Rotating Drum Transfer Mechanism for Tubular Blanks
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Solution Overview
Problem
Existing systems for transferring tubular blanks from a flattened configuration to an open configuration are complex, require significant space, and complicate format changes due to the need to move a rotating drum and chains, leading to a large overall size and complexity.
Innovation Solution
A system where tubular blanks are transferred directly from a rotating drum to a supply line using pick-up and folding mechanisms that rotate in the opposite direction of the drum, eliminating the need for additional space and simplifying format changes by translating the entire structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a rotating drum with work stations and chain conveyors is used to transfer and open tubular blanks, then the blank opening function is achieved, but the overall apparatus size becomes large and the structure becomes complex
Solution Approach 1:
The patent merges the drum rotation function with the blank opening function by integrating folding means directly onto the drum periphery. The work stations are combined with the drum structure itself, eliminating the need for separate chain conveyors and abutting means. This integration reduces the number of independent components and simplifies the overall apparatus while maintaining the blank opening capability.
Solution Approach 2:
The patent extracts and eliminates unnecessary components from the traditional system. Specifically, it removes the chain conveyors, separate abutting means, and complex cam mechanisms that were previously required. The essential function of transferring and opening blanks is achieved through the simplified drum with integrated folding means, taking out only the necessary elements while discarding redundant ones.
2Ease of operation
If additional space is provided for work stations and abutting means, then blank transfer and opening is facilitated, but the overall apparatus size increases
Solution Approach 1:
The patent applies the nesting principle by placing the work stations and folding means within the peripheral space of the drum itself. The folding means are positioned on the drum periphery where they can access blanks during rotation, effectively nesting the opening function within the transfer mechanism's existing footprint. This eliminates the need for additional external space for separate work stations and abutting means.
3Adaptability or versatility
If the drum and chains are moved for format changes, then different blank formats can be processed, but the changeover process becomes complex and time-consuming
Solution Approach 1:
The patent applies dynamics by making the folding means adjustable rather than fixed. The folding means can be repositioned along the drum periphery to accommodate different blank formats, and the drum rotation speed can be dynamically adjusted. This dynamic adaptability allows format changes without requiring physical movement or reconfiguration of the entire drum and chain system, simplifying the changeover process while maintaining versatility.
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
This solution streamlines the transfer process, reduces overall size, and simplifies format changes without requiring additional space or complex cam mechanisms, enabling efficient and compact operation.
Implementation Method 1
a store (100) containing a stack (P) of tubular blanks (1), means (200) for removing the bottom blank from the stack, a drum (300) kept in constant rotation, work stations (20) transiting intermittently in said zone, each station (20) being provided with retaining means (22) destined to receive, from the pick-up means (12), upstream of said zone, the first flap (1A) of the blank (1) picked up from the base of the stack
Data Source
Figure 1
Figure 2A~2B
Figure 3A
AI summary
A system for transferring tubular blanks in an open configuration to a loop-wound supply line of a packing machine, comprising an apparatus destined to intermittently be positioned in a zone (Z) situated in front of a head (440) of the line, a tubular blank (150), in open configuration, being hooked to relative retaining means (22); a rotating member (510), activated in phase relation with a movement of the line, arranged between the longitudinal walls (490) of the line coaxially to the head, and provided with a series of transfer means (525), angularly equidistanced along a circumference tangential to the upper branch, the transfer means involving, in the tract facing towards the head (440), a corresponding dynamic seating (460) for encountering, in the zone (Z), a flap (1C) of the tubular blank (150), the tubular blank being freely inserted in the dynamic seating (460), and subsequently hooking it, the transfer means being deactivated in proximity of the upper branch (470) in phase relation with the arranging from radial to vertical of the segments (425) first delimiting the dynamic seating (460) and finally the compartment (450) corresponding to the dynamic seating (460).