Winding device and method for winding web material

A method for winding a material web onto a reel to form a wound roll in an apparatus that includes a rotatable feed roll, a carrying drum movable relative to at least one of the reel and the wound roll and adapted to be pressed against the at least one of the reel and the wound roll, a discharge roll and a pulper, the method comprising:

• introducing a material web over a rotating feed roll;
• guiding the material web from the rotating feed roll to the carrying drum;
• guiding the material over the carrying drum on a support belt;
• applying an external vacuum to a circumferential surface of the carrying drum, which is not contacted by the support belt;
• moving the carrying drum to press against the at least one of the reel and the wound roll;
• forming a winding nip between the carrying drum and the at least one of the reel and the wound roll;
• guiding the support belt over the discharge roll, which is located downstream from the carrying drum, relative to the belt run direction, in the vicinity of a pulper;
• guiding a leading end of the material web into the pulper;
• and
• winding the material web onto the at least one of the reel and the wound roll.

A winding device for winding a material web onto a reel to form a wound roll, said winding device comprising:

• a feed roll;
• a carrying drum;
• a support belt being adapted to guide the material web over the feed roll and the carrying drum;
• an external vacuum device positioned adjacent a circumferential surface of the carrying drum which is not contacted by the support belt and the material web, wherein the external vacuum device has at least one external vacuum box, at least one vacuum port, and sealing elements located in a vicinity of the at least one vacuum port and coupled with the carrying drum;
• a winding nip formed between the carrying drum and the at least one of the reel and the wound roll;
• a discharge roll for guiding the support belt, the discharge roll being located in the vicinity of a pulper, and downstream from the carrying drum, relative to a web run direction;
• and
• a base sled, wherein the feed roll and the discharge roll are mounted on the base sled;
• and
• the discharge roll being adapted to divert at least a portion of the material web to the pulper before feeding the material web to the at least one of the reel and the wound roll.

A winding device for winding a material web onto a reel to form a wound roll, said winding device comprising:

• a feed roll;
• a carrying drum;
• a support belt being adapted to guide the material web over the feed roll and the carrying drum;
• an external vacuum device positioned adjacent a circumferential surface of the carrying drum which is not contacted by the support belt and the material web;
• the external vacuum device including at least one external vacuum box and having at least one vacuum port;
• sealing elements in the vicinity of the at least one vacuum port coupled with the carrying drum;
• a tube, positioned inside of the at least one vacuum box and connected to a vacuum source;
• the at least one external vacuum box including at least one side wall positioned to face the support belt between the feed roll and the support roll;
• a feed side vacuum channel located between the feed roll and the carrying drum and formed beneath the surface of the support belt adapted to carry the material web between the interior side of the support belt, the adjacent side wall of the at least one vacuum box near the feed roll, and the carrying drum, the feed side vacuum channel being bounded at its front end as viewed in the web travel direction by a flexible seal and wherein vacuum is applied to the interior side of the support belt through the carrying drum;
• the at least one external vacuum box including at least one side wall positioned to face the support belt between the carrying drum and the discharge roll;
• a discharge side vacuum channel located between the carrying drum and the discharge roll and formed beneath a surface of the support belt adapted to carry the material web between the interior side of the support belt, the adjacent side wall of the at least one vacuum box near the discharge roll, and the carrying drum, and wherein vacuum is applied to the interior side of the web through the carrying drum;
• a winding nip formed between the carrying drum and the at least one of the reel and the wound roll;
• a discharge roll for guiding the support belt, the discharge roll being located in the vicinity of a pulper, and downstream from the carrying drum, relative to a web run direction;
• a base sled adapted to mount the feed roll and the discharge roll;
• a coupling connecting the base sled with the at least one vacuum box;
• and
• pivot points located in the coupling, wherein the at least one vacuum box is pivotably mounted around a central axis of the carrying drum and the seal of the vacuum box is retained during the relative movement between the carrying drum and the base sled;
• a blowing device located in the vicinity of the discharge roll to assist the release of the material web from the support belt;
• and
• the discharge roll being adapted to divert at least a portion of the material web to the pulper before feeding the material web to the at least one of the reel and the wound roll.

