Coil-Fed Laminar Cutting with Movable Locking for Long Formats

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Solution Overview

Problem

Existing laser or plasma cutting apparatuses for laminar material wound in coils are inflexible in managing format changes and are not compact in size, limiting their ability to cut pieces with varying longitudinal extensions without requiring a cutting station of sufficient length.

Innovation Solution

The apparatus employs a movable third locking device and an electronic control unit to tension and position laminar material during cutting, allowing for flexible format changes and cutting pieces of any longitudinal extension by dividing the cutting process into distinct steps within a compact cutting station, with the third device acting as both a tensioning and support element.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the cutting station is made long enough to accommodate pieces of any longitudinal extension in a single step, then any piece size can be cut in one operation, but the apparatus size becomes excessively large and loses compactness

Engineering Contradiction:

Improveability to cut pieces of any longitudinal extensionVSAvoidcutting station length

Core Design Contradiction:

Adaptability or versatilityVSLength of stationary object

Solution Approach 1:

The cutting process is divided into multiple sequential steps instead of requiring a single long cutting station. The apparatus performs partial cuts in one step, then repositions the material and completes the cutting in subsequent steps, effectively segmenting the cutting operation to fit within a compact station.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The introduction of a movable third locking device that can translate along the longitudinal direction enables dynamic repositioning of material during the cutting process. This movable element allows the system to adapt to different piece lengths and reposition material between cutting steps, providing versatility without requiring a proportionally large cutting station.

Inventive Principle:

Principle #15Dynamics

2Adaptability or versatility

If a movable third locking device is added to enable flexible format changes and multi-step cutting, then adaptability improves, but device complexity increases

Engineering Contradiction:

Improveflexibility in managing format changesVSAvoidnumber of locking devices and control mechanisms

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The movable third locking device serves multiple functions: it acts as a support element during cutting, provides tensioning to keep material flat, and enables repositioning between cutting steps. By combining these functions in a single device, the patent avoids the need for separate mechanisms for each function, thereby reducing overall complexity while maintaining high adaptability.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The electronic control unit coordinates the locking devices to automatically manage the multi-step cutting process, including repositioning and tensioning operations. This automated coordination reduces the need for complex manual control mechanisms and operators, simplifying the overall system while enabling flexible format changes.

Inventive Principle:

Principle #25Self-service

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 flexible management of format changes and maintains a compact apparatus size, allowing cutting of pieces with any longitudinal extension by distributing the cutting process over multiple steps within the same operative cutting area, reducing the need for extensive cutting station lengths and supporting the material to prevent bending.

Implementation Method 1

apparatus for laser or plasma cutting of pieces from laminar material wound in coil

Methodology Applied

Scientific EffectLaser heating: Laser

Implementation Method 2

apparatus for laser or plasma cutting of pieces from laminar material wound in coil

Methodology Applied

Scientific EffectPlasma heating: Plasma

Data Source

PatentUS11273524B2Apparatus for laser or plasma cutting of pieces of laminar material wound in coil

Publication Date: 2022.03.15 DALLAN S R L CASTELFRANCO VENETO

AI summary

An apparatus is provided for cutting pieces from laminar material wound in coil using a laser or plasma cutting machine. In one apparatus according to the invention, a cutting station includes at least one moveable cutting head arranged between the station's entrance and exit, and a means to position a portion of laminar material on a cutting plane. The positioning means includes three separate locking devices, each of which can lock on a portion of the laminar material as it passes through the cutting station. The three locking devices are arranged in succession: the first near the cutting station's entrance, the second near the exit, and the third between the first and second locking devices. At least the third locking device is movable, in the space between the other two devices, along a portion of laminar material while the material is kept under tension.