A method for extracting a core (1) from a reel (2) of paper is described, where the reel (1) has been wound in a winding station upstream of an extraction station (100) of the core (1); the method comprises the steps of providing an extraction element (3) having an expandable element (4), shaped to enter, when in the non-expanded form, within a cavity (5) defined by the inner wall (6) of the core (1) of the reel (2), the core (1) extends according to a central axis (X) which is substantially horizontal when the reel (2) is positioned for extraction; inserting the expandable element (4) of the extraction element (3) in the cavity (5) of the core (1) on which a roll of paper (20) is wound; expanding the expandable element (4) until it engages the inner wall (6) of the core (1); pulling the extraction element (3) in the opposite direction to that of insertion, to extract the core (1) from the reel (2); bring the expandable element (4) back to the non-expanded form; extracting the expandable element (4) from the core (1). A machine (10) for extracting a core (1) from a reel (2) of paper by means of such method and an extraction station (100) for extracting a core (1) from a reel (2) of paper comprising such machine (10) are further described.
An unwinder for unwinding reels of paper includes a supporting structure partially closed and defining an internal space suitable for unwinding at least one reel; the supporting structure includes: a first lateral support; a second lateral support spaced from the first support; a crosspiece interposed above between the first and the second support defining with the first support and second support the partially closed structure; the unwinder further includes: a first axial unwinding system placed at the first support and configured to axially unwind a first reel; a second axial unwinding system placed at the second support and configured to unwind a second reel; a joining device placed at the crosspiece and configured to make a joint between a first ply belonging to the first reel and a second ply belonging to the second reel to perform a reel exchange.
An embossing group includes: a first embossing roller and at least one embossing unit associated with the first roller. The embossing unit includes a second embossing roller, a third embossing roller, and a sleeve surrounding the second roller and the third roller by coupling them. The sleeve faces the first roller and is configured to contact the first roller. The embossing unit and the first roller are configured to emboss at least one paper sheet wound between the first roller and the embossing unit.
Described is a log ejection group in a rewinding machine that includes an unloading plane of wound logs and a means for slowing down the logs associated with the unloading plane. The slowing down means includes a motorized upper inlet roller to intercept the logs arriving on the unloading plane and a pair of motorized handling rollers located downstream of the upper inlet roller. The pair includes an upper handling roller and a lower handling roller. The lower handling roller is integrated into the unloading plane. The upper inlet roller and the upper handling roller are arranged on an upper structure, which is adjustable in height. The angular speed of the upper inlet roller is greater than the angular speed of the upper handling roller. A method for ejecting a log using the log ejection group is also described.
An embossing group with interchangeable rollers for the surface processing of tissue paper comprises a frame (13) bearing three pairs of steel embossing rollers (17), each pair being movable between a first operative position for embossing two paper plies (11, 12) and rest positions, as well as it comprises two rubber-coated rollers (19, 20) which can be coupled with the pair of embossing rollers (17) placed in the operative position, and it further comprises two pairs of rotating supports (14, 15), wherein each one is provided with three arms (16), each one bearing at the end a locking element (18) for one end of an embossing roller (17), the rotating supports (14, 15) being constrained to the frame (13) rotating around their own central axis.
A paper roll cutting device comprises a rotating motorized arm (20), provided with a rotation axis (21) fixed in the space, and at least one cutting blade (30) to cut at least a paper stick (100) obtaining said paper rolls connected to the rotating motorized arm (20), wherein the rotation axis (31) of the cutting blade (30) is cyclically movable during the rotation of the motorized arm (20), the distance between the rotation axis (21) of the rotating arm (20) and the rotation axis (31) of the cutting blade (30) being progressively cyclically variable during the rotation of the motorized arm (20) with a minimum distance at the lower point of the rotation trajectory of the cutting blade (30).
Disclosed herein is an extraction assembly for producing coreless logs. The extraction assembly includes a rectilinear transporter (20) of a log (11) wound about a disintegrable core (12), and a gripping device (30) for a portion of the core (12) projecting from the log (11), wherein the rectilinear transporter (20) has a transverse transport direction with respect to a log advancement direction of the log (11) along the converting line (100), and has an alternating transport direction back and forth in opposite directions, and the rectilinear transporter (20) contains a first portion for being received within the converting line (100), and a second portion for being placed outside the converting line (100), in which the second portion is aligned with respect to the first portion along the transverse transport direction. Also disclosed herein are a converting line containing the extraction assembly, and methods for producing coreless logs.
