Add an extra cavity to a two cavity mold, good or not?
if i want to add an extra cavity in my mold with two cavity already…which risks i need to take account and someone did this before…which results did you had (good or not)?
2: whether the press tonage is enough.
if there 2 are ok, all other issues can be fixed.
After analysis of the mold and mold design may be possible.
It is an operation that is done infrequently but is not a problem. Should be taken into consideration some points.
Points to consider:
* is space in the mold for good cooling of the new piece?
* is space for the new part and extraction?
* a balanced fill-it is recommended that the length of the injection channel has the same perimeter in three parts. Is it possible?
* may need to put more Kos to balance the extraction, it is possible?
* one more piece in the mold may force a change in injection molding machine. Analyze capacity and injection molding machine projected area of three parts.
I recommend showing mold or mold design or both to a project designer.
Additionally, you're taking a risk. Not just that you may not get the extra cavity to work properly, but that the two cavities that are already working won't fill properly anymore either. Depending on how old the current mold is, uneven wear may become an issue as well. You could end up wasting all that time and money you're dumping into it only to discover that you need to make a new mold anyways.
I don't know your specific situation, but if you're talking about adding extra cavities, you obviously have more demand than you expected, so I would recommend just making a new mold. Then you'll have the 2 cavity mold for backup if something happens with the new one.
1) I have enough space in my Mold
2) I can guarantee good balance
3) The Mold is New (less than 20% of use)
According your know-how what do you suggest (recommend):
1) Finally to build a new mold (only extra cavities needs) - more expensive, but less risk, also part cost increase
2) To build a new mold (all cavities required) - much more expensive, but less risk
3) Planning a extra cavity to soak up the volume increase - less expensive, but with risks. Also possibility to decrease price/cost by part.