A capacitance visual inspection device

Abstract

This invention relates to the field of capacitor testing technology, and in particular to a capacitor visual inspection device, comprising a conveyor belt, a transfer mechanism, a testing mechanism, and a receiving tray. The testing mechanism is disposed between the transfer mechanism and the receiving tray, and the conveyor belt is disposed above the transfer mechanism. The transfer mechanism includes a transfer support plate, a transfer cylinder, and a transfer drive assembly. The testing mechanism includes a testing support plate, a turntable, a receiving trough, a rotation drive assembly, and a mounting frame. The mounting frame consists of a first vertical plate, a second vertical plate, and a horizontal plate. A first camera is disposed on the top of the horizontal plate, a second camera is disposed on the side of the first vertical plate, and a background plate is disposed on the second vertical plate. Through the arrangement of the testing mechanism and the transfer mechanism, the transfer mechanism transfers the capacitor to the testing mechanism. The first and second cameras of the testing mechanism acquire images of the periphery and top of the capacitor, and the acquired images are used for detection, achieving the purpose of effectively detecting the capacitor from different angles.

Description

Technical Field

[0001] This invention relates to the field of capacitance detection technology, and in particular to a capacitance visual inspection device. Background Technology

[0002] Capacitors are essential components in various circuits, and their quality directly affects circuit performance. Therefore, strict quality control is crucial during capacitor manufacturing. The appearance of a finished capacitor often directly reflects its quality; thus, current technology typically requires visual inspection to determine its quality, such as checking for exposed solder joints or bulging bottoms.

[0003] In capacitor manufacturing, production lines are primarily used for all production steps. However, manual inspection still exists in current technology. Manual visual inspection is inefficient, time-consuming, and labor-intensive, and its instability hinders the production of qualified products. Furthermore, existing capacitor appearance inspection systems mostly only detect localized defects, failing to guarantee the accuracy of the inspection results. Summary of the Invention

[0004] To overcome the shortcomings mentioned above, the present invention aims to provide a technical solution that can solve the above problems.

[0005] A capacitance visual inspection device, characterized in that it includes a conveyor belt, a material transfer mechanism, an inspection mechanism, and a receiving tray, wherein the inspection mechanism is disposed between the material transfer mechanism and the receiving tray, and the conveyor belt is disposed above the material transfer mechanism;

[0006] The material transfer mechanism includes a material transfer bearing plate, a material transfer cylinder slidably mounted on the top of the material transfer bearing plate, and a material transfer drive assembly for driving the material transfer cylinder to move along the material transfer bearing plate at the bottom of the material transfer bearing plate. An opening is opened on the side of the material transfer cylinder near the detection mechanism, and a stop block for closing the opening is hinged on the material transfer cylinder. When the material transfer cylinder moves towards the detection mechanism, the stop block flips outward to open the opening, and when the material transfer cylinder moves away from the detection mechanism, the stop block flips inward to close the opening.

[0007] The testing mechanism includes a testing support plate, a turntable rotatably mounted on the top of the testing support plate, several material receiving grooves on the outer periphery of the turntable, a rotation drive assembly for driving the turntable to rotate at the bottom of the testing support plate, a mounting frame located on one side of the turntable at the top of the testing support plate, the mounting frame consisting of a first vertical plate, a second vertical plate and a horizontal plate, a first camera vertically mounted on the top of the horizontal plate, a second camera horizontally mounted on the side of the first vertical plate, a background plate mounted on the second vertical plate, the second camera facing the background plate, and a material pushing assembly at the top of the testing support plate.

[0008] The top of the turntable has an annular boss, and several receiving grooves are arranged on the annular boss in a ring-shaped, equidistant pattern. The bottom of each receiving groove is recessed to form a receiving cavity, and a suction cup cover is installed inside the receiving cavity. The suction cup cover has an open end and a closed end. A suction cup pad is installed at the open end of the suction cup cover. The suction cup pad has an adsorption surface, which is flush with the bottom surface of the receiving groove. An air groove is provided on the adsorption surface. The cross-sectional shape of the air groove is an inverted cone shape, wider at the top and narrower at the bottom. A bowl-shaped elastic element is installed inside the suction cup cover. The edge of the bowl-shaped elastic element is pressed against the edge of the suction cup pad by the suction cup cover. The bowl-shaped elastic element and the suction cup pad... The suction cup space is formed by an air groove with an air hole at the bottom that communicates with the suction cup space. The closed end of the suction cup cover has a mounting hole with a sliding rod inserted through it. One end of the sliding rod is connected to a bowl-shaped elastic element, and the other end is connected to a stroke rod. The inner side of the annular boss has a waist-shaped hole that communicates with the accommodating cavity. The stroke rod passes through the waist-shaped hole. The top of the detection support plate is located on one side of the turntable and has a support frame. The support frame has an annular guide plate located inside the annular boss. The guide plate has a guide groove, and the stroke rod is inserted into the guide groove.

