DESCRIZIONE
Filleting machine of the kind that is structured with a flat cutting table composed of two or more belt conveyors (4, 5, 6) placed with their conveyor tracks (3) at the same horizontal level. Between two belt conveyors (5, 6) is inserted a cutting device (9), which with knives (11), designed to make cuts perpendicular on the belt conveyor s feed direction (P), cuts through the fish fillets (F), that are placed on the cutting table (3), and which by means of the belt conveyors are fed through the cutting zone of the machine. The transverse cuts are made in a pre-set diagonal angle in relation to horizontal, allowing the fish fillet to be cut into a number of relatively thin slices. The transverse cuts are made successively with the feed of the fillet through the machine so that the relation between the feed rate of the belt conveyor and the cut frequency of the cutting device will determine the thickness of the fillet slices produced. The novelty of the filleting machine is that the cutting device (9) is structured with an above the conveyor track (3) placed angle adjustable supporting frame (7), which practically bridge the conveyor track, and that on each side of this supporting frame (7) is mounted a linear guide and drive unit (10), which serves to control the knives (11) in their motion down towards and away from a cutting dolly (12), which is inserted in the conveyor track (3) between the two belt conveyors (5, 6). The double set of guide and drive units (10) ensures a stable and accurate guidance of the knives (11) and thus an accurate cutting motion down towards and away from the cutting dolly (12). The accurate cutting motion is essential to achieve the best possible cut quality with clean cuts and uniform slice thickness. As drive unit (10) on each side of the supporting frame (7) it is, according to the invention, advantageous to use an electromagnetic linear motor (23, 24) of the kind that is built with a linear guide (20, 21, 22) into a compact machine unit. The drive units on the two sides of the supporting frame are synchronized. The solution allows for operation at an extremely high cut frequency and thus with a considerably higher production capacity as in known filleting machines.