Multiple web unit handling apparatus with cut-off rolls

• US 4,453,706 A
• Filed: 03/21/1983
• Issued: 06/12/1984
• Est. Priority Date: 03/21/1983
• Status: Expired due to Fees

• Current Assignee: Paper Converting Machine Company (Barry-Wehmiller Group Incorporated)
• Original Assignee: Paper Converting Machine Company (Barry-Wehmiller Group Incorporated)
• Inventors: Bradley, John J.
• Primary Examiner(s): Eickholt, E. H.
• Application Number:
  US06/477,233
• Time in Patent Office: 449 Days
• Field of Search: 270/52-54, 270/51, 270/41, 493/435, 493/440, 198/644
• US Class Current: 270/52.07
• CPC Class Codes: B65H 39/06 from delivery streams

Abstract

A web unit handling apparatus wherein a plurality of web units are separately advanced along a plurality of delivery paths which are aligned along a lineal collection path, each web unit being transferred into the collection path and thereafter being advanced therein in synchronism with the other web units being transferred into the path.

Claims

1. Apparatus for producing stacks of web units comprising a frame,

a collection conveyor horizontally disposed on said frame,

means operably associated with said collection conveyor for moving the same at a predetermined speed,

a plurality of cutoff transfer devices successively aligned along said collection conveyor terminating in a discharge end, each said cutoff-transfer device including a transfer roll having an outer surface,

means associated with said transfer rolls for rotating the same to move said surface at said predetermined speed,

means for separately, advancing at slightly less than said predetermined speed a plurality of continuous webs, one into each of said cutoff-transfer devices, said cutoff-transfer devices providing individual web units,

means for controlledly transferring said individual web units from each of said cutoff-transfer devices to a series of points on said collection conveyor for advancing units thereon in synchronism with the units being delivered successively thereto to develop a series of stacks, each stack having a plurality of units therein,

said transferring means including belt means for traveling on said transfer roll in underlying relation to a web unit on said transfer roll whereby said belt means travels at said predetermined speed,

each said belt means being entrained about an idler roll spaced downstream relative to the path of collection conveyor movement from said transfer roll to provide a length of travel generally parallel to said collection conveyor to confine each individual web unit as the same is superposed onto a previously transferred individual web unit,

said surface of each of said transfer rolls, each said belt means and said collection conveyor all being arranged so that at the point of transfer of an individual web unit all of said transfer roll surface, belt means, individual unit and collection conveyor are traveling at the same speed and in the same direction whereby an individual web unit traveling with said transfer roll changes direction progressively during transfer without any substantial change in speed.

2. The apparatus of claim 1 in which an accumulator is provided at the end of said collection path for accumulating a number of said stacks into a larger stack.

3. The apparatus of claim 1 in which said cutoff-transfer device includes a vacuum port-equipped transfer roll, said transferring means including belt means for traveling on said transfer roll in underlying relation to a web unit on said transfer roll.