초록 ▼

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 o

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 transversely with respect to the plane of symmetry on or in a guide member having generally a T-shape with hyperbolic-like curved feed sections.

대표청구항 ▼

In a device for the cross-welding of sealable tubular foil material having inserted therein at spaced intervals deposits of bulky fill material, said device comprising at least two oppositely arranged, swingably mounted sealing jaws respectively engaged in closed cam guideways which are a mirror ima

In a device for the cross-welding of sealable tubular foil material having inserted therein at spaced intervals deposits of bulky fill material, said device comprising at least two oppositely arranged, swingably mounted sealing jaws respectively engaged in closed cam guideways which are a mirror image of each other relative to a plane of symmetry, said cam guideways being located on opposite sides of the plane of symmetry, means for forcibly moving said sealing jaws along said cam guideways such that they clamp there between, over a path extending along the plane of symmetry, an area of the tubular foil material not having any fill material therein and then swing away from the foil material and travel to the next area thereof not having any fill material therein, the improvement wherein compressing members are positioned on said sealing jaws for travel therewith in front of said sealing jaws such that said compressing members compress the foil material at last over a portion of the foil material that is engaged by said sealing jaws, which portion has an area that is predetermined by a width of said sealing jaws, said sealing jaws each having a plurality of levers swingably supported thereon, said compressing members each being supported on respective ends of the associated said levers, said sealing jaws also having arms thereon and tension springs respectively connected between each said arm and a respective said lever at an end of said lever opposite said first-mentioned end thereof.