An embossing and lamination assembly including two pairs of steel/rubber rolls, between which respectively a first paper ply and a second paper ply are returned, wherein an upper steel embossing roll is coupled with an upper embossing rubber counter-roll and a lower steel embossing roll is coupled with a lower rubber embossing counter-roll, and also including a glue delivery assembly, in contact on a side of the upper steel embossing roll, and a coupling roll, in contact with the opposite side of the upper steel embossing roll, wherein the surface of the upper steel embossing roll and/or of the lower steel embossing roll is heated with a heating device directly associated therewith. A relative embossing and lamination method is also disclosed.
A device for micro-embossing paper includes at least one micro-embossing unit to micro-emboss a wet paper ply. The micro-embossing unit includes a micro-embossing cylinder and a counter cylinder facing the micro-embossing cylinder at an embossing area where the wet paper ply is subjected to micro-embossing, and a heater to dry the wet paper ply. The micro-embossing cylinder includes a side surface partially wrapped by the wet paper ply. The heater heats at least one portion of the side surface partially wrapped by the wet paper ply to dry the wet paper ply.
B65H 37/04 - Appareils délivrant des articles ou des bandes, comportant des dispositifs pour exécuter des opérations auxiliaires particulières pour fixer ensemble des articles ou des bandes, p. ex. par adhésifs, piqûre ou brochage
D21F 11/00 - Procédés de fabrication de longueurs continues de papier ou de carton, ou de nappe humide pour la production de panneaux de fibres, sur des machines à papier
A gluing device of an end edge of a log including an introduction assembly into the gluing device of a log, a handling assembly for a log associated to detection device of the end edge and including a pair of rolls for advancement and holding in rotation of the log, a glue dispensing assembly and a transfer assembly of the log including a transfer plane positioned downstream of the lower handling roller. The glue dispensing assembly is placed in series between the lower handling roll and the transfer plane and includes a transverse tank for the glue, housing cyclically movable glue transfer members. The transverse tank is provided with an upper cover provided with a plurality of openings provided in succession side by side at a set distance along a transverse row. The movable glue transfer members include a plurality of tips provided in succession along a transverse row, alternatively projecting through the relevant openings and retracted within the transverse tank because of the cyclical movement.
B65H 37/02 - Appareils délivrant des articles ou des bandes, comportant des dispositifs pour exécuter des opérations auxiliaires particulières pour appliquer des adhésifs
B65H 19/29 - Fixation à la bobine de l'extrémité libre de la bande enroulée
B05C 1/02 - Appareillages dans lesquels un liquide ou autre matériau fluide est appliqué à la surface de l'ouvrage par contact avec un élément portant le liquide ou autre matériau fluide, p. ex. un élément poreux imprégné du liquide à appliquer sous forme de revêtement pour appliquer un liquide ou autre matériau fluide à des objets individuels
11.
Apparatus and method for unwinding reels and for joining a ply between two reels
An apparatus, and a related method, for unwinding reels and for joining a ply between two reels including a first unwinder adapted to unwind a first reel, a second unwinder adapted to unwind a second reel, a joining device adapted to join a first ply belonging to the first reel with a second ply belonging to the second reel, the joining device including a first pulling bar is able to pull a flap of the first ply along a joining path with the second ply, a second pulling bar is adapted to pull a flap of the second ply along a joining path with the first ply, joining means configured to join, in a joining point along the joining path, the flap of the first ply with the second ply or the flap of the second ply with the first ply, first cutting means configured to cut the first ply or the second ply upstream of the joining point where the joint is performed between the first ply and the second ply, and second cutting means configured to cut the flap of the first ply or the flap of the second ply downstream of the joining point.
A rewinding machine and a related method, the machine including three rollers having axes parallel to one another and perpendicular to the advancing direction of the paper, where two lower and upper winding rollers collaborate with a third oscillable roller under pressure on a roll or log being formed identifying a winding area, where the paper being wound passes over the upper winding roller and the finished roll comes out from an outlet opening defined between the lower roller and the third roller, where the cores for the rolls are fed one after the other by a conveyor and inserted by a thruster in a channel formed beneath the upper roller, the lower and upper winding rollers being supported in rotation at the ends of their axes in a mobile manner and being associated with an actuator device for a translation in a direction parallel to a first straight line joining the axes of the lower and upper winding rollers and symmetrical with respect to a growth straight line of the roll, where the growth straight line of the roll is arranged perpendicular to the first straight line joining the two axes of the lower and upper winding rollers and equally spaced between them.
