The difficulty in demolding plastic pipe fittings is caused by PVC pipe fitting mold and improper process factors, and in most cases it is caused by improper design of the demolding mechanism of PVC pipe fitting molds.
There is a hooking mechanism in the demolding mechanism, which is responsible for hooking out the cold material at the main, runner and gate
The ejector mechanism in the PVC pipe fitting mold uses ejector rods or top plates to eject products from the movable mold.
If the stripping angle of the PVC pipe fitting mold design is not enough, it will be difficult to demold. The pneumatic ejection device must have sufficient pneumatic pressure when demolding, otherwise it will be difficult to demold.
In addition, the parting surface core-pulling device, threaded core-removing device, etc. are all important parts in the mold release structure of PVC pipe fittings, and improper design will cause difficult demolding. Therefore, in the mold design, the demolding mechanism is a part that must be paid attention to.
In terms of process control, too high temperature, too much feed, too high injection pressure, and too long cooling time will cause demolding difficulties. The debugging between the injection molding machine and the mold is also very important. We will conduct a large number of tests before the PVC pipe fitting mold leaves the factory to ensure the effect of the mold in the actual production process.
Key words: PVC pipe fitting mold
Post time: Nov-27-2021