CN106546909B - Bearing device for checking welding quality of circuit board chips - Google Patents
Bearing device for checking welding quality of circuit board chips Download PDFInfo
- Publication number
- CN106546909B CN106546909B CN201610970898.4A CN201610970898A CN106546909B CN 106546909 B CN106546909 B CN 106546909B CN 201610970898 A CN201610970898 A CN 201610970898A CN 106546909 B CN106546909 B CN 106546909B
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- Prior art keywords
- column
- gear
- circuit board
- backup plate
- lifting
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- 238000003466 welding Methods 0.000 title claims abstract description 20
- 238000007689 inspection Methods 0.000 claims abstract description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 24
- 239000010959 steel Substances 0.000 claims description 24
- 239000000956 alloy Substances 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 238000001514 detection method Methods 0.000 abstract description 7
- 238000011179 visual inspection Methods 0.000 abstract description 5
- 229910000679 solder Inorganic materials 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 208000003464 asthenopia Diseases 0.000 description 1
- 208000002173 dizziness Diseases 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/302—Contactless testing
- G01R31/308—Contactless testing using non-ionising electromagnetic radiation, e.g. optical radiation
- G01R31/309—Contactless testing using non-ionising electromagnetic radiation, e.g. optical radiation of printed or hybrid circuits or circuit substrates
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Electromagnetism (AREA)
- Toxicology (AREA)
- General Engineering & Computer Science (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
- Electric Connection Of Electric Components To Printed Circuits (AREA)
Abstract
The invention discloses a bearing device for checking welding quality of a circuit board chip, which comprises a base (1), a rotating column (2), a lifting column (3), a platform (4) and a backup plate (5). The permanent-magnetic base adopted by the invention is provided with a horizontal rotating shaft, the rotating column is provided with a dovetail groove, a gear and a lifting knob, the lifting column is provided with a dovetail rail and a rack, the platform is provided with a pitching seat, and the backup plate is provided with an elevation rotating shaft, a locking knob and a spring clamp; the rotating column is rotatably connected to the upper surface of the base; the lifting column can be connected to the left side surface of the rotating column in an up-and-down lifting manner, and the gear and the rack are meshed with each other; the platform is fixedly connected to the upper surface of the lifting column, and the backup plate is rotatably connected with the elevation shaft seat through the elevation shaft; when the device is applied, the device is matched with a video microscope to carry out microscopic visual inspection on the welding quality of the chip pins on the circuit board; after the focal length position is aligned, the technical scheme that frequent focusing is not needed when the inspected circuit board is replaced is adopted, so that the inspection work of the circuit board production line is realized, and the purposes of reducing the working intensity and the leakage and error detection rate are achieved.
Description
Technical Field
The invention relates to a bearing device, in particular to a bearing device for checking the welding quality of a chip of a circuit board, which is used for bearing the circuit board and is matched with a video microscope to perform microscopic visual check on the welding quality of pins of the integrated circuit chip on the circuit board.
Background
An integrated circuit chip provided with a plurality of pins is called a chip for short, and a printed circuit board is called a circuit board for short; when the chip is produced in industrial scale, the chip is pasted on a circuit board printed with solder paste by a chip mounter, after the chip is welded by a reflow oven, the welding quality of a plurality of pins of the chip is required to be visually and fully checked one by one, and the dummy welding pins are detected to be subjected to manual repair welding so as to ensure the real welding and stop the dummy welding; in the prior art, a handheld circuit board is adopted, and under a magnifier working lamp, the welding quality of a chip pin is checked visually through a magnifier; because of uncertainty of the position of the handheld circuit board, the handheld circuit board is required to be aligned with the focal length of the magnifying glass from time to time during inspection, and human eyes are required to be matched adaptively, so that the working strength is high, visual fatigue, dizziness and missing and error detection of the human eyes are easy to occur; therefore, the prior art has the problems and disadvantages of high working strength and high leakage error detection rate.
