CN109352121A - Circuit board overhauls frock - Google Patents
Circuit board overhauls frock Download PDFInfo
- Publication number
- CN109352121A CN109352121A CN201811431939.8A CN201811431939A CN109352121A CN 109352121 A CN109352121 A CN 109352121A CN 201811431939 A CN201811431939 A CN 201811431939A CN 109352121 A CN109352121 A CN 109352121A
- Authority
- CN
- China
- Prior art keywords
- circuit board
- clamping
- tool
- tooling
- heating
- 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
Links
- 238000010438 heat treatment Methods 0.000 claims abstract description 45
- 238000012360 testing method Methods 0.000 claims abstract description 28
- 238000002844 melting Methods 0.000 claims abstract description 4
- 230000008018 melting Effects 0.000 claims abstract description 4
- 238000012423 maintenance Methods 0.000 claims description 28
- 238000005485 electric heating Methods 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 6
- 238000003466 welding Methods 0.000 abstract description 5
- 229910052742 iron Inorganic materials 0.000 abstract description 3
- 239000002912 waste gas Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 description 5
- 238000011161 development Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000005476 soldering Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000012141 concentrate Substances 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006071 cream Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
-
- 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
- B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
- B23K3/08—Auxiliary devices therefor
-
- 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
- B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
-
- 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
- B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
- B23K3/08—Auxiliary devices therefor
- B23K3/087—Soldering or brazing jigs, fixtures or clamping means
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Electric Connection Of Electric Components To Printed Circuits (AREA)
Abstract
The invention discloses a circuit board overhauling tool, which comprises a tool box body, wherein an exhaust fan, a circuit board clamping device, a hot air gun, a heating device and a circuit board overhauling test tool box are arranged in the tool box body; the circuit board clamping device is used for clamping a circuit board to be overhauled; the heating device is used for heating the clamped circuit board; the hot air gun is arranged on the side wall of the tooling box through a bracket and is used for melting pins of components on the clamped circuit board; a circuit board overhauling and testing tool is placed in the circuit board testing tool box, the testing tool is used for testing the function of the circuit board, and the overhauling tool is used for disassembling or welding components on the circuit board; the exhaust fan is used for exhausting waste gas in the tool box. Utilize the frock case of this application can divide into the second grade with the heating of circuit board, at first heat the circuit board is whole through the hot plate, then when utilizing electric iron or hot-blast rifle to heat once more to the components and parts pin that needs to dismantle, required time will be very short, just can not cause the damage when components and parts are dismantled.
Description
Technical field
The present invention relates to circuit board service technique fields, and in particular to a kind of circuit board maintenance tool.
Background technique
Nowadays, people are increasing to the demand of electronic product, and the manufacture of corresponding electronic products is also more and more.Electricity
Sub- manufacturing enterprise production, processing electronic product during, can be related to electron product circuit plate debugging, program downloading,
The processes such as maintenance.In the process, need to circuit board clamping, then using electronic equipment detection circuit board performance or
Replace underproof component etc. on circuit board.
In the prior art, the component on circuit board is dismantled, is generallyd use on the table through electric iron or hot wind
The heating of one step of rifle, but since pin is too many, certain pin soldering paste have melted sometimes, and the soldering paste of other pins does not melt also
Or condensed to the cold again after melting, therefore be difficult once to dismantle component, usually make the component damage finally disassembled.
How to develop a kind of convenient to use and the tooling of damage circuit board element will not be this field skill in disassembly
Art personnel technical problem urgently to be resolved.
Summary of the invention
It is an object of the invention to provide a kind of circuit board maintenance tools, can be with dismounting circuit board, and overhaul test
And its conveniently.
For this purpose, the technical solution adopted by the present invention is that:
A kind of circuit board maintenance tool, including tooling case ontology, the tooling case ontology is interior to be equipped with exhaust fan, circuit board dress
Clamp device, heat gun, heating device and circuit board overhaul test kit；The circuit board clamping device is used for clamping Awaiting Overhaul
Circuit board；The heating device is used to heat to clamping circuit board；The heat gun is set up in tooling case by branch
On side wall, for melting the component's feet on clamping circuit board；Circuit board is placed in the testing tool for circuit board case
Maintenance and testing tool, the testing tool are used for circuit board function test, and the service kit is for disassembly or welding circuit
Component on plate；The exhaust fan is used to exclude the exhaust gas in tooling case.
