In modern manufacturing, there is an increasing need to print numbers, barcodes, patterns or text on products or overpacks frequently or at high speed. Non-contact continuous inkjet printers are undoubtedly the first choice for production. At high pressure, the ink enters the spray gun, which is filled with a crystal. The frequency of the crystal oscillator is approximately 62.5 kHz. By the vibration, the ink is ejected to form a fixed interval while being charged at the charging pole. The charged ink dots are deflected by the deflection of the high voltage electrode and fall on the surface to be printed to form a lattice. The ink dots corresponding to the blanks are not charged, so they are not deflected and are directly injected into the recovery tank and recycled. Fault 6: Diluent, less ink failure (FluidsLowWarning) Fault 14: Grating switch failure (InkCylinderSwitchFault)
In modern manufacturing, especially in the food, beverage, tobacco and alcohol, cable, pharmaceutical and cosmetics industries, there is an increasing need to print numbers, barcodes, patterns or text on products or overpacks frequently or at high speed. Before the invention of non-contact continuous inkjet printers, enterprises often used ink printers, screen printers, pad printers and even more primitive mechanical roller punches to contact the printing press, which not only had poor text definition, but also took time. Laborious, low production efficiency, and more importantly, the loss of customers and consumers due to the low quality of the printed products, causing losses to the production enterprises. Therefore, advanced equipment is urgently needed to replace them.
Now, after the invention of the non-contact continuous inkjet printer, its application to production has undoubtedly become the first choice for changing the backward situation.
Advantages of coding technology
Scientists and many scientific and technological workers have worked hard to develop two types of non-contact continuous inkjet printers, such as small-size inkjet printers and carton-printing large-size printers. The small-size inkjet printer is mainly used for printing small characters, numbers and graphics equal to the product, and the carton printing type large-sized machine is used to print large characters, figures and graphics on the outer packaging carton. These two types of non-contact continuous inkjet printers have the following advantages over the printing equipment and techniques previously used.
(1) Clear and long-lasting writing: controlled by computer, accurately print the required numbers, characters, patterns and barcodes.
(2) High degree of automation: automatic change of date, batch and number to realize unmanned operation of the printing process.
(3) Wide range of applications: can match any production line. It can print trademarks, date of manufacture, description, batch number, etc. on the surface of various materials such as plastic, glass, paper, wood, rubber, metal, and different shapes.
(4) Quick and easy programming: Input numbers such as numbers, texts, patterns and lines on the computer or editing machine, and change the printing information, and these operations can be completed only by pressing the button.
(5) The size of the character is adjustable: the font width and height have suitable adjustable ranges, and the font can be arbitrarily bolded.
(6) The number of print lines can be adjusted: the number of print lines is 1 to 5 lines, and can be arbitrarily matched.
(7) Printing speed is extremely high: 800 characters/second and 120 meters/minute.
(8) Achieve special needs: Use invisible ink to perfectly print invisible information or anti-counterfeit identifiers on the product.
The non-contact small-size inkjet printer and the carton-printing large-size machine are the crystallization of high-tech. Its reliability is quite high, the software version is easy to upgrade, and the cost of printing on the product is very low, so it is widely used in various industries. application.
At present, the famous small-name inkjet printers on the market include Metronic Germany, VideoJet, and France's Imaje. In addition, equipment such as Domino UK Domino and EBS Germany are also very good. The famous carton printers are available from Germany's Ebide, LINX UK, and Xindajia.
Principle of code printing
The more advanced the equipment, the higher the requirements for maintenance personnel. Maintenance personnel are best trained by the professional printer of the printer, and first understand the principle of inkjet printing. Below, take the small-size inkjet printer as an example to introduce its principle of inkjet printing.
The difference between the coding principle of the large-size machine and the small-size inkjet printer is that the spray gun is equipped with seven micro-shaped solenoid valves that can be opened and closed at high speed, and the amorphous vibration, the text or graphics to be printed, etc. are processed by the computer board. The output board outputs a series of 7 sets of electrical signals to 7 micro-shaped solenoid valves in parallel, so that the ink dots are printed on the printed surface to form a dot matrix, which becomes text, numbers or graphics.
Printing printer repair
Before you can repair the code printer, you must first read its service manual and use the program menu of the printer, especially the Service menu. The following is an example of the United States Videojet Small Engine Excel-100 (170i), explaining the troubleshooting and adjustment techniques.
Fault 1: No signal fault (NosignalFault)
Overview: There is a problem with the recovery port sensor.
Detailed reason: The ink line did not enter the recovery tank.
Fault 2: Phase fault (PhasingFault)
Overview: No signal is sensed.
Detailed reasons: 1 ink pressure solenoid valve failure or pressure regulation is not normal; 2 ink dots are not formed or form irregular ink dot sequence; 3 ink line is unstable (nozzle blocked); 4 ink is contaminated; 5 ink recovery sensor line and ground Line short circuit or broken; 6 main control board is damaged; 7 power ground wire is poorly grounded; 8 charging tunnel signal line is broken, charging tunnel is down; 9 recovery port or recycling pipe is blocked; 10 vacuum is not formed.
Fault 3: The ink fill request signal is too long (ReservoirLowRequestTooLongFault)
Overview: The ink fill request switch is turned on for longer than 30 seconds.
