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1. Product Overview
The 15K 4200W automatic frequency tracking ultrasonic plastic welding machine is a high-power intelligent welding device launched by the Plastic Welding Machinery Division of Huizhou Lijing Automation Equipment Co., Ltd. (formerly Southern Lijing). The equipment adopts a high-quality digital automatic frequency tracking system with memory storage function. When changing molds, it automatically finds the frequency without manual adjustment, and it supports three welding modes—time, energy, and power—which can be switched freely to adapt to the process requirements of different products.
The equipment uses a coaxial direct-pressure design, which provides balanced pressure application and increases welding precision. It is equipped with a horizontal screw design for easy mold adjustment; the welding limit system prevents flash on the workpiece after welding. It offers functions including plastic fusion, insertion, forming, riveting, spot welding, cutting, and stitching. By changing the welding horn, one machine can be used for multiple applications. The overall machine structure is rationally designed and aesthetically pleasing.
This machine combines a 15K 4200W high-power model with automatic frequency tracking technology. The 4200W high power output, together with a welding range of ≤Φ300mm, enables welding of large-size plastic products. The digital automatic frequency tracking system eliminates manual frequency adjustment when changing molds, and the three modes—time/energy/power—meet multiple process requirements. It is especially suitable for production scenarios of medium-to-large plastic products with multiple varieties and frequent mold changes.
2. Eight Core Advantages
Digital automatic frequency tracking system, no adjustment required when changing molds
The high-quality digital automatic frequency tracking system has memory storage function. When changing molds, it automatically finds the frequency without manual adjustment. At startup, it automatically tracks the frequency, ensuring the equipment always operates at the resonant frequency. The ultrasonic energy output is more stable, providing good batch-to-batch consistency.
Three welding modes, freely switchable
It supports three welding modes—time mode, energy mode, and power mode—which can be switched freely according to the process requirements of different products. One machine meets various welding process requirements and is especially suitable for products with strict welding precision requirements.
High-power output, welding range ≤Φ300mm
With 4200W power output and strong driving force, the welding range is ≤Φ300mm and the welding stroke is 100mm. It is suitable for welding larger plastic products, with good welding stability and the ability to support high tensile force and high-pressure requirements.
Coaxial direct-pressure design, high welding precision
The machine body adopts a coaxial direct-pressure design with balanced pressure application, ensuring uniform pressure distribution on the contact surface between the welding horn and the workpiece. This effectively improves welding precision and consistency, reducing defective products caused by uneven pressure.
Welding limit system to prevent glue overflow
The equipment is equipped with a welding limit system to precisely control welding depth. After welding, workpieces do not have glue overflow, the product appearance is neat and beautiful, reducing post-processing steps.
Horizontal screw design for easy mold adjustment
Equipped with horizontal screw design, mold installation and adjustment are simple and fast, greatly shortening mold change time and improving production efficiency.
One machine for multiple uses, change the welding head for multiple applications
The equipment has functions such as welding, embedding, forming, riveting, spot welding, cutting, and stitching. By changing the welding head, one machine can achieve multiple applications to meet the welding needs of different products.
Reasonable structure design, beautiful appearance
The overall structure design is reasonable, the layout of each functional unit is scientific, and the appearance is beautiful and elegant. The machine base is stable, ensuring long-term stable operation.
3. Working Characteristics
Intelligent: Digital automatic frequency tracking, automatically finds frequency when changing molds without adjustment
Flexible: Time, energy, and power modes can be switched arbitrarily to adapt to various processes
Quick: Each welding time is adjustable from 0.01-9.99 seconds, and most welding can be completed within 0.1-0.5 seconds
Strength: Welding strength can be close to the strength of raw materials, supporting high tensile and high pressure requirements
Quality: Can meet watertight and airtight welding requirements, no damage to plastic parts during welding
Economic: No screws or glue required, no need for a large number of fixtures and adhesives, reducing labor and saving costs
4. Detailed Technical Parameters
Machine Model: NK-S1542Z
Working Frequency: 15KHz
Output Power: 4.2KW
Working Power Supply: AC220V 50/60Hz
Working Air Pressure: 0.6MPa
Welding Range: ≤Φ300mm
Welding Stroke: 100mm
Machine Dimensions: 1000×800×1850mm
Equipment Weight: 180KG
Frequency Tracking System: Digital automatic frequency tracking system (with storage memory)
Welding Modes: Time Mode / Energy Mode / Power Mode
Design Features: Coaxial direct-press design, welding limit system, horizontal screw design
Support for non-standard customization is available. Specific parameters are subject to the actual model. If you have special requirements, please contact us.
