High-stability broken needle detection device

Abstract

The invention provides a high-stability broken needle detection device which is difficult to fail and high in detection precision. The high-stability broken needle detection device comprises a detection rod (4), a fixing pipe (3) and a signal conversion circuit, wherein one end of the detection rod (4) is inserted into the fixing pipe (3) while the other end is suspended on the exterior of the fixing pipe (3); a first conductive part (14) which is in contact and connected with a pipe opening of the fixing pipe (3) in a swinging process is arranged on the detection rod (4); the signal conversion circuit comprises a voltage reduction unit and a signal output unit; the fixing pipe (3) is electrically connected with an anode of a high-voltage direct current power supply; the first conductive part (14) is electrically connected with one end of the voltage reduction unit; the other end of the voltage reduction unit is electrically connected with one end of the signal output unit; the other end of the signal output unit is electrically connected with a cathode of the high-voltage direct current power supply; a signal output end of the signal output unit is electrically connected with a controller of a hosiery machine.

Description

technical field [0001] The invention relates to the technical field of socks manufacturing equipment, in particular to a high-stability broken needle detection device. Background technique [0002] In the current broken needle detection device, the detection part is easily polluted to cause detection failure, and the stability is low. In order to avoid detection failure caused by pollution, there is a broken needle detection device that extends vertically downward from the upper end of the hosiery machine working area. When the needle is inserted into the upper end of the hosiery needle, when the needle breaks, there will be a phenomenon of thread stacking. The thread stack will push the detection probe to move upward, and the upward movement of the detection probe will trigger an electrical signal and send it to the controller of the hosiery machine, thereby detecting In the event of a broken needle, the part where the mechanical movement is converted into an electrical sig...

AI Technical Summary

Problems solved by technology

[0002] In the current broken needle detection device, the detection part is easily polluted to cause detection failure, and the stability is low. In order to avoid detection failure caused by pollution, there is a broken needle detection device that extends vertically downward from the upper end of the hosiery machine working area. When the needle is inserted into the upper end of the hosiery needle, when the needle breaks, there will be a phenomenon of thread stacking. The thread stack will push the detection probe to move upward, and the upward movement of the detection probe will trigger an electrical signal and send it to the controller of the hosiery machine, thereby detecting In the event of a broken needle, the part where the mechanical movement is converted into an electrical signal is located outside and protected against contamination, thus preventing the part where the mechanical movement is converted into an electrical signal from being polluted and causing failure. However, this type of broken needle detection device requires a detection probe It can only be detected by axial movement. In order to improve the detection accuracy, it is necessary to extend the detection probe into the upper end of the sock needle. In actual production, it is found that the above structure is not only difficult to ensure the accuracy, but also occupies a limited working area of ​​the sock machine, which is easy to entangle In addition, during the sock knitting process, the height of the sock needle needs to change constantly when knitting the heel, so the detection probe should be kept away from the upper end of the sock needle to avoid false detection. The above-mentioned detection probe extends vertically downward from the upper end of the hosiery machine working area to the upper end of the sock knitting needle to form a contradiction. In order to balance this contradiction, this contradiction needs to be considered in many processes such as design, installation, and debugging, so that it appears that design, installation, Debugging is more complicated, and the stability and reliability are lower

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