Pulp moulded plate and preparation apparatus thereof

摘要

An apparatus for the preparation of pulp molded plate includes a press and a three-piece mold including an upper die (1), a surrounding frame (2) and a lower die (3), wherein one of the dies is a moving die and the other is a fixed die, and lower die is always within the press, and moves in relation to the upper and lower dies. The apparatus also includes a rigid matrix and a flexible punch with a retractable die bar, which are installed respectively on the upper die and lower die, so as to prepare a heterotypic pulp-molded plate with a convex part. Also disclosed is a pulp molded plate prepared by this preparation apparatus.

主权项

1. An apparatus for producing pulp molded plate, comprising a press machine and a three-piece mold, the three-piece mold comprises an upper mold, an enclosing frame, and a lower mold to form a mold cavity with variable capacity; the molding surface of the upper mold is provided with a drain groove and is covered by a wire mesh, the molding surface of the lower mold is provided with a drain groove and/or hole and is covered with a wire mesh, wherein:
one of the upper mold and the lower mold is a movable mold, the other is a fixed mold, and the lower mold is always within the enclosing frame; the enclosing frame is supported by two or more plunger-type cylinders or piston-type cylinders fixed to the press machine, and which is movable relative to the upper mold and the lower mold; the apparatus further comprises two seal grooves and seal rings inlaid in the seal grooves, the seal rings are arranged on the contact surface between the opening of the enclosing frame and the upper mold, and one or more guiding water grooves are arranged between the two seal grooves; in a pressed state of the upper mold and the enclosing frame, the drain groove on the molding surface of the upper mold is extended to above the guiding water grooves, so as to form a channel with the guiding water groove.