The Working Principle of a Labeling Machine

The working principle of a labeling machine is based on the coordination of various internal components to achieve automatic and accurate label application onto products. Here is a detailed explanation of the working principle in English:

1. Label Supply: The labeling machine is equipped with a label roll, and the labels on the roll are accurately guided to the peeling plate through a series of guiding devices. These guiding devices ensure that the labels remain flat and stable during the transfer process.

2. Label Peeling: As the labels are transported near the peeling plate, the plate separates the label from the backing paper (or liner). The peeling plate is typically designed with an angled surface, and when the label passes over it, due to the stiffness of the label material, the front end of the label is forced to detach from the backing paper, ready for application.

3. Product Detection and Positioning: The labeling machine utilizes sensors to detect the arrival and position of the product. When the sensor detects a product, it sends a signal to the control system, which adjusts the labeling machine's actions based on preset parameters. At the same time, positioning mechanisms ensure that the product is accurately positioned under the label for application.

4. Label Application: Once the product is positioned under the label, the labeling machine applies the label onto the product using a label applicator roller or pressure device. The applicator roller or pressure device exerts a certain amount of pressure and speed to ensure that the label adheres securely to the product.

5. Conveyance and Collection: After label application, the product continues to move forward on the conveyor belt, while the peeled-off backing paper is collected through a separate conveyor system. This maintains a clean work environment and facilitates subsequent processing.

6. Control System: The entire labeling process is coordinated and controlled by a control system. The control system adjusts the label supply speed, peeling position, application position, and other parameters based on preset values to accommodate different products and label requirements. Additionally, the control system monitors the labeling machine's operating status in real-time and generates alarms when faults occur.

In summary, the working principle of a labeling machine relies on the cooperation of various internal components to achieve automatic and accurate label application onto products. This automated production method significantly improves production efficiency, reduces labor costs, and ensures consistent product quality.