Longitudinal Sealing Device with Coaxial Guide Elements
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Solution Overview
Problem
Existing longitudinal sealing devices for packaging machines have a large footprint and require separate components for sealing and transport, making them inefficient in terms of space usage and component count.
Innovation Solution
A compact sealing device design where the seal holders and packaging transport unit share a common installation space, with a contact conveying element guided by coaxial guide elements, allowing for simultaneous sealing and transport with reduced longitudinal extension and component count.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If separate components for sealing and transport are used, then the sealing function is reliable, but the device footprint is large and space efficiency is poor
Solution Approach 1:
The patent combines the sealing device and packaging transport unit into a single integrated assembly where the seal holders are mounted on the same mounting rod as the guide elements for the contact conveying element. This merging of previously separate components (sealing mechanism and transport mechanism) into one compact unit directly reduces the device footprint and eliminates redundant structural elements, thereby resolving the contradiction between compactness and functional completeness
Solution Approach 2:
The mounting rod serves multiple functions: it supports the seal holders for sealing operations and simultaneously supports the guide elements for the contact conveying element's transport function. The guide elements themselves serve dual purposes by guiding the conveying element while also providing structural support. This multi-functionality allows the device to perform both sealing and transport without requiring separate dedicated components, thus reducing overall complexity
2Stability of the object's composition
If additional holders are added for mounting components, then the structural stability is improved, but the device complexity and component count increase
Solution Approach 1:
The mounting rod is designed as a multi-functional support structure that simultaneously holds the seal holders and the guide elements, eliminating the need for separate mounting holders for each component. This universal support approach maintains structural stability while significantly reducing the total number of components required in the system
Solution Approach 2:
The patent merges the mounting functions for sealing components and transport components into a single integrated mounting rod structure. By combining these previously separate mounting functions into one unified structure, the patent reduces the number of additional holders needed while maintaining the structural stability required for both sealing and transport operations
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 design enables efficient sealing and transport within a smaller installation space, reducing the fall height of containers and eliminating the need for additional holders, resulting in a more compact and reliable sealing device with fewer components.
Implementation Method 1
The outer side comprises, for example, recesses for the packaging material to adhere to the outer side due to a negative pressure created in the recess
Implementation Method 2
the contact conveying element is arranged at least partially between the seal holders... for a frictional and/or force-locking connection with the packaging material
Data Source
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AI summary
The invention relates to a sealing device for a longitudinal sealing unit of a packaging machine, comprising at least one sealing jaw (16) and at least one further sealing jaw (20) for sealing a packaging material (50), with at least one sealing holder (14) for fixing the sealing jaw (16) and a further sealing holder (18) for fixing the further sealing jaw (20), wherein the sealing holder (14) and the further sealing holder (18) are movably mounted relative to each other, and with at least one packaging transport unit (48) for conveying a packaging material (50) along a transport direction (70) between the sealing jaws (16, 20), wherein the packaging transport unit (48) comprises at least one contact conveying element (62) for frictional and/or force-fit with the packaging material (50), wherein the contact conveying element (62) is arranged at least partially between the sealing holders (14, 18). is.It is proposed that the sealing device comprises a mounting rod on which the seal holder (14) and/or the further seal holder (18) are arranged, wherein the packaging transport unit (48) comprises a guide element (64) and a further guide element (66) for guiding the contact conveying element (62) along the transport direction (70), wherein a longitudinal axis of the mounting rod and a rotation axis of the guide element (64) or the further guide element (66) are arranged at least substantially coaxially.