Apparatus for selectively forming apertures or holes or venting pinholes in a continuously moving web

US4856396A · kind A · utility

Assignee

• Windmöller & Hölscher KG · DE

Inventors

• Friedhelm Brinkmeier · Lengerich, DE
• Ulrich Eckelt · Tecklenburg, DE

Key dates

• Filing date: Mar 17, 1988
• Grant date: Aug 15, 1989
• Expiry date: Mar 17, 2008

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T83/9389
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

Apparatus for selectively forming a continuously moving web (5) with apertures or holes by means of a punching mechanism consisting of a rotating die (26) and a rotating punch (14) and with venting pinholes by means of a rotating needle bar (34) and a rotating abutment (13). The die (26) or punch (14) and the needle bar (34) are secured to a common shaft (28). The punch (14) or die (26) for cooperating with the die (26) or punch (14) on the common shaft (28) is secured to a first shaft (11) on the opposite side of the web (5). The abutment (13) for cooperating with the needle bar (34) is secured to a second shaft (12) disposed on the opposite side of the web (5). The first and second shafts (11, 12) are movably mounted in pivoted mounting arms (9, 10), which can be fixed in position. A rotation of the first and second shafts (11, 12) will either move the punch (14) or die (26) into engagement with the die (26) or punch (14) or will move the needle bar (31) into engagement with the abutment (13).