Further, it is additionally provided with temperature measuring equipment in the tooling case ontology, for measuring and showing the temperature in tooling case.
The temperature in tooling case can be controlled to adjust according to the temperature that temperature measuring equipment is shown, guarantee tin cream satisfaction in a molten state when disassembly
Disassembly requires, but temperature cannot be excessively high to damage circuit board.
Further, circuit board clamping device includes two parallel bottom rails being mounted on tooling case ontology bottom plate, and two
Be slidably installed two T-type guide rails in parallel bottom rail, and two T-type guide rails are arranged in parallel and bottom rail parallel with two is vertical, every T-type
There are two clamping pieces, four clamping pieces to cooperate clamping circuit board for sliding setting on guide rail.
Further, the clamping piece includes sliding block, column and fixture block；Sliding block be set to T-type guide rail on and with T-type guide rail
It is slidably connected, column is vertically supported at the top of sliding block, and the upper end of column is slidably set with fixture block, and the side of the fixture block is set
There is arc neck.
T-type guide rail slides in bottom rail, adjusts the distance between the fixture block on two guide rails, and sliding block slides on T-type guide rail,
The distance between two fixture blocks on a guide rail are adjusted, to adapt to the clamping of various sizes of circuit board.Fixture block is sliding in column
Dynamic, the height of adjustable holding circuit board, fixture block is fixed by screws on column after being adjusted to suitable height.Sliding block and T
The cooperation of type guide rail, T-type guide rail and bottom rail cooperation, fixture block are equipped with arc neck, and circuit board can horizontal clamping or vertical as needed
Straight clamping is clamped by certain angle, and its conveniently.
Further, the heating device includes upper and lower two pieces of heating plates and the electric heating that is clamped between two heating plates
Pipe, upper and lower two pieces of heating plates are bolted, and heat release hole is evenly equipped in lower heating plate, and the top surface of upper heating plate connects sunpender,
Sunpender is suspended in the top surface of tooling case, and the heating plate is located at the surface of clamping device.After heating tube heating plate,
Heat is distributed by heating plate, and heat dissipation is uniform.
Further, the lower section of the heat gun is equipped with several hooks, and the hook is for temporarily placing the rifle of heat gun
Head and the various tools for overhauling circuit board.It is easy to operate when maintenance test.
Further, the testing tool for circuit board case is mounted on the bottom plate of tooling case ontology, is equipped in tool box more
Layer drawer.Drawer is grasped when testing for being placed with oscillograph, microcontroller development board, multimeter and service kit etc., maintenance respectively
Facilitate.
Further, the side of the tooling case is equipped with the chamber door that can be switched, and the angle of bottom four is equipped with idler wheel.Chamber door
It is closed in heating tube heating, energy conservation.Chamber door is opened when maintenance, facilitates operation.The design of idler wheel facilitates the movement of tooling case, mentions
High efficiency.
Further, the exhaust fan is set to the top surface of tooling case, and air inlet is communicated with tooling box cavity.Hot wind concentrate with
Cabinet top, top surface are arranged air draft ventilation efficiency height, exhaust fan are exported and is connect with pipeline, exhaust gas can be passed through pipeline and concentrate row
It puts or disposes.
Beneficial effects of the present invention:
1, the heating of circuit board can be divided into two steps using the tooling case of the application to carry out, first by heating plate to circuit
Plate is integrally heated, and the bulk temperature of circuit board is promoted；Then using electric iron or heat gun for the first device for needing to dismantle
Part pin heats one by one, and the time needed for pin heating will be very short, and component would not cause the damage of circuit board when dismantling.
2, circuit board is debugged using the tooling case of the application, program downloading, maintenance etc. work when, working efficiency
It is high.
Detailed description of the invention
Fig. 1 is the structural schematic diagram (removal chamber door) of the tooling case ontology of circuit board maintenance tool of the present invention.
