Tire nipple expansion method and system

Abstract

The invention discloses a subport extension method and a subport extension system of a tire. The subport extension method of the tire comprises the following steps: driving an extending mechanism to extend a subport through the rotating of a motor; in an extending process, detecting motor driving torque; judging whether the subport extension amplitude reaches a target according to the change situations of the motor driving torque, and stopping extending the subport after the subport extension amplitude reaches the target. The subport extension method of the tire disclosed by the invention caneffectively avoid the problems that the tire jumps out because the subport is extended too large or image acquisition is inaccurate when photoelectric detection is performed because of insufficient extension of the subport; reasonable subport extension amplitude can ensure high-quality X-ray imaging; in addition, the method can also be popularized to other situations which require movement presetdistance, such as an inside diameter-related tire supporting action, and is wide in applicability.

Description

technical field [0001] The invention relates to the technical field of tire detection, in particular to a tire slit expansion method and system. Background technique [0002] At present, when the tire X-ray equipment of various manufacturers performs X-ray imaging on radial tires, the slit expansion adopts position control, that is, the initial slit width is measured first, and the size to be expanded is calculated according to the final required slit width. Specifically, it means: the size to be expanded = the final required width of the slit - the initial width of the slit. [0003] This method has the following disadvantages: usually for a batch of tires, a standard size will be determined, and the size of each tire in the same batch that needs to be expanded will be calculated based on the standard size, but due to processing accuracy problems or deformation of the tires such as extrusion Under normal circumstances, there will be deviations between the actual spigot siz...

AI Technical Summary

Problems solved by technology

[0003] This method has the following disadvantages: usually for a batch of tires, a standard size will be determined, and the size of each tire in the same batch that needs to be expanded will be calculated based on the standard size, but due to processing accuracy problems or deformation of the tires such as extrusion Under normal circumstances, there will be deviations between the actual spigot size and the standard size, so the calculated results will have problems, and the final expanded size does not match the final required spigot width, resulting in tires popping out when the spigot is expanded. , The phenomenon of breaking away from the detection mechanism, thereby interrupting the detection process, and even causing quality accidents, in addition, it will also affect the detection image during the tire defect detection process

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