A fully automatic testing device for capacitor aging test

Abstract

The present invention relates to the technical field of capacitor aging testing, and discloses a fully automatic testing device for capacitor aging testing, including a testing table, a conveyor, a first alignment mechanism, a second alignment mechanism and a material transfer mechanism; a capacitor testing circuit board is embedded on one side of the top of the testing table, a capacitor waveform monitoring display is arranged beside the testing table, and the capacitor waveform monitoring display is electrically connected to the capacitor testing circuit board through a wire; the conveyor is arranged on the other side of the top of the testing table, and the conveyor is used for conveying capacitors; the first alignment mechanism and the second alignment mechanism are sequentially arranged upstream of the conveyor and along the conveying direction of the conveyor; the first alignment mechanism is used to adjust the positive and negative pins of each capacitor on the conveyor to the same horizontal plane; the second alignment mechanism is used to adjust the azimuth of the positive pins or the azimuth of the negative pins of each capacitor on the conveyor to the same side of the capacitor; the improvement of the testing efficiency and the improvement of the degree of testing automation are realized.

Description

Technical Field

[0001] The present invention relates to the technical field of capacitor aging testing, and particularly to a fully automatic testing device for capacitor aging testing. Background Art

[0002] Since the two pins of a capacitor have positive and negative polarities, and incorrect connection of the positive and negative poles of the capacitor on the aging testing machine will cause testing failures. Therefore, when performing batch capacitor aging testing, it is necessary to make the positive poles of all capacitors on the same side and the negative poles of all capacitors on the other side.

[0003] In the prior art, the capacitors are usually accurately installed on the capacitor test circuit board by means of manual identification and installation. This installation method involves operations such as the identification of the positive and negative pins of the capacitor and the corresponding insertion of the positive and negative pins of the capacitor on the capacitor test circuit board. Since batch testing is required for capacitor aging testing to obtain effective test data, this manual identification and installation method brings problems of low efficiency and low automation in batch capacitor aging testing. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the present invention provides a fully automatic testing device for capacitor aging testing, which can effectively solve the problems raised in the background art.

[0005] To achieve the above object, the present invention provides the following technical solution: A fully automatic testing device for capacitor aging testing includes a test bench, a conveyor, a first alignment mechanism, a second alignment mechanism, and a material transfer mechanism; a capacitor test circuit board is embedded on one side of the top of the test bench, and a capacitor waveform monitoring display is arranged beside the test bench. The capacitor waveform monitoring display is electrically connected to the capacitor test circuit board through a wire; the conveyor is arranged on the other side of the top of the test bench; the first alignment mechanism and the second alignment mechanism are sequentially arranged upstream of the conveyor along the conveying direction of the conveyor, and the material transfer mechanism is arranged downstream of the conveyor; the material transfer mechanism is used to move the capacitor onto the capacitor test circuit board; the conveyor is used to convey the capacitor and make the capacitor move to the first alignment mechanism, the second alignment mechanism, and the material transfer mechanism in sequence; the first alignment mechanism is used to adjust the positive and negative pins of the capacitor to the same horizontal plane, and the second alignment mechanism is used to adjust the positive pin of the capacitor to be close to the upstream or downstream of the conveyor.

[0006] The second alignment mechanism includes a first moving plate and a second moving plate respectively arranged on both sides of the frame. A plurality of turntables are embedded in the second moving plate. The turntables are rotationally matched with the second moving plate. One end of the turntable facing the first moving plate is eccentrically provided with a conduit, which is matched with the positive pin of the capacitor. A plurality of pneumatic selection devices are installed on the second moving plate, and the plurality of pneumatic selection devices correspond to the plurality of turntables one by one. When the positive pin of the capacitor is inserted in place in the conduit, the corresponding pneumatic selection device drives the turntable to rotate 180 degrees;

