Device for taking pieces of material stuck to a substrate wound on a reel
OwnerBernardus G. Liestinginventor
Life of this patent
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Abstract
A device for removing adhesive labels or the like from a substrate in which a reel of the substrate material is rotatably mounted about an axis in a trough of a housing which also includes a horizontal guide supporting the substrate above the axis. The guide has a bending edge which separates label and substrate. The substrate is driven by rollers mounted below the axis and operated by a motor. A light source and photocell are disposed adjacent the bending edge for disabling the motor when a label is located therebetween.
Claims18
A device for removing adhesive labels or the like from a substrate comprising:
- a reel on which said substrate is wound;
- means for mounting said reel for rotation about an axis of rotation;
- a housing having a trough in which said reel is mounted with an open upper end, said housing including a horizontal guide having a horizontal surface for supporting said substrate situated at a level higher than said axis of rotation, and a bending edge for the substrate at the end of said guide surface remote from said trough;
- a light source disposed adjacent said bending edge;
- driving means located below said guide surface for engaging said substrate to pull said substrate past said edge so as to separate one at a time said labels from said substrate;
- a photo-electric cell disposed adjacent said bending edge for producing a given electrical signal indicating the presence of a separated label, when said label is located between said source and said cell;
- and
- circuit means connected to said photo-electric cell for disabling said driving means when said given signal is produced.
Control circuit for a device according to anyone of the preceding claims comprising a holding circuit means, a first photo transistor amplifying and switching means for bringing the holding circuit in an activating state, a second photo transistor amplifying and switching means for bringing the holding circuit means in a not-activating state, the holding circuit activating a mechanical transporting means and illumination means in its activating state, and comprising further means cooperating with the first photo transistor amplifying and switching means and the second photo transistor amplifying and switching means for bringing back the holding circuit means to its not-activating state in response upon the mechanical transporting means having transported a medium to be transported over a certain distance.
Dependencies are inferred from the claim text.