Design considerations for push rod stripping mechanism.
(1) the location of the push rod because of the push rod and molded parts contact area is small, easy to deformation, plastic cracking, and traces of push rod in the plastic parts, so the launch position should be located in the plastic parts strength good parts, the surface of the appearance quality is not high, the push rod should be located in stripping resistance big or near stripping resistance parts, but should pay attention to the strength of the putter around the hole, at the same time we should pay attention to avoid the cooling water channel and the side core-pulling mechanism, so as to avoid interference occurs.
(2) the length of the push rod is determined by the mold structure and the launch distance.Push rod end face and cavity surface level or slightly higher.
(3) the combination of push rod and putter hole is generally adopted with H7 / f6, and the length is taken (1.8 ~ 2.0) d, and can be expanded by 0.5~1mm in addition to the length.
(4) the number of putter bars should not be too much in the premise that the quality of the plastic parts and the stripper is smooth, so as to simplify the mold and reduce its influence on the surface quality of the plastic parts.