A positive and negative electrode pin inspection device and an inspection method thereof

Abstract

The application discloses a positive and negative electrode pin inspection device and an inspection method thereof, and belongs to the technical field of connector inspection. The device comprises a rack, wherein an equal-interval driving assembly for driving the equal-interval movement of a to-be-tested product on a carrier is installed on the rack; a plurality of groups of carriers for carrying the to-be-tested product are installed on the equal-interval driving assembly; a detection assembly for detecting the positive and negative electrode pins of the to-be-tested product at a detection station is installed on the rack; a plugging and limiting assembly for limiting and plugging the front end of the to-be-tested product between a feeding station and a genuine product discharging station is installed on the rack; and a distribution assembly for discharging the genuine product to a genuine product pool and discharging the substandard product to a substandard product pool is installed on the rack. Through the above manner, the application can realize the pipeline type continuous detection of the aviation connector pins. Meanwhile, after the detection, the detection results of the detection assembly can be combined to automatically separate the genuine product and the substandard product by cooperating with the distribution assembly, and the detection speed is improved.

Description

Technical Field

[0001] This invention relates to the field of connector inspection technology, specifically to a positive and negative pin inspection device and method. Background Technology

[0002] Aviation connectors are electromechanical components that connect electrical circuits. During factory inspection, the conductivity of the pins of aviation connectors needs to be tested to ensure normal use.

[0003] For example, Chinese utility model patent CN202120315288.7 discloses an aviation connector pin conductivity testing device. This device uses the rotation of a drive gear to mesh with a rack on a drive rod, which in turn drives two movable arms to move in opposite directions. These movable arms then control a clamp, which clamps or releases the connector, thus automatically and effectively securing it.

[0004] However, the above structure has the following problems: it is difficult to achieve continuous, assembly-line testing of aviation connector pins; at the same time, it cannot automatically separate genuine and defective products after testing, and there is still room for improvement in testing speed.

[0005] Based on this, the present invention designs a positive and negative electrode pin testing device and testing method to solve the above problems. Summary of the Invention

[0006] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a positive and negative electrode pin testing device and testing method.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A positive and negative electrode pin testing device includes a frame, on which are mounted equally spaced drive components for moving the product under test on a carrier at equal intervals.

[0009] The equally spaced drive assembly is equipped with several sets of carriers for carrying the product under test.

[0010] The frame is equipped with a testing assembly for testing the positive and negative pins of the product to be tested at the testing station.

[0011] The frame is equipped with a sealing and limiting component for limiting and sealing the front end of the product to be tested between the loading station and the unloading station;

[0012] The frame is equipped with a material sorting assembly for feeding genuine products into the genuine product pool and defective products into the defective product pool.

[0013] Furthermore, the equidistant drive assembly includes a synchronous pulley, a rotating shaft, a first slider, an annular guide rail, a sliding seat, a drive motor, and a synchronous belt. The drive motor is fixedly mounted on the back of the frame, and rotating shafts are rotatably mounted on the left and right ends of the frame. One set of rotating shafts is fixedly connected to the output end of the drive motor, and synchronous pulleys are fixedly connected to the front ends of both sets of rotating shafts. The two sets of synchronous pulleys are connected by a synchronous belt drive. Several sets of sliding seats are fixedly connected at equal intervals on the outer wall of the synchronous belt. A first slider is fixedly connected to the end of each sliding seat near the frame. The first slider is slidably mounted on the annular guide rail, which is fixedly mounted on the front of the frame. A carrier is connected to each set of sliding seats.

[0014] Furthermore, the carrier includes a carrier plate and a connector slot; each set of sliding seats is fixedly connected to a carrier plate, and the front end of the carrier plate is provided with two sets of connector slots for inserting positive and negative pins.

