CN115739705B - Full-automatic circuit board test equipment - Google Patents
Full-automatic circuit board test equipment Download PDFInfo
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- CN115739705B CN115739705B CN202211446704.2A CN202211446704A CN115739705B CN 115739705 B CN115739705 B CN 115739705B CN 202211446704 A CN202211446704 A CN 202211446704A CN 115739705 B CN115739705 B CN 115739705B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
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Abstract
The invention relates to the technical field of circuit board testing equipment, in particular to full-automatic circuit board testing equipment, which comprises a bracket, a probe, a mould box, a top cover, a power unit, an auxiliary unit, a transmission unit and a control unit, wherein the probe is arranged on the bracket; the bottom of the bracket is fixedly provided with a die box; an auxiliary unit is fixedly arranged at the top of the bracket; a transmission unit is movably arranged above the auxiliary unit; the probe is fixedly arranged on the power unit; the power unit is fixedly arranged in the model; the top cover is movably arranged right above the die box; the power unit and the transmission unit are electrically connected with the control unit; the invention can detect circuit boards with different sizes and holes with different sizes on the circuit boards, and can detect electronic components on the circuit boards, and the probe can realize the decompression function by itself during detection, thereby preventing the damage to the circuit boards caused by the probe, and the probe can also detect the conductivity by itself, thereby improving the working efficiency and saving the manufacturing cost.
Description
Technical Field
The invention relates to the technical field of circuit board testing equipment, in particular to full-automatic circuit board testing equipment.
Background
Along with the rapid development of society, electronic products are spread over the life of people, whether living or working, the electronic products are visible everywhere, so that the working mode of people is changed, and the living standard of people is improved, but in the production process of electronic products, the production and the manufacture of circuit boards have high requirements, the circuit boards are a supporting body and a connecting body, so that the test of the circuit boards is an important process, the follow-up work is determined, the product is formed, complicated and dense circuits are arranged on the circuit boards, each circuit needs to be tested, the normal conduction of the circuits on the circuit boards is ensured, a plurality of holes are formed on the circuit boards, and whether the holes on the circuit boards conduct electricity also determines the installation of follow-up electronic components.
In the traditional circuit board testing process, each circuit on the circuit board is basically tested manually, so that time and labor are wasted, the conditions of missing test or repeated test and the like are likely to occur, the efficiency is low, the quality is not guaranteed, and in this way, the prior art discloses a circuit board tester, such as Chinese patent invention: CN103777042a (publication: 2014-05-07) discloses a rising circuit board tester, including a testing box, the testing box includes a bottom plate, a top plate and side plates arranged between the bottom plate and the top plate, a fixed plate, an ejector plate, a handle, a horizontal moving plate and a vertical moving plate, the ejector plate and the fixed plate are arranged between the two side plates from top to bottom in sequence, an opening is arranged on the fixed plate, the vertical fixed plate passes through the opening to be connected with the bottom surface of the ejector plate, a probe is arranged on the ejector plate, a handle is arranged below the fixed plate, a horizontal moving plate is arranged on a horizontal rod of the handle, a chute is arranged on the vertical moving plate, rollers on the side surfaces of the horizontal moving plate are arranged in the chute and can slide along the chute, the tester solves the problem of testing by manpower, and has simple structure, convenient use, but also needs to operate manually, the probe on the top plate can only test the circuit board of the same type, and has limitation on the size testing of holes of different circuit boards.
Various electronic components can be installed on the circuit board after the circuit board is tested to be qualified, after the electronic components are installed, various different components on the circuit board are required to be tested so as to ensure that the various different electronic components can normally work and run, and for the test of the electronic components on the circuit board, the prior art provides some solutions, such as Chinese patent invention: CN107255783B (publication day 2020-02-18) discloses a flying probe testing device, which comprises a supporting base, an X-direction unit, a Y-direction unit and a probe loading unit; the X-direction unit and the Y-direction unit are arranged on the supporting base, and the probe load unit is arranged on the Y-direction unit; the supporting base comprises a rear supporting base and a front supporting base, and is fixed on the flying probe testing platform in parallel; the rear rail pair is arranged on the rear supporting base, the front rail pair is arranged on the front supporting base, and the plurality of X-direction units are arranged on the supporting base; the backup pad on the Y to the unit sets up on the track pair on supporting the base, the device has solved traditional manual work to the test of electronic components on the circuit board, work efficiency has been improved, and fly needle positioning accuracy, but the device when the soldering tin position of electronic components on the test circuit board, when the high-speed motion contact of needle through flying leads to the soldering tin position to damage, lead to electronic components to be nonconductive, perhaps lead to the fact the soldering tin position to appear little pit, lead to the product outward appearance to have defects, and fly needle test time, need carry out one-to-one to a plurality of soldering tin.
Along with the development of scientific technology, a great leap also occurs in the test of circuit board products, and the test gradually progresses from the traditional manual test to the automatic mechanical test, such as the Chinese patent invention: CN110031750A (publication day: 2019-07-19) discloses a full-automatic circuit board testing device, which comprises a testing module, a feeding module and a discharging module; the test module comprises a test box and a pressing plate, wherein a test assembly is arranged in the test box, a test area is arranged on the top surface of the test box, a test terminal of the test assembly extends in the test area, the pressing plate is used for pressing and fixing a product to be tested to be electrically connected with the test terminal, the feeding module comprises a feeding manipulator and a first supporting platform used for placing a first material tray, the first material tray is internally provided with the product to be tested, the feeding module comprises a feeding manipulator and a second supporting platform used for placing a second material tray, the second material tray is internally provided with the tested product, the equipment realizes mechanical automatic test, and the pressing plate is used for pressing down an electrical terminal on a circuit board to be electrically connected with the test terminal on the test box, so that the test of the circuit board is realized, the test efficiency is improved, but the test of the equipment can only test the circuit board of the same type and the circuit board of different types and sizes.
