Rolled web material feed assembly
A feed assembly for dispensing rolled web material from a bulk roll of material and that includes a feed drum and a pair of pinch rollers that cooperate with the feed drum. The feed drum and pinch rollers are oriented and constructed to mitigate jamming and/or undesired displacement of the web material as it progresses through the feed assembly. Preferably, a drum guard is disposed between the pinch rollers and is constructed to further mitigate undesired translation of the web material relative to the feed assembly during dispense operations.
1. A feed assembly for use in a rolled web material dispenser, the feed assembly comprising:
a first support and a second support that are each constructed to be supported by an enclosure of a rolled web material dispenser;
a feed drum extending between the first support and the second support such that the feed drum is rotational relative thereto;
a first pinch roller oriented forward of the feed drum and biased toward an exterior surface thereof;
a second pinch roller oriented generally below the feed drum such that an axis of rotation of the second pinch roller is radially offset from an axis of rotation defined by the first pinch roller and such that an exterior surface of the second pinch roller is translated toward the exterior surface of the feed drum in response to web material passing therebetween;
a drum guard oriented to extend along a radial portion of a circumference of the feed drum and disposed between the first pinch roller and the second pinch roller; and
a toothed surface formed along a portion of the drum guard oriented toward the second pinch roller.
2. The feed assembly of claim 1 further comprising a rubber layer formed about an exterior surface of at least one of the first pinch roller and the second pinch roller.
3. The feed assembly of claim 2 wherein the rubber layer is compressed toward the exterior surface of the feed drum.
4. The feed assembly of claim 1 further comprising a holder that supports the first pinch roller and is pivotably engaged with the first support and the second support.
5. The feed assembly of claim 1 further comprising a plurality of fingers extending from a drum facing surface of the drum guard and oriented such that each finger traverses an imaginary plane defined by a cross-sectional footprint of the feed drum.
6. The feed assembly of claim 5 wherein at least one of the fingers includes a guide shoe that extends in a direction generally aligned with an axis of rotation of the feed drum.
7. The feed assembly of claim 1 disposed in a housing defined by a cover that is pivotably connected to a base and having a pair of opposing roll support hubs disclosed generally above the feed assembly.
8. A method of forming a rolled web material feed assembly, the method comprising:
providing a feed drum that is rotationally supported between a first mount arm and a second mount arm;
constructing the first mount arm and the second mount arm to cooperate with a rolled web material dispenser housing;
providing a first pinch roller and a second pinch roller that are disposed about the feed drum;
providing a compressible layer on at least one of the first pinch roller and the second pinch roller;
providing a drum guard that defines at least one radially extending material guide that extends across a radial footprint of the feed drum and is disposed between the first pinch roller and the second pinch roller; and
forming a toothed surface on an edge of the drum guard that is nearer the second pinch roller.
9. The method of claim 8 further comprising providing a compressible layer on an exterior surface of the other of the first pinch roller and the second pinch roller.
10. The method of claim 8 further comprising orienting an axis of rotation defined by the first pinch roller substantially forward of an axis of rotation of the feed drum and orienting an axis of rotation defined by the second pinch roller substantially below the axis of rotation of the feed drum.
11. The method of claim 8 further comprising forming a plurality of material guides that extend from the drum guard.
12. The method of claim 11 further comprising forming a shoe on an edge of at least one of the plurality of material guides and such that the shoe extends in a crossing direction relative to the at least one of the plurality of material guides.