[0015] Furthermore, the detection assembly includes a detection connector, a straight guide rail, a mounting plate, a second slider, a first support base, and a first cylinder; the front end of the frame is fixedly connected to the first support base, the top of the first support base is fixedly connected to the first cylinder, the output end of the first cylinder is fixedly connected to the mounting plate, the end of the mounting plate near the frame is fixedly connected to the second slider, the second slider is slidably connected to the straight guide rail, the straight guide rail is fixedly installed on the frame, and the left and right sides of the end of the mounting plate away from the frame are respectively fixedly connected to the detection connector; the bottom of the mounting plate is also fixedly connected to a positioning rod, and the end of the carrier plate near the detection connector has a positioning hole for inserting the positioning rod, and the bottom of the positioning rod is fixedly connected to a tapered guide rod.

[0016] Furthermore, the blocking and limiting assembly includes an inclined plate, a connecting plate, a first flat limiting plate, a movable plate, a second flat limiting plate, and a rotation reset structure; the bottom of the first flat limiting plate is fixedly connected to multiple sets of connecting plates, the other end of the connecting plates is fixedly connected to the frame, the left end of the first flat limiting plate is fixedly connected to an inclined plate for guiding materials, and the right end of the first flat limiting plate is connected to the movable plate through the rotation reset structure; the second flat limiting plate is located to the right of the movable plate and the lower end of the second flat limiting plate is fixedly connected to a connecting plate, the other end of the connecting plate is fixedly connected to the frame.

[0017] Furthermore, the rotational reset structure includes a torsion spring, a first connecting block, a straight shaft, and a second connecting block; the upper and lower sides of the right end of the first flat limiting plate are respectively fixedly connected to the second connecting block, and the upper and lower sides of the left end of the movable plate are respectively fixedly connected to the first connecting block. The first connecting block and the second connecting block are staggered, and the upper first connecting block and the second connecting block, and the lower first connecting block and the second connecting block are respectively rotatably connected through a straight shaft, and a torsion spring is fixedly connected to each straight shaft; the upper end of the second connecting block is fixedly connected to the straight shaft, the first connecting block is rotatably connected to the straight shaft, the inner end of the torsion spring is fixedly connected to the straight shaft, and the outer end of the torsion spring is fixedly connected to the first connecting block.

[0018] Furthermore, the material distribution assembly includes straight holes, a defective product distribution assembly, a good product distribution assembly, and a second support base; the carrier plate has two sets of straight holes that are respectively connected to the insertion slots; the rear end of the frame is equipped with a second support base, on which are installed a defective product distribution assembly for distributing defective products and a good product distribution assembly for distributing good products, which have the same structure; the two output ends of the defective product distribution assembly pass through the straight holes and contact the defective products in the insertion slots respectively; the two output ends of the good product distribution assembly pass through the straight holes and contact the good products in the insertion slots respectively.

[0019] Furthermore, the defective product sorting assembly includes a second cylinder, a push rod connecting plate, and push rods; the second cylinder is fixedly installed on the top of the second support base, and the output end of the second cylinder is fixedly connected to the push rod connecting plate. Push rods are fixedly connected to both sides of the push rod connecting plate near the frame, and the push rods are movably connected to the frame. The positions of the two sets of push rods correspond to the positions of the two sets of straight holes on the carrier plate at the defective product station. The positions of the two sets of push rods of the positive product sorting assembly correspond to the positions of the two sets of straight holes on the carrier plate at the positive product station.

[0020] The present invention also provides a testing method for the positive and negative electrode pin testing device, comprising the following steps:

[0021] 1. During installation, insert the positive and negative pins into the connector slots respectively;

[0022] 2. The drive motor drives the rotating shaft to rotate, the rotating shaft drives the synchronous pulley to rotate, the synchronous pulley drives another set of synchronous pulleys to rotate through the synchronous belt, the synchronous belt drives the sliding seat to move, the sliding seat drives the first slider to move along the circular guide rail, and the sliding seat drives the carrier to move at equal intervals.

[0023] 3. When the positioning hole of a carrier plate moves to the bottom of the tapered guide rod, the first cylinder is activated to drive the mounting plate to move vertically downward under the limiting action of the straight guide rail and the second slider. The mounting plate drives the two sets of detection connectors to move downward and contact the positive and negative pins for detection. At the same time, the mounting plate drives the positioning rod to be inserted into the positioning hole under the guidance of the tapered guide rod.

