Abstract: Support pin for supporting reels of paper material, comprising an outer side (PX) and an inner side (PN), with the inner side (PN) that is adapted to be inserted into a reel (1) of paper material and with the outer side (PX) that remains on the outside of the same reel (1) when the inner side (PN) is inside the reel (1), said outer side (PX) being provided with a hooking portion (3) adapted to be engaged by means (CP) adapted to vertically move the pin (P). The outer side (PX) of the pin (P) is constituted by a shank (2) whose longitudinal axis coincides with the longitudinal axis (x-x) of the pin (P) and said hooking portion comprises an eyelet formed on the shank (2) and delimited by two parallel arms (30) that emerge radially from the shank (2) and are joined by a body (31) parallel to said longitudinal axis (x-x).

Abstract: Unwinder for paper converting, comprising a support (1) adapted to support a reel (B) from which a web of paper material is unwound and comprising dragging means acting by contact on said reel (B) and adapted to impose a rotation of the reel coil about the respective longitudinal axis (x) with a predetermined speed, the diameter of the reel (B) varying while the latter rotates. The dragging means have a variable configuration. The unwinder comprises reconfiguration means adapted to vary the configuration of the dragging means on the basis of the instantaneous diameter of the reel (B) and control means (5; EU) adapted to control said reconfiguration means such that the contact between the reel (B) and control the dragging means takes place on a contact area (200) having an angular extension (a) substantially constant while the diameter of the reel (B) varies.

Abstract: Method for the handling of parent reels in paper converting plants, comprising the following steps: (a) providing at least one platform with a base adapted to support a parent reel in a waiting station and at least one unwinder (S) adapted to receive said reel in an unwinding station where the parent reel is unwound; (b) positioning a parent reel (1) on the platform at the waiting station; (c) transporting the parent reel (1) along a predefined path from said platform to said unwinder (S) by means of a bridge crane (CP) equipped with movable arms (BC). The step (c) is preceded by a first step consisting in the temporary association of two pins (P) to the arms (BC) of the bridge crane (CP) and by a second step consisting in inserting the two pins (P) in two opposite bases of the parent reel (1) using the same arms (BC); and the step (c) involves the transport of the reel (1) along a path comprising at least one ascending or descending portion with the pins (P) thus inserted into the parent reel (1).

Abstract: Device for handling paper reels, comprising a bridge crane (CP) with movable arms (BC) each of which is adapted to engage a pin (P) insertable into a corresponding side of a reel (1) and a platform (PB) adapted for supporting the reel (1). The device further comprises detection means adapted to detect load variations on said arms (BC) during insertion of the pins (P) inside the reel (1), and moving means adapted to achieve a relative movement between the reel (1) and the arms (BC) when the absolute value of a variation of the load detected by said detection means exceeds a predetermined limit up to bring said value below the predetermined limit.

Abstract: Machine for the production of cardboard tubes, comprising a mandrel (M) on which a cardboard tube (T) is formed by the helicoidal winding of a cardboard strip (S) on said mandrel (M); a winding member (WB) adapted to interact with the mandrel (M) and the cardboard strip (S) to realize said helicoidal winding, an inlet section for drawing-in the cardboard strip (S); dragging means adapted to drag the cardboard strip (S) introduced in said inlet section, along a predetermined dragging direction (TD), said dragging means being active during a drawing-in step; cutting means for configuring the cardboard strip (S) in a configuration suitable for winding it on the mandrel (M); and guide means adapted to guide the cardboard strip (S) towards the mandrel (M) at the end of said drawing-in step, said guide means being disposed and acting between the dragging means and the mandrel (M).

Abstract: Expandable pin for supporting reels of paper material, comprising an outer side (PX) and an inner side (PN), with the inner side (PN) that is adapted to be inserted into a reel (1) of paper material and with the outer side (PX) that remains on the outside of the same reel (1) when the inner side (PN) is inside the reel (1). An outer surface of said inner side (PN) is formed by more sectors (4), each of which is formed by a cylindrical surface portion with a free front part (40). The front parts (40) of said sectors (4) define a substantially circular shape with a diameter varying between a maximum value (4a) and a minimum value (4c). Each of said sectors (4) has a part pivoted on a respective hinge (42; 106) and is connected to moving means apt to determine its rotation around said hinge (42; 106) such that the sectors (4) define a cylindrical shape or a conical shape depending on their rotation around said hinge (42; 106).