[0009] As a further embodiment of the present invention: the material transfer drive assembly includes a first drive motor, a first drive wheel, a first driven wheel, a first transmission belt, a sliding block, and a clamping block. The first drive wheel and the first driven wheel are spaced apart along the length of the material transfer bearing plate. The shaft of the first drive motor is coaxially connected to the first drive wheel. The sliding block is slidably installed at the bottom of the material transfer bearing plate and is located between the first drive wheel and the first driven wheel. The first transmission belt is sleeved on the outside of the first drive wheel and the first driven wheel. The clamping block is located at the bottom of the sliding block and clamped on the first transmission belt. A through groove is provided on the material transfer bearing plate, penetrating its top and bottom. The bottom of the material transfer cylinder passes through the through groove and is connected to the sliding block.

[0010] As a further aspect of the present invention: two baffles are spaced apart on the top of the conveyor belt, the ends of the two baffles extend from the output end of the conveyor belt, and a discharge frame is provided at the bottom of the ends of the two baffles, the discharge frame being located above the material transfer bearing plate.

[0011] As a further aspect of the present invention: there are two stops, which are respectively hinged to both sides of the transfer cylinder. The lower end of each stop is provided with a guide wheel shaft, and a guide wheel is rotatably mounted on each of the two guide wheel shafts. The beginning and end of the transfer bearing plate are provided with guide surfaces. From the beginning to the end of the transfer bearing plate, the guide surfaces gradually tilt outward. A tension spring is connected between the two guide wheel shafts. Under the action of the tension spring, the guide wheel always rolls in cooperation with the guide surface.

[0012] As a further embodiment of the present invention: the mounting frame also includes a support plate and a top plate. A first vertical plate is detachably mounted on one side of the support plate. An adjusting screw is rotatably mounted on the horizontal plate. A screw hole for threaded connection with the adjusting screw is opened at the top of the support plate. A through hole is opened on the horizontal plate, penetrating its top and bottom. The top plate is vertically set in the through hole. A first camera is detachably mounted on the upper end of the top plate. A light source is detachably mounted on the lower end of the top plate.

[0013] As a further aspect of the present invention, the testing mechanism also includes a defective product box, which is disposed on one side of the testing support plate.

[0014] As a further aspect of the present invention: the pushing assembly includes a support rod, a support block is provided on the support rod, a good product pushing cylinder is provided on one side of the support block, the output end of the good product pushing cylinder faces the receiving tray, a pushing plate is provided on the piston rod of the good product pushing cylinder, a mounting plate is vertically provided on the other side of the support block, a defective product pushing cylinder is provided at the lower end of the mounting plate, and the output end of the defective product pushing cylinder faces the defective product box.

[0015] As a further embodiment of the present invention: the rotation drive assembly includes a divider, a second drive motor, a second driving wheel, a second driven wheel and a second transmission belt. The input shaft of the divider is coaxially connected to the second driven wheel, the output shaft of the divider is coaxially connected to the turntable, the output shaft of the second drive motor is coaxially connected to the second driving wheel, and the second transmission belt is sleeved on the outside of the second driving wheel and the second driven wheel.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention, through the setting of a detection mechanism and a transfer mechanism, transfers the capacitor to the detection mechanism, and the first camera and the second camera of the detection mechanism acquire images of the periphery and top of the capacitor. The acquired images are used for detection to select defective products, thereby realizing the automated detection of capacitors and achieving the purpose of effectively detecting capacitors from different angles, thus improving the detection accuracy and efficiency of capacitors.

[0017] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of the present invention.

[0020] Figure 2 This is a schematic diagram of the baffle portion of the present invention.

[0021] Figure 3 This is a schematic diagram of the transfer cylinder part of the present invention.

[0022] Figure 4 This is a schematic diagram of the clamping block structure of the present invention.

[0023] Figure 5 This is a schematic diagram of the first camera component of the present invention.

[0024] Figure 6 This is a schematic diagram of the pusher plate part of the present invention.

[0025] Figure 7 This is a schematic diagram of the annular boss portion of the present invention.

