Battenfeld mechanical problem

I am looking for technical documentation
injection molding machine for battenfeld
Type: 100/40 HK 1979

I'm looking for the electrical machine Battenfeld HK 50/25 year 1979
REGARDS

plastimex39@yahoo.fr

Hi;
you don´t say nothing about battenfeld service department ...
ok. have you checked the alumminium piece who fix the pump to the motor??
sometimes this piece fall down a little, and the pumpe and the motor aren´t in the same line. This broke the kuplung very fast.

best regards

On your type of machine, the retrofit of the control has to be programmed with some time delay actuation. We have a 140Ton with an Omron PLC that I put in after the Unilog 4000A burned down. To get rid of the coupling shearing i had to program in a delay of .15 sec before charging so it doesn't change over without first releasing some of it's pressure. The way to do this is not to delay everything, but have the function in question act for a longer time then the pumps. In your case make the program in a way that the charging valve is supposed to stay open 0.15-0.25 secs longer after the pumps stopped. If not, the sudden accumulated hydraulic pressure in the system has nowhere to go, but squeeze the living daylights out of your coupling's urethane pillow every time. It will take it for a couple of days, but not more. 85 bars sounds like a lot of pressure to withstand even for urethane couplings.

Thank you for your reply and intrest.
Motor and pump are aligned so that shouldn't be the cause.
I am not shure about electric-motor protection, but it's reduced to minimum.
My machine has 2-stage dosing, and this problem used to occur always when switching from 1st to 2nd stage (reducing speed and pressure from 85bar to 50bar). Last time, I have set both speed and pressure to same value and now it happened when 2nd stage of dozing finished.

Thanx again.
Nedim Sabic

How is the alignment between motor and pump?

brent

Sounds like the pressure setting for screw drive is set too high, causing motor drive coupling to shear during screw rotate. Usually the electric motor will trip out electrically before this happens.