Twin-Sheet Wrapping Conveyor for High-Speed Cigarette Pack Sealing
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Solution Overview
Problem
Existing packing machines for producing rigid packs of cigarettes with twin sealed wraps are inefficient in terms of production speed and format change operations, lacking simplicity and flexibility.
Innovation Solution
A wrapping unit and method that simultaneously folds two wrapping sheets around two groups of smoking articles, utilizing a packing machine with specific conveyor and drum configurations to achieve high-speed production and quick format changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional packing machines produce twin sealed wraps using separate folding devices, then the wraps can be formed individually, but the production speed is reduced and format change operations become complex and time-consuming
Solution Approach 1:
The patent combines two separate folding devices into a single integrated folding device that can simultaneously fold two wrapping sheets around two groups of smoking articles. This merging reduces device complexity while maintaining the capability to produce twin sealed wraps, thereby resolving the contradiction between productivity and device complexity.
Solution Approach 2:
The integrated folding device is designed with universal functionality to handle both single and twin wrap configurations. By incorporating adjustable components and a dual-sheet feeding mechanism, the device can adapt to different production modes without requiring separate specialized equipment, thus improving productivity while controlling complexity.
2Adaptability or versatility
If packing machines use complex folding mechanisms for twin wraps, then wrapped packs can be produced, but format change operations become difficult and time-consuming
Solution Approach 1:
The packing machine incorporates dynamic and adjustable components that allow rapid reconfiguration between different pack formats. The folding device can be adjusted to accommodate various wrapping sheet sizes and configurations, enabling quick format changes without requiring complex fixed mechanisms, thus improving adaptability while managing device complexity.
3Manufacturing precision
If separate folding devices are used for each wrapping sheet, then individual wraps can be formed precisely, but the overall production efficiency decreases
Solution Approach 1:
The patent merges two folding operations into a single integrated folding device that performs both folds simultaneously. This maintains manufacturing precision for each individual wrap while doubling the production speed, as both wrapping sheets are folded in one synchronized motion rather than sequentially, thereby resolving the contradiction between precision and productivity.
Data Source
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AI summary
Wrapping unit (B) and wrapping method to produce, together, two sealed wraps (3). The following are provided: a wrapping conveyor (39), which is designed to move the two groups (14) of smoking articles next to one another and coupled to the two wrapping sheets (18) along a straight and horizontal wrapping path (P3); two folding devices (52), each coupled to the wrapping conveyor (39) and arranged along the wrapping path (P3) in order to fold two opposite ends of a wrapping sheet (18) around a corresponding group (14) of smoking articles; and two sealing devices (55), each coupled to the wrapping conveyor ((39)) and arranged along the wrapping path (P3) downstream of the respective folding device (52) to form a seal on two sides of a wrapping sheet (18) folded around a corresponding group (14) of smoking articles.