CN107872928A - A kind of LED module copper post, copper post pad, the welding method of web plate and copper post - Google Patents
A kind of LED module copper post, copper post pad, the welding method of web plate and copper post Download PDFInfo
- Publication number
- CN107872928A CN107872928A CN201711236833.8A CN201711236833A CN107872928A CN 107872928 A CN107872928 A CN 107872928A CN 201711236833 A CN201711236833 A CN 201711236833A CN 107872928 A CN107872928 A CN 107872928A
- Authority
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- China
- Prior art keywords
- copper post
- pad
- web plate
- diameter
- led module
- 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.)
- Pending
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 112
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 112
- 239000010949 copper Substances 0.000 title claims abstract description 112
- 238000003466 welding Methods 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 23
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims abstract description 27
- 229910000679 solder Inorganic materials 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 238000005476 soldering Methods 0.000 claims description 3
- 238000012795 verification Methods 0.000 claims description 3
- 230000000717 retained effect Effects 0.000 claims description 2
- 230000008569 process Effects 0.000 abstract description 9
- 239000006071 cream Substances 0.000 abstract description 8
- 230000004048 modification Effects 0.000 abstract description 2
- 238000012986 modification Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 7
- 230000009286 beneficial effect Effects 0.000 description 6
- 238000007667 floating Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 206010068052 Mosaicism Diseases 0.000 description 2
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 2
- 235000011613 Pinus brutia Nutrition 0.000 description 2
- 241000018646 Pinus brutia Species 0.000 description 2
- 230000009194 climbing Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 210000003765 sex chromosome Anatomy 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
- H05K3/32—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
- H05K3/34—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by soldering
- H05K3/341—Surface mounted components
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
- H05K2201/10007—Types of components
- H05K2201/10174—Diode
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electric Connection Of Electric Components To Printed Circuits (AREA)
Abstract
The invention provides the welding method of a kind of LED module copper post, copper post pad, web plate and copper post, original manual welding pattern is changed to machine operation, web plate on Aided design pad used in tin cream simultaneously, solve the copper post brought by process modifications climb tin highly control, tin and the problems such as weld steadiness on pad.Wherein copper post includes integrally formed main body and weld part, and the weld part is arranged on the bottom of the main body, and the diameter of the weld part is more than the diameter of the main body；The weld part includes protection platform, middle waist and the platform that climbs being sequentially connected；Suitable for the annular pad of above-mentioned copper post；Suitable for the trisection web plate of above-mentioned pad and the welding process flow of copper post.
Description
Technical field
The present invention relates to LED module manufacturing field, more particularly to a kind of LED module copper post, copper post pad, web plate and
The welding method of copper post.
Background technology
There is a point module shipment mode in LED display at present, module shipment mode is related to copper post welding sequence.Traditional work
Process be after LED faces mount complete examine OK after carry out copper post manual welding, due to the supporting copper post quantity of one piece of module compared with
More and need by hand to insert copper post in PCB positioning holes, above phenomenon causes efficiency low, and personnel cost is high, welding effect
It is unstable.
The content of the invention
, will be original the invention provides the welding method of a kind of LED module copper post, copper post pad, web plate and copper post
Manual welding pattern be changed to machine operation, while the web plate on Aided design pad used in tin cream, solve because technique is repaiied
Change the copper post brought climb tin highly control, on pad tin and welding steadiness the problems such as.
To achieve the above object, technical solution of the present invention is：
A kind of LED module copper post, including integrally formed main body and weld part, the weld part are arranged on the main body
Bottom, the diameter of the weld part is more than the diameter of the main body；The weld part includes protection platform, the middle waist being sequentially connected
And the platform that climbs, the protection platform and the middle waist are cylinder, and the top and the bottom of the main body of the protection platform connect
Connect and have a diameter larger than the diameter of the middle waist；The platform that climbs is a round platform, and the diameter of the round platform top surface with it is described in
The diameter of waist is identical, and the diameter of the round platform bottom surface is identical with the diameter of the protection platform, i.e., described round platform bottom is solder side,
The side slope of the round platform forms scolding tin and climbed face.
