CN107199702A - A kind of 3D printer - Google Patents
A kind of 3D printer Download PDFInfo
- Publication number
- CN107199702A CN107199702A CN201610147998.7A CN201610147998A CN107199702A CN 107199702 A CN107199702 A CN 107199702A CN 201610147998 A CN201610147998 A CN 201610147998A CN 107199702 A CN107199702 A CN 107199702A
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- Prior art keywords
- storage tank
- liquid storage
- speculum
- axis platform
- liquid
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Abstract
A kind of 3D printer, it is characterised in that：Including computer control system, ultraviolet laser, Z-direction motion motor, Z axis platform, x/y Shaft and NC Machining Test systems are mounted in speculum, liquid storage tank and fluid infusion case on linear electric motors；Vertically irradiation, to carrying on the speculum of line of motion motor in the Y direction, then reflexes to and carried on the speculum of line of motion motor in the Y direction, finally irradiate the liquid photosensitive resin surface into liquid storage tank ultraviolet laser beams；It is base plate to have in liquid storage tank above the Z axis platform that Z-direction motion motor drives, Z axis platform, and liquid storage tank is connected by pressure control device with fluid infusion case；By controlling the motion of speculum and Z axis platform to realize UV laser beam to liquid resinous solidification.The present invention proposes that a kind of collection process velocity is fast, formed precision is big compared with high, shaping breadth, and resin utilization rate is high, lower-cost feature is in the 3D printer of one.
Description
Technical field
The present invention relates to a kind of increasing material manufacturing that three dimensional practicality modelling is carried out using laser technology
The 3D printing equipment of (i.e. 3D printing) equipment, especially photocuring.
Background technology
Currently known 3D printing technique is described as " the third time industrial revolution ", widely should
For fields such as industrial design, medical treatment, teaching, Aero-Space.The main flow of 3D printing technique
Technology includes laser three-dimensional photocuring technology (SLA), fused glass pellet (FDM), selectivity and swashed
Light smelting technology (SLM), digital optical processing technique (DLP), 3 D-printing cohere shaping (3DP)
Deng.
Laser three-dimensional photocuring technology (StereoLithographyAppearance, abbreviation SLA),
It is the rapid prototyping manufacturing technique occurred earliest, light source used in SLA is laser, with ripple
The characteristics of growing small single, spot size and big power density, can by accurately controlling probe
To realize part high speed, high accuracy processing.But existing SLA system designs are complicated, into
During type, in order to ensure the flatness of resin liquid finished surface, it is necessary to complicated and costliness
Equipment de-regulation liquid level flatness so that total system volume is excessive and involves great expense；It is another
Aspect, in forming process, generally requires a large volume resin reservoir, causes resin material
Utilization rate is very low, and expensive cost and overweight equipment are unfavorable for the popularization and practicality of SLA
Change.
Fused glass pellet (FusedDepositionModeling, abbreviation FDM), also known as fuse
Deposition, is a kind of rapid shaping technique.FDM is after low melting material is melted, by by counting
The fine shower nozzle of calculation machine numerical control carries out two-dimentional filling, the silk material of ejection by CAD layering cross-section datas
Through cooling down adhesive solidification generation a thin layer section, 3D solid is layering into.It is characterized in not
Using laser system, operation and maintenance is simple, and equipment volume is compact, it is easy to carry, it is adaptable to
Working environment is easy to be received by general population, but because it needs to ensure wire vent process extruded velocity
Proper Match is carried out with filling speed, process velocity is influenceed, extrusion silk real contour line is beyond reason
Think contour line region, influence molding part precision, compared to SLA, DLP technology acuracy and printing speed
There is a big difference for degree.
The content of the invention
For using fused glass pellet (FDM) technology as the 3D printing equipment print speed relied on
Low, formed precision is low, using laser three-dimensional photocuring (SLA) technology as the 3D printing equipment relied on
The characteristics of cost is high, shaping breadth is less than normal, resin utilization rate is low, proposes a kind of collection process velocity
Hurry up, formed precision it is big compared with high, shaping breadth, resin utilization rate is high, lower-cost feature in
The 3D printer of one.
