(Tasks) provides an in-mold imprinting device detachable even after repeated rotation of the indicator element in order to switch the display does not take engraved lock (Lock) in rotation.
And (solving means) displays a substantially cylindrical shape to be fitted in a molding mold outer shell body and the display outer shell body and the surface member angular displacement possible is fitted around the axis within the lid that is screwed into the bottom of the displayed outer body member, is made by a spring for applying a force directed downward in the indicator body, shown as outer shell body and the stamping device consisting be engraved display unit is formed on the surface of the indicator member, the indicator body is surface portion, and the indicator unit working on the mold inner surface and a positioning portion extending downward from, and a shaft portion extending downwardly from the positioning portion, the shaft has a threaded portion on the lower portion, the spring, and the engagement part walk being engaged in the indicator body, fixed to the cover body It has a fixing part, the pitch and the pitch of the threaded portion of the spring-mold imprinting removable device characterized in that the same, and the walking engages the fitting portion and the threaded portion of the fitting portion around.