The invention relates to a wrapping machine for wrapping a load with a film including at least one operating unit for performing operations on the load or on the film and a conveying device for moving the load along an advancing direction through the machine. The machine includes a movement system that is adapted for moving the operating unit and comprises a shuttle assembly movable along a path and arranged for supporting and moving the operating unit. The shuttle assembly and the conveying device are drivable in a coordinated manner in order to enable the operating unit to perform operations on the load wrapped with the fi8lm even while the load is moved along the advancing direction and out of the machine.
B65B 11/02 - Wrapping articles or quantities of material, without changing their position during the wrapping operation, e.g. in moulds with hinged folders
B65B 59/04 - Machines constructed with readily-detachable units or assemblies, e.g. to facilitate maintenance
B65B 13/18 - Details of, or auxiliary devices used in, bundling machines
B65B 11/04 - Wrapping articles or quantities of material, without changing their position during the wrapping operation, e.g. in moulds with hinged folders the articles being rotated
B65B 11/02 - Wrapping articles or quantities of material, without changing their position during the wrapping operation, e.g. in moulds with hinged folders
B65B 11/04 - Wrapping articles or quantities of material, without changing their position during the wrapping operation, e.g. in moulds with hinged folders the articles being rotated
B65B 11/00 - Wrapping, e.g. partially or wholly enclosing, articles or quantities of material, in strips, sheets or blanks, of flexible material
A machine for wrapping a load with a film made of synthetic plastics includes a first frame suitable for supporting second frame that rotatably supports around, and slidably parallel to, a wrapping axis at least one wrapping unit including a reel of the film and a roller assembly arranged for unwinding and prestretching the film. The second frame is slidably mounted on the first frame and is movable along an advancing direction that is transverse, and in particular orthogonal, to the wrapping axis. A conveyor is provided for moving the load along the advancing direction. The conveyor and the second frame are movable in a mutually coordinated manner to wrap the load with the film also while the load is moved along the advancing direction.
B65B 11/00 - Wrapping, e.g. partially or wholly enclosing, articles or quantities of material, in strips, sheets or blanks, of flexible material
B65B 11/58 - Applying two or more wrappers, e.g. in succession
B65B 35/24 - Feeding, e.g. conveying, single articles by endless belts or chains
4.
APPARATUS WITH HIGH LEVEL OF AUTONOMY FOR THE CYCLICAL FEEDING OF A LARGE FLOW OF TRAYS, BOXES OR OTHER DIE-CUT CORRUGATED CARDBOARD SHEETS FOR PACKAGING, TO A CONVEYOR LINE THAT FEEDS IN PHASE THESE DIE-CUT CORRUGATED CARDBOARD SHEETS TO A HIGH PRODUCTION CONTINUOUS PACKAGING MACHINE.
Apparatus with high level of autonomy for the cyclical feeding of a large flow of trays, boxes or other die-cut corrugated cardboard sheets (F) for packaging, to a conveyor line (1) that feeds in phase these die-cut corrugated cardboard sheets to a high production continuous packaging machine, characterized in that it comprises two or more stores (2, 2', 2") containing the die-cut corrugated cardboard sheets (F) positioned laterally with respect to or above an initial portion of the conveyor (1) or auxiliary conveyor means associated therewith, and in that it comprises cyclical first transfer means (5, 505) for extracting respective die-cut corrugated cardboard sheets (F) from each of the stores (2, 2', 2") and for feeding them in head to tail arrangement and in phase on to the conveyor which is thus cyclically resupplied with two or more die-cut corrugated cardboard sheets at a time, in order to provide ample opportunity for adaptation to the production requirements of the continuous packaging machine which it serves, while also decreasing the operating frequency of the cyclical first transfer means (5, 505) and consequently increasing the load capacity and overall autonomy of operation of the stores (2, 2', 2").
B65B 43/18 - Feeding individual bags or carton blanks from piles or magazines by grippers by suction-operated grippers
B31B 5/76 - Opening and distending flattened articles
B31B 1/76 - Opening and distending flattened articles
B31B 5/00 - Machinery characterised by making boxes or cartons by folding single-piece sheets which can be set-up from a collapsed condition, including setting-up and recollapsing to break creases
An apparatus comprises a reel-holding unit for a wrapping machine for wrapping a product with a film unwound by a plurality of rollers from the reel and a reel-changing unit for replacing a finished reel with a new reel, the reel-holding unit and the reel-changing unit being mutually positionable in a reel-change configuration in such a manner that the new reel can be positioned instead of the finished reel, the reel-changing unit being provided with elements that define a curvilinear path for an initial portion of the film of the new reel, the elements being positionable in the reel-change configuration such that when a roller of the plurality of rollers is positioned at a curve, at least one of the elements is completely interposed between the film and the roller.
A wrapping machine for wrapping a product with a plastic film including a supporting frame with which a ring arrangement is associated that rotates around a wrapping axis of the film and around the product. The supporting frame further supports a carriage arranged for supporting a reel of the film and for supporting a first roller and a second roller for unwinding and stretching the film. A first motor and a second motor are mounted on the supporting frame and coupled, respectively, with the first roller and the second roller.
B65B 11/02 - Wrapping articles or quantities of material, without changing their position during the wrapping operation, e.g. in moulds with hinged folders
7.
Unit for positioning a sheet of film to cover the tops of product groups
A unit for positioning a sheet (1) of film (2) to cover the tops of product groups (3) comprises: a second roll (12) of film (2); a first carriage (13) that is slidably mounted on guide rails (14) running along an upper horizontal plane and is driven in both directions along the wrapping area (10) by motorized movement means (15); the first carriage (13) is equipped with a first gripper unit (16) designed to grip the free end of the film (2) and to unwind the film (2) for a predetermined length; film (2) cutting means (17) located in the vicinity of the second roll (12) and designed to separate the length of film thus unwound from the rest of the film (2); a second carriage (18) slidably mounted on the guide rails (14) in the vicinity of the cutting means (17); a second gripper unit (19) mounted on the second carriage (18), acting on the film (2) in such a way as to hold the sheet (1) at a second retention point when the cutting means (17) are activated; means (20) for coupling the second carriage (18) to the motorized movement means (15) in such a way that, when engaged, the two carriages (13, 18) can move together as one in order to position the sheet (1) centrally on the top surface of the product group (3).
patents