Disclosure of Invention
Aiming at the problems and the defects existing in the prior art, the invention adopts a device consisting of a base, a rotating column, a lifting column, a platform and a backup plate, wherein the permanent-magnetic base is provided with a horizontal rotating shaft protruding upwards, the rotating column is provided with a dovetail groove, a gear and a lifting knob, the lifting column is provided with a dovetail rail and a rack, the front side surface and the rear side surface of the platform are respectively provided with a pitching seat, and the backup plate is provided with an elevation rotating shaft, a locking knob and a spring clamp; the rotating column is rotatably connected to the upper surface of the base through the horizontal rotating shaft; the lifting column is buckled with the dovetail rail in a sliding way through the dovetail groove, can be connected to the left side surface of the rotating column in an up-and-down lifting way, and the gear and the rack are meshed with each other; the platform is fixedly connected to the upper surface of the lifting column, the lower part of the backup plate is positioned between the two elevation shaft seats, and the backup plate is rotatably connected with the elevation shaft seats through an elevation angle rotating shaft;
when the device is applied, the device is matched with a video microscope to carry out microscopic visual inspection on the welding quality of the chip pins on the circuit board; the permanent magnetic base is fixedly attracted to a steel inspection bench of a production line, the backup plate is pulled to adjust the elevation angle of the backup plate, and the locking knob is screwed to fix the backup plate; the circuit board is clamped on the backup plate through the spring clamp, the lifting knob is rotated to drive the gear, the lifting column and the platform are driven to lift through the rack, the circuit board is aligned to the focal length of the video microscope, virtual welding spots of the chip pins are visually inspected through a display screen of the video microscope, and the rotating column is pulled to horizontally rotate along the horizontal rotating shaft, so that the circuit board can be observed laterally; after the focal length position of the device is aligned, when the inspected circuit board is replaced, frequent focusing is not needed, and the virtual welding points of the chip pins are inspected through the display screen of the video microscope, so that the bearing device for inspecting the welding quality of the circuit board chips is provided, and the purposes of reducing the working intensity and the error detection rate of the large-scale circuit board production line are achieved.
The purpose of the invention is realized in the following way: the utility model provides a bear device of inspection circuit board chip welding quality, includes base, column spinner, lifting column, platform, backup plate, wherein: the base is a cylindrical alloy permanent magnet member filled with a magnetic field, and a horizontal rotating shaft which protrudes upwards, is cylindrical and steel is fixedly arranged in the center of the upper surface of the base;
the rotary column is a rectangular block-shaped steel member, a chute with a trapezoid cross section in the up-down direction is arranged in the center of the left side face of the rotary column and is called a dovetail groove, a rectangular groove which is called a gear groove is arranged in the middle of the dovetail groove, a rotatable gear is arranged in the gear groove, the gear is connected with a gear shaft in a bonding manner, the gear shaft slides and supports in the front-back direction to penetrate through the rotary column, and a lifting knob is fixedly arranged at the front end of the gear shaft; the gear is a cylindrical straight tooth gear; a blind hole which is matched and connected with the horizontal rotating shaft in a sliding way is arranged below the rotating column and is called a horizontal rotating hole;
the lifting column is a rectangular block-shaped steel member, a sliding rail with a convex, vertical and trapezoid cross section is arranged in the center of the left side surface of the lifting column and is called a dovetail rail, and a rack which is vertical and convex is fixedly arranged in the center of the dovetail rail;
the platform is a rectangular plate-shaped steel member, and rectangular block-shaped elevation shaft seats are correspondingly arranged in the middle of the front side surface and the rear side surface of the platform respectively;
the backup plate is a rectangular plate-shaped steel member, the lower part of the backup plate is provided with elevation rotating shafts which penetrate through the front side surface and the rear side surface of the backup plate along the front-rear direction, are connected in a bonding way and are made of cylindrical rod steel, and the front end and the rear end of each elevation rotating shaft are provided with locking knobs which are connected in a threaded way and used for locking; spring clamps for clamping the circuit board are respectively arranged at the front and rear sides of the lower part of the left side surface of the backup plate;
the rotating column is rotatably connected to the upper surface of the base through the horizontal rotating shaft; the lifting column is buckled with the dovetail rail through the dovetail groove in a sliding way, can be connected to the left side surface of the rotating column in an up-and-down lifting way, and the gear is meshed with the rack; the platform is fixedly connected to the upper surface of the lifting column, the backup plate is positioned between the two elevation shaft seats and is rotatably connected with the elevation shaft seats through the elevation shaft rotating shaft, and the front locking knob and the rear locking knob are respectively positioned on the front side surface and the rear side surface of the front elevation shaft seat and the rear elevation shaft seat.
