CN202475956U - Novel steel plate - Google Patents
Novel steel plate Download PDFInfo
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- CN202475956U CN202475956U CN2012200596980U CN201220059698U CN202475956U CN 202475956 U CN202475956 U CN 202475956U CN 2012200596980 U CN2012200596980 U CN 2012200596980U CN 201220059698 U CN201220059698 U CN 201220059698U CN 202475956 U CN202475956 U CN 202475956U
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Abstract
The utility model discloses a novel steel plate, which is a stepped-type steel plate that has different thicknesses in different printing areas and is designed aiming at the situation that a PCB (Printed Circuit Board) is easy to generate missing welding, insufficient tin, tin adhesion or bad icicles and the like in the manufacturing process at present. Local thickened/thinned positions of the steel plate are drilled by a chemical etching method to achieve the effect of printing different tin paste thicknesses on the steel plate, so that different requirements of a specific area module of the PCB on tin paste amount are met, missing welding or insufficient tin is effectively avoided, the tin adhesion and bad icicles situations are improved; and in addition, the novel steel plate disclosed by the utility model is simple in structure, simple in manufacturing process and easy to implement, effectively improves the welding stability and the yield of PCBs and is beneficial to increase of yield and production efficiency of enterprises.
Description
Technical field
The utility model relates to electronics assembling industry, specifically is a kind of new steel plate of notch cuttype.
Background technology
Progress at full speed along with world technology; At present, in the prior art electronic product to miniaturization and multifunction development, short and small frivolous be global main flow trend; So printed circuit board (PCB) is high precision int more and more also, these manufacturing works to the electronic product part have proposed strong challenge.At present in electronics assembling industry; The SMT technology has become main flow; Precision instrument makes to Paste Solder Printing Process and also increasingly high to the steel plate designing requirement that to the high welding quality requirement of wiring board good perforate design can promote typography backflow ability and quality.
Summary of the invention
The technical purpose of the utility model is the drawback that overcomes prior art, provides a kind of and can satisfy the pcb board diverse location to the different new steel plate of tin cream amount demand.
The technical scheme of the utility model is:
A kind of new steel plate comprises and makes the steel disc that steel plate is used that it is characterized in that: said steel plate comprises two or more opening areas with different-thickness.
Further technical scheme comprises:
Said zone comprises the root thickness zone and the more than one thickening/weakened region of steel plate.
To particular components, said steel plate is thicker region at the position of opening of corresponding pcb board welding inductance with respect to root thickness, can be made as two-sided thicker region.
As preferably, said steel disc is the SUS304H steel, and hardness is high, and is nonmagnetic, corrosion-resistant.
The manufacture craft of above-mentioned new steel plate comprises the opening step of steel plate it is characterized in that the step of said perforate comprises:
Step S1: design the position of opening of steel plate, coated feel luminescent material on steel plate is attached to the exposure film that designs printed pattern on the steel plate zone to be processed, makes public, and the photosensitive material that is coated in the non-machining area of steel plate is solidified;
Step S2: the steel plate to after the exposure carries out development operation, makes on the steel plate and is not dissolved through solution by the photosensitive material of photocuring, and the opening area of treating on the steel plate is exposed;
Step S3: the steel plate after will developing is put into the equipment of acid etching liquid medicine and is processed, and after treating that opening area reaches the goal-setting hole shape, removes photosensitive material, cleans steel plate;
The pattern area of corresponding opening area deducts the lateral erosion area of etching liquid medicine on the film of exposure described in the above-mentioned steps for the target perforate graphics area on steel plate.
Further:
On said steel plate, during processing blind hole, adopt the single face etching, the product that is used for demand is only required at one side mint-mark corresponding pattern; Another side is not done etching, and in actual production, because the skin effect of etching liquid medicine; Hole after the etching is actual to be tapered, and is not to be the cylinder hole of standard;
When on said steel plate, processing through hole; Adopt two-sided etching; Treat at the steel plate upper and lower surface to make public simultaneously in the position of perforate, development and etching step, the etched position of upper and lower surface is communicated with, form through hole; With respect to the single face etching, the through hole that adopts two-sided etching and processing to come out can keep the consistency in aperture basically.
