To provide an injection-molding apparatus for producing a metallic fuel molded body with which a plurality of metallic fuel molded bodies can easily be taken out from a plurality of molds attached to a base plate at once without taking out the molds from the base plate or without damaging or breaking the molds.

The injection-molding apparatus is provided with a cylindrical mold 2 having opening hole parts at both ends and a pushing-out member 12 formed so as to be capable to push out from the mold 2 the metallic fuel solidified in the mold 2 by inserting into the opening hole part at the upper end side of the mold 2, and also, composed of an upper covering body 1-1 set so as to cover the upper part of the base plate 1, a pushing-out member shifting means (a fastening member 11 with a screw) for advancing the pushing-out member 12 which is inserted into the opening hole part at the upper end side of the mold 2, further into the mold 2, and a flexible airtight sealing member 14 for airtightly sealing a space formed between the base plate 1 and the upper part covering body 1-1.

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