Automated Fabric Hobble and Ring Attachment Apparatus
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Solution Overview
Problem
The industry lacks automated solutions for fabricating coverings for architectural openings that incorporate hems, tunnels, and ring attachments, which are typically done manually and inefficiently using sewing machines.
Innovation Solution
A vertically oriented and adjustable lift rack system with tandem sewing machines and a vacuum chamber to automate the process of forming hobbles, tunnels, and attaching rings to fabric, allowing for simultaneous operation of stitching and ring attachment across the fabric width.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual operation of sewing machines is used, then flexibility in handling fabric is maintained, but productivity is low and the process is inefficient
Solution Approach 1:
The patent combines multiple sewing machines (first and second sewing machines) into a single integrated apparatus that processes both layers of fabric simultaneously. The apparatus merges fabric handling, stitching, hobble formation, and ring attachment operations into one automated system, thereby improving productivity while managing complexity through functional integration.
Solution Approach 2:
The apparatus is designed as a multi-functional automated system that can perform multiple operations: the first sewing machine stitches the first layer, the second sewing machine stitches the second layer, the vacuum chamber forms hobbles, and rings are attached automatically. This universal apparatus handles various fabric processing tasks that were previously separate manual operations, significantly boosting productivity.
2Productivity
If automated sewing machines are used, then productivity increases, but the ability to handle different fabric configurations manually is reduced
Solution Approach 1:
The apparatus incorporates dynamic elements including a vertically movable lift rack that can adjust fabric position, a retractable tucker blade that adapts to fabric thickness, and a vacuum chamber that can be activated or deactivated based on the required operation. These dynamic components enable the automated system to adapt to different fabric configurations while maintaining high productivity.
Solution Approach 2:
The system changes operational parameters dynamically - the vacuum chamber activates only when hobble formation is needed, the tucker blade extends only when fabric thickness requires it, and the lift rack adjusts vertical position based on fabric layer configuration. This parameter flexibility allows the automated apparatus to handle various fabric types and configurations effectively.
3Loss of time
If multiple operations are performed sequentially, then process simplicity is maintained, but total processing time increases
Solution Approach 1:
The apparatus performs multiple operations simultaneously and continuously - while the first sewing machine stitches the first layer and the second sewing machine stitches the second layer, the vacuum chamber forms hobbles and rings are attached all in one continuous pass. This eliminates sequential processing steps and reduces total fabrication time by maintaining continuous useful action throughout the entire fabric width.
Solution Approach 2:
The apparatus segments the fabric processing into parallel independent operations: the first sewing machine handles the first layer, the second sewing machine handles the second layer, the vacuum chamber handles hobble formation, and the ring attachment mechanism handles ring sewing. These segmented operations proceed simultaneously across different portions of the fabric, reducing total processing time while managing complexity through modular parallel processing.
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
Enables efficient and automated fabrication of fabrics with hobbles, tunnels, and guide rings, improving productivity and enabling the creation of integrated control systems for architectural coverings.
Implementation Method 1
A vacuum chamber is also utilized in one embodiment to gather a horizontal segment of one layer of the fabric to form a hobble
Implementation Method 2
the fabric can be elevated or dropped a predetermined amount, depending on the embodiment
Implementation Method 3
a tucker blade is utilized to advance a horizontal section of the fabric into a position for engagement by the sewing machines
Implementation Method 4
clamps are utilized to control the fabric during operations thereon
Implementation Method 5
a hard clamp position where the fabric can be positively gripped during a sewing operation
Data Source
AI summary
An apparatus for forming fabrics for use, by way of example, in coverings for architectural openings includes a system for handling single or multi-layered fabrics by suspending the fabric from a lift tower, threading the fabric through various clamp systems within a housing for the apparatus, and subsequently forming horizontal rows of hobbles, tunnels, and/or attached rings by gripping and releasing the fabric with a vacuum clamp, upper and lower clamps, and a tucker blade clamp while a reciprocating tucker blade forms horizontal tucks in the fabric. Hobbles can also be formed in one layer of the fabric through use of the vacuum clamp which gathers a portion of one layer of the fabric while the other layer is handled differently. In doing so, hobbles are formed between tucks in the fabric with the hobbles establishing a fabric resembling a Roman shade.