Zinc and magnesium etching machine is a kind of churning powder-less etching machine to make the hot stamping and film printing dies.
The etching machine is designed based on the force of impact and thermal tolerance theory, is the combined result of the physical processes and chemical reactions. Its role in the process is as follows,
Additives under the mechanical agitation of the etching machine, emulsification, suspension in an aqueous solution of nitric acid, was spilled onto the clamp plate of the etching machine, the complex protective film is formed on the surface of the etched metal plate, a thin layer.
In the etching machine, it is different adhesion in the various parts of the plate surface for the protective film, on the graphic part due to the presence of the photosensitive layer, the adhesion of the protective film is stronger.
Under the direct impact of the solution on the clamp plate of the Zinc and magnesium etching machine, the portion without the photosensitive resist protection is to be opened by the impact of the nitric acid solution, in the chemical reaction, the metal plate is dissolved in the solution of the etching machine to the ionic state, meanwhile the reaction heat released. The part of metal coated with photo resistance, was protected well, the temperature is relatively lower, so that on the edges of the picture the temperature is to be retained on the forming temperature Terrible, this will enhance the adsorption effect of the additive oil, to prevent being etched from the nitric acid. Continue stirring in the Zinc and magnesium etching machine, metal plate was etched increasingly deep and the sidewalls formed with good shoulder.
structure of the main body:
The shell of the Zinc and magnesium etching machine, is the flat square housing by senior PVC, the lid can be opened on the top of the box.
On the cover of the etching machine, there are turntable, and fixture, the metal plate should be fixed on it;
A separate motor was adopted on the cover of the zinc and magnesium etching machine, work slowly rotating, driven splint uniform rotation.
The lid is opened in the front of the case, another hinged link arm adopted at one end with heavy rail.
There are several axe in the main body of the zinc and magnesium etching machine, the axle is arranged parallel to the spindle shaft paddle, several axes located in the same horizontal plane, and driven by a belt in a same angular velocity. The axe extend out of the box of the zinc and magnesium etching machine, to the chassis vitro, and respectively connected to the bearing housing and the pulley, and then driven by the FM motor fixed under the box through the belt.
In the bottom of the zinc and magnesium etching machine, below the water line, at the following locations, there are heating tube, temperature sensing gauges and cooling pipes, cold water or a refrigerant circulating in the tubes, to reduce the temperature of the etching machine.
Also on the bottom of the zinc and magnesium etching machine box, a control valve is packed outfall drain fluid from the liquid for cleaning the etching machine and adjusting the acid liquid level line.
The main box of the etching machine is seated on a framework, the base frame was welded by angle iron into play a load-bearing, stability.
The base power system, gearshift systems, cooling systems, water tanks, and other power, electrical components were fixed in the base frame of the etching machine.
The Cooling pipe end go out of the wall of the etching machine, and connected to an external air conditioner outdoor unit or cold water tank.
The structure of the operating and controlling box:
Manipulation box was connected by cable with the main box of the etching machine.
Manipulation box selected on its operating panel, the temperature gauge, tachometer, timing control table, start / stop button, automatic / debug button, forced heating, refrigeration button.
The operating and controlling box includes a variety of electrical switches, transformer parts. And an external three-phase power supply to this etching machine.
The running parameters, real-time monitoring, through the meter display and the instrument, can be set or generating a control instruction.
The configuration of the refrigeration system:
Zinc plate etching machine generally adopt the air conditioning as standard refrigeration, driven directly by the air conditioner outdoor unit, the refrigerant is circulated within the cooling refrigeration.
For magnesium plate etching machine, due to heat faster, more powerful cooling capacity is necessary, so etching machine must adopt the indirect water cooling method.
Under the body of the etching machine box, there is a cold water tank driven by the air conditioner outdoor unit, and the water supply and refrigeration;
The cold water was driven by the pump into the etching machine body cooling pipes, and then back to the cold water tank, so the cycle to complete the refrigeration process.
The difference between magnesium etching machine and zinc:
The magnesium plate is etched so faster than Zinc. The heat generated by the chemical reaction in the etching machine in a short period of time focus on the outbreak, so the magnesium plate etching machine needs a strong cooling capacity to control the reaction temperature. Magnesium plate etching machine requires a minute to cool 5 degrees Celsius, zinc plate machines generally is designed to work in 2 degrees Celsius per minute.
