The traditional manual plugging method is inefficient and inconsistent, and it is difficult to meet the needs of large-scale, standardized modern production. For this reason, the automatic plugging machine for pipettes has become one of the important equipment for upgrading the production process of experimental consumables. In the fields of modern medical testing, biological experiments, chemical analysis, etc., pipettes, as one of the basic experimental consumables, undertake the key tasks of accurate liquid aspiration and liquid transfer. In order to improve the sealing and hygienic performance of pipettes, one end needs to be encapsulated with a plug before leaving the factory to prevent foreign matter from entering and contaminating the inside.

　　1. The importance of pipette plugging process

　　The plug of the pipette is usually a sterilized plastic plug or filter cotton core pressed into the tube body. On the one hand, it can be used as a gas filtration medium to prevent cross contamination; on the other hand, it plays a physical blocking role to ensure the cleanliness of the product before transportation and use. High-quality plug core assembly must meet the following requirements:

　　Accurate position: the plug core must be located at the specified depth to ensure smooth subsequent use;

　　Firm installation: avoid the plug core falling off and sliding during use;

　　No pollution, no damage: the entire process must be carried out in a clean environment to prevent particles and oil from entering the tube body.

　　In traditional manual operation, due to the small size and soft material of the plug core, problems such as uneven depth, skewness, crushing or missing installation often occur, which seriously affects product quality. The automatic pipette plug core machine can comprehensively improve production efficiency and assembly consistency through mechanization and automation.

　　2. Functions and composition of the automatic pipette plug core machine

　　The automatic pipette plug core machine is a high-precision equipment developed specifically for the pipette sealing process. It has multiple functions such as automatic feeding, precise positioning, plug core insertion, quality inspection and automatic unloading. It is mainly composed of the following modules:

　　Automatic feeding system: equipped with a vibration plate or feeding mechanism to automatically sort the pipette and plug core and feed them to the designated station in a directional manner.

　　Positioning and clamping system: Use pneumatic or electric clamps to fix the pipette to ensure stable position and vertical accuracy during the core insertion process.

　　Core insertion mechanism: The servo-controlled push rod or clamping claw smoothly sends the plug core into the tube mouth, and the depth can be accurately adjusted to prevent compression deformation.

　　Quality inspection system: Equipped with photoelectric or visual sensors, real-time detection of whether the core is successfully installed, whether the depth is qualified, and whether there is a missing or double core phenomenon.

　　Automatic unloading device: Qualified products are automatically discharged, and defective products are sorted and removed, which can be connected to packaging or subsequent processes.

　　Intelligent control platform: PLC+touch screen system is adopted, which is easy to operate and supports process parameter setting, output statistics, fault alarm and other functions.

　　III. Equipment advantages and technical features

　　Efficient and stable: The whole machine runs stably, and can complete hundreds of pipette core insertion operations per minute, significantly improving the efficiency of the production line.

　　High-precision core insertion control: The insertion depth error is controlled within ±0.1mm to ensure the excellent consistency of each pipette.

　　Compatible with multiple specifications of products: The equipment has a flexible structure and is suitable for various types of pipettes such as 1mL, 5mL, 10mL, 25mL, and plugs of different materials.

　　Low energy consumption and low noise: The whole machine adopts an energy-saving servo drive system, which runs quietly and is suitable for clean workshop working environment.

　　Reduce labor costs: Replace the traditional manual plugging process, one device can replace 3~5 operators, saving labor costs.

　　Strong scalability: It can form an automated production line with stretching machines, screen printing machines, packaging machines and other equipment to create a whole-line intelligent manufacturing system.

　　The promotion and application of automatic pipette plugging machines marks that the production of experimental consumables has entered a new era of higher efficiency, higher intelligence and higher standardization. It not only helps companies improve assembly efficiency and quality control level, but also helps them stand out in the fierce market competition.