Knife assemblies of slicing machines, methods of clamping and releasing knives therefrom, and slicing machines equipped therewith
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Solution Overview
Problem
Existing slicing machines, such as the Model CC® machines, face challenges in securely attaching shaped knives, like corrugated knives, to the cutting head without requiring complete removal of bolts for knife replacement, and ensuring proper alignment during clamping.
Innovation Solution
A knife assembly design featuring a clamp with a base portion and knife-engaging portion having complementary shapes, utilizing slots for fasteners to apply a clamping load while preventing translation in the leading direction, allowing the clamp to be removed by translating in the leading direction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a clamp with slots for fasteners is used to secure shaped knives, then the knife can be securely attached with proper alignment, but the clamp cannot be easily removed without complete bolt removal
Solution Approach 1:
The slot geometry transitions from a constrained configuration during clamping to an unlocked configuration during removal. The non-circular slot shape (e.g., D-shaped, oval, or with asymmetric features) allows the fastener to be retained in one direction while permitting removal in another direction, enabling easy clamp detachment without complete bolt removal.
Solution Approach 2:
The removal function is segmented from the clamping function through the slot design. The slot provides a retention path for the fastener during normal operation but includes a removal path that allows the fastener to be partially withdrawn or repositioned, separating the security function from the removal function.
2Adaptability or versatility
If shaped knives like corrugated knives are used, then slicing versatility is improved, but alignment during clamping becomes more difficult
Solution Approach 1:
The clamp and knife holder feature localized alignment surfaces and geometric constraints specifically designed for shaped knives. The slot geometry and clamping surfaces are tailored to accommodate the specific shape (e.g., corrugated, circular, square) of different knives, providing precise alignment for each knife type while maintaining versatility.
Solution Approach 2:
The knife assembly system is designed to accommodate multiple knife shapes and types through a universal clamp mechanism. The slot configuration and clamping surfaces can adapt to different knife geometries, allowing a single clamp design to securely hold and align various knife types including flat, corrugated, circular, and square knives.
3Reliability
If the clamp structure is made robust to prevent translation, then knife security is improved, but the device complexity increases
Solution Approach 1:
The slot geometry employs asymmetric features that provide robust constraint in the directions where translation must be prevented (radial and axial directions) while allowing freedom or easy release in the removal direction. This asymmetric design achieves stable clamping without requiring complex multi-directional constraints.
Solution Approach 2:
The slot acts as an intermediary element between the fastener and the clamp body. It provides the necessary constraint functions (preventing unwanted translation) while simplifying the overall structure by eliminating the need for multiple separate constraint features, thus reducing device complexity while maintaining reliability.
Data Source
AI summary
Knife assemblies for securing knives to slicing machines, slicing machines equipped therewith, and methods of operating knife assemblies for securing knives to and releasing knives from slicing machines. Such a knife assembly includes a knife holder having a knife support surface, a knife supported on the knife support surface, and a clamp having a base portion adjacent a trailing edge of the clamp and a knife-engaging portion adjacent a leading edge of the clamp. The knife assembly applies a clamping load to the clamp to secure the knife to the knife holder. The clamp is prevented from translating relative to the shaped knife in a leading direction of the knife assembly as the clamping load is applied and/or permits removal of the clamp by being translated in the leading direction.