CN211247428U

CN211247428U - Error-proof circuit board detection device

Info

Publication number: CN211247428U
Application number: CN201921817661.8U
Authority: CN
Inventors: 曾建华
Original assignee: Jiangmen Glory Faith Pcb Co ltd
Current assignee: Jiangmen Glory Faith Pcb Co ltd
Priority date: 2019-10-25
Filing date: 2019-10-25
Publication date: 2020-08-14
Anticipated expiration: 2029-10-25

Abstract

The utility model discloses an error-proof circuit board detection device, include: the circuit board state detection device comprises a main control assembly, a probe assembly for detecting the state of a circuit board, a frame body for fixing the probe assembly, an error-proof sensor assembly for circuit board classification, an alarm assembly for sending an alarm signal and a workbench; the workbench is provided with a qualified area for placing qualified circuit boards and an unqualified area for placing unqualified circuit boards; the qualified area is arranged on one side of the error-proof sensor assembly, and the unqualified area is arranged on the other side of the error-proof sensor assembly. The device can detect the circuit board, and makes the circuit board after detecting can carry out accurate classification, and when the circuit board was placed regional mistake, alarm component sent alarm signal for the operator acquires alarm information, and makes according to alarm signal and corrects the operation, has improved the accuracy that the circuit board detected.

Description

Error-proof circuit board detection device

Technical Field

The utility model relates to the field of electronic technology, concretely relates to error-proof circuit board detection device.

Background

The circuit board is used as an important component in the development and production of electronic systems, and the quality of the circuit board directly affects the quality of the whole equipment, so that the circuit board needs to be detected in the production process of the circuit board. In the process of detecting the circuit board, an operator is easy to cause inaccuracy of circuit board detection classification due to long-time work, for example, an undetected circuit board is placed in a detection-completed area, a qualified circuit board is placed in an unqualified circuit board area, and the like, so that the accuracy of circuit board detection is reduced, and the production cost of the circuit board is improved.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides an error-proof circuit board detection device can detect the circuit board, and makes the circuit board after detecting can carry out accurate classification, has improved the accuracy that the circuit board detected.

According to the utility model discloses an error-proofing circuit board detection device of embodiment includes: the circuit board state detection device comprises a main control assembly, a probe assembly for detecting the state of a circuit board, a frame body for fixing the probe assembly, an error-proof sensor assembly for circuit board classification, an alarm assembly for sending an alarm signal and a workbench; the workbench is provided with a qualified area for placing qualified circuit boards and an unqualified area for placing unqualified circuit boards; the qualified area is arranged on one side of the error-proof sensor assembly, the unqualified area is arranged on the other side of the error-proof sensor assembly, and the frame body is arranged on the workbench; the main control assembly is respectively connected with the probe assembly, the error-proof sensor assembly and the alarm assembly, and the frame body is connected with the probe assembly.

According to the utility model discloses error-proof circuit board detection device has following beneficial effect at least: the probe assembly is used for detecting the state of the circuit board, so that an operator can distinguish qualified circuit boards from unqualified circuit boards conveniently; the error-proof sensor assembly is used for classifying the circuit boards, the qualified area is arranged on one side of the error-proof sensor assembly, and the unqualified area is arranged on the other side of the error-proof sensor assembly, so that an operator can monitor whether the placement area of the circuit board is correct or not by detecting whether the circuit board passes through the error-proof sensor assembly in the process of placing the circuit board to the qualified area or the unqualified area, and the detected circuit board can be accurately classified; when the circuit board placement area is wrong, the alarm assembly sends an alarm signal, so that an operator can acquire alarm information and make correction operation according to the alarm signal, and the classification accuracy of the circuit board is ensured; the main control assembly is used for receiving trigger signals sent by the probe assembly, the error-proof sensor assembly and the alarm assembly, and sending driving signals to the probe assembly, the error-proof sensor assembly and the alarm assembly according to the trigger signals, so that the parts are coordinated, and the accuracy of circuit board detection is improved.

According to some embodiments of the utility model, the support body includes: the upper frame body, the lower frame body and the plurality of first supporting rods; the first support rods are respectively connected with the upper frame body and the lower frame body.

According to some embodiments of the invention, the probe assembly comprises: the device comprises an upper probe unit, a lower probe unit and a lifting unit for driving the upper probe unit to lift relative to the lower probe unit; the lifting unit is connected with the bottom of the upper frame body, the lower probe unit is connected with the top of the lower frame body, the bottom of the lifting unit is connected with the upper probe unit, and the main control assembly is respectively connected with the upper probe unit, the lower probe unit and the lifting unit.

