Medical Design Briefs - July 2022 - 40

once the situation is attended to, we send another signal to
close the pneumatic cylinders and get back into production. "
Ross highlights the Versa pullers' functionality and longevity.
The C-22 has a 2-in.-wide belt with a 9-in. traction length
and a maximum opening of 2 in., which easily accommodates
the tubing that ERG uses. Should ERG opt for a larger
tubing size, the company's C-44 features a 4-in.-wide belt and
a 4-in. opening, while the model 418 provides 18 in. of traction
length; both are available with pneumatic opening.
Ross began testing the Versa pullers around 2016 and has
been using them ever since. Several other pullers ERG initially
considered use hand cranks to change the distance between
the feed belts. Though functional, these cranks would
not allow the automation that is ERG's hallmark.
Ross says that Versa Machinery is the ideal companion to
ERG's process automation. " We've used them on every machine
of this type that we build here, " he says . " We use
them exclusively. We looked at others, but even if the form
and fit were right, without the pneumatic belt opening we
couldn't use them. "
In addition to being ideal for automation, the Versa pullThe
C-22 is a 2 × 9 in. (50.8 × 228.6 mm) traction length caterpillar extrusion
puller assembly, with timing belts and pulleys. (Credit: Versa Machinery)
chose the Versa Caterpillar pullers because they open and close
pneumatically, allowing the process to be automated for control
and safety.
" Whenever there's an alarm or an error in the system, the expander's
controller sends a signal to open the pneumatic cylinders
without stopping the belts, " says Chris Ross, ERG president. " Then,
ers are designed to be durable. All Versa pullers include
heavy-duty steel tables with a 3/8-in.-thick steel plate and ¼
× 2-in. angle iron. Custom stainless-steel guarding was added
for this ERG medical application. That guarding, along
with a durable powder coat paint, ensures the pullers can
work for years in some of the toughest environments imaginable.
" We've replaced some belts as needed, but we've
never had to repair or service a puller, " says Ross.
With this combination of durable, automated machines
from Versa, and ERG's automation experience and innovation,
medical device manufacturers have access to a system option
designed to ensure that their shrink tubing will be made
efficiently and cost-effectively.
This article was written by Logan Montgomery, Versa Machinery,
Elkhart, IN. For more information, visit http://info.hotims.com/
82323-344.
A unique puller assembly handles the fragile tubing as it enters and exits the system, facilitating the system's automation. (Credit: Versa Machinery)
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Medical Design Briefs - July 2022

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Medical Design Briefs - July 2022 - Cov1
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