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Model: SL-TWSP-RRS
Refine primer-coated flat panels before the next finishing layer with vertically moving sanding frames that work above a fixed conveying surface. Automatic thickness detection adjusts the sanding position to each incoming workpiece, while belt correction, dust blowing, and rear cleaning brushes support a cleaner and more controlled surface-preparation process.
Application Materials:
Application Scenarios:
The primer sanding machine prepares coated flat panels for the next finishing layer by leveling primer surfaces and removing visible coating irregularities before topcoat application. A vertically moving sanding belt works across the panel while the fixed worktable keeps the conveying path aligned with adjacent equipment. Automatic thickness detection and pneumatic sanding-frame movement help the process follow changing workpiece dimensions without interrupting line flow.
Before production, you can match the sanding setup to the panel and primer condition:
Three standard widths cover different panel formats. SL-TWSP-RRS1300 processes widths from 40 to 1300 mm, SL-TWSP-RRS1000 covers 40 to 1000 mm, and SL-TWSP-RRS630 handles 40 to 630 mm. Power and machine weight vary with the selected width.
The worktable remains fixed while the sanding frames move vertically to establish the working clearance. At the machine inlet, the thickness-detection section reads each incoming panel before the workpiece reaches the sanding zone. The control system uses this information to coordinate the sanding position as panels move through the machine.
A floating double-frame arrangement allows the abrasive belts to work across the primer surface while the panel continues along the conveyor. The front frame also uses an eccentric-shaft lifting mechanism that can raise the sanding section during standby or an emergency stop.
Each sanding shaft uses its own hanging plate and adjustment structure, allowing belt position to be corrected at the sanding frame. Oscillating air nozzles clear sanding dust from the abrasive belt during operation, while rear dust-removal brushes collect residual particles after the workpiece passes the sanding section.
These functions keep sanding, belt guidance, and dust removal close to the working area rather than relying on separate manual steps between processes.
You can integrate the equipment with a UV roller coating line after primer curing and before the next coating layer. It also sits naturally within the wider surface treatment equipment range when your process combines sanding with dust removal or other surface-preparation stages.
Different working widths, sanding-frame quantities, and lifting arrangements can be configured around the panel format and production-line setup. Final sanding settings should follow the actual primer condition, workpiece thickness, and surface requirement before the next coating stage.
Custom primer sanding machines of different sizes are available for various products, and the parameters will vary accordingly. Please contact us.
The primer sanding machine features a floating double-frame structure. Pneumatic steel rollers move vertically with high precision to sand moving workpieces, eliminating coating flaws and uneven paint surfaces while enhancing gloss. It ensures precise sanding without white edges for primer and thick paint edges, laying a solid foundation for subsequent coating adhesion and superior surface finish.
The core components of our primer sanding machine undergo rigorous screening and testing, and all are from reputable brands, such as Japanese Kuroda solenoid valves, Korean Omron photoelectric sensors, low-voltage electrical components from Korean LS and Chinese Chint, PLCs and frequency converters from Taiwan Delta, and MCGS LCD screens, ensuring stable and durable continuous production.
As the source factory, we can provide high-quality equipment at competitive prices, helping reduce your procurement costs and maximize your overall return on investment. Furthermore, to accommodate the diverse production budgets and processing requirements of different customers, we also offer flexible customization options, including a single sanding frame and worktable-lifting mechanisms.
This primer sanding machine features a fixed worktable design. Double-sanding frames move vertically to adjust machining clearance, facilitating production line connection and avoiding workpiece edge damage from the sanding belt.
Thanks to its advanced configuration, this primer sanding machine's feed inlet supports automatic, precise detection of each workpiece's thickness and transmits the data to the PLC control system, enabling a fully automated sanding process.
The sanding axis features a sturdy 9mm seamless steel pipe paired with an eccentric shaft core and an NSK bearing. It's carefully crafted to maintain a balance error of just around ±0.02mm, preventing any missed or uneven sanding.
The primer sanding machine utilizes Korea elastic Nitrile-butadiene rubber as the sanding roller, incorporating both hard and cushion features to ensure proper stretching of the sand belt and to prevent over-sanding of the primer.
Each spindle is securely mounted on a separate sturdy hanging plate to ensure stable and reliable operation. Sanding deviation can be conveniently corrected by reversing the screw rotation, with each turn providing a precise 0.1mm adjustment.
The front sanding frame employs a cylinder-driven eccentric shaft mechanism for lifting while in standby mode. It can rapidly elevate the shaft during emergency shutdowns, thereby effectively preventing surface scratches and material damage.
A swing-type air-blowing device is mounted above the sanding belt to continuously clear dust during processing. It optimizes sanding quality and noticeably extends the service lifespan of the sanding belt, making the process more efficient.
Equipped with dust removal brushes at the rear of the sanding frames to effectively clear residual dust. The sanding frame face features knobs that can adjust the sanding belt if it is misaligned; these knobs are intuitively designed and easy to operate.
When your substrate, coating, or space is unusual, or when you have unique technical requirements, our custom services may be the best way to help you achieve your goals.
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