An electronic component appearance inspection device

Abstract

The application discloses a kind of electronic components appearance detection device, it is related to visual inspection technical field, including: rack, it is set on the strip chain for conveying diode;Driving mechanism, it includes variable frequency motor, first synchronous belt and driving spindle, driving spindle rotatably installed on rack, the output end of variable frequency motor is driven driving spindle rotation by first synchronous belt;Feeding mechanism, it is set with strip chain one end;Lead straight mechanism, it includes lead straight frame, lead straight wheel and second speed reducer;Cylindrical surface detection mechanism, it is used to carry out visual inspection to the cylindrical surface of diode;End surface detection mechanism, it is used to carry out visual inspection to the end surface of diode;Discharging mechanism.The application compared with prior art, solve the problem that appearance detection mechanism and lead straight mechanism are not realized organic combination in existing diode appearance detection device, insufficient integration.

Description

Technical Field

[0001] This invention relates to the field of visual inspection technology, and in particular to an electronic component appearance inspection device. Background Technology

[0002] A diode is an electronic device made of semiconductor materials. Diodes exhibit unidirectional conductivity; when conducting, the current flows from the anode through the tube to the cathode. Diode manufacturing is automated using diode sorting machines, which enable efficient sorting, testing, and packaging of diodes.

[0003] After diode manufacturing, the diode body needs to undergo end-face and cylindrical surface inspections to eliminate defective diodes. Since incompletely straightened diode leads affect these appearance inspections, diode testing equipment typically includes a straightening mechanism in front of the appearance inspection unit to straighten the diode leads. However, in existing equipment, the appearance inspection and straightening mechanisms are structurally independent, simply arranged in a straight line on the frame, resulting in insufficient integration and a large size. Summary of the Invention

[0004] The purpose of this invention is to provide an electronic component appearance inspection device to solve the problem that the appearance inspection mechanism and the straightening mechanism in existing diode appearance inspection devices are not organically combined and have insufficient integration.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an electronic component appearance inspection device, comprising:

[0006] A frame on which a conveyor belt for transporting diodes is installed;

[0007] The drive mechanism includes a variable frequency motor, a first synchronous belt, and a drive spindle. The drive spindle is rotatably mounted on the frame, and the output end of the variable frequency motor drives the drive spindle to rotate through the first synchronous belt.

[0008] The feeding mechanism is located at one end of the conveyor chain;

[0009] A straightening mechanism includes a straightening frame, a straightening pulley, and a second reducer. The straightening pulley is rotatably mounted on the straightening frame via a first rotating shaft. A first synchronous pulley and a second synchronous pulley are coaxially arranged on the first rotating shaft. A first input sprocket is provided at the input end of the second reducer, and a first drive sprocket is provided on the drive shaft. The first drive sprocket is connected to the first input sprocket via a first transmission chain. A first output pulley is provided at the output end of the second reducer, and the first output pulley drives the first synchronous pulley to rotate via a second synchronous belt.

[0010] A cylindrical surface inspection mechanism is used for visual inspection of the cylindrical surface of diodes. The cylindrical surface inspection mechanism includes a rotary wheel drive shaft and rotary wheel units symmetrically arranged on both sides of the conveyor belt. A third synchronous pulley is provided on the rotary wheel drive shaft. The second synchronous pulley is connected to the third synchronous pulley through the third synchronous belt. The rotary wheel unit includes a rotary wheel, a rotary driven gear and an intermediate gear. The rotary wheel drive shaft drives the intermediate gear through the rotary driving gear. The intermediate gear meshes with the rotary driven gear.

[0011] An end-face inspection mechanism is used to perform visual inspection of the end faces of diodes;

[0012] Material feeding mechanism.

[0013] As a further description of the above technical solution:

[0014] The feeding mechanism includes a vibratory feeder, a first belt wheel frame, a first belt wheel, and a first reducer. The diode is placed in the feed trough of the vibratory feeder. The first belt wheel is rotatably mounted on the first belt wheel frame via a first belt wheel shaft. One end of the feed trough extends to the surface of the first belt wheel. The input end of the first reducer is provided with a second input sprocket. The second input sprocket is connected to a second drive sprocket that drives the main shaft via a second transmission chain. The output end of the first reducer is provided with a second output pulley. The second output pulley drives the first belt wheel shaft to rotate via a fourth synchronous belt.

[0015] As a further description of the above technical solution:

[0016] A circular brush wheel is rotatably mounted on the first conveyor belt frame via an axle. The bristles on the end face of the circular brush wheel contact the surface of the first conveyor belt. The axle is connected to the fifth synchronous pulley on the axle of the first conveyor belt via a fifth synchronous belt.

