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Application of new technology in flexible packaging equipment
Time: 2013-11-20 Source: Cutting Edge of Packaging Read: 13560 times
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Wenzhou Junchuan Machinery Equipment Co., Ltd.
Abstract: This article mainly introduces the innovative technology of high efficiency, energy saving, environmental protection and safety used on electronic shaft gravure printing equipment. Including: directly creating value (shaftless transmission, sleeve rubber roller, plate loading, inking integrated trolley, rigid sliding scraper with one-button reset function, fast inking system, fast up and down winding, suspension oven to reduce total loss, based on LEL's fully automatic safety and energy-saving drying system, vacuum suction traction roller, online detection device, network remote diagnosis technology, etc.), environment (solvent recovery), health and safety (electric operation box (cabinet) explosion-proof, oven explosion-proof, carbon dioxide automatic fire extinguishing device) , Wind pressure detection, grating protection, four-hole lock) and so on.
Shaanxi Beiren is a well-known domestic equipment manufacturer. Taking our newly developed 300m / min electronic shaft gravure printing machine as an example, we will introduce the application of Shaanxi Beiren's new technology on flexible packaging equipment.

300m / min electronic shaft gravure printing machine integrating value, environment, health and safety
I. Value
The value of low loss of equipment reflects:
1.Shaftless transmission
It adopts direct transmission without backlash. Accurate mechanical transmission, fast adjustment speed, reduce material loss during the lifting speed and overprinting process; electronic axis control, initial registration, 3 ~ 5 plate perimeters can be registered to reduce losses. This technology has been patented, patent number: ZL2006 1 0105215.5.
The printing plate cylinder and anilox roller are driven by independent servo motors without gear transmission. The printing length can be arbitrarily selected within the range of the machine's plate rollers. The horizontal position of the plate rollers is driven by a synchronous motor, and the printing has a primary register function.
The pressure between the printing plate roller and the center cylinder and between the anilox roller and the plate roller are adjusted by servo motors respectively, and it has a memory function and a repeat positioning function. There are two adjustment methods for printing pressure adjustment: precise adjustment and fast adjustment.
2.Sleeve rubber roller
The traditional rubber roller cart is replaced. The sleeve rubber roller does not need to be replaced, and the labor intensity is low. The replacement time of rubber rollers has been shortened from 2 people to 8 minutes to 1 person and 2 minutes. The advantages of small batches and short varieties of products are more prominent. Quickly replace the printing plate roller and anilox roller, and normally replace the 8-color printing plate roller in about 10-15 minutes, which speeds up the replacement of printed parts and reduces production costs. With memory and repeat positioning function.

The three-wrist quick-change rubber rollers are more prominent in small batches and short varieties of multiple products.
  
