mold for pipe

[Dade73]

Dear children, first of all I thank all for the very good info that can be drawn from this community.
I attach .pdf file of a tube that we currently make with blowing technology, we want to make this tube with an injection mold.
the problem I can't get around is the curve (and its subsquadri):angry:, could you help me?? ? ? ?
Thank you all.

 

[Mocca]

Dear children, first of all I thank all for the very good info that can be drawn from this community.
I attach .pdf file of a tube that we currently make with blowing technology, we want to make this tube with an injection mold.
the problem I can't get around is the curve (and its subsquadri):angry:, could you help me?? ? ? ?
Thank you all.

Bye.
you could use a banana movement :biggrin:
I'm kidding. . .
in these cases it is necessary to foresee 2 movements, which realize the heart of the tube, placed at 90° between them and divided into the center of the elbow.
the problem will be in the dimensioning (sharing) of the mold dictated by excessive racing that will be necessary for the emergence of the subsquadri.
In addition, the inner radius (the smaller one) will be "vitiated" with an edge, which would be subsquadro for both semovents.
Am I clear?
greetings

 

[Dade73]

but my problem arises in keeping the curve + small, such as (or almost) the design, without creating excessive thicknesses or edges; I would need the "banana" movement in the head of one or both males who parade from the mold. There is who has made similar objects, but how did he do it? ? ?

 

[Matteo79]

Hi.
I would be curious to know, if possible, whether the current blowing mold is traditional or aspirated and how you finish the pipe.
what tolerances do you have on the thickness?
material?

ps:
classic Italian design tube with impossible tolerance requirements?

 

[Dade73]

hi matteo, the materials used are ps, or abs, with this "technology you blow well also the rigid pvc, with which you can have more constant thicknesses.
the mold is not aspirated and the thicknesses have big differences due to uneven ironing, due to the cooling of the parrison when laying it in the mold. the thickness can vary silla section also of a 30%.
the tube at the end of the processing undergoes 2 cuts at the ends to eleminate the closures of the parrison on the mold.
I hope I've been clear.
hello and good Sunday