CN203032067U - Steel plate used for printing process of printed circuit board - Google Patents
Steel plate used for printing process of printed circuit board Download PDFInfo
- Publication number
- CN203032067U CN203032067U CN 201220659653 CN201220659653U CN203032067U CN 203032067 U CN203032067 U CN 203032067U CN 201220659653 CN201220659653 CN 201220659653 CN 201220659653 U CN201220659653 U CN 201220659653U CN 203032067 U CN203032067 U CN 203032067U
- Authority
- CN
- China
- Prior art keywords
- steel plate
- circuit board
- printed circuit
- printing process
- silk screen
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Printing Plates And Materials Therefor (AREA)
Abstract
The utility model relates to a steel plate used for a printing process of a printed circuit board. The steel plate used for the printing process of the printed circuit board comprises a steel plate frame. A silk screen is arranged in the interior of the steel plate frame. A steel disc is arranged on the silk screen. The steel disc contains a niobium element, and is used for mouth processing of components with superfine space and being precise and small through liquid oxygen laser cutting and ultrasonic polishing technical process to meet the requirements of tin content in printing and solderability of products. Printing technology backflow ability and quality are improved, the problems that missing solder, granular solder and badness occur in high-end products are solved, maintenance cost is reduced, yield and production efficiency are improved, and soldering stability is improved.
Description
Technical field
The utility model relates to part field, and what be specifically related to is a kind of steel plate of printed circuit board (PCB) printing process.
Background technology
At present, along with the high-tech develop rapidly in the world, electronic product is to miniaturization and multifunction development, short and small frivolous be global main flow trend, so also high precision int more and more of printed circuit board (PCB).The SMT technology has become main flow, and the extra small assembly of ultra fine-pitch and size uses more and morely, and Paste Solder Printing Process is proposed strong challenge. and also more and more higher to the requirement of steel plate design and making simultaneously.Steel plate plays crucial effects to quality, the efficient that SMT produces, and the template of high-quality can promote the quality of SMT technology.
The utility model content
At the deficiency that exists on the prior art, it is the steel plate that is to provide a kind of printed circuit board (PCB) printing process that the utility model provides purpose, and at ultra fine-pitch, small component, the printing difficult product of tin down has application.
To achieve these goals, the utility model is to realize by the following technical solutions:
The steel plate of a kind of printed circuit board (PCB) printing process of the present utility model comprises the steel plate frame, and steel plate frame inside arranges silk screen, and steel disc is placed on the silk screen.
Preferably, bonding by glue between described steel disc and the silk screen.
Preferably, described steel plate frame is steel plate aluminium frame.
Further, contain the niobium element in the described steel disc, and through liquid oxygen laser cutting and ultrasonic polishing technical finesse.
The beneficial effects of the utility model are: the steel plate for the printed circuit board (PCB) printing process of the present utility model, a kind of form technology that be used for to solve tin problem under the assembly opening that PCB goes up ultra fine-pitch and accurate small component and produce is the specially treated of steel disc material and cutting aspect with the difference of common templates.
Description of drawings
Fig. 1 is the structural representation of the steel plate for the printed circuit board (PCB) printing process of the present utility model.
Among the figure: 1, steel plate frame, 2, silk screen, 3, steel plate, 4, glue.
The specific embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with the specific embodiment, further set forth the utility model.
In conjunction with shown in Figure 1, a kind of steel plate for the printed circuit board (PCB) printing process of the present utility model comprises steel plate frame 1, and steel plate frame 1 inside arranges silk screen 2, and steel disc 3 is placed on the silk screen 2, and is bonding by glue 4 between steel disc 3 and the silk screen 2.The steel plate frame is preferably steel plate aluminium frame.
Further, contain the niobium element in the steel disc 3, and through liquid oxygen laser cutting and ultrasonic polishing technical finesse.
Wherein, the quality of steel disc material and steel plate service life, printing effect have certain degree of influence, select FG special substance steel disc for use, have hardness height, nonmagnetic, corrosion-resistant, contain the characteristics of Nb element.
Adopt FG special process steel plate, can rationally control the precision of the hole wall of small component opening, flatness and the burr situation on cutting surface, the product fraction defective that produces is reduced.Be the specially treated of steel disc material and cutting aspect with the difference of common templates.
What the making of FG special process template was taked is that liquid oxygen laser cutting+ultrasonic polishing is handled.
What the making of common moment steel plate was taked is laser laser cutting+polishing electropolishing, and difference is compared as follows:
1. add liquid oxygen during laser cutting can prevent the steel disc laser cutting time because the unstability of the opening that high temperature causes, can guarantee precision and surperficial flatness and the burr situation of cutting of steel mesh perforate hole wall;
2. electropolishing can also have steel plate thickness to cause slight influence when carrying out polishing to the smoothness on steel disc surface, and ultrasonic polishing then can avoid such situation to take place comparatively speaking.
Silk screen, the net that stretches tight that namely connects steel plate aluminium frame and steel disc is selected 100 order steel wires for use, and the big flatness of tension force is good, and thermal coefficient of expansion is complementary not yielding with stainless steel substrates.
Glue is used for stick steel plate aluminium frame and steel disc, selects the AB glue that possesses big sticking strength and shear strength for use, and anti-solvent is high temperature resistant.
Steel disc special substance and the cutting technique of the utility model steel plate, it is bad to improve the few tin of empty weldering and printing. be applied to ultra fine-pitch or other small components etc. especially.
The special substance of the utility model steel plate and cutting technique, be used for≤printing of 0.4pitch assembly, promote stripping result and following tin amount, and satisfy tin ratio under the opening, satisfy flakiness ratio＞1.5 of steel plate opening design, area lacks tin and draws point bad than＞0.66 SPEC. improvement printing.
More than show and described basic principle of the present utility model and principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that describes in above-described embodiment and the specification just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (4)
1. a steel plate that is used for the printed circuit board (PCB) printing process comprises steel plate frame (1), it is characterized in that described steel plate frame (1) inside arranges silk screen (2), and steel disc (3) is placed on the silk screen (2).
2. the steel plate for the printed circuit board (PCB) printing process according to claim 1 is characterized in that, and is bonding by glue (4) between described steel disc (3) and the silk screen (2).
3. the steel plate for the printed circuit board (PCB) printing process according to claim 1 is characterized in that, described steel plate frame (1) is steel plate aluminium frame.
4. the steel plate for the printed circuit board (PCB) printing process according to claim 1 is characterized in that, described steel disc contains the niobium element in (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220659653 CN203032067U (en) | 2012-12-04 | 2012-12-04 | Steel plate used for printing process of printed circuit board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220659653 CN203032067U (en) | 2012-12-04 | 2012-12-04 | Steel plate used for printing process of printed circuit board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203032067U true CN203032067U (en) | 2013-07-03 |
Family
ID=48684207
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220659653 Expired - Fee Related CN203032067U (en) | 2012-12-04 | 2012-12-04 | Steel plate used for printing process of printed circuit board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203032067U (en) |
-
2012
- 2012-12-04 CN CN 201220659653 patent/CN203032067U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130703 Termination date: 20131204 |