CN103058502B - A kind of making method of glass material filtration - Google Patents
A kind of making method of glass material filtration Download PDFInfo
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- CN103058502B CN103058502B CN201210537802.7A CN201210537802A CN103058502B CN 103058502 B CN103058502 B CN 103058502B CN 201210537802 A CN201210537802 A CN 201210537802A CN 103058502 B CN103058502 B CN 103058502B
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Abstract
A kind of making method of glass material filtration belongs to field of laser processing.Step of the present invention: set up filter network structure model with 3D modeling software in a computer; The node extracted in network structure creates point cloud model, and now vertical direction distance between two points should be 1.8 ~ 2.1 times of horizontal direction distance; Point cloud model height need be greater than thickness of glass 2mm ~ 4mm; Point cloud density is at 130 ~ 160 points/mm
2change in scope; Laser apparatus is utilized to coordinate processing platform and galvanometer system, carry out punctum according to the point cloud model generated in glass material inside and form slight crack, microchannel can be formed because of stress between points, make to be connected between a point, form the microstructure with filtering function; Green (light) laser power changes between 300mw ~ 750mw, and ultraviolet laser power changes between 400mw ~ 900mw.The present invention is applicable to the filter screen microstructure preparation of multiple glass material, can make the filter screen microstructure of various shape, and use laser power low, it is cheap that glass prepares material price as filter screen.<!--1-->
Description
Technical field
The present invention relates to a kind of method manufacturing filtration microstructure in glass substrate inside.
Background technology
In daily life and industrial production, many places all need to be applied to filtration microstructure, the material such as Chalk-dust filtering, foam, and glass is applied equally widely in industrial production and daily life.Both merged, utilize laser in the complicated microstructure of inside glass texture, and make it penetrating in glass upper and lower surface, water molecules can by this microstructure, but foam, impurity particle cannot pass through, and complete filtration.At present, mostly the device being used for carrying out filtering is other materials, and preparation is simple, low price to utilize glass making filtration to have, the advantages such as good filtration effect, and the filtration macroshape of glass material is controlled simultaneously, and area is controlled.
Summary of the invention
For above content, be necessary that proposition is a kind of and make simple, highly reliable filtration microstructure making method, the contaminant particles, foam etc. that are used in filter liquide.
The present invention can make the glass filtration device of 0.7mm to 8mm thickness, and along with thickness increases, inside glass filtration channel increases, and therefore filter effect improves.The material making strainer use can be common soda lime glass, ultra-clear glasses, electronic glass or even liquid crystal substrate glass.
In the present invention, make the kinetic control system such as data line, laser motion Controlling System, worktable that device that glass filtration structure uses comprises computer, laser apparatus, computer are connected with laser apparatus, material is the various glass above mentioned.
A making method for glass material filtration, is characterized in that, comprises the steps:
(1) filter network structure model is set up with 3D modeling software in a computer;
(2) node extracted in network structure creates point cloud model, and now vertical direction distance between two points should be 1.8 ~ 2.1 times of horizontal direction distance; Point cloud model height need be greater than thickness of glass 2mm ~ 4mm; Point cloud density changes in 130 ~ 160 (point/mm2) scope;
(3) laser apparatus is utilized to coordinate processing platform and galvanometer system, carry out punctum according to the point cloud model generated in glass material inside and form slight crack, microchannel can be formed because of stress between points, make to be connected between a point, form the microstructure with filtering function; Green (light) laser power changes between 300mw ~ 750mw, and ultraviolet laser power changes between 400mw ~ 900mw; The filtration channel diameter of low-yield correspondence is less.
Described 3D modeling software can be: 3DMAX, Pro/E, solidworks, AUTOCAD etc.
Described point cloud model refers to lattice array, and laser, according to lattice model, is processed in position bright dipping a little.
Described some cloud density refers to adjustment distance between points, when laser power is certain, will cause between 2 without expanding channels apart from excessive between points, thus cannot be communicated with and can not play a role in filtering, cause channel diameter between 2 excessive apart from too small meeting, cause filter effect not good.Along with the increase of glass material density and light transmission rate, some cloud density and power also will increase thereupon.Because the crackle that laser apparatus hot spot produces when acting on inside glass Non-completety symmetry, it is greater than horizontal direction size in vertical direction size, therefore more easily expand at vertical direction crackle, for ensureing that filter structure is even, the distance between points of usual vertical direction is 1.8 ~ 2.1 times of horizontal direction distance.
Between 2 that described micro scale channel refers to inside glass laser sculpture, when after glass material cooling, can produce crack under tensile stress effect, the diameter in crack can with laser power and some cloud density domination.
Described laser apparatus is green (light) laser or ultraviolet laser.Green (light) laser power adjustable, mean power 300mw ~ 750mw.Ultraviolet laser mean power is 400mw ~ 900mw.
Described processing platform refers to that an energy carries out the platform of accurately movement at vertical direction, is used for locating material to be processed at vertical direction.Galvanometer system is used for laser beam in two dimensional surface inner position.
Described some cloud processing refers to, according to generating in (2) and (3) step and adjusting the point cloud model of density, the position that laser is needing to get ready is focused on, the energy density of focus point will be greater than the cracking threshold of glass, generation micro-fractures is gone out at focus point, and the position beyond focus point, energy density is low, can not damage glass.
