Parallel Shaft System with Exchangeable Format Parts for Foil Bags
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Solution Overview
Problem
The existing shaft systems for processing foil bags require frequent and costly replacements of integral receiving shafts to accommodate changes in bag width, length, or thickness, which is cumbersome and ergonomically disadvantageous, as they cannot be easily adapted to different bag formats without shifting the center of the shafts.
Innovation Solution
A shaft system with exchangeable format parts that can be adjusted to vary the width and contour of the receiving shafts and retaining elements, allowing for flexible adaptation to different bag formats without the need for machine-driven adjustments or shifting the shaft center, using a fastening mechanism that maintains fixation even without energy supply.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If integral receiving shafts are used, then structural simplicity is maintained, but adaptability to different bag formats is poor
Solution Approach 1:
The receiving shaft is divided into a stationary frame part and exchangeable format parts that can be replaced to adapt to different bag formats. This segmentation allows the system to maintain structural simplicity while achieving high adaptability through modular component replacement.
Solution Approach 2:
The system transitions from a static integral shaft structure to a dynamic configuration where format parts can be exchanged based on bag format requirements. This enables the receiving shaft to adapt its dimensions and contour dynamically without replacing the entire structure.
2Measurement precision
If machine-driven adjustments are used, then precision of shaft positioning is improved, but operational complexity and cost increase
Solution Approach 1:
The format parts are designed with self-aligning features and manual handling capabilities that allow operators to position and install format parts without machine-driven assistance. The geometry of the format parts and frame part ensures precise positioning through self-service manual operation.
3Adaptability or versatility
If frequent shaft replacements are performed, then adaptability to different bag formats is improved, but productivity decreases
Solution Approach 1:
By segmenting the shaft into a permanent frame and interchangeable format parts, the system enables quick format changes without replacing the entire shaft assembly. This reduces downtime and maintains productivity while achieving format adaptability.
Solution Approach 2:
Format parts are pre-designed and pre-manufactured in different configurations to match specific bag formats. This preliminary preparation allows for rapid exchange of format parts without requiring complex adjustments or recalibrations during format changes.
4Ease of manufacture
If integral shafts are used, then manufacturing simplicity is maintained, but ease of repair and maintenance is poor
Solution Approach 1:
The shaft system is segmented into a durable frame structure and consumable format parts. This segmentation simplifies maintenance by allowing easy replacement of worn format parts without affecting the permanent frame, reducing overall maintenance complexity and cost.
Data Source
AI summary
The invention relates to a shaft system comprising a plurality of receiving shafts arranged in parallel side by side for receiving foil bags, wherein the receiving shafts are bordered by walls formed by exchangeable format parts, wherein as a result of the exchange of the format parts the width and/or contour of the receiving shafts and/or the shape of retaining elements of the format parts is variable.