Consider the skin effect of etching liquid medicine, etching liquid medicine with the extent of corrosion of vertical direction should equate radially that to same material promptly the planar dimension in aperture is when increasing; The degree of depth in hole is also increasing, i.e. constant speed effect is therefore in the single face etching; During the design exposure film; Film pattern dimension should than practical work piece require little, the pattern diameter of corresponding steel plate opening area on the said exposure film is made as d, then:
d=D-H×K;
In the formula: D is that steel plate is treated the diameter of position of opening at surface of steel plate, and H is the degree of depth that steel plate is treated attenuate or perforate, and K is an etching coefficient.
And two-sided etching is according to the constant speed effect and the etching coefficient of liquid medicine, and figure of its exposure film also should be done corresponding adjustment, and its design principle is identical with the single face etching.
Simultaneously, this technology also can be made as the hybrid technique that comprises laser cutting and chemical etching step, with complementary length.
In the above-mentioned technology, said photosensitive material is preferably photosensitive-ink.After said steel plate machines, steel plate is fixed on the steel plate aluminium frame, the net that stretches tight that connects steel plate and steel plate aluminium frame adopts 100 purpose steel wires, and its tension force is big, good planeness, and thermal coefficient of expansion and stainless steel substrates are complementary not yielding.Stick steel plate all adopts AB glue with the glue of stretch tight net, stretch tight net and aluminium frame, and AB glue possesses big sticking strength and shear strength, and anti-solvent, high temperature resistant.
To the different position of tin cream amount demand, the utility model is through the thickening or the regional area of attenuate steel plate to pcb board, in the position of said thickening or attenuate through the method perforate of chemical etching; The tin cream thickness that steel plate is printed out in this zone is different from the tin cream amount in root thickness zone; To satisfy the requirement of PCB ad-hoc location welding to the tin cream amount, effectively avoided empty weldering or few tin bad, improve Lian Xiyu and draw sharp condition of poor; And the steel plate structure of the utility model is simple; Be easy to make, its technology is also easy to implement, and its perforate has shape precision preferably; Effectively improve the stability and the welding quality of pcb board welding, helped improving the production efficiency and the economic benefit of enterprise.
Description of drawings
Fig. 1 is the steel plate structure sketch map of local thickening;
Fig. 2 is the etching front spring structural representation of coated feel luminescent material;
Fig. 3 is the etched steel plate structure sketch map of single face;
Fig. 4 is the structural representation of single face etching blind hole;
Fig. 5 is the structural representation of two-sided etching vias.
Embodiment
For technical scheme, technical purpose and the technical characterictic of illustrating the utility model, the utility model is done further elaboration below in conjunction with accompanying drawing and embodiment.
A kind of new steel plate; The steel disc of the preferred SUS304H of employing is made; Steel plate after completing comprises two or more opening areas with different-thickness, makes steel plate present notch cuttype, and above-mentioned zone comprises the root thickness zone and the more than one thickening/weakened region of steel plate.
As shown in Figure 1; Certain particular components inductance is eaten the tin amount and is required 100% (increase reliability); The mode of local thickening is adopted in the zone of steel plate perforate, with the two-sided thickening in inductance position, is increased to the thickness of 0.25mm from the root thickness of 0.13mm; The degree of depth that adds deep opening is to increase the number to be printed of this position tin cream.
And for example; To the 0.4pitch assembly,, satisfy the flakiness ratio of steel plate open design in order to promote stripping result (impressionability)>1.5; Area than 0.66 specification requirement, can be through drawing sharp bad to improve printing Lian Xiyu steel plate regional area (ad-hoc location) attenuate.Like particular components 0.4 pitch Micro BGA, be to promote stripping result, the steel plate perforate adopts the mode of local reduction with Micro BGA printing surface attenuate, is thinned to 0.08mm from the whole root thickness 0.12mm of steel plate.
To shown in Figure 5, the manufacture craft of above-mentioned steel plate comprises the opening step of steel plate like Fig. 2, and said opening step is specially:
Step S1: design the position of opening of steel plate 1, on steel plate, be coated with and be covered with photosensitive-ink 2, the exposure film that designs printed pattern is attached on the steel plate zone to be processed, make public, the photosensitive material that is coated in steel plate 1 non-machining area is solidified;
Step S2: the steel plate 1 to after the exposure carries out development operation, makes on the steel plate 1 and is not dissolved through solution by the photosensitive-ink of photocuring, and the opening area 3 of treating on the steel plate is exposed;
Step S3: the steel plate after will developing is put into the equipment of acid etching liquid medicine and is processed, and after treating that opening area reaches the goal-setting hole shape, removes photosensitive-ink, cleans steel plate;
The pattern area of corresponding opening area deducts the lateral erosion area of etching liquid medicine on the film of exposure described in the above-mentioned steps for the target perforate graphics area on steel plate.
