A circuit board optical inspection machine

Abstract

The present invention relates to the field of circuit board detection technology, and in particular to a circuit board optical detection machine, comprising two symmetrically placed main plates, the inner side surfaces of the two main plates being provided with a transmission mechanism, the upper ends of the two main plates being provided with a bending detection mechanism, the two bending detection mechanisms comprising two fourth limit grooves opened on the upper ends of the main plates, the two main plates being slidably connected to limit blocks in the fourth limit grooves respectively, the upper ends of the two limit blocks being fixedly connected to a first electric telescopic rod respectively, the telescopic ends of the two first electric telescopic rods being fixedly connected to a first fixed body; the sixth electric telescopic rod is extended according to the curvature of the circuit board, and at the same time the two third electric telescopic rods are extended, so that the flexible circuit board is bent in the first limit groove to the curvature during installation, thereby performing detection according to the curvature of the flexible circuit board when it is installed, thereby accurately detecting bubbles and other impurities inside the circuit board during installation.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit board detection, and in particular to a circuit board optical detection machine. Background Art

[0002] Optical inspection of circuit boards usually refers to the use of optical principles and related equipment to inspect circuit boards to detect possible defects on the circuit boards, such as short circuits, open circuits, missing components, offsets, etc., while X-ray inspection of circuit boards is currently a commonly used inspection technology. Existing X-ray inspection technology generally places the circuit board on a conveyor belt during inspection, which drives the circuit board to the bottom of the detector for inspection. Before inspection, the surface of the circuit board is cleaned manually or by machine.

[0003] For flexible circuit boards, they are generally installed at a certain curvature during installation. However, existing X-ray detectors cannot fix the flexible circuit boards according to the installation curvature during detection, resulting in some bubbles and other impurities in the circuit boards not being detected due to plane extrusion, thereby reducing the quality of the flexible circuit boards. Existing X-ray detection devices cannot clean the surface of the circuit boards during detection, and existing X-ray detection devices cannot adjust the clamping for circuit boards of different widths, resulting in low applicability. Summary of the Invention

[0004] The purpose of the present invention is to solve the shortcomings of the background technology and to propose a circuit board optical inspection machine.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is: a circuit board optical inspection machine, comprising two symmetrically placed main body plates, the inner side surfaces of the two main body plates are provided with a transmission mechanism, the upper ends of the two main body plates are provided with a bending detection mechanism, the two bending detection mechanisms include two fourth limit grooves opened on the upper ends of the main body plates, the two main body plates are respectively slidably connected to the limit blocks in the fourth limit grooves, the upper ends of the two limit blocks are respectively fixedly connected to the first electric telescopic rods, the telescopic ends of the two first electric telescopic rods are fixedly connected to the first fixed body, the lower end of the first fixed body is provided with a first limit groove, and the inner side surfaces of the two main body plates are connected to the support mechanism.

[0006] Preferably, the symmetrical sides of the first fixed body are respectively provided with second placement grooves, the first fixed body is respectively fixedly connected to the third electric telescopic rod in the second placement groove, the telescopic ends of the two third electric telescopic rods are respectively fixedly connected to the third motor, the transmission shaft ends of the two third motors are respectively fixedly connected to the U-shaped body, the fourth electric telescopic rod is respectively fixedly connected between the upper and lower plates of the two U-shaped bodies, the telescopic ends of the four fourth electric telescopic rods are respectively fixedly connected to the extrusion plate, the main body plate is respectively fixedly connected to the fourth motor in the fourth limiting groove, the transmission shaft ends of the two fourth motors are respectively fixedly connected to the second threaded rod, and the side surfaces of the two second threaded rods are respectively arranged with the limiting blocks by threaded cooperation.

[0007] Preferably, a third limiting groove is provided on one side of the first fixed body, the first fixed body is fixedly connected to the second motor in the third limiting groove, the transmission shaft end of the second motor is fixedly connected to the first threaded rod, and the side of the first threaded rod is connected to several second fixed bodies.

