Control device for sewing machine

Abstract

The invention provides a control device for a sewing machine. The control device comprises a workbench, a sewing device arranged on the workbench, a thread trimming device arranged on the workbench and a foot rest, wherein the thread trimming device is connected with a controller; the foot rest is connected with a first connecting rod; the outside of the first connecting rod is sleeved by a connecting frame; a first fixed part is arranged above the connecting frame, and a second fixed part is arranged below the connecting frame; a spring is arranged between the connecting frame and the second fixed part; the upper end of the first fixed part is provided with a contact; the connecting frame is connected with a contact switch matched with the contact; the contact switch is connected with the controller; the connecting frame is fixedly connected with a second connecting rod; and the upper end of the second connecting rod is provided with a switch arm connected with the sewing device. By using the control device for the sewing machine, provided by the invention, a sewn fabric thread can be automatically trimmed within the first time after the sewing machine stops sewing by virtue of the foot rest, and manual thread trimming is not needed.

Description

technical field [0001] The invention relates to a control device for a sewing machine. Background technique [0002] The control device of the sewing machine is a device used to control the start and stop of the sewing action of the sewing machine, and the main components of the control device of the sewing machine include a pedal, and the staff can start and stop the sewing action of the sewing machine by stepping on the pedal back and forth. When the sewing action is stopped under the control of the pedal, the staff needs to cut the sewing thread before taking off the fabric to sew the next piece of fabric. For manual cutting, the fabric needs to be pulled out for cutting. The cutting action needs to elongate the sewing thread, which causes unnecessary waste of sewing thread. [0003] The staff will manually cut off the excess threads on the fabric after sewing, and start sewing again through the pedal after cutting off the threads. This sewing process will easily lead to...

AI Technical Summary

Problems solved by technology

[0002] The control device of the sewing machine is a device used to control the start and stop of the sewing action of the sewing machine, and the main components of the control device of the sewing machine include a pedal, and the staff can start and stop the sewing action of the sewing machine by stepping on the pedal back and forth. When the sewing action is stopped under the control of the pedal, the staff needs to cut the sewing thread before taking off the fabric to sew the next piece of fabric. For manual cutting, the fabric needs to be pulled out for cutting. The cutting action needs to elongate the sewing thread, which causes unnecessary waste of sewing thread

[0003] The staff will manually cut off the excess threads on the fabric after sewing, and start sewing again through the pedal after cutting off the threads. There will be differences in the thread openings, and the sewing quality cannot be guaranteed. If the worker's foot accidentally touches the pedal during the manual thread trimming process, the sewing machine will start sewing, which will easily cause the worker to be injured during the work. Threatening the personal safety of staff

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