Pneumatic Clamping Apparatus for Flexographic Plate Mounting
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Solution Overview
Problem
Current methods for mounting flexographic plates onto imaging cylinders are time-consuming and require manual operation, especially for partial-format plates, and existing automation solutions are complex and expensive.
Innovation Solution
A clamping apparatus with magnetized elements and an inflatable hose system that allows for automatic clamping and release of flexible plates of varying formats and thicknesses onto an imaging cylinder, using a combination of magnetic attraction and air pressure to secure the plates without the need for adhesive tape.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If adhesive tape is used to mount flexographic plates onto the cylinder, then the plates can be secured, but the mounting process becomes very time consuming
Solution Approach 1:
The patent replaces the manual mechanical process of applying adhesive tape with an automated pneumatic clamping system. The clamping bar, actuated by pneumatic cylinders, automatically secures the plate to the cylinder surface, eliminating the time-consuming manual taping process while maintaining reliable plate fixation.
Solution Approach 2:
The clamping system is designed to automatically secure and release plates without requiring manual intervention for each operation. The pneumatic actuation system enables the clamping bar to self-engage and self-disengage from the plate, making the mounting process efficient and repeatable.
2Productivity
If a clamping bar is used to secure full-size plates, then mounting is faster, but the method only works with full format plates and cannot accommodate partial format plates
Solution Approach 1:
The clamping bar is designed with adjustable positioning capabilities along the cylinder surface. This dynamic adjustment allows the clamping bar to accommodate plates of various sizes and formats by changing its position and orientation, enabling the same mechanism to handle both full-format and partial-format plates efficiently.
Solution Approach 2:
The clamping bar system is designed as a universal mounting mechanism that can secure different types of plates (full-size, partial-size, different orientations) using the same basic clamping action. The system's versatility comes from its ability to adapt to various plate configurations while maintaining the same fundamental clamping principle.
3Reliability
If manual mounting with adhesive tape is used for partial-format plates, then plates can be secured, but the process is highly time consuming and requires multiple operations
Solution Approach 1:
The patent replaces the multi-step manual taping process with a single automated pneumatic clamping operation. The clamping bar, driven by pneumatic cylinders, rapidly secures partial-format plates in one action, eliminating the need for multiple taping operations and significantly improving mounting efficiency.
Solution Approach 2:
The clamping bar is pre-positioned and spring-loaded to automatically engage with the plate upon contact. This preliminary positioning ensures that partial-format plates are quickly and reliably secured without requiring precise manual alignment or multiple adjustment 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
Enables efficient, automated, and cost-effective mounting of full-format and partial-format flexographic plates onto imaging cylinders, reducing manual labor and operational time while accommodating different plate types and sizes.
Implementation Method 1
at least one magnetized element close to or on the surface of the cylinder, such that a metal bar made of a material attracted to the magnetized element placed on a plate clamped at the one edge and close to a magnetized element maintains a force on the plate towards the surface of the cylinder
Implementation Method 2
The clamping device also includes an inflatable hose arranged in the interior of the base body and adapted to move the clamping device in the first radial direction when pressure is applied to inflate the hose
Data Source
Figure 1A~1B
Figure 1C
Figure 2
AI summary
A method for fastening plates onto an imaging cylinder (100), and an apparatus that includes one or more clamping devices (109). Each clamping device (109) includes a clamping bar and an air hose (121) that when inflated lifts the clamping bar so that one end of a plate (113) can be placed between the surface of the clyinder. The imaging cylinder includes magnetized elements (129) on or close to the surface. A metal bar (131) is placed on the plate near the magnetized element to hold the plate that is already clamped at one end. The apparatus is operative to fasten flexible plates, metal back plates and non metal back plates onto an imaging cylinder. Embodiments of the apparatus can work with plates of different material, thickness and format onto an image cylinder.