PACKING DEVICE Russian patent published in 2002 - IPC

FIELD: food industry, medicine, vending equipment. SUBSTANCE: invention relates to equipment for successively packing materials in shrinkable envelopes made of sheet film material in one of which pockets are formed by thermal evacuation. Proposed device has upper and lower film roll holders secured on bed frame, film step feed mechanisms operated by grips spaced over periphery and made vertically split with movable dies, device for vacuum thermal forming of containers and thermowelding unit, and also knives and discharge slide. Heating device is installed separately from container vacuum forming device. Level limiter is hinge secured before thermowelding unit. Level limiter is electrically coupled with film feed reciprocating mechanism drive made in form of carriage spatially limited by rollers. Carriage has symmetrically secured longitudinal supports for spring- loaded grips furnished with pushers. Cross knife is installed over movable support after thermowelding unit. Parallel disk knives are mounted along direction of movement of containers and they adjoin discharge slide. Heater support and container vacuum forming die and thermowelding unit die and cross knife support are provided with independent drives. Such design provides higher functional reliability of vacuum packing machine, simplified design, facilitated adjustment of operating mechanisms and their accuracy. EFFECT: improved quality of package. 2 cl, 3 dwg