Wrapping head for wrapping loads, particularly palletized loads, and method of operation thereof

Abstract

A wrapping head for wrapping loads, particularly palletized loads, including a framework, connectable to the operating end of a handler, and supporting a reel of film made of extensible material, and diverting means, for transferring the film, unwound from the reel, towards the load. The head also includes means for cutting the film, along its feed direction, so as to obtain a first portion of film and a second portion of film that are distinct and separate from each other, and deflection means for the first portion of film, suitable to superimpose the first portion on the second portion, thus attaining, at the outlet of said wrapping head, a double-layer material band.

Description

TECHNICAL FIELD OF THE INVENTION[0001]The present invention regards a head for wrapping loads, more particularly palletized loads, and the respective wrapping method.STATE OF THE PRIOR ART[0002]As is known, the palletized loads consist of one or more goods arranged on a pallet for the purpose of facilitating the movement and the transport thereof.[0003]In order to prevent falls or overturning of goods, during the transport of a palletized load it is provided to laterally enclosed or wrap the load itself with a layer of extensible material, for example in the form of a plastic material film.[0004]The wrapping of a palletized load is generally carried out by means of automatic or semiautomatic wrapping stations, comprising means for moving a wrapping head, which carries one or more reels of such extensible material that can be unrolled and wound around the load.[0005]There are different types of wrapping stations.[0006]In some types of stations, the palletized load is maintained stati...

AI Technical Summary

Benefits of technology

The present invention provides a wrapping head for wrapping loads that overcomes previous drawbacks. The head is capable of stabilizing palletized loads with a more limited consumption of plastic material film, and is structurally simple and inexpensive. The head is also easy to operate and provides a solid and thick wrapping, even without using a greater quantity of material. The user can decide to carry out a normal single-layer wrapping cycle or, if necessary, to pass in a very simple and quick manner to a double-layer wrapping mode for a stronger and more rigid wrapping in specific zones of the load.

Problems solved by technology

The strong vertical stresses sustained by the load during the transport can temporarily cancel the weight force of the goods of the palletized load, with the consequent reduction of the friction force between one layer of goods and the next, and possible accidental movements between the layers.

Such practice of firmly and repeatedly wrapping the base of the palletized load with the plastic material film, in addition to not resolving the aforesaid problem of the “hourglass” effect of the palletized load, involves—as can be understood—a considerable increase of the consumption of employed film, as well as a corresponding increase of the consumer costs of the palletized goods.

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