Abstract: The present invention refers to a device (1) for gluing the final edge (4a) of a log of band-shaped material (4), comprising a rolling plane (2) for feeding a log (3) that has at least a through opening (7) for the application of a glue (8) on the log (3) itself. The device comprises a blade (9) provided for the application of the glue (8) on the log (3). The application blade (9) is mobile between a first position, in which it is spaced from the opening (7), and a second position, in which it is disposed close to the through opening (7). The device (1) comprises a pressure container (10) for housing the glue (8) to be fed to the blade (9). The container (10) has a slot (12) facing towards, and close to an application edge (9a) of the blade (9) when the latter is in the first position.

Abstract: A machine for the recovery of white cellulose paper from a trimming roll of white cellulose paper on a cardboard core where the machine has a conveyor belt on which the trimming rolls are arranged with the axis vertical, and the trimming rolls are inserted on a guide bar which, with appropriate actuators, cuts the rolls while the cardboard core is retained on the bar and the paper is allowed to fall and sent to recovery.

Abstract: A gluing group of a final edge of a log including in succession an introducing group into the gluing group of the logs one after the other, an unwinding group of the log associated with means for identifying the final edge, an opening group of the final edge from the log and a glue transfer group on the log, in which the opening group of the final edge and the glue transfer group are housed in a slide structure that is mobile with respect to the unwinding group by a predetermined amount dependent upon the diameter of the log, with rolling transfer means of the log from the unwinding group to the slide structure being foreseen.

Abstract: A rewinder (10) for winding paper (11?) around a core (11) for making a log (11?) comprising, in an upstream position, means for transporting and introducing the core (11) into a channel (12) defined at the top by an upper winding roller (14), supplied from above with the paper (11?) directed towards the channel (12), and at the bottom by a cradle member (13) associated downstream with a lower winding roller (15), the rewinder (10) comprising a third oscillating roller (16) arranged above the lower winding roller (15), the three rollers (14, 15, 16) having respective axes parallel to each other and perpendicular to the forward movement of the paper (11?) and cooperating downstream of the channel (12) to wind the paper (11?) around the core (11) to make the log (11?), further being provided cyclic means for tearing the paper (11?) moving forward on the upper winding roller (14) to identify a final edge (50) and an initial edge (60) as well as means to cause said initial edge (60) to wind on the core (11) intro

Abstract: A winding group for winding paper around a core to make a log which has in an upstream position, means for supplying glue onto the core, means for transporting and inserting the core provided with glue in a channel defined at the top by an upper winding roller, supplied from above with the paper directed towards the channel, and at the bottom by a cradle member associated downstream with a lower winding roller, the winding group comprising a third oscillating roller arranged above the lower winding roller, the three rollers having axes parallel to one another and perpendicular to the forward movement of the paper and cooperating with one another downstream of the channel to wind the paper around the core to obtain the log, further being provided cyclic means for tearing the paper moving forward on the upper winding roller, in which the means for supplying glue onto the core comprise means for depositing a plurality of circle arcs of glue on at least one outer portion of the core.

Abstract: A winding group for winding paper around a core to make a log comprising in an upstream position, means for transporting and introducing the core into a channel defined at the top by an upper winding roller, supplied from above with the paper directed towards the channel, and at the bottom by a cradle member associated downstream with a lower winding roller, the winding group comprising a third oscillating roller arranged above the lower winding roller, the three rollers cooperating downstream of the channel to wind the paper around the core to make the log, further being provided cyclic means for tearing the paper moving forward on the upper winding roller to identify a final edge and an initial edge as well as means to cause the initial edge to wind on the core introduced into the channel, the cyclic means for tearing the paper comprising a rod member rotating around a pin and provided with a head for cyclic cooperation with the upper winding roller for tearing the paper, wherein the head at least in proxim

Abstract: A gluing machine for gluing the final edge of a log successively comprising an introduction group of the logs one after the other into the machine, an unwinding group of the log associated with identification means of the final edge, an opening group of the final edge from the log, a glue transfer group onto the log and a rewinding group of the final edge onto the log, in which the unwinding group of the log comprises a pair of rollers arranged one on top of the other to make a passage for the log, the pair of rollers being selectively for the feeding and for the retention in rotation of the log, at least one inclined surface of free rolling of the log being provided downstream of the pair of rollers.

