摘要:
A wrapping machine and respective wrapping method are described, wherein two stretchable film dispensing units (3a,3b) facing each other are provided, and wherein the stretchable film coming from the first dispensing unit is joined to the film coming from the second dispensing unit at least during the wrapping step. A preferred joining device (4) is further described for separating the film from the wrapped load and restoring the film continuity between the two dispensing units.
摘要:
A hooding apparatus is disclosed for the wrapping with plastic film hoods, comprising a support frame (1) whereon a forming system for a hood of plastic material is arranged which comprises gripping and advancing means divided into a first vertical dragging carriage (13), apt to drag a tubular film (P) along a substantially vertical path, and a second horizontal dragging carriage (20), apt to drag said film (P) along a substantially horizontal path, said carriages comprising first clamping members (30') and second clamping members (31'), respectively, distributed on a respective lifting bar (30) and dragging bar (31) arranged in the direction of the width of said plastic film (P), and being apt to mutually cooperate in an exchange station.
摘要:
A dispenser of stretchable plastic material film and a wrapping machines equipped with such a dispenser are described. The dispenser comprises a bobbin (2) of plastic film, a pre-stretching unit (P1,P2) driven by driving means and a movable controlling roller (B) apt to control said driving means on the basis of the tension applied thereon by the plastic material film, said movable controlling roller being mechanically connected to a friction slipping clutch (10-12) apt to transfer a torque from said driving means to the pre-stretching unit, the torque transferred by said slipping clutch being proportional to the pressure applied thereon through said movable controlling roller.
摘要:
A wrapping machine for pallets of the type comprising a fixed frame on which there is mounted a annular structure surrounding a product (C) to be wrapped and translatable with respect thereto, wherein a film of plastic material is distributed around said product by the annular structure, wherein said annular structure has a configuration in the form of an epicycloidal gearing in which the spider, the planetary gears and the driving gear consist, respectively, of an annular support, a set of rollers (3) rotatably mounted on parallel axes mounted on said annular support along a circular line, and a driving element (6) operated by motor means (7) and acting on said rollers, and wherein said film is supplied from the outside of said annular structure and, crossing said annular structure between two of its adjacent rollers, is distributed internally by the rotation of said annular structure, so as to be applied in turns on said product.
摘要:
A dispenser of stretchable plastic material film and a wrapping machines equipped with such a dispenser are described. The dispenser comprises a bobbin (2) of plastic film, a pre-stretching unit (P1,P2) driven by driving means and a movable controlling roller (B) apt to control said driving means on the basis of the tension applied thereon by the plastic material film, said movable controlling roller being mechanically connected to a friction slipping clutch (10-12) apt to transfer a torque from said driving means to the pre-stretching unit, the torque transferred by said slipping clutch being proportional to the pressure applied thereon through said movable controlling roller.
摘要:
A wrapping machine for pallets of the type comprising a fixed frame on which there is mounted a annular structure surrounding a product (C) to be wrapped and translatable with respect thereto, wherein a film of plastic material is distributed around said product by the annular structure, wherein said annular structure has a configuration in the form of an epicycloidal gearing in which the spider, the planetary gears and the driving gear consist, respectively, of an annular support, a set of rollers (3) rotatably mounted on parallel axes mounted on said annular support along a circular line, and a driving element (6) operated by motor means (7) and acting on said rollers, and wherein said film is supplied from the outside of said annular structure and, crossing said annular structure between two of its adjacent rollers, is distributed internally by the rotation of said annular structure, so as to be applied in turns on said product.