[0026] Figure 8 This is a schematic diagram of the guide plate part of the present invention.

[0027] Figure 9 This is a schematic diagram of the first groove section of the present invention.

[0028] Figure 10 This is a schematic diagram of the second groove section of the present invention.

[0029] Figure 11 This is a schematic diagram of the third groove section of the present invention.

[0030] Figure 12 This is a schematic diagram of the sixth groove section of the present invention.

[0031] Figure 13 This is a schematic diagram of the rotating block portion of the present invention.

[0032] In the picture:

[0033] 1. Conveyor belt; 11. Baffle; 12. Discharge frame;

[0034] 2. Material transfer mechanism; 21. Material transfer bearing plate; 22. Material transfer cylinder; 23. Stop block; 24. Material transfer drive assembly; 25. First drive motor; 26. First driving wheel; 27. First driven wheel; 28. First transmission belt; 29. ​​Sliding block; 210. Clamping block; 211. Through groove; 212. Guide wheel; 213. Guide surface; 214. Guide wheel shaft; 215. Tension spring;

[0035] 3. Inspection Mechanism; 31. Inspection Support Plate; 32. Turntable; 33. Receiving Slot; 34. Rotation Drive Assembly; 35. First Vertical Plate; 36. Second Vertical Plate; 37. Horizontal Plate; 38. First Camera; 39. Second Camera; 310. Background Plate; 311. Pushing Assembly; 312. Support Plate; 313. Adjusting Screw; 314. Through Hole; 315. Light Source; 316. Support Rod; 317. Good Product Pushing Cylinder; 318. Pushing Plate; 319. Mounting Plate; 320. Defective Product Pushing Cylinder; 321. Divider; 322. Second Drive Motor; 323. Second Drive Wheel; 324. Second Driven Wheel; 325. Second Transmission Belt; 326. Annular Boss; 327. Receiving Cavity; 328. Suction Cup Pad; 329. Air Groove; 330. Bowl-shaped Elastic component, 331, suction cup space, 332, air hole, 333, sliding rod, 334, stroke rod, 335, waist-shaped hole, 336, support frame, 337, guide plate, 338, guide groove, 339, first groove segment, 340, second groove segment, 341, third groove segment, 342, fourth groove segment, 343, fifth groove segment, 344, sixth groove segment, 345, hinge block, 346, limiting plate, 347, electromagnet, 348, straightening seat, 349, rotating block, 350, arc plate, 351, slot, 352, straightening plate, 353, sliding plate, 354, return spring, 355, first convex tooth, 356, second convex tooth, 357, top plate, 358, defective product box, 359, support block, 360, suction cup cover, 361, cavity;

[0036] 4. Receiving tray. Detailed Implementation

[0037] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] Please see Figures 1-6 In this embodiment of the invention, a capacitance visual inspection device includes a conveyor belt 1, a material transfer mechanism 2, an inspection mechanism 3, and a receiving tray 4. The inspection mechanism 3 is disposed between the material transfer mechanism 2 and the receiving tray 4, and the conveyor belt 1 is disposed above the material transfer mechanism 2.

[0039] The material transfer mechanism 2 includes a material transfer bearing plate 21, a material transfer cylinder 22 is slidably mounted on the top of the material transfer bearing plate 21, and a material transfer drive assembly 24 is provided at the bottom of the material transfer bearing plate 21 for driving the material transfer cylinder 22 to move along the material transfer bearing plate 21. An opening is provided on the side of the material transfer cylinder 22 near the detection mechanism 3, and a stop block 23 for closing the opening is hinged on the material transfer cylinder 22. When the material transfer cylinder 22 moves toward the detection mechanism 3, the stop block 23 flips outward to open the opening, and when the material transfer cylinder 22 moves away from the detection mechanism 3, the stop block 23 flips inward to close the opening.

[0040] The testing mechanism 3 includes a testing support plate 31, a turntable 32 is rotatably mounted on the top of the testing support plate 31, and a number of material receiving grooves 33 are provided on the outer periphery of the turntable 32. A rotation drive assembly 34 for driving the turntable 32 to rotate is provided at the bottom of the testing support plate 31. A mounting frame is provided on the top of the testing support plate 31 on one side of the turntable 32. The mounting frame is composed of a first vertical plate 35, a second vertical plate 36 and a horizontal plate 37. A first camera 38 is vertically arranged on the top of the horizontal plate 37. A second camera 39 is horizontally arranged on the side of the first vertical plate 35. A background plate 310 is provided on the second vertical plate 36. The second camera 39 faces the background plate 310. A material pushing assembly 311 is also provided on the top of the testing support plate 31.

