A detection method for easy-open rivet structure

Abstract

The invention discloses a detection method for a rivet pin structure of an easy-open end. The detection method comprises the following steps: applying an instant adhesive on a tab and the rivet pin which is then cured and dried; cutting the easy-open end into two parts along the diameter of the rivet pin, and taking the tab part as a detection part; cleaning the detection part; placing the detection part upright on a digital microscope, making the cross-sectional structure face a microlens, and adjusting the magnification until an image is clearly displayed on a computer screen; and accuratelymeasuring the cross section image and comparing the microscopically magnified image with an image of a standard part to determine if the detection part meets the standard. The detection method can visually reflect whether the wall of the rivet pin is uniform, the strength of the riveting of the tab and the rivet pin, and the burr phenomenon between the rivet pin and the tab, etc. Through the measurement of a computer measurement software and the comparison between the detection part and the standard part, the technical defects at the rivet pin structure can be accurately and quickly found, and the quality problem of the easy-open end is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of pop can processing, and in particular relates to a detection method for a rivet structure of an easy-open lid. Background technique [0002] In the process of packaging cans in the industry, the sealing degree of each part of the easy-open end on the can is an important indicator to measure the quality of the can package. Among them, rivets are usually needed in the easy-open end to seal the front and back of the ring on the easy-open end. Fixed riveting, therefore, the rivet structure of the easy-open end is an important part of the entire can, and the tight riveting of the rivet also determines the packaging of the entire can. Usually, the size and riveting degree of the rivet on the easy-open end do not conform to Standards often cause defects such as the drop of the pull ring on the can, and even the leakage of liquid at the rivet. Traditionally, the detection of the rivet structure of the easy open ...

AI Technical Summary

Problems solved by technology

[0002] In the process of packaging cans in the industry, the sealing degree of each part of the easy-open end on the can is an important indicator to measure the quality of the can package. Among them, rivets are usually needed in the easy-open end to seal the front and back of the ring on the easy-open end. Fixed riveting, therefore, the rivet structure of the easy-open end is an important part of the entire can, and the tight riveting of the rivet also determines the packaging of the entire can. Usually, the size and riveting degree of the rivet on the easy-open end do not conform to Standards often cause defects such as the drop of the pull ring on the can, and even the leakage of liquid at the rivet.

Traditionally, the detection of the rivet structure of the easy open end is often limited to the rough detection of the diameter of the rivet, the thickness of the rivet, and the excess thickness of the rivet at the rivet. The quality defects of ring pull off and liquid leakage from rivets often cannot be solved fundamentally

[0003] In addition, in the processing of the riveting strength of the rivet, it is often reflected by the multiple of the reverse pull force and the opening force, so that the uniformity of the rivet wall cannot be directly reflected, the strength of the riveting of the pull ring and the rivet, and the The burrs of the rivets cannot be directly reflected, and the quality defects at the rivets cannot be completely solved: pull-off rings, liquid leakage at the rivets, etc., will cause the rivet structure to not be corrected in a timely, accurate, and fast manner, and thus product defects cannot be found in time

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