Independent single end servo motor driven scroll-type pattern attachment for tufting machine
First Claim
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1. In a multiple needle tufting machine adapted to feed a backing fabric longitudinally from front to rear through the machine having a plurality of spaced needles aligned transversely of the machine for reciprocable movement through the backing fabric by operation of a rotary main drive shift, a yarn feed mechanism comprising:
- (a) a support having a mounting surface;
(b) at least three independent yarn drives removably attached to said mounting surface along a substantially arcuate path, said yarn drives having a servo motor in direct communication with a yarn feed roll;
(c) a servo motor controller for processing ratiometric information, electronically connected to a servo motor of a single end yarn drive;
(d) a master controller which receives rotational position information for the main drive shaft and sends corresponding ratiometric pattern information by electrical connection to the servo motor controller.
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Abstract
The present invention provides a single end scroll-type yarn feed attachment for tufting machines characterized by independent servo-motor control of yarn feed rolls while eliminating tube banks typical of tufting machine feed attachments and produces new tufted carpet designs.
110 Citations
11 Claims
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1. In a multiple needle tufting machine adapted to feed a backing fabric longitudinally from front to rear through the machine having a plurality of spaced needles aligned transversely of the machine for reciprocable movement through the backing fabric by operation of a rotary main drive shift, a yarn feed mechanism comprising:
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(a) a support having a mounting surface;
(b) at least three independent yarn drives removably attached to said mounting surface along a substantially arcuate path, said yarn drives having a servo motor in direct communication with a yarn feed roll;
(c) a servo motor controller for processing ratiometric information, electronically connected to a servo motor of a single end yarn drive;
(d) a master controller which receives rotational position information for the main drive shaft and sends corresponding ratiometric pattern information by electrical connection to the servo motor controller. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification