Automatic test fixture for vehicle-mounted circuit board with ultra-large number of points and ultra-large size

Abstract

The utility model discloses an automatic test fixture for an oversized vehicle-mounted circuit board with oversized points, and relates to the technical field of circuit board test. The top of the base is provided with an inspection box, the back of the inspection box is provided with a fan, one side in the inspection box is provided with an iron column, the other side in the inspection box is provided with a dust hood, the dust hood is internally provided with an exhaust fan, and the middle in the inspection box is connected with a rotating shaft through a fixing frame. According to the utility model, the magnet attracts the iron block, and the sucking disc extrudes the circuit board to be detected, so that the circuit board to be detected is fixed; air is blown to the surface of the circuit board through the nozzle, dust in the through hole is blown out, and the detection accuracy is improved; after dust removal of all the circuit boards to be detected is completed, the iron columns are attracted through magnetic force of the magnets, the clamping assemblies enable the circuit boards to be perpendicular to an optical path emitted by the emission end of the correlation type sensor, detection is convenient, meanwhile, the clamping assemblies are limited through magnetic attraction, and overturning caused by the gravity effect of the clamping assemblies is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of circuit board test, concretely to a super large point number super large size vehicle-mounted circuit board automatic test fixture. BACKGROUND

[0002] The circuit board test fixture is a kind of fixture collectively referred to as the test result of the display or output of the data processing, measurement, excitation, circuit board, is a kind of mechanical auxiliary equipment for testing whether the circuit board reaches the designer's expected performance or effect, it can detect the defects of circuit board, therefore be widely used in electronic product production process, after the drilling process of circuit board is completed, the appearance of blind hole and through hole of circuit board needs to be detected to detect the drilling condition of blind hole and through hole and dust removal condition.

[0003] Through retrieval, a kind of novel circuit board test fixture with application number 202022864151.5 is found, the device is provided with emitter-receiver sensor emitting end and emitter-receiver sensor receiving end, when using, emitter-receiver sensor emitting end and emitter-receiver sensor receiving end are aligned up and down, and the blind hole or test through hole of circuit board is tested, but in the testing process, due to the small through hole, the dust generated during drilling is easy to block the through hole, after being placed in fixture detection, it cannot be judged whether the through hole is caused by missing drilling or dust blockage, and the circuit board needs to be taken down for cleaning and then continue testing, and multiple circuit boards cannot be tested, so the testing efficiency is low. UTILITY MODEL CONTENT

[0004] Therefore, the utility model aims at providing a super large point number super large size vehicle-mounted circuit board automatic test fixture to solve the technical problems in the above background art.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a super large point number super large size vehicle-mounted circuit board automatic test fixture, including base, the base top is equipped with inspection box, the inspection box back is equipped with fan, one side of the inside of the inspection box is rotatably connected with iron column, the other side of the inside of the inspection box is equipped with dust collecting hood, the dust collecting hood is equipped with exhaust fan, the inside of the inspection box is connected with rotating shaft through fixing frame in the middle, the rotating shaft outer surface is equipped with clamping assembly, the clamping assembly includes connecting block, the connecting block is connected with guide rod and bidirectional screw rod in the inside, the bidirectional screw rod one end is equipped with rotating wheel, the bidirectional screw rod and guide rod outer surface are connected with lower clamping plate, the lower clamping plate inner wall is equipped with magnet, the lower clamping plate back is connected with upper clamping plate, the upper clamping plate inner wall is equipped with iron block, the upper clamping plate bottom and lower clamping plate top are all equipped with suction disc.

[0006] Further, the upper part of the inside of the test box is provided with a transmitting end of a reflection sensor through a connecting plate, and the lower part of the inside of the test box is provided with a receiving end of the reflection sensor through the connecting plate.

[0007] By adopting the above technical scheme, the transmitting end of the reflection sensor emits infrared light to the circuit board, the infrared light passes through the through hole, the receiving end of the reflection sensor receives the infrared light, the optical signal is converted into an electrical signal and transmitted to the computer for comparison, and then whether the through hole on the circuit board is unobstructed is detected.

[0008] Further, the transmitting end of the reflection sensor and the receiving end of the reflection sensor are each provided with a plurality of groups, and the positions of the plurality of groups of the transmitting end of the reflection sensor and the receiving end of the reflection sensor correspond to each other.

[0009] By adopting the above technical scheme, by providing a plurality of groups of the transmitting end of the reflection sensor and the receiving end of the reflection sensor, the detection range is increased, the detection speed is accelerated, and the test efficiency is improved.

