CN112157331B - Electronic information circuit board maintenance platform of quick location - Google Patents
Electronic information circuit board maintenance platform of quick location Download PDFInfo
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- CN112157331B CN112157331B CN202010885302.7A CN202010885302A CN112157331B CN 112157331 B CN112157331 B CN 112157331B CN 202010885302 A CN202010885302 A CN 202010885302A CN 112157331 B CN112157331 B CN 112157331B
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- circuit board
- fixed
- electronic information
- maintenance platform
- workbench
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- 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
- B23K3/08—Auxiliary devices therefor
- B23K3/087—Soldering or brazing jigs, fixtures or clamping means
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Supply And Installment Of Electrical Components (AREA)
Abstract
The invention belongs to the technical field of circuit board maintenance, in particular to a quickly-positioned electronic information circuit board maintenance platform, aiming at the problem that electronic components on the surface of a circuit board are inconvenient to fix, the quickly-positioned electronic information circuit board maintenance platform comprises a workbench, wherein a cavity is arranged in the workbench and is of a cuboid structure, a rectangular opening is formed in the middle of the upper surface of the workbench, a C-shaped supporting frame is fixed in the middle of the bottom of the workbench, the top end of the C-shaped supporting frame is arranged to be of an inclined structure, a bottom plate is fixed at the top end of the C-shaped supporting frame, a thrust ball bearing is fixed at the top end of the bottom plate, a fixing plate is fixed at the top end of the thrust ball bearing through bolts, and top posts distributed in an equidistant and staggered mode are fixed on the upper surface of the fixing plate. The circuit board body can be tightly pressed on the workbench when in use, can be rotated in real time according to the operation position, and can quickly dissipate smoke generated during welding.
Description
Technical Field
The invention relates to the technical field of circuit board maintenance, in particular to a quickly-positioned electronic information circuit board maintenance platform.
Background
Electronic information engineering is a subject of electronic information control and information processing by applying modern technologies such as computers, and mainly studies on acquisition and processing of information, design, development, application and integration of electronic equipment and information systems. Electronic information engineering has covered many aspects of society. The electronic information engineering specialty is a specialty integrating modern electronic technology, information technology and communication technology.
Electronic components are basic elements in electronic circuits, typically individually packaged, and have two or more leads or metal contacts. The electronic components are interconnected to form an electronic circuit having a specific function, such as: amplifiers, radio receivers, oscillators, etc., one of the common ways to connect electronic components is soldering to a printed circuit board.
But in the past, the electronic circuit board is very inconvenient to fix due to the fact that the surface protrusions of the electronic circuit board, namely a plurality of electronic components, affect the working efficiency of the electronic circuit board, can be maintained only at one fixed position, and cause the problem of low use efficiency, and the problem that the existing workers are easy to damage the electronic circuit board during maintenance. Therefore, further research needs to be conducted on the existing electronic circuit board, and an electronic circuit board maintenance platform is provided.
Disclosure of Invention
The invention provides a quick-positioning electronic information circuit board maintenance platform based on the technical problem that electronic components on the surface of a circuit board are numerous to cause inconvenience in fixing.
The invention provides a quickly-positioned electronic information circuit board maintenance platform, which comprises a workbench, wherein a cavity is arranged in the workbench, the middle of the upper surface of the workbench is of a cuboid structure, a rectangular opening is formed in the middle of the bottom of the workbench, a C-shaped supporting frame is fixed in the middle of the bottom of the workbench, the top end of the C-shaped supporting frame is arranged into an inclined structure, a bottom plate is fixed at the top end of the C-shaped supporting frame, a thrust ball bearing is fixed at the top end of the bottom plate, a fixing plate is fixed at the top end of the thrust ball bearing through bolts, top posts distributed in an equidistance staggered manner are fixed on the upper surface of the fixing plate, supporting plates are fixed at the top ends of the top posts, a circuit board body is placed at the top ends of the supporting plates, a guide rail with an upward opening is fixed on the upper surface of the workbench close to the edge, a sliding block is connected in a sliding groove of the guide rail in a sliding manner, and a screw hole is formed in the middle of the upper surface of the sliding block, and the spiro union has the double-screw bolt in the screw, the top of double-screw bolt is fixed with two perpendicular risers that are parallel to each other, and rotates between two perpendicular risers and be connected with same root pivot, the outer wall of pivot has cup jointed bow-shaped depression bar, and the one end sliding connection that the pivot was kept away from to bow-shaped depression bar has the extension rod, the tip of extension rod is fixed with and has pressed the pole mechanism, the pole mechanism includes outer tube and the interior slide bar of sliding connection in its inside.
