Self-Adjusting Print Head Modules for Single-Pass Inkjet Printers
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Solution Overview
Problem
The configuration and exchange of print head modules in single-pass inkjet printers are complex and time-consuming due to the need for precise manual adjustments, leading to extended downtime and complicated mechanical guide elements.
Innovation Solution
The print head modules are designed to be self-adjusting, with a hanging fastening system that allows for easy installation and removal, utilizing gravity for automatic orientation and a raising/lowering device with offset ball socket bearings for precise positioning, eliminating the need for manual adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If manual adjustment of print heads is performed to achieve precise positioning, then manufacturing precision is improved, but device complexity and time loss increase
Solution Approach 1:
The print head module automatically positions itself relative to the print bar through a self-adjustment mechanism. When the module is mounted on the print bar, guide elements and adjustment mechanisms enable the print heads to self-align with the running track without requiring external manual intervention, thus achieving precise positioning while reducing operational complexity
Solution Approach 2:
The print head module is pre-adjusted and pre-positioned during manufacturing or initial setup. The module arrives at the installation site already configured with precise internal alignment, so that when mounted on the print bar, it requires minimal or no additional adjustment to achieve the required positioning precision
2Manufacturing precision
If manual adjustment of print heads is performed, then manufacturing precision is improved, but loss of time increases
Solution Approach 1:
The self-adjustment mechanism automatically positions the print heads when the module is mounted on the print bar, eliminating the need for time-consuming manual adjustment procedures. The guide elements and automatic alignment features enable the system to perform the positioning function autonomously, significantly reducing configuration time while maintaining precision
Solution Approach 2:
Precise positioning is achieved through pre-adjustment during manufacturing. The print head module is prepared in advance with all necessary alignment settings, so that installation involves simply mounting the pre-configured module without requiring time-intensive on-site adjustments
3Manufacturing precision
If complicated mechanical guide elements are used for positioning, then manufacturing precision is improved, but device complexity increases
Solution Approach 1:
Instead of using complicated fixed guide elements, the system employs a self-adjustment mechanism where the print head module actively positions itself using integrated adjustment features. This approach achieves precise positioning through a simpler, more flexible mechanism that adapts automatically rather than relying on complex predetermined mechanical guides
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 solution simplifies the configuration and exchange of print head modules, reducing downtime and enabling rapid realignment and maintenance, while ensuring precise alignment and improved printing quality.
Implementation Method 1
hanging fastening makes self-adjustment into the printing position which is fixed to the unit possible, in particular without complicated mechanical auxiliary constructions
Data Source
AI summary
A single-pass inkjet printer is specified with a running path for guiding a printing medium along a running direction and with a number of print-head modules which extend over the running path in a transverse direction. It is provided here that the print-head modules are arranged in each case such that they can be introduced, in a manner which is suspended and self-adjusting, substantially in a vertical direction into a printing position, in which they are fixed to the unit. A single-pass inkjet printer of this type affords the possibility of a simple manual exchange of print-head modules, as a result of which the down times are shortened.