阅读说明：本技术 一种用于电子部件的测试设备 (Test equipment for electronic component ) 是由 张国建 于 2021-07-09 设计创作，主要内容包括：本发明属于电子部件技术领域,具体的说是一种用于电子部件的测试设备,包括测试台；测试台顶部开设有放置槽,放置槽开口处为喇叭状的梯形结构；放置槽远离开口的一端设有测试单元,放置槽内转动连接有主动辊和从动辊,主动辊和从动辊外周均固连有弹性层,主动辊与从动辊之间套设有输送带；主动辊一端固连有一号齿轮,测试台内与一号齿轮对应位置固连有电机,电机输出轴固连的二号齿轮与一号齿轮啮合；本发明通过将电路板的插接头对准放置槽的梯形开口处,驱动输送带将电路板轻微按压并向放置槽的槽底方向输送,使得电路板上的插接头与检测单元平整稳定的良好接触,增加电路板的检测效率。(The invention belongs to the technical field of electronic components, in particular to a test device for an electronic component, which comprises a test board; the top of the test board is provided with a placing groove, and the opening of the placing groove is of a horn-shaped trapezoidal structure; a test unit is arranged at one end, away from the opening, of the placing groove, a driving roller and a driven roller are rotationally connected in the placing groove, elastic layers are fixedly connected to the peripheries of the driving roller and the driven roller, and a conveying belt is sleeved between the driving roller and the driven roller; one end of the driving roller is fixedly connected with a first gear, a motor is fixedly connected with a position, corresponding to the first gear, in the test board, and a second gear fixedly connected with an output shaft of the motor is meshed with the first gear; according to the invention, the plug connector of the circuit board is aligned to the trapezoidal opening of the placing groove, the conveying belt is driven to slightly press the circuit board and convey the circuit board to the bottom direction of the placing groove, so that the plug connector on the circuit board is in smooth and stable good contact with the detection unit, and the detection efficiency of the circuit board is increased.)

1. A test apparatus for electronic components, characterized in that: comprises a test bench (1); a placing groove (11) is formed in the top of the test board (1), and the opening of the placing groove (11) is of a horn-shaped trapezoidal structure; a testing unit is arranged at one end, far away from the opening, of the placing groove (11), a driving roller (12) and a driven roller (13) are rotationally connected in the placing groove (11), elastic layers (14) are fixedly connected to the peripheries of the driving roller (12) and the driven roller (13), and a conveying belt (15) is sleeved between the driving roller (12) and the driven roller (13); one end of the driving roller (12) is fixedly connected with a first gear (16), a motor (17) is fixedly connected with the position, corresponding to the first gear (16), in the test bench (1), and a second gear (18) fixedly connected with an output shaft of the motor (17) is meshed with the first gear (16); the gap between the bottom of the conveying belt (15) and the placing groove (11) is slightly smaller than the thickness of the circuit board to be detected.

2. A test apparatus for electronic components according to claim 1, characterized in that: the guide roller (2) is rotationally connected in the placing groove (11) on one side, away from the driven roller (13), of the driving roller (12), and the conveying belt (15) is sleeved on the periphery of the guide roller (2); the conveying belt (15) between the guide roller (2) and the driving roller (12) is obliquely and upwards arranged, and a group of flexible brush hairs (21) are uniformly distributed on the periphery of the conveying belt (15).

3. A test apparatus for electronic components according to claim 2, characterized in that: a sliding groove (22) is formed in one side, close to the bottom of the placing groove (11), of the test board (1), a top plate (23) is connected in the sliding groove (22) in a sliding mode, and a spring is fixedly connected between the top plate (23) and the bottom of the sliding groove (22); a lever (24) is arranged in a cavity formed in the test board (1) at a position corresponding to the top plate (23), and the middle part of the lever (24) is hinged with the test board (1) through a rotating pin; one end of the lever (24) props against one end of the top plate (23) positioned in the sliding groove (22), and the other end of the lever is fixedly connected with an arc-shaped elastic brake block (25); the brake pad (25) faces to one side close to the driven roller (13); a delay reversing switch (26) is fixedly connected in a cavity at one end of the lever (24) close to the elastic brake block (25), and the delay reversing switch (26) is connected with the motor (17) through a controller; the time-delay reversing switch (26) is positioned on one side of the lever (24) far away from the driven roller (13).

4. A test apparatus for electronic components according to claim 3, characterized in that: the test unit comprises a processor and a contact board (3); a sliding groove (31) is formed in the test board (1) at the top of the top plate (23), and the contact plate (3) is embedded into the sliding groove (31) and is in sliding connection with the sliding groove (31); the bottom of the contact plate (3) is in sliding connection with the top surface of the top plate (23), the top of the contact plate (3) is hinged with the test bench (1) through an air cylinder (32), and the air cylinder (32) is connected with a high-pressure air source through a control valve; a group of U-shaped grooves (33) are uniformly formed in the bottom of the contact plate (3), and probes (34) arranged at the bottoms of the U-shaped grooves (33) are electrically connected with the processor through wires.