Abstract: Method for applying glue on tubular cores for the production of logs of paper material, comprising the step of supplying in sequence more tubular cores (1) along a predetermined advancing direction (A) and the step of applying on each of said cores (1) a pre-determined amount of glue on a first point (P6) and on a second point (P7). The method further comprises a step of orienting the glue (G6) applied on the first point (P6) towards the second point (P7) and along said advancing direction (A), and orienting the glue (G7) applied on the second point (P7) towards the first point (P6) and along a direction opposite relative to said advancing direction (A).

Abstract: A method for storing cardboard tubes (2) in a storing unit according to the present invention comprising the following steps: providing a storage unit with an input section for the tubes (2), a storage section (AC) comprising a plurality of storing planes (13), an output section for the tubes (2), transfer means (3) for transferring the tubes (2) from the input section to the storage section, and discharge means for conveying the tubes (2) from the storing section to the output section; providing a plurality of cardboard tubes (2) in the input section (E) of said storage unit; transferring the tubes (2) from the input section of the storage unit to the storage section; storing a plurality of tubes (2) in said storage section (AC); transferring the tubes (2) from said storage section (AC) to said output section.

Abstract: Device for controlling a flow of cardboard tubular cores (1) adapted to produce logs of paper material and intended to be stored in a collection point (2) placed downstream of the same device, comprising more conveyors (5; 7) each of which is adapted for carrying the said tubular cores (1) up to the entry point (6D) of a respective guide channel (6) having an entry point (6D) and an exit point (6F), interception means (8) adapted for intercepting the tubular cores (1), said interception means being arranged and acting on each of said channels (6) to adjust the flow of the tubular cores through the respective exit points (6F), and programmable means (UE) adapted for activating and deactivating said interception means (8). The interception means (8) are adapted to selectively form two nips (N1, N2) inside the guide channel (6), the nips (N1, N2) being selectively formed at a predetermined distance from each other.

Abstract: Machine for cutting cardboard tubes, comprising a cutting unit (CU) with a carriage (7) on which is mounted a blade (6) and a support element (4, 5, 8) for supporting a cardboard tube (1) intended to be transversely cut by the blade (6), wherein the said support element (4, 5, 8) allows the tube (1) to slide along a predetermined direction (A) parallel to its axis longitudinal (x) and to rotate about the same axis, and wherein said carriage (7) is adapted to move bidirectionally the blade (6) parallel to the longitudinal axis (x) of the tube (1). The support element (4, 5, 8) has, where said cutting unit (CU) is arranged, a part (5) movable from and towards the blade (6) to maintain the tube (1) spaced from the latter and, respectively, for approaching the tube to the same blade (6) during a cutting phase.

Abstract: Equipment for the production of cardboard tubes, comprising a tube-forming machine (1) provided with means for forming cardboard tubes with strips of cardboard (3) helically wound on a forming spindle (10), comprising a feeding unit (2) for feeding said cardboard strips, and comprising guide means (4) for guiding the cardboard strips (3) along a predetermined path (30, 31, 32) between the feeding unit (2) and the tube-forming machine (1), wherein in a final section (32) of said path the strips of cardboard (3) enter into the tube-forming machine (1). The guide means (4) are arranged and acting, along the said path, such that in said final section (32) of said path the cardboard strips (3) enter from the above or from the bottom into the tube-forming machine (1), so that said final section (32) is a descending or an ascending section of said path.

Abstract: Apparatus for causing paper webs to tear off within rewinding machines, the web (2) being provided, at regular intervals, with transverse perforation which subdivide the web into sheets joined to each other but able to be separated in correspondence of said perforation lines, the apparatus comprising a device to cause the tearing of the web (2) upon the passage of a perforation line (p) which separates the last sheet of a log (RO) in the course of formation from the first sheet of the next log to be formed, characterized in that the tearing device is a pneumatic type device (SP) able to direct a jet of compressed air toward the line (p).