Further, the copper post solder side bottom centre is fixed with alignment pin.
Further, the main center offers mounting hole, and the body top posts detachable film.
Further, the copper post is packed using carrier band.
A kind of LED module copper post pad, it is applied to copper post described above, and the pad is annular, the annulus
The center position corresponding with the copper post alignment pin offers positioning hole；The internal diameter of the annular pad is less than the copper post
External diameter, external diameter be more than the copper post external diameter.
A kind of LED module copper post pad web plate, it is applied to copper post pad described above, and the web plate includes three
Isometric sector open, three sector opens enclose an annular opening, stayed between adjacent two sector opens
There is rib.
Further, the width of each rib is identical.
Further, the web plate internal diameter is less than the pad internal diameter, and the web plate external diameter is less than the pad external diameter.
A kind of welding method of LED module copper post, comprises the following steps：
(1) check whether web plate model is correct, check web plate opening clean situation, after confirming OK, web plate is installed and fixed
On the printer, print routine is mixed up；
(2) copper post braid charging tray is arranged on charging tray placement vehicle, the actions such as its feeding, splicing adjusted after placing
It is whole, after the completion of then carry out debugging mounting position and the degree of accuracy to chip mounter, can then set automatic attachment copper post after debugging OK；
(3) after the completion of above-mentioned adjustment and installation, then operation is carried out, the PCB for the attachment that need to be printed is placed on up and down in trigger,
After placement, start play button, upper and lower trigger then carries out pcb board transmission work, is printed successively, pastes element and attachment copper
Post；
(4) by conveyor chain by card power supply seat, toggle switch after the completion of mounting；
(5) after the completion of plug-in unit, flow at automatic pressing copper post tool, by sensing recognition and verification, confirm that pcb board flows into branch
The lower mould opening position of support, by vertical motion, supports pcb board, is acted by upper molded plate, downward stroke, contact copper post, then
Sensing instruction, upper and lower mould return, and transmission drives PCB to flow into Reflow Soldering welding, and welding performance is checked after the completion of welding, such as without exception
Carry out next procedure production.
From the above-mentioned description of this invention, compared to the prior art, the invention has the advantages that：
First, copper post, copper post pad and web plate of the invention are to realize automated production and design, and whole flow process is effective
Solution personnel weld manually, and personnel place copper post by hand, and personnel cost is high, personnel's welding quality wild effect, greatly promotes
Efficiency and quality..
2nd, copper post of the present invention sets the platform that climbs, and is advantageous to climb tin in tin cream welding process, and it is stable to solve copper post firm welding
Property, and tin is uniformly climbed, floating height is reduced, while protection platform is set, prevent transition from climbing tin and influenceing product appearance and performance.
3rd, copper post solder side bottom centre of the present invention is fixed with alignment pin.So that matching somebody with somebody between copper post and pcb board
Close and matched somebody with somebody from pine before and can be changed to gap, copper post firm sex chromosome mosaicism floating high beneficial to reducing.
4th, the present invention is because the copper post is using carrier band packaging.Adapt it to automate paster board, meanwhile, in copper post
Surface is provided with film, and the effect of film is advantageous to suction, during board adsorbs copper post, can pushed suction copper post
Dynamics applies, and to greatest extent can mount copper post in place.
5th, web plate forms trisection opening and is advantageous to tin cream uniform fold pad in the present invention.
6th, the scolding tin disk that the present invention is formed after screen printing is located at interior of bond pads, its outer edge and pad outer edge phase
Inscribe, its inside edge are inwardly extended compared to pad inside edge；The structure uniformly shifts overlay capacity beneficial to solder(ing) paste, can be effective
Avoid tin cream from producing accumulating amount, avoid floating height.Using molecule activity physical property, tin amount is climbed inside and outside formation, can effective shape
Paired copper post surface climbs tin amount and is beneficial to weld full, fastness.
7th, increase automates copper post flattening equipment in technological process in the present invention, after the completion of preceding working procedure attachment, PCB
Plate is flowed into copper post flattening equipment position and removed, and senses pcb board in place by infrared inductor, and lifting mechanism, which rises, holds PCB
Plate, four margin positions, upper mould are then acted, and downward stroke flattens copper post, it is ensured that copper post attachment is smooth.
