Yarn cutting-sucking device
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing yarn cutting-sucking devices face issues with reliably cutting and sucking yarns due to the cutter pushing yarns away from the blade, leading to incomplete cutting and reduced efficiency.
Innovation Solution
A yarn cutting-sucking device is designed with a cutter, a sucking section, a first guide, and a second guide, where the guides regulate yarn movement to prevent pushing away from the blade, and the blade part is inclined to enhance cutting efficiency, with a single blade for cost reduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the cutter moves in the arrangement direction of yarns to cut all yarns, then the productivity is improved, but the cutter pushes the yarns away from the blade part causing unreliable cutting
Solution Approach 1:
A guide structure is introduced as an intermediary element between the cutter and yarns. The guide includes a guide surface that directs yarns toward the blade part, and a regulatory surface that prevents yarns from being pushed away during cutting, thereby ensuring reliable cutting while maintaining high productivity
Solution Approach 2:
The guide structure is divided into two functional surfaces: a guide surface for directing yarns to the blade, and a regulatory surface for controlling yarn movement during cutting. This segmentation allows each surface to perform its specific function optimally, resolving the contradiction between cutting speed and reliability
2Device complexity
If a single blade is used for cutting, then the device complexity and manufacturing cost are reduced, but the burden on the blade increases
Solution Approach 1:
The guide surface performs preliminary action by directing yarns to the optimal position on the blade part before cutting occurs. This preliminary guidance distributes the cutting burden across different portions of the blade, reducing stress concentration and extending blade life while maintaining a simple single-blade 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 device reliably cuts and sucks yarns by guiding them effectively to the blade, reducing the burden on the blade and ensuring complete cutting while being cost-effective with a single blade configuration.
Implementation Method 1
a sucking unit which is provided to be close to the cutter, is movable in the arrangement direction in the same manner as the cutter, and is configured to suck the yarns cut by the cutter
Data Source
Figure 1
Figure 2
Figure 3
AI summary
An object of the present invention is to further reliably cut and suck yarns which run while being aligned in an arrangement direction. An yarn cutting-sucking device 40 includes: a cutter 42 which includes a blade part 42a for cutting the yarns Y and which is movable from the left side toward the right side in a left-right direction; a cylindrical member 51 which is movable together with the cutter 42 and which is configured to suck the yarns Y cut by the cutter 42; a first guide 44 which is provided upstream of the cutter 42 in a yarn running direction, which moves together with the cutter 42, and which guides the yarns Y to the blade part 42a; and a second guide 45 which is provided downstream of the cutter 42 in the yarn running direction, which moves together with the cutter 42, and which guides the yarns Y to the blade part 42a. The first guide 44 includes a first regulatory portion which regulates movement of each yarn Y in a direction in which each yarn Y is pushed as a result of contact with the blade part 42a, and the second guide 45 includes a second regulatory portion which regulates the movement of each yarn Y in the direction in which each yarn Y is pushed by the contact with the blade part 42a.