3 , integrated version, inking cart (can be equipped with active transfer roller)
The integration of loading, transporting and inking can be used to clean the plate roller and ink tank offline. When accidental material breakage or loose material occurs, the material will not fall into the ink tank. The semi-closed structure reduces the evaporation of solvents and protects the working environment. The "squeeze stick" at the bottom of the ink tray produces a squeezing jet effect, which is beneficial for shallow screen printing.
4.Rigid sliding scraper with one-button reset function
After positioning, it can ensure the pressure is uniform and stable, reduce the knife wire and ensure the print quality. The scraper has a key reset function (within 1mm), and the position memory guarantees the consistent quality of different batches and the same product and a key reset.
5.Fast inking system
Solvent is prepared in the solvent room according to the process order; the solvent is directly supplied to the ink tray from the solvent room, reducing the number of ink matching personnel.
6 , quick scroll
Laser-to-edge, quick chuck clamping. It adopts disc type unwinding, automatic winding, horizontal electric adjustment, pneumatic cone top or safety chuck, and automatic roll change. Can reduce the take-up time.
7 , oven can replace the nozzle
、悬浮烘箱降低总损耗 8. Suspension oven reduces total loss
9 , LEL- based automatic safety energy-saving drying system
The new LEL automatic circulation drying system saves about 45% of energy than traditional drying systems.
10.Vacuum suction traction roller
11.On- line detection device
Detect the surface of opaque materials, detect transparent or translucent materials, detect multiple materials or process inspections, and improve the qualification rate.
12.Network remote diagnosis technology     
Environment
Shaanxi Beiren Printing Machinery Co., Ltd. has started VOC treatment projects since 2010. As a manufacturer of printing, laminating and coating equipment, Shaanxi Beiren cooperates with scientific research institutions and enterprises with advanced technology and rich experience at home and abroad, and combines its advantages in equipment manufacturing and printing technology to provide diversified VOC exhaust gas. Processing technology to provide customers with the best choice, tailor-made the most suitable products and projects for customers.
VOC processing technology can be applied to gravure printing machines , dry laminating machines and various coating production lines. It can achieve true zero emissions, high energy saving, low investment, and is a typical embodiment of green packaging and low carbon economy.
1.Ethyl acetate recovery of dry laminating machine
The recovery rate can be greater than 95%, the energy recovery of the full recovery system is greater than 10%, the water content of the recovered solvent is less than 0.1%, and the purity is greater than 99%.
2.Recycling of ethanol for cork printing
The recovery rate is greater than 95%, and the purity of the recovered ethanol is greater than 95% (required for industrial ethanol).
3.Concentration of low-concentration tail gas

Rotary enrichment
The low-concentration tail gas is concentrated to reduce the total tail gas treatment volume, increase the concentration, reduce the total investment of VOC processing equipment, improve operating efficiency, and reduce operating costs.
LEL 自动控制 4.Printer LEL automatic control
5. Solvent recovery for gravure printing machine / coater (water vapor desorption)
The recovery rate is greater than 95%, and the water content of the recovered solvent is less than 0.2%.
6. Solvent recovery for gravure printing machine / coater (nitrogen desorption)
Up to 98% adsorption efficiency; a full set of European standard safety systems; automatic control of activated carbon adsorption time, suitable for high air volume, low concentration, and variable discharge processes of printing machines; low moisture content in the recovered mixed solution, suitable for Refining and separation in the later stage; Refining and separation realizes the extraction of one or two solvents, and guarantees the purity index.
Third, health and safety
1. Electrical operation box (cabinet) explosion-proof
2.Oven explosion-proof
3.Carbon dioxide automatic fire extinguishing device
Three triggering methods are adopted to ensure the high reliability of the system: automatic smoke detection trigger; remote safety triggering of nitrogen; manual failure of system failure. The system is equipped with a self-weighing system that automatically detects leaks. When a carbon dioxide leak occurs, the system automatically alarms.
4 , wind pressure detection
5 , air duct LEL detection
The wind pressure detection of the air duct prevents the oven from working without wind, so as to avoid the fire caused by the high temperature of electric heating. The LEL detects the concentration of the exhaust gas solvent to prevent the explosion or fire in the oven.
6.Ink tank cover to prevent the material film from falling into the ink tank
When the material film falls into the ink tank and then enters the oven, a large amount of solvent will be brought into the oven. The LEL value will be instantaneously high, and an explosion or fire will occur. This device can prevent the material film from falling into the ink tank.
7.Grating protection
When the turret rotates, if someone enters it by mistake, the turret will be forced to stop to prevent the operator from being involved and personal injury.
8.Four-hole lock
To prevent the crew from mistakenly turning on when they do not know each other, the personnel entering the inside of the machine can suffer personal injury. Electrical cabinet maintenance four-hole lock.
Fourth, the conclusion
This article mainly introduces the technology used in Beiren's latest electronic shaft gravure printing machine that can reflect high efficiency, environmental protection, energy saving, safety and health. The gap between domestic equipment and international first-class equipment has been reflected in these aspects. As the concepts of Chinese equipment companies are constantly updated and the technology is continuously innovated and developed, it is believed that the gap between domestic equipment and world-class equipment will gradually narrow.
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