Shear type material taking structure for large infusion bottle

The utility model discloses a shear type material taking structure for a large infusion bottle, which comprises a bottom plate, the upper end of the bottom plate is rotatably connected with at least one pair of clamping arms along the length direction, and the side end of the tail part of each clamping arm is provided with an arc-shaped bulge; the top pressing plate is arranged on the outer side of the bottom plate, a groove is formed in the side, close to the tail of the clamping arm, of the top pressing plate, and an arc-shaped piece matched with the arc-shaped protrusion is arranged on the inner wall of the groove. The telescopic component is connected with the other side of the top pressing plate; a notch matched with the neck of a bottle preform is formed in the inner side of each clamping arm; according to the bottle blank inserting and taking device, the problems that in the bottle blank inserting and taking process of the prior art, collision or friction can be generated between a mechanical arm and t