The direction plane expressed by the structure is divided into an upper plane, a lower plane, a left plane, a right plane, a front plane and a rear plane, wherein the front plane is a plane facing the front view of the device, and the rear plane is a plane opposite to the front plane.
Working principle and beneficial effects
The device is matched with a video microscope to carry out microscopic visual inspection on the welding quality of the chip pins on the circuit board.
When the locking device is applied, the permanently magnetic base is fixedly attracted on a steel inspection bench of a production line, the backup plate is pulled to adjust the elevation angle of the backup plate, and the locking knob is screwed to fix the backup plate; the circuit board is clamped on the backup plate through the spring clamp, the lifting knob is rotated to drive the gear, the lifting column and the platform are driven to lift through the rack, the circuit board is aligned to the focal length of the video microscope, virtual welding spots of the chip pins are visually inspected through a display screen of the video microscope, and the rotating column is pulled to horizontally rotate along the horizontal rotating shaft, so that the circuit board can be observed laterally;
the other function of the permanent magnetic base is that the magnetic field of the loop along the steel rotating column and lifting column has viscous damping function, so that the rotating column can not fall back or drift due to gravity or external vibration after the rotation of the rotating column and the lifting position of the lifting column are adjusted and determined.
The device has the advantages of simple structure, simple and convenient operation, reliable work, no need of frequently adjusting the focal length position when the inspected circuit board is replaced after the focal length position is aligned, and the virtual welding points of the chip pins are inspected by matching with the display screen of the video microscope, so that the inspection work of the large-scale circuit board production line is realized, the working condition is improved, the working intensity is reduced, and the leakage error detection rate is reduced.
The device comprises a base, a rotating column, a lifting column, a platform and a backup plate, wherein the permanent-magnetic base is provided with a horizontal rotating shaft protruding upwards, the rotating column is provided with a dovetail groove, a gear and a lifting knob, the lifting column is provided with a dovetail rail and a rack, the front side surface and the rear side surface of the platform are respectively provided with a pitching seat, and the backup plate is provided with an elevation rotating shaft, a locking knob and a spring clip; the rotating column is rotatably connected to the upper surface of the base through the horizontal rotating shaft; the lifting column is buckled with the dovetail rail in a sliding way through the dovetail groove, can be connected to the left side surface of the rotating column in an up-and-down lifting way, and the gear and the rack are meshed with each other; the platform is fixedly connected to the upper surface of the lifting column, the lower part of the backup plate is positioned between the two elevation shaft seats, and the backup plate is rotatably connected with the elevation shaft seats through an elevation angle rotating shaft;
when the device is applied, the device is matched with a video microscope to carry out microscopic visual inspection on the welding quality of the chip pins on the circuit board; the permanent magnetic base is fixedly attracted to a steel inspection bench of a production line, the backup plate is pulled to adjust the elevation angle of the backup plate, and the locking knob is screwed to fix the backup plate; the circuit board is clamped on the backup plate through the spring clamp, the lifting knob is rotated to drive the gear, the lifting column and the platform are driven to lift through the rack, the circuit board is aligned to the focal length of the video microscope, virtual welding spots of the chip pins are visually inspected through a display screen of the video microscope, and the rotating column is pulled to horizontally rotate along the horizontal rotating shaft, so that the circuit board can be observed laterally; when the device is utilized for aligning focal length positions, a detected circuit board is replaced without frequent focusing, and the virtual welding points of chip pins are checked through the display screen of the video microscope, so that the problems and defects of high working strength and high leakage error detection rate in the prior art are overcome.