5. A test apparatus for electronic components according to claim 4, characterized in that: a magnetic block (35) is fixedly connected to one side, close to the sliding groove (31), of the top of the contact plate (3); a group of first bumps (37) are uniformly distributed in a groove (36) formed in one side, close to the top plate (23), of the contact plate (3), a group of second bumps (38) are fixedly connected to the positions, corresponding to the first bumps (37), in the sliding groove (31), and the first bumps (37) and the second bumps (38) are arranged at intervals; the sliding groove (31) is wedge-shaped, and the depth of the bottom of the sliding groove (31) is larger than that of the top of the sliding groove.

6. A test apparatus for electronic components according to claim 5, characterized in that: the side wall of the groove (36) at the periphery of the first bump (37) is fixedly connected with a group of elastic membranes (4), and the elastic membranes (4) completely wrap the first bump (37) of the column and are arranged at intervals with the first bump (37); spray holes (41) are formed in comb teeth formed between the adjacent U-shaped grooves (33), and the spray holes (41) are communicated with gaps between the elastic membrane (4) and the first convex blocks (37) through communication holes.

7. A test apparatus for electronic components according to claim 6, characterized in that: a rectangular groove (42) is formed in the position, corresponding to the magnetic block (35), of the contact plate (3); the magnetic block (35) is a flexible rubber bag, one side, far away from the bottom of the sliding groove (31), of the magnetic block (35) is fixedly connected with the side wall of the rectangular groove (42), and magnetic mud is filled in the magnetic block (35).

8. A test apparatus for electronic components according to claim 7, characterized in that: an arc-shaped insert rod (43) is connected in the U-shaped groove (33) in a sliding mode, and the insert rod (43) is fixedly connected with the probe (34); the probe (34) is inserted into a sliding hole (44) formed in the bottom of the U-shaped groove (33) and is in sliding connection with the sliding hole (44); a spring is sleeved on the probe (34) between the inserted bar (43) and the bottom of the U-shaped groove (33).

9. A test apparatus for electronic components according to claim 8, characterized in that: a group of arc-shaped grinding knives (45) are uniformly distributed on two sides of the inner periphery of the inserted rod (43), and the grinding knives (45) are elastic; the grinding knives (45) on the two sides of the inserted bar (43) are arranged in a staggered manner; a group of arc-shaped holes (46) are symmetrically formed in the inserted rod (43), through holes (47) are formed in the positions, corresponding to the grinding knives (45), of the arc-shaped holes (46), and the grinding knives (45) penetrate through the through holes (47) and are connected with the through holes (47) in a sliding and sealing mode; a spring is fixedly connected between the grinding knife (45) and the inner wall of the arc-shaped hole (46); one end of the probe (34) close to the inserted rod (43) is provided with a blind hole (48) penetrating through the inserted rod (43), and the opening of the blind hole (48) is flared and outwards diffused; a sliding rod (49) is connected in the blind hole (48) in a sliding manner, and a spring is fixedly connected between the sliding rod (49) and the bottom of the blind hole (48); the arc-shaped hole (46) is communicated with the blind hole (48), and one end of the arc-shaped hole (46) close to the blind hole (48) is connected with the elastic column (5) in a sliding mode.

10. A test apparatus for electronic components according to claim 9, characterized in that: the bottom of the sliding rod (49) is provided with an elastic herringbone scraper (51); a group of first elastic sheets (52) are uniformly distributed on the periphery of the sliding rod (49), a second elastic sheet (53) is fixedly connected to the sliding rod (49) on one side of the first elastic sheet (52), the first elastic sheet (52) and the second elastic sheet (53) are uniform and semicircular, and the end parts of the first elastic sheet and the second elastic sheet are mutually lapped; the end part of the second elastic sheet (53) is positioned at one side close to the sliding rod (49), and the end part of the second elastic sheet (53) is fixedly connected with a first magnetic ball (54); a second magnetic ball (55) is fixedly connected to the position, corresponding to the first magnetic ball (54), of the sliding rod (49), and the first magnetic ball (54) and the second magnetic ball (55) are mutually exclusive; a pair of third magnetic balls (56) is symmetrically and fixedly connected to the elastic rods on the two sides of the second magnetic ball (55), and the third magnetic balls (56) and the first magnetic balls (54) are mutually attracted.

Technical Field

The invention belongs to the technical field of electronic components, and particularly relates to a test device for an electronic component.

Background

The circuit board has very extensive application in each field, under many circumstances, needs to splice the polylith circuit board, and prior art joins in marriage alloy finger through the bayonet joint and inserts female seat for the gold finger that draws forth on the bayonet joint and the contact of corresponding position in the female seat accomplish the high-speed joint between the circuit board.

