The handling of biscuits after cooling is a very delicate stage in the production process, and experience and know-how are fundamental for ensuring high levels of efficiency for the entire line. The biscuit shells must be handled so that they are presented in the most suitable way at the next packaging stage: the products are handled differently according to their type.
Strips of crackers, for example, are aligned and then, by going through a set of motorized top rollers, they are gently separated and single portions are created.
Hard and soft dough biscuits, on the other hand, are usually diverted both longitudinally and transversally by means of a channeling board to be forwarded to the next stacking stage. There are two stacking systems: the penny stacker and the star wheel. The latter is commonly used for dedicated lines where few products, which are very similar in size and thickness, need to be handled. The penny stacker system makes it possible to handle a wider range of products efficiently. Stacking is carried out by a set of conveyors which, since one runs at lower speeds than the other, gently overlap and pile up the shells. In the star-wheel system, a rotating star-shaped shaft takes the incoming biscuit shells and turns them on edge on a separate conveyor.
The stacked products on the packing table can then be loaded manually or by automatic loaders into the magazine of the next wrapping machine.
Channelling board followed by penny stacker conveyors.
Stacked cracker are automatically diverted before feeding the wrapping machines.
Star wheel type biscuit stacking system.
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