A TRANSPORT SYSTEM FOR TRANSPORTING A STACK OF FOLDED OR INTERFOLDED SHEETS TO OUTSIDE A MACHINE FOR PRODUCTION OF STACKS OF FOLDED OR INTERFOLDED SHEETS AND TOWARDS AN OUTLET LINE
The transport system (100) comprises a first conveyor belt (1) for restingly receiving a stack of folded or interfolded sheets, and which, as a function of the height of the stack (P) which is to be formed, is vertically translatable to be positionable between at least a first dropped lower position (A1), and at least a second raised upper position (A2). The transport system (100) further comprises a second conveyor belt (2) arranged laterally and externally of the machine (M) for production of stacks of folded or interfolded sheets, between the first conveyor belt (1) and the outlet line (U), which is movable in rotation and which is borne by the support element (3). When the first conveyor belt (1) is translated so as to be positioned in the first dropped lower position (A1), the second conveyor belt (2) is movable into a first operating position (O1) in which it is aligned to the first conveyor belt (1) so as to receive from the first conveyor belt (1) a complete stack of sheets and to transport the stack of sheets towards the outlet line (U), and when the first conveyor belt (1) is translated so as to be positioned in the second raised upper position (A2), the second conveyor belt (2) is movable into a second operating position (O2) and into an inclined configuration so as to receive a complete stack (P) transported by the first conveyor belt (1) to outside the machine (M), and to transport the complete stack (P) received from the first conveyor belt (1) towards the outlet line (U).
A pack (P) of interfolded sheets (S) comprising interfolded sheets (S) of a same length (SI) between a first end (I) and a second end (F) thereof, both ends being separated from those of the other sheets (S), with the W-interfolded sheets (S), that is with four panels (Span) having an identical extension, and having a same orientation; each sheet (S), with the exception of the end sheets (S), is interfolded with two sheets (S) that are both on the same side with respect to the sheet (S) and each of the two sheets (S) is interfolded with the sheet (S) by two panels (Span). Also described are a method and a machine for operating an interfolding machine (1000) which realise the pack (P) from a first succession (T1 ) and from a second succession (T2) of sheets (S) flanked and staggered by half a length (SI), pulling the sheets (S) from the side of the first succession (T1 ) at the first ends (I) and at the second ends (F).
B65H 45/24 - Interfolding sheets, e.g. cigarette or toilet papers
A47K 10/16 - Paper towelsToilet paperHolders therefor
3.
A SYSTEM FOR SUPPORT AND MOVEMENT OF A STACK OF INTERFOLDED SHEETS DURING PRODUCTION OF PAPER PRODUCTS IN STACKS OF INTERFOLDED SHEETS IN AN INTERFOLDING MACHINE
The system for support and movement of a stack of interfolded sheets during production of stacks of interfolded sheets in an interfolding machine comprises: at least a support table supporting a stack of interfolded sheets under formation; a conveyor belt transporting the formed stack towards a work station. The support table is movable from a first raised position to a second raised position to allow formation of a complete stack of interfolded sheets and, after the stack of interfolded sheets has been completed at the desired height, is movable towards the conveyor belt to deposit the stack thereon. Translating means for vertically translating the conveyor belt and adjusting the position of the conveyor belt, and therefore the distance of the conveyor belt, with respect to the second raised position into which the support table is brought for the completion of the formation of the stack of interfolded sheets.
A machine and method (1000) for producing, from strips (N1, N2) of stacks (P) of napkins. The machine comprises at least a supply line (100, 200) of sheet articles (S) identical to one another and folded on at least a fold line (Sp, Sp', Sp") and forming means (10), for forming stacks (P) of sheet articles (S) folded in a V shape, which comprise a first roller (1 ) and a second roller (2) that rotate at a same tangential velocity (w1, w2) in opposite directions, with an offset orientation with respect to one another by half a sheet article (S), and which comprise means and respective retaining means (15, 25) of sheet articles (S) so as to pull the proximal ends (Se, Se') of two successive sheet articles (S) together with the flanked part of the sheet article (S) on the other first roller or second roller (1, 2) until forming a central fold line (Scentr). A stack (P) of napkins.
