Book Cover Positioning Strips for Adhesive Bonding

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Solution Overview

Problem

Existing book binding methods face challenges in ensuring reliable and high-quality adhesive bonding of book covers to book blocks, particularly due to uncontrolled lifting of book covers during the process, which affects production reliability and quality.

Innovation Solution

A device with pivoting positioning strips and a pneumatic drive system that synchronizes the movement of the book cover with the book block, ensuring controlled positioning and pressure adjustment to prevent lifting, allowing for precise adhesive bonding.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Speed

If the rubbing device is accelerated to the speed of the book block before the book cover is taken over, then the synchronization of speeds is achieved, but the book cover is lifted in an uncontrolled manner and displaced

Engineering Contradiction:
Improvesynchronization of rubbing device and book block speedVSAvoidpositioning accuracy of book cover
Core Design Contradiction:
SpeedVSReliability

Solution Approach 1:

The positioning strips perform a preliminary action by engaging the book cover spine before the rubbing operation. The strips are pivotably connected to the rubbing device and extend into the conveying plane to laterally position the book cover on the book block spine, preventing uncontrolled lifting and displacement during the speed synchronization process

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The positioning strips act as an intermediary element between the rubbing device and the book cover. These strips provide a mechanical interface that constrains the book cover position while allowing the rubbing device to accelerate to matching speeds, thereby mediating the interaction between moving components and preventing harmful displacement

Inventive Principle:
Principle #24Intermediary (Mediator)

2Manufacturing precision

If a positioning device with pivotable positioning strips is used to center the book block, then the manufacturing precision is improved, but the mechanical and control engineering effort increases

Engineering Contradiction:
Improvecentering accuracy of book blockVSAvoidmechanical and control engineering effort
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The positioning strips are designed to automatically perform the centering function through their pivotable connection to the rubbing device. As the rubbing device moves into position, the strips naturally pivot to engage the book cover spine and establish correct lateral positioning, eliminating the need for separate control systems or complex mechanical actuation mechanisms

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The positioning strips utilize pivotable connections that allow dynamic adaptation to different book cover positions. The strips can pivot to accommodate variations in book block placement while maintaining centering accuracy, providing a simple yet effective mechanism that responds automatically to positioning requirements without complex control

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 solution simplifies the book binding process, enhances production reliability, and improves quality by maintaining consistent contact between the book cover and block, reducing mechanical and control engineering efforts.

Implementation Method 1

the book cover is united with the outsides of the book block by rubbing

Methodology Applied
Scientific EffectFriction: Friction

Data Source

PatentEP2287010B1Method and device for connection of a book cover to glued exterior surfaces of a book block
Publication Date: 2013.07.31 MULLER MARTINI HLDG
  • EP2287010B1 patent drawingFigure 1a~1c
  • EP2287010B1 patent drawingFigure 2~2a
  • EP2287010B1 patent drawingFigure 3

AI summary

In a process for adhesively joining a book cover (2) to glued outer surfaces (3, 4) of a book block (9) to be suspended into a book cover (2) having a binding (8) attached to the inner side (6) of a book cover spine (7) to form a book (46), in which the book blocks (9) transported astride a conveying section (12) are each glued on their outer sides (3, 4) against a conveying plane (18) lying perpendicular to the conveying section (12), with the book cover spine (7) distributed approximately evenly on a conveying plane (18) formed by the book block (9) transported on the conveying section (12), at least approximately to the inner side (6) and on the further common conveying path the book cover (2) is joined by rubbing with the outer sides (3, 4) of the book block (9), the book cover (2) is before being rubbed against the outer sides (3, 4) of a book block. (9) raised at least in a central area having the spine (7) of the book cover.