Novel steel plate jet printing control system

Abstract

The utility model belongs to the technical field of steel plate identification, and provides a novel steel plate jet printing control system, which comprises a main control board, a PLC (programmable logic controller) and a needle valve plate, the main control board is connected with a human-computer interface computer, the PLC is mounted in an electrical cabinet and connected with a sensor element, the main control board and the PLC perform information interaction in a serial communication manner, and the needle valve plate is connected with the main control board. The main control board is connected with a needle valve plate, the needle valve plate is connected with a high-frequency electromagnetic valve in the jet printing machine head, an encoder is further arranged on the side edge of the jet printing machine head, and the encoder is connected with the main control board. The device is simple in structure, low in maintenance cost and high in practicability, manual jet printing can be replaced, labor intensity is relieved, working efficiency is improved, errors easily caused by manual marking are avoided, quality objection caused by marking errors is reduced, and product quality of companies is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of steel plate marking, relates to steel plate spray printing, and specifically is a novel steel plate spray printing control system. Background Art

[0002] The marking process of basic information of steel plates is an important part of steel production. The original marking equipment in the finishing production process of the hot rolling mill is manually controlled and operated. The marking style is outdated and prone to manual marking errors, resulting in quality disputes. At the same time, due to manual operation, the work efficiency is low and can no longer meet the new production needs of customers. It urgently needs to be updated. Utility Model Content

[0003] The utility model aims to provide a novel steel plate printing control system with a simple system structure, which reduces the burden of manual operation, improves work efficiency, ensures product marking quality, and reduces quality objections.

[0004] The technical solution adopted by the present invention to achieve the above-mentioned purpose is:

[0005] A new type of steel plate printing control system includes a main control board, a PLC controller, and a needle valve board. The main control board is connected to a human-machine interface computer. The PLC controller is installed in an electrical cabinet and connected to sensor elements. Serial communication is used to exchange information between the main control board and the PLC controller. The main control board is connected to the needle valve board, and the needle valve board is connected to the high-frequency solenoid valve in the printing head. An encoder is also provided on the side of the printing head, and the encoder is connected to the main control board.

[0006] Furthermore, the PLC controller and the main control board controller are connected via the serial port RS232.

[0007] Furthermore, network cables are used for communication between the human-machine interface computer and the main control board, and between the human-machine interface computer and the PLC controller.

[0008] Furthermore, the sensor elements include proximity switches, photoelectric sensors, liquid level sensors, and pressure sensors.

[0009] Furthermore, the proximity switch is used to detect the position of the cylinder, the photoelectric sensor is used to detect the position of the steel plate, the liquid level sensor is used to detect the oil of the paint and dilution solvent, the pressure sensor is used to detect the air pressure, and the encoder is used to determine the running direction and speed of the steel plate.

[0010] Furthermore, the PLC controller is also connected to the cylinder solenoid valve, the alarm output device, and the operation cabinet button;

[0011] Furthermore, the cylinder solenoid valve includes a cylinder safety valve and a cylinder air inlet valve, which are used to control the rise and fall of the printing head;

[0012] Furthermore, the alarm output device uses a plurality of alarm lights, which have preset parameters to give an alarm;

[0013] Furthermore, the control system also includes a high-power switching power supply to provide a stable power supply for the circuit.

[0014] The beneficial effects of the utility model are: the control system has a simple structure, low maintenance cost, strong practicality, can replace manual printing, reduce human labor intensity, improve work efficiency, and at the same time avoid errors easily caused by manual labeling, reduce quality objections caused by labeling errors, and improve the company's product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the utility model;

[0016] Figure 2 This is a wiring diagram of the main control board in this utility model;

[0017] Figure 3 This is a schematic diagram of the PLC circuit connection in the utility model;

[0018] Figure 4 This is a schematic diagram of the external wiring of the PLC in this utility model;

[0019] Figure 5 This is a flow chart of controlling inkjet printing of the utility model. DETAILED DESCRIPTION

[0020] The present invention will be further described below with reference to the embodiments and accompanying drawings: Example

[0021] A new type of steel plate printing control system, such as Figures 1 to 4As shown, it includes a main control board, a PLC controller, and a needle valve board. The main control board adopts a Panasonic stacked FP0H controller, which is connected to a human-machine interface computer, namely an HMI computer. The HMI computer is installed in the operation room. The PLC controller adopts a Siemens S7224, which is installed in the electrical cabinet and connected to the sensor element. The PLC controller and the main control board are connected through the serial port RS232. The human-machine interface computer and the main control board, as well as the human-machine interface computer and the PLC controller, are connected and communicated using a network cable. The main control board is connected to the needle valve board through a PCI slot expansion. The needle valve board includes an optical coupling. Devices and power tubes are installed in the on-site operation cabinet. The needle valve plate is connected to the high-frequency solenoid valve in the printing head. The needle valve plate outputs pulses to control the on and off of the high-frequency solenoid valve to control the paint printing and realize the production of characters. An encoder is also provided on the side of the printing head. The encoder adopts the Guangxin Sensor HI100K25 model (pulse number is 2048). The encoder is connected to the main control board. When the printing head drops on the steel plate, the encoder starts to work as the steel plate moves, and the encoder signal is input into the main control board. The encoder has two functions: one is to judge the running direction of the steel plate, and the other is to detect the running speed of the steel plate.

