Molten glass cutting apparatus

A molten glass cutting apparatus, comprising:

• a pair of shear blades;
• base portions each provided for a base end part of each of a pair of the shear blades,
• wherein a pair of the base portions are relatively moved toward each other so that tip parts of a pair of the shear blades overlap, and a shearing force by cutting edges of a pair of the shear blades cuts molten glass falling from above,
• each of a pair of the shear blades having projecting portions formed therein on both sides in a width direction and on a cutting edge side, the projecting portions each projecting in a length direction of the shear blade,
• the projecting portions of each of a pair of the shear blades being inclined in a direction opposite to a side where the tip parts overlap so that each projecting portions serves as a guide when the tip parts of a pair of the shear blades overlap by the relative movement toward each other;
• a first support portion provided at the base end part of one of a pair of the shear blades, the first support portion supporting the shear blade with respect to the base portion so as to be rotatable around a first axis extending in the width direction of the shear blade;
• a second support portion provided at the base end part of one of a pair of the shear blades, the second support portion supporting the shear blade with respect to the base portion so as to be rotatable around a second axis extending in the length direction of the shear blade;
• a restriction portion that restricts rotation of the shear blade provided with the first support portion around the first axis so that inclined portions of the projecting portions of each of a pair of the shear blades face each other when a pair of the shear blades are separated;
• and
• an applying portion that applies an elastic force around the first axis for pressing a pair of the shear blades against each other to the shear blade provided with the first support portion.