Die opening and closing mechanism and pipe die device

The utility model relates to the technical field of prestressed concrete cylinder pipe production, in particular to a mold opening and closing mechanism and a pipe mold device. The mold opening and closing mechanism comprises a first mold closing body, a second mold closing body, an elastic supporting piece and a deformation driving piece, the elastic supporting piece is connected between the first mold closing body and the second mold closing body; the deformation driving piece is connected with the elastic supporting piece and can drive the elastic supporting piece to expand or contract in the preset direction so that the first mold closing body and the second mold closing body can be opened and closed in the preset direction. The pipe die device comprises the die opening and closing mechanism. According to the mold opening and closing mechanism and the pipe mold device, the first mold closing body and the second mold closing body are driven to be opened and closed relatively through expansion and contracti