injection moulding component

[ET3D]

Good morning to all
I would like to ask for your opinion / advice and maybe help on a piece that should be printed in injection.
I was sent this draft of the component, but in my experience I do not find it actually printable.
Can I ask you how you would intervene to fix the piece and actually make it printable?Thank you very much.
attached for those who wished I attached a step.

 

[MassiVonWeizen]

the annex is missing.
for me is a piece to get from fold and not from mold

 

[ET3D]

Sorry, I saw the annex correct, I try to re-bind it.
the mold does not have to make many printed, however it must do at least 20000 printed.
the piece I have freedom to change it, the important thing is that it can be feasible.
to describe it in short, this is an element that needs to be placed on a shelf and the tabs that come out serve to hold hooked and tilted another component, the logic that I need functions is that this support has fins that go to frame and hold tilted a caddy. I attach a photo that I'm not sure I've explained best.
Thank you.

 

[Fabietto]

seen so, as it says massive, it seems derived from cut and folded sheet.
but instead, if you are sure that it is obtained in injected thermoplastic, it is feasible, but you have to understand:
- the type of material,
- aesthetic, mechanical and dimensional characteristics,
and to industrialize them accordingly. . .
too little information you provided us. .

 

[ET3D]

seen so, as it says massive, it seems derived from cut and folded sheet.
but instead, if you are sure that it is obtained in injected thermoplastic, it is feasible, but you have to understand:
- the type of material,
- aesthetic, mechanical and dimensional characteristics,
and to industrialize them accordingly. . .
too little information you provided us. .

Hello, fabietto.
thanks for the answer, sisi is a customer request that is injection molded.
I'm sorry I'm not very practical, I try to give you more information I can.
-the material we usually die with is translucent black abs
- aesthetic characteristics affect me very little. above I have described to the best that I could of what kind of element it is and what we need it to do.
My doubts were about the feasibility given how the tabs are made, I couldn't imagine how to pull out the closures.
to add a fundamental detail is that this mold must necessarily be realized as a simple open and close, so it must not have movements.
I hope I have responded and added details they need. . .
Thank you so much for the support!

 

[Fabietto]

If the 4 rectangular wounds can be industrialized -> sformate, and created of the closing steps matrix/punzone inside them, you could place the particular rotated of about 10° so that the flank goes into extraction (remember the outer surface of the flank and the wings with the matrix, and the thickness revenues all in punch.
Sorry if I use specific terms, but who is from the world molds/moulding thermoplastic I think understand. .

 

[ET3D]

I understand the concept. I actually think that so you can actually do, I should try to hear the moldist.
Thank you very much!

 

[PIETRO2002]

you also rated starting from a slab in abs, cutting it to water and bending it (after appropriate heating ). Maybe it can be advantageous economically because of the number of pieces and since such a mold will not be cheap.

 

[ET3D]

hi piero, we had thought about it, we work a lot with plexiglass and fold it warm would not be a problem, only that 20000 units plus any reorders begin to be too many to do by hand.
we also thought about printing them in 3d but they are really many units. . .

 

[PIETRO2002]

hi piero, we had thought about it, we work a lot with plexiglass and fold it warm would not be a problem, only that 20000 units plus any reorders begin to be too many to do by hand.
we also thought about printing them in 3d but they are really many units. . .

Perhaps you could think of a mold that in one shot does the folds, interesting would make a cost assessment with the 3 solutions and see for each the tie point. .

 

[ceschi1959]

ciao @et3d , if you put the piece as you suggested @face You should have no problem. The loopholes on a thickness of 2 mm should not trouble you.
evaluate how to distort the walls highlighted in red (I have only highlighted two but the speech applies to all those similar), because it is not so simple.
currency:
- from which to put the extraction because the sign of the extractors could represent a problem.
- where to do the injection.

 

[Fabietto]

but just to understand the around. . @et3d what do you do for this particular?
built the mold? Do you have injection and molded presses? All 2? None of the two?
because, if you don't have tools and even molding, you can evaluate some online service type protolabs or xometry.
If you don't know, they give you the printed and finished piece. the mold, usually in aluminum, remains of their property.
from my experience are medium expensive, but if the piece repays. .

 

[Meteor02]

et3d that piece is not printable is a sheet, in order to realize such a piece of the injection lacking ribs, and excavations to keep the piece straight, it is not recommended to print large flat surfaces. if that particular must bear the load it is necessary to rinse also the fins. As always my advice is to ask those who have to print the product, by now all printers offer co design service and feasible verification.

 

[ET3D]

but just to understand the around. . @et3d what do you do for this particular?
built the mold? Do you have injection and molded presses? All 2? None of the two?
because, if you don't have tools and even molding, you can evaluate some online service type protolabs or xometry.
If you don't know, they give you the printed and finished piece. the mold, usually in aluminum, remains of their property.
from my experience are medium expensive, but if the piece repays. .

hi fabietto, I should take care of building the mold, even if it is not just in my ropes because usually I get the pieces already engineered and ready to the mold construction.
Anyway thank you for the advice!

 

[Marco F inox]

hi fabietto, I should take care of building the mold, even if it is not just in my ropes because usually I get the pieces already engineered and ready to the mold construction.
Anyway thank you for the advice!

today by injection of plastic materials, you can get very complicated pieces, even with subsquadri as in this case.
Let us remember that these presses, move half of a mold horizontally then to eliminate the subsquadri, just tilt the figure as already mentioned, the extraction of the canals should be possible anyway.
another system that I think the moulder prefers, is to print the piece vertically, with an external part guided by two inclined columns that go to close the subsquadro in phase of injection, and free it in phase of extraction.
all is obtained in the mold, without external spins.

 

[Meteor02]

hi fabietto, I should take care of building the mold, even if it is not just in my ropes because usually I get the pieces already engineered and ready to the mold construction.
Anyway thank you for the advice!

Here, more reason to let go and ask for the collaboration of the printer, that piece as it is has nothing to do with injection molding before thinking about the mold it is necessary to design the detail as much as possible following the guidelines for the design of printed details. Afterwards you will have to present the project of the particular to the customer who will have to accept or not the numerous changes, if he accepts everything then you can think about how to make the mold. replacement of metal with polymers is possible and economical but very complicated especially with regard to the type of material that is to be used in order to obtain similar results to the metal piece that you want to replace. do this without the necessary experience is strongly advised.

 

[Fabietto]

another system that I think the moulder prefers, is to print the piece vertically, with an external part guided by two inclined columns that go to close the subsquadro in phase of injection, and free it in phase of extraction.
all is obtained in the mold, without external spins.

I would have some doubt about this. .
less special needs, less development in mold height you have, the better is...
both for mold construction, both for extraction races, and for containment of lateral forces, etc.

 

[Fabietto]

hi fabietto, I should take care of building the mold, even if it is not just in my ropes because usually I get the pieces already engineered and ready to the mold construction.
Anyway thank you for the advice!

Bye.
as mentioned by @meteor02 Be careful, because that detail is definitely not engineered, and you run the risk that the customer expects you to solve all the problems aggratis.. .
in the automotive world in this case we talk about btp (built to print), where the moulder performs faithfully on the mold as it corresponds to the mathematical model,
and is not responsible if printing does not leave what you want. .
However, they are always "grey zones" but, to know before, you can hide the blow. .

 

[PIETRO2002]

I'm not in the industry, but as many users have pointed out, this piece as it is designed "has no need to do" injection molding, if you just want it so in abs why not leave the plate?

 

[ET3D]

Thank you very much to all for your answers, I have been really helpful.
to update on the processing at the end I heard the molder who gave me directions on how to fix the piece to print it.