Inserting Ejector Pins

In this section, you create the ejector pins to eject the plastic part. In a typical mold, the section attached to the fixed side of the press is referred to as the A side. The section attached to the moving side of the press is referred to as the B side.

Ejectors are pins or sleeves that push the plastic part out of the mold. Ejector pins are made of steel and are normally located on the B side of the mold. When the ejection system is activated, the pin pushes the plastic part or runner system out of the mold.

1. On the ribbon, click Mold Assembly tab > Mold Assembly panel > Ejector.
2. Modify the d1 parameter value to 3 mm.
3. Modify the L parameter value to 160 mm.
4. Create six points in approximately the same locations as the points highlighted in the following image.
   
5. Select the arrows in the bottom right-hand corner of the dialog box to expand and view the list of ejectors. Edit the X and Y coordinates as shown in the following table.

   Ejector	X	Y
   EP1	14 mm	48 mm
   EP2	-14 mm	48 mm
   EP3	17 mm	-7 mm
   EP4	-17 mm	-7 mm
   EP5	15 mm	-48 mm
   EP6	-15 mm	-48 mm

6. On the Ejector: Mobile Top dialog box, select the Clearance tab.
7. Change the clearance values for the ejector pins by entering the following values:
   • CH = 7.0 mm
   • CEP = 3.6 mm
   • CB = 3.4 mm
8. On the Ejector: Mobile Top dialog box, click Apply.
9. Click OK in the File Naming dialog box to accept the defaults and create the ejector pins.
10. From the Ejector: Mobile Top dialog box, select the Design tab and click Eject Runner System.
11. Select the end point of the runner sketch, as shown in the following image.
    
12. Click OK on the Ejector dialog box.
13. Click OK on the file naming dialog box to create the ejector pin and close the dialog box.

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