CN102690046B - A kind of vacuum glass edge sealing method - Google Patents
A kind of vacuum glass edge sealing method Download PDFInfo
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- CN102690046B CN102690046B CN201110080685.1A CN201110080685A CN102690046B CN 102690046 B CN102690046 B CN 102690046B CN 201110080685 A CN201110080685 A CN 201110080685A CN 102690046 B CN102690046 B CN 102690046B
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Abstract
A kind of vacuum glass edge sealing method and apparatus, the vacuum glass raw sheet placing glass for bonding powder and supporter is put into vacuum furnace, through vacuumizing, thermal dehydration, fusing, cooling four steps, vacuum glass raw sheet is sealed, it is characterized in that: be the limit first using glass for bonding powder melt shutoff part vacuum glass raw sheet, by the time in glass for bonding powder melt after bubble basically eliminate, and after vacuum oven internal gas pressure reaches the air pressure (such as 0.1Pa) of setting, then use glass for bonding powder melt shutoff aspirating hole.
Description
Technical field:
The present invention relates to vacuum glass and manufacture field, refer to a kind of vacuum glass edge sealing method and apparatus especially.
Background technology
Existing glass for bonding powder sweating soldering vacuum glass edge sealing method is broadly divided into two classes: a class uses glass for bonding powder sweating soldering vacuum glass edge sealing in an atmosphere, the vacuum glass that this class edge bonding method is produced is all with aspirating hole, and production process is edge sealing and sealing of hole of bleeding in two steps; Equations of The Second Kind is sealing-in vacuum glass in vacuum furnace, and edge sealing once completes with bleeding, and does not have aspirating hole.Equations of The Second Kind method is better than first kind method in theory, completes edge sealing because Equations of The Second Kind method is a step and bleeds.But we find in actual production, glass for bonding powder is heated in vacuum oven, can produce a large amount of bubble in glass for bonding powder melting process, producing the reason of bubble is the low melting point volatile component that the gas that dissolves in process of production of the glass for bonding powder many empty G&Ws of absorption and glass for bonding powder and glass for bonding powder contain self.Some units address this problem to take to extend the way slowing down rate of rise in temperature heat-up time, this way only part solves glass for bonding powder bubble problem, but still there is numerous air-bubble, due to the existence of bubble, reduce the intensity of glass for bonding congealed solid, increase gas leakage probability, and the heat-up time of tens hours consumes mass energy.Glass for bonding powder melt viscosity is large, and the spacing of hollow plate glass levels sheet glass is less than 1 millimeter, gas is large through glass for bonding powder melt resistance to flow, vacuum glass raw sheet intermediate gas is difficult to be drawn out of, such vacuum glass inside is just difficult to reach very high vacuum tightness, low vacuum, the thermal and insulating performance of vacuum glass is just poor.
Summary of the invention
Main purpose of the present invention is to provide a kind of vacuum glass edge sealing method and apparatus.Reduce air bubble content in glass for bonding congealed solid with this, improve glass for bonding congealed solid intensity, reduce gas leakage probability, reduce heat-up time, reduce energy consumption, improve vacuum glass vacuum tightness.
The technology of the present invention solution is as follows:
A kind of vacuum glass edge sealing method, the vacuum glass raw sheet placing glass for bonding powder and supporter is put into vacuum furnace, through vacuumizing, thermal dehydration, fusing, the steps such as cooling, vacuum glass raw sheet is sealed, it is characterized in that: be the limit first using glass for bonding powder melt shutoff part vacuum glass raw sheet, when the fusing of glass for bonding powder produces bubble, in pulsed Raise vacuum process furnace, gas pressure intensity eliminates bubble, by the time in glass for bonding powder melt after bubble basically eliminate, and after vacuum oven internal gas pressure reaches the air pressure (such as 0.1Pa) of setting, use glass for bonding powder melt shutoff aspirating hole again.In Raise vacuum process furnace, gas pressure intensity eliminates the reason of bubble is that bubble is crushed or reduces when bubble outside pressure is greater than bubble internal pressure.
A kind of above-mentioned vacuum glass edge sealing method, is characterized in that: leave one or more aspirating hole when placing glass for bonding powder.This is because the fusing of glass for bonding powder can produce a large amount of bubble and rapid expansion, Raise vacuum process furnace internal gas pressure is wanted in order to eliminate bubble repression of swelling, too many for preventing glass for bonding powder melt from pushing in the middle of vacuum glass raw sheet, will ensure that heating under vacuum furnace chamber is connected with vacuum glass raw sheet inner chamber, so aspirating hole will be left when placing glass for bonding powder, aspirating hole can't be closed immediately under control of the control means at the glass for bonding powder melting dilation initial stage, at this moment because heating under vacuum furnace chamber is connected with vacuum glass raw sheet inner chamber, both sides do not have pressure reduction, glass for bonding powder melt can not be pushed in the middle of vacuum glass raw sheet (wicking action can enter a little), the glass for bonding powder melting dilation initial stage is that Raise vacuum process furnace internal gas pressure eliminates bubble best opportunity.
