B - Operations – Transporting – 22 – D
Patent
B - Operations, Transporting
22
D
B22D 17/30 (2006.01)
Patent
CA 2513802
The invention consists to add a laser-ultrasonic probe (sensor) into the injection chamber to detect the front of the metal during the filling by vacuum; the detection is independent of the chamber orientation or shape. Any injection chamber angle or cross section can be suitable for this type of detection. Instead of timing, we can measure directly and precisely the level of the metal drawn-up into the sleeve. By installing the laser-ultrasonic detector on a rail support we can detect several level positions according to the amount needed for filling properly the die cavity. The laser- ultrasonic detector is connected to the main controller of the machine and the signal send by the detector is used in the program to close the vacuum circuit and start to move the injection piston. The method of detection is independent of the parameters described in section1. In case of die change the only adjustment is to relocate the detector to the right position and the dosing is good from the first shot, instead of redefining the timing for the new cavity, wasting many shots before finding the proper set of parameters.
Hamad Imad A.
Na
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