Fluid Discharging Device Shared Adjustment Valve Timing
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Solution Overview
Problem
The intermittent application of hot-melt adhesive in manufacturing disposable diapers requires significant time and effort to adjust the open-close timing of valves following periodic repairs or product changes, as the relationship between the adhesive application head and encoder changes, leading to displacement of the adhesive application position.
Innovation Solution
A fluid discharging device with a controller that uses a shared adjustment value to shift the open-close timing of multiple valves simultaneously, reducing the need for individual adjustments and allowing for compensation based on transport velocity, thereby minimizing operational load and data preparation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If individual adjustment of each valve's open-close timing is performed after periodic repair work or product change, then the adhesive application position accuracy is maintained, but the operator time and effort required increases significantly
Solution Approach 1:
The patent combines the adjustment of multiple valves into a single operation by introducing a shared adjustment value that is simultaneously applied to all valves. This merging approach maintains the precision of adhesive application positioning while dramatically reducing the operator's adjustment time and effort, as all valves are adjusted together rather than individually.
Solution Approach 2:
The patent changes the adjustment parameter from individual valve-specific timing values to a single shared adjustment value. This parameter change allows the system to maintain accurate adhesive application positioning across all valves while simplifying the adjustment process, as only one value needs to be input rather than adjusting each valve separately.
2Manufacturing precision
If the relationship between the adhesive application head and encoder is reset after periodic repair work or product change, then the adhesive application position is corrected, but the complexity of the adjustment procedure increases
Solution Approach 1:
The patent extracts the complex individual adjustment procedures for each valve and replaces them with a single simplified operation. By taking out the complexity of adjusting multiple valves separately and replacing it with a unified adjustment mechanism using a shared adjustment value, the system maintains positioning accuracy while significantly reducing procedural complexity.
Solution Approach 2:
The shared adjustment value serves multiple functions simultaneously: it adjusts the open-close timing of all valves, corrects the adhesive application position, and simplifies the adjustment procedure. This multi-functionality reduces the complexity of the adjustment procedure while maintaining manufacturing precision, as one adjustment operation handles what would otherwise require multiple separate operations.
3Manufacturing precision
If the open-close timing of valves is adjusted after changes in transport velocity or equipment alignment, then the adhesive application position accuracy is maintained, but the operational load and data preparation requirements increase
Solution Approach 1:
The patent merges the adjustment operations for all valves into a single operation using a shared adjustment value. This combining approach maintains adhesive application position accuracy while reducing the operational load, as the system can process adjustments more efficiently when using a unified value rather than handling multiple individual valve adjustments separately.
Solution Approach 2:
The patent changes from adjusting multiple individual valve timing parameters to using a single shared adjustment value. This parameter change reduces the amount of data preparation and operational complexity required, while still maintaining the precision of adhesive application positioning across all valves, thereby improving operational efficiency.
Data Source
AI summary
A fluid discharging device that discharges fluid from a plurality of discharge openings towards a continuous sheet member which is continuously transported in a transporting direction. The fluid discharging device includes: a plurality of valves that correspond to the discharge openings and intermittently discharge the fluid from the discharge openings by opening and closing operations; and a controller that controls the opening and closing operations of each of the valves individually depending on a transportation amount of the continuous sheet member. The controller has a shared adjustment value that is represented by a value indicating the transportation amount, the controller shifts open-close timing of at least several valves of the a plurality of valves from a previously-determined open-close timing that the several valves are subject to, based on the shared adjustment value.