Wind Turbine Rotor Blade Joint Gap Adhesive Bonding

The invention extracts the adhesive from the traditional large-area application method and concentrates it into a precisely controlled joint gap between rotor blade elements. This is achieved through positioning devices that create a defined gap and adhesive introduction devices that deliver adhesive only where needed, eliminating the time-consuming large-area application while maintaining bonding strength through concentrated adhesive placement.

The invention applies local quality by concentrating the adhesive in a specific localized region (the joint gap) rather than distributing it over large areas. The positioning devices and adhesive introduction devices ensure that adhesive is placed precisely where required for bonding, with controlled quantity and distribution, achieving effective bonding with minimal adhesive and reduced processing time.

The invention replaces the mechanical pressure application system with a positioning-based system. Instead of using external pressure devices to distribute adhesive, the invention uses positioning devices to create a defined joint gap and adhesive introduction devices to deliver adhesive precisely into this gap. The adhesive's own viscosity and flow properties, combined with the controlled gap dimensions, achieve proper distribution without external pressure, thereby eliminating the mechanical stresses that would result from pressure application.

The invention changes the key parameter from applied pressure to gap dimension control. By precisely controlling the joint gap size through positioning devices and adjusting adhesive introduction parameters (flow rate, viscosity, temperature), the invention achieves proper adhesive distribution without the need for external pressure, thus avoiding the generation of mechanical stresses in the rotor blade.

The invention introduces feedback mechanisms through sensors that detect the adhesive filling level in the joint gap in real-time. This feedback allows for precise control of the adhesive introduction process, ensuring optimal adhesive distribution and bonding quality. The feedback system enables the use of fast-hardening adhesives by providing real-time information about adhesive placement, allowing operators to make immediate adjustments to achieve reliable bonds before the adhesive sets, thereby maintaining bonding reliability while improving manufacturing efficiency.

The invention performs preliminary actions by precisely positioning the rotor blade elements to create the optimal joint gap before adhesive introduction. The positioning devices pre-establish the correct geometry and alignment, and the adhesive introduction devices are pre-positioned to deliver adhesive exactly where needed. This preliminary preparation enables the use of fast-hardening adhesives by ensuring optimal bonding conditions are already in place, achieving reliable bonds quickly without the need for slow-hardening materials.

The invention extracts the excess adhesive that would normally be pressed out of the joint gap and eliminates it through precise control of the adhesive introduction process. The positioning devices create a defined joint gap with specific dimensions, and the adhesive introduction devices are controlled to deliver exactly the right amount of adhesive needed to fill this gap. This extraction of the excess adhesive elimination approach maintains ease of manufacture through automated controlled application while significantly reducing material waste.

The invention enables the adhesive application system to serve itself by using the joint gap dimensions and adhesive properties to automatically control the adhesive distribution. The positioning devices establish the gap that defines the adhesive quantity needed, and the controlled introduction process allows the adhesive to self-distribute within the gap boundaries without requiring external pressure to force it out. This self-service mechanism simplifies the application process while preventing material waste through precise quantity control.