CN104786504A - SLA type printer - Google Patents
SLA type printer Download PDFInfo
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- CN104786504A CN104786504A CN201510213458.XA CN201510213458A CN104786504A CN 104786504 A CN104786504 A CN 104786504A CN 201510213458 A CN201510213458 A CN 201510213458A CN 104786504 A CN104786504 A CN 104786504A
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- deflector
- liquid crystal
- type printer
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- sla type
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Abstract
The invention discloses an SLA type printer. The SLA type printer (1000) comprises a bearing body (300), a liquid crystal panel (200), a light source device (100), a lifting component (800) and a control unit (600), wherein the bearing body (300) is used for accommodating photosensitive resin (400); the liquid crystal panel (200) is used for displaying two-dimensional images in a light transmitting mode; the light source device (100) is used for transmitting upward to pass through regions corresponding to the two-dimensional images so as to cure the photosensitive resin (400); the lifting component (800) drives the cured photosensitive resin (400) to lift; the control unit (600) is used for controlling the liquid crystal panel (200), the light source device (100) and the lifting component (800). The SLA type printer also comprises a heat dissipation component (160) for dissipating heat for the liquid crystal panel (200). The SLA type printer also comprises the heat dissipation component for dissipating heat for the liquid crystal panel so as to prevent the liquid crystal panel to be overheated.
Description
Technical field
The invention belongs to SLA (Stereo Lithography Apparatus: Stereo Lithography moulding) technical field.Specifically, the present invention relates to a kind of SLA type printer.
Background technology
Rapid shaping is a kind of new manufacture that phase late 1980s emergence and development gets up, and is the development of the multinomial technology such as CAD (CAD), computer-aided manufacturing (CAM), computer numerical control (CNC) (CNN), laser, new material, elaborate servo and comprehensive.Known RP (Rapid Prototyping: rapid shaping) method comprises SLA (Stereo Lithography Apparatus: Stereo Lithography moulding), LOM (Laminated Object Manufacturing: layer separated growth), SLS (Selective LaserSintering: selective laser sintering), FDM (Fused Deposition Modeling: fusion sediment moulding), 3DP (Three Dimension Printing: 3 D-printing), with SGC (Solid Ground Curing: Gu the photosensitive liquid phase of base).
In above RP (Rapid Prototyping) method, development is very fast, application is wider is SLA.The principle of the Stereolithography of SLA is: the light that light source sends is upward through the two dimensional image (transmission region) on liquid crystal panel, irradiate light-sensitive material, utilize the photosensitive resin of fluid state that the feature of photopolymerization reaction occurs under light illumination, make the photosensitive resin curing molding of fluid state.After one deck has exposed solidification, then carry out the exposure of lower one deck, one deck of new solidification is bonded on front one deck securely, so repeats until whole part manufactures complete.
Summary of the invention
The object of the invention is to, provide a kind of SLA type printer, it can dispel the heat to liquid crystal panel.
The present invention is achieved through the following technical solutions: a kind of SLA type printer, described SLA type printer comprises the supporting body for holding photosensitive resin, for representing the liquid crystal panel of two dimensional image with the form of printing opacity, for sending the light supply apparatus solidified to make described photosensitive resin through the region corresponding to described two dimensional image upward, drive solidified photosensitive resin lifting Lift Part and for controlling described liquid crystal panel, the control unit of described light supply apparatus and described Lift Part, wherein, described SLA type printer also comprises the thermal component for dispelling the heat to described liquid crystal panel.
As the further improvement of technique scheme, described thermal component is air-cooled thermal component or liquid cooling type radiation parts.
As the further improvement of technique scheme, described thermal component is arranged to dispel the heat to the bottom surface of described liquid crystal panel.
As the further improvement of technique scheme, described thermal component comprises blower fan and disturbing flow device, described blower fan is arranged on the sidepiece of described liquid crystal panel, and described disturbing flow device is arranged on the bottom surface contacting described liquid crystal panel between described liquid crystal panel with described light supply apparatus with forced draft.
As the further improvement of technique scheme, described disturbing flow device comprises multiple first direction wind guiding component and multiple second direction wind guiding component, described multiple first direction wind guiding component is used for air-flow to guide towards first direction, described multiple second direction wind guiding component is used for air-flow to guide towards second direction, and described first direction is crossing with described second direction.
As the further improvement of technique scheme, described first direction is mutually vertical with described second direction.
As the further improvement of technique scheme, described light supply apparatus comprises the framework with multiple compartment and the multiple luminescence units being positioned at described multiple compartment, and described multiple first direction wind guiding component and described multiple second direction wind guiding component are formed on the upper surface of described framework.
