Dumbbell Ultrasonic Double Transducer with 50mm Diameter for
Welding Machine
Description:
Ultrasonic welding converts a 50/60 Hz current into 15, 20, 30 or
40 KHz of electrical energy through an ultrasonic generator. The
converted high frequency electrical energy is again converted by
the transducer into a mechanical motion of the same frequency, and
then the mechanical motion is transmitted to the welding head
through a set of horn devices that can change the amplitude. The
horn transfers the received vibrational energy to the joint of the
workpiece to be welded, in which the vibrational energy is
converted into thermal energy by friction, melting the area of the
component to be welded. Ultrasonic waves can be used not only to
weld metals, hard thermoplastics, but also fabrics and films.
Specifications:
| Model | QR-5015-4BZ-SZ |
| Frequency | 15 khz |
| Output power | 3600 watt |
| Ceramic disc Diameter | 50mm |
| Qty of ceramic discs | 8pcs |
| Capacitance | 22-24nf |
| Application | Plastic welding machine |
Ultrasonic plastic welding principle:
When ultrasonic waves act on the thermoplastic plastic contact
surface, high-frequency vibrations of tens of thousands of times
per second are generated. This high-frequency vibration of a
certain amplitude transmits ultrasonic energy to the weld zone
through the upper weldment, because the weld zone is two At the
interface of the weld, the acoustic resistance is large, so local
high temperatures are generated. Moreover, due to the poor thermal
conductivity of the plastic, it can not be dissipated in time and
gather in the weld zone, so that the contact faces of the two
plastics melt rapidly, and after a certain pressure, they are
integrated into one. When the ultrasonic wave stops, let the
pressure last for a few seconds to solidify it, thus forming a
strong molecular chain for welding purposes, the welding strength
can be close to the strength of the raw material. The quality of
ultrasonic plastic welding depends on the amplitude of the
transducer welding head, the applied pressure and the welding time.
The welding time and the welding head pressure can be adjusted. The
amplitude is determined by the transducer and the horn. The
interaction of these three quantities has a suitable value. When
the energy exceeds the appropriate value, the melting amount of the
plastic is large, and the welding material is easily deformed; if
the energy is small, the welding is not easy, and the applied
pressure is not too large. This optimum pressure is the product of
the side length of the welded portion and the optimum pressure per
1 mm of the edge.
Dumbbell Ultrasonic Double Transducer with 50mm Diameter for
Welding Machine
