Sign Board self piercing riveting machine

Technical Principle and Procedure: The blank holder first moves downward to pre-press the riveting material to prevent the material from flowing into the die under the rivet force, and then the punch moves downward to push the rivet down to pierce the upper material. Under the joint action of die and punch, the rivet tail opens in the lower metal to form a bell shape for locking and connecting. When riveting two layers of the same metal material, the thicker layer is placed