Mold maintenance doubt
I have a new double injection mold, its weight is around 1 ton. I want to start making a budget for maintenance per year. Considering the total cost of the mold, Could you tell me, what percentage should I consider for its maintenance per year (preventive and corrective)?. Thank you in advance.
This question is difficult to answer due to the many variables associated with a tool build. Giving a detailed answer would not be possible in this forum, but by keeping a tool maintenance log, and referring to historical data, you can fine tune your annual maintenance costs going forward.
Since the mold is newly acquired you have a couple of options that I would suggest. First, (and by far the easiest, but not necessarily the best), use a percentage of mold cost based on mold complexity. For example: 5% for a simple mold, 10% for more complex w/and side actions, etc.
The second suggestion, one that I personally believe gives you a more accurate picture of what one might expect from a new tool, is to have an experienced tool maker do a detailed inspection of the tool and make recommendations as to what your maintenance schedule should include along with suggested replacement intervals of pins, bushings, wear plates, etc. With your tool expert’s information in hand you should be better able to calculate what annual maintenance costs might include.
Another advantage of a detailed initial inspection is that it might also reveal existing tool issues, (even if new), that might not otherwise be exposed until your first production run. That initial inspection may also give you an idea of what mold components to stock so that mold downtime would be minimized should there be a tool issue with high wear components.
How or what you pass on to the customer is another discussion.
Hope this helps.
This is really a guessing game, We have no ides how complex, how many cavities, how many slides, how many lifters, how many nozzles or hot drops and what type, what material, how many parts per week....
You're best bet is a SWAG based on the data you've given us -----Scientific Wild Assed Guess
When you say "new double injection mold" I assume you are talking about a two material mold and injection press. Is it a multi-shot process or a co-injection process? If multi-shot, you may need to consider any costs for the maintenance of the mold rotation and/or robotic transfer and/or manual/ hand transfer.
We have been involved with very complicated rotate systems as well as some very simple rotate systems. Typically those that are custom, and more specific to the mold design, seem to have the highest potential for issues. Needless to say--there could be issues involved with wear, especially where moisture could possibly get into friction wear areas—if you have them.
Just realize that there may, or may not, be maintenance costs associated with how you are processing and transferring the product on top of all the other considerations brought up by others.