[0041] The conveyor belt 1 of this invention is connected to the capacitor production line. Capacitors produced by the capacitor production line fall into the transfer cylinder 22 via the conveyor belt 1. While the transfer cylinder 22 moves along the transfer support plate 21 under the drive of the transfer drive assembly 24, the stop block 23 flips outward to open the opening. The capacitors in the transfer cylinder 22 can then be moved from the opening onto the transfer support plate 21, and then into the receiving groove 33 via the transfer support plate 21. Next, the turntable 32, driven by the rotation drive assembly 34, moves the capacitors in the receiving groove 33 to below the first camera 38, and onto the second camera 38. Between the capacitor and the background plate 310, the first camera 38 and the second camera 39 capture images of the capacitor's periphery and top. By comparing the captured images with the preset template information, it is determined whether the shape of the capacitor's periphery and top meets the preset requirements, thereby realizing automated detection of the capacitor and achieving the purpose of effectively detecting the capacitor from different angles, thus improving the detection accuracy and efficiency of the capacitor. After visual inspection, the capacitor is moved to the receiving tray 4 by the turntable 32, and the pushing component 311 pushes the capacitor that meets the preset requirements into the receiving tray 4.

[0042] The material transfer drive assembly 24 includes a first drive motor 25, a first drive wheel 26, a first driven wheel 27, a first transmission belt 28, a sliding block 29, and a clamping block 210. The first drive wheel 26 and the first driven wheel 27 are spaced apart along the length of the material transfer support plate 21. The shaft of the first drive motor 25 is coaxially connected to the first drive wheel 26. The sliding block 29 is slidably installed at the bottom of the material transfer support plate 21 and is located between the first drive wheel 26 and the first driven wheel 27. The first transmission belt 28 is sleeved on the outside of the first drive wheel 26 and the first driven wheel 27. The clamping block 210 is located at the bottom of the sliding block 29 and is clamped on the first transmission belt 28. The material transfer support plate 21 has a through groove 211 that runs through its top and bottom. The bottom of the material transfer cylinder 22 passes through the through groove 211 and is connected to the sliding block 29. Thus, the first drive motor 25 starts to operate, and under the transmission of the first drive wheel 26, the first driven wheel 27 and the first transmission belt 28, it drives the sliding block 29 to move back and forth along the material transfer bearing plate 21, thereby driving the material transfer cylinder 22 to move back and forth along the material transfer bearing plate 21, so as to push the capacitors on the material transfer bearing plate 21 one by one into the receiving groove 33.

[0043] Two baffles 11 are spaced apart at the top of the conveyor belt 1, with the ends of both baffles 11 extending from the output end of the conveyor belt 1. A discharge frame 12 is located at the bottom of the ends of the two baffles 11, positioned above the transfer bearing plate 21. The two baffles 11 prevent capacitors from falling off the conveyor belt 1, and the discharge frame 12 ensures that the capacitors on the conveyor belt 1 fall precisely into the transfer cylinder 22.

[0044] There are two stops 23, which are hinged to both sides of the transfer cylinder 22. The lower end of each stop is provided with a guide wheel shaft 214, and a guide wheel 212 is rotatably mounted on each guide wheel shaft 214. The beginning and end of the transfer bearing plate 21 are provided with guide surfaces 213. From the beginning to the end of the transfer bearing plate 21, the guide surfaces 213 gradually tilt outward. A tension spring 215 is connected between the two guide wheel shafts 214. Under the action of the tension spring 215, the guide wheel 212 always rolls with the guide surface. As the transfer cylinder 22 moves toward the detection mechanism 3, the two guide wheels 212 roll into contact with the guide surfaces 213 on both sides of the transfer bearing plate 21, causing the two guide wheels 212 to move away from each other, thereby causing the stop block 23 to flip outward and open the opening. Under the action of the tension spring 215, the two guide wheels 212 tend to move closer to each other. Thus, as the transfer cylinder 22 moves away from the detection mechanism 3, the two guide wheels 212 always roll into contact with the guide surfaces 213 on both sides of the transfer bearing plate 21, thereby causing the stop block 23 to flip inward and close the opening to receive the capacitor falling from the discharge frame 12.

