Method and an apparatus for suspending birds from an overhead conveyor
A method for suspending birds from an overhead conveyor, comprises the following sequence of steps: A) each bird is arranged in a holder with its legs and/or feet projecting from a first opening therein and its neck at a neck end, B) orientation of the feet is determined, C) the bird is rotated about an axis of rotation extending between the first opening and the neck end until a predetermined orientation of the legs and/or feet is reached, and D) the feet or legs of the bird are arranged in a shackle on the conveyor. The rotation may be achieved either by rotation the holder or by rotating the bird in the holder. In an apparatus according to the invention a monitoring station and a rotation station is provided for performing steps B) and C). The holders are preferably open-ended with a second opening at the neck end.
1. A method for suspending birds having body, neck, legs and possibly head and feet from an overhead conveyor, comprising the following sequence of steps:
A) each bird is arranged in a holder with its legs and/or feet projecting from a first opening therein and its neck at a neck end of the holder,
B) orientation of the legs and/or feet is determined,
C) the bird is rotated about an axis of rotation extending between a plane defined by the first opening of the holder and a plane defined by the neck end of holder until a predetermined orientation of the legs and/or feet is reached, and
D) the legs and/or feet of the bird are arranged in a shackle on the conveyor.
2. The method according to claim 1 , where the holder has a second opening at the neck end, and where, in step A), the bird is arranged with its legs and/or feet at the first opening and its neck at the second opening.
3. The method according to claim 1 , where, in step A), the bird is pulled into the holder, preferably by its head and/or neck.
4. The method according to claim 1 , where, prior to step A), the bird is lying on a support surface.
5. The method according to claim 1 , where, during step A), the holder is positioned so that the axis of rotation is substantially vertical or inclined at an angle not exceeding 45 degrees from a vertical plane.
6. The method according to claim 1 , where, after step A), the holder is tilted so that an angle of the axis of rotation in relation to a vertical plane is changed.
7. The method according to claim 1 , where the holder is rotated by being brought into engagement with a drive member of an external drive unit.
8. The method according to claim 1 , where an inner surface of the holder, which is in contact with the bird after the completion of step A) and located at a distance from the axis of rotation, is moved in a direction perpendicular to the axis of the rotation during step C), thereby forcing the bird to rotate.
9. The method according to claim 1 , where, in step B), a camera is used for determining the orientation of the feet and/or orientation of the legs, and where the rotation of the bird to be performed in step C) is calculated by a computer.
10. An apparatus for suspending birds having body, neck, legs and possibly head and feet from an overhead conveyor, comprising
a plurality of holders each having a neck end adapted from receiving the neck of a bird and a first opening from which the legs and/or feet of the bird may project,
a monitoring station for determining orientation of the legs and/or feet of each bird, and
a rotation station for rotating the bird about an axis of rotation extending between a plane defined by the first opening of the holder and a plane defined by the neck end of the holder.
11. The apparatus according to claim 10 , where the holders are hollow with a cavity corresponding substantially in size to the body of the birds to be processed, said holders preferably having a first opening and a second opening at the neck end.
12. The apparatus according to claim 11 , where the first opening has a larger diameter that the second opening so that the holder has the shape of an open-ended frustum of a cone.
13. The apparatus according to claim 11 , where each holder has a longitudinal slit extending between the first opening and the second opening.
14. The apparatus according to claim 10 , where the holders are made from a sheet material, preferably from stainless steel or a polymer.
15. The apparatus according to claim 10 , where each holder comprises an inner contact surface, which is located at a distance from the axis of rotation and moveable in a direction transverse to the axis of rotation, and which is adapted for being in contact with an outer surface of the bird, so that movement of the inner contact surface causes the bird to rotate.
16. The apparatus according to claim 15 , where the inner contact surface of the holder is a belt, preferably made from a sheet, mesh or interconnected modules and of rubber, plastic or metal.