[0010] Further, the outer surface of the test box is provided with a sliding door, the outer surface of the base is provided with a control panel, and the transmitting end of the reflection sensor, the receiving end of the reflection sensor, the fan and the exhaust fan are electrically connected with the control panel.

[0011] By adopting the above technical scheme, during detection, after the to-be-detected circuit board is clamped, the sliding door is moved to close the test box, the transmitting end of the reflection sensor, the receiving end of the reflection sensor, the fan and the exhaust fan are turned on by controlling the control panel, external air is sucked into the test box by the fan, dust on the surface of the to-be-detected circuit board is blown away, and the dust is concentrated in the gas collecting hood and discharged out of the test box by the exhaust fan.

[0012] Further, the fan air outlet is connected with a porous spray head.

[0013] By adopting the above technical scheme, during detection, the fan is intermittently started, the wind is blown to the circuit board by the porous spray head, the dust on the surface of the circuit board is cleaned, after the cleaning is completed, the circuit board is blown again, the clamping assembly is rotated under the driving of the rotating shaft, the circuit board is turned over by rotation, and then the four circuit boards are detected by the transmitting end of the reflection sensor and the receiving end of the reflection sensor respectively, the detection efficiency is accelerated, and the detection accuracy is improved.

[0014] Further, the clamping assembly is provided with four groups, and the four groups of clamping assemblies are arranged in a ring array.

[0015] Through adopting the technical scheme, after dusting all the circuit boards to be detected, the transmitting end of the reflection sensor and the receiving end of the reflection sensor detect two groups of circuit boards on the X-axis, after completion, the fan blows once, and two groups of circuit boards on the Y-axis are flipped to the X-axis, and the two groups of circuit boards on the Y-axis are detected, the iron column is attracted by the magnetic force of the magnet, so that the clamping assembly makes the circuit board perpendicular to the sensor light path, the infrared light emitted by the transmitting end of the reflection sensor irradiates the through hole, and the clamping assembly is limited by using magnetic adsorption, so that the clamping assembly is prevented from being flipped due to its own gravity.

[0016] Further, the suction cups are provided in several groups, and the several groups of suction cups are symmetrically distributed.

[0017] Through adopting the technical scheme, the edge of the circuit board to be detected is placed on the lower clamping plate suction cup, then the upper clamping plate is flipped, the magnet attracts the iron block under the action of the magnetic force, so that the upper clamping plate and the lower clamping plate are fixed, the suction cup extrudes the circuit board, and then the circuit board is fixed.

[0018] Further, the upper clamping plates and the lower clamping plates are provided in eight, each two are a group, and there are four groups, and each group of upper clamping plates and lower clamping plates is symmetrically distributed, and the upper clamping plates and the lower clamping plates are rotationally connected.

[0019] Through the above technical scheme, when the circuit board needs to be replaced, the iron block is separated from the magnet by holding the upper clamping plate and the lower clamping plate, and then the upper clamping plate and the lower clamping plate are loosened, the detected circuit board is taken down, the circuit board to be detected is placed, the bidirectional screw rod is rotationally connected with the connecting block, the bidirectional screw rod is rotated by rotating the rotating wheel, the lower clamping plate drives the upper clamping plate to move oppositely under the driving of the bidirectional screw rod, the spacing between the two upper clamping plates and the lower clamping plates is adjusted, so that different sizes of circuit boards are clamped, different sizes of circuit boards are conveniently detected, and the versatility is improved.

[0020] Further, the dust collecting cover is connected with a dust collecting bag through a hoop on one side.

[0021] Through the above technical scheme, the dust in the detection box is concentrated and treated by the dust collecting bag, so that the influence of dust raising on the physical and mental health of workers and the reduction of air pollution is avoided.

[0022] In summary, the utility model mainly has the following beneficial effects:

[0023] 1. The utility model discloses a magnet and iron block are set up, and the magnet is stuck to the iron block, thereby with the upper clamping plate and lower clamping plate fixed, the sucking disc is extruded to the line circuit board of detection, and then fixes the line circuit board of detection, fan and multi -hole shower head are set up, and the wind is blown to the line circuit board surface through the shower head, and the dust in the through -hole is blown out, and the detection accuracy is improved, when all line circuit boards of detection are dusted, the iron column is stuck to the magnet magnetic force, and the clamping assembly makes the line circuit board perpendicular to the light path of the emission end of the opposite -emitting sensor, thereby convenient detection, and the clamping assembly is positioned using magnetic adsorption, and the overturning under the gravity of clamping assembly itself is avoided, when detecting, opposite -emitting sensor emission end is detected to two groups of line circuit boards on X axle first, and then starts the fan again, and under the wind swing, two groups of line circuit boards of Y axle are overturned to X axle, and two groups of line circuit boards of Y axle are detected, and the detection efficiency is improved.