A kind of above-mentioned vacuum glass edge sealing method, is characterized in that: after the basic froth breaking of glass for bonding powder melt, guides glass for bonding powder melt to flow to aspirating hole, reach the object of shutoff aspirating hole by control device.
Above-mentioned vacuum glass edge sealing method, in pulsed Raise vacuum process furnace, pressure by discharging gas liquid or solid realizes in vacuum furnace.Liquid or solid evaporate into gas in vacuum furnace, Raise vacuum process furnace internal gas pressure.
A kind of above-mentioned vacuum glass edge sealing method, it is characterized in that: in pulsed Raise vacuum process furnace, pressure can be pressure in a Raise vacuum process furnace, also can be repeatedly pressure in Raise vacuum process furnace, in Raise vacuum process furnace, after pressure, heating under vacuum furnace gas will be extracted out.
A kind of above-mentioned vacuum glass edge sealing method, the glass for bonding powder on limit of shutoff part vacuum glass raw sheet and the glass for bonding powder of shutoff aspirating hole can be that identical glass for bonding powder also can be different.
A kind of above-mentioned vacuum glass edge sealing method, the glass for bonding powder on limit of shutoff part vacuum glass raw sheet and the glass for bonding powder of shutoff aspirating hole can synchronously melt also can controlled asynchronous fusing.
Above-mentioned vacuum glass edge sealing method, eliminating bubble effect to strengthen, directly gas channeling can be had the position of glass for bonding powder melt with conduit.Gas is allowed directly to blow to glass for bonding powder melt defoaming effect better.For reducing the thermal shocking entering vacuum furnace gas, can heat in advance entering vacuum furnace gas, reducing the temperature difference.
Above-mentioned vacuum glass edge sealing method, it is characterized in that: when the glass for bonding powder melt viscosity ratio used is lower, push for preventing glass for bonding powder melt and vacuum glass raw sheet middle exceeding preset region, blocking layer can be set inside vacuum glass raw sheet, and when the glass for bonding powder melt viscosity ratio used is higher, can not blocking layer be set.Blocking layer can be glass fibre or glass powder and other powderies or fibrous material, and rate of expansion will be mated with hollow plate glass.
Above-mentioned vacuum glass edge sealing method, this kind of volatile liquid such as water, alcohol preferably selected by the solvent (also someone claims carrier) of mediation glass for bonding powder.
A kind of vacuum glass edge sealing equipment and vacuum furnace, comprise a sealable cavity, for putting polylith vacuum glass raw sheet, a heating control system, for heating, vacuum glass raw sheet, a vacuum extractor, for extracting gas in sealable cavity out, is characterized in that: (1) vacuum furnace has a control gas liquid or solid enter the device of vacuum furnace; (2) vacuum furnace there is a control glass for bonding melt to flow to the device of aspirating hole.The device that control gas liquid or solid enter vacuum furnace such as controls the valve that gas enters the device of vacuum furnace.
Compare with existing vacuum glass edge sealing technology and cry, the present invention can obtain following technique effect, and 1, inhibit glass for bonding powder melt foam expansion phenomenon, prevent glass for bonding powder melt from overflowing and pollute upper strata glass.2, fully eliminate bubble in glass for bonding powder melt, increase welding strength, improve vacuum tightness in vacuum glass.3, shortening save energy heat-up time reduces costs.
Accompanying drawing explanation
Fig. 1 is glass for bonding sealing-in vacuum glass schematic diagram.
Fig. 2 is vacuum oven internal structure schematic diagram.
Fig. 3 is the vacuum glass schematic diagram having blocking layer.
Fig. 4 is for there being switchboard sealed vacuum glass principle schematic.
Fig. 5 is melting pool unsettled sealed vacuum glass schematic diagram.
Fig. 6 is that runner controls switchboard sealed vacuum glass schematic diagram.
Fig. 7 is that push rod controls switchboard sealed vacuum glass schematic diagram.
