Sonics 2055-Press - Manual (Page 6)

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I N S T R U C T I O N M A N U A L • M O D E L 2 0 5 0 / 2 0 5 5
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I N T R O D U C T I O N
The models 2050 and 2055 presses are 20 kHz precision benchtop
pneumatic actuators/presses used for ultrasonic plastics assembly. The 2050
and 2055 presses can be supplied with the following GX-Series power
supplies:
■ GXT . . . . . . .Weld by digital time
■ GXE . . . . . .Weld by digital time and/or constant energy
■ GXL . . . . . . .Weld by digital time, constant energy and/or distance*
*Available with Model 2050 press only.
Both presses are also compatible with E and F Series power supplies.
O V E R V I E W O F U L T R A S O N I C P L A S T I C S
A S S E M B L Y
WHAT IS ULTRASONICS?
Ultrasonics refers to vibrational waves with a frequency above the human
audible range which is usually above 18,000 cycles per second (Hz).
PRINCIPLE OF ULTRASONIC ASSEMBLY
The basic principle of ultrasonic assembly involves conversion of high
frequency electrical energy to high frequency mechanical energy in the form
of reciprocating vertical motion which, when applied to a thermoplastic,
generates frictional heat at the plastic/plastic or plastic/metal interface. In
ultrasonic welding, this frictional heat melts the plastic, allowing the two
surfaces to fuse together; in ultrasonic staking or insertion, the controlled flow
of molten plastic is used to capture or lock another material in place (staking)
or encapsulate a metal insert (insertion).
ULTRASONIC ASSEMBLY SYSTEMS
“Sonics” ultrasonic assembly systems are generally composed of the fol-
lowing major elements: a power supply, converter, booster, horn, pneumatic
press/actuator and holding fixture, as detailed in the diagram on the next
page. A review of this diagram will help you understand the basic elements
involved in the assembly process and their relation to each other.
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