[0024] IV. Based on the detection results of the detection components, if the product is genuine, the second cylinder of the genuine product dispensing component is activated to move the push rod connecting plate and the push rod. After passing through the frame, the push rod enters the two sets of straight holes on the carrier plate at the genuine product station and pushes the genuine product out of the insertion slot, thus unloading it into the genuine product pool. If the product is defective, the second cylinder of the defective product dispensing component is activated to move the push rod connecting plate and the push rod. After passing through the frame, the push rod enters the two sets of straight holes on the carrier plate at the defective product station and pushes the defective product out of the insertion slot. The defective product pushes the movable plate to flip, thus unloading the defective product. At the same time, under the restoring force of the torsion spring, the torsion spring can drive the movable plate to reset and reposition itself on the same plane as the first flat limit plate and the second flat limit plate.

[0025] Beneficial effects

[0026] This invention uses several sets of carriers to carry the products to be tested. The products to be tested on the carriers are moved at equal intervals by equal-spacing drive components, so that one product to be tested moves to the testing station where the testing component is located. The testing component tests the positive and negative pins of the product to be tested at the testing station. During the testing, the front end of the product to be tested between the loading station and the unloading station is limited and blocked by the sealing and limiting component to prevent the product to be tested from falling. The equal-spacing drive component, the testing component, and the dispensing component are all connected to an external controller. Then, based on the test results of the testing component, the dispensing component unloads the good products into the good product pool and the defective products into the defective product pool.

[0027] This invention enables continuous, assembly-line testing of aviation connector pins; furthermore, after testing, the results from the testing components can be combined with the material sorting components to automatically separate genuine and defective products, thus improving testing speed. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0029] Figure 1 The main structure of the positive and negative electrode pin testing device of the present invention is three-dimensional. Figure 1 ;

[0030] Figure 2 This is a front view of the structure of a positive and negative electrode pin testing device according to the present invention;

[0031] Figure 3 The main structure of the positive and negative electrode pin testing device of the present invention is three-dimensional. Figure 2 ;

[0032] Figure 4 The main structure of the positive and negative electrode pin testing device of the present invention is three-dimensional. Figure 3 ;

[0033] Figure 5 The main structure of the positive and negative electrode pin testing device of the present invention is three-dimensional. Figure 4 ;

[0034] Figure 6 For along Figure 2 A sectional view along the AA direction;

[0035] Figure 7 For along Figure 2 BB direction sectional view;

[0036] Figure 8 for Figure 6 A magnified view of point C in the middle.

[0037] The labels in the diagram represent:

[0038] 1. Frame; 2. Equal-pitch drive assembly; 21. Synchronous pulley; 22. Rotating shaft; 23. First slider; 24. Circular guide rail; 25. Sliding seat; 26. Drive motor; 27. Synchronous belt; 3. Sealing and limiting assembly; 31. Inclined plate; 32. Connecting plate; 33. First flat limiting plate; 34. Movable plate; 35. Second flat limiting plate; 36. Torsion spring; 37. First connecting block; 38. Straight shaft; 39. Second connecting block; 4. Detection assembly; 41. Detection... 42. Test connector; 43. Straight guide rail; 44. Mounting plate; 45. Positioning rod; 46. Positioning hole; 47. Second slider; 48. First support base; 49. First cylinder; 50. Conical guide rod; 61. Carrier; 52. Carrier plate; 63. Insertion slot; 64. Material distribution assembly; 61. Straight hole; 62. Defective product distribution assembly; 621. Second cylinder; 622. Push rod connecting plate; 623. Push rod; 63. Good product distribution assembly; 64. Second support base. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0040] The present invention will be further described below with reference to embodiments.