[0007] A guide air groove is provided on the outer circumferential surface of the turntable. An air cavity and an air passage are arranged inside the turntable. The air cavity communicates with the inner cavity of the conduit, and the air passage communicates with the air cavity and the guide air groove; The pneumatic selection device includes an air supply pipe, a sealing ring, a cylinder body, a plug rod and a linkage mechanism; The air supply pipe is used to send high-pressure gas into the guide air groove. The sealing ring is embedded on the inner circumferential surface of the conduit. The inner diameter of the sealing ring is smaller than the diameter of the positive pin of the capacitor. The cylinder body is fixed at the other end of the turntable. The inner cavity of the cylinder body communicates with the air passage. One end of the plug rod is arranged in the inner cavity of the cylinder body, and the other end is located outside the cylinder body and is connected to the linkage mechanism. The linkage mechanism is drivingly connected to the cylinder body;

[0008] The linkage mechanism includes a linkage rod, a linkage shaft and a linkage cylinder. One end of the linkage rod is rotatably sleeved on the outer surface of the plug rod. The other end of the linkage rod is connected to and fixes the linkage shaft. The linkage cylinder is sleeved on the outer surface of the linkage shaft. A spiral matching mechanism is formed between the linkage shaft and the linkage cylinder; The linkage cylinder and the cylinder body are connected together through gear transmission; The linkage cylinder is rotatably installed on the second moving plate through a support.

[0009] Preferably, the conveyor includes a frame and a conveyor belt arranged inside the frame. A plurality of carriers are fixedly installed at equal intervals along the circumferential conveying direction on the surface of the conveyor belt. A groove matching the capacitor housing is provided on the carrier; The first alignment mechanism includes a first baffle and an adjustment frame respectively fixed on both sides of the frame. A second baffle is arranged between the first baffle and the adjustment frame. The second baffle is fixedly connected to the first baffle through a U-shaped connecting plate. A gap is left between the second baffle and the frame. A guide groove and an adjustment groove are provided on the adjustment frame. The adjustment groove is an open groove, and the narrow opening of the adjustment groove communicates with the guide groove.

[0010] Preferably, a second ejector rod is fixed at one end of each turntable facing the first moving plate. A plurality of first ejector rods are rotatably installed on the first moving plate. The plurality of first ejector rods correspond to the plurality of second ejector rods one by one. The first ejector rod and the second ejector rod are respectively used to press against the two axial ends of the capacitor housing.

[0011] Preferably, an elastic member is arranged between the linkage cylinder and the support, and a braking member is arranged between the turntable and the second moving plate; After the turntable is driven to rotate 180 degrees by the pneumatic selection device, the elastic member drives the turntable to rotate and reset; After the turntable is reset, the braking member is used to prevent the turntable from continuing to rotate along the reset rotation direction.

[0012] Preferably, the material transfer mechanism includes a three-axis robotic arm and a capacitive ejecting device. A capacitive fixture is installed at the output end of the three-axis robotic arm. The capacitive ejecting device is used to eject the capacitors on the conveyor into the capacitive fixture.

[0013] Compared with the prior art, the present invention provides a fully automatic testing device for capacitor aging testing, which has the following beneficial effects:

[0014] 1. When performing the aging test of capacitors, it can achieve automatic and continuous conveyance of capacitors, which is suitable for batch aging detection of capacitors and improves the capacitor installation efficiency during batch aging testing of capacitors.

[0015] 2. When continuously placing multiple capacitors on the conveyor, it is not necessary to pre-adjust the positive or negative pin of each capacitor to the same side, which improves the convenience of capacitor placement.

