Rotary Wax Transfer Labeling for Cylindrical Containers
Solution Overview
Problem
Existing label applicator machines for circular cross-section bottles are complex and large, requiring inflation and indexing, which complicates the application process and increases size, while existing wax transfer labels do not efficiently accommodate varying bottle dimensions and speeds.
Innovation Solution
A high-speed label applicator system with a silicone rubber roller applicator head that pre-heats and applies labels to cylindrical containers using servo motors for precise positioning and synchronization with bottle surface speed, allowing for continuous decoration without indexing, and adjustable web speed to match bottle movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional label applicator machines use inflation and indexing mechanisms to apply labels to circular cross-section bottles, then label application accuracy is improved, but device complexity and machine size increase
Solution Approach 1:
The patent removes the inflation mechanism and indexing system from the label applicator, extracting only the essential function of label transfer. The simplified machine uses a rotary dial table that continuously rotates bottles through the labeling station without stopping or inflating them, eliminating complex subsystems while maintaining labeling functionality.
Solution Approach 2:
Instead of stopping and indexing each bottle for label application, the system inverts the approach by continuously rotating bottles through the labeling zone. The label web is fed at a controlled speed to match bottle surface speed, allowing labeling to occur during continuous motion rather than during indexed stops.
2Productivity
If label applicator machines are designed for high throughput with increased automation, then productivity is improved, but device complexity and overall size increase
Solution Approach 1:
The system maintains continuous rotation of bottles through the labeling station without indexed stops. The label web is continuously fed and applied to bottles as they pass through the labeling zone, eliminating idle time between labeling operations and maintaining constant productive action.
Solution Approach 2:
The label web feed speed is dynamically adjusted to match the surface speed of rotating bottles, allowing the system to accommodate varying bottle dimensions and rotation speeds. This dynamic speed matching enables high throughput while maintaining precise label placement.
3Manufacturing precision
If the label web speed is synchronized to bottle surface speed during application, then label placement precision is improved, but control system complexity increases
Solution Approach 1:
The system uses feedback from sensors that detect bottle position and rotation speed to continuously adjust the label web feed rate. This closed-loop control ensures the label web speed matches the bottle surface speed, maintaining precise label placement even as bottle dimensions vary.
Solution Approach 2:
The label applicator is designed to handle multiple bottle sizes and shapes using the same basic mechanism. The universal design uses adjustable label web speed and positioning to accommodate different bottle dimensions without requiring specialized tooling or complex reconfiguration.
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
Enables efficient, accurate, and flexible label application to varying bottle sizes and shapes on the fly, reducing machine complexity and size, and allowing for faster production rates with adjustable parameters and minimal tooling changes.
Implementation Method 1
The head applies a graphic label by application of heat and pressure to the cylindrical container face. The labels are released from a paper carrier by pre-heating the web as it approaches the applicator head. The applicator head consists of a silicone rubber roller heated to a temperature that will release the label from the carrier.
Implementation Method 2
The head applies a graphic label by application of heat and pressure to the cylindrical container face.
Data Source
AI summary
A label applicator system transfers labels from a web to items moving on a rotary item transport. The applicator system includes a supply for supplying the web with the labels thereon and a take-up for taking up the web after transfer of the label from the web to the item. The supply and take-up are vertically oriented. The applicator includes a movable label applicator head. A rotary table moves the items along a path defined by rotation of the table and rotates the items relative to an axis of the items. The label applicator head is movable toward and away from the item and the item is rotated to apply the label to the item as it moves passed the applicator head.