self piercing riveting SPR machine for road sign

self piercing riveting SPR machine for road sign

traffic signs SPR Machine,traffic signs Self Piercing Riveting Machine

Traditionally, the riveting technology of traffic signpost is drilling, riveting and grinding, which requires punching and riveting, which is time-consuming. Here is a quick and firm riveting new technology for traffic signs.

The new technology adopts self piercing riveting technology. Its principles are as follows:

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 in the lower layer; when riveting two layers of different metal materials, the plastic material is placed in the lower layer; when riveting metal and non-metal materials, the metal material is placed in the lower layer.