As a preferable scheme in the invention, a compression spring is arranged between the top end of the inner slide rod and the top inner wall of the outer tube, the circumferential outer wall of the inner slide rod is close to the top end annular cutting shoulder, the circumferential outer wall of the annular cutting shoulder is sleeved with a sleeve, and the outer wall of the sleeve is fixedly provided with a poke rod.
As a preferable scheme in the invention, the outer wall of the outer tube is provided with a strip-shaped hole matched with the outer diameter of the poke rod, and the bottom end of the inner slide rod is fixed with an insulating head.
In a preferred embodiment of the present invention, a rubber layer is fixed to the top end of the pallet, and bumps are fixed to the top end of the rubber layer and are distributed at equal intervals.
Preferably, the upper surface and the lower surface of the sliding block are provided with spherical grooves close to four corners, balls are embedded in the spherical grooves, and one side, far away from the screw hole, of the upper surface of the sliding block is screwed with a positioning bolt.
As a preferable scheme in the invention, spring grooves are formed in the opposite sides of the two vertical plates, and torsion springs with the inner diameters matched with the diameter of the rotating shaft are arranged in the two spring grooves.
As the preferable scheme in the invention, the self-locking thread matched with the screw hole is arranged on the circumferential outer wall of the stud close to the bottom end.
As a preferable scheme in the invention, a drawer opening is formed in the front surface of the workbench, which is close to the bottom end, a drawer is connected in the drawer opening in a sliding manner, and the opening edge of the rectangular opening is arranged in a slope shape, which is close to the upper part of the drawer.
According to the preferable scheme of the invention, the upper surface of the workbench is fixed with air boxes close to the edges of two sides, and fans are embedded on one sides of the air boxes far away from the workbench.
According to the preferred scheme of the invention, the opposite sides of the two air boxes, which are close to the top ends, are communicated with the air injection pipes through the three-way pipes, the spray heads which are distributed equidistantly are inserted in the positions, which are close to the middle, of the circumferential outer walls of the air injection pipes, and the positions of the spray heads face different positions of the upper surface of the circuit board body.
The beneficial effects of the invention are as follows:
1. this kind of electronic information circuit board maintenance platform of quick location, through the depression bar mechanism of the bow-shaped depression bar and the extension rod tip that set up, can when using when needs carry out the centre gripping to the circuit board body and fix the time only need take the extension rod out from the tip of bow-shaped depression bar, until the interior slide bar bottom pressure in depression bar mechanism do not have the place of protrusion at the upper surface of circuit board body can, this moment can be under the prerequisite that does not influence and operate the circuit board surface and press it on the upper surface of fixed plate.
2. This kind of electronic information circuit board maintenance platform of quick location through the positioning bolt who sets up on the slider, can need when the slider that slides when using only need with positioning bolt not hard up can, only need twist when the rigidity positioning bolt can be with the slider location.
3. This kind of electronic information circuit board maintenance platform of quick location cup joints the sleeve pipe of shoulder outer wall at the annular through the setting, can press the bottom of interior slide bar in the centre of circuit board when using, can also drive the circuit board body and rotate under the condition of unmovable interior slide bar this moment, and then lets the operator will treat that the position of operation rotates to being closer to user's face in the front, conveniently observes slight circumstances.
4. This kind of electronic information circuit board maintenance platform of quick location through the bellows that sets up, can produce smog when carrying out the soldering with the iron of electrician when using and influence user's operation sight, and the shower nozzle can blow to the surface of circuit board body this moment and not only can let the welding position dry and solid fast, can scatter smog fast moreover, guarantees that the operation position sight is good.
The device has the advantages that the structure is novel, the circuit board body can be tightly pressed on the workbench when in use, the circuit board body can be rotated in real time according to an operation position, and smoke generated during welding can be quickly dispersed.
Drawings
FIG. 1 is a schematic cross-sectional view of a rapidly positioning electronic information circuit board maintenance platform according to the present invention;
FIG. 2 is a schematic perspective view of a rapidly positioning clamping device for an electronic information circuit board maintenance platform according to the present invention;
FIG. 3 is a schematic cross-sectional view of a stud of a quick positioning electronic information circuit board maintenance platform according to the present invention;
FIG. 4 is a schematic cross-sectional view of a press bar mechanism of a quick positioning electronic information circuit board maintenance platform according to the present invention;
fig. 5 is a schematic perspective view of a fast positioning bellows of an electronic information circuit board maintenance platform according to the present invention.
