CN104943174B - 3d printing device and printing method thereof - Google Patents
3d printing device and printing method thereof Download PDFInfo
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- CN104943174B CN104943174B CN201510278126.XA CN201510278126A CN104943174B CN 104943174 B CN104943174 B CN 104943174B CN 201510278126 A CN201510278126 A CN 201510278126A CN 104943174 B CN104943174 B CN 104943174B
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Abstract
The invention provides a 3D printing device and a printing method thereof. The 3D printing device comprises a light source, a liquid storage groove for storing light-cured resin, a lifting cantilever, a lifting plate and a vibrator, wherein the liquid storage groove is formed in one side of the light source; the lifting cantilever is arranged on one side, far away from the light source, of the liquid storage groove; the lifting plate is arranged on the lifting cantilever; the lifting cantilever moves to drive the lifting plate to get close to or be far away from the liquid storage groove; the lifting plate is immersed into the liquid-state light-cured resin; a gap is formed between the lifting plate and a bottom wall of the liquid storage groove; and the vibrator is arranged on the outer side of the bottom wall of the liquid storage groove. The light source is exposed so that the liquid-state light-cured resin in the gap is cured and molded; two opposite side faces of the solid-state light-cured resin are stuck with the lifting plate and the bottom wall of the inner side of the liquid storage groove, respectively; the vibrator vibrates so that the solid-state light-cured resin is rapidly separated from the bottom wall of the liquid storage groove; and the lifting cantilever is lifted so that the lifting plate is ascended. In a separation process, a printing layer formed by curing can be prevented from damages and thus the printing quality of the 3D printing method is guaranteed.
Description
Technical field
The present invention relates to a kind of printing equipment, more particularly to 3D printing device and its Method of printing.
Background technology
3D printing (three dimensions printing) belongs to one kind of Rapid Prototyping technique, and it is a kind of numeral
Based on model file, with powdery metal or plastics etc. can jointing material, constructed by way of successively stacking accumulation
The technology (i.e. " lamination appearance method ") of object.In the past 3D printing technique was often used for system in fields such as Making mold, industrial designs
Modeling type, is now increasingly used for the direct manufacture of some products.
It is day by day ripe based on photocuring technology 3D printing technique, have developed both at home and abroad suitable for different field, with not
With the photocuring 3D printer of effect.Photocuring 3D printer prepares model and has a variety of advantages, and such as stock utilization is close to
100%th, limit without forming shape and the design cycle is short, cost is low.But photocuring 3D printing technique shaping speed is slow, generally into
Type speed is 5mm-15mm/ hours.Relatively low shaping speed limits to a certain extent the scale of photocuring 3D printer
Production and extensively application.
The content of the invention
Based on this, it is necessary to provide a kind of 3D printing device and its Method of printing that can realize printing speed.
A kind of 3D printing device, including light source, the reservoir for housing light-cured resin, lifted cantilever, riser and
Vibrator, located at the side of the light source, the lifting cantilever is located at the reservoir away from the light source for the reservoir
Side, on the lifting cantilever, the lifting cantilever motion makes the riser closer or far from described to the riser
Reservoir, in the light-cured resin of the riser immersion liquid, the riser exists with the diapire of the reservoir
Gap, the vibrator is located at the outside of the diapire of the reservoir；
Light source exposure makes the light-cured resin curing molding of the liquid being located in the gap, solid-state it is described
Two opposite flanks of light-cured resin are bonding with the inner side diapire of the riser and the reservoir respectively, the vibrator
Vibration, the light-cured resin for making solid-state is separated with the diapire of the reservoir, and the lifting cantilever is lifted so that described carry
Lift slab rises.
Wherein in one embodiment, the height in the gap is 30 μm -100 μm.
Wherein in one embodiment, the frequency of oscillation of the vibrator is maintained between 28KHz-40KHz.
Wherein in one embodiment, on the inside of the diapire of the reservoir oleophobic coating is provided with.
Wherein in one embodiment, the range of lift for lifting cantilever is 30 μm -100 μm.
Wherein in one embodiment, the vibrator is multiple.
Wherein in one embodiment, the vibrator is ultrasonic transducer.
