Inkjet Printing for Workpiece Edge Coating
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional methods for coating the narrow sides of plate-shaped workpieces, such as those made of wood or wood-based materials, face challenges in achieving high variability and quality while simplifying logistics and reducing production costs, as they often require multiple edgeband widths and patterns, leading to increased logistical effort and inefficient operation.
Innovation Solution
A device comprising a pretreatment unit, a detection system, and an inkjet printing unit with self-adjusting capabilities, allowing for real-time detection of surface properties and tailored application of pretreatment materials like UV varnishes or thermoplastics to create a high-quality, multi-layered coating with variable thickness and design, accommodating different workpiece dimensions and profiles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional edge banding of different widths and patterns is kept on hand to increase versatility, then adaptability is improved, but device complexity and logistical effort increase
Solution Approach 1:
The inkjet printing device serves multiple functions: it can print different patterns, colors, and designs on workpieces of various sizes without requiring physical changeovers. The system uses a single universal printing head that can be digitally programmed to produce different edge banding effects, eliminating the need to maintain multiple specialized tools and materials in inventory.
Solution Approach 2:
The system changes printing parameters (patterns, colors, thicknesses, designs) through digital control rather than physical reconfiguration. By modifying software parameters and inkjet printing settings, the system can adapt to different workpiece requirements instantly, replacing the need for physical edge banding inventories with digital parameter variations.
2Manufacturing precision
If detection device records dimensions and position of each workpiece individually, then manufacturing precision is improved, but device complexity increases
Solution Approach 1:
The detection device provides real-time feedback on workpiece dimensions and position, which the control system uses to automatically adjust printing parameters. This closed-loop feedback ensures each workpiece is printed with precise dimensions and positioning without requiring complex manual measurement and adjustment procedures.
Solution Approach 2:
Manual or mechanical measurement and adjustment processes are replaced with automated optical or sensor-based detection systems combined with digital control. The detection device automatically captures workpiece characteristics and the control system translates this data into printing instructions, eliminating the need for manual intervention and reducing operational complexity.
3Adaptability or versatility
If multiple edge banding types are maintained for different workpiece dimensions, then adaptability is improved, but loss of substance increases due to unused inventory
Solution Approach 1:
Instead of maintaining physical inventories of different edge banding materials, the system creates digital copies or representations of various edge banding designs through software. These digital patterns are then reproduced on demand using the inkjet printing process, eliminating the need for physical material storage and reducing waste from unused inventory.
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
The solution enables high-quality, variable coating of workpiece narrow sides with reduced logistical complexity and production costs, ensuring uniformity and adaptability to various workpiece dimensions and designs, thereby enhancing the coating process efficiency and quality.
Implementation Method 1
the printing device comprises at least one digital printhead. The printhead can be designed as an inkjet printhead
Implementation Method 2
The pretreatment device is configured to apply a pretreatment material to the surface of the workpiece to be printed... in the case of a continuous coating machine, the first detection module is positioned upstream of the pretreatment module
Data Source
Figure 1
AI summary
The invention relates to an apparatus comprising: at least one pre-treatment device for pre-treating a surface to be coated; a device for causing a relative movement between the pre-treatment device and the workpiece; and at least one printing device, in particular an inkjet printing device, wherein the printing device comprises at least one digital printing head. The pre-treatment device is designed to apply a pre-treatment material to the surface of the workpiece to be printed.