1---upper glass plate 2---supporter 3---blocking layer 4---glass for bonding powder (or glass for bonding bar) 5---control valve 6---heating under vacuum furnace wall 7---heating tube 8---airway 9---gas orifice 10------switchboard 12---aspirating hole 13---melting pool 14---runner 15---Control Shaft 16---bracing wire 17---push rod 18---lower glass plates that blocks bar 11
Embodiment:
Embodiment: as shown in Figure 4, vacuum glass raw sheet is by upper glass plate 1, lower glass plates 18, supporter 2, blocking layer 3 and glass for bonding powder 4 form, lower glass plates 18 blocks bar 10 and switchboard 11, aspirating hole 12 is left between switchboard 11 and upper glass plate, the vacuum glass raw sheet placing glass for bonding powder and supporter is put into vacuum furnace, it is 300 DEG C that this glass for bonding powder starts fusing point, complete fusing point is 420 DEG C, first heating under vacuum furnace gas is extracted out, vacuum furnace internal gas pressure is made to reach 0.01 normal atmosphere, start heating, continue to bleed while heating, stop when in-furnace temperature is more than 300 DEG C bleeding, at this moment along with heating in-furnace temperature continues to raise, bubble is constantly had to overflow in glass for bonding powder melt, along with bubble is on the increase, glass for bonding powder melt expands, at this moment intake valve is opened, air intake valve is closed when process furnace internal gas pressure rises to 0.3 normal atmosphere, at this moment can see that bubble rapid disruption reduces along with in process furnace internal gas pressure rising glass for bonding powder melt, due to the stop of switchboard 11, glass for bonding melt can not flow in aspirating hole 12, and vacuum furnace gas passes in and out in the middle of vacuum glass raw sheet by aspirating hole 12, air pressure balance can be maintained in such vacuum glass raw sheet inner chamber and vacuum oven, glass for bonding melt can not be pressed into vacuum glass raw sheet inner chamber, heating is continued while inlet open air inlet, open vacuum pump after closing air intake valve to bleed, stove internal gas pressure is made to drop to below 0.01 normal atmosphere.Repeat above-mentioned air inlet again when in-furnace temperature is more than 380 DEG C---pumping process, continue to bleed, in-furnace temperature reach 420 DEG C of vacuum tightnesss reach 0.5Pa time, stop bleeding.When after bubble basically eliminate in glass for bonding melt, remove switchboard 11 with control device, glass for bonding melt flows in aspirating hole 12, and aspirating hole is sealed.Be incubated 30 minutes, cooling is come out of the stove.
As shown in Figure 5, have a melting pool 13, have glass for bonding powder 4 in melting pool 13 above aspirating hole 12, through vacuumizing, heating, air inlet---after froth breaking supervisor of bleeding, control device is poured glass for bonding melt in melting pool 13 in aspirating hole 12 into.Complete shutoff aspirating hole program.
As shown in Figure 6, this is a device schematic diagram controlling that glass for bonding melt flows to aspirating hole.The device of aspirating hole is flowed to by runner 14, Control Shaft 15 and bracing wire 16 composition control glass for bonding melt.Bracing wire 16 connection control plate 11 and runner 14, Control Shaft 15 reaches outside stove through vacuum furnace wall, and the extraneous rotation Control Shaft 15 that passes through pulls switchboard 11.
As shown in Figure 7, this is the device that a push rod controls that glass for bonding melt flows to aspirating hole.Push rod 17 is connected with the external world, and extraneous by promoting push rod 17, push rod 17 promotes switchboard 11, and switchboard 11 promotes glass for bonding melt and flows to aspirating hole 12.Glass for bonding powder 4 is comparatively far away apart from upper glass plate edge in the figure 7, and glass for bonding melt is more sticky, so immediately aspirating hole 12 shutoff, just glass for bonding melt can not can be pushed to aspirating hole 12 by push rod 17 after glass for bonding melt froth breaking.
The device that control glass for bonding melt flows to aspirating hole can also be designed to other styles, can be manual, also can be Electronic control, but effect be exactly when needs glass for bonding melt flows to aspirating hole, controls glass for bonding melt and flow to aspirating hole.
Fig. 2 is vacuum oven inner structure schematic diagram, and vacuum oven is with gas control valve 5, and airway 8 is connected with gas control valve 5, airway 8 has gas orifice 9, directly blowing to glass for bonding powder 4, can improve defoaming effect like this by increasing airway 8 guiding gas.Push rod 17 reaches outside vacuum furnace, and the external world controls switchboard 11 by push rod 17.
Fig. 3 is the vacuum glass schematic diagram having blocking layer, and by increasing blocking layer 3, can stop that glass for bonding powder 4 melt flows into inside blocking layer 3 within the scope of ABCD, blocking layer 3 is made up of glass fibre, good air permeability, and within the scope of ABCD, gas can conveniently be extracted out.
