Views: 0 Author: Site Editor Publish Time: 2020-09-04 Origin: Site
The workpiece is rotation body and a hole is in its centre, then, from experience the suitably oriented and deformed, workpieces canbe produced by application of the umbrella gate or diaphragm gate as Fig6.25. The two half pieces are completely identical, both have two hooks and two holes, hence their matching would not present a problem during assembly.
Fig.6.52 is an example for removal of the residual material from the sub-parting line and taking the workpiece out of the nest from the main parting line, the opening sequence of which requires some sort of control.
Operation: when mobile table moves down, the lower clamping plates 17 and 18 start to move together with the mobiletable of the machine, the nose of hook 9 is engaged with the pin 7 fixed into intermediate plate 6, so the sub-parting line opens first between plates 2 and 5.the undercut machined into plate 2 at the end of runners breaks the residual material from the workpiece and the sphericity-puller 29 draws sprue(or the residual material) out of the sprue bush 31 at this point.
When the mold opens further, the lower dome of bar 27 fixed to the stationary plates I and 2 presses the end of adiusting screw 33 arranged on the lower part of hook 9, and swings around shift 12 and out the pin 7, so the intermediate plates 5 and 6 stop, since its further movement is stopped by limit screws 3
The The main parting line(between plates 8 and 10)opens when the mobiletable moves further sphericity-puller is fixed to mobile frame 10 and supporting plate 23, the residual material is detached from the sphericity-puller 29 and falls away
Finally the ejector bar 19 engages the stop of the machine and presses the ejection system 13 and 14 up. The workpiece is pushed out of the nest 11 and hole-forming pin 21 by the jector pins 22. The forming pin 21 forming the center hole of the workpiece is fixed to the hook-forming insert 24 and plate 23
The cooling water circulates around (or above)the cups, hence the cooling is efficient, the O-rings 26 have to be implanted carefully into the nests to avoid leakage of the cooling water from the mold. It is advisable to compress the two halves when these two workpieces are still hot directly Features of the object and the mold: The material flows in from the side to the V-belt pulley assembled of two parts, then the relatively thick walls would probably not weld together opposite the point of inlet, and conceivably the shape and strength of the hooks clamping together the halves will not be satisfactory either