[0016] 3. When the conveyor continuously conveys multiple capacitors, the positive and negative pins of the capacitors can be adjusted to the same horizontal plane by passing the positive and negative pins of multiple capacitors through the adjustment groove and the guide groove in sequence; after multiple capacitors move to the second alignment mechanism, by moving multiple conduits close to the corresponding multiple capacitors, the conduits are sleeved on the positive pins opposite to them (when the positive pins are not facing the conduits, the conduits cannot be sleeved on the positive pins by moving the conduits), through the pneumatic selection device, the capacitors with the positive pins inside the conduits are rotated 180 degrees, and the capacitors with the positive pins not inside the conduits do not rotate, so as to achieve the adjustment of the positive pins or negative pins of multiple capacitors to the same side, so that multiple capacitors can be quickly and accurately inserted into the capacitor test circuit board at the same time, improving the test efficiency and the degree of test automation. Description of the Drawings

[0017] Figure 1 Schematic diagram of the cooperation between the present invention and the capacitor;

[0018] Figure 2 Schematic diagram of the structure of the conveyor and the first alignment mechanism;

[0019] Figure 3 Schematic diagram of the structure of the second alignment mechanism;

[0020] Figure 4 Schematic diagram of the cooperation between the second moving plate and the turntable;

[0021] Figure 5 Schematic diagram of the structure of the linkage mechanism;

[0022] Figure 6 Schematic diagram of the internal structure of the turntable.

[0023] Among them: 1. test bench; 2. conveyor; 3. first straightening mechanism; 4. second straightening mechanism; 5. air delivery pipe; 6. material transfer mechanism; 7. capacitor test circuit board; 8. capacitor waveform monitoring display; 21. rack; 22. conveyor belt; 23. carrier; 231. groove; 31. baffle plate 1; 32. adjustment frame; 33. baffle plate 2; 321. guide groove; 322. adjustment groove; 34. U-shaped connecting plate; 41. moving plate 1; 411. ejector rod 1; 4 12. Ejector rod 2; 41. Moving plate 1; 42. Moving plate 2; 43. Turntable; 431. Air guide groove; 432. Air cavity; 433. Airway; 44. Conduit; 441. Sealing ring; 45. Cylinder; 451. Plug rod; 46. Linkage rod; 47. Linkage shaft; 48. Linkage cylinder; 481. Support; 482. Elastic member; 483. Braking member; 49. Driving device; 61. Three-axis robotic arm; 62. Capacitor ejection device; 63. Capacitor fixture. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] See also Figure 1 , a fully automatic test equipment for capacitor aging test, comprising a test bench 1, a conveyor 2, a first straightening mechanism 3, a second straightening mechanism 4 and a material moving mechanism 6;

[0026] A capacitor test circuit board 7 is embedded on one side of the top of the test bench 1, and a capacitor waveform monitoring display 8 is arranged on the side of the test bench 1, and the capacitor waveform monitoring display 8 is electrically connected to the capacitor test circuit board 7 through a wire; the conveyor 2 is arranged on the other side of the top of the test bench 1; the first straightening mechanism 3 and the second straightening mechanism 4 are arranged in sequence upstream of the conveyor 2 and along the conveying direction of the conveyor 2, and the material moving mechanism 6 is arranged downstream of the conveyor 2; the material moving mechanism 6 is used to move the capacitor to the capacitor test circuit board 7;

[0027] The conveyor 2 is used to convey capacitors and move the capacitors to the first straightening mechanism 3, the second straightening mechanism 4 and the material moving mechanism 6 in sequence; the first straightening mechanism 3 is used to adjust the positive and negative pins of the capacitor to the same horizontal plane, and the second straightening mechanism 4 is used to adjust the positive pin of the capacitor to the upstream or downstream close to the conveyor 2.

[0028] As a further explanation of the above technical solution, Figure 2As shown in the figure, the conveyor 2 includes a frame 21 and a conveyor belt 22 disposed inside the frame 21. The frame 21 is fixed on the upper surface of the test bench 1. The frame 21 has a power unit for driving the conveyor belt 22 to rotate and move on the frame 21. The power unit can be a motor, a hydraulic motor, etc. A plurality of carriers 23 are fixedly installed on the surface of the conveyor belt 22 at uniform intervals along the rotary conveying direction. A groove 231 matching the capacitor housing is provided on the carrier 23, and the length of the groove 231 is slightly less than the length of the capacitor housing. When the conveyor belt 22 rotates and moves, the carriers 23 move in a cycle. When the groove 231 faces upward, the carrier 23 carries the capacitor and moves the capacitor. When the groove 231 faces downward, the carrier 23 is in a vacant state.

