On-line detection technology of reversion defect of disposable injection needle

Abstract

The invention discloses an on-line detection technology of the reversion defect of a disposable injection needle. A detection device comprises a lighting device and a CCD industrial digital camera used for acquiring an image; a conveying device comprises a [c] FP controller, a step motor, a belt wheel, a conveying belt and the like; and a virtual apparatus LabVIEW is used for constructing a software platform to realize automatic detection and alarming of the reversion defect of the injection needle. In a process of producing and assembling the disposable injection head, the needle is easy to produce the reversion defect (a needle point is inserted into a needle stand); and because shapes of the needle point and the bottom are different, the shape of the needle point after the reversion changes, which is the detection basis. The designed lighting device provides uniform stable shadowless lighting, under the action of the lighting device, the CCD camera obtains a sharp image of the needle point, and the reversion or not of the needle can be detected accurately by using the LabVIEW virtual software platform. A detection result is directly displayed by computer software and alarmed.

Description

technical field [0001] The invention relates to an on-line detection technology, in particular to an on-line detection technology for detection of reverse assembly defects of disposable injection needles. Background technique [0002] At present, my country's disposable injection needle manufacturers are using manual visual methods to check whether there is needle reverse loading in the needle production line. This artificial visual method has a large workload, and because the diameter of the needle is very small, the reliability of manual visual inspection for a long time is poor, and it depends on the experience and responsibility of the inspectors. Repeated operations for a long time will easily cause visual fatigue and reduce work efficiency. It is extremely low, and the damage to human eyes is relatively large, so it cannot meet the needs of mass production. Contents of the invention [0003] The purpose of the present invention is to provide an online detection tech...

AI Technical Summary

Problems solved by technology

This artificial visual method has a large workload, and because the diameter of the needle is very small, the reliability of manual visual inspection for a long time is poor, and it depends on the experience and responsibility of the inspectors. Repeated operations for a long time will easily cause visual fatigue and reduce work efficiency. Extremely low, and more harmful to human eyes, can not meet the needs of mass production

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