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AssigneeBayerische Berg-, Hutten- und Salzwerke AG
InventorsGunter Nudinger, Heinrich Collin, Hans Moosburger
Estimating the term…
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.
In a device for connecting a first web of a web-shaped material unwinding from a first roll to the beginning of a second web of a web-shaped material unwinding from a second roll and having at least one transfer element and releasable engaging means for releasably coupling said second web to said transfer element, said transfer element effecting a pressing of said beginning of said second web to said first web, an adhesive for connecting said first web to said beginning of said second web, and a cutting device for cutting the first web downstream of a point where said second web is attached to said first web, the improvement comprising a guide roller for guiding said first web thereover, first support means for supporting said guide roller for movement along a path generally parallel with an exiting strand of said first web therefrom, resilient means, one end of which is connected to said guide roller, for biasing said guide roller to a first position, weight means, second support means for supporting said weight means, cable means extending between said weight means and the other end of said resilient means, third support means for supporting said cable means to effect a vertical movement of said weight means from off said second support means when the tension force applied by said first web to said guide roller exceeds the return force of said resilient means and the weight of said weight means, the return force of said resilient means increasing as said guide roller is moved along said path away from said first position in response to an increased tension force being applied to said first web, the magnitude of said weiight means and said return force of said resilient means being greater than a normal tension force of said first web on said guide roller during normal operation thereof to thereby effect a holding of said guide roller at said first position.
Dependencies are inferred from the claim text.