In the figure: 1 workbench, 2C-shaped supporting frame, 3 guide rails, 4 sliding blocks, 5 self-locking threads, 6 vertical plates, 601 studs, 7 rotating shafts, 701 spring grooves, 8 bow-shaped compression bars, 9 extension bars, 10 outer tubes, 11 inner sliding bars, 12 spray heads, 13 air injection tubes, 14 air boxes, 15 supporting plates, 16 rectangular openings, 17 drawer openings, 18 drawers, 19 thrust ball bearings, 20 fixing plates, 21 bottom plates, 22 strip-shaped holes, 23 compression springs, 24 sleeves, 2401 poke rods, 25 annular shoulder cutting rods and 26 fans.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Example 1
Referring to fig. 1-5, a maintenance platform for a fast-positioning electronic information circuit board comprises a workbench 1 with a rectangular structure cavity therein, wherein a rectangular opening 16 is formed in the middle of the upper surface of the workbench 1, a C-shaped support frame 2 is fixed in the middle of the bottom of the workbench 1, the top end of the C-shaped support frame 2 is arranged to be an inclined structure, waste residues generated during welding can be conveniently removed, a bottom plate 21 is fixed at the top end of the C-shaped support frame 2, a thrust ball bearing 19 is fixed at the top end of the bottom plate 21, a fixing plate 20 is fixed at the top end of the thrust ball bearing 19 through bolts, top posts distributed in an equidistant and staggered manner are fixed on the upper surface of the fixing plate 20, supporting plates 15 are fixed at the top ends of the top posts, a circuit board body is placed at the top ends of a plurality of supporting plates 15, a guide rail 3 with an opening and a C-shaped structure upward section is fixed on the upper surface of the workbench 1 close to the edge, and a slide way of the guide rail 3 is connected with a slide block 4 in a sliding manner, the middle part of the upper surface of the sliding block 4 is provided with a screw hole, a stud 601 is screwed in the screw hole, the top end of the stud 601 is fixed with two vertical plates 6 which are parallel to each other, and a rotating shaft 7 is rotatably connected between the two vertical plates 6, the outer wall of the rotating shaft 7 is sleeved with an arch-shaped pressure lever 8, and one end of the bow-shaped compression bar 8 far away from the rotating shaft 7 is connected with an extension rod 9 in a sliding way, the end part of the extension rod 9 is fixed with a compression bar mechanism, the compression bar mechanism comprises an outer pipe 10 and an inner sliding rod 11 connected inside the outer pipe in a sliding way, therefore, when the circuit board is clamped and fixed, the extension rod 9 is pulled out from the end part of the bow-shaped compression rod 8 until the bottom end of the inner sliding rod 11 in the compression rod mechanism is pressed on the upper surface of the circuit board body without a protrusion, and the circuit board can be pressed on the upper surface of the fixing plate 20 on the premise of not influencing the operation of the surface of the circuit board.
In the invention, a compression spring 23 is arranged between the top end of the inner slide rod 11 and the top inner wall of the outer tube 10, the circumferential outer wall of the inner slide rod 11 is close to the top end annular cutting shoulder 25, the circumferential outer wall of the annular cutting shoulder 25 is sleeved with a sleeve 24, and the outer wall of the sleeve 24 is fixed with a poke rod 2401.
Wherein, the outer wall of outer tube 10 is opened has the bar hole 22 with poker rod 2401 external diameter looks adaptation, and the bottom mounting of interior slide bar 11 has the insulator head to can press the bottom of interior slide bar 11 in the middle of the centre of circuit board when using, can also drive the circuit board body and rotate under the condition of not moving interior slide bar 11 this moment, and then let the operator will treat that the position of operation rotates to being closer to user's face, conveniently observes slight condition.
Wherein, the top of the supporting plate 15 is fixed with a rubber layer, and the top of the rubber layer is fixed with salient points which are distributed at equal intervals.
Wherein, the upper and lower surface of slider 4 is close to four corners department and all opens spherical groove, and all inlays in the spherical groove and is equipped with the ball, and one side spiro union that the screw was kept away from to the upper surface of slider 4 has positioning bolt to can only need when sliding slider 4 when using not hard up can with positioning bolt, only need twist when the rigidity and move positioning bolt and can fix a position the slider.
Wherein, two perpendicular risers 6 relative one sides all open spring groove 701, and all are provided with the internal diameter and pivot 7 diameter matched with torsion spring in two spring groove 701 to can let bow-shaped depression bar 8 have a decurrent pressing force all the time when using.
Wherein, the circumference outer wall of the stud 601 near the bottom is provided with a self-locking thread 5 matched with the screw hole.
