Sewing machine bottom line early warning device and early warning method thereof

Abstract

The invention relates to an early warning method of a sewing machine bottom line early warning device. The sewing machine bottom line early warning device is designed for solving the technical problem that an existing similar product is inconvenient in bottom line early warning, poor in effect and higher in manufacturing cost. The early warning device comprises sensors, an audible-visual alarm and a controller. The key design points of the early warning device are that the sensors comprise the first sensor for monitoring the rotation speed of a main machine in a sewing machine and the second sensor for monitoring the angular speed of a bobbin in the sewing machine, and the controller is used for receiving signals acquired by the first sensor and the second sensor, controlling the main machine in the sewing machine to rotate and controlling the audible-visual alarm to warn early. The angular speed of the bobbin can be sensed by the second sensor to reach the safe angular speed in early warning and achieve early warning operation. The sewing machine bottom line early warning device is little in change on an existing sewing machine and low in manufacturing cost, uses intelligent control to reduce product reject rate, effectively reduces labor intensity of operators, reduces labor and is suitable for sewing machine bottom line early warning operation or improving structures of similar products.

Description

technical field [0001] The invention relates to a sewing machine, in particular to a sewing machine bottom thread warning device and a warning method thereof. Background technique [0002] A sewing machine is a machine that uses one or more sewing threads to form one or more stitches on the sewing material to interweave or sew one or more layers of sewing material. Sewing machines are generally classified into household sewing machines and industrial sewing machines according to their uses. Since industrial sewing machines have higher requirements for working conditions and sewing technology, they have more functions and more complicated technologies than household sewing machines. [0003] Although the existing industrial sewing machines have a high degree of automation, they still need to invest a lot of manpower and material resources. For example, the bobbin of the sewing machine is a consumable item. When the bottom thread is about to be used up, the bobbin needs to be ...

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the above disadvantages, the purpose of the present invention is to provide a sewing machine bottom thread early warning device and its early warning method in the field, so as to solve the technical problems of inconvenient bottom thread early warning, poor effect and high manufacturing cost of existing similar products.

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