The present invention relates to the technical field of extrusion blow molds, and specifically discloses a mold pressure balancing device, comprising a first floating back plate, a second floating back plate, and pressure regulating devices. The first and second floating back plates are closely attached and fixedly connected by several bolts, forming a sealed oil storage groove filled with hydraulic oil therebetween. Several oil inlet and outlet screw holes are formed on the top surface of the second floating back plate, communicating with the oil storage groove and threadedly connected with sealing bolts. Oil through holes are formed at both ends of the bottom surface of the second floating back plate, communicating with the oil storage groove. Two pressure regulating devices are provided, adjusting the oil pressure via the two oil through holes respectively. The present invention features novel conception and reasonable design, balancing mold pressure and eliminating unremoved flash.
Country Code: CN
Application Number: CN202111440502.2
