Trying to use multiple inputs of the same type into a form to update the relevant field in a table

I hope it's a basic prolem.... we're creating an inventory system for our plant. The scanner we have can scan either a single dataset then store it and then transfer it (I have a database that works for that.... the update simply sends the stored data to the textbox which is linked to my table)....

My problem:
The scanner can also store multiple inputs and hold them (say 10 at a time) so that it's more efficient.... however I don't know how to adapt my form to take in multiple datasets in the same 'textbox' or some variation of and then update the table with all relevent records

Example:
Currently:
Scanner - aaaddd
stored
uploaded to textbox [aaaddd]
saved
table gets updated to include [aaaddd]

Issue:
Scanner - a1 a2 a3 a4 a5 a6
stored
upload to............ single text box fails
save
table gets updated with a1 a2 a3 a4 a5 a6

**The scanner stores them as new rows ... ie:
[a1
 a2
 a3
 a4]