| 摘要 |
<p>At least a pair of shear blades (1,2) cuts a stream of viscous molten glass (30) descending from a glass feeder. The paired shear blades (1,2) continuously move, while retaining a substantially horizontal position, vertically along looped paths symmetrical to each other on opposite sides of the descending stream of molten glass. When viewed in a plane, each loop contains the forward motion of each blade toward the center of the descending stream of molten glass, the crossing of the cutting edges (1a, 2a) provided on the two facing blades, and the retreat of each blade away from the center of the glass stream. The cutting of glass stream begins at the end of the forward motion of the shear blades and ends when the cutting edges provided on them have crossed each other. This permits minimizing the area and time of contact between the shear blades and the descending stream of molten glass.</p> |