[0017] As a further description of the above technical solution:

[0018] The cylindrical surface inspection mechanism also includes a cylindrical vision camera and a second guide seat. The second guide seat is located inside the conveyor belt, and the cylindrical vision camera is positioned above the second guide seat.

[0019] As a further description of the above technical solution:

[0020] The end face inspection mechanism includes a second conveyor wheel, a third guide seat, a protective arch, a first end face vision camera, and a second end face vision camera. The second conveyor wheel is located at one end of the conveyor chain. The third guide seat is located between the second conveyor wheel and the conveyor chain. A third feeding inclined surface is provided on the third guide seat. Protective arches are symmetrically arranged on both sides of the second conveyor wheel. The first end face vision camera and the second end face vision camera are respectively located on both sides of the second conveyor wheel and are staggered.

[0021] As a further description of the above technical solution:

[0022] The bow guard is fixedly mounted on the piston rod of the drive cylinder.

[0023] As a further description of the above technical solution:

[0024] The feeding mechanism includes a feeding plate and a separation channel. The feeding plate has a notch that matches the shape of the second feeding wheel. The feeding plate is fixedly mounted on the output shaft of the servo motor. The separation channel has a defective product feeding channel and a good product feeding channel. The bottom of the feeding plate extends to the good product feeding channel. The top of the defective product feeding channel is equipped with a fixed feeding plate, which is U-shaped.

[0025] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0026] 1. In this invention, when the appearance inspection device is working, the diodes supplied by the feeding mechanism are conveyed to the straightening mechanism via a conveyor chain and straightened by the straightening wheel. The drive shaft of the drive mechanism drives the second reducer to output power through a transmission module consisting of a first drive sprocket, a first transmission chain, and a first input sprocket. The second reducer drives the straightening wheel to rotate via a second synchronous belt. For the power to straighten the diode leads, the first rotating shaft of the straightening wheel drives the rotating wheel drive shaft in the cylindrical surface inspection mechanism to rotate via a second synchronous pulley and a third synchronous belt, thereby driving the rotating wheel to rotate. This achieves an organic combination of front-end straightening and rear-end visual inspection, effectively simplifying the transmission system of the appearance inspection device. The device has high integration, small footprint, and saves costs.

[0027] 2. In this invention, the drive spindle also drives the first feed roller to rotate through the first reducer, so that the first feed roller can rotate to feed materials. At the same time, the first feed roller drives the circular brush wheel to rotate, which prevents the diodes on the first feed roller from stacking. This improves the quality of diode feeding and further simplifies the transmission system of the appearance inspection device. Attached Figure Description

[0028] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 A schematic diagram of the structure of an electronic component appearance inspection device. Figure 1 .

[0030] Figure 2 A schematic diagram of the structure of an electronic component appearance inspection device. Figure 2 .

[0031] Figure 3 This is a schematic diagram of the feeding mechanism in an electronic component appearance inspection device.

[0032] Figure 4 This is a schematic diagram of the straightening mechanism in an electronic component appearance inspection device.

[0033] Figure 5 This is a schematic diagram of the cylindrical surface inspection mechanism in an electronic component appearance inspection device.

[0034] Figure 6 This is a schematic diagram of the end face inspection mechanism in an electronic component appearance inspection device.

[0035] Figure 7 This is a cross-sectional view of the end face inspection mechanism in an electronic component appearance inspection device.

[0036] Marker explanation:

[0037] 1. Frame; 11. Conveyor chain;

[0038] 2. Drive mechanism; 21. Variable frequency motor; 22. First synchronous belt; 23. Drive spindle; 231. First drive sprocket; 232. Second drive sprocket;

[0039] 3. Feeding mechanism; 31. Vibratory feeder; 311. Feed trough; 32. First belt pulley frame; 33. First belt pulley; 331. First belt pulley shaft; 332. Fifth synchronous pulley; 34. First reducer; 341. Second input sprocket; 342. Second output pulley; 35. Circular brush wheel; 351. Wheel axle;

[0040] 4. Straightening mechanism; 41. Straightening frame; 42. Straightening pulley; 421. Second synchronous pulley; 43. Second reducer; 431. First input sprocket; 432. First output pulley;

[0041] 5. Cylindrical surface inspection mechanism; 51. Rotary wheel drive shaft; 511. Third synchronous belt pulley; 52. Rotary wheel; 53. Rotary driven gear; 54. Intermediate gear; 55. Cylindrical surface vision camera; 56. Second guide seat;

[0042] 6. End face inspection mechanism; 61. Second conveyor wheel; 62. Third guide seat; 63. Protective arch; 64. First end face vision camera; 65. Second end face vision camera; 66. Drive cylinder;