Fig. 2 is the installation of the circuit board clamping device and circuit board maintenance test kit of circuit board maintenance tool of the present invention
Schematic diagram.
Fig. 3 is the structural schematic diagram of the clamping element of the circuit board clamping device of circuit board maintenance tool of the present invention.
Fig. 4 is the structural schematic diagram of the heating device of circuit board maintenance tool of the present invention.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing and a kind of preferred reality
Mode is applied technical solution of the present invention is clearly and completely described.
In the following description, on the basis of the orientation of the ontology of tooling case shown in Fig. 1, the top of tooling case as shown in the figure is
For "upper", on the contrary is "lower".
Embodiment 1
Refering to fig. 1, a kind of circuit board maintenance tool, including tooling case case ontology 10 and it is equipped with case intrinsic circuit board dress
Clamp device 20, heating device 30 and circuit board overhaul test kit 40.
Case ontology 10 is in rectangle, including bottom plate 11, top plate 14, both side plate 12 and a backboard 13.10 front of case ontology is equipped with
Case lid (not shown), one end of case lid and case ontology are hinged, and the other end is equipped with knob.Four angles of 10 bottom of case ontology are set
There is supporting leg 7, the bottom of supporting leg 7 is equipped with idler wheel 6.The center of top plate 14 is equipped with through-hole, and exhaust fan 1 is set to the through-hole by screw
Interior, the air inlet of exhaust fan is communicated with cabinets cavity, and the air outlet of exhaust fan communicates with the outside world, air outlet conduit connectable, is led to
The exhaust gas of discharge is transported to exhaust treatment system centralized processing, safety and environmental protection by piping.Temperature measuring equipment is equipped in case ontology 10,
Temperature measuring equipment is the prior art, and the temperature of temperature measuring equipment measurement can show that opening for backboard 13 is arranged in display screen 3 by display screen
In mouthful.The top of display screen is equipped with a fritter partition 8, and partition is arranged on overleaf plate 13 by welding, can be used for putting
Set the component disassembled when maintenance.Wherein the top of side plate 12 is equipped with hot wind gun carriage 4, places heat on hot wind gun carriage
Air pressure gun 2, heat gun are the prior art.The lower section of hot wind gun carriage 4 is equipped with is equipped at intervals with five hooks 5 side by side, for temporarily putting
Set the pipette tips of heat gun and the various tools for overhauling circuit board.Hook 5 and hot wind gun carriage 4 can be set by welding
It sets on side panel 12.
Refering to Fig. 2 and Fig. 3, circuit board clamping device 20 includes two parallel bottom rail 21, two parallel T-type guide rails 22 and four
A clamping element 23.Two parallel bottom rails 21 are by way of spot welding set on the side of the upper side of case ontology bottom plate 11, bottom rail 21
It is parallel with the short side of bottom plate 11.The bottom at the both ends of T-type guide rail 22 offers sliding slot, and sliding slot is adapted to bottom rail 21, two parallel T
Type guide rail 22 is set in two parallel bottom rails 21 by sliding slot sliding, and T-type guide rail 22 is vertically arranged with bottom rail 21.Clamping piece 23 wraps
Include sliding block 231, column 232 and fixture block 233.The central part of sliding block 231 is equipped with T-slot 2313 compatible with T-type guide rail 22, sliding
The side of block is equipped with threaded hole 2311, and threaded hole 2311 is communicated with T-slot 2313, and the top surface of sliding block is equipped with column mounting holes
2312, column mounting holes 2312 are threaded hole.The center of fixture block 233 is equipped with through-hole 2331, and side is equipped with threaded hole 2332, screw thread
Hole 2332 and through-hole 2331 penetrate through.The one side for not setting threaded hole of fixture block 233 is equipped with arc neck 2333.Column 232 is in circle
Rod-shaped, rod diameter is adapted to through-hole 2331, and the lower end of column is equipped with male threaded joint, external screw thread and column mounting holes 2312
Internal screw thread be threadedly engaged.The lower end of column 232 is threadedly coupled with sliding block 231, the upper end sliding sleeve clamping block 233 of column 232,
Fixture block and column are positioned and wearing screw in threaded hole 2332.Sliding sleeve is mounted on T-type guide rail 21 sliding block 231 two-by-two,
Sliding block is positioned with T-type guide rail by and threaded hole 2311 wears screw.