Some technical solutions related to the detection of electronic components have appeared in the prior art, for example, a chinese patent with application number 2019215976734 discloses a test apparatus for electronic components, which includes a test system configured to test electronic components; and a test fixture configured to secure the electronic component on a test system, wherein the test system comprises: a locking mechanism for connecting the test system with the test fixture, wherein the locking mechanism comprises: an operating member for being operated in a rotating manner; a locking member for connecting and locking the test fixture; and a driving structure connected between the operating member and the locking member for converting a torque of the operating member into a driving force for driving the locking member in a horizontal direction, so that the locking member is moved in the horizontal direction to switch between a releasing position for releasing the test fixture at the first side and a locking position for locking the test fixture at the second side. According to the utility model discloses an electronic components's test equipment provides quick and stable connection between test system and the test fixture.

However, in the prior art, the plugging connector on the circuit board is manually aligned to the contact on the testing instrument to further perform the power-on test on the circuit board, but the manual alignment efficiency is low, and the circuit board cannot be in good contact with the contact on the testing instrument due to uneven force application, so that the error rate of the detection result is high, good products are treated as defective products, and the detection precision and the detection efficiency are reduced.

To this end, the invention provides a test apparatus for electronic components.

Disclosure of Invention

In order to make up for the defects of the prior art and solve the problems that in the prior art, a plug connector on a circuit board is manually aligned to a contact on a test instrument so as to carry out power-on test on the circuit board, but the manual alignment efficiency is low, part of the plug connector cannot be in good contact with the contact on the test instrument due to uneven force application of the circuit board, the error rate of a detection result is high, a good product is treated as a defective product, and the detection precision and the detection efficiency are reduced, the invention provides the test equipment for the electronic component.

The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a test device for electronic components, which comprises a test bench; a placing groove is formed in the top of the test board, and the opening of the placing groove is of a horn-shaped trapezoidal structure; the testing unit is arranged at one end, away from the opening, of the placing groove, the driving roller and the driven roller are rotationally connected in the placing groove, elastic layers are fixedly connected to the peripheries of the driving roller and the driven roller, and a conveying belt is sleeved between the driving roller and the driven roller; one end of the driving roller is fixedly connected with a first gear, a motor is fixedly connected with a position, corresponding to the first gear, in the test board, and a second gear fixedly connected with an output shaft of the motor is meshed with the first gear; the gap between the bottom of the conveying belt and the placing groove is slightly smaller than the thickness of the circuit board to be detected; when the testing device works, in the prior art, the plug connector on the circuit board is manually aligned to the contact on the testing instrument so as to further perform power-on testing on the circuit board, but the manual alignment efficiency is low, part of the plug connector cannot be in good contact with the contact on the testing instrument due to uneven force application of the circuit board, so that the error rate of a detection result is high, a good product is treated as a defective product, and the detection precision and the detection efficiency are reduced; at the moment, the plug connector of the circuit board is aligned to the trapezoidal opening of the placing groove, then the first gear and the second gear are driven to rotate through the motor, the conveying belt is driven to slightly press the circuit board and convey the circuit board to the bottom direction of the placing groove, so that the plug connector on the circuit board is in smooth and stable good contact with the detection unit, force application unevenness of manually pressing the circuit board is reduced, alignment efficiency of the circuit board and the detection unit is increased, detection precision and detection efficiency of the circuit board are guaranteed, and labor intensity is reduced.

Preferably, a guide roller is rotatably connected in the placing groove at one side of the driving roller, which is far away from the driven roller, and the conveying belt is sleeved on the periphery of the guide roller; the conveying belt between the guide roller and the driving roller is obliquely and upwards arranged, and a group of flexible bristles are uniformly distributed on the periphery of the conveying belt; prop up the conveyer belt front end through the guide roll for the conveyer belt is the slope and arranges, advances when sending into the conveying belt bottom with handheld circuit board, reduces the conveyer belt and hinders the clamp of hand, increases to be liable to reduce through the brush hair and exert pressure to the inhomogeneous of circuit board, reduces the damage of circuit board in the testing process, and brush hair contact hand exerts flexible pressure to hand simultaneously, reminds operating personnel in time to loosen one's hand, further reduces the potential safety hazard.

Preferably, a sliding groove is formed in one side, close to the bottom of the placing groove, of the test board, a top plate is connected to the sliding groove in a sliding mode, and a spring is fixedly connected between the top plate and the bottom of the sliding groove; a lever is arranged in a cavity formed in the test board corresponding to the top plate, and the middle part of the lever is hinged with the test board through a rotating pin; one end of the lever props against one end of the top plate, which is positioned in the sliding groove, and the other end of the lever is fixedly connected with an arc-shaped elastic brake block; the brake pad faces to one side close to the driven roller; a delay reversing switch is fixedly connected in a cavity at one end of the lever, which is close to the elastic brake block, and the delay reversing switch is connected with a motor through a controller; the time-delay reversing switch is positioned on one side of the lever, which is far away from the driven roller; when carrying the circuit board through the conveyer belt and being close to the roof position, the circuit board extrudees the roof for the roof slides to the spout and drives the lever rotation, and then touches time delay change-over switch and makes the motor upset after stalling the certain time, detect the operation through the test unit in this stalling time, detect through motor reversal output circuit board after accomplishing, improve the automation level that the circuit board detected, the brake block rotates and extrudes the conveyer belt along with the lever simultaneously, increase the stall speed of conveyer belt, further increase the detection efficiency of detecting element to the circuit board.

