Yarn Threading Robot Cushion Member for Excessive Force
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Solution Overview
Problem
Automatic yarn threading devices face challenges in efficiently threading yarns onto fulcrum guides without applying excessive force to the yarn threading assisting member, which can lead to device damage and requires complex control, and also necessitate lengthy teaching processes to store operation information for robotic arms.
Innovation Solution
Incorporating a cushion member with an elastic component, such as a torsion spring, to absorb repellent forces and bias the yarn threading assisting member towards the guide surface, allowing for contact without rigorous control and simplifying the teaching process by determining the moving path in advance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the yarn threading assisting member is made contact with the assisting member guide unit, then the yarn threading is facilitated along a predetermined track, but excessive repellent force is applied to the yarn threading assisting member which may damage the device
Solution Approach 1:
A cushion member is provided between the yarn threading assisting member and the robotic arm to absorb excessive repellent force before it reaches the robotic arm. The cushion member includes a resilient component that compresses under excessive force, preventing damage to the robotic arm while allowing normal guiding function.
Solution Approach 2:
The cushion member acts as an intermediary element between the yarn threading assisting member and the robotic arm. It mediates the force transmission, allowing contact guidance while filtering out harmful excessive forces through its shock-absorbing properties.
2Reliability
If rigorous control is implemented to prevent excessive force application, then device damage is prevented, but the control complexity and cost increase significantly
Solution Approach 1:
The cushion member provides passive protection without requiring active control. The resilient component automatically compresses and absorbs excessive force through its mechanical properties, eliminating the need for complex sensors, controllers, or monitoring systems.
Solution Approach 2:
The cushion member converts the harmful excessive repellent force into beneficial elastic deformation. The resilient component absorbs the harmful force through compression, transforming potentially damaging energy into harmless elastic strain energy.
3Device complexity
If the yarn threading assisting member is moved without using the assisting member guide unit, then complex control is avoided, but the yarn threading cannot be performed along a desired track
Solution Approach 1:
The assisting member guide unit serves as a passive intermediary that defines the desired track without requiring active control. The guide unit's geometry inherently constrains the yarn threading assisting member to follow the correct path, combining simplicity with precision.
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
This solution prevents excessive force application during yarn threading, reduces the complexity of control requirements, and significantly shortens the teaching time by ensuring consistent contact with the guide surface, enabling reliable yarn threading and efficient operation.
Implementation Method 1
a cushion member which absorbs repellent force applied from the guide surface to the yarn threading assisting member
Implementation Method 2
Incorporating a cushion member with an elastic component, such as a torsion spring, to absorb repellent forces and bias the yarn threading assisting member towards the guide surface
Data Source
Figure 1
Figure 2
Figure 3(a)~3(b)
AI summary
When a yarn threading assisting member of an automatic yarn threading device is in contact with an assisting member guide unit, application of excessive force to the yarn threading assisting member is suppressed without needing complicated control. A spun yarn take-up machine includes a winding device 14 which includes a bobbin holder supporting bobbins and fulcrum guides 21 and performs yarn winding of winding yarns Y onto the bobbins. The spun yarn take-up machine further includes a yarn threading robot 4 which includes a yarn threading assisting member 47 which temporarily holds the yarns Y and a driving mechanism which moves and drives the yarn threading assisting member 47. The yarn threading robot 4 performs yarn threading such that the yarns Y are threaded to the fulcrum guides 21 as the driving mechanism drives the yarn threading assisting member 47. The winding device 14 includes an assisting member guide unit 29 on which a guide surface 29a is formed to guide the yarn threading assisting member 47 in a guide direction having a component in the bobbin axial direction. Furthermore, the yarn threading robot 4 includes a cushion member 60 which absorbs force applied from the guide surface 29a to the yarn threading assisting member 47.