According to some embodiments of the invention, the upper probe unit comprises: the circuit board detection device comprises a pressing plate, an elastic buffer plate, a plurality of needle plates, a plurality of probes for detecting a circuit board, and a plurality of positioning columns for fixing the positions among the pressing plate, the elastic buffer plate and the needle plates; a plurality of first through holes for a plurality of probes to pass through are formed in the elastic buffer plate, and a plurality of second through holes for a plurality of probes to pass through are formed in the plurality of needle plates; the positioning column is sequentially connected with the bottom of the pressing plate, the plurality of needle plates and the top of the elastic buffer plate; the top of the probe is connected with the bottom of the pressing plate, the probe is in sliding connection with the plurality of needle plates through the second through holes, the probe is in sliding connection with the elastic buffer plate through the first through holes, and the lifting unit is connected with the top of the pressing plate.

According to some embodiments of the invention, the upper probe unit further comprises: the second supporting rod and the fixing plate are used for fixing the position of the pressing plate; the top of the fixed plate is connected with the bottom of the lifting unit, the bottom of the fixed plate is connected with the top of the second supporting rod, and the bottom of the second supporting rod is connected with the top of the pressing plate; the fixing plate is connected with the first supporting rod in a sliding mode so as to fix the position of the pressing plate.

According to some embodiments of the invention, the error protection sensor assembly employs an infrared sensor or an ultrasonic sensor.

According to some embodiments of the invention, the alarm assembly comprises: the alarm device comprises a loudspeaker for sending alarm sound and a plurality of display lamps for displaying alarm types; the main control assembly is respectively connected with the loudspeaker and the display lamps.

According to some embodiments of the present invention, the main control assembly comprises: the main control center and a display screen for displaying the circuit board information; the main control center is respectively connected with the display screen, the probe assembly, the error-proof sensor assembly and the alarm assembly.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic diagram of an overall structure of an error-proof circuit board detection apparatus according to an embodiment of the present invention;

fig. 2 is an exploded view of an upper probe unit according to an embodiment of the present invention;

fig. 3 is a combined structure diagram of an upper probe unit according to an embodiment of the present invention.

Reference numerals:

the probe assembly 100, the upper probe unit 110, the pressing plate 111, the elastic buffer plate 112, the needle plate 113, the probe 114, the positioning column 115, the second support rod 116, the fixing plate 117, the first through hole 1121, the lower probe unit 120, the lifting unit 130, the fixing portion 131, the lifting portion 132, the error-proof sensor assembly 200, the alarm assembly 300, the speaker 310, the display lamp 320, the workbench 400, the qualified area 410, the unqualified area 420, the frame 500, the upper frame 510, the lower frame 520, the first support rod 530, the main control assembly 600, and the start group price 700.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to, for example, the upper, lower, inner, outer, etc., is the orientation or positional relationship shown on the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

In the description of the present invention, if there are first, second, third, fourth, fifth, etc. described, it is only for the purpose of distinguishing technical features, and it is not understood that relative importance is indicated or implied or that the number of indicated technical features is implicitly indicated or that the precedence of the indicated technical features is implicitly indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting and connection should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meaning of the above words in the present invention by combining the specific contents of the technical solution.

The embodiments of the present invention will be further explained with reference to the drawings.

As shown in fig. 1, the circuit board detection device for preventing errors according to the embodiment of the present invention includes: the probe assembly 100 for detecting the state of the circuit board, the holder 500 for fixing the probe assembly 100, the error-proof sensor assembly 200 for circuit board classification, and the alarm assembly 300 for emitting an alarm signal; the workbench 400 is provided with a qualified area 410 for placing circuit boards qualified in the test and an unqualified area 420 for placing circuit boards unqualified in the test; the qualified area 410 is disposed at one side of the error-proof sensor assembly 200, the unqualified area 420 is disposed at the other side of the error-proof sensor assembly 200, and the frame body 500 is disposed on the worktable 400; the main control assembly 600 is connected to the probe assembly 100, the error prevention sensor assembly 200 and the alarm assembly 300, respectively, and the frame body 500 is connected to the probe assembly 100.

For example, as shown in fig. 1, the probe assembly 100 is used for inspecting a circuit board, testing the status of the circuit board, and facilitating an operator to distinguish between qualified and unqualified circuit boards; the frame 500 assembly is used for fixing the probe assembly 100, so that the probe assembly 100 can better detect the circuit board; the main control assembly 600 is used for receiving the trigger signals sent by the probe assembly 100, the error-proof sensor assembly 200 and the alarm assembly 300, and the main control assembly 600 sends driving signals to the probe assembly 100, the error-proof sensor assembly 200 and the alarm assembly 300 according to the trigger signals, so that the components are coordinated, and the accuracy of circuit board detection is improved. The main control assembly 600 may be provided with a display assembly, such as a two-color light emitting diode or an LED display screen, for displaying the detection result of the probe assembly 100, and when the circuit board detected by the probe assembly 100 is qualified, the display assembly displays green light or displays qualified characters, and when the circuit board detected by the probe assembly 100 is unqualified, the display assembly displays red light or displays unqualified characters.

