Flexible Suction Plate for Book Block Spine Alignment
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Solution Overview
Problem
Existing devices for attaching a rear adhesive strip with headbands to a book block spine face challenges in precise alignment and damage prevention at high cycle rates, requiring complex adjustments and sensitive cutting surface handling.
Innovation Solution
A suction plate guided by a flexible guide element along the transfer movement, eliminating the need for a feeler finger and allowing for precise positioning and adjustment without damaging the book block, enabling smoother and more accurate application of the adhesive strip at higher production speeds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a feeler finger is used on the suction plate for alignment, then the suction plate can be aligned with the book block spine, but the feeler finger causes jolts and impacts that damage cutting surfaces and headbands at high cycle rates
Solution Approach 1:
The patent removes the feeler finger component from the suction plate assembly entirely. Instead of using a feeler finger to detect and align with the book block, the invention uses a guide curve that passively guides the suction plate into the correct position through its geometric shape, eliminating the source of mechanical damage while maintaining alignment precision.
Solution Approach 2:
The guide curve acts as an intermediary element between the suction plate and the book block. Rather than direct contact alignment via feeler finger, the guide curve mediates the alignment process by constraining the suction plate's movement path, allowing precise positioning without the harmful direct impacts caused by feeler finger contact.
2Manufacturing precision
If a long stationary guide curve is used for smooth alignment movement, then the alignment is more accurate and jolt-free, but the device complexity increases and adjustment becomes difficult
Solution Approach 1:
The patent makes the guide curve adjustable rather than fixed, allowing it to be adapted to different book block positions and sizes. This dynamic capability enables the same guide curve structure to serve multiple functions and accommodate variations in production requirements without increasing inherent device complexity.
Solution Approach 2:
The guide curve is designed as a modular or adjustable component that can be repositioned or reconfigured. This segmentation allows the guide curve to be optimized for different alignment scenarios and makes adjustments simpler, as individual segments can be modified without redesigning the entire guide structure.
3Measurement precision
If the feeler finger is adjusted while the book production line is at a standstill, then the alignment can be corrected, but the productivity decreases due to line stoppages
Solution Approach 1:
The guide curve is designed to automatically compensate for position variations through its geometric design and adjustable mounting. The system self-adjusts to accommodate different book block positions without requiring manual intervention or line stoppages, maintaining continuous production while ensuring proper alignment.
4Ease of operation
If the suction plate is slidably mounted with resilient support, then the alignment movement is possible, but shocks occur when cam rollers run against guide curves at high cycle rates
Solution Approach 1:
The guide curve is designed with optimized curvature that matches the movement path of the suction plate. This curved guidance eliminates abrupt directional changes and impacts that occur with straight-line guidance and cam rollers, providing smooth, shock-free operation even at high cycle rates while maintaining the necessary alignment movement capability.
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
Ensures reliable and precise application of the rear adhesive strip, reducing the risk of damage and allowing for continuous operation at higher cycle rates with improved alignment and reduced mechanical stress.
Implementation Method 1
a suction plate (10) which is moved back and forth in a transfer movement (ÜB) between a delivery position (35) and the spine (1a) of the book block (1)
Data Source
Figure 1
Figure 2
AI summary
The device has an alignment device (40) for aligning a back lining strip (5) for a book block (1), and a suction plate (10) positioned after a bearing of head- and foot sections (1b) of the book block and moved in a back longitudinal direction. The suction plate is mounted on a flexible folding plate (41) that is extended along a transfer movement of a retrieval position (35) to a back (1a) of the book block. An end (41.1) of the folding plate is positioned in the back longitudinal direction corresponding to the bearing of sections of the book block and attached to the back of the book block.