| 摘要 |
PROBLEM TO BE SOLVED: To provide a sewing machine in which, even when changing an oscillation range of a feed dog, a cloth is not likely to enter an opening of a needle plate in which the feed dog appears/disappears, and a control method of the sewing machine.SOLUTION: A CPU of a sewing machine changes an oscillation range of a feed dog 34 by switching a drive mode of a cloth feeding motor 23 between a first drive mode and a second drive mode. In the first drive mode, a drive shaft 36 of the cloth feeding motor 23 reciprocates with a specified rotation position being an intermediate position. When the drive shaft 36 is at the specified rotation position, a connection part between a first arm part 41 and a second arm part 42, a connection part of the second arm part 42 and an intermediate action arm 38, and the center position of the drive shaft 36 are on the same straight line, and the feed dog 34 is at a movable range front end. In the second drive mode, the drive shaft 36 reciprocates further on the counter clockwise side in the left side surface view than the specified rotation position. The oscillation range of the feed dog 34 in the second drive mode is further backward than the movable range front end of the feed dog 34. The gap between the feed dog 34 and a feed dog hole 26 does not easily become large, and a cloth is not likely to enter the feed dog hole 26.SELECTED DRAWING: Figure 2 |
