Method and apparatus for winding up traveling webs

Claim 3

A method according to claim 1 comprising varying the magnitude of said applied load so that the effective contact pressure force between the wound roll and the winding member is maintained substantially constant during the winding operation.

Claim 4

A method according to claim 1 comprising varying the magnitude of said applied load so that the effective contact pressure force between the wound roll and the winding member is varied in a predetermined manner during the winding operation.

Claim 5

Web-winding apparatus to which a web is continuously introduced comprising a winding core positioned on a machine frame transversely with respect to the oncoming direction of the web for receiving said web to be wound to form a cylindrical wound roll, a winding means in pressure engagement with the generated surface of the wound roll along a meridian line thereof and operable to provide uniform winding tightness, said winding means including a winding roller being disposed and arranged such that the web is directed from the oncoming direction to a direction tangential with respect to the generated surface of the wound roll, and means adjusting the meridian line of said winding roller so that said meridian line is adjusted in the form of a straight line independently of the outer load of the zone of pressure engagement.

Claim 6

Web-winding apparatus to which a web is continuously introduced comprising a winding core positioned on a machine frame transversely with respect to the oncoming direction of the web for receiving said web to be wound to form a cylindrical wound roll, a winding means in pressure engagement with the generated surface of the wound roll along a meridian line thereof and operable to provide uniform winding tightness, said winding means including a winding roller being disposed and arranged such that the web is directed from the oncoming direction to a direction tangential with respect to the generated surface of the wound roll, and means adjusting the meridian line of said winding roller so that said meridian line is adjusted in the form of a straight line independently of the outer load of the zone of pressure engagement.

Claim 7

Web-winding apparatus according to claim 4 wherein said winding means comprises two support rollers of a double support roller winder, said winding roller being one of said two support rollers.

Claim 8

Web-winding apparatus according to claim 4 comprising a loading roller positioned vertically above said wound roll, means for providing pressure engagement of said loading roller with the generated surface of said wound roll along a meridian line thereof, and means for adjusting the meridian line.

Claim 9

Web-winding apparatus according to claim 6 wherein said winding roller comprises a hollow cylinder, a supporting beam extending through said hollow cylinder and extending over the end surfaces at each end, means for rotatably mounting said extending ends on said machine frame, means for sealing the ends of the hollow cylinder against said beam ends, means for sealing the supporting beam in the zone of the cross diameter perpendicular to the direction of the pressure engagement against the inner face of said hollow cylinder, thereby to define a pressure chamber, said pressure chamber extending between said supporting beam and the portion exposed to pressure engagement with the wound roll and the shell or said hollow cylinder, means connecting said pressure chamber to a pressure source; and means for rotating said supporting beam with respect to the machine frame into a position corresponding to the prevailing direction of the pressure engagement between said wound roll and said hollow cylinder.

Claim 10

Apparatus according to claim 7 further comprising means for adjusting the pressure in said pressure chamber.

Claim 11

Web-winding apparatus according to claim 7 wherein said means for rotating said supporting beam is operably connected to said loading roller thereby providing for adjustment of the angle of said supporting beam relative to the diameter of said wound roll.

Claim 12

Web-winding apparatus according to claim 9 comprising a pantograph linkage means connected to said loading roller, said linkage means comprising quadrangle links symmetrical with respect to said winding means and consisting of four equally long bars, a reversing pulley rotatably mounted in the plane of symmetry of said winding means adjacent said loading roller, a rope passing over said pulley, one end of said rope being attached to said machine frame while the other end is attached to said loading roller.

Claim 13

Web-winding apparatus according to claim 8 comprising a throttle valve for adjusting the pressure in said pressure chamber, said throttle valve having a housing attached to one of two mutually movable parts of said pantograph linkage means, said valve means having a valve body attached to the other of the two parts of said pantograph linkage means in such a manner that as the loading roller moves under the influence of the increasing diameter of said wound roll, the through flow cross section for the pressured medium in the throttle valve increases.

Claim 14

Apparatus according to claim 6 comprising a pressure cylinder having a piston rod connected to said loading roller to thereby produce an adjustable counteracting force whereby the linear pressure applied by the loading roller on the wound roll is decreased as the diameter of the wound roll increases.

Claim 15

Apparatus according to claim 6 comprising means for causing said loading roller to apply a linEar pressure on said wound roll, said last said means comprising spindles and worm gears driven by torque-adjusted motors whereby said linear pressure decreases as the diameter of said wound roll increases so that a linear pressure between said winding means and the wound roll remains constant during the entire winding operation.