

Measuring and batching machine gives the control current of pump according to the ratio value, PLC outputs 4-20mA to control the pump and pump frequency converter, so that the flow control of discharging material is PID regulation, and according to the ratio of process requirements, the corresponding tracking flow is calculated and transmitted to PLC. PLC gives the control current of 4-20mA to control the frequency converter of the auxiliary material scale, so that the corresponding flow of the batching material is controlled in the range of the tracking flow most. The premixer, distribution screw machine and the umbrella fan are equipped with on-site shoulder and stop buttons, which are converted by remote control and connected to the central control room. The start-stop control of the equipment can be realized through the start-stop button on the lip distribution cabinet, or the start-stop button on the human-machine interface after the distribution process can also be manipulated. It can also realize the start/stop control by controlling PLC.

Measuring and batching machine is the ideal batching equipment for continuous weighing and feeding of bulk materials, which is used for continuous conveying, static measuring and automatic batching of powdery and granular materials, and the materials are received, measured and conveyed through the fully enclosed conveyor driven by motor. According to the recipe requirements in a number of bins to complete a variety of materials under the measurement of dosage, to each discharge port automatic unloading, you can realize the receipt of automation, the control room using industrial computer and PLC system, the entire dosage line status in the industrial computer screen can be seen at a glance, the user can be in the field of the entire production process control, the site does not need artificial, the system can also record and print the results of the various times the dosage, print the daily report, the monthly report. The computer can store up to 100 recipes.
The batching line consists of silo, screw Feeder, weighing hopper, review hopper and powder system. The weighing hopper is located below the silo, in order to prevent wrong weighing and to ensure the weighing accuracy, a review hopper is set up under the weighing hopper to review the weight of each weighed powder. Each weighing hopper and checking hopper is equipped with 3 Weighing modules. The weighing modules are mounted in the radial direction of the hopper and send the weight signals to the weighing instrument through a junction box. The review hopper is driven by a self-propelled trolley, and the review hopper also serves as a collecting hopper.
The automatic Batching system is composed of upper computer, programmable controller (PLC), weighing instrument, travel switch, frequency converter, temperature sensor and so on. At the beginning of powder dosing, the trolley arrives at the bottom of the specified weighing hopper, the frequency converter controls the spiral feeder to feed the material at double speed, the weighing instrument outputs the quality signal collected by the sensor to PLC, and after reaching the set quality value, the unloading gate of the weighing hopper opens to unload the dosed powder into the review hopper. If the unloaded mass value is within the specified range, the next powder formulation will be carried out, otherwise the alarm will be stopped. When all the powders in the selected formula have been prepared, the gate of the review hopper is opened, and the prepared powder is unloaded and sent to the powder mixer to start the next cycle of the powder preparation process. During the weighing process, the position of the trolley is controlled by the travel switch. As part of the powder needs to be heated and dehumidified, there is a heating and insulation circuit on these silos, and the temperature sensor collects temperature signals at certain time intervals and sends them to PLC, which controls the temperature of the silo to keep it in a predetermined range.
When the upper computer as the host control, first select whether it is premixed powder preparation or finished powder preparation, and then select the formula, press the start button after the powder preparation production line automatically complete the powder preparation work, and the powder preparation data stored in the upper computer real-time database, so as to carry on the data statistics and report printing. In manual control panel control, in addition to selecting premixed powder preparation or finished powder preparation, it should also select the working mode: manual, single-step operation, single-cycle operation, automatic and return to home position. If the system is already in the initial position, you can press the start button to start powder preparation; if the system is not in the initial position, you should first select the work mode of returning to the origin, press the start button of returning to the origin, the trolley will return to the origin position.
With the central dryer (dehumidifier) system to use, can make the dry air on the raw materials to dry again, to prevent the drying of the plastic back to moisture, and at the same time in each conveying cycle after the conveyor pipe to clean up, to ensure that there is no residual material in the pipeline. In order to avoid the raw material moisture back at the same time also ensure that the raw material added to the injection molding machine, in the vacuum negative pressure with the role of the raw material into the original dust through the filter (dust collector) system filtered out, and is conducive to improving the quality of the product.