CN110849878B

CN110849878B - AOI detection device of PCB board

Info

Publication number: CN110849878B
Application number: CN201911137836.5A
Authority: CN
Inventors: 孔繁源; 陈定康
Original assignee: Hubei Zhongwei Xiehe Automation Equipment Technology Co ltd
Current assignee: Hubei Zhongwei Xiehe Automation Equipment Technology Co ltd
Priority date: 2019-11-20
Filing date: 2019-11-20
Publication date: 2022-08-05
Anticipated expiration: 2039-11-20
Also published as: CN110849878A

Abstract

The invention provides an AOI detection device of a PCB, which comprises a frame body, wherein the frame body comprises side plates which are arranged at intervals relatively, a transportation channel is formed between the side plates, a feeding port and a discharging port are formed in two ends of the transportation channel along the transportation direction, a clamping plate is arranged at the top of each side plate, a plurality of transmission roller mechanisms which are uniformly distributed along the transportation direction are arranged on each side plate, each transmission roller mechanism comprises at least two rolling wheels for transportation, a first motor drives the rolling wheels to rotate, and the transmission roller mechanisms are in two working states of horizontal rolling transportation and inclined lifting through rotation of a second motor. The invention provides a detection device which can decelerate in advance, has simple instruction of a conveying device and high detection efficiency and is not easy to damage a circuit board.

Description

AOI detection device of PCB board

Technical Field

The invention relates to the technical field of printed circuit board detection, in particular to an AOI detection device of a PCB.

Background

The automatic optical inspection (aoi) refers to acquiring an image of an object to be inspected by using an optical imaging technology (usually using a camera and a lens), and acquiring information such as the size, position, direction, spectral characteristics, structure, defects and the like of the object from the captured image by using a certain image processing algorithm, so that tasks such as inspection of products, identification and positioning of parts on an assembly line, measurement in process monitoring, process control feedback, classification, grouping and the like can be performed. At present, AOI is widely applied to various industries such as semiconductors, industrial robots, automobile part manufacturing, printing, steel, medical treatment, medicine and the like.

Present grant No. CN208377856U, the name is "automatically, go up china utility model patent of unloading carousel formula configuration AOI detection silk screen printing machine" discloses an automatic unloading carousel formula configuration AOI detection silk screen printing machine, including material loading subassembly, transfer robot subassembly, carousel subassembly, AOI detection components, rotatory swing arm subassembly, NG product conveying mechanism subassembly, go up the rotation swing arm subassembly that the material loading carousel formula was joined in marriage on the AOI detection device, 2 axle drives altogether, arbitrary angle is got and is put the product, but the carousel formula is carried, the PCB board rotates easily, the accuracy is not high, be not convenient for follow-up AOI optical influence machine detects the scanning to the fixed point.

Therefore, it is necessary to design an AOI detection apparatus for a PCB, which has high detection accuracy, convenient and stable material feeding and discharging, high product consistency and simple structure.

Disclosure of Invention

The invention aims to provide a detection device which can decelerate in advance, has simple instruction of a conveying device and high detection efficiency and is not easy to damage a circuit board.

The technical purpose of the invention is realized by the following technical scheme: the utility model provides an AOI detection device of PCB board, includes the support body, the support body includes the curb plate that relative interval set up, constitute the transport passageway between the curb plate, the transport passageway is pan feeding mouth and discharge gate along the direction of transportation both ends, and the curb plate top is provided with splint, the curb plate is provided with a plurality of transmission roller mechanism along the direction of transportation equipartition, transmission roller mechanism includes at least two rolling wheels that are used for the transportation, and a motor drive rolling wheel rotates, transmission roller mechanism lifts up two kinds of operating condition for horizontal rolling transportation and slope by the rotation of motor two.

Through adopting above-mentioned technical scheme, the side on both sides constitutes the transportation channel of transportation PCB board, the PCB board is followed pan feeding mouth pan feeding, transmit through transmission roller mechanism, from the discharge gate ejection of compact, in the in-process of transportation, the gyro wheel in the transmission roller mechanism is rotated the horizontal transportation that is used for the PCB board by the drive of motor one, when needs press from both sides tightly the PCB board, motor two rotates, the gyro wheel in the transmission roller mechanism is rotatory to the slope by horizontal roll transportation state and is lifted the state, the gyro wheel breaks away from the drive effect of motor one, press from both sides tight fixed to the PCB board, carry out AOI high accuracy high speed video camera to the PCB board and detect and compare, after the detection, motor two rotates the antiport, make the gyro wheel reply horizontal state, the gyro wheel receives the drive effort of motor one to rotate, resume the horizontal transmission of PCB board, discharge at the discharge gate.