[0022] The sensor elements include proximity switches, photoelectric sensors, liquid level sensors, and pressure sensors. Among them, the proximity switches are set at both ends of the cylinder to detect the position of the cylinder. The photoelectric sensors are set in the control box to detect the position of the steel plates and determine the order of the steel plates. The liquid level sensors are set in the paint and solvent cabinets, including paint sensors and diluent sensors, to detect the oil of paint and diluent solvents. The pressure sensor is set in the control box to detect the air pressure. The PLC controller collects and makes logical judgments based on the working status of each sensor element, including paint and solvent liquid levels, steel plate sequence, air pressure value, printing head status, whether the printing head has started working, etc. The PLC controller is also connected to the cylinder solenoid valve, alarm output device, and operation cabinet buttons; the cylinder solenoid valve controls the lifting cylinder to realize the rise and fall of the printing head. The cylinder solenoid valve includes a cylinder safety valve and a cylinder air intake valve. The cylinder air intake valve is responsible for controlling the air intake of the lifting cylinder. The cylinder safety valve limits the gas pressure in the lifting cylinder to ensure the safety of the cylinder and prevent the lifting cylinder parts from being damaged; the alarm output device uses a number of alarm lights, and the alarm lights of preset parameters such as air pressure, solvent level, paint level temperature, etc. are used to alarm; the operation cabinet buttons are used to manually control the start, stop, emergency stop and other operations of the printing head; the printing control system is also equipped with a high-power switching power supply to provide stable power for the circuit.

[0023] The specific work flow of the printing control system, such as Figure 5 Shown include:

[0024] Confirm the printing information on the HMI computer operation interface (including the selection of printing content, number of prints, barcode, etc.);

[0025] Photoelectric sensor detects the steel plate in place;

[0026] The signals of paint level sensor, thinner level sensor, etc. are input into PLC controller, and the PLC controller logic determines whether the printing conditions are met;

[0027] The cylinder safety valve opens, the cylinder air inlet valve opens, the printing head descends, and the encoder contacts the steel plate;

[0028] The encoder starts working and the encoder signal is input into the main control board;

[0029] The main control board determines the running direction of the steel plate and calculates and measures the running speed of the steel plate based on the encoder signal;

[0030] The main control board outputs the control signal of the needle valve board, which controls the output signal of the needle valve board and controls the high-frequency solenoid valve in the printing head to start working;

[0031] The high-frequency solenoid valve controls the nozzle of the printing head to open or close, and prints the preset characters;

[0032] Wait for the next steel plate to arrive and repeat the above operation.

Claims

1. A new type of steel plate printing control system, characterized by: It includes a main control board, a PLC controller, and a needle valve board. The main control board is connected to the human-machine interface computer. The PLC controller is installed in the electrical cabinet and connected to the sensor element. The main control board and the PLC controller use serial communication to exchange information. The main control board is connected to the needle valve board, and the needle valve board is connected to the high-frequency solenoid valve in the printing head. An encoder is also provided on the side of the printing head, and the encoder is connected to the main control board.

2. A novel steel plate printing control system according to claim 1, characterized in that: The PLC controller and the main control board controller are connected via the serial port RS232.

3. The novel steel plate printing control system according to claim 1 is characterized in that: Network cables are used for communication between the human-machine interface computer and the main control board, and between the human-machine interface computer and the PLC controller.

4. A novel steel plate printing control system according to claim 1, characterized in that: The sensor elements include proximity switches, photoelectric sensors, liquid level sensors, and pressure sensors.

5. A novel steel plate printing control system according to claim 4, characterized in that: The proximity switch is used to detect the position of the cylinder, the photoelectric sensor is used to detect the position of the steel plate, the liquid level sensor is used to detect the oil of paint and dilution solvent, the pressure sensor is used to detect the air pressure, and the encoder is used to determine the running direction and speed of the steel plate.

6. The novel steel plate printing control system according to claim 1 is characterized in that: The PLC controller is also connected to the cylinder solenoid valve, the alarm output device, and the operation cabinet buttons.

7. A novel steel plate printing control system according to claim 6, characterized in that: The cylinder solenoid valve includes a cylinder safety valve and a cylinder air inlet valve, which are used to control the rise and fall of the printing head.

8. The novel steel plate printing control system according to claim 6 is characterized in that: The alarm output device uses a number of alarm lights and preset parameters to issue an alarm.

9. The novel steel plate printing control system according to claim 1, characterized in that: The control system also includes a high-power switching power supply to provide a stable power supply for the circuit.

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