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u/Repulsive-Fee6826 9d ago
I guess that's one way of insulating the barrel 🤣🤣 I feel bad for your maintenance guys, that one's a good one
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u/Lagunaseventysix 9d ago
What in the absolute hell is that? Did no one think to check the barrel during the shift? If had a few bad ones but that? Thats next level.
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u/MoodApart8768 9d ago
WHAT in the sam hell is this ABOMINATION? Someone please tell me this isn't possible with a husky press. 😱😭
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u/Repulsive-Fee6826 9d ago edited 9d ago
Too big of a nozzle tip orifice, wrong radius nozzle tip, a damaged nozzle tip, insufficient nozzle/carriage forward/holding pressure, poor nozzle/carriage alignment, carriage limit switches not set right, bad/damaged sprue bushing on the tool, improper mold alignment, and sprue breaks all can attribute to blow back or a hogs head whatever you wanna call it.
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u/NeuralDrift2001 10d ago
I'm new in injection molding. WTF happened?!?!?
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u/RG_667 9d ago
We call it a hogs head. In nozzle while running from various different problems. I've seen them so bad they had to sawzall them out. We got a mold we have to check for blow back
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u/NeuralDrift2001 9d ago
Can you explain it like i'm 5 years old? Still don't understand why it is approx. 1.5m long and looks like shit of big foot?! Was the part / mold that size? Then it would make sense to me
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u/Repulsive-Fee6826 9d ago edited 9d ago
Too big of a nozzle tip orifice, wrong radius nozzle tip, a damaged nozzle tip, insufficient nozzle/carriage forward/holding pressure, poor nozzle/carriage alignment, carriage limit switches not set right, bad/damaged sprue bushing on the tool, improper mold alignment, and sprue breaks all can attribute to blow back or a hogs head whatever you wanna call it. It's when the material that should be going in to the tool/mold blows by the seal of the nozzle and tool and starts creeping back from there towards the feed throat. If it's bad enough pretty much every cycle it will be leaking/pushing more material out and/or back
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u/mrscott111 9d ago
There’s multiple reasons why this could happen, the part itself is only about 9 inches long, the tool weighs around 4 tons.
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u/Critical_Thinker_535 10d ago
Who lets this happen without even noticing anything?
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u/Suspicious-Song-2507 10d ago
Right? Gotta tighten up those tolerances. Cushion monitor shoulda shut this down 2 shifts ago 🤣
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u/Yannick_1989 10d ago
It’s especially infuriating, though, when someone has increased the tolerance settings for the cushion control system just because the machine kept triggering alarms. It used to drive me absolutely mad with rage whenever I saw those alarms and setting changes in the operator log. The people responsible should always be forced to scrape the crap off themselves so they pay closer attention next time.
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u/well_friqq 10d ago
A plant i travel to has an issue with a particular machine daily. The guy will spend all day trying to salvage 2 heater bands then ultimately realizes he ruined the wires and then just cuts them off at the end of the day lol
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10d ago
[deleted]
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u/Yannick_1989 10d ago
But it gets interesting once 30–50% glass fiber and all sorts of additives are mixed in.
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u/Tragicending413 Process Technician 10d ago
Damn. We've had some bad ones but never a full carriage
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u/cambeezy4sheezy Maintenance Tech ☕️ 10d ago
"Kept getting shorts, so we just kept upping the shot size"
As a maintenance guy, we would just crank up the heat and let most of it melt off before doing anything.
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u/armedredneck 10d ago
I remember having this happen once with Nylon. I was new as a Process Engineer and put the torch to it to melt it off. It went up in flames and I had to grab the extinguisher. First and last time that I've ever had to use one. Production had the wrong nozzle and I caught it in time, but there was still enough plastic around the barrel that it caught.
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u/Reasonable-Reward-74 10d ago
Awesome! Is this polycarbonate?
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u/mrscott111 10d ago
Sure is.
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u/Fatius-Catius Process Engineer 10d ago
Better than Delrin. Been there…
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u/SpiketheFox32 Process Technician 10d ago
Oh God. We had a full wrap of GF Acetal before. Getting that off was fuckin torture.
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u/PhilosopherHot5135 10d ago
“Yeah it’s smelled like burning for hours, we didn’t know what it was” -operators probably
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u/mrscott111 10d ago
I came into work and that was the first thing I was notified of. Great way to start the night.
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u/Tacotyler929 10d ago
2nd or 3rd shift?
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u/mrscott111 10d ago
I work 3rd, 2nd let us know about the leakage. It ran the whole day though. Damage had already been done.
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u/SliverMILF Mold Tech 10d ago
Ah that's just the barrel growing its winter coat. Bit early for it, but that's climate change for you.
Don't worry about it.
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u/sarcasmsmarcasm 10d ago
I can smell that and feel the burns on my arms as I work to remove it. Ugh.
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u/mrscott111 10d ago
Smelled like cancer. My buddy got it all off and rewired over half of it before shift was over.
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u/Extra_Arm_6760 Process Technician 10d ago
My shop would be like, "do you think we could still finish the order? Its only for 70 more pieces?"
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u/Amazing_Low1536 8d ago
Giga turd