| 摘要 |
manufacture of three-dimension articles of corrugated paper, possibly folding paper sheets. SUBSTANCE: apparatus includes lengthwise guiding frame with tapered portion and pressure roller type feed mechanism. Lengthwise guiding frame has through groove corresponding to thickness of fold corrugated paper sheet and made in cone-shape tapered portion. Tubular outlet of said portion adjoins to pressure roller mounted on spring-loaded lever. Said roller is geometrically closed by its end inside contour of driven friction coil. Such features provide gradual automatic uniform folding of sheet material that is lengthwise fed to pressure roller mechanism for additionally deforming sheet edge by stretching corrugations. EFFECT: improved design. 3 dwg |
