Longitudinal Sealing Device with Transport Synchronization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing packaging devices for tubular bag production are not designed for continuous operation, leading to reduced processing speed and potential damage to packaging materials due to relative movements between sealing jaws and the material.
Innovation Solution
Incorporating a drive system that moves the longitudinal sealing device along the transport direction of the packaging material, using dual sealing elements for both top and zip closures, and allowing the transverse sealing unit to move at a higher speed to prevent creases, while enabling adjustable heating and force settings for sealing elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a stationary sealing device is used for tubular bag production, then the device structure is simple, but the processing speed is reduced and continuous operation is not possible
Solution Approach 1:
The sealing device is transformed from a stationary structure to a dynamic one by introducing a drive system that moves the sealing unit along the transport direction of the packaging material. This allows the sealing device to continuously follow the moving material, enabling continuous operation and increased processing speed while maintaining sealing quality.
2Reliability
If sealing jaws remain stationary relative to packaging material, then the device structure is simple, but relative movements cause damage to packaging
Solution Approach 1:
The sealing jaws are equipped with a drive system that synchronizes their movement with the transport speed of the packaging material. This eliminates relative movement between the sealing jaws and the material during the sealing process, preventing packaging damage while maintaining a relatively simple sealing mechanism.
3Adaptability or versatility
If multiple separate sealing devices are used for top seam and closure sealing, then each function can be optimized, but the device becomes more complex and space-consuming
Solution Approach 1:
The sealing jaws are designed to integrate multiple sealing functions within a single unit. The first and second sealing elements can simultaneously or sequentially create the top seam and seal the closure, combining what would traditionally require separate devices into one integrated system, reducing complexity and space requirements.
Solution Approach 2:
The sealing jaw structure is designed as a universal component that can perform multiple sealing tasks. By incorporating adjustable sealing elements and a synchronized drive system, the same sealing jaw can create top seams, seal closures, and adapt to different packaging requirements, eliminating the need for multiple specialized devices.
4Manufacturing precision
If transverse sealing unit moves at the same speed as packaging material, then the transport is simple, but creases form in the packaging material
Solution Approach 1:
The transverse sealing unit is equipped with an independent drive system that allows its speed to be adjusted relative to the packaging material transport speed. By moving the sealing unit at a slightly higher speed, the system creates a stretching effect that prevents crease formation, improving bag quality while requiring a relatively simple speed control mechanism.
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
Enables continuous operation, increases processing speed, reduces damage to packaging, and improves bag quality by allowing for flexible adjustment and higher quality seals, with reduced changeover times and space-efficient integration of components.
Implementation Method 1
the longitudinal sealing device comprises heating elements and/or temperature sensors
Implementation Method 2
at least one drive which moves the longitudinal sealing device along the transport direction of the packaging material during the sealing process
Implementation Method 3
Vertically arranged sealing jaws apply heat and pressure to the packaging to be sealed during the feed
Implementation Method 4
apply heat and pressure to the packaging to be sealed
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A device for sealing a package or packaging material is proposed, comprising at least one format set (5) for forming a packaging material (1) into a tube, comprising at least one take-up process (6) that moves the packaging material (1) in a transport direction, with at least one longitudinal sealing device (7) for creating at least one longitudinal seam, wherein the longitudinal sealing device (7) comprises at least two sealing jaws (17, 18) that can be moved relative to each other, with at least one transverse sealing unit (8) for creating at least one transverse seam, characterized in that a drive (26) is provided which moves the longitudinal sealing device (7) during the sealing process of the longitudinal seam along the transport direction of the packaging material (1).