The invention discloses a forward-backward drawing and forming method for a
metal plate soft mould. A lower drawing ring is arranged on the outer surface of a male mould of a mould device in a sleeving mode; a drawing slot is formed in the lower drawing ring; an upper drawing ring is arranged on the upper surface of the lower drawing ring; a charging
barrel is arranged on the upper drawing ring; a force-reducing column is arranged in the charging
barrel; a pressure head is arranged between the force-reducing column and the charging
barrel; and the lower end of the force-reducing column is a
concave surface which corresponds to the male mould. The forming method is mainly characterized in that the upper and the lower drawing rings are oppositely pressed by external force; a
solid particle medium is put into a ring-shaped cavity, the pressure head descends at a speed of v1, and the particle medium is compressed to carry out forward drawing deformation on the plate; meanwhile, under the action of
back pressure P1, the force-reducing column is always in a contact state with the plate, the pressure head continuously descends, and the upper and the lower drawing rings float along with the pressing of the pressure head, wherein a flotation speed is smaller than a pressing speed of the pressure head. According to the invention, by combining
solid particle medium soft mould forming and backward drawing into one set of mould, the invention provides the forward-backward drawing and forming method for the
metal plate soft mould which is simple in structure, is energy-saving and environmentally-friendly, and is formed once.