The conveying roller mechanism comprises a speed reducing roller mechanism, the speed reducing roller mechanism is arranged at one end close to the discharge hole, the speed reducing roller mechanism is driven to rotate by a motor III, the speed reducing roller mechanism comprises a speed reducing rolling wheel, the speed reducing rolling wheel is driven to rotate by a motor IV, and the rotation direction of the motor IV is opposite to that of the motor I.

Through above-mentioned technical scheme, speed reduction gyro wheel mechanism can evenly slow down the PCB board of high-speed transmission to speed reduction gyro wheel is by gear motor independent control, and the speed reduction rolls for mechanical gyro wheel in the time need not slowing down, along with the transportation atress roll of PCB board, does not hinder the high-speed transmission of PCB board, when needs slow down to the PCB board, three drive speed reduction gyro wheels of motor rotate, effectively reduce the speed of PCB board, need not reduce the normal rotation rate of other transmission gyro wheels, convenient operation.

The conveying roller mechanism further comprises a support frame, a round hole is formed in the center of the support frame, the rotating shaft penetrates through the round hole and is fixedly connected with the support frame, the second motor drives the rotating shaft to rotate, a plurality of rolling wheels with rotating planes on the same plane are uniformly arranged on the support frame along the circumferential direction of the round hole, and the first motor drives the rolling wheels to rotate.

The transmission roller mechanism is in a horizontal rolling transportation working state when the rolling wheel is in a horizontal position, the driving gear is disengaged from the driven gear when the rolling wheel is driven to an inclined position, and the transmission rolling mechanism is in an inclined lifting working state.

By adopting the technical scheme, when the rolling wheel is in a horizontal position, the driving gear is meshed with the driven gear, the first motor drives the roller to rotate to transport the PCB, the second motor drives the rolling wheel to rotate to an inclined position, the driven gear on the transmission rod is disengaged from the driving gear, the rolling wheel is disengaged from the driving action of the second motor, and an inclined and lifted clamping working state is formed.

As a further development of the invention, two rolling wheels are provided.

By adopting the technical scheme, when two rolling wheels are arranged, the centers of the rolling wheels and the center of the round hole are positioned on the same straight line, and when the two rolling wheels are positioned horizontally, the driven gear of the transmission rod is meshed with the driving gear, so that the transmission of the PCB is realized; when the rolling wheel is driven by the second motor to rotate to the vertical state, the driven gear is separated from the transmission of the second motor, and the lifting is realized. When four rolling wheels are arranged, and the adjacent rolling wheels are in a horizontal state, the driven gear of the transmission rod is meshed with the driving gear, so that the transmission of the PCB is realized; when the rolling wheel of the motor-driven diagonal line is in a vertical state, the driven gear of the rolling wheel is disengaged, and the PCB is lifted and clamped.

As a further arrangement of the invention, the driven gear comprises driven variable gears with different diameters, the driving gear comprises a driving variable gear meshed with the driven variable gear, the first motor is fixedly connected with the rolling rotating shaft through a fixing sleeve, an adjusting groove is formed in the side plate along the axial direction of the rolling rotating shaft, a baffle is arranged in the adjusting groove along the axial direction, a square groove is formed in the baffle, and a limiting block corresponding to the square groove is arranged on the fixing sleeve.

By adopting the technical scheme, the driven gears with different diameters on the axis can be switched by the stop blocks at different positions along the axis, so that the adjustment of different transmission speeds is realized, and the practicability of the device is improved.

As a further arrangement of the invention, one side of the transmission roller mechanism close to the discharge hole is provided with a stop piece, the stop piece is driven by a driving device or is higher than or lower than the plane of the highest point of the transmission roller mechanism, a T-shaped block is arranged on the stop piece and is clamped with a T-shaped sliding groove extending along the vertical direction on the side plate, the stop piece slides along the T-shaped sliding groove, and the bottom of the stop piece is connected with the working end of the driving device.

As a further development of the invention, the drive is a push rod or a pneumatic cylinder.

