Linear-Motor Bag Transfer for Filling-Sealing Time Mismatch
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Solution Overview
Problem
Existing bagging and packaging machines face challenges in efficiently producing bagged products while simplifying and miniaturizing the device, as they either require complex following mechanisms or increased costs due to multiple processing devices, especially when using continuous transfer methods.
Innovation Solution
A bag processor utilizing a linear motor drive to adjust transfer speeds and synchronize processing times across different bag processing devices, allowing for efficient production by controlling the transfer state of grippers and optimizing device placement on a racetrack-shaped transfer route.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple bag processing devices are arranged on the transfer route to execute processing simultaneously, then productivity is improved, but device complexity increases
Solution Approach 1:
The patent applies dynamics by enabling the holding members to vary their transfer speed dynamically during the transfer route. Different transfer speeds are used in different sections to synchronize with the processing times of individual bag processing devices, allowing multiple devices to operate simultaneously without requiring complex synchronization mechanisms.
Solution Approach 2:
The patent changes the transfer speed parameter of the holding members based on their position and the processing requirements of different bag processing devices. This parameter adjustment allows the system to accommodate multiple processing devices with different processing times, improving productivity while maintaining manageable device complexity.
2Productivity
If the transfer speed is increased to enhance production capacity, then productivity is improved, but the synchronization with processing times of individual devices becomes difficult
Solution Approach 1:
The system dynamically adjusts transfer speeds of holding members to match the processing times of individual bag processing devices. This dynamic speed adjustment eliminates the need for complex following mechanisms while maintaining synchronization, as each holding member can be independently controlled to arrive at processing stations at the appropriate time.
Solution Approach 2:
The transfer route is segmented into different sections with different transfer speeds. Each section is optimized for the specific processing requirements of the devices in that area, allowing high-speed transfer in some sections and slower, synchronized transfer in others, thereby reducing overall system complexity.
3Device complexity
If the number of holding members is reduced to simplify the device structure, then device complexity is reduced, but the production capacity may be compromised
Solution Approach 1:
By implementing dynamic speed control, the patent allows fewer holding members to achieve the same production capacity that would otherwise require more holding members operating at constant speeds. The dynamic adjustment enables each holding member to be more efficient in utilizing processing devices, reducing the total number needed.
Solution Approach 2:
The system maintains continuous useful action by ensuring that holding members are always engaged in either transfer or processing activities. The optimized speed control minimizes idle time and ensures that each holding member contributes maximally to production, allowing fewer members to maintain high production capacity.
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
The solution enables efficient production of bagged products by simplifying and miniaturizing the device, reducing the number of processing devices, and optimizing transfer speeds, thereby enhancing production capacity and reducing complexity and costs.
Implementation Method 1
a plurality of electromagnets aligned along the transfer route is provided on the rail member, a permanent magnet is provided on the holding member, each holding member is transferred by linear motor drive
Data Source
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AI summary
A transfer device (11) of a bag processor (10) includes a rail member (12) which defines a transfer route and a plurality of gripper pairs (14), and the gripper pair (14) is transferred by linear motor drive. A unit processing time per filling processing of a liquid filling device (25) on the transfer route is different from a unit processing time per sealing processing of a first bag mouth sealing device (26) on the downstream side, and the number of processed bags per processing of the liquid filling device (25) is different from the number of processed bags per processing of the first bag mouth sealing device (26). The number of bags on which the processing is executed by the first bag mouth sealing device (26) during the unit processing time of the liquid filling device (25) becomes the same as the number of the processed bags per processing of the liquid filling device (25). Bags on which the filling processing has been executed by the liquid filling device (25) are stocked on the upstream side of the first bag mouth sealing device (26) while the first bag mouth sealing device (26) executes sealing processing.