PCB surface crack detection device

Abstract

The utility model discloses a PCB (Printed Circuit Board) surface crack detection device, which comprises a machine tool, a clamping mechanism is arranged on the machine tool, the clamping mechanism comprises air cylinders I fixedly connected to the front and rear ends of two sides of the machine tool, one end of each air cylinder I is fixedly connected with a clamping plate, and the front and rear parts of one side of each clamping plate are fixedly connected with a sliding rod I; the first sliding rod is inserted into the machine tool, the cleaning mechanism is arranged at the front end of the upper portion of the machine tool and comprises a moving seat arranged at the front end of the upper portion of the conveying belt, a banister brush is rotationally connected to the middle of the lower end of the moving seat, and a second motor is fixedly connected to the front end of the moving seat. An output shaft at the rear end of the second motor is fixedly connected to one end of the banister brush, and the dust collection mechanism is arranged on the fixing frame. Compared with the prior art, the PCB clamping device has the advantages that clamping can be flexibly adjusted according to the size of a PCB, and floating dust on the surface of the PCB can be cleaned more conveniently and thoroughly.

Description

Technical Field

[0001] The utility model relates to the technical field of PCB board detection, and specifically refers to a device for detecting cracks on the surface of a PCB board. Background Art

[0002] A circuit board, also known as a printed circuit board (PCB), is a core component in electronic devices. It connects various electronic components, such as resistors, capacitors, transistors, etc., through wires and conductive patterns, thereby realizing the functions of the circuit.

[0003] A PCB board crack detection described in the publication number CN218885779U includes a detection table and a circular detection disk rotatably arranged on the detection table. A plurality of placement grooves are formed on the circular detection disk, and the plurality of placement grooves are circumferentially and evenly distributed around the rotation center of the circular detection disk. A wiping mechanism and a detection mechanism are sequentially arranged on the outer side of the detection table along the rotation direction of the circular detection disk. The wiping mechanism includes a wiping plate and a wiping sponge. The wiping plate is arranged above the circular detection disk and is located on the rotation path of the placement groove. The wiping plate moves along the axial direction of the circular detection disk. The wiping sponge is installed at the bottom of the wiping plate to wipe impurities on the surface of the PCB board before detection, so that the cracks in the PCB board crack detection are exposed, and the visual detection can capture the surface cracks of the PCB board to improve the detection effect. However, there are still defects in the prior art:

[0004] 1. In the prior art, the size of the placement groove is adapted to the size of the PCB board, so that the PCB board to be detected can be just placed in the placement groove, which has a positioning effect. However, it is not convenient to fix circuit boards of different sizes, and the use has limitations.

[0005] 2. In the prior art, the detection surface of the PCB board is wiped by contacting the wiping sponge. However, impurities are easily stained on the surface of the wiping sponge after long-term use, and if not cleaned in time, it will instead contaminate the surface of the PCB board. Content of the Utility Model

[0006] The technical problem to be solved by the utility model is to overcome the above defects and provide a device for detecting cracks on the surface of a PCB board.

[0007] To solve the above technical problem, the technical solution provided by the utility model is: a device for detecting cracks on the surface of a PCB board, including:

[0008] A machine tool, with a conveyor belt arranged in the middle of the upper end of the machine tool;

[0009] A conveying mechanism, which is arranged on the conveyor belt;

[0010] The clamping mechanism is arranged on the machine tool. The clamping mechanism includes a first cylinder fixedly connected to the front and rear ends on both sides of the machine tool. One end of the first cylinder is fixedly connected with a clamping plate. On the front and rear sides of one side of the clamping plate, a first sliding rod is fixedly connected. The first sliding rod is inserted into the machine tool;

[0011] The cleaning mechanism is arranged at the front end above the machine tool. The cleaning mechanism includes a moving seat arranged at the front end above the conveyor belt. A soft brush is rotatably connected to the middle of the lower end of the moving seat. A second motor is fixedly connected to the front end of the moving seat. The output shaft at the rear end of the second motor is fixedly connected to one end of the soft brush;

[0012] The lifting seat is arranged on the upper end of the moving seat;

[0013] The moving mechanism is arranged between the moving seat and the lifting seat;

[0014] The fixing frame is fixedly connected to the front side of the upper end of the machine tool;

[0015] The lifting mechanism is arranged on the lifting seat;