Brief description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, forms the part of the present invention, this hair
Bright schematic description and description is used to explain the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is the structural representation of copper post of the present invention；
Fig. 2 is the structural representation of pad of the present invention；
Fig. 3 is the structural representation of web plate of the present invention；
Fig. 4 is the schematic diagram after copper post of the present invention, pad, web plate combination.
Embodiment
In order that technical problems, technical solutions and advantages to be solved are clearer, clear, tie below
Drawings and examples are closed, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only used
To explain the present invention, it is not intended to limit the present invention.
Referring to figs. 1 to Fig. 3, a kind of LED module copper post, including integrally formed main body 1 and weld part 2, the welding
Portion 2 is arranged on the bottom of the main body 1, and the diameter of the weld part 2 is more than the diameter of the main body 1；The weld part 2 includes
Protection platform 20, middle waist 21 and the platform 22 that climbs being sequentially connected, the protection platform 20 and the middle waist 21 are cylinder, described
The top of protection platform 20 is connected with the bottom of the main body 1 and has a diameter larger than the diameter of the middle waist 21；The platform 22 that climbs
For a round platform, and the diameter of the round platform top surface is identical with the diameter of the middle waist 21, the diameter of the round platform bottom surface with it is described
Protect the diameter of platform 20 identical, i.e., described round platform bottom be solder side, and the side slope formation scolding tin of the round platform climbs face.Copper
Post sets the platform 22 that climbs, and is advantageous to climb tin in tin cream welding process, solves copper post firm welding stability, and uniformly climbs tin, drops
Low floating height, while protection platform 20 is set, prevent transition from climbing tin and influenceing product appearance and performance；The copper post solder side bottom centre
It is fixed with alignment pin 3.So that the cooperation between copper post and pcb board is matched somebody with somebody from pine before and can be changed to gap, beneficial to drop
Low floating height, the firm sex chromosome mosaicism of copper post；The center of main body 1 offers mounting hole, and detachable film is posted at the top of main body 1
4.Setting film 4 to be advantageous to, suction nozzle is stable to be mounted, and unstable, precision inaccuracy problem is mounted before solving；Due to the copper post
Packed using carrier band.Adapt it to automate paster board, meanwhile, copper post upper surface is provided with film 4, and the effect of film 4 is favourable
During suction, board absorption copper post, surging under suction copper post can be applied, to greatest extent can pasted copper post
It is attached to position.
A kind of LED module copper post pad web plate 5, it is applied to copper post pad 6 described above, and the web plate includes three
The isometric sector open 50 of bar, three sector opens 50 enclose an annular opening, adjacent two sector opens
Being retained between 50 has rib 51.The width of each rib 51 is identical.It is equal that the trisection opening being consequently formed is advantageous to tin cream
Even covering pad.
A kind of LED module copper post pad 6, it is applied to copper post described above, and the pad 6 is annular, the circle
The ring center position corresponding with the copper post alignment pin 3 offers positioning hole 60；The internal diameter of the annular pad 6 is less than institute
The external diameter of copper post is stated, external diameter is more than the external diameter of the copper post.The internal diameter of web plate 5 is less than the internal diameter of pad 6, the web plate 5
External diameter is less than the external diameter of pad 6.It is open outer as preferable scheme, the overall diameter 6.5 of pad 6, copper post overall diameter 5.5, web plate 5
Diameter opening is 6.2mm, the interior diameter 4mm of pad 6, then the interior diameter that is open of web plate 5 is arranged to 3, can be scaled as described above
Ratio opening, opening mode form 3 deciles.Rib 51 is arranged to 0.25~0.3.In this structure, formed after the printing of web plate 5
Scolding tin disk is located inside pad 6, and its outer edge and the outer edge phase inscribe of pad 6, its inside edge are inside compared to the inside edge of pad 6
Extension；The structure uniformly shifts overlay capacity beneficial to solder(ing) paste, can effectively avoid tin cream from producing accumulating amount, avoids floating height.Can profit
With molecule activity physical property, tin amount is climbed inside and outside formation, can be effectively formed and tin amount is climbed to copper post surface be beneficial to weld full, jail
Solidity.
