Injection molding machine
Injection molding: How to specify an injction molding machine
By Jojn Bozzelli, Founder drom Injection Molding Solutions
From: Plastic Technology
Issue: July 2015
In part two of a three-part series, the focus is on the injection unit.
With the market percolating, more molders are looking at new presses. This is the second in a series of three on what you need to know and do to specify a machine that is best for your needs. In Part 1 we covered the clamp. Here, we turn our attention to the injection unit.
As stated last month, the economic upturn is bringing the injection molding manufacturing market along for the ride. Demand for molded parts has risen, and in response many molders are upgrading or expanding their plants. This has increased demand for new machines. Lead times are long and you need to have a plan.
If you missed it, here’s a recap of the major points from Part 1:
• Try not to buy a machine on the spur of the moment.
• Have a retirement plan for your equipment.
• Develop a list of needs for the next machine even if money is not available or there is no money (or need) to purchase right now.
• Don’t settle for whatever is in inventory; specify what you need.
• Pay attention to the details, get the folks on the shop floor involved, and document what you need to the purchasing agent. Don’t get the purchasing manager involved in the specification process, as he or she will be singularly motivated by price. Follow the Deming principle: The people that use the equipment specify the equipment.
• Do not buy a machine for a single job; build in flexibility, because you do not know the future.
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