[0045] The mounting bracket also includes a support plate 312 and a top plate 357. A first vertical plate 35 is detachably mounted on one side of the support plate 312. An adjusting screw 313 is rotatably mounted on a horizontal plate 37. The top of the support plate 312 has a screw hole for threaded connection with the adjusting screw 313. The horizontal plate 37 has a through hole 314 penetrating its top and bottom. The top plate 357 is vertically positioned within the through hole 314. A first camera 38 is detachably mounted on the upper end of the top plate 357, and a light source 315 is detachably mounted on the lower end of the top plate 357. Thus, in use, the first vertical plate 35 can be removed, and the height of the horizontal plate 37 can be adjusted by rotating the adjusting screw 313, thereby adjusting the height of the first camera 38 and the second camera 39, improving practicality. Furthermore, the light source 315 can improve illumination and ensure detection accuracy. In addition, the light source 315 and the first camera 38 are detachable, facilitating replacement and adjustment of their mounting positions.

[0046] The inspection mechanism 3 also includes a defective product box 358, which is located on one side of the inspection support plate 31. The pushing assembly 311 includes a support rod 316, which is located on the top of the inspection support plate 31 and on one side of the turntable 32. A support block 359 is provided on the support rod 316. A good product pushing cylinder 317 is provided on one side of the support block 359. The output end of the good product pushing cylinder 317 faces the receiving tray 4. A pushing plate 318 is provided on the piston rod of the good product pushing cylinder 317. A mounting plate 319 is vertically provided on the other side of the support block 359. A defective product pushing cylinder 320 is provided at the lower end of the mounting plate 319. The output end of the defective product pushing cylinder 320 faces the defective product box 358. After testing, capacitors that meet the preset requirements are moved to the receiving tray 4 by the turntable 32. The good product pusher cylinder 317 drives the pusher plate 318 to move, pushing the capacitors on the turntable 32 into the receiving tray 4. Capacitors that do not meet the preset requirements are moved to the defective product box 358 by the turntable 32 and pushed into the defective product box 358 by the defective product pusher cylinder 320.

[0047] The rotation drive assembly 34 includes a divider 321, a second drive motor 322, a second drive pulley 323, a second driven pulley 324, and a second transmission belt 325. The input shaft of the divider 321 is coaxially connected to the second driven pulley 324, and the output shaft of the divider 321 is coaxially connected to the turntable 32. The output shaft of the second drive motor 322 is coaxially connected to the second drive pulley 323. The second transmission belt 325 is sleeved on the second drive pulley 323 and the second driven pulley 324. When the second drive motor 322 is turned on, it transmits power to the divider 321 through the second drive pulley 323, the second driven pulley 324, and the second transmission belt 325, thereby driving the turntable 32 to rotate.

[0048] During the movement of the capacitor by the turntable 32, the capacitor may tilt. Tilted capacitors are easily misjudged as defective and thus discharged into the defective product box 358. This can lead to deformation of the capacitor leads in misjudged capacitors, increasing production costs. Therefore, refer to... Figures 7-12 The present invention also provides an embodiment to solve the above-mentioned technical problems.

[0049] The top of the turntable 32 is provided with an annular boss 326, and several receiving grooves 33 are arranged on the annular boss 326 in a ring-shaped and equidistant distribution. The bottom of the receiving groove 33 is recessed to form a receiving cavity 327. A suction cup cover 360 is provided in the receiving cavity 327. The suction cup cover 360 has an open end and a closed end. A suction cup pad 328 is provided at the open end of the suction cup cover 360. The suction cup pad 328 has an adsorption surface, and the adsorption surface is flush with the bottom surface of the receiving groove 33. An air groove 329 is provided on the adsorption surface. The cross-section of the air groove 329 is shown in the figure. The suction cup is shaped like an inverted cone, wider at the top and narrower at the bottom. A bowl-shaped elastic element 330 is provided inside the suction cup cover 360. The edge of the bowl-shaped elastic element 330 is pressed onto the edge of the suction cup pad 328 through the suction cup cover 360. The bowl-shaped elastic element 330 and the suction cup pad 328 form a suction cup space 331. An air hole 332 communicating with the suction cup space 331 is opened at the bottom of the air groove 329. An installation hole is opened at the closed end of the suction cup cover 360. A sliding rod 333 is inserted into the installation hole. One end of the sliding rod 333 is connected to the bowl-shaped elastic element 330.

