Assembly for cutting quilts has blades on a blade shaft at equal or different intervals with height adjustment according to the material thickness and a reversing motor for the blade shaft drive for effective cutting to dimensions

摘要

The mechanism to cut the upper side of bulked sewn materials, and especially quilts with drives to advance the material webs, has cutting blades (4) on a cutting blade shaft (3) with distance spacers (5) between the blades (4) of equal or different dimensions. A setting system (1) adjusts the vertical gap between the blade shaft (3) and the underlay. The mechanism to cut the upper side of bulked sewn materials has a motor which rotates the blade shaft (3), with the direction of rotation altered in given phases of the material transport. Preferred Features: For working with materials of a different thickness, the upper roller (2) of the paired ejection rollers and the take-in paired rollers (6) are each adjusted vertically by a spring and a sliding block in a recess. The diameter of the paired ejection rollers (2) is larger than the diameter of the take-in rollers (6), to exert a draw tension on the material. A sensor (8) is at the material take-in shaft (7) to start the rollers (2,6) and the cutting blade shaft (3). On leaving the sensor (8), the direction of blade shaft (3) rotation is reversed against the direction of material movement. The cutting blades (4) on the blade shaft (3) are circular or curved blades, or a combination of both types.