Sewing – Elements – Frames
Patent
1986-03-13
1987-07-21
Nerbun, Peter
Sewing
Elements
Frames
11212112, 112315, D05B 2100, D05B 2722
Patent
active
046810480
ABSTRACT:
Sewing machine with a control for the movement of a workholder. For the formation of edge parallel seams when sewing on labels with seam sections extending parallel to the movement axes of a cross slide system carrying the work holder, there are arranged at uniform distance from the stitch hole four transmitted light sensors, of which always only the one which can recognize the crosswise extending following edge of a seam section is switchable into readiness for operation. After a signal has been given by a sensor, the respective drive motor of the cross slide system is controlled by means of a microcomputer in such a way that the respective seam section ends exactly in the intended corner. Because of the work related feed control, a sewing program is not needed. Besides, the control automatically adapts itself to different label dimensions.
REFERENCES:
patent: 3385245 (1968-05-01), Ramsey et al.
patent: 4069778 (1978-01-01), Kozawa
patent: 4495877 (1985-01-01), Willenbacher
patent: 4498404 (1985-02-01), Sadeh
patent: 4513677 (1985-04-01), Scholl
patent: 4526114 (1985-07-01), Martell et al.
patent: 4583476 (1986-04-01), Fischer
patent: 4610210 (1986-09-01), Kinoshita et al.
Nerbun Peter
Pfaff Industriemaschinen GmbH
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