Positioning mechanism for punching outer frame of filter

The utility model relates to a positioning mechanism for punching a filter outer frame, which comprises a reference rod horizontally fixed on the surface of a base and provided with scales; a positioning block slides on the reference rod, a positioning piece for fixing the positioning block is arranged on the reference rod, an adjusting block is arranged on the positioning block in a sliding mode in the direction perpendicular to the reference rod, an adjusting piece for fixing the position of the adjusting block is arranged on the adjusting block, and a clamping assembly is further arranged on the adjusting block for temporarily fixing the filter frame, so that manual operation is effectively reduced; and the punching precision is improved. 本申请涉及一种过滤器外框打孔用定位机构，其包括：基准杆，基准杆水平固定在基座表面，基准杆上设有刻度；基准杆上滑动有定位块，基准杆上设有用于固定定位块的定位件，定位块上沿着垂直基准杆的方向滑动设有调节块，调节块上设有用于固定自身位置的调节件，调节块上还设有夹持组件对过滤框进行临时固定，从而有效减少人力操作，提高打孔的精准度。