Preferably, the test unit comprises a processor and a contact board; a sliding groove is formed in the test board at the top of the top plate, and the contact plate is embedded into the sliding groove and is in sliding connection with the sliding groove; the bottom of the contact plate is in sliding connection with the top surface of the top plate, the top of the contact plate is hinged with the test board through an air cylinder, and the air cylinder is connected with a high-pressure air source through a control valve; a group of U-shaped grooves are uniformly formed in the bottom of the contact plate, and probes arranged at the bottoms of the U-shaped grooves are electrically connected with the processor through wires; after the circuit board pushes the top plate to the bottom of the sliding groove, the bottom of the contact plate loses support and falls on a metal part of the plug connector, and the U-shaped groove is matched with a gap between adjacent plug connectors on the circuit board, so that the automatic alignment probe of the plug connector on the circuit board is further improved, the alignment efficiency and the alignment precision are increased, and the detection efficiency of the circuit board is further improved.

Preferably, one side of the top of the contact plate, which is close to the sliding groove, is fixedly connected with a magnetic block; a group of first bumps are uniformly distributed in a groove formed in one side, close to the top plate, of the contact plate, a group of second bumps are fixedly connected to positions, corresponding to the first bumps, in the sliding groove, and the first bumps and the second bumps are arranged at intervals; the sliding groove is wedge-shaped, and the depth of the bottom of the sliding groove is greater than that of the top of the sliding groove; when the contact plate slides downwards, the upper end of the contact plate is adsorbed to the bottom of the sliding groove through the magnetic block, and when the first convex block at the lower end of the contact plate slides over the second convex block, the bottom of the contact plate is driven to swing continuously, so that the probe continuously transversely slides and wipes a golden finger at the plug connector, the golden finger is wiped and an oxidation layer is removed, and good electrical connection between the probe and the plug connector is guaranteed.

Preferably, the side wall of the groove at the periphery of the first bump is fixedly connected with a group of elastic membranes, and the elastic membranes completely wrap the first bump of the column and are arranged at intervals with the first bump; spray holes are formed in comb teeth formed between every two adjacent U-shaped grooves and are communicated with gaps between the elastic films and the first convex blocks through communication holes; compressed air generated when the elastic membrane is extruded is sprayed out through the spray holes, and partial metal powder formed by scraping at the plug connector is purged, so that short circuit damage caused by the fact that the metal powder falls on the circuit board is reduced.

Preferably, a rectangular groove is formed in the position, corresponding to the magnetic block, of the contact plate; the magnetic block is a flexible rubber bag, one side of the magnetic block, which is far away from the bottom of the sliding groove, is fixedly connected with the side wall of the rectangular groove, and magnetic mud is filled in the magnetic block; one side of the magnetic block is fixedly connected with the side wall of the rectangular groove, so that the effective adsorption area of the magnetic block and the sliding groove is increased when the contact plate is deformed, and the stable sliding of the contact plate is further ensured.

Preferably, an arc-shaped inserted bar is connected in the U-shaped groove in a sliding manner, and the inserted bar is fixedly connected with the probe; the probe is inserted into a sliding hole formed in the bottom of the U-shaped groove and is in sliding connection with the sliding hole; a spring is sleeved on the probe between the inserted rod and the bottom of the U-shaped groove; the plug-in connector is further positioned and extruded through the plug rod, so that the reliable connection between the plug-in connector and the probe is increased.

Preferably, a group of arc-shaped grinding knives are uniformly distributed on two sides of the inner periphery of the inserted rod, and the grinding knives are elastic; the grinding knives on the two sides of the inserted bar are arranged in a staggered manner; a group of arc-shaped holes are symmetrically formed in the inserted rod, through holes are formed in the arc-shaped holes and the positions corresponding to the grinding knives, and the grinding knives are inserted into the through holes in a penetrating mode and are connected with the through holes in a sliding and sealing mode; a spring is fixedly connected between the grinding knife and the inner wall of the arc-shaped hole; one end of the probe close to the inserted rod is provided with a blind hole penetrating through the inserted rod, and the opening of the blind hole is flared and outwards diffused; a sliding rod is connected in the blind hole in a sliding manner, and a spring is fixedly connected between the sliding rod and the bottom of the blind hole; the arc-shaped hole is communicated with the blind hole, and one end of the arc-shaped hole, which is close to the blind hole, is connected with the elastic column in a sliding manner; the golden finger on plug-in connector surface is constantly scraped to the grinding sword when gliding through the inserted bar, further increases the efficiency of getting rid of golden finger surface oxide layer, and crisscross the grinding sword of arranging simultaneously receives crisscross slip in the through-hole when extrudeing for crisscross formation compressed air in the arc hole of inserted bar both sides, compressed air drive elasticity post constantly extrudees the slide bar horizontal hunting, further increases the efficiency that the slide bar slided and scraped the oxide layer when supporting the plug-in connector.

