Automatic triangular plate folding mechanism

The utility model discloses an automatic triangular plate folding mechanism which comprises a triangular plate placing plate, a triangular plate feeding device, a triangular plate sucking and carrying device, a first triangular plate folding device, a second triangular plate folding device and a third triangular plate folding device. The first triangular plate folding device is used for folding a half part of a triangular plate to the surface of the other half part of the triangular plate along the symmetric line of the triangular plate. The second triangular plate folding device is used for folding one end, close to opposite angles on two sides, of the triangular plate upwards to the surface of one end, far away from the opposite angles on two sides, of the triangular plate by taking a connecting line of the opposite angles on two sides of the triangular plate as a boundary; the first material pressing device and the third material pressing device are used for pressing one end of a braid on one side of the s