In view of the above-mentioned shortcomings, the present invention improves and optimizes the existing full-automatic circuit board testing equipment, and develops a full-automatic circuit board testing equipment.
Disclosure of Invention
The invention aims to solve the technical problems that: the invention provides full-automatic circuit board testing equipment, which not only can detect circuit boards with different sizes, but also can detect holes with different sizes on the circuit boards, meanwhile, can detect electronic components on the circuit boards, can realize the decompression effect by a probe when detecting the electronic components, prevents the probe from damaging the circuit boards, can realize the detection of self conductivity, is suitable for detecting the circuit boards with different sizes, improves the working efficiency and saves the manufacturing cost.
The invention provides the following technical scheme: a full-automatic circuit board testing device comprises a bracket, a probe, a mould box, a top cover, a power unit, an auxiliary unit, a transmission unit and a control unit; the bottom of the bracket is fixedly provided with a die box; an auxiliary unit is fixedly arranged at the top of the bracket; the auxiliary unit is used for auxiliary clamping of circuit boards with different sizes; a transmission unit is movably arranged above the auxiliary unit; the transmission unit is used for conveying the circuit board; the probe is fixedly arranged on the power unit; the power unit is used for controlling the probe to stretch and retract; the probe is used for detecting the circuit board; the power unit is fixedly arranged in the model; the top cover is movably arranged right above the die box; the top cover is used for detecting whether the probe is conductive or not; the control unit is used for controlling the power unit and the transmission unit; the power unit and the transmission unit are electrically connected with the control unit.
Preferably, the probe comprises a conical probe, an elastic cylinder, a conductive ring, a hollow needle body and a string; the top of the hollow needle body is fixedly arranged with the bottom of the elastic cylinder; the concrete installation mode adopts the bonding YH-395 glue to carry out the bonding; the elastic cylinder is a hollow cylinder; the top of the elastic cylinder is fixedly provided with a conical probe; the concrete installation mode adopts the bonding YH-395 glue to carry out the bonding; an annular groove is formed below the top of the outer surface of the hollow needle body; a conductive ring is fixedly arranged in the annular groove on the outer surface of the hollow needle body; the inner diameter of the conducting ring is slightly smaller than the diameter of the annular groove on the outer surface of the hollow needle body; the concrete installation mode adopts clamping installation; one end of the string is fixedly connected to the bottom of the conical probe; the concrete connection mode adopts a game YH-395 glue to carry out gluing; the diameter of the probe is slightly smaller than the diameter of the hole on the circuit board; the diameter of the hole on the circuit board is determined according to the thickness of the circuit board; the maximum deformation diameter of the elastic cylinder is larger than the maximum diameter of the hole on the circuit board; the conical probe is used for detecting whether each component on the circuit board is damaged or not; the elastic cylinder is used for detecting the open-circuit and short-circuit conditions of the holes on the circuit board; the conducting ring is used for communicating with the probe so that current can pass through the probe; the string is used to control the shape of the elastic cylinder.
Preferably, the inside of the die box is of a hollow structure; the top of the die box is provided with a plurality of stepped holes in an array; the inner wall of the upper part of the stepped hole is fixedly provided with a conductive circular ring; the outer diameter of the conductive circular ring is slightly larger than the diameter of the upper part of the stepped hole; the concrete installation mode adopts clamping installation; the inner diameter of the conductive circular ring is the same as the inner diameter of the lower part of the stepped hole, and a probe is slidably arranged in the stepped hole; a conductive circular ring is fixedly arranged on the inner wall of the upper part of the stepped hole and used for electrifying the probe; and a wire is fixedly arranged in the top of the die box, and the conductive circular ring is fixedly connected with the wire.
Preferably, a plurality of metal discs are fixedly arranged on the bottom array of the top cover; the metal disc is specifically arranged at the bottom of the top cover in a welding way; the metal discs are in one-to-one correspondence with the probes on the die box; the diameter of the metal wafer is smaller than the radial diameter of the probe; the metal wafer on the top cover corresponds to the probes on the die box one by one to detect the conductivity of the probes.
Preferably, the power unit comprises an electric push rod, a cylindrical sleeve and an electric telescopic rod; the electric push rods are fixedly arranged at the bottom of the die box in an array manner; the cylindrical sleeves are fixedly arranged at the top of the electric push rod; the electric telescopic rods are fixedly arranged in the cylindrical sleeve; the tops of the electric telescopic rods are fixedly connected with the other end of the string; the concrete connection mode adopts a game YH-395 glue to carry out gluing; the electric push rod is used for controlling the probe to stretch out and draw back, the conical probe at the top of the probe is in contact with soldering tin points on the circuit board, and the periphery of the outer side of the elastic cylinder is in contact with holes on the circuit board.
Preferably, the auxiliary unit comprises a connecting frame, a screw and a ball sleeve; the connecting frame is of a cuboid structure; rectangular bumps are respectively arranged at two ends of the top of the connecting frame; the bottom of the connecting frame is fixedly arranged on the bracket; the two ends of the lead screw are fixedly arranged at the center positions of the rectangular convex blocks at the two ends of the connecting frame; a ball sleeve is arranged on the lead screw in a sliding manner; the ball sleeve is adopted to reduce friction, so that the moving distance of the ball sleeve on the screw rod is accurate; a gear is arranged on the outer surface of the ball sleeve; the outer surface of the ball sleeve is provided with a gear so that the transmission unit can control the gear to rotate.
