Integrated Punch-Knife Cutting for Aligned Packaging Blanks
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Solution Overview
Problem
Existing methods for cutting packaging material into individual blanks are inefficient, leading to misalignment and waste, requiring multiple stations and increasing costs.
Innovation Solution
An arrangement comprising a punch, die, and knife that form a coordinated punch pattern, allowing for simultaneous punching and cutting of packaging material into individual blanks, with adjustable alignment and reduced material waste.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional separate punching and cutting stations are used, then operational flexibility is maintained, but manufacturing precision and productivity deteriorate due to misalignment and multiple processing steps
Solution Approach 1:
The patent combines the punching and cutting operations into a single integrated station. The punch and knife are positioned adjacent to each other, with the punch forming a punch pattern and the knife simultaneously cutting along the pattern. This merging eliminates misalignment issues between separate stations and improves manufacturing precision while reducing the number of required stations.
2Productivity
If multiple separate stations are used for punching and cutting, then operational flexibility is maintained, but productivity deteriorates due to increased processing time and space
Solution Approach 1:
The patent enables continuous operation by performing punching and cutting in a single sequential motion at one station. The punch first forms the punch pattern, then the knife immediately cuts along the pattern without requiring the material to be transferred or repositioned to another station. This continuous action eliminates idle time and improves productivity.
3Manufacturing precision
If traditional cutting methods are used, then material waste is acceptable, but manufacturing precision deteriorates due to misalignment
Solution Approach 1:
The patent replaces the traditional mechanical alignment system (separate stations requiring physical positioning) with a coordinated system where the punch pattern itself serves as the guide for the knife. The knife is positioned adjacent to the punch and follows the punch pattern, eliminating the need for complex mechanical alignment mechanisms and reducing material waste from misalignment.
Data Source
Figure 1a~1b
Figure 2a
Figure 2b~2d
AI summary
An arrangement (100) for cutting a web of packaging material (10) into individual blanks (20) comprising a punch (130) having a punch edge (132) that forms a punch pattern (135), a die (110) arranged opposite the punch (130) and comprising a die edge (112, 114), and a knife (120) comprising a knife edge (122), the knife (120) being arranged adjacent to the die (110), such that the die edge (112, 114) and the knife edge (122) form an opening (125) that corresponds to the punch pattern (135), wherein the punch (130) is movable into the opening (125) for punching the punch pattern (135) in the packaging material (10), and the knife (120) is movable towards the punch (130), to cut the packaging material (10) and form an individual blank (20) that has a blank end (26) which is aligned with the second section (135-2) of the punch pattern (135).