Tension Roller Control for Label Positioning Accuracy
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional labelers face issues with inaccurate and reproducible label positioning at high speeds, increased noise, and inflexibility due to the use of pneumatically driven tension rollers with manual stop adjustments, which are costly and require multiple rollers for each row of labels.
Innovation Solution
A method utilizing a single tension roller driven by a stepper motor control mechanism, allowing precise and reproducible partial advances by dividing the path into individual driving steps, eliminating the need for multiple pneumatic rollers and enhancing accuracy and flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If pneumatic tension rollers with manual stop adjustments are used, then the labeler can operate at high speeds, but the label positioning accuracy deteriorates and reproducibility suffers
Solution Approach 1:
The patent replaces the pneumatic system with a motor-driven system (stepper motor or servo motor) that mechanically controls the tension roller position. This substitution enables precise control of the partial advance distance through electronic positioning rather than pneumatic pressure, thereby maintaining high operating speeds while achieving accurate and reproducible label positioning.
Solution Approach 2:
The patent changes the control parameter from pneumatic pressure to motor position control. By using a motor-driven tension roller with programmable positioning, the system can precisely control the distance the tension roller travels during partial advances, ensuring consistent label placement accuracy regardless of operating speed variations.
2Productivity
If multiple pneumatic tension rollers are used for each row of labels, then partial advances can be achieved for each row, but the device complexity and construction expense increase
Solution Approach 1:
The patent makes a single tension roller universal by enabling it to perform multiple partial advances for different rows of labels. Through programmable control, the same tension roller can be positioned at different distances to accommodate varying numbers of rows per set, eliminating the need for multiple dedicated rollers and reducing system complexity.
Solution Approach 2:
The patent introduces dynamic control of the tension roller through motor-driven positioning. Instead of having fixed, static rollers for each row, the system uses a single dynamically controllable roller that can adjust its travel distance programmatically, allowing flexible adaptation to different labeling configurations without adding mechanical complexity.
3Extent of automation
If pneumatic cylinders are used for moving the tension roller, then the system can operate automatically, but noise increases and running times fluctuate due to temperature and pressure effects
Solution Approach 1:
The patent substitutes the pneumatic system with an electric motor system, eliminating the harmful effects associated with pneumatic operation. Motor-driven tension rollers produce less noise and are not susceptible to temperature and pressure fluctuations that cause running time variations, while maintaining full automation through electronic control.
Data Source
AI summary
A method for applying labels in rows on a tape, which can be driven by a tape driving mechanism, for which the labels are deposited in consecutive rows at an applicator, disposed stationary at the tape, on the tape, the tape being advanced partially after or during the deposition of a row of labels by a length section at the applicator in that, by a movable tension, a pull loop is pulled out of the path of the tape downstream from the applicator, while the section of tape, located upstream from the pull loop, is kept stationary, and the tension can be moved stepwise between a starting position and an end position and that, during the partial advance, a step is traveled by the tension roller, the length of which is adjusted by a control mechanism.