Bag Opening Holding Device for Coffee Powder Compaction
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Solution Overview
Problem
Existing technologies face challenges in ensuring complete and even filling of coffee powder into bags, particularly in compacting the powder to remove air and maintain the powder in an air-free state, while preventing collisions between the stamp and the bag wall during compaction.
Innovation Solution
A device with holding elements that can be moved from an initial position to a spanned position within the opening of the bag, allowing the bag wall to be securely clamped at the corners, thereby improving the control over the opening of the bag and facilitating even compaction of the coffee powder.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the stamp is shaped precisely adapted to the opening shape, then the compaction evenness is improved, but collisions between the stamp and bag wall occur
Solution Approach 1:
The holding elements are moved into the deflected position before the compaction process begins, preliminarily shaping the bag wall to create taut sections that prevent collisions during subsequent stamp insertion and compaction operations
Solution Approach 2:
The holding elements apply preliminary counter-action to the bag wall deformations by creating taut wall sections that oppose and prevent the inward deformations that would cause stamp-bag wall collisions during compaction
2Ease of manufacture
If the bag wall is allowed to deform naturally, then the filling process is simpler, but the compaction reliability deteriorates due to unpredictable opening shape
Solution Approach 1:
The device performs preliminary action by positioning holding elements into the deflected position before compaction, preliminarily controlling the bag wall shape to create predictable taut sections that ensure reliable compaction while maintaining simple filling operations
Solution Approach 2:
The holding elements change the geometric parameters of the bag wall by creating taut sections with controlled tension and position, transforming the unpredictable deformed state into a controlled configuration that ensures compaction reliability
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
Device (1) for holding the opening (2) of a bag (3), in particular in a filling machine (4) for filling coffee powder (5), wherein the bag (3) has a polygonal bag base (6) from which a circumferential bag wall (7) extends upwards and surrounds the opening (2) opposite the bag base (6), wherein the device (1) has holding elements (8) which, in initial positions (9) in a central area (10) of the bag base (6), which lies within an opening area (11) of the opening (2), can be inserted from above into the opening (2) in order to subsequently be moved apart within the opening (2) into deflected positions (12) in order to stretch the bag wall (7) at corners (13),wherein a direction of movement (22) of the retaining elements (8) from the starting positions (9) to the deflected positions (12) is aligned at an approach angle (23) to both wall surface sections (24) of the bag wall (7) that meet in a corner (13) of the bag (3).