On said steel plate, during processing blind hole, adopt the single face etching;
Processing is adopted two-sided etching during through hole on said steel plate, treats at the steel plate upper and lower surface to make public simultaneously in the position of perforate, development and etching step, and the etched position of upper and lower surface is communicated with, and forms through hole.
In the single face etching, as shown in Figure 3, pattern 2 diameters of corresponding steel plate opening area are made as d on the said exposure film:
d=D-H×K;
In the formula: D is that steel plate is treated the diameter of position of opening at surface of steel plate, and H is the degree of depth that steel plate is treated attenuate or perforate, and K is an etching coefficient.
On the basis of adopting the chemical etching perforate, the utility model also can adopt the method for laser cutting further to process steel plate.
After said steel plate machines, steel plate is fixed on the steel plate aluminium frame, the net that stretches tight that connects steel plate and steel plate aluminium frame adopts 100 purpose steel wires, and stick steel plate preferably adopts AB glue with the glue of stretch tight net, stretch tight net and aluminium frame.
More than show and described basic principle of the utility model and the advantage of principal character and the utility model.The technical staff of the industry should understand; The utility model is not restricted to the described embodiments; The principle of describing in the foregoing description and the specification that the utility model just is described; 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 variations and improvement all fall in the utility model scope that requires protection.The utility model requires protection range to be defined by appending claims and equivalent thereof.
Claims (5)
1. a new steel plate comprises and makes the steel disc that steel plate is used, and it is characterized in that: said steel plate comprises two or more opening areas with different-thickness.
2. a kind of new steel plate according to claim 1 is characterized in that: said zone comprises the root thickness zone and the more than one thickening/weakened region of steel plate.
3. a kind of new steel plate according to claim 2 is characterized in that: said steel plate is thicker region at the position of opening of corresponding pcb board welding inductance with respect to root thickness.
4. a kind of new steel plate according to claim 3 is characterized in that: said steel plate is two-sided thicker region at the position of opening of corresponding pcb board welding inductance.
5. according to the described a kind of new steel plate of arbitrary claim among the claim 1-4, it is characterized in that:
Said steel disc is the SUS304H steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200596980U CN202475956U (en) | 2012-02-23 | 2012-02-23 | Novel steel plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200596980U CN202475956U (en) | 2012-02-23 | 2012-02-23 | Novel steel plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202475956U true CN202475956U (en) | 2012-10-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200596980U Expired - Fee Related CN202475956U (en) | 2012-02-23 | 2012-02-23 | Novel steel plate |
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| Country | Link |
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| CN (1) | CN202475956U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102595805A (en) * | 2012-02-23 | 2012-07-18 | 昆山元崧电子科技有限公司 | Novel steel plate and manufacturing process of novel steel plate |
| CN103009897A (en) * | 2012-12-05 | 2013-04-03 | 深圳市兴达线路板有限公司 | Method of fabricating advertisement words |
| CN107148164A (en) * | 2017-06-16 | 2017-09-08 | 淳华科技(昆山)有限公司 | Two-sided etching steel mesh and its manufacture craft |
-
2012
- 2012-02-23 CN CN2012200596980U patent/CN202475956U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102595805A (en) * | 2012-02-23 | 2012-07-18 | 昆山元崧电子科技有限公司 | Novel steel plate and manufacturing process of novel steel plate |
| CN103009897A (en) * | 2012-12-05 | 2013-04-03 | 深圳市兴达线路板有限公司 | Method of fabricating advertisement words |
| CN103009897B (en) * | 2012-12-05 | 2015-04-15 | 深圳市兴达线路板有限公司 | Method of fabricating advertisement words |
| CN107148164A (en) * | 2017-06-16 | 2017-09-08 | 淳华科技(昆山)有限公司 | Two-sided etching steel mesh and its manufacture craft |
| CN107148164B (en) * | 2017-06-16 | 2019-05-14 | 淳华科技(昆山)有限公司 | Two-sided etching steel mesh and its manufacture craft |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121003 Termination date: 20160223 |