Book Block Glue Application Control Mark Detection

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Solution Overview

Problem

Existing devices for producing book blocks from imbricated streams of printed products face challenges such as high reject rates due to incorrect separation and glue application, especially at high processing speeds, and are costly when dealing with various variants or small print runs, requiring complex and time-consuming adjustments.

Innovation Solution

A device with a detection system that uses control markings on the printed products to synchronize the separation and glue application, allowing for automated, error-free processing of book blocks with different page numbers and editions, reducing reject rates and production costs by precisely applying glue in the correct positions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If mechanical synchronization is used to coordinate transport means, separating means device and collecting device, then processing speed can be maintained, but collecting errors occur and reject rate increases

Engineering Contradiction:

Improveprocessing speedVSAvoidcollecting accuracy

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The patent replaces mechanical synchronization with an optical detection system. A detection device identifies control markings on printed products to trigger separation and glue application, substituting mechanical coordination with optical sensing and electronic control signals, thereby eliminating friction-based synchronization errors while maintaining high processing speeds

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The detection device provides real-time feedback by detecting control markings on printed products. This feedback mechanism triggers the separating means device and glue head at precise moments, creating a closed-loop control system that ensures accurate book block formation without mechanical synchronization errors

Inventive Principle:

Principle #23Feedback

2Device complexity

If glue application is performed without precise detection, then processing remains simple, but glue is incorrectly positioned causing interruptions and high scrap rates

Engineering Contradiction:

Improveprocessing simplicityVSAvoidglue application accuracy

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The control marking is applied to the printed product during the printing process before book block formation. This preliminary action provides pre-positioned detection targets that enable subsequent precise synchronization of glue application without adding complexity to the glueing process itself

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent replaces mechanical positioning for glue application with optical detection of control markings. The detection device optically identifies the marking position and triggers the glue head to apply adhesive at the correct location, substituting mechanical coordination with electronic control for precise glue placement

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Stability of the object's composition

If mechanical synchronization is used for variant changes, then device coordination is maintained, but adjustment time and costs increase

Engineering Contradiction:

Improvedevice coordinationVSAvoidvariant change speed

Core Design Contradiction:

Stability of the object's compositionVSAdaptability or versatility

Solution Approach 1:

The system dynamically adapts to different book block variants by detecting control markings that encode variant information. The detection device and control system adjust separation and glue application parameters in real-time based on the detected markings, enabling rapid reconfiguration without mechanical adjustment

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The control marking on the printed product itself provides the synchronization and variant information needed for processing. The system reads this information directly from the product, eliminating the need for external synchronization mechanisms or manual device adjustments when changing variants

Inventive Principle:

Principle #25Self-service

Data Source

PatentEP2711193B1Apparatus and method for using a device for producing a book block

Publication Date: 2015.07.01 SYST GMBH

Figure 1~2
Figure 3

AI summary

The device (1) has a detection device (20) detecting a control mark. A releasing agent device disconnects a bookblock and arrangement of printed products. Glue heads (30, 30') are utilized for applying glue on the printed products, where glue application is provided based on a detection signal of the detection device. The control mark is provided on the printed products and located in a foot trimming region. The detection device is provided with two sensors e.g. optical sensors, cameras and/or laser scanners, for detecting the control mark. An independent claim is also included for a method for stacking printed products to manufacture a bookblock.