Folder-Gluer Stacker Module for Aligned Box Ejection
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Solution Overview
Problem
Converting machines cause damage to folding boxes due to mechanical parts contacting their edges, leading to uneven stacks and compromised functional and aesthetic qualities.
Innovation Solution
A stacker module with a loading surface that descends vertically and an ejector that moves between retracted and extended positions, combined with a front abutment guide, to align and evacuate folding boxes, preventing misalignment and damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If movable mechanical parts are used to stack folding boxes, then the boxes can be transported and stacked, but the edges of the boxes are damaged and the stack becomes uneven
Solution Approach 1:
The patent introduces a front abutment guide as an intermediary element between the mechanical stacking system and the folding boxes. This guide component specifically protects the front leading edges of the boxes during stacking operations, preventing direct contact damage while still enabling the mechanical stacking process to function effectively.
Solution Approach 2:
The front abutment guide is positioned in advance at the stacking location to prevent edge damage before it occurs. By having the protective guide already in place during the stacking operation, the system proactively prevents harm to the box edges rather than attempting to correct damage after it occurs.
2Ease of operation
If multiple movable parts contact box edges during stacking, then boxes can be handled, but functional and aesthetic characteristics are compromised
Solution Approach 1:
The front abutment guide serves as a protective intermediary that allows mechanical handling to continue while preventing direct contact between harmful mechanical parts and the box edges. This maintains ease of operation while preserving box quality.
3Device complexity
If the loading surface is stationary, then the structure is simple, but the stack height cannot be adjusted for different production speeds
Solution Approach 1:
The loading surface is transformed from a stationary component to a dynamic one capable of vertical movement. This allows the loading surface to descend as boxes are stacked, accommodating different stack heights and production speeds while maintaining a relatively simple overall structure.
Solution Approach 2:
The vertical position of the loading surface is made variable rather than fixed. By allowing the loading surface to change its vertical parameter dynamically during stacking operations, the system can adapt to different production requirements and stack heights without significant structural complexity.
4Productivity
If boxes are stacked without guidance, then the stacking process is fast, but misalignment occurs and stacks are uneven
Solution Approach 1:
The front abutment guide acts as a mediating alignment component that ensures proper positioning of boxes during the stacking process. It provides the necessary guidance to maintain alignment precision while allowing the stacking operation to proceed at high speed without requiring complex positioning mechanisms.
Data Source
AI summary
The present invention relates to a stacker module for a folder-gluer machine, the stacker module being located downstream of a transfer module in a direction of transportation of the folder-gluer machine and configured to receive folding boxes from a conveyor in the transfer module. The stacker module comprises a loading surface configured to receive a plurality of folding boxes in order to form a stack and to descend vertically as the number of folding boxes on the loading surface increases, and a linearly movable ejector configured to eject the stack from the loading surface. A front abutment guide configured to move between an abutment and a clearing position to retain and release the stack.