Vacuum Forming Machine Has a Wide Variety of Uses
Vacuum forming machine has a root canal treatment wide variety of uses, from creating plastic toys, to creating form-fitting packaging, to the making of prosthetics for the disabled. The process is widely used in many industries from automotives and robotics to cosmetics, athletic equipment and toy manufacturing. Vacuum forming machine comes in many shapes and sizes. Some are big enough to fill a wall and create multiple parts, such as in the automotive industry dental lab micromotor. Others are no larger than an average table.
In a vacuum forming machine including a machine frame; a forming station having tensioning means for clamping a thermoplastic sheet blank to be deformed into an article, abridge and a positive mold carried by said bridge; the improvement comprising in combination: (a) first guide means for vertically displaceably supporting said bridge in said machine frame; (b) first drive means for vertically displacing said bridge and said positive mold as a unit between an inoperative position in which said positive mold is spaced from a location where the blank is clamped by said tensioning means and anoperative position in which said positive mold is in an operative, contacting relationship with the blank clamped by said tensioning means;
(c) second guide means for vertically displaceably supporting said positive mold on and relative to said bridge pneumatic micro motor; and (d) second drive means for vertically displacing said positive mold with respect to said bridge between said operative position and a transfer position in which the article formed on said positive mold is transferred therefrom.
In general, the machine works by heating a piece of thermoplastic until it becomes flexible and then pressing it onto a mold. A vacuum pump then pulls out all the air so the thermoplastic fits precisely to the mold. There are a variety of thermoplastics used for vacuum forming, depending on the finished product.
Making a single-use tray for packing baked goods doesn’t require much of the plastic: it merely has to retain its shape. However, making something more durable, such as a sign for a store, requires a harder plastic, one able to endure the elements. Materials may include polycarbonate (Lexan), polyethylene and polypropylene, all of which must be heated to the right temperature to become pliable enough to mold.
This article is from http://www.zeta-dental.com.au/