Handheld Cutting Device with Multi-Position Blade
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing cutting devices for textiles and similar materials are inefficient due to complex designs, limited cutting edge positions, and the need for tool-based blade replacement, which increases the risk of injury and damage.
Innovation Solution
A handheld cutting device with a non-rotating cutting edge and interchangeable polygonal cutting elements, featuring a secure ergonomic handle, a support and guiding system without moving parts, and a feed channel design for efficient cutting, allowing for easy edge shifting and replacement without tools, and providing an indication for blade replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional single-edge razor blade holder is used, then the cutting edge is protected except for a portion exposed at the end of a guide slot, but the blade has to be dismounted when shifting to a new edge and only two possible positions are available
Solution Approach 1:
The cutting element is segmented into multiple independent cutting edges (at least three positions) along its length. Each edge can be independently positioned into the cutting position, allowing the user to select a fresh edge without replacing the entire cutting element, thus reducing blade replacement frequency and complexity
Solution Approach 2:
The cutting element is made movable along the guide slot relative to the holder body. This dynamic positioning allows the cutting element to be shifted to expose different edges while remaining securely mounted, eliminating the need for complete disassembly and reassembly when changing edges
2Ease of repair
If a bandage cutter with a special cutting element is used, then the cutting element can be dismounted without tools, but there is no possibility to shift the position of the element to expose a new fresh portion of the cutting edge
Solution Approach 1:
The cutting element incorporates multiple cutting edges at different positions along its structure. This segmentation allows selective exposure of different edges by shifting the element along the guide slot, providing versatility in cutting edge selection while maintaining easy replacement capability
Solution Approach 2:
The cutting element is designed with dynamic positioning capability along the guide slot, allowing it to be shifted to expose different edges. This dynamic feature provides adaptability in cutting edge selection while maintaining the ease of complete replacement when needed
3Adaptability or versatility
If a cutting device with a free rotating circular disc is used, then the cutting element can rotate, but the design becomes complicated with several moving elements and adjustment needs and efficiency is poor
Solution Approach 1:
The rotating movement is extracted and eliminated from the cutting element design. Instead of rotation, the cutting element moves linearly along a fixed guide slot to position different edges. This removes the complexity of rotating mechanisms while maintaining the ability to position cutting edges
Solution Approach 2:
The cutting element incorporates controlled linear movement along the guide slot rather than rotation. This dynamic positioning allows selective exposure of different edges through simple linear displacement, achieving positioning flexibility without the complexity of rotating mechanisms
4Productivity
If a cutting device with multiple cutting edges is used, then fresh independent cutting edges are available, but the risk of injury to the operator and damages to the cutting element increases during edge shifting
Solution Approach 1:
The cutting element is pre-positioned with multiple cutting edges along the guide slot. The holder design pre-establishes safe engagement features that guide the cutting element into position without requiring the operator to manually handle exposed edges, thus providing multiple edges while maintaining safety
Solution Approach 2:
The cutting element is designed with controlled dynamic movement along the guide slot that limits exposure of sharp edges during positioning. The movement mechanism ensures the cutting element remains guided and constrained, reducing the risk of injury while enabling access to multiple edges
Data Source
AI summary
This invention relates to a hand held cutting device comprising a handle (62), a cutting head (63), a cutting element (4) attached to the cutting head (63), and a guiding and supporting element (2) extending from the cutting head (63). The guiding and supporting element (2) and cutting head (63) are arranged to form a protecting periphery (100) such that any part of a cutting edge (4A) of the cutting element (4) does not protrude outside of said periphery. The guiding and supporting element (2) includes a distal portion (2A) arranged to form a feed channel (64) together with a portion (60) of the handle (62) and a support device (1) is arranged on the guiding and supporting element (2). The support device (1) is arranged to interact with the cutting edge (4A) to improve cut ability, wherein the cutting element (4) is arranged to be none rotatably, fixedly attached to the cutting head (63) by means of a locking device (40, 41) that provides for at least three different re-positioning and thereby renewing of the cutting edge (4a).