Blow one’s top: dash off article, appending name (3,3,3,6)
I believe the answer is:
fly off the handle
'blow one's top' is the definition.
(both can mean to get very angry)
'dash off article appending name' is the wordplay.
'dash' becomes 'fly' (dash can mean to fly away).
'article' becomes 'the' (the definite article in English).
'appending name' becomes 'handle' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'fly'+'off'+'the'+'handle'='FLY OFF THE HANDLE'
(Other definitions for fly off the handle that I've seen before include "Lose one's temper" , "react angrily" , "Robin perching on spade may" , "See red" .)