Valve system for the count roll of an interfolding machine
First Claim
1. A machine for handling sheets of material, comprising:
- a roll including a plurality of vacuum passages configured to provide a vacuum pressure to an outer surface defined by the roll;
a vacuum assembly that communicates vacuum pressure to the roll, comprising;
a manifold having a plurality of vacuum inlet ports;
a valve body having a plurality of vacuum chambers;
a spool contained within the valve body, the spool being connected to the roll so as to rotate with the roll, and having a plurality of spool ports that define a plurality of respective vacuum paths which selectively communicate the vacuum pressure from the vacuum chambers of the valve body to the vacuum passages of the roll; and
a release valve for selectively exposing at least one of the vacuum paths of the spool to atmosphere to cut off the supply of vacuum pressure to the vacuum passages.
2 Assignments
0 Petitions
Accused Products
Abstract
An interfolding machine includes an assembly for and method of separating overlapped sheets of material at a desired sheet count. The assembly includes a vacuum assembly with a manifold having a plurality of vacuum inlet ports coupled to a valve body having a plurality of chambers. A spool is contained within the valve body and includes a plurality of ports to provide a plurality of respective vacuum paths to a rotating count roll. The spool also includes a plurality of inlet openings in its outer surface. Each opening in the spool communicates a respective set of count roll vacuum ports with a respective interior chamber of the valve body. A control valve selectively releases the vacuum pressure in the vacuum chambers to atmosphere. The selective application of vacuum pressure to the holes in the count roll creates a fold that separates the sheets to form separate stacks of sheets at the discharge of the interfolding machine.
9 Citations
8 Claims
-
1. A machine for handling sheets of material, comprising:
-
a roll including a plurality of vacuum passages configured to provide a vacuum pressure to an outer surface defined by the roll; a vacuum assembly that communicates vacuum pressure to the roll, comprising; a manifold having a plurality of vacuum inlet ports; a valve body having a plurality of vacuum chambers; a spool contained within the valve body, the spool being connected to the roll so as to rotate with the roll, and having a plurality of spool ports that define a plurality of respective vacuum paths which selectively communicate the vacuum pressure from the vacuum chambers of the valve body to the vacuum passages of the roll; and a release valve for selectively exposing at least one of the vacuum paths of the spool to atmosphere to cut off the supply of vacuum pressure to the vacuum passages. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
Specification