Ultrasonic Punch and Weld in one step
Ultrasonic Punch and Weld in one step
Ultrasonic Punch and Weld in one step
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PRESS RELEASE (2 PAGES)<br />
FOR IMMEDIATE RELEASE<br />
Media Contact:<br />
Chris Van De Walker, Market<strong>in</strong>g<br />
Tel.: 630-626-1642<br />
Herrmann <strong>Ultrasonic</strong>s, Inc.<br />
1261 Hardt Circle, Bartlett IL 60103<br />
Tel. (630) 626-1626<br />
Fax (630) 626-1627<br />
E-mail:<br />
<strong>in</strong>fo@herrmannultrasonics.com<br />
Internet:<br />
www.herrmannultrasonics.com<br />
If you publish this press release, please send a pdf with the publication to E-mail:<br />
market<strong>in</strong>g@herrmannultrasonics.com<br />
Save material cost <strong>and</strong> cycle time:<br />
<strong>Ultrasonic</strong> <strong>Punch</strong> <strong>and</strong> <strong>Weld</strong> <strong>in</strong> <strong>one</strong> <strong>step</strong><br />
Filter membrane material is be<strong>in</strong>g used more frequently than ever <strong>in</strong> the design of plastic automotive <strong>and</strong> medical<br />
devices. The membrane material allows a device to be completely sealed from condensation gett<strong>in</strong>g <strong>in</strong>side but<br />
allows air to escape freely; preserv<strong>in</strong>g proper function of the device through pressure changes <strong>and</strong> protect<strong>in</strong>g<br />
sensitive electronics <strong>in</strong>side. This so called Pressure Balance Element (PBE) can be applied by mechanically<br />
clamp<strong>in</strong>g, glu<strong>in</strong>g or by us<strong>in</strong>g a thermal jo<strong>in</strong><strong>in</strong>g technology such as ultrasonic weld<strong>in</strong>g.<br />
<strong>Ultrasonic</strong> weld<strong>in</strong>g is a common method of attach<strong>in</strong>g the membrane to an <strong>in</strong>jection molded piece; a core<br />
application that Herrmann has had many years of experience perfect<strong>in</strong>g the design of. Dur<strong>in</strong>g the process, the<br />
ultrasonic vibrations are used to melt the plastic hous<strong>in</strong>g material allow<strong>in</strong>g the molten plastic to flow <strong>in</strong>to the<br />
weave of membrane. Once the material cools the membrane rema<strong>in</strong>s embedded <strong>in</strong> the hous<strong>in</strong>g creat<strong>in</strong>g a<br />
pressure tight seal. Compared to alternative methods, ultrasonic weld<strong>in</strong>g has many advantages <strong>in</strong>clud<strong>in</strong>g: fast<br />
cycle time, low energy consumption <strong>and</strong> the process doesn’t require consumables to be purchased.<br />
Due to short cycle times, ultrasonic weld<strong>in</strong>g is very suitable for automation <strong>and</strong> manual operations. Typical<br />
applications require less than a few hundred milliseconds for the membrane to be immediately welded to the<br />
hous<strong>in</strong>g. On top of cycle time, the technology only uses 10% of the power compared to other jo<strong>in</strong><strong>in</strong>g methods<br />
such as heat; thus reduc<strong>in</strong>g utility costs <strong>and</strong> valuable energy usage.<br />
The membrane material is offered by suppliers <strong>in</strong> roll or pre-punched disc form; the latter at a premium price.<br />
Besides cost, the challenge with these options is transferr<strong>in</strong>g the material accurately to the work piece <strong>in</strong> a<br />
consistent <strong>and</strong> timely manner.<br />
The new modular ultrasonic punch <strong>and</strong> weld system MPW takes the technology to the next level provid<strong>in</strong>g all<br />
possible benefits to the end-user. The system is not only an ultrasonic welder, but a means of die punch<strong>in</strong>g the<br />
membrane <strong>in</strong>to the appropriate shape <strong>and</strong> transport<strong>in</strong>g the material to the weld region sav<strong>in</strong>g material cost <strong>and</strong><br />
production <strong>step</strong>s.<br />
This modular system utilizes a reel to reel guide system to <strong>in</strong>dex the membrane material <strong>in</strong>to position via tension<br />
control. A cyl<strong>in</strong>der actuates the ultrasonic tool<strong>in</strong>g through a die-punch assembly cutt<strong>in</strong>g the material to size. As<br />
the tool passes through the punch, a vacuum is applied <strong>in</strong> order to hold the material <strong>in</strong> place for the weld<strong>in</strong>g<br />
operation.<br />
The Herrmann MPW system is very flexible as it can be <strong>in</strong>tegrated <strong>in</strong>to automation l<strong>in</strong>es or used as a manual<br />
workstation. The fully <strong>in</strong>tegrated work station will be shown at the NPE (booth # 3073) <strong>in</strong> Florida.<br />
www.herrmannultrasonics.com
Page 2 of 2<br />
Picture 1: MPW – modular ultrasonic<br />
punch <strong>and</strong> weld system<br />
Picture 2: <strong>Ultrasonic</strong>ally welded membrane