Laminator Support Surfaces for Sheet Material Positioning

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Solution Overview

Problem

Existing laminating devices face difficulties in precisely positioning sheet material within plastic film, especially with larger formats, leading to inconsistent lamination results due to slipping and misalignment.

Innovation Solution

The laminating device features separate support surfaces for the lower half of the film and sheet material, with side stop surfaces to guide and secure the materials during insertion, and optionally includes rotatable rollers on the film support surface to reduce friction, allowing for precise alignment and secure positioning.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If a single support surface is used for both film and sheet material, then the device structure is simple, but positioning precision deteriorates due to material slipping and misalignment

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

Solution Approach 1:

The support surface is divided into two separate, identical surfaces: one for the plastic film and one for the sheet material. Each surface is equipped with its own pair of side stop surfaces, allowing independent positioning and preventing material slipping during the lamination process.

Inventive Principle:
Principle #1Segmentation

2Stability of the object's composition

If support surfaces are extended laterally to prevent slipping, then positioning stability improves, but the device width increases

Engineering Contradiction:
Improvepositioning stabilityVSAvoiddevice width
Core Design Contradiction:
Stability of the object's compositionVSArea of stationary object

Solution Approach 1:

Instead of extending the support surfaces laterally in the horizontal plane, the patent uses side stop surfaces that extend in the vertical dimension. These stops protrude upward from the support surfaces to physically block lateral movement of materials without increasing the device's footprint width.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

3Manufacturing precision

If side stop surfaces are made tall to prevent slipping, then positioning precision improves, but ease of operation deteriorates due to difficulty in placing materials

Engineering Contradiction:
Improvepositioning precisionVSAvoidease of material placement
Core Design Contradiction:
Manufacturing precisionVSEase of operation

Solution Approach 1:

The side stop surfaces have varying heights at different locations. They are taller at the rear (away from insertion slot) to prevent slipping during lamination, but shorter or absent at the front (near insertion slot) to allow easy placement of materials. This gradient in stop height optimizes both positioning precision and ease of operation.

Inventive Principle:
Principle #3Local quality

4Manufacturing precision

If the front flap is made rigid to maintain alignment, then positioning precision improves, but adaptability deteriorates when changing film sizes

Engineering Contradiction:
Improvealignment precisionVSAvoidadaptability to different film sizes
Core Design Contradiction:
Manufacturing precisionVSAdaptability or versatility

Solution Approach 1:

The front flap is made pivotable about a horizontal axis, allowing it to be rotated between a closed position (for lamination) and an open position (for accessing the film support surface). Additionally, the film support surface itself can be adjusted or replaced depending on the film size being used, combining structural rigidity with operational flexibility.

Inventive Principle:
Principle #15Dynamics

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

This configuration ensures accurate and consistent lamination by preventing slipping and facilitating easier handling of larger formats, resulting in improved lamination quality and reduced operational complexity.

Implementation Method 1

The support surfaces have rollers arranged on them, which protrude slightly from the support surfaces and can be rotated about rotation axes running transversely to the conveying direction

Methodology Applied
Scientific EffectFriction: Friction

Data Source

PatentEP3235639B1Laminator
Publication Date: 2019.04.17 LEITZ ACCO BRANDS GMBH & CO KG
  • EP3235639B1 patent drawingFigure 1
  • EP3235639B1 patent drawingFigure 2

AI summary

The invention relates to a laminating device (10) with a housing (12), with a laminating device received in the housing (12) for laminating material to be laminated from sheet material and plastic film to form a laminate, and with a flow channel for feeding the material to be laminated to the laminating device and for transporting the laminate away from the laminating device, wherein the flow channel begins at an insertion slot (14) in the housing (12) and ends at an ejection slot in the housing (12). According to the invention, the housing (12) has at least two support surfaces (22, 32, 38, 48) for the material to be laminated on the side of the insertion slot (14), the support surfaces being located in the extension of the flow channel, wherein at least one support surface (38, 48) for the support of sheet material is formed by the surfaces of two support elements (34) arranged at a distance from each other and removable on or above at least one film support surface (22, 32) for the support of plastic film.