Visual inspection device for PCB (printed circuit board) drilling

Abstract

The utility model belongs to the technical field of PCB (printed circuit board) detection devices, and particularly relates to a PCB drilling visual detection device which comprises a device base, a transmission mechanism and a detection mechanism are arranged at the top end of the device base, the transmission mechanism comprises rotating rollers, the rotating rollers are symmetrically mounted at two ends of the inner side of the top end of the device base, and the detection mechanism is connected with the transmission mechanism. The outer walls of the rotating rollers are evenly sleeved with conveying belts, a motor is installed on one side of one rotating roller, driving assemblies are arranged on the outer walls of the two sides of the rotating rollers, and the detection mechanism comprises a detection device arranged at the top end of the device base. Through the arrangement of the driving assembly, the position of the PCB is corrected before the PCB is moved to the bottom end of the detection device, the problems that when a worker places the PCB, the position of the PCB is prone to deflection, the comparison difficulty of the detection mechanism is increased, the recognition efficiency is reduced, and the misjudgment rate is increased are solved, and the detection efficiency is improved. And the detection efficiency and the detection accuracy of the device are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of PCB plate detection devices, in particular to a PCB plate drilling visual detection device. Background Art

[0002] PCB sheet material, or printed circuit board sheet material, is a key component of printed circuit boards, and PCB sheet drilling is an important step in the PCB manufacturing process. It is mainly used to install components on the PCB board or connect the board to other circuit boards or devices. Drilling not only provides physical support for component installation, such as soldering of plug-in components, but more importantly, it forms conductive holes through processes such as copper plating to achieve electrical interconnection between different layers. The drilling accuracy and hole wall smoothness directly affect the electrical performance and signal integrity of the PCB. Therefore, it is necessary to test the drilled PCB sheet material to ensure the price quality of the PCB sheet material;

[0003] Compared with traditional manual inspection, the existing technology usually adopts optical inspection equipment, that is, the surface image information of the PCB board is collected by an acquisition component, and the collected image information is compared with the pre-input drawing to make an evaluation and judge the drilling quality of the PCB board. Optical visual inspection can greatly improve the inspection efficiency and accuracy of the drilling quality of the PCB board.

[0004] In the current existing technology, in order to improve the efficiency of PCB board drilling quality inspection, the inspection mechanism is usually set on the conveyor belt, and the PCB board to be inspected is placed on the conveyor belt, so that it automatically passes through the inspection mechanism and is subjected to image acquisition by the acquisition component of the inspection mechanism. However, there is a problem that the position of the PCB board is easily deflected when the staff places the PCB board, making the comparison of the inspection mechanism more difficult, resulting in reduced recognition efficiency and increased misjudgment rate.

[0005] Therefore, in order to solve the above problems, a PCB board drilling visual inspection device is proposed. Utility Model Content

[0006] In order to make up for the shortcomings of the existing technology and solve the problem that the position of PCB boards is easily deflected when the staff places the PCB boards, which makes the comparison of the detection mechanism more difficult, resulting in a decrease in recognition efficiency and an increase in the misjudgment rate, a PCB board drilling visual inspection device is proposed.

[0007] The technical solution adopted by the present invention to solve the technical problem is as follows: the present invention provides a PCB plate drilling visual inspection device, comprising a device base, the top of which is provided with a transmission mechanism and a detection mechanism;

[0008] The transmission mechanism includes rotating rollers, which are symmetrically mounted at both ends of the inner side of the top of the device base. The outer walls of the rotating rollers are evenly sleeved with conveyor belts. A motor is mounted on one side of one of the rotating rollers. The motor is connected to an external power supply via a wire. The outer walls of both sides of the rotating rollers are provided with drive components.

[0009] The detection mechanism includes a detection device arranged at the top of the device base, a collection component is arranged at the bottom of the detection device, and an adjustment component is arranged at the top of the detection device.

[0010] Preferably, the driving assembly includes a synchronous belt arranged on the outer walls of both sides of the rotating roller, the other end of the synchronous belt is sleeved with a connecting rod, one end of the connecting rod is fixedly installed with a rotating block, the end of the rotating block away from the connecting rod is rotatably installed with a first connecting strip, the other end of the first connecting strip is rotatably installed with a pushing block, one side of the pushing block is abutted with a driving rod, one side of the driving rod is fixedly installed with a pushing plate, intermittent components are provided on both sides of the pushing plate, the inner wall of the pushing plate is slidably installed with a sliding block, and one side of the sliding block is fixedly installed with a correction plate; the position of the PCB plate can be corrected before the PCB plate moves to the bottom end of the detection device, thereby improving the detection efficiency and detection accuracy of the device.