[0041] In some embodiments, please refer to the appendix to the instruction manual. Figure 1-8 A positive and negative electrode pin testing device, comprising a frame 1;

[0042] The frame 1 is equipped with an equidistant drive assembly 2 for moving the product under test on the carrier 5 at equal intervals;

[0043] Several sets of carriers 5 for carrying the product under test are installed on the equally spaced drive assembly 2;

[0044] The frame 1 is equipped with a testing component 4 for testing the positive and negative pins of the product to be tested at the testing station;

[0045] The frame 1 is equipped with a sealing and limiting component 3 for limiting and sealing the front end of the product to be tested between the loading station and the unloading station;

[0046] A material sorting assembly 6 is installed on the frame 1 for discharging genuine products into the genuine product pool and defective products into the defective product pool;

[0047] This invention uses several sets of carriers 5 to carry the products to be tested. The equal-spacing drive components 2 drive the products to be tested on the carriers 5 to move one end of the distance at equal intervals, so that one product to be tested moves to the detection station where the detection component 4 is located. The detection component 4 detects the positive and negative pins of the product to be tested at the detection station. During the detection, the sealing and limiting component 3 limits and blocks the front end of the product to be tested between the loading station and the unloading station to prevent the product to be tested from falling. The equal-spacing drive components 2, the detection component 4, and the sorting component 6 are all connected to an external controller. Then, based on the detection results of the detection component 4, the sorting component 6 unloads the good products into the good product pool and the defective products into the defective product pool.

[0048] This invention enables continuous, assembly-line testing of aviation connector pins; furthermore, after testing, the results from the testing component 4 can be combined with the material sorting component 6 to automatically separate genuine and defective products, thus improving the testing speed.

[0049] In some embodiments, preferably, the equidistant drive assembly 2 includes a synchronous pulley 21, a rotating shaft 22, a first slider 23, an annular guide rail 24, a sliding seat 25, a drive motor 26, and a synchronous belt 27; the drive motor 26 is fixedly mounted on the back of the frame 1, and rotating shafts 22 are rotatably mounted on the left and right ends of the frame 1, one set of rotating shafts 22 is fixedly connected to the output end of the drive motor 26, and the front ends of both sets of rotating shafts 22 are fixedly connected to synchronous pulleys 21, and the two sets of synchronous pulleys 21 are connected by a synchronous belt 27; several sets of sliding seats 25 are fixedly connected at equal intervals on the outer wall of the synchronous belt 27, and a first slider 23 is fixedly connected to the end of each sliding seat 25 near the frame 1; the first slider 23 is slidably mounted on the annular guide rail 24, and the annular guide rail 24 is fixedly mounted on the front of the frame 1; a carrier 5 is connected to each set of sliding seats 25;

[0050] The drive motor 26 drives the rotating shaft 22 to rotate, the rotating shaft 22 drives the synchronous pulley 21 to rotate, the synchronous pulley 21 drives another set of synchronous pulleys 21 to rotate via the synchronous belt 27, the synchronous belt 27 drives the sliding seat 25 to move, the sliding seat 25 drives the first slider 23 to move along the annular guide rail 24, and the sliding seat 25 drives the carrier 5 to move at equal intervals.

[0051] Preferably, the carrier 5 includes a carrier plate 51 and a plug slot 52; each set of sliding seats 25 is fixedly connected to a carrier plate 51, and the front end of the carrier plate 51 is provided with two sets of plug slots 52 for plugging in positive and negative pins.

[0052] During installation, insert the positive and negative pins into the connector slot 52 respectively;

[0053] In some embodiments, the detection component 4 includes a detection connector 41, a straight guide rail 42, a mounting plate 43, a second slider 46, a first support base 47, and a first cylinder 48; the front end of the frame 1 is fixedly connected to the first support base 47, the top of the first support base 47 is fixedly connected to the first cylinder 48, the output end of the first cylinder 48 is fixedly connected to the mounting plate 43, the end of the mounting plate 43 near the frame 1 is fixedly connected to the second slider 46, the second slider 46 is slidably connected to the straight guide rail 42, the straight guide rail 42 is fixedly installed on the frame 1, and the left and right sides of the end of the mounting plate 43 away from the frame 1 are respectively fixedly connected to the detection connector 41;

[0054] Preferably, a positioning rod 44 is fixedly connected to the bottom of the mounting plate 43, and a positioning hole 45 is opened at the end of the carrier plate 51 near the detection connector 41 to cooperate with the positioning rod 44 for insertion. A tapered guide rod 49 is fixedly connected to the bottom of the positioning rod 44.

