Wrapping Robot Handle Asymmetry and Mast Inclination

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Solution Overview

Problem

Existing wrapping machines are limited in size, require additional preparation to handle large or irregularly shaped products, and often result in uneven wrapping due to non-uniform tension, with issues of wraps being loosened or cut during the process, and lack mobility to wrap products at specific locations.

Innovation Solution

A wrapping robot with a handle biased towards the product to prevent accidents, an inclined mast to manage tension, and a wrap conveying-tension sensing unit that stops operation when the wrap is loosened or cut, ensuring safety and reliability by guiding the robot around the product and maintaining tension.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If the handle is disposed at the center of the robot body, then the robot structure is simple and symmetric, but safety accidents occur when workers or products hit the protruding handle during wrapping operations

Engineering Contradiction:
Improvesafety accidents from handle protrusionVSAvoidhandle positioning complexity
Core Design Contradiction:
Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The handle is positioned asymmetrically on the robot body, specifically on the inner side relative to the wrapping direction, rather than at the center. This asymmetric positioning ensures the handle does not protrude outward during wrapping operations, eliminating safety hazards while maintaining structural simplicity

Inventive Principle:
Principle #4Asymmetry

2Object-affected harmful factors

If the mast is disposed vertically, then the robot structure is simple, but the wrap tension pulls the robot causing it to turn over or separate from the wrapping route

Engineering Contradiction:
Improverobot instability due to wrap tensionVSAvoidmast positioning complexity
Core Design Contradiction:
Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The mast is positioned at an angle opposite to the direction of wrap tension pull. This preliminary anti-action positioning creates a counterbalancing effect that prevents the robot from turning over or separating from the wrapping route when wrap tension is applied

Inventive Principle:
Principle #9Preliminary anti-action

3Adaptability or versatility

If the wrapping machine is fixed at a specific place, then the machine structure is simple, but it cannot wrap products at their specific locations and requires additional preparation work

Engineering Contradiction:
Improvemobility to wrap products at specific locationsVSAvoidrobot system complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The wrapping system is transformed from a fixed structure to a mobile robot platform. The robot body with wheels enables dynamic movement to various product locations, eliminating the need for product relocation and additional preparation work while maintaining wrapping functionality

Inventive Principle:
Principle #15Dynamics

4Object-affected harmful factors

If the robot revolves around the product with a centrally positioned handle, then the wrapping path is straightforward, but the handle protrudes outward creating safety hazards during revolution

Engineering Contradiction:
Improvesafety hazards from protruding handle during revolutionVSAvoidwrapping operation smoothness
Core Design Contradiction:
Object-affected harmful factorsVSEase of operation

Solution Approach 1:

The handle is positioned asymmetrically on the inner side of the robot body relative to the wrapping direction. During revolution around the product, this positioning ensures the handle remains retracted and does not protrude outward, eliminating safety hazards while allowing smooth wrapping operations

Inventive Principle:
Principle #4Asymmetry

Data Source

PatentUS11661226B2Wrapping robot with enhanced safety and reliability
Publication Date: 2023.05.30 YOON MYOUNG KOO
  • US11661226B2 patent drawing
  • US11661226B2 patent drawing
  • US11661226B2 patent drawing

AI summary

The present invention provides a wrapping robot with enhanced safety and reliability, the wrapping robot being able to prevent a safety accident that occurs when a worker or another object hits against a handle protruding outward from a robot body while the robot revolving around a product to perform wrapping by biasing the handle toward the product to be wrapped; and being able to improve reliability of wrapping by stopping operation of the wrapping robot when a wrap is loosened or cut during wrapping, using a sensor that senses loosening or cutting of a wrap.