Automated Cable Harness Production System

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Solution Overview

Problem

The production of cable harnesses with branched structures in the motor vehicle industry is inefficient due to the high variety of types and variants, requiring significant manual labor and lengthy production times, despite existing semi-automated and automated methods.

Innovation Solution

A modular, fully automated system comprising two parts: the first part prepares individual line elements by cutting, stripping, and contacting, while the second part assembles the branched cable set using a manipulator and transport system to distribute and fix the elements in a predetermined structure, enabling fully automated production without manual intervention.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If manual assembly methods are used for cable harnesses with high variety of types and variants, then flexibility in handling diverse cable configurations is improved, but production time and labor intensity increase significantly

Engineering Contradiction:
Improvehandling diverse cable configurationsVSAvoidproduction time
Core Design Contradiction:
Adaptability or versatilityVSProductivity

Solution Approach 1:

The cable harness production system is divided into multiple independent processing stations (cutting, stripping, contacting, assembling, testing) that can process different cable elements in parallel. Each station handles specific tasks, allowing the system to manage diverse cable configurations efficiently while maintaining high throughput and reducing overall production time.

Inventive Principle:
Principle #1Segmentation

2Extent of automation

If semi-automated processes are used for cable harness production, then some automation benefits are achieved, but significant manual intervention is still required

Engineering Contradiction:
Improveautomation levelVSAvoidsystem complexity
Core Design Contradiction:
Extent of automationVSDevice complexity

Solution Approach 1:

The processing stations are designed with universal, interchangeable modules that can handle multiple cable types and configurations through programmable control. The same basic station structure can be reconfigured via software to accommodate different cable harness variants, achieving full automation without requiring complex manual reconfiguration for each product type.

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Quantity of substance

If customized cable sets are produced after customer order receipt, then inventory costs are reduced, but delivery time requirements become more difficult to meet

Engineering Contradiction:
Improveinventory levelsVSAvoiddelivery time
Core Design Contradiction:
Quantity of substanceVSSpeed

Solution Approach 1:

The system performs preliminary preparation of cable elements (cutting, stripping, contacting) and stores them in buffer stations ready for assembly. When an order is received, the pre-prepared elements can be quickly assembled into the final cable harness configuration, enabling rapid customization and delivery without maintaining finished goods inventory.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentEP3593420B1System and method for the automated production of a cable set
Publication Date: 2021.12.15 LEONI BORDNETZ-SYSTEME GMBH & CO KG
  • EP3593420B1 patent drawingFigure 1
  • EP3593420B1 patent drawingFigure 2
  • EP3593420B1 patent drawingFigure 3

AI summary

The system (2) functions for the automated production of a cable set (3), which has a branched structure formed by multiple individual line elements (22). The system (2) has two parts (4, 6), wherein, in a modular set-up, multiple first processing stations (A to D) are arranged in the first part (4) and multiple second processing stations (E to K) are arranged in the second part (6). In the first part (4), an automatic preparation of the individual line elements (22) occurs, which are then collected in a buffer station (D) at the end of the first part (4). In the second part (6), the prepared individual line elements (22) are combined to form the cable set (3). For this, the line elements (22) are introduced into connector housings (76) in a connector station (E), and transferred to second transporters (48), and the branched structure of the cable set (3) is then formed by means of these second transporters (48) by moving along second tracks (50). In this spread branched structure, inter alia, a fixing of the line elements (22) to one another occurs in a fixing station (G).