DE1056333B - Device for hardening glass panes - Google Patents

Description

PS

SSQ

FEDERAL REPUBLIC OF GERMANY

GERMAN

kl. 32 a 30

INTEHNAT. KL. C 03 b

PATENT OFFICE

EXPLAINING EDITORIAL 1056 333

S 49677 IVc / 32 a

REGISTRATION DATE: 2 3 JULY 1956

NOTICE
THE REGISTRATION
AND ISSUE OF THE
EDITORIAL: APRIL 30, 1959

The invention relates to a device for toughening glass panes with the aim of this to give known properties of the so-called hardened glass.

The toughening of glass panes is carried out in that the surface of the up to the vicinity of the softening point The heated disc cools down quickly, in practice almost exclusively by inflating it of air onto the pane by means of a large number of distributed at right angles over the area to be treated Blow nozzles with generally circular outlet openings is subjected.

In order to achieve an even surface, not restricted to the areas of the disc surfaces opposite the nozzles To achieve an effect, the nozzles are in relative motion to the during inflation Disc offset and thereby the point of impact of the air continuously shifted.

In the known arrangements for hardening flat glass panes, the panes are rocking offset, which have an uneven quenching effect on curved panes.

In another known device, each of the blow nozzles arranged on the blow boxes is used Designed to be adjustable in length and thus adapted to the respective shape of the disc. Besides, there are still the tips of the blower nozzles can be adjusted at right angles to the window, thereby ensuring a vertical impact to allow the blow jets on the disc. It means tedious work, each of the many air nozzles to be adjusted in two places. In addition, this work can only be done by a reliable skilled worker be carried out, since a single blow nozzle that is not precisely adjusted has different cooling effects in the disc. The disadvantages of having so much manual labor in a largely mechanized manufacturing plant are obvious.

The aim of the invention is to enable curved glass panes to be cooled properly even in fully mechanized businesses using the method described in the introduction. It consists in the fact that the wall of the blow boxes carrying the nozzles is designed to be variable in shape and can be fixed in the position and shape corresponding to the curvature of the glass pane by locking elements and can thus be adapted to the contours of the pane to be hardened. Here, the relative movement of the pane and the blow boxes to one another takes place predominantly in the direction of the generatrix of the curved surface of the glass pane, which as a rule has a cylindrical or conical shape. For example, the disk suspended vertically between the blow boxes can be a device for hardening in a reciprocating motion
of panes of glass

Applicant:

Societe Anonyme des Manufactures

des Glaces et Produits Chimiques

de Saint-Gobain, Chauny & Cirey,

Paris

Representative: Dipl.-Ing. R. H. Bahr

and Dipl.-Phys. E. Betzier, patent attorneys,

Herne (Westphalia), Freiligrathstr. 19th

Claimed priority:
France 18 August 1955

Friedrich Jochim, Herzogenrath,
and August Dammers, Merkstein on Herzogenrath

(District of Aachen),
have been named as inventors

30th

be displaced in the vertical plane by a drive device.

As a result of the arrangement according to the invention, the nozzles are always at right angles to the curved glass surface directional, i.e. they act in the same way as the known nozzle arrangements in the case of planar ones Washers and cause a perfectly even pretension with a substantial reduction of signs of iridescence. The occurrence of rocking movements of the window during the blowing process is excluded.

For example, an embodiment of the invention is described in detail with reference to the figures, of which
Fig. 1 is a plan view of a blow box wall,

Fig. 2 is a horizontal view of two blow boxes, partially in section, and

Fig. 3 is a plan view, partly in section, of the two blow boxes;

Fig. 4 is a horizontal section of part of a box on an enlarged scale;

Fig. 5 illustrates in partial section an embodiment of one of the spacers that are used for adjustment serve the inner blow box walls;

909 5Ο8ΛΙ02

Claims (8)

