Foldable Stirring Cutter Design to Prevent Blade Jamming and Damage
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Solution Overview
Problem
Current stirring cutters with fixed blades are prone to damage from lever forces during collisions with stirred materials and easily jammed by large heterogeneous materials, leading to poor user experience.
Innovation Solution
A foldable stirring cutter design featuring a bearing component with detachable force-controlled cutter components that unfold under centrifugal force and fold when encountering excessive lever force, preventing jamming and reducing damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a fixed blade structure is used, then the stirring cutter can maintain structural simplicity, but the blade is easy to be damaged by lever force generated after collision with stirred material
Solution Approach 1:
The blade structure is changed from fixed to dynamic/foldable. The blade can rotate around a pivot point and automatically adjusts its position based on the forces it encounters. When collision force is detected, the blade folds backward to avoid damage, and when no collision occurs, it maintains its stirring position, thus resolving the contradiction between structural simplicity and damage resistance.
Solution Approach 2:
The blade's spatial configuration parameter changes dynamically. It transitions between two states: an extended stirring position and a folded protective position. This parameter change allows the blade to adapt to different operational conditions, maintaining simplicity when not under stress while providing strength when collision occurs.
2Stability of the object's composition
If a fixed blade structure is used, then the stirring cutter can maintain operational consistency, but the blade is easy to be jammed by large heterogeneous stirred material
Solution Approach 1:
The blade becomes dynamic rather than fixed, allowing it to respond to different material sizes. When encountering large heterogeneous material, the blade can fold backward to avoid jamming, and when processing normal materials, it maintains consistent stirring operation, thus resolving the contradiction between operational consistency and jaming resistance.
3Reliability
If the blade is designed to be foldable, then the blade can avoid damage and jamming, but the device complexity increases
Solution Approach 1:
The blade structure is segmented into multiple parts: a blade body, a pivot connection point, and a support mechanism. This segmentation allows the blade to fold independently while keeping the overall structure relatively simple. The pivot point acts as a natural hinge, requiring minimal additional components to achieve the folding capability, thus resolving the contradiction between reliability and complexity.
Solution Approach 2:
The blade structure utilizes the collision force itself to trigger the folding action. When the blade encounters large material or excessive force, the force automatically causes the blade to fold backward around the pivot point, without requiring external sensors or control systems. This self-service mechanism maintains simplicity while improving durability.
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 foldable design adapts to different stirring conditions, ensuring effective material mixing without jamming and minimizing blade damage by switching between unfolded and folded states based on centrifugal and lever forces.
Implementation Method 1
The force-controlled cutter components deflect and unfold around axes of the movable connection assemblies under action of a centrifugal force
Implementation Method 2
the force-controlled cutter components deflect and fold around the axes of the movable connection assemblies under action of a lever force borne after collision with a stirred material
Data Source
AI summary
A foldable stirring cutter includes a cutter assembly rotationally disposed on a base; a bearing component detachably disposed on the cutter assembly and including a central bearing plate and equally spaced extension plates having an internally threaded connection hole; cutter components including a cutter handle, a cutter body, and a blade portion; and movable connection assemblies including a through hole through the cutter handle, an arc-shaped limiting groove in the through hole, an internally threaded limiting rod having a threaded portion on a lower portion of an outer surface and being threadedly fastened in the connection hole, and a limiting block on an upper portion of the outer surface of the limiting rod and being moveable in the limiting groove, and a limiting bolt being driven through the through hole to secure to the limiting rod. The cutter assembly folds in response to hitting a stirred material.