Preferably, the bottom of the sliding rod is provided with an elastic herringbone scraper; a group of first elastic pieces are uniformly distributed on the periphery of the sliding rod, a second elastic piece is fixedly connected to the sliding rod on one side of the first elastic piece, the first elastic piece and the second elastic piece are uniform and semicircular in shape, and the end parts of the first elastic piece and the second elastic piece are mutually lapped; the end part of the second elastic sheet is positioned at one side close to the sliding rod, and the end part of the second elastic sheet is fixedly connected with a first magnetic ball; a second magnetic ball is fixedly connected to the position, corresponding to the first magnetic ball, on the sliding rod, and the first magnetic ball and the second magnetic ball are mutually exclusive; a pair of third magnetic balls are symmetrically and fixedly connected to the elastic rods on the two sides of the second magnetic ball, and the third magnetic balls and the first magnetic balls attract each other; support the bayonet joint through the scraper and clean the bayonet joint when expanding to both sides, the cooperation slide bar is to the slide bar when in the blind hole, and a shell fragment and No. two mutual overlap joints of shell fragment and receive the extrusion of elasticity post, further increase the longitudinal oscillation of scraper, and the cooperation magnetic ball constantly receives repels and attracts, increases the vibration of No. two shell fragments and slide bar, and the efficiency of oxide layer is got rid of in the vibration of further increase scraper, increases the detection precision of circuit board.

The invention has the following beneficial effects:

1. according to the testing equipment for the electronic component, the plug connector of the circuit board is aligned to the trapezoidal opening of the placing groove, then the first gear and the second gear are driven to rotate through the motor, the conveying belt is driven to slightly press the circuit board and convey the circuit board to the bottom direction of the placing groove, so that the plug connector on the circuit board is in smooth and stable good contact with the detection unit, force application nonuniformity of manually pressing the circuit board is reduced, alignment efficiency of the circuit board and the detection unit is improved, detection precision and detection efficiency of the circuit board are guaranteed, and labor intensity is reduced.

2. According to the testing equipment for the electronic component, the scraper is used for abutting against the plug connector and scrubbing the plug connector when expanding towards two sides, when the sliding rod is matched to move towards the blind hole, the first elastic sheet and the second elastic sheet are mutually overlapped and are extruded by the elastic column, the longitudinal swing of the scraper is further increased, the vibration of the second elastic sheet and the sliding rod is increased by matching with the continuous repulsion and attraction of the first magnetic ball, the efficiency of removing an oxide layer by the vibration of the scraper is further increased, and the detection precision of a circuit board is increased.

Drawings

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

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a partial cross-sectional view of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

FIG. 4 is a schematic view of a contact plate structure according to the present invention;

FIG. 5 is a cross-sectional view of a magnetic block in the present invention;

FIG. 6 is a partial cross-sectional view of the bayonet of the present invention;

FIG. 7 is an enlarged view of a portion of FIG. 6 at B;

in the figure: the device comprises a test board 1, a placing groove 11, a driving roller 12, a driven roller 13, an elastic layer 14, a conveying belt 15, a first gear 16, a motor 17, a second gear 18, a guide roller 2, bristles 21, a sliding groove 22, a top plate 23, a lever 24, a brake pad 25, a delay reversing switch 26, a contact plate 3, a sliding groove 31, an air cylinder 32, a U-shaped groove 33, a probe 34, a magnetic block 35, a groove 36, a first bump 37, a second bump 38, an elastic membrane 4, a spray hole 41, a rectangular groove 42, an inserted link 43, a sliding hole 44, a grinding cutter 45, an arc-shaped hole 46, a through hole 47, a blind hole 48, a sliding rod 49, an elastic column 5, a scraper 51, a first elastic sheet 52, a second elastic sheet 53, a first magnetic ball 54, a second magnetic ball 55 and a third magnetic ball 56.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