The error-proof sensor assembly 200 is used for classifying circuit boards, a qualified area 410 for placing circuit boards qualified for testing and an unqualified area 420 for placing circuit boards unqualified for testing are arranged on the workbench 400, the qualified area 410 is arranged on one side of the error-proof sensor assembly 200, the unqualified area 420 is arranged on the other side of the error-proof sensor assembly 200, and the detection range of the error-proof sensor assembly 200 is arranged to be vertical upward, so that an operator can monitor whether the placement area of the circuit boards is correct or not by detecting the existence of the circuit boards, namely whether the circuit boards appear in the detection range of the error-proof sensor assembly 200 or not in the process of placing the circuit boards to the qualified area 410 or the unqualified area 420, and the detected circuit boards can be accurately classified. When the circuit board placement area is wrong, the alarm assembly 300 sends out an alarm signal, so that an operator acquires alarm information, and makes correction operation according to the alarm signal, and the classification accuracy of the circuit board is ensured.

Specifically, when the fail region 420 is disposed on the left side of the error-protection sensor assembly 200, the pass region 410 is disposed on the right side of the error-protection sensor assembly 200, and the probe assembly 100 is disposed between the fail region 420 and the pass region 410, that is, the positions of the fail region 420, the pass region 410, the error-protection sensor assembly 200, and the probe assembly 100 are arranged in the order from left to right: off-specification area 420, probe assembly 100, error protection sensor assembly 200, qualified area 410; the function of the error-protection sensor assembly 200 is to detect whether a circuit board has passed through and is placed in the qualified area 410. Meanwhile, the operation of the probe assembly 100 is controlled by providing the starting assembly 700, and the starting assembly 700 is connected with the main control assembly 600.

When a circuit board needs to be detected, the starting assembly 700 is started, the starting assembly 700 transmits a first trigger signal to the main control assembly 600, the main control assembly 600 transmits a first driving signal to the probe assembly 100 according to the first trigger signal, so that the probe assembly 100 operates, the state of the circuit board is further detected, the probe assembly 100 transmits a second trigger signal of the detected state of the circuit board to the main control assembly 600, if the circuit board is a qualified circuit board, but an operator places the qualified circuit board in an unqualified area 420, namely the qualified circuit board does not pass through the error-proof sensor assembly 200, and the error-proof sensor assembly 200 does not detect the existence of the qualified circuit board, then the error-proof sensor assembly 200 does not transmit a third trigger signal to the main control assembly 600; when a second circuit board is detected, the starting assembly 700 is restarted, the starting assembly 700 transmits a first trigger signal of the second circuit board to the main control assembly 600, the main control assembly 600 transmits an alarm signal to the alarm assembly 300 according to a second trigger signal of the first circuit board and the first trigger signal of the second circuit board, so that an operator obtains alarm information, checks the circuit boards according to the alarm signal, performs corresponding correction operation, and places the first circuit board in the qualified area 410 again, thereby ensuring the accurate classification of the circuit boards. Under normal conditions, if an operator places a qualified circuit board in the qualified area 410, the main control assembly 600 receives the third trigger signal transmitted from the error-prevention sensor assembly 200 to the main control assembly 600, and the main control assembly 600 receives the first trigger signal of the second circuit board after receiving the second trigger signal and the third trigger signal of the first circuit board, and at this time, the main control assembly 600 does not transmit the alarm signal to the alarm assembly 300, so that the second circuit board can be successfully detected.

If the circuit board is an unqualified circuit board, but the operator places the unqualified circuit board in the qualified area 410, i.e. the unqualified circuit board passes through the error-proof sensor assembly 200, and the error-proof sensor assembly 200 detects the existence of the unqualified circuit board, the error-proof sensor assembly 200 transmits a third trigger signal to the main control assembly 600, and the main control assembly 600 transmits an alarm signal to the alarm assembly 300 according to the second trigger signal and the third trigger signal, so as to prompt the circuit board to be positioned wrongly. Under normal circumstances, if the operator places a defective circuit board in the defective area 420, the master control assembly 600 does not receive the error-protection sensor assembly 200 to transmit the third trigger signal to the master control assembly 600.

Further, if the number of the error-proof sensor assemblies 200 is two, namely, the first error-proof sensor assembly 200 and the second error-proof sensor assembly, and the first error-proof sensor assembly 200 and the second error-proof sensor assembly are respectively disposed on both sides of the probe assembly 100, and the qualified area 410 and the unqualified area 420 are respectively disposed on both sides of the first error-proof sensor assembly 200 and the second error-proof sensor assembly, then the positions of the probe assembly 100, the first error-proof sensor assembly 200, the second error-proof sensor assembly, the qualified area 410 and the unqualified area 420 may be sequentially arranged from left to right: fail zone 420, first error-protection sensor assembly 200, probe assembly 100, second error-protection sensor assembly, pass zone 410.

Specifically, after the probe assembly 100 has completed testing the circuit board, the circuit board must pass through the first error-protection sensor assembly 200 or the second error-protection sensor assembly before being placed in the qualified area 410 or the unqualified area 420; and a first error-proofing sensor assembly 200 is used to detect whether a circuit board is placed in the non-conforming area 420 and a second error-proofing sensor assembly is used to detect whether a circuit board is placed in the conforming area 410.