A kind of 3D printer, it is characterised in that：Including computer control system, ultraviolet laser,
Z-direction motion motor, Z axis platform, x/y Shaft and NC Machining Test systems, are mounted on linear electric motors
Speculum, liquid storage tank and fluid infusion case；Ultra-Violet Laser is through being mounted in Y linear motor rotors
Speculum, reflexes to the speculum being mounted in X linear motor rotors, and liquid storage is arrived in final irradiation
Liquid photosensitive resin surface in pond；The Z axis for having Z-direction motion motor to drive in liquid storage tank is put down
It is base plate above platform, Z axis platform, liquid storage tank is connected by pressure control device with fluid infusion case
Connect；By controlling the motion of speculum and Z axis platform to realize UV laser beam to liquid resinous
Solidification, the material of the base plate is polystyrene resin, the composition of the polystyrene resin
Composition includes high impact polystyrene, General Purpose Polystyrenre, antioxidant, white oil and carbon black；
Wherein the weight content of high impact polystyrene is 85%-95%, the weight of General Purpose Polystyrenre
Amount content is 8%-27%, and antioxidant, white oil and carbon black are surplus.
Further, the bottom airtight connection provided with active clapboard and liquid storage tank below Z axis platform,
The preparation process of the ACM is：
(1) each raw material is stirred and evenly mixed into 15min according to weight content with homogenizer first；
(2) and then melting extrusion in double screw extruder is transferred to, cooled down；Wherein, it is double during extrusion
The barrel temperature of screw extruder is：190-220 DEG C of back segment, 220-230 DEG C of stage casing, leading portion
225-230 DEG C, 245-250 DEG C of head temperature, head pressure：5-9Mpa；
(3) cylindrical pellet product is finally granulated to obtain；
The processing aid is white oil；
The stabilizer is antioxidant；
The dyestuff is carbon black.
Further, ultraviolet laser wavelength is in 355~405nm.
X-direction linear electric motors movement velocity is in 2m/s~7m/s, 40~50m/s2 of acceleration；Y
Direction linear electric motors movement velocity is in 2m/s~7m/s, 20~30m/s2 of acceleration.
Ultraviolet laser wavelength used is single in the present invention, spot size is small, power density is big,
The solidification of resin can be achieved within the extreme time, thus can realize than FDM technology more rapidly,
More accurate shaping.And laser used in this method is only general ultraviolet light source, light beam is carried out
After certain collimation focusing by the i.e. controllable light beam of motion of speculum directly over workpiece
It is mobile, without complicated optical system, it is not required that harsh working environment, make in addition
With the liquid storage tank with active clapboard and fluid infusion case, equipment cost and use cost are with respect to SLA
It is lower.
The operation principle of the present invention：Substituted and swept using the speculum being mounted on high-speed LEM
Galvanometer is retouched, ultraviolet laser beams can vertically irradiate liquid photosensitive resin surface.By entering to model
Row slicing treatment, designs scanning pattern, and the data of generation will accurately control speculum and Z axis to put down
The motion of platform.By the speculum in computer control X, Y direction with high acceleration, height
Speed motion realizes UV laser beam to liquid resinous solidification, and its forming part scope can not
Limited by vibration mirror scanning scope.
The bottom airtight connection of active clapboard and liquid storage tank below Z axis platform, in filling liquid storage
The usage amount of liquid can be reduced during pond, in the lifting process of Z axis platform, active clapboard leads to
Cross the smooth movement that self-deformation ensures platform.Outside fluid infusion case is connected with liquid storage tank, when one layer
After liquid resin solidification is finished, computer self control Z-direction motor platform declines a spacing
From while by fluid infusion case, realizing being supplemented for resin material by pressure control device, making storage
The liquid level of resin keeps certain in liquid pool.Then the scanning of the second layer cross section, second are carried out
Cured layer is bonded on previous cured layer securely, and the cured layer being so layering forms three-dimensional
Workpiece prototype.Can lift Z axis platform after the completion of physical model printing, you can aspect by mould
Type is removed from substrate.Due to the difference in height of fluid infusion case and liquid storage tank liquid level, the tree in liquid storage tank
Fat can voluntarily be back to fluid infusion pond with the rising of Z axis platform, realize and recycle.
