Fly and Fastener Sewing Line for Stable Edge Processing
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Solution Overview
Problem
Existing sewing devices require manual skill and result in unstable product quality and limited production due to the need for manual integration of flies and fasteners, with inadequate pressing of sewn workpieces during edge processing.
Innovation Solution
A sewing device that automates the integration of flies and fasteners using a fly base, conveying devices, sewing machines, and a tape guide to stabilize the positioning and sewing process, including a sewing thread cutting mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual work is used for integrating flies and fasteners, then flexibility in operation is maintained, but product quality becomes unstable and productivity is limited
Solution Approach 1:
The sewing device enables self-service automation where the system automatically feeds, positions, sews, and cuts the fly and fastener without manual intervention. The automated feeding mechanism supplies workpieces to the sewing position, the sewing machine automatically stitches the components together, and the cutting mechanism trims excess material, creating a fully autonomous production system that eliminates manual labor while ensuring consistent product quality
Solution Approach 2:
The patent replaces manual mechanical operations with automated mechanical systems. The manual feeding and positioning actions are substituted by automated feeding mechanisms and positioning devices. The manual sewing operation is replaced by an automated sewing machine controlled by a control unit. This substitution of manual mechanical systems with automated mechanical systems achieves both high productivity and stable product quality
2Manufacturing precision
If sewn workpieces are pressed during edge processing, then processing quality is stabilized, but the pressing position must be precisely controlled
Solution Approach 1:
The pressing plate performs preliminary pressing of the fly and fastener before the edge processing begins. By pre-positioning and pre-pressing the workpieces at the correct location, the system ensures that the subsequent edge processing operates on properly positioned material. This preliminary action eliminates the need for complex real-time positioning control during the actual edge processing, simplifying the overall control system while maintaining high manufacturing precision
Solution Approach 2:
The pressing plate acts as an intermediary device between the workpiece supply mechanism and the edge processing mechanism. It provides a stable, controlled pressing interface that ensures proper positioning of the fly and fastener before they undergo edge processing. This intermediary pressing action mediates the transition from workpiece supply to precise edge processing, ensuring quality without requiring complex control systems
3Adaptability or versatility
If multiple components are sewn together, then product integration is achieved, but the sewing process becomes more complex
Solution Approach 1:
The patent merges multiple functions into a single integrated sewing device. The feeding mechanism, positioning system, sewing machine, and cutting mechanism are combined into one cohesive automated system. This merging of functions allows the device to handle the entire integration process of fly and fastener in a single operation, achieving high adaptability for different product configurations without increasing operational complexity, as the integrated system performs all tasks automatically
Data Source
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AI summary
The purpose of a sewing device is to reduce, as much as possible, manual work performed by a sewing worker during integration processing of a fly and a fastener by means of sewing and fabric edge processing of the fly. Provided is a sewing device including: a fly stand 18 on which a fly 1 is placed; a fastener stand 15 on which a fastener 2 is placed; a first conveying device 68 that conveys the fly on the fly stand; a first sewing machine 69 that oversews an edge of the fly that is being conveyed by the first conveying device; a supplying and conveying device 120 that supplies the fastener from the fastener stand so as to be placed on the fly, the edge of which has been oversewed, in an overlapping manner and that conveys the fly and the fastener together; and a second sewing machine 124 that sews the fly and the fastener being conveyed by the supplying and conveying device together. Manual work performed by a sewing worker is reduced, it becomes easy to hold the fly when processing the edge of the fly, because the fly is supplied as a single object, and the stable quality is achieved in the fly edge processing.