Yarn Winding Device Concave Roller for Easy Thread Passage
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing yarn winding devices require complex operations to pass the yarn end between the yarn accumulating roller and the ring member, making the initial winding process cumbersome due to the need to expand the ring member to create space for yarn passage.
Innovation Solution
A yarn winding device with a concave portion on the yarn accumulating roller's outer surface, allowing easy passage of the yarn end through the ring member, and a retractable member that can sink into the concave portion to maintain tension, along with an air-threader system to automate the process, simplifies the operation of starting yarn winding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a ring member is provided around the yarn accumulating roller to apply resistance and tension to the yarn, then stable unwinding of the yarn is achieved, but the operation to pass the yarn end between the roller and ring member becomes complex and difficult
Solution Approach 1:
The yarn accumulating roller surface is segmented into a first area (with the ring member) and a second area (concave portion) to allow different functions in different zones, enabling both stable unwinding and easy yarn end passage
Solution Approach 2:
The concave portion acts as an intermediary space between the yarn supplying section and the ring member, providing a dedicated passage route for the yarn end without interfering with the ring member's tensioning function
2Ease of operation
If the ring member is expanded to create space for yarn passage, then the yarn can be passed through, but the operation becomes more difficult and time-consuming
Solution Approach 1:
The concave portion is pre-formed on the yarn accumulating roller surface, eliminating the need for preliminary expansion of the ring member or other preparatory operations to create passage space
Solution Approach 2:
Instead of creating passage by expanding the ring member radially outward, the invention creates passage by utilizing the axial dimension through the concave portion, changing the dimension in which the passage space is created
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 significantly simplifies the operation of starting yarn winding by allowing easy yarn passage and maintaining uniform tension, automating the process to reduce operator effort and improve efficiency.
Implementation Method 1
a threader that blows air inside the concave portion from the winding section side to the yarn supplying section side
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A yarn winding device (2) includes a winding section (8) that forms a package (30) by winding a yarn accumulated in a yarn accumulating section (18). The yarn accumulating section (18) includes a yarn accumulating roller (32) on an outer peripheral surface (32a) of which the yarn is wound and accumulated, and a ring member (46) that applies resistance to the yarn when the yarn wound on the yarn accumulating roller (32) is pulled by the winding section (8) to wind into the package (30). A concave portion (38) is formed in the outer peripheral surface (32a) in an area straddling a mounting position of the ring member (46) in a direction parallel to a rotation axis (R) of the yarn accumulating roller (32). The yarn is passed through the concave portion (38) below the ring member (46).