[0043] 7. Feeding mechanism; 71. Feeding plate; 711. Servo motor; 72. Separation channel; 721. Defective product feeding channel; 7211. Fixed feeding plate; 722. Good product feeding channel;

[0044] 9. Diode. Detailed Implementation

[0045] 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 embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0046] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0047] Example 1

[0048] Please see Figure 1-7 The present invention provides a technical solution: an electronic component appearance inspection device, comprising:

[0049] The frame 1 is equipped with a conveyor chain 11 for transporting diodes 9;

[0050] The drive mechanism 2 includes a variable frequency motor 21, a first synchronous belt 22 and a drive spindle 23. The drive spindle 23 is rotatably mounted on the frame 1. The output end of the variable frequency motor 21 drives the drive spindle 23 to rotate through the first synchronous belt 22.

[0051] The feeding mechanism 3 is located at one end of the conveyor chain 11;

[0052] The straightening mechanism 4 includes a straightening frame 41, a straightening pulley 42, and a second reducer 43. The straightening pulley 42 is rotatably mounted on the straightening frame 41 via a first rotating shaft. A first synchronous pulley and a second synchronous pulley 421 are coaxially arranged on the first rotating shaft. A first input sprocket 431 is provided at the input end of the second reducer 43. A first drive sprocket 231 is provided on the drive spindle 23. The first drive sprocket 231 is connected to the first input sprocket 431 via a first transmission chain. A first output pulley 432 is provided at the output end of the second reducer 43. The first output pulley 432 drives the first synchronous pulley to rotate via a second synchronous belt 433.

[0053] Cylindrical surface inspection mechanism 5 is used to visually inspect the cylindrical surface of diode 9. The cylindrical surface inspection mechanism 5 includes a rotary wheel drive shaft 51 and rotary wheel units symmetrically arranged on both sides of the conveyor belt 11. A third synchronous pulley 511 is provided on the rotary wheel drive shaft 51. A second synchronous pulley 421 is connected to the third synchronous pulley 511 through a third synchronous belt 422. The rotary wheel unit includes a rotary wheel 52, a rotary driven gear 53 and an intermediate gear 54. The rotary wheel drive shaft 51 drives the intermediate gear 54 through a rotary driving gear 512. The intermediate gear 54 meshes with the rotary driven gear 53. The rotary driven gear 53 is arranged coaxially with the rotary wheel 52. The rotary wheel 52 contacts the lead wire of diode 9.

[0054] The end face inspection mechanism 6 is used to perform visual inspection on the end face of the diode 9;

[0055] Feeding mechanism 7.

[0056] The feeding mechanism 3 includes a direct vibratory feeder 31, a first belt wheel frame 32, a first belt wheel 33, and a first reducer 34. The diode 9 is placed in the feed trough 311 of the direct vibratory feeder 31. The first belt wheel 33 is rotatably mounted on the first belt wheel frame 32 via the first belt wheel shaft 331. One end of the feed trough 311 extends to the surface of the first belt wheel 33. The input end of the first reducer 34 is provided with a second input sprocket 341. The second input sprocket 341 is connected to the second drive sprocket 232 of the main shaft 23 via a second transmission chain. The output end of the first reducer 34 is provided with a second output pulley 342. The second output pulley 342 drives the first belt wheel shaft 331 to rotate via a fourth synchronous belt.

[0057] In the feed trough 311 of the linear vibrating feeder 31, the diode is conveyed in a straight line into the pulley notch of the first feed roller 33. Through the rotation of the first feed roller 33, it moves to the other side of the first feed roller 33 and falls onto the feed chain 11, thus realizing the feeding of the diode 9.

[0058] The cylindrical surface inspection mechanism 5 also includes a cylindrical vision camera 55 and a second guide seat 56. The second guide seat 56 is disposed inside the conveyor belt 11, and the cylindrical vision camera 55 is positioned above the second guide seat 56. The second guide seat 56 has symmetrically arranged second feeding ramps and second discharging ramps at both ends. When the diode 9 is conveyed to the second guide seat 56 on the conveyor chain 11, the diode 9 moves upward through the second feeding ramp and is no longer placed on the conveyor chain 11, but continues to be driven forward by the conveyor chain 11. The second guide seat 56 has a second arc-shaped concave surface in the middle, and the position of the rotating wheel 52 corresponds to the second arc-shaped concave surface. When the diode 9 is carried by the conveyor chain 11 to the second arc-shaped concave surface, it slides down under the action of gravity. The lead of the diode 9 is no longer pressed against the chain teeth of the conveyor chain 11 and pushed forward. The lead of the diode 9 is still between the two chain teeth, but in the gap when the diode 9 is pressed against the chain teeth again, the lead can be rotated by the rotating wheel 52 to make the diode 9 rotate, and the cylindrical surface visual inspection is completed by the downward-facing cylindrical vision camera 55. The diode 9 then continues to be conveyed, falls back onto the conveyor chain 11 through the second unloading ramp, and disengages from the second guide seat 56.

