Integrated Welding Device for Automobile Parts

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Solution Overview

Problem

The existing welding systems for automobile parts require multiple processes and significant installation space due to the separation of articulated robots, jigs, and welding devices, leading to inefficiencies in operation time and continuity.

Innovation Solution

A welding device that integrates an aligner, a mover, and a welding machine to perform gripping, aligning, and welding of multiple parts with a single continuous operation, utilizing an aligner with a gripping member and an aligning member to position parts, and a welding machine that generates heat by concentrating electrical current on the interface between parts and the vehicle body.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If articulated robot, jig, and welding device are separated into multiple processes, then each component can be optimized independently, but operation time increases and continuity is reduced

Engineering Contradiction:
ImproveIndependent optimization of componentsVSAvoidOperation time and continuity
Core Design Contradiction:
Ease of manufactureVSProductivity

Solution Approach 1:

The patent combines the articulated robot, jig, and welding device into an integrated system where the robot arm performs both gripping/aligning operations and welding operations. The welding device is mounted on the robot arm, allowing seamless transition between positioning and welding without removing or repositioning components, thereby reducing operation time and maintaining continuity while preserving the functional optimization of each component.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The articulated robot is designed to perform multiple functions: it serves as both the gripping/aligning mechanism and the welding positioning system. The robot arm can switch between holding the part with the gripper and positioning the welding torch, eliminating the need for separate dedicated devices and improving operational efficiency.

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

2Ease of manufacture

If multiple separate devices are used for gripping, aligning, and welding, then each function can be performed by specialized equipment, but installation space increases

Engineering Contradiction:
ImproveSpecialized equipment for each functionVSAvoidInstallation space
Core Design Contradiction:
Ease of manufactureVSArea of stationary object

Solution Approach 1:

The patent merges multiple specialized devices into a single integrated robotic system. The articulated robot arm combines the gripping mechanism, aligning capability, and welding positioning function in one compact unit, significantly reducing the installation space required compared to having separate articulated robots, jigs, and welding devices positioned throughout the workspace.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The robot system is designed with multi-functionality to perform gripping, aligning, and welding operations using the same physical platform. The gripper and welding torch are both mounted on the robot arm, allowing the system to execute multiple operations within a confined space without requiring additional dedicated equipment.

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

3Ease of manufacture

If multiple processes are required to weld parts to vehicle body, then each process can be optimized separately, but the number of operations increases and time consumption increases

Engineering Contradiction:
ImproveSeparate process optimizationVSAvoidTotal operation time
Core Design Contradiction:
Ease of manufactureVSLoss of time

Solution Approach 1:

The integrated robotic system enables continuous operation by eliminating idle transitions between separate processes. The robot arm maintains continuous motion from gripping and aligning the part to positioning and executing the welding operation without interruption or repositioning of equipment, thereby reducing total operation time while allowing each functional component to be optimized for its specific task.

Inventive Principle:
Principle #20Continuity of useful action

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 integrated system reduces operation time, enhances continuity, and minimizes installation space by allowing simultaneous gripping, aligning, and welding of parts, improving manufacturing efficiency and convenience.

Implementation Method 1

a welding machine configured to weld the adhering portion between the parts and the vehicle body

Methodology Applied
Scientific EffectJoule heating: Joule Heating

Implementation Method 2

a welding machine configured to weld the adhering portion between the parts and the vehicle body

Methodology Applied
Scientific EffectElectrical resistance heating: Joule Heating

Data Source

PatentUS9937591B2Welding device and method of welding automobile parts
Publication Date: 2018.04.10 HYUNDAI MOTOR CO LTD
  • US9937591B2 patent drawing
  • US9937591B2 patent drawing
  • US9937591B2 patent drawing

AI summary

A welding device provided for welding automobile parts received in a pallet to a vehicle body includes: an aligner configured to grip and align the parts received in the pallet; a mover configured to move the aligner to take out the parts and let the taken out parts adhere to an installation position of the vehicle body; and a welding machine configured to weld the adhering portion between the parts and the vehicle body.