[0055] When the positioning socket 45 of a carrier plate 51 moves to below the conical guide rod 49, the first cylinder 48 is activated to drive the mounting plate 43 to move vertically downward under the limiting action of the straight guide rail 42 and the second slider 46. The mounting plate 43 drives the two sets of detection connectors 41 to move downward and contact the positive and negative pins for detection. The detection result is transmitted to the external controller. At the same time, the mounting plate 43 drives the positioning rod 44 to be inserted into the positioning socket 45 under the guidance of the conical guide rod 49 to achieve position calibration and ensure the accuracy of the downward movement of the two sets of detection connectors 41 and their contact with the positive and negative pins.

[0056] The blocking and limiting assembly 3 includes an inclined plate 31, a connecting plate 32, a first flat limiting plate 33, a movable plate 34, a second flat limiting plate 35, and a rotation reset structure. Multiple sets of connecting plates 32 are fixedly connected to the bottom of the first flat limiting plate 33, and the other end of the connecting plate 32 is fixedly connected to the frame 1. An inclined plate 31 for guiding materials is fixedly connected to the left end of the first flat limiting plate 33, and the right end of the first flat limiting plate 33 is connected to the movable plate 34 via the rotation reset structure. The second flat limiting plate 35 is located to the right of the movable plate 34, and a connecting plate 32 is fixedly connected to the lower end of the second flat limiting plate 35. The other end of the connecting plate 32 is fixedly connected to the frame 1.

[0057] The rotational reset structure includes a torsion spring 36, a first connecting block 37, a straight shaft 38, and a second connecting block 39. The upper and lower sides of the right end of the first flat limiting plate 33 are respectively fixedly connected to the second connecting block 39, and the upper and lower sides of the left end of the movable plate 34 are respectively fixedly connected to the first connecting block 37. The first connecting block 37 and the second connecting block 39 are staggered, and the upper first connecting block 37 and the second connecting block 39, and the lower first connecting block 37 and the second connecting block 39 are respectively rotatably connected through the straight shaft 38, and the torsion spring 36 is fixedly connected to the straight shaft 38.

[0058] Preferably, the upper end of the second connecting block 39 is fixedly connected to a straight shaft 38, the first connecting block 37 is rotatably connected to the straight shaft 38, the inner end of the torsion spring 36 is fixedly connected to the straight shaft 38, and the outer end of the torsion spring 36 is fixedly connected to the first connecting block 37.

[0059] The inclined plate 31 guides the material, and the first flat limiting plate 33, the movable plate 34, and the second flat limiting plate 35 contact the front end of the product to be tested to seal it and prevent it from falling. When a defective product needs to be unloaded, the movable plate 34 can be flipped to unload the defective product. At the same time, under the restoring force of the torsion spring 36, the torsion spring 36 can drive the movable plate 34 to reset and be on the same plane as the first flat limiting plate 33 and the second flat limiting plate 35. The second flat limiting plate 35 is used to seal the gap between the defective product unloading station and the good product unloading station.

[0060] The material sorting assembly 6 includes straight holes 61, a defective product sorting assembly 62, a good product sorting assembly 63, and a second support base 64. Two sets of straight holes 61, each communicating with a insertion slot 52, are provided on the carrier plate 51. A second support base 64 is installed at the rear end of the frame 1. The second support base 64 is equipped with a defective product sorting assembly 62 and a good product sorting assembly 63, both with identical structures. During unloading, the two output ends of the defective product sorting assembly 62 pass through the straight holes 61 and contact the defective products in the insertion slot 52, thus pushing out the good products. Similarly, during unloading, the two output ends of the good product sorting assembly 63 pass through the straight holes 61 and contact the good products in the insertion slot 52, thus pushing out the defective products.

[0061] Preferably, the defective product sorting assembly 62 includes a second cylinder 621, a push rod connecting plate 622, and a push rod 623; the second cylinder 621 is fixedly installed on the top of the second support base 64, the output end of the second cylinder 621 is fixedly connected to the push rod connecting plate 622, and push rods 623 are fixedly connected to both sides of the push rod connecting plate 622 near the frame 1, the push rods 623 are movably connected to the frame 1, and the positions of the two sets of push rods 623 correspond to the positions of the two sets of straight holes 61 of the carrier plate 51 at the defective product station.

