Sealing unit and a suspension for a sealing jaw utilized in such sealing unit

摘要

A sealing unit for sealing and forming a packaging container is disclosed. The sealing unit operates on a principle that the motion of a pair of opposing sealing jaws is controlled by a cam-cam follower interaction combined with the action of a servomotor driving a cam wheel.

主权项

1. Sealing unit for sealing and forming an open end of a packaging container, comprising a pair of sealing jaws arranged on a pair of tongs controlled by a first and a second cam arrangement each comprising:
a cam track, a cam follower and a rigid power-transfer arrangement, wherein both cam tracks are arranged on a single cam wheel and arranged to move the first and second cam followers in opposite directions, a servomotor is arranged to drive the cam wheel intermittently between an open position, for the sealing jaws, and a closed position, for the sealing jaws.