[0029] The first alignment mechanism 3 includes a first baffle 31 and an adjustment frame 32 respectively fixed on both sides of the frame 21. A second baffle 33 is disposed between the first baffle 31 and the adjustment frame 32. The second baffle 33 is fixedly connected to the first baffle 31 through a U-shaped connecting plate 34. The distance between the opposite surfaces of the first baffle 31 and the second baffle 33 is slightly greater than the axial length of the capacitor housing. A gap is left between the second baffle 33 and the frame 21, and the second baffle 33 is located above the capacitor pins to facilitate the movement of the capacitor within the first alignment mechanism 3. A guide groove 321 and an adjustment groove 322 are formed on the adjustment frame 32. The adjustment groove 322 is an open groove, and the narrow opening of the adjustment groove 322 communicates with the guide groove 321. The capacitor pins enter the adjustment groove 322 from the wide opening of the adjustment groove 322. As the capacitor moves within the first alignment mechanism 3, the capacitor pins move from the wide opening to the narrow opening of the adjustment groove 322. During this process, by contacting the upper and lower groove walls of the adjustment groove 322 through the pins, the motor rotates within the groove 231 until both the positive and negative pins of the motor move into the guide groove 321. Within the guide groove 321, the positive and negative pins of the capacitor remain on the same horizontal plane.

[0030] As a further description of the above technical solution, such as Figure 3As shown in the figure, the second alignment mechanism 4 includes a first moving plate 41 and a second moving plate 42 respectively arranged on both sides of the frame 21. A driving device 49 is installed between the first moving plate 41 and the second moving plate 42. The driving device 49 is arranged below the conveyor 2 and installed on the upper surface of the test bench 1. The driving device 49 is used to drive the first moving plate 41 and the second moving plate 42 to approach or move away from each other. In this embodiment, the driving device 49 includes a double-output shaft motor, two lead screws with opposite rotation directions, and a guide rod. Among them, the housing of the double-output shaft motor and the guide rod are both fixed to the upper part of the test bench 1. Two output ends of the double-output shaft motor are respectively fixedly connected to a lead screw. The two lead screws respectively penetrate through the first moving plate 41 and the second moving plate 42, and a threaded fit is formed between the lead screw and the first moving plate 41, and between the lead screw and the second moving plate 42. The first moving plate 41 and the second moving plate 42 are both slidably sleeved on the outer surface of the guide rod. By driving the two lead screws to rotate by the double-output shaft motor, the first moving plate 41 and the second moving plate 42 slide on the guide rod and approach or move away from each other.

