Guill Tool & Engineering (West Warwick, RI) introduced a single-point concentricity extrusion crosshead at last week’s co-located PLASTEC West and Medical Design & Manufacturing (MD&M) West event in Anaheim, CA. The crosshead is fitted with micro-fine adjustment screws for precise concentricity adjustment.
“The older model has four bolts,” explained Bill Conley, Sales Manager, who was manning the stand. “You have to tighten one bolt, loosen the other and so forth to adjust concentricity. If you got it wrong, it could damage the piece and you would lose several hours while it was being fixed.”
Concentricity precision in the new crosshead reaches 0.008 in. or finer per revolution. Single-point concentricity adjustment is a unique Guill innovation for the extrusion of thin-walled jacketing and precision ID/OD tubing, said the company. One adjustment bolt controls 360° of adjustment.
Features of the single-point crosshead include a patented cam-lock deflector for quick changeovers with a residence time of one minute at 0.5 lb/hr material flow, optimized usage with extruders measuring ½ and ¾ in. and a maximum die ID of 0.250 in.
The single-point crosshead accepts both vacuum and micro-air accessories, and is suited for pressure and sleeving applications. Fluoropolymer designs are available upon request.
The video embedded below shows how the crosshead works.
|The next rendezvous for plastics professionals and the medical device supply chain happens in Cleveland, OH, on March 7 and 8, 2018. UBM America’s newest design and manufacturing trade show and conference, Advanced Design & Manufacturing (ADM) Expo showcases five zones—medical manufacturing, plastics, packaging, automation and robotics, and design and manufacturing. A full slate of conference sessions will explore innovations in advanced manufacturing. Go to the ADM Cleveland website to learn more and to register to attend.|
Another recent development at Guill was the opening of an in-house rheology laboratory at its facility in West Warwick. The testing equipment includes a hybrid rotational rheometer, differential scanning calorimeter and thermal conductivity meter. The lab provides customers with an alternative to third-party testing facilities that often are inexperienced in extrusion processes, said the company. Guill not only can gather data similarly to third-party testers, but it has the expertise to interpret data as it applies specifically to extrusion. For more information about the rheology laboratory, click here.