Paper Stack Discharge Mechanism for Variable-Height Folded Packages
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Solution Overview
Problem
Existing paper folding machines face limitations in productivity and flexibility due to the need for formation tables to cover significant distances for package separation and transfer, leading to increased energy costs, mechanical wear, and reduced cycle efficiency, especially when producing packages of varying heights.
Innovation Solution
A machine with a folding or interfolding group, separation group, and transfer group, utilizing a displacement device to move the discharge device along a displacement direction, allowing for flexible production of packages of different heights with reduced strokes and increased productivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If formation tables cover significant distances for package separation and transfer, then package separation is achieved, but energy consumption increases and mechanical wear increases
Solution Approach 1:
Instead of moving the formation table upward to discharge packages, the discharge device is moved downward along the vertical axis to meet the formation table at a lower position. This inverts the traditional discharge mechanism, reducing the stroke distance and energy consumption while maintaining reliable package separation.
Solution Approach 2:
The discharge mechanism transitions from vertical upward movement to vertical downward movement along the Y-axis, utilizing gravitational assistance and reducing the mechanical work required. This dimensional approach to movement optimization decreases energy consumption and mechanical wear.
2Reliability
If formation tables cover significant distances for package transfer, then package discharge is achieved, but mechanical wear increases
Solution Approach 1:
The discharge device moves downward along the vertical axis to discharge packages, inverting the traditional upward movement approach. This reduces the stroke distance and consequently decreases mechanical wear on moving components while ensuring reliable package discharge.
Solution Approach 2:
The discharge device is designed with dynamic movement capability along the vertical axis, allowing it to adjust its position and stroke distance according to production requirements. This dynamic approach optimizes the transfer distance, reducing mechanical wear while maintaining discharge reliability.
3Productivity
If machine cycles per minute are increased to improve productivity, then production speed increases, but quality of formed packages decreases
Solution Approach 1:
The discharge device incorporates dynamic adjustment capabilities along the vertical axis, allowing optimization of the discharge stroke and timing. This dynamic control enables higher machine cycles per minute while maintaining package quality by precisely managing the discharge process at increased speeds.
Solution Approach 2:
The system employs feedback mechanisms to monitor and adjust the discharge process in real-time, ensuring that even at increased cycle rates, the package formation quality remains within acceptable parameters. This closed-loop control maintains precision despite higher operational speeds.
4Device complexity
If fixed stroke formation tables are used for package transfer, then structure is simplified, but adaptability to different package heights is reduced
Solution Approach 1:
The discharge device is designed with dynamic movement along the vertical axis, replacing fixed stroke formation tables. This dynamic configuration allows adjustment to different package heights while maintaining structural simplicity, thereby improving adaptability without significantly increasing device complexity.
Solution Approach 2:
The discharge device serves multiple functions: it can discharge packages of varying heights, adjust to different production requirements, and maintain operational simplicity. This multi-functionality provides adaptability to different package heights while keeping the overall structure relatively simple.
Data Source
AI summary
A machine for producing packages of folded or interfolded laminar products made of paper, in particular packages of napkins, tissues, towels, or similar products, comprising a folding or interfolding group, equipped with a first and a second folding or interfolding roll configured to fold or interfold a plurality of sheets of paper, and to obtain a stack of folded or interfolded sheets, according to a predetermined folding or interfolding configuration, which grows in height along a vertical forming direction. The machine comprises, furthermore, a separation group configured to separate a completed stack of folded or interfolded sheets, once that a predetermined height of said stack being formed is reached, from a following stack being formed. A transfer group is, furthermore, provided configured to transfer the completed stack on a discharge device configured to discharge the completed stack from the machine.