Detailed reasons: 1 ink chamber float sinking or abnormal activity (ink back into the vacuum filter); 2 ink added valve pollution or can not open; 3 ink added solenoid valve damage; 4 vacuum is lower than the standard; 5 ink chamber liquid The position monitoring switch is damaged (ink backflow into the vacuum filter); 6 ink added filter is clogged.
Fault 4: Ink chamber overfill failure (ReservoirOverfill)
Overview: The overfill switch of the ink chamber is activated.
Detailed reasons: 1 The liquid level monitoring switch in the ink chamber is damaged; 2 The cleaning liquid flows into the ink cartridge from the recovery port; 3 The ink or the diluent is added to the valve to leak; 4 The ink or the diluent is added to the solenoid valve to be damaged.
Fault 5: Air Pressure Fault (AirPressureFault; NoAirForWarm-upFault)
Overview: The air pressure switch is open for more than 20 seconds.
Detailed reasons: 1 air pressure monitor is damaged; 2 air pressure is less than 60 Pa.
General: Ink less switch for more than 30 minutes or use an empty cartridge.
Detailed reasons: 1 empty diluent bottle; 2 ink bottle start inkjet printer (or empty diluent bottle); 3 empty ink bottle; 4 ink less switch damage (open circuit); 5 ink tube position adjustment is incorrect; 6 test air pressure The adjustment is incorrect.
Fault 7: High Voltage Fault (HighVoltageFault)
General: The high voltage deflection plate is grounded.
Detailed reasons: 1 nozzle is short-circuited to ground; 2 ink is filled in the nozzle; 3 nozzle connection cable is damaged; 4 nozzle is not blown after cleaning.
Fault 8: Transfer request too long failure (TransferRequestTooLongFault)
Overview: The transfer switch is activated for more than 15 seconds.
Detailed reasons: 1 the sink in the ink chamber sinks or abnormal activity; 2 transmission solenoid valve damage or air tube leakage; 3 pump film deformation or wear; 4 shut-off valve piston wear; 5 transmission pressure is too low; 6 pipeline, one-way The valve or interface is fouled; 7 the ink tank sensor switch is out of order or the ink tank is empty; 8 the ink is contaminated; 9 the sum of the ink pressure and the transport pressure is greater than the total air pressure.
Fault 9: Injection time is too long (FilLTimeTooLongFault)
Overview: The control system does not detect a suitable transmission cycle.
Detailed reasons: 1 air pressure is lower or higher than the specified requirements of the ink; 2 the float in the ink chamber sinks or abnormally moving; 3 the pump membrane is deformed or worn; 4 the transfer pressure is too low; 5 the pipeline, the check valve or the interface is blocked ; 6 ink is contaminated.
Fault 10: Emptying time is too long (EmptyTimeTooLongFault)
Overview: The ink discharge cycle is greater than 125% of the set time.
Detailed reasons: 1 ink pressure is changed after adjustment; 2 ink filter is fouled; 3 pipe or interface is blocked.
Fault 11: Process time is too long (FlowTimeTooLongFault)
Overview: The process time is 115% to 124% of the design time.
Detailed reasons: 1 nozzle or ink valve is blocked; 2 system is changed after adjustment.
Fault 12: Flow time is too short (FlowTimeShortFault)
Overview: The process time is shorter than 85% of the set time.
Detailed reasons: 1 ink pressure is changed after adjustment; 2 ink is over-diluted (diluent from the recovery port into the ink tank); 3 system adjustment is incorrect; 4 no ink filter installed.
Fault 13: Cartridge switch failure (SwitchReservoirFault)
Overview: The liquid in the cartridge is too low or too high, and the switch does not work.
Detailed reason: Clean the machine with a diluent to see if it is effective.
Overview: The pressure ink is too little or too full and the switch does not work.
Detailed reason: Clean the machine with a diluent to prevent the float from sticking to the ink.
Fault 15: No phase fault (A: NophaseTimeFault; B: NoPhasingWarning)
Overview: The dots are not charged or not good.
Detailed reason: A: The correct phase is not selected, and one of the five phase states should be selected as the most suitable;
B: 1 too much product or line speed too fast; 2 double pulse trigger signal; 3 between product sensing and proper processing of internal phase test, the system takes 5 milliseconds.
Fault 16: Ink Diluent Depletion Fault (FluidsOutFault)
Overview: Downtime.
Detailed reasons: 1 ink bottle or diluent is exhausted; 2 ink dilution solution addition valve is damaged; 3 pipeline damage or interface leak
In modern manufacturing, there is an increasing need to print numbers, barcodes, patterns or text on products or overpacks frequently or at high speed. Non-contact continuous inkjet printers are undoubtedly the first choice for production.
In modern manufacturing, especially in the food, beverage, tobacco and alcohol, cable, pharmaceutical and cosmetics industries, there is an increasing need to print numbers, barcodes, patterns or text on products or overpacks frequently or at high speed. Before the invention of non-contact continuous inkjet printers, enterprises often used ink printers, screen printers, pad printers and even more primitive mechanical roller punches to contact the printing press, which not only had poor text definition, but also took time. Laborious, low production efficiency, and more importantly, the loss of customers and consumers due to the low quality of the printed products, causing losses to the production enterprises. Therefore, advanced equipment is urgently needed to replace them.
Now, after the invention of the non-contact continuous inkjet printer, its application to production has undoubtedly become the first choice for changing the backward situation.