Packaging material feeding device for a packaging machine
AssigneeSociete Anonyme des Plieuses Automatiques (SAPAL)
InventorEndre Pongracz
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Abstract
The present invention relates to a packaging material feeding device on a packaging machine with two winders. This system includes two driving servomotors 4, 34, winders 1, 31, a driving mechanism 24, 25 of the packaging material in the form of a strip, two coding devices 54, 56, and sensing devices 55, 57 which sense a signal corresponding to the instantaneous diameter of the activated packaging material reel and, in response thereto, supply a control signal for controlling the driving speed of these winders. The system also includes a press 17, 21 to automatically match the end of the strip of packaging material on the reel being unrolled to the beginning of the strip on the following reel.
Claims10
A device for feeding package material to a packaging machine comprising:
- at least first and second winders for receiving first and second reels of packaging material in strip form, respectively;
- winder driving means for alternately driving said winders independently of each other so that one reel is feeding packaging material while the other reel can be reloaded;
- packaging material driving means for driving the packaging material to said packaging machine;
- sensing means for sensing the speed of said packaging material and the instantaneous diameter of said real which is feeding;
- control signal supply means for supplying a control signal to said winder driving means for adjusting the driving speed of said winders in response to said sensing means;
- first and second ends of strip sensing devices for sensing the end of the packaging material from said reel which is feeding and for supplying an end of strip control signal;
- attaching means for attaching the end of the packaging material from said reel which is feeding to the beginning of the packaging material from said other reel;
- and
- actuating means for actuating said attaching means in response to said end of strip control signal.
Dependencies are inferred from the claim text.