Preferably, the transmission unit comprises a rectangular frame, a turntable, a servo motor, a rotating wheel and a belt; rectangular grooves are respectively formed in the upper parts of one side face of the two rectangular frames; a plurality of round holes are respectively formed in the lower parts of the same side face of the two rectangular frames; the round holes are adjacent to each other in the middle of the rectangular frame, two ends of the rectangular frame are respectively provided with two round holes, and the two round holes form a certain distance; the lower parts of the two rectangular frames are hollow structures; rectangular boxes are symmetrically arranged at two ends of the bottom of each rectangular frame respectively; the distance between the two rectangular boxes is larger than the side length of the die box; the distance between the rectangular boxes is larger than the side length of the die box, so that the two rectangular boxes can be fixedly installed with the ball sleeve on the screw rod of the auxiliary unit; a rotating motor is fixedly arranged in the rectangular box; a gear is fixedly arranged on the rotating motor; the rotating motor is used for controlling the rectangular frame to move on the screw rod; the top ends of the side edges of the turntables are provided with outward bulges; the top end of the side edge of the turntable is provided with an outward bulge for clamping the circuit board; the turntables are rotatably arranged in the rectangular grooves on the side surfaces of the rectangular frames; the servo motors are respectively and fixedly arranged in the lower parts of the rectangular frames, and the rotating shafts of the servo motors are respectively and rotatably arranged with the round holes; the rotating wheels are fixedly arranged on the rotating shafts of the servo motors respectively; belts are respectively rotatably arranged on the two rotating wheels on the side surfaces of the two ends of the two rectangular frames; the belt is made of rubber; the belt is used for transporting the circuit board through rotation of the rotating wheel, and the rotating wheel can be used for transporting the circuit board and adjusting the position of the circuit board.
Preferably, the bottom of the top cover is fixedly provided with a visual sensor; the visual sensor is electrically connected with the control unit; the vision sensor is used for detecting the position of the circuit board and the position of the hole on the circuit board, and detecting the position of the circuit board or the soldering tin position of each electronic component on the circuit board through the vision sensor.
Preferably, the auxiliary unit is fixedly provided with a displacement sensor; the displacement sensor is electrically connected with the control unit; the displacement sensor is used for detecting the moving distance of the transmission unit.
Preferably, a layer of copper film is respectively plated on the conical probe at the top of the probe and the outer surface of the elastic cylinder; the conical probe at the top of the probe and copper plating on the outer surface of the elastic cylinder are used for electrifying the probe when detecting the circuit board, and detecting the short circuit and open circuit condition of each hole on the circuit board through the conical probe and the elastic cylinder, and detecting whether the electronic components on the circuit board are damaged.
The beneficial effects of the invention are as follows:
1. according to the invention, the electric push rod is fixedly arranged at the bottom of the die box, the top of the electric push rod is fixedly arranged at the bottom of the cylindrical sleeve, the electric telescopic rod is fixedly arranged in the cylindrical sleeve, the probe is fixedly arranged at the top of the cylindrical sleeve, and comprises a conical probe, an elastic cylinder, a conductive ring, a hollow needle body and a string, wherein the top of the hollow needle body is fixedly arranged at the bottom of the elastic cylinder; the top of the elastic cylinder is fixedly provided with a conical probe; an annular groove is formed below the top of the outer surface of the hollow needle body; a conductive ring is fixedly arranged in the annular groove on the outer surface of the hollow needle body; the utility model discloses a wire rope, wire rope one end fixed connection is in the toper probe bottom, and wire rope other end fixed connection is at electric telescopic handle top, has realized whether can detect each electronic components on the circuit board through probe top toper probe and damage, realizes the decompression through elastic cylinder simultaneously, has prevented that the toper probe from causing the damage to the soldering tin department on the circuit board, also can detect the hole of equidimension on the circuit board through elastic cylinder, need not change the probe, has improved the efficiency of detection.
2. According to the invention, the transmission unit is movably arranged above the auxiliary unit, the visual sensor is fixedly arranged at the bottom of the top cover, the displacement sensors are fixedly arranged on the auxiliary unit and the transmission unit respectively, the distance between the rectangular frames on the transmission unit is adjusted through the lead screw on the auxiliary unit, so that circuit boards with different sizes can be detected through visual legends and the distance between the rectangular frames is adjusted, the positions of holes on the circuit boards and the soldering tin positions of all electronic components can be detected through the visual sensor, the micro-movement of the transmission unit on the auxiliary unit and the micro-movement of the circuit boards on the transmission unit are controlled through the control unit, the holes and the soldering tin positions are respectively in one-to-one correspondence with the probes, the circuit boards are prevented from being damaged due to the fact that the holes and the soldering tin positions are not in correspondence with the probes, the circuit boards with various sizes are simultaneously applicable, the manufacturing cost is saved, and the working efficiency is improved.
3. According to the invention, the plurality of metal discs are fixedly arranged at the bottom of the top cover in an array manner, the metal discs are in one-to-one correspondence with the probes on the die box, so that automatic detection of the probes is realized, in the long-time use process, the top conductive performance of the probes is possibly poor and damaged, the detection of the conductivity of the probes is realized through the mutual contact between the metal discs at the bottom of the top cover and the probes, the unqualified probes can be displayed on a computer screen, the disassembly and the installation are convenient, and the detection errors of a circuit board due to overlong use time and incapability of observing by naked eyes are prevented.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic perspective view of the present invention.
Fig. 2 is a schematic perspective view of the roof-less structure of the present invention.
Fig. 3 is a front view of fig. 2.
Fig. 4 is a top view of fig. 2.
Fig. 5 is a left side view of fig. 2.
Fig. 6 is a schematic perspective view of the electric putter and the probe according to the present invention.
Fig. 7 is a schematic perspective view of the transmission unit of the present invention.
Fig. 8 is a partial cross-sectional view of a servo motor inside a rectangular frame of the present invention.
Fig. 9 is a partial cross-sectional view of the rotary motor in a rectangular box of the present invention.
FIG. 10 is a cross-sectional view of a stepped bore in the top of the mold box of the present invention.
FIG. 11 is a partial cross-sectional view of a probe of the present invention.
Fig. 12 is a top view of the present invention.
Fig. 13 is a partial cross-sectional view of an elastic cylindrical deformation of the present invention.
