitoring
The temperature of each several part, when occurring the position that temperature exceedes the temperature range of setting on initialization layer or new working lining
When, adjustment triggers the distribution of light drop shadow intensity on initialization layer or new working lining.
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| CN201611236861.5A CN106738904A (en) | 2016-12-28 | 2016-12-28 | A kind of light-initiated quick increasing material manufacturing device and method |
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| CN201611236861.5A CN106738904A (en) | 2016-12-28 | 2016-12-28 | A kind of light-initiated quick increasing material manufacturing device and method |
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| CN108372659A (en) * | 2018-02-07 | 2018-08-07 | 西安康拓医疗技术有限公司 | Subregion pre-heating device based on mask and its subregion pre-heating mean |
| CN108724707A (en) * | 2018-06-26 | 2018-11-02 | 珠海天威飞马打印耗材有限公司 | 3 D-printing system and its Method of printing |
| CN108908934A (en) * | 2018-06-26 | 2018-11-30 | 珠海天威飞马打印耗材有限公司 | 3 D-printing system and its Method of printing |
| CN113165375A (en) * | 2019-03-11 | 2021-07-23 | 登士柏希罗纳有限公司 | Stereolithography apparatus with detection unit for optical adjustment and image modification |
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| CN113165375B (en) * | 2019-03-11 | 2024-05-17 | 登士柏希罗纳有限公司 | Stereolithography apparatus with detection unit for optical adjustment and image modification |
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