Perforation Tool with Elastic Stripper for Paper Web Jam Prevention
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Solution Overview
Problem
Existing packaging material production machines often experience paper jams at the preforming station, particularly at higher conveying speeds, which disrupts the production flow and affects the dimensional stability of the filling material product.
Innovation Solution
A perforation tool with a perforation nose and receptacle, kinematically linked for relative movement, introduces perforations that enhance cushioning stability and includes a scraper mechanism to prevent paper web material from sticking, utilizing an elastic mass for optimal perforation and wiper functions to maintain continuous production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the paper web is perforated using a stationary or simple rotary cutting device, then the filling material product can be cut to length, but the paper web material sticks to the cutting device causing paper jams at higher conveying speeds
Solution Approach 1:
The cutting device is designed with a stripper component that performs a relative movement with respect to the perforation nose and receptacle. This dynamic element actively strips the paper web material from the perforation surfaces during the cutting cycle, preventing adhesion and paper jams while maintaining high conveying speeds
Solution Approach 2:
The stripper acts as an intermediary component between the perforation nose/receptacle and the paper web material. It mediates the interaction by actively removing the paper web from the perforation surfaces, preventing direct adhesion and ensuring continuous operation without paper jams
2Stability of the object's composition
If the paper web is perforated to create cushioning cavities, then the dimensional stability of the filling material product is improved, but the paper web material adheres to the perforation tool causing production interruptions
Solution Approach 1:
The stripper component introduces a dynamic relative movement that actively removes paper web material from the perforation nose and receptacle surfaces. This prevents adhesion while maintaining the perforation structure needed for dimensional stability, ensuring continuous production without interruptions
Solution Approach 2:
The stripper extracts and removes the paper web material from the perforation tool surfaces after the perforation action is completed. This separation prevents adhesion and maintains production continuity while preserving the beneficial perforation structure for product stability
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
The solution significantly reduces the risk of paper jams by preventing the paper web from sticking to the perforation tool, ensuring uninterrupted production and enhancing the dimensional stability of the filling material product.
Implementation Method 1
The stripper is formed by an elastic mass, which can be formed, for example, as an elastomer body... Under the action of the retraction forces acting between the perforation nose and the perforation receptacle, the embedding mass is elastically displaced... the elasticity of the elastic embedding mass automatically causes the stripping and frees the perforation nose and/or the perforation receptacle from any paper web material
Data Source
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AI summary
Perforation tool for a device for the machine production of a filling material product to be formed from a single- or multi-layer paper web, wherein the perforation tool is designed for introducing a perforation into the filling material product and comprises: at least one perforation nose, at least one perforation receptacle, wherein the at least one perforation nose and the at least one perforation receptacle are arranged to each other in such a way that, for perforating, the at least one perforation nose can extend and retract relative to the at least one perforation receptacle, and at least one wiper, which is arranged to the at least one perforation nose and/or the at least one perforation receptacle in such a way that, upon extension, perforated filling material product is removed from the at least one perforation nose and/or from the at least one perforation receptacle.