[0050] The other end of the sliding rod 333 is connected to the stroke rod 334. The inner side of the annular boss 326 has a vertically oriented oblong hole 335 communicating with the accommodating cavity 327. The stroke rod 334 passes through the oblong hole 335. A support frame 336 is provided on the top of the detection bearing plate 31, located on one side of the turntable 32. An annular guide plate 337 is provided on the support frame 336, located inside the annular boss 326. A guide groove 338 is provided on the guide plate 337, and the stroke rod 334 is inserted into the guide groove 338. The guide groove 338 includes a connected first... The first groove segment 339, the second groove segment 340, the third groove segment 341, the fourth groove segment 342, the fifth groove segment 343, and the sixth groove segment 344 extend circumferentially along the guide plate 337. The second groove segment 340, the fourth groove segment 342, and the sixth groove segment 344 intersect the axis of the guide plate 337. The centerline of the first groove segment 339 is higher than the centerline of the third groove segment 341. The centerline of the third groove segment 341 and the centerline of the fifth groove segment 343 are located on the same plane. The end of the first groove segment 339... The end of the second groove segment 340 is connected to the beginning of the third groove segment 341, the end of the third groove segment 341 is connected to the beginning of the fourth groove segment 342, the end of the fourth groove segment 342 is connected to the beginning of the first groove segment 339, the beginning of the fifth groove segment 343 is connected to the end of the third groove segment 341, the end of the fifth groove segment 343 is connected to the beginning of the sixth groove segment 344, and the end of the sixth groove segment 344 is connected to the first groove segment 339. The second groove segment 340 is located between the material transfer bearing plate 21 and the mounting frame, and the fourth groove segment... 342 is located between the mounting frame and the receiving tray 4. The sixth groove section 344 is located between the receiving tray 4 and the defective product box 358. A hinge block 345 is provided on the outer side of the guide plate 337 and on one side of the fourth groove section 342. A limit plate 346 is hinged on the hinge block 345. An electromagnet 347 is provided on the outer side of the guide plate 337 and on the other side of the fourth groove section 342. The limit plate 346 is made of magnetic material. When the limit plate 346 and the electromagnet 347 are attracted, the side of the limit plate 346 is flush with the inner wall of the third groove section 341 and the fifth groove section 343.

[0051] When a capacitor enters the receiving groove 33, the bottom of the capacitor contacts the bottom of the receiving groove 33, and the bottom of the capacitor forms a closed adsorption space with the air groove 329. During the process of the turntable 32 moving the capacitor to below the first camera 38, the stroke rod 334 moves along the first groove section 339, the second groove section 340 and the third groove section 341, thereby driving the sliding rod 333 to move downward, causing the bowl-shaped elastic element 330 to deform to an expanded state, making the volume of the suction cup space 331 larger, so that the air in the adsorption space formed by the air groove 329 and the bottom of the capacitor is sucked into the suction cup space 331 through the air hole 332, so that a negative pressure is formed between the suction cup pad 328 and the surface of the capacitor, thereby generating suction to adsorb the capacitor, preventing the capacitor from tilting during the movement of the capacitor, so that the capacitor always remains in a vertical state in the receiving groove 33 until below the first camera 38. In this way, the first camera 38 and the second camera 39 can avoid the situation of misjudging the capacitor due to the incorrect posture of the capacitor.

[0052] It should be noted that the sliding rod 333, driven by the bowl-shaped elastic element 330, always tends to move upward. When the turntable 32 moves the capacitor from below the first camera 38 to the receiving tray 4, if the capacitor is a good product after testing, the electromagnet 347 will not be turned on. When the stroke rod 334 moves along the third groove 341 to the connection between the fourth groove 342 and the fifth groove 343, the sliding rod 333 moves upward under the drive of the bowl-shaped elastic element 330, so that the stroke rod 334 moves along the fourth groove 342 to the first groove 339. At this time, the bowl-shaped elastic element 330 returns to its initial state, the volume of the suction cup space 331 becomes smaller, and the air returns to the adsorption space through the air hole 332, so that a positive pressure is formed between the suction cup pad 328 and the capacitor surface, releasing the adsorption of the capacitor. The pusher plate 318 can then push the capacitor into the receiving tray 4 under the drive of the good product pusher cylinder 317.