A method for winding a material web onto a reel to form a wound roll in an apparatus that includes a rotatable feed roll, a carrying drum, a discharge roll and a pulper, the method comprising:

• introducing a material web over a rotating feed roll;
• guiding the material web from the rotating feed roll to the carrying drum;
• guiding the material over the carrying drum on a support belt;
• applying an external vacuum to a circumferential surface of the carrying drum, which is not contacted by the support belt;
• applying a vacuum from at least one external vacuum box opposite the peripheral vicinity of the carrying drum not contacted by the support belt and the material web;
• the at least one vacuum box having at least one vacuum port and having sealing elements in the vicinity of the at least one vacuum port contacting the carrying drum;
• forming a feed side vacuum channel located between the feed roll and the carrying drum, wherein the interior side of the support belt faces a side of the at least one vacuum box and the exterior side of the support belt faces the material web;
• applying vacuum through the feed side vacuum channel to the interior side of the support belt in the vicinity between the feed roll and the carrying drum;
• forming a winding nip between the carrying drum and the at least one of the reel and the wound roll;
• guiding the support belt over the discharge roll, which is located downstream from the carrying drum, relative to the belt run direction, in the vicinity of a pulper;
• guiding a leading end of the material web into the pulper;
• and
• winding the material web onto the at least one of the reel and the wound roll.

A method for winding a material web onto a reel to form a wound roll in an apparatus that includes a rotatable feed roll, a carrying drum, a discharge roll and a pulper, the method comprising:

• introducing a material web over a rotating feed roll;
• guiding the material web from the rotating feed roll to the carrying drum;
• guiding the material over the carrying drum on a support belt;
• applying an external vacuum to a circumferential surface of the carrying drum, which is not contacted by the support belt;
• applying a vacuum from at least one external vacuum box opposite the peripheral vicinity of the carrying drum not contacted by the support belt and the material web;
• the at least one vacuum box having at least one vacuum port and having sealing elements in the vicinity of the at least one vacuum port contacting the carrying drum;
• forming a discharge side vacuum channel located between the discharge roll and the carrying drum, wherein the interior side of the support belt faces a side of the at least one vacuum box and the exterior side of the support belt faces the material web;
• and
• applying vacuum through the discharge side vacuum channel to the interior side of the support belt in the vicinity between the carrying drum and the discharge roll;
• forming a winding nip between the carrying drum and the at least one of the reel and the wound roll;
• guiding the support belt over the discharge roll, which is located downstream from the carrying drum, relative to the belt run direction, in the vicinity of a pulper;
• guiding a leading end of the material web into the pulper;
• and
• winding the material web onto the at least one of the reel and the wound roll.

A method for winding a material web onto a reel to form a wound roll in an apparatus that includes a rotatable feed roll, a carrying drum, a discharge roll and a pulper, the method comprising:

• introducing a material web over a rotating feed roll;
• guiding the material web from the rotating feed roll to the carrying drum;
• guiding the material over the carrying drum on a support belt;
• applying an external vacuum to a circumferential surface of the carrying drum, which is not contacted by the support belt;
• applying a vacuum from at least one external vacuum box opposite the peripheral vicinity of the carrying drum not contacted by the support belt and the material web;
• the at least one vacuum box having at least one vacuum port and having sealing elements in the vicinity of the at least one vacuum port contacting the carrying drum;
• forming an edge vacuum zone, located in the vicinity of an end of the carrying drum by subdividing an area enclosed by the carrying drum and the at least one external vacuum box;
• applying the vacuum from the edge vacuum zone;
• forming a winding nip between the carrying drum and the at least one of the reel and the wound roll;
• guiding the support belt over the discharge roll, which is located downstream from the carrying drum, relative to the belt run direction, in the vicinity of a pulper;
• guiding a leading end of the material web into the pulper;
• and
• winding the material web onto the at least one of the reel and the wound roll.