Circuit board overhauls test kit 40 and is equipped with multi-layer drawers, in the present embodiment, be equipped with altogether four layers of drawer 41,42,
43,44, it is respectively used to place oscillograph, microcontroller development board, multimeter and service kit.Oscillograph is the prior art, is used for
Test board circuit.Microcontroller development board is the prior art, is used for debugging chip program.Circuit board overhauls testing tool
Case 40 is fixedly mounted on the other side of bottom plate 11 by screw.
Refering to Fig. 4, heating device 30 includes sunpender 31, upper heating plate 32, lower heating plate 34 and electric heating tube 33.Lower heating
It is uniformly provided with heat release hole (not shown) in the plate face of plate 34, offers threaded hole 341 on four angles.Upper heating plate 32
Plate face central part be equipped with threaded hole, offer threaded hole 321 corresponding with upper heating plate on four angles.Sunpender and upper heating
Plate 32 be threadedly coupled, electric heating tube 33 be equipped with it is several, be spaced on the upper side for being fixed on lower heating plate 34 side by side by screw, on
Heating plate 32 is bolted together with lower heating plate 34 by wearing to send in corresponding threaded hole 321,341.Heating device 30
The surface on the top plate 14 of case ontology and being located at clamping circuit board is suspended on by sunpender 31.
Application method:
All parts are assembled according to FIG. 1 to FIG. 4.
Before service work, it is necessary first to which circuit board is clamping, and circuit board mean level clamping, T-type guide rail 21 is in bottom rail
It is slided on 22, sliding block 231 is slided in T-type guide rail 21, clamping dimension is adjusted, using fixture block arc neck 2333 by circuit board clamping
It is fixed.
When work, miniature exhaust fan 1 is opened, and toxic gas is collected by pipeline.When disassembly circuit board member device
When part, electric heating tube 33 is powered heated first, and heat is distributed by the heat release hole of lower heating plate 34, makes the bulk temperature of circuit board
It is promoted, at this point, display screen 3 shows Current Temperatures, when soldering paste softening, the component's feet for needing to dismantle is directed at using heat gun 2,
Different hot air gun nozzles is selected according to different types of device, the soldering paste at pin melts quickly, utilizes tool in tool box
Component is disassembled from circuit board, guarantees that circuit board and the component disassembled are intact.
When circuit board is when testing circuit, debug circuit and downloading program, electric heating tube 33 does not work, and utilizes circuit board
Oscillograph, microcontroller development board, multimeter and tool etc. in maintenance test kit 40 carry out test erector to circuit board
Make.
Not doing the part illustrated in above instructions is the prior art, or has both been able to achieve by the prior art.
Claims (9)
1. a kind of circuit board maintenance tool, including tooling case ontology, which is characterized in that be equipped with air draft in the tooling case ontology
Fan, circuit board clamping device, heat gun, heating device and circuit board overhaul test kit；The circuit board clamping device is used
In the circuit board of clamping Awaiting Overhaul；The heating device is used to heat to clamping circuit board；The heat gun passes through bracket
On the side wall of tooling case, for melting the component's feet on clamping circuit board；The testing tool for circuit board case
Interior placement circuit board maintenance and testing tool, the testing tool are used for circuit board function test, and the service kit is for tearing open
Unload or soldered circuit board on component；The exhaust fan is used to exclude the exhaust gas in tooling case.
2. circuit board maintenance tool as described in claim 1, which is characterized in that be additionally provided with thermometric dress in the tooling case ontology
It sets, for measuring and showing the temperature in tooling case.
3. circuit board maintenance tool as claimed in claim 1 or 2, which is characterized in that circuit board clamping device includes being mounted on
Two parallel bottom rails on tooling case ontology bottom plate, be slidably installed in two parallel bottom rails two T-type guide rails, two T-type guide rails
It is arranged in parallel and bottom rail parallel with two is vertical, there are two clamping piece, four clamping piece cooperations for sliding setting on every T-type guide rail
Clamping circuit board.