[0053] If the capacitor is found to be defective after inspection, it moves from below the first camera 38, through the receiving tray 4, to the defective product box 358 under the drive of the turntable 32. The good product pusher cylinder 317 does not operate, while the electromagnet 347 operates to attract the limiting plate 346. When the stroke rod 334 moves along the third groove 341 to the connection between the fourth groove 342 and the fifth groove 343, under the restriction of the limiting plate 346, the stroke rod 334 moves along the fifth groove 343 to the sixth groove 344, and then moves through the sixth groove 344 to the first groove 339. This prevents the capacitor from being released from its attraction when passing through the receiving tray 4, thus avoiding the capacitor falling off. After the stroke rod 334 returns to the first groove 339, the attraction to the capacitor is released. At this time, the capacitor moves to the defective product box 358 under the drive of the turntable 32 and is pushed into the defective product box 358 by the defective product cylinder.

[0054] After a capacitor located on the transfer support plate 21 falls into the receiving trough 33, it may tilt. A tilted capacitor is difficult to retain. Therefore, refer to... Figure 7 , Figure 13 The present invention also provides an embodiment in which a straightening seat 348 is provided on both sides of the annular boss 326 and on both sides of the receiving groove 33. A cavity 361 is provided inside the straightening seat 348, and a disc-shaped rotating block 349 is rotatably mounted inside the cavity 361. An arc-shaped plate 350 is provided on the outer periphery of the rotating block 349. A slot 351 is provided on the side of the straightening seat 348 near the receiving groove 33. The end of the arc-shaped plate 350 extends through the slot 351 and is connected to a straightening plate 352. The end of the straightening plate 352 extends to the annular boss 326. Above the protrusion 326, a sliding plate 353 is slidably installed in the cavity 361 below the rotating block 349. A return spring 354 is connected between the beginning of the sliding plate 353 and the inner wall of the cavity 361. The end of the sliding plate 353 passes through the slot 351 and extends to half the width of the waist-shaped hole 335. The outer periphery of the rotating block 349 is provided with a number of first protrusions 355, and the sliding plate 353 is provided with a number of second protrusions 356. The first protrusions 355 and the second protrusions 356 mesh with each other.

[0055] During the process of the turntable 32 moving the capacitor to below the first camera 38, the stroke rod 334 moves along the first groove segment 339, the second groove segment 340 and the third groove segment 341, and comes into contact with the sliding plate 353, thereby pushing the sliding plate 353 to move away from the receiving groove 33. With the cooperation of the first convex tooth 355 and the second convex tooth 356, the rotating block 349 is driven to rotate, thereby bringing the two straightening plates 352 closer to each other to straighten the tilted capacitor to a vertical state. Then the suction cup pad 328 holds the capacitor. When the stroke rod 334 moves to a certain position, the stroke rod 334 will disengage from the sliding plate 353. The sliding plate 353 moves back to its original position under the action of the return spring 354, thereby moving the straightening plate 352 away from the capacitor, avoiding the straightening plate 352 from always being in contact with the capacitor, which would affect the detection effect. It should also be noted that an elastic pad can be set on the side of the straightening plate 352 near the capacitor to avoid the straightening plate 352 making hard contact with the capacitor, which would damage the capacitor.

[0056] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within the present invention.

Claims

1. A capacitance visual inspection device, characterized in that, It includes a conveyor belt, a material transfer mechanism, a detection mechanism, and a receiving tray. The detection mechanism is located between the material transfer mechanism and the receiving tray, and the conveyor belt is located above the material transfer mechanism. The material transfer mechanism includes a material transfer bearing plate, a material transfer cylinder slidably mounted on the top of the material transfer bearing plate, and a material transfer drive assembly for driving the material transfer cylinder to move along the material transfer bearing plate at the bottom of the material transfer bearing plate. An opening is opened on the side of the material transfer cylinder near the detection mechanism, and a stop block for closing the opening is hinged on the material transfer cylinder. When the material transfer cylinder moves towards the detection mechanism, the stop block flips outward to open the opening, and when the material transfer cylinder moves away from the detection mechanism, the stop block flips inward to close the opening. The testing mechanism includes a testing support plate, a turntable rotatably mounted on the top of the testing support plate, several material receiving grooves on the outer periphery of the turntable, a rotation drive assembly for driving the turntable to rotate at the bottom of the testing support plate, a mounting frame located on one side of the turntable at the top of the testing support plate, the mounting frame consisting of a first vertical plate, a second vertical plate and a horizontal plate, a first camera vertically mounted on the top of the horizontal plate, a second camera horizontally mounted on the side of the first vertical plate, a background plate mounted on the second vertical plate, the second camera facing the background plate, and a material pushing assembly at the top of the testing support plate. The top of the turntable has an annular boss, and several receiving grooves are arranged on the annular boss in a ring-shaped, equidistant pattern. The bottom of each receiving groove is recessed to form a receiving cavity, and a suction cup cover is installed inside the receiving cavity. The suction cup cover has an open end and a closed end. A suction cup pad is installed at the open end of the suction cup cover. The suction cup pad has an adsorption surface, which is flush with the bottom surface of the receiving groove. An air groove is provided on the adsorption surface. The cross-sectional shape of the air groove is an inverted cone shape, wider at the top and narrower at the bottom. A bowl-shaped elastic element is installed inside the suction cup cover. The edge of the bowl-shaped elastic element is pressed against the edge of the suction cup pad by the suction cup cover. The bowl-shaped elastic element and the suction cup pad... The suction cup space is formed by an air groove with an air hole at the bottom that communicates with the suction cup space. The closed end of the suction cup cover has a mounting hole with a sliding rod inserted through it. One end of the sliding rod is connected to a bowl-shaped elastic element, and the other end is connected to a stroke rod. The inner side of the annular boss has a waist-shaped hole that communicates with the accommodating cavity. The stroke rod passes through the waist-shaped hole. The top of the detection support plate is located on one side of the turntable and has a support frame. The support frame has an annular guide plate located inside the annular boss. The guide plate has a guide groove, and the stroke rod is inserted into the guide groove.