[0016] The dust suction mechanism is arranged on the fixing frame. The dust suction mechanism includes connecting pipes inserted into the front and rear sides of both ends of the upper end of the fixing frame. A dust suction head is fixedly connected to the lower end of the connecting pipe. A dust suction pipe is arranged above the fixing frame. The upper end of the connecting pipe is fixedly inserted into the lower end of the dust suction pipe;

[0017] The detection mechanism is arranged at the rear side of the upper end of the machine tool. The detection mechanism includes a support seat fixedly connected to the rear side of the upper end of the machine tool. An installation seat is arranged in the middle of the lower end of the support seat. A number of evenly distributed industrial cameras are fixedly connected to the lower end of the installation seat;

[0018] The transmission mechanism is arranged on the installation seat.

[0019] As an improvement, the conveyor mechanism includes:

[0020] Conveyor rollers. Two conveyor rollers are arranged at both ends inside the conveyor belt. The conveyor rollers are rotatably connected to the machine tool;

[0021] A first motor is fixedly connected to the rear end of one side of the machine tool. One end of the first motor is fixedly connected to one end of the conveyor roller.

[0022] As an improvement, the moving mechanism includes:

[0023] A screw rod is inserted into the front side of the lower end of the lifting seat. The screw rod is threadedly connected to the front side of the upper end of the moving seat;

[0024] A limit post is inserted into the rear side of the lower end of the lifting seat;

[0025] Motor three, the motor three is fixedly connected to one side of the lifting seat, and one end of the motor three is fixedly connected to one end of the screw rod.

[0026] As an improvement, the lifting mechanism includes:

[0027] Cylinder two, the cylinder two is fixedly connected to the middle of the upper end of the fixed frame, and the lower end of the cylinder two is fixedly connected to the middle of the upper end of the lifting seat;

[0028] Slide rod two, two of the slide rod two are fixedly connected to both sides of the upper end of the lifting seat, and the upper end of the slide rod two penetrates through the fixed frame.

[0029] As an improvement, the transmission mechanism includes:

[0030] Cylinder three, the cylinder three is fixedly connected to the middle of the upper end of the support seat, and the lower end of the cylinder three is fixedly connected to the middle of the upper end of the mounting seat;

[0031] Slide rod three, two of the slide rod three are fixedly connected to both sides of the upper end of the mounting seat, and the upper end of the slide rod three penetrates through the support seat.

[0032] The advantages of the present utility model compared with the prior art are as follows: 1. The cylinder one on both sides of the rear end in the present utility model drives the clamping plates on both sides of the rear end to approach each other to clamp the PCB board, and the clamping can be flexibly adjusted according to the size of the PCB board.

[0033] 2. In the present utility model, when the cylinder two is started, it drives the soft brush to move downward. When the motor two is started, it drives the soft brush to rotate to clean the floating dust on the surface of the PCB board. Then, when the motor three is started, it drives the screw rod to rotate, which can drive the soft brush to move left and right to clean the PCB board. At the same time, one end of the dust collection mechanism connected to the external fan is connected to the dust suction pipe, and through the dust suction head and the connecting pipe, the impurities on the PCB board cleaned by the soft brush are sucked out, ensuring that the impurities will not fall on other PCB boards to be detected. Description of the Drawings

[0034] Figure 1 is the structural schematic diagram of a PCB board surface crack detection device of the present utility model Figure 1 .

[0035] Figure 2 is the front view of a PCB board surface crack detection device of the present utility model.

[0036] Figure 3 is Figure 2 the sectional view taken along line A-A in

[0037] Figure 4 is the structural schematic diagram of a PCB board surface crack detection device of the present utility model Figure 2 .

[0038] Figure 5 Yes Figure 4 It is an enlarged view of area A in the middle.

[0039] As shown in the figure: 1. Machine tool; 2. Conveyor belt; 3. Conveying mechanism; 31. Conveyor roller; 32. Motor 1; 4. Clamping mechanism; 41. Cylinder 1; 42. Clamping plate; 43. Slide bar 1; 5. Cleaning mechanism; 51. Moving seat; 52. Soft brush; 53. Motor 2; 6. Lifting seat; 7. Moving mechanism; 71. Screw rod; 72. Limit column; 73. Motor 3; 8. Fixed frame; 9. Lifting mechanism; 91. Cylinder 2; 92. Slide bar 2; 10. Dust suction mechanism; 101. Connecting pipe; 102. Dust suction head; 103. Dust suction pipe; 11. Detection mechanism; 111. Support seat; 112. Mounting seat; 113. Industrial camera; 12. Transmission mechanism; 121. Cylinder 3; 122. Slide bar 3. Specific implementation mode

[0040] The following further describes the present utility model in detail with reference to the accompanying drawings.

