I want to say some thing about unscrewing mold with rack. In these molds, the diameter of part, the force of the machine or the rack drive limit the number of threads that can be molded, and the opening movement of the machine or a separate hydraulic or pneumatic actuator can actuate the stroke.
Internal threads are commonly found on plastic parts that screw together, such as bottle caps, drinkware lids and plastic hardware. Due to the delicate nature of threads, molding these parts requires a slightly different approach than your average plastic part. An unscrewing core must be incorporated in the tool in order to eject them from the mold without damaging the threads.
In the past, these parts needed to be manually unscrewed from the core by hand to avoid stripping the threads. The additional labor and time it took to do this added to the part price and lead time. While many injection molding shops still follow this practice, we knew there had to be a better way. for more detail, please contact here, I think we can discuss more
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thanks for your sharing
I understand what you are talking about, but please write more.
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thanks for you share your experience, actually you can write more
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thanks for your comment, you can share some here, so that we can discuss
your experience is very helpful, you should write more :-)
thanks for sharing your experience
thanks for sharing your experience, you are a real mould designer
thanks for your information, I got it
That kind of mold structure is easy to design
thanks for your comment! yes! you are right, actually before doing that, we considered this issue, finally we decide to do that, just because we love our mold industry,
A fascinating discussion is worth comment. There’s no doubt that that you ought
to publish more about this subject, it may not be a taboo
subject but usually people don’t talk about these
issues. To the next! Many thanks!!