[0059] In the straightening mechanism 4, a first guide seat is provided below the straightening wheel 42. The structure and working principle of the first guide seat are the same as those of the second guide seat 56. This allows the leads of the diode 9 on the first guide seat to be straightened by the straightening wheel 42.

[0060] The end face inspection mechanism 6 includes a second conveyor wheel 61, a third guide seat 62, a protective arch 63, a first end face vision camera 64, and a second end face vision camera 65. The second conveyor wheel 61 is located at one end of the conveyor chain 11. The third guide seat 62 is located between the second conveyor wheel 61 and the conveyor chain 11. A third feeding inclined surface is provided on the third guide seat 62. Protective arches 63 are symmetrically arranged on both sides of the second conveyor wheel 61. The first end face vision camera 64 and the second end face vision camera 65 are respectively located on both sides of the second conveyor wheel 61 and are staggered.

[0061] When diode 9 is conveyed to end-face inspection mechanism 6 via conveyor chain 11, it is guided by the third feeding ramp of third guide seat 62 into the feeding notch on second conveyor wheel 61. Driven by the divider, second conveyor wheel 61 rotates, causing diode 9 to rotate and pass sequentially through first end-face vision camera 64 and second end-face vision camera 65 for visual inspection of both end faces of diode 9. Arch guard 63 is used for axial positioning of diode 9, and arch guard 63 has notches corresponding to the vision cameras on the same side to avoid affecting the visual inspection of the end face.

[0062] The bow guard 63 is fixedly mounted on the piston rod of the drive cylinder 66, so that the bow guard 63 can be kept away from the second feed wheel 61.

[0063] The feeding mechanism 7 includes a feeding plate 71 and a separation channel 72. The feeding plate 71 has a notch that matches the shape of the second feed wheel 61. The feeding plate 71 is fixedly mounted on the output shaft of the servo motor 711. The separation channel 72 is provided with a defective product feeding channel 721 and a good product feeding channel 722. The bottom of the feeding plate 71 extends to the good product feeding channel 722. The top of the defective product feeding channel 721 is provided with a fixed feeding piece 7211, which is U-shaped.

[0064] When the diode 9 is unloaded from the second conveyor wheel 61, good products are guided by the guide plate 71 and fall down to the good product unloading channel 722. For defective products, the servo motor 711 drives the guide plate 71 to rotate and open the top opening of the defective product unloading channel 721. The second conveyor wheel 61 drives the defective diode 9 through and then resets. When the second conveyor wheel 61 passes through the opening on the fixed guide plate 7211, the defective diode 9 is moved by the fixed guide plate, causing the diode 9 to detach from the second conveyor wheel 61 and fall into the defective product unloading channel 721, thus realizing the sorting and unloading of good and defective products.

[0065] Working Principle: When the appearance inspection device is working, the diodes 9 supplied by the feeding mechanism 3 are conveyed to the straightening mechanism 4 via the conveyor chain 11 and straightened by the straightening wheel 42. The drive shaft 23 of the drive mechanism 2 drives the second reducer 43 to output power through the transmission module composed of the first drive sprocket 231, the first transmission chain, and the first input sprocket 431. The second reducer 43 drives the straightening wheel 42 to rotate through the second synchronous belt 433. For the power to straighten the diode 9 leads, the first rotating shaft of the straightening wheel 42 drives the rotating wheel drive shaft 51 in the cylindrical surface inspection mechanism 5 through the second synchronous belt pulley 421 and the third synchronous belt 422, thereby driving the rotating wheel 52 to rotate. This achieves an organic combination of front-end straightening and rear-end visual inspection, effectively simplifying the transmission system of the appearance inspection device. The device has high integration, small footprint, and saves costs.

[0066] Example 2

[0067] This embodiment further improves upon the above embodiment by providing the following technical solution: A circular brush wheel 35 is rotatably mounted on the first conveyor belt frame 32 via a wheel axle 351. The bristles on the end face of the circular brush wheel 35 contact the surface of the first conveyor belt 33. The wheel axle 351 is connected to the fifth synchronous pulley 332 on the first conveyor belt shaft 331 via a fifth synchronous belt. Simultaneously with the rotation of the first conveyor belt 33, the first conveyor belt shaft 331 drives the circular brush wheel 35 to rotate via the fifth synchronous pulley 332 and the fifth synchronous belt. The bristles on the sidewall of the circular brush wheel 35 block objects extending beyond the side surface of the first conveyor belt 33.