The technical characteristic of the present invention：
1. use wavelength to be carried out for 355~405nm Ultra-Violet Laser to liquid photosensitive resin material
Solidification；
2. using x/y Shaft and NC Machining Test systems, by high speed linear electric motors, laser mirror is driven
The motion of piece, realizes vertical scanning of the UV laser beam in resin surface；
3. forming part scope 1000mm × 2000mm × 1000mm；
4. the supercharging device that the liquid level in liquid storage tank is controlled by computer realizes liquid resin
From fluid infusion case to the supply of liquid storage tank.
Added below 5.Z direction of principal axis motor platforms be connected with liquid storage tank bottom have sealing
Energy active clapboard, the both sides of dividing plate are respectively the kinematic axis and liquid resin of platform, pass through barrier
Liquid resin occupies the method in space in pond to reduce the demand of resin during work；
6. when platform is moved, dividing plate can eliminate the obstruction moved to platform by self-deformation；
7. in the present invention, the device that 3D printing equipment is covered has：Computer control system, swashs
Light device, UV resistance protective cover, Z-direction motor platform, x/y Shaft and NC Machining Test systems, leaded light system
System, liquid storage tank, fluid infusion case, active clapboard.
Brief description of the drawings
Fig. 1 3D printers.
In figure：1. ultraviolet laser, 2.Y directions motion high speed linear electric motors, 3. base plates,
4. fluid infusion case, 5. pressure control devices, 6. liquid storage tanks, 7. active clapboards, the motion of 8.X directions
High speed linear electric motors, 9. speculums, 10. liquid resins, 11. base holder fasteners, 12.Z
Shaft platform, 13.Z directions motion motor.
Embodiment
First it is necessarily pointed out that the present embodiment is served only for carrying out furtherly the present invention
It is bright, it is impossible to be interpreted as limiting the scope of the invention.
Integral platform device such as Fig. 1 modes install connection, ensure Z axis platform and horizontal plane during assembling
It is parallel, it is ensured that direction of motion vertical and horizontal face.Base plate is laid on Z axis platform, is used in combination
Fixture makes it be fixed together with Z axis platform.After the light beam of ultraviolet laser transmitting is shaped
By focusing mirror in base splint upper surface, platform initial bit is used as.Poured into fluid infusion case
Photosensitive resin, the pressure apparatus controlled by computer controls the page of fluid infusion case and liquid storage tank high
Degree.Complete the preparation before solidification.
It should be noted that the material of base plate 3 is polystyrene resin, polystyrene resin
Composition composition include high impact polystyrene, General Purpose Polystyrenre, antioxidant, white oil and
Carbon black；Wherein the weight content of high impact polystyrene is 85%-95%, general purpose grade polyphenyl second
The weight content of alkene is 8%-27%, and antioxidant, white oil and carbon black are surplus.
The preparation process of ACM is：
(1) each raw material is stirred and evenly mixed into 15min according to weight content with homogenizer first；
(2) and then melting extrusion in double screw extruder is transferred to, cooled down；Wherein, it is double during extrusion
The barrel temperature of screw extruder is：190-220 DEG C of back segment, 220-230 DEG C of stage casing, leading portion
225-230 DEG C, 245-250 DEG C of head temperature, head pressure：5-9Mpa；
(3) cylindrical pellet product is finally granulated to obtain；
The processing aid is white oil；
The stabilizer is antioxidant；
The dyestuff is carbon black.
Layered shaping is carried out to STL threedimensional models using three-dimensional software in external computer, point
Thickness degree is 0.1mm, and is pre-designed the scanning pattern of each layering.Computer controls laser
Device output wavelength is 355nm Ultra-Violet Laser, and X, Y high speed linear electric motors are with 4m/s speed
Degree drives speculum motion, realizes scanning of the laser beam in first layer, computer controlled laser
Stop light extraction, then Z axis motor platform declines 0.1mm, feed and set from fluid infusion case to liquid storage tank
Fat, and leveling liquid level.Afterwards, laser output laser, X, Y high speed linear electric motors after
The continuous speed with 4m/s drives speculum motion, realizes scanning of the laser beam to the second layering,
Second cured layer is bonded on previous cured layer securely, repeats above step until 3D solid
Model printing is completed.Z axis platform is lifted, using the difference in height of fluid infusion case and liquid storage tank liquid level,
Resin in liquid storage tank is voluntarily back to fluid infusion pond with the rising of Z axis platform.When model substrate
Expose from liquid level, model is removed from substrate, carried out under the higher ultraviolet light of energy final
Solidification.If strict to the surface requirements of workpiece, can again through polishing, plating, paint or coloring at
Reason.