A drawer opening 17 is formed in the front face of the workbench 1 close to the bottom end, a drawer 18 is connected to the drawer opening 17 in a sliding mode, and the opening edge of the rectangular opening 16 close to the upper portion of the drawer 18 is arranged in a slope shape, so that collection of surplus materials generated in soldering tin is facilitated.
The working principle is as follows: before use, the pressure lever mechanism is lifted upwards, and then the circuit board body to be operated is placed above the fixed plate 20, preferably the center of the circuit board body is positioned above the circular shape of the fixed plate 20 so as to rotate later; when the circuit board clamping device is used, when the circuit board body needs to be clamped and fixed, the extension rod 9 only needs to be pulled out from the end part of the bow-shaped compression rod 8 until the bottom end of the inner sliding rod 11 in the compression rod mechanism is pressed on a place without a projection on the upper surface of the circuit board body, so that a hand can be loosened, and the circuit board clamping device can be pressed on the upper surface of the fixing plate 20 on the premise of not influencing the operation on the surface of the circuit board.
Example 2
Referring to fig. 1 and 5, in this embodiment, compared with embodiment 1, the maintenance platform for an electronic information circuit board with fast positioning further includes air boxes 14 fixed on the upper surface of the workbench 1 near the edges of both sides, and fans 26 embedded on one sides of the air boxes 14 far from the workbench 1.
Wherein, two relative one sides of bellows 14 are close to the top and all have jet-propelled pipe 13 through the three-way pipe intercommunication, and the circumference outer wall of jet-propelled pipe 13 is close to the intermediate position shower nozzle 12 that the equidistance distributes of pegging graft, the position of shower nozzle 12 is towards the different positions of the upper surface of circuit board body, thereby can produce smog when carrying out the soldering with the iron of electricity rochony when using and influence user's operation sight, the shower nozzle can blow to the surface of circuit board body this moment and not only can let the welding position dry and fast admittedly, and can dispel smog fast, guarantee that the operation position sight is good.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (8)
1. The utility model provides an electronic information circuit board maintenance platform of quick location establishes workstation (1) that the cavity is the cuboid structure in including, the upper surface middle part of workstation (1) is opened there is rectangle mouth (16), and is fixed with C shape carriage (2) in the middle of the bottom of workstation (1), the top of C shape carriage (2) sets up to slope column structure, and the top of C shape carriage (2) is fixed with bottom plate (21), the top of bottom plate (21) is fixed with thrust ball bearing (19), its characterized in that, the top of thrust ball bearing (19) is through the bolt fastening has fixed plate (20), and the last fixed surface of fixed plate (20) has the fore-set that the equidistance distributes that staggers, the top of fore-set all is fixed with layer board (15), and the circuit board body places the top at numerous layer board (15), the upper surface of workstation (1) is close to and is fixed with ascending guided way edge (3) of opening, a sliding block (4) is connected in a sliding groove of the guide rail (3) in a sliding manner, a screw hole is formed in the middle of the upper surface of the sliding block (4), a stud (601) is connected in the screw hole in a threaded manner, two vertical plates (6) which are parallel to each other are fixed at the top end of the stud (601), a same rotating shaft (7) is connected between the two vertical plates (6) in a rotating manner, an arched pressure rod (8) is sleeved on the outer wall of the rotating shaft (7), an extension rod (9) is connected to one end, far away from the rotating shaft (7), of the arched pressure rod (8) in a sliding manner, a pressure rod mechanism is fixed at the end part of the extension rod (9), the pressure rod mechanism comprises an outer tube (10) and an inner sliding rod (11) connected in the outer tube in a sliding manner, a compression spring (23) is arranged between the top end of the inner sliding rod (11) and the top inner wall of the outer tube (10), and an annular cutting shoulder (25) is arranged on the circumferential outer wall of the inner sliding rod (11) close to the top end, the circumference outer wall of shoulder (25) is cut to annular has cup jointed sleeve pipe (24), the outer wall of sleeve pipe (24) is fixed with poker rod (2401), the outer wall of outer tube (10) is opened has bar hole (22) with poker rod (2401) external diameter looks adaptation, and the bottom mounting of interior slide bar (11) has the insulator head.
2. A quick positioning maintenance platform for electronic information circuit board according to claim 1, characterized in that the top of said supporting plate (15) is fixed with a rubber layer, and the top of the rubber layer is fixed with equidistantly distributed salient points.
3. The quick positioning maintenance platform for the electronic information circuit board as claimed in claim 1, wherein the upper and lower surfaces of the slider (4) are provided with spherical grooves near four corners, the spherical grooves are embedded with balls, and one side of the upper surface of the slider (4) far from the screw hole is screwed with a positioning bolt.