A method for winding a material web onto a reel to form a wound roll in an apparatus that includes a rotatable feed roll, a carrying drum, a discharge roll and a pulper, the method comprising:

• introducing a material web over a rotating feed roll;
• guiding the material web from the rotating feed roll to the carrying drum;
• guiding the material over the carrying drum on a support belt;
• applying an external vacuum to a circumferential surface of the carrying drum, which is not contacted by the support belt;
• applying a vacuum from at least one external vacuum box opposite the peripheral vicinity of the carrying drum not contacted by the support belt and the material web;
• the at least one vacuum box having at least one vacuum port and having sealing elements in the vicinity of the at least one vacuum port contacting the carrying drum;
• forming a winding nip between the carrying drum and the at least one of the reel and the wound roll;
• guiding the support belt over the discharge roll, which is located downstream from the carrying drum, relative to the belt run direction, in the vicinity of a pulper;
• guiding a leading end of the material web into the pulper;
• moving the discharge roll to feed the leading end of the material web to the pulper;
• thereafter moving the discharge roll to feed the material web onto the reel;
• and
• winding the material web onto the at least one of the reel and the wound roll.

A method for winding a material web onto a reel to form a wound roll in an apparatus that includes a rotatable feed roll, a carrying drum, a discharge roll and a pulper, the method comprising:

• mounting the feed roll and the discharge roll on a base sled;
• introducing a material web over a rotating feed roll;
• guiding the material web from the rotating feed roll to the carrying drum;
• guiding the material over the carrying drum on a support belt;
• applying an external vacuum to a circumferential surface of the carrying drum, which is not contacted by the support belt;
• applying a vacuum from at least one external vacuum box opposite the peripheral vicinity of the carrying drum not contacted by the support belt and the material web;
• the at least one vacuum box having at least one vacuum port and having sealing elements in the vicinity of the at least one vacuum port contacting the carrying drum;
• forming a winding nip between the carrying drum and the at least one of the reel and the wound roll;
• guiding the support belt over the discharge roll, which is located downstream from the carrying drum, relative to the belt run direction, in the vicinity of a pulper;
• guiding a leading end of the material web into the pulper;
• and
• winding the material web onto the at least one of the reel and the wound roll.

A method for winding a material web onto a reel to form a wound roll in an apparatus that includes a rotatable feed roll, a carrying drum, a discharge roll and a pulper, the method comprising:

• introducing a material web over a rotating feed roll;
• guiding the material web from the rotating feed roll to the carrying drum;
• guiding the material over the carrying drum on a support belt;
• applying an external vacuum to a circumferential surface of the carrying drum, which is not contacted by the support belt;
• applying a vacuum from at least one external vacuum box opposite the peripheral vicinity of the carrying drum not contacted by the support belt and the material web;
• the at least one vacuum box having at least one vacuum port and having sealing elements in the vicinity of the at least one vacuum port contacting the carrying drum;
• applying vacuum from an internally positioned tube having the at least one vacuum port, the tube being inside the at least one external vacuum box;
• forming a feed side vacuum channel located between the feed roll and the carrying drum, wherein the interior side of the support belt faces a side of the at least one vacuum box and the exterior side of the support belt faces the material web;
• applying vacuum through the feed side vacuum channel to the interior side of the support belt in the vicinity between the feed roll and the carrying drum;
• forming a discharge side vacuum channel located between the discharge roll and the carrying drum, wherein the interior side of the support belt faces a side of the at least one vacuum box and the exterior side of the support belt faces the material web;
• applying vacuum through the discharge side vacuum channel to the interior side of the support belt in the vicinity between the carrying drum and the discharge roll;
• forming a winding nip between the carrying drum and the at least one of the reel and the wound roll;
• guiding the support belt over the discharge roll, which is located downstream from the carrying drum, relative to the belt run direction, in the vicinity of a pulper;
• guiding a leading end of the material web into the pulper;
• blowing compressed air in the vicinity of the discharge roll to assist the release of the material web from the support belt;
• and
• winding the material web onto the at least one of the reel and the wound roll.