Poultry skinner belt profile
An endless conveyor belt may include a belt body having a belt longitudinal axis and an exterior side. A plurality of protrusions project from the exterior side of the belt body and extend across a width of the belt body substantially transversely to the belt longitudinal axis. A plurality of corresponding valleys are defined between each of the plurality of protrusions and extend across the width of the belt body substantially transversely to the belt longitudinal axis. When a piece of poultry is positioned on the exterior side of the belt body, substantially only a skin portion of the piece of poultry is received within the valleys, and an underlying fat portion and a meat portion of the piece of poultry remains disposed substantially above a top surface of the plurality of protrusions.
1 . An automated skin removal machine, comprising:
a skinning station, comprising:
a pinch block including an arcuate pinch surface; and
a hold down structure positioned above the pinch block and configured to impose a downward force on a piece of poultry passing through the skinning station;
an infeed conveyor for transporting poultry pieces to the skinning station, the infeed conveyor having an infeed endless conveyor belt configured to wrap around an end roller positioned adjacent to the arcuate pinch surface of the pinch block, the infeed endless conveyor belt comprising:
a belt body having a belt longitudinal axis and an exterior side;
a plurality of protrusions projecting from the exterior side of the belt body and extending across a width of the belt body substantially transversely to the belt longitudinal axis, wherein a truncated top surface of the plurality of protrusions is configured to substantially engage the arcuate pinch surface of the pinch block when the infeed endless conveyor belt wraps around the end roller; and
a plurality of corresponding valleys defined between each of the plurality of protrusions and extending across the width of the belt body substantially transversely to the belt longitudinal axis,
wherein when a piece of poultry is positioned on the exterior side of the belt body, substantially only a skin portion of the piece of poultry is received within the valleys, and wherein an underlying fat portion and a meat portion of the piece of poultry remains disposed substantially above the truncated top surface of the plurality of protrusions, and
wherein when the piece of poultry passes over a leading edge of the arcuate pinch surface of the pinch block, the skin portion becomes entrapped between the exterior side of the belt body and the arcuate pinch surface of the pinch block such that upon continued translation of the infeed endless conveyor belt, the skin portion is pulled away from the meat portion and at least some of the fat portion; and
an outfeed conveyor for transporting skinned poultry pieces away from the skinning station.
2 . The automated skin removal machine of claim 1 , wherein each of the plurality of protrusions has a cross-sectional shape generally of a truncated isosceles triangle.
3 . The automated skin removal machine of claim 2 , wherein each of the plurality of protrusions has a first protrusion side extending upwardly from a bottom side extending along the belt body and a second protrusion side extending upwardly from the bottom side, the first and second protrusion sides substantially equal in length and longer than a length of the bottom side.
4 . The automated skin removal machine of claim 1 , wherein each valley defines a curved surface extending between adjacent protrusions.
5 . The automated skin removal machine of claim 1 ,
wherein a first opening flight angle is defined between first and second adjacent protrusions when the endless conveyor belt is in a substantially flat configuration, and
wherein a second opening flight angle greater than the first opening flight angle is defined between first and second adjacent protrusions when the endless conveyor belt wraps around a roller of a conveyance system.
6 . The automated skin removal machine of claim 5 , wherein the first opening flight angle is about eighty-five degrees (85°), and wherein the second opening flight angle is about ninety degrees (90°).
7 . The automated skin removal machine of claim 3 , wherein the first and second protrusion sides each have a length of about 6.91 mm, and the bottom side has a length of about 9.37 mm.
8 . The automated skin removal machine of claim 3 , wherein a first angle defined between the first protrusion side and the bottom side is about forty-seven and a half degrees (47.5°), and a second angle defined between the second protrusion side and the bottom side is about forty-seven and a half degrees (47.5°).