Scotland currently top Pool B after their 15-6 win over Georgia - and having picked up a bonus-point in the win over Romania, victory over the Pumas should see them book their place in the last eight.
And with plenty of time to prepare for the clash on September 25 in Wellington, Robinson wants his to guarantee their place ahead of their final pool game against England.
Robinson said: "Our focus now has to turn on to Argentina and understanding what a huge Test match it's going to be.
"We know that if we go and win the game we qualify from the group. That's our mentality, to go out there and win the game.
"It's a good run-in to the Argentina game. We'll be training hard and also give the guys space to have some time off.
"Two games in five days is tough. The players don't experience that at any other time apart from a World Cup.
"It's hard on the players, but I've been pleased with the attitude that's been shown.
"There's a depth in the squad. The 30 players that we have are very much similar players in terms of the standard.
"I think that's helped, we can interchange players and have the same consistency of performance."
Robinson is satisfied that Scotland have accomplished their mission in their opening two games.
He added: "We're pleased with the spell we had in Invercargill. The two games were tough challenges for us; we probably made them tougher than they should have been.
"That's partly how Georgia and Romania have improved, but also an indication of where we are as a side. We have to be at our very best every time we play and we're working hard to improve our ball retention and our ability to score tries."
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