5. Applicable Materials
The equipment is suitable for most common thermoplastic materials:
ABS｜PP｜PE｜PC｜PS｜PVC｜PMMA (acrylic)｜PA (nylon)｜PPS｜PBT｜PETG｜ABS and PC blends
The above are commonly weldable materials. The actual welding effect needs to be confirmed based on material characteristics and product structure. Samples are welcome for testing.
6. Typical Application Scenarios
Household appliances: electric mosquito swatter, large-diameter impeller, electrical accessories, appliance housings
Automotive manufacturing: car door panels, instrument panels, sun visors, headlights, bumpers, interior trim parts
Electronics: large electronic product housings, battery casings, chargers, adapters
Home appliance industry: appliance housings, electrical accessories, filter element assemblies
Medical industry: plastic parts for large medical devices
Others: hollow boards, large daily necessities, sporting goods
7. 15K 4200W Auto Frequency Tracking vs 15K 4200W Standard Model · Comparison Reference
Frequency tracking method: Standard model uses manual frequency adjustment; Auto frequency tracking model uses digital automatic frequency tracking, no adjustment needed when changing molds
Storage memory: Standard model: none; Auto frequency tracking model: yes, stores welding parameters
Welding modes: Standard model: single/limited; Auto frequency tracking model: switchable among time, energy, and power modes
Applicable scenarios: Standard model is suitable for batch production of fixed varieties; Auto frequency tracking model is suitable for production with multiple varieties and frequent mold changes
Operational convenience: Standard model requires frequency adjustment when changing molds; Auto frequency tracking model is ready to use after mold change, more convenient
The auto frequency tracking model adds intelligent frequency tracking and multiple welding modes on the basis of the standard model, making it more suitable for medium-to-large plastic product production scenarios with multiple varieties and frequent mold changes.
8. Why Choose Us
Lijing Automation, formerly known as Nanfang Lijing, was established in 1997, focusing on R&D and manufacturing of ultrasonic equipment for nearly 30 years
The plastic welding machine division has been deeply engaged in the plastic welding field with solid technical accumulation
15KHz + 4200W high-power configuration, welding range ≤Φ300mm, suitable for larger plastic products
Digital automatic frequency tracking + three welding modes, no adjustment needed when changing molds, strong process adaptability
Coaxial direct-pressure design + welding limit system, high welding accuracy, prevents adhesive overflow
Products exported to 100+ countries and regions, CE certified, compliant with international standards
The company owns 70+ national patents and software copyrights, and is a national high-tech enterprise
Service outlets are available in multiple cities across China, with timely after-sales response
Supports non-standard customization; welding horns, fixtures, and automation configurations can be customized according to customer needs
9. Service Process
Customer consultation → Requirements communication → Free sampling → Solution quotation → Contract signing → Production and manufacturing → Installation and commissioning → Operation training → After-sales support
10. Free Sampling Service
Huizhou Lijing Automation Equipment Co., Ltd. provides free sampling service for customer-supplied materials! You can send the plastic parts to be welded to us, and we will use the equipment to test the actual welding results to ensure they meet your requirements before making a purchase decision, giving you zero-risk procurement.
11. Contact Us
Welcome to call us for consultation or leave a message online. We will provide you with detailed technical solutions and quotations.
Factory direct sales, customization supported, looking forward to working with you!
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