[0008] Preferably, the side surfaces of several second fixed bodies are respectively penetrated by first through holes, several second fixed bodies are respectively connected with fixing rings in the first through holes, the side surfaces of several said fixing rings are respectively provided with several second limiting grooves distributed at equal angles, several second limiting grooves are respectively fixedly connected with second electric telescopic rods, and the telescopic ends of several second electric telescopic rods are respectively fixedly connected with anti-slip plates.

[0009] Preferably, several sides of the fixing rings are penetrated by threaded grooves that cooperate with the first threaded rod, several sides of the second fixing bodies are respectively connected to the sixth electric telescopic rod, and several first placement grooves arranged at equal angles are opened on the side of the first fixing body, and the first fixing body is fixedly connected to the reflectors in the several first placement grooves.

[0010] Preferably, the support mechanism includes a fixing plate fixedly arranged on the inner side surfaces of the two main body plates, a fifth limiting groove is opened at the upper end of the fixing plate, the fixing plate is fixedly connected to the fifth motor in the fifth limiting groove, the transmission shaft end of the fifth motor is fixedly connected to the third threaded rod, the side surface of the third threaded rod is composed of two sections of threads with opposite rotation directions, and the side surface of the third threaded rod is provided with two symmetrically arranged guide bodies through threaded cooperation.

[0011] Preferably, the upper ends of the two guide bodies are respectively fixedly connected with the fifth electric telescopic rod, the telescopic ends of the two fifth electric telescopic rods are respectively fixedly connected with the fixed shells, the upper ends of the two fixed shells are open structures, the sides of the two fixed shells are respectively fixedly connected with partitions, the end faces of the two partitions are respectively fixedly connected with air pumps, the lower ends of the two fixed shells are respectively provided with a number of air outlet holes distributed at equal angles, the upper ends of the two fixed shells are respectively provided with annular grooves, and flexible rings are respectively fixedly connected in the two annular grooves.

[0012] Preferably, the transmission mechanism includes two fixed rods fixedly connected to the inner side surface of the main body plate, the sides of the two fixed rods are rotatably connected to transmission rollers, the sides of the two transmission rollers are tightly connected to conveyor belts, the sides of the conveyor belt are provided with a number of empty grooves arranged at equal distances, the sides of the two transmission rollers are rotatably connected to anti-slip wheels, the side of the main body plate is fixedly connected to a first motor, the transmission shaft end of the first motor is a circular ring structure, the transmission shaft end of the first motor is fixedly connected to a transmission roller, and the lower ends of the two main bodies are symmetrically connected to support columns.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The third threaded rod cooperates to drive the two guide bodies to move to the appropriate position, so that circuit boards of different lengths can be supported. Then the fifth electric telescopic rod extends, and the fifth electric telescopic rod drives the two fixed shells to move to the lower end surface of the circuit board. Then the air pump is started, so that the pressure inside the flexible ring clamps and limits the circuit board, avoiding squeezing on the side of the circuit board and improving the reliability of the device.

[0015] 2. The sixth electric telescopic rod extends according to the curvature of the circuit board, and a laser receiving plate is provided at the telescopic end of the sixth electric telescopic rod. At the same time, the two third electric telescopic rods extend, so that the flexible circuit board is bent in the first limit groove to the curvature during installation. After that, several reflectors are activated to detect the curvature of the flexible circuit board during installation, thereby accurately detecting bubbles and other impurities inside the circuit board during installation, thereby improving the quality of the flexible circuit board.

[0016] 3. The fifth motor rotates continuously forward and reverse, and drives the two guide bodies to move back and forth through the third threaded rod. While moving, the two fixed shells can blow away dust and other impurities on the sides of the circuit board, and a filter is set in the air outlet on the end face of the fixed shell to improve the efficiency of flexible circuit board detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2The present invention is a sectional view of the whole Figure 1 ;

[0019] Figure 3 Partial cross-sectional structure of the present invention Figure 1 ;

[0020] Figure 4 Partial cross-sectional structure of the present invention Figure 2 ;

[0021] Figure 5 Partial cross-sectional structure of the present invention Figure 2 ;

[0022] Figure 6 For the present invention Figure 2 A magnified view of point A;

[0023] Figure 7 For the present invention Figure 2 Enlarged view of point B;

[0024] Figure 8 For the present invention Figure 3 Enlarged view of point C;

[0025] Figure 9 For the present invention Figure 4 Enlarged view of point D;

[0026] Figure 10 For the present invention Figure 4 Enlarged view of point E.

