There are numerous way to export data from SQL Server, please see most(if not all) of the options here - http://www.sqlservercentral.com/articles/Export/147145/
I would personally go with automating it true PowerShell, below you can see how to export it for a single table:
Run in PowerShell:
Import-Module SQLPS
$SQLCommand = “SELECT * FROM [AdventureWorks].[Production].[Products]”
Invoke-Sqlcmd -query $SQLCommand | Export-Csv -Path C:\Export.csv -NoTypeInformation
You can of course work to automate it, prepare a list of the tables you need and go with a for each loop true all of them.