Method and device for punching a planar object using a sewing machine

A method for punching a planar object with a sewing machine, the planar object (23) being displaceable between a sewing machine head (1) and a needle plate (7) perpendicular in reference to an axis N of a needle bar, the device comprising a punching tool with a punching matrix (5b) and a punching die (5a) adjusted to the punching matrix (5b) in shape and size that is connectable to the sewing machine, with at least one of the punching die (5a) or the punching matrix (5b) being moveable relatively between a base position and an end position, with in the base position a clear space being formed between the punching die (5a) and the punching matrix (5b) in which the planar object (23) is displaceable and positioned for a punching process, so that during motion from the base position into the end position clippings can be punched out of the planar object (23), and the punching tool comprises a clippings container (9) for accepting the punched-out clippings, the method comprising:

• fastening the clippings container (9) via a fastening element to the needle plate (7), stretching the planar object on a tambour frame and connecting the tambour frame to a tambour frame drive, which is connected to the sewing machine such that the planar object is arranged in a punching plane L2, arranged parallel in reference to the sewing plane L1, above the needle plate, and moving the tambour frame such that it successively approaches processing positions, and at the processing positions, punching out parts of the planar object with the punching tool, and the punched out parts are received by the clippings container (9).