Can changer for a spinning preparation machine and method for changing cans

Abstract

The invention relates to a can changer for a spinning preparation machine, preferably for a drawing frame, carding machine, or comber, wherein the can changer comprises at least two can gripper devices by means of which one can (1) each can be brought between a first position and a second position, wherein each can gripper device comprises a contact surface (2) for the can (1) and a retaining element (3) that is displaceably mounted relative to the contact surface (2). According to the invention, each retaining element (3) can be displaced by means of an actuating device (4) between a closed position, in which a can (1) can be fixed by means of the retaining element (3) and the associated contact surface (2) of the associated can gripper device, and an open position in which the can (1) is not fixed. The invention further relates to a method for changing cans (1) on a spinning preparation machine, preferably a drawing frame, carding machine, or comber, by means of a can changer, by means of which the cans (1) are brought between a first position and a second position during the can exchange, and characterized in that two cans (1) each are fixed relative to the can changer by means of a common actuating element (9) prior to the can changing.