Abstract: A device, for separating the paper from the cores of rolls or logs of paper or similar products, which is based on a combination of a mandrel that receives trimmings from a roll or log where the mandrel has an outer diameter that is less than the inner diameter of a core of at least one log. The mandrel is provided with at least one axial recess that is directed along several contiguous generatrices of the mandrel. Above the axial recess is arranged a circular rotating blade which cuts both said trimmings the core.

Abstract: An improved device for gluing the end flap of a log and a gluing method which can be implemented in a machine for producing logs, in which the logs (14), which come from a re-reeling machine, are fed to a gluing device (11) comprising in succession a bottom unwinding roller (16) and a top feed belt (17), and, immediately downstream of the unwinding roller (16), at least one stretch of inclined surface (21), of a pre-set length, followed by a vacuum-suction roller (24), set on top of which is a top roller (25), and then by a glue dispenser (27), there being provided on top of the unwinding roller (16) a blower element (19) for blowing an end flap (29) of the log (14) and, underneath, a photo-electric cell (20) for detecting the end flap (29), in which the log fed to the unwinding roller (16) is set with a position of the free end staggered by an angle (?), which is a function of the diameter of the log and of the pre-set length of the stretch of inclined surface (21), in such a way that, when the log thus posi

Abstract: An embossing cylinder (10) comprising a central cylindrical body (11) and supports for bearings (12, 12?) projecting laterally from the circular ends of the central cylindrical body (11), wherein the central cylindrical body (11) comprises an internal cylindrical portion (13) and a coating (14), the coating (14) being provided molten on the internal cylindrical portion (13) and being made of softer material than the material that forms the internal cylindrical portion (13), easy to engrave and with high resistance against abrasion.

Abstract: A gluing unit for an end edge of a log and un method implementable in a machine for making logs, wherein the logs (14), which come from a rereeling machine, are fed towards a gluing unit (11) comprising in succession a lower unwinding roller (16), and an upper feeder belt (17) and, immediately downstream of the unwinding roller (16) at least two sections of sloped surface (21, 23), of pre-selected length, followed by a suction roller with vacuum, positioned above which is an upper roller (25), and then a glue dispenser (27), provided above the unwinding roller (16) being an element (19) for blowing a final edge of the log (14) and beneath a photocell (20) for detecting the final edge (21), provided for being surface (34) for evacuating the glued log, provided for being a timing unit (22) for positioning the free end according to an angle (?) depending on the diameter of the log and the pre-selected length of the sloped surface section (21, 23) in such a manner that the log thus located is positioned on the su

Abstract: Apparatus for eliminating the trimmings of rolls or logs of ribbonlike material coming out of a cutting machine, where at least one roll or log is cut into rolls (14) and small rolls or trimmings (15) from the leading portion of the log and/or trimmings (15?) from the trailing portion of the log, said rolls (14) and trimmings (15, 15?) being made to advance one after another by means of at least one conveyor (11), which acts in a plane of feed (13), in which the plane of feed (13) comprises two sets of fixed supporting elements (16, 16?) for supporting the rolls, said fixed supporting elements being set at a distance apart from one another so as to define an opening (19), in which there are arranged guides (18) for mobile supporting elements (17) for supporting the rolls, the mobile supporting elements (17) being controlled so as to displace to and fro between two sets of fixed supporting elements (16, 16?) and with respect to the opening (19) on the guides, which are set at a distance apart from one another,

Abstract: A method for distributing glue on an end edge of a log, on a log, or on a core for logs which advances logs on a feed surface toward a glue reservoir wherein a fixed blade, coupled to a movable plate, distributes the glue from said reservoir to the log by conveying said plate upwards and discharging said glue to an upper free end of the fixed blade, returning said plate downwards, and passing said log over said fixed blade.

Abstract: A gluing device of an end edge of a log in a machine for producing logs, wherein logs (14) delivered from being formed are fed on an inclined surface (13) disposed under an upper conveyor belt (17) towards a suction roller (18), connected to a vacuum source, the gluing device having a glue applicator (23, 24) disposed downstream of the suction roller (18), in which device the glue applicator comprises a glue picking up member (24) in a container below (23), which can move engaged between a position immersed in the glue and a position engaged with an end edge (19) of a log (14) disposed unwound on the suction roller (18).