In the figure: the device comprises a bracket 1, a probe 2, a conical probe 21, an elastic cylinder 22, a conductive ring 23, a hollow needle body 24, a string 25, an annular groove 26, a die box 3, a stepped hole 31, a conductive ring 32, a top cover 4, a metal disc 41, a power unit 5, an electric push rod 51, a cylinder sleeve 52, an electric telescopic rod 53, an auxiliary unit 6, a connecting frame 61, a screw 62, a ball sleeve 63, a rectangular lug 64, a transmission unit 7, a rectangular frame 71, a turntable 72, a servo motor 73, a rotating motor 74, a rotating wheel 75, a belt 76, a rectangular groove 77 and a rectangular box 78.
Detailed Description
In order to better understand the above technical solutions, the following detailed description will refer to the accompanying drawings and specific embodiments.
The first embodiment is as follows: as shown in fig. 11, in one embodiment, a circuit board for detecting that an electronic component has been soldered to the circuit board; the probe 2 is pushed by an electric push rod 51; the probe 2 is lifted a certain distance; the conical probe 21 at the top of the probe 2 is contacted with a soldering tin position on the circuit board; the probe 2 is electrified to detect electronic components on the circuit board, and when the conical probe 21 contacts with the soldering tin position, the elastic cylinder 22 is deformed when being axially subjected to certain pressure, so that the decompression effect is realized, and the soldering tin position is prevented from being damaged.
As shown in fig. 1 and 6, a full-automatic circuit board testing device comprises a bracket 1, a probe 2, a die box 3, a top cover 4, a power unit 5, an auxiliary unit 6, a transmission unit 7 and a control unit; the bottom of the bracket 1 is fixedly provided with a die box 3; an auxiliary unit 6 is fixedly arranged at the top of the bracket 1; the auxiliary unit 6 is used for auxiliary clamping of circuit boards with different sizes; a transmission unit 7 is movably arranged above the auxiliary unit 6; the transmission unit 7 is used for conveying a circuit board; the probe 2 is fixedly arranged on the power unit 5; the power unit 5 is used for controlling the extension and retraction of the probe 2; the probe 2 is used for detecting a circuit board; and the power unit 5 is fixedly arranged in the model; the top cover 4 is movably arranged right above the die box 3; the top cover 4 is used for detecting whether the probe 2 is conductive or not; the control unit is used for controlling the power unit 5 and the transmission unit 7; the power unit 5 and the transmission unit 7 are electrically connected with the control unit; through each unit of control unit control for each unit can mutually support, mutually noninterfere's operation realizes the full automated inspection to the circuit board, if detect ineligibly, and the control unit can distinguish ineligible circuit board, and shows the ineligible position on the circuit board on the computer screen.
As shown in fig. 1, 2, 3, 4, 5, 11 and 13, the probe 2 includes a conical probe 21, an elastic cylinder 22, a conductive ring 23, a hollow needle 24 and a string 25; the top of the hollow needle body 24 is fixedly arranged with the bottom of the elastic cylinder 22, and the concrete installation mode adopts Yihe YH-395 glue for gluing; the elastic cylinder 22 is a hollow cylinder; the top of the elastic cylinder 22 is fixedly provided with a conical probe 21, and the concrete installation mode adopts Yihe YH-395 glue for gluing; an annular groove 26 is formed below the top of the outer surface of the hollow needle body 24; the conductive ring 23 is fixedly arranged in the annular groove 26 on the outer surface of the hollow needle body 24; the inner diameter of the conductive ring 23 is slightly smaller than the diameter of the annular groove 26 on the outer surface of the hollow needle 24; the specific installation mode adopts clamping installation, and one end of the string 25 is fixedly connected to the bottom of the conical probe 21; the concrete connection mode adopts a game YH-395 glue to carry out gluing; the diameter of the probe 2 is slightly smaller than the diameter of the hole on the circuit board; the diameter of the hole on the circuit board is determined according to the thickness of the circuit board; the maximum deformation diameter of the elastic cylinder 22 is larger than the maximum diameter of the hole on the circuit board; the conical probe 21 is used for detecting whether each component on the circuit board is damaged or not; the conductive ring 23 is used for communicating with the probe 2 so that current can pass through the probe 2; when the probe 2 detects the soldering positions of various electronic components on the circuit board, the elastic cylinder 22 plays a good role in reducing pressure, when the probe 2 stretches out, the conical probe 21 at the top of the probe 2 is in contact with the soldering position of the circuit board, damage can be caused to the soldering position of the circuit board, and when the pressure reaches a certain value, the elastic cylinder 22 deforms, so that the pressure is reduced, and the conical probe 21 cannot damage the soldering position of the circuit board.
As shown in fig. 1, 2, 3, 4, 5 and 10, the inside of the die box 3 is a hollow structure; a plurality of stepped holes 31 are formed in the top of the die box 3 in an array manner; a conductive circular ring 32 is fixedly arranged on the inner wall of the upper part of the stepped hole 31; the outer diameter of the conductive circular ring 32 is slightly larger than the diameter of the upper part of the stepped hole 31; the concrete installation mode adopts clamping installation; the inner diameter of the conductive circular ring 32 is the same as the inner diameter of the lower part of the stepped hole 31, and the probe 2 is slidably arranged in the stepped hole 31; a conductive circular ring 32 is fixedly arranged on the inner wall of the upper part of the stepped hole 31 and used for electrifying the probe 2; a wire is fixedly arranged in the top of the die box 3, and the conductive circular ring 32 is fixedly connected with the wire; the wire is fixedly arranged in the top of the die box 3, so that friction between the wire and the probe 2 or friction between the wire and the wire is avoided in the process of stretching the probe 2, and meanwhile, the space in the die box 3 is also saved.