Through adopting above-mentioned technical scheme, push rod or cylinder promote the backstop piece backstop PCB board or do not backstop the PCB board.

As a further arrangement of the invention, the device also comprises a first sensor, wherein the first sensor is fixedly connected with the side plate, and is arranged on the transportation channel, and the first sensor is close to the discharge hole.

The device further comprises a second sensor, wherein the second sensor is fixedly connected with the side plate, the first sensor is arranged on the transportation channel, and the second sensor is arranged on the rear side of the first photoelectric sensor along the transportation direction.

Through adopting above-mentioned technical scheme, sensor one is used for responding to whether the PCB board transmits to the relevant position who is close to the stop part, and the sensor is used for responding to whether the PCB board is by the stop part backstop, and when sensor one was sheltered from, the three drive of motor rotated with the reduction gyro wheel that the wheel direction of rotation is opposite, and the PCB board begins to slow down, and after the PCB board was by the stop part backstop, photoelectric sensor two was sheltered from, and motor two rotates, makes the wheel that rolls lift up, presss from both sides tight operation to the PCB board.

The beneficial effect of this scheme is:

the rolling wheel of this scheme not only plays the effect of transportation, more as clamping device's activity clamp tight piece's effect, through level and driving gear meshing transmission PCB board, lifts and breaks away from the driving gear meshing and realizes the clamping function, simple structure, the motor that the full name control was transmitted does not need complicated instruction, the efficiency of transmission is high.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of an AOI inspection apparatus for PCB boards according to the present invention;

FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;

FIG. 3 is a schematic view of the structure of the transfer roller mechanism of the present invention;

FIG. 4 is a schematic structural view of the conveying and rolling mechanism of the present invention in a horizontal conveying state;

FIG. 5 is a schematic view of the inclined clamping structure of the rolling mechanism of the present invention;

fig. 6 is a partial sectional structural view of a connection structure of a first motor and a side plate in the invention.

In the figure, the device comprises a frame body 1, a frame body 2, side plates 3, a conveying channel 4, a feeding port 5, a discharging port 6, a clamping plate 7, a conveying roller mechanism 8, rolling wheels 9, a first motor 10, a second motor 11, a speed reducing roller mechanism 112, a speed reducing rolling wheel 113, a fourth motor 12, a third motor 13, a supporting frame 14, a round hole 15, a rotating shaft 16, a rolling rotating shaft 17, a driving gear 18, a transmission rod 19, a driven gear 20, a driven speed changing gear 21, a driving speed changing gear 22, an adjusting groove 23, a baffle plate 24, a square groove 25, a limiting block 26, a stopping part 27, a driving device 28, a T-shaped block 29, a T-shaped sliding groove 30, a first sensor 31, a second sensor and a conveying roller mechanism.

Detailed Description

The technical solution of the present invention will be clearly and completely described with reference to the specific embodiments. It should be apparent that the described embodiments are only some of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without inventive step, fall within the scope of protection of the present invention.

Referring to fig. 1-5, the invention provides an AOI detection device for a PCB, which comprises a frame body 1, wherein the frame body 1 comprises side plates 2 arranged at intervals, a transportation channel 3 is formed between the side plates 2, a feeding port 4 and a discharging port 5 are arranged at two ends of the transportation channel 3 along a transportation direction, a clamping plate 6 is arranged at the top of each side plate 2, the side plates 2 are provided with a plurality of transmission roller mechanisms 7 uniformly distributed along the transportation direction, each transmission roller mechanism 7 comprises at least two rolling wheels 8 for transportation, a first motor 9 drives the rolling wheels 8 to rotate, and the transmission roller mechanisms 7 are in two working states of horizontal rolling transportation and inclined lifting by rotating a second motor 10.

Specifically, transmission roller mechanism 7 includes speed reduction roller mechanism 11, speed reduction roller mechanism 11 sets up the one end near discharge gate 5, speed reduction roller mechanism 11 is rotatory by the drive of motor three 12, and speed reduction roller mechanism includes speed reduction rolling wheel 112, speed reduction rolling wheel is rotatory by the drive of motor four 113, the direction of rotation of motor four 113 is opposite with the direction of rotation of motor one 9.