4. The quick positioning maintenance platform for electronic information circuit boards as claimed in claim 1, wherein the two vertical plates (6) are provided with spring slots (701) on opposite sides, and the two spring slots (701) are provided with torsion springs with inner diameters matched with the diameter of the rotating shaft (7).
5. The quick positioning electronic information circuit board maintenance platform as claimed in claim 4, wherein the outer circumferential wall of the stud (601) near the bottom end is provided with a self-locking thread (5) matched with the screw hole.
6. The quick-positioning electronic information circuit board maintenance platform as claimed in claim 1, wherein a drawer opening (17) is formed in the front face of the workbench (1) near the bottom end, a drawer (18) is slidably connected in the drawer opening (17), and the opening edge of the rectangular opening (16) is arranged in a slope shape near the upper side of the drawer (18).
7. The quick-positioning maintenance platform for the electronic information circuit board as claimed in claim 1, wherein the air box (14) is fixed on the upper surface of the workbench (1) near the two side edges, and the fan (26) is embedded on one side of the air box (14) far away from the workbench (1).
8. The quick-positioning electronic information circuit board maintenance platform as claimed in claim 7, wherein the opposite sides of the two air boxes (14) close to the top ends are both communicated with the air injection pipes (13) through three-way pipes, the circumferential outer walls of the air injection pipes (13) close to the middle positions are inserted with the spray heads (12) distributed at equal intervals, and the positions of the spray heads (12) face different positions of the upper surface of the circuit board body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010885302.7A CN112157331B (en) | 2020-08-28 | 2020-08-28 | Electronic information circuit board maintenance platform of quick location |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010885302.7A CN112157331B (en) | 2020-08-28 | 2020-08-28 | Electronic information circuit board maintenance platform of quick location |
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| Publication Number | Publication Date |
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| CN112157331A CN112157331A (en) | 2021-01-01 |
| CN112157331B true CN112157331B (en) | 2021-12-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010885302.7A Active CN112157331B (en) | 2020-08-28 | 2020-08-28 | Electronic information circuit board maintenance platform of quick location |
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| CN (1) | CN112157331B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115229292B (en) * | 2022-09-22 | 2022-12-27 | 迅管(深圳)科技有限公司 | Fine welding device for integrated circuit processing |
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|---|---|---|---|---|
| CN106944376A (en) * | 2017-05-03 | 2017-07-14 | 刘养青 | A kind of high effect dust cleaner for circuit board |
| CN209420023U (en) * | 2018-10-18 | 2019-09-20 | 万安裕维电子有限公司 | Jig is used in a kind of processing of pcb board |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06176830A (en) * | 1992-12-09 | 1994-06-24 | Toshiba Corp | Electronic circuit module and manufacture thereof |
| CN101296573A (en) * | 2007-12-18 | 2008-10-29 | 苏州明富自动化设备有限公司 | Clamper pressure bar of PCB plate |
| CN102909455B (en) * | 2012-10-31 | 2014-10-15 | 中国科学院长春光学精密机械与物理研究所 | Printed circuit board fixing platform |
| CN202998694U (en) * | 2012-12-19 | 2013-06-12 | 昆山迈致治具科技有限公司 | Welding tool for PCB |
| CN105057953A (en) * | 2015-09-02 | 2015-11-18 | 四川金锋建设有限公司 | Machining positioning method of pre-welding purifier |
| KR20180102926A (en) * | 2017-03-08 | 2018-09-18 | 주식회사 올릭스 | Forming jig and soldering method using the same |
| CN206732444U (en) * | 2017-05-17 | 2017-12-12 | 安徽安凯汽车股份有限公司 | A kind of compression tooling for the covering welding of side top |
| CN107962271A (en) * | 2017-12-25 | 2018-04-27 | 镇江市丹徒区飞翔电子有限公司 | A kind of pcb board welding fixture |
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2020
- 2020-08-28 CN CN202010885302.7A patent/CN112157331B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106944376A (en) * | 2017-05-03 | 2017-07-14 | 刘养青 | A kind of high effect dust cleaner for circuit board |
| CN209420023U (en) * | 2018-10-18 | 2019-09-20 | 万安裕维电子有限公司 | Jig is used in a kind of processing of pcb board |
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| CN112157331A (en) | 2021-01-01 |
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Effective date of registration: 20230417 Address after: 210000 No.1 Kechuang Road, Yaohua street, Qixia District, Nanjing City, Jiangsu Province Patentee after: Nanjing Yilanbei Biotechnology Co.,Ltd. Address before: No.99 Wenlan Road, Xianlin University Town, Qixia District, Nanjing City, Jiangsu Province Patentee before: NANJING College OF INFORMATION TECHNOLOGY |
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