Summary of the invention
Technical problem to be solved by this invention is to be the defect existed for existing bleeding point vacuum glass, area vacuum glass that provides a kind of glass to be welded with seal strip groove and open holes and preparation method thereof, the making method technique of this vacuum glass is simple, the vacuum glass of made and toughened vacuum glass not only are conducive to install and use, and can guarantee the resistance to air loss of vacuum glass, and can increase its intensity and heat insulation, sound-proofing properties.
In order to solve the problems of the technologies described above, the invention provides the area vacuum glass that a kind of glass is welded with seal strip groove and open holes, comprise upper glass and lower-glass, it is characterized in that open holes and bleeding point unite two into one, described upper glass and described lower-glass are flat glasss, the periphery of described upper glass and described bleeding point has sealed strip, the periphery of described lower-glass and the periphery of described bleeding point have sealed strip and sealing groove, the periphery of described upper glass and described lower-glass welds together in normal pressure lower sealing edge stove by low temperature glass solder, described bleeding point utilizes brazing metal self-closed in vacuum oven, form the vacuum layer of a sealing between described upper glass and described lower-glass, have in described vacuum layer and be the upholder that dot matrix is arranged.
In order to solve the problems of the technologies described above, the invention provides the preparation method of area vacuum glass or plane toughened vacuum glass, it comprises:
The first step, according to the shape of the area vacuum glass of required making and two flat glasss up and down of size cutting desired size, edge punching fabrication and installation hole and bleeding point at upper lower-glass, offer sealing groove at the peripheral weld of lower-glass and the periphery of bleeding point, and upper and lower two blocks of glass are carried out to edging, chamfering, cleaning and drying treatment;
Second step, prepare sealed strip at the periphery of upper glass and the periphery of bleeding point and the periphery of sealing groove, the sealed strip of upper glass can insert in corresponding sealing groove, and, at least one making upholder on glass, upper glass, lower-glass are sent in High Temperature Furnaces Heating Apparatus or annealing furnace carried out pyroprocessing or tempering processing subsequently;
The 3rd step, will evenly be coated with low temperature glass solder in the sealing groove of lower-glass periphery, upper and lower glass is sent in the edge sealing stove after closing sheet;
The 4th step, carry out the heat temperature raising operation to described edge sealing stove, more than being warming up to the melt temperature of low temperature glass solder, reaches the edge sealing temperature, and the sealed strip of upper glass is under the action of gravity of glass in the embedding sealing groove; Stop heating, lower the temperature with stove, low temperature glass solder hermetic welds together two blocks of glass, and the fire door of opening the edge sealing stove obtains double glazing;
The 5th step, pack brazing metal in the bleeding point of double glazing into, and send in vacuum oven; To described vacuum sole vacuumize, limit heating, be evacuated to 0.1Pa following, be warming up to the temperature of fusion of brazing metal more than, brazing metal is fused into liquid, liquid retention is in the sealing groove of lower-glass, the sealed strip of upper glass also is submerged in liquid, and liquid is by the bleeding point self-sealing; Stop heating, with stove cooling, brazing metal solidifies realizes airtight sealing afterwards to bleeding point, opens vacuum oven, takes out area vacuum glass;
The 6th step is put into seal gum and protective casing in the bleeding point of area vacuum glass, at the place suitable for reading of protective casing Paste Product trade mark.
Wherein, the periphery of the periphery of described upper glass or bleeding point has a sealed strip at least.
Wherein, the periphery of the periphery of described lower-glass or bleeding point has a sealing groove and two sealed strips at least.
Wherein, the sealed strip of described upper glass is corresponding with the sealing groove of described lower-glass, and the sealed strip of described upper glass can insert in the sealing groove of described lower-glass.
Wherein, between described brazing metal and described glass or described sealed strip, the metal paste coating is arranged, metal paste contributes to combining closely of brazing metal and glass.
Wherein, described upper glass and described lower-glass are simple glass or toughened glass or semi-tempered glass.
Wherein, described upper glass and described lower-glass are simple glass or coated glass or Low-E glass.
Wherein, described sealed strip adopts printing, printing or mechanically spraying cryogenic glass powder or the modes such as glass ink or metal paste to prepare.
Wherein, described sealing groove is formed by mechanical workout or laser processing, and the preferred mechanical processing mode, as mechanical mill, mechanical cutting etc.
Wherein, the internal surface of the sealing groove of described lower-glass bleeding point periphery can the paint metals slurry, and metal paste contributes to combining closely of brazing metal and glass.
Wherein, described brazing metal comprises low-temperature metal scolder and solder, and described material is existing commercial commodity.
Further, the fusing point of described brazing metal is lower than the fusing point of low temperature glass solder, and during the brazing metal fusing, the low temperature glass solder of edge sealing remains unchanged.
Further, described brazing metal is shaped as powdery, strip, sheet or bulk, ring-type, tubulose etc.
Wherein, above support is made by metal, pottery, glass or high molecular polymer, matrix material, preferably adopts printing, sprayed glass printing ink or polymkeric substance preparation.
Wherein, above support has one deck or two-layer; Above support be printed on one on glass, or be printed on two on glass, conventional vacuum glass preferably be printed on one on glass, toughened vacuum glass preferably be printed on two on glass.
Wherein, above support is column, or is strip; When upholder is printed on one when on glass, be preferably cylindric; When upholder is printed on two when on glass simultaneously, be preferably strip, and vertical pile.
Wherein, described edge sealing stove can once heat one to several piece area vacuum glass.
Wherein, described edge sealing stove is normal reheating furnace or microwave oven.
