| 摘要 |
<p>An automatic welding group of a film for shrink packers comprising two unwinding supports (12), each for a reel of film (11), a locking clamp (20) of an initial end (111B) of the film of a new reel (11B) and a side by side welding device (30) of a portion of film of a reel that is running out (11A) with a portion of film of the new reel (11B), comprising two mobile welding bars (51A, 51B), in which the welding device (30) comprises a fixed welding counterbar (35) and, above it, two opposite seats (37) for the alternative positioning of the locking clamp (20), in which the locking clamp (20) constitutes a separate and free movable element with respect to the welding device (30), the welding device (30) also comprising tightening means (44) for the welded film and a brake (43) of the film (11). A relative method for automatically welding a film for shrink packers is also part of the invention.</p> |
