Nut Runner Wrench Suction Path for Stable Fastener Pickup
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Solution Overview
Problem
Existing automatic bolt fastening devices face challenges in efficiently and stably holding and conveying fastening members, particularly due to the need for high vacuum degrees and complex sealing mechanisms, which increase costs and complexity.
Innovation Solution
A nut runner device with a detachable unit and air passage system that uses a large intake air flow rate to create a strong suction force, allowing for stable holding and conveying of fastening members without the need for hermetic seals, enabling the device to handle various types of fastening members with a single main body.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If vacuum suction is used to hold fastening members, then magnetization is avoided, but high vacuum degrees and complex sealing mechanisms are required which increase costs and complexity
Solution Approach 1:
The invention uses a blowing hole to blow air onto the fastening member, creating a pneumatic field that generates suction force through pressure differential. This pneumatic approach replaces complex vacuum sealing mechanisms with a simpler air blowing system that achieves stable holding without requiring hermetic seals.
Solution Approach 2:
The invention changes the parameter approach from maintaining high vacuum degree to controlling air flow rate and pressure differential. By adjusting the air blowing parameters (flow rate, pressure), the system achieves stable holding force without the need for complex vacuum maintenance and sealing mechanisms.
2Reliability
If vacuum suction is used to hold fastening members, then magnetization is avoided, but the structure becomes complex with sealing mechanisms, increasing costs
Solution Approach 1:
The air blowing hole creates a pneumatic suction system that eliminates the need for complex vacuum seals and maintenance systems. This simplifies manufacturing by removing expensive sealing components and reduces operational costs by eliminating vacuum system maintenance requirements.
Solution Approach 2:
The air blowing mechanism uses simple, inexpensive components (air holes, blowers) instead of expensive vacuum seals and maintenance equipment. The system accepts lower component costs in exchange for simpler, more manufacturable design.
3Adaptability or versatility
If a single main body device is used to handle various types of fastening members, then versatility is improved, but the ability to stably hold different sizes and weights becomes challenging
Solution Approach 1:
The air blowing system is designed to be dynamically adjustable, allowing the blowing force and air flow rate to be modified based on the specific fastening member being handled. This dynamic adjustment capability enables a single device to adapt to various sizes and weights while maintaining stable holding.
Solution Approach 2:
The air blowing hole design creates a universal holding mechanism that can accommodate different types of fastening members. By adjusting air flow parameters rather than changing physical components, the single main body device achieves multi-functionality across various fastening member types.
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 device achieves stable and efficient fastening and conveying of fastening members with a simplified structure, reduced costs, and the ability to handle multiple types of fastening members without the need for complex sealing, ensuring consistent suction force regardless of air passage airtightness.
Implementation Method 1
air that is sucked from the suction port to the discharge port via the air passage passes by the tip portion of the wrench and a fastening member that is fitted to a tip of the wrench
Data Source
AI summary
A nut runner device includes a main body including spindles, and support portions that support the spindles rotatably around a longitudinal axial line, a detachable unit that is detachably connected to a tip of the main body, and includes a wrench that is disposed coaxially with the spindles and is rotatable integrally with the spindles and an air passage that extends inside of the spindles and the detachable unit in a direction along the longitudinal axial line, and connects a discharge port provided in the spindle, and a suction port that opens to a tip surface of the detachable unit, wherein a tip portion of the wrench is disposed in the suction port, and air that is sucked from the suction port to the discharge port 20c via the air passage passes by the tip portion of the wrench and a fastening member fitted to a tip of the wrench.