According to the announcement of the State Intellectual Property Office, Shacman Co., Ltd. applied for a "one rear enclosure to select the pore air switching mold structure", and the public number CN117655183A.

Patent abstract shows that the invention discloses a rear enclosure to select the pore gas switching mold structure, including the first mold and the second mold. The third punching group, the fifth rushor group, and the sixth rushing group, the first rush group, the second dumping group, the third dumping group, the fifth dumping group, and the sixth dumping group The first gas control system control, the second mold connection is the fourth rush group, the seventh rush group, and the eighth rush header, the fourth rush group, the seventh dumping group, and the eighth rush header The group is controlled by the second air control system. By setting up the first mold and the second mold, the present invention combines the holes of the original five products on the two molds, reducing the required molds and greatly reduced the manufacturing cost.