[0024] 2. When the line circuit board of different sizes needs to be detected, the two-way screw rod and the runner are set up, the two-way screw rod is rotated by rotating the runner, the lower clamping plate drives the upper clamping plate to move oppositely under the drive of the guide rod, the spacing between the two upper clamping plates and the lower clamping plate is adjusted, thereby clamping the line circuit board of different sizes, and the detection of the line circuit board of different sizes is facilitated, and the versatility is improved. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is the structural schematic diagram of the utility model;

[0026] Figure 2 It is the back structure schematic diagram of the utility model;

[0027] Figure 3 It is the upper clamping plate and lower clamping plate cross section structure schematic diagram of the utility model;

[0028] Figure 4 It is the upper clamping plate and lower clamping plate opening structure schematic diagram of the utility model.

[0029] In the drawing: 1, base; 2, inspection box; 3, control panel; 4, fixed frame; 5, connecting plate; 6, sliding door; 7, opposite -emitting sensor emission end; 8, opposite -emitting sensor receiving end; 9, pivot; 10, clamping assembly; 1001, connecting block; 1002, two -way screw rod; 1003, guide rod; 1004, upper clamping plate; 1005, lower clamping plate; 1006, iron block; 1007, magnet; 1008, sucking disc; 1009, runner; 11, iron column; 12, multi -hole shower head; 13, dust collecting hood; 14, exhaust fan; 15, fan; 16, dust collecting bag. DETAILED DESCRIPTION

[0030] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0031] The embodiments of this utility model will be described below based on its overall structure.

[0032] Example 1: An automatic testing fixture for ultra-large number of test points and ultra-large size vehicle-mounted circuit boards, such as... Figures 1-4 As shown, the device includes a base 1, an inspection box 2 on top of the base 1, a fan 15 on the back of the inspection box 2, an iron column 11 rotatably connected to one side of the inside of the inspection box 2, a dust collection hood 13 on the other side of the inside of the inspection box 2, an exhaust fan 14 inside the dust collection hood 13, a rotating shaft 9 connected to the middle of the inside of the inspection box 2 via a fixing frame 4, a clamping assembly 10 on the outer surface of the rotating shaft 9, the clamping assembly 10 including a connecting block 1001, a guide rod 1003 and a double-acting screw 1002 connected inside the connecting block 1001, a rotating wheel 1009 at one end of the double-acting screw 1002, and a lower clamping plate 1005 connected to the outer surface of the double-acting screw 1002 and the guide rod 1003. Magnet 1007 is provided on the inner wall of the lower clamping plate 1005. The back of the lower clamping plate 1005 is connected to the upper clamping plate 1004. Iron block 1006 is provided on the inner wall of the upper clamping plate 1004. Suction cups 1008 are provided at the bottom of the upper clamping plate 1004 and the top of the lower clamping plate 1005. A through-beam sensor transmitter 7 is provided at the top of the inside of the inspection box 2 through the connecting plate 5. A through-beam sensor receiver 8 is provided at the bottom of the inside of the inspection box 2 through the connecting plate 5. Infrared light is emitted to the circuit board by the through-beam sensor transmitter 7. The infrared light passes through the through hole and is received by the through-beam sensor receiver 8. The light signal is converted into an electrical signal and transmitted to the computer for comparison, thereby detecting whether the through hole on the circuit board is unobstructed.

[0033] See Figure 1 In the above embodiments, both the through-beam sensor transmitter 7 and the through-beam sensor receiver 8 are provided with several sets, and the positions of the several sets of through-beam sensor transmitters 7 and through-beam sensor receivers 8 are corresponding. By setting multiple sets of through-beam sensor transmitters 7 and through-beam sensor receivers 8, the detection range is increased, thereby speeding up the detection and improving the testing efficiency.

[0034] See Figure 1In the above embodiment, the outer surface of the test box 2 is provided with a sliding door 6, the outer surface of the base 1 is provided with a control panel 3, and the emitter end 7 of the reflection sensor, the receiver end 8 of the reflection sensor, the fan 15 and the exhaust fan 14 are all electrically connected with the control panel 3. During detection, after clamping the circuit board to be detected, the sliding door 6 is moved to close the test box, the emitter end 7 of the reflection sensor, the receiver end 8 of the reflection sensor, the fan 15 and the exhaust fan 14 are opened by controlling the control panel 3, external air is sucked into the test box by the fan 15, and dust on the surface of the circuit board to be detected is blown away, and the dust is concentrated in the gas hood and discharged out of the test box by the exhaust fan 14.

