The advantage of electro permanent magnet clamping  

With the continuous development to shorten mold change time, when deciding upon the clamping process, the molder is confronted by three technology choices.

• Manual-Mechanical – typically for smaller presses.  The mold being modified to accept some kind of clamping ring or spigot.  Specially designed plates are mounted to both platens which through the use of a lever allow the user to locate and clamp the mold securely to the machine.

• Hydraulic/Pneumatic-Mechanical – For all sizes of press.  Takes existing clamp technology and automates .the process eliminate the need for Operator involved.  For best results, Mold bases should be the same size to avoid the need to reposition the clamps.

• Magnetic – Typically for presses greater than 50 ton.  Magnetic Plates are fixed to the machine platens and electronically switched to clamp the mold.

Other advantages over their more conventional competitors include:

• Less Maintenance.  There are no moving parts included, electrical power is only required during the switching process, which depending on the size can take as little as 0.5-3 seconds.

• Greater Accuracy.  Clamp force is uniformly distributed over the entire mold base surface,.

                                                 the electro permanent magnet real photo