Conveyor belt type needle detector and sensitivity testing method thereof

Abstract

The invention discloses a conveyor belt type needle detector and a sensitivity testing method thereof. The sensitivity testing method of the conveyor belt type needle detector comprises a method for performing sensitivity testing on the working state of the conveyor belt type needle detector and a method for performing sensitivity testing on the installing state of the conveyor belt type needle detector; the conveyor belt type needle detector comprises a detector body, a controller for controlling work of the conveyor belt type needle detector, a conveyor belt for conveying an object to be detected, a driving motor for providing driving force to the conveyor belt and a probe for detecting a detected object mixed into the object to be detected; a plurality of detection sensors are arrangedinside the probe, and a detection region is formed between the conveyor belt and the probe above the conveyor belt; the controller comprises a main control module, a working state determining module and an installing state determining module. Sensitivity testing can be simply, rapidly and effectively performed on the working state of the conveyor belt type needle detector, and sensitivity testingcan be performed on the installing state of the conveyor belt type needle detector.

Description

technical field [0001] The invention relates to the technical field of needle detectors, in particular to a sensitivity testing method of a conveyor belt type needle detector and a conveyor belt type needle detector. Background technique [0002] Before goods such as textiles, footwear, toys, food, pharmaceuticals, and plush toys enter the market, such as clothing before shipment or sale to customers or before packaging of finished footwear, in order to ensure the safety and comfort of users, it is necessary to remove foreign matter. detection. [0003] The needle detector, also known as the needle detector, is a ferromagnetic metal induction instrument and a detection instrument used in textile and other industries under the classification of metal detectors. It is mainly used for the detection of ferromagnetic metal foreign objects in textiles, such as the detection of broken metal needles in textiles. The most commonly used, more convenient and fast one is the conveyor ...

AI Technical Summary

Problems solved by technology

For this reason, during the test, it is necessary to change the different positions of the test bench on the conveyor belt and the different heights of the test card on the test bench to achieve the purpose of testing the parts with weak or strong detection sensitivity in the detection area. This test method requires multiple changes for each test, the test efficiency is low, and the user needs to manually place the test bench on the part that is considered to be weak in detection sensitivity. The placement operation is only based on the user's personal feeling, and there is a confirmation operation The problem of low accuracy and repeatability

[0007] In addition, the detection sensitivity of the detection sensor may also be affected depending on the installation status and location of the conveyor belt needle detector 1000. It may produce vibration interference, and the environment of the installation site has noise interference from such as electric fans or other machinery and equipment. Test the sensitivity of the needle machine to confirm whether the installation and setting state of the conveyor belt needle detector is correct and whether it is affected by noise such as electromagnetic waves from the external environment intruding into the detection area of ​​the detection sensor, thus causing the probe to fail to complete the normal detection work

However, the prior art still lacks a method for testing the installation state of the conveyor belt type needle detector

Images