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High volume adjustable vacuum assembly for a roll in an interfolding machine

  • US 20050082332A1
  • Filed: 10/15/2004
  • Published: 04/21/2005
  • Est. Priority Date: 10/16/2003
  • Status: Active Grant
First Claim
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1. A vacuum assembly for a rotating roll for handling sheet or web material, the rotating roll including a plurality of holes in an outer surface and passages that open onto a face of the roll that are in communication with the plurality of holes, wherein the holes are adapted to communicate a vacuum for holding and releasing the sheet or web material, comprising:

  • a vacuum manifold located in line with and outwardly of the roll face, wherein the vacuum manifold defines an internal cavity that is supplied with vacuum from a vacuum source; and

    a valve assembly positioned between the roll face and the vacuum manifold, wherein the valve assembly includes a passage arrangement configured to communicate vacuum throughout a portion of the rotation of the roll from the internal cavity of the vacuum manifold to the passages that open onto the roll face.

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