Several factors go into determining the value of plastic injection molding machinery when selling used equipment. Our guide is designed to help you identify the key components of the appraisal process, as they pertain to your particular injection molding machine.
Understanding Basic Terms and Common Specifications for Injection Molding Equipment
Clamp Force. Reported in US Ton. Also known as “clamping pressure” or “clamp tonnage”. This is the maximum holding force between the two platens and is what holds the mold cavity together.
Tie bar Space. This is the maximum area that a mold would have the ability to fit in. It is the distance between the horizontal tie-bars.
Platen Size. The platen is like a table that holds the mold. The mold is bolted or clamped on to the platen.
Maximum Daylight. This is the maximum distance that the two platens can open.
Mold Stroke. Is the maximum travel of the moving platen.
Shot Size. Usually reported in Oz or Grams of Polystyrene. It is the maximum amount of plastic that can be injected into the mold.
Core Pull. A hydraulic option that is used to pull a cored cavity within a mold. Most injection molding machines have this option. Some electric molding machine can be wired for this, but will require additional hydraulic pump, or mule.
Robot Interface. Having the SPi robot interface is very important to today’s manufacturing demands. The ability to wire up for a robot makes a big difference in values. If there currently is a robot on the machine, then you know it has interface, but if it doesn’t, you can look for the plug that would be a good indicator that it does.
Machine Styles: What Do They Mean and How Do They Affect Value in Selling Used Equipment?
Hydraulic Injection Molding Machines
- Typically, lowest initial investment
- Hydraulic typically have advantages when you need a high clamping force
- A proven technology that has been used for many years.
- Many used machines on the market. Great deals for used injection molding machines with hydraulic clamps.
Electric Injection Molding Machines
- Usually the most expensive style
- Are very energy efficient
- Clean no oil leakage
- Very high repeatability and accuracy
- High speed with multiple servo motors
Hybrid Injection Molding Machines
- Price point typically in-between all electric molding machines and hydraulic clamp machines.
- Variable speed AC Motors have the same energy efficiency as electric machines
- But power a hydraulic system to gain the advantages of hydraulic clamp design.
Ready for An Appraisal of Your Used Plastic Injection Molding Machine?
When you’re ready for an appraisal or it’s time to sell your plastic injection molding equipment, contact us via phone or the on page form. To collect equipment specifications pertinent to your specific plastic injection molding machine’s appraisal or sale, open the Injection Molding Machine Specs Form.