Core of the present invention is two aspects: in (1) pulsed Raise vacuum process furnace, gas pressure intensity is eliminated the delay of bubble suppression glass for bonding melt overplumping (2) control glass for bonding melt and flowed to aspirating hole delay sealing of hole.It is the Controlling System of pressure in Raise vacuum stove or how control control device that glass for bonding melt postpones to flow to aspirating hole changes and all should be included within the scope of the claims in the present invention.
Claims (6)
1. a vacuum glass edge sealing method, the vacuum glass raw sheet placing glass for bonding powder and supporter is put into vacuum furnace, through vacuumizing, thermal dehydration, fusing, cooling step, vacuum glass raw sheet is sealed, it is characterized in that: be the limit first using glass for bonding powder melt shutoff part vacuum glass raw sheet, when the fusing of glass for bonding powder produces bubble, in pulsed Raise vacuum process furnace, gas pressure intensity eliminates bubble, by the time in glass for bonding powder melt after bubble basically eliminate, and after vacuum oven internal gas pressure reaches the air pressure of setting, use glass for bonding powder melt shutoff aspirating hole again.
2. a kind of vacuum glass edge sealing method according to claim 1, is characterized in that: leave one or more aspirating hole when placing glass for bonding powder.
3. a kind of vacuum glass edge sealing method according to claim 1, is characterized in that: after the basic froth breaking of glass for bonding powder melt, guides glass for bonding powder melt to flow to aspirating hole, reach the object of shutoff aspirating hole by control device.
4. a kind of vacuum glass edge sealing method according to claim 1, is characterized in that: in pulsed Raise vacuum process furnace, pressure by discharging gas liquid or solid realizes in vacuum furnace.
5. a kind of vacuum glass edge sealing method according to claim 1, is characterized in that: in pulsed Raise vacuum process furnace, pressure is pressure in one or many Raise vacuum process furnace, will extract heating under vacuum furnace gas out in Raise vacuum process furnace after pressure.
6. a kind of vacuum glass edge sealing method according to claim 1, it is characterized in that: when the glass for bonding powder melt viscosity ratio used is lower, push for preventing glass for bonding powder melt and vacuum glass raw sheet middle exceeding preset region, inside vacuum glass raw sheet, blocking layer is set, and when the glass for bonding powder melt viscosity ratio used is higher, blocking layer is not set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110080685.1A CN102690046B (en) | 2011-03-22 | 2011-03-22 | A kind of vacuum glass edge sealing method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110080685.1A CN102690046B (en) | 2011-03-22 | 2011-03-22 | A kind of vacuum glass edge sealing method |
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| CN102690046A CN102690046A (en) | 2012-09-26 |
| CN102690046B true CN102690046B (en) | 2016-01-13 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101474921B1 (en) * | 2013-02-26 | 2014-12-22 | 주식회사 좋은기술 | Sealing apparatus of manufacturing equipment for vacuum window |
| CN107107560B (en) | 2014-10-30 | 2019-02-19 | 康宁股份有限公司 | The intensifying method at laminated glass articles edge and the laminated glass articles formed using this method |
| CN107108317B (en) | 2014-10-30 | 2019-11-05 | 康宁股份有限公司 | The method and apparatus being sealed for the edge to glassware |
| EP3334696A1 (en) | 2015-08-13 | 2018-06-20 | Corning Incorporated | Method and system for printing 3d objects |
| US10793461B2 (en) | 2016-11-18 | 2020-10-06 | Corning Incorporated | Method and system for making 3D glass, glass-ceramic and ceramic objects |
| CN107487992A (en) * | 2017-06-29 | 2017-12-19 | 无锡市京锡冶金液压机电有限公司 | A kind of glass vacuum extractor |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101148313A (en) * | 2006-09-20 | 2008-03-26 | 黄家军 | One-step forming vacuum glass and its manufacturing method and device |
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| WO2001016045A1 (en) * | 1999-08-27 | 2001-03-08 | Qingdao Synergy Technology Appliance Co., Ltd. | The method for manufacturing vacuum glazing and its application mechanical system |
| CN101054260B (en) * | 2007-03-28 | 2010-05-19 | 徐胜利 | Method of producing large diameter transparent quartz glass tube for semiconductor technology by continuous melting method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101148313A (en) * | 2006-09-20 | 2008-03-26 | 黄家军 | One-step forming vacuum glass and its manufacturing method and device |
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Granted publication date: 20160113 Termination date: 20210322 |