[0062] Similarly, the positions of the two sets of push rods 623 of the genuine material distribution component 63 correspond to the positions of the two sets of straight holes 61 of the carrier plate 51 at the genuine workstation.

[0063] In the initial state, push rod 623 does not contact carrier plate 51 to avoid affecting the movement of carrier plate 51. Based on the detection results of detection component 4, if it is a genuine product, the second cylinder 621 of genuine product dispensing component 63 is activated to drive push rod connecting plate 622 and push rod 623 to move. Push rod 623 passes through frame 1 and enters the two sets of straight holes 61 of carrier plate 51 at genuine product station, pushing the product out of insertion slot 52, thus realizing the unloading to the genuine product pool. If it is a defective product, the second cylinder 621 of defective product dispensing component 62 is activated to drive push rod connecting plate 622 and push rod 623 to move. Push rod 623 passes through frame 1 and enters the two sets of straight holes 61 of carrier plate 51 at defective product station, pushing the product out of insertion slot 52, thus realizing the unloading to the defective product pool.

[0064] In some embodiments, the testing method for the positive and negative electrode pin testing device includes the following steps:

[0065] 1. During installation, insert the positive and negative pins into the connector slot 52 respectively;

[0066] 2. The drive motor 26 drives the rotating shaft 22 to rotate, the rotating shaft 22 drives the synchronous pulley 21 to rotate, the synchronous pulley 21 drives another set of synchronous pulleys 21 to rotate via the synchronous belt 27, the synchronous belt 27 drives the sliding seat 25 to move, the sliding seat 25 drives the first slider 23 to move along the annular guide rail 24, and the sliding seat 25 drives the carrier 5 to move at equal intervals.

[0067] 3. When the positioning insertion hole 45 of a carrier plate 51 moves to below the conical guide rod 49, the first cylinder 48 is activated to drive the mounting plate 43 to move vertically downward under the limiting action of the straight guide rail 42 and the second slider 46. The mounting plate 43 drives the two sets of detection connectors 41 to move downward and contact the positive and negative pins for detection. At the same time, the mounting plate 43 drives the positioning insertion rod 44 to be inserted into the positioning insertion hole 45 under the guidance of the conical guide rod 49.

[0068] IV. Based on the detection results of the detection component 4, if the product is genuine, the second cylinder 621 of the genuine product dispensing component 63 is activated to move the push rod connecting plate 622 and the push rod 623. The push rod 623 passes through the frame 1 and enters the two sets of straight holes 61 of the carrier plate 51 at the genuine product station, pushing the genuine product out of the insertion slot 52 and thus dispensing it into the genuine product pool. If the product is defective, the second cylinder 621 of the defective product dispensing component 62 is activated to move the push rod connecting plate 622 and the push rod 623. The push rod 623 passes through the frame 1 and enters the two sets of straight holes 61 of the carrier plate 51 at the defective product station, pushing the defective product out of the insertion slot 52. The defective product pushes the movable plate 34 to flip, thus dispensing the defective product. At the same time, under the restoring force of the torsion spring 36, the torsion spring 36 can drive the movable plate 34 to reset and reposition itself on the same plane as the first flat limit plate 33 and the second flat limit plate 35.

