A sewing machine includes a needle bar to which a sewing needle is attached, a needle bar up-and-down motion mechanism moving the needle bar up and down and a cutting unit including a cutting needle having a distal end formed with a blade and a cutting needle up-and-down motion mechanism which is independent of the needle bar up-and-down motion mechanism and moves the cutting needle up and down. The cutting unit is located on a sewing machine bed with the blade being directed upward.

A sewing machine includes a needle bar to which a sewing needle is attached, a needle bar up-and-down motion mechanism moving the needle bar up and down and a cutting unit including a cutting needle having a distal end formed with a blade and a cutting needle up-and-down motion mechanism which is independent of the needle bar up-and-down motion mechanism and moves the cutting needle up and down. The cutting unit is located on a sewing machine bed with the blade being directed upward.

In a sewing machine, a plurality of needle plate holes are formed in a needle plate. The needle plate holes are arranged at positions respectively corresponding to a plurality of blade-side rotation positions of a cutwork blade. In this manner, the needle plate hole is formed in a shape corresponding to a shape of a blade portion, and a direction of the needle plate hole can match a direction of the blade portion that is arranged above to face the needle plate hole. Specifically, a linear hole-side cutting surface corresponding to a blade-side cutting surface of the blade portion is formed in the needle plate hole, and the blade-side cutting surface and the hole-side cutting surface can be arranged to face each other in a direction orthogonal to both the surfaces in a plan view.

In a sewing machine, a plurality of needle plate holes are formed in a needle plate. The needle plate holes are arranged at positions respectively corresponding to a plurality of blade-side rotation positions of a cutwork blade. In this manner, the needle plate hole is formed in a shape corresponding to a shape of a blade portion, and a direction of the needle plate hole can match a direction of the blade portion that is arranged above to face the needle plate hole. Specifically, a linear hole-side cutting surface corresponding to a blade-side cutting surface of the blade portion is formed in the needle plate hole, and the blade-side cutting surface and the hole-side cutting surface can be arranged to face each other in a direction orthogonal to both the surfaces in a plan view.

In a sewing machine, a plurality of needle plate holes are formed in a needle plate. The needle plate holes are arranged at positions respectively corresponding to a plurality of blade-side rotation positions of a cutwork blade. In this manner, the needle plate hole is formed in a shape corresponding to a shape of a blade portion, and a direction of the needle plate hole can match a direction of the blade portion that is arranged above to face the needle plate hole. Specifically, a linear hole-side cutting surface corresponding to a blade-side cutting surface of the blade portion is formed in the needle plate hole, and the blade-side cutting surface and the hole-side cutting surface can be arranged to face each other in a direction orthogonal to both the surfaces in a plan view.

In a sewing machine, a plurality of needle plate holes are formed in a needle plate. The needle plate holes are arranged at positions respectively corresponding to a plurality of blade-side rotation positions of a cutwork blade. In this manner, the needle plate hole is formed in a shape corresponding to a shape of a blade portion, and a direction of the needle plate hole can match a direction of the blade portion that is arranged above to face the needle plate hole. Specifically, a linear hole-side cutting surface corresponding to a blade-side cutting surface of the blade portion is formed in the needle plate hole, and the blade-side cutting surface and the hole-side cutting surface can be arranged to face each other in a direction orthogonal to both the surfaces in a plan view.

A positioning device for rotating a movable tongue seat is essentially provided with a pin and a pin hole between a movable tongue seat and a cutter seat for driving the movable tongue seat. Rotating the positioning member can drive the movable tongue seat to move to a corresponding position, so that the movable tongue on the movable tongue seat can be extended and retracted from the top of the seat in an optimal position, and can be reliably controlled.

A positioning device for rotating a movable tongue seat is essentially provided with a pin and a pin hole between a movable tongue seat and a cutter seat for driving the movable tongue seat. Rotating the positioning member can drive the movable tongue seat to move to a corresponding position, so that the movable tongue on the movable tongue seat can be extended and retracted from the top of the seat in an optimal position, and can be reliably controlled.

A positioning device for rotating a movable tongue seat is essentially provided with a pin and a pin hole between a movable tongue seat and a cutter seat for driving the movable tongue seat. Rotating the positioning member can drive the movable tongue seat to move to a corresponding position, so that the movable tongue on the movable tongue seat can be extended and retracted from the top of the seat in an optimal position, and can be reliably controlled.

A positioning device for rotating a movable tongue seat is essentially provided with a pin and a pin hole between a movable tongue seat and a cutter seat for driving the movable tongue seat. Rotating the positioning member can drive the movable tongue seat to move to a corresponding position, so that the movable tongue on the movable tongue seat can be extended and retracted from the top of the seat in an optimal position, and can be reliably controlled.