[0031] Further, as Figure 4 shown, a plurality of turntables 43 are embedded in the second moving plate 42. The turntables 43 are rotationally matched with the second moving plate 42. One end of the turntable 43 facing the first moving plate 41 is eccentrically provided with a catheter 44. The catheter 44 is matched with the positive electrode pin of the capacitor. Specifically, since the finished capacitor can distinguish the positive and negative poles through two pins with different lengths, that is, the length of the positive electrode pin is greater than that of the negative electrode pin. When the positive electrode pin is facing the catheter 44, the catheter 44 can be moved to sleeved on the positive electrode pin and cooperate with the positive electrode pin. When the negative electrode pin is facing the catheter 44, the catheter 44 moves the same distance and cannot be sleeved on the negative electrode pin or is sleeved on the negative electrode pin but does not form a cooperation with the negative electrode pin. As Figure 6 shown, the inner cavity of the catheter 44 is composed of a cylindrical inner cavity and a frustum-shaped inner cavity. The cylindrical inner cavity is located on the side close to the turntable 43, and the cylindrical inner cavity communicates with the narrow opening of the frustum-shaped inner cavity. The wide opening of the frustum-shaped inner cavity faces the conveyor 2. The capacitor pin enters the catheter 44 through the wide opening of the frustum-shaped inner cavity. It should be noted that although Figure 6 shown, the length of the cylindrical inner cavity is less than that of the frustum-shaped inner cavity, but in fact, the length relationship between the cylindrical inner cavity and the frustum-shaped inner cavity may not be in accordance with Figure 6 shown, that is, the cylindrical inner cavity and the frustum-shaped inner cavity can have the same length, and the length of the cylindrical inner cavity can also be greater than that of the frustum-shaped inner cavity. The choice of the length relationship between the cylindrical inner cavity and the frustum-shaped inner cavity can be based on the material of the capacitor pin. That is, when the material of the capacitor pin is relatively hard and not easily bent and deformed, the length of the cylindrical inner cavity can be less than or equal to the length of the frustum-shaped inner cavity. When the material of the capacitor pin is relatively soft, the length of the cylindrical inner cavity should be greater than the length of the frustum-shaped inner cavity, so that the length of the capacitor pin located in the cylindrical inner cavity is longer, so that the capacitor pin is not easily or will not be bent and deformed when the second alignment mechanism 4 works.

[0032] A plurality of pneumatic selection devices are installed on the movable plate 42, and the plurality of pneumatic selection devices correspond one-to-one to the plurality of turntables 43. When the positive pin of the capacitor is inserted into place in the conduit 44, the corresponding pneumatic selection device drives the turntable 43 to rotate 180 degrees; a push rod 2 412 is fixed on one end of each turntable 43 facing the movable plate 41, and a plurality of push rods 1 411 are rotatably installed on the movable plate 41, and the plurality of push rods 1 411 correspond one-to-one to the plurality of push rods 2 412 respectively. The push rod 1 411 and the push rod 2 412 are respectively used to press against the axial ends of the capacitor housing. When the turntable 43 rotates, the push rod 2 412 is driven to rotate, so that the capacitor and the push rod 1 411 rotate together.

[0033] Furthermore, if Figure 5 and Figure 6 As shown, a circle of air guide grooves 431 are provided on the outer circumference of the turntable 43, and an air cavity 432 and an air channel 433 are provided inside the turntable 43. The air cavity 432 is connected to the inner cavity of the conduit 44, and the air channel 433 is connected to the air cavity 432 and the air guide groove 431. The air in the air guide groove 431 enters the air cavity 432 through the air channel 433, and then can be discharged through the conduit 44; when the positive pin of the capacitor is located in the conduit 44, the air will not be discharged from the conduit 44, and when the positive pin of the capacitor is moved out of the conduit 44 or is located outside the conduit 44, the air is discharged through the conduit 44. The pneumatic selection device includes an air supply pipe 5, a sealing ring 441, a cylinder 45, a plug rod 451 and a linkage mechanism; the air supply pipe 5 is fixed on the movable plate 2 42, the air inlet of the air supply pipe 5 is connected to the air source (not shown in the figure), and the air outlet of the air supply pipe 5 is connected to the air guide groove 431, and the high-pressure air from the air source enters the air guide groove 431 through the air supply pipe 5; the sealing ring 441 is embedded in the inner circumferential surface of the guide tube 44, specifically, the sealing ring 441 is embedded in the cavity wall surface of the cylindrical inner cavity, and is located between the turntable 43 and the sealing ring 441. The length of the cylindrical inner cavity between the sealing ring 441 and the truncated cone-shaped inner cavity is smaller than the length of the cylindrical inner cavity between the sealing ring 441 and the truncated cone-shaped inner cavity, and the positive pin of the capacitor is located in the cylindrical inner cavity between the sealing ring 441 and the truncated cone-shaped inner cavity; the inner diameter of the sealing ring 441 is smaller than the diameter of the positive pin of the capacitor. When the positive pin of the capacitor is inserted into the conduit 44, the positive pin of the capacitor presses against the sealing ring 441 and forms a partition with the sealing ring 441, dividing the cylindrical inner cavity into two, so that the air in the air cavity 432 cannot be discharged through the conduit 44. The cylinder 45 is fixed to the other end of the turntable 43. The cylinder 45 and the turntable 43 have the same central axis. The inner cavity of the cylinder 45 is connected to the airway 433. One end of the plug rod 451 is arranged in the inner cavity of the cylinder 45, and the other end is located outside the cylinder 45 and connected to the linkage mechanism. The linkage mechanism is connected to the cylinder 45 in a transmission manner. When the cylindrical inner cavity is separated by a partition, the air in the air guide groove 431 enters the cylinder 45 through the airway 433, pushing the plug rod 451 out of the cylinder 45, causing the linkage mechanism to operate, driving the turntable 43 to rotate, thereby realizing the rotation of the capacitor.

