Pallet-Less
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Paletizadores.angl filmar 3-05 4/1/06 23:33 Página 26 Pallet Palletisation line 24

Paletizadores.angl filmar 3-05 4/1/06 23:33 Página 25 et-less T he pallet-less line forms the pallet wrapped in shrinkable plastic, with a lower bag distribution that allows the forks lift to be inserted and to carry out handling operations as if it were a standard pallet. As wooden pallets are not employed, the associated logistics costs are avoided. In addition, it is wrapped in shrink plastic, so a much higher degree of protection is achieved than when other procedures are used. All this allows the pallets to be stored in outside weather conditions, whilst product preservation is...

Paletizadores.angl filmar 3-05 4/1/06 23:33 Página 22 Pallet-less Characteristics T he pallet-less forming procedure is similar to the standard palletiser to which the necessary accessories are added. The various layers are placed on a wide belt with the final one shaped to produce the steps that will later be required to handle the packet with a forklift. This last layer always has fewer bags than the others so as to leave the necessary space for the steps. 26

Different layer designs can be made from three to eight bags per layer. Special products and layer designs require customised study, as well as the appropriate tests in order to guarantee perfect system operation. A pallet-less line basically comprises the palletiser, shrink film wrapper, shrink frame, pallet turner and final accumulation. According to the required production rate and the product characteristics, transfer transporters, flat sheet dispensers, wooden pallet exit conveyors, etc. can be added.

Paletizadores.angl filmar 3-05 4/1/06 23:29 Página 17 Operation Pallet-less 10 8 1 2 3 4 5 6 7 8 9 10 11 12 13 14 - Palletiser Full pallet Wooden pallets stock area Transfer Plastic sheet placer Shrink wrapping machine Shrink film roll Shrink frame machine Shrink frame machine conveyor Edge adjuster Pallets overturner 2nd shirnk frame machine Top cover Pallet-less 11 12 14 13 29

Paletizadores.angl filmar 3-05 5/1/06 00:21 Página 13 Layout dimensions A Pallet-less diagram of a pallet-less line. Configuration and characteristics may change depending on the available space and the required production rate. In the example shown, there is a direct wooden pallet exit with two pallets in parallel and a grouping device for the forklift truck with long forks capable of loading two pallets at the same time. This is a common solution, which facilitates the loading of trucks by opening just one side. 31

Paletizadores.angl filmar 3-05 4/1/06 23:29 Página 10 Palletising Safety S afety is a basic concept in the design and construction of Metral® machines. The EU Directive establishes the essential requirements for hygiene and safety related to the safe design and construction of machinery, as well as their correct installation and maintenance. Metral® lines comply with all current regulations by complying with all basic technical and specific additional requirements for each machine. The CE declaration of conformity is included at delivery, together with operating, maintenance and spare-parts...

Paletizadores.angl filmar 3-05 5/1/06 01:04 Página 9 Safety Palletising SEGURET4.AI SEGURET2.AI REARME.AI Once the pallet is entered or removed a manual machine reset is performed. Activation of the front barrier and machine operation. 33

Paletizadores.angl filmar 3-05 5/1/06 00:21 Página 5 Description ROBOT Metral® has various types of robots for low-production applications which palletise bag by bag. It is possible to incorporate various types of gripper or suction pads into the machines. 3145 The model shown in the diagram has a hatch for forming the layer, as well as an access belt conveyor, which is operated at the same speed as the pallet formation. 500 For smaller spaces, a vertical bag lift can be incorporated which is installed either inside the machine or on one side. Conventional robot versions are also available...