Spring String Conveying with Dynamic Speed Adjustment
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Solution Overview
Problem
Conventional devices for conveying spring strings to spring core assembly apparatuses struggle with compensating for length variations, leading to space inefficiencies and reduced operating speeds, as they require buffer zones for length correction.
Innovation Solution
A device comprising a first and second spring conveyor, a sensor device, and a control system that sets relative conveying speeds based on segment lengths, allowing for segment-wise length correction without the need for a buffer zone, thereby reducing space requirements and processing time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a buffer zone is used to accommodate the entire spring string section for length measurement and correction, then length variations can be compensated, but space requirements increase and operating speed decreases
Solution Approach 1:
The spring string is divided into multiple segments, and only the relevant segment is measured and corrected at any given time rather than the entire spring string. This allows length compensation to be performed in a compact space while maintaining precision.
Solution Approach 2:
Length measurement and correction are performed preliminarily on individual segments before they are fully assembled into the complete spring string. This preliminary action on segments enables space-efficient compensation while maintaining overall length precision.
2Manufacturing precision
If a buffer zone is used to accommodate the entire spring string section for length measurement and correction, then length variations can be compensated, but operating speed decreases
Solution Approach 1:
By segmenting the spring string and processing segments individually rather than waiting for the entire string to be assembled, the system can perform length compensation more quickly and continuously, improving operating speed while maintaining precision.
Solution Approach 2:
The segmentation approach allows continuous measurement and correction of spring string segments as they are formed, rather than interrupting production to measure and correct the entire string at once. This continuous action maintains both precision and high operating speed.
3Device complexity
If conventional conveying systems are used without segment-wise speed adjustment, then the system structure is simpler, but uniform spring spacings cannot be achieved when length variations occur
Solution Approach 1:
The conveying system uses dynamic speed adjustment of individual conveyors based on real-time segment length measurements. This dynamic control enables uniform spring spacing even when length variations occur, while keeping the overall system structure relatively simple through selective speed modification rather than complete system redesign.
Solution Approach 2:
The system incorporates feedback from length measurements of spring string segments to automatically adjust conveyor speeds. This feedback mechanism ensures uniform spring spacing by compensating for length variations in real-time, achieving high precision without requiring a fundamentally complex system architecture.
Data Source
AI summary
A device for conveying a spring string (31) has a first spring conveyor (3) and a second spring conveyor (4). By means of a sensor device, in operation, lengths of a plurality of segments of the spring string differing from one another are detected, while the spring string (31) is guided past a sensor (5) of the sensor device arranged in the conveying direction upstream of the second spring conveyor (4). A control device (9) is provided which sets, in an operating state of the device (1) in which both the first spring conveyor (3) and the second spring conveyor (4) convey the spring string (31), time-sequentially a plurality of relative conveying speeds between a conveying speed of the second spring conveyor (4) and a conveying speed of the first spring conveyor (3), depending on the detected lengths.