Abstract: Device for controlling the discharge of Logs outgoing from a rewinding machine, comprising a body (6) placed downstream of a surface (5) along which the logs (3) move in a output direction (F), wherein said body (6) rotates with a predetermined angular speed about an axis (a) parallel to the logs (3) and perpendicular to said output direction (F) followed by the Logs (3). The body (6) has at least one pocket (P) adapted to receive and temporarily housing a log (3) that enters in the same pocket (P) while moving along the said output direction (F). The body (6) rotates about said axis (a) in a direction (G) opposite to the output direction.

Abstract: Device for controlling the separation of the sheets of paper webs rolled in the form of logs, comprising a guide roller (RA) cooperating with further means (R4, R5) for rolling a paper web (2) so as to form a paper log and cooperating with means for providing pre-incision lines on the paper web (2) so as to divide it in multiple separable sheets. The device comprises pneumatic separation means (SP) adapted to direct a fluid jet (J) toward a pre-incision line (p) which separates the last sheet (LS) of a log (RO) in the course of formation from the first sheet (FS) of a subsequent log to be formed. The pneumatic separation means (SP) are inside the guide roller (RA) and the latter has an outer surface (72) with a plurality of through holes (73) allowing the fluid jet (J) produced by the pneumatic separation means (SP) to be directed towards the pre-incision lines (p).

Abstract: Apparatus for causing paper webs to tear off within rewinding machines, the web (2) being provided, at regular intervals, with transverse perforation which subdivide the web into sheets joined to each other but able to be separated in correspondence of said perforation lines, the apparatus comprising a device to cause the tearing of the web (2) upon the passage of a perforation line (p) which separates the last sheet of a log (RO) in the course of formation from the first sheet of the next log to be formed, characterized in that the tearing device is a pneumatic type device (SP) able to direct a jet of compressed air toward the line (p).

Abstract: Transmission device for embossing rollers, comprising a pin (31) destined to be axially inserted into one end (100) of an embossing roller (1), the said pin (31) being motorized to drag the embossing roller (1) in rotation when it is inserted in said end (100). The said pin (31) is supported by elastic means (M1, M2,G) which allow its automatic alignment with a longitudinal axis (r) of the said end (100) of the embossing roller (1) during insertion of the pin (31) into the same end (100).

Abstract: Apparatus for trimming paper rolls or logs (2) characterized in that it comprises: a section for the entry of the logs (2) to be trimmed; a section for the exit of the trimmed logs (2?); a station with cutting means (6) for trimming the logs (2); means (3) for moving the logs (2, 2?) between the entry section, the cutting station and the exit section; means (4), associated with the log-moving means (3), for retaining the logs when subjected to movement.

Abstract: Apparatus for trimming paper rolls or logs (2) including: a section for the entry of the logs (2) to be trimmed; a section for the exit of the trimmed logs (2?); a station with cutting device (6) for trimming the logs (2); a device (3) for moving the logs (2, 2?) between the entry section, the cutting station and the exit section; a device (4), associated with the log-moving device (3), for retaining the logs when subjected to movement.

Abstract: Apparatus for moving logs (2) within cutting-off machines. The apparatus includes a platform (1) with one or more longitudinal channels (10) inside which the logs to be cut are disposed, and a pusher device (3) acting in correspondence of the platform (1) and intended for acting on the back of the logs (2) to push them, along respective guide channels (10), toward a cutting device (4) disposed downstream. The apparatus includes a clamping device (5) disposed intermediate between the pusher device (3) and the cutting device (4) and intended for engaging the logs (2) which are pushed along the channels (10) of platform (1) by the pusher device (3) and driving them along up to the cutting device (4).

Abstract: Roller for treating a paper web, particularly apt to be used within an embossing or a calendering unit, including a central fixed shaft (10) linked to a fixed frame (11) on both its ends, on the shaft (10) more low-friction elements (12) being mounted, on the low-friction elements a tubular skirt (2) being mounted coaxially with the shaft (10), the skirt (2) being free to rotate about the longitudinal axis (x-x) of the shaft (10) and being subject to vibrations during the rotation. The roller including structure for dampening vibrations, the dampening structure being provided and acting between the skirt (2) and the shaft (10).