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www.us-tech.com
lMost anaerobic adhesives and Silicones, epoxies, lubricants, and Pastes, paints and gels.
sealants. l
polyurethanes. l
lCosmetics and pharmaceuticals. l
Food products. PC pumps are well suited for
single- or multiple-component appli- cations and they offer many opera- tional advantages, such as main- taining constant volume at variable dispensing speeds, continuous mate- rial flow, few moving parts, low maintenance, and no cycle-time delays for cavity recharge. Specific design features can
provide additional functional bene- fits. The cavities in a PC pump taper down as they reach their ends, over- lapping with neighboring cavities and essentially eliminating flow pulsation. Due to the pump’s seal design, a flow meter or check valves are not required with a PC pump. The amount of dispensed mate-
rial, dispense time, flow rate, and material component ratio are all adjustable on a PC pump through a keypad with liquid-crystal-display (LCD) interface. A PC pump’s built-in micro-
processor can be programmed, at ratio, to turn the pumps for a select- ed dispense volume; accompanying memory can store a number of pro- grams with different parameter set- tings for quick transfer between applications requiring different vol- umes of material. Highly accurate signal-to-action timing enables con- sistent deliveries of dispensed mate- rial. With a PC pump’s shot-size accuracy and range, adjustable flow
Light-Guided Connector Assembly
Use this new, patented system to double your productivity* when assembling circular and rectangular connectors. The Light Director™ system uses light fibers driven by super-bright LED lamps to individually illuminate target cavities in the connector being assembled. When you enter the wire code printed on unconnected wires or touch a wire terminated at the other end, software turns on the appropriate fiber, thereby causing a bright, flashing light to project from inside the target cavity guiding you to the proper insertion point. Correct insertion is confirmed by the elimination of light from that location, whereas insertion into an incorrect cavity leaves the flashing light visible.
® Model M3U PC-based cable test system. Electrical test after build possible.
Pinning. Probed guided assembly also available.
and voice commands.
your mating connector and we will mount and program it at no charge.
www.cableeye.com/LightDirector Tel: (800) 776-0414
unconnected wire with probe or finger.
*Field testing has shown a doubling of assembly speed while practically eliminating errors.
flash. Computer also reads pin number in natural voice.
insertion.
CAMI Research Inc.
CAMI ®
rate, and consistent ratios, a repeat- able process can be introduced into production. PC pumps should be capable of integration into most com- mercially available robotic platforms. Many flexible, digitally
vide consistent delivery to a meter/mix/dispense system. One of the principal advantages of an MMU is the ease of material supply
September, 2013
Progressive Cavity Pumps Provide Precise, Even Dispensing Continued from previous page
controlled metering/mixing systems using PC pumps are now built around a worksta- tion format, making it possi- ble to use positive displace- ment pump technology that is suitable for medium- to high- volume dispensing require- ments through proprietary microprocessor programming controls. Such systems are capable of storing as many as 40 dispensing programs in memory and, with their low maintenance requirements, have low cost of ownership compared to competitive sys- tems.
Material Management Material preparation is
crucial for dispensing success. If materials are not condi- tioned properly, for example, dispensed material can acquire air bubbles and incon- sistent viscosities, along with settling and separation of material components. Many dispensing problems occur due to poor material han- dling.
fits including: l
a well-designed dispensing system, barrels can be disconnected and replaced without stopping production or requiring a de-airing of the dis- pense system. MMUs provide several key bene-
reduce manufacturing variables. l
hazardous spills. l
lifting heavy material packaging. l
and device feedback. l
ual process control. l
These systems can reduce the potential for injury from spills and
exposure to harmful fumes and fluids. l
MMUs provide continuous process
This level of automation can reduce the variables caused by man-
gy consumption from unnecessary continuous processing operation.
The use of MMUs can reduces ener-
Material Conditioning Filler settling, moisture absorp-
Many automated metering/mixing systems using
PC pumps are now built around a work-station format.
A Material Manage ment Unit™
(MMU) can provide the vital materi- al conditioning needed to ensure accurate, reliable, and repeatable material dispensing. MMUs are specifically designed to address material handling concerns and pro-
exchange. Materials are typically supplied in cans, buckets, barrels, or totes. An MMU’s design allows a user to swap containers without introduc- ing air into the system. Air in supply lines is a major cause of off-ratio dis- pensing and shot size inaccuracy. In
tion, and material viscosity cause inaccuracy and poor reliability in tra- ditional dispensing systems. Often, material conditioning is the least acknowledged critical aspect of a dis- pensing system. Material condition- ing includes agitation, heating, degassing, and desiccant drying. Agitation is the stirring of the mate- rial prior to metering, mixing, or dis- pensing. Agitation can occur continu- ously, at specific intervals, or until a material reaches a specific viscosity level. Dispensed materials with fillers require agitation to ensure that the fillers do not settle. If accuracy and repeatability are necessary to a dispensing appli-
Continued on next page
This level of process control helps A well designed system can reduce These systems can reduce employee
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