As the further improvement of technique scheme, each first direction wind guiding component is made up of the first deflector and the second deflector; Each second direction wind guiding component is made up of the 3rd deflector and the 4th deflector.
As the further improvement of technique scheme, the first deflector, the second deflector, the 3rd deflector and the 4th deflector are dull and stereotyped or curved slab.
As the further improvement of technique scheme, the angle of inclination of the upper surface of described first deflector and described framework is different from the angle of inclination of the upper surface of described second deflector and described framework, and the angle of inclination of the upper surface of described 3rd deflector and described framework is different from the angle of inclination of the upper surface of described 4th deflector and described framework.
Enforcement the invention has the beneficial effects as follows: SLA type printer of the present invention comprises the thermal component for dispelling the heat to described liquid crystal panel, and liquid crystal panel can be prevented overheated.
Accompanying drawing explanation
Fig. 1 is the schematic perspective view of the profile of SLA type printer according to an embodiment of the invention;
Fig. 2 is the concept map of the SLA type printer of Fig. 1;
Fig. 3 is the decomposing schematic representation of the major part of the SLA type printer of Fig. 1, that removes shell;
Fig. 4 is another decomposing schematic representation of the major part of the SLA type printer of Fig. 1, that removes shell;
Fig. 5 is the generalized section of the major part of the SLA type printer of Fig. 1, that removes shell;
Fig. 6 is the schematic perspective view of the framework of the light supply apparatus of the SLA type printer of Fig. 1;
Fig. 7 is the floor map of the liquid crystal panel of the light supply apparatus of the SLA type printer of Fig. 1;
Fig. 8 is another schematic perspective view of the framework of the light supply apparatus of the SLA type printer of Fig. 1;
Fig. 9 is a schematic perspective view again of the framework of the light supply apparatus of the SLA type printer of Fig. 1;
Figure 10 is A place enlarged drawing in Fig. 8;
Figure 11 is that the signal of the SLA type printer of Fig. 1 electrically forms block diagram;
Figure 12 is the another schematic perspective view of the framework of the light supply apparatus of the SLA type printer of Fig. 1, which show another embodiment of disturbing flow device;
Figure 13 is B place enlarged drawing in Figure 12;
Figure 14 is showing an embodiment again of disturbing flow device;
Figure 15 is the schematic diagram of the polycrystalline substance of SLA type printer according to another embodiment of the present invention, which show the configuration mode of blower fan;
Figure 16 shows another embodiment of thermal component.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is further detailed.
Herein, term " top ", " bottom surface ", " end face ", " upper surface " are based on SLA type printer in a state of use.Herein, term " heat radiation " means, and object temperature to be reduced to or to maintain below set point of temperature by air-flow or refrigerant.
As shown in Figure 1, Figure 2, shown in Figure 11, SLA type printer 1000 comprise supporting body 300 for holding photosensitive resin 400, for represent with the form of printing opacity two dimensional image liquid crystal panel 200, for sending upward through the region corresponding to described two dimensional image with make described photosensitive resin 400 light supply apparatus 100 solidified, the Lift Part 800 driving the photosensitive resin 400 solidified to be elevated and the control unit 600 for controlling described liquid crystal panel 200, described light supply apparatus 100 and described Lift Part 800.Wherein, described SLA type printer also comprises the thermal component 160 for dispelling the heat to described liquid crystal panel 200.
Light supply apparatus 100, liquid crystal panel 200, supporting body 300, Lift Part 800 are configured in shell 900.
As shown in figure 11, control unit 600 is by CPU (Central Processing Unit, CPU), ROM (Read Only Memory read-only storage), RAM (Random Access Memory random access memory) and carry out the formations such as the input/output interface 601 of the transmitting-receiving of various signal with each parts be electrically connected to each other.Control unit 600 is responsible for the action control of the entirety of SLA type printer 1000.ROM stores the working procedure of the groundwork of SLA type printer 1000.RAM is used as the working region etc. of SLA type printer 1000.Control unit 600 comprises light source control unit 110 and imaging drive control unit 220.
Under the assembled state of the SLA type printer 1000 of the present embodiment, light supply apparatus 100, liquid crystal panel 200 and supporting body 300 are fitted in the vertical direction successively, compact conformation.Liquid crystal panel 200 is between light supply apparatus 100 and supporting body 300.The light that light supply apparatus 100 sends arrives at supporting body 300 through liquid crystal panel 200, is radiated on photosensitive resin 400.
