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Author
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Topic: Energy Saving
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paddic
Member Posts: 1
From:
Registered: Jan 2004
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posted January 20, 2004 07:21 AM
   
How can we save power in an injection moulding machine ?IP: Logged |
zabielski
Senior Member Posts: 322
From:McHenry, IL USA
Registered: Nov 2002
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posted January 22, 2004 06:40 AM
Contact your electical provider, and negogiate a "peak power" contract. It allows you to start-up your equipment at irregular hours, thereby preventing a surge of demand power. In general, most IM's (or other differnent industrial factories) don't know this.Also contact a heater blanket manufacturer to insulate your barrel and nozzle/adapter segments. IP: Logged |
Tom C
Moderator Posts: 349
From:Brodheadsville, PA USA
Registered: Jun 2001
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posted January 22, 2004 09:27 AM
Great suggestions Ken.If you search Google for - Injection Molding Energy - you will find that the big savings is to go to electric molding machines. The capital required to make the change might even be assisted by the electric utilities and goverment. There are also a lot of other sites suggesting energy savings through changes in control logic and hydraulic system changes. Tom C IP: Logged |
zabielski
Senior Member Posts: 322
From:McHenry, IL USA
Registered: Nov 2002
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posted January 23, 2004 07:53 AM
Tom:
One of the primary issues of going all "electric" is the area your in. An example is that in IL, energy cost are >20% of the operating budget. Very high in IL.I would also suggest that one should consult with their energy provider, and have them send one of their engineers to your site. You would be amazed how they can help - especially those in what I term as "high energy costing States. IP: Logged |
cms62
Member Posts: 1
From:Daytona Beach, FL, USA
Registered: Jul 2004
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posted July 14, 2004 08:08 PM
As mentioned earlier insulating your barrel is a place to start. Also make sure your people are trained to optimize your processes. We all know that we want to minimize our cycle times for production reasons, but proper processing of parts can also benefit you in energy savings. Some suggestions follow.1. Most of the heat in your polymer melt comes from the shear created during the plasticizing process, when the screw is running. Keep your barrel heaters set as near the middle of the material manufacturers processing guidelines as possible. 2. Check your timers! Transfer from high speed fill to pack / hold by position if possible (on a properly maintained machine you will see more consistent parts too). And use a scale when processing. After you have achieved the part quality you need gradually reduce the hold timer, weigh 5 shots, and look for changes in the part weight. When you see the part weight starts to drop you have reached the point where you are not allowing the gates to freeze properly and can go back up one notch and stop. Use these types of procedures in every processing step to minimize the amount of time your pumps are running at high speed and volume. The more your pumps idle the less energy they use. IP: Logged |
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