Ink-jet Head Resin Filter Plate Mechanical Bonding
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing ink-jet heads face issues with separation of the filter plate when either the flange or filter plate is made of resin, as the adhesive fails to exhibit sufficient adhesion, leading to potential leakage and color mixing.
Innovation Solution
An ink-jet head design featuring a passage component made of resin and a filter plate with a higher melting point, where the filter plate is fixed using radially-expanding protrusions that embed into holes in the passage component, ensuring secure attachment without relying solely on adhesive strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If adhesive is used to bond the flange to the filter plate, then the filter plate is fixed to the passage component, but the adhesive cannot exhibit sufficient adhesion when either the flange or filter plate is made of resin, leading to separation
Solution Approach 1:
The patent replaces the chemical bonding mechanism (adhesive) with a mechanical bonding mechanism. The protrusion formed on the filter plate mechanically engages with the recess in the passage component, creating a physical interlock that does not depend on adhesive properties. This mechanical substitution ensures reliable bonding even when resin materials are used, resolving the adhesion insufficiency problem.
Solution Approach 2:
The patent changes the bonding mechanism from chemical (adhesive-based) to mechanical (interlocking structure). By introducing the protrusion-recess geometry, the bonding strength is no longer dependent on adhesive parameters but on the mechanical fit and engagement between the protrusion and recess, thereby achieving sufficient bond strength with resin materials.
2Strength
If both the flange and filter plate are made of metal, then the adhesive exhibits sufficient adhesion, but the device complexity increases and manufacturing cost rises
Solution Approach 1:
The patent replaces the chemical bonding system with a mechanical interlocking system, eliminating the need for adhesive application processes and reducing material complexity. The protrusion-recess mechanical bond works effectively with resin materials without requiring additional adhesive layers, thereby simplifying the overall construction.
Solution Approach 2:
The patent extracts and eliminates the adhesive from the bonding system, replacing it with a purely mechanical interlocking mechanism. This removal of the adhesive component simplifies the material composition and reduces device complexity while maintaining bonding strength through the geometric interlock of the protrusion and recess.
3Reliability
If the filter plate is securely fixed to prevent separation, then color mixing is prevented, but the manufacturing process becomes more complex
Solution Approach 1:
The patent merges the positioning and fixing functions into a single integrated protrusion-recess structure. The protrusion on the filter plate and the recess in the passage component work together as a unified mechanical interlocking system that simultaneously achieves secure fixation and maintains manufacturing simplicity, avoiding the need for separate adhesive application and curing processes.
Solution Approach 2:
By replacing the multi-step adhesive bonding process with a single-step mechanical interlocking assembly, the patent achieves secure filter plate fixation while simplifying the manufacturing process. The protrusion-recess mechanism provides inherent positioning and fixation in one operation, eliminating the complexity of adhesive application, alignment, and curing steps.
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 effectively reduces the risk of filter plate separation, maintains effective filtration, and prevents color mixing by ensuring a secure bond between the filter plate and passage component, even when made of different materials.
Implementation Method 1
heating the protrusion and pressing the filter plate to the annular face, in such a manner that the melted protrusion is embedded in at least one of the holes
Data Source
AI summary
An ink-jet head has a passage component made of resin and a filter plate through which ink is filtered. The filter plate is fixed to the passage component and has a melting point higher than that of the passage component. The filter plate has an annular region and an inner region, and holes are formed through the filter plate in the annular and inner regions. The passage component has a filter support face that is in contact with the annular region but out of contact with the inner region. A holder is formed on the filter support face. The holder penetrates through at least one of the holes formed in the annular region and covers the other face of the filter plate.