Fish Fillet Extraction with Wedge Deflectors

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Solution Overview

Problem

Existing methods for obtaining boneless fish fillets often result in residual pinbones being left in the meat or damaged during the filleting process, leading to reduced quality of the fillets.

Innovation Solution

A method and device that involves making specific cuts to keep pinbones connected to the spinal column, widening the parting lines between the bones and fillets, and using wedge-shaped fillet deflectors to gently pull the fillets away from the bones, ensuring all bones remain on the spine while extracting the fillets without damage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If pinbones are separated from the spinal column and then removed, then boneless fillets can be obtained, but the process complexity increases and time is lost due to separate operations

Engineering Contradiction:

Improvefilleting efficiencyVSAvoidprocess complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The invention combines the separation of pinbones from the spinal column and the removal of pinbones from the meat into a single integrated operation. The deflector device simultaneously pushes the pinbones away from the spinal column and guides them out of the meat, eliminating the need for separate operations and reducing process complexity while maintaining productivity

Inventive Principle:

Principle #5Merging (Combining)

2Productivity

If deformation forces are applied to pull pinbones out of the meat, then pinbones can be removed, but the pinbones may become detached from the spinal column and tear the meat

Engineering Contradiction:

Improvedeboning effectivenessVSAvoidmeat integrity

Core Design Contradiction:

ProductivityVSManufacturing precision

Solution Approach 1:

The deflector acts as an intermediary device between the pinbones and the meat. Instead of applying direct deformation forces that could tear the meat, the deflector gently pushes the pinbones away from the spinal column and guides them out of the meat through a controlled path, maintaining meat integrity while achieving effective deboning

Inventive Principle:

Principle #24Intermediary (Mediator)

3Productivity

If pinbones are pressed parallel to the spine, then they can be pulled out, but they may become detached from the spinal column causing quality reduction

Engineering Contradiction:

Improvepinbone removal efficiencyVSAvoidpinbone attachment stability

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The invention extracts the pinbones from the meat in a controlled manner using the deflector device. The deflector pushes the pinbones away from the spinal column and guides them out laterally, removing them from the meat without requiring them to be pressed parallel to the spine, thus maintaining their attachment stability while achieving effective removal

Inventive Principle:

Principle #2Taking out (Extraction)

Data Source

PatentEP3102041B1Method and device for mechanically obtaining meat from fish

Publication Date: 2019.04.03 NORDISCHER MASCHINENBAU RUD BAADER GMBH CO KG

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Figure 5~6

AI summary

The invention relates to a method for automatically extracting flesh from fish. By introducing cuts, the backbone (16) and the ventral bones are removed from the laterally arranged fillets (11) without separating the pin bones (9) from the spine (1), and the joints formed by the cuts are then expanded, thereby removing the lateral fillets (11) from the spine of the fish in the lateral direction (Y) transversely to the backbone (16), wherein the fillets (11) are drawn from the pin bones (9) extending laterally away from the spine (1) or from the flank bones (6). The invention also relates to a corresponding device for automatically obtaining the flesh of fish.