DE1596634A1 - Process for the production of double glass components - Google Patents

Description

Pctor-tonvi / Ht

DipWnq. K. Far away

1 BERLIN 19 W-w-2270

BoSivai-al-ee 9 /

Tel. 3044285 ^ NOV. 1969

P 15 96 634.4-45
Pilkington Brothers Itd "

Documents for the publication i

Process for the production of double glass components

The invention relates to a method for producing double glass components, in which a lower glass plate is supported on a horizontal base, on this an upper, cut-off corners having glass plate is placed, then both glass plates are heated to a temperature from which the glass then without thermal shock can be heated to fuse the edges of both glass plates, then a suction plate against the surface of the upper one Glass plate brought into contact and then lifted with the upper glass plate, where the edges of the glass plates through Heat softened so that the edges of the top glass sheet bend down and align with the edges of the connect lower glass plate.

When the process is carried out in this way, the double glass component formed occurs at the corners as a result of the excess on glass at these points projections that have to be removed by a final processing, for example by cutting off or grinding, so that the double

¹ '* ■;., ..'..- Oiiu ^ ür, ./.ti! s .Aa.2 .ir 1 sentence 3 Ολμ. An, .. *, ^ ν ^^ u. 4 &) ». ,,

-2-109812 / 0227

Glass component receives the desired external dimensions. iJies is especially important because the weight of the double-glazed component is evenly supported over the entire lower edge of the component should be if this is used, for example, in a rigid frame o

The invention is based on the object of developing the method mentioned at the beginning in such a way that the formation of projections at the corners of the double glass component is avoided ο

This object is achieved in that the corners of the lower glass plate are also cut off in order to avoid the ver-i the edges of the rounded corners of the double glass component melt!

to form that is within the dimensions of the lower glass plate! ' lie" '

The invention is explained in more detail with reference to the accompanying drawings, in which shows

Fig. 1 is a side view of a device for implementation of the method according to the invention with two glass plates in the starting position, Figo 2 is a partial plan view of the two glass plates Figo 3 is a side view of the device in one

at another point in time of the manufacturing process, FIG. ₀ 4 shows a partial plan view of a corner of the double glass block formed.

A double glass component is made according to the invention sen method formed in that a lower glass plate 2 is placed on a horizontal support plate 1, the

1098 12/0227

_ _____ _ U596.E34 1

Dimensions correspond to the desired dimensions of the double-glazed component to be formed «. An upper glass plate 3, which can have the same length and width as the lower glass plate 2, is placed on the lower glass plate. Dimensions of the upper glass plate 3 on the length and width slightly to choose mm to 6.35 z _o b "\ large. Both glass plates 2 and 3 have corners 4 cut off at an angle.

The two glass plates 2 and 3 are placed on the plate 1 by a preheater. led in which the glass plates be heated to a temperature at which they do not suffer any thermal shock when the edges are then used for production the fusion to be heated «J

Then a suction plate 5 is placed on the upper! Surface of the |

S lower glass plate 3, as shown in Pig _c 1 j

is ο The suction plate 5 is supported by rods 6 in a known manner

j that can be raised or lowered mechanically. II

[A suction pressure can be connected via a connection 7, which holds the upper glass plate 3 against the suction plate 5 in abutment When lifting the suction plate 5, the upper glass plate 3 is de lifted lower glass plate 2, which remains on the fixed plate 1 «,

The edges of the two sheets of glass are then heated to soften them so that the edges fuse together can"

In the exemplary embodiment, the edges of the glass plates are electrically heated; electrically conductive strips 8 (pig _e 2), for example made of colloidal graphite, are applied to the

BADORiGlNAl, "g" ^ / "

Upper surface of the upper glass plate 3 applied before the preheating process., The beveled corners 4 of the upper glass} plate 3 isolate the individual strips from each other «,

After the suction plate 5 has been raised, electrodes 9 are brought into contact at each corner flows. The electrical connection of the electrodes to the electrically conductive strips is made by flashing over the ends of the strip _{or the like}

In this way, only one edge of the glass plates is heated at the same time, so that the four edges of the glass plates are heated one after the other with each heating cycle _o After about 6 to 7 heating cycles, is a temperature normally reached at the edges of the glass plates _? which is sufficient to soften, for example 900 ⁰ G ₀

If the edges of the glass plates are sufficiently softened, the edges of the upper glass plate bend downwards and merge at point 10 (FIG. _P 3) with the edges of the lower glass plate 2.

The also softened cut corners of the glass plates are caused by surface tension and gravity transformed into a smooth round shape without going over the External dimensions of the glass plate 2 form extensions on the lower glass plate 2 »These rounded corners 11 are shown in FIG

10 9 8 12/0227 -5 «

In the exemplary embodiment, the two glass plates 2 and 3 of the same dimensions, so that in the formed double-glass member a Plansch 12 is formed by the outer edge portion of the lower glass plate 2 ₉ with the double-glass element such as an ordinary sheet of glass can be installed in a window frame «. If the upper glass plate 3 has somewhat larger dimensions than the lower glass plate 2, then a less pronounced puddle 12 is formed, which assumes the shape of a bead.

The corners of both glass plates 2 and 3 are cut off at an angle in a suitable manner before the heat treatment, for example by severing or grinding. If 24-ounce glass plates are used, the corners are cut at an angle of 45 ° to the adjacent edges so that the length of the cut-off portion is approximately 12.7 mm _β

Claims (1)

Claim: Method for the production of double glass components in which a lower glass plate on a horizontal is supported, on this an upper, cut-off glass plate is placed, then both GdKjgprätter] be heated to a temperature from which the glass can be closed without thermal shock to melt the edges of both glass plates can be heated, sodaiBf ^ ine SauÄJ ^^ te against the top « surface of the upper glass plate in ^ j ^^ p <Qp ^^ cht and then with the upper glass plate raised the edges of the hat Glass plates are softened by heating, so that the bands of the upper glass plate bend downwards and join with connect the edges of the lower glass plate, thereby marked that the corners of the lower glass plate are also cut off so that they are rounded when fused To form corners of the double glass component that are within the dimensions of the lower glass plate, ORIGINAL INSPECTED • 't ' 1 (\ QU IV / Π O) 1