3D Printed Monobloc Protective Element for Flexographic Sleeve Assembly
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Solution Overview
Problem
The assembly procedure for flexographic sleeves is complex and time-consuming, leading to increased production costs due to the elaborate process of attaching L-shaped aluminium blocks to flat rings using screws.
Innovation Solution
A lateral protective element made using 3D printing technology, integrating a register slot with a tapered zone for guided engagement and weight-relief openings for adhesive reservoirs, simplifies the assembly by forming a single piece with the same material as the sleeve, reducing the need for multiple components and simplifying the assembly process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If L-shaped aluminium blocks are fixed by screws to flat rings to create protective elements with register slots, then the structural integrity and precision of the register slot are maintained, but the assembly procedure becomes complex and time-consuming
Solution Approach 1:
The protective element and register slot are merged into a single monobloc component manufactured via 3D printing, eliminating the need to assemble multiple parts (L-shaped aluminium blocks and flat rings) while maintaining the precise register slot geometry required for proper sleeve positioning
2Strength
If multiple components are assembled using screws and adhesives, then the structural strength is ensured, but the assembly time increases
Solution Approach 1:
The protective element is manufactured as a single monobloc component, eliminating multiple assembly steps including screw fastening and adhesive application, thereby dramatically reducing assembly time while maintaining structural strength through the inherent design of the monobloc structure
Solution Approach 2:
The manufacturing method transitions from traditional subtractive or assembly-based approaches to additive manufacturing (3D printing), which enables complex geometries to be produced as single pieces with optimized material distribution, achieving both strength and time efficiency
3Strength
If traditional manufacturing methods are used for protective elements, then the material strength and durability are ensured, but the production costs increase
Solution Approach 1:
The manufacturing approach changes from traditional methods (machining aluminium blocks, applying adhesives) to additive manufacturing (3D printing), which reduces production costs by eliminating multiple processing steps, reducing material waste, and enabling direct fabrication of complex geometries while maintaining material strength through appropriate material selection and printing parameters
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 significantly reduces assembly time and costs by streamlining the assembly process, allowing for faster production and customization through additive manufacturing techniques like FDM and SLS, while maintaining structural integrity and precision.
Implementation Method 1
said piece is made using a 3D printer
Implementation Method 2
Said piece is preferably joined with an adhesive to said cylinder
Data Source
Figure 1~4
Figure 3
AI summary
The sleeve (1) for flexographic printing comprises a cylinder (2) and a protective element (3) applied on a base of the cylinder (2) and equipped with a register slot (7) that can be engaged by an abutment (8) provided on a mandrel (6) on which the sleeve (1) is mounted, the protective element (3) and the register slot (7) being made as a single piece (9) with the same type of material.