Pivotable Guide Unit for Label Printer Roll Insertion
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Solution Overview
Problem
The change of label rolls in existing label printers is cumbersome and time-consuming due to insufficient spacing between the printhead, counter-element, and carrier tape drawing and pressure rollers, requiring laborious threading of the new roll.
Innovation Solution
A guide unit with a pivotable design that increases spacing between the printhead, counter-element, and carrier tape drawing and pressure rollers, allowing for easy insertion of new rolls by pivoting the counter-element and pressure rollers away from the printhead and drawing roller, respectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the spacing between printhead and counter-element, and between carrier tape drawing roller and pressure roller is reduced to improve compactness, then the device becomes more compact, but the ease of inserting new label rolls deteriorates
Solution Approach 1:
The guide unit is designed to be pivotable between a first position (for operation) and a second position (for insertion). This dynamic reconfiguration allows the spacing between components to change: in the second position, the guide unit pivots to increase spacing between the counter-element and printhead, and between the pressure roller and drawing roller, enabling easy insertion of new label rolls. In the first position, the components are closer for compact operation.
2Device complexity
If the guide unit is made stationary to improve structural simplicity, then the device complexity is reduced, but the productivity during label roll changes deteriorates
Solution Approach 1:
The guide unit incorporates a pivotable mechanism that allows quick transition between operational and insertion positions. This dynamic design enables rapid label roll changes by allowing the operator to pivot the guide unit to create necessary spacing, insert the new roll, and then pivot back to operational position, significantly reducing downtime compared to a stationary design.
3Ease of operation
If the counter-element and pressure roller are separated into different units to improve ease of insertion, then the ease of inserting new rolls is improved, but the device complexity increases
Solution Approach 1:
The guide unit merges the counter-element and pressure roller into a single pivotable assembly. This unified structure allows both components to be repositioned simultaneously through a single pivot action, creating the necessary spacing for easy insertion of new carrier tapes while avoiding the complexity of managing separate adjustable units.
Data Source
AI summary
Disclosed is a label printer having a driven carrier tape drawing roller; and a guide unit for the carrier tape, said guide unit being pivotably supported about a pivot axle between an operating position and an insertion position for the carrier tape, wherein the guide unit includes a counter-element to the printhead, configured to hold the carrier tape with the labels in contact with the printhead in the operating position; wherein, in the operating position, the carrier tape is led between the printhead and the counter-element and between the carrier tape drawing roller and the respective carrier tape pressure roller and can in particular be transported along a predefined carrier tape transport path; and wherein, in the insertion position of the guide unit, the counter-element is pivoted away from the printhead and the respective carrier tape pressure roller is pivoted away from the carrier tape drawing roller.