Pneumatic Ink Slider Sealing in Printing Machines
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Solution Overview
Problem
Existing printing machines face challenges in achieving a sealing effect between ink sliders and side walls, leading to ink penetration and difficulties in cleaning and adjusting the color sliders, which is exacerbated by the need for regular greasing that eventually fails over time.
Innovation Solution
The implementation of a design where ink sliders with obliquely tapered heads and radial shafts are used in conjunction with compressed air to create an excess pressure that counteracts ink penetration, minimizing gaps and eliminating the need for grease by maintaining a controlled air flow through bores and grooves in the end walls.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If paint sliders are greased to prevent ink penetration, then sealing effect is improved, but maintenance complexity increases and grease eventually degrades over time
Solution Approach 1:
The patent replaces the mechanical grease-based sealing system with a pneumatic sealing system. Compressed air is supplied through bores in the side walls and end walls to create an air cushion between the paint sliders and the ink chamber walls, eliminating the need for grease and reducing maintenance requirements.
Solution Approach 2:
The patent uses compressed air (pneumatics) to create a sealing effect. Air is supplied through bores in the side walls and end walls to form an air cushion that prevents ink penetration, replacing the conventional grease-based mechanical sealing approach.
2Object-affected harmful factors
If gaps between paint sliders and side walls are reduced, then ink penetration is prevented, but adjustment of color sliders becomes more difficult
Solution Approach 1:
The patent uses compressed air supplied through bores in the side walls and end walls to create an air cushion in the gaps between paint sliders and side walls. This pneumatic sealing prevents ink penetration while maintaining sufficient gap size for easy adjustment of color sliders.
Solution Approach 2:
The patent introduces compressed air as an intermediary substance between the paint sliders and the ink chamber walls. This air cushion acts as a mediator that prevents direct contact between ink and the gap areas, solving the ink penetration problem without requiring tight mechanical fits.
3Object-affected harmful factors
If regular greasing is performed to maintain sealing, then ink penetration is reduced, but operational time and maintenance effort increase
Solution Approach 1:
The patent implements a self-service sealing system where compressed air is automatically supplied through bores in the side walls and end walls to maintain the air cushion. This eliminates the need for manual greasing operations, reducing maintenance time and effort while continuously preventing ink penetration.
Solution Approach 2:
The patent replaces the manual greasing process with an automated pneumatic system. Compressed air is continuously supplied through bores to maintain the sealing effect without requiring periodic manual intervention for greasing, thereby reducing maintenance time.
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 effectively prevents ink penetration into gaps, reduces maintenance needs, and ensures consistent ink layer thickness by maintaining a controlled air flow, enhancing the operational efficiency and reliability of the printing machine.
Implementation Method 1
a sealing effect cannot be achieved in the area of sliders, in particular paint sliders, or between sliders and side walls... an excess pressure of a fluid can be built up during operation of the machine in such a way that the fluid flows between the sealing surface and the roller body forms a sealing flow film
Data Source
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AI summary
The invention relates to a processing machine, in particular a printing machine, comprising a unit having a storage container, and method for operating a storage container in a unit of a processing machine, in particular a printing machine, wherein the storage container comprises a roller (01) and a base (03) which delimit a storage chamber (04) for a medium, and wherein one or more sliders (06) are arranged along an edge of the base (03) to form, together with the roller (01), an outlet gap (13) for the medium. The invention is based on the problem of creating alternative processing machines having a unit and an alternative method for operating a storage container in a unit, more particularly a printing unit, of a processing machine. According to the invention, the problem is solved in that in the region of the slider(s) (06), pneumatic means are provided to seal the supply chamber (04) with respect to the medium.