[0041] A device for detecting surface cracks of a PCB board includes a machine tool 1. In the middle of the upper end of the machine tool 1, there is a conveyor belt 2. On the conveyor belt 2, there is a conveying mechanism 3. The conveying mechanism 3 includes conveyor rollers 31 and a motor 1 32. The two conveyor rollers 31 are arranged at both ends inside the conveyor belt. The conveyor rollers 31 are rotatably connected to the machine tool 1. The motor 1 32 is fixedly connected to the rear end of one side of the machine tool 1. One end of the motor 1 32 is fixedly connected to one end of the conveyor roller 31. The motor 1 32 drives the conveyor roller 31 to rotate, thereby driving the conveyor belt 2 to rotate to convey the detected PCB board.

[0042] On the machine tool 1, there is a clamping mechanism 4. The clamping mechanism 4 includes cylinders 1 41 fixedly connected to the front and rear ends on both sides of the machine tool 1. One end of the cylinder 1 41 is fixedly connected with a clamping plate 42. On both sides of the clamping plate 42, there are slide bars 1 43 fixedly connected to the front and rear. The slide bars 1 43 are inserted into the machine tool 1. The clamping plates 42 at both ends of the front side move closer to or away from each other under the drive of the cylinders 1 41 at both ends of the front side to clamp the PCB board. The clamping plates 42 at both ends of the rear side move closer to or away from each other under the drive of the cylinders 1 41 at both ends of the rear side to clamp the PCB board.

[0043] At the front end above the machine tool 1, there is a cleaning mechanism 5. The cleaning mechanism 5 includes a moving seat 51 arranged at the front end above the conveyor belt 2. In the middle of the lower end of the moving seat 51, there is a rotatably connected soft brush 52. At the front end of the moving seat 51, there is a fixedly connected motor 2 53. The output shaft at the rear end of the motor 2 53 is fixedly connected to one end of the soft brush 52. The motor 2 53 drives the soft brush 52 to rotate to clean the floating dust on the surface of the PCB board. Because the PCB board is cleaned before detection, generally, the main interference to the detection is the floating dust falling on the PCB board, and it can be cleaned by rotating the soft brush 52.

[0044] A lifting seat 6 is provided at the upper end of the moving seat 51, and a moving mechanism 7 is provided between the moving seat 51 and the lifting seat 6. The moving mechanism 7 includes a screw rod 71, a limiting column 72, and a motor three 73. The screw rod 71 is inserted into the front side of the lower end of the lifting seat 6, and the screw rod 71 is threadedly connected to the front side of the upper end of the moving seat 51. The limiting column 72 is inserted into the rear side of the lower end of the lifting seat 6. The motor three 73 is fixedly connected to one side of the lifting seat 6, and one end of the motor three 73 is fixedly connected to one end of the screw rod 71. The motor three 73 drives the screw rod 71 to rotate, which can drive the moving seat 51 to move left and right under the limitation of the limiting column 72, thereby driving the soft brush 52 to move left and right to clean the PCB board.

[0045] A fixing frame 8 is fixedly connected to the front side of the upper end of the machine tool 1. A lifting mechanism 9 is provided on the lifting seat 6. The lifting mechanism 9 includes a cylinder two 91 and a sliding rod two 92. The cylinder two 91 is fixedly connected to the middle of the upper end of the fixing frame 8, and the lower end of the cylinder two 91 is fixedly connected to the middle of the upper end of the lifting seat 6. The two sliding rods two 92 are fixedly connected to both sides of the upper end of the lifting seat 6, and the upper ends of the sliding rods two 92 penetrate through the fixing frame 8. The cylinder two 91 drives the lifting seat 6 to move up and down, thereby driving the soft brush 52 to move up and down.

