An electric mold opening and closing device and method for an extrusion blow molding machine based on electromagnetic attraction of a mold.
In the device, a cavity half-mold assembly and a core half-mold assembly are integrally mounted on a linear guide rail of a frame through a first slider and a second slider arranged thereon; a bevel gear box and a servo motor are fixedly mounted on a bevel gear box mounting plate of the frame.
One end of a first ball screw is connected to a first output shaft on the bevel gear box, and the other end is connected to a first lead screw nut on the cavity half-mold assembly; one end of a second ball screw is connected to a second output shaft on the bevel gear box, and the other end is connected to a second lead screw nut on the core half-mold assembly.
An output shaft of the servo motor is connected to an input shaft of the bevel gear box.
The servo motor controls the cavity half-mold assembly and the core half-mold assembly to realize mold clamping and mold opening, and the electromagnetic attraction effect is utilized to avoid the generation of gaps between the cavity half-mold and the core half-mold under the action of compressed air after mold clamping.
The invention has the advantages of compact structure, low cost, stable and reliable mold clamping process, and is convenient for industrial modular application.
Country Code: CN
Application Number: CN201910725482.X