A METHOD AN APPARATUS FOR SEPARATING TWO SUCCESSIVE STACKS OF INTERFOLDED SHEETS OF A TYPE JOINED BY A PRE-TEAR OR PERFORATION LINE AND FOR OBTAINING A PACK OF INTERFOLDED SHEETS WHEREIN AN END SHEET OF THE PACK IS FOLDED TO DEFINE A GRIPPABLE FLAP FOR A FACILITATED EXTRACTION OF THE SHEETS FROM THE PACK
The method for separating two successive stacks (PA. PB) of interfolded sheets comprises: once having released the formed stack (PA) on a conveyor (O), moving the two support tables (11, 12), one following another, in such a way as to fold the strip(S) of sheets hanging below the successive stack (PB) under formation supported by the pair of separator elements (14, 15), in such a way that, when the two support tables (11, 12) are brought to face one another or moved towards one another to support the successive stack (PB) under formation, an end flap (F3) of the lower sheet of the successive stack (PB) under formation is partially folded and hanging between the two support tables to form a grippable flap (L) for a facilitated extraction of the sheets from the pack (P) which is obtained once the formation of the successive stack (PB) is completed.
The interfolding machine (100) is supplied with at least a continuous strip (N1, N2) of paper material which, by use of cutting means (R), is divided into a first part of continuous strip (N1A) and into a second part of continuous strip (N1B), and comprises a cutting and folding unit (TP) for realising scores in the two parts of continuous strips in order to obtain two series of sheets folded in an interfolded way to obtain two stacks (P1, P2) of distinct interfolded sheets. The interfolding machine comprises a first series of support tables (T1) for transferring the first stack (P1) of interfolded sheets onto a first transport unit (C1) and a second series of support tables (T2) for transferring the second stack (P2) of interfolded sheets onto a second transport unit (C2). The first transport unit (C1) and the second transport unit (C2) are activatable independently of one another so as to transport the first stack (P1) of interfolded sheets and the second stack (P2) of interfolded sheets externally of the interfolding machine through two respective distinct outlets (U1, U2), for the successive respective cutting into respective packs of interfolded sheets.
B65H 35/02 - Delivering articles from cutting or line-perforating machinesArticle or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers from or with longitudinal slitters or perforators
B65H 35/10 - Delivering articles from cutting or line-perforating machinesArticle or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers from or with devices for breaking partially-cut or perforated webs, e.g. bursters
B65H 33/00 - Forming counted batches in delivery pile or stream of articles
B65H 23/28 - Registering, tensioning, smoothing, or guiding webs longitudinally by longitudinally-extending strips, tubes, plates, or wires
A cutting roller (1) is described for an interfolding machine comprising: a main body (2) which is activatable in rotation with respect to the axis thereof (X) and which comprises a first seat (3); an insert (5) which is arranged so as to insert in the first seat (3), which is borne by the main body (2) and which comprises a first through-hole (6); a blade (7) which is arranged interposed between the main body (2) and the insert (5); the main body (2) comprising a second seat (8); a pressing element (9) which is borne by the insert (5) and which is interposed between the insert (5) and the main body (2); support means (10) which are connected to the insert (5) and which are arranged so as to support the pressing element (9) in such a way as to contact the blade (7) during use; fixing means (11) which are positioned so as to cross the first through-hole (6) and to be received in the second seat (8) in such a way as to fix the main body (2) and the insert (5) to one another. The fixing means (11) the pressing element (9), the insert (5) and the main body (2) are configured in such a way that, during use, once the fixing means (11) have been positioned and the main body (2) and the insert (5) have been fixed to one another, the pressing element (9) exerts a pressing force on the blade (7) so that the main body (2) and the insert (5) maintain the blade (7) in position defining a first abutment area (Z1) and a second abutment area (Z2) between one another.
B26D 1/38 - Cutting through work characterised by the nature or movement of the cutting memberApparatus or machines thereforCutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut and coacting with a fixed blade or other fixed member
B26D 7/26 - Means for mounting or adjusting the cutting memberMeans for adjusting the stroke of the cutting member
B65H 45/24 - Interfolding sheets, e.g. cigarette or toilet papers
8.
NTERFOLDING MACHINE AND METHOD FOR VARYING A LENGTH OF SHEET ARTICLES PRODUCED BY THE INTERFOLDING MACHINE
An interfolding machine (10) comprising a first roller unit (3a) which comprises a cutting tool (30a) and a first roller (33a) for guiding a strip, a frame (1) housing the first roller unit (3a) and a beam (50) bearing a first counter-cutting tool (51) and fixed to the frame (1) in a first position in which the first counter-cutting tool (51) has a relative first position with respect to the rotation axis (A) of the first roller (33a) that is such as to cut or score the strip with the cutting tool (30a) of the first roller unit (3a). The beam (50) bears a second counter-cutting tool (52) and is fixable to the frame (1) in a second position in which the second counter-cutting tool (52) has a relative second position with respect to the rotation axis (A) so as to cut or score with the cutting tool (70a) of another roller unit (7a) with a different diameter for producing sheets of a different length. System and method.
