Poultry Skinning Roller Shoe Gap Design
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Solution Overview
Problem
Existing automated skinning installations for poultry parts, particularly for breast areas, suffer from low efficiency and quality, often requiring manual removal of residual skin and frequent jamming issues.
Innovation Solution
A skinning installation featuring a toothed roller with an elongated shoe having a central nose portion with an arcuate surface and bridging portions, designed to grip and remove skin efficiently, with adjustable gaps and clearances to accommodate skin with fat chunks, and optional features like push protrusions and final release cams for improved skin removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If automated skinning installations use conventional roller and shoe designs, then automation is achieved, but skinning quality deteriorates and manual removal of residual skin is frequently required
Solution Approach 1:
The shoe is divided into distinct functional portions: a central nose portion with an arcuate surface for initial skin engagement, and bridging portions with clearances for accommodating fat chunks. The skinning roller is segmented with teeth of specific dimensions. This segmentation allows each portion to perform its specific function optimally, achieving complete automated skinning without manual intervention.
Solution Approach 2:
Different portions of the shoe have different structural characteristics tailored to their specific functions. The central nose portion has an arcuate surface matching the roller curvature for precise skin engagement, while the bridging portions have larger clearances for passing fat chunks. This local differentiation resolves the contradiction by enabling automated operation while maintaining high skinning quality.
2Extent of automation
If automated skinning installations use conventional roller and shoe designs, then automation is achieved, but reliability deteriorates and jamming occurs frequently requiring manual assistance
Solution Approach 1:
The shoe design incorporates specific dimensional parameters: a skin gripping gap of 0.1-0.5mm between the arcuate surface and roller, and bridge clearances of 1-20mm. These parameter changes allow the automated system to accommodate variations in skin and fat chunk sizes, preventing jamming and ensuring reliable continuous operation without manual assistance.
3Device complexity
If conventional skinning devices are used, then simple structure is maintained, but productivity deteriorates due to frequent manual intervention
Solution Approach 1:
The shoe is segmented into a central nose portion and bridging portions, each with specific functions. This segmentation enables complete automated skinning without manual intervention, significantly improving productivity while maintaining relatively simple device structure. The segmented design allows the device to handle skin with fat chunks effectively.
Solution Approach 2:
The bridging portions with clearances allow fat chunks to pass through automatically during the skinning process, enabling the device to service itself without manual intervention. This self-service capability maintains simple structure while dramatically improving productivity by eliminating the need for manual assistance to remove jammed skin.
4Device complexity
If conventional skinning devices are used, then simple structure is maintained, but manufacturing precision deteriorates resulting in residual skin requiring manual removal
Solution Approach 1:
The central nose portion has an arcuate surface with curvature matching the roller, creating a precise skin gripping gap of 0.1-0.5mm. This local quality enhancement in the skin engagement area ensures complete skin removal without residual skin, achieving high manufacturing precision while maintaining overall simple device structure.
Solution Approach 2:
Dividing the shoe into functional segments with specific geometries enables precise skin engagement in the central nose portion while maintaining simple overall structure. The segmentation allows each portion to be optimized for its specific function, achieving complete skin removal without complex device design.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution enhances skinning efficiency and quality, reducing poultry part damage and increasing yield by effectively removing skin from breast and other areas without manual assistance, capable of processing high volumes of poultry.
Implementation Method 1
a toothed skinning roller which is rotatably supported by the support frame and has teeth gripping the skin
Implementation Method 2
the side of the nose portion facing the skinning roller comprises an arcuate surface having a curvature corresponding essentially to the curvature of the skinning roller, wherein a skin gripping gap is defined between the arcuate surface of the central nose portion and the skinning roller
Implementation Method 3
at least one bridging portion between the central nose portion and the end of the shoe that is fastened to the support frame, arranged downstream of the leading skin gripping edge when seen in the rotation direction of the skinning roller, wherein a bridge clearance is defined between the bridging portion and the skinning roller
Data Source
AI summary
A skinning installation is adapted to remove skin from slaughtered poultry parts, e.g. from a part including the breast. A method for removing skin from slaughtered poultry parts, e.g. from the breast, uses the skinning installation. The installation includes a toothed skinning roller and an elongated shoe extending adjacent and essentially parallel to the toothed skinning roller. The shoe includes a central nose portion which is directed counter to the rotation direction of the skinning roller, having two side edges and a leading skin gripping edge, wherein the side of the nose portion facing the skinning roller comprises an arcuate surface having a curvature corresponding essentially to the curvature of the skinning roller, wherein a skin gripping gap is defined between the arcuate surface of the central nose portion and the skinning roller. The shoe further includes at least one bridging portion between the central nose portion and the end of the shoe that is fastened to the support frame, arranged downstream of the leading skin gripping edge when seen in the rotation direction of the skinning roller, wherein a bridge clearance is defined between the bridging portion and the skinning roller.