Glass Plate Stacking with Cushioning and Upright Positioning

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Solution Overview

Problem

Existing technologies are inadequate for automatically stacking glass plates of different formats with high speed and minimal breakage, as they lack the necessary flexibility and protection to ensure precise and reproducible placement.

Innovation Solution

A device comprising an alignment device, a stacking device, and an upright positioner, where the glass ribbon is divided into formats, aligned, and then grasped by a robot arm for further processing, with features like vacuum suction, independent drive control, and paper insertion between glass plates to prevent clumping, enabling efficient and safe stacking.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If glass plates are stacked at high speed automatically, then productivity increases, but the risk of breakage and loss of precision increases

Engineering Contradiction:
Improvestacking speedVSAvoidbreakage safety
Core Design Contradiction:
ProductivityVSReliability

Solution Approach 1:

A cushioning element is introduced between the glass plate and the stacking device to absorb shocks and prevent direct impact. This cushioning measure is implemented beforehand in the stacking process, allowing high-speed automatic stacking while maintaining breakage safety through the protective intermediary layer.

Inventive Principle:
Principle #11Beforehand cushioning (Prior cushioning)

2Manufacturing precision

If glass plates of different formats are stacked precisely, then manufacturing precision improves, but device complexity increases

Engineering Contradiction:
Improveplacement precisionVSAvoidsystem complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The stacking device incorporates adjustable and adaptable components that can dynamically adjust to different glass plate formats. The positioning system uses movable elements and programmable control that allow precise placement for various sizes without requiring completely different device configurations, thus achieving high precision while managing complexity.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The device allows for parameter adjustments in positioning and stacking parameters to accommodate different glass plate formats. By changing operational parameters rather than physical structure for each format, the system achieves precise placement across various sizes with controlled complexity.

Inventive Principle:
Principle #35Parameter changes

3Reliability

If manual handling is used for glass plates, then breakage safety is maintained, but productivity decreases

Engineering Contradiction:
Improvebreakage safetyVSAvoidprocessing speed
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

A specially designed handling device with cushioning elements and appropriate gripping mechanisms serves as an intermediary between the automatic stacking system and the glass plates. This intermediary component provides gentle, controlled handling that maintains breakage safety while enabling automated high-speed processing, eliminating the need for manual handling.

Inventive Principle:
Principle #24Intermediary (Mediator)

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

The system achieves a processing speed of approximately 100 meters per minute with high breakage safety, allowing for precise and flexible stacking of glass plates of varying formats, addressing the limitations of prior art by ensuring accurate alignment and handling.

Implementation Method 1

the respective plate is lifted slightly from the plate conveyor by generating a suction pressure on the upper side of the plate

Methodology Applied
Scientific EffectSuction pressure: Suction

Implementation Method 2

it is also gripped on the upper side of the plate by friction

Methodology Applied
Scientific EffectFriction: Friction

Data Source

PatentEP2121493B1Device and process for automatically sorting glass plates
Publication Date: 2012.10.31 GRENZEBACH MASCHINENBAU GMBH
  • EP2121493B1 patent drawingFigure 1
  • EP2121493B1 patent drawingFigure 2
  • EP2121493B1 patent drawingFigure 3

AI summary

The invention relates to a device and a method for sorting and stacking glass plates of different thicknesses and/or different formats over a divided transport line, characterised by the following: 1) an aligning device (1) which aligns the glass plates against a left and/or a right abutment strip (7) by means of controllable rolls (8); 2) a stacking device (2) which lowers the plates supplied by the aligning device (1) and stacks them one above the other; 3) a connectable paper insertion device (15) which lays paper from a store onto a plate; 4) an upright positioner (3) which rotates the stacked plates by a right angle and aligns them on a vertical aligning device (29); 5) and a robot gripping arm which grips the glass plates aligned on the upright positioner (3) and transports them away for further use.