Introduce: What are the characteristics of self-locking tuning screws used in precision printing equipment?

The core value of self-locking tuning screw in precision printing equipment is to rely on high-precision fine adjustment+strong self-locking and anti-loosening+stable connection, adapt to high-speed and vibration conditions, ensure printing quality such as overprint and dot, simplify installation, debugging and maintenance, and improve equipment productivity. The following are its key application features:

Core features and adaptation scenarios

High-precision fine adjustment and positioning to ensure the printing overprint accuracy.

The thread precision can reach ±0.01-0.05 mm, and with the design of multi-segment dislocation thread, gradual pitch or radial grooving, the thread clearance can be eliminated, and the micron-level displacement control can be realized.

It is used for positioning and gap adjustment of core components such as printing plate cylinder, anilox roller, scraper seat and embossing platform, which directly improves overprinter accuracy, dot reduction and ink color uniformity, and reduces rejection rate.

Manufacturing adopts wire rolling/grinding technology and strict quality inspection to ensure the consistency of batch size and performance, and reduce the difference between equipment and debugging time.

Strong self-locking and anti-loosening, resisting high-frequency vibration and impact.

Special structures (such as dislocated thread segments, radial grooves, butterfly-shaped elastic pieces/locking rings, and asymmetrical teeth) generate radial pre-tightening and large friction after screwing in, so as to counteract the loosening trend caused by vibration, and no additional locking parts (such as nuts and spring washers) are needed.

Adapt to the high-speed operation (such as 10000+printing/hour) and frequent start-stop vibration conditions of the printing machine, prevent the displacement of rollers, scrapers and other components, and ensure long-term printing stability.

Part of the design with sealing flange can meet the protection of IP65/IP67, adapt to wet/ink dust environment, and avoid corrosion and foreign matter from entering the thread pair.

Stable connection and long service life, suitable for harsh working conditions.

Commonly used stainless steel, titanium alloy or hard chromium plating/dacromet treatment, giving consideration to wear resistance, ink corrosion resistance and fatigue resistance, extending maintenance cycle.

Multi-section thread or elastic sheet structure disperses stress, reduces local stress concentration, reduces the risk of thread slipping and fracture, and is suitable for long-term repeated fine-tuning scenes.

Some designs (such as built-in compression spring protection) can prevent debris from falling into the cavity of the equipment and protect the precision transmission and printing unit.

Efficient installation and debugging, reducing maintenance costs.

The integrated self-locking design omits nuts, washers and other accessories, reduces the assembly steps, shortens the installation and debugging time, and improves the efficiency of plate changing.

Self-locking operation is simple (such as one-word/plum blossom groove+coaxial locking ring), which can be completed by one person without secondary reinforcement after debugging, reducing labor cost.

It can be disassembled and assembled repeatedly with small attenuation of self-locking performance, which is convenient for disassembly, cleaning and reassembly of parts during maintenance and reduces spare parts and downtime losses.

Compact structure, suitable for narrow installation space

No additional locking parts are needed, the overall size is smaller, and it is suitable for space-limited parts such as printing machine wallboard and ink path system, which simplifies the structural design of equipment.

The head can be designed with countersunk head, flange and thin head, which is suitable for different installation surfaces and anti-rotation requirements, giving consideration to aesthetics and functionality.

Application Scenarios and Selection Points

Recommended characteristics of core function of application site

Plate cylinder positioning controls cylinder clearance and parallelism, micron thread precision and radial grooving self-locking.

The anilox roller/scraper seat can adjust the pressure and angle, and the butterfly-shaped elastic sheet/locking ring structure can prevent vibration and looseness, and wear-resistant coating can be used.

The level/height of the stamping platform is fine-tuned, which ensures the smoothness of multi-segment staggered threads and stable pre-tightening force.

Ink roller gap adjustment and ink quantity control, suitable for asymmetric tooth profile and IP protective flange under high-speed working conditions.

Key differences with ordinary screws

Ordinary screws: rely on nut/washer to prevent loosening, which is easy to loosen under vibration, and the fine adjustment accuracy is low, so it needs to be re-calibrated frequently.

Self-locking tuning screw: integrated self-locking, high vibration stability, micro-adjustment accuracy, longer maintenance period, suitable for high-speed and high-precision requirements of precision printing.