The zinc plate etching machine using air conditioning as refrigeration, is a direct cooling mode; the magnesium plate is chilled by water cooling, belonging refrigerant indirect refrigeration. The magnesium plate etching machine equipped with a cold water tank, you can reserve in advance of the cold.
Refrigeration capability in magnesium etching machine can be precisely controlled in a timely manner. This is essential for the perfect etched magnesium plate.
Magnesium etching machine with exhaust system, nitric oxide gas produced by the high temperature can be discharged in time to protect the fine lines.
The magnesium plate is etched below the temperature of 50 degrees Celsius, and with the paddle speed around 600rpm max.
For the precise controlling to layout a etching effect, sometimes manual manipulation on the control box of the etching machine to debug is necessary.
We have a full magnesium plate etching process, for example, to have a brief introduction to the work of the etching machine.
First make the solution according the formula, then adjust the liquid level line, and activate the etching machine, the mixture was stirred for a period of time, so that the solution was thoroughly mixed, and to allow additive emulsified and suspended in the solution, and heating the solution to a desired temperature.
Set up the temperature control range of the etching machine, and the impeller speed, the etching time.
Developing the magnesium plate, and protected by Arabic gum, fix the magnesium plate on the top cover operating panel, tighten it; close the lid and start the etching machine began to work.
While the set time is reached, the etching machine is automatically adjusted by the high-speed to low-speed, quickly open the cover to remove the magnesium plates, cleaning it, and close the lid of the etching machine.
After a process of a magnesium plate etching, please add acid to the etching machine, together with appropriate additives, check the liquid level, and re-set temperature, speed, time, after the adjustment, and then began another magnesium plate etching process.
In the etching process, with the heat released by the chemical reaction of the magnesium plate and nitric, temperature increase fast in the solution in the etching machine, when the upper limit of the set temperature is reached, the air conditioner start to work on cooling. The refrigerant in the circulating flow fast in the pipe fixed on the bottom of the magnesium etching machine to remove heat, to reduce the temperature of the solution, to complete the cooling process, until the temperature reaches the set value.
If the magnesium etching process last a long time, the chemical reaction would layout more and more heat, then the refrigeration system of the magnesium etching machine may be repeated several times. The control of the operating the pump and stop it was done by the temperature monitor controller on the operating box.
The history of the powder-free high-speed etching machine in China is roughly introduced as following:
The early 1950, etching metal plate making industry in China, is something called powder protection etching. There is no any idea about the etching machine.
At that time, in the Beijing, collecting together some metal plate etcher, to making industry’s self-employed industrial and commercial transformation, a public-private partnership plate factory was set up, adopting pink powder etching technology, and was engaged in manual plate making. This factory is a typical representative of that period.
This handmade method is low production efficiency, the product can not be standardized, no high quality achieved. Until the early sixties, led by the Ministry of Machine (People’s Republic of China Ministry of Machinery Industry) and Beijing Institute of Printing, organize relevant units to deal with a zinc etching machine, imported from a neighboring country.
The etching machine is successfully developed in the forties of the last century by the father and son two generations. The company also produced the first powder-free, high-speed metal plate etching machine.
After the import of the zinc etching machine and, this machine was shipped to Yingkou, Yingkou printing equipment plant begin to copy it. They organized capable technical force, day and night research, to overcome all kinds of difficulties, and finally, in 1964, the first prototype of powder-free high-speed metal plate etching machine was born.
The prototype of zinc etching machine was delivered to Beijing, in the People’s Liberation Army General Staff, in the People’s Liberation Army Daily, to test running it and did all kinds of tests, until the zinc etching machines was stereotyped. The Yingkou printing equipment plant, in 1965, produced Chinese the first generation powder-free high-speed zinc etching machine. Later, they improved some function, and provide the second generate zinc etching machine. Now, the original drawing of the first-generation and second-generation etching machine, are housed in the archives of Liaoning in Shenyang city.
This metal plate etching machine run fast, and provide good graphic side slope, can make plate with high-quality shoulder, and of course the low labor intensity. With the domestic promotion of Chinese press and publication industry on this etching machine, popularity, powder-free etching method was eliminated soon.
