The gripper quick-change jaw system, comprising a gripper finger, a locking pin and a jaw, wherein one end of the gripper finger is adapted to be anchored to the gripper and the other end is free and adapted to interact with the jaw, the gripper finger includes at least one hole which is provided for the locking pin and in which the locking pin can move along said hole, wherein the locking pin comprises an elongated part, a head for transmitting pressing force to the locking pin, a spring element that is positioned around the elongated part of the locking pin, a locking head, wherein the jaw comprises a part for gripping a preform or an article and a part for attachment to the gripper finger wherein the part (3.2) intended to be attached to the gripper finger comprises a cavity (3.2.1), which comprises: a recess (3.2.2) for the movement of the gripper finger through the jaw; a recess (3.2.3) intended to place and guide the locking head (2.4); a partition (3.2.4) between the recess (3.2.3) for placing and guiding the locking head (2.4) and the recess (3.2.2) for the movement of the gripper finger through the jaw, where the partition (3.2.4) of the jaw's cavity (3.2.1) comprises a first cavity (3.2.5) for movement of the elongated part (2.2) of the locking pin extending between the gripper finger and the locking head (2.4) to the locking position, and a second cavity (3.2.7) for inserting the locking head (2.4) in the position of locking the jaw with the gripper finger by means of the locking pin, wherein, after insertion, the edges of the peripheral flanks of the locking head (2.4) rest against edge (3.2.6) of the second cavity (3.2.7) of the partition (3.2. 4). a gripper finger, a locking pin and a jaw, wherein one end of the gripper finger is adapted to be anchored to the gripper and the other end is free and adapted to interact with the jaw, the gripper finger includes at least one hole which is provided for the locking pin and in which the locking pin can move along said hole, wherein the locking pin comprises an elongated part, a head for transmitting pressing force to the locking pin, a spring element that is positioned around the elongated part of the locking pin, a locking head, wherein the jaw comprises a part for gripping a preform or an article and a part for attachment to the gripper finger wherein the part (3.2) intended to be attached to the gripper finger comprises a cavity (3.2.1), which comprises: a recess (3.2.2) for the movement of the gripper finger through the jaw; a recess (3.2.3) intended to place and guide the locking head (2.4); a partition (3.2.4) between the recess (3.2.3) for placing and guiding the locking head (2.4) and the recess (3.2.2) for the movement of the gripper finger through the jaw, where the partition (3.2.4) of the jaw's cavity (3.2.1) comprises a first cavity (3.2.5) for movement of the elongated part (2.2) of the locking pin extending between the gripper finger and the locking head (2.4) to the locking position, and a second cavity (3.2.7) for inserting the locking head (2.4) in the position of locking the jaw with the gripper finger by means of the locking pin, wherein, after insertion, the edges of the peripheral flanks of the locking head (2.4) rest against edge (3.2.6) of the second cavity (3.2.7) of the partition (3.2. 4). a recess (3.2.2) for the movement of the gripper finger through the jaw; a recess (3.2.3) intended to place and guide the locking head (2.4); a partition (3.2.4) between the recess (3.2.3) for placing and guiding the locking head (2.4) and the recess (3.2.2) for the movement of the gripper finger through the jaw, where the partition (3.2.4) of the jaw's cavity (3.2.1) comprises a first cavity (3.2.5) for movement of the elongated part (2.2) of the locking pin extending between the gripper finger and the locking head (2.4) to the locking position, and a second cavity (3.2.7) for inserting the locking head (2.4) in the position of locking the jaw with the gripper finger by means of the locking pin, wherein, after insertion, the edges of the peripheral flanks of the locking head (2.4) rest against edge (3.2.6) of the second cavity (3.2.7) of the partition (3.2. 4).