If the circuit board is a qualified circuit board, the operator does not place the qualified circuit board in the qualified area 410 or the unqualified area 420, but directly uses the first circuit board as the second circuit board for the next detection, the first error-proof sensor assembly 200 does not transmit the fourth trigger signal to the main control assembly 600, and the second error-proof sensor assembly does not transmit the fifth trigger signal to the main control assembly 600; when a second circuit board is detected, the starting assembly 700 is restarted, the starting assembly 700 transmits a first trigger signal for starting the detection of the second circuit board to the main control assembly 600, and the main control assembly 600 transmits an alarm signal to the alarm assembly 300 according to a second trigger signal of the first circuit board and the first trigger signal of the second circuit board, so as to prompt that the circuit board is in a wrong position, so that an operator obtains alarm information, checks the circuit board according to the alarm signal and performs corresponding correction operation.

If the circuit board is a qualified circuit board, but the operator places the qualified circuit board in the unqualified area 420, the first error-proofing sensor assembly 200 detects the existence of the qualified circuit board, the first error-proofing sensor assembly 200 transmits a fourth trigger signal to the main control assembly 600, and the main control assembly 600 transmits an alarm signal to the alarm assembly 300 according to the second trigger signal and the fourth trigger signal, so as to prompt that the position of the circuit board is wrong. Under normal conditions, the main control assembly 600 receives the second trigger signal of the first circuit board and then receives the fifth trigger signal of the first circuit board, and then continues to receive the first trigger signal of the second circuit board. If the circuit board is not detected, i.e., the start-up assembly 700 is not turned on, the start-up assembly 700 does not transmit the first trigger signal to the main control assembly 600, but the operator places the circuit board in the qualified area 410, the second error-proofing sensor assembly transmits the fifth trigger signal to the main control assembly 600, and the main control assembly 600 transmits the alarm signal to the alarm assembly 300 according to the fifth trigger signal.

The master control assembly 600 may be a single chip microcomputer with model MSP430, which is a 16-bit single chip microcomputer, adopts a simplified instruction set structure, and has rich addressing modes, simple 27 kernel instructions and a large number of simulation instructions; a large number of registers and on-chip data memories can participate in various operations; there are also efficient table lookup processing instructions. The main control component 600 stores therein an operation rule for obtaining an alarm signal according to a relationship among the first trigger signal, the second trigger signal, the third trigger signal, the fourth trigger signal, and the fifth trigger signal. The positions of the probe assembly 100, the error-preventing sensor assembly 200, the acceptable area 410, and the unacceptable area 420 may be set according to actual conditions, and specific positions are not limited as long as the functions of the present embodiment can be achieved.

In some embodiments of the present invention, the frame body 500 includes: an upper frame body 510, a lower frame body 520 and a plurality of first support bars 530. For example, as shown in fig. 1, a plurality of first support rods 530 are respectively connected to the upper frame body 510 and the lower frame body 520, so as to fix a position between the upper frame body 510 and the lower frame body 520, and the first support rods 530 support the upper frame body 510, so that an accommodating space is formed between the upper frame body 510 and the lower frame body 520, and the connection between the upper frame body 510 and the lower frame body 520 is facilitated.

In some embodiments of the present invention, the probe assembly 100 includes: an upper probe unit 110, a lower probe unit 120, and a lifting unit 130 for driving the upper probe unit 110 to lift relative to the lower probe unit 120; the lifting unit 130 is connected to the bottom of the upper frame 510, the lower probe unit 120 is connected to the top of the lower frame 520, the bottom of the lifting unit 130 is connected to the upper probe unit 110, and the main control assembly 600 is connected to the upper probe unit 110, the lower probe unit 120, and the lifting unit 130, respectively.

Specifically, as shown in fig. 1, the upper frame 510 is configured as a closed cover, and a through hole is formed at the bottom of the upper frame 510; the lifting unit 130 comprises a fixed part 131 and a lifting part 132, namely, components in the fixed part 131 are stable and do not move, components in the lifting part 132 move and realize a lifting function, and the lifting part 132 can stretch and move up and down relative to the fixed part 131; the lifting unit 130 is coupled to the upper housing 510 through the through-hole such that the fixing part 131 of the lifting unit 130 is disposed inside the upper housing 510 and the lifting part 132 of the lifting unit 130 is disposed outside the upper housing 510. The bottom of the elevating part 132 of the elevating unit 130 is connected to the upper probe unit 110, and the elevating unit 130 can drive the upper probe unit 110 to move up and down; the lower probe unit 120 is connected to the top of the lower frame 520 such that the lower probe unit 120 is fixed to the lower frame 520; because the upper frame 510 and the lower frame 520 are disposed oppositely, the lifting unit 130 can drive the upper probe unit 110 to move up and down relative to the lower probe unit 120, so as to detect the circuit board.

