Nowadays, the social high-tech development is becoming more and more international. Plastic bag products are completed by fully automatic bag making machines, which are mainly applicable to high-density polyethylene, plastic hot film bag making, etc. because of its high degree of automation, the production efficiency is also good, and finally it is widely popular in the plastic bag industry.
Structure of plastic bag making machine a plastic bag making machine is mainly composed of material storage device, stepping device, frequency conversion device, bag forming device, heat sealing cutter and control device. The main features are that the material storage device stores a corresponding amount of raw materials, the stepping device drives the raw materials, the frequency conversion device drives the heat sealing cutter, and the whole bag device completes the bag after the number of bags is fixed. The heat sealing cutter controls its temperature to seal and cut the raw materials, and the control device coordinates the actions of all aspects as a whole.
The frequency converter of bag making machine adopts delta M series frequency converter. Delta M series frequency converter has the functions of automatic torque compensation, slip compensation and automatic voltage stabilization. When the motor is frequently started and stopped, it can effectively protect the motor, avoid the impact of starting current on the power grid, and effectively achieve energy saving and consumption reduction. Delta dta4848r is used as the temperature controller. Delta air conditioner has self-tuning function, and the temperature error is controlled within 0.1 degree. The main control methods of the bag making machine are as follows: 1. Open the discharging switch, and control the action of the storage motor through the storage photoelectric to store the quantitative materials. 2. Turn on the heating control switch and heat the hot knife through the thermostat. 3. The raw material is driven by the stepping motor, and the white bag sealing and cutting is to determine that the stepping motor stops for a fixed number of steps to realize the fixed length control; The color bag sealing and cutting realizes the positioning control by detecting the corresponding signal detected by the electric eye and stopping the stepping motor. 4. After the stepping motor stops, the three-phase asynchronous motor drives the hot knife to seal and cut. 5. When the number of bags is set for sealing and cutting, the whole bag is carried out.
