Dual Transport Carriage Coating System for Heavy Vehicle Bodies
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Solution Overview
Problem
Existing installations for treating large articles, such as vehicle bodies, face challenges in accommodating their weight and torque during coating processes, particularly for heavy goods vehicles, requiring expensive measures to achieve flexible kinematics.
Innovation Solution
The implementation of pairs of transport carriages with swivel arms and running gears, each with six degrees of freedom, allows independent control of translational and rotational movements, with at least three degrees of freedom actively driven, enabling flexible and efficient movement of large articles through treatment zones.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single transport carriage is used to convey large articles, then the installation structure is simple, but the system cannot accommodate the weight and torque requirements for large vehicle bodies
Solution Approach 1:
The single transport carriage is divided into two separate transport carriages (first and second) that operate independently. Each carriage has its own running gear and swivel arm mechanism, allowing the system to handle the weight and torque requirements of large vehicle bodies while maintaining structural simplicity through modular design
2Adaptability or versatility
If a single transport carriage with double-articulated connection is used, then the kinematic range is maximized, but the system lacks sufficient control for precise movement of large articles
Solution Approach 1:
The double-articulated connection is segmented into two independent transport carriages, each with its own swivel arm and pivot pins. This segmentation allows independent control of each carriage's six degrees of freedom, providing precise movement control while maintaining extensive kinematic range through the coordinated operation of both carriages
Solution Approach 2:
Each transport carriage is equipped with specific local components (running gear, swivel arm, pivot pins) that provide specialized functionality. The first and second carriages have locally optimized structures that enable precise control of their respective degrees of freedom, improving overall movement control precision
3Weight of moving object
If expensive measures are implemented to accommodate weight and torque, then the system can handle large vehicle bodies, but the installation cost increases significantly
Solution Approach 1:
The system uses two standard transport carriage units rather than one complex heavy-duty carriage. This segmentation allows the use of more economical, off-the-shelf components for each carriage, reducing overall installation cost while still achieving the necessary weight and torque capacity through the combined capability of both carriages
Solution Approach 2:
The transport carriages are designed with universal components (running gear, swivel arms, pivot pins) that can be standardized and reused. This multi-functionality approach allows the same carriage design to handle various article sizes and weights, reducing the need for expensive custom-built solutions for each application
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 configuration enables flexible and efficient movement of large articles, overcoming weight and torque challenges, and allows for effective electrophoretic dip coating of both inner and outer surfaces, improving coating processes for large vehicle bodies.
Implementation Method 1
allows for effective electrophoretic dip coating of both inner and outer surfaces
Data Source
AI summary
An installation for treating articles, especially vehicle bodies, comprises at least one treatment zone, in particular a bath containing a treatment liquid, into which the articles are introduced. The articles are conveyed through the installation in a continuous or intermittent translational movement. To this end, the installation comprises at least two transport carriages combined to form a pair, which in turn each comprise a running gear and at least one swivel arm, which is connected to the respective running gear so as to be swivellable about a first pivot pin and with which a supporting structure for the article to be treated is connected so as to be swivellable about a second pivot pin. The unit includes the two transport carriages effecting a correlated movement actually has six degrees of freedom of motion, wherein drives are provided for at least three of these degrees of freedom of motion.