subject: The Importance Of Plastic Injection Molding & Auxiliary Machinery [print this page] The injection molding process can be compared to filling a jelly donut. A machine prepares a plastic material (the jelly) and injects it into a closed mold that contains a vacant area (like the donut). The molding machine has two basic functions. First, it must prepare the plastic material using heat to melt the plastic, and inject that molten plastic into a closed mold using hydraulic pressure pushing against a plunger device. Second, it must generate enough clamping force to hold the mold closed against the amount of injection pressure being used to fill the mold. When these two activities have taken place, the mold is held closed until the molten plastic cools enough to form a solid skin on the molded part. There are over 200 different parameters that must be established and controlled to achieve proper injection molding of a plastic part. These parameters fall within four major areas: pressure, temperature, time, and distance.
To the troubleshooter, all four areas are important. But, the pressure and temperature areas are the ones most commonly considered during the troubleshooting process. Based on the requirements of any particular plastic material, the pressure must be sufficient to inject the plastic material and to hold the mold closed. In addition, the temperature of the injected plastic and mold must be correctly maintained.
Auxiliary machinery saves lives. Submarines, tanks, elevators, construction equipment and other large industrial machines come equipped with auxiliary machinery in case a part of the machine breaks or fails. Auxiliary machinery is the last line of defense. Auxiliary machinery operates only after primary machinery fails. For example, submarines often feature two engines. If the primary engine fails, the auxiliary engine begins to operate. The second engine is a type of auxiliary machinery. The auxiliary machinery is a kind of backup plan. Auxiliary machinery can be very expensive and it takes up space. Small, cheap or unimportant machinery like a can opener does not come equipped with auxiliary machinery. Auxiliary machinery is usually only present if machinery malfunction would cost lives or a great deal of money. Auxiliary machinery comes in many shapes and sizes. Not all auxiliary machinery is large and heavy like submarine engines. The Navy outfits all ships and submarines with auxiliary refrigeration machinery. This auxiliary machinery keeps engines and food cold in the event that the primary cooling machinery breaks down.
W & Z Machinery Sales offers a full range of quality products including industrial air-cooled chillers. In fact the W & Z Machinery Sales have many great auxiliary machinery products available for all clientele, here is a list of what they have to offer:
* Vacuum Pumps
* Water Cooling Towers
*Water Temperature Controllers
* Material Blenders
* Chillers
*Conveyors
* Dryers
* Granulators
* Hot Oil Units
As you can see W & Z Machinery Sales have a great list of plastic injection molding and auxiliary machinery products in store for you to choose from. If you'd like to see more of what they have to offer within these product categories, you can visit the W & Z Machinery Sales website at http://wzmachinerysystems.com to learn all you need to know about their services and products.