Drawings
FIG. 1 is a schematic cross-sectional front view of a carrier for inspecting solder quality of a circuit board chip in accordance with the present invention;
fig. 2 is an isometric view of a carrier device for inspecting the solder quality of a circuit board chip according to the present invention.
The invention is described in further detail below in connection with the embodiments in the drawings, but should not be construed as limiting the invention in any way.
In the figure: the device comprises a base 1, a horizontal rotating shaft 11, a rotating column 2, a dovetail groove 21, a gear 22, a lifting knob 23, a lifting column 3, a dovetail rail 31, a rack 32, a platform 4, a pitching seat 41, a backing plate 5, an elevation rotating shaft 51, a locking knob 52, a spring clip 53, a circuit board 01 and a chip 02.
Detailed Description
Referring to fig. 1 and 2, the invention relates to a carrying device for inspecting welding quality of a circuit board chip, which comprises a base 1, a rotating column 2, a lifting column 3, a platform 4 and a backup plate 5, wherein: the base 1 is a cylindrical alloy permanent magnet member filled with a magnetic field, and a horizontal rotating shaft 11 which protrudes upwards, is cylindrical and is made of steel is fixedly arranged in the center of the upper surface of the base 1;
the rotary column 2 is a rectangular block-shaped steel member, a chute with a trapezoid cross section in the up-down direction is arranged in the center of the left side surface of the rotary column 2 and is called a dovetail groove 21, a rectangular groove is arranged in the middle of the dovetail groove 21 and is called a gear groove, a rotatable gear 22 is arranged in the gear groove, the gear 22 is connected with a gear shaft in a bonding manner, the gear shaft slides and supports in the front-back direction to pass through the rotary column 2, and a lifting knob 23 is fixedly arranged at the front end of the gear shaft; the gear 22 is a cylindrical straight gear; a blind hole which is matched and connected with the horizontal rotating shaft 11 in a sliding manner is arranged below the rotating column 2 and is called a horizontal rotating hole;
the lifting column 3 is a rectangular block-shaped steel member, a convex, up-down and trapezoid-shaped cross section sliding rail is arranged in the center of the left side surface of the lifting column 3 and is called as a dovetail rail 31, and a convex rack 32 in the up-down direction is fixedly arranged in the center of the dovetail rail 31;
the platform 4 is a rectangular plate-shaped steel member, and the middle parts of the front side and the rear side of the platform 4 are correspondingly provided with rectangular block-shaped upward shaft seats 41 respectively;
the backup plate 5 is a rectangular plate-shaped steel member, the lower part of the backup plate 5 is provided with a front and rear side surface, a bonding connection and a cylindrical rod-shaped steel elevation rotating shaft 51 which passes through the backup plate 5 along the front and rear direction, and the front and rear ends of the elevation rotating shaft 51 are provided with locking knobs 52 which are in threaded connection and used for locking; spring clamps 53 for clamping the circuit board 01 are respectively arranged on the front and rear sides of the lower part of the left side surface of the backup plate 5;
the rotary column 2 is rotatably connected to the upper surface of the base 1 through the horizontal rotary shaft 11; the lifting column 3 is buckled with the dovetail rail 31 through the dovetail groove 21 in a sliding way, can be connected to the left side surface of the rotary column 2 in an up-and-down lifting way, and the gear 22 and the rack 32 are meshed with each other; the platform 4 is fixedly connected to the upper surface of the lifting column 3, the backup plate 5 is located between the two elevation shaft seats 41 and is rotatably connected with the elevation shaft seats 41 through the elevation shaft rotating shafts 51, and the front locking knob 52 and the rear locking knob 52 are located on the front side surface and the rear side surface of the front elevation shaft seats 41 and the rear elevation shaft seats 41 respectively.
