Patent ID: 7966956
Filing Date: 2011-06-28
Classification: D05B,D05C

Abstract:
1. A multi-head embroidery sewing machine including a plurality of machine heads each provided with a plurality of sewing mechanical components that include a needle bar driving mechanism, thread take-up lever and presser foot mechanism, said embroidery sewing machine comprising: individual motors provided per machine head for individually driving respective ones of the mechanical components including the needle bar driving mechanism, thread take-up lever and presser foot mechanism; a common motor provided for driving a plurality of rotary hooks that are disposed beneath the respective machine heads; and a transmission mechanism for transmitting rotation of said common motor to the rotary hook of each of the machine heads, wherein each of the machine heads has a needle bar case that is slidably mounted thereon and that has a plurality of needle bars, and which further comprises a needle bar case moving mechanism provided per machine head, each of said needle bar case driving mechanisms selectively positioning any one of the needle bars of the machine head, corresponding thereto, in a position where the one needle bar is drivable by said needle bar driving mechanism.