| 摘要 |
<p>The present invention relates to a double needle sewing machine (1). The double needle sewing machine (1) includes a needle bar turning base (15) supporting two needle bars (12L, 12R), a needle bar turning mechanism (30) configured to turn the two needle bars (12L, 12R), a clutch mechanism (50) configured to hold the two needle bars (12L, 12R), an operating member (16) configured release each of the two needle bars (12L, 12R) from the clutch mechanism (50) individually, an actuator (61) for switching the position of the operating member (16), a differential transmission mechanism (63) configured transmit the position switching operation from the actuator (61) and to the operating member (16). The differential transmission mechanism (63) includes an input member (631) that turns by receiving the drive force from the actuator (61), an output member (632) that turns to apply the position switching operation to the operating member (16), a transmission member (64) configured to transmit the turning motion between the input member (631) and the output member (632) such that the turning direction of the turning motion is reversed, and a turning support (65) supporting the transmission member (64) such that the transmission member (64) revolves about the center line (C). A turning motor (31) serving as a drive source of the needle bar turning mechanism (30) is provided on the sewing machine frame (101), and a rotation of the turning motor (31) is transmitted to the needle bar turning base (15) and to the turning support (65) such that the rotation ratio of the needle bar turning base (15) to the turning support (65) is 2:1.</p> |
