Mobile Adhesive Dispensing for Large Wind Turbine Blade Moulds
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Solution Overview
Problem
The production of large wind turbine blades faces challenges in adhesive dispensing efficiency and quality due to long cycle times, material waste, and uneven adhesive distribution, particularly with existing systems being costly and unsuitable for various mold types.
Innovation Solution
A mobile quick adhesive dispensing method using high-capacity adhesive mixers, guided vehicles, and a PLC-controlled system to accurately and efficiently dispense adhesives on large wind turbine blades, ensuring uniform coverage and minimizing positional deviations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If fixed-point adhesive dispensing is used with manual transfer, then equipment complexity is reduced, but adhesive dispensing time increases and production efficiency decreases
Solution Approach 1:
The patent employs a mobile adhesive dispensing system that can dynamically move along the blade length, transforming from static fixed-point dispensing to dynamic continuous dispensing. This resolves the contradiction by enabling the system to adapt its position and speed to match production requirements, thereby improving efficiency without excessive complexity
Solution Approach 2:
The patent replaces manual mechanical transfer operations with an automated mobile dispensing system controlled by PLC. This substitution eliminates manual intervention, reduces transfer time, and prevents adhesive curing before application, resolving the efficiency-loss contradiction
2Area of stationary object
If adhesive dispensing time is extended to cover large blade areas, then adhesive coverage is improved, but adhesive curing occurs during dispensing reducing quality
Solution Approach 1:
The mobile dispensing system moves continuously along the blade at controlled speeds, enabling large-area coverage to be achieved in reduced time. The dynamic motion prevents adhesive curing during dispensing while ensuring complete coverage, resolving the contradiction between area and quality
Solution Approach 2:
The system implements continuous adhesive dispensing without interruption or manual transfer, maintaining uninterrupted coating across the entire blade surface. This continuous action ensures uniform coverage and prevents curing gaps, resolving the area-quality contradiction
3Device complexity
If manual adhesive transfer is used, then equipment cost is reduced, but material waste increases due to adhesive curing
Solution Approach 1:
The automated mobile dispensing system replaces manual transfer operations, eliminating the time delay that causes adhesive curing and material waste. The direct dispensing from mixing to application ensures near-complete material utilization, resolving the cost-waste contradiction
Solution Approach 2:
The continuous dispensing process eliminates idle transfer time where adhesive would cure and waste. By maintaining uninterrupted flow from mixer to application point, the system maximizes material utilization and minimizes waste, resolving the contradiction
4Adaptability or versatility
If separated adhesive dispensing system and head are used, then system adaptability is improved, but coordination between components deteriorates reducing dispensing efficiency
Solution Approach 1:
The patent integrates the adhesive dispensing system and dispensing head into a unified mobile platform with synchronized control. This merging ensures coordinated movement and operation, eliminating coordination delays while maintaining adaptability through the mobile design, resolving the efficiency-adaptability contradiction
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The method achieves rapid and precise adhesive dispensing, preventing curing issues and improving production efficiency by ensuring all areas are coated, reducing material waste, and optimizing adhesive distribution.
Implementation Method 1
a screw conveyor (303) connected to the mixing device (301) and configured to convey the mixed adhesives (200) to the adhesive dispensing head (304)
Implementation Method 2
wherein the mixing device (301) is provided with a weight sensor (320)
Implementation Method 3
A series of new energy industries represented by the wind power industry face industry challenges in cycle time reduction and efficiency improvement, especially in the production of wind turbine blades
Data Source
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Figure 3
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AI summary
Disclosed is a mobile quick adhesive dispensing method for a wind turbine blade moulded by a large mould, including the steps of installation, pre-inspection of high-capacity adhesive mixers, conveying of the high-capacity adhesive mixers, preparation for adhesive dispensing, adhesive dispensing, receding from a turning arm and landing of the high-capacity adhesive mixers. By the method, heavy-duty guided vehicles moving at a constant speed drive the high-capacity adhesive mixers to move at a constant speed, thereby achieving good consistency and small positional deviations of adhesive dispensing of the large wind turbine blade mould, and avoiding bonding defects of blades. Through the cooperation of a plurality of high-capacity adhesive mixers and receding devices, the adhesive dispensing to large wind turbine blades can be completed within 30 min, thereby preventing a situation that part of adhesive dispensed areas have been cured while part of areas are not coated with adhesives because the large wind turbine blade mould is too large. The adhesive dispensing can be completed quickly and efficiently through the automatic control of a PLC circuit, thereby realizing automated adhesive dispensing production of wind turbine blades in batches.