casing. When the rotors rotate, a series of closed small chambers are formed between the blades and the pump casing. These chambers suck in the material at the inlet. As the rotors rotate, the chambers move the material to the ouWorking Principle
Material Conveying Process: When the servo - rotor - pump bag - feeding packaging machine is in operation, the material first enters the servo - rotor - pump. Inside the rotor pump, there is a pair of synchronously rotating rotors. They rotate within the pumptlet and extrude it, thus achieving stable and continuous material conveyance. This conveying method works well for some fluid materials with high viscosity or containing particles, such as jam with fruit pulp.
Bag - feeding and Bag - opening Process: In the packaging machine part, the pre - placed packaging bags are picked up one by one by mechanical devices and transported to the bag - opening station. The bag - opening mechanism opens the bags by means of vacuum adsorption or mechanical grippers, preparing for material filling.
Metering and Filling Process: By precisely controlling the rotation speed and operation time of the rotor pump with a servo motor, the amount of material filled each time can be accurately determined. The metered material is then transported into the already - opened bag. For example, when packaging a certain amount of hot pot base, the weight error of each bag of base can be ensured to be within a very small range.
Sealing and Output Process: After the material is filled, the packaging machine seals the bag. Generally, longitudinal sealing is performed first to seal the side of the bag, and then transverse sealing is carried out to cut off the connection part between the bags, completing a single packaging. Finally, the packaged products are output through conveyor belts and other means.
Main Structural Components
Servo - rotor - pump Part
Pump Body Structure: It includes the pump casing and the rotor. The pump casing is usually made of stainless steel to ensure good corrosion resistance, especially when packaging some acidic or alkaline materials, such as certain chemical products. The shape and precision design of the rotor are crucial for the stability and accuracy of material conveyance, and its material also needs to have good wear resistance to cope with long - term material friction.
Drive Device: It is mainly a servo motor. The servo motor is connected to the rotor pump through connection methods such as a coupling and can precisely adjust the rotation speed and direction of the rotor according to the instructions of the control system, thereby achieving precise control of the material flow.
Bag - feeding Packaging Machine Part
Bag - feeding Device: It consists of a bag storage bin, a bag - picking mechanism, and a conveying mechanism. The bag storage bin can store a large number of packaging bags. The bag - picking mechanism takes out the bags from the storage bin through suction cups or mechanical fingers, and the conveying mechanism accurately sends the bags to various working stations, such as the bag - opening, filling, and sealing stations.
Bag - opening Mechanism: There are various types, such as vacuum bag - opening and mechanical bag - opening. Vacuum bag - opening uses the negative pressure generated by a vacuum pump to adsorb the opening part of the bag to open it; mechanical bag - opening uses mechanical grippers to clamp the edge of the bag and then stretch it open.
Sealing Mechanism: It includes a heat - sealing device and a cold - sealing device. The heat - sealing device generally uses a heated sealing strip to melt and seal the plastic film of the bag, which is suitable for most plastic packaging bags. The cold - sealing device uses special glue or tape for sealing, mainly for packaging some temperature - sensitive materials.
Control System: This is the brain of the entire packaging machine. Through devices such as PLC (Programmable Logic Controller) and touch screens, operators can set packaging parameters, such as bag size, material filling amount, packaging speed, etc. At the same time, the control system can also monitor the running status of the equipment, such as motor speed, temperature, pressure and other parameters. Once an abnormality occurs, it can alarm in time and take corresponding protective measures.
Application Scenarios and Advantages
Application Scenarios
Food Industry: In the aspect of snack foods, it can be used to package nut butters, energy bar sauces, etc.; in the condiment field, it is used to package various flavors of noodle sauces, meat sauces, etc.; in the beverage industry, it can also package thick fruit juices containing fruit pulp particles well.
Daily Chemical Industry: It is often used to package thick liquid products such as shampoo and conditioner, as well as cleaning products containing abrasive particles such as body wash and hand sanitizer.
Chemical Industry: It can package various paste - like and jelly - like chemical raw materials, such as lubricating grease, sealant, etc.
Advantages
High Packaging Precision: Thanks to the precise control of the servo motor and the rotor pump, high - precision material metering and filling can be achieved, effectively reducing material waste.
Wide Range of Applicable Materials: Whether it is a high - viscosity paste or a semi - fluid containing particles, it can be packaged smoothly, with strong adaptability to materials.
High Degree of Automation: From bag - feeding, bag - opening, filling, sealing to output, the entire packaging process is completed automatically, greatly improving production efficiency and reducing labor costs.
Good Packaging Quality: The seal is firm and beautiful, and the packaging appearance is neat, which can effectively enhance the market competitiveness of the product.
