Here’s a 4” one, but you can always enlarge it before it hits the printer:
http://needlesnknowledge.blogspot.co...ilt-block.html
This site has a great tutorial plus free foundation patterns:
https://www.generations-quilt-patter...-patterns.html
And yet, another:
http://www.getcreativeshow.com/semin..._pineapple.htm
Go to Pinterest.com and/or Google.com and type “free pineapple block paper piecing patterns” . . .
Hope these and others you'll find get you just what you're looking for.