Bag Packaging Line With Integrated Label Printing and Tension Control
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Solution Overview
Problem
Existing packaging apparatuses require large air compressors due to excessive air supply, have complex structures, slow packaging speeds, lack tension control, cause bag deformation during sealing, and necessitate separate label printing and attachment processes.
Innovation Solution
A compact packaging apparatus with a dancer roller for tension control, a simplified air supply system using one nozzle, integrated label printing, and a streamlined opening and sealing mechanism to enhance packaging speed and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If air is supplied through three nozzles to open the bag top and four grippers are used to grip four corners, then the bag opening function is achieved, but the compressor capacity must be large and the machine volume increases
Solution Approach 1:
The bag opening function is divided into two independent stages: first, a single nozzle opens the bag top using compressed air; second, two grippers grip the opened bag corners. This segmentation allows each component to be minimized in size while maintaining overall functionality, eliminating the need for three nozzles and four grippers
Solution Approach 2:
The essential function of bag opening is extracted and performed by a single nozzle providing compressed air, rather than using multiple nozzles. The gripping function is similarly extracted to only two grippers, removing unnecessary components and reducing the required compressor capacity and machine volume
2Reliability
If four grippers are operated through an actuator to open and maintain bag shape, then the bag can be properly opened, but the structure becomes very complicated and packaging time increases
Solution Approach 1:
The bag handling process is segmented into distinct functional stages: opening by air pressure, then gripping by two simple grippers. Each stage uses the minimum necessary components, avoiding the complex four-gripper system with multiple actuators and linkages, thereby simplifying the overall structure while maintaining reliability
Solution Approach 2:
The mechanical system of four grippers operated by actuators through linkages is replaced with a simpler combination of compressed air for opening and two directly actuated grippers for holding. This substitution eliminates complex mechanical transmissions and reduces structural complexity
3Reliability
If the first link, second link, and fingers are rotated repeatedly to open and return the bag, then the bag opening function is performed, but the configuration becomes very complicated and packaging speed decreases
Solution Approach 1:
The bag opening operation is segmented into a quick air-blowing phase followed by a simple gripping phase. The complex multi-link rotation mechanism is replaced by a single-action nozzle followed by simple gripper movement, reducing the number of repetitive mechanical cycles and increasing packaging speed
Solution Approach 2:
The bag opening uses periodic compressed air pulses from the nozzle to quickly open the bag, followed by immediate gripping. This periodic air action replaces the slow, repetitive mechanical rotation of multiple links, significantly reducing the time required for each packaging cycle
4Reliability
If the heating element position is fixed and bags are moved adjacent to it, then sealing function is achieved, but heat is applied to parts other than the sealing portion causing bag deformation
Solution Approach 1:
The heating element is designed with localized heating zones that correspond precisely to the sealing portion of the bag. The heating structure provides different thermal characteristics at different locations, concentrating heat only where sealing is needed and avoiding heat application to non-sealing areas, thus preventing bag deformation while maintaining sealing reliability
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 apparatus achieves rapid, accurate packaging with reduced compressor size, maintains bag tension, prevents PC malfunctions, and integrates label printing, resulting in a simple, efficient packaging process.
Implementation Method 1
a dancer roller to maintain tension of a bag that is conveyed at a predetermined level
Implementation Method 2
the sealing unit for sealing after a product is put into a bag has a heating element and a seal backing bar
Implementation Method 3
supply air, which is supplied from an air compressor, through three nozzles to open the top of a bag
Data Source
Figure 1A
Figure 1B
Figure 2
AI summary
The present disclosure a packaging apparatus for packaging bags equipped with a label printer, the packaging apparatus having a remarkably high packaging speed in comparison to packaging apparatuses of the related art. The packaging apparatus of the present disclosure includes a frame equipped with components for operating and controlling the apparatus therein, a bag feeding unit automatically conveying and feeding half-cut and wound bags, a label attaching unit installed on the frame and printing and attaching a label to the bags that are conveyed, and an opening and sealing unit opening tops of the bags, putting a product into the bags, and then packing the bags through sealing.