(1) Labeling Working Principle
This hot melt adhesive OPP labeling machine is a linear single-head labeling machine. The working process is as follows:
- Bottles conveyed by the conveyor belt are transferred to the bottle mold by the star wheel bottle feeding mechanism. After the bottle is fixed by the bottle pressing mechanism and the bottle mold base, the bottle mold starts to rotate at a certain speed.
- During the rotation of the product, pre-positioning is carried out by the servo motor, and labeling is performed according to the trajectory.
- When the bottle reaches the mold, the computer host controls the label feeding system to feed the label. After one label feeding action is completed, the high-speed cutter cuts off one label. The adoption of the American Honeywell low-inertia high-speed servo motor ensures the accuracy and stability of high-speed label feeding and cutting.
- The cut label is sent to the gluing system. In this part, the system applies glue to the two ends (head and tail edges) of the label. This gluing method minimizes the consumption of hot melt adhesive.
- When the glued label is rotated to the labeling position, it can be accurately and effectively adhered to the bottle body. Since the bottle is in a rotating state during the label conveying process, the label can be smoothly and tightly attached to the container. The glue strip at the glue application end forms a good label lap seal, thus completing a labeling cycle.
(2) Equipment Composition
A. Main Machine
- Delta Servo System (Taiwan, China)
- Delta Drive System (Taiwan, China)
- Schneider 7-inch color screen HMI (Human-Machine Interface, Germany)
- Panasonic High-speed High-resolution Color Mark Label Sensor (Japan)
- Panasonic High-speed High-resolution Detection Sensor (Japan)
- Panasonic Product Detection Photoelectric Switch (Japan)
- Panasonic Pressure Sensor (Japan)
B. Mechanical Part
- Conveyor Belt: Industrial plastic conveyor belt
- Main Motor: 1500W original Yutian AC motor (equipped with original Yutian reducer)
- Positioning Mechanism: Servo automatic positioning labeling
- Labeling Mechanism: Servo motor drives the bottle for labeling during rotation
- Label Feeding Mechanism: High-speed servo OPP label film feeding system (driven by high-speed servo motor)
- Label Pressing Mechanism: Brush/sponge assembly
- Glue Supply System: Specialized glue supply system for hot melt adhesive
2. Equipment Safety Protection Section
- Label Lack Alarm: Triggers an alarm when the label is about to run out to remind the operator to prepare for label replacement.
- Missing Labeling Alarm: Facilitates the control of labeling quality.
- Air Pressure Detection: Stops the equipment for protection when the air pressure fails to meet the equipment production requirements, preventing the generation of defective products.
- Temperature Detection: Stops the equipment for protection when the temperature of the hot melt adhesive fails to meet the equipment production requirements, preventing the generation of defective products.