Peg Tray Identification in Ring Spinning Transport
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing ring spinning machines face challenges in identifying faulty spinning stations and peg tray losses, leading to the production of inferior bobbins without immediate detection, and existing solutions are costly and prone to errors.
Innovation Solution
A device with a writing and reading station in the tube and spinning cop transport system that ensures continuous identification of peg trays, correcting any gaps in the system to accurately assign spinning stations, using writable and erasable memory chips on peg trays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If peg trays are not continuously identified in the transport system, then the system is simpler to operate, but peg tray losses go undetected leading to faulty bobbin production
Solution Approach 1:
The writing device writes identification marks on peg trays in advance before they enter the spinning section. This preliminary identification enables subsequent detection of peg tray losses without requiring complex real-time monitoring throughout the entire transport system.
Solution Approach 2:
Instead of tracking each peg tray continuously through complex monitoring, the system uses simple identification marks (copies of information) written on the peg trays. The reading device at the doffing position checks these marks to detect losses, simplifying the overall system while maintaining reliability.
2Measurement precision
If measuring, counting and sorting devices are used to identify faulty spinning stations, then identification accuracy improves, but device cost and space requirements increase significantly
Solution Approach 1:
The system writes identification marks on peg trays in advance at the doffing position. This preliminary marking enables accurate tracing of spinning cops to their source spinning stations without requiring complex measuring and sorting devices during the spinning process itself.
Solution Approach 2:
The patent replaces complex mechanical measuring, counting and sorting devices with a simpler optical/electronic identification system using readable marks on peg trays. This substitution maintains identification accuracy while dramatically reducing device complexity and space requirements.
3Reliability
If thread cleaners are used to monitor thread quality, then thread defect detection improves, but the ability to identify the source spinning station is lost
Solution Approach 1:
The system separates the functions of thread quality monitoring (performed by thread cleaners at the winder) from spinning station identification (performed by reading identification marks on peg trays). This segmentation allows both functions to operate independently and effectively without interfering with each other.
Solution Approach 2:
The identification mark on the peg tray serves as an intermediary that carries spinning station information through the entire transport system. This intermediary enables the connection between thread quality issues and their source spinning stations without requiring direct communication between monitoring systems.
4Reliability
If the entire take-off is rejected when a peg tray is missing, then quality control is maintained, but productivity decreases due to loss of potentially good bobbins
Solution Approach 1:
The reading device provides feedback about the presence and identification of each peg tray at the doffing position. This feedback enables selective rejection of only those bobbins from missing or incorrectly identified peg trays, rather than rejecting entire take-offs, thus maintaining quality control while preserving productivity.
Solution Approach 2:
Instead of discarding (rejecting) entire take-offs when a single peg tray is missing, the system recovers potentially good bobbins by identifying and separating only the affected ones through reading the identification marks. This selective approach maintains quality control while minimizing productivity loss.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The invention relates to a device for operating a machine combination consisting of a ring spinning machine and a cross-winding machine, wherein a first part of a core and spindle transport system is arranged in the area of the ring spinning machine and a second part of the core and spindle transport system is arranged in the area of the cross-winding machine, and a device is provided that monitors the completeness of the peg trays carrying fresh spindles or empty cores circulating in the core and spindle transport system. To prevent a take-up from a ring spinning machine from being rejected during the next counter check due to a missing peg tray, the invention provides that a writing device is located in an area between the second part and the first part of the core and spindle transport system, which is used for the continuous marking of the peg trays entering the first part from the second part of the core and spindle transport system.The system ensures that the peg trays are loaded with empty cores and that a read/write station is installed in the area between the first and second parts of the core and spindle transport system. This station records the markings of the peg trays exiting the first part of the core and spindle transport system, which are loaded with fresh spindles. If, due to non-sequential marking of the peg trays, it detects the absence of at least one peg tray, it immediately initiates a correction of the current spinning station number of the ring spinning machine.