Specifically, transmission roller mechanism 7 includes support frame 13, round hole 14 has been seted up at support frame 13 center, axis of rotation 15 runs through round hole 14 and support frame 13 fixed connection, and two 10 drive axes of rotation 15 of motor rotate, evenly is provided with a plurality of and rotates the wheel 8 that rolls of plane at the coplanar along the circumference direction of round hole 14 on support frame 13, and the wheel 8 that rolls is driven to motor 9 rotates.

Specifically, the first motor 9 is fixed on the side plate 2, the first motor 9 drives the rolling rotating shaft 16 to rotate, the rolling rotating shaft 16 is sleeved with a driving gear 17, a transmission rod 18 is fixedly arranged at the center of the rolling wheel 8, the transmission rod 18 is sleeved with a driven gear 19, when the rolling wheel 8 is in a horizontal position, the driving gear 17 is meshed with the driven gear 19, the transmission roller mechanism 7 is in a horizontal rolling transportation working state, when the rolling wheel 8 is driven to an inclined position, the driving gear 17 is disengaged from the driven gear 19, the transmission rolling mechanism 7 is in an inclined lifting working state, and the number of the rolling wheels 8 is two.

Referring to fig. 6, the driven gear 19 includes driven speed-changing gears 20 with different diameters, the driving gear 17 includes a driving speed-changing gear 21 engaged with the driven speed-changing gear 20, the first motor 9 is fixedly connected with the rolling shaft 16 through a fixing sleeve, an adjusting groove 22 is formed in the side plate 2 along the axial direction of the rolling shaft 16, a baffle plate 23 is arranged in the adjusting groove 22 along the axial direction, a square groove 24 is formed in the baffle plate 23, and a limit block 25 corresponding to the square groove 24 is arranged on the fixing sleeve.

Specifically, a stop member 26 is arranged on one side of the conveying roller mechanism 7 close to the discharge port 5, the stop member 26 is driven by a driving device 27 or is higher than or lower than the plane of the highest point of the conveying roller mechanism 7, a T-shaped block 28 is arranged on the stop member 26 and is clamped with a T-shaped sliding groove 29 extending in the vertical direction on the side plate 2, the stop member 26 slides along the T-shaped sliding groove 29, the bottom of the stop member 26 is connected with the working end of the driving device 27, and the driving device 27 is a push rod or an air cylinder.

Specifically, still include sensor one 30, sensor one 30 and curb plate 2 fixed connection, sensor one 30 sets up on transportation channel 3, sensor one 30 is close to the position of discharge gate 5, still includes sensor two 31, sensor two 31 and curb plate 2 fixed connection, sensor one 30 sets up on transportation channel 3, along the direction of transportation, sensor two 31 set up the rear side of photoelectric sensor one 30.

The working principle of the invention is as follows: the side edges of the two sides form a conveying channel 3 for conveying the PCB, the PCB is fed from a feeding port 4, is conveyed through a conveying roller mechanism 7 and is discharged from a discharging port 5, in the conveying process, a driven gear 19 on a rolling wheel 8 on the conveying roller mechanism 7 is meshed with a driving gear 17 of a motor I9, and the motor I9 drives the rolling wheel 8 to rotate and is used for horizontally conveying the PCB; when the PCB needs to be clamped, the motor II 10 rotates, the rolling wheel 8 on the transmission roller mechanism 7 rotates to an inclined lifting state from a horizontal rolling transportation state, the driven gear 19 on the rolling wheel 8 is separated from the driving effect of the motor I9, the rolling wheel 8 does not rotate, the rolling wheel 8 is a clamping wheel at the moment, the PCB is lifted until the PCB is clamped on the clamping plate 6 on the upper side of the side plate 2, the PCB is clamped and fixed, then the PCB is detected and compared by an AOI high-precision high-speed video camera, after the detection is finished, the motor II 10 rotates in a reverse direction, the rolling wheel 8 returns to a horizontal state, the driven gear 19 on the rolling wheel 8 is meshed with the driving gear 17 on the side plate 2 again, the rolling wheel 8 rotates under the driving action force of the motor I9, the horizontal transmission of the PCB is recovered, and the discharge is carried out at the discharge port 5.

