Suction Table Separation of Electronic Components from Adhesive Sheets

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Solution Overview

Problem

Existing systems for picking up electronic components from pressure sensitive adhesive sheets often apply shocks to the components, leading to damage during the separation process.

Innovation Solution

A separation device with a mount table, a projecting portion, and a drawing port that applies negative pressure to separate the adhesive sheet from the electronic component without causing damage, utilizing a holding device to move the sheet and a suction device to safely remove the component.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a push-up pin is used to push up the electronic component via the pressure sensitive adhesive sheet, then the electronic component can be separated from the adhesive sheet, but a shock is applied to the electronic component causing damage

Engineering Contradiction:

Improveintegrity of electronic componentVSAvoidshock to electronic component

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The invention uses a suction table with a suction hole to apply negative pressure (suction force) to the pressure sensitive adhesive sheet, replacing the mechanical push-up pin method. This pneumatic approach allows the adhesive sheet to be gradually pulled away from the electronic component without applying shock or impact forces, thus separating the component intact while maintaining its reliability.

Inventive Principle:

Principle #29Pneumatics and hydraulics

Solution Approach 2:

The invention replaces the mechanical push-up pin system with a suction-based system. Instead of using a physical pin that contacts and pushes the component through the adhesive sheet, the system uses atmospheric pressure differential created by the suction hole to pull the adhesive sheet away, substituting direct mechanical contact with a field-based (pressure) approach that eliminates shock.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Device complexity

If a push-up pin method is used for separation, then the separation process is simple, but the electronic component may be damaged due to applied shock

Engineering Contradiction:

Improvesimplicity of separation mechanismVSAvoiddamage-free separation

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The suction table with suction hole provides a relatively simple device structure that uses negative pressure to achieve damage-free separation. The suction mechanism creates a pressure differential that gradually pulls the adhesive sheet away from the electronic component, ensuring reliable separation without shock while maintaining device simplicity.

Inventive Principle:

Principle #29Pneumatics and hydraulics

3Object-affected harmful factors

If negative pressure is applied through a drawing port near a projecting portion, then the pressure sensitive adhesive sheet is drawn without shocking the electronic component, but the device structure becomes more complex

Engineering Contradiction:

Improveshock eliminationVSAvoidstructure with projecting portion and drawing port

Core Design Contradiction:

Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The projecting portion acts as an intermediary structure that positions the suction hole optimally. It creates a localized area where the adhesive sheet can be drawn without directly exposing the electronic component to the suction force, mediating between the suction mechanism and the component to eliminate shock while managing the structural complexity.

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 solution effectively separates electronic components from pressure sensitive adhesive sheets without applying shock, ensuring the components are not damaged during the process.

Implementation Method 1

when a negative pressure is applied, draws the pressure sensitive adhesive sheet

Methodology Applied

Scientific EffectNegative pressure: Pressure Drop

Data Source

PatentUS9520316B2Separation device and pickup system

Publication Date: 2016.12.13 TESEC

AI summary

A separation device includes a mount table, projecting portion, and drawing port. The mount table includes a mount surface on which a pressure sensitive adhesive sheet, on which an electronic component is stuck, is mounted. The electronic component is stuck on one surface of the pressure sensitive adhesive sheet, and the mount surface is in contact with the other surface of the pressure sensitive adhesive sheet. The projecting portion is formed on the mount surface and projects toward the pressure sensitive adhesive sheet mounted on the mount surface. The drawing port is open near the projecting portion on the mount surface, and when a negative pressure is applied, draws the pressure sensitive adhesive sheet.