The lifting unit 130 may be a pneumatic cylinder, which is a pneumatic actuator that converts pneumatic energy into mechanical energy and performs linear reciprocating motion or oscillating motion, and has a simple structure and reliable operation. When the reciprocating motion is realized by the pneumatic cylinder, a speed reducing device can be omitted, no transmission gap exists, and the motion is stable; the pneumatic cylinder is basically composed of a cylinder barrel and a cylinder cover, a piston and a piston rod, a sealing device, a buffering device and an exhaust device, wherein the buffering device and the exhaust device are determined according to specific application occasions, and other devices are necessary.

The main control assembly 600 is connected to the upper probe unit 110, the lower probe unit 120 and the lifting unit 130, when a circuit board needs to be detected, the circuit board is placed on the lower probe unit 120, the starting assembly 700 transmits a first trigger signal to the main control assembly 600, the main control assembly 600 transmits a first driving signal to the lifting unit 130 according to the first trigger signal, the lifting unit 130 receives the first driving signal and drives the upper probe unit 110 to realize lifting movement, so that the distance between the upper probe unit 110 and the lower probe unit 120 is gradually reduced until the upper probe unit 110 and the upper surface of the circuit board are tightly attached to each other, the circuit board is detected by the upper probe unit 110 and the lower probe unit 120, and after the circuit board is detected, a second trigger signal of the detected circuit board state is transmitted to the main control assembly 600 by the upper probe unit 110 and the lower probe unit 120. The principle of the circuit board detection by the upper probe unit 110 and the lower probe unit 120 is that whether the circuit board is connected or not is detected, and the circuit of the circuit board is connected when a current passes through the circuit board.

In some embodiments of the present invention, the upper probe unit 110 includes: the circuit board detection device comprises a pressing plate 111, an elastic buffer plate 112, a plurality of needle plates 113, a plurality of probes 114 for detecting the circuit board, and a plurality of positioning columns 115 for fixing positions among the pressing plate 111, the elastic buffer plate 112 and the plurality of needle plates 113; the elastic buffer plate 112 is provided with a plurality of first through holes 1121 for passing a plurality of probes 114 therethrough, and the plurality of needle plates 113 is provided with a plurality of second through holes for passing a plurality of probes 114 therethrough.

For example, as shown in fig. 2 and 3, the top of the probe 114 is connected to the bottom of the pressing plate 111, the probe 114 is slidably connected to the plurality of needle plates 113 through the second through hole, the probe 114 is slidably connected to the elastic buffer plate 112 through the first through hole 1121, that is, the probe 114 is fixedly connected to the bottom of the pressing plate 111 when being connected to the bottom, the position of the probe 114 is fixed, and the probe 114 is slidably connected to the elastic buffer plate 112 and the plurality of needle plates 113 through the first through hole 1121 and the second through hole, respectively, so that the probe 114 can be flexibly adjusted in position on the elastic buffer plate 112 and the plurality of needle plates 113; the positioning columns 115 are sequentially connected with the bottom of the pressing plate 111, the plurality of needle plates 113 and the top of the elastic buffer plate 112, so that the pressing plate 111, the plurality of needle plates 113 and the elastic buffer plate 112 can be fixedly connected, and deformation of the probes 114 caused by relative position change is reduced; gaps are formed among the pressing plate 111, the needle plates 113 and the elastic buffer plate 112, and among the needle plates 113, and are not directly overlapped and connected, and a position of any one first through hole 1121 corresponds to a position of a corresponding second through hole, so that the same probe 114 can smoothly pass through the first through hole 1121 and the second through hole at the same time.

Further, the elastic buffer plate 112 can just completely cover the probes 114 under the combined action of the positioning posts 115, the pressing plate 111, the plurality of needle plates 113 and the elastic buffer plate 112 in a natural state, that is, under the condition that the elastic buffer plate 112 is not subjected to an external force; when the surface of the elastic buffer plate 112 is pressed, the probe 114 protrudes to the surface of the elastic buffer plate 112 through the first through hole 1121. The specific structure of the lower probe unit 120 may be the same as that of the upper probe unit 110, for example, the lower probe unit 120 includes: the lower elastic buffer plate is provided with a plurality of first lower through holes, and the plurality of lower needle plates are provided with a plurality of second lower through holes.

