Injection Molding Process Components

The video tutorial explains the injection molding process, starting with the raw materials, which are plastic beads or pellets. It describes the components of an injection molding machine, including the hopper, injection cylinder, screwdrive motor, barrel, nozzle, control panel, platins, mold, and clamp mechanism. The process involves melting plastic in the hopper, moving it through the screw, and injecting it into a mold. The fill phase is followed by the packing phase, where additional plastic is compressed into the mold until it freezes, trapping the plastic inside.

What is the primary function of the hopper in an injection molding machine?

• To cool the molded plastic

• To hold the raw plastic material

• To melt the plastic material

• To shape the final product

Which component holds the mold in place during the injection molding process?

• The nozzle

• The screwdrive motor

• The platins

• The control panel

Which component is responsible for moving the plastic material forward in the injection molding machine?

• The nozzle

• The control panel

• The rotating screw

• The clamp mechanism

What is the role of the screwdrive motor in the injection molding machine?

• To eject the final product

• To rotate the screw

• To control the temperature

• To hold the mold

How is the plastic material melted in the injection molding process?

• By the control panel

• By the rotating screw

• By the nozzle

• By the mold

During which phase does the screw act as a plunger to push melted plastic into the mold?

• Cooling phase

• Fill phase

• Packing phase

• Ejection phase

What percentage of the cavity volume is typically filled during the fill phase?

• 100%

• 90-95%

• 70-80%

• 50-60%

What is the purpose of the packing phase in the injection molding process?

• To compress additional plastic into the cavity

• To eject the molded part

• To cool the plastic

• To remove excess plastic

What happens to the plastic in the gates during the packing phase?

• It melts

• It evaporates

• It freezes

• It expands