Improvement to the endless band conveyors has the purpose of the discrete to separate in batches of the objects arriving at intervals regular

摘要

1518674 Delivering sheets METAL BOX Ltd 25 Sept 1975 [2 Oct 1974] 42712/74 Heading B8R A conveyer system. e.g. for meat slices 5, Fig. 2, comprises a pair of belts 2 passing over pulleys 6, 8, 10, 12, 14, 16 and a pair of belts 4 passing over pulleys 16, 18, the pulleys 6, 16 being mounted on a common shaft 20 and the pulleys 6, 16, 8, 18 being carried on a carriage 26 reciprocable by an hydraulic cylinder. The pulleys 16, 18 are attached to the shafts 20, 24 through one-way clutches. The belts 2 are driven by a motor through the pulley 10, and the belts 4 are normally driven by the belts 2. Meat slices 5 initially fall on to the belts 4 at the point A to form a shingled stream. When a predetermined number of slices have fallen, a monitor actuates the cylinder to move the carriage in the direction B, accelerating to a speed greater than that of the belts 2. Until the carriage reaches the speed of the belts 2, the belts 4 continue to move at the speed of the belts 2 by slippage of the clutches on the shaft 20. When the carriage speed exceeds the belt speed, the clutches on the shaft 24 lock and the bolts 4 move at the speed of the carriage, creating a gap in the stream of slices 5 to form a batch, while the pulleys 6, 16 move to the right of the point A so that subsequent slices fall on to the belts 2. To delay the deposition of the first slice of a new batch, the assembly is pivoted by an hydraulic actuator 41 away from the slicing-machine 3. The carriage 26 is then retracted and the assembly raised, the belts 4 thereby being moved from under the slices to allow the batch to fall on to a weigher. In another form, Fig. 4, a shingled stream of bacon rashers is fed on to the left end of the belts 2, formed into shingled batches, and delivered on to an intermittently moving conveyer 32. The shaft 46 of the roller 48 of the conveyer 32 carries a pulley 34 supporting a belt 36 passing over pulleys 34, 38, 40, 44, 42, the pulleys 44 being attached to the shaft 24 through a one-way clutch, the pulleys 40, 44, 42 being mounted on the carriage 26. When the carriage reaches its right-hand position 18A, the conveyer 32 is driven by a motor at a speed greater than that of the belts 2, causing the belts 4 to be driven at the higher speed for transfer of a batch to the conveyer 32.