Example one

As shown in fig. 1 to 5, a testing apparatus for electronic components according to the present invention includes a testing table 1; a placing groove 11 is formed in the top of the test board 1, and an opening of the placing groove 11 is of a horn-shaped trapezoidal structure; a testing unit is arranged at one end, away from the opening, of the placing groove 11, a driving roller 12 and a driven roller 13 are rotatably connected in the placing groove 11, elastic layers 14 are fixedly connected to the peripheries of the driving roller 12 and the driven roller 13, and a conveying belt 15 is sleeved between the driving roller 12 and the driven roller 13; one end of the driving roller 12 is fixedly connected with a first gear 16, a motor 17 is fixedly connected with the position, corresponding to the first gear 16, in the test board 1, and a second gear 18 fixedly connected with an output shaft of the motor 17 is meshed with the first gear 16; the gap between the bottom of the conveying belt 15 and the placing groove 11 is slightly smaller than the thickness of the circuit board to be detected; when the testing device works, in the prior art, the plug connector on the circuit board is manually aligned to the contact on the testing instrument so as to further perform power-on testing on the circuit board, but the manual alignment efficiency is low, part of the plug connector cannot be in good contact with the contact on the testing instrument due to uneven force application of the circuit board, so that the error rate of a detection result is high, a good product is treated as a defective product, and the detection precision and the detection efficiency are reduced; at the moment, the plug connector of the circuit board is aligned to the trapezoid opening of the placing groove 11, then the first gear 16 and the second gear 18 are driven to rotate through the motor 17, the conveying belt 15 is driven to slightly press the circuit board and convey the circuit board to the bottom direction of the placing groove 11, so that the plug connector on the circuit board is in smooth and stable good contact with the detection unit, force application unevenness of manually pressing the circuit board is reduced, alignment efficiency of the circuit board and the detection unit is improved, detection precision and detection efficiency of the circuit board are further guaranteed, and labor intensity is reduced.

The guide roller 2 is rotatably connected in the placing groove 11 on one side of the driving roller 12, which is far away from the driven roller 13, and the conveying belt 15 is sleeved on the periphery of the guide roller 2; the conveying belt 15 between the guide roller 2 and the driving roller 12 is obliquely and upwards arranged, and a group of flexible brush hairs 21 are uniformly distributed on the periphery of the conveying belt 15; prop up 15 front ends of conveyer belt through guide roll 2 for conveyer belt 15 is the slope and arranges, advances when sending into handheld circuit board in the 15 bottoms of conveyer belt, reduces the clamp wound of conveyer belt 15 to hand, increases to blame 21 and blame the inhomogeneous pressure application that reduces the circuit board, reduces the damage of circuit board in the testing process, and brush hair 21 contacts the hand simultaneously and applys flexible pressure to hand, reminds operating personnel in time to loosen one's hand, further reduces the potential safety hazard.

A sliding groove 22 is formed in one side, close to the bottom of the placing groove 11, of the test board 1, a top plate 23 is connected to the sliding groove 22 in a sliding mode, and a spring is fixedly connected between the top plate 23 and the bottom of the sliding groove 22; a lever 24 is arranged in a cavity formed in the test board 1 at a position corresponding to the top plate 23, and the middle part of the lever 24 is hinged with the test board 1 through a rotating pin; one end of the lever 24 is propped against one end of the top plate 23 positioned in the sliding groove 22, and the other end of the lever is fixedly connected with an arc-shaped elastic brake block 25; the brake pad 25 faces to one side close to the driven roller 13; a delay reversing switch 26 is fixedly connected in a cavity at one end of the lever 24 close to the elastic brake block 25, and the delay reversing switch 26 is connected with the motor 17 through a controller; the time-delay reversing switch 26 is positioned on one side of the lever 24 away from the driven roller 13; when carrying the circuit board near roof 23 position through conveyer belt 15, circuit board extrusion roof 23 for roof 23 slides to spout 22 and drives lever 24 rotatory, and then touch time delay change-over switch 26 and make motor 17 stall overturn after the certain time, detect the operation through the test unit in this stall time, detect the output circuit board through motor 17 reversal after accomplishing, improve the automation level that the circuit board detected, brake block 25 rotates and extrudes conveyer belt 15 along with lever 24 simultaneously, increase the stall speed of conveyer belt 15, further increase the detection efficiency of detection unit to the circuit board.

The test unit comprises a processor and a contact board 3; a sliding groove 31 is formed in the test board 1 at the top of the top plate 23, and the contact plate 3 is embedded in the sliding groove 31 and is in sliding connection with the sliding groove 31; the bottom of the contact plate 3 is in sliding connection with the top surface of the top plate 23, the top of the contact plate 3 is hinged with the test bench 1 through an air cylinder 32, and the air cylinder 32 is connected with a high-pressure air source through a control valve; a group of U-shaped grooves 33 are uniformly formed in the bottom of the contact plate 3, and probes 34 arranged at the bottoms of the U-shaped grooves 33 are electrically connected with the processor through wires; after the circuit board pushes the top plate 23 to the bottom of the sliding groove 22, the bottom of the contact plate 3 loses support and falls on a metal part of the plug connector, and the U-shaped groove 33 is matched to be inserted into a gap between adjacent plug connectors on the circuit board, so that the automatic alignment probe 34 of the plug connector on the circuit board is further improved, the alignment efficiency and the alignment precision are increased, and the detection efficiency of the circuit board is further improved.

