Movable Drawer Wall for High-Speed Cigarette Wrap Transport
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Solution Overview
Problem
Existing packer machines face challenges in transporting wraps of metallized paper around cigarettes without causing damage or excessive deformation during high-speed production, as the wraps lack adhesive and are prone to losing their shape if not properly contained.
Innovation Solution
A packer machine with a transport unit featuring a drawer with a movable containing wall that adjusts its position to securely hold the wraps, using a pneumatic actuator to maintain constant compression and prevent uncontrolled deformation, ensuring safe transport at high speeds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the wrap is transported without sufficient containment, then the wrap can move freely during high-speed production, but the wrap becomes excessively free and undergoes uncontrolled deformation since it lacks adhesive
Solution Approach 1:
The containing wall is made movable rather than fixed, allowing it to adapt its position dynamically. The wall can move between a first position that provides more space and a second position that provides tighter containment, enabling the system to respond to different production conditions while maintaining wrap shape stability
Solution Approach 2:
The containment parameter is changed by adjusting the position of the containing wall. By varying the wall position between two extreme positions, the degree of containment is modified to prevent uncontrolled deformation while allowing necessary movement during high-speed production
2Shape
If the wrap is compressed strongly during transport, then the wrap shape is maintained, but the wrap may be damaged due to excessive compression
Solution Approach 1:
The containing wall's movable nature allows the compression force to be dynamically adjusted. The wall can move to accommodate the wrap's natural expansion tendencies while still providing sufficient containment to maintain shape, preventing both deformation and damage from excessive compression
Solution Approach 2:
The movable containing wall acts as a cushioning element that can yield slightly under compression loads. This beforehand cushioning prevents excessive compression forces from being transmitted to the wrap, protecting its structural integrity while still maintaining shape
3Reliability
If a fixed containing structure is used to hold the wrap, then the wrap is contained securely, but the device complexity increases and adaptability to different production speeds is reduced
Solution Approach 1:
Rather than using a complex fixed structure with multiple adjustment mechanisms, the invention employs a simple movable wall that can shift between two positions. This dynamic simplicity maintains containment reliability while minimizing device complexity
Solution Approach 2:
The movable containing wall serves multiple functions: it provides containment, allows for adaptation to different production speeds, and can accommodate variations in wrap dimensions. This single element performs what would otherwise require multiple separate adjustment mechanisms
Data Source
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Figure 3
Figure 4~5
AI summary
A packer machine (9) to produce a rigid pack (1) for smoking articles having: a wrap (3) formed by folding a wrapping sheet (7) around a group (5) of smoking articles, and an outer container (2) formed by folding a blank (8) around the wrap (3). The packer machine (9) has a transport unit (22), which is interposed between a wrapping conveyor (13) and a transfer conveyor (19) and is configured to receive the wrap (3) from the wrapping conveyor (13) and release the wrap (3) in the transfer conveyor (19). The transport unit (22) has: a drawer (25) provided with a frame (26), in which is defined a pocket (27) configured to house the product (3) and delimited, on a side, by a containing wall (30), which, in use, comes into contact with the product (3); and a conveyor device (32) configured to move the drawer (25) along the wrapping path (P2). 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) smaller than the first dimension (D1).