Modular Numbering Machine Drive Module for Easy Maintenance

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Solution Overview

Problem

Existing numbering machines are difficult to maintain and repair, especially when faults occur in the drive unit, requiring precise repositioning of components which is challenging for non-experts and can lead to downtime in printing processes.

Innovation Solution

A modular design for the numbering machine where the numbering unit and drive module can be removed as a complete assembly, with fixed relative positioning, allowing for easy maintenance and fault rectification, and featuring a carrier with recesses for motors and control electronics to simplify cable routing and reduce installation space requirements.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Volume of moving object

If the numbering machine is designed as a compact unit with integrated drive units, then the installation space is reduced, but the ease of maintenance and repair deteriorates

Engineering Contradiction:
Improveinstallation spaceVSAvoidease of maintenance
Core Design Contradiction:
Volume of moving objectVSEase of repair

Solution Approach 1:

The numbering machine is divided into modular components: a numbering unit with digit wheels and a drive module with multiple drive units. Each drive unit can be independently removed from the carrier, allowing maintenance personnel to access and replace individual motors and cabling without disassembling the entire compact structure. This segmentation enables easy repair while maintaining the compact overall design.

Inventive Principle:
Principle #1Segmentation

2Manufacturing precision

If the numbering machine requires precise repositioning of components during assembly, then the manufacturing precision is improved, but the ease of operation deteriorates

Engineering Contradiction:
Improvepositioning precisionVSAvoidease of assembly
Core Design Contradiction:
Manufacturing precisionVSEase of operation

Solution Approach 1:

The drive units are pre-assembled on a carrier with fixed relative positioning. The carrier includes pre-positioned mounting locations and alignment features that ensure correct positioning when the numbering unit and drive module are assembled. This preliminary arrangement of components eliminates the need for complex precision alignment during final assembly, making the process accessible to less experienced workers.

Inventive Principle:
Principle #10Preliminary action

3Device complexity

If the drive units are integrated into a single assembly, then the device complexity is reduced, but the ease of repair deteriorates

Engineering Contradiction:
Improvestructural complexityVSAvoidfault rectification
Core Design Contradiction:
Device complexityVSEase of repair

Solution Approach 1:

While the drive units are integrated on a common carrier for structural simplicity, each drive unit is designed as an independent removable module. The carrier includes individual mounting features that allow each drive unit to be separately accessed and replaced. This segmentation at the module level enables easy repair of individual faults while maintaining overall structural integration.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Each drive unit can be extracted from the carrier independently. When a fault occurs in a specific drive unit, that unit can be removed and replaced without affecting other drive units or requiring disassembly of the entire drive module. This extraction capability simplifies repair operations while maintaining the integrated design.

Inventive Principle:
Principle #2Taking out (Extraction)

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

This design simplifies maintenance, allows quick adjustment of printing character combinations, and enables less experienced workers to assemble and maintain the machine with precision, reducing downtime and increasing operational reliability.

Implementation Method 1

a drive pinion arranged on the drive shaft for driving the gear wheel

Methodology Applied
Scientific EffectGear: Gear

Data Source

PatentEP2657022B1Numbering machine
Publication Date: 2014.10.01 PAUL LEIBINGER GMBH & CO KG NUMMERIER UND MARKIERUNGSSYSTEME
  • EP2657022B1 patent drawingFigure 1
  • EP2657022B1 patent drawingFigure 2
  • EP2657022B1 patent drawingFigure 3

AI summary

The machine (100) has housing (180) inside which number wheel (110) is located. The number wheel has wheel axle on which adjustable digit wheels are rotatably arranged. The digit wheels are associated with gear to be driven, and drive module (140) has drive units that are connected to drive shaft (143c). The drive shaft is connected to drive pinion (143d) for driving the gear. A motor (143a) is connected to drive shaft for rotating drive shaft so that number wheel is set in rotation. Fixing units are provided for connecting drive module removably with number wheel.