As shown in Figures 2 and 6, described light supply apparatus 100 is formed by multiple luminescence unit 130 array.Wherein, the quantity of luminescence unit 130 can be determined according to the meticulous requirement of Stereolithography.The fineness of Stereolithography and the quantity of luminescence unit 130 in direct ratio.Described light supply apparatus 100 has framework 120.As shown in Figure 6, multiple luminescence unit 130 is formed in each compartment (compartment) 131 of framework 120.Each luminescence unit of described multiple luminescence unit 130 includes at least one illuminator (emitter) 132 and collimater (collimiter) 134.
Light source control unit 110 and described multiple luminescence unit 130 are electrically connected.Light source control unit 110 is for controlling each luminescence unit of multiple luminescence unit 130.Thus, can be controlled each luminescence unit of multiple luminescence unit 130 by light source control unit 110, the luminescence unit immediately below the two dimensional image that only liquid crystal panel 200 is represented is lighted, and immediately below two dimensional image outside other luminescence units extinguish.Like this, can reduce the amount of veiling glare on the one hand further, can electric power be saved on the one hand.
In the present embodiment, described liquid crystal panel 200 is TFT LCDs, such as monochromatic TFT LCDs or colored TFT (Thin Film Transistor) LCDs.TFT LCDs has the advantage of high speed, high brightness, high-contrast.Certainly, the present invention is not limited thereto, described liquid crystal panel 200 also can the LCDs of other kinds, such as twisted nematic (Twisted Nematic; TN) LCDs, super twisted formula nematic (Super Twisted Nematic; STN) LCDs.The each pixel of imaging drive control unit 220 to described liquid crystal panel 200 drives, and shows desired two dimensional image.Region corresponding to two dimensional image is transparent region.Light can through the region corresponding to two dimensional image.And light can not through the region outside the region corresponding to two dimensional image.
As shown in Figure 7, when needing the layer of formation one vase shape, each pixel of imaging drive control unit 220 to described liquid crystal panel 200 drives, and shows the two dimensional image (image represented by two dimensional image region 240) of vase shape.Two dimensional image region 240 is light transmission state, and the region 230 outside two dimensional image region 240 is light tight state.The uniform light that light supply apparatus 100 sends through two dimensional image region 240, makes described photosensitive resin 400 that photopolymerization reaction and curing molding occur, forms the layer of a vase shape.
In the present embodiment, Lift Part 800 is lead screw transmission mechanism.Lift Part 800 comprises CD-ROM drive motor, screw mandrel, be connected block 500.CD-ROM drive motor is controlled by control unit 600.CD-ROM drive motor rotates for driving screw mandrel.The block 500 that is connected is connected with screw mandrel.When drive motor screw mandrel rotates, the block 500 that is connected moves up and down along screw mandrel.
In typical 3D print procedure, first, in supporting body 300, inject the photosensitive resin 400 of fluid state; Then, on liquid crystal panel 200, X-Y scheme is represented with the form of printing opacity; Then, light the luminescence unit 130 of the light supply apparatus 100 of area source form, make light irradiate the photosensitive resin in supporting body 300 through the light transmission part of liquid crystal panel 200, make photosensitive resin form a cured layer, the photosensitive resin 400 solidified is bonded in and is connected on the bottom surface of block 500; The photosensitive resin 400 solidified is promoted, until all cross sections have completed shaping by the block 500 that is connected of Lift Part 800.
In SLA type printer of the present invention, described thermal component can dispel the heat to liquid crystal panel 200, and thermal component can be such as air-cooled thermal component or liquid cooling type radiation parts etc.Or thermal component supplies the cold air of 20 DEG C to 30 DEG C in shell 900, lowers the temperature to liquid crystal panel 200.
Such as, the temperature of liquid crystal panel 200 is remained on less than 100 DEG C by described thermal component.Preferably, the temperature of liquid crystal panel 200 is remained on less than 60 DEG C by described thermal component.More preferably, the temperature of liquid crystal panel 200 remains between 20 DEG C to 48 DEG C by described thermal component.
In addition, in 3D print procedure, liquid crystal panel 200 self work produces heat, and light supply apparatus 100 also can produce a large amount of heat.Thus, described thermal component 160 is arranged to dispel the heat to the bottom surface of described liquid crystal panel 200 and/or freeze.Preferably, described thermal component 160 is arranged to dispel the heat/or refrigeration to the bottom surface of described liquid crystal panel 200 and end face.