[0069] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A positive and negative electrode pin inspection device, comprising a rack (1), characterized in that: an equal-interval driving assembly (2) for moving the to-be-tested products on the carriers (5) at equal intervals is installed on the rack (1); a plurality of groups of carriers (5) for carrying the to-be-tested products are installed on the equal-interval driving assembly (2); a detection assembly (4) for detecting the positive and negative electrode pins of the to-be-tested products at a detection station is installed on the rack (1); a blocking and limiting assembly (3) for limiting and blocking the front end of the to-be-tested products between a feeding station and a positive product discharging station is installed on the rack (1); a distributing assembly (6) for discharging the positive products to a positive product pool and discharging the substandard products to a substandard product pool is installed on the rack (1); the blocking and limiting assembly (3) comprises an inclined plate (31), a connecting plate (32), a first flat limiting plate (33), a movable plate (34), a second flat limiting plate (35), and a rotating reset structure; a plurality of groups of connecting plates (32) are fixedly connected to the bottom of the first flat limiting plate (33), the other ends of the connecting plates (32) are fixedly connected with the rack (1), the left end of the first flat limiting plate (33) is fixedly connected with the inclined plate (31) for guiding the products, and the right end of the first flat limiting plate (33) is connected with the movable plate (34) through the rotating reset structure; the second flat limiting plate (35) is located on the right side of the movable plate (34), and the lower end of the second flat limiting plate (35) is fixedly connected with the connecting plate (32), and the other end of the connecting plate (32) is fixedly connected with the rack (1); the rotating reset structure comprises a torsion spring (36), a first connecting block (37), a straight shaft (38), and a second connecting block (39); the upper and lower sides of the right end of the first flat limiting plate (33) are fixedly connected with the second connecting blocks (39), respectively, the left end of the movable plate (34) is fixedly connected with the first connecting blocks (37), respectively, the first connecting blocks (37) and the second connecting blocks (39) are arranged in a staggered manner, the upper first connecting block (37) and the upper second connecting block (39) and the lower first connecting block (37) and the lower second connecting block (39) are rotatably connected through the straight shaft (38), respectively, and the straight shaft (38) is fixedly connected with the torsion spring (36); the upper end of the second connecting block (39) is fixedly connected with the straight shaft (38), the first connecting block (37) is rotatably connected with the straight shaft (38), the inner end of the torsion spring (36) is fixedly connected with the straight shaft (38), and the outer end of the torsion spring (36) is fixedly connected with the first connecting block (37).

2. The positive and negative electrode contact pin inspection device according to claim 1, characterized by The equidistance driving assembly (2) comprises a synchronous wheel (21), a rotating shaft (22), a first sliding block (23), an annular guide rail (24), a sliding seat (25), a driving motor (26) and a synchronous belt (27); the driving motor (26) is fixedly installed on the back of the rack (1), the left and right ends of the rack (1) are rotatably installed with the rotating shafts (22), one group of the rotating shafts (22) are fixedly connected with the output end of the driving motor (26), the front ends of the two groups of the rotating shafts (22) are fixedly connected with the synchronous wheels (21), the two groups of the synchronous wheels (21) are drivingly connected through the synchronous belt (27), a plurality of groups of the sliding seats (25) are fixedly connected on the outer wall of the synchronous belt (27) at equal intervals, the sliding seats (25) are fixedly connected with the first sliding blocks (23) at the ends close to the rack (1), the first sliding blocks (23) are slidingly installed on the annular guide rail (24), and the annular guide rail (24) is fixedly installed on the front of the rack (1); the groups of the sliding seats (25) are all connected with the carriers (5).

3. The positive and negative electrode contact pin inspection apparatus according to claim 2, characterized by The carrier (5) comprises a carrier plate (51) and a plug-in slot (52); the groups of the sliding seats (25) are all fixedly connected with the carrier plates (51), and the front ends of the carrier plates (51) are provided with two groups of the plug-in slots (52) for plugging the positive and negative polar pins.

4. The positive and negative electrode contact pin inspection apparatus according to claim 3, characterized by The detection assembly (4) comprises a detection plug (41), a straight guide rail (42), a mounting straight plate (43), a second sliding block (46), a first supporting seat (47) and a first cylinder (48); the front end of the rack (1) is fixedly connected with the first supporting seat (47), the top of the first supporting seat (47) is fixedly connected with the first cylinder (48), the output end of the first cylinder (48) is fixedly connected with the mounting straight plate (43), the end of the mounting straight plate (43) close to the rack (1) is fixedly connected with the second sliding block (46), the second sliding block (46) is slidingly connected with the straight guide rail (42), the straight guide rail (42) is fixedly installed on the rack (1), and the ends, away from the rack (1), of the mounting straight plate (43) are fixedly connected with the detection plugs (41) on the left and right sides; the bottom of the mounting straight plate (43) is further fixedly connected with a positioning plug rod (44), the end of the carrier plate (51) close to the detection plug (41) is provided with a positioning plug hole (45) matched with the positioning plug rod (44) for insertion, and the bottom of the positioning plug rod (44) is fixedly connected with a tapered guide rod (49).

