| 摘要 |
A shape-maintaining device for an open end of a tubular material package, used in a pillow-type automatic packaging machine for tubular materials, comprising inner support depressions (21) provided on inner support seats (20). The openings of the inner support depressions (21) face upwards. Each inner support depression has a channel (22). Each of the tubular materials (40) rolled into a ring threads out of the bottom of a channel until it is above the inner support depressions. An inner support (10) is provided inside a tubular material, and each inner support (10) rests in an inner support depression in such a manner that the top thereof faces upwards. A magnet (23) is provided in the lower part of the inner support (10). The contour of the lower part of the inner support (10) is irregular; and the shape of the inner support depression (21) is irregular. A magnet (23) is provided in the inner support depression. A detector (31) is used for detecting the indicator (42) on the tubular material (40). A regulator (30) can move the tubular material (40). The device can always extend the open ends of a roll of tubular material according to a designated shape and maintain the shape of the open ends. |