Wherein in one embodiment, also including lift cylinder, the lift cylinder is located at the side of the reservoir, institute
The one end and the lift cylinder drive connection for lifting cantilever is stated, the lift cylinder drives the lifting cantilever motion, described
The other end of the riser located at the lifting cantilever.
A kind of 3D printing method, comprises the following steps：
3D printing device described in claim 1 is provided；
The lifting cantilever drives the riser to move to reach stopping behind precalculated position；
The light source is opened, is exposed, make the light-cured resin solidified forming in the gap；
The light source is closed, stops exposure；
The vibrator vibration, makes the light-cured resin separate with the diapire of the reservoir；
The vibrator stops vibration, and the lifting cantilever is lifted, and the light-cured resin of curing molding is carried with described
Lift slab rises.
Wherein in one embodiment, the vibrator time of vibration is 5 seconds.
In above-mentioned 3D printing device and its Method of printing, vibrated by vibrator, make light-cured resin with reservoir
Diapire sharp separation.Also, in separation process, can prevent the printable layer solidifying to form from damaging, it is ensured that above-mentioned 3D printing side
The print quality of method.
Description of the drawings
Fig. 1 is the axonometric chart of the 3D printing device of present embodiment；
Fig. 2 is the side view of the 3D printing device shown in Fig. 1；
Fig. 3 is the partial enlarged drawing of the part A of the 3D printing device shown in Fig. 2；
Fig. 4 is the partial enlarged drawing of 3D printing device when the vibrator of the 3D printing device shown in Fig. 2 vibrates；
Fig. 5 is the flow chart of the 3D printing method of present embodiment.
Specific embodiment
For the ease of understanding the present invention, the present invention is described more fully below with reference to relevant drawings.In accompanying drawing
Give the better embodiment of the present invention.But, the present invention can be realized in many different forms, however it is not limited to herein
Described embodiment.On the contrary, the purpose for providing these embodiments is to make to understand more the disclosure
Plus it is thorough comprehensive.
It should be noted that when element is referred to as " being fixed on " another element, it can directly on another element
Or can also there is element placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or may be simultaneously present centering elements.Term as used herein " vertical ", " level ", " left side ",
For illustrative purposes only, it is unique embodiment to be not offered as " right side " and similar statement.
Unless otherwise defined, all of technology used herein and scientific terminology and the technical field for belonging to the present invention
The implication that technical staff is generally understood that is identical.The term for being used in the description of the invention herein is intended merely to description tool
The purpose of the embodiment of body, it is not intended that of the invention in limiting.Term as used herein " and/or " include one or more
The arbitrary and all of combination of related Listed Items.
Fig. 1 and Fig. 2 is referred to, the 3D printing device 100 of present embodiment is carried out using light-cured resin 20 as raw material
3D printing.3D printing device 100 includes light source 110, reservoir 120, lifts cantilever 130, riser 140 and vibrator 150.
Light source 110 is used to launch light beam 112.Light beam 112 is radiated on light-cured resin 20, solidifies light-cured resin 20
Molding.Reservoir 120 is located at the side of light source 110.The light beam 112 that light source 110 sends shines through the diapire 121 of reservoir 120
Penetrate on the light-cured resin 20 of the bottom of reservoir 120, the exposure irradiation of 21 Jing light beams of light-cured resin 112 of liquid, solidify
It is shaped to the light-cured resin of solid-state.
Reservoir 120 is used to house light-cured resin 20.Specifically in the present embodiment, the diapire 121 of reservoir 120
Inner side is provided with oleophobic coating 123.Oleophobic coating 123 is a kind of oil resistant material, can reduce the surface of diapire 121 of reservoir 120
Adhesive force.When the curing molding on the diapire 121 of reservoir 120 of light-cured resin 20, oleophobic coating 123 makes solidification
There is no adhesion between the light-cured resin 20 of molding and the diapire 121 of reservoir 120.