In the present embodiment, described thermal component 160 comprises blower fan 140 and disturbing flow device 150, as shown in Fig. 2, Fig. 8, Fig. 9, Figure 10, Figure 11.As shown in Figure 2, described blower fan 140 is arranged on the sidepiece of described liquid crystal panel 200, forces the air inside and outside shell 900 to exchange.Described disturbing flow device 150 is arranged on the bottom surface contacting described liquid crystal panel 200 between described liquid crystal panel 200 with described light supply apparatus 100 with forced draft.
As shown in figure 15, blower fan 140 comprises first exhaust fan 142, second exhaust fan 144, the 3rd suction fan 146, the 4th suction fan 148.First exhaust fan 142, second exhaust fan 144 are arranged on the front side of liquid crystal panel; 3rd suction fan 146, the 4th suction fan 148 are arranged on the rear side of liquid crystal panel.Wherein, first exhaust fan 142, second exhaust fan 144 are for emitting internal gas, and the 3rd suction fan 146, the 4th suction fan 148 are for sucking air from the outside.And form air channel between described liquid crystal panel and described light supply apparatus, by disturbing flow device, forced draft contacts the bottom surface of described liquid crystal panel, carries out good heat radiation to described liquid crystal panel.
As shown in Fig. 8, Fig. 9, Figure 10, described disturbing flow device 150 comprises multiple first direction wind guiding component 151 and multiple second direction wind guiding component 153.Described multiple first direction wind guiding component 151 is for guiding air-flow towards first direction W1.Described multiple second direction wind guiding component 153 is for guiding air-flow towards second direction W2.Wherein, described first direction W1 is crossing with described second direction W2.In another embodiment, described first direction W1 is mutually vertical with described second direction W2.Thus, disturbing flow device 150 can force the uniform stream of different layers to mix, and breaks hot-fluid boundary layer, dispels the heat better to the bottom surface of described liquid crystal panel 200.
As mentioned above, described light supply apparatus 100 comprises the framework 120 with multiple compartment 131 and the multiple luminescence units 130 being positioned at described multiple compartment 131.In the present embodiment, as shown in Fig. 8, Fig. 9, Figure 10, described multiple first direction wind guiding component 151 and described multiple second direction wind guiding component 153 are formed on the upper surface of described framework 120.In other words, framework 120, described multiple first direction wind guiding component 151 and described multiple second direction wind guiding component 153 are integrated part.
As shown in Fig. 8, Fig. 9, Figure 10, each first direction wind guiding component 151 is made up of the first deflector 152 and the second deflector 154.As shown in Fig. 8, Fig. 9, Figure 10, each second direction wind guiding component 153 is made up of the 3rd deflector 156 and the 4th deflector 158.Thus, first direction wind guiding component 151 and second direction wind guiding component 153 can be formed with simple structure, reduce costs.
In the present embodiment, described first deflector 152 is different from the angle of inclination of the upper surface 122 of described second deflector 154 and described framework 120 with the angle of inclination of the upper surface 122 of described framework 120.Described 3rd deflector 156 is different from the angle of inclination of the upper surface 122 of described 4th deflector 158 and described framework 120 with the angle of inclination of the upper surface 122 of described framework 120.Thus, the air-flow of different layers can be forced more uniformly to mix, and the bottom surface of liquid crystal panel 200 fully contacts with air, to strengthen the effect of heat exchange.
Figure 12 and Figure 13 shows another embodiment of disturbing flow device.Wherein, described disturbing flow device 150b comprises multiple first direction wind guiding component 151b and multiple second direction wind guiding component 153b.Each first direction wind guiding component 151b is made up of the first deflector 152b and the second deflector 154b.Each second direction wind guiding component 153b is made up of the 3rd deflector 156b and the 4th deflector 158b.With the embodiment shown in Fig. 9 and Figure 10 unlike, the first deflector 152b and the second deflector 154b is all different in shape and size, and the 3rd deflector 156b and the 4th deflector 158b is all different in shape and size.Thus, can effect more preferably force the air-flow of different layers more uniformly to mix, the bottom surface of liquid crystal panel 200 fully contacts with air, to strengthen the effect of heat exchange.
Figure 14 shows an embodiment again of disturbing flow device.Wherein, described disturbing flow device 150c comprises multiple first direction wind guiding component 151c and multiple second direction wind guiding component 153c.Each first direction wind guiding component 151c is made up of the first deflector 152c and the second deflector 154c.Each second direction wind guiding component 153c is made up of the 3rd deflector 156c and the 4th deflector 158c.In the embodiment of above-mentioned disturbing flow device, the first deflector 152, second deflector 154, the 3rd deflector 156 and the 4th deflector 158 are dull and stereotyped.With the embodiment of above-mentioned disturbing flow device unlike, the first deflector 152c and the second deflector 154c is curved slab, and the 3rd deflector 156c and the 4th deflector 158c is curved slab.Thus, can effect more preferably force the air-flow of different layers more uniformly to mix, the bottom surface of liquid crystal panel 200 fully contacts with air, to strengthen the effect of heat exchange.
