Transverse Crankshaft Punching Tool for High-Force Deep Drawing
Solution Overview
Problem
Punching tools used for deep-drawn plastic strips with containers face challenges in applying high forces without bending, as existing systems struggle to effectively manage the high forces required for separation and cutting without tool deflection.
Innovation Solution
A device employing a crankshaft mechanism with connecting rod elements, where the crankshaft is oriented transversely to the conveying direction and tool movement, and supported by sliding guides to distribute forces evenly, preventing tool deflection and allowing for precise force application through a crank and connecting rod system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If high forces are applied for punching plastic strips with containers, then the punching operation can be performed, but the tools involved undergo deflection
Solution Approach 1:
The tool is divided into multiple sections (first tool section, second tool section, third tool section) that can be independently positioned and supported. Each section is supported by dedicated bearing structures that distribute the high punching forces across multiple support points, preventing deflection while maintaining the necessary punching force.
Solution Approach 2:
Bearing structures are introduced as intermediary elements between the tool and the support structure. These bearings act as mediators that transfer and distribute the high punching forces from the tool to the support structure, preventing direct contact and the resulting deflection while allowing the tool to maintain its punching function.
2Stability of the object's composition
If the tool is supported at multiple points to prevent deflection, then tool stability improves, but the device complexity increases
Solution Approach 1:
Multiple bearing structures are merged into an integrated support system that is part of the larger punching device framework. The bearings are positioned at specific locations along the tool and are supported by the device frame, creating a unified structure that provides stability without requiring separate, complex support mechanisms for each bearing.
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 high-force punching without tool bending, ensuring accurate separation and cutting of deep-drawn containers by distributing forces effectively across the tool's width and length, maintaining tool stability during the punching process.
Implementation Method 1
at least one movement device for a stamping tool has at least one crankshaft lying approximately transversely to the conveying direction of the surface element and transversely to the direction of movement of the stamping tool, to which connecting rod elements are articulated
Implementation Method 2
The punching tool is slidably guided in a frame. The punching tool is held in sliding guides, which are components of the frame, so that the punching tool is slidably guided in the frame
Data Source
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AI summary
In a device for stamping a conveyed sheet element, in particular for stamping a strip with containers formed in it, especially by deep drawing, comprising at least one upper stamping tool and at least one lower stamping tool, which are movable relative to each other for carrying out the stamping, it is provided that at least one movement device for a stamping tool has at least one crankshaft located approximately transversely to the conveying direction of the sheet element and transversely to the direction of movement of the stamping tool, to which connecting rod elements are articulated, the ends of which facing away from the crankshaft being articulated to the stamping tool. A device of the aforementioned type enables stamping with high forces without the occurrence of bending in the tools involved.