The AOI detection device for the PCB provided by the present invention is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are set forth only to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, it is possible to make various improvements and modifications to the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

Claims

1. The AOI detection device of the PCB is characterized by comprising a frame body (1), wherein the frame body (1) comprises side plates (2) which are arranged at intervals relatively, a transportation channel (3) is formed between the side plates (2), a feeding port (4) and a discharging port (5) are arranged at two ends of the transportation channel (3) along the transportation direction, a clamping plate (6) is arranged at the top of each side plate (2), the side plates (2) are provided with a plurality of transmission roller mechanisms (7) which are uniformly distributed along the transportation direction, each transmission roller mechanism (7) comprises at least two rolling wheels (8) for transportation, each transmission roller mechanism (7) is driven by a motor I (9) to rotate to form horizontal rolling transportation and a motor II (10) to rotate to form inclined lifting working states, each transmission roller mechanism (7) comprises a support frame (13), and a round hole (14) is formed in the center of each support frame (13), the rotating shaft (15) penetrates through the round hole (14) and is fixedly connected with the supporting frame (13), the second motor (10) drives the rotating shaft (15) to rotate, the supporting frame (13) is evenly provided with a plurality of rolling wheels (8) with rotating planes on the same plane along the circumferential direction of the round hole (14), the first motor (9) drives the rolling wheels (8) to rotate, the first motor (9) is fixed on the side plate (2), the first motor (9) drives the rolling rotating shaft (16) to rotate, the rolling rotating shaft (16) is sleeved with the driving gear (17), the center of the rolling wheels (8) is fixedly provided with the transmission rod (18), the transmission rod (18) is sleeved with the driven gear (19), when the rolling wheels (8) are in the horizontal position and the driving gear (17) is meshed with the driven gear (19), the transmission roller mechanism (7) is in the horizontal rolling transportation working state, when the rolling wheel (8) is driven to the inclined position, the driving gear (17) is disengaged from the driven gear (19), and the transmission rolling mechanism (7) is in an inclined and lifted working state.

2. The AOI detection device of the PCB board according to claim 1, wherein the transmission roller mechanism (7) comprises a deceleration roller mechanism (11), the deceleration roller mechanism (11) is arranged at one end close to the discharge hole (5), the deceleration roller mechanism (11) is driven to rotate by a motor III (12), the deceleration roller mechanism (11) comprises a deceleration rolling wheel (112), the deceleration rolling wheel (112) is driven to rotate by a motor IV (113), and the rotation direction of the motor IV (113) is opposite to the rotation direction of the motor I (9).

3. AOI inspection device for PCB boards according to claim 1 characterized in that the rolling wheels (8) are provided in two.

4. The AOI detection device for the PCB board according to claim 1, wherein the driven gear (19) comprises driven speed-changing gears (20) with different diameters, the driving gear (17) comprises a driving speed-changing gear (21) meshed with the driven speed-changing gears (20), the first motor (9) is fixedly connected with the rolling rotating shaft (16) through a fixing sleeve, an adjusting groove (22) is formed in the side plate (2) along the axial direction of the rolling rotating shaft (16), a plurality of baffle plates (23) are arranged in the adjusting groove (22) along the axial direction, a square groove (24) is formed in each baffle plate (23), and a limiting block (25) corresponding to the square groove (24) is arranged on the fixing sleeve.

5. The AOI detection device of the PCB board according to claim 1, wherein a stop piece (26) is arranged on one side of the transmission roller mechanism (7) close to the discharge hole (5), the stop piece (26) is driven by a driving device (27) to be higher or lower than the plane of the transmission roller mechanism (7), a T-shaped block (28) is arranged on the stop piece (26) and clamped with a T-shaped sliding groove (29) extending in the vertical direction on the side plate (2), the stop piece (26) slides along the T-shaped sliding groove (29), and the bottom of the stop piece (26) is connected with the working end of the driving device (27).

6. The AOI inspection apparatus for PCB board according to claim 5, wherein the driving device (27) is a push rod or a cylinder.

7. The AOI detection device for the PCB according to claim 5, further comprising a first sensor (30), wherein the first sensor (30) is fixedly connected with the side plate (2), the first sensor (30) is arranged on the transportation channel (3), and the first sensor (30) is arranged at a position close to the discharge hole (5).

8. The AOI detection device for the PCB according to claim 7, further comprising a second sensor (31), wherein the second sensor (31) is fixedly connected with the side plate (2), the first sensor (30) is arranged on the transportation channel (3), and the second sensor (31) is arranged at the rear side of the first sensor (30) along the transportation direction.