Keel frame device for supporting planar mask

The invention discloses a supporting plane type mask keel frame device, and relates to the field of sanitary mask production. The technical key point is that a triangular spatial structure and mask clip fixing design is adopted. According to the structure, a plane mask fixing clamping groove (11) and a soft cushion fixing clamping groove (12) are formed in the front edge face and the rear edge face of the edge of a keel frame (00) respectively; a breathable net (20) is embedded in the plane mask fixing clamping groove (11), and a soft cushion (30) is embedded in the soft cushion fixing clamping groove (12). The planar mask (00) is attached to the front face of the keel frame (10), wrapped by a clamping spring (40) and then locked through a buckle (50). Compared with the prior art, the invention has the following advantages and positive effects and application range: (1) the problems of spreading and space forming of a planar mask at the mouth and nose are solved; (2) the planar mask and the keel frame device