Simultaneous Booklet Square Folding and Trimming
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Solution Overview
Problem
Existing post-processing machines for printed booklets are large and inefficient, requiring multiple machines in series for square folding and trimming, which limits their ability to handle varying booklet sizes and increases processing time and wear.
Innovation Solution
A compact post-processing device with a movable cutting assembly and square folding assembly that adjusts distance to accommodate varying booklet sizes, combined with a conveying system featuring two feeding assemblies to automate movement and reduce machine vibration, allowing simultaneous square folding and trimming.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple separate machines are used for square folding and trimming, then each machine can be optimized for its specific function, but the overall device size increases and processing time increases due to sequential operations
Solution Approach 1:
The patent combines square folding and trimming functions into a single integrated machine. The cutting assembly and square folding assembly share a common platform and work on the booklet simultaneously at the same working position, eliminating the need for sequential processing through separate machines and reducing overall device footprint.
Solution Approach 2:
The patent arranges the cutting assembly and square folding assembly in a spatial configuration where both operations occur at the same longitudinal position but at different transverse positions. This dimensional arrangement allows simultaneous operations without interference, achieving compact footprint while maintaining high productivity.
2Adaptability or versatility
If the cutting assembly and square folding assembly are fixed at a set distance, then the machine structure is simplified, but the machine cannot handle varying booklet sizes
Solution Approach 1:
The patent makes the cutting assembly and square folding assembly movable along the longitudinal direction of the machine. This dynamic positioning capability allows the distance between the two assemblies to be adjusted according to different booklet sizes, enabling the machine to handle a wide range of booklet dimensions while maintaining a relatively simple overall structure.
3Manufacturing precision
If the booklet is held static during processing, then processing precision is improved, but the machine cannot accommodate varying booklet sizes efficiently
Solution Approach 1:
The patent divides the processing system into two independent parts: a static clamping assembly that holds the booklet fixed for precise processing, and movable cutting and square folding assemblies that can be positioned at different locations. This segmentation allows the booklet to remain stationary during processing while the tool assemblies adapt to different booklet sizes, achieving both high precision and versatility.
4Productivity
If automated feeding mechanisms are used, then processing speed increases and booklet movement is stabilized, but the device complexity increases
Solution Approach 1:
The patent employs a conveying system with feeding assemblies that serve multiple functions: they transport booklets through the machine, position booklets at the working location, and stabilize booklets during processing. This multi-functional design achieves high processing efficiency while avoiding the need for separate dedicated mechanisms for each function, thereby limiting the increase in overall device complexity.
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
Enables faster and more efficient processing of a wide range of booklet sizes on a smaller footprint, reducing processing time and wear by keeping the cutting assembly static and using automated feeding mechanisms to stabilize booklet movement.
Implementation Method 1
a press means for applying pressure along the spine of the booklet for deforming the spine to give it the desired square shape
Implementation Method 2
a cutting assembly for cutting away an outer portion of the sheets of the booklet, said cutting assembly comprising a knife and a support
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
A post-processing device (1) for simultaneously performing both square folding and trimming of a booklet (3), wherein the device (1) comprises a square folding assembly (8) and a cutting assembly (5) at least one of which is movably attached to the post-processing device (1), and a clamping assembly (17) for holding the booklet (3) static during operation of the square folding assembly (8) and the cutting assembly (5). Also, a method of operating such a device (1).