Manual Vegetable Cutter With Retractable Knife for Clean Cube Cutting
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Solution Overview
Problem
Conventional manual vegetable cutters are inadequate for quickly cutting a variety of vegetables into sticks or cubes without risking user safety, requiring complex dismantling, and fail to prevent bacterial proliferation due to inaccessible food residues.
Innovation Solution
A manual vegetable cutter with a longitudinally mounted cutting knife that automatically adjusts between a working position for cutting sticks or cubes and a retracted position to avoid damaging vegetables during return phases, combined with a rotatable pusher for varied cuts and a stable foot support for secure use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the longitudinal cutting knife is mounted with triangular blades protruding from the frame, then vegetables can be cut into sticks or cubes during active phases, but the blades damage vegetables during return phases
Solution Approach 1:
The cutting knife is made movable between a working position where blades protrude for cutting and a retracted position where blades are withdrawn to avoid damaging vegetables during return phases. This dynamic adjustment resolves the contradiction by adapting the blade position to the operational phase.
Solution Approach 2:
The system automatically returns the cutting knife to the retracted position during return phases without external intervention. The carriage's to-and-fro translation automatically causes the knife to move between positions, making the system self-regulating.
2Productivity
If the carriage moves back and forth along guide rails for cutting, then vegetables can be processed quickly, but the return phases are inoperative and reduce overall efficiency
Solution Approach 1:
By retracting the cutting knife during return phases, the system prepares for the next cutting action without interruption. This eliminates idle time and ensures continuous productive operation, as the knife is already in position for the next active phase.
3Manufacturing precision
If the vegetable cutter is designed for stable support during use, then cutting precision is improved, but the device becomes harder to move and clean
Solution Approach 1:
The cutting knife is designed as a removable component that can be detached from the frame. This segmentation allows the knife to be easily removed for cleaning while the main frame remains stable during operation. The removable design also facilitates access to hard-to-reach areas for thorough cleaning.
Data Source
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AI summary
The cutter has a longitudinal cutting knife (15) cooperated with a positioning unit comprising two receiving crossheads (18) and actuating cams (19) permitting elastically mounted on both sides of a chassis between working and retracted positions. A set of equidistant triangular blades (17) is protruded at an upper surface of the chassis in a manner to cut vegetables into strips or cubes. The blades are retracted into a passage slit for passage of cut vegetables, where translation of a trolley during return phases automatically drives displacement of the knife in the retracted position.