PROBLEM TO BE SOLVED: To provide an extrusion mechanism capable of accurately extruding an object to be extruded. An extruding mechanism for extruding an object to be extruded by using the principle of leverage, which has a supporting portion supporting a holding sheet holding the object to be extruded, and an extruding portion extruding the object to be extruded, The push-out portion includes a shaft portion, an arm that rotates about the shaft portion as a fulcrum, and at least one button arranged on the holding sheet side of the arm, and the button is configured to hold the push-out target object. A first rib that is pressed down and a second rib that is located farther from the shaft portion than the first rib are formed, and by rotating the arm, there is a time lag between the first rib and the first rib. The second rib is brought into contact with the extrusion target, and the extrusion target is extruded in stages. [Selection diagram] Fig. 10【課題】正確に押出対象物を押し出せる押出機構を提供する。【解決手段】梃子の原理を用いて押出対象物を押し出す押出機構であって、前記押出対象物が保持された保持シートを支持する支持部と、前記押出対象物を押し出す押出部を有し、前記押出部は、軸部と、前記軸部を支点として回動するアームと、前記アームの前記保持シート側に配置された少なくとも一つのボタンとを備え、前記ボタンには、前記押出対象物を押下する第１リブと、前記第１リブよりも前記軸部から離れた位置に位置する第２リブとが形成され、前記アームを回動させることにより、時間差を置いて前記第１リブ、前記第２リブを前記押出対象物に当接させ、段階的に前記押出対象物を押し出す。【選択図】図１０