Reservoir 120 can be rectangle accepting groove or circular groove.Also, the cross section of 3D printing model is smaller in size than
The size of the cross section of reservoir 120.Reservoir 120 selects suitable reservoir 120 according to the shape of 3D printing model.Liquid storage
Groove 120 is transparent cell, can be glass guide channel or resin storage tank.The light beam 112 of light source 110 can preferably project the bottom of reservoir 120
Wall 121, the light-cured resin 20 positioned at the bottom of reservoir 120 exposes, curing molding.
Specifically in the present embodiment, 3D printing device 100 also includes lift cylinder (not shown).Lift cylinder is located at storage
The side of liquid bath 120.Lift cantilever 130 and be located at side of the reservoir 120 away from light source 110.Specifically, it is L to lift cantilever 130
Shape.One end and the lift cylinder drive connection of cantilever 130 are lifted, lift cylinder drives lifting cantilever 130 to move.
It is appreciated that it can be long and narrow slab construction to lift cantilever 130.Lift one end and the lift cylinder of cantilever 130
Connection.Riser 140 is located at lifting cantilever 130 on the side of reservoir 120.Also, lift cylinder can also be motor
And screw mandrel, lifting cantilever 130 and be connected with screw mandrel, motor is rotated and drives screw mandrel rotation, then lift cantilever 130 and rise along screw mandrel direction
Or decline.
Riser 140 is on lifting cantilever 130.Specifically in the present embodiment, riser 140 is located at lifting cantilever
130 away from lift cylinder one end, lifted cantilever 130 motion make riser 140 closer or far from reservoir 120.Riser 140
In the light-cured resin 21 of immersion liquid, there is gap (figure is not marked) in riser 140 with the diapire 121 of reservoir 120.Gap
Highly it is 30 μm -100 μm.The range of lift for lifting cantilever 130 is 30 μm -100 μm.The range of lift of cantilever 130 is lifted by 3D
The formed precision of printing is determined.Lift cantilever 130 to be lifted with 30 μm -100 μm of distance, can both meet formed precision,
Shaping efficiency can also be improved.Also, it is highly equal with gap to lift the range of lift of cantilever 130.
Fig. 3 is referred to, after lifting cantilever 130 drives riser 140 to move in place, the exposure of light source 110 makes to be located at and lifted
The photocuring tree of the curing molding solid-state of light-cured resin 21 of the liquid between the diapire 121 of plate 140 and reservoir 120 in gap
Fat, that is, form a printing layer 22.The thickness of printing layer 22 is 30 μm -100 μm of any thickness value.The both sides of printing layer 22 point
Not with the interior side bonds of the diapire 121 of riser 140 and reservoir 120, deposit between the upper surface and riser 140 of printing layer 22
In adhesion and vacuum adsorption force, and vac sorb is only existed between the lower surface of printing layer 22 and the diapire 121 of reservoir 120
Power.
Vibrator 150 is located at the outside of the diapire 121 of reservoir 120.The frequency of oscillation of vibrator 150 is maintained at 28KHz-
Between 40KHz.Vibrator 150 is ultrasonic transducer.Ultrasonic transducer is that one kind can be converted into mechanical energy high-frequency electrical energy
Device.Ultrasonic transducer is a kind of energy conversion device, and its function is that the electrical power of input is converted into into mechanical output
(i.e. ultrasound wave) is passed again, and autophage is little.
Due to printing layer 22 both sides respectively with the interior side bonds of the diapire 121 of riser 140 and reservoir 120, and shake
Dynamic device 150 is located at the outside of the diapire 121 of reservoir 120.Fig. 4 is referred to, ultrasonic transducer sends supersonic oscillations, driven
There is miniature deformation in diapire 121.So as to the miniature deformation of diapire 121 makes to form gap between oleophobic coating 123 and printing layer 22,
So as to destroy the vacuum state between printing layer 22 and diapire 121.The light-cured resin 21 of liquid is now filled rapidly to seam
In gap, printing layer 22 is set to separate with the diapire 121 of reservoir 120.The frequency of oscillation of ultrasonic transducer is maintained at 28KHz-
Between 40KHz, it is ensured that separate, meanwhile, will not also destroy printing layer 22.