B26D 1/38 - Cutting through work characterised by the nature or movement of the cutting memberApparatus or machines thereforCutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut and coacting with a fixed blade or other fixed member
B26F 1/20 - Perforating by slitting, i.e. forming cuts closed at their ends without removal of material with tools carried by a rotating drum or similar support
B26D 9/00 - Cutting apparatus combined with punching or perforating apparatus or with dissimilar cutting apparatus
9.
A SYSTEM WITH AN INTERFOLDING MACHINE, A METHOD AND AN INTERFOLDING MACHINE
A system (100) comprising an interfolding machine (10) with a frame (1) and an interfolding unit (2) comprising a set of roller units (3a, 3b, 3c, 3d) removably housed and independent of one another in seats of the frame (1), a second set of roller units ((7a, 7b, 7c, 7d), interchangeable with the set and couplers (50, 80) for coupling to one another respectively the roller units of the set and of the second set. Each roller unit comprises a first part and a second part and a rotatable roller. Both the couplers (50, 80) comprise a structure (5, 8) and connecting means (6, 9) for connecting the first part and the second part of each roller unit (3a, 3b, 3c, 3d, 7a, 7b, 7c, 7d) to the respective structure (5, 8) and are configured to keep the first and second parts in the positions in which they engage the frame (1). A method for the cut-off change and an interfolding machine (10).
B65H 45/24 - Interfolding sheets, e.g. cigarette or toilet papers
10.
A METHOD AN APPARATUS FOR SEPARATING TWO SUCCESSIVE STACKS OF INTERFOLDED SHEETS OF A TYPE JOINED BY A PRE-TEAR OR PERFORATION LINE AND FOR OBTAINING A PACK OF INTERFOLDED SHEETS WHEREIN AN END SHEET OF THE PACK IS FOLDED TO DEFINE A GRIPPABLE FLAP FOR A FACILITATED EXTRACTION OF THE SHEETS FROM THE PACK
The method for separating two successive stacks (PA, PB) of interfolded sheets comprises: once having released the formed stack (PA) on a conveyor (O), moving the two support tables (11, 12), one following another, in such a way as to fold the strip (S) of sheets hanging below the successive stack (PB) under formation supported by the pair of separator elements (14, 15), in such a way that, when the two support tables (11, 12) are brought to face one another or moved towards one another to support the successive stack (PB) under formation, an end flap (F3) of the lower sheet of the successive stack (PB) under formation is partially folded and hanging between the two support tables to form a grippable flap (L) for a facilitated extraction of the sheets from the pack (P) which is obtained once the formation of the successive stack (PB) is completed.
An interfolding machine (100) comprising means for transforming a rotary motion into an oscillating motion which move the first folding fingers (13) and which are coupled in input to a toothed driven gear (3) receiving drive from a toothed drive gear (2) via a toothed belt or a chain (4) and means (5) for making the first folding roller (11) and the toothed drive gear (2) rotate in synchrony. The interfolding machine (100) advantageously comprises a guide (6) which engages the toothed belt or the chain (4) and which is movable with respect to the frame (10) in such a way as to vary the pathway of one of the branches between the toothed drive gear (2) and the toothed driven gear (3), an actuator (7) which moves the guide (6) so as to regulate the position of the first folding fingers (13) with respect to the angular position of the first folding roller (11) and control means (9).
B65H 45/24 - Interfolding sheets, e.g. cigarette or toilet papers
B65H 29/56 - Article strippers, e.g. for stripping from advancing elements for stripping from elements of machines
12.
A SYSTEM FOR SUPPORT AND MOVEMENT OF A STACK OF INTERFOLDED SHEETS DURING PRODUCTION OF PAPER PRODUCTS IN STACKS OF INTERFOLDED SHEETS IN AN INTERFOLDING MACHINE
The system (100) for support and movement of a stack (P) of interfolded sheets during production of stacks of interfolded sheets in an interfolding machine comprises: at least a support table (10) to support a stack (P) of interfolded sheets under formation up to complete formation of a stack (P) of interfolded sheets of a desired height; a conveyor belt (2), for restingly receiving a formed stack (P) and transporting the formed stack (P) towards a work station. The support table (10) is movable vertically downwards from a first raised position (S1), in order to start to restingly receive the sheets folded in an interfolded way from the unwinding and folding means (V) of the interfolding machine, to a second raised position (82) to allow formation of a complete stack (P) of interfolded sheets and, after the stack (P) of interfoldd sheets has been completed at the desired height, is movable from the second raised position (82) towards the conveyor belt (2) to deposit the stack (P) thereon. Translating means (20) exist for vertically translating the conveyor belt (2) and adjusting the position of the conveyor belt (2), and therefore the distance of the conveyor belt (2), with respect to the second raised position (82) into which the support table (10) is brought for the completion of the formation of the stack (P) of interfolded sheets.
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