Intermittent-Continuous Packaging Machine for Tobacco Products
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Solution Overview
Problem
Prior art packaging machines for tobacco products, such as cigarettes in hinged-lid packets, face challenges in aligning with upstream production speeds and complex transfer processes, especially when packaging groups of articles, leading to inefficiencies and unsuitability for high-quality production.
Innovation Solution
A packaging machine with a combination of intermittent and continuous sections, utilizing a first wrapping material for semi-finished packets and a second wrapping material, like cardboard, to optimize the transfer and processing of articles, featuring an interface conveyor for seamless integration and parallel processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a continuous movement machine is used for packaging, then the packaging process can be performed without interruption, but the transfer of products from upstream processes becomes extremely complex and difficult to align with production speeds
Solution Approach 1:
The packaging machine is divided into two distinct sections: a first section with intermittent movement for receiving and initial packaging, and a second section with continuous movement for final packaging and output. This segmentation allows each section to operate at its optimal speed and mode, simplifying the transfer interface while maintaining overall productivity.
Solution Approach 2:
The machine employs dynamic movement patterns where the first section operates intermittently to match upstream production rhythms, while the second section operates continuously for efficient final packaging. This dynamic adaptation allows the system to align with varying production speeds without creating complex transfer mechanisms.
2Device complexity
If a single continuous section is used for packaging, then the machine structure is simpler, but the ability to integrate with upstream processes and optimize transfer is reduced
Solution Approach 1:
The machine is segmented into two functional sections with different movement characteristics. The first section's intermittent movement enables synchronization with upstream processes, while the second section's continuous movement optimizes final packaging. This segmentation provides adaptability without requiring a completely complex single-section design.
Solution Approach 2:
The first section employs periodic intermittent movement to receive and process products in sync with upstream production cycles. This periodic action pattern allows the machine to adapt to varying input rates from upstream processes while maintaining a relatively simple overall structure.
3Productivity
If the blank is progressively folded around the product in a single continuous process, then the packaging is completed efficiently, but mechanical stress on the semi-finished packet increases
Solution Approach 1:
The folding process is segmented into two stages: initial wrapping in the first section and final folding in the second section. This segmentation reduces mechanical stress on the semi-finished packet by completing only the necessary initial wrapping in the first section, then transferring to the second section for final packaging, rather than subjecting the packet to continuous folding forces.
Solution Approach 2:
The interface between the two sections acts as an intermediary, allowing the semi-finished packet to be transferred from the first section to the second section. This intermediary transfer point reduces mechanical stress by eliminating the need for the packet to remain in the high-stress folding zone throughout the entire packaging process.
Data Source
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AI summary
Described is a machine for packaging articles in the tobacco industry, in particular for packaging cigarettes using hinged-lid packets, which comprises a first section 100a which moves intermittently and a second section 100b which moves continuously. A succession of groups (A) of articles are fed to the first section (100a) and at least a first wrapping material (B) designed to wrap around each group (A) of articles to obtain a semi-finished packet (C) defining a partial wrapping of each group (A) of articles, in particular an inner wrapper. The second section (100b), which is configured to receive the semi-finished packets (C) from the first section (100a), and is fed with at least a second wrapping material (D), in particular a blank (G) made of cardboard, intended to wrap the semi-finished packet (C) to obtain a complete packet (E).