Valmet-strecker Gmbh

Willi Goetz

The invention relates to apparatus for simultaneously feeding a machine with webs of material from a plurality of web supply rolls, the rolls being mounted in tandem with their winding axes parallel to one another between roll stands situated opposite one another in pairs, and a loading car for carrying new rolls which runs between the bilateral roll stands. To hasten the roll changing procedure, the loading car is capable of receiving simultaneously the entire number of mountable rolls with a spacing between them corresponding to the spacing of the successive roll mounting axes. For this purpose, there are provided automatically operating means for carrying away the roll cores released from the respective roll stands, and means for holding the ends of the indrawn webs of material which can be lowered automatically onto the circumferencial surfaces of the web rolls, and which are combined with means for severing the respective webs of material. A roll preparation section with a loading station is preferably provided ahead of the track carrying the loading car.

Apparatus for feeding a machine with a plurality of webs of material

The invention is directed to a device for automatically splicing a web of material in a web feeding apparatus, in which the web of material is drawn from a supply roll and is stopped in order to change the roll. A severing knife, at least one suction member, a pressure-applying member and a pulley member which can travel on the beam, combined with an anvil for the severing knife, are disposed on an arm-like beam which can be swung toward the circumference of the supply roll. The swinging movement of the beam is limited such that it can approach the roll core only up to a certain minimum distance. However, up to that point the pressure-applying member can bear resiliently against the circumference of the supply roll. The swinging movement of the beam and the movement of the pulley member with the anvil on the beam are controlled such that, when the web of material is stopped to change rolls, the beam swings against the old roll, the pulley brings the web of material in front of the suction member, the anvil moves opposite the severing knife and the web is severed. Thereafter the beam and the pulley member with the anvil return to their starting position and, when a new roll has been mounted, the beam swings against this roll so that the pressure-applying member bears against its circumferential surface to join the old web to the new. Finally the beam swings back to its starting position.

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Seeheim, Germany

Willi Goetz