Mistake Proofing Winding Direction Stamped Metal Parts

[Cassavid2021]

Hello,

In this example we are stamping metal parts using using metal strip stock and loading the parts onto a reel. The customer requires that the parts be oriented in a particular way. For instance, Stamped Side Up or Burr Side Out. It seems that we are constantly dealing with customer complaints regarding material that was incorrectly wound. This creates problems for the customer because they will have to unwind and rewind the parts in order for the parts to process in their assembly. I feel optimistic that someone out there knows mistake proof methods that have worked. Please share.

Best,

Cass

 

[Miner]

Are the parts still connected coming out of the stamping die? Or loose before they are loaded on a real?

 

[somashekar]

Hello,

In this example we are stamping metal parts using using metal strip stock and loading the parts onto a reel. The customer requires that the parts be oriented in a particular way. For instance, Stamped Side Up or Burr Side Out. It seems that we are constantly dealing with customer complaints regarding material that was incorrectly wound. This creates problems for the customer because they will have to unwind and rewind the parts in order for the parts to process in their assembly. I feel optimistic that someone out there knows mistake proof methods that have worked. Please share.

Best,

Cass

Looks like your customer complaint has to be analyzed and translated into proper purchase specification of your metal strip stock. Your metal strip stock supplier perhaps is not aware of the specific orientation of reeling requirement towards meeting what your customer expects.
Its worth a detailed specification study with your supplier to consider all risks even from your suppllier's supplier of the mother coil he uses....
Good Luck

 

[Cassavid2021]

Looks like your customer complaint has to be analyzed and translated into proper purchase specification of your metal strip stock. Your metal strip stock supplier perhaps is not aware of the specific orientation of reeling requirement towards meeting what your customer expects.
Its worth a detailed specification study with your supplier to consider all risks even from your suppllier's supplier of the mother coil he uses....
Good Luck

Thank you!

 

[Cassavid2021]

Are the parts still connected coming out of the stamping die? Or loose before they are loaded on a real?

Hey, so the parts are still coming out of the stamping die, they are transferred to the "take up" reel. From here they are transported to our plating supplier. It is at our plating supplier where this issue most often occurs. I don't know how to eradicate it.

 

[Jim Wynne]

Are the parts still connected coming out of the stamping die? Or loose before they are loaded on a real?

Most likely something like these:

 

[Miner]

Hey, so the parts are still coming out of the stamping die, they are transferred to the "take up" reel. From here they are transported to our plating supplier. It is at our plating supplier where this issue most often occurs. I don't know how to eradicate it.

So the plating supplier unreels the parts into the plating bath then onto another take-up reel? This will be more difficult since the plating source probably plates a lot of various product for many customers, so it would be hard to add a mistake-proof to their process. Less desirable, but can you attach a metal tag to the start of the reel that has stamped out lettering that says "Wind this side outward"?

 

[Matt's Quality Handle]

Less desirable, but can you attach a metal tag to the start of the reel that has stamped out lettering that says "Wind this side outward"?

Instead of a metal tag, what if you bent a tab inward on the first piece. Put a notch in the reels, and instruct supplier to insert the tab into the notch.

 

[Cassavid2021]

Consider this, you have a roll of ribbon, you have been asked to transfer the ribbon to another roll. You start unrolling your ribbon and attach it to a empty core. What was the beginning of your roll of ribbon will become the end of the transferred ribbon. Lets add in another layer of complexity, if you have ever seen a ribbon up close you may recall the ribbon is not identical on each side. One side tends to be glossy and the bottom tends to be less glossy. Something similar occurs with stamped reeled product. One side is called the stamp side. This side has a roll edge or rounded edge from the cutting in the tool. The other side has a burr side. This side tends to be rough due to the way the die stamps the part. In some cases our customers ask for the burr side to be facing away from the core. In other cases the customer wants the parts oriented with the stamp side facing away from the core. The customer can not process the reels in their assembly process due to the incorrect orientation coming off the reel. The parts are fragile so the customer never wants to rewind them and they shouldn't have to. The problem is twofold, incorrect reeling at the stamping stage and incorrect reeling at the plating stage.