Changeover device and method for changing over winding of web
AssigneeFUJIFILM Corporation
InventorShinji Hikita
Life of this patent
Estimating the term…
Abstract
A web winder of a turret winding type is provided with a first spindle secured to a first drive shaft. A second spindle is secured to a second drive shaft. Positions of the first and second drive shafts are changeable in the web winder. A changeover device changes over winding of a web wound about the first spindle to winding about the second spindle. A cutting drum is disposed on a first side with respect to a web path of the web, and has a cutter for cutting the web in a width direction thereof. A receiving drum is disposed on a second side with respect to the web path opposite to the first side. A drum support arm supports the cutting and receiving drums in a rotatable manner and in a manner of contacting drum peripheral surfaces of the cutting and receiving drums on each other.
Claims20
A changeover device for changing over winding of a web wound about a first spindle to winding about a second spindle in a web winder of a turret winding apparatus, wherein said first spindle is secured to a first drive shaft, said second spindle is secured to a second drive shaft, positions of said first and second drive shafts are changeable in said web winder, said changeover device comprising:
- a cutting drum, disposed on a first side with respect to a web path of said web, and having a cutter for cutting said web in a width direction thereof;
- a receiving drum disposed on a second side with respect to said web path opposite to said first side;
- and
- a single pivotable drum support arm for supporting both said cutting and receiving drums in a manner such that peripheral surfaces of said cutting and receiving drums contact each other.
A changeover method of changing over winding of a web wound about a first spindle to winding about a second spindle in a web winder of a turret winding apparatus, wherein said first spindle is secured to a first drive shaft, said second spindle is secured to a second drive shaft, positions of said first and second drive shafts are changeable in said web winder, said changeover method comprising steps of:
- using a cutting drum and a receiving drum, said cutting drum being disposed on a first side with respect to a web path of said web, and having a cutter for cutting said web in a width direction thereof, and a small-radius portion free from contact with said web, said receiving drum being disposed on a second side with respect to said web path opposite to said first side, and having a small-radius portion free from contact with said web;
- supporting both said cutting and receiving drums with a single pivotable drum support arm in a manner such that peripheral surfaces of said cutting and receiving drums contact each other;
- stopping said cutting and receiving drums when said drum peripheral surfaces thereof are opposed to each other, to form a space for passage of said web in a non-contact manner;
- shifting said drum support arm between a changeover position for causing said drum peripheral surface of said receiving drum to contact said second spindle, and a ready position for keeping said drum peripheral surface of said receiving drum away from said web becoming wound about said second spindle;
- upon setting said drum support arm in said changeover position, causing said cutting and receiving drums to make one rotation, to cut said web, and
- securing a front end of said web being formed by cutting to said second spindle, for changing over winding.
Dependencies are inferred from the claim text.