Claims (4)
1. a kind of 3D printer, it is characterised in that：Including computer control system, ultraviolet laser,
Z-direction motion motor and Z axis platform, x/y Shaft and NC Machining Test systems, are mounted on linear electric motors
Speculum, liquid storage tank and fluid infusion case；Ultra-Violet Laser is through being mounted in Y linear motor rotors
Speculum, reflex to the speculum being mounted in X linear motor rotors, final irradiation is arrived
Liquid photosensitive resin surface in liquid storage tank；There is the Z that Z-direction motion motor drives in liquid storage tank
It is base plate above shaft platform, Z axis platform, liquid storage tank is connected with fluid infusion case；Pass through control
The motion of speculum and Z axis platform realizes UV laser beam to liquid resinous solidification, the base
The material of supporting plate is polystyrene resin, and the composition composition of the polystyrene resin includes high resist
Rush polystyrene, General Purpose Polystyrenre, antioxidant, white oil and carbon black；Wherein high impact poly
The weight content of styrene is 85%-95%, and the weight content of General Purpose Polystyrenre is
8%-27%, antioxidant, white oil and carbon black are surplus.
2. a kind of 3D printer according to claim 1, it is characterised in that：Under Z axis platform
The bottom airtight connection provided with active clapboard and liquid storage tank of side, the system of the ACM
It is for step：
(1) each raw material is stirred and evenly mixed into 15min according to weight content with homogenizer first；
(2) and then melting extrusion in double screw extruder is transferred to, cooled down；Wherein, it is double during extrusion
The barrel temperature of screw extruder is：190-220 DEG C of back segment, 220-230 DEG C of stage casing, leading portion
225-230 DEG C, 245-250 DEG C of head temperature, head pressure：5-9Mpa；
(3) cylindrical pellet product is finally granulated to obtain；
The processing aid is white oil；
The stabilizer is antioxidant；
The dyestuff is carbon black.
3. a kind of 3D printer according to claim 1, it is characterised in that：Ultraviolet laser
Wavelength is in 355~405nm.
4. a kind of 3D printer according to claim 1, it is characterised in that：X-direction straight line
Motor movement speed is in 2m/s~7m/s, 40~50m/s2 of acceleration；Y-direction linear electric motors
Movement velocity is in 2m/s~7m/s, 20~30m/s2 of acceleration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610147998.7A CN107199702A (en) | 2016-03-15 | 2016-03-15 | A kind of 3D printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610147998.7A CN107199702A (en) | 2016-03-15 | 2016-03-15 | A kind of 3D printer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107199702A true CN107199702A (en) | 2017-09-26 |
Family
ID=59903615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610147998.7A Pending CN107199702A (en) | 2016-03-15 | 2016-03-15 | A kind of 3D printer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107199702A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103665706A (en) * | 2013-12-06 | 2014-03-26 | 青岛大都新材料科技有限公司 | High rigidity high gloss polystyrene resin |
| CN104816479A (en) * | 2015-05-17 | 2015-08-05 | 北京工业大学 | Large-format light curing 3D printer |
-
2016
- 2016-03-15 CN CN201610147998.7A patent/CN107199702A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103665706A (en) * | 2013-12-06 | 2014-03-26 | 青岛大都新材料科技有限公司 | High rigidity high gloss polystyrene resin |
| CN104816479A (en) * | 2015-05-17 | 2015-08-05 | 北京工业大学 | Large-format light curing 3D printer |
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| PB01 | Publication | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170926 |
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| WD01 | Invention patent application deemed withdrawn after publication |