4. circuit board maintenance tool as claimed in claim 3, which is characterized in that the clamping piece includes sliding block, column and folder
Block；Sliding block is set on T-type guide rail and is slidably connected with T-type guide rail, and column is vertically supported at the top of sliding block, and the upper end of column can
Sliding sleeve is equipped with fixture block, and the side of the fixture block is equipped with arc neck.
5. circuit board maintenance tool as claimed in claim 1 or 2, which is characterized in that the heating device includes upper and lower two pieces
Heating plate and the electric heating tube being clamped between two heating plates, upper and lower two pieces of heating plates are bolted, in lower heating plate
It is furnished with heat release hole, the top surface of upper heating plate connects sunpender, and sunpender is suspended in the top surface of tooling case, and the heating plate is located at clamping dress
The surface set.
6. circuit board maintenance tool as claimed in claim 1 or 2, which is characterized in that the lower section of the heat gun is equipped with several
Hook, various tools of the hook for temporarily placing the pipette tips of heat gun and for overhauling circuit board.
7. circuit board maintenance tool as claimed in claim 1 or 2, which is characterized in that the testing tool for circuit board case installation
On the bottom plate of tooling case ontology, multi-layer drawers are equipped in tool box.
8. circuit board maintenance tool as claimed in claim 1 or 2, which is characterized in that the side of the tooling case is equipped with can be with
Four angles of the chamber door of switch, tooling bottom portion are equipped with idler wheel.
9. circuit board maintenance tool as claimed in claim 1 or 2, which is characterized in that the exhaust fan is set to the top of tooling case
Face, air inlet are communicated with tooling box cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811431939.8A CN109352121A (en) | 2018-11-28 | 2018-11-28 | Circuit board overhauls frock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811431939.8A CN109352121A (en) | 2018-11-28 | 2018-11-28 | Circuit board overhauls frock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109352121A true CN109352121A (en) | 2019-02-19 |
Family
ID=65343362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811431939.8A Pending CN109352121A (en) | 2018-11-28 | 2018-11-28 | Circuit board overhauls frock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109352121A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112788861A (en) * | 2019-11-07 | 2021-05-11 | 重庆方正高密电子有限公司 | Printed circuit board maintenance platform |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204470755U (en) * | 2015-01-12 | 2015-07-15 | 开封龙宇化工有限公司 | A kind of circuit board repair fixture |
| CN205834413U (en) * | 2016-07-10 | 2016-12-28 | 江苏融源再生资源科技有限公司 | A kind of circuit board element removes collection device |
| CN206405557U (en) * | 2017-01-11 | 2017-08-15 | 东莞市崴泰电子有限公司 | A kind of automatic repairing machine of PCBA through holes direct inserting device |
| CN207969132U (en) * | 2018-01-30 | 2018-10-12 | 重庆川乾科技有限公司 | A kind of BGA Rework stations heating system |
| CN209407635U (en) * | 2018-11-28 | 2019-09-20 | 南京信息职业技术学院 | Circuit board overhauls frock |
-
2018
- 2018-11-28 CN CN201811431939.8A patent/CN109352121A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204470755U (en) * | 2015-01-12 | 2015-07-15 | 开封龙宇化工有限公司 | A kind of circuit board repair fixture |
| CN205834413U (en) * | 2016-07-10 | 2016-12-28 | 江苏融源再生资源科技有限公司 | A kind of circuit board element removes collection device |
| CN206405557U (en) * | 2017-01-11 | 2017-08-15 | 东莞市崴泰电子有限公司 | A kind of automatic repairing machine of PCBA through holes direct inserting device |
| CN207969132U (en) * | 2018-01-30 | 2018-10-12 | 重庆川乾科技有限公司 | A kind of BGA Rework stations heating system |
| CN209407635U (en) * | 2018-11-28 | 2019-09-20 | 南京信息职业技术学院 | Circuit board overhauls frock |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112788861A (en) * | 2019-11-07 | 2021-05-11 | 重庆方正高密电子有限公司 | Printed circuit board maintenance platform |
| CN112788861B (en) * | 2019-11-07 | 2022-06-17 | 重庆方正高密电子有限公司 | Printed circuit board maintenance platform |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190219 |