Abstract: Compression system comprising two pressers (2, 3) mounted on a load-bearing frame (1), wherein—a presser is pushed towards the other presser by means of respective thrust means (5) generating a given thrust (L5),—an adjustable stop (60) fastened to the load-bearing frame (1) is opposed to the thrust means and is placed between the load-bearing frame and the thrust means to absorb a part (L6) of the thrust (L5) and unload it onto the frame, such that a second part (L23) of the thrust (L5) is transmitted to the two pressers,—the adjustable stop is connected to respective position adjustment means (6),—the thrust means comprise at least one first actuator cylinder supplied with a fluid at a pre-established pressure, the at least one first actuator cylinder having a known and predefined bore; and—the means for regulating the adjustable stop comprise at least one further actuator cylinder.

Abstract: An embossing unit including an engraved steel roller and a rubber counter-roller, where the rubber counter-roller exerts a thrust of a predetermined value on the engraved roller by a corresponding actuator, where the engraved roller a marrying-roll is also associated which exerts on the same engraved roller a radial thrust of a predetermined value by a respective actuator. The thrust exerted by the counter-roller on the engraved roller is contained in a plane passing through the axis of rotation of the respective engraved roller and is inclined by a predetermined angle with respect to a plane passing through the same axis of rotation and also passing through the axis of the marrying-roll, so as to produce a counter-thrust opposite to the thrust. The marrying-roll is made of steel.

Abstract: System for handling cardboard reels to feed machines that produce cardboard tubes, comprising a station (P) for picking up the reels configured to receive a stack (2) of overlapping cardboard reels (1), a station (U) for unwinding of the reels comprising at least one unwinding unit (UU), and handling means (D) for moving the reels (1) along a predetermined path between the reel pick-up station (P) and the unwinding station (U). The reel handling means are provided with an additional reversible device for hooking the reels to the handling means themselves.

Abstract: System for handling cardboard reels to feed machines that produce cardboard tubes, comprising a station (P) for picking up the superimposed cardboard reels (1), a reel unwinding station (1) comprising at least one unwinding unit (UU) capable of supporting the reels to be unwound, in the unwinding station (U) being also provided splicing means configured to splice a tail portion (TY) of a reel (1 Y) being exhausted with a new reel (1W), and handling means (D) for moving the reels (1) along a predetermined path between the reel pick-up station (P) and the unwinding station (U). Said at least one unwinding unit (UU) comprises several supports (403; 404) mounted on a vertical axis carousel structure (G).

Abstract: System for handling cardboard reels to feed machines that produce cardboard tubes, comprising a station (F) for picking up the reels configured to receive a stack (2) of overlapping cardboard reels (1), a station (U) for unwinding of the reels, and handling means (D) for moving the reels (1) along a predetermined path. The means (D) for moving the reels comprise pneumatic means intended to pressurize a space (S) inside the stack of reels, in which said space includes the interface between an uppermost reel of the stack and the underlying reel, and gripping means configured and controlled to perform grip and release of the highest reel in the stack respectively.

Abstract: Embossing unit comprising a fixed structure (1) and a mobile structure (2) configured to be moved to and from the fixed structure (1), a first embossing assembly (LA), a second embossing assembly (UA) and a gluing assembly (GA), wherein the first embossing assembly (LA) comprises a first engraved steel roller (3) and a respective rubber counter-roller (4), wherein the second embossing assembly (UA) comprises a second steel engraved roller (5) and a respective rubber counter-roller (6), and wherein the gluing assembly (GA) is mounted on the mobile structure (2). The first embossing assembly (LA) and the engraved roller (5) of the second embossing assembly (UA) are mounted on the fixed structure (1) while the rubber counter-roller (6) of the second embossing assembly (UA) is mounted on the mobile structure above the gluing unit (GA).

Abstract: Embossing unit comprising a fixed structure (1) and a mobile structure (2) configured to be moved to and from the fixed structure (1), a first embossing assembly (LA), a second embossing assembly (UA) and a gluing assembly (GA), wherein the first embossing assembly (LA) comprises a first engraved steel roller (3) and a respective rubber counter-roller (4), wherein the second embossing assembly (UA) comprises a second steel engraved roller (5) and a respective rubber counter-roller (6), and wherein the gluing assembly (GA) is mounted on the mobile structure (2). The first embossing assembly (LA) and the engraved roller (5) of the second embossing assembly (UA) are mounted on the fixed structure (1) while the rubber counter-roller (6) of the second embossing assembly (UA) is mounted on the mobile structure above the gluing unit (GA).

Abstract: A rewinding machine for producing paper logs by winding a paper web, comprising: elements for feeding a paper web along a predetermined path at a predetermined feeding speed; web pre-cutting elements; web winding elements; web sizing elements, with a pad adapted to cyclically apply glue by contact on the web, the pad being mounted on a pad-holder device connected with a corresponding actuator. The web sizing elements are arranged upstream of a web winding station. The pad-holder device is controlled such that, when the pad contacts the web, the pad is moved with a speed lower than the speed of the web along the respective feeding path so as to cause a prolonged contact of the pad with the web while the pad and the web move.

Abstract: Rewinding machine for producing paper logs by winding a paper web, include: an element for feeding a paper web along a predetermined path at a predetermined feeding speed; web pre-cutting elements; web winding elements; web sizing elements, with a pad adapted to cyclically apply glue by contact on the web, the pad being mounted on a pad-holder device connected with a corresponding actuator. The pad is mounted on the pad-holder device by an elastic support which deforms elastically, such that the pad moves elastically towards the pad-holder, when it is subjected to a pressure and moves automatically in the opposite direction returning to its previous position when the pad is no longer subjected to a pressure.

