JPS6213478U - - Google Patents

Description

[Brief explanation of drawings]

Fig. 1 is a partially enlarged side sectional view of a sewing machine embodying this invention, Fig. 2 is a front view of the sewing machine, Fig. 3 is a partially enlarged front view of the operation panel, and Fig. 4 is a perspective view showing the feed mechanism. FIG. 5 is a partial side sectional view, and FIG. 6 is an electric block circuit diagram. In the figure, 1a is an arm part, 42 is a potentiometer as a second detection means, 45 is a light emitting element, 48 is a light receiving element, 49 is a linear potentiometer as a first detection means, and 57 is a setting means. , 63 is a CPU that constitutes calculation means and control means, and 72 is an RA as storage means.
It is M.

Claims (1)

[Claims for Utility Model Registration] In a sewing machine equipped with a cloth edge detection unit WD that detects the edge of the workpiece cloth W on the cloth feeding side from the needle drop position, the cloth edge detector WD is connected to an arm part 1a of the sewing machine.
a light emitting element 45 fixedly disposed in the sewing machine, and a light receiving element 48 movably disposed in the bed portion 1b of the sewing machine along the cloth feeding direction; a detection means 49; a calculation means 63 for calculating the distance between the needle drop position and the cloth edge detection position based on the output signal from the first detection means 49; a setting means 57 for setting the distance to the work cloth W; a second detection means 42 for detecting the feed pitch of the work cloth W; a storage means 72 for storing each of the distance data and the feed pitch data; Calculating the number of stitches after the edge detection is based on each data stored in the storage means 72,
A sewing machine equipped with a fabric edge detector, characterized in that it is provided with a control means 63 for controlling the operation of the sewing machine based on the stitch count data.