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Compact Ultrasonic Benchtop Spot Welder

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Ultrasonic Handheld Spot Welding System

Compact Ultrasonic Benchtop Spot Welder

Chengguan Intelligent Desktop Ultrasonic Small Spot Welder, specially developed for spot fusion of PVC pipes and fittings. Equipped with digital auto frequency tracking system, it performs localized fixed-point welding without full-pipe thermal softening, delivering strong, crack-resistant weld joints. No glue or adhesive required for clean and eco-friendly bonding. Ideal for positioning spot welding, partial sealing and fixing of small PVC tubes, PVC connectors, rigid & flexible PVC fittings. Compact benchtop design with pneumatic foot-pedal operation. Custom titanium welding horns available according to pipe dimensions, perfect for prototyping and small-to-medium batch PVC fittings manufacturing.

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Product Overview

Chengguan Intelligent Desktop Ultrasonic Small Spot Welder is engineered for precision spot welding of PVC pipes and fittings. The machine adopts high-frequency ultrasonic vibration to generate frictional heat at the welding spot, achieving localized molecular fusion of PVC materials.

Different from traditional PVC glue bonding, ultrasonic spot welding eliminates glue curing waiting time and solvent emission, producing odor-free joints with strong resistance to debonding. Heat concentrates only on the welding point and will not cause large-area thermal softening, pipe collapse or deformation, preserving the original shape and inner diameter of PVC pipes.

The compact benchtop unit can be placed directly on workbenches. Pneumatic downward pressure and foot-pedal triggering deliver simple operation. Built-in digital auto frequency-tracking generator ensures stable amplitude output and consistent weld quality, greatly reducing defects like cold joints and cracks on PVC workpieces. Custom titanium horns can be manufactured according to PVC pipe diameter, wall thickness and spot geometry for both rigid and flexible PVC workpieces.

Core Advantages

✅ Designed for PVC pipe spot welding: localized fusion to prevent pipe collapse & deformation

✅ Digital auto frequency tracking generator: real-time frequency lock, stable amplitude, less cracking on PVC

✅ Replace PVC glue bonding: solvent-free, no odor, no long curing time for higher productivity

✅ High spot strength: molecular fusion, better tensile & water resistance than adhesive joints

✅ Compact desktop unit: small footprint, easy setup on workbenches for factory & lab prototyping

✅ Custom titanium welding horns: tailor-made by pipe diameter, wall thickness and spot shape

✅ Adjustable parameters: weld time, pressure and amplitude tunable for rigid & flexible PVC of different wall thickness

Applicable Materials & Applications

Materials Rigid PVC pipes, flexible PVC hoses, PVC pipe fittings, PVC connectors, PVC plastic joints
Applications Position spot welding of small PVC tubes, partial sealing of pipe fittings, riveting & fixing of PVC accessories, PVC pipe sample prototyping, small PVC pipeline parts for home appliances, small bathroom PVC connectors, lab PVC specimen fabrication

Working Principle

The ultrasonic generator outputs high-frequency electrical signals. The transducer converts electric energy into high-frequency mechanical vibration, amplified by booster and transmitted to the titanium welding horn. When the horn presses on the PVC pipe welding spot, high-frequency vibration creates rapid frictional heat at the contact surface. The PVC layers melt and fuse instantly, then cool and solidify once pressure is released to complete spot welding. Heat remains confined to the spot area, protecting the rest of the PVC pipe from deformation.

FAQ

Q1: What is the core advantage of the P2 series compared with ordinary pneumatic welding machines?
A: The P2 series upgrades digital frequency tracking technology and visualized pressure display, with four intelligent welding modes and millisecond-level response. It solves the frequency instability problem of traditional equipment, with higher welding accuracy, better stability and stronger production traceability, making it more suitable for high-standard batch production.
Q2: Can this machine adapt to different material welding?
A: Yes. Multiple intelligent welding modes and adjustable digital parameters support welding of various thermoplastic materials, fabrics and synthetic materials, with strong scene compatibility and flexible parameter matching.
Q3: Will ultrasonic pneumatic welding damage product appearance?
A: No. Adopting low-pressure instantaneous molecular fusion technology, the welding process is stable and controllable, with no extrusion deformation, no high-temperature scald and no surface residue, realizing zero-trace high-precision welding.
Q4: How do I choose between Time / Energy / Power / Force welding modes?
A: For stable materials and standard workpieces, choose Time mode; for slight material or thickness variation, choose Energy mode; when high power consistency is required, choose Power mode; for appearance parts that need zero-trace welding, choose Force mode.
Q5: Is on-site installation and training supported?
A: Yes. We provide installation guidance, parameter setting support and operator training videos. For batch orders, on-site engineer commissioning is available — please contact our sales team in advance.

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Machine Power On：Press the power switch button to start the welding machine.

Starting Method：Press the start switch with both hands.

Welder Reset：

Manual Operation Mode: Press and hold the two operating switches until the machine reaches the ready state and output is enabled.

Automatic Operation Mode: The welder requires an external input signal, which is provided by an external source.

System Composition：System operation requirements depend on the system type, selected options, the user’s equipment and system interfaces, as well as the specific application.

Control Process：The control of the welding process depends on the system structure. For generators equipped with a color front-panel display, users can control the welding process using the IGWA software operated through the HMI.

Quick Mold Change：In production scenarios involving multiple mold types, the One-Button Mold Change technology reduces labor costs and improves production efficiency.

Online Function：The MES system can identify and collect data from each welding operation, including output power, welding stroke, and welding time (connection to MES requires a pre-customized interface).

Pressure Test with Digital Display：Air pressure shown digitally.

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Product Parameters

Machine Maintenance

Ultrasonic generator : Wipe the machine body regularly with a clean, soft cloth to remove dust and stains, and prevent foreign objects from entering the interior and affecting performance . Check whether the wiring connections are loose, ensure good ventilation and heat dissipation, and prevent malfunctions caused by overheating.

Transducer and amplitude transformer : Check for cracks and wear, and ensure the connections are secure. Replace or tighten any faulty components promptly.

Welding head maintenance : Clean surface residue after each use, regularly check for wear, and replace it in time if the wear is severe to ensure welding effect.

Control system : Regularly check whether the control buttons and display screen are working properly to avoid accidental operation, and update the system software in a timely manner.

Regular inspections : The overall performance of the equipment is tested at regular intervals, such as welding strength and frequency stability, to ensure that the equipment is in optimal working condition.

After-Sales Service

Our warranty period is 1 year, and if you have any other questions, we will provide you with online technical support to help you.