The reaction of 22 pairs of vibrations of the printing layer in the range of 30 μm of -100 μ m thick is consistent, and can prevent printing layer 22
Thickness it is too thin, in separation process damage；Or prevent the thickness of printing layer 22 thicker, it is more difficult to complete to separate.
It is appreciated that vibrator 150 is multiple.Specifically exist, vibrator 150 is two, respectively positioned at the bottom of reservoir 120
The both sides of wall 121, can occur equably miniature deformation between the diapire 121 that can make printing layer 22 and reservoir 120, can be with
Printing layer 22 is kept completely separate with the diapire 121 of reservoir 120, do not damage printing layer 22.
In above-mentioned 3D printing device, the light-cured resin 21 of liquid forms printing layer 22 through exposure, solidification.Printing
After layer 22 is formed, there is adhesion and vacuum adsorption force between light-cured resin 20 and riser 140, due to reservoir 120
Diapire 121 is provided between the diapire 121 of oleophobic coating 123, printing layer 22 and reservoir 120 does not have adhesion, only exists
Vacuum adsorption force between light-cured resin 20 and diapire 121.Fig. 4 is referred to, after forming printing layer 22, ultrasonic transducer is sent out
Go out supersonic oscillations, drive diapire 121 that miniature deformation occurs.So as to the miniature deformation of diapire 121 makes oleophobic coating 123 with printing
Gap is formed between layer 22, so as to destroy the vacuum state between printing layer 22 and diapire 121.The light-cured resin 21 of liquid
Now fill rapidly into gap, lift cantilever 130 and drive riser 140 to rise, realize the light-cured resin of forming process
20 are rapidly separated with diapire 121, form printing layer 22.Afterwards 3D printing device 100 repeats said process, multiple printings
Layer 22 overlaps to form 3D models, finally realizes quickly carrying out for 3D printing process.
Fig. 5 is referred to, a kind of 3D printing method is comprised the following steps：
Step S210, there is provided above-mentioned 13D printing equipments 100.
Step S220, lifts cantilever 130 and drives riser 140 to decline, and reaches precalculated position and stops declining.Precalculated position is
The distance between diapire 121 of riser 140 and reservoir 120 meets 30 μm -100 μm of requirement.
Step S230, opens light source 110, is exposed, and makes the solidified forming of light-cured resin 20 in gap.
Step S240, closes light source 110, stops exposure.Light-cured resin 20 in gap is completed after solidification, you can
Stop exposure.
Step S250, vibrator 150 vibrates, and light-cured resin 20 is separated with the diapire 121 of reservoir 120.Expose
Into after, vibrator 150 vibrates.Specifically in the present embodiment, the frequency of oscillation of vibrator 150 is maintained at 28KHz-40KHz
Between.The time of vibration of vibrator 150 is 5 seconds, to ensure between light-cured resin 20 and the diapire 121 of reservoir 120 completely
Separate.
Step S260, vibrator 150 stops vibration, lifts cantilever 130 and is lifted, and the light-cured resin 20 of curing molding is with carrying
Lift slab 140 rises.At the same time, the light-cured resin 21 of liquid is quickly filled in gap.Specifically in the present embodiment, carry
Rise cantilever 130 to be lifted with 30 μm -100 μm of distance, can both meet formed precision, it is also possible to improve shaping efficiency.
In above-mentioned 3D printing method, vibrated by vibrator, make the diapire sharp separation of light-cured resin and reservoir.
Also, in separation process, can prevent the printable layer solidifying to form from damaging, it is ensured that the print quality of above-mentioned 3D printing method.
Embodiment described above only expresses the several embodiments of the present invention, and its description is more concrete and detailed, but and
Therefore the restriction to the scope of the claims of the present invention can not be interpreted as.It should be pointed out that for one of ordinary skill in the art
For, without departing from the inventive concept of the premise, some deformations and improvement can also be made, these belong to the guarantor of the present invention
Shield scope.Therefore, the protection domain of patent of the present invention should be defined by claims.
