Environment friendly metal mechanical password lock cylinder capable of setting repeated password keys

An environment friendly metal mechanical password lock cylinder capable of setting repeatedly password keys, comprising:

• a plurality of password rebound leaves including a No. A, a No. B, a No. C, a No. D, and No. 0 password rebound leaves, wherein each of the No. A, the No. B, the No. C, the No. D, and the No. 0 password rebound leaves includes:
• a password rebound leaf body,
• at least a first groove, second, and third grooves disposed on a top of a respective password rebound leaf body in sequence,
• a push reset portion disposed on a side portion of the respective password rebound leaf body and including a reset plane, a push portion and a limit point which are connected with each other in sequence,
• a “Z”-shaped button spring access hole disposed in a center of the respective password rebound leaf body, and
• a button spring mounted in the “Z”-shaped button spring access hole, wherein an included angle between a horizontal plane and the push portions of the No. A, the No. B, the No. C, and the No. D password rebound leaves is 20 to 70 degrees, the push portion and the limit point of the No. D password rebound leaf form a plane structure, and the push reset portion of the No. 0 password rebound leaf only includes a reset plane,
• a label panel,
• a fastener locking plate,
• a positioning plate fixedly connected with the label panel and with the fastener locking plate disposed therebetween,
• a fastener reset plate slideably disposed on the positioning plate,
• an axis panel matched and connected with the label panel, and
• a control plate slideably disposed on the axis panel;
• wherein the password rebound leaves run through the label panel and the positioning plate in sequence and corresponds to the control plate and at least one password rebound leaf in the plurality of password rebound leaves is provided with one or more positioning blocks matched with the control plate.