Rotating Segmented Watermelon Cutter for Uniform Pulp Cutting
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Solution Overview
Problem
Cutting large fruits like watermelon and cantaloupe into small, uniform pieces is time-consuming and labor-intensive using conventional cutters, especially when precise size and shape are required, particularly in commercial settings.
Innovation Solution
A watermelon cutter with a handle and storage device featuring divergently arranged blades that rotate when pushed by the fruit pulp, allowing efficient cutting and storage of uniform block-shaped pieces, reducing manual effort and time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a conventional cutter is used to cut watermelon into small pieces, then the cutting can be completed, but it requires many repeated cutting movements which is time-consuming and laborious
Solution Approach 1:
The cutter blade is divided into multiple segments (first blade segment, second blade segment, third blade segment) arranged radially around the rotation axis. This segmentation allows the blade to cut multiple pieces of watermelon simultaneously in one rotation, dramatically increasing cutting productivity compared to conventional single-blade cutters.
Solution Approach 2:
The cutter blade is designed to rotate around a central axis during cutting operations, transforming from a static conventional cutter to a dynamic rotating cutting system. This rotational motion enables the blade to continuously engage with the watermelon, cutting multiple pieces in sequence during a single rotational cycle, thereby reducing the number of repeated cutting movements required.
2Manufacturing precision
If conventional cutting methods are used, then cutting can be performed, but achieving uniform size and shape of pulp pieces requires precise manual control which is labor-intensive
Solution Approach 1:
The blade is segmented into multiple cutting edges (first, second, third blade segments) positioned at different radial distances from the rotation axis. This segmentation creates multiple cutting zones that work simultaneously, ensuring that watermelon is cut into uniformly sized pieces regardless of manual pressure variations, thereby improving manufacturing precision while reducing operational complexity.
Solution Approach 2:
The cutting action transitions from linear hand movements to rotational motion around a central axis. By adding the rotational dimension, the system achieves uniform cutting through the geometric consistency of circular motion, eliminating the need for precise manual control of cutting depth and angle, thus improving ease of operation while maintaining uniformity.
3Reliability
If a complex storage device is designed to store cut pulp, then pulp can be kept clean and organized, but the device complexity and manufacturing cost increase
Solution Approach 1:
The storage device merges multiple functions into a single integrated structure: it serves as both the housing for the cutter components and the container for storing cut pulp. The housing encloses the rotation axis, blade segments, and spring mechanism while providing a storage cavity at the bottom. This merging reduces device complexity and manufacturing cost compared to having separate storage containers, while still maintaining pulp cleanliness through the enclosed design.
Solution Approach 2:
The housing structure performs multiple functions: it protects the cutting mechanism, provides structural support, and serves as the storage container for cut pulp. The bottom surface of the housing forms both the base of the cutting chamber and the storage cavity floor. This multi-functionality eliminates the need for additional separate storage components, reducing overall device complexity while ensuring pulp cleanliness through the integrated enclosed structure.
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 enables quick and efficient cutting of large fruit pulps into uniform pieces, saving time and labor, while maintaining the integrity and minimizing juice loss, with a simple and cost-effective design.
Implementation Method 1
a spring component (44) disposed at a lower side of the rotation shaft (5)
Data Source
AI summary
The present invention discloses a watermelon cutter including a handle and a cutter, wherein a front end of the handle is connected with a storage device; a front end of the storage device is provided with a cutting opening, and the cutter includes a plurality of blades; the plurality of blades is arranged in a divergently manner and rotatably mounted in the cutting opening; the plurality of blades of the cutter is arranged such that one of the plurality of blades is driven by a pulp to drive the cutter to rotate when the pulp enters into the cutting opening, and the pulp is cut out by another one of the plurality of blades when the cutter is rotated.