B65H 19/22 - Changement de la bobine dans les mécanismes d'enroulage ou en liaison avec les opérations d'enroulage
B65H 18/20 - Mécanismes d'enroulage des bandes dans lesquels l'énergie est appliquée à la bobine, p. ex. pour faire avancer la bande d'un mouvement continu la bobine étant portée sur deux rouleaux parallèles dont l'un au moins est entraîné
A device (1) applies adhesive to cores which are used to produce a log includes a moving means (3) configured to cause at least one core (5) to advance along a feed direction (A) and a dispensing means (7) configured for dispensing an amount of adhesive (9) on the core (5). The dispensing means (7) are moveable along an application direction (B) substantially orthogonal to the feed direction (A) and are configured to selectively dispense an amount of adhesive (9) along portions (11) of the core (5) during movement along the application direction (B).
B65H 19/28 - Accrochage de la tête de la bande au nouveau noyau ou à la broche
B05B 13/04 - Moyens pour supporter l'ouvrageDisposition ou assemblage des têtes de pulvérisationAdaptation ou disposition des moyens pour entraîner des pièces les têtes de pulvérisation étant déplacées au cours de l'opération
B05C 13/02 - Moyens pour manipuler ou tenir des objets, p. ex. des objets individuels pour des objets particuliers
B05D 1/42 - Distribution des liquides ou d'autres matériaux fluides, appliqués par des éléments se déplaçant par rapport à la surface à couvrir par des éléments non rotatifs
B05C 5/02 - Appareillages dans lesquels un liquide ou autre matériau fluide est projeté, versé ou répandu sur la surface de l'ouvrage à partir d'un dispositif de sortie en contact, ou presque en contact, avec l'ouvrage
B05C 11/10 - Stockage, débit ou réglage du liquide ou d'un autre matériau fluideRécupération de l'excès de liquide ou d'un autre matériau fluide
B05B 9/04 - Appareillages de pulvérisation pour débiter des liquides ou d'autres matériaux fluides, n'impliquant pas de mélange avec des gaz ou des vapeurs caractérisés par les moyens d'alimentation en liquide ou en autre matériau fluide comportant un réservoir sous pression ou compressibleAppareillages de pulvérisation pour débiter des liquides ou d'autres matériaux fluides, n'impliquant pas de mélange avec des gaz ou des vapeurs caractérisés par les moyens d'alimentation en liquide ou en autre matériau fluide comportant une pompe
B05B 12/12 - Aménagements de commande de la distributionAménagements de réglage de l’aire de pulvérisation sensibles à l'état du liquide ou d'un autre matériau fluide expulsé, du milieu ambiant ou de la cible sensibles à l'état du milieu ambiant ou de la cible, p. ex. à l'humidité, à la température
B05D 1/40 - Distribution des liquides ou d'autres matériaux fluides, appliqués par des éléments se déplaçant par rapport à la surface à couvrir
B05B 13/02 - Moyens pour supporter l'ouvrageDisposition ou assemblage des têtes de pulvérisationAdaptation ou disposition des moyens pour entraîner des pièces
B05C 11/11 - Cuves ou autres récipients à liquides ou autres matériaux fluides
B31B 50/62 - Assemblage des surfaces ou des bords opposésCollage par des adhésifs
14.
DEVICE FOR MICRO-EMBOSSING OF PAPER AND PAPER PROCESSING LINE COMPRISING SAID DEVICE
Device for the micro-embossing of paper (1) comprising at least one micro-embossing unit (3) configured to micro-emboss a wet paper ply (5, 6), where the micro-embossing unit comprises a micro- embossing cylinder (7) and a counter cylinder (17) facing said micro-embossing cylinder at an embossing area (9) where said wet paper ply is subjected to micro-embossing, and heating means (11) configured to dry said wet paper ply. The micro-embossing cylinder comprises a side surface (13) partially wrapped by said wet paper ply. The heating means are configured to heat at least one portion (15) of said side surface partially wrapped by said wet paper ply to dry said wet paper ply. The micro-embossing unit comprises at least one motorised return roller (19, 20), configured to ensure that the contact of said at least one wet paper ply with said counter cylinder occurs exclusively at said embossing area.