[0034] As shown in Figure 5 and Figure 6 shown, the linkage mechanism includes a linkage rod 46, a linkage shaft 47 and a linkage cylinder 48. One end of the linkage rod 46 is rotatably sleeved on the outer surface of the plug rod 451, and the other end of the linkage rod 46 is fixedly connected to the linkage shaft 47. The linkage cylinder 48 is sleeved on the outer surface of the linkage shaft 47, and a spiral mating mechanism is formed between the linkage shaft 47 and the linkage cylinder 48; when the plug rod 451 slides out of the cylinder body 45, it drives the linkage rod 46 to move to the side away from the second moving plate 42, pulling the linkage shaft 47 out of the linkage cylinder 48, and driving the linkage cylinder 48 to rotate by means of the spiral fit formed between the linkage shaft 47 and the linkage cylinder 48; the linkage cylinder 48 and the cylinder body 45 are connected together by a gear drive. When the linkage cylinder 48 rotates, it drives the cylinder body 45 to rotate through the gear drive mechanism, realizing the rotation of the turntable 43.

[0035] The linkage cylinder 48 is rotatably installed on the second moving plate 42 through a support 481. Specifically, the support 481 is fixed to the end of the second moving plate 42 away from the first moving plate 41, and the linkage cylinder 48 passes through and is rotatably connected to the support 481. An elastic member 482 is arranged between the linkage cylinder 48 and the support 481. During the process of the plug rod 451 sliding out of the cylinder body 45, the elastic member 482 undergoes elastic deformation and stores elastic potential energy; a braking member 483 is arranged between the turntable 43 and the second moving plate 42; after the turntable 43 is driven to rotate 180 degrees by the pneumatic selection device, the elastic member 482 drives the turntable 43 to rotate and reset; after the turntable 43 is reset, the braking member 483 is used to prevent the turntable 43 from continuing to rotate along the reset rotation direction.

[0036] In this embodiment, the elastic member 482 can be any one of a coil spring, a torsion spring and a spring. The coil spring, the torsion spring or the spring is sleeved on the linkage cylinder 48. One end of the coil spring, one end of the torsion spring or one end of the spring is fixedly connected to the support 481, and the other end of the coil spring, the other end of the torsion spring or the other end of the spring is fixedly connected to the linkage cylinder 48. During the process of the positive electrode pin of the capacitor moving out of the conduit 44, the elastic member 482 drives the linkage cylinder 48 to rotate, causing the cylinder body 45 and the turntable 43 to rotate and reset, retracting the linkage shaft 47 into the linkage cylinder 48, and retracting the plug rod 451 into the cylinder body 45.

