15-40kHz Digital Servo Ultrasonic Plastic Welding Machine

Compliance:: CE Certified
Delivery Time:: In Stock
Payment:: L/C D/A D/P T/T Western Union
Model:: RX-RD40K
Warranty:: one-year warranty, lifetime maintenance service

Email:: David@battery-equipments.com
WhatsApp:: +8618659217588
WeChat:: 18659217588

Product Description

Digital Servo Drive Technology

15–40kHz Digital Servo Ultrasonic Plastic Welding Machine

Model: RX-RD40K — Next-generation high-precision joining solution engineered for exceptional control, reliability, and process consistency.

5 µm

Repeat Accuracy

0.1 N

Force Control

30–40%

Energy Saved

RX-RD40K Digital Servo Ultrasonic Welding Machine

1. Product Overview

The servo ultrasonic welding machine is high-precision welding equipment combining a servo closed-loop drive with ultrasonic high-frequency vibration. It is primarily used for the efficient and high-precision joining of plastics and partial thin metals. Compared with traditional pneumatic ultrasonic welders, it represents a significant leap in parameter controllability, consistency, and adaptability.

2. Core Principles & Structure

Working Principle: The ultrasonic generator outputs 15–40kHz high-frequency electrical signals, which are converted into same-frequency mechanical vibrations by the transducer. The servo system (servo motor + precision ball screw + encoder + pressure sensor) precisely controls the downward speed, position, and pressure of the welding horn. The vibration generates friction heat at the joint surface, causing local material melting, followed by holding and cooling to form a firm joint.

Core Components

Ultrasonic System

Generator, transducer, booster, welding horn.

Servo Drive System

Servo motor, precision ball screw, displacement/pressure sensors.

Digital Control System

Human-Machine Interface (HMI), PLC/motion controller, supporting multi-stage pressure/speed curves, data traceability, and MES integration.

3. Key Technical Advantages

Ultra-High Precision

Pressure reaches 0.1N level, repeat accuracy within 5 µm, millisecond timing. Full closed-loop real-time adjustment eliminates pneumatic instability.

Energy Saving & Eco-Friendly

No air compressor required; energy consumption is 30%–40% lower with significantly lower operating noise.

Flexible Process

Multi-stage pressure/speed curves (pre-pressing, welding, holding) adaptable to PP, ABS, nylon, composite plastics, and lithium battery tabs.

Easy Integration

Rich digital interfaces allow linkage with robots and visual inspection systems, ideal for automated lines.

4. Typical Application Scenarios

Automotive Electronics

Sensors, connectors, battery components.

Medical Devices

Infusion tubes, masks, enclosures.

Consumer Electronics

Phone frames, earphone parts, chargers.

New Energy

Lithium battery tabs, soft-pack sealing.

5. Comparison: Servo vs. Pneumatic Ultrasonic Welders

Dimension	Servo Ultrasonic Welder	Pneumatic Ultrasonic Welder
Drive Method	Servo Motor + Ball Screw (Closed-loop)	Compressed Air + Cylinder (Open-loop)
Control Precision	Pressure 0.1N, Displacement 5 µm, fully programmable	Pressure affected by air supply, low precision
Energy / Cost	Higher initial investment, lower long-term energy use	Cheaper initial cost, requires air compressor, higher maintenance
Application Scenario	High-precision, high-consistency, complex processes	Regular plastic parts, high volume, low precision requirement

6. Selection & Maintenance Guidelines

Selection Guide

Choose frequency (15/20/35/40kHz) and power based on material (plastic/metal), welding area, and thickness; confirm pressure/displacement sensor configuration according to precision demands.

Maintenance Guide

Regularly clean the welding horn and inspect transducer connections; pay attention to lubrication and heat dissipation for the servo system; keep grid voltage stable; calibrate sensors periodically.

Technical Data Specifications

Frequency	15 kHz \| 20 kHz \| 35 kHz \| 40 kHz
Power	3200W (15kHz) \| 3200W (20kHz) \| 1500W (35kHz) \| 1200W (40kHz)
Minimum / Maximum Welding Force	50/3500 N (15kHz) \| 30/2500 N (20kHz) \| 20/1500 N (35/40kHz)
Working Stroke & Motion System	100 mm \| Driven by Servo Motor
Trigger & Welding Modes	Trigger: Pressure, Depth Modes: Time, Energy, Ground, Absolute Depth, Relative Depth
Intelligent Management & Amplitude	Speed / Force / Amplitude / Quality / Data / Safety Management Amplitude Control: Single amplitude / Stepping amplitude
Dimensions & Mechanical Specs	Dimensions at Max Height: 650 × 1385 × 400 mm Working Radius to Horn: 225 mm \| Height Adjustment: 300 mm
Operation Panel & Software	10-inch touch screen panel \| USB data export / Welding record / Data statistics Language: Chinese / English
Capacity & Recipes	Parameter Recipes: 10 sets \| Stored Welding Counts: 99999
Optional Additional Functions	Tooling clamping, X and Y shifters, protective light curtains, film rollers, acoustic enclosure lift