Further, described edge sealing stove can have basic heating system and local heating system, the basis heating system can adopt the mode of Hot-blast Heating or resistive heating as nichrome wire, electrothermal tube, hot plate etc. or suction ripple heating element, and the local heating system adopts the modes such as microwave heating or Infrared Heating;
Further, the heating of described basis, be that burner hearth or bulk glass are heated to a lower temperature, as 300 ~ 350 ℃, can not cause toughened glass obviously to be annealed;
Further, described local heating, be that scolder or glass periphery are heated to a higher temperature, as 400 ~ 450 ℃, prevents the whole obviously annealing of toughened glass;
Wherein, described vacuumizing and the bleeding point sealing can be carried out in batches in vacuum oven, also can implement by monolithic; Can wholely heat glass, also can the local heating bleeding point.
Wherein, described vacuum oven heating, can adopt conventional heating, Infrared Heating, also can adopt induction heating, LASER HEATING, can also adopt other suitable heating unit or heater meanses.
Further, described heating, can heat bulk glass, also can the local heating bleeding point.
Wherein, described seal gum preferably has secret sealing, more preferably hot melt adhesive, hot-setting adhesive or two component sealing gum.
Beneficial effect of the present invention:
Glass of the present invention is welded with the periphery of its upper glass of area vacuum glass of seal strip groove and open holes and the periphery of bleeding point has sealed strip, the periphery of lower-glass and the periphery of bleeding point have sealing groove and sealed strip, make edge sealing and the sealing of vacuum glass easier, more reliable, even the chimeric of sealed strip and sealing groove guaranteed vacuum glass in the situation that the sealing effectiveness of glass deformation, there is the bonding strength higher than low temperature welding glass between sealed strip and upper lower-glass, chimeric sealing surface area and the airtight layer thickness increased between upper lower-glass of sealed strip and sealing groove, chimeric automatic-sealed and the mass sealing that has realized bleeding point of sealed strip and sealing groove, the open holes of vacuum glass of the present invention, simple in structure, safe and reliable, convenient for production, with low cost, open holes and the bleeding point of vacuum glass of the present invention unite two into one, and not only production technique is simple, and intensity is higher, the quantity of open holes is not limit, and can have one to several, not only facilitates and installs but also be conducive to vacuumize, its size of open holes of the present invention relatively can be very large, and inside can increase protective casing, thereby is conducive to improve the quality and performance of vacuum glass, extends its work-ing life, under normal pressure under low temperature glass solder edge sealing and vacuum brazing metal sealing solved the airtight integrity problem of scolder, increased the tightness of vacuum layer between upper and lower glass, improved the life-span of vacuum glass, greatly improved vacuum glass productivity and qualification rate, reduced the production cost of vacuum glass.
Embodiment
Below adopt embodiment and accompanying drawing to describe embodiments of the present invention in detail, to the present invention, how the utilisation technology means solve technical problem whereby, and the implementation procedure of reaching technique effect can fully understand and implement according to this.
Embodiment: referring to accompanying drawing, area vacuum glass is comprised of upper glass 1 and lower-glass 2, two blocks of glass are toughened glass or semi-tempered glass, wherein one or low emissivity glass, its making method is as follows: at first according to the shape of made area vacuum glass and a flat glass and a low emissivity glass of size cutting desired size, selecting low emissivity glass is lower-glass 2, edge at upper lower-glass respectively bores through hole formation bleeding point and an open holes 3, offer sealing groove 6 at the periphery of lower-glass 2 and the periphery of bleeding point 3, and carry out edging, chamfering and cleaning, dry, peripheral weld at upper glass 1, on the periphery of bleeding point 3 and lower-glass 2, the periphery of sealing groove 6 utilizes screen printing technique to print sealed strip also simultaneously at least one printing upholder 8 on glass, secondly two blocks of glass are sent in annealing furnace and carried out wind-cooling reinforcing, obtain tempering or semi-tempered glass, again by the interior even coating low temperature glass solder 4 of the sealing groove 6 of lower-glass 2 peripheries, and two glass consistencies from top to bottom are stacked together, send in the edge sealing stove, the edge sealing stove and accessory has basic heating system and local heating system, first utilize basic heating system as electric heater for heating, make basal temperature rise to 300 ~ 350 ℃, the microwave heating of recycling local heating system is heated to 430 ~ 450 ℃ of melt temperatures by low temperature glass solder, and the low temperature glass solder 4 of melting by two glass cementations together, stop heating, lower the temperature with stove, low temperature glass solder 4 hermetic welds together two blocks of glass, the metallic zinc solder 7 of finally packing in bleeding point 3, send in vacuum oven, vacuumized and heating operation, be evacuated to below 0.1Pa, be warming up to the melt temperature of metallic zinc solder 7 more than 380 ℃, metallic zinc solder 7 is fused into liquid retention in sealing groove 6, sealed strip 5 also is submerged in liquid, and liquid is by the bleeding point self-sealing, stop heating, lower the temperature with stove, metallic zinc solder 7 condenses into solid, and bleeding point is realized to airtight sealing, opens vacuum oven, takes out area vacuum glass.Put into while hot seal gum 9 as butyl rubber in bleeding point, protective casing 10 packed in open holes 3, with seal gum 9, fill up the space between protective casing 10 and open holes 3, last on protective casing 10 covering product brand 11.
All above-mentioned these intellecture properties of primary enforcement, do not set restriction this product innovation of other forms of enforcement and/or novel method.The modification of those skilled in the art based on foregoing, can realize similar implementation status.But all modifications or transformation belong to the right of reservation based on product innovation of the present invention.
The above, be only preferred embodiment of the present invention, is not the present invention to be done to the restriction of other form, and any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed or be modified as the equivalent embodiment of equivalent variations.But every technical solution of the present invention content that do not break away from, any simple modification, equivalent variations and the remodeling above embodiment done according to technical spirit of the present invention, still belong to the protection domain of technical solution of the present invention.