A kind of welding method of LED module copper post, comprises the following steps：
(1) check whether the model of web plate 5 is correct, check the opening clean situation of web plate 5, after confirming OK, web plate 5 is installed solid
Determine on the printer, to mix up print routine；
(2) copper post braid charging tray is arranged on charging tray placement vehicle, the actions such as its feeding, splicing adjusted after placing
It is whole, after the completion of then carry out debugging mounting position and the degree of accuracy to chip mounter, can then set automatic attachment copper post after debugging OK；
(3) after the completion of above-mentioned adjustment and installation, then operation is carried out, the PCB for the attachment that need to be printed is placed on up and down in trigger,
After placement, start play button, upper and lower trigger then carries out pcb board transmission work, is printed successively, pastes element and attachment copper
Post；
(4) by conveyor chain by card power supply seat, toggle switch after the completion of mounting；
(5) after the completion of plug-in unit, flow at automatic pressing copper post tool, by sensing recognition and verification, confirm that pcb board flows into branch
The lower mould opening position of support, by vertical motion, supports pcb board, is acted by upper molded plate, downward stroke, contact copper post, then
Sensing instruction, upper and lower mould return, and transmission drives PCB to flow into Reflow Soldering welding, and welding performance is checked after the completion of welding, such as without exception
Carry out next procedure production.
Whole flow process effectively solves personnel and welded manually, and personnel place copper post by hand, and personnel cost is high, personnel weld product
Matter wild effect, greatly promotes efficiency and quality.The increase automation copper post flattening equipment in technological process, preceding working procedure patch
After the completion of dress, pcb board is flowed into copper post flattening equipment position and removed, and senses pcb board in place by infrared inductor, lifting mechanism
Pcb board, four margin positions are held in rising, and upper mould is then acted, and downward stroke flattens copper post, it is ensured that copper post attachment is smooth.
The preferred embodiments of the present invention have shown and described in described above, as previously described, it should be understood that the present invention is not office
Be limited to form disclosed herein, be not to be taken as the exclusion to other embodiment, and available for various other combinations, modification and
Environment, and can be changed in the scope of the invention is set forth herein by the technology or knowledge of above-mentioned teaching or association area
It is dynamic., then all should be appended by the present invention and the change and change that those skilled in the art are carried out do not depart from the spirit and scope of the present invention
In scope of the claims.
Claims (9)
- A kind of 1. LED module copper post, it is characterised in that：Including integrally formed main body and weld part, the weld part is set In the bottom of the main body, the diameter of the weld part is more than the diameter of the main body；The weld part includes what is be sequentially connected Platform, middle waist and the platform that climbs are protected, the protection platform and the middle waist are cylinder, the top of the protection platform and the master The bottom of body connects and has a diameter larger than the diameter of the middle waist；The platform that climbs is a round platform, and the round platform top surface is straight Footpath is identical with the diameter of the middle waist, and the diameter of the round platform bottom surface is identical with the diameter of the protection platform, i.e., described round platform bottom Portion is solder side, and the side slope of the round platform forms scolding tin and climbed face.
- A kind of 2. LED module copper post as claimed in claim 1, it is characterised in that：The copper post solder side bottom centre consolidates Surely it is provided with alignment pin.
- A kind of 3. LED module copper post as described in any one of claim 1 or 2, it is characterised in that：The main center opens up There is mounting hole, the body top posts detachable film.
- A kind of 4. LED module copper post as claimed in claim 3, it is characterised in that：The copper post is packed using carrier band.
- 5. a kind of LED module copper post pad, it is applied to copper post described in claim any one of 1-4, it is characterised in that：Institute It is annular to state pad, and the circle ring center position corresponding with the copper post alignment pin offers positioning hole；The annulus The internal diameter of shape pad is less than the external diameter of the copper post, and external diameter is more than the external diameter of the copper post.
- 6. a kind of LED module copper post pad web plate, it is applied to the copper post pad described in claim 5, it is characterised in that：Institute Stating web plate includes three isometric sector opens, and three sector opens enclose an annular opening, described in adjacent two Being retained between sector open has rib.
