摘要：【中文】本发明公开了一种精密注塑模具保护机构，所述模具包括底板、移动板及多根导柱，所述移动板设置在底板的前方，所述导柱贯穿底板和移动板，并且导柱的底端固定在底板的后端面，所述移动板沿导柱的延伸方向进行滑；包括用于支撑移动板的保护机构，底板在移动板正投影以外的区域形成台肩，保护机构安装于台肩上；所述保护机构包括支架及轴承，所述台肩上开设有固定槽，所述支架固定于安装槽中，支架上开设有安装槽，所述轴承转动设置于安装槽中，并且轴承的外切面抵在移动板上，当移动板沿导柱方向进行滑移时，移动板的速度方向与轴承相切于移动板的切点的速度方向相同。本发明能减轻或消除模具自重对导柱及镶件产生的磨损，延长模具的使用寿命。 【EN】The invention discloses a precision injection mold protection mechanism, wherein a mold comprises a bottom plate, a movable plate and a plurality of guide pillars, the movable plate is arranged in front of the bottom plate, the guide pillars penetrate through the bottom plate and the movable plate, the bottom ends of the guide pillars are fixed on the rear end surface of the bottom plate, and the movable plate slides along the extension direction of the guide pillars; the protection mechanism is used for supporting the moving plate, a shoulder is formed on the bottom plate in a region outside the orthographic projection of the moving plate, and the protection mechanism is installed on the shoulder; the protection mechanism comprises a support and a bearing, a fixing groove is formed in the circular bead, the support is fixed in the installing groove, the installing groove is formed in the support, the bearing is rotatably arranged in the installing groove, the outer tangent surface of the bearing abuts against the moving plate, and when the moving plate slides along the guide pillar direction, the speed direction of the moving plate is the same as the speed direction of the tangent point of the moving plate tangent to the bearing. The invention can reduce or eliminate the abrasion of the dead weight of the die to the guide post and the insert and prolong the service life of the die.