2. The capacitance visual inspection device according to claim 1, characterized in that: The material transfer drive assembly includes a first drive motor, a first drive wheel, a first driven wheel, a first transmission belt, a sliding block, and a clamping block. The first drive wheel and the first driven wheel are spaced apart along the length of the material transfer support plate. The shaft of the first drive motor is coaxially connected to the first drive wheel. The sliding block is slidably mounted on the bottom of the material transfer support plate and is located between the first drive wheel and the first driven wheel. The first transmission belt is sleeved on the outside of the first drive wheel and the first driven wheel. The clamping block is located at the bottom of the sliding block and clamps the first transmission belt. A through groove is provided on the material transfer support plate, penetrating its top and bottom. The bottom of the material transfer cylinder passes through the through groove and is connected to the sliding block.

3. The capacitance visual inspection device according to claim 1, characterized in that: Two baffles are spaced apart on the top of the conveyor belt. The ends of the two baffles extend from the output end of the conveyor belt. A discharge frame is provided at the bottom of the ends of the two baffles, and the discharge frame is located above the material transfer bearing plate.

4. The capacitance visual inspection device according to claim 1, characterized in that: There are two stops, which are hinged to both sides of the transfer cylinder. Each stop has a guide wheel shaft at its lower end, and a guide wheel is rotatably mounted on each guide wheel shaft. Guide surfaces are provided on both sides of the beginning of the transfer bearing plate. From the beginning to the end of the transfer bearing plate, the guide surfaces gradually tilt outward. A tension spring is connected between the two guide wheel shafts. Under the action of the tension spring, the guide wheel always rolls in cooperation with the guide surface.

5. The capacitance visual inspection device according to claim 1, characterized in that: The mounting bracket also includes a support plate and a top plate. The first vertical plate is detachably mounted on one side of the support plate. An adjusting screw is rotatably mounted on the horizontal plate. The top of the support plate has a screw hole for threaded connection with the adjusting screw. The horizontal plate has a through hole that runs through its top and bottom. The top plate is vertically mounted in the through hole. The first camera is detachably mounted on the upper end of the top plate. A light source is detachably mounted on the lower end of the top plate.

6. The capacitance visual inspection device according to claim 1, characterized in that: The testing facility also includes a defective product box, which is located on one side of the testing support plate.

7. The capacitance visual inspection device according to claim 6, characterized in that: The feeding assembly includes a support rod with a support block on it. A good product feeding cylinder is provided on one side of the support block, with the output end of the good product feeding cylinder facing the receiving tray. A feeding plate is provided on the piston rod of the good product feeding cylinder. A mounting plate is vertically provided on the other side of the support block, with a defective product feeding cylinder provided at the lower end of the mounting plate. The output end of the defective product feeding cylinder faces the defective product box.

8. The capacitance visual inspection device according to claim 1, characterized in that: The rotary drive assembly includes a divider, a second drive motor, a second driving wheel, a second driven wheel, and a second transmission belt. The input shaft of the divider is coaxially connected to the second driven wheel, the output shaft of the divider is coaxially connected to the turntable, the output shaft of the second drive motor is coaxially connected to the second driving wheel, and the second transmission belt is sleeved on the outside of the second driving wheel and the second driven wheel.

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