Gripping Tool for SMD Reels with Central Support

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Solution Overview

Problem

Existing gripping technologies for coil-like and disc-like objects, such as SMD rolls, are inefficient for automatic handling and processing, particularly in loading and unloading processes, as they lack the ability for central gripping, rotatable storage, and precise control.

Innovation Solution

A gripping tool with a controllable actuating device and support arms that can centrally grip and support objects, allowing for rotatable storage, and is integrated with a programmable handling device, such as an industrial robot, for automated operation and precise positioning.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If manual gripping and handling of SMD rolls is used, then operation simplicity is maintained, but productivity and automation capability deteriorate

Engineering Contradiction:
Improvehandling efficiencyVSAvoidgripping device complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The gripping device is divided into multiple support arms (at least two) that can independently position and grip different portions of the reel. Each support arm can be independently controlled, allowing the system to handle reels of various sizes and weights, thereby improving productivity while managing complexity through modular design

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The gripping device is designed with universal support arms that can accommodate different reel diameters and types (SMD reels, carrier tapes). The support arms can be adjusted to provide both lateral support and central gripping functions, making the device versatile for various handling tasks in electronics manufacturing

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

2Adaptability or versatility

If conventional gripping methods are used, then device simplicity is maintained, but the ability to enable rotation and central support deteriorates

Engineering Contradiction:
Improverotation capabilityVSAvoidgripping mechanism complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The support arms are designed with adjustable and movable characteristics, allowing them to adapt to different reel configurations. The arms can be positioned to enable free rotation of the reel when needed, or provide fixed support when rotation is not required, providing dynamic adaptability without requiring a completely different mechanism for each function

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The support arms act as intermediaries between the gripping device and the reel. They provide a flexible interface that can transmit rotational motion when needed or provide stable support when needed, mediating between the fixed mounting structure and the rotating reel to enable rotation capability without complex direct drive mechanisms

Inventive Principle:
Principle #24Intermediary (Mediator)

3Productivity

If manual loading and unloading of reels is performed, then equipment simplicity is maintained, but loss of time and productivity deteriorate

Engineering Contradiction:
Improveloading speedVSAvoidautomation level
Core Design Contradiction:
ProductivityVSExtent of automation

Solution Approach 1:

The gripping device is designed to automatically grip, position, and release reels without requiring manual intervention for each operation. The support arms can automatically adjust their position and the gripping force, enabling the system to perform loading and unloading operations autonomously, thereby increasing productivity while maintaining reasonable automation complexity

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The support arms are pre-positioned and pre-configured to match common reel sizes and handling requirements. This preliminary setup allows for rapid automatic operation during actual loading and unloading tasks, reducing the time required for each operation while avoiding the need for complex real-time adjustment mechanisms

Inventive Principle:
Principle #10Preliminary action

4Manufacturing precision

If non-central gripping is used, then gripping simplicity is maintained, but stability and precision of object handling deteriorate

Engineering Contradiction:
Improvepositioning accuracyVSAvoidgripping structure complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The gripping function is segmented across multiple support arms that can independently position themselves to grip the reel at optimal locations. This segmentation allows for precise central gripping by coordinating the positions of multiple arms, achieving high positioning accuracy while managing structural complexity through distributed actuation

Inventive Principle:
Principle #1Segmentation

Data Source

PatentEP3475037B1Gripping tool, gripping device, and gripping method
Publication Date: 2020.04.15 KUKA SYSTEMS GMBH
  • EP3475037B1 patent drawingFigure 1
  • EP3475037B1 patent drawingFigure 2
  • EP3475037B1 patent drawingFigure 3

AI summary

The invention relates to a gripping tool (2), to a gripping device (1), and to a gripping method for coil-type and/or disk-type gripping objects (4), in particular SMD rolls. The gripping tool (2), which can be automatically handled and operated, has a frame (8) having a connection (9), in particular a robot connection, and has a gripper (10) having a controllable control device (16), wherein the gripper (10) is provided and designed for laterally guiding and for centrally gripping and supporting the gripping object (4).