Tuft Carrier Loading Apparatus with Automated Error Correction
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Solution Overview
Problem
Conventional carpet looms require a large number of bobbins and manual intervention to correct tufting errors, leading to inefficiencies and increased costs due to the complexity of managing multiple yarn colors and the need for skilled labor to identify and rectify missing tufts before they are inserted into the carpet.
Innovation Solution
A tuft carrier loading apparatus with an elongate tuft carrier and selectively operable tuft feeders that automatically detect and correct absent tufts by moving back into registry with a feeder, allowing for re-actuation and reducing the need for manual intervention, and optionally using primary and secondary feeders to increase success rates in filling tuft retention sites.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional jacquard Axminster loom uses multiple bobbins for each yarn color, then the loom can produce multi-color carpets, but the number of bobbins required increases significantly (e.g., 8064 bobbins for 8 colors)
Solution Approach 1:
The invention divides the carpet production process into two distinct stages: (1) a tufting stage that creates the carpet backing with embedded tuft yarns, and (2) a weaving stage that interlaces warp and weft yarns. This segmentation allows the complex multi-color pattern to be achieved through patterned tuft insertion rather than through complex bobbin management, dramatically reducing the number of bobbins needed while maintaining multi-color capability.
Solution Approach 2:
The invention performs preliminary tuft formation and insertion into the carpet backing before the main weaving process. By pre-forming tufts with the required color patterns and inserting them into the backing during the tufting stage, the system eliminates the need to manage multiple bobbins during the weaving stage, as the color pattern is already established in the tufts.
2Reliability
If manual intervention is used to correct absent tufts, then tufting errors can be identified and rectified, but production downtime increases and skilled labor costs rise
Solution Approach 1:
The invention incorporates detectors positioned to monitor each tuft retention site and detect the presence or absence of tufts in real-time. This feedback mechanism immediately identifies tufting errors, allowing the system to trigger automated correction procedures or alert operators, thereby eliminating the need for manual inspection and reducing production downtime while maintaining high reliability.
Solution Approach 2:
The invention enables the tufting system to automatically detect and correct its own errors through the detector system and automated re-tufting mechanisms. Rather than requiring skilled operators to manually identify and correct absent tufts, the system performs self-diagnosis and self-correction, reducing both downtime and labor costs while maintaining high tufting reliability.
3Productivity
If tuft carriers are moved continuously through the loom, then production speed increases, but the ability to correct absent tufts decreases
Solution Approach 1:
The invention implements periodic stopping of the tuft carrier at specific locations where detectors monitor for absent tufts. The tuft carrier moves continuously at high speed for most of the production cycle to maintain productivity, but periodically stops at correction stations where detectors can identify and correct absent tufts. This periodic action allows the system to maintain both high production speed and high reliability by concentrating correction activities at discrete intervals rather than requiring continuous slowing.
Solution Approach 2:
The invention introduces an intermediary correction mechanism that operates between the continuous tufting process and the final product inspection. The detector system acts as an intermediary that monitors tuft presence during rapid carrier movement and triggers automated correction procedures at designated stations, allowing the system to maintain high throughput while ensuring quality through intermediate verification and correction steps.
Data Source
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AI summary
A tuft carrier loading apparatus (10) for loading individual tufts (17) into tuft retention sites (9a) spaced along an elongate tuft carrier (9). The apparatus (10) includes a guide for guiding longitudinal movement of the tuft carrier along a path of travel and a plurality of individually and selectively operable tuft feeders (50) spaced along the path of travel, each tuft feeder (50) being operable when selected to feed an individual tuft to a tuft retention site (9a) of the tuft carrier (9). A driver (70) is drivingly connected to the tuft carrier (9) for moving the tuft carrier (9) along the path of travel, the driver (70) being operable to intermittently move the tuft carrier (9) through a series of successive positions whereat predefined tuft retention sites (9a) are moved temporarily into registry with each tuft feeder (50). A controller (60) is provided for controlling selection of the tuft feeders (50), the controller (60) being operable to actuate selected tuft feeders (50) to feed tufts to those tuft retention sites (9a) in registry therewith whilst the carrier (9) is located at each successive position. A detector is associated with each tuft retention site (9a) to detect the presence of a tuft. The driver (70), on detection of an absent tuft in a tuft retention site (9a) following actuation of one or more selected tuft feeders (50) resulting in failure to feed a tuft to the absent tuft retention site (9a), is operable to move the tuft carrier (9) into a position whereat the absent tuft retention site (9a) is moved temporarily back into registry with the or one selected tuft feeder (50) and the controller (60) re-actuates the selected tuft feeder (50) to feed a tuft to the absent tuft retention site (9a).