Pressing roll device and pressing method

A pressing roll device, in which a unit cell passes between an upper roll and a lower roll, the pressing roll device comprising:

• the lower roll;
• the upper roll;
• a lower mount on which the lower roll is mounted and which is fixed in movement;
• a bracket having an internal space, and positioned above the lower mount;
• an upper mount on which the upper roll is mounted and which is restricted by the bracket so as to ascend and descend by the bracket;
• and
• a stopper disposed between the lower mount and the upper mount so that the lower roll and the upper roll are spaced apart from each other,
• wherein the upper mount comprises a head part protruding from a top surface of the upper mount,
• wherein the head part comprises a body portion protruding vertically from the top surface of the upper mount and an expansion portion, the expansion portion having a diameter greater than the body portion, at an upper end of the body portion,
• wherein the head part is coupled to the bracket and the expansion portion of the head part is accommodated in the internal space of the bracket so that separation of the expansion portion is restricted by a clamping portion of the bracket,
• wherein, the upper mount ascends and descends in a state in which the head part is restricted and travels within the internal space between an upper surface of the internal space and a lower surface of the internal space which corresponds to a range in which a bottom surface of the clamping portion contacts the top surface of the upper mount and a top surface of the clamping portion contacts a bottom surface of the expansion portion, respectively,
• wherein the body portion includes at least two parts that extends parallel to each other,
• wherein the two parts of the body portion are respectively connected to the upper mount, and
• wherein the upper mount includes a gap between locations where the two parts of the body portion are respectively connected to the upper mount.