Claims (9)
1. a kind of 3D printing device, it is characterised in that including light source, the reservoir for housing light-cured resin, lifted cantilever,
Riser and vibrator, located at the side of the light source, the lifting cantilever is located at the reservoir away from institute for the reservoir
State the side of light source, the riser on the lifting cantilever, the lifting cantilever motion make the riser near or
Away from the reservoir, in the light-cured resin of the riser immersion liquid, the riser and the reservoir
There is gap in diapire, the vibrator is located at the outside of the diapire of the reservoir；
The light source exposure consolidates the light-cured resin curing molding of the liquid being located in the gap, the light of solid-state
Two opposite flanks for changing resin are bonding with the inner side diapire of the riser and the reservoir respectively, and the vibrator shakes
Dynamic, the light-cured resin for making solid-state is separated with the diapire of the reservoir, and the lifting cantilever is lifted so that the lifting
Plate rises；The height in the gap is 30 μm -100 μm.
2. 3D printing device according to claim 1, it is characterised in that the frequency of oscillation of the vibrator is maintained at
Between 28KHz-40KHz.
3. 3D printing device according to claim 1, it is characterised in that be provided with oleophobic on the inside of the diapire of the reservoir
Coating.
4. 3D printing device according to claim 1, it is characterised in that the range of lift of the lifting cantilever is 30 μm-
100μm。
5. 3D printing device according to claim 1, it is characterised in that the vibrator is multiple.
6. 3D printing device according to claim 1, it is characterised in that the vibrator is ultrasonic transducer.
7. 3D printing device according to claim 1, it is characterised in that also including lift cylinder, the lift cylinder sets
In the side of the reservoir, one end of the lifting cantilever and the lift cylinder drive connection, the lift cylinder drives
The lifting cantilever motion, the other end of the riser located at the lifting cantilever.
8. a kind of 3D printing method, comprises the following steps：
3D printing device described in claim 1 is provided；
The lifting cantilever drives the riser to move to reach stopping behind precalculated position；
The light source is opened, is exposed, make the light-cured resin solidified forming in the gap；
The light source is closed, stops exposure；
The vibrator vibration, makes the light-cured resin separate with the diapire of the reservoir；
The vibrator stops vibration, and the lifting cantilever is lifted, and the light-cured resin of curing molding is with the riser
Rise.
9. 3D printing method according to claim 8, it is characterised in that the vibrator time of vibration is 5 seconds.
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| CN201510278126.XA CN104943174B (en) | 2015-05-26 | 2015-05-26 | 3d printing device and printing method thereof |
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| CN201510278126.XA CN104943174B (en) | 2015-05-26 | 2015-05-26 | 3d printing device and printing method thereof |
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| CN104943174A CN104943174A (en) | 2015-09-30 |
| CN104943174B true CN104943174B (en) | 2017-04-19 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10350823B2 (en) * | 2015-12-22 | 2019-07-16 | Carbon, Inc. | Dual precursor resin systems for additive manufacturing with dual cure resins |
| CN108215173A (en) * | 2016-12-15 | 2018-06-29 | 上海普利生机电科技有限公司 | Light-cured type 3 D-printing equipment, the method and system that can automatically continuously print |
| KR102060537B1 (en) * | 2018-12-11 | 2019-12-30 | 주식회사 쓰리딜라이트 | Continuous layer 3d printer using natural vibration |
| US11660815B1 (en) * | 2021-11-24 | 2023-05-30 | Nissan North America, Inc. | 3D printing system and method |
| CN114523661B (en) * | 2022-02-28 | 2023-07-25 | 西安交通大学 | Anti-adhesion and leveling promotion ultrasonic vibration workbench for 3D printing and control method |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5693144A (en) * | 1990-03-19 | 1997-12-02 | 3D Systems, Inc. | Vibrationally enhanced stereolithographic recoating |
| CN102285121A (en) * | 2011-06-08 | 2011-12-21 | 西安交通大学 | Pressing type photo-curing quick forming recoating device |
| CN104339653A (en) * | 2013-08-05 | 2015-02-11 | 李家萌 | Light curing 3D printing device and printing method |
| CN204160778U (en) * | 2014-10-14 | 2015-02-18 | 优克多维(大连)科技有限公司 | The print platform of the 3D printer that a kind of high accuracy light-cured resin is shaping |
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