Specifically, when the circuit board needs to be detected, the circuit board is placed on the lower elastic buffer plate, and due to the action of the gravity of the circuit board, the lower elastic buffer plate is elastically deformed, so that the lower elastic buffer plate is in a compressed state, the thickness of the lower elastic buffer plate is reduced, and a plurality of lower probes protrude to the surface of the lower elastic buffer plate through a plurality of first lower through holes to be in contact with the lower surface of the circuit board; the lifting unit 130 is connected to the top of the pressing plate 111 of the upper probe unit 110, so that the lifting unit 130 drives the pressing plate 111 of the upper probe unit 110 to move up and down, and since the positioning posts 115, the probes 114, the pressing plate 111, the plurality of needle plates 113 and the elastic buffer plate 112 of the upper probe unit 110 are connected to each other, the pressing plate 111 of the upper probe unit 110 drives the positioning posts 115, the probes 114, the plurality of needle plates 113 and the elastic buffer plate 112 to move up and down until the elastic buffer plate 112 of the upper probe unit 110 contacts with the upper surface of the circuit board, and the upper surface of the circuit board generates a certain pressure on the surface of the elastic buffer plate 112, so that the plurality of probes 114 protrude to the surface of the elastic buffer plate 112 through the plurality of first through holes 1121 to contact with the upper surface. Under the action of the probes 114 of the upper probe unit 110 and the lower probes of the lower probe unit 120, whether the circuit board is qualified is judged by detecting whether the circuit board and the probes 114 and the lower probes form a passage, namely the circuit board and the probes 114 and the lower probes form a passage, and the circuit board is qualified, otherwise, the circuit board is unqualified if the circuit board is not qualified.

In some embodiments of the present invention, the upper probe unit 110 further comprises: a second support bar 116 for fixing the position of the pressing plate 111, and a fixing plate 117. For example, as shown in fig. 1, the top of the fixing plate 117 is connected to the bottom of the lifting unit 130, the bottom of the fixing plate 117 is connected to the top of the second supporting rod 116, and the bottom of the second supporting rod 116 is connected to the top of the pressing plate 111, so that the lifting unit 130 is connected to the pressing plate 111 through the fixing plate 117 and the second supporting rod 116, the connection area of the pressing plate 111 is increased, and the lifting process of the pressing plate 111 is more stable; the fixing plate 117 is slidably connected to the first supporting rod 530, the sliding direction of the fixing plate 117 is fixed by the first supporting rod 530, the upper frame 510 and the lower frame 520 are vertically connected by the first supporting rod 530, and the fixing plate 117 is vertically slidably connected to the first supporting rod 530, so that the lifting unit 130 drives the upper probe assembly 100 to vertically lift relative to the lower probe assembly 100, and the elastic buffer plate 112 of the upper probe assembly 100 is parallel to the lower elastic buffer plate of the lower probe assembly 100, so that the elastic buffer plate 112 of the upper probe assembly 100 and the lower elastic buffer plate of the lower probe assembly 100 can be respectively tightly attached to the surface of the circuit board, and the probes 114 of the upper probe assembly 100 and the lower probes of the lower probe assembly 100 can better detect the circuit board.

In some embodiments of the present invention, the error protection sensor assembly 200 employs an infrared sensor or an ultrasonic sensor.

Specifically, the infrared sensor is a sensor that uses physical properties of infrared rays to perform measurement. The infrared ray is also called as infrared ray, and has the properties of reflection, refraction, scattering, interference, absorption and the like; any substance can radiate infrared rays as long as the substance has a certain temperature higher than absolute zero. Therefore, the infrared sensor can effectively detect the existence of the circuit board, the detection speed is high, the sensitivity is high, and the accuracy of the detection of the placement position of the circuit board is improved.

The ultrasonic sensor is a sensor developed by utilizing the characteristics of ultrasonic waves. The ultrasonic wave is a mechanical wave with vibration frequency higher than that of sound wave, is generated by the vibration of the transduction wafer under the excitation of voltage, and has the characteristics of high frequency, short wavelength, good directivity, capability of being directionally propagated as rays and the like. The ultrasonic wave has great penetrating power to liquid and solid, and especially to opaque solid, the ultrasonic wave will produce obvious reflection to form echo, so that the ultrasonic sensor can detect the circuit board effectively and has high sensitivity and accurate detection.

In some embodiments of the present invention, the alarm assembly 300 comprises: a speaker 310 for sounding an alarm and a plurality of display lamps 320 for displaying the type of alarm; the main control assembly 600 is connected with the speaker 310 and the plurality of display lamps 320, respectively.

Specifically, the speaker 310 is a transducer device that converts an electrical signal into an acoustic signal, and the audio power vibrates its cone or diaphragm by electromagnetic, piezoelectric or electrostatic effects and resonates with the surrounding air to produce sound. The display lamps 320 can be LED lamps, and the number of the display lamps 320 can be set according to the alarm condition; meanwhile, the display lamp 320 may be set to different colors to display different alarm conditions. For example, the number of the display lamps 320 is four, and the colors are red, green, blue, and yellow, respectively; after the circuit board is detected, the circuit board is not placed in the qualified area 410 or the unqualified area 420, but the second detection is directly carried out, namely the circuit board is repeatedly detected, then the red display lamp is turned on, and the loudspeaker 310 gives out an alarm sound; when the qualified circuit board is detected and placed in the unqualified area 420, the blue display lamp is turned on, and the loudspeaker 310 emits an alarm sound; when the unqualified circuit board is detected and placed in the qualified area 410, the green display lamp is turned on, and the loudspeaker 310 gives out an alarm sound; when the circuit board is not detected and is placed in the acceptable area 410 or the unacceptable area 420, the display lamp of yellow color is turned on and the speaker 310 sounds an alarm. The arrangement of the speaker 310 and the display lamp 320 can enable an operator to more conveniently and quickly acquire the information of circuit board placement errors, thereby improving the speed and accuracy of circuit board detection.