As shown in fig. 1 and 12, a plurality of metal discs 41 are fixedly arranged on the bottom array of the top cover 4; the metal disc 41 is specifically arranged by welding at the bottom of the top cover 4; the metal discs 41 are in one-to-one correspondence with the probes 2 on the mold box 3; and the diameter of the metal disc 41 is smaller than the radial diameter of the probe 2; the one-to-one correspondence between the metal disc 41 on the top cover 4 and the probe 2 on the mold box 3 is used for detecting the conductivity of the probe 2, when the probe 2 is used for a long time, the probe 2 may be damaged and not conductive, and the top of the probe 2 is tiny and difficult to observe by naked eyes, so that the metal disc 41 on the top cover 4 and the top of the probe 2 are mutually contacted and electrified, and whether the probe 2 is conductive or not can be accurately detected, thereby judging whether the probe 2 is damaged or not.
As shown in fig. 6, 11 and 13, the power unit 5 includes an electric push rod 51, a cylindrical sleeve 52 and an electric telescopic rod 53; the plurality of electric push rods 51 are fixedly arranged at the bottom of the die box 3 in an array arrangement; a plurality of cylindrical sleeves 52 are fixedly arranged on the top of the electric push rod 51; a plurality of electric telescopic rods 53 are fixedly arranged inside the cylindrical sleeve 52; the tops of the electric telescopic rods 53 are fixedly connected with the other end of the string 25; the concrete connection mode adopts a game YH-395 glue to carry out gluing; the electric push rod 51 is used for controlling the extension and retraction of the probe 2, when the circuit board is positioned on the die box 3, the electric push rod 51 is used for controlling the probe 2 to extend out, so that the conical probe 21 at the top of the probe 2 is contacted with the soldering tin point of the circuit board, or the conical probe 21 at the top of the probe 2 passes through a hole on the circuit board, and when the hole on the circuit board is positioned at the middle position of the elastic cylinder 22 on the probe 2, the conical probe 21 at the top of the elastic cylinder 22 is pulled by the string 25 on the electric telescopic rod 53, so that the periphery of the elastic cylinder 22 is radially deformed outwards, and is contacted with the hole on the circuit board; the detection of the circuit board is realized.
As shown in fig. 1, 2, 3, 4 and 9, the auxiliary unit 6 includes a link 61, a screw 62 and a ball sleeve 63; the connecting frame 61 is of a cuboid structure; rectangular protruding blocks 64 are respectively arranged at two ends of the top of the connecting frame 61; the bottom of the connecting frame 61 is fixedly arranged on the bracket 1; the two ends of the screw rod 62 are fixedly arranged at the center positions of rectangular convex blocks 64 at the two ends of the connecting frame 61; a ball sleeve 63 is slidably mounted on the screw 62; the ball sleeve 63 is adopted to reduce friction, so that the moving distance of the ball sleeve 63 on the screw 62 is accurate; and a gear is provided on the outer surface of the ball sleeve 63; the outer surface of the ball sleeve 63 is provided with a gear so that the transmission unit 7 can control the gear to rotate, thereby realizing the movement of the transmission unit 7 on the screw 62, and when circuit boards with different sizes are detected, the movement of the transmission unit 7 can be controlled by controlling the movement of the ball sleeve 63, so that the transmission unit 7 clamps the circuit boards with different sizes.
As shown in fig. 1, 2, 3, 4, 5, 7, 8 and 9, the transmission unit 7 includes a rectangular frame 71, a turntable 72, a servo motor 73, a rotation motor 74, a rotating wheel 75 and a belt 76; a rectangular groove 77 is respectively formed on one side surface of each of the two rectangular frames 71; a plurality of round holes are respectively formed in the lower parts of the same side face of the two rectangular frames 71; the round holes are adjacent to each other in the middle of the rectangular frame 71, and two ends of the rectangular frame 71 are respectively provided with two round holes, and the two round holes are at a certain distance; the lower parts of the two rectangular frames 71 are hollow structures; rectangular boxes 78 are symmetrically arranged at two ends of the bottom of the two rectangular frames 71 respectively; and the distance between two said rectangular boxes 78 is greater than the side length of the mould box 3; the distance between the rectangular boxes 78 is greater than the side length of the die box 3 so that the two rectangular boxes 78 can be fixedly mounted with the ball sleeve 63 on the screw 62 of the auxiliary unit 6; a rotating motor 74 is fixedly arranged inside the rectangular box 78; a gear is fixedly arranged on the rotating motor 74; the rotating motor 74 is used for controlling the rectangular frame 71 to move on the screw 62; the top ends of the side edges of the turntables 72 are provided with outward bulges; the top of the side edge of the turntable 72 is provided with an outward projection for catching the circuit board.
When the circuit board is conveyed to the rotating wheel 75 through the belt 76, the probe 2 starts to ascend, and when the conical probe 21 at the top of the probe 2 props against the circuit board, the two sides of the circuit board possibly break away from the rotating wheel 75 to damage the circuit board, so that the bulge at the edge of the rotating disc 72 is used for clamping the circuit board to prevent the circuit board from breaking away, and when the rotating wheel 75 rotates to drive the circuit board to move, the two side edges of the circuit board also move at the bottom of the rotating disc 72 and simultaneously drive the rotating disc 72 to rotate; a plurality of turntables 72 are rotatably arranged in rectangular grooves 77 on the side surfaces of the rectangular frames 71; a plurality of servo motors 73 are fixedly installed in the lower part of the rectangular frame 71 respectively, and the rotating shafts of the servo motors 73 are rotatably installed with the circular holes respectively; the rotating wheels 75 are fixedly installed on the rotating shafts of the servo motors 73 respectively; belts 76 are respectively rotatably installed on two rotating wheels 75 on the side surfaces of two ends of the rectangular frame 71; the belt 76 is made of rubber; the belt 76 is used for transporting the circuit board through the rotation of the rotating wheel 75, the rotating wheel 75 can also adjust the position of the circuit board when transporting the circuit board, when the circuit board is transported to the rotating wheel 75 through the belt 76, the vision sensor can detect the circuit board and send signals to the control unit, the control unit receives the signals sent by the vision sensor and can analyze and image the signals, the control unit matches the processed and imaged signals with the position signals of the probe 2 on the mold box 3, if the processed and imaged signals are not matched with the position signals, the control unit can control the servo motor 73 in the middle of the rectangular frame 71 to rotate, the servo motor 73 controls the rotating wheel 75 to rotate, and the rotating wheel 75 drives the circuit board to move, so that the position of the circuit board is accurately adjusted.