[0027] 1. Main plate; 2. Transmission mechanism; 3. Bending detection mechanism; 4. Support mechanism; 11. Support column; 21. Conveyor belt; 22. Empty slot; 23. Fixing rod; 24. Transmission roller; 25. Anti-slip pulley; 26. First motor; 31. First electric telescopic rod; 32. First fixed body; 33. First limiting groove; 34. Second fixed body; 35. First through hole; 36. Fixing ring; 37. Second limiting groove; 38. Second electric telescopic rod; 39. Anti-slip plate; 310. Sixth electric telescopic rod; 311. Third limiting groove; 312. Second motor; 313. First threaded rod; 314. First placement slot; 315, reflector; 316, second placement slot; 317, third electric telescopic rod; 318, third motor; 319, U-shaped body; 320, extrusion plate; 321, fourth electric telescopic rod; 322, limit block; 323, fourth motor; 324, second threaded rod; 325, fourth limit slot; 41, fixing plate; 42, fifth limit slot; 43, third threaded rod; 44, fifth motor; 45, guide body; 46, fifth electric telescopic rod; 47, fixing shell; 48, air outlet; 49, partition; 410, air pump; 411, annular groove; 412, flexible ring. DETAILED DESCRIPTION

[0028] The following description is intended to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are merely examples, and those skilled in the art may conceive of other obvious variations.

[0029] See also Figures 1-10 A circuit board optical inspection machine includes two symmetrically placed main plates 1, and a transmission mechanism 2 is provided on the inner side surfaces of the two main plates 1.

[0030] In this embodiment, the transmission mechanism 2 includes two fixed rods 23 fixedly connected to the inner side surface of the main body plate 1, the sides of the two fixed rods 23 are rotatably connected to the transmission rollers 24, the sides of the two transmission rollers 24 are fastened to the conveyor belt 21, and the side of the conveyor belt 21 is provided with a plurality of empty grooves 22 arranged at equal distances, the sides of the two transmission rollers 24 are respectively rotatably connected to the anti-slip wheels 25, the side of the main body plate 1 is fixedly connected to the first motor 26, the transmission shaft end of the first motor 26 is a circular ring structure, the transmission shaft end of the first motor 26 is fixedly connected to a transmission roller 24, and the lower ends of the two main bodies 1 are symmetrically connected to the support columns 11.

[0031] Specifically, the first motor 26 drives a transmission roller 24 to rotate, and the transmission roller 24 drives the conveyor belt 21 to rotate. Then, the long flexible circuit board is placed on the conveyor belt 21. The empty groove 22 on the end face of the conveyor belt 21 is slightly smaller than the cross section of the circuit board.

[0032] In this embodiment, a bending detection mechanism 3 is provided at the upper ends of the two main plates 1. The two bending detection mechanisms 3 include two fourth limiting grooves 325 opened at the upper ends of the main plates 1. The two main plates 1 are respectively slidably connected to the limiting blocks 322 in the fourth limiting grooves 325. The upper ends of the two limiting blocks 322 are respectively fixedly connected to the first electric telescopic rods 31. The telescopic ends of the two first electric telescopic rods 31 are fixedly connected to the first fixed body 32. The lower end of the first fixed body 32 is provided with a first limiting groove 33.

[0033] The symmetrical sides of the first fixed body 32 are respectively provided with second placement grooves 316, and the first fixed body 32 is respectively fixedly connected to the third electric telescopic rod 317 in the second placement groove 316, and the telescopic ends of the two third electric telescopic rods 317 are respectively fixedly connected to the third motor 318, and the transmission shaft ends of the two third motors 318 are respectively fixedly connected to the U-shaped body 319, and the fourth electric telescopic rod 321 is respectively fixedly connected between the upper and lower plates of the two U-shaped bodies 319, and the telescopic ends of the four fourth electric telescopic rods 321 are respectively fixedly connected to the extrusion plate 320, and the main body plate 1 is respectively fixedly connected to the fourth motor 323 in the fourth limiting groove 325, and the transmission shaft ends of the two fourth motors 323 are respectively fixedly connected to the second threaded rod 324, and the side surfaces of the two second threaded rods 324 are respectively threadedly matched with the limit blocks 322.

