Interfolding Machine Dynamic Timing Adjustment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing interfolding machines face challenges in maintaining the quality of interfolded packs at varying operating conditions, particularly when increasing production velocity, as existing adjustment methods are either not adaptable or lead to deterioration in pack quality, and are prone to mechanical issues and vibrations.
Innovation Solution
An interfolding machine design that allows for precise adjustment of the position of the first folding fingers with respect to the angular position of the first folding roller using a toothed drive gear, toothed driven gear, and a guide movable by an actuator, controlled by velocity-based settings, enabling adjustments without halting the machine and reducing mechanical stress.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the operating velocity of the interfolding machine is increased to improve productivity, then production output increases, but the quality of interfolded packs deteriorates due to timing misalignment between folding fingers and folding roller
Solution Approach 1:
The patent implements dynamic timing adjustment that allows the folding mechanism to adapt its timing characteristics in real-time based on operating velocity. The system transitions from static timing (fixed at installation) to dynamic timing (adjustable during operation), enabling the folding fingers to maintain proper synchronization with the folding roller across varying speeds, thus preserving pack quality while allowing productivity increases
Solution Approach 2:
The patent changes the timing parameter (angular position relationship between folding fingers and folding roller) dynamically based on operating conditions. By providing mechanisms to adjust the timing parameter during operation, the system can optimize the interaction between folding components at different velocities, preventing quality deterioration that would otherwise occur at higher production speeds
2Ease of operation
If static timing adjustment is performed with the machine stationary to simplify adjustment procedures, then ease of operation is improved, but the system becomes inadequate for varying operating velocities, causing quality deterioration
Solution Approach 1:
The patent transforms the static timing adjustment system into a dynamic one by introducing adjustment mechanisms that enable timing modification during machine operation. This allows the system to maintain ease of operation while gaining adaptability to different velocities, as operators can adjust timing on-demand without halting production
Solution Approach 2:
The patent enables the timing system to self-adjust to varying operating conditions through provided adjustment mechanisms. Rather than requiring complex pre-calibration for each velocity, the system allows operators to make straightforward timing adjustments during operation, making the system both easy to operate and adaptable to different speeds
3Ease of manufacture
If mechanical oscillators with cams are used to transform rotary motion to oscillating motion, then the folding function is achieved, but mechanical stress and vibrations increase, reducing component durability
Solution Approach 1:
The patent replaces traditional mechanical oscillators with cams that generate high mechanical stress and vibrations with alternative mechanisms that achieve the same folding function with reduced mechanical impact. This substitution maintains the essential folding functionality while improving component durability by eliminating the harmful vibrations and stress concentrations inherent in cam-based oscillating systems
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
An interfolding machine (100) comprising means for transforming a rotary motion into an oscillating motion which move the first folding fingers (13) and which are coupled in input to a toothed driven gear (3) receiving drive from a toothed drive gear (2) via a toothed belt or a chain (4) and means (5) for making the first folding roller (11) and the toothed drive gear (2) rotate in synchrony. The interfolding machine (100) advantageously comprises a guide (6) which engages the toothed belt or the chain (4) and which is movable with respect to the frame (10) in such a way as to vary the pathway of one of the branches between the toothed drive gear (2) and the toothed driven gear (3), an actuator (7) which moves the guide (6) so as to regulate the position of the first folding fingers (13) with respect to the angular position of the first folding roller (11) and control means (9).