The 35kHz ultrasonic spot welder is a complete assembly system consisting of an intelligent ultrasonic generator and a welding gun. Easy to operate, it supports diverse applications including embossing, staking, riveting, and spot welding. The welder produces strong structural welds and is particularly suited for large parts, extruded or cast thermoplastic sheets, and components with complex geometries.
Key Specifications:
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Digital Ultrasonic Generator |
Ultrasonic Welding Gun |
| The PLC touchscreen ultrasonic welding generator is a digital system with proven performance and stable quality in the market. It features amplitude compensation and step division functions, real-time automatic frequency tracking with live display, and comprehensive protection against overload, voltage, and transducer voltage damage. | The welding gun is lightweight and easy to operate, with quick-change sonotrodes for fast retooling. It is commonly used for welding robust structural joints, including complex-shaped plastic parts and extruded sheets. |
The generator does the thinking while the operator concentrates on the joint. Its touchscreen panel shows frequency tracking in real time, so you can watch the stack settle instead of judging it by ear, and amplitude compensation with step division keeps the output consistent as the horn warms and the load changes. Amplitude is adjustable rather than fixed, which matters when ultrasonic welding plastic parts of different wall thickness or hardness on the same bench — a thin wall and a thick boss rarely want the same energy. Protection covers overload, supply voltage and transducer voltage, the faults that most often shorten a stack's working life. Because every setting is displayed digitally, an operator can return to a proven setting instead of hunting for it.
The horn is the part that touches the workpiece, so its shape follows the joint. Horns come in titanium, steel or aluminum, driven by a titanium alloy booster that carries the vibration down from the generator. The horn is removable, so a worn or damaged tip can be replaced on the gun without returning the whole assembly, and a second profile for another job can be kept ready for a changeover of a few minutes. Face size, contour and contact area have to follow the joint on your part: the face that reaches a rib or a curved boss is not the face that presses a flat seam. Send the drawing and the material, and as a custom ultrasonic horn manufacturer we machine the profile to your part.
Unsure which ultrasonic system fits your workpiece or production line? MCSONIC's engineering team helps you select the right machine, horn or blade configuration before you order, backed by over 15 years specializing in ultrasonic cutting and systems widely used in factories worldwide. We support customization of key parameters, integration into existing automation lines, and clear guidance on installation, commissioning and daily operation. Our after-sales engineers help troubleshoot issues remotely or on site, and selected systems support remote diagnostics. Send us your drawings, samples or cycle targets and we will recommend a practical configuration.
PVC, PP, PE, PSU, ABS, PC, HIPS and PMMA are all within range. Amorphous resins such as ABS, PC and PMMA generally take a weld readily, while semi-crystalline materials like PP and PE need more amplitude and a closely matched horn. That is why thermoplastic welding setups are usually tuned on the actual part rather than fixed from a chart.
Higher frequency means finer vibration over a smaller contact area, which suits spot work, staking and riveting on molded parts; lower-frequency equipment pushes more energy into bulkier sections. It is also why a 35 kHz ultrasonic spot welder is a good match for hand-guided work on large parts, where local, controlled heating is safer than a broad squeeze. The right starting amplitude still comes from your material and the size of the weld area.
Yes. Spot welding uses a face that presses onto the joint, while staking uses a tip shaped to form a stud or boss over the mating part. On ultrasonic welding plastic parts with several features, the same generator runs both operations and only the profile changes, so one system covers work that would otherwise need two setups.
Work along the joint in overlapping steps: set the horn face squarely on the spot, trigger the cycle, then move on with even spacing. Ultrasonic spot welding is done point by point rather than in one continuous pass, so marking the positions first keeps a long run consistent. On most parts the gun is the only thing that has to be positioned — the generator can sit to one side.
The generator handles frequency tracking and amplitude compensation on its own, so the operator mainly has to place the horn squarely and keep the spacing even. That makes the learning curve shorter than for a press-based machine, where parts have to be loaded and clamped. The setting that repays attention is amplitude, and it is worth checking on the first few parts of each run.
Material and grade, the position of the weld or feature, and how the part will be presented to the gun. A photo with a few dimensions usually says more than a long description. If the joint sits in a recess, follows a curve or runs close to a wall, mention it — that is where a shaped profile saves rework.
| Parameter | Specification |
|---|---|
| Model | MC‑UH3506 |
| Frequency | 35 kHz |
| Frequency Range | 34.20 – 35.40 kHz |
| Welding Amplitude | 10% – 100% adjustable (1% accuracy) |
| Power | 500 W |
| Generator Dimensions | 390 × 195 × 100 mm |
| Generator Weight | 6 kg |
| Horn Material | Titanium / Steel / Aluminum |
| Booster Material | Titanium alloy |
| Welding Materials | PVC, PP, PE, PSU, ABS, PC, HIPS, PMMA |
