Removable Transport Device for Digital Plotter Maintenance
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Solution Overview
Problem
Current digital plotters for deformable materials like fabrics and plastic films face significant productivity losses due to frequent maintenance needs, as the adhesiveness of the resin layer degrades over time, requiring lengthy stoppages for cleaning and resin layer replacement, which cannot be quickly addressed with existing belt replacement mechanisms.
Innovation Solution
The plotter design allows for the transport device, including the conveyor belt and motorization system, to be removably associated with the main structure, enabling rapid replacement and maintenance without halting the entire machine, thus minimizing downtime by decoupling the transport device from the main structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the transport device is integral with the main structure, then the structure is simple and stable, but maintenance operations require complete machine stoppage causing productivity loss
Solution Approach 1:
The transport device is divided into separate modules (conveyor belt, motorization system, support structure) that can be independently removed from the main structure. This segmentation allows maintenance operations to be performed on the transport device without stopping the entire machine, thereby maintaining productivity while introducing controlled complexity through modular design.
Solution Approach 2:
The transport device is extracted as a removable assembly from the integral main structure. The conveyor belt and motorization system can be detached and removed from the plotter body, enabling maintenance operations to continue or be performed without complete machine stoppage, thus resolving the contradiction between productivity and structural simplicity.
2Ease of repair
If the belt is kept integral with the motorisation system, then the assembly is stable and simple, but replacement requires disassembly and lengthy stoppages
Solution Approach 1:
The motorization system is segmented from the conveyor belt, allowing the belt to be replaced independently. The motorization system remains as a separate assembly that can stay in place while the conveyor belt is removed and replaced, significantly reducing maintenance stoppage time compared to replacing the entire integral assembly.
Solution Approach 2:
The conveyor belt is extracted as a separate replaceable component from the motorization system. This extraction allows the belt to be quickly removed and replaced without disassembling the motorization system, thereby reducing maintenance stoppage time while maintaining operational stability through the retained motorization system.
3Productivity
If multiple plotters are arranged to compensate for stoppage losses, then productivity is maintained, but device complexity and space requirements increase
Solution Approach 1:
The transport device is designed with dynamic reconfigurability, allowing it to be quickly assembled, disassembled, and replaced. This dynamic capability enables a single plotter to maintain continuous operation by rapidly replacing worn conveyor belts without needing multiple backup machines, thus avoiding the complexity and space requirements of having multiple plotters while maintaining productivity.
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 drastically reduces maintenance stoppage times, allowing for quicker resin layer maintenance and polymerization, thereby enhancing productivity and reducing the need for multiple machines in large-scale production settings.
Implementation Method 1
the belt is sprinkled with a layer of sticky resin, which maintains the fabric or other material well adherent to the active portion
Implementation Method 2
waiting for the new resin layer to complete polymerisation
Data Source
AI summary
Plotter for digital printing, includinga main structure, arranged to be rested on a support surface;a printing head, associated with the main structure and movable along a substantially horizontal transverse direction, for a predetermined stroke in alternating and opposite directions;a transport device, arranged to lead a material to be printed forwards along a longitudinal direction which is substantially horizontal and perpendicular to the transverse direction.The transport device is removably associated with the main structure by means of connection means. The connection means is arranged to assume an operating configuration, in which the transport device is connected to the main structure in a substantially rigid manner with respect to direct movements along the longitudinal direction and with respect to direct movements along the transverse direction, and a non-operating configuration, in which the transport device is movable with respect to the main structure.