| 摘要 |
1523661 Opening bag-bottoms GARTEMANN & HOLLMANN GmbH 8 Jan 1976 [8 Jan 1975] 662/76 Heading B5D An apparatus for opening bag bottoms on lengths of tubular material 2 movable along a planar conveyer path, comprises a pair of rotatable opening tools 1, each of which is rotatable in a circle 11 in a plane inclined relative to the conveyer path and is mounted for adjustable pivotal movement about an axis 6a normal to the plane of the conveyer path, the extension of axis 6a on to said plane intersecting the major axis of an ellipse formed by projecting the tool circle of rotation 11 on to said plane. The pivotal adjustment of the tools 1 permits setting-up of the apparatus to achieve the best possible operating conditions for all sizes of tubular lengths within a selected size range. |
