Injection
Molding |
Injection
Molding |
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How to build small injection molding machines, and how to make relatively inexpensive molds for injection molding.
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Secrets of Building a Plastic Injection Molding Machine
Injection Molding is a process used commercially to make thousands of identical plastic parts, quickly and automatically, by using tons of hydraulic pressure to force molten plastic into a steel mold. Each mold might have several cavities in which the plastic parts are formed. A typical large volume automatic injection molding machine is bigger than a car, and uses molds costing upwards of $20,000 each! But now you can make your own usable machine. The limitation? The size of the part: about 1/2 ounce of plastic. Plus it’s not automatic — you use your own muscles (and levers) to apply the force. This book shows how to make a stand-alone injection molding machine capable of turning scrap “milk bottle” plastic into usable products such as plastic knobs. Sources are given for all uncommon parts. Includes information on how to make molds for your machine. By Vincent Gingery. 127 pages. 5 1/2 x 8 1/2. Building a Plastic Injection Molding Machine $16.00 +S&H Order Policy:U.S. addresses only - Credit Cards and PayPal Accepted
Build an Injection Molding MachineAttachment for a Drill Press by Gingery The first book on this page, "Secrets of ...", shows how to build a stand-alone machine, complete with the lever system that applies the force required to inject molten plastic into the mold. This book shows how to make an injection molding setup that uses a large floor model drill press to apply the force, as described by the author: "These plans (are) for a small hobby size injection molding machine capable of molding slightly more than 1/2 ounce of plastic. (.59 ounce to be exact). This amazingly compact machine is designed to be used with a floor model style drill press having a minimum spindle travel of 3". Thus, we refer to it as an injection molding attachment for a drill press. The unit itself measures approximately 12" long x 1-3/4" diameter at its widest point and weighs just 3 pounds. In operation, plastic is melted in the injection barrel of the machine by two 1/4" diameter x 2-1/2" long cartridge heaters. The temperature of the barrel is accurately controlled by a digital temperature controller and thermocouple arrangement. The force required to inject the plastic is provided by the feed mechanism of a drill press. Construction is simple and straight forward, but it will require basic metal working knowledge and the ability to operate a metal lathe and a drill press along with other hand and power tools associated with metal working and machine work in general. Here in this booklet you will receive detailed step by step instructions along with photos and drawings showing how to build your very own injection molding attachment for a drill press. A material list is provided. Suppliers are also identified and you will also receive a basic introduction to plastic injection molding in general." By Vincent Gingery. 48 pages. 5 1/2 x 8 1/2. Build a Plastic Injection Molding Attachment for a Drill Press $14.95 +S&H Order Policy:U.S. addresses only - Credit Cards and PayPal Accepted
Cutting Costs in Short Run Plastics Injection Molding
An excellent companion for your own injection molding machine. "Cutting Costs" refers to using relatively inexpensive aluminum or epoxy molds for injection molding instead of much more expensive steel tooling. Shows how to design inexpensive molds from aluminum and epoxy, with or without steel cores. Dozens of real-life mold designs are illustrated and described. Discusses various types of injection-moldable plastics and why a certain type is used to make a certain part. Written by Pros in the injection molding business that have solved many types of mold making problems for unusual injection molded parts. A line of small injection molding machines (in the $15,000 - $20,000 range) is available from the company that produces this book. By Morgan Industries. 112 pages. 8 1/2 x 11. Short Run Plastics Injection Molding $38.95 +S&H Order Policy:U.S. addresses only - Credit Cards and PayPal Accepted
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