- A kind of 7. LED module copper post pad web plate as claimed in claim 6, it is characterised in that：The width of each rib Spend identical.
- A kind of 8. LED module copper post pad web plate as claimed in claim 7, it is characterised in that：The web plate internal diameter is less than The pad internal diameter, the web plate external diameter are less than the pad external diameter.
- 9. a kind of welding method of LED module copper post, it is characterised in that comprise the following steps：(1) check whether web plate model is correct, check web plate opening clean situation, after confirming OK, web plate is fixed on print On brush machine, print routine is mixed up；(2) copper post braid charging tray is arranged on charging tray placement vehicle, the actions such as its feeding, splicing is adjusted after placing, After the completion of then carry out debugging mounting position and the degree of accuracy to chip mounter, can then set automatic attachment copper post after debugging OK；(3) after the completion of above-mentioned adjustment and installation, then operation is carried out, the PCB for the attachment that need to be printed is placed on up and down in trigger, placed Afterwards, play button is started, upper and lower trigger then carries out pcb board transmission work, is printed successively, pastes element and attachment copper post；(4) by conveyor chain by card power supply seat, toggle switch after the completion of mounting；(5) after the completion of plug-in unit, flow at automatic pressing copper post tool, by sensing recognition and verification, confirm that pcb board is flowed under support Mould opening position, by vertical motion, pcb board is supported, is acted by upper molded plate, downward stroke, contacted copper post, then sense Instruction, upper and lower mould return, and transmission drives PCB to flow into Reflow Soldering welding, and welding performance is checked after the completion of welding, such as progress without exception Next procedure produces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711236833.8A CN107872928A (en) | 2017-11-30 | 2017-11-30 | A kind of LED module copper post, copper post pad, the welding method of web plate and copper post |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711236833.8A CN107872928A (en) | 2017-11-30 | 2017-11-30 | A kind of LED module copper post, copper post pad, the welding method of web plate and copper post |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107872928A true CN107872928A (en) | 2018-04-03 |
Family
ID=61755070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711236833.8A Pending CN107872928A (en) | 2017-11-30 | 2017-11-30 | A kind of LED module copper post, copper post pad, the welding method of web plate and copper post |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107872928A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109530839A (en) * | 2018-12-27 | 2019-03-29 | 苏州市力发电子有限公司 | A kind of connecting line tin sticky technique |
| CN109788640A (en) * | 2019-03-21 | 2019-05-21 | 浪潮商用机器有限公司 | A kind of pcb board and a kind of preparation method of pcb board |
| CN111465183A (en) * | 2020-03-30 | 2020-07-28 | 宁波市富来电子科技有限公司 | PCB with flat welding spots and welding method |
| CN112837630A (en) * | 2021-03-04 | 2021-05-25 | 深圳市光祥科技股份有限公司 | LED module and LED display screen |
| CN114515903A (en) * | 2022-03-04 | 2022-05-20 | 中国电子科技集团公司第三十八研究所 | Laser column planting method for CCGA high-lead welded column |
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| CN206433328U (en) * | 2017-02-15 | 2017-08-22 | 广州加杰精密机械有限公司 | A kind of pins arranging machine |
| CN107172826A (en) * | 2017-06-15 | 2017-09-15 | 深圳市泰和安科技有限公司 | A kind of preparation method of the printed circuit board (PCB) with copper post |
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| CN109788640A (en) * | 2019-03-21 | 2019-05-21 | 浪潮商用机器有限公司 | A kind of pcb board and a kind of preparation method of pcb board |
| CN111465183A (en) * | 2020-03-30 | 2020-07-28 | 宁波市富来电子科技有限公司 | PCB with flat welding spots and welding method |
| CN111465183B (en) * | 2020-03-30 | 2023-03-17 | 宁波市富来电子科技有限公司 | PCB with flat welding spots and welding method |
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| CN114515903A (en) * | 2022-03-04 | 2022-05-20 | 中国电子科技集团公司第三十八研究所 | Laser column planting method for CCGA high-lead welded column |
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