Abstract: An improved glue supply device (10) of an embossing-lamination group (100) comprising an embossing roll (12), an embossing counter-roll (11), a glue distribution roll (14) and a glue transporting roll (15), wherein the embossing roll (12) is respectively coupled along two different generatrices with the embossing counter-roll (11) for embossing at least one paper ply (13) and with the distribution roll (14) for distributing the glue on said at least one embossed paper ply (13), and wherein the transporting roll (15) is respectively coupled along two different generatrices with the supply device (10) to collect the glue and with the distribution roll (14) for feeding the collected glue onto the distribution roll (14), wherein one container element (20, 21, 21?) of the glue is envisaged, comprising two side walls (21, 21?) seal coupled against a cylindrical surface portion of the transporting roll (15) defining a supply opening of the glue, wherein at least one of the two side walls (21, 21?) can be moved parel

Abstract: An improved rewinding machine for rewinding and forming a paper roll comprising three rollers (16, 17, 18) with axis parallel to each other and perpendicular to the direction of forward movement of the paper, wherein the two upper and lower winding rollers (16, 17) cooperate with a third roller (18), adapted to keep a given pressure on a roll, or log, to form a finished roll by winding of the paper, which passes on the upper winding roller (16), around a core (12), an introduction group (13) of the cores (12) one after the other into a channel (24) provided beneath the upper roller (16), and a paper stop group (120) which cooperates with at least one first surface portion (16?, 16?) of the upper roller (16) rotating around a pin (128), wherein the stop group (120) comprises at least one paper stop element (120?, 120?) provided with an arm (132?, 132?) rotating around the pin (128) and with a free end made up of a smooth surface (133?, 133?), and in which the at least one first surface portion (16?, 16?) of th

Abstract: An improved rereeling machine (10) for rereeling and forming a roll of paper comprising three rollers (16, 17, 18) with axes parallel to one another and perpendicular to the direction of movement of the paper (11), wherein two upper and lower winding rollers (16, 17) collaborate with a third roller (18), connected by a pair of arms (22) that are able to oscillate, suitable for keeping a certain pressure on a roll, or log, to form a finished roll (19), which comes out from said machine (10) through an outlet port (30) defined between said lower winding rollers (17) and said third roller (18), through winding of said paper (11), which passes onto said upper winding roller (16), about a core (12), said machine (10) also comprising a conveyor with thrusters (15) upstream of said three rollers (16, 17, 18) for the introduction of said cores (12) one after the other into a channel (24) formed below said upper roller (16), a rotary thruster (35) suitable for making said cores (12) proceed in said channel (24), a glu

Abstract: A device for distributing glue on an end edge of a log, on a log or on a core for logs comprising a feed surface (16) of logs or cores (15) towards a glue distribution area, wherein the device comprises a container (13) containing glue (12), wherein disposed inside the container (13) is a fixed blade (18) with one free end (22) facing upwards at the level of an interrupted section (19) of the feed surface (16) on which the logs or cores (15) travel, one behind another, the fixed blade (18) being associated with a plate (27) movable from the bottom upwards, and vice versa, which conveys the glue (12) to the level of an upper free end (22) of the fixed blade (18), discharges it on the free end (22) and returns towards the bottom of the container (13), the moving plate (27) having, at an upper end thereof, an area to collect glue (28, 29) in the container (13) and to discharge glue on the fixed blade when it is taken to the level of the upper end (22) of the fixed blade (18).

Abstract: A device for distributing glue on an end edge of a log, on a log or on a core for logs comprising a feed surface (16) of logs or cores (15) towards a glue distribution area, wherein the device comprises a container (13) containing glue (12), wherein disposed inside the container (13) is a fixed blade (18) with one free end (22) facing upwards at the level of an interrupted section (19) of the feed surface (16) on which the logs or cores (15) travel, one behind another, the fixed blade (18) being associated with a plate (27) movable from the bottom upwards, and vice versa, which conveys the glue (12) to the level of an upper free end (22) of the fixed blade (18), discharges it on the free end (22) and returns towards the bottom of the container (13), the moving plate (27) having, at an upper end thereof, an area to collect glue (28, 29) in the container (13) and to discharge glue on the fixed blade when it is taken to the level of the upper end (22) of the fixed blade (18).

Abstract: A device for the metered distribution of glue on an end edge of a log, a log or a core for log comprising a feed (26) for logs (19) or cores (25) towards a wire (12) wound in a closed circuit on at least two end pulleys (13), at least one of which is continuously rotated by a gearmotor (14), a means for the delivery of glue under pressure (30, 40) located above said wire (12) in a position upstream of a wire branch designed to release a strip (21) of glue on an end edge (18) of a log (19), a log (19) or a core (25) for log, in addition to an element (15) for recovery of the glue (20) arranged below a return branch of the wire.