Necking die with rollers

The utility model relates to a necking die with a roller, which comprises an annular machine head, a necking piece, a fixing piece, a rolling piece and a driving piece, the necking piece is arranged on the annular machine head through the fixing piece, the rolling piece is arranged on the necking piece to roll an aluminum flat tube, and the driving piece is arranged on the necking piece to drive the necking piece. The necking piece and the rolling piece are matched with each other, so that the aluminum flat pipe is prevented from bulging in the necking process, the aluminum flat pipe can be conveniently and directly inserted into a liquid collecting pipe, time and labor are saved, and the production efficiency is improved. 本实用新型涉及一种带滚轮的缩口模具，包括，环形机头、缩口件、固定件、滚压件和驱动件，所述缩口件通过固定件设置于所述环形机头上，所述滚压件设置于所述缩口件上，滚压铝扁管，所述驱动件设置于所述缩口件上，驱动缩口件。通过缩口件和滚压件之间相互配合，以避免在对铝扁管缩口时其中部出现鼓起，便于将其直接插入集液管内，省时省力，提高了生产效率。