US 10,479,634 B2Granted

Machine and method for producing bobbins of stretch film

AssigneeAmut S.P.A.

InventorVander Provera

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Abstract

A winding machine (10) is disclosed comprising at least one reel holder (12) mounted on a supporting frame (11) and rotatable around its own axis (13), and a plurality of reels (1-4) mounted on the holder (12) and integrally rotatable therewith so that at least one first reel (1) is in at least one operative winding position of a bobbin (5). It is further described a respective method for the in-line winding of bobbins (5) of stretch film (6), comprising the steps of rotating a core (7) on a reel (1) in an operative winding position to wind the film (6) onto the core (7), positioning a contact roll (15a) in at least one proximal contacting position in which it contacts the winding bobbin (5) for facilitating the peripheral winding of the stretch film (6) on the core (7), bringing the reel (1) from the operative winding position of the bobbin (5) to an operative unloading position of the bobbin, positioning an accompanying roll (15b) in at least one proximal contacting position in which it contacts the bobbin (5) for facilitating the peripheral winding of the stretch film (6) on the bobbin (7), transversally cutting the stretch film (6) and unloading the bobbin (5). The movement of the contact roll (15a) and the accompanying roll (15b) is carried out by means of electric actuators (18a, 18b).

Claims14

Dependent claims

A winding machine (10) to wind bobbins (5) of stretch film (6) comprising:

a supporting frame (11),
at least one reel holder (12), mounted on said supporting frame (11) and rotatable around its own axis (13),
a plurality of reels (1-4) mounted on said at least one holder (12) and integrally rotatable therewith so that at least one first reel (1) is in at least one operative winding position of a bobbin (5),
at least one contact roll (15a) adapted to cooperate with said at least one first reel (1) in said operative winding position of a bobbin (5), wherein said contact roll (15a) is movable between at least one proximal contacting position in which it contacts the bobbin (5) being wound, in order to facilitate the peripheral winding of the stretch film (6) on said bobbin (5), and at least one distal position from said bobbin (5),
at least one accompanying roll (15b) movable between at least one distal position from the bobbin (5) being wound and at least one proximal contacting position in which it contacts the winding bobbin (5) in order to facilitate the peripheral winding of the stretch film (6) on said bobbin (5) during rotation of said at least one reel holder (12) so that said reel (1) can switch from said operative winding position of the bobbin (5) to an operative unloading position of the bobbin (5),
further comprising means (24) for determining the position of said rolls (15a, 15b) with respect to said bobbin (5) being wound
said contact roll (15a) and said accompanying roll (15b) being respectively coupled with at least one first operating arm (16a) and at least one second operating arm (16b) which are rotatable around respective rotation axes (17a, 17b) parallel to the rotation axis of the bobbin, and further comprising electric actuators (18a, 18b) for rotating said operating arms (16a, 16b).

4 more elements

A method for the in-line winding of bobbins (5) of stretch film (6) in a machine (10) comprising at least one reel holder (12) mounted on a supporting frame (11) and rotatable around its own axis (13), and a plurality of reels (1-4) mounted on said at least one holder (12) and integrally rotatable therewith so that at least one first reel (1) is in at least one operative winding position of a bobbin (5), the method comprising the steps of:

a) rotating a core (7) on a reel (1) in an operative winding position to wind the film (6) on said core (7);
b) positioning at least one contact roll (15a) in at least one proximal contacting position where it contacts the bobbin (5) being wound to facilitate the peripheral winding of the stretch film (6) on said core (7);
c) bringing said reel (1) from said operative winding position of the bobbin (5) to an operative unloading position of the bobbin;
d) positioning at least one accompanying roll (15b) in at least one proximal contacting position in which it contacts said bobbin (5) for facilitating the peripheral winding of the stretch film (6) on said bobbin (7) during said step c);
e) transversally cutting the stretch film (6);
f) unloading said bobbin (5),
wherein the movement of said contact roll (15a) and said accompanying roll (15b) is carried out by electric actuators (18a, 18b), and wherein positions of said contact roll (15a) and said accompanying roll (15b) with respect to said winding bobbin (5) are determined.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/571,056Filed 5 May 2016
Priority: EP 151663505 May 2015
Published: US 2018/0162669 A114 Jun 2018
Granted: 19 Nov 2019
Term ends: Not estimatedThe source records don’t support an estimate.

Classification18 codes

B65H 19/2223
The web roll being driven by a winding mechanism of the centre or core drive type: turret-type with more than two roll supports
B65H 18/26
Web-winding mechanisms: mechanisms for controlling contact pressure on winding-web package, e.g. for regulating the quantity of air between web layers
B65H 19/2253
The web roll being driven by a winding mechanism of the nip or tangential drive type: and the roll being displaced during the winding operation
B65H 19/26
In winding mechanisms or in connection with winding operations: cutting-off the web running to the wound web roll