JPS6126474U - Sewing machine control device - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

Figure 1 is a circuit diagram of this embodiment, Figure 2 is a needle phase graph,
FIG. 3 is a time chart of the terminals with respect to the movement of the needle shown in FIG.

Claims (1)

[Scope of claim for utility model registration] A pedal that enables starting operation in one direction and stopping operation in the opposite direction, and a detection means that detects the rotation angle of the main shaft corresponding to the upper position of the needle and generates a position signal. , a presser foot that always receives elastic force directed toward the upper surface of the throat plate; a lifting means connected to the presser foot mechanism so as to raise and hold the presser foot above the throat plate against the elastic force; and a lifting means connected to the lifting means. An electromagnet that operates the lifting means by energizing Q1 A control circuit that drives the sewing machine in connection with a pedal start operation and stops the sewing machine in response to a subsequent position signal in connection with a stop operation; It is equipped with an operating circuit that energizes the electromagnet only for the period required to remove the material to be sewn from the sewing part in relation to the position signal, and then de-energizes it, and when the sewing machine is stopped, the presser foot is raised and the sewing machine is stopped after a certain period of time has elapsed. A sewing machine control device characterized by automatically lowering the presser foot while the presser foot remains in place.