Splicing device for splicing two web materials together, unwinder comprising said slicing device and relative method
AssigneeFosber S.p.A.
InventorMauro Adami
Life of this patent
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Abstract
The splicing device comprises two heads (41A, 43A; 41B, 43B), each of which has: a roller (33A; 33B) associated with a clamping bar (93A; 93B) to hold between said roller and said clamping bar an initial edge (L) of the second web material; a counter-pressure member (53A; 53B) cooperating with said roller to press said first and second web materials against each other; and a cutting member (67A; 67B).
Claims25
A splicing device to splice a first web material, coming from a reel being fed, to a second web material, coming from a standing by reel, comprising two heads, each of which comprises:
- a roller associated with a clamping bar to hold between said roller and said clamping bar an initial edge of the second web material;
- a counter-pressure member cooperating with said roller to press said first and second web materials against each other;
- a cutting member;
- wherein said counter-pressure member and said cutting member are carried by a moving unit controlled by an actuator which, through the movement it imparts on said moving unit, causes the first and the second web material to be pinched between said roller and said counter-pressure member, the first web material to be cut by said cutting member and the second web material to be released by a movement of said roller in respect of said clamping bar, the roller being pushed by said counter-pressure member and removed from the clamping bar.
An unwinder comprising means to support and handle reels of web material and a splicing device according to one or more of the previous claims.
Method to splicing together a first web material and a second web material, comprising the phases of:
- arranging a free leading edge of the second web material on a roller, clamping it between said roller and a clamping bar, with a strip of double-sided adhesive material applied to said free leading edge;
- arranging a counter-pressure member opposite said roller;
- arranging a cutting member in the vicinity of said counter-pressure member;
- characterized by causing, with a single actuator:
- a movement to approach and press the counter-pressure member against said roller to pinch between said counter-pressure member and said roller the first web material and the second web material with the strip of double-sided adhesive material between them;
- a movement of the cutting member to cut the first web material.
Dependencies are inferred from the claim text.