6 and 7 show, in elevation and in vertical section, an embodiment of an adjusting device for the inner blow box walls; 8 and 9 show a front view and top view of a blower nozzle with a slot-like outlet opening. 1 to 4, la and 2b denote the inner walls of the two blow boxes la and Ib which carry the nozzles 3. In contrast to the previous embodiment, these are not rigidly connected to the rest of the blow boxes, but with the interposition of bellows 4 a and 4 fc made of leather, rubber or other material with similar properties. These bellows enable relative movements between the blow box wall and the actual box. The walls la and 2b are supported by four pins 5 which engage in oval holes 6 in the walls. As can be seen from FIG by lengthening or shortening the screw bolts acting on them, independently of the blow boxes, can be bent or arched out or in into any required shape. These bolts 7 are mounted on the rear walls 8a, 8 & of the blow boxes so as to be pivotable on all sides in order to facilitate this deformation of the wall. 5 shows in detail an exemplary embodiment of the bolts 7. The bolt shank 10 is provided with a thread and is axially longitudinally movable in the guide sleeve 9, which has a corresponding internal thread, by rotating the two parts with respect to one another. The guide sleeve 9 is attached to the bottom 8 of the box by a spherical thickening 11, which is movable like a ball joint in a pan 12 with a cap 13 fixed to the blow box. The head 14 or the sleeve is designed as a hexagon and enables it to be screwed onto and unscrewed from the shaft 10. It is secured by a lock nut 15. The free ends of the bolts 10 are connected to the wall 2 a via articulated connections 16 which are attached to stiffening ribs 17 welded onto the wall 2 a. By using two curved pieces 18, which are inserted in the upper and lower region of the blow box between these and the wall, ie do not form a closed frame, the wall 2a can be given a curved shape. The shape of these curve pieces corresponds to that which the wall should assume. The wall can either be fastened directly to these curved pieces by means of screw bolts 19 or can also be braced against them by the bolts 7 described above and shown in FIG. 5. The curvature of the wall 2 a can be emphasized even more that this consists of several z. B. is assembled by hinges 20 interconnected parts (Fig. 4). 8 and 9 show a blower nozzle. It consists of a cylindrical carrier 21, which is in the wall 2 z. B. is attached by a rubber ring 22 which expands to a part 23 and forms a slot-shaped opening. The arrangement of these slot openings in rows according to FIG. 1 has the consequence that the exiting air streams have the same effect as a single jet exiting from a nozzle slot extending over the entire width of the disk. With the aim of achieving a uniform distribution of the blowing media for the glass pane, the slot-shaped nozzles are preferably arranged at such lateral distances from one another that the jets emerging from it touch each other when they strike the pane. Patent \ νs ρ κ γ che 1. A device for hardening bent glass panes by means of a plurality of blow nozzles arranged at the same distance from the disk on blow boxes flowing out of cold air with simultaneous relative movement of the glass pane and blow box, characterized in that the wall (2a, 2b) carrying the blow nozzles (3) Blow boxes (la, Ib) designed to be variable in shape and can be fixed in the position and shape corresponding to the curvature of the glass pane by locking elements. 2. Apparatus according to claim T, characterized in that the wall (2a, 2b ) carrying the nozzles (3) of the blow boxes (la, Ib) is resiliently connected to the blow box rear wall (8a, 8b) and which is attached to the rear wall (8a , 8b) the locking elements supporting the blow boxes and connected at their other ends to the blow box wall (2a, 2b) carrying the nozzles (3) are designed as spacers. 3. Apparatus according to claim 1 and 2, characterized in that the spacers consist of two consist of elements that can be screwed into one another. 4. Apparatus according to claim 1 to 3, characterized in that the spacers in the rear wall (8a, 8b) of the blow box (la, Ib) are pivotably mounted on all sides. 5. Apparatus according to claim 1 and 2, characterized by interchangeably arranged on the blow boxes, the contours of the glass sheet to be treated corresponding curve pieces (18) to support the blow box walls (2a, 2b) occupied by the blow nozzles (3 ). 6. Device according to one of the preceding claims, characterized in that the nozzles (3) supporting walls (2 a, 2 b) of the blow boxes (la, Ib) consist of several articulated part surfaces. 7. Apparatus according to claim 1 to 6, characterized in that the blow nozzles (3) are slot-shaped are formed and extend in rows over the entire width of the disc. 8. Apparatus according to claim 7, characterized in that each row consists of a plurality of nozzles (3) which are so arranged in relation to one another that the adjacent Coolant jets emerging from the slots touch each other when they hit the glass pane. Considered publications:
German patent specifications No. 710 690, 808 880. 1 sheet of drawings © 909 508/102 4. 59