Automatic cutting machine for continuous tapes
AssigneeCoats & Clark, Inc.
InventorEudor Louis Jovin
Life of this patent
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Abstract
In an automatic machine for cutting zippers from a common zipper tape, feed rollers are positioned to direct the common tape to the cutter. The sliders on the tape are detected by a photoelectric detector upstream of the feed rollers, in order to develop a signal of determined duration for enabling a bottom stop detector positioned upstream of the slide detector. A delay device is provided to actuate the cutter a determined time following detection of a bottom stop by the stop detector.
Claims12
An apparatus for cutting continuous tapes having distinguishable locations of first and second types regularly appearing thereon, comprising cutter means, control means for operating said cutter means, means for advancing said tape toward said cutter means at a determinable rate, first detecting means positioned to detect the passage of a location of said first type passed a first given position, second detecting means positioned to detect the passage of a location of the second type passed a second given position, first delay means responsive to detection of a location of said first type for enabling detection of a location of said second type for a second determined time period, and second delay means responsive to the detection of a location of said second type within said first determined period for energizing said control means a second predetermined time period after the detection of said location of said second type.
An apparatus for cutting zippers to a determined length from a continuous length of meshed adjacent chains of common zipper tape having bottom stops and slides positioned thereon;
- said apparatus comprising cutter means, feed roller means directing said common zipper tape to said cutter means, stop detector means positioned to detect the passage of said bottom stops at a determined position upstream of said cutter means, slide detector means responsive to passage of said slides at a second position upstream of said cutter means and connected to enable said stop detector means only during a first determined period following detection of a slide, and time delay means responsive to detection of a bottom stop by said stop detector means for activating said cutter means a determined time following detection of a bottom stop.
A method for cutting zippers to a determined length from a continuous length of meshed adjacent chains of common zipper tape having bottom stops and sliders regularly positioned thereon, said method comprising directing said common zipper tape to a cutter at a determined rate, detecting passage of a slider at a first position of said cutter, detecting passage of a bottom stop at a second position upstream of said cutter that occurs within a given time following said detection of a slider, and operating said cutter to sever said tape a determined time following said detection of a bottom stop.
Dependencies are inferred from the claim text.