[0035] Referring to Figure 1 In the above embodiment, the air outlet end of the fan 15 is connected with a porous spray head 12. During detection, the fan 15 is intermittently started, and air is blown to the circuit board through the porous spray head 12 to clean the dust on the surface of the circuit board. After cleaning, the circuit board is blown again, so that the clamping assembly 10 rotates under the drive of the rotating shaft 9, the circuit board is turned over by rotation, and then the four through holes of the circuit board are detected by the emitter end 7 of the reflection sensor and the receiver end 8 of the reflection sensor respectively, so as to speed up the detection efficiency and improve the detection accuracy.

[0036] Referring to Figure 1 and Figure 3 In the above embodiment, the clamping assembly 10 is provided with four groups, and the four groups of clamping assemblies 10 are arranged in a ring array. After dust removal of all the circuit boards to be detected, the emitter end 7 of the reflection sensor and the receiver end 8 of the reflection sensor first detect two groups of circuit boards on the X-axis, then the fan 15 blows once, the two groups of circuit boards on the Y-axis are turned over to the X-axis, and the two groups of circuit boards on the Y-axis are detected. The iron column 11 is attracted by the magnetic force of the magnet 1007, so that the clamping assembly 10 makes the circuit board perpendicular to the sensor light path, which facilitates the emitter end 7 of the reflection sensor to emit infrared light to irradiate the through hole, and at the same time, the clamping assembly 10 is limited by magnetic adsorption to avoid turning over due to its own gravity.

[0037] Referring to Figure 3 and Figure 4 In the above embodiment, the suction cups 1008 are provided in several groups, and the several groups of suction cups 1008 are symmetrically distributed. The edge of the circuit board to be detected is placed on the suction cups 1008 of the lower clamping plate 1005, and then the upper clamping plate 1004 is turned over. Under the action of magnetic force, the magnet 1007 attracts the iron block 1006, so as to fix the upper clamping plate 1004 and the lower clamping plate 1005. The suction cups 1008 extrude the circuit board, and then fix the circuit board.

[0038] Referring to Figure 1 , Figure 3 and Figure 4In the above embodiment, the upper clamping plates 1004 and the lower clamping plates 1005 are provided with eight, two groups, a total of four groups, and each group of upper clamping plates 1004 and lower clamping plates 1005 is symmetrically distributed. The upper clamping plate 1004 is rotatably connected with the lower clamping plate 1005. When the circuit board needs to be replaced, the upper clamping plate 1004 and the lower clamping plate 1005 are held at the same time, the iron block 1006 is separated from the magnet 1007, and then the upper clamping plate 1004 and the lower clamping plate 1005 are loosened. The detected circuit board is taken down, and the circuit board to be detected is placed in. The bidirectional screw rod 1002 is rotatably connected with the connecting block 1001. The bidirectional screw rod 1002 is rotated by rotating the rotating wheel 1009. Under the driving of the bidirectional screw rod 1002, the lower clamping plate 1005 drives the upper clamping plate 1004 to move oppositely through the guide rod 1003. The spacing between the two upper clamping plates 1004 and the lower clamping plates 1005 is adjusted, so that different sizes of circuit boards are clamped, different sizes of circuit boards are conveniently detected, and the versatility is improved.

[0039] Example two: In order to avoid the direct discharge of dust affecting the physical and mental health of employees, example two is improved on the basis of example one, refer to Figure 2 The dust collecting bag 16 is connected with the dust collecting cover 13 on one side through a hoop. The dust in the detection box is concentrated and treated through the dust collecting bag 16, so as to avoid the influence of dust raising on the physical and mental health of workers and reduce air pollution.

[0040] The implementation principle of the utility model discloses: the staff opens upper clamping plate 1004 and lower clamping plate 1005, rotates the rotating wheel 1009 and drives the bidirectional screw rod 1002 to rotate, is guided through the guide rod 1003, makes lower clamping plate 1005 drive upper clamping plate 1004 to move, and then two upper clamping plates 1004 and two lower clamping plates 1005 are adjusted to the appropriate position, then after the line board to be detected is placed on the suction cup 1008 of lower clamping plate 1005, upper clamping plate 1004 is closed, under the magnetic force of magnet 1007, magnet 1007 is adsorbed to iron block 1006, and then the suction cup 1008 on upper clamping plate 1004 and the suction cup 1008 on lower clamping plate 1005 will be fixed to the line board to be detected, and after the line board to be detected is fixed in turn, push-pull door 6 is pushed and the detection box is sealed, and fan 15, exhaust fan 14, transmitting end 7 of the opposite type sensor and receiving end 8 of the opposite type sensor are opened in turn by the control panel 3, at this moment, fan 15 intermittently blows the wind to the line board to be detected through the porous spray head 12 and blows away the dust, and exhaust fan 14 inhales the dust into dust collecting cover 13 and falls into dust collecting bag 16, when all the line board to be detected surface is cleaned, at this moment, magnet 1007 generates suction force to iron column 11, so that clamping assembly 10 keeps the balance state, transmitting end 7 of the opposite type sensor emits infrared light to detect two groups of line board through holes on X axis, and fan 15 is started again to blow the line board, under the action of the wind, clamping assembly 10 rotates around rotating shaft 9 and turns over the line board to be detected on Y axis to X axis for detection, and receiving end 8 of the opposite type sensor receives the light path and sends to the computer for comparison, so as to determine whether the line board is qualified.

