Movable Drawer Pocket for High-Speed Wrap Transfer Stability
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Solution Overview
Problem
Existing packer machines face challenges in safely transporting wrapping sheets around smoking articles at high speeds without causing damage or excessive deformation, and require frequent maintenance due to wear of flexible walls used in transport units.
Innovation Solution
A packer machine with a transport unit that uses a drawer system with movable containing walls and a pneumatic or mechanical actuator to maintain consistent compression of wrapping sheets, ensuring they are not excessively loose or compressed, and employs a conveyor system to handle wrapping sheets efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a flexible wall is used in the transport unit to compress the wrapping sheet, then the wrapping sheet is contained and not excessively loose, but the flexible wall is subject to rapid wear requiring frequent replacement
Solution Approach 1:
The patent removes the flexible wall component from the transport unit and replaces it with rigid drawer structures. The drawer's containing wall provides the necessary compression and containment function without the wear issues of flexible materials, effectively extracting the problematic element while preserving the functional requirement.
Solution Approach 2:
The invention replaces the expensive, frequently replaced flexible wall with a durable rigid drawer structure. The drawer can be easily manufactured and replaced if needed, but its rigid construction means it doesn't suffer from the rapid wear that plague flexible components, reducing long-term maintenance costs and downtime.
2Manufacturing precision
If the wrapping sheet is compressed to maintain shape, then deformation is prevented, but excessive compression can damage the wrapping sheet
Solution Approach 1:
The patent modifies the compression parameter by using a rigid drawer with a containing wall that provides controlled, uniform pressure distribution. This replaces the variable and potentially excessive compression from flexible walls with a consistent, predetermined compression level that maintains wrap shape without damaging the wrapping sheet.
Solution Approach 2:
The containing wall is positioned to contact and compress only the specific regions of the wrapping sheet that require shaping, applying localized pressure where needed rather than uniform compression throughout. This prevents damage to areas that don't require compression while maintaining shape where necessary.
3Productivity
If high production speed is maintained, then productivity increases, but the wrapping sheet may become excessively loose or deformed during transport
Solution Approach 1:
The patent employs a movable drawer system that can dynamically adjust its position and compression force during the transport cycle. The drawer moves with the conveyor belt motion, maintaining consistent containment and compression forces even at high speeds, preventing the wrapping sheet from becoming loose or deformed during rapid transport.
Solution Approach 2:
The wrapping sheet is compressed and contained within the drawer before transport begins. This preliminary containment action ensures the wrap maintains its shape and position throughout the high-speed transport process, preventing deformation that would otherwise occur at high production speeds.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution allows for safe and reliable transport of wrapping sheets at high production speeds with minimal maintenance, preventing deformation and damage while maintaining the shape of glue-free wrapping sheets.
Implementation Method 1
an actuator device (40) that can be operated to move the containing wall (30) towards the transport position
Implementation Method 2
there is also an elastic element (66) that can be deformed when the actuator device (40) moves the containing wall (30) towards the loading and unloading position and that pushes the containing wall (30) towards the transport position
Data Source
Figure 1~2
Figure 3
Figure 4~5
AI summary
A packer machine (9) for producing a wrap (3) by folding a wrapping sheet (7) around a group (5) of smoking articles. The packer machine (9) has a transport unit (22), which is interposed between a folding conveyor (13) and a transfer conveyor (19) and is configured to receive the wrap (3) from the folding conveyor (13) and to transfer the wrap (3) to the transfer conveyor (19). The transport unit (22) has: a drawer (25) provided with a frame (26), in which one pocket (27) is defined, which is configured to house the wrap (3) and is delimited, on one side, by a containing wall (30), which, in use, comes into contact with the wrap (3); and a conveyor device (32) configured to move the drawer (25) along a transfer path (P4). The containing wall (30) is mounted on the frame (26) in a movable manner so as to move between a loading and unloading position, in which it gives the pocket (27) a first dimension (D1), and a transport position, in which it gives the pocket (27) a second dimension (D2), which is smaller than the first dimension (D1). The transport unit (22) has an actuator device (40), which can be operated to move the containing wall (30) between the loading and unloading position and the transport position.