U-Shaped Holding Element for Stamping and Scoring Tool
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Solution Overview
Problem
The clamped mounting of punching and creasing lines in existing tools causes the carrier plate to expand, leading to dimensional inaccuracies and potential groove fractures during the production of folding box blanks, resulting in uneven and imprecise folding.
Innovation Solution
A U-shaped holding element with two free legs and a web is used to clamp the punching and/or creasing lines, preventing the transmission of clamping forces to the carrier plate and maintaining dimensional accuracy by centering the lines and allowing self-alignment during the punching process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If clamped mounting of punching and creasing lines is used in the carrier plate, then the lines are securely held in position, but the carrier plate expands and loses dimensional accuracy
Solution Approach 1:
The holding element is divided into two functional parts: the clamping function (securing the line) and the positioning function (maintaining carrier plate dimensions). The clamping force is applied locally at the line-holding interface, while the carrier plate structure with bridges provides dimensional stability, segmenting the force transmission paths.
Solution Approach 2:
The holding element acts as an intermediary component between the punching/creasing lines and the carrier plate. It transmits the clamping force to secure the lines while its specific geometric design (with cutouts for bridges) prevents direct force transmission that would cause carrier plate expansion, thus mediating between the conflicting requirements.
2Reliability
If clamped mounting of creasing lines is used, then the lines are retained in the carrier plate, but the lines may shift relative to the counter plate causing groove fractures
Solution Approach 1:
The holding element's geometry (U-shape with specific leg dimensions) allows it to self-center the punching and creasing lines during insertion. The elastic material enables automatic adjustment and centering of the lines within the holding element, ensuring consistent positioning without requiring additional adjustment mechanisms.
Solution Approach 2:
The elastic material properties of the holding element allow for controlled deformation under clamping load. The material's elasticity enables the holding element to adapt to the line dimensions while maintaining secure retention, and the geometric parameters (leg spacing, web thickness) are optimized to provide both retention force and positioning accuracy.
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 ensures constant dimensional accuracy and precision in the punching and creasing process, preventing undesired expansion of the carrier plate and reducing the risk of groove fractures, thereby producing consistent and accurate folding box blanks.
Implementation Method 1
At least one elastic holding element is arranged in the carrier plate, in whose groove the punching and/or creasing line is held in a clamped manner so as not to fall out
Data Source
Figure 1~2
Figure 3a~3d
Figure 4a~4d
AI summary
The invention relates to a stamping and scoring tool, particularly for producing folding box blanks, comprising a carrier plate in which there is at least one recess for receiving at least one stamping and/or scoring rule, in the form of a strip steel die. The aim of the invention is to provide a stamping and scoring tool that allows constant adjustment of folding box blanks and increases the dimensional consistency of the carrier plate. To that end the invention proposes at least one elastic holding element for clamping and detachably holding the stamping and/or scoring rule, said holding element being insertable into the recess and/or into an additional recess of the carrier plate and being detachably held therein.