Saturday, January 31, 2015

1.30.15 -Night Shift Activities

Worked on Preventive Maintenance of Robots. Mp#9 is complete.

The soleplate press at Mp#23 ran tonight until about 10:30. It did have several plc faults which had to be cleared. The only fault error I found was related to internal memory retentive data lost.

What I did observe during operation was a situation where it got out of sequence because the horizontal bender did not bend the tab completely. The operator removed their hands during cycle and it was interrupted. When it was reset to resume operation- the vertical cylinder did not retract and the part could only be removed by manually lifting the vertical cylinder upward to remove the part. Then it had to be unplugged before it would reset. This condition did not result in a plc fault however.

The operator also requested that a pocket be milled out to allow the operators fingers to get underneath the sole plate after it is pressed. As it is now, it is somewhat difficult due to the tight fit. The slot would not affect the quality of the operation, so that may be something to consider?

Mp#28- Had an issue where the gate valve was loose from the frame of the machine. I tightened the screws. It also had an issue with the liquid color signal not working. The relay needed replaced.

Mp#1- The robot end of arm tool was not releasing the parts after removal from the mold. I looked at the program and it seemed to be alright as it was set up for one cavity. As I examined the EOAT I found that the air rail was not inserted completely. One thing we could do to improve this minor stoppage issue would be to add some type of visual confirmation.

PP#8- The pad printer was not indexing the tape clean and was not printing very well. I adjusted settings on the delay / dwell timers, positions, and set up the tape clean. I also wanted to know if the Kent washing machine is functional and what are the primary concerns with using it? I ask this because I think the techs could save a lot of time by using it. The idea of a mobile ink cart was jogged around today. Isn't that what the washer cart is for? I noticed them using a table instead.

PP#4- I added a longer cord and left it plugged up in the shop. It seems to be working fine now but will need to be tested on a production run after set up.

Have a great day!

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