Filling machine, chain-driven clamping jaw system for packaging filling machine and tensioning device

The utility model discloses a tensioning device of a chain driving type clamping jaw system used in a packaging filling machine. The chain drive jaw system has a stationary cam and a chain as a follower. The tensioning device comprises a chain tensioning element. The chain tensioning element is shaped and angled to receive the chain on its outer surface, the outer surface is configured to be far away from the center of the chain driving clamping jaw system; wherein the chain tensioning element comprises a pivot connection, and wherein the chain tensioning element is configured to be integral with the stationary cam at the pivot connection such that the chain tensioning element abuts the stationary cam at the pivot connection and is movable to tension the chain. The utility model further discloses a filling machine and a chain driving clamping jaw system used for packaging the filling machine. 本实用新型公开了一种用于包装填充机中的链条驱动式夹爪系统的张紧装置。该链条驱动夹爪系统具有固定凸轮和作为从动件的链条。该张紧装置包括链条张紧元件，该链条张紧元件成形且成角度以便在其外表面上接收该链条，该外表面构造成远离该链条驱动夹爪系统