[0037] In this embodiment, the braking member 483 includes a braking column and two braking plates. The braking column is fixed to the end of the second moving plate 42 facing the first moving plate 41, and both braking plates are fixed to the end of the turntable 43 facing the first moving plate 41, as Figure 4As shown. In the initial state, a brake plate abuts against the brake column, and the other brake plate is away from the brake column. After the turntable 43 is driven by the pneumatic selection device to rotate 180 degrees, the brake plate that originally abutted against the brake column disengages from the brake column, and the brake plate that originally disengaged from the brake column abuts against the brake column, so that the turntable 43 will not be driven by the pneumatic selection device to continue rotating; after the turntable 43 is rotated and reset by the elastic member 482, the brake member 483 returns to the initial state.

[0038] The material transfer mechanism 6 includes a three-axis robotic arm 61 and a capacitor ejecting device 62. A capacitor fixture 63 is installed at the output end of the three-axis robotic arm 61. The capacitor ejecting device 62 is used to eject the capacitors on the conveyor 2 into the capacitor fixture 63. Define the conveying direction of the conveyor 2 as the X direction. The three-axis robotic arm 61 provides movement along the Y axis, movement along the Z axis, and rotation about the X axis, so that the capacitor fixture 63 has three degrees of freedom; the capacitor ejecting device 62 includes a plurality of air cylinders and a plurality of pushing frames. The plurality of pushing frames are fixedly arranged at the output ends of the plurality of air cylinders respectively, and the air cylinders are fixed on the test bench 1; when the capacitor inlet of the capacitor fixture 63 faces the groove 231 horizontally, the air cylinder drives the pushing frame to move, and pushes the capacitor housing into the capacitor fixture 63. After that, the capacitor fixture 63 clamps and fixes the capacitor. Then, the capacitor is moved above the capacitor test circuit board 7 by the three-axis robotic arm 61 and inserted into the capacitor test circuit board 7.

[0039] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic testing device for capacitor aging test, characterized in that, The invention comprises a test bench (1), a conveyor (2), a first aligning mechanism (3), a second aligning mechanism (4) and a material moving mechanism (6); a capacitance test circuit board (7) is embedded on one side of the top of the test bench (1); a capacitance waveform monitoring display (8) is arranged on the side of the test bench (1); the capacitance waveform monitoring display (8) is electrically connected to the capacitance test circuit board (7) through a wire; the conveyor (2) is arranged on the other side of the top of the test bench (1); the first aligning mechanism (3), a second aligning mechanism (4) and a material moving mechanism (6) are arranged in sequence upstream of the conveyor (2) and along the conveying direction of the conveyor (2); The conveyor (2) is provided with a first straightening mechanism (3) and a second straightening mechanism (4), wherein the material moving mechanism (6) is arranged downstream of the conveyor (2); the material moving mechanism (6) is used to move the capacitor to a capacitor test circuit board (7); the conveyor (2) is used to convey the capacitor and move the capacitor to the first straightening mechanism (3), the second straightening mechanism (4) and the material moving mechanism (6) in sequence; the first straightening mechanism (3) is used to adjust the positive and negative pins of the capacitor to the same horizontal plane, and the second straightening mechanism (4) is used to adjust the positive pin of the capacitor to be close to the upstream or downstream of the conveyor (2); The second alignment mechanism (4) comprises a movable plate 1 (41) and a movable plate 2 (42) respectively arranged on both sides of the frame (21); a plurality of rotating disks (43) are embedded on the movable plate 2 (42); the rotating disks (43) and the movable plate 2 (42) are rotatably matched; a conduit (44) is eccentrically arranged on one end of the rotating disk (43) facing the movable plate 1 (41); the conduit (44) is matched with the positive pin of the capacitor; a plurality of pneumatic selection devices are installed on the movable plate 2 (42); the plurality of pneumatic selection devices correspond to the plurality of rotating disks (43) one by one; when the positive pin of the capacitor is inserted into the conduit (44), the corresponding pneumatic selection device drives the rotating disk (43) to rotate 180 degrees; The outer circumferential surface of the rotating disk (43) is provided with a circle of air guide grooves (431); the rotating disk (43) is provided with an air cavity (432) and an air passage (433); the air cavity (432) is connected to the inner cavity of the guide tube (44); the air passage (433) is connected to the air cavity (432) and the air guide grooves (431); the pneumatic selection device comprises an air supply pipe (5), a sealing ring (441), a cylinder (45), a plug rod (451) and a linkage mechanism; the air supply pipe (5) is used to supply air to the air guide grooves (431), the sealing ring (441) is embedded in the inner circumference of the conduit (44), the inner diameter of the sealing ring (441) is smaller than the diameter of the positive pin of the capacitor, the cylinder (45) is fixed to the other end of the rotating disk (43), the inner cavity of the cylinder (45) is connected to the airway (433), one end of the plug rod (451) is arranged in the inner cavity of the cylinder (45), and the other end is located outside the cylinder (45) and connected to the linkage mechanism, and the linkage mechanism is connected to the cylinder (45); The linkage mechanism includes a linkage rod (46), a linkage shaft (47) and a linkage cylinder (48). One end of the linkage rod (46) is rotatably sleeved on the outer surface of the plug rod (451), and the other end of the linkage rod (46) is connected and fixed to the linkage shaft (47). The linkage cylinder (48) is sleeved on the outer surface of the linkage shaft (47), and a spiral mating mechanism is formed between the linkage shaft (47) and the linkage cylinder (48); the linkage cylinder (48) and the cylinder body (45) are connected together by gear transmission; the linkage cylinder (48) is rotatably mounted on the second moving plate (42) through a support (481).