[0046] A dust suction mechanism 10 is provided on the fixing frame 8. The dust suction mechanism 10 includes connecting pipes 101 inserted into the front and rear sides of both sides of the upper end of the fixing frame 8. The lower ends of the connecting pipes 101 are fixedly connected with dust suction heads 102. A dust suction pipe 103 is arranged above the fixing frame 8. The upper ends of the connecting pipes 101 are fixedly inserted into the lower end of the dust suction pipe 103. A dust collection mechanism connected to an external fan is connected to one end of the dust suction pipe 103. Through the dust suction head 102 and the connecting pipe 101, the impurities on the PCB board cleaned by the soft brush 52 are sucked out to ensure that the impurities do not fall on other PCB boards to be detected.

[0047] A detection mechanism 11 is provided at the rear side of the upper end of the machine tool 1. The detection mechanism 11 includes a support seat 111 fixedly connected to the rear side of the upper end of the machine tool 1. An installation seat 112 is arranged in the middle of the lower end of the support seat 111. A plurality of evenly distributed industrial cameras 113 are fixedly connected to the lower end of the installation seat 112. A transmission mechanism 12 is provided on the installation seat 112. The transmission mechanism 12 includes a cylinder three 121 and a sliding rod three 122. The cylinder three 121 is fixedly connected to the middle of the upper end of the support seat 111, and the lower end of the cylinder three 121 is fixedly connected to the middle of the upper end of the installation seat 112. The two sliding rods three 122 are fixedly connected to both sides of the upper end of the installation seat 112, and the upper ends of the sliding rods three 122 penetrate through the support seat 111. The cylinder three 121 drives the installation seat 112 to move up and down, thereby driving the industrial camera 113 to move up and down to adjust the detection height. The industrial camera 113 takes pictures of the PCB board and transmits them to the display screen for the staff to view the crack situation on the surface of the PCB board in detail.

[0048] When the present utility model is specifically implemented, such asFigures 1-5 As shown in the figure, during use, place the PCB board to be detected on the front side of the upper end of the conveyor belt 2. The conveyor belt 2 conveys it backward and pauses at the lower end of the soft brush 52. Start the cylinders 41 at both ends of the front side to drive the clamping plates 42 on both sides of the front end to approach each other and clamp the PCB board. Then start the cylinder 91 to drive the lifting seat 6 to move downward, thereby driving the soft brush 52 to move downward. Start the motor 53 to drive the soft brush 52 to rotate to clean the floating dust on the surface of the PCB board. Then start the motor 73 to drive the screw 71 to rotate, which can drive the moving seat 51 to move left and right under the limit of the limit post 72, thereby driving the soft brush 52 to move left and right to clean the PCB board. At the same time, the dust collection mechanism connected to the external fan is connected to one end of the dust suction pipe 103. Through the dust suction head 102 and the connecting pipe 101, the impurities on the PCB board cleaned by the soft brush 52 are sucked out to ensure that the impurities do not fall on other PCB boards to be detected. After cleaning, the cylinder 41 drives the soft brush 52 to move upward to prepare for cleaning the next PCB board.

[0049] Then start the cylinders 41 at both ends of the front side to drive the two clamping plates 42 at the front end to move away from each other, releasing the clamping of the PCB board. The conveyor belt 2 conveys the PCB board backward to below the industrial camera 113. The cylinders 41 at both sides of the rear end drive the clamping plates 42 at both sides of the rear end to approach each other and clamp the PCB board. The cylinder 121 drives the mounting seat 112 to move up and down to adjust to a suitable height, thereby driving the industrial camera 113 to move up and down to adjust the detection height. The industrial camera 113 takes a picture of the PCB board and transmits it to the display screen for the staff to view the crack situation on the surface of the PCB board in detail.

[0050] All the electrical components mentioned in this article are electrically connected to the external main controller and 220V mains power. And the main controller can be a conventional known device such as a computer for control. The detailed descriptions of known functions and known components are omitted in the specific implementation manners of the present disclosure. To ensure the compatibility of the device, the operation means adopted are consistent with the parameters of market instruments.

[0051] The above describes the present utility model and its implementation manners. This description is not restrictive. What is shown in the drawings is only one of the implementation manners of the present utility model, and the actual structure is not limited thereto. Generally speaking, if those of ordinary skill in the art are inspired by it and design similar structural manners and embodiments without creative efforts without departing from the creative concept of the present utility model, they shall fall within the protection scope of the present utility model.

