Blow-molding machine with pressure cylinder with force equalization means for piston compressor

摘要

Blow-molding machine for blow-molding plastic containers with at least one blow-molding unit for stretch blow-molding preforms by means of compressed air, wherein the blow-molding unit has a force equalization means, such that at least part of the compression force which occurs is compensated for, wherein the blow-molding unit comprises a pressure piston and pressure cylinder.

主权项

1. A method for blow-molding containers, comprising:
docking a preform to a blow-molding unit, which comprises a pressure piston and a pressure cylinder; stretch blow-molding the preform to form a finished container by means of compressed air; undocking the finished container; compensating at least part of the compression force by a force equalization means; wherein the force equalization means comprises one of a passive actuator, an active actuator, and a combination thereof; wherein the passive actuator comprises one of a spring, a pneumatic cylinder, a hydraulic cylinder, and a combination thereof; wherein the active actuator comprises one of an electromechanical cylinder, a linear motor, a hydraulic cylinder, pneumatic cylinder, and a combination thereof; wherein the active actuator is adapted to be combined with a threaded spindle or a recirculating ball screw; and wherein the force equalization means comprises a scissor-type foldable joint.