Laser Sheet Cutting Layout for Compact Cardboard Processing
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Solution Overview
Problem
Existing laser cutting machines for stiff materials like corrugated cardboard are large, expensive, and lack flexibility and safety for use in public environments, leading to inefficiencies in space utilization and increased costs due to high energy consumption and safety concerns.
Innovation Solution
A compact laser cutting device with a controlled transporting system and optical system that allows for precise movement of sheets in one dimension, using one or more lasers with adjustable power and a suction system to minimize dust and smoke, enabling safe and efficient cutting in public spaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional laser cutting machines are used for stiff materials, then cutting capability is achieved, but device size becomes large and expensive
Solution Approach 1:
The patent divides the cutting system into separate functional modules: a laser source unit, a transport system for the sheet material, and a control system. This segmentation allows each component to be optimized independently and reduces the overall footprint compared to conventional integrated laser cutting machines.
Solution Approach 2:
Instead of moving the laser beam in two dimensions across a stationary sheet (conventional approach), the patent transports the sheet material through the laser beam in one dimension while the laser remains relatively stationary. This dimensional change simplifies the mechanical system and reduces device size.
2Productivity
If high power lasers are used for cutting, then cutting speed increases, but energy consumption increases
Solution Approach 1:
The laser operates in periodic pulses rather than continuous mode, with the duty cycle adjusted according to material thickness and cutting requirements. This periodic operation maintains cutting speed while significantly reducing average energy consumption compared to continuous high-power operation.
Solution Approach 2:
The laser power is dynamically adjusted during the cutting process based on real-time feedback from sensors that monitor cutting progress and material properties. This dynamic control ensures optimal cutting speed at each moment while minimizing energy waste.
3Ease of operation
If laser cutting is performed in public environments, then accessibility improves, but safety concerns increase due to dust and smoke
Solution Approach 1:
The patent incorporates a suction system that captures dust and smoke at the source (the cutting zone) and converts this harmful byproduct into a controlled exhaust stream. The suction system is integrated with the transport system, creating a contained environment that protects public spaces while maintaining accessibility.
Solution Approach 2:
An intermediary exhaust system acts as a mediator between the cutting process and the public environment. This system includes filters and exhaust ducts that intercept harmful particles before they can reach the public space, allowing the laser cutting to be performed safely in accessible locations.
4Manufacturing precision
If precise cutting patterns are required, then manufacturing quality improves, but processing time increases
Solution Approach 1:
The cutting path is pre-programmed and optimized before the actual cutting process begins. The control system calculates the most efficient path that achieves precise cutting patterns while minimizing processing time, allowing the laser to operate at optimal speed throughout the cut.
Solution Approach 2:
The transport system operates continuously during the cutting process, moving the sheet material through the laser beam without interruption. This continuous motion eliminates positioning delays between cuts and maintains constant cutting speed, achieving precise patterns efficiently.
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 provides a cost-effective, flexible, and safe cutting solution for a variety of materials, reducing energy consumption and waste while allowing for precise cutting patterns, even in limited spaces, enhancing operational efficiency and safety.
Implementation Method 1
at least one laser (1) for producing at least one laser beam suitable for processing the sheet
Implementation Method 2
at least one laser beam cuts the transport plane along a cutting direction
Implementation Method 3
a suction system for suction of impurities generated during the cutting
Data Source
AI summary
The present invention relates to an improved cutting device and an improved cutting method, specifically for processing and cutting sheets of stiff material, such as cardboard and others, in which the sheets are supplied and moved in a stable way along a first direction, and a laser cutting unit (or at least the resulting laser beams) is moved along a second, substantially perpendicular direction, in which by coordinating the two movements, a desired cut is executed in the sheets.