Claims

1. A PCB surface crack detection device, characterized in that: include: A machine tool (1), wherein a conveyor belt (2) is arranged in the middle of the upper end of the machine tool (1); A conveying mechanism (3), wherein the conveying mechanism (3) is arranged on the conveyor belt (2); A clamping mechanism (4), the clamping mechanism (4) being arranged on the machine tool (1), the clamping mechanism (4) comprising a cylinder (41) fixedly connected to the front and rear ends of both sides of the machine tool (1), one end of the cylinder (41) being fixedly connected to a clamping plate (42), one side of the clamping plate (42) being fixedly connected to a slide bar (43) at the front and rear ends, the slide bar (43) being plugged into the machine tool (1); A cleaning mechanism (5), the cleaning mechanism (5) being arranged at the front end above the machine tool (1), the cleaning mechanism (5) comprising a movable seat (51) arranged at the front end above the conveyor belt (2), a soft brush (52) being rotatably connected to the middle of the lower end of the movable seat (51), a second motor (53) being fixedly connected to the front end of the movable seat (51), and a rear output shaft of the second motor (53) being fixedly connected to one end of the soft brush (52); A lifting seat (6), wherein the lifting seat (6) is arranged on the upper end of the moving seat (51); A moving mechanism (7), wherein the moving mechanism (7) is arranged between the moving seat (51) and the lifting seat (6); A fixed frame (8), the fixed frame (8) being fixedly connected to the front side of the upper end of the machine tool (1); A lifting mechanism (9), wherein the lifting mechanism (9) is arranged on the lifting seat (6); A dust suction mechanism (10), the dust suction mechanism (10) being arranged on a fixed frame (8), the dust suction mechanism (10) comprising connecting pipes (101) plugged into the front and rear sides of the upper end of the fixed frame (8), the lower end of the connecting pipe (101) being fixedly connected to a dust suction head (102), a dust suction pipe (103) being arranged above the fixed frame (8), the upper end of the connecting pipe (101) being fixedly plugged into the lower end of the dust suction pipe (103); A detection mechanism (11), the detection mechanism (11) being arranged at the rear side of the upper end of the machine tool (1), the detection mechanism (11) comprising a support seat (111) fixedly connected to the rear side of the upper end of the machine tool (1), a mounting seat (112) being arranged in the middle of the lower end of the support seat (111), and a plurality of evenly distributed industrial cameras (113) being fixedly connected to the lower end of the mounting seat (112); A transmission mechanism (12), wherein the transmission mechanism (12) is arranged on a mounting seat (112).

2. A PCB surface crack detection device according to claim 1, characterized in that: The transmission mechanism (3) comprises: Conveying rollers (31), two conveying rollers (31) are arranged at two ends of the conveying belt, and the conveying rollers (31) are rotatably connected to the machine tool (1); A motor (32) is fixedly connected to a rear end of one side of the machine tool (1), and one end of the motor (32) is fixedly connected to one end of a conveying roller (31).

3. A PCB surface crack detection device according to claim 1, characterized in that: The moving mechanism (7) comprises: A screw rod (71), the screw rod (71) is inserted into the front side of the lower end of the lifting seat (6), and the screw rod (71) is threadedly connected to the front side of the upper end of the moving seat (51); A limiting column (72), wherein the limiting column (72) is plugged into the rear side of the lower end of the lifting seat (6); Motor three (73), the motor three (73) is fixedly connected to one side of the lifting seat (6), and one end of the motor three (73) is fixedly connected to one end of the screw rod (71).

4. The PCB surface crack detection device according to claim 1, characterized in that: The lifting mechanism (9) comprises: Cylinder 2 (91), the cylinder 2 (91) is fixedly connected to the middle of the upper end of the fixing frame (8), and the lower end of the cylinder 2 (91) is fixedly connected to the middle of the upper end of the lifting seat (6); Sliding rod 2 (92), the two sliding rods 2 (92) are fixedly connected to both sides of the upper end of the lifting seat (6), and the upper end of the sliding rod 2 (92) passes through the fixing frame (8).

5. The PCB surface crack detection device according to claim 1, characterized in that: The transmission mechanism (12) comprises: Cylinder three (121), the cylinder three (121) is fixedly connected to the middle of the upper end of the support seat (111), and the lower end of the cylinder three (121) is fixedly connected to the middle of the upper end of the mounting seat (112); Sliding rod three (122), two of the sliding rods three (122) are fixedly connected to both sides of the upper end of the mounting seat (112), and the upper end of the sliding rod three (122) passes through the supporting seat (111).

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