Figure 16 shows another embodiment of thermal component.Thermal component 160a comprises refrigeration coil 161.In refrigeration coil 161, circulation refrigerant, freezes to the environment outside refrigeration coil 161.Refrigerant can be such as water, freon etc.Refrigeration coil 161 can be arranged on liquid crystal panel 200 around, and is arranged between light supply apparatus 100 and liquid crystal panel 200.The setting space of each refrigeration coil 161 can be arranged according to concrete condition.
In addition, SLA type printer of the present invention and 3D Method of printing go for two dimension or the three-dimensional structure of processing various material.And the light path part of SLA type printer of the present invention is only made up of liquid crystal panel and light supply apparatus, position relationship is simple, and simple for structure, number of components is few, reduces volume and the cost of SLA type printer.In addition, the liquid crystal panel that SLA type printer of the present invention adopts is for laser galvanometer or projecting apparatus, and cost of manufacture is low, use material is few.
Although illustrate and describe embodiments of the invention, those having ordinary skill in the art will appreciate that: can carry out multiple change, amendment, replacement and modification to these embodiments when not departing from principle of the present invention and aim, scope of the present invention is by claim and equivalents thereof.
Claims (10)
1. a SLA type printer, it is characterized in that, described SLA type printer comprises the supporting body for holding photosensitive resin, for representing the liquid crystal panel of two dimensional image with the form of printing opacity, for sending the light supply apparatus solidified to make described photosensitive resin through the region corresponding to described two dimensional image upward, drive solidified photosensitive resin lifting Lift Part and for controlling described liquid crystal panel, the control unit of described light supply apparatus and described Lift Part, wherein, described SLA type printer also comprises the thermal component for dispelling the heat to described liquid crystal panel.
2. SLA type printer according to claim 1, is characterized in that, described thermal component is air-cooled thermal component or liquid cooling type radiation parts.
3. SLA type printer according to claim 1, is characterized in that, described thermal component is arranged to dispel the heat to the bottom surface of described liquid crystal panel.
4. SLA type printer according to claim 1, it is characterized in that, described thermal component comprises blower fan and disturbing flow device, described blower fan is arranged on the sidepiece of described liquid crystal panel, and described disturbing flow device is arranged on the bottom surface contacting described liquid crystal panel between described liquid crystal panel with described light supply apparatus with forced draft.
5. SLA type printer according to claim 4, it is characterized in that, described disturbing flow device comprises multiple first direction wind guiding component and multiple second direction wind guiding component, described multiple first direction wind guiding component is used for air-flow to guide towards first direction, described multiple second direction wind guiding component is used for air-flow to guide towards second direction, and described first direction is crossing with described second direction.
6. SLA type printer according to claim 5, it is characterized in that, described first direction is mutually vertical with described second direction.
7. SLA type printer according to claim 5, it is characterized in that, described light supply apparatus comprises the framework with multiple compartment and the multiple luminescence units being positioned at described multiple compartment, and described multiple first direction wind guiding component and described multiple second direction wind guiding component are formed on the upper surface of described framework.
8. SLA type printer according to claim 5, is characterized in that, each first direction wind guiding component is made up of the first deflector and the second deflector; Each second direction wind guiding component is made up of the 3rd deflector and the 4th deflector.
9. SLA type printer according to claim 8, is characterized in that, the first deflector, the second deflector, the 3rd deflector and the 4th deflector are dull and stereotyped or curved slab.
10. SLA type printer according to claim 8, it is characterized in that, the angle of inclination of the upper surface of described first deflector and described framework is different from the angle of inclination of the upper surface of described second deflector and described framework, and the angle of inclination of the upper surface of described 3rd deflector and described framework is different from the angle of inclination of the upper surface of described 4th deflector and described framework.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510213458.XA CN104786504A (en) | 2015-04-28 | 2015-04-28 | SLA type printer |
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| CN201510213458.XA CN104786504A (en) | 2015-04-28 | 2015-04-28 | SLA type printer |
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| CN104786504A true CN104786504A (en) | 2015-07-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2020002753A1 (en) * | 2018-06-28 | 2020-01-02 | Planmeca Oy | Stereolithography apparatus equipped with shutter cooling channel |
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