Principle of work of the present invention is: according to glass material type and the filtration channel diameter wanted, adjust Distance geometry power between points: for common soda lime glass, optimum point cloud density is 130 ~ 140(point/mm
2), best laser power is 720 ~ 755mw, and now, laser punctum place diameter is 20 μm, and between point, channel diameter is about 5 μm; For ultra-clear glasses, its density and hardness is all higher than simple glass, and optimum point cloud density is 140 ~ 155(point/mm
2), best laser power is about 770mw, and now, laser punctum place diameter is 20 μm, channel diameter about 5 μm.Want to obtain more tiny passage to improve filtering accuracy, then by increasing some cloud density, laser power can be reduced simultaneously and realize.For simplifying position fixing process, when setting up point cloud model, model height should 2 ~ 4mm larger than thickness of glass substrate, to ensure that filtration is penetrating in the upper and lower surface of glass.Control galvanometer, platform and laser apparatus, according to the path preset at inside glass punctum, can put rear material naturally cooling, form microchannel between points, these passages allow liquid to pass through, and can filter out the contaminant particles that size is greater than diameter.The glass material of other types, according to its density, Young's modulus, and to the requirement commit point cloud density of filtration performance and laser power.
Present invention can be implemented in row in glass substrate and directly prepare the microstructure with filtering function, and the filtration zone shape of filtration unit artificially can design, as circle, trilateral, tetragon etc.
Feature of the present invention is:
1. utilize laser to carry out the preparation of filtration, belong to noncontact processing.Precision is high, and speed is fast.
2. the material of filtration unit is glass, and pollute little, cost is low.
3. the present invention uses Green laser of semiconductor pump or ultraviolet pulse laser.
4. filtration channel is produced naturally by stress, flat smooth.
5. filtration zone shape controlling is simple.Can be trilateral, circle, tetragon or closed curve.
Accompanying drawing explanation
The structural representation of Fig. 1 glass filtration structure fabrication used in the present invention system
In figure: 1, galvanometer scanning system, 2, laser beam, 3, filtration, 4, filtration glass substrate, 5, processing platform, 6, laser apparatus, 7, computer.
Fig. 2 filtration point cloud model figure, a, 3D point cloud model schematic diagram, b, 3D point cloud model vertical view, c, 3D point cloud model side-view.
Fig. 3 thickness is the simple glass circular filter structure pictorial diagram of 5mm, and filtration channel diameter is about 5 μm.
Fig. 4 thickness is the ultra-clear glasses quadratic filter structure pictorial diagram of 5mm, and filtration channel diameter is about 5 μm.
Embodiment
What be first necessary to herein means out is that the present embodiment is only used to further illustrate the present invention, and can not be interpreted as limiting the scope of the invention.
Example 1
The present invention selects volume little, 532nm Green laser of semiconductor pump easy to process, and laser motion Controlling System adopts scanning galvanometer; Thickness is selected to be that the simple glass of 1.1mm is as material; Select the circular shape for filtration.Filtration channel diameter is 10 μm, and this example belongs to the preparation of simple glass circular filter structure.
This example carries out by the following method: glass cleaning is clean, is placed on processing platform; Utilize 3Dmax analogue formation, model height is 4mm, saves as OBJ form; File is imported professional software and generate point cloud model; A cloud density is adjusted to 130(point/mm
2), savepoint cloud model is dxf form, and model diagram is shown in Fig. 2; Point cloud model dxf file is imported laser galvanometer control software design; Setting laser device power is 745mw, and laser apparatus repetition is 1.81kHz, and monopulse is got ready; Open laser apparatus, make laser apparatus start scanning according to the machined parameters preset; After scanned, take out glass, with assist gas, surface is blown off.Pictorial diagram is shown in Fig. 3.
In addition, for above-mentioned 1.1mm thickness common soda lime glass, if change a cloud density into 140 points/mm
2, laser power changes 725mw into, and other parameters remain unchanged, then can realize the filtration preparation that channel diameter is 5 μm.
Claims (1)
1. a making method for glass material filtration, is characterized in that, comprises the steps:
(1) filter network structure model is set up with 3D modeling software in a computer;
(2) node extracted in network structure creates point cloud model, and now vertical direction distance between two points should be 1.8 ~ 2.1 times of horizontal direction distance; Point cloud model height need be greater than thickness of glass 2mm ~ 4mm; Point cloud density is at 130 ~ 160 points/mm
2change in scope;
(3) laser apparatus is utilized to coordinate processing platform and galvanometer system, carry out punctum according to the point cloud model generated in glass material inside and form slight crack, microchannel can be formed because of stress between points, make to be connected between a point, form the microstructure with filtering function; Green (light) laser power changes between 300mw ~ 750mw, and ultraviolet laser power changes between 400mw ~ 900mw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210537802.7A CN103058502B (en) | 2012-12-12 | 2012-12-12 | A kind of making method of glass material filtration |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210537802.7A CN103058502B (en) | 2012-12-12 | 2012-12-12 | A kind of making method of glass material filtration |
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| Publication Number | Publication Date |
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| CN103058502A CN103058502A (en) | 2013-04-24 |
| CN103058502B true CN103058502B (en) | 2015-12-09 |
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| CN201210537802.7A Expired - Fee Related CN103058502B (en) | 2012-12-12 | 2012-12-12 | A kind of making method of glass material filtration |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103407301A (en) * | 2013-07-09 | 2013-11-27 | 北京工业大学 | Internal laser writing method capable of being used for anti-counterfeiting judgment of commodities packaged by transparent materials |
| WO2016074750A1 (en) | 2014-11-13 | 2016-05-19 | Gerresheimer Glas Gmbh | Glass forming machine particle filter, a plunger unit, a blow head, a blow head support and a glass forming machine adapted to or comprising said filter |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102775051A (en) * | 2012-06-13 | 2012-11-14 | 北京工业大学 | Glass cutting method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102775051A (en) * | 2012-06-13 | 2012-11-14 | 北京工业大学 | Glass cutting method |
Non-Patent Citations (1)
| Title |
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| "玻璃材料微通道的三倍频激光微加工研究";翟立斌等;《应用激光》;20061231;第26卷(第6期);第365-368页 * |
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