2. The fully automatic testing device for capacitor aging test according to claim 1, wherein: The conveyor (2) includes a frame (21) and a conveyor belt (22) arranged inside the frame (21). A plurality of carriers (23) are fixedly installed on the surface of the conveyor belt (22) at uniform intervals along the rotary conveying direction. Grooves (231) matching the capacitor housing are provided on the carriers (23); the first alignment mechanism (3) includes a first baffle (31) and an adjustment frame (32) respectively fixed on both sides of the frame (21). A second baffle (33) is arranged between the first baffle (31) and the adjustment frame (32). The second baffle (33) is fixedly connected to the first baffle (31) through a U-shaped connecting plate (34). A gap is left between the second baffle (33) and the frame (21). A guide groove (321) and an adjustment groove (322) are formed on the adjustment frame (32). The adjustment groove (322) is an open groove, and the narrow opening of the adjustment groove (322) communicates with the guide groove (321).

3. The fully automatic testing equipment for capacitor aging test according to claim 2, wherein: A second ejector rod (412) is fixed to one end of each turntable (43) facing the first moving plate (41). A plurality of first ejector rods (411) are rotatably mounted on the first moving plate (41). The plurality of first ejector rods (411) correspond to the plurality of second ejector rods (412) one by one. The first ejector rods (411) and the second ejector rods (412) are respectively used to press against the two axial ends of the capacitor housing.

4. The fully automatic testing equipment for capacitor aging test according to claim 3, characterized in that: An elastic member (482) is arranged between the linkage cylinder (48) and the support (481), and a braking member (483) is arranged between the turntable (43) and the second moving plate (42); after the turntable (43) is driven by the pneumatic selection device to rotate 180 degrees, the elastic member (482) drives the turntable (43) to rotate and reset; after the turntable (43) is reset, the braking member (483) is used to prevent the turntable (43) from continuing to rotate along the reset rotation direction.

5. The fully automatic test equipment for capacitor aging test according to claim 4, characterized in that: The material transfer mechanism (6) includes a three-axis robotic arm (61) and a capacitor ejecting device (62). A capacitor clamp (63) is installed at the output end of the three-axis robotic arm (61). The capacitor ejecting device (62) is used to eject the capacitor on the conveyor (2) into the capacitor clamp (63).

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