| 摘要 |
<p>There is disclosed an apparatus for use in a bag forming/filling/sealing machine for controlling the operations of a film transportation motor, an article feeding motor, frame driving motor and a sealer opening-closing motor, wherein rotations of the film transportation motor and the article feeding motor are controlled based on the rotation of the frame driving motor. The rotation cycles of the film transportation motor, the article feeding motor and the frame driving motor are determined based on a reference pulse which is generated by a crystal oscillator and inputted to a central processing unit. When a value of the length of articles to be packaged is inputted to the central processing unit, the central processing unit specifies a cyclic variable speed of the frame driving motor based on data stored in a memory. The cyclic variable speed of the frame driving motor is properly controlled by comparing a feed-back pulse generated by an encoder with a reference pulse generated by the crystal oscillator, while rotational offsets of the film transportation motor and the article feeding motor are corrected based on a timing signal outputted from an electronic cam.</p> |
