Separating Tool Actuation for Adhesive Composite Grid Removal

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Solution Overview

Problem

Existing methods fail to reliably separate stamped grids from laminate portions remaining on a carrier film, particularly in adhesive-containing composite materials, during the production of contour geometries.

Innovation Solution

An apparatus with a separating tool and counterpressure plate, controlled by actuators using ramp and jump functions, allows for precise movement and excitation relative to each other, enabling the separation of adhesive-containing layers while maintaining the carrier film intact.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a separating tool is used to part the adhesive-containing layer, then the cover layer and adhesive layer are parted, but the stamped grid remains attached to the carrier film and cannot be reliably separated

Engineering Contradiction:

Improveseparation reliabilityVSAvoidadhesive residue on carrier film

Core Design Contradiction:

ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The patent applies mechanical vibration through actuators that generate ramp and jump functions, causing the separating tool and counterpressure plate to vibrate relative to each other during the separation process. This vibration disrupts the adhesive bonds between the stamped grid and carrier film, enabling complete separation that would not occur with static separation alone.

Inventive Principle:

Principle #18Mechanical vibration

Solution Approach 2:

The patent transitions from static separation to dynamic separation by introducing controlled movement in multiple directions. The separating tool and counterpressure plate are excited to move relative to each other in parallel to the cutting edge plane, creating dynamic separation conditions that effectively break adhesive bonds and prevent residue.

Inventive Principle:

Principle #15Dynamics

2Ease of manufacture

If the separating tool is moved in translational tool stroke directions only, then the cutting action is simple, but the adhesive layer cannot be completely separated from the carrier film

Engineering Contradiction:

Improveseparation process simplicityVSAvoidseparation completeness

Core Design Contradiction:

Ease of manufactureVSManufacturing precision

Solution Approach 1:

The patent adds another dimension of movement by exciting the separating tool and counterpressure plate to move relative to each other in directions parallel to the cutting edge plane, in addition to the primary translational tool stroke directions. This multi-directional movement ensures complete separation of the adhesive layer while maintaining process simplicity.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

3Reliability

If actuators with ramp and jump functions are used to excite the separating tool and counterpressure plate, then complete separation of the adhesive layer is achieved, but the device complexity increases

Engineering Contradiction:

Improveseparation completenessVSAvoidactuator control system complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent utilizes parameter changes in the actuator control, specifically employing ramp and jump functions to generate the necessary vibrations and movements. By controlling the temporal parameters of the actuator output, the system achieves complete separation without requiring additional hardware complexity.

Inventive Principle:

Principle #35Parameter changes

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

Effectively peels off the stamped grid from the laminate portions, ensuring complete separation of the adhesive layer without damaging the carrier film, facilitating efficient production of contour geometries in adhesive-containing composite materials.

Implementation Method 1

The separating tool and the counterpressure plate are adapted to be controlled relative to each other in at least one excitation direction by means of each actuator using a ramp function

Methodology Applied

Scientific EffectRamp function:

Implementation Method 2

the two components can be displaced with respect to each other by means of a ramp function and/or excited to vibrate by means of a jump function, e.g. by a ram pulse

Methodology Applied

Scientific EffectJump function:

Data Source

PatentUS11465311B2Separating apparatus and separating method for adhesive-containing composite material

Publication Date: 2022.10.11 LTS LOHMANN THERAPIE SYST AG

AI summary

The invention relates to an apparatus comprising a separating tool and comprising a counterpressure plate for producing contour geometries in adhesive-containing composite materials, wherein the separating tool can be moved in translational tool stroke directions between an inoperative position and a parting position normal to the counterpressure plate, and also to a method for producing contour geometries in adhesive-containing composite materials by means of an apparatus of this kind. The separating tool and the counterpressure plate can be actuated relative to one another by means of at least one actuator in at least one excitation direction with a ramp function and/or with a jump function. Each of these excitation directions lies in a parallel plane to a cutting edge plane of the separating tool. The present invention permits reliable separation of a stamped grid from laminate sections which remain on a carrier film.