Bag sealing device

US4947618A · kind A · utility

Assignee

• ROVEMA-Verpackungsmaschinen GmbH · DE

Inventors

• Werner Schneider · Erbach, DE
• Walter Baur · Zöblitz, DE

Key dates

• Filing date: Sep 22, 1988
• Grant date: Aug 14, 1990
• Expiry date: Sep 22, 2008

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B29C65/7451
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

A device for the cross-welding and/or cross-cutting of sealable foil material having inserted therein at regular intervals a particularly bulky fill material. Swingably mounted sealing jaws are forcedly guided in closed cam guideways which are an inverted mirror image of one another and located on opposite sides of a plane of symmetry (E) such that they each clamp foil material therebetween at a location whereat no fill material is located and along the plane of symmetry. The sealing jaws then swing out and away from the foil material and travel to the next area which does not contain fill material. Forcedly guided compressing members are arranged to travel in front of the sealing jaws, which compressing members compress the foil material at least over the sealing area determined by the sealing-jaw width. The compressing members are cylindrical, for example in the form of circular rods, rollers, cage bars and the like, preferably spring loaded and are relatively movable with respect to the sealing jaws. Swingably supported levers on the sealing-jaw carriers are used for mounting. Rollers are associated on both sides with the compressing members, which rollers roll along transversel…