Swinging Abutment Elements for Book Cover Alignment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing bookbinding machines face challenges in efficiently and precisely applying covers to book blocks due to issues with abutment devices, such as mechanical stops that require speed reduction or complex levers, and pneumatic cylinders that are costly and require precision.
Innovation Solution
The implementation of swinging abutment elements of a passive type in the bookbinding machine, which rotate automatically in response to the cover passing through and are blocked in an active position by a blocking mechanism, ensuring precise alignment and application of covers without the need for actuators or complex control systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a stationary mechanical stop is used as an abutment device, then the cover alignment is simplified, but the feeding speed must be reduced to prevent bouncing back
Solution Approach 1:
The patent applies the dynamics principle by transforming the stationary mechanical stop into a movable abutment element that can swing between an active position (blocking the cover) and a retracted position (allowing passage). This dynamic movement eliminates the need to reduce feeding speed, as the abutment element automatically moves out of the way during cover insertion and returns to block the cover after positioning, thereby resolving the contradiction between simplified structure and maintained productivity
2Manufacturing precision
If levers driven by pneumatic cylinders are used to level covers, then precise blocking is achieved, but the machine complexity and cost increase
Solution Approach 1:
The patent applies the self-service principle by designing an abutment element that automatically performs its function without external actuation. The abutment element swings into the active blocking position solely under the action of the cover itself as it passes through, and returns to the retracted position automatically after the cover has passed. This self-actuating mechanism eliminates pneumatic cylinders and complex control systems while maintaining precise alignment, thereby resolving the contradiction between manufacturing precision and device complexity
Solution Approach 2:
The patent replaces the pneumatic-mechanical system (cylinders driving levers) with a simpler passive mechanical system based on gravitational force and geometric constraints. The abutment element is suspended in a manner that allows it to swing freely under gravity and cover interaction, eliminating the need for powered actuation while achieving the same alignment function, thus resolving the contradiction between precision and complexity
3Adaptability or versatility
If manual adjustment of mechanical stop is performed for format changes, then adaptability is achieved, but machine downtime increases
Solution Approach 1:
The patent applies the dynamics principle by making the abutment element automatically adjustable through its swinging motion. The abutment element can be positioned at different angular orientations to accommodate different cover formats, and this positioning is achieved automatically through the swinging mechanism rather than manual adjustment. This eliminates machine downtime during format changes while maintaining adaptability, resolving the contradiction between versatility and time loss
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A solution for aligning corresponding covers (215) to be applied to book blocks (205) is proposed. A corresponding bookbinding machine (100) comprises an abutment device (230) for acting as an abutment for each cover (215) in correspondence with the respective book block (205). The abutment device (230) comprises one or more abutment elements (250a,250b) that are rotated in a direction by the cover (215) passing through them and rotate automatically in opposite direction in response to the cover (215) going beyond the abutment elements (250a,250b); blocking means (415) prevent the abutment elements (250a,250b) from being rotated in this opposite direction beyond an active position by the cover (215) returning towards them, thereby blocking the cover (215) in abutment against the abutment elements (250a,250b).