What should be paid attention to when using the needle detector to accurately detect broken needles

The use of needle detectors to detect the needles of knitted products is carried out before the finished products are packaged and boxed. Before the products are boxed, they must be inspected piece by piece. Usually, conveyor-type needle detectors are often used. The needle detector uses the principle of magnetic field to effectively and accurately detect the existence and specific location of iron objects such as broken needles. When using the needle detector, you should pay attention to the following points:

       ①The needle detectors use the standard test card of the test piece to test the bottom, top and middle of the conveyor belt of the needle detector before the needle inspection every day. Otherwise, it cannot be used, and the relevant personnel should be notified immediately to debug the needle detector;

       ②In the process of needle inspection, the sensitivity of the needle inspection machine must be compared and recorded with a standard block every 2 hours. Before shutting down, a comparison test and record should be carried out again;

       ③ For products requiring needle detection by customers, the needle detection must be carried out one by one after the inner packaging is completed;

       ④For products exported to Japan, for acrylic cotton, artificial wool, etc., the needles must be checked after cutting;

       ⑤When the customer requests, the zipper and other related accessories should be checked for needles;

       ⑥ When the product passes through the needle detector, and the machine emits a beeping sound and a light alarm, the product must be removed, unpacked for manual inspection, removed from broken needles and iron filings, and re-inspected after repacking;

       ⑦ Unchecked and checked products must be stacked in strict groups to avoid confusion. Once confusion occurs, the needle must be rechecked.

       In addition, clean the machine table and the surrounding ground before and after the needle detection, and cover the needle detection machine with a cover cloth after the needle detection is completed. Hope the above introduction can give you more understanding and understanding.