Automated Door Hinge Mounting System with Dual-Stage Alignment
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Solution Overview
Problem
The manual process of mounting door hinges on vehicle pillars is labor-intensive, prone to assembly variations, and results in increased production costs and reduced product quality due to human error, leading to potential deformation and aesthetic issues.
Innovation Solution
An automatic system that includes aligning units using vibration and gravity to position door hinges, grippers for handling and loading, a mounting jig for precise placement, and a bolt runner for automated fastening, reducing manual intervention and enhancing precision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If manual loading and fastening of door hinges is used, then the process is simple and flexible, but labor costs increase and assembly variation occurs
Solution Approach 1:
The mounting system is divided into separate functional modules: a first aligning unit for initial positioning, a second aligning unit for precision alignment, grippers for handling, and automated fastening devices. Each module performs a specific task in the sequence, transforming the manual process into an automated multi-stage operation that reduces labor while maintaining manageability through functional segmentation
Solution Approach 2:
The first aligning unit performs preliminary alignment of door hinges before they are transferred to the second aligning unit for final positioning. This preliminary action prepares the components in advance, allowing the subsequent automated mounting steps to proceed efficiently without requiring complex real-time adjustment mechanisms
2Manufacturing precision
If manual fastening of door hinges is performed, then the equipment is simple, but assembly variation deforms the door and deteriorates appearance
Solution Approach 1:
The alignment process is segmented into two distinct units: the first aligning unit provides coarse positioning to bring door hinges into approximate alignment, while the second aligning unit provides fine-tuned precision alignment. This segmentation allows each unit to be optimized for its specific alignment task, achieving high manufacturing precision without requiring a single overly complex alignment system
Solution Approach 2:
The first aligning unit acts as an intermediary between the hinge storage and the second aligning unit. It prepares the door hinges by removing them from the hinge box and providing initial alignment, serving as a mediator that simplifies the workload of the second aligning unit and enables the overall system to achieve high precision through coordinated multi-stage processing
3Productivity
If automated alignment and mounting systems are implemented, then productivity improves and labor costs decrease, but the system complexity increases
Solution Approach 1:
The automated mounting system is segmented into distinct functional stations: hinge storage, first aligning unit, transfer mechanism, second aligning unit, and automated fastening. This segmentation allows each station to be independently optimized and maintained, improving overall productivity while keeping the complexity of individual components manageable
Solution Approach 2:
The first aligning unit performs preliminary alignment and preparation of door hinges before they reach the second aligning unit. This preliminary action ensures that components are pre-positioned and pre-aligned, allowing the subsequent automated mounting operations to proceed rapidly without requiring complex real-time sensing and adjustment systems, thereby improving productivity while controlling system complexity
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 automatic system improves productivity, reduces labor costs, and enhances product quality by minimizing assembly variations, preventing deformation, and maintaining the external appearance of vehicle doors.
Implementation Method 1
a first aligning unit (110) automatically aligning a plurality of door hinges (3) contained in a hinge box (11), using vibration
Implementation Method 2
a tilting plate (113) coupled to the stand frame (111) such that the tilting plate (113) is tilted up/down
Data Source
AI summary
An automatic system for automatically mounting door hinges to upper and lower seats on pillars of a vehicle body conveyed by a conveying unit may include i) a first aligning unit automatically aligning a plurality of door hinges, ii) a first gripper disposed on one side of a mounting frame fixed to an arm of a first handling robot, and taking out the door hinges from the hinge box, iii) a second aligning unit loading the door hinges, and arranging the door hinges into position at a predetermined mounting angle, iv) a second gripper disposed on the other side of the mounting frame, and unloading the door hinges aligned by the second aligning unit, v) a mounting jig clamping and setting the door hinges into seats on the vehicle body, and vi) a bolt runner bolting the door hinges set in the seats on the vehicle body.