The direction plane expressed by the structure is divided into an upper plane, a lower plane, a left plane, a right plane, a front plane and a rear plane, wherein the front plane is a plane facing the front view of the device, and the rear plane is a plane opposite to the front plane.
Working principle and beneficial effects
The device is matched with a video microscope to carry out microscopic visual inspection on the welding quality of the 02 pins of the chip on the circuit board 01.
When the device is applied, the permanently magnetic base 1 is fixedly attracted on a steel inspection bench of a production line, the backup plate 5 is pulled to adjust the elevation angle of the backup plate 5, and the locking knob 52 is screwed to fix the backup plate 5; the circuit board 01 is clamped on the backup plate 5 through the spring clamp 53, the lifting knob 23 is rotated to drive the gear 22, the lifting column 3 and the platform 4 are driven to lift through the rack 32, the circuit board 01 is aligned to the focal length of the video microscope, the virtual welding point of the pin 02 of the chip is visually inspected through the display screen of the video microscope, the rotating column 2 is pulled to horizontally rotate along the horizontal rotating shaft 11, and lateral observation can be carried out on the circuit board 01;
the other function of the permanent magnetic base 1 is that the magnetic field forming a loop along the steel rotating column 2 and the lifting column 3 has viscous damping function, so that the rotating column 2 does not fall or drift due to gravity or external vibration after the rotation of the rotating column 2 and the lifting position adjustment of the lifting column 3 are determined.
The device has the advantages of simple structure, simple and convenient operation, reliable work, no need of frequently adjusting the focal length position when the inspected circuit board 01 is replaced after the focal length position is aligned, and the virtual welding point of the pin of the chip 02 is inspected by matching with the display screen of the video microscope, so that the inspection work of the production line of the large-scale circuit board 01 is realized, the working condition is improved, the working intensity is reduced, and the error leakage detection rate is reduced.
Claims (1)
1. The utility model provides an inspection circuit board chip welding quality's load-carrying device, includes base (1), column spinner (2), lifting column (3), platform (4), backup plate (5), its characterized in that: the base (1) is a cylindrical alloy permanent magnet member filled with a magnetic field, and a horizontal rotating shaft (11) which protrudes upwards, is cylindrical and is made of steel is fixedly arranged in the center of the upper surface of the base (1);
the rotary column (2) is a rectangular block-shaped steel member, a chute with a trapezoid cross section in the up-down direction is arranged in the center of the left side face of the rotary column (2) and is called a dovetail groove (21), a rectangular groove is formed in the middle of the dovetail groove (21) and is called a gear groove, a rotatable gear (22) is arranged in the gear groove, the gear (22) is connected with a gear shaft in a bonding mode, the gear shaft slides and supports in the front-back direction to penetrate through the rotary column (2), and a lifting knob (23) is fixedly arranged at the front end of the gear shaft; the gear (22) is a cylindrical straight tooth gear; a blind hole which is matched and connected with the horizontal rotating shaft (11) in a sliding way is arranged below the rotating column (2) and is called a horizontal rotating hole;
the lifting column (3) is a rectangular block-shaped steel member, a sliding rail with a trapezoid cross section in the up-down direction and protruding is arranged in the center of the left side face of the lifting column (3) and is called as a dovetail rail (31), and a rack (32) protruding in the up-down direction is fixedly arranged in the center of the dovetail rail (31);
the platform (4) is a rectangular plate-shaped steel member, and the middle parts of the front side surface and the rear side surface of the platform (4) are correspondingly provided with rectangular block-shaped elevation shaft seats (41) respectively;