In some embodiments of the present invention, the main control assembly 600 includes: the main control center and a display screen for displaying the circuit board information; the main control center is respectively connected with the display screen, the probe assembly 100, the error-proof sensor assembly 200 and the alarm assembly 300.

Specifically, the main control center is used for receiving trigger signals sent by the probe assembly 100, the error-proof sensor assembly 200 and the alarm assembly 300, and the main control center sends driving signals to the display screen, the probe assembly 100, the error-proof sensor assembly 200 and the alarm assembly 300 according to the trigger signals, so that the components are coordinated, and the accuracy of circuit board detection is improved; the display screen is used for displaying the detection information of the circuit board and the placement error information of the circuit board, such as the detection state information of the circuit board: qualified or unqualified, information of circuit board placement: repeated detection, position error of a qualified circuit board, position error of an unqualified circuit board, undetected placement of the circuit board and the like, so that an operator can more conveniently acquire the wrong placement information of the circuit board and better adjust the position of the circuit board. Wherein, the master control center can select a singlechip with the model of MSP 430.

Other configurations and operations of the error-proof circuit board detection apparatus according to the embodiments of the present invention are known to those skilled in the art and will not be described in detail herein.

The error-proof circuit board detection device according to the embodiment of the present invention is described in detail with reference to fig. 1 to 3 as a specific embodiment, and it should be understood that the following description is only exemplary and not a specific limitation to the present invention.

As shown in fig. 1 to 3, an error-proof circuit board testing apparatus includes: the upper pressing plate, the upper elastic buffer plate, the upper needle plates, the upper probes, the upper positioning columns, the lower pressing plate, the lower elastic buffer plate, the lower needle plates, the lower probes, the lower positioning columns, the second supporting rod 116, the fixing plate 117, the lifting unit 130, the infrared sensor, the loudspeaker 310, the display lamps 320, the workbench 400, the upper frame body 510, the lower frame body 520, the first supporting rods 530, the main control center, the display screen and the starting assembly 700. The workbench 400 is provided with a qualified area 410 for placing qualified circuit boards and an unqualified area 420 for placing unqualified circuit boards; a plurality of first upper through holes for a plurality of upper probes to pass through are formed in the upper elastic buffer plate, and a plurality of second upper through holes for a plurality of upper probes to pass through are formed in the upper needle plates; a plurality of first lower through holes for a plurality of lower probes to pass through are formed in the lower elastic buffer plate, and a plurality of second lower through holes for a plurality of lower probes to pass through are formed in the lower needle plates.

A plurality of first support rods 530 are respectively connected with the upper frame body 510 and the lower frame body 520; the elevating unit 130 is connected to the bottom of the upper frame 510. The upper positioning column is sequentially connected with the bottom of the upper pressure plate, the plurality of upper needle plates and the top of the upper elastic buffer plate; the top of the upper probe is connected with the bottom of the upper pressure plate, the upper probe is connected with the upper needle plates in a sliding mode through the second upper through holes, and the upper probe is connected with the upper elastic buffer plate in a sliding mode through the first upper through holes; the top of the fixing plate 117 is connected with the bottom of the lifting unit 130, the bottom of the fixing plate 117 is connected with the top of the second supporting rod 116, and the bottom of the second supporting rod 116 is connected with the top of the upper pressing plate; the fixing plate 117 is slidably coupled to the first support bar 530 to fix the position of the upper press plate. The lower positioning column is sequentially connected with the top of the lower pressing plate, the plurality of lower needle plates and the bottom of the lower elastic buffer plate; the bottom of the lower probe is connected with the top of the lower pressure plate, the lower probe is connected with the lower probe plates in a sliding mode through the second lower through holes, and the lower probe is connected with the lower elastic buffer plate in a sliding mode through the first lower through holes; the lower pressing plate is coupled to the top of the lower housing 520.

Master control center, display screen set up on workstation 400, start-up subassembly 700, speaker 310 and a plurality of display lamp 320 and set up under on support body 520, infrared sensor sets up the right flank of support body 520 down, and infrared sensor's transmitting terminal sets up to vertical upwards, and qualified region 410 sets up on the right side of support body 520 down, and unqualified region 420 sets up the left side of support body 520 down. The main control center is respectively connected with the upper probes, the lower probes, the lifting unit 130, the infrared sensor, the loudspeaker 310, the display lamps 320, the display screen and the starting assembly 700.

