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www.us-
tech.com
May, 2016
Reducing the Expense of Servicing Diaphragm Dispensing Valves
By Can La, Product Manager, Techcon Systems A
n exponential increase in the availability and use of two-part epoxy adhesives is pro- viding valuable benefits for a growing num- ber of manufacturing applications. Often enabling
at lower weight and greater strength, and deliver a number of other substantial production through- put efficiencies. However, the expanding use of two-part
adhesives has also exposed an unfortunate gap in the existing product lines offered by manufactur- ers of automated dispensing valves. This deficien- cy has excluded many manufacturers from benefit- ting fully from the advantages of these materials. An advancement in dispensing systems, disposable materials path (DMP) technology, will enable nearly any manufacturer to take full advantage of the potential of two-part adhesives, as well as gain even greater benefits from materials such as cyanoacrylates and UV-curable resins.
Fast-curing Adhesives — a Double- Edged Sword
One of the most desirable properties of two- Techcon Systems DMP diaphragm valve.
significantly faster and more dependable bonding than conventional adhesives, two-part adhesives are able to create tight bonds between components with small surface areas, replace rivets or screws
part adhesives is their rapid bonding speed. Indeed, many of these products advertise a work- ing life of only a few minutes. But, what this also means in real world practice is that if production lines are unexpectedly stopped, even briefly, for any of a multitude of common reasons — from a need to clear a product collision to a technician taking a break — the immobile mixed epoxies can cure very quickly in the dispensing valve. This can destroy an expensive valve, or at least lead to the need for a repair costing several hundred dollars, not to mention the cost of the line downtime need- ed to remove, clean or replace the valve. Downtime can easily extend up to 30-60 minutes or more, and if sufficient replacement parts or standby repair resources are not immediately available, it can run into a loss of production of hours or days. Many operators justify shouldering the inventory carry-
Los Angeles Office: 3528 Torrance Blvd., Suite 100
Torrance, CA 90503 Phone: (310) 540-7310 Fax: (310) 540-7930
ing costs of several valves for this reason, or main- tain the expense of an in-house or nearby repair infrastructure.
Robotic fluid dispensing system used for bonding applications.
It should also be noted that while most of
these types of issues occur with two-part adhe- sives, there are also similar risks associated with cyanoacrylates and UV-curable resins. While, the-
Continued on page 58
Atlanta Office: 1580 Boggs Rd., #900
Duluth, GA, 30096 Phone: (770) 446-3116 Fax: (770) 446-3118
San Francisco Office: 26230 Industrial Blvd.
Hayward, CA 94545 Phone (510) 293-0580 Fax (510) 293-0940
Patented, Next-Generation Soldering Technology
Main Features
•Outstanding reduction of voids
•Optimal tact time with patented conveyor transfer•Variety of models available including inline •Energy-saving and with easy maintenance flux collection
by using vacuum zone system Model: RSV12M-512-RLF Model: RSV12M-512-RLF Visit us at
www.seikausa.com to see more of our products!
EIGHTECH TECTRON CO., LTD.
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