5. The positive and negative electrode contact pin inspection apparatus according to claim 4, characterized by The material distributing assembly (6) comprises straight holes (61), a substandard product distributing assembly (62), a standard product distributing assembly (63) and a second support base (64); two groups of straight holes (61) are formed in the carrier plate (51) and are communicated with the plug-in slots (52) respectively, the second support base (64) is installed at the rear end of the rack (1), and the substandard product distributing assembly (62) and the standard product distributing assembly (63) which are used for distributing substandard products and standard products respectively are installed on the second support base (64) and are of the same structure; the two output ends of the substandard product distributing assembly (62) pass through the straight holes (61) and are in contact with the substandard products in the plug-in slots (52) respectively; the two output ends of the standard product distributing assembly (63) pass through the straight holes (61) and are in contact with the standard products in the plug-in slots (52) respectively.

6. The positive and negative electrode contact pin inspection apparatus according to claim 5, wherein The substandard product distributing assembly (62) comprises a second cylinder (621), a push rod connecting plate (622) and push rods (623); the second cylinder (621) is fixedly installed at the top of the second support base (64), the output end of the second cylinder (621) is fixedly connected with the push rod connecting plate (622), the push rod connecting plate (622) is fixedly connected with the push rods (623) on the two sides of the end close to the rack (1), the push rods (623) are movably connected with the rack (1), and the positions of the two groups of push rods (623) correspond to the positions of the two groups of straight holes (61) of the carrier plate (51) at the substandard product station in front and back; the positions of the two groups of push rods (623) of the standard product distributing assembly (63) correspond to the positions of the two groups of straight holes (61) of the carrier plate (51) at the standard product station in front and back.

7. A method of inspecting the positive and negative electrode pins according to claim 6, characterized by, The method comprises the following steps: I. During installation, the positive and negative polar pins are respectively plugged into the plug-in slots (52); II. The driving motor (26) drives the rotating shaft (22) to rotate, the rotating shaft (22) drives the synchronous wheel (21) to rotate, the synchronous wheel (21) drives the other synchronous wheel (21) to rotate through the synchronous belt (27), the synchronous belt (27) drives the sliding seat (25) to move, the sliding seat (25) drives the first sliding block (23) to move along the annular guide rail (24), and the sliding seat (25) drives the carrier (5) to move at equal intervals; III. When the positioning insertion hole (45) of one carrier plate (51) moves below the conical guide rod (49), the first cylinder (48) is started to drive the installation straight plate (43) to move vertically downward under the limiting action of the straight guide rail (42) and the second sliding block (46), the installation straight plate (43) drives the two groups of detection plug-in heads (41) to move downward and contact the positive and negative polar pins for detection, and meanwhile, the installation straight plate (43) drives the positioning insertion rod (44) to be inserted into the positioning insertion hole (45) under the guiding action of the conical guide rod (49). IV. The detection results of the detection assembly (4) are combined. If it is a genuine product, the second air cylinder (621) of the genuine product distribution assembly (63) is controlled to drive the push rod connecting plate (622) and the push rod (623) to move. The push rod (623) passes through the rack (1), enters the two groups of straight holes (61) of the carrier plate (51) at the genuine product station, and pushes the genuine product out of the plug-in slot (52), so as to realize the discharging to the genuine product pool. If it is a defective product, the second air cylinder (621) of the defective product distribution assembly (62) is controlled to drive the push rod connecting plate (622) and the push rod (623) to move. The push rod (623) passes through the rack (1), enters the two groups of straight holes (61) of the carrier plate (51) at the defective product station, and pushes the defective product out of the plug-in slot (52). The defective product pushes the movable plate (34) to overturn, so as to realize the discharging of the defective product. Under the restoring force of the torsional spring (36), the torsional spring (36) can drive the movable plate (34) to reset and be in the same plane with the first flat limiting plate (33) and the second flat limiting plate (35).

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