Patent ID: 11639628

Abstract:
A machine (1000) for the automatic sealing of the perimetric cavity of the insulating glazing unit (1, 1′, 1″, 1′″), the geometry of which is irregular in terms of flatness and shape with respect to the theoretical one, constituted by at least two glass panes (2, 2′, 2″, 2′″, etc.) having a rectangular or other than rectangular shape and at least one spacer frame (3, 3′, 3″, etc., 5, 5′, 5″, etc.) located proximate to the perimeter at a finite distance from the margin of the glass panes or of the smaller glass pane, the glass panes being optionally aligned or offset along one or more or all the perimetric sides and the thickness both of each glass pane (2, 2′, 2″, 2″, etc.) and of each spacer frame (3, 3′, 3″, etc., 5, 5′, 5″, etc.) and therefore the total thickness of the insulating glazing unit (1) being variable from one insulating glazing unit to another, constituted by: at least one synchronous conveyor (100) having the function of support and displacement [together with the synchronous suction cup carriage (100′)] of the insulating glazing unit (1) along the horizontal axis H during the sealing cycle; at least one synchronous carriage (200) which runs along vertical guides along the vertical axis V and is provided with the sealing head (300), the head having a synchronous rotary motion θ so that the sealing nozzle (301) is oriented so as to be tangent to the perimeter of the insulating glazing unit (1), or in any case the relative movement between the insulating glazing unit (1) and the sealing nozzle (301) being able to occur by means of different mechanisms and the arrangement of the insulating glazing unit (1) being any, and fed by one or more, in case of a plurality of types of sealants, synchronous volumetric units for the dosage of bi-component (400) or mono-component (450) sealant, each assembly being constituted, for the two-component case, by a dosage unit for the base product and by a dosage unit for the catalyst product, the flow rates of which are adjusted: as a function of the stoichiometric dosage ratio, for the bi-component case, and of the dimensions of the cavity of the perimetric edge comprised between the glass panes (2, 2′, 2″, 2′″, etc.) and the outside curve of the spacer frame (3, 3′, 3″, etc., 5, 5′, 5″, etc.) and of the relative speed between the nozzle (301) and the perimeter of the insulating glazing unit (1), so as to fill the cavity up to the extreme margin of the smaller glass pane or of the glass panes if aligned, wherein the devices (304, 501, 502) interfaced and operating in connection with the perimetric cavity of the insulating glazing unit (1) during the corresponding sealing follow without discontinuity the actual position of the cavity along the transverse axis Z, which is different from the theoretical one due to non-flatness of the insulating glazing unit (1).