A process for the preparation of an expansible sleeve and the expansible sleeve

摘要

The present invention relates to the preparation of an expansible sleeve (20) for an expansible anchor (12). The invention proposes to a strip of sheet metal (20) by means of punching is not a continuous transverse slots (24) sprags (26) and a to be punched from a diameter of the expansible anchor (12) number sprags (26) of the sheet metal strip (22) to be separated and by bending to the expansion sleeve (20) to transform. The present invention has the advantage that the sprags (26) on the sheet metal strips (22) is independent of a diameter of the expansible anchor (12) are stamped.