Hi,
I don't use blade ejectors often but I have a strange linear undercut I want to relieve with a blade ejector, but in every cataloque I check I find a maximum width of 2.5mm - why so small? I need one that is
4-5mm. If you know a company with a wider selection I'd appreciate knowing. I need to spec something before I ship out the design.Thanks,
Zander
Hit off into Moldmaking Technology's website:
Bo
Zander wrote:
I have a part on my desk that has blade ejectors (for the same reason). The ejectors were custom built by the toolmaker.
Yes, it seems it will be custom built here as well, the ends need to be wire cut anyway. I was hoping to incline these from the line of draw to help release the part more easily but time is too short and numbers aren't high enough.
That70sTick wrote:
Check out Misumi. Looks to me like they have some that are up to 5.5mm thick. Page 155,156 of catalog 2003.5-2005.4 ; Standard Components for Plastic Mold.
Good Luck,
jk
Zander,
Try Progressive
They also have "Flexicore" undercut release system that may be of interest. I've not used these yet - but I'm dying to when an application arises!
Kev.
Zander wrote:
Cool, thanks for the links guys. Procomps has a unilifter 'undercut release system' which is ummm maybe something designed exactly for my application! doh!
Zander
alphawave wrote:
I think DME has a device like the uni-lifter, too, just from my memory, but it may be it was a distrubutor only at one time.
Bo
Zander wrote:
I think DME has a device like the uni-lifter, too, just from my memory, but it may be it was a distrubutor only at one time.
Bo
Zander wrote:
Oops, hit the Send button twice.
DME has a "Vector-Form Lifter"
http://216.91.69.172/DCatalog/pages/K38_2_frame.htm A bit different, and indeed more complex than the UniLifter
Bo
Unilifter and flexicores both work well in the proper application. I've been using them for years. The neat thing about using Progressive components is that there is 3-d data readily available on their web site. It's parasolids,step or Iges though. Still useful.
Good Luck.
jk
In my application I really just need the core blade since I just need it to run vertically. The part width is approaching the mud base limits so if I angled the unilifter the mold support plate (of the mud base) would need to have a notch machined into one of it's obrounds. This is generally frowned upon!
Again, thanks for all the info everyone.
Zander
jk wrote:
How many cycles will flexicores typically last before breaking?
I'm wondering what people have seen in real world use.
Bo
jk wrote:
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