Sorting machine completes the measurement of product weight in the process of product conveying, and compares the measured weight with the pre-set range, and the controller sends out the instruction to reject the products with unqualified weight, or distribute the products with different weight ranges to the designated area. Online sorting scale consists of weighing conveyor, controller and inlet/outlet conveyor. The weighing conveyor collects the weight signals and sends them to the controller for processing. The in-feed conveyor ensures adequate spacing between products by increasing the speed. The outfeed conveyor is used to transport the inspected products away from the weighing area.

The automatic inspection machine adopts the electronic scale control method. After the inspected product enters the inspection machine, the weighing system recognizes that the product to be inspected enters the weighing area according to external signals, such as photoelectric switch signals, or internal level signals. According to the running speed and the length of the conveyor, or according to the level signal, the system can determine, the time when the product leaves the weighing machine. From the time the product enters the weighing platform to the time it leaves the weighing platform, the weighing module will detect the weight signal, and the weighing instrument will select the signal in the signal stabilization area for processing, so that the weight of the product can be obtained. Sorting process When the controller gets the weight signal of the product, the system will compare and sort the product with the pre-set weight range.

The detector can be integrated with all kinds of packaging production lines and conveying systems, and is mainly used to detect whether the product weight is qualified or not and whether there are missing parts in the packaging. Or according to the different weights of the articles. Control the identification, reception and processing of sorting signals, instruct detection according to the requirements of sorting signals, and automatically classify commodities according to commodity varieties, delivery places or categories of consignors. These sorting requirements can be input into the sorting control system in different ways, such as bar code scanning, color code scanning, keyboard input, weight detection, voice recognition, height detection and shape recognition, etc. According to the judgment of these sorting signals, it is decided which sorting crossing a certain commodity should enter.

Checkweigher is a modern equipment to complete the picking, sorting and placing operations in distribution centers, and it is a strong technical guarantee to carry out sorting and distribution operations. It has high sorting capacity and can handle a wide range of goods. When the product enters the "weighing section" of the weight sorter, the weighing system quickly detects the weight of the product and immediately makes a judgment on whether the weight of the product is within the target weight range. If the weight of the product is qualified, it will be transmitted out of the weighing machine without any error, if the weight of the product is not qualified, it will give a delayed signal for rejection. At the same time, the system will automatically record the number of qualified and unqualified products.

The main electrical control part of the filling machine is a Siemens S7300 series PLCCPU317-2PN/DP. The filling valve control part is a control system module EX484. Siemens PLC is responsible for the safety functions, speed control, high level buffer tank level control, return cycle heating, CIP in-situ cleaning, height adjustment, signal exchange, etc. The control system is composed of Siemens PLC buses. Siemens PLC control system consists of two buses, Profibus and ASI bus. The filling machine is responsible for filling valve metering cylinder level control, tank filling level control, filling valve pneumatic control, filling angle time control and so on. The filling valve control is composed of two buses: Powerlink bus and CANbus bus.

The paint filling machine takes images of the inspected barrels on the weighing platform of the inspection weighing module in real time and transmits them to the image acquisition card. After digital decoding, A/D conversion and other processing, it is transmitted to the computer memory via PCI bus for storage. Adopting automatic weighing, PLC control, electromechanical, computer interface and other automation technologies, we have developed and completed the intelligent filling weighing and inventory management system independently.

The filling machine calculates the position information of the circular filling port in the image of the barrel cover surface, namely the filling port radius, the filling port center mark and the height of the oil gun. The corresponding position information is transmitted to the stepper motor control system, and the motor control system drives the shaft stepper motor according to the pulse instruction issued by the computer, and drives the oil gun to run above the filling port to realize automatic positioning and filling.

The filling machine meets the non-foam filling and liquid filling with foam, through the combination of weighing module, weighing instrument and filling system. It achieves the metering work of weighing and dispensing of the filling barrels, and thus the system of control. It can be directly connected to PLC system and terminal control system to realize multi-range control and automation control. The filling system digitizes the weak weight signal output from the weighing module to obtain high precision weighing data. Rich digital filtering technology is set up in the software, as well as emergency software to prevent interference with the system out of control, and so on.

Propanol filling machine is driven by stepping motor to drop down to reach the lower limit position, the well is signaled by the travel switch, and the PLC controls the filling valve to open fully for filling. The use of local area network realizes the communication between the field computer and the equipment, through the RS485 network can communicate with the filling machine each other. The use of multiple filling machines can easily constitute a RS485 distributed control system network.