Handheld Labeler Pivoting Pressure Roll for Web Threading
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Solution Overview
Problem
Existing hand-held portable labelers face difficulties in efficient loading and threading of label rolls, leading to unreliable peeling of labels and user inconvenience.
Innovation Solution
A hand-held portable labeler design featuring a pivotally mounted holder and pressure roll system that allows for easy threading and tensioning of the label web, with a delaminator and applicator configuration ensuring reliable label peeling and application, and a method for loading the labeler that includes positioning the label roll between the print head and pressure roll for taut web alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the labeler uses a fixed configuration where the platen roll and pressure roll are always in contact, then label peeling is reliable, but the carrier web cannot be threaded and the device cannot be loaded
Solution Approach 1:
The holder is made pivotally mounted to the housing about a pivot axis, allowing it to move between an operating position where the pressure roll contacts the platen roll for reliable label peeling, and a non-operating position where the rolls are spaced apart to allow carrier web threading. This dynamic reconfiguration resolves the contradiction between threading accessibility and peeling reliability.
2Productivity
If the holder is always in the operating position, then label application is consistent, but the carrier web cannot be loaded into the labeler
Solution Approach 1:
The pivotally mounted holder can be positioned in a non-operating state during loading, allowing the carrier web to be threaded through the spaced-apart rolls, then pivoted to the operating position for consistent label application. This enables both easy loading and consistent operation.
3Ease of operation
If the platen roll and pressure roll are spaced apart for loading, then the carrier web can be threaded, but the web may become loose and peeling may be unreliable
Solution Approach 1:
The system transitions from a spaced-apart configuration during loading to a contacting configuration during operation, where the pressure roll contacts the platen roll to create the necessary web tension and reliable peeling conditions. The pivotal holder enables this transition.
4Volume of moving object
If the labeler is designed with a compact structure, then it is portable, but the carrier web threading space may be insufficient
Solution Approach 1:
The pivotally mounted holder creates a variable internal configuration: when spaced apart during loading, it provides sufficient threading space despite the compact overall structure; when in the operating position, it maintains the compact form factor while ensuring proper web tension for reliable operation.
Data Source
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AI summary
There is disclosed a hand-held portable labeler and labeling method that enables the label web supply to be quickly threaded into the labeler. The path of the carrier web (W) for the labels (L) from the nip of the print head (25) and platen roll (26), about the delaminator (28), into the nip between the platen roll and a pressure roll (29,51), and out of the labeler is short and the pressure roll is widely separable from the platen roll to facilitate threading.