X-Y Work Tool Carriage Layout for Accurate High-Speed Processing
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Solution Overview
Problem
Existing work tool actuators for conveyor systems face issues with wear and accuracy due to heavy longitudinal support structures, requiring frequent rail adjustments and skilled maintenance, and have inefficient drive train designs that complicate high-speed movement and fluid pressure control for processing workpieces.
Innovation Solution
The apparatus features a lightweight open web base panel structure with resiliently loaded rollers and a compact drive system, including a servo motor-powered pump for precise fluid pressure modulation, integrated within a housing that allows for adjustable conveyor height and a safety guard assembly to prevent access during operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a heavy longitudinal support structure is used to provide sufficient strength and stiffness, then the structural integrity is improved, but the wear along the rails and rollers increases, causing accuracy degradation
Solution Approach 1:
The patent changes the material parameters by using aluminum alloy instead of traditional heavy materials, and modifies the structural parameters by implementing an open web configuration. This reduces the overall weight and mass of the longitudinal support structure while maintaining sufficient structural integrity, thereby reducing rail and roller wear to preserve movement accuracy over time.
Solution Approach 2:
The patent employs composite construction by combining aluminum alloy material with an open web structural configuration. This composite approach creates a lightweight yet sufficiently strong support structure that balances structural integrity requirements with the need to minimize wear on rails and rollers, thus maintaining reliability.
2Manufacturing precision
If the roller wheels are adjusted to remove slack with the rails, then the immediate accuracy is improved, but the adjustment cannot account for wear across the full length of the rails
Solution Approach 1:
The patent implements adjustable roller assemblies that can be dynamically repositioned along the rail length. This dynamic adjustment capability allows the rollers to maintain optimal contact with the rails at different positions, compensating for wear patterns across the full length of the rails and maintaining precision without requiring complex disassembly procedures.
Solution Approach 2:
The roller assembly is segmented into adjustable components that can be independently positioned. This segmentation allows different sections of the roller assembly to be adjusted according to local wear patterns on the rails, enabling precise compensation across the entire length without requiring uniform adjustment that would compromise accuracy at any specific location.
3Ease of manufacture
If the motive units are located away from the conveyor, then the drive system layout is simplified, but the drive train mass increases, requiring larger capacity actuators
Solution Approach 1:
The patent relocates the motive units from a lateral positioning (away from the conveyor) to a vertical positioning (above the conveyor). This dimensional change allows the drive system to be more compact and reduces the length of drive train components, thereby reducing overall mass while maintaining ease of assembly and access for maintenance.
Solution Approach 2:
The drive system components are nested in a compact arrangement where the motive unit, drive train, and carriage are vertically stacked. This nesting reduces the horizontal footprint and minimizes the length of drive train components, reducing mass while keeping the layout simple and accessible for manufacturing and maintenance.
4Speed
If large capacity rotational actuators are used to move the carriages at high speeds, then the speed capability is improved, but the wear along the rails and rollers increases
Solution Approach 1:
The patent changes the mass parameter of the longitudinal support structure by using lightweight aluminum alloy construction. This reduction in mass decreases the inertial forces and loads on the rails and rollers during high-speed acceleration and deceleration, allowing high speed capability while reducing wear and extending the durability of the rail and roller components.
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
This design enhances the accuracy and durability of work tool movement, reduces maintenance needs, and enables efficient high-pressure fluid application and control, improving processing efficiency while minimizing the complexity and mass of the drive train and fluid delivery system.
Implementation Method 1
resiliently loaded rollers and a compact drive system, including a servo motor-powered pump for precise fluid pressure modulation
Data Source
AI summary
A system 10 for processing work products 12 includes a housing 14 to contain the components of the system, which include a conveyor 16 for carrying the work products through the housing and past a work tool 18 being supported and moved relative to the conveyor by an X-Y actuator apparatus 20. A scanning system 21 is positioned in the housing 14 upstream of the X-Y actuator for ascertaining selected physical parameters of the work products so as to determine the manner in which the work tool 18 operates on the work products. The housing includes a compartment 22 in which is mounted a high-pressure pump system 23 to provide high pressure working fluid for the work tool 18. Also, a compact guard system 24 is positioned at the outlet 26 of the housing to prevent individuals from reaching into the housing from the exterior.