Bag Packaging Forming Shoulder Guide Device
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Solution Overview
Problem
Existing bag pack manufacturing devices face issues with packaging material web misalignment at the forming shoulder due to external influences, leading to incorrect folds and reduced stability in bag packs, particularly affecting intermittent processes.
Innovation Solution
A device with a forming station featuring a guide device comprising clamp-shaped elements with adjustable jaws, ensuring precise guidance of the packaging material web along pre-sealed folds, preventing misalignment and ensuring accurate placement of folds at the bag pack edges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the packaging material web is fed to the forming shoulder without additional guide elements, then the device structure remains simple, but the web runs over the forming shoulder in incorrect positions due to external influences like feed speed variations and roll winding issues
Solution Approach 1:
The patent introduces clamp-shaped guide elements as intermediary components between the packaging material web and the forming shoulder. These guide elements actively mediate the web's path, preventing it from running over the forming shoulder in incorrect positions. The guide elements serve as a mediating structure that compensates for external disturbances without requiring complex overall device redesign
Solution Approach 2:
The patent adds guide elements that extend in a direction perpendicular to the web's conveying direction. This dimensional addition creates a new spatial dimension for control, allowing the web to be guided precisely across the forming shoulder width without affecting the forward motion, thus resolving the positioning accuracy issue while maintaining structural simplicity
2Productivity
If the pre-sealed areas are not exactly on the edges of the bag pack, then the production process can be faster, but the bag packs produce incorrect folds in the bottom area reducing quality
Solution Approach 1:
The patent implements guide elements that are positioned and configured in advance to pre-determine the correct path of the packaging material web. By establishing the proper web trajectory before the forming process begins, the pre-sealed areas are automatically positioned exactly at the bag pack edges, ensuring correct fold placement while maintaining production speed
3Manufacturing precision
If clamp-shaped guide elements with jaws are introduced to guide the web, then the web positioning accuracy improves, but the device complexity increases
Solution Approach 1:
The patent applies guide elements with different jaw lengths at specific local positions. The first jaw is shorter and arranged closer to the forming shoulder, while the second jaw is longer. This local differentiation optimizes the guidance function at each position without requiring the entire device to be complex, achieving precise web guidance through localized structural variations
Solution Approach 2:
The guide elements are segmented into multiple jaws (first and second jaws) with different functions and lengths. This segmentation allows each jaw to perform a specific guidance function, with the shorter first jaw handling the critical area near the shoulder and the longer second jaw providing additional guidance, thereby achieving high precision without excessive overall complexity
Data Source
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AI summary
The present invention relates to a device for producing pouch packaging, comprising a folding station (52) for forming folds in a packaging material web (60), a sealing station (54) for sealing the formed folds, and a forming station (56) for forming a wrapping material tube, wherein the forming station (56) comprises a forming shoulder (10) with a guide device (14), wherein the guide device (14) comprises a first clamping element (15) and a second clamping element (16), and wherein the first and second clamping elements (15, 16) each have a pair of jaws with a first jaw (17) and a second jaw (18) for guiding the packaging material web (60) at the sealed folds (76).