The visual sensor is fixedly arranged at the bottom of the top cover 4; the visual sensor is electrically connected with the control unit; the vision sensor is used for detecting the position of the circuit board and the position of the hole on the circuit board, detecting the position of the upper air of the circuit board or detecting the soldering tin position of each electronic component on the circuit board, then the control unit processes and images the signals sent by the vision sensor, the control unit matches the processed and imaged information with the position information of the probe 2 on the mold box 3, and the control unit controls the transmission unit 7 and the auxiliary unit 6 to move, so that the hole on the circuit board or the soldering tin position of each electronic component on the circuit board corresponds to the probe 2 one by one.
A displacement sensor is fixedly arranged on the auxiliary unit 6; the displacement sensor is electrically connected with the control unit; the displacement sensor is used for detecting the moving distance of the transmission unit 7; according to the size of the circuit board, the distance between the two rectangular frames 71 of the transmission unit 7 can be accurately adjusted through the displacement sensor, so that circuit boards with different sizes can be placed, when the circuit boards are detected, the two rectangular frames 71 can also move towards the same direction at the same time, and when holes on the circuit boards do not correspond to the probes 2 one by one, the two rectangular frames 71 can be finely adjusted, so that the holes on the circuit boards correspond to the probes 2 one by one.
As shown in fig. 11, the outer surfaces of the conical probe 21 and the elastic cylinder 22 at the top of the probe 2 are respectively plated with a copper film; the copper plating on the outer surfaces of the conical probe 21 and the elastic cylinder 22 at the top of the probe 2 is used for electrifying the probe 2 when detecting a circuit board, and detecting the short circuit and open circuit conditions of all holes on the circuit board through the conduction of the conical probe 21 and the elastic cylinder 22, and detecting whether the electronic components on the circuit board are damaged or not; the copper films on the outer surfaces of the conical probe 21 and the elastic cylinder 22 may be worn out in the long-time use process, so that poor conduction is caused, and at this time, the conductivity of the probe 2 can be maintained by only taking down the conical probe 21 and the elastic cylinder 22 and then plating a layer of copper film again, and the whole probe 2 is not required to be disassembled, so that the use and maintenance are convenient and quick.
When the electronic component on the circuit board is detected, the circuit board is in a feeding area, the size of the circuit board is detected through a visual sensor, the visual sensor sends signals to a control unit, the control unit receives the signals to control a rotating motor 74 at the bottom of two rectangular frames 71 to rotate inwards, so that the rectangular frames 71 are driven to move on a lead screw 62, the distance between the two rectangular frames 71 is detected through a displacement sensor, the circuit board is enabled to be slightly larger than one side of the circuit board, the circuit board is moved onto a belt 76 through a feeding device, the servo motor 73 at the same end of the two rectangular frames 71 simultaneously rotates to drive the belt 76 to rotate, the belt 76 drives the circuit board to move, when one end of the circuit board contacts with a rotating wheel 75, the servo motor 73 at the middle position of the two rectangular frames 71 simultaneously rotates to drive the rotating wheel 75 to drive the circuit board to move, when the circuit board moves to be right above a die box 3, the visual sensor at the bottom of a top cover 4 starts to detect the soldering tin position of each electronic component on the circuit board, and sends signals to the control unit, and the control unit processes the signals and matches the position signals on the die box 2; if the matching is not completed, the control unit controls the servo motor 73 in the middle of the two rectangular frames 71 to rotate slightly, so that the rotating wheel 75 is controlled to rotate slightly, the rotating wheel 75 drives the circuit board to move slightly, meanwhile, the control unit controls the rotating motor 74 in the two rectangular boxes 78 at the bottoms of the two rectangular frames 71 to rotate slightly, the rotating motor 74 drives the ball sleeve 63 to move slightly, and the control unit controls the servo motor 73 and the rotating motor 74 to stop rotating simultaneously until the soldering tin positions of all electronic components on the circuit board correspond to the positions of the probes 2 on the mold box 3 one by one.
At this time, the electric push rod 51 pushes out the probe 2, the conical probe 21 at the top of the probe 2 is contacted with the soldering tin position on the circuit board, the electric push rod 51 stops moving, the probe 2 is electrified to detect each component on the circuit board, and when the probe 2 is contacted with the soldering tin position of the circuit board, the elastic cylinder 22 plays a role of decompression, so that the soldering tin position is not damaged by the conical probe 21, after detection, the electric push rod 51 returns to the original position, the control unit controls the servo motor 73 at the middle position of the rectangular frame 71 and the rotating motor 74 at the other end to rotate, the circuit board moves onto the belt 76 through the rotating wheel 75, the belt 76 conveys the circuit board to the tail end, the rotating wheel 75 and the belt 76 stop rotating, the circuit board moves to the corresponding area through the blanking device, if the detected circuit board is unqualified, the blanking device of the blanking area places the circuit board in the unqualified area, and the blanking device of the blanking area places the circuit board in the qualified area if the detected circuit board is qualified, and the next procedure is carried out.
