FIELD: processing industry. SUBSTANCE: invention can be used for metering out and packing of different loose materials (granular materials of different application, fine and medium-size abrasive materials, chemical materials, etc). Proposed shaping device of automatic packer contains forming tube secured in support with columns, collar and film pulling mechanism. The latter is self-balancing system containing two branches interacting according to mirror principle, each branch being two-link mechanism. Said two-link mechanism is made so that connecting rod of one of link mechanisms is mounted on second link mechanism for rocking and is mechanically coupled with fixed follower through resilient member, for instance, spring. Axles are mounted on connecting rods of link mechanisms coupled with follower. Gear wheels fitted on axles are mechanically intercoupled by serrated belts. One of gear wheels if rigidly secured on axle mechanically coupled with second branch. EFFECT: provision of automatic pressing of pulling belts to forming tube depending on parameters of packing film materials. 2 cl, 2 dwg
