A feed mechanism that advances fabric comprises at least one dog that mechanically advances the fabric toward a sewing head and at least one actuator that is coupled to and actuates the at least one dog in a servo controlled motion so that the sewing head sews the fabric at a desirable position.

The invention relates to an automated sewing system comprising I) a sewing head or ultrasonic welding head configured a) for connecting two or more layers of fabrics, or b) for making a pattern on one or more layers of fabric; and II) a conveyor belt unit comprising i) a conveyor belt adapted for supporting one or more layers of fabric, and ii) a motor unit adapted for moving said conveyor belt; wherein said conveyor belt further comprises c) a mechanism adapted for forming a cavity in said conveyor belt, said cavity being formed below said sewing head.

The invention relates to an automated sewing system comprising I) a sewing head or ultrasonic welding head configured a) for connecting two or more layers of fabrics, or b) for making a pattern on one or more layers of fabric; and II) a conveyor belt unit comprising i) a conveyor belt adapted for supporting one or more layers of fabric, and ii) a motor unit adapted for moving said conveyor belt; wherein said conveyor belt further comprises c) a mechanism adapted for forming a cavity in said conveyor belt, said cavity being formed below said sewing head.