Bag Conveyance Control for Liquid Stability
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Solution Overview
Problem
In bag processing systems, high-speed bag transfer leads to violent shaking of liquids inside bags, causing adherence to the sealing area or splashing out, resulting in sealing defects and contamination, especially when acceleration/deceleration speeds increase, affecting productivity and process efficiency.
Innovation Solution
A bag processing system with a conveyance mechanism that includes support devices and a conveyance control device to maintain synchronized acceleration-deceleration of support devices, utilizing a non-straight path and sway suppression guides to reduce liquid shaking, ensuring the liquid remains stable within the bag during conveyance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high-speed bag transfer is implemented to improve productivity, then productivity increases, but liquid shaking becomes more violent causing sealing defects and contamination
Solution Approach 1:
The conveyance control device applies preliminary anti-action by controlling the conveyance drive device to reduce acceleration and deceleration speeds specifically when bags are in the liquid introduction station, preventing liquid shaking before it can cause sealing defects or contamination while maintaining high-speed transfer elsewhere in the system
2Productivity
If acceleration/deceleration speed of bag transfer is increased to improve productivity, then productivity increases, but inertial force on liquid increases causing violent shaking
Solution Approach 1:
The system applies dynamics by making the acceleration and deceleration speeds variable rather than constant. The conveyance control device dynamically adjusts these parameters based on the bag's position in the conveyance path, reducing them during liquid introduction to minimize inertial forces while maintaining high overall transfer speeds for productivity
3Productivity
If liquid shakes violently during bag conveyance, then productivity may be maintained, but liquid adheres to sealing area or splashes out causing defects and contamination
Solution Approach 1:
The conveyance control device acts as an intermediary between the conveyance drive device and the bags. It mediates the transfer process by controlling acceleration and deceleration speeds to prevent liquid shaking that would cause adhesion to sealing areas or splashing outside the bags, thereby eliminating harmful effects while maintaining productivity
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 effectively suppresses liquid shaking, preventing adherence to the sealing area and splashing, thereby improving the sealing process quality and reducing contamination risks, enhancing productivity by maintaining liquid stability during high-speed bag transfer.
Implementation Method 1
when the acceleration/deceleration speed of bag transfer increases, a larger inertial force acts on a liquid inside a bag, so that the liquid tends to shake more violently
Implementation Method 2
a sway suppression guide which suppresses sway due to centrifugal force of the bags supported by the plurality of support devices
Data Source
AI summary
A bag processing system includes: a conveyance mechanism which includes: a plurality of support devices being able to support and release bags; and a conveyance drive device moving the plurality of support devices intermittently; a liquid introduction device which introduces a liquid into the bags supported by the plurality of support devices; and a conveyance control device which controls the conveyance drive device, wherein: the conveyance drive device moves the plurality of support devices in such a manner that the plurality of support devices exhibit same acceleration-deceleration behavior between each other, and the conveyance control device controls the conveyance drive device to accelerate or decelerate the plurality of support devices in such a manner that shaking of the liquid in the bags is reduced.