Yingkou medical instrument plant, in 1950, was firstly established specializing in electronic medical devices, and mainly produce a small 3080 X-ray machine. This factory changed to produce the arc lamps applied in the production of printing and photographic equipment. Years later, it was renamed the Yingkou printing equipment plant, and in the 1960s started the development and production of powder-free high-speed metal plate etching machine. This plant, in 1960s, had developed over Chinese earlier engraving machine, and after parts bulky and other reasons, there is no mass production. There is a precious profile picture:
In 1965, Yingkou began mass production of the WF405-type powder-free high-speed metal plate etching machine. The production plan was issued by the State, national unity allocate, mainly allocated to the provinces, Xinhua Printing House, the city of major newspapers and publishing units. Until the early 1980s, the annual number of production of the etching machine was about 100 units, the peak period of no more than 200 units. After the reform and opening up, in China, Jiangxi, Beijing and other places, somebody started to copy and produce etching machine.
After the reform and opening up, China’s rapid economic development, cultural and publishing, packaging and printing industry of unprecedented prosperity, Yingkou etching machine, with all over the country with a long history of excellent quality, had the market share of more than 80%, providing a strong support to the development of the publishing industry in China.
Yingkou Bisheng Printing Equipment Co., Ltd., dedicated to the research and development of zinc and magnesium etching machine, with the accumulation of 50 years in technology innovation. It has been leading the metal plate etching machine industry progress all this half century in China.
Technical innovation and significant events:
The etching mechanical transmission system by the first generation of the mechanical outer ring type continuously variable transmission instead of the second generation of slip-type continuously variable transmission system, and later upgraded to a belt-type, continuously variable DC motor until today’s FM motor transmission system.
Bisheng company successfully developed Chinese first magnesium etching machine. The cooling system is designed to be cooled indirectly through the refrigerant. Its significant features can advance the frozen water, cold reserve. You can also configure the vice box, large reserves of refrigerant. This improvement can be better adapted to the needs of the etching of magnesium plate.
Bisheng company provide the latest magnesium etching machine with a PLC (programmable logic controller), specifically designed for industrial environment applications, and configure the appropriate functional unit, a collection of temperature, speed, time, and manipulation button functions to achieve a high degree of mechanical and electrical integration, it has very low failure rate and higher system reliability.
For the magnesium etching machine, the temperature control, time, operational processes parameters can also be designed for each etching cycle, particularly this method of the parameters setting, can make the process of magnesium etching machine being controlled well in particular, automatic, accurate.
Yingkou Bisheng etching machine, is well designed by 50 years experience.
The body box is made and welded from the best engineering plastics, no blistering, no deformation, acid and alkali.
The top lid on the cover of the etching machine is floated PVC static film, corrosion-resistant, anti-aging.
Etching machine spindle, the blade, the heating pipe jacket, refrigeration tubes, etc., are made of titanium steel and pure titanium metal.
The distribution system is used in all aviation cable, high flame retardant, anti-aging.
The base of the etching machine is made of stainless steel angle welded and PVC powder electrostatic spraying.
Meter (time, speed, temperature) on the digital display, more accurate, and intuitive.
The power distribution control parts is international marketed, is world famous brand-name products.
The etching machine drive spindle LDK-P204 high-precision self-aligning spherical bearings.
The etching machine compressor is selected from the most advanced international supplier of the rolling rotor (Mitsubishi, Hitachi) and totally enclosed fan cooled compressor unit.
Yingkou BiSheng etching machine performance parameters:
1. Temperature measurement tolerance: +1 ℃
2. revolutions measurement tolerance: +10 r / min
3. digital time tolerance: +0.01 s / min
The after-sales service of the etching machine by Bisheng is below:
Work for the installation of new equipment, debug it, and teach the technology of metal plate etching.
For product quality, one year warranty.
In the full life of the etching machine, we provide a variety of parts for repair and replacement.
For standard parts, parts drawings, local procurement;
Donate some part of quick-wear parts.
Consulting stands ready to provide technical and equipment maintenance.
The package of the etching machine:
The packaging is made of solid wood side, nine co plywood made of fully enclosed box, the bottom is solid wood pallet framework, the etching machine is fixed to the chassis. The inside is lined with plastic, foam, to prevent collision, scratch.
While opening the package of the etching machine, please note gently, and complete protection of the etching machine parts, connected correctly and firmly.