Coarse threaded, multi-spindles are widely used for the automatic unscrewing the thread-forming workpiece. The spindle 2 is generally arranged in the centre line of the mold as hown in Fig. 6.57. T...

In Fig. 6.50, the sub-parting line I is for takeing the residual material, and the main partir line II is for takeing workpiece. The side hook 2 can be lifted out with a control hook 4 fixed to the...

Advantage: The mold is operated fully automatically. The ejection is completely safe.The workpieces fall into the box by their own weight. Disadvantage: preparation of the tapered ejector pins a...

The internal hole of the workpiece is formed by hole-shaping mandrel 4 fixed to the stationary fixing plate 2. This mandrel is fairly long and when the mold is opened, the sudden cooling workpiece ...

​The stationary eiectoro plate can be actuated with side hooks as shown in Fig. 6. 45, and the side hook 17 can be lifted out with the nose of a control hook 15 fixed to the stationary clamping pla...

Fig. 6.41 is a configuration of the stripper plate of a mold actuated by a pneumatic cylinder. The stripper ram I connects the mold and cylinder. The one end of stripper ram is fixed to the station...

The ejector system is built into the mobile part of injection machine. For some workpieces, the shape of their external and internal surfaces makes it difficult to decide whether the workpiece rema...

The two ejection systems shown in Fig. 6.39 consisting of plates 12, 13, 16 and 17 start at the same time, because the lock 7, pushed by spring 6 and screw 5, is engaged with the up groove of pin 4...

Two-step Ejection by Swing Bar The lower system starts, the upper system begins the ejection only in the second step as Fig 6.36 shows. The mold opens, while the ejector bar 7 which engages the sto...