[0041] Although the embodiments of the utility model have been shown and described, the specific embodiments are only the explanation of the utility model, and are not the limitation of the utility model, and the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable way, and the person skilled in the art can make the modification, replacement and change without creative contribution after reading the specification without departing from the principles and the purpose of the utility model, and the utility model is protected by the patent law as long as in the scope of the claims of the utility model.

Claims

1. A large-point-count and large-size vehicle-mounted circuit board automatic test fixture, comprising a base (1), characterized in that: The base (1) top is equipped with the test box (2), the test box (2) back is equipped with fan (15), the test box (2) inside one side is rotatably connected with iron column (11), the test box (2) inside other side is equipped with dust hood (13), the dust hood (13) is equipped with exhaust fan (14), the test box (2) inside middle is connected with rotating shaft (9) through fixing frame (4), the rotating shaft (9) outer surface is equipped with clamping assembly (10), the clamping assembly (10) includes connecting block (1001), the connecting block (1001) inside is connected with guide rod (1003) and bidirectional screw rod (1002), the bidirectional screw rod (1002) one end is equipped with rotating wheel (1009), the bidirectional screw rod (1002) and guide rod (1003) outer surface are connected with lower clamping plate (1005), the lower clamping plate (1005) inner wall is equipped with magnet (1007), the lower clamping plate (1005) back is connected with upper clamping plate (1004), the upper clamping plate (1004) inner wall is equipped with iron block (1006), the upper clamping plate (1004) bottom and lower clamping plate (1005) top are equipped with suction cup (1008).

2. The automatic test fixture for a vehicle-mounted circuit board with super-large number of points and super-large size according to claim 1, characterized in that: The test box (2) inside upper is equipped with the opposite emission type sensor emission end (7) through the connecting plate (5), the test box (2) inside lower is equipped with the opposite emission type sensor receiving end (8) through the connecting plate (5).

3. The automatic test fixture for a vehicle-mounted circuit board with super-large number of points and super-large size according to claim 2, characterized in that: The opposite emission type sensor emission end (7) and opposite emission type sensor receiving end (8) are equipped with several groups, and the positions of the several groups of opposite emission type sensor emission end (7) and opposite emission type sensor receiving end (8) correspond.

4. The automatic test fixture for vehicle-mounted circuit board with super-large number of points and super-large size according to claim 2, characterized in that: The test box (2) outer surface is equipped with sliding door (6), the base (1) outer surface is equipped with control panel (3), and the opposite emission type sensor emission end (7), opposite emission type sensor receiving end (8), fan (15) and exhaust fan (14) are electrically connected with control panel (3).

5. The automatic test fixture for vehicle-mounted circuit board with super-large number of points and super-large size according to claim 1, characterized in that: The fan (15) outlet end is connected with the porous spray head (12).

6. The automatic test fixture for a vehicle wiring board according to claim 1, wherein: The clamping assembly (10) is provided with four groups, and the four groups of clamping assemblies (10) are arranged in an annular array.

7. The automatic test fixture for a vehicle-mounted circuit board with super-large number of points and super-large size according to claim 1, characterized in that: The suction cup (1008) is provided with several groups, and the several groups of suction cups (1008) are symmetrically distributed.

8. The automatic test fixture for a super-large-sized vehicle-mounted circuit board according to claim 6, characterized in that: The number of upper clamping plates (1004) and lower clamping plates (1005) is eight, every two is a group, a total of four groups, and each group of upper clamping plates (1004) and lower clamping plates (1005) is symmetrically distributed, and the upper clamping plate (1004) and the lower clamping plate (1005) are rotatably connected.

9. The automatic test fixture for a vehicle wiring board according to claim 1, wherein: The dust collecting bag (16) is connected to the dust collecting bag (16) through the hoop on one side of the dust collecting bag (16).

Images