Slicer Pawl Mechanism for Cutting Thickness Safety
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Solution Overview
Problem
Existing cutting machines lack a universal safety standard and often expose users to injury due to unintentionally wide cutting gaps, which can lead to accidents during normal operation.
Innovation Solution
A cutting machine equipped with a pivotable and displaceable pawl that interacts with the adjusting device to limit the maximum cutting thickness, allowing for a defined slice thickness limit, preventing unintentional large cuts and enhancing safety by requiring deliberate intervention for thicker settings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the cutting gap is made adjustable to allow thick slices, then versatility is improved, but safety deteriorates due to risk of unintentionally wide gaps
Solution Approach 1:
The pawl applies a preliminary counteracting force to the adjusting device that prevents rotation beyond the maximum thickness setting. This anti-action is built into the system beforehand through the spring-loaded pawl mechanism that engages with the adjusting device's cam profile, creating a mechanical barrier against unintentional over-adjustment before it can occur.
Solution Approach 2:
The pawl acts as an intermediary element between the adjusting device and the user's adjustment input. It mediates the adjustment process by allowing controlled movement within safe limits while blocking movements that would create dangerous cutting gaps, thus protecting the user without completely preventing thickness adjustment.
2Object-affected harmful factors
If a maximum thickness limit is set to improve safety, then injury risk is reduced, but versatility deteriorates due to inability to cut thicker slices
Solution Approach 1:
The pawl mechanism transitions from a static limiting structure to a dynamic system with two distinct states: a locked state where the pawl engages the adjusting device to prevent rotation beyond the maximum setting, and an unlocked state where the pawl is retracted allowing full adjustment range. This dynamic switching capability enables the system to adapt between safety mode and versatility mode as needed.
Solution Approach 2:
The system changes its operational parameter (adjustment range) based on the state of the pawl. In the engaged state, the effective adjustment range is limited to safe values only. When the pawl is disengaged, the full adjustment range becomes accessible. This parameter change allows the same physical system to serve both safety and versatility requirements at different times.
3Device complexity
If the pawl directly engages the stop plate, then simplicity is improved, but reliability deteriorates due to dirt exposure and instability
Solution Approach 1:
The pawl engages with the adjusting device's cam profile rather than directly with the stop plate, using the adjusting device as an intermediary. This intermediary connection provides mechanical advantage through the cam mechanism, creates a more stable engagement geometry, and protects the pawl from direct exposure to dirt and debris that would be present in the cutting area near the stop plate.
Solution Approach 2:
The direct mechanical contact between pawl and stop plate is replaced by an indirect engagement through the adjusting device's cam mechanism. This substitution transforms a simple but unreliable direct contact system into a more complex but reliable system that uses the adjusting device's existing mechanical structure to provide stable, precise limiting action.
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 increases operational safety by preventing unintentionally large cutting gaps and providing a secure mechanism for setting larger thicknesses only when necessary, thus reducing the risk of injury and enhancing user protection.
Implementation Method 1
23pawl (23), which is spring-loaded in the direction of the groove (24)
Data Source
Figure 1
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AI summary
The invention relates to a slicer (1) for cutting slices of a strand-shaped food, wherein the cutting thickness and thus the thickness of the cut food slices can be set by means of an adjusting device (2) and a stop plate (13) connected to the adjusting device. In order to enable high operational safety and nevertheless a large range of application of the slicer (1), the maximum settable cutting thickness according to the invention is optionally limited in that a pivotable and/or displaceable locking pawl (23) can be brought into engagement with the adjusting device (2) and limits the maximum settable cutting thickness.