The second embodiment is as follows: as shown in fig. 13, the second embodiment is different from the first embodiment in that the second embodiment is used for detecting an unwelded circuit board hole, and the probe 2 is pushed by an electric push rod 51; the probe 2 is raised; and the probe 2 passes through a hole on the circuit board; the middle position of the elastic cylinder 22 is positioned in the hole; the electric push rod 51 stops moving; the probe 2 stops ascending; the electric telescopic rod 53 pulls the string 25; the string 25 pulls the cone probe 21 to move downward; the periphery of the elastic cylinder 22 deforms radially outwards; the elastic cylinder 22 is fully contacted with the hole on the circuit board; energizing the probe 2; the current flows to the circuit board through the elastic cylinder 22, so that the circuit board is detected, and the deformation degree of the elastic cylinder 22 is different according to the circuit boards with different sizes and the different sizes of holes on the circuit board, so that the conductive effect is better.
When the device is in operation, when a hole on a circuit board is detected, the circuit board is in a feeding area, the size of the circuit board is detected through a visual sensor, the visual sensor sends a signal to a control unit, the control unit receives the signal to control a rotating motor 74 with the bottoms of two rectangular frames 71 in an inward direction to rotate, thereby driving the rectangular frames 71 to move on a lead screw 62, the distance between the two rectangular frames 71 is detected through a displacement sensor, the circuit board is slightly larger than one side of the circuit board, the circuit board is moved onto a belt 76 through a feeding device, the servo motors 73 at the same end of the two rectangular frames 71 simultaneously rotate to drive the belt 76 to rotate, the belt 76 drives the circuit board to move, when one end of the circuit board contacts with the rotating wheel 75, the servo motors 73 at the middle position of the two rectangular frames 71 simultaneously rotate to drive the rotating wheel 75 to drive the circuit board to move, when the circuit board moves to the right above a die box 3, the visual sensor at the bottom of a top cover 4 starts to detect the position of each hole on the circuit board, and sends a signal to the control unit, and the control unit performs signal analysis and imaging to the signal to match with the position of a probe 2 on the die box 3; if the matching is not completed, the control unit controls the servo motor 73 in the middle of the two rectangular frames 71 to rotate slightly, so that the rotating wheel 75 is controlled to rotate slightly, the rotating wheel 75 drives the circuit board to move slightly, meanwhile, the control unit controls the rotating motor 74 in the two rectangular boxes 78 at the bottoms of the two rectangular frames 71 to rotate slightly, the rotating motor 74 drives the ball sleeve 63 to move slightly, and after the positions of all holes on the circuit board correspond to the positions of the probes 2 on the mold box 3 one by one, the control unit controls the servo motor 73 and the rotating motor 74 to stop rotating simultaneously.
At this time, the electric push rod 51 pushes out the probe 2, the conical probe 21 at the top of the probe 2 passes through the hole on the circuit board, when the hole is located at the middle position of the elastic cylinder 22, the electric push rod 51 stops moving, at this time, the electric telescopic rod 53 inside the cylindrical sleeve 52 at the top of the electric push rod 51 is contracted slightly, the periphery of the elastic cylinder 22 is deformed radially outwards by pulling the string 25 between the top of the electric telescopic rod 53 and the bottom of the conical probe 21, and the periphery of the elastic cylinder 22 is deformed to be in contact with the hole on the circuit board, the probe 2 is electrified, each hole on the circuit board is detected, after the detection is finished, the electric telescopic rod 53 inside the cylindrical sleeve 52 at the top of the electric push rod 51 returns to the original position, the string 25 between the top of the electric telescopic rod 53 and the bottom of the conical probe 21 is not retracted to the original position, the control unit controls the servo motor 73 at the middle position of the rectangular frame 71 and the rotating motor 74 at the other end to rotate, the circuit board is moved to the belt 76 by the rotating wheel 75, the belt 76 conveys the circuit board to the tail end, the rotating wheel 75 and the belt 76 stops rotating, the circuit board is moved to the corresponding area by the blanking device, if the circuit board is detected, the blanking device is located in the blanking area, and if the circuit board is detected in the blanking area is not qualified, the blanking area is placed, and the blanking device is judged, and the blanking area is judged, if the blanking area is qualified.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. A full-automatic circuit board testing device comprises a bracket (1), a probe (2), a die box (3), a top cover (4), a power unit (5), an auxiliary unit (6), a transmission unit (7) and a control unit; the method is characterized in that: the bottom of the bracket (1) is fixedly provided with a die box (3); an auxiliary unit (6) is fixedly arranged at the top of the bracket (1); the auxiliary unit (6) is used for auxiliary clamping of circuit boards with different sizes; a transmission unit (7) is movably arranged above the auxiliary unit (6); the transmission unit (7) is used for conveying the circuit board; the probe (2) is fixedly arranged on the power unit (5); the power unit (5) is used for controlling the extension and retraction of the probe (2); the probe (2) is used for detecting a circuit board; and the power unit (5) is fixedly arranged in the model; the top cover (4) is movably arranged right above the die box (3); the top cover (4) is used for detecting whether the probe (2) is conductive or not; the power unit (5) and the transmission unit (7) are electrically connected with the control unit;
the probe (2) comprises a conical probe (21), an elastic cylinder (22), a conductive ring (23), a hollow needle body (24) and a string (25); the top of the hollow needle body (24) is fixedly arranged at the bottom of the elastic cylinder (22); the elastic cylinder (22) is a hollow cylinder; the top of the elastic cylinder (22) is fixedly provided with a conical probe (21); an annular groove (26) is formed below the top of the outer surface of the hollow needle body (24); a conductive ring (23) is fixedly arranged in an annular groove (26) on the outer surface of the hollow needle body (24); one end of the string (25) is fixedly connected to the bottom of the conical probe (21).
2. The fully automatic circuit board testing apparatus of claim 1, wherein: the inside of the die box (3) is of a hollow structure; a plurality of stepped holes (31) are formed in the top of the die box (3) in an array manner; a conductive circular ring (32) is fixedly arranged on the inner wall of the upper part of the stepped hole (31); the inner diameter of the conductive circular ring (32) is the same as the inner diameter of the lower part of the stepped hole (31), and the probe (2) is slidably arranged in the stepped hole (31).