Device for the micro-embossing of paper (1) comprising at least one micro-embossing unit (3) configured to micro-emboss a wet paper ply (5, 6), where the micro-embossing unit comprises a micro- embossing cylinder (7) and a counter cylinder (17) facing said micro-embossing cylinder at an embossing area (9) where said wet paper ply is subjected to micro-embossing, and heating means (11) configured to dry said wet paper ply. The micro-embossing cylinder comprises a side surface (13) partially wrapped by said wet paper ply. The heating means are configured to heat at least one portion (15) of said side surface partially wrapped by said wet paper ply to dry said wet paper ply. The micro-embossing unit comprises at least one motorised return roller (19, 20), configured to ensure that the contact of said at least one wet paper ply with said counter cylinder occurs exclusively at said embossing area.
Buffer apparatus for cores made of paper material, for production lines of toilet rolls or absorbent paper rolls or similar paper or absorbent materials
A buffer (1) for paper cores comprises: a structure (2); a plurality of planes (5), arranged one over the other for accumulating cores; a mechanism (6) for feeding the cores associated with the planes (5) to provide the cores being fed; a first device (11) for transferring cores by the mechanism (6) to one of the planes (5), the first device (11) being interposed between the mechanism (6) and the planes (5) and being movable from one plane (5) to another in order to transfer the cores to the latter; a mechanism (16) associated with the planes (5) in order to discharge the accumulated cores; a second transferring device (21), interposed between the planes (5) and the mechanism (16), for transferring cores from the planes (5) to the mechanism (16), the second device (21) being movable from one plane (5) to another in order to empty the planes (5).
B65G 1/08 - Dispositifs d'emmagasinage mécaniques avec des moyens pour que les objets se présentent à l'enlèvement dans des positions ou à des niveaux prédéterminés les objets étant amenés par pesanteur
B65H 19/30 - Levage, transport ou enlèvement de la bobineInsertion du noyau
B65G 47/51 - Dispositifs pour décharger les objets ou matériaux des transporteurs avec distribution, p. ex. automatique, aux points voulus selon des signaux non programmés, p. ex. répondant à la situation de l'approvisionnement au point de destination
B65G 1/12 - Dispositifs d'emmagasinage mécaniques avec supports ou porte-objets mobiles en circuit fermé pour faciliter l'insertion ou l'enlèvement des objets
B65G 1/127 - Dispositifs d'emmagasinage mécaniques avec supports ou porte-objets mobiles en circuit fermé pour faciliter l'insertion ou l'enlèvement des objets le circuit étant entièrement situé dans un plan vertical
17.
Gluing group for a rewinding machine for applying glue to an end edge of a log, rewinding machine bearing such group and related gluing method
A gluing group for a rewinding machine for applying glue to an end edge of a log comprising a delivery roller (12) supported in an idle manner by supporting and translation guiding elements (15, 16), delivery means (20) for delivering a glue line (11′″) on one of the generatrices of the delivery roller (12), a linear actuator (30) connected to said delivery roller (12) to transmit the approaching and distancing movement of the delivery roller (12) against the paper (11) being wound onto a contrast roller (115).
A rewinding machine comprising such gluing group and a related method for gluing the end edge also form part of the invention.
B65H 37/02 - Appareils délivrant des articles ou des bandes, comportant des dispositifs pour exécuter des opérations auxiliaires particulières pour appliquer des adhésifs
B65H 19/22 - Changement de la bobine dans les mécanismes d'enroulage ou en liaison avec les opérations d'enroulage
B65H 19/29 - Fixation à la bobine de l'extrémité libre de la bande enroulée
B05C 1/16 - Appareillages dans lesquels un liquide ou autre matériau fluide est appliqué à la surface de l'ouvrage par contact avec un élément portant le liquide ou autre matériau fluide, p. ex. un élément poreux imprégné du liquide à appliquer sous forme de revêtement pour appliquer un liquide ou autre matériau fluide à un ouvrage de longueur indéfinie uniquement sur des parties déterminées de la pièce
B05C 1/08 - Appareillages dans lesquels un liquide ou autre matériau fluide est appliqué à la surface de l'ouvrage par contact avec un élément portant le liquide ou autre matériau fluide, p. ex. un élément poreux imprégné du liquide à appliquer sous forme de revêtement pour appliquer un liquide ou autre matériau fluide à un ouvrage de longueur indéfinie en utilisant un rouleau
18.