A magnetic block 35 is fixedly connected to one side of the top of the contact plate 3, which is close to the sliding groove 31; a group of first bumps 37 are uniformly distributed in a groove 36 formed in one side of the contact plate 3 close to the top plate 23, a group of second bumps 38 are fixedly connected to the positions, corresponding to the first bumps 37, in the sliding groove 31, and the first bumps 37 and the second bumps 38 are arranged at intervals; the sliding groove 31 is wedge-shaped, and the depth of the bottom of the sliding groove 31 is greater than that of the top of the sliding groove; when the contact plate 3 slides downwards, the upper end of the contact plate is adsorbed to the bottom of the sliding groove 31 through the magnetic block 35, and when the first bump 37 at the lower end of the contact plate scratches the second bump 38, the bottom of the contact plate 3 is driven to swing continuously, so that the probe 34 continuously and transversely wipes the golden finger at the plug connector, the golden finger is wiped smoothly, an oxide layer is removed, and good electrical connection between the probe 34 and the plug connector is ensured.

The side wall of the groove 36 at the periphery of the first bump 37 is fixedly connected with a group of elastic membranes 4, and the elastic membranes 4 completely wrap the first bump 37 of the column and are arranged at intervals with the first bump 37; spray holes 41 are formed in comb teeth formed between the adjacent U-shaped grooves 33, and the spray holes 41 are communicated with gaps between the elastic membrane 4 and the first convex blocks 37 through communication holes; compressed air generated when the elastic membrane 4 is squeezed is sprayed out through the spray holes 41, and partial metal powder formed by scraping at the plug connector is purged, so that short-circuit damage caused by the fact that the metal powder falls on a circuit board is reduced.

A rectangular groove 42 is formed in the position, corresponding to the magnetic block 35, of the contact plate 3; the magnetic block 35 is a flexible rubber bag, one side of the magnetic block 35, which is far away from the bottom of the sliding groove 31, is fixedly connected with the side wall of the rectangular groove 42, and magnetic mud is filled in the magnetic block 35; one side of the magnetic block 35 is fixedly connected with the side wall of the rectangular groove 42, so that the effective adsorption area between the magnetic block 35 and the sliding groove 31 when the contact plate 3 deforms is increased, and the stable sliding of the contact plate 3 is further ensured.

An arc-shaped insert rod 43 is slidably connected in the U-shaped groove 33, and the insert rod 43 is fixedly connected with the probe 34; the probe 34 is inserted into a sliding hole 44 formed at the bottom of the U-shaped groove 33 and is in sliding connection with the sliding hole 44; a spring is sleeved on the probe 34 between the inserted rod 43 and the bottom of the U-shaped groove 33; further positioning and squeezing of the bayonet by the bayonet 43 increases the secure connection of the bayonet to the probe 34.

Example two

As shown in fig. 6 to 7, a group of arc-shaped grinding knives 45 are uniformly distributed on two sides of the inner periphery of the insert rod 43, and the grinding knives 45 are elastic; the grinding knives 45 on the two sides of the inserted rod 43 are arranged in a staggered manner; a group of arc-shaped holes 46 are symmetrically formed in the inserting rod 43, through holes 47 are formed in the positions, corresponding to the arc-shaped holes 46 and the grinding knives 45, of the through holes 47, and the grinding knives 45 penetrate through the through holes 47 and are connected with the through holes 47 in a sliding and sealing mode; a spring is fixedly connected between the grinding knife 45 and the inner wall of the arc-shaped hole 46; one end of the probe 34 close to the inserted rod 43 is provided with a blind hole 48 penetrating through the inserted rod 43, and the opening of the blind hole 48 is flared and outwards diffused; a sliding rod 49 is connected in the blind hole 48 in a sliding manner, and a spring is fixedly connected between the sliding rod 49 and the bottom of the blind hole 48; the arc-shaped hole 46 is communicated with the blind hole 48, and one end of the arc-shaped hole 46 close to the blind hole 48 is connected with the elastic column 5 in a sliding mode; when the inserted link 43 slides downwards, the grinding knives 45 continuously scrape the golden fingers on the surface of the inserted link, the removal efficiency of the oxide layer on the surface of the golden fingers is further increased, and meanwhile, the grinding knives 45 arranged in a staggered mode slide in the through holes 47 in a staggered mode when being extruded, so that compressed air is formed in the arc-shaped holes 46 on the two sides of the inserted link 43 in a staggered mode, the compressed air drives the elastic columns 5 to continuously extrude the sliding rods 49 to swing left and right, and the efficiency of sliding and scraping the oxide layer when the sliding rods 49 abut against the inserted link is further increased.

