Simultaneous Cutting of Continuous Modules Using Segmented Units

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Solution Overview

Problem

Traditional cutting devices for continuous modules in binding and envelope filling machines face limitations in productivity due to increased stresses and vibrations when accelerating to higher speeds, restricting the maximum speed and sheet separation rate.

Innovation Solution

A device with multiple cutting units and a regulating mechanism that allows for simultaneous cutting of multiple sheets, utilizing a dragging conveyor and sensors to control cutting distances and operations based on printed codes, enabling higher advancement speeds and reduced stress on the module and device.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the acceleration and maximum speed of the continuous module are increased to decrease the duration of the advancement stage, then productivity is improved, but the stresses acting on the continuous module and mechanical members increase excessively

Engineering Contradiction:

Improvesheet separation rateVSAvoidstress on continuous module and mechanical members

Core Design Contradiction:

ProductivityVSStress or pressure

Solution Approach 1:

The cutting operation is segmented into multiple independent cutting units (first cutting unit and second cutting unit) that operate simultaneously on different sections of the continuous module. This allows the module to be cut into multiple sheets in parallel, increasing productivity without requiring higher acceleration speeds that would generate excessive stresses.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The invention transitions from sequential cutting (one cut at a time) to parallel cutting (multiple cuts simultaneously) by adding a spatial dimension to the cutting process. Multiple cutting units are arranged along the length of the continuous module, enabling simultaneous cutting operations that increase throughput without increasing the speed or stress on the module.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Stress or pressure

If the acceleration and deceleration duration are increased to reduce stresses, then the maximum speed is limited by the space available, but productivity decreases

Engineering Contradiction:

Improvestress on continuous moduleVSAvoidsheet separation rate

Core Design Contradiction:

Stress or pressureVSProductivity

Solution Approach 1:

The cutting process is divided into multiple independent cutting units that can operate simultaneously. Each cutting unit performs its cutting operation within the available space, allowing the system to maintain lower acceleration profiles (reducing stress) while achieving higher overall productivity through parallel operations.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The multiple cutting units enable continuous cutting operations along the length of the continuous module. While one cutting unit is operating, others can simultaneously perform cutting, ensuring that the useful action (cutting) continues without interruption throughout the available space, thereby maintaining high productivity with reduced stress.

Inventive Principle:

Principle #20Continuity of useful action

3Productivity

If traditional single cutting unit operation is used, then device complexity is low, but productivity is insufficient for high-speed binding and envelope filling machines

Engineering Contradiction:

Improvesheet separation rateVSAvoidnumber of cutting units

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The cutting system is segmented into multiple independent cutting units, each capable of autonomous operation. This segmentation allows the system to achieve high productivity through parallel processing while keeping each individual cutting unit relatively simple in design, thus managing overall device complexity through modular architecture.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Each cutting unit is designed as a universal module that can independently perform the complete cutting function. This multi-functionality allows any of the cutting units to operate autonomously, providing redundancy and flexibility that simplifies the overall control system while maintaining high productivity through simultaneous operations.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentEP1719592B1Device and process for cutting sheets from continuous modules

Publication Date: 2008.10.22 CEM S P A LOCALITA CASALMENINI - RIVOLI VERONESE PROVINCE OF VERONA ITAL

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AI summary

The device for cutting continuous modules comprises means for feeding said continuous modules to cutting means arranged to cut said continuous modules in order to form a plurality of sheets of predetermined dimensions. The cutting means comprise two or more cutting units arranged to cut the continuous modules to simultaneously form two or more sheets of predetermined dimensions. The process for cutting continuous modules consists of feeding the continuous modules to cutting means and cutting the continuous modules to form a plurality of sheets of predetermined dimensions. Advantageously a plurality of transverse cuts are made simultaneously, to simultaneously form two or more sheets of predetermined dimensions.