Method for monitoring the production of blow molded plastic container to detect a defect in any one of the containers.And the apparatus to monitor the production of blow molded plastic container formed by the introduction of a fluid pressure in an inside of a preform in a mold cavity

摘要

Method for monitoring the production of blow molded plastic container to detect a defect in any one of the containers.And the apparatus to monitor the production of blow molded plastic container formed by the introduction of a fluid pressure in an inside of a preform into a cavity of the mold. A method and apparatus for monitoring the production of plastic containers produced by the blow molding (20) includes a colunador (26) and a sound detector (24) responsive to a sound of a defect in the flUido pressurization that escapes from a container that is being formed in a molding cavity (14).The colunador is effective to filter the sound of defect from the noise of the environment.An output signal generated by the sound detector is processed to generate a control signal used for rejecting a defective container.Preferably,The open end of the colunador is positioned between 20 and 150 198 198 from the loading station of the pre form on a turntable (12) of the blow molding machine.