Monitoring method for processing fault of transmission star gears on basis of vibration signals and monitoring system

Abstract

The invention relates to the field of metal can production, in particular to a monitoring method for processing a fault of transmission star gears on the basis of vibration signals. The monitoring method is applied to a monitoring system for a transmission star gear mechanism of a two-piece can necking and flanging machine. The monitoring method comprises the following steps that a, an adjustablestar gear and a fixed star gear are made to rotate synchronously; b, normal vibration data under the normal operation condition is acquired; c, a reference eigenvalue range is established according tothe normal vibration data; d, real-time vibration data in the working process is acquired in real time; e, a detection eigenvalue is established according to the real-time vibration data; and f, a fault diagnosis module conducts computing and comparing and conducts fault reminding operation when a differential eigenvalue result is out of the reference eigenvalue range. According to the monitoringmethod, production equipment can be monitored in real time on the continuous machining condition of the production equipment, operation personnel can be quickly and precisely reminded to check the fault, and therefore the serious quality loss can be avoided; and the condition that the production equipment stops can be avoided as much as possible, and therefore the production efficiency is greatlyimproved.

Description

technical field [0001] The invention relates to the field of metal pop can production, in particular to a monitoring method and a monitoring system for processing out-of-synchronization faults of transmission star wheels based on vibration signals. Background technique [0002] In the fast moving consumer goods industry, metal cans occupy an absolute market share. According to the production process of metal cans, metal cans are divided into two-piece cans and three-piece cans. Among them, the two-piece can production line has achieved high-speed, fully automated production, and the production efficiency has reached the peak of the industry, and the industry competition has become increasingly fierce; ensuring product quality and reducing the generation of waste cans has become an important way to reduce production costs. The main processes in the production process of two-piece cans include necking and flanging, etc., and the main quality problems that arise are can body cr...

AI Technical Summary

Problems solved by technology

According to the summary of maintenance experience, the main causes of can body creases, scratches, neck scratches, can edge damage, can edge depressions, and large fluctuations in the size of the flanging are mainly caused by the transmission star wheel of the two-piece can necking and flanging machine. The adjusting star wheel is loose; the transmission star wheel of the two-piece can necking and flanging machine includes a fixed star wheel and an adjustable star wheel that can be adjusted relative to the fixed star wheel. When the fixed star wheel and the adjustable star wheel are equipped with semi-circular teeth synchronous docking will not be misaligned, but when the relative position between the adjustable star wheel and the fixed star wheel deviates, the semi-circular tooth gap between the two There will be meshing misalignment at the circular tooth mouth, and the transmission between the adjustable star wheel and the fixed star wheel will not be synchronized, causing the can body to be stuck during the transmission process, and then it will be damaged to varying degrees and scrapped

[0003] At present, when there are batch quality problems in the necking and flanging process of two-piece cans, the processing measures are to shut down the production line, and the maintenance personnel will check the oil circuit lubrication, air pressure pipeline, test rubber rollers, and clean up aluminum powder impurities one by one based on past experience. , adjusting star wheel clearance and other measures to find the root cause of the problem is not only inefficient, it is difficult to find the root cause of the problem, and the production of two-piece cans is a high-speed continuous automatic production, which cannot be stopped for regular shutdown inspections, which will seriously affect production efficiency. Shutdown detection is only carried out when there is a quality problem; at this time, irreparable economic losses have already occurred

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