Yarn Feeder Exit Sensor Locking With Integrated Spring Stop
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Solution Overview
Problem
Existing yarn feeding devices require manual operation of a feeler lock and additional sensor locks, making the process cumbersome and inefficient.
Innovation Solution
A yarn feeding device with a pivotable outlet sensor and a spring element designed as a stop element that forms a locking device, allowing manual movement into a locking position without the need for additional sensor locks, providing a clear visual and tactile indication of the locked position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a manually operated sensor lock is provided, then the yarn feeler lever can be locked, but the operation becomes cumbersome and requires additional manual steps
Solution Approach 1:
The patent combines the stop element and locking device into a single integrated component. The stop element serves dual functions: limiting the pivot movement of the yarn feeler lever and acting as the locking mechanism. This merging eliminates the need for separate sensor locks and manual locking operations, directly resolving the contradiction between reliable locking and ease of operation.
2Reliability
If additional sensor locks are provided, then the locking function is enhanced, but the device complexity increases
Solution Approach 1:
The invention merges multiple functions into the stop element: it limits pivot movement, provides locking capability, and eliminates the need for additional sensor locks. This single-component solution reduces device complexity while maintaining enhanced locking function, directly addressing the contradiction between functional enhancement and component reduction.
3Device complexity
If the spring element is designed to form the locking device, then the structure is simplified, but the spring element must withstand higher mechanical stress
Solution Approach 1:
The stop element is designed as a spring element that integrates both stopping and locking functions. By combining these functions into one component, the patent simplifies the overall structure while the spring element's elastic properties enable it to withstand the mechanical stress required for locking operations.
Solution Approach 2:
The spring element's material properties and geometric parameters are optimized to withstand the mechanical stress of locking operations. The spring constant, wire diameter, and coil dimensions are designed to provide sufficient locking force while maintaining structural simplicity, resolving the contradiction between simplified structure and component durability.
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
Facilitates easy manual locking of the yarn feeler lever, eliminating the need for additional sensor locks and ensuring a clear indication of the locked position, thereby simplifying the operation.
Implementation Method 1
The spring element is designed to elastically deform when the outlet sensor is moved manually into a locking position next to the operating position or next to the switching position by the locking element to such an extent that its second end slides behind the locking element
Data Source
Figure 1~2
Figure 3a~3c
Figure 4a~5c
AI summary
A yarn feeder (1) for supplying a yarn (F) to a textile machine is equipped with a support unit (2), a yarn feeder wheel (3), at least one yarn guide, and at least one yarn sensing lever designed as an exit sensor (22). The exit sensor (22) is rotatably mounted on the support unit (2) and is designed to pivot from an operating position, in which the exit sensor (22) is held by the yarn (F), to a switching position. The yarn feeder (1) comprises a spring element designed as a stop element and a locking device. The spring element is designed to form the locking device with a locking element (27) of the exit sensor (22). The locking element (27) is arranged on the exit sensor (22) in the area of its mounting. The spring element is fixed at one end to the support unit (2). During operation, i.e.,In the operating position or the switching position, the spring element is positioned with its other end in front of the locking element (27). The spring element is designed to deform elastically through the locking element (27) and slide behind the locking element (27) when the outlet sensor (22) is moved manually into a locking position, which is provided in addition to the operating position or the switching position.