[0034] A third limiting groove 311 is formed on one side of the first fixing body 32, and the first fixing body 32 is fixedly connected to the second motor 312 in the third limiting groove 311. The transmission shaft end of the second motor 312 is fixedly connected to the first threaded rod 313, and the side of the first threaded rod 313 is connected to several second fixing bodies 34.

[0035] The sides of several second fixed bodies 34 are respectively penetrated by first through holes 35, and several second fixed bodies 34 are respectively connected to fixing rings 36 in the first through holes 35. The sides of several said fixing rings 36 are respectively provided with several second limiting grooves 37 distributed at equal angles, and several second electric telescopic rods 38 are respectively fixedly connected in the second limiting grooves 37, and the telescopic ends of several second electric telescopic rods 38 are respectively fixedly connected to anti-slip plates 39.

[0036] The sides of several of the fixing rings 36 are penetrated by threaded grooves that cooperate with the first threaded rod 313, the sides of several of the second fixing bodies 34 are respectively connected to the sixth electric telescopic rod 310, and the side of the first fixing body 32 is provided with several first placement grooves 314 arranged at equal angles, and the first fixing body 32 is fixedly connected to the reflectors 315 in the several first placement grooves 314.

[0037] Specifically, the two third electric telescopic rods 317 drive the U-shaped body 319 to move toward the end of the circuit board. Then, the fourth electric telescopic rod 321 extends, driving the extrusion plate 320 to squeeze and fix the end of the circuit board. Then, the two third motors 318 rotate 90°, the second motor 312 is started, and the second electric telescopic rod 38 extends. At this time, the second motor 312 cooperates to drive the multiple second fixed bodies 34 to move to the predetermined position.

[0038] In this embodiment, the inner side surfaces of the two main body plates 1 are connected with a supporting mechanism 4 .

[0039] The support mechanism 4 includes a fixing plate 41 fixedly arranged on the inner side surfaces of the two main body plates 1, and a fifth limiting groove 42 is provided at the upper end of the fixing plate 41. The fixing plate 41 is fixedly connected to a fifth motor 44 in the fifth limiting groove 42, and the transmission shaft end of the fifth motor 44 is fixedly connected to a third threaded rod 43. The side surface of the third threaded rod 43 is composed of two sections of threads with opposite rotation directions, and the side surface of the third threaded rod 43 is provided with two symmetrically arranged guide bodies 45 through threaded cooperation.

[0040] The upper ends of the two guide bodies 45 are respectively fixedly connected with the fifth electric telescopic rod 46, and the telescopic ends of the two fifth electric telescopic rods 46 are respectively fixedly connected with the fixed shells 47. The upper ends of the two fixed shells 47 are open structures, and the sides of the two fixed shells 47 are respectively fixedly connected with partitions 49, and the end faces of the two partitions 49 are respectively fixedly connected with air pumps 410. The lower ends of the two fixed shells 47 are respectively provided with a number of air outlet holes 48 distributed at equal angles, and the upper ends of the two fixed shells 47 are respectively provided with annular grooves 411, and flexible rings 412 are respectively fixedly connected in the two annular grooves 411.

[0041] Specifically, the third threaded rod 43 cooperates to drive the two guide bodies 45 to move to the appropriate position, so that circuit boards of different lengths can be supported. Then, the fifth electric telescopic rod 46 extends, and the fifth electric telescopic rod 46 drives the two fixed shells 47 to move to the lower end surface of the circuit board. Then, the air pump 410 is started, so that the pressure inside the flexible ring 412 clamps and limits the circuit board, avoiding squeezing of the side of the circuit board and improving the reliability of the device.

