Yarn winder: convert the existing chain drive to more robust mechanism

  • #1
yarnspinner
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I have an electrically powered yarn winder (that uses the equivalent of a bathroom fan motor) to drive a spindle which holds and turns the yarn cone, and simultaneously drives a chain mechanism which moves the yarn holder parallel to the yarn cone in a back and forth motion along the parallel axis to create a cross winding of the yarn on the cone.

My problem is that the chain often jumps off the gears driving it, either due to wear on the gears, stretching of the chain, or stress on the yarn holder when the yarn feed is interrupted, or the yarn comes under stress from slow feeding (becomes taut).

I am wondering if there is a different, hopefully better, way to convert the rotary motor motion to reciprocating linear motion, in a way that is more robust, by which I mean it is less susceptible to damage and more reliable. It does have to cope with sudden starts and stops.

Hoping for some suggestions here! Thanks in advance.
 
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  • #2
Before switching to a completely different mechanism, maybe consider adding an idler wheel or chain tensioner sprocket to maintain a proper tension on the chain:

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https://blackaceparts.com/chain-tensioner-idlers
 
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  • #3
The chain is only one part of the mechanism, the part you notice because it fails.
What size are the two roller-chain sprockets? That sprocket ratio sets the angle of the diagonal yarn on the spool.
 
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  • #4
berkeman said:
Before switching to a completely different mechanism, maybe consider adding an idler wheel or chain tensioner sprocket to maintain a proper tension on the chain:
My first reaction. This isn't a heavy duty machine. Could it be out of alignment?

It's hard to comment about this without more info about your facilities and capabilities and the materials used for the job. Perhaps a photo?
 
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  • #5
yarnspinner said:
I have an electrically powered yarn winder ...
What is the make and model?
Do you have a picture?
 
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