UNIT FOR STACKING SLATS ON A SUPPORT LADDER WITH DOUBLE CROSSBEAMS FOR THE PRODUCTION OF VENETIAN BLINDS AND METHOD OF INSERTION OF SLATS ON A LADDER WITH DOUBLE CROSSBEAMS

摘要

The invention concerns a unit for stacking slats on a support ladder with double crossbeams for the production of Venetian blinds. The unit comprises: - at least one guide element (2) for a slat (L), which defines an insertion plane (m) on which the slat slides supported along a longitudinal insertion axis X; - a device (20) for guiding a ladder along a positioning direction p incident to the insertion plane; and - means (40) for divaricating at least a pair of crossbeams (Tl, T2); - means (30) for moving the ladder in the guiding device; and - means (51, 52) for positioning a pair of crossbeams exactly in correspondence to the insertion plane (m). The positioning means comprise at least one positioning element (51, 52) having a coupling head (53) by means of which said element can engage a pair of crossbeams. The head (53) comprises a housing seat (54) for a pair of crossbeams and at least one lead-in portion (55, 56) converging towards the seat (54). The positioning element can be moved between a disengagement position and an engagement position. The seat (54) is coplanar to the reference plane (m) at least in the engagement position.