Workpiece Finishing Apparatus with Coordinated Control Unit
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Solution Overview
Problem
Existing apparatuses for finishing workpieces, such as those made of wood or plastic, face limitations in throughput due to insufficient coordination of operating parameters and speeds among machine components, leading to suboptimal performance and productivity.
Innovation Solution
An integrated control unit is connected to the machining, conveying, and patterning units to optimize operating parameters and speeds, enabling coordinated operation and increased throughput, precision, and quality, particularly through the use of a drop-on-demand printing unit and monitoring with multispectral cameras to adapt and correct patterning processes in real-time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the operating parameters and operating speed of individual machine components are not coordinated, then each component can operate independently, but the overall workpiece throughput and performance are limited
Solution Approach 1:
The patent combines multiple independent machine components (machining unit, conveying unit, patterning unit) into a coordinated system controlled by a central control unit. This merging of control functions enables synchronized operation of all units, optimizing the overall throughput while maintaining individual component functionality. The control unit integrates parameters such as conveying speed, machining speed, and patterning speed to achieve maximum productivity.
Solution Approach 2:
The control unit dynamically adjusts the operating parameters of each machine component based on real-time conditions and requirements. This includes adapting the conveying speed, machining depth, and patterning parameters to optimize performance for different workpiece types and production volumes. The dynamic coordination allows the system to respond flexibly to varying production demands while maintaining high throughput.
2Productivity
If the conveying speed is increased to improve productivity, then more workpieces can be processed, but the patterning quality and machining precision may deteriorate
Solution Approach 1:
The control unit dynamically adjusts the patterning unit's operating parameters in response to changes in conveying speed. When the conveying unit increases speed to improve throughput, the control unit compensates by adjusting patterning parameters such as droplet ejection frequency, material flow rate, and positioning accuracy. This dynamic adaptation ensures that patterning quality is maintained even at higher conveying speeds.
Solution Approach 2:
The system incorporates feedback mechanisms where the control unit continuously monitors the performance of each unit and adjusts operating parameters accordingly. This feedback loop ensures that when conveying speed changes, the patterning and machining units receive real-time adjustments to maintain optimal quality standards. The coordinated control prevents quality deterioration that would otherwise occur at higher speeds.
3Manufacturing precision
If multiple alignment and clamping of workpieces are performed to ensure precision, then finishing quality improves, but processing time increases and productivity decreases
Solution Approach 1:
The system performs preliminary alignment and clamping of workpieces in a single setup before the finishing operations begin. The control unit coordinates the machining and patterning units to operate within this single clamping configuration, eliminating the need for intermediate alignment and re-clamping operations. This preliminary positioning ensures that all subsequent operations can be performed with high precision without additional setup time.
Solution Approach 2:
By maintaining a single clamping setup throughout the entire finishing process, the system enables continuous operation without interruptions for re-alignment or intermediate stacking. The control unit ensures that both machining and patterning operations can be performed continuously on the workpiece in its fixed position, maximizing productivity while maintaining precision through coordinated parameter control.
Data Source
AI summary
Method and apparatus (1) for finishing (2) a workpiece preferably consisting at least in parts of wood, wood materials, plastic or the like, comprising a machining unit (10) for machining the workpiece (2), in particular for shaping and/or coating the workpiece; a patterning unit (20) for patterning, in particular printing on, a surface (2′) of the workpiece; and a conveying unit (30) for inducing a relative movement between the workpiece and the machining unit (10) as well as the patterning unit (20), characterized in that a control unit (40) is provided, which is connected to the machining unit (10), the conveying unit (30) and the patterning unit (20) and is configured to control the machining unit (10), the conveying unit (30) and the patterning unit (20).