[0042] During use, the first motor 26 is started, and the first motor 26 drives a transmission roller 24 to rotate, and the transmission roller 24 drives the conveyor belt 21 to rotate, and then the long flexible circuit board is placed on the conveyor belt 21. The empty slot 22 on the end face of the conveyor belt 21 is slightly smaller than the cross-section of the circuit board. When the empty slot 22 moves to above the support mechanism 4, the first motor 26 stops rotating. At this time, the fifth motor 44 drives the third threaded rod 43 to rotate, and the third threaded rod 43 cooperates to drive the two guide bodies 45 to move to the appropriate position, so that circuit boards of different lengths can be supported. After that, the fifth electric telescopic rod 46 is extended, and the fifth electric telescopic rod 46 drives the two fixed shells 47 to move to the lower end face of the circuit board. After that, the air pump 410 is started, so that the circuit board is clamped and limited by the pressure inside the flexible ring 412, avoiding squeezing of the side of the circuit board and improving the reliability of the device.

[0043] When the two fifth electric telescopic rods 46 drive the circuit board into the first limiting groove 33 and are parallel to the U-shaped body 319, the two third electric telescopic rods 317 are simultaneously extended, and the two third electric telescopic rods 317 drive the U-shaped body 319 to move toward the end of the circuit board. Then, the fourth electric telescopic rod 321 is extended, driving the squeezing plate 320 to squeeze and fix the end of the circuit board. Then, the two third motors 318 rotate 90 degrees, and the second motor 312 is activated, and the second electric telescopic rod 38 is extended. At this time, the second motor 312 cooperates to drive the plurality of second fixing bodies 34 to a predetermined position. Then, the sixth electric telescopic rod 310 is extended according to the curvature of the circuit board. The telescopic end of the sixth electric telescopic rod 310 is provided with a laser receiving plate. At the same time, the two third electric telescopic rods 317 are extended, causing the flexible circuit board to bend within the first limiting groove 33 to the curvature during installation. Then, the plurality of reflectors 315 are activated to detect the curvature of the flexible circuit board during installation, thereby accurately detecting bubbles and other impurities inside the circuit board during installation, thereby improving the quality of the flexible circuit board.

[0044] Before testing, the two U-shaped bodies 319 fix the two ends of the circuit board. At this time, the two fifth electric telescopic rods 46 are retracted a certain distance, and the two air pumps 410 blow air upward. The fifth motor 44 continues to rotate forward and reverse. The fifth motor 44 drives the two guide bodies 45 to move back and forth through the third threaded rod 43. While moving, the two fixed shells 47 can blow away dust and other impurities on the side of the circuit board, and a filter is provided in the air outlet 48 on the end face of the fixed shell 47 to improve the efficiency of flexible circuit board testing.

[0045] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions merely illustrate the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A circuit board optical inspection machine, comprising two symmetrically placed main plates (1), characterized in that: The inner side surfaces of the two main body plates (1) are provided with a transmission mechanism (2), the upper ends of the two main body plates (1) are provided with a bending detection mechanism (3), the two bending detection mechanisms (3) include two fourth limiting grooves (325) provided on the upper ends of the main body plates (1), the two main body plates (1) are respectively slidably connected to the limiting blocks (322) in the fourth limiting grooves (325), the upper ends of the two limiting blocks (322) are respectively fixedly connected to the first electric telescopic rods (31), and the two first electric telescopic rods (31) are respectively fixedly connected to the first electric telescopic rods (31). 1) is fixedly connected to a first fixed body (32), a first limiting groove (33) is provided at the lower end of the first fixed body (32), the inner side surfaces of the two main body plates (1) are connected to a support mechanism (4), a third limiting groove (311) is provided on one side surface of the first fixed body (32), the first fixed body (32) is fixedly connected to a second motor (312) in the third limiting groove (311), a transmission shaft end of the second motor (312) is fixedly connected to a first threaded rod (313), the first The side of the threaded rod (313) is connected to a plurality of second fixing bodies (34), the side of the plurality of second fixing bodies (34) is respectively penetrated by a first through hole (35), the plurality of second fixing bodies (34) are respectively connected to a fixing ring (36) in the first through hole (35), the side of the plurality of fixing rings (36) are respectively provided with a plurality of second limiting grooves (37) distributed at equal angles, the second electric telescopic rods (38) are respectively fixedly connected in the plurality of second limiting grooves (37), and the plurality of second electric telescopic rods (38) are respectively fixedly connected in the plurality of second limiting grooves (37). The telescopic ends of the telescopic rod (38) are respectively fixedly connected to the anti-slide plate (39); the side surfaces of several of the fixing rings (36) are penetrated by thread grooves that cooperate with the first threaded rod (313); the side surfaces of several of the second fixing bodies (34) are respectively connected to the sixth electric telescopic rod (310); the side surfaces of the first fixing body (32) are provided with several first placement grooves (314) arranged at equal angles; the first fixing body (32) is fixedly connected to reflectors (315) in the several first placement grooves (314).