the backup plate (5) is a rectangular plate-shaped steel member, the lower part of the backup plate (5) is provided with elevation rotating shafts (51) penetrating through the front side surface, the rear side surface, the bonding connection and the cylindrical rod-shaped steel of the backup plate (5) along the front and rear direction, and the front end and the rear end of each elevation rotating shaft (51) are provided with locking knobs (52) which are in threaded connection and used for locking; two spring clamps (53) for clamping the circuit board (01) are respectively arranged at the front and rear sides of the lower part of the left side surface of the backup plate (5);
the rotating column (2) is rotatably connected to the upper surface of the base (1) through the horizontal rotating shaft (11); the lifting column (3) is buckled with the dovetail rail (31) through the dovetail groove (21) in a sliding way, can be connected to the left side surface of the rotary column (2) in an up-down lifting way, and the gear (22) is meshed with the rack (32); the platform (4) is fixedly connected to the lifting column (3), the backup plate (5) is located between the two elevation shaft seats (41) and rotatably connected with the elevation shaft seats (41) through the elevation shaft rotating shafts (51), and the front locking knob (52) and the rear locking knob are located on the front side face and the rear side face of the front elevation shaft seats (41) and the rear elevation shaft seats respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610970898.4A CN106546909B (en) | 2016-10-29 | 2016-10-29 | Bearing device for checking welding quality of circuit board chips |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610970898.4A CN106546909B (en) | 2016-10-29 | 2016-10-29 | Bearing device for checking welding quality of circuit board chips |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106546909A CN106546909A (en) | 2017-03-29 |
| CN106546909B true CN106546909B (en) | 2024-03-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610970898.4A Active CN106546909B (en) | 2016-10-29 | 2016-10-29 | Bearing device for checking welding quality of circuit board chips |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106546909B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107621605B (en) * | 2017-09-30 | 2024-02-20 | 尼得科凯宇汽车电器(江苏)有限公司 | Simple device for testing motor fatigue |
| CN110333373A (en) * | 2019-07-11 | 2019-10-15 | 成都宏科电子科技有限公司 | A kind of chip capacity S parameter test fixture and test method |
| CN114416433B (en) * | 2022-03-30 | 2022-08-16 | 山东中颖智超数据科技有限公司 | Flash memory chip data recovery device |
| CN115448041B (en) * | 2022-09-26 | 2024-05-03 | 上海轩田智能科技股份有限公司 | Automatic distribution whole line for product manufacturing |
| CN115436673B (en) * | 2022-10-14 | 2023-10-27 | 苏州润明恩电子科技有限公司 | Jig for automobile test |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04130441U (en) * | 1991-05-23 | 1992-11-30 | 株式会社電子技研 | Jig for soldering inspection |
| CN1121368A (en) * | 1993-04-21 | 1996-04-24 | 欧姆龙株式会社 | Visual inspection support apparatus, substrate inspection apparatus, and soldering inspection and correction methods using the same apparatuses |
| CN206132933U (en) * | 2016-10-29 | 2017-04-26 | 宁波双林汽车部件股份有限公司 | Test circuit board chip welding quality's bears device |
-
2016
- 2016-10-29 CN CN201610970898.4A patent/CN106546909B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04130441U (en) * | 1991-05-23 | 1992-11-30 | 株式会社電子技研 | Jig for soldering inspection |
| CN1121368A (en) * | 1993-04-21 | 1996-04-24 | 欧姆龙株式会社 | Visual inspection support apparatus, substrate inspection apparatus, and soldering inspection and correction methods using the same apparatuses |
| CN206132933U (en) * | 2016-10-29 | 2017-04-26 | 宁波双林汽车部件股份有限公司 | Test circuit board chip welding quality's bears device |
Non-Patent Citations (1)
| Title |
|---|
| 欧阳高飞等.电子元件焊接质量的自动光学检测系统研究.《机械设计与制造》.2011,全文. * |
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| CN106546909A (en) | 2017-03-29 |
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