Mold assembly

A mold assembly comprises:

• an upper positioning seat, an upper panel disposed in the upper positioning seat, a lower positioning seat, a lower panel disposed in the lower positioning seat, a first air cylinder disposed on a side of the lower positioning seat, a second air cylinder disposed on a bottom of the lower positioning seat, a third air cylinder disposed on a side of the upper positioning seat, and a fourth air cylinder disposed on a top portion of the upper positioning seat,
• a lower plate disposed on a bottom of the upper panel,
• an upper plate disposed on the lower panel,
• the lower plate engaging with the upper plate,
• the lower plate having a first male mold and a first female mold,
• the upper plate having a second male mold and a second female mold,
• the upper positioning seat having two slide grooves receiving two laterals of the upper panel,
• the lower positioning seat having two slide recesses receiving two laterals of the lower panel,
• the first male mold matching the second male mold and the second female mold,
• the first female mold matching the second male mold and the second female mold,
• an air inlet rubber valve connected to the first female mold, and
• a blowing device connected to the air inlet rubber valve.