Abstract:
A Process for feeding products of variable height and length into a continuous packaging apparatus comprising a conveyor (11) with thrusters (12) that receives publishing products or similar (13, 13′, 13″, etc.), such as newspapers, magazines, books, envelopes, giveaways or other similar products, from a certain number of feeders (14, 14′, 14″, etc.), a conveyor belt (21) where the packaging in a plastic or paper film (26) takes place, fed continuously above the conveyor belt (21) that foresees, in a downstream area, longitudinal and transversal sealing devices (23) that make finished packages (24, 24′, etc.) of various sizes in height and length, said process comprising the steps of: varying the pitch on the conveyor belt (21) of the products or groups of products (13, 13′, 13″, etc.) fed by the conveyor (11) with thrusters (12) through continuous variation of the speed of the conveyor belt (21), and operatively adapting the speed of the sealing devices (23) to the sizes in height and length of the products or groups of products (13, 13′, 13″, etc.).
Abstract:
A device designed to open at least one page of a publication in order to introduce printed inserts, fitted in an insert feeding and/or packaging machine, which includes a feed table for publications associated with a product feeding conveyor, at least one sheet feeder being fitted alongside table to feed secondary products, which said device including a suction and lifting element that lifts a lateral portion of said at least one page of a main product, a deflector designed to deflect the lateral portion of said at least one lifted page being fitted downstream of said suction and lifting element, which has a reduced width and is fitted alongside in correspondence of the deflector, where said at least one sheet feeder is located.
Abstract:
A cutting device for trimming printed paper packages in a packaging machine. A cutting unit includes an upper part and a lower part which are movable relative to each other when a paper package passes between them. The package originates from paper material on a reel and is formed into a flat tube with glued edges with an unprinted neutral strip. One of the parts of the cutting unit carries two blades spaced apart by a distance equal to the width of the neutral strip and interacts with two counter blades on the other part. An elastic presser is positioned on one of the parts of the cutting unit to hold the package while the neutral strip is being cut by the blades. Spacers are provided so that the distance between the blades can be varied to match the width of the neutral strip.
Abstract:
A device for rapidly feeding sheet inserts to a pusher conveyor of a packaging machine having upstream of the device a feeder for feeding sheet inserts one after another in a direction essentially perpendicular to the pusher conveyor, including at least one rotary disc provided with at least one element for gripping the sheet insert, the at least one gripping element being operable selectively to lock the sheet insert onto the disc and drag the sheet insert from a position aligned with the insert feeder to an advanced position on the pusher conveyor by causing the sheet insert to undergo a rototranslational movement, the relative drive mechanism for the disc, for the sheet insert feeder and for the pusher conveyor being correlated in their movement.
Abstract:
An apparatus for stretching a continuous plastic film in a packaging machine, in which products fed one after the other are wrapped and sealed within the continuous film, which includes a first conveyor belt, a transverse welding apparatus, and a second conveyor belt, in which the transverse welding apparatus has a horizontally traversing carriage which supports a pair of superposed welding bars and a pressing belt facing the second conveyor belt. The conveyor belts are driven by a speed variator via a pair of transmissions, the first of which drives an end roller of the first conveyor belt and the second drives an end roller of the second conveyor belt by way of a linkage which varies the speed of the two conveyor belts, there being also provided upstream of the transverse welding apparatus, both above the first conveyor belt and operationally linked to the vertical movement of the upper welding bar, elements for clamping the film onto the products wrapped in it.
Abstract:
A packaging machine suitable for the continuous packaging of products, or of groups of products having a different shape and size in height, wherein, thanks to a particular combined movement of the transversal welding unit, both of sinking down towards the product, and of accompanying of the same product during the welding step, relatively to a car for its essentially horizontal shift, a quick and correct packaging of the products is obtained, even very different as regards the length in the direction of advancement of the packaging film, besides as regards the height, with the consumption of the packaging material being minimized to the strictly necessary amount, and the continuous packaging after each other being made possible of products or of product groups, having mutually different dimensions.
Abstract:
A packaging machine suitable for the continuous packaging of individual products, or of groups of overlapped products having a different size in height, such as signatures, newspapers, magazines, books, and the like, and provided with at least one running-belt pressing device which is vertically shiftable and is made integral with a car which suitable for reciprocating inside the packaging machine, and which supports a transversal-welding unit, which is provided with a combined motion of the welding element both downwards towards and products and of accompanying of the same products, so as to make it possible said products to be correctly packaged and to be perfectly stacked, with the packaging of even one individual product being made possible, independently on whether it even contains an extremely small number of pages.
Abstract:
In a conveyance system with crossing paths, such as used in the conveyance of piled-up articles such as newpapers and the like, the improvement consisting in providing two couples of belts arranged crosswise relative to one another and equipped with a lifting mechanism capable of lifting and depressing one couple of belts relative to the other. The lifting mechanism comprises an array of idle belt-tightening rollers and fixed rollers, a few rollers being mounted in such a way as to impart a U-bend to top belt lap, the U-bend area being mounted on a special swingable arm. Appropriate linkages ensure the desired synchronization of the movement of the upper laps of the belts, so that the articles on the belts can easily be passed from a lower-level belt to a higher-level belt, and viceversa. It is also possible to select which belts are to stand at a higher or lower level as necessity demands. Such a mechanism enables the piles of sheets to be switched from a conveying path to another without disturbing the correct superposition of the articles in the heaps.
Abstract:
In a packaging machine of the kind in which a tubular film is wrapped around the articles to be packaged as they are advanced over a conveyor belt and the film is heat-welded and severed, the improvement consisting in that the welding and the counter-welding rods are vertically reciprocated between respective inactive positions and an approached position whereat both rods cooperate to effect the welding and the film-severing. The height adjustment to allow for different heights of the articles to be packaged is thus greatly facilitated and the film pull reduced.
Abstract:
An assembly for realizing in continuous covering jackets of book elements of different dimensions starting from a film wrapped up in a coil. The assembly includes a mechanism for cutting the film unrolling from the coil for realizing pieces of the film; a first folding device of a first end of the pieces; a second folding device of a second end of the pieces; a control and command unit and a longitudinal welder suitable for both superiorly and inferiorly closing folded pockets and for regulating the height of the cover itself by trimming the parts in excess.