Bayerische Bert- Hutten- Und Salzwerke Ag

Bayerische Berg-, Hutten- Und Salzwerke Ag

Heinrich Collin

Hans Mosburger

Gunter Nudinger

Hermann Josef Brandl

Hans Moosburger

Gunther Lau

An apparatus for fixing the leading edge of a second rolled web to a point at or near the trailing edge of a first rolled web. The present invention is an improvement over the disclosure of U.S. Pat. No. 3,837,954, issued Sept. 24, 1974, wherein the leading edge of a second roll was adhered to a transfer roll while the trailing end of the first web was contacted by a suitable base roll. In this improvement, a fluid operated carriage forms a resiliently braked loop following the base roll and permits the web at the base roll to slow as needed to pick up the second web while not diminishing the speed of exiting of the web from the transfer apparatus. The carriage is moved in one direction to compensate for this change in relative speeds. The carriage is then caused to move in the opposite direction to generate a smoothly increasing force resisting such yielding then progressively increasing the pull on the web and its speed of withdrawal from the second roll. Thus, adherence between the webs is completed by the time tension is placed onto the point of adherence for the acceleration of the second roll.

Apparatus for connecting a first web of a web form material, which web

An apparatus for connecting a first web of a web-shaped material unwinding from a first roll with the beginning of a second web of a web-shaped material unwinding from a second roll. The beginning of the second web is cemented to a transfer element by means of an adhesive area applied thereto. The transfer element is then moved toward the first web and/or the first web is moved toward the transfer element and the transfer element is accelerated to a speed corresponding to the speed of the expiring first web while a loose initial region of the second web is concurrently pulled tighter and the beginning of the second web is then cemented to the first web by means of another adhesive area applied to the beginning of the second web facing the side averse the first adhesive area and is pulled away from the transfer element. The acceleration of the second roll is carried out by the tension exerted by the first web after the beginning of the second web has been cemented to the expiring first web, and tension overloads and sudden loads exerted on the webs and the points of cementation between the web during initial acceleration being prevented by conducting the respective web over a force storage means which yields under increased tension on the path of the web to further processing stations.

Device for connecting an expiring first web of a web-shaped material

Growing community of inventors

Munich, Germany

Heinrich Collin