It is said that 80% of the colleagues of this "object" have not seen the equipment where it is located. It is said that 90% of the colleagues have not dismantled this organization. It is said that it takes at least three hours for 100% of the people to return to production.

Knock on the blackboard and start now...

This spare part is the pressure control mechanism on the scraper head of Speedline's MPM printing machine. It is used on MPM's Momentum Accela 125 and other models. It is widely used. The picture shows the mechanical part. There is also a pressure sensor connected to it. Feedback to the host and control the stability of the pressure of the scraper.

 

Why do you say that 80% of your peers have not seen an MPM printing machine?

The editor did not count the number of MPM printing presses in the electronics industry, nor did I find similar data to support my 80% view, but Speedline, as an established European and American printing press provider, is not a small company that can afford him. The price is 80% by default.

Why have 90% of the peers not dismantled it?

MPM's reputation in the industry has always been one of the best in the industry, and it is definitely the first echelon in the industry. It belongs to the leading C position, with extremely high stability, excellent performance, and relatively few abnormalities. The equipment is not bad, so no one is unreasonable. Go to this location.

At least three hours to return to production?

In production, the problem we encountered was that the equipment alarmed that "pressure control could not reach the set value", but when this spare part was abnormal, it went from illness to a few symptoms, to acceptable occasional failure, and then to the complete alarm of the equipment. Unable to produce, it may take several hours or even several days. One of the most important factors is to see at which stage the engineer performs maintenance? On the premise of the same ability of the engineer, in the early stage of the symptoms, the root cause may also need to be recorded by the hour. Hours, two hours are possible, not including the repair recovery after the problem is found and the time for spare parts collection. After the equipment is completely "down", the general maintenance process: disassemble parts, find the problem, diagnose the abnormality, receive spare parts, and restore The machine is repaired and tested until the line is normally turned on. This is the most basic maintenance process. Three hours is a conservative estimate (except for the repairer).

 

Problem confirmation: The top wire in the figure below is loose, and the Z axis moves up and down repeatedly, eventually causing the sleeve and the limit block to loosen, causing the pressure to be uncontrollable.

Recovery method: re-tighten the shaft sleeve and limit block, put the screw glue on the top wire and tighten it.

 

Written at the end: This repair process is not representative. It is very likely that the equipment was not processed with thread glue before leaving the factory, and years of movement caused loosening. But this is no longer elegant. The most important thing is: in view of this Repairing the machine is more time-consuming, and it is necessary to expand this problem horizontally, and check the mechanism of other equipment during the time of the line to reduce the abnormal shutdown of the production line.

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