Paper Folding Device Wrinkle Prevention
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Solution Overview
Problem
Conventional paper folding devices often result in wrinkles during the folding process, require complex adjustments for different folding specifications, and can be affected by glue adhesion within the folding mechanism, leading to quality issues.
Innovation Solution
A paper folding device that includes a pair of conveyance rollers, a switching gate plate, a folding plate, and a control unit, which allows for automatic adjustment of the folding position and prevents wrinkles by guiding the paper sheet along specific paths without the need for a paper sheet insertion space or stopper.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a stopper is provided in the paper sheet insertion space to prevent the paper sheet from proceeding, then the paper sheet can be folded properly, but the device complexity increases and manual adjustment is required
Solution Approach 1:
The patent removes the stopper component from the folding device. Instead of using a stopper to prevent the paper sheet from proceeding, the invention uses the natural conveying action of the rollers and the positioning of the folding plate to achieve the folding effect, thereby eliminating the need for a stopper and reducing device complexity
Solution Approach 2:
The folding plate serves multiple functions: it guides the paper sheet, positions the fold line, and performs the folding action itself. This multi-functional design replaces the need for separate stopper and folding components, simplifying the overall device structure while maintaining folding precision
2Ease of operation
If an automatic moving mechanism of the stopper is provided in the device, then the operability is good, but the cost is high
Solution Approach 1:
The patent eliminates the automatic moving mechanism of the stopper by removing the stopper itself. The folding operation is achieved through the coordinated action of the conveying rollers and the folding plate, which automatically perform the folding function without requiring additional actuation mechanisms
Solution Approach 2:
The folding plate and conveying rollers work together in a self-service manner, where the conveying rollers naturally position the paper sheet and the folding plate automatically performs the folding action based on the paper sheet's position, eliminating the need for complex automatic control mechanisms
3Manufacturing precision
If the folded piece portions are conveyed along a conveyance surface constituting the same plane as the folding unit, then wrinkles can be prevented, but the device cannot accommodate various folding specifications
Solution Approach 1:
The patent employs a movable folding plate that can adjust its position and angle dynamically. This dynamic adjustment capability allows the device to accommodate various folding specifications while maintaining the benefit of conveying folded portions along the same plane conveyance surface, thus preventing wrinkles
4Manufacturing precision
If a paper sheet insertion space (diverging path) is provided for folding, then the paper sheet can be folded, but the structure becomes complex and expensive
Solution Approach 1:
The patent removes the paper sheet insertion space (diverging path) from the device structure. The folding is achieved directly on the conveyance surface using the folding plate and conveying rollers, eliminating the need for a separate insertion space and reducing structural complexity
Solution Approach 2:
The patent merges the folding function with the conveyance surface. Instead of having a separate insertion space for folding, the folding operation is integrated into the conveyance path, where the folding plate and rollers work together to perform folding directly on the main conveyance surface, simplifying the overall structure
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
The solution effectively prevents wrinkles, simplifies the configuration and operation of the folding device, and maintains product quality by avoiding glue adhesion issues, all while being cost-effective and easy to use.
Implementation Method 1
a pair of first conveyance rollers disposed on an upstream side in a paper sheet conveyance direction, a pair of second conveyance rollers disposed on a downstream side in the paper sheet conveyance direction
Data Source
Figure 1
Figure 2(a)~2(c)
Figure 3(a)~3(b)
AI summary
A paper folding device that folds a planar paper sheet (100) while conveying the paper sheet along a paper sheet conveyance surface (200) includes a pair of first conveyance rollers (86) disposed on an upstream side in a paper sheet conveyance direction, a pair of second conveyance rollers (87) disposed on a downstream side in the paper sheet conveyance direction, a switching gate plate (63) installed on the paper sheet conveyance surface between both pairs of the rollers, a folding plate (62) disposed above the switching gate plate, and a control unit that controls an operation of an entire device.