Pick-up Device for Wide Format Web Loading
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Solution Overview
Problem
Manual loading of wide format webs into transport paths is difficult due to the increasing width of the media roll and the need to lift the web to a higher processing unit, often without support, making it cumbersome and challenging for operators.
Innovation Solution
A web handling apparatus with a pick-up device featuring a pivotable lever and suction mechanism that allows the operator to easily attach and move the leading edge of the web to a pick-up surface, which is then moved to the processing unit, reducing the need for the operator to lift the web manually and providing support along the transport path.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If the media roll width increases, then the web width increases, but the manual loading difficulty increases
Solution Approach 1:
A pick-up device with a pick-up surface acts as an intermediary between the supply unit and the processing unit. The device includes a holding mechanism that securely grasps the leading edge section of the web, allowing the operator to manipulate a compact device rather than the entire wide web. The pick-up surface moves the held web section from the supply unit to the processing unit, effectively mediating the transfer and reducing loading difficulty despite increased web width.
2Adaptability or versatility
If the transport path extends upwards to a higher processing unit, then the processing capability is improved, but the manual loading effort increases
Solution Approach 1:
The pick-up device serves as a mechanical intermediary that bridges the vertical gap between the supply unit and the elevated processing unit. The holding mechanism secures the leading edge section, and the pick-up surface performs the lifting action, transferring the web section vertically to the processing unit's level. This mediates the force requirement by concentrating lifting effort on a small held section rather than the entire wide web.
Solution Approach 2:
The web handling process is segmented into distinct phases: the holding mechanism grasps only the leading edge section of the web, separating this critical portion from the rest of the wide web. This segmentation allows the operator to manipulate and lift only the necessary portion (the leading edge section) to the processing unit, significantly reducing the lifting effort compared to moving the entire wide web at once.
3Device complexity
If the operator manually loads the web without support, then the device complexity is reduced, but the loading precision deteriorates
Solution Approach 1:
The pick-up device with its pick-up surface acts as a minimal support intermediary that provides precise positioning control during loading. The holding mechanism securely grasps the leading edge section, and the pick-up surface moves it along the transport path with controlled precision. This simple intermediary structure enables accurate web placement without requiring complex loading support systems.
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
Facilitates easy manual loading of wide format webs by reducing the effort required to position the web at the processing unit, ensuring consistent tension and preventing operator exposure to harmful radiation during the loading process.
Implementation Method 1
a pick-up device (30) comprising a pick-up surface (32) and a suction mechanism configured for attracting a leading edge section (L) of the web (W) onto the pick-up surface (32)
Data Source
Figure 1A~1B
Figure 2A~2C
Figure 2D~2E
AI summary
In wide format web printing the loading of a new web medium is a cumbersome process, requiring the operator to raise a very wide flexible web from the supply roll up to the print surface. The present invention provides a simple apparatus to aid in the manual loading process. The web transport assembly of the apparatus comprises a supply unit arranged for supplying the web from a media roll to a transport path and a pick-up device comprising a pick-up surface and a holding mechanism configured for releasably holding a leading edge section of the web onto the pick-up surface, wherein the pick-up device is moveable between a first position near the supply unit for attaching the leading edge section and a second position near the print surface. The leading edge section is moved upwards towards the print surface while held by the holding mechanism.