Method and apparatus for joining the ply of a reel of paper in depletion with the initial flap of a new reel
The present invention concerns a method for joining the ply of a reel of paper in depletion with the initial flap of a new reel, as well as an apparatus adapted for carrying out such a method.
Thanks to the method according to the present invention, and to the apparatus suitable for carrying it out, the joining of the reels takes place without using gluing means, like for example the double-sided tape used in known methods, avoiding the relative drawbacks, the adhesion between the plies of the reels to be joined taking place by electrostatic attraction.
A device for rewinding and forming a paper roll in a rewinding machine comprising three rollers with parallel axes and perpendicular to the paper feeding direction, wherein two lower and upper winding rollers supported on a frame cooperate with a third swivel roller in pressure on a roll being formed, the paper being wound provided with a series of transverse piercing and weakening lines spaced apart according to regular intervals along their longitudinal development passing on the upper winding roller and finished roll exiting from an output opening defined between the lower roller and the third roller, the cores for the rolls fed one after the other by a conveyor, wherein mechanical tearing means are placed in the upper roller along its development facing towards the side of the paper facing towards the upper roller to positively act directly at a piercing line and cause the tearing of the paper.
B65H 18/16 - Mécanismes d'enroulage des bandes dans lesquels l'énergie est appliquée à la bobine, p. ex. pour faire avancer la bande d'un mouvement continu par un rouleau de friction
B65H 19/26 - Coupure de la bande sur son trajet vers la bobine à garnir
B65H 19/22 - Changement de la bobine dans les mécanismes d'enroulage ou en liaison avec les opérations d'enroulage
20.
Method for producing a paper roll with smooth plies and relative roll
A method for producing a paper roll by conveying a first smooth ply between an upper embossing roll with first projections defining a decorative motif, and a glue distribution or cliché roll; maintaining the cliché roll side by side to the upper embossing roll, the first ply interposed between the upper embossing roll and the cliché roll and subjected to incisions and to glue deposits at the first projections on one side of the first ply facing towards the upper embossing roll and on the opposite side of the first ply facing towards the cliché roll; conveying a second ply between the upper embossing roll and a coupling or marriage roll; maintaining the marriage roll side by side to the upper embossing roll by exerting a coupling pressure to perform the final coupling between the first ply and the second ply at the glue deposits forming a multilayer paper.
D21F 11/08 - Procédés de fabrication de longueurs continues de papier ou de carton, ou de nappe humide pour la production de panneaux de fibres, sur des machines à papier du type à forme ronde papier ou carton composé de plusieurs couches
Machines for transforming paper, embossing cylinders and
converting machines for tissue paper and kitchen paper,
bearings for industrial operations, linear guides.
Machines for transforming paper and cardboard, namely, paper cutting machines and paper coating machines; machine parts, namely, embossing cylinders for tissue paper and kitchen paper; converting machines for converting paper from roll form into end-use products in the nature of tissue paper and kitchen paper; machine parts, namely, bearings for industrial operations; linear guides in the nature of conveyor lines; machines for the making of paper, cardboard, paper tissue and non-woven paper; machines for the making of paper products, particularly products made of cardboard, high-grade paper, paper tissue and non-woven papers, namely, bond paper, tissue paper and cardboard containers; machines for the treatment and transport of webs, panels and sheets of cardboard, paper, tissue and non-woven papers, namely, cutting, perforating and stamping machines for the aforementioned materials; [ machines for stacking sheets and panels of cardboard, paper, plastic and fiberglass; machines for industrial use for binding layers of materials, namely, stacks of paper and cardboard; machines for industrial use for zig-zag folding paper webs; machines for the making and packing of sanitary products, namely, sanitary products made of paper in the nature of sanitary paper towels and sanitary pads of paper; ] machines for packing paper products, namely, products made of cardboard, high-grade paper, tissue and non-wovens in the nature of bond paper, tissue paper, cardboard containers
Paper conversion machines, embossing cylinders and converting machines for rolls of toilet paper and kitchen paper, bearings for industrial applications, linear guides.
