In this section, you add a sprue bushing and a locating ring to the mold design, and connect the sprue bushing to the runner.
The sprue bushing provides an opening through which plastic melt is injected into the mold. The plastic melt is directed by the sprue bushing through the runners, past the gate, and into the mold cavity. In some mold assemblies, the plastic melt flows directly into the cavity from the sprue bushing. The locating ring fits over the sprue bushing and aligns it with the injector nozzle.
- On the ribbon, click Mold Assembly tab > Mold Assembly panel > Sprue Bushing
. - From the Sprue Bushing dialog box, expand the Type list.
- From the Vendor list, select DME, and then select AGN as the sprue bushing type.
- Modify the following values:
- L = 76 mm
- d1 = 3.5 mm
- In the Offset section of the Sprue Bushing dialog box, change the Z value to -20 mm.
- In the upper-right corner of the graphics window, click Top on the ViewCube to orient the model.
- Activate the Point selection tool on the Sprue Bushing dialog box, and select the end point of the runner sketch, as shown in the following image.
- Click OK on the Sprue Bushing dialog box.
- Click OK on the File Naming dialog box to accept the defaults and create the sprue bushing. Note: This location is for the sprue for a single cavity mold, but it illustrates how to create positions for the sprue bushing and the locating ring.
- On the ribbon, click Mold Assembly tab > Mold Assembly panel > Locating Ring
. - From the Locating Ring dialog box, expand the Type list.
- From the Vendor List, select DME.
- Set the Category to Locating Rings and then select DHR 21 -Type A as the locating ring type.
- Modify the Z offset to 4 mm.
- Click OK on the Locating Ring dialog box.
- Click OK on the File Naming dialog box to accept the defaults and create the locating ring.
- On the keyboard, press F6 to return to the Home View. The sprue bushing and locating ring are shown in the following image.
