Bag Production Sensor Alignment for Fabric Edge Positioning
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Solution Overview
Problem
Existing devices for producing sacks from coated plastic ribbon fabrics face challenges in maintaining quality due to variations in fabric width and edge alignment during the formation of open bottom squares, leading to issues in further processing.
Innovation Solution
A device equipped with sensors to detect the exact position of the fabric edges, which adjusts the movement sequences of rotating tools in the bottom opening station to precisely align and spread the tube ends, ensuring accurate formation of the open bottom square even with varying fabric widths and edge positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If sensors and adaptive movement sequences are added to detect and compensate for fabric edge position variations, then manufacturing precision of the open bottom square is improved, but device complexity increases
Solution Approach 1:
The sensor detects the actual fabric edge position before the bottom opening operation commences. This preliminary detection allows the control system to pre-calculate and pre-adjust the movement sequences of the rotating tools, ensuring that the spreading and aligning actions are performed at the correct positions despite fabric width variations.
Solution Approach 2:
The system employs a feedback mechanism where sensor data regarding fabric edge position is continuously monitored and fed back to the control system. This feedback loop enables real-time adjustment of the rotating tools' movement sequences, allowing the system to compensate for variations in fabric width and maintain precise alignment of the open bottom square throughout production.
2Reliability
If the movement sequences of rotating tools are dynamically adjusted based on detected fabric edge position, then quality consistency is improved, but control system complexity increases
Solution Approach 1:
The control system receives continuous feedback from sensors about fabric edge position and dynamically adjusts the movement sequences of rotating tools in response. This closed-loop control ensures that quality variations caused by fabric width fluctuations are automatically compensated for, maintaining consistent sack production quality without requiring manual intervention.
Solution Approach 2:
The system transitions from static, fixed movement sequences to dynamic, adaptive movement sequences that can change in real-time based on detected fabric conditions. The rotating tools' speed, position, and timing are made dynamic through the control system's ability to modify movement parameters on-the-fly according to sensor feedback about fabric edge position.
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 enhances the quality of sack production by compensating for fabric width fluctuations and edge misalignment, reducing machine stops and rejects, and maintaining consistent sack quality.
Implementation Method 1
A device equipped with sensors to detect the exact position of the fabric edges
Data Source
Figure 1a~1d
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AI summary
The invention relates to an apparatus for producing bags from flexible-tube pieces which comprise woven fabric made of drawn plastic strips, wherein the woven fabric is provided with a polymer coating. According to the invention, the transporting path of the flexible-tube pieces in such apparatuses has arranged in it at least one sensor, which is able to sense the precise position of the woven-fabric edges of the flexible-tube pieces. Also provided are means which influence the movement sequences in the at least one following base-opening station in accordance with the position sensed for the flexible-tube portions.