Rectify the axis lines, levelness and elevation of the positioning form, fix it by electric welding on the bear frame and then weld sufficient supports and lifts.
校正定位模板的轴线、水平度和标高，用电焊固定在支架上，并焊上足够数量的支撑和拉杆。
The beneficial effect of the utility model is the accurate positioning of the center of the paper, so as to fix the location of punched holes to the needed positions.
本实用新型的有益效果是：由于能准确的定位纸的中央，从 而将冲孔的位置也固定在所需的位置。
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