The day to attend the press conference, Austrian Commercial Counsellor Strehl said in Hong Kong, Austria and China's increasingly close economic and trade relations, the bilateral trade volume between the two countries has tripled in the past decade; Austria trend of investment in China is also steadily growth, about 620 Austrian companies operating in Mainland China and Hong Kong.

Burning non-stop domestic machine tool industry is coping with the European debt, mainland economic slowdown and capital in short supply, most tools Factory in the second half of economic chaos and unknown, East and Takizawa Division the two successively received big orders, the mainland and the implementation of the new The wave of car subsidy policy can drive the demand for auto parts industry, the two companies had a reassurance, the first to declare that the second half than the first half. Dongtai chairman Yan Ruixiong domestic machine tool industry in the European debt burning non-stop, the mainland's economic slowdown and funds in short supply, most of the second half of economic chaos and unknown, East and Takizawa Division two tools Factory successively received single, continent but also the implementation of a new wave of car subsidy policy can be driven by demand for auto parts industry, the two companies had a reassurance, and the first to declare that the second half than the first half.

    East Taiwan, chairman of Yan Ruixiong a few days ago was a result of the mainland economy growth slowed down, demand is less than expected, that this year's economic chaos is unknown, but he said Tuesday in the board of directors of the East Taiwan with the mainland to start a new wave of car subsidy policy, the estimated drive 2 million units of demand, forecast the second half of the mainland auto industry demand to rebound, Dongtai, there are many single under negotiation, he believes the second half than the first half.

Pick to | this article describes the etching machine, and transmit, swinging and nozzle, etc of major structural change and etching. The influence of efficiency Meanwhile introducing vacuum etching machine structure and function.

Keywords | etching equipment, Teleport, Swinging and nozzle, Vacuum etching machine.

Will coated aluminum plate surface by chemical etching remove don"t need copper conductor, leaving need copper conductor formation, this circuit patterns minus method technology is the current PCB machining mainstream. On copper realize chemical etching is key etching solution, etching equipment and etching operating conditions. Etching solution are now using hydrochloric acid chloride copper and copper etching fluid, and chloride with chlorinated copper and ammonia chloride copper etching of alkaline fluid for the mainstream, this aspect in the thorough improvement is to improve the etching solution etching rate, stability and recycled. Etching operating conditions is of temperature, pressure, time and solution concentration parameters of control, makes etching process in the best state. Etching equipment revolves around the production efficiency, etching speed and etching uniformity and continuous improvement, now see equipment at the change and characteristics. Now the mainstream is horizontal transmission gush to drench type, and due to spray structural differences also have different effects.
Etching equipment improvement, mainly embodies in transmission mode, spray way, the purpose of which is to improve the production efficiency, etching speed and etching uniformity.

A, plate teleport: fixed, ShuiPingShi, vertical type

Reviewing the development of equipment, the earliest etching is only an etching liquid trough or cylinder, deposited the etching fluid, copper clad hang leaching solution inside remove unprotected copper; Then make etching liquid agitation or board swings, slightly improve etching speed. Thereafter, the etching liquid trough is among a root nozzle, bat vertical put in the tub, the centrifugal force of rotating nozzle around the solution to realize parctical splash etching copper. Because board fixed placed in a groove, artificially put plate and take board efficiency low, and labor intensity. This kind of condition processing line width/spacing pieces in 0.5 mm above.
Then adopts horizontal transfer board, pump solution to the nozzle spray solution, the initial still didn"t use nozzle, adoption of plastic pipe open holes or gaps spray out solution, less pressure. After further develop into the nozzle and swinging structure.
Transmit the carrier of bearing board level was in woven plastic mesh belt, by etching machine two roller rotation drive plastic nets mobile board on the Internet after motionless. This mesh belt transmission of advantage, suitable for all kinds of size (the length, width and thickness) board and flexible board etching, its shortcoming is only single etching, double panel are subject to flap second etching. For while etching, instead can double roller transmitted, such as roller advance, bat above gap can spray solution on board. The roll shaft rotation, carrying rollers are driven by chain or gear drive, relative to character gear transmission stable and reliable. Because transmission roller clearance between, can make small size plate and soft board cannot transmit, this is about to consider a twist of the density, or an additional "bridge", making small size plate with flexible plate can also transmit, existing equipments say can transmit the thinnest 25 muon m slices.
Had the vertical transmission etching machine, bat vertical hung in jig is entered in the etching etching machine room on both sides of the solution spray board. Due to the complexity and did not reflect etching equipment fine etching effect, therefore is not development. Now the mainstream is horizontal transmission spraying etching machine.

Second, spray nozzle stem or mobile

In order to make the solution can comprehensively spray to board surface every part and prompt panels, movable speed flow solution spray rod or nozzle.
The current level transmit spraying etching equipment with spray nozzle swinging rod structure have different variety. Make spray solution not fixed in a position, let the nozzle swinging. Plenty of rotating nozzle swinging ways swing nozzle Angle, have a plenty of translation nozzle mobile half-wet-half-dry, also have horizontally rotating nozzle and make the rotating spray nozzle. Nozzle swinging different ways, purpose is to improve the uniformity of etching.

Third, nozzle types

The nozzle of the structure also has a variety of styles, according to the different shapes are spurting fluid a. solid harness type, b. hollow cone, c. solid cone, d. flat fan etc, as shown in figure 1 shows. Spray liquid from the point of the effect of different shapes, solid harness type area is too small, too, in a cone-shaped area haruz roller circumstances are occluded away. Therefore more etching machine select flatten fan-shaped nozzles, the solution is sectoral and board surface vertical impact copper foil, the effect is good.
In etching solution can be mixed with a solid particles, after a specified period would cause nozzle blocking. So often should check the nozzle spray nozzle, cleaning effect is one of maintenance equipment work. Now there is a anti jams nozzle, also called self-cleaning nozzle, it is according to Bernoulli (Bernoulli) effect of the design. Daniel Bernoulli"s 18th century, a Swiss scientist, he found two slip between breeze can separate, and when the wind prayer-book would be closer to close, as figure2shows. Using this principle, the nozzle has two page sliced, when spraying pressure big when two plates between into slit forcefully spray solution, And when two plates have between sundry block, flow rate and reduce the pressure, two plates between aperture to greaten, sundry itself be wash out, so is a self-cleaning nozzle.

Four, routine equipment etching of careful line"s influence

Correctly differentiate the ground, power lines and PCB line. For example, in the power circuit power transformer subprime receive kozesnictvi negative end power with ground between anode average all then there are large capacity filter capacitance, the capacitor shells polarity symbol. Also available from three terminal voltage stabilizer pins to find the power cord and ground. Factory in PCB wiring, to prevent the excitedself, anti-jamming, generally the most wide ground copper foil setting is very large (high frequency circuit, the power grounding copper foil), the second signal copper foil aluminum narrow. In addition, in both analog and digital circuit PCB electronic products, often go up their ground apart, forming independent ground net.through introducing, it also can be used as the basis of recognize. 5. To avoid components pin connections to the wiring diagram too cross thrust, cause had painted figure desultorily, power source and ground can use large terminals with grounding mark symbol. If the component is more, still can separate each unit circuit, and then draw together. 6. Sketching, recommend use transparent draw with colour pen drawings, ground wire, cable, signal lines will, components, etc. According to the color classification draw When amendments, gradually deepened color, make drawings intuitive eye-catching, so that analyzes the circuit.

Show Time :2012-August 21-23
       Exhibition Venue: Shenzhen Convention and Exhibition Centre, Hall 2
       Exhibition city: Shenzhen
       Organizer: Creative Age