The welding mold can be designed according to conventional requirements: the upper mold should be square (the product is flat, just flat, if the welding mold is too long, it should be slotted), and the lower mold should be connected with two cavities. Pay attention to the consistency of processing (you know this), otherwise it will be troublesome to adjust. Aluminum material can also be used.
In fact, the adjustment difficulty of the machine is slightly higher than that of a single welding die, and there are no other special requirements.