Toyota embroidery machine - retrofit

To be honest. I think I would ad a lever and a switch for homing (plus index). But it depends. Maybe you want to have it as original as possible?

Forget the pots, you can do without them, might need adding a home switch.
And also open the possibility of working with roll's of material, meaning not being limited to a certain length.

If the original manufacturer thought that is was important enough not to require homing to go to the trouble of fitting potentimeters I would be inclined to follow their lead.
I don't think it's a difficult thing to integrate.

i'm sorry i'm back so late, i was in the middle of cleaning the machine.
i think i'll keep the potentiometers, because i've never coded a homing with an encoder so this will allow me to improve, and if i never manage to, it's easy to dismantle so i could insert home switches.

 

I'm trying to identify each component to find out how this embroidery machine works.

I have two rotary solenoids that operate elements in the bobbin.

I presume that this lever locks the bobbin. Is this correct?

 

For this component, I'm not sure. At first glance, I have the impression that it cuts the thread, but I have a rotary solenoid on the upper arm.
The way it works, when the rotary solenoid is active, it engages the system and the component moves back and forth when the needle is up and stays in the position shown in the photo when the needle goes down and up.

 

greg23_78 wrote:

i think i'll keep the potentiometers, because i've never coded a homing with an encoder so this will allow me to improve, and if i never manage to, it's easy to dismantle so i could insert home switches.
 

Nice.
I will try to get my mother to have a look at the pictures, she still uses those machines daily despite being 75 years old.