Packaging Machine Independently Controllable Movers
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Solution Overview
Problem
Existing packaging machines, such as drum and flatbed technologies, are limited in flexibility and efficiency due to fixed speeds and mechanical linkages, which restrict the ability to produce different products and stages of the pouch creation process, leading to inefficiencies and difficulties in changing over to produce various film-wrapped pouch products.
Innovation Solution
A packaging machine with independently controllable movers that travel around a track, using magnetic fields from linear motors to propel platens through multiple stages at varying speeds, allowing for flexible speed adjustments and easy modification of processing stages without mechanical changes, enabling faster cycle times and greater product variety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If fixed-speed mechanical linkages are used in packaging machines, then mechanical stability is maintained, but flexibility and efficiency in producing different products deteriorate
Solution Approach 1:
The patent replaces traditional mechanical linkages with independently controllable movers that travel along a track system. Each mover is equipped with its own drive mechanism, eliminating the need for complex mechanical linkages that connect multiple processing stations. This substitution allows each mover to be controlled independently, providing flexibility in speed and positioning without the constraints of mechanical coupling.
Solution Approach 2:
The packaging machine is divided into multiple independent processing stages, with each stage capable of operating at different speeds. The track system is segmented into multiple zones, each controlled by independent drive mechanisms. This segmentation allows different portions of the production line to be optimized for different products or processes simultaneously.
2Productivity
If single-speed operation is used throughout the packaging machine, then mechanical simplicity is maintained, but productivity and cycle time efficiency deteriorate
Solution Approach 1:
The patent implements dynamic speed control for each mover along the track, allowing speed to vary continuously based on the specific requirements of different processing stages. Each mover can accelerate, decelerate, or pause independently as it passes through different stations, optimizing the cycle time for each operation while maintaining overall system coordination.
Solution Approach 2:
The system allows independent adjustment of speed parameters for each mover and each processing stage. Control systems can modify velocity, acceleration, and positioning parameters dynamically based on product type, production volume, and stage-specific requirements, enabling optimal productivity without mechanical complexity.
3Ease of manufacture
If fixed processing stages are used, then machine structure stability is maintained, but ease of modification for different products deteriorates
Solution Approach 1:
The processing stages are configured as dynamic, reconfigurable modules rather than fixed structures. The track system allows for easy addition, removal, or repositioning of processing stations along the production line. Movers can be programmed to follow different paths or pause at different stations depending on the product being manufactured, enabling rapid changeover between product types.
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 enhances flexibility and efficiency by allowing different stages of the pouch creation process to operate at optimized speeds, reducing cycle time and enabling easier product changes, thus improving the production of film-wrapped pouches with greater precision and variety.
Implementation Method 1
magnetic fields from linear motors to propel platens through multiple stages
Data Source
AI summary
A packaging machine is provided for producing single and multiple compartment film wrapped pouches. Multiple linear motors allow aspects of the forming, filling, cutting and discharging to run at different speeds. The pouches are formed, filled and discharged from platens that are secured to movers that proceed through the packaging process by following magnetic fields created by independently controlled linear motors. Overall, cycle time is decreased as a result of speeding up parts of the process, including the platen return process, possible because there is no mechanical connection and not a single conveyor moving the platens while the other parts of the process may be simultaneously slowed down or even temporarily stopped. Changeover of platens, to accommodate different products, such as single compartment pouch to multiple compartment pouches, is also simplified because platens are simply connected to the movers and are thus easily removed and replaced.