Abstract: Guide system for the handling paper material webs comprising: gripping means (1) configured to engage a web (W) of paper material to control its movement according to a predetermined direction of advancement (WF); structure (2) for supporting said gripping means (1); hooking means (4) adapted to temporarily hook a lateral edge (SW) of the web (W), said hooking means being arranged downstream of the gripping means (1) with respect to the aforementioned direction of advancement (WF); wherein said hooking means (4) comprise a flexible member (40) equipped with tips (46) adapted for engaging the lateral edge (SW) of the web (W), the flexible member (40) being mounted on a support (41) movable between a hooking position and an inoperative position.

Abstract: Guide system for handling paper material webs comprising: gripping means (1) configured to engage a web (W) of paper material to control its movement according to a predetermined advancement direction (WF); a structure (2) for supporting said gripping means (1); hooking means (4) adapted to temporarily hook a lateral edge (SW) of the web (W), said hooking means being arranged downstream of the gripping means (1) with respect to the aforementioned advancement direction (WF) and configured for temporary hooking the lateral edge (SW) of the web (W) by temporary overlapping a path (PW) followed by the same lateral edge.

Abstract: Method for unwinding web materials from two parent reels (1, 2), wherein a first parent reel (1) in a depletion phase is replaced by a second parent reel (2), wherein during said replacement a first and a second web material (N1, N2) are unwound from both parent reels, wherein before the completion of said replacement the first web material (N1) is joined to the second web material (N2) and then it is cut, wherein the joining of said web materials (N1, N2) is preceded by the insertion of the second web material in an area where the two web materials are joined, and during the step of inserting the second web material in said joining area the second web material is guided on a guide surface (41, 44) which guides it towards the joining area. In said insertion step, the second web material adheres pneumatically to guide surface.

Abstract: System for handling cardboard reels to feed machines that produce cardboard tubes, comprising a station (P) for picking up the reels configured to receive a stack (2) of overlapping cardboard reels (1), a station (U) for unwinding of the reels comprising at least one unwinding unit (UU), and handling means (D) for moving the reels (1) along a predetermined path between the reel pick-up station (P) and the unwinding station (U). The reel handling means are provided with an additional reversible device for hooking the reels to the handling means themselves.

Abstract: System for handling cardboard reels to feed machines that produce cardboard tubes, comprising a station (F) for picking up the reels configured to receive a stack (2) of overlapping cardboard reels (1), a station (U) for unwinding of the reels, and handling means (D) for moving the reels (1) along a predetermined path. The means (D) for moving the reels comprise pneumatic means intended to pressurize a space (S) inside the stack of reels, in which said space includes the interface between an uppermost reel of the stack and the underlying reel, and gripping means configured and controlled to perform grip and release of the highest reel in the stack respectively.

Abstract: System for handling cardboard reels to feed machines that produce cardboard tubes, comprising a station (P) for picking up the superimposed cardboard reels (1), a reel unwinding station (1) comprising at least one unwinding unit (UU) capable of supporting the reels to be unwound, in the unwinding station (U) being also provided splicing means configured to splice a tail portion (TY) of a reel (1 Y) being exhausted with a new reel (1W), and handling means (D) for moving the reels (1) along a predetermined path between the reel pick-up station (P) and the unwinding station (U). Said at least one unwinding unit (UU) comprises several supports (403; 404) mounted on a vertical axis carousel structure (G).

Abstract: Device for handling cardboard reels, comprising a main body (8) with a rod (45) on which are arranged: a first unit with two axially opposed plates (91, 92), provided with respective radially expandable parts (913, 923), and spaced apart by a predetermined value along an axial direction (A9) of said rod (45) so as to forming a pressurizable space (S) between said plates, said space (S) being delimited at the top and bottom by opposite surfaces (912, 922) of said plates (91, 92); means for controlling the radial expansion of said parts (913, 923); pressurization means for pressurizing said space (S).

Abstract: A rewinding machine for producing paper logs by winding a paper web, comprising: elements for feeding a paper web along a predetermined path at a predetermined feeding speed; web pre-cutting elements; web winding elements; web sizing elements, with a pad adapted to cyclically apply glue by contact on the web, the pad being mounted on a pad-holder device connected with a corresponding actuator. The web sizing elements are arranged upstream of a web winding station. The pad-holder device is controlled such that, when the pad contacts the web, the pad is moved with a speed lower than the speed of the web along the respective feeding path so as to cause a prolonged contact of the pad with the web while the pad and the web move.

Abstract: Rewinding machine for producing paper logs by winding a paper web, include: an element for feeding a paper web along a predetermined path at a predetermined feeding speed; web pre-cutting elements; web winding elements; web sizing elements, with a pad adapted to cyclically apply glue by contact on the web, the pad being mounted on a pad-holder device connected with a corresponding actuator. The pad is mounted on the pad-holder device by an elastic support which deforms elastically, such that the pad moves elastically towards the pad-holder, when it is subjected to a pressure and moves automatically in the opposite direction returning to its previous position when the pad is no longer subjected to a pressure.

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: Paper converting plant including a rewinder adapted to produce paper logs and having an inlet for feeding a paper web, a winding station where the logs are formed and an exit station for unloading the finished logs. The rewinder has walls delimiting a chamber inside which the logs are formed, and an air suction channel at a lower part of chamber. The suction channel exerts a suction causing the formation of an air flow directed from the top to the bottom inside the chamber. The chamber includes two semi-chambers communicating with the air suction channel such that a vertical air flow directed downwards is generated in each of them, the chamber being provided with a manner for regulating the vertical air flows providing vertically oriented identical air flow rates in the semi-chambers.