According to the utility model discloses error-proof circuit board detection device, through so setting up, can reach some effects as follows at least: place the circuit board under on the elastic buffer board, because the effect of circuit board gravity can make down the elastic buffer board take place elastic deformation to the elastic buffer board is in the state of compression under the messenger, and the thickness of lower elastic buffer board reduces, makes a plurality of lower probes through a plurality of first through-holes outstanding surface and the lower surface contact of circuit board of elastic buffer board down. The lifting unit 130 drives the upper pressing plate to perform lifting movement, so that the upper positioning column, the upper probes, the upper needle plates and the upper elastic buffer plate are driven to perform lifting movement until the upper elastic buffer plate is in contact with the upper surface of the circuit board, and the upper surface of the circuit board generates certain pressure on the surface of the upper elastic buffer plate, so that the upper probes protrude out of the surface of the upper elastic buffer plate through the first upper through holes and are in contact with the upper surface of the circuit board. And under the action of the upper probe and the lower probe, whether the circuit board is qualified or not is judged by detecting whether a passage is formed among the circuit board, the upper probe and the plurality of lower probes.

The infrared sensor is used for detecting whether a circuit board is placed in the qualified area 410; the display screen is used for displaying the detection information of the circuit board and the placement error information of the circuit board; when the circuit board is placed in a wrong position, the main control center transmits an alarm signal to the loudspeaker 310 and the display lamp 320, so that the loudspeaker 310 emits an alarm sound, and the display lamp 320 displays a corresponding alarm color; the situation that the position of the circuit board is wrong comprises the following steps: the qualified circuit boards are placed in the unqualified area 420, the unqualified circuit boards are placed in the qualified area 410, the circuit boards are repeatedly detected, the circuit boards are placed in the qualified area 410 or the unqualified area 420 without being detected, and the like. The circuit board can be detected by the coordination of the components, the detected circuit board can be accurately classified, the accuracy of circuit board detection is improved, and the error of the circuit board placement position is prevented.

In the description herein, references to the description of the terms "some embodiments," "examples," or "the embodiment" or the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An error-proof circuit board inspection device, comprising:

the probe assembly is used for detecting the state of the circuit board;

an error-protection sensor assembly for circuit board classification;

the alarm assembly is used for sending an alarm signal;

the workbench is provided with a qualified area for placing qualified circuit boards and an unqualified area for placing unqualified circuit boards; the qualified area is arranged on one side of the error-proof sensor assembly, and the unqualified area is arranged on the other side of the error-proof sensor assembly;

the frame body is arranged on the workbench, is used for fixing the probe assembly and is connected with the probe assembly;

and the main control assembly is respectively connected with the probe assembly, the error-proof sensor assembly and the alarm assembly.

2. An error-proof circuit board inspection device according to claim 1, wherein: the support body includes: the upper frame body, the lower frame body and the plurality of first supporting rods; the first support rods are respectively connected with the upper frame body and the lower frame body.

3. An error-proof circuit board inspection device according to claim 2, wherein: the probe assembly includes: the device comprises an upper probe unit, a lower probe unit and a lifting unit for driving the upper probe unit to lift relative to the lower probe unit; the lifting unit is connected with the bottom of the upper frame body, the lower probe unit is connected with the top of the lower frame body, the bottom of the lifting unit is connected with the upper probe unit, and the main control assembly is respectively connected with the upper probe unit, the lower probe unit and the lifting unit.

4. An error-proof circuit board inspection device according to claim 3, wherein: the upper probe unit includes: the circuit board detection device comprises a pressing plate, an elastic buffer plate, a plurality of needle plates, a plurality of probes for detecting a circuit board, and a plurality of positioning columns for fixing the positions among the pressing plate, the elastic buffer plate and the needle plates; a plurality of first through holes for a plurality of probes to pass through are formed in the elastic buffer plate, and a plurality of second through holes for a plurality of probes to pass through are formed in the plurality of needle plates; the positioning column is sequentially connected with the bottom of the pressing plate, the plurality of needle plates and the top of the elastic buffer plate; the top of the probe is connected with the bottom of the pressing plate, the probe is in sliding connection with the plurality of needle plates through the second through holes, the probe is in sliding connection with the elastic buffer plate through the first through holes, and the lifting unit is connected with the top of the pressing plate.

5. An error-proof circuit board inspection device according to claim 4, wherein: the upper probe unit further includes: the second supporting rod and the fixing plate are used for fixing the position of the pressing plate; the top of the fixed plate is connected with the bottom of the lifting unit, the bottom of the fixed plate is connected with the top of the second supporting rod, and the bottom of the second supporting rod is connected with the top of the pressing plate; the fixing plate is connected with the first supporting rod in a sliding mode so as to fix the position of the pressing plate.

6. An error-proof circuit board inspection device according to claim 1, wherein: the error-proof sensor assembly adopts an infrared sensor or an ultrasonic sensor.

7. An error-proof circuit board inspection device according to claim 1, wherein: the alarm assembly includes: the alarm device comprises a loudspeaker for sending alarm sound and a plurality of display lamps for displaying alarm types; the main control assembly is respectively connected with the loudspeaker and the display lamps.

8. An error-proof circuit board inspection device according to claim 1, wherein: the master control assembly comprises: the main control center and a display screen for displaying the circuit board information; the main control center is respectively connected with the display screen, the probe assembly, the error-proof sensor assembly and the alarm assembly.