NN600 Plate Clamping CNC Underpinner for Photo Frames

The ST-NN600 is a specialized CNC underpinner featuring a unique “Plate Clamping” system.
Unlike standard top-press machines, it utilizes adjustable table clamps to hold the frame securely from the base, preventing any shifting during the nailing process.

Best For:
Precision joining of complex or delicate frame profiles.

Technical Specifications
Plate Clamping Technology:
Unlike standard machines that use a single hold-down rod (which can cause wide frames to tip or tilt), the NN600 features a massive Heavy-Duty Pressure Plate. This distributes clamping force evenly across a large surface area of the frame.
Wide Profile Specialist:
Specifically engineered for Wide and Flat Mouldings (up to 150mm width). It is the ideal solution for manufacturing large mirror frames, canvas floaters, and wide decorative borders that are difficult to secure with standard joiners.
Non-Slip Stability:
The broad clamping surface ensures zero movement or slippage, even on slippery or high-gloss finishes, preventing “step” unevenness at the joint.
Heavy-Duty Chassis:
Built with a reinforced, weighted base to withstand the higher clamping pressures required for joining large, heavy hardwood frames.
Multi-Position Nailing:
Allows the operator to drive V-nails at multiple positions across the wide joint to ensure structural integrity for heavy frames.
Parameter Value
Model NN600 (Plate Clamp)
Clamping Method Plate Clamping System (Wide Surface)
Max Moulding Width 150 mm (6″) Upgrade
Max Moulding Height 100 mm (4″)
V-Nail Capacity 220 V-Nails
V-Nail Sizes 5, 7, 10, 12, 15mm
Operation Type Pneumatic (Foot Pedal)
Air Pressure 0.6 – 0.8 Mpa (87 – 116 PSI)
Power Supply Not Required (Air Only)
Machine Weight 100 kg (220 lbs)
Dimensions 700 x 600 x 1200 mm

Description

Product Overview: ST-NN600

The ST-NN600 (Plate Clamping) is engineered for precision frame joining. Featuring an advanced table-mounted plate clamping mechanism and 9-stage CNC programming, it delivers superior stability and prevents kickback during nailing, making it ideal for wider profiles and delicate materials.

Core Features: Precision with NN600 Plate Clamping

  • Advanced Plate Clamping Technology
    The NN600 distinguishes itself with a table-mounted clamping mechanism. It automatically grips the frame moulding from the sides/base during the cycle. This prevents the “kickback” or shifting that can occur with traditional top-clamping machines.
  • Dual-Gear Stability
    Equipped with a “Dual-Gear” holding system, it ensures absolute stability for joining wider or slippery profile materials.
  • 9-Stage CNC Programming
    Driven by a sophisticated nine-stage CNC system, the machine can execute complex nailing patterns (5-nail stacking + 9 positions) in a single pass, boosting efficiency by 40%.
  • Universal Material Fit
    Whether it’s solid wood, high-density MDF, foam, or plaster moulding, the adjustable plate clamps adapt to various densities without leaving pressure marks.

Technical Specifications

Specification Details
Model ST-NN600 (Plate Clamping)
Machine Type CNC Underpinner / Frame Joiner
Clamping Method Plate Clamping (Side/Base Grip)
Max Frame Width 130mm (13cm)
Max Frame Thickness 100mm (10cm)
V-Nail Sizes 5mm, 7mm, 10mm, 12mm, 15mm
Air Pressure 6-8 kg/cm² (90-120 psi)
Joining Angles 90°, 120°, 135°

Frequently Asked Questions (FAQ)

Q: What is the advantage of “Plate Clamping” (NN600) over “Active Clamping” (NN400/500)?
A: Active Clamping presses from the top, which is great for general framing. Plate Clamping (NN600) holds the frame from the table level. This is superior for preventing the two pieces of moulding from sliding apart horizontally when the V-nail is driven in.
Q: Can I save my frame settings?
A: Yes, the NN600 features an Intelligent CNC System that allows you to start efficient operation with one button. You can switch between different frame jobs instantly.
Q: Is this machine suitable for delicate frames?
A: Absolutely. The plate clamping system distributes pressure evenly, making it less likely to dent or damage delicate frame surfaces compared to heavy top-down pistons.

Additional information

Weight 130 kg
Dimensions 80 × 80 × 130 cm

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Are You A Trading Company Or A Manufacturer?
A: We are a professional manufacturer specializing in picture framing machinery. Unlike trading companies, we produce our machines in our own factory, ensuring strict quality control, factory-direct prices, and immediate technical support. You are welcome to visit our facility or request a video tour.
How Do I Choose The Right Machine For My Factory?
A: It depends on your production volume and material. For mass production of wooden frames, we recommend the Auto Double Miter Saw (NC Series) and Auto Underpinner (NN Series). For aluminum frames, check our CT400 and MM200 series. Feel free to contact our sales team for a tailored solution.
Can The Machine's Voltage Be Customized?
A: Yes, absolutely. While our standard industrial voltage is 380V/50Hz (3-phase), we can customize the motors and electrical systems to match your local standard, such as 220V/60Hz (USA), 415V (UK/Australia), or 220V Single Phase. Please specify your voltage requirements when requesting a quote.
Is The Machine Difficult To Install And Operate?
A: No, our machines are designed for "Plug & Play." We ship them 90% pre-assembled. You typically only need to connect the air source and power supply. We provide detailed operation manuals and step-by-step video tutorials to ensure you can start production within hours of unboxing.
What Is The Lead Time For Production?
A: For standard models (like NC500, NN400), we often have stock ready for immediate shipment. For customized orders or large batches, the production time is typically 7 to 15 working days.
How Do You Pack And Ship The Machinery?
A: We use export-standard fumigation-free plywood cases to protect the machine from moisture and impact during sea freight. We can arrange shipping to your nearest port (CIF) or deliver directly to your door (DDP) in select countries.
What Is Your Warranty Policy?
A: We provide a 1-year warranty on core components (motors, PLC systems). For after-sales support, we offer lifetime remote service. Our engineers can guide you via video call or WhatsApp to solve any operational issues instantly. Spare parts are always in stock.
Do You Supply Consumables (Blades/V-Nails)?
A: Yes, we are a one-stop supplier. We provide high-quality carbide saw blades (for wood/aluminum) and various sizes of V-nails/wedges (Uni/AL type) compatible with our machines, ensuring the best cutting and joining results.

OUR FACILITIES

XKY Framing Factory Facilities with CNC machines

Equipped with advanced CNC machining centers and standardized assembly lines, our manufacturing base ensures precision in every component. We maintain strict quality control protocols to guarantee that every machine meets international durability and performance standards.

OUR STAFF

R&D Engineers and Technical Experts

Our team consists of senior R&D engineers and technical experts with over 20 years of experience in the framing industry. From mechanical design to multilingual after-sales support, our professionals are dedicated to solving your production challenges.

OUR PLANS

Industry 4.0 Smart Framing Production Plans

We are committed to leading the "Industry 4.0" revolution in picture framing. Our goal is to continuously upgrade our "SmartFrame" series, helping global factories transition from manual labor to fully automated, high-efficiency production.