3. The fully automatic circuit board testing apparatus of claim 2, wherein: a plurality of metal wafers (41) are fixedly arranged at the bottom array of the top cover (4); the metal discs (41) are in one-to-one correspondence with the probes (2) on the die box (3); and the diameter of the metal disc (41) is smaller than the radial diameter of the probe (2).
4. A fully automated circuit board testing apparatus according to claim 3, wherein: the power unit (5) comprises an electric push rod (51), a cylindrical sleeve (52) and an electric telescopic rod (53); the plurality of electric push rods (51) are fixedly arranged at the bottom of the die box (3) in an array arrangement manner; the bottoms of the cylindrical sleeves (52) are fixedly arranged at the top of the electric push rod (51); a plurality of electric telescopic rods (53) are fixedly arranged inside the cylindrical sleeve (52); the top of the cylindrical sleeve (52) is fixedly provided with a probe (2); the tops of the electric telescopic rods (53) are fixedly connected with the other end of the string (25).
5. The fully automatic circuit board testing device of claim 4, wherein: the auxiliary unit (6) comprises a connecting frame (61), a screw (62) and a ball sleeve (63); the connecting frame (61) is of a cuboid structure; rectangular protruding blocks (64) are respectively arranged at two ends of the top of the connecting frame (61); the bottom of the connecting frame (61) is fixedly arranged on the bracket (1); two ends of the screw rod (62) are fixedly arranged at the center positions of rectangular convex blocks (64) at two ends of the connecting frame (61); a ball sleeve (63) is slidably arranged on the screw rod (62); and a gear is arranged on the outer surface of the ball sleeve (63).
6. The fully automatic circuit board testing device of claim 5, wherein: the transmission unit (7) comprises a rectangular frame (71), a turntable (72), a servo motor (73), a rotating motor (74), a rotating wheel (75) and a belt (76); a rectangular groove (77) is respectively formed in the upper parts of one side face of the two rectangular frames (71); the lower parts of the same side surfaces of the two rectangular frames (71) are respectively provided with a plurality of round holes; the round holes are adjacent to each other in the middle of the rectangular frame (71), two ends of the rectangular frame (71) are respectively provided with two round holes, and the two round holes form a certain distance; the lower parts of the two rectangular frames (71) are hollow structures; rectangular boxes (78) are symmetrically arranged at two ends of the bottoms of the two rectangular frames (71) respectively; and the distance between the two rectangular boxes (78) is larger than the side length of the die box (3); a rotating motor (74) is fixedly arranged in the rectangular box (78); a gear is fixedly arranged on the rotating motor (74); the top ends of the side edges of the turntables (72) are provided with outward bulges; a plurality of turntables (72) are rotatably arranged in rectangular grooves (77) on the side surfaces of the rectangular frames (71); the servo motors (73) are respectively and fixedly arranged in the lower parts of the rectangular frames (71), and the rotating shafts of the servo motors (73) are respectively and rotatably arranged with the round holes; the rotating wheels (75) are fixedly arranged on the rotating shafts of the servo motors (73) respectively; belts (76) are respectively rotatably arranged on rotating wheels (75) on the side surfaces of two ends of the rectangular frames (71).
7. The fully automatic circuit board testing apparatus of claim 6, wherein: the bottom of the top cover (4) is fixedly provided with a visual sensor; the vision sensor is electrically connected with the control unit.
8. The fully automatic circuit board testing apparatus of claim 7, wherein: a displacement sensor is fixedly arranged on the auxiliary unit (6); the displacement sensor is electrically connected with the control unit.
9. The fully automated circuit board testing apparatus of claim 8, wherein: the conical probe (21) at the top of the probe (2) and the outer surface of the elastic cylinder (22) are respectively plated with a layer of copper film.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211446704.2A CN115739705B (en) | 2022-11-18 | 2022-11-18 | Full-automatic circuit board test equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211446704.2A CN115739705B (en) | 2022-11-18 | 2022-11-18 | Full-automatic circuit board test equipment |
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| CN115739705A CN115739705A (en) | 2023-03-07 |
| CN115739705B true CN115739705B (en) | 2023-06-02 |
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| CN202211446704.2A Active CN115739705B (en) | 2022-11-18 | 2022-11-18 | Full-automatic circuit board test equipment |
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| CN117949815B (en) * | 2024-03-27 | 2024-05-28 | 深圳富士泰科电子有限公司 | Circuit board electrical testing equipment and testing method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN207473048U (en) * | 2017-10-24 | 2018-06-08 | 遂宁市力源印制电路板有限公司 | A kind of Combined circuit board test device |
| CN212433334U (en) * | 2020-06-10 | 2021-01-29 | 惠州市合智电子有限公司 | Power circuit board test fixture |
| CN213023440U (en) * | 2020-07-08 | 2021-04-20 | 昆山升菖电子有限公司 | Quick detection device of PCB circuit board |
| CN213275854U (en) * | 2020-08-17 | 2021-05-25 | 江苏洲旭电路科技有限公司 | Multifunctional circuit board test fixture |
| CN212905291U (en) * | 2020-09-30 | 2021-04-06 | 深圳市满坤电子有限公司 | Jig for PCB testing |
| CN213903592U (en) * | 2020-12-02 | 2021-08-06 | 苏州思美得电子科技有限公司 | Circuit board test switching device |
| CN214409211U (en) * | 2021-03-30 | 2021-10-15 | 深圳市承大实业发展有限公司 | Jig for testing high-precision integrated circuit |
| CN215813197U (en) * | 2021-09-07 | 2022-02-11 | 常州泽明自动化设备有限公司 | Test needle bed for brushless motor drive plate |
| CN216248236U (en) * | 2021-11-22 | 2022-04-08 | 李天山 | Electrical performance test tool for circuit board |
| CN217278535U (en) * | 2021-12-29 | 2022-08-23 | 苏州斯丹德电子科技有限公司 | Auxiliary alignment device for probe test device |
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