Ring Spinner Thread Guide Rod Cam Mechanism
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Solution Overview
Problem
Existing ring spinning machines require separate operating devices and control systems for pivoting thread guide support rods, which complicates the process of folding and positioning thread guides, especially during bobbin changes.
Innovation Solution
A mechanism using lifting rods, tension members, and driven winding drums to vertically move and pivot the thread guide rod, with a cam system and spring-loaded components to automate the folding and positioning of thread guides, eliminating the need for separate actuators and control devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If separate operating devices and control systems are used for pivoting thread guide support rods, then the thread guides can be folded and positioned, but the device complexity and control system requirements increase
Solution Approach 1:
The patent combines the pivoting function of the thread guide support rod with the existing lifting mechanism. The lifting rod that originally only moved the support rod vertically now also performs the pivoting motion through a cam profile, merging two functions into one mechanism and eliminating the need for separate operating devices.
Solution Approach 2:
The lifting rod is transformed into a multi-functional component that performs both vertical lifting and pivoting operations. By incorporating a cam profile on the lifting rod, it can sequentially execute different motions (vertical displacement followed by pivoting) using a single actuator, thereby reducing overall system complexity.
2Productivity
If automatic devices with separate control systems are used for pivoting, then the operational efficiency improves, but the control system complexity increases
Solution Approach 1:
The control functions for both vertical lifting and pivoting operations are merged into a single control system that actuates the lifting rod. The cam profile on the lifting rod automatically sequences the motions, eliminating the need for separate control devices while maintaining automated operation for improved productivity.
3Device complexity
If the thread guide support rod is pivoted by hand, then the device complexity is reduced, but the productivity and operational efficiency decrease
Solution Approach 1:
The lifting rod with its cam profile performs the pivoting action automatically as part of its lifting cycle. The mechanism serves itself by converting the vertical lifting motion into pivoting motion through the cam profile, eliminating manual intervention while maintaining mechanical simplicity and improving productivity.
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
Automates the folding and positioning of thread guides, simplifying the process of removing full cops and attaching empty tubes, enhancing operational efficiency and reducing manual intervention.
Implementation Method 1
two winding drums (16, 17) which are seated on a common shaft and can be driven by an electric motor (19) via a gear (18)
Implementation Method 2
A cam roller (20) is fastened to the side of the larger winding drum (16) and can act on a pivoting lever (21)
Implementation Method 3
spring-loaded components to automate the folding and positioning of thread guides
Data Source
Figure 1~2
AI summary
According to the invention, a cam roller (20) is provided on a winding drum (16) for the flexible traction members (14, 12) moving the thread guide rod (8) of a ring spinner in order to automate swinging up after lowering the thread guide rod (8) into the swinging-up position. Said cam roller (20) presses onto a swiveling lever (21) when being turned further back, the swiveling lever (21) rotating a swiveling shaft (23) via a connecting rod (22). A crank arm (26) located on the thread guide rod (8) engages into an arm (25) of a sliding guide by means of a crank pin (27) when the thread guide rod (8) is lowered altogether, said arm (25) of the sliding guide being disposed on the swiveling shaft. The swiveling shaft (23) is turned in the direction in which the same swivels the arm of the sliding guide in a direction in which the thread guide rod is rotated in order to swing up the thread guides (7).