Diaper Pants Production Line With Automated Size Change Control
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Solution Overview
Problem
Existing diaper production lines are unable to efficiently produce diapers of all sizes without significant adjustments, including macro and micro adjustments, limiting their ability to meet market demands for customized products.
Innovation Solution
A production line and process that utilizes a high-level control unit to generate control signals for each processing unit, allowing automated adaptation to produce diapers of any size by adjusting dimensions such as absorbent pad length, elastic band width, and height through electronic cam profiles and computerized command and control units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If processing units are designed for specific fixed sizes, then manufacturing precision is maintained, but adaptability to different sizes is limited
Solution Approach 1:
The patent implements dynamic adjustability in processing units through computerized control systems that can modify operational parameters (such as cutting lengths, positioning coordinates, and assembly sequences) in real-time based on the selected diaper size. This allows the same equipment to precisely handle multiple sizes without physical reconfiguration, resolving the contradiction between fixed-precision design and size versatility.
Solution Approach 2:
The system changes operational parameters (dimensions, positions, speeds) through computerized control rather than physical modifications. By storing size-specific parameter sets and automatically loading them when a size change is requested, the system maintains manufacturing precision across all sizes while achieving full adaptability. This parameter-based approach eliminates the need for mechanical reconfiguration.
2Adaptability or versatility
If multiple processing units are added to cover all sizes, then adaptability improves, but device complexity increases
Solution Approach 1:
The patent designs processing units with multi-functionality, where a single cutting unit, positioning system, and assembly mechanism can handle all diaper sizes through computerized parameter adjustment. This universal design eliminates the need for multiple dedicated processing lines for different sizes, reducing overall system complexity while maintaining complete size coverage. The same hardware performs multiple size-specific functions by changing operational parameters.
Solution Approach 2:
The system uses digital copies of size specifications stored in computer memory to control physical processing. Instead of having separate physical configurations for each size, the system creates virtual models of different diaper sizes and uses these digital copies to automatically adjust machine parameters. This approach covers all sizes without adding physical complexity, as the variation is managed through software rather than hardware multiplication.
3Manufacturing precision
If manual adjustments are made for size changes, then manufacturing precision can be maintained, but loss of time increases
Solution Approach 1:
The system performs preliminary actions by pre-storing all size-specific parameters (cutting lengths, positioning coordinates, assembly sequences) in computer memory before production begins. When a size change is requested, the system automatically retrieves and applies the pre-prepared parameter set without requiring manual measurement or adjustment. This preliminary digital preparation eliminates time-consuming manual interventions while maintaining precision.
Solution Approach 2:
The patent replaces manual mechanical adjustment systems with computerized automated control. Instead of operators physically measuring and adjusting components for each size change, a computer system automatically calculates and applies the correct parameters based on stored size specifications. This substitution of mechanical/manual processes with automated digital control dramatically reduces changeover time while preserving manufacturing precision through consistent parameter application.
4Productivity
If automated control systems are implemented, then productivity improves, but device complexity increases
Solution Approach 1:
The computerized control system implements self-service by automatically selecting and applying the appropriate parameter set when a diaper size is specified. The system monitors its own operation, detects size changes, and adjusts parameters without external intervention. This automation improves productivity by eliminating manual setup time, while the self-service nature reduces the need for complex external control mechanisms, balancing automation benefits with system simplicity.
Data Source
AI summary
A line for the production of diaper pants including at least one absorbent pad and a plurality of elastic bands, forming a pants-like structure; the production line includes a first forming unit for forming a composite web from which said absorbent pads are obtained, a second unit for forming elastic bands for forming said elastic bands and an assembly line for assembling the pads and the elastic bands to construct the diaper pants; the assembly line includes a plurality of processing units, each including a computerized command and control unit and a computerized high level control unit in communication with the computerized command and control units in the assembly line; the high level control unit is configured to impart to each computerized command and control unit at least one control signal for the respective processing unit as a function of the size of the diaper pants being produced in the production line.