Splicing device for web materials, unwinder including the splicing device, and operating method
AssigneeGuangdong Fosber Intelligent Equipment Co., Ltd.
InventorMauro Adami
Life of this patent
Estimating the term…
Abstract
The splicing device for splicing a trailing edge of a first web material to a leading edge of a second web material includes members defining a feed path of the web material. The device also includes a first cutting member and a second cutting member, cooperating with the first cutting member. One of the two cutting members is provided with a movement transverse to the feed path of the web material, to move the cutting member from an operating position, in which it is in front of the other cutting member, to an idle position, withdrawn with respect to the feed path of the web material.
Claims20
A splicing device for splicing a trailing edge of a first web material to a leading edge of a second web material, comprising:
- members defining a feed path of the web material;
- a first cutting member;
- a second cutting member, cooperating with the first cutting member;
- wherein at least one of said first cutting member and said second cutting member is provided with a movement transverse to the feed path of the web material to move said at least one of said first cutting member and said second cutting member from an operating position, which is in front of another cutting member not in an operative position, to an idle position, withdrawn with respect to the feed path of the web material.
An unwinder for unwinding rolls of web material, comprising:
- an assembly rotating about a substantially horizontal rotation axis, having a first seat for a first roll of web material and a second seat for a second roll of web material, in the first seat and in the second seat each of the roll of web material being respectively supported with their axis substantially parallel to the rotation axis of the rotating assembly;
- a splicing device comprising
- members defining a feed path of the web material;
- a first cutting member;
- a second cutting member, cooperating with the first cutting member;
- wherein at least one of said first cutting member and said second cutting member is provided with a movement transverse to the feed path of the web material to move said at least one of said first cutting member and said second cutting member from an operating position, which is in front of another cutting member not in an operative position, to an idle position, withdrawn with respect to the feed path of the web material.
A method for splicing a trailing edge of a first web material to a leading edge of a second web material, comprising:
- feeding the first web material along a feed path;
- arranging a first cutting member and a second cutting member, respectively on a first side of the feed path and on a second side of the feed path, with one cutting member in front of the other cutting member;
- arranging and retaining the leading edge of the second web material in proximity of the feed path;
- cutting the first web material generating the trailing edge of the first web material and splicing the trailing edge of the first web material to the leading edge of the second web material;
- moving one of said first cutting member and said second cutting member transverse to the feed path and withdrawing said one of said first cutting member and said second cutting member with respect to the feed path;
- moving the second web material toward the other of said first cutting member and second cutting member;
- returning the first cutting member and the second cutting member one in front of the other with the second web material arranged therebetween and feeding the second web material along the feed path between the first cutting member and the second cutting member.
Dependencies are inferred from the claim text.