The bottom of the sliding rod 49 is provided with an elastic herringbone scraper 51; a group of first elastic pieces 52 are uniformly distributed on the periphery of the sliding rod 49, a second elastic piece 53 is fixedly connected to the sliding rod 49 on one side of the first elastic piece 52, the first elastic piece 52 and the second elastic piece 53 are uniform and semicircular in arc shape, and the end parts of the first elastic piece 52 and the second elastic piece 53 are mutually lapped; the end part of the second elastic sheet 53 is positioned at one side close to the sliding rod 49, and the end part of the second elastic sheet 53 is fixedly connected with a first magnetic ball 54; a second magnetic ball 55 is fixedly connected to the position, corresponding to the first magnetic ball 54, of the sliding rod 49, and the first magnetic ball 54 and the second magnetic ball 55 repel each other; a pair of third magnetic balls 56 are symmetrically and fixedly connected to the elastic rods on the two sides of the second magnetic ball 55, and the third magnetic balls 56 and the first magnetic ball 54 attract each other; support the bayonet joint through scraper 51 and scrub the bayonet joint when expanding to both sides, cooperation slide bar 49 is to slide bar 49 in to blind hole 48, a shell fragment 52 and No. two shell fragments 53 overlap joint each other and receive the extrusion of elasticity post 5, further increase the longitudinal swing of scraper 51, cooperate the repulsion and the attraction that No. one magnetic ball 54 constantly received, increase No. two shell fragments 53 and slide bar 49's vibration, the efficiency of oxide layer is got rid of in further increase scraper 51's vibration, increase the detection precision of circuit board.

When the device works, the plug connector of the circuit board is aligned to the trapezoidal opening of the placing groove 11, then the motor 17 drives the first gear 16 and the second gear 18 to rotate, the conveyer belt 15 is driven to slightly press the circuit board and convey the circuit board to the bottom direction of the placing groove 11, so that the plug connector on the circuit board is in smooth and stable good contact with the detection unit, the force application nonuniformity of manually pressing the circuit board is reduced, the alignment efficiency of the circuit board and the detection unit is increased, the detection precision and the detection efficiency of the circuit board are further ensured, and the labor intensity is reduced; the front end of the conveying belt 15 is supported by the guide roller 2, so that the conveying belt 15 is arranged obliquely, when the handheld circuit board is conveyed to the bottom of the conveying belt 15, the clamping injury of the conveying belt 15 to the hand is reduced, uneven pressure on the circuit board is reduced by increasing the duty of the bristles 21, the damage of the circuit board in the detection process is reduced, meanwhile, the bristles 21 contact the hand to apply flexible pressure to the hand, an operator is reminded to loosen the hand in time, and the potential safety hazard is further reduced; when the circuit board is conveyed to a position close to the top plate 23 through the conveying belt 15, the circuit board extrudes the top plate 23, so that the top plate 23 slides into the sliding groove 22 and drives the lever 24 to rotate, the delay reversing switch 26 is further triggered to stop the motor 17 for a certain time and then turn over, detection operation is carried out through the testing unit within the stopping time, the circuit board is output through the motor 17 in a reverse rotation mode after detection is finished, the automation level of circuit board detection is improved, meanwhile, the brake pad 25 rotates along with the lever 24 and extrudes the conveying belt 15, the stopping speed of the conveying belt 15 is increased, and the detection efficiency of the detecting unit on the circuit board is further increased; after the circuit board pushes the top plate 23 to the bottom of the sliding groove 22, the bottom of the contact plate 3 loses support and falls on a metal part of the plug connector, and the U-shaped groove 33 is inserted into a gap between adjacent plug connectors on the circuit board, so that the automatic alignment probe 34 of the plug connector on the circuit board is further improved, the alignment efficiency and the alignment precision are increased, and the detection efficiency of the circuit board is further improved; when the contact plate 3 slides downwards, the upper end of the contact plate is adsorbed to the bottom of the sliding groove 31 through the magnetic block 35, and when the first bump 37 at the lower end of the contact plate scratches the second bump 38, the bottom of the contact plate 3 is driven to swing continuously, so that the probe 34 continuously transversely wipes the golden finger at the plug connector in a sliding manner, the golden finger is wiped, an oxide layer is removed, and good electrical connection between the probe 34 and the plug connector is ensured; compressed air generated when the elastic membrane 4 is extruded is sprayed out through the spray holes 41, and partial metal powder formed by scraping at the plug connector is purged, so that short circuit damage caused by the fact that the metal powder falls on a circuit board is reduced; one side of the magnetic block 35 is fixedly connected with the side wall of the rectangular groove 42, so that the effective adsorption area of the magnetic block 35 and the sliding groove 31 is increased when the contact plate 3 is deformed, and the stable sliding of the contact plate 3 is further ensured; further positioning and squeezing of the bayonet by the bayonet 43 increases the secure connection of the bayonet to the probe 34.

The front, the back, the left, the right, the upper and the lower are all based on figure 1 in the attached drawings of the specification, according to the standard of the observation angle of a person, the side of the device facing an observer is defined as the front, the left side of the observer is defined as the left, and the like.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the scope of the present invention.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.