[0068] The drive spindle 23 also drives the first feed roller 33 to rotate through the first reducer 34, so that the first feed roller 33 can rotate to feed material. At the same time, the first feed roller 33 drives the circular brush wheel 35 to rotate, which prevents the diodes 9 from stacking on the first feed roller 33, improves the feeding quality of the diodes 9, and further simplifies the transmission system of the appearance inspection device.

[0069] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An electronic component appearance inspection device, characterized in that, include: A frame on which a conveyor belt for transporting diodes is installed; The drive mechanism includes a variable frequency motor, a first synchronous belt, and a drive spindle. The drive spindle is rotatably mounted on the frame, and the output end of the variable frequency motor drives the drive spindle to rotate through the first synchronous belt. A feeding mechanism is located at one end of the conveyor chain; A straightening mechanism includes a straightening frame, a straightening pulley, and a second reducer. The straightening pulley is rotatably mounted on the straightening frame via a first rotating shaft. A first synchronous pulley and a second synchronous pulley are coaxially arranged on the first rotating shaft. A first input sprocket is provided at the input end of the second reducer. A first drive sprocket is provided on the drive shaft. The first drive sprocket is connected to the first input sprocket via a first transmission chain. A first output pulley is provided at the output end of the second reducer. The first output pulley drives the first synchronous pulley to rotate via a second synchronous belt. A cylindrical surface inspection mechanism is used to perform visual inspection on the cylindrical surface of the diode. The cylindrical surface inspection mechanism includes a rotary wheel drive shaft and rotary wheel units symmetrically arranged on both sides of the conveyor belt. A third synchronous pulley is provided on the rotary wheel drive shaft, and a second synchronous pulley is connected to the third synchronous pulley via a third synchronous belt. The rotary wheel unit includes a rotary wheel, a driven gear, and an intermediate gear. The rotary wheel drive shaft drives the intermediate gear via a driving gear, and the intermediate gear meshes with the driven gear. An end-face inspection mechanism is used to perform visual inspection on the end face of the diode; Feeding mechanism; The feeding mechanism includes a vibratory feeder, a first belt wheel frame, a first belt wheel, and a first reducer. A diode is placed in the feed trough of the vibratory feeder. The first belt wheel is rotatably mounted on the first belt wheel frame via a first belt wheel shaft. One end of the feed trough extends to the surface of the first belt wheel. A second input sprocket is provided at the input end of the first reducer. The second input sprocket is connected to the second drive sprocket of the drive spindle via a second transmission chain. A second output pulley is provided at the output end of the first reducer. The second output pulley drives the first belt wheel shaft to rotate via a fourth synchronous belt. The end face inspection mechanism includes a second conveyor wheel, a third guide seat, a protective arch, a first end face vision camera, and a second end face vision camera. The second conveyor wheel is disposed at one end of the conveyor chain. The third guide seat is disposed between the second conveyor wheel and the conveyor chain. The third guide seat is provided with a third feeding inclined surface. The protective arches are symmetrically arranged on both sides of the second conveyor wheel. The first end face vision camera and the second end face vision camera are respectively disposed on both sides of the second conveyor wheel and are staggered.

2. The electronic component appearance inspection device according to claim 1, characterized in that, A circular brush wheel is rotatably mounted on the first conveyor belt frame via an axle. The bristles on the end face of the circular brush wheel contact the surface of the first conveyor belt. The axle is connected to the fifth synchronous pulley on the axle of the first conveyor belt via a fifth synchronous belt.

3. The electronic component appearance inspection device according to claim 1, characterized in that, The cylindrical surface detection mechanism further includes a cylindrical vision camera and a second guide seat. The second guide seat is disposed inside the conveyor belt, and the cylindrical vision camera is positioned above the second guide seat.

4. The electronic component appearance inspection device according to claim 1, characterized in that, The bow guard is fixedly mounted on the piston rod of the drive cylinder.

5. The electronic component appearance inspection device according to claim 1, characterized in that, The feeding mechanism includes a feeding plate and a separation channel. The feeding plate has a notch that matches the shape of the second feeding wheel. The feeding plate is fixedly mounted on the output shaft of the servo motor. The separation channel has a defective product feeding channel and a good product feeding channel. The bottom of the feeding plate extends to the good product feeding channel. The top of the defective product feeding channel is provided with a fixed feeding piece, which is U-shaped.

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