In the packaging industry, tabletop round bottle sticker labeling machines play a crucial role in efficiently applying labels to round bottles. These machines are widely used in various sectors such as food and beverage, cosmetics, and pharmaceuticals. To fully appreciate their functionality, it is essential to understand their working principles.
Table of Contents
1. Label Supply System
Label Roll Mounting
The process begins with the label roll. The label roll, which consists of multiple labels attached to a backing paper, is mounted on a spindle within the machine. This spindle is designed to hold the roll securely and allow it to rotate freely as the labels are dispensed.
Unwinding Mechanism
An unwinding mechanism is responsible for gradually releasing the labels from the roll. This mechanism is often controlled by a motor or a set of gears that ensure a steady and consistent unwinding speed. As the labels unwind, they move towards the next stage of the labeling process.
2. Label Detection
Sensor Technology
Once the labels start to unwind, a label sensor comes into play. This sensor is typically an optical or mechanical device that can detect the leading edge of each label. The sensor sends a signal to the machine’s control system, indicating the exact position of the label. This information is crucial for accurate label dispensing and application.
Precise Positioning
Based on the signal from the sensor, the machine can precisely position the label for the subsequent steps. This ensures that each label is dispensed at the correct time and in the right orientation, minimizing the chances of misaligned or overlapping labels.
3. Bottle Feeding
Manual or Automated Feeding
There are two main ways to feed round bottles into the labeling machine: manually or automatically. In manual feeding, operators place the bottles one by one on a designated platform or conveyor. This method is suitable for small – scale production or when dealing with irregularly shaped bottles.
On the other hand, automated feeding systems use conveyors or other mechanical devices to transport the bottles to the labeling area. These systems are more efficient and are commonly used in large – scale production environments. They can continuously supply bottles to the machine at a consistent rate, increasing the overall productivity of the labeling process.
Bottle Positioning
Once the bottles are in the labeling area, they need to be properly positioned. The machine may use guides, stops, or other positioning mechanisms to ensure that each bottle is in the correct location for label application. This is important because accurate bottle positioning is essential for achieving precise label placement on the round surface of the bottle.
4. Label Dispensing
Peeling Process
After the label is detected and the bottle is in position, the label needs to be separated from the backing paper. This is achieved through a peeling mechanism. The backing paper is guided around a sharp edge or a roller, causing the label to peel off due to the difference in the radius of curvature. As the label peels off, it is ready to be applied to the bottle.
Dispensing Speed
The speed at which the label is dispensed is carefully controlled by the machine’s control system. The dispensing speed is coordinated with the movement of the bottle and the label application process to ensure that the label is applied smoothly and accurately.
5. Label Application
Pressure – Sensitive Application
Most tabletop round bottle sticker labeling machines use pressure – sensitive technology for label application. Once the label is peeled off the backing paper, it is pressed onto the surface of the round bottle. This can be done using a variety of methods, such as a roller or a pad.
The roller or pad applies a specific amount of pressure to the label, ensuring that it adheres firmly to the bottle. The pressure is evenly distributed across the label to prevent wrinkles or bubbles from forming.
Rotation of the Bottle
To ensure that the label is applied evenly around the circumference of the round bottle, the bottle may be rotated during the labeling process. This rotation can be achieved using a motor – driven turntable or a set of rollers that grip the bottle and spin it. As the bottle rotates, the label is gradually wrapped around its surface, creating a seamless and professional – looking label application.
6. Machine Control System
Programmable Logic Controller (PLC)
The entire operation of the tabletop round bottle sticker labeling machine is controlled by a programmable logic controller (PLC). The PLC is a computer – based system that can be programmed to control various aspects of the machine, such as the speed of the label unwinding, the timing of the label dispensing, and the movement of the bottle.
User Interface
The machine is also equipped with a user interface, which allows operators to input specific parameters and settings. Through the user interface, operators can adjust the labeling speed, the label position, and other important variables according to the requirements of the specific labeling task.
In conclusion, tabletop round bottle sticker labeling machines are complex yet highly efficient devices. By understanding their working principles, businesses can better utilize these machines to improve the quality and productivity of their labeling processes. Whether it’s for small – scale artisanal products or large – scale industrial production, these machines offer a reliable and cost – effective solution for applying labels to round bottles.
