Roller for guiding and/or stretching the width of a moving web of material

摘要

The invention relates to a roller (1) for guiding and/or stretching the width of a moving web (2) of material. The roller (1) is provided with a central support body (5). Roller sections (3) are supported on the support body. Here, the roller sections (3) are supported so as to pivot around a pivot axis (4). The pivot axis extends transversely relative to the axis (1') of the roller. The roller sections are connected operatively to an actuating device (6) determining the pivoting positions of the roller sections. In order to transfer pivoting movement accurately from one roller section (3) to the other roller section (3), in each case, at least one bearing on two sides of the pivot axis and contacting the roller sections (3) is arranged between the two adjacent roller sections (3).