To provide a material supply mechanism capable of preventing the occurrence of a defect in material feed accuracy by correcting the slippage due to meandering of the material that occurs during the material feeding in the case of the occurrence of warping in the material and correcting the slippage of the material caused by forward and backward oscillation due to an increase in inertia when the material feed is speeded up.

Every time after a blank is punched with a punch and a die by feeding the material pressed and held by rotation of a pair of rolls to a press position, the punch is held inserted into the material and in this state, the pressing and holding of the material are released by detaching the moving roll from the stationary roll and the transverse direction of the material is made to naturally profile a material guide to thereby position the direction of the longitudinal direction of the material again on the basis of the punch and the material guide and thereafter the moving roll is again made to abut on the stationary roll, so as to press and hold the material.