2. The circuit board optical inspection machine according to claim 1, characterized in that: The symmetrical side surfaces of the first fixed body (32) are respectively provided with second placement grooves (316); the first fixed body (32) is respectively fixedly connected to a third electric telescopic rod (317) in the second placement grooves (316); the telescopic ends of the two third electric telescopic rods (317) are respectively fixedly connected to a third motor (318); the transmission shaft ends of the two third motors (318) are respectively fixedly connected to a U-shaped body (319); the upper and lower plates of the two U-shaped bodies (319) are respectively fixedly connected to a fourth electric telescopic rod (321); the telescopic ends of the four fourth electric telescopic rods (321) are respectively fixedly connected to an extrusion plate (320); the main body plate (1) is respectively fixedly connected to a fourth motor (323) in a fourth limiting groove (325); the transmission shaft ends of the two fourth motors (323) are respectively fixedly connected to a second threaded rod (324); and the side surfaces of the two second threaded rods (324) are respectively provided with a limiting block (322) by threaded engagement.

3. The circuit board optical inspection machine according to claim 1, characterized in that: The support mechanism (4) comprises a fixing plate (41) fixedly arranged on the inner side surfaces of the two main body plates (1), a fifth limiting groove (42) is provided at the upper end of the fixing plate (41), a fifth motor (44) is fixedly connected to the fixing plate (41) in the fifth limiting groove (42), a transmission shaft end of the fifth motor (44) is fixedly connected to a third threaded rod (43), a side surface of the third threaded rod (43) is composed of two sections of threads with opposite rotation directions, and two symmetrically arranged guide bodies (45) are provided on the side surface of the third threaded rod (43) through threaded engagement.

4. The circuit board optical inspection machine according to claim 3, characterized in that: The upper ends of the two guide bodies (45) are respectively fixedly connected to a fifth electric telescopic rod (46), and the telescopic ends of the two fifth electric telescopic rods (46) are respectively fixedly connected to a fixed shell (47). The upper ends of the two fixed shells (47) are open structures, and the sides of the two fixed shells (47) are respectively fixedly connected to a partition (49), and the end faces of the two partitions (49) are respectively fixedly connected to an air pump (410). The lower ends of the two fixed shells (47) are respectively provided with a plurality of air outlet holes (48) distributed at equal angles. The upper ends of the two fixed shells (47) are respectively provided with an annular groove (411), and the two annular grooves (411) are respectively fixedly connected to a flexible ring (412).

5. The circuit board optical inspection machine according to claim 1, characterized in that: The transmission mechanism (2) includes two fixed rods (23) fixedly connected to the inner side surface of the main body plate (1), the sides of the two fixed rods (23) are rotatably connected to the transmission rollers (24), the sides of the two transmission rollers (24) are tightly connected to the conveyor belt (21), the side of the conveyor belt (21) is provided with a plurality of empty slots (22) arranged at equal distances, the sides of the two transmission rollers (24) are respectively rotatably connected to the anti-slip wheels (25), the side of the main body plate (1) is fixedly connected to the first motor (26), the transmission shaft end of the first motor (26) is a circular ring structure, the transmission shaft end of the first motor (26) is fixedly connected to a transmission roller (24), and the lower ends of the two main body plates (1) are symmetrically connected to the support columns (11).

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