Patent ID: 8397780
Filing Date: 2013-03-19
Classification: E06B,Y10T

Abstract:
1. An automatic machine for manufacturing an insulating glazing unit, comprising: conveyors with a substantially vertical arrangement which include transport devices provided with support and traction elements suitable to operate on edges of a first glass sheet and synchronous transmission means that operate on a face of the first glass sheet along a horizontal axis; a spacer profile application head adapted to apply a spacer profile to the first glass sheet and provided so as to perform a synchronous translational motion along a vertical axis and a synchronous rotary motion along a rotational axis; translation actuator means for actuating said application head in said translational motion; rotation actuation means for actuating said application head in said rotary motion; traction means arranged in said application head for the synchronous traction of the spacer profile in said application head; a spool of the spacer profile which is wound to form said spool, the spacer profile being made of expanded synthetic material and having, on each side thereof, two regions designed for sealants, respectively with an adhesion function and with a sealing function, the spacer profile being provided wound in said spool only with the adhesive function sealant protected by a removable film for feeding the spacer profile by unwinding actuated in a regulated manner and so that said spacer profile is cut in places that form corners and cusps of a formed frame; mechanisms of said application head for applying along a side thereof the spacer profile on a glass sheet discontinuously and intermittently on a further glass sheet of progressive insulating glazing units; a spool unwinding apparatus adapted to unwind said spacer profile from said spool; an extrusion assembly located between the unwinding apparatus of the spool and said traction means of the application head with respect to a feed direction of the spacer frame said unwinding apparatus and said traction means, said extrusion assembly being adapted to apply the second sealing function sealant on said spacer profile unwound from said spool; extrusion nozzles provided at the extrusion assembly and that have modulated, uninterrupted flow-rate, at least during application of the entire spacer profile on a corresponding first glass sheet, constituting, after mating of a second glass sheet, a complete insulating glazing unit; and a compensation assembly arranged between said extrusion assembly and said traction means with respect to said feed direction of the spacer frame, said compensation assembly being provided a positioning wheel adapted to engage the spacer frame to provide a variable accumulation of the spacer frame, and being controlled by synchronous actuation of a motor as a function of the discontinuous operation of the application head and of continuous activity of the extrusion head, for providing continuity of extrusion operation.