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Thread breakage detecting device

A technology of thread breakage detection and bottom thread, applied in the field of sewing machines, can solve problems such as affecting the quality of workpieces, time-consuming, etc., and achieve the effect of ensuring product quality, improving production efficiency, and small size

Inactive Publication Date: 2015-07-22
WUJIANG WANGONG ELECTROMECHANICAL EQUIP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This is time-consuming and affects the quality of the workpiece

Method used

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Embodiment Construction

[0017] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0018] refer to Figure 1 to Figure 3 As shown, a broken thread detection device is arranged on the side of the bottom thread 9 between the sewing machine table 10 and the shuttle 11, and includes a reflector 8, which is n-shaped horizontally, with an upper plane A and a lower plane B Parallel reflecting plate 8, side is fixed on the sewing machine frame. The upper plane A of the reflector 8 is parallel to the bottom line 9, and the lower plane B of the reflector 8 is connected with a housing 7 through a thin nut 2, and the housing 7 is provided with a light-emitting tube 6 and a photoelectric tube 3. And separated by a light-shielding plate 5, the front of the luminous tube 6 and the photoelectric tube 3 are respectively provided with a lenticular lens 4, and the lenticular lens 4 is a monofocal semi-cylindrical lens, and the focal...

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Abstract

The invention discloses a thread breakage detecting device. The thread breakage detecting device is arranged at one side of a bottom thread between a table board and a shuttle of a sewing machine. The thread breakage detecting device comprises a pair of reflectors which are arranged in parallel, wherein the reflectors are parallel to the bottom thread, a shell is connected to one reflector, a luminescent tube and a photoelectric tube are arranged in the shell, the luminescent tube and the photoelectric tube are separated through a light screen, columnar lenses are arranged on the luminescent tube and the photoelectric tube respectively, a socket is connected to the bottom of the luminescent lamp and the bottom of the photoelectric tube, and the bottom thread is located at one side of the luminescent tube and the photoelectric tube. Once thread breakage occurs when a workpiece is sewn through the sewing machine, an electric signal is output by the device instantly, a stopping signal is output after the electric signal is shaped and amplified and passes through a comparison circuit, the sewing machine stops instantly, in this way, the quality of products is guaranteed, and meanwhile production efficiency is improved. The thread breakage detecting device is small in size and can be installed in a narrow space conveniently.

Description

technical field [0001] The invention relates to the field of sewing machines, in particular to a thread break detection device for industrial sewing machines. Background technique [0002] Originally, when an industrial sewing machine (such as an intelligent template machine) was used to sew a workpiece and the thread was broken, the machine was shut down by manually cutting off the power supply. Since the rotating speed of the sewing machine reaches 2500-4000rpm, the workpiece sewn during the manual shutdown process has often been sewed for a certain length. Like this, will return the workpiece that is sewn to original position and pull down bottom thread and upper thread, just can start to sew again. This is time-consuming and affects the quality of the workpiece. Contents of the invention [0003] The purpose of the present invention is to overcome the above problems in the prior art and provide a thread breakage detection device. When a thread breakage occurs in the ...

Claims

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Application Information

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IPC IPC(8): D05B69/36
Inventor 周玉峰郑志刚
Owner WUJIANG WANGONG ELECTROMECHANICAL EQUIP
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