Grooving Device Sliding Blade Mechanism for Cardboard Wear Reduction
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Solution Overview
Problem
Current machinery for grooving cardboard sheets, especially for creating trapezoidal folds, is complex and prone to wear due to manual adjustments and fixed pivot connections, making it unsuitable for efficient and long-lasting use in automated production.
Innovation Solution
A cutting head with sliding and interchangeable blade-holder supports and a piston-driven mechanism that reduces wear and simplifies mounting, allowing for precise and quick grooving of various shapes, including V-shaped and trapezoidal grooves, using a brushing contact system instead of a fixed pivot and incorporating elastic means for blade return.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fixed pivot connection is used to mount the blade-holder support, then the structure is rigid and stable, but wear and stress on components increase, reducing reliability
Solution Approach 1:
The blade-holder support is designed to slide along the piston rather than being fixed to it. This dynamic mounting allows the support to move relative to the piston during operation, reducing stress concentrations and wear at any single connection point, thereby improving component durability and reliability
Solution Approach 2:
The mounting system is segmented into separate components: the piston, the blade-holder support, and the sliding connection interface. This segmentation allows each component to be optimized independently and facilitates easier maintenance and replacement, reducing overall system complexity while improving reliability
2Adaptability or versatility
If manual adjustment mechanisms are used for blade positioning, then adaptability is improved, but ease of operation deteriorates due to complex adjustments
Solution Approach 1:
The blade-holder support can slide along the piston to different positions, allowing dynamic adjustment of blade depth and positioning. This sliding mechanism provides adaptability for different grooving requirements while maintaining operational simplicity through a single degree of freedom movement
Solution Approach 2:
The sliding blade-holder support mechanism serves multiple functions: it positions the blade at different depths, accommodates different blade angles, and allows easy blade replacement. This multi-functionality provides versatility without requiring multiple separate adjustment mechanisms, thus maintaining ease of operation
3Productivity
If a single passing grooving operation is used, then productivity is improved, but manufacturing precision deteriorates due to complex software control requirements
Solution Approach 1:
The grooving operation is segmented into two distinct blade movements: the piston drives the blade forward for cutting, while the blade-holder support slides along the piston for positioning. This segmentation of functions allows simple mechanical control of each movement independently, achieving precise groove geometry through mechanical means rather than complex software control
Solution Approach 2:
The dynamic sliding of the blade-holder support along the piston during the grooving operation allows real-time adjustment of blade position and depth. This dynamic positioning capability enables precise control of groove geometry while maintaining high productivity through continuous motion without requiring complex programming
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 enables efficient, long-lasting, and simplified grooving operations, reducing wear and stress on components, allowing for precise control and easy mounting of blades, thus enhancing production efficiency and adaptability in automated systems.
Implementation Method 1
elastic means for blade return
Data Source
AI summary
The present invention refers to a grooving device (1) comprising grooving means (7, 8, 10, 11) for realizing a grooving line on a sheet, said grooving means (7, 8, 10, 11) comprising: - A first (7) and a second (8) blade-holder support arranged one opposite the other in such a way as to allow the application of a first (10) and of a second blade (II), one facing the other according to a pre-determined penetration angle (tt) in the sheet, said first (7) and said second blade-holder support (8) being eliding in such a way as to allow a lowering/lifting of the blades that can be applied on them; - An operating device (4, 5, 6) for controlling the sliding of said first and second blade-holder support, said operating device comprising a piston (4) that alides in the grooving device (1) and a pair of fixing pins (5, 6), each one fixed on one part to a respective blade- holder support. In accordance with the invention, on the opposite part, said pins (5, 6) are maintained in contact in a sliding manner along a surface of the piston (4).