2007 Master Catalog - (Page 4) Vacuum Pump Selection Guide 1. Pick and Place/Material Handling: LIVE CHAT! Click Here Pick and Place/Material Handling refers to lifting, gripping, rotating and positioning of an object through the use of a vacuum pump and vacuum cup. Use the Equation: Force = Pressure X Area to determine: • Lifting capacity of the pump and cup • Required vacuum area, i.e. diameter of the cup – see cup section for a more detailed explanation • Required vacuum level of vacuum pump FORCE PRESSURE AREA Safety Factors Horizontal lift = 2 Safety factor of 2 is recommended when cup face is in horizontal position. Vertical lift = 4 Safety factor of 4 is recommended when cup face is in vertical position. = X "d" OBJECT WEIGHT SAFETY FACTOR * Lbs (Kg) CONVERT "Hg TO PSI, DIVIDE BY 2 (2Hg" = 1 PSI) PSI (Kpa) AREA = pi * d /4 pi = 3.14 2 2 in (cm ) 2 Force = Pressure x Area where: F = the weight of the objects in lbs [kg] multiplied by the safety factor above. P = the expected vacuum level in PSI [Kpa], remember to convert "Hg to PSI by dividing by 2 A = the area of the vacuum cup measured in square inches. Use the equation A = d2 4 3 Vacuum Level Ranges: • “L” or “F” Series 0-10"Hg, [0 to 339mbar] for low vacuum / high flow applications • “M” or “D” Series 0-20"Hg, [0 to 677mbar] for medium vacuum / high flow applications • “H” or “S” Series 0-28"Hg, [0 to 948mbar] for high vacuum / standard flow applications 3 Types of Material: • Non-porous materials: steel, glass laminated chipboard, rigid plastic, semiconductors, etc. • Porous materials: corrugated, wood, foam, felt, woven materials, objects with extremely rough or uneven surfaces. • Flexible materials: plastic films, baked good, IV bags, paper bags – things that wrinkle. Inexact Science When handling porous materials such as corrugated or heavy fabric, it may be hard to choose the exact pump required because the leakage rate is not normally known. It is best to run a trial to test the ability of the pump to overcome the leakage. For existing systems, consult Vaccon for the equivalent pump size. For new applications, take advantage of Vaccon’s 30 day Test & Evaluation program to ensure proper pump selection. System Speed: Cycle rate of the pump/cup system is determined by the evacuation speed of the venturi. See Vessel Evacuation. Increase safety, reliability and speed by using one pump and one cup at each location. Should one cup fail the others will maintain their grip. 4 Phone: 1-800-848-8788 or 508-359-7200 E-Mail: engineering@vaccon.com https://www.websitealive5.com/2126/rLogin.asp?groupid=2126&websiteid=0&departmentid=0&sessionid_=36&loginname=&loginemail=&loginquestion=&infocapture_ids=&infocapture_values=&dl http://www.vaccon.com
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