New Fashion Design for Plastic U Channel Molding - PP Copo plastic Molette pied F2 – Bolok Mold

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New Fashion Design for Plastic U Channel Molding - PP Copo plastic Molette pied F2 – Bolok Mold Detail:

Part Name	PP Copo plastic Molette pied F2
Product Description	Automatic Unscrewing by rack and hydraulic jack,Bronze guide bush,good wear resistance and lubricity, to ensure the long stability of the mold during high-speed production, and to ensure the life of the mold.Good cooling,Using American Parker, Taiwan TWSNS and other high-quality hydraulic cylinders, air cylinders, reliable quality, long service life, no oil and air leakage.
Export country	Germany
Product Size	80X80X47mm
Product weight	76g
Material	PP GF30 Hostacom EKG2087 T Black
Finishing	charmilles 33
Cavity Number	1
Mold standard	Metric
Mold Size	400X400X520MM
Steel	1.2344
Mold life	1,000,000
Injection	Cold runner Sub gate
Ejection	Automatic Unscrewing Ejectors
activity	2 Sliders Automatic Unscrewing
Injection cycle	55S
Product Features and Application	Automatic Unscrewing part, thread fits smoothly,

Automatic Unscrewing by rack and hydraulic jack

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.
Here’s How It Works:
First the plastic is injected into the tool. After the plastic has cooled, the threaded core starts to unscrew. The unscrewing mechanism works off of a rack and pinion and is powered by a hydraulic cylinder.
The rack turns three sets of gears which then retracts the threaded core into the ejector box.
Once the threaded core is fully unscrewed, the mold opens and the ejector system pushes a stripper plate forward to eject the part.
After the part is fully ejected, the hydraulic cylinder reverses, screwing the threaded core back into molding position and the process repeats.

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