[0011] Preferably, an inclined portion is provided on the side of the pushing block close to the driving rod, and the driving rods are all slidably installed on the inner wall of the limiting groove, and the limiting grooves are all opened at the top of the device base; when the pushing block abuts against the driving rod, the driving rod can be driven to move by the inclined portion provided on one side of the pushing block, and at the same time, the driving rod can move along the limiting groove through the limiting guiding function of the limiting groove.

[0012] Preferably, the intermittent component includes support plates arranged on both sides of the pushing plate, a fixed plate is installed on one side of the support plate, the fixed plates are fixedly installed on the top of the device base, the limit grooves and the fixed plates are connected by reset springs, the reset springs are wound around the outer wall of the protective round rod, and the protective round rods are fixedly installed on one side of the fixed plate; the intermittent operation of the driving component can be realized, so that the correction plate can be reset, avoiding the correction plate staying at the top of the conveyor belt, causing motion interference to the transmission of subsequent PCB plates.

[0013] Preferably, the sliding block and the push plate are connected by a buffer spring, and limit blocks are fixedly installed at both ends of the inner side of the push plate. Corresponding grooves are provided on both sides of the sliding block; this can avoid the problem that the sliding block still pushes the correction plate to move after the limit plate abuts and hinders the movement of the correction plate, causing motion interference and thus damage to the device.

[0014] Preferably, the adjustment assembly includes a measuring plate arranged at the top of the detection device, and two measuring plates are symmetrically installed. A slider is fixedly installed at the bottom end of each measuring plate, and a bidirectional screw rod is threadedly installed on the inner wall of each slider. A handwheel is fixedly installed at one end of each bidirectional screw rod, and a second connecting bar is fixedly installed on one side of each measuring plate, and a limit plate is fixedly installed on the other end of each second connecting bar, and the limit plate abuts against one end of the correction plate; when drilling detection is performed on PCB plates of different sizes, the limit plate can limit the moving range of the correction plate, thereby improving the stability and applicability of the device.

[0015] Preferably, a guide rod is fixedly installed at one end of the correction plate away from the limit plate, and the guide rod is slidably installed on the inner wall of the guide seat, and the guide seat is fixedly installed on the top of the device base; it can support and guide the correction plate when the correction plate moves, thereby improving the stability of the correction plate when it moves.

[0016] Beneficial effects of the utility model:

[0017] The utility model provides a PCB plate drilling visual inspection device. By arranging a driving component, before the PCB plate moves to the bottom end of the inspection device, the rotating roller can drive the correction plate to move through the connecting rod, the rotating block, the first connecting bar, the pushing block, the driving rod, the pushing plate and the sliding block, so that the correction plate squeezes both sides of the PCB plate to correct the position of the PCB plate, thereby avoiding the problem that the position of the PCB plate is easily deflected when the staff places the PCB plate, resulting in increased difficulty in comparison of the inspection mechanism, resulting in reduced recognition efficiency and increased misjudgment rate, thereby improving the inspection efficiency and inspection accuracy of the device.

[0018] The utility model provides a visual inspection device for drilling holes in PCB plates. By arranging an adjustment component, when performing drilling inspection on PCB plates of different sizes, a worker can place one of a batch of PCB plates to be tested on the top of the inspection device. At this time, the worker rotates a handwheel, causing the handwheel to drive a bidirectional screw to rotate, and the bidirectional screw drives a measuring plate to move toward each other until both sides of the PCB plate abut against the measuring plate. At the same time, the measuring plate drives a limit plate to move via a second connecting bar, so that the limit plate limits the moving range of the correction plate, thereby avoiding the problem that when the PCB plate size is large, the correction plate applies a large thrust to the PCB plate, which easily causes the PCB plate to be bent and damaged, thereby affecting the processing quality of the PCB plate, thereby improving the stability and applicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0020] Figure 1 It is a three-dimensional diagram of the main structure of the utility model;

[0021] Figure 2 This is a cross-sectional structural perspective view of the drive assembly in the present utility model;

[0022] Figure 3 This utility model Figure 2 Enlarged view of point A in the middle;

[0023] Figure 4 This utility model Figure 3 Enlarged view of point B in the middle;

[0024] Figure 5 This utility model Figure 3 Enlarged view of point C in the middle;

[0025] Legend:

[0026] 1. Device base; 2. Rotating roller; 3. Conveyor belt; 4. Motor; 5. Detection device; 6. Synchronous belt; 7. Connecting rod; 8. Rotating block; 9. First connecting strip; 10. Pushing block; 11. Driving rod; 12. Pushing plate; 13. Sliding block; 14. Correction plate; 15. Limiting groove; 16. Support plate; 17. Fixed plate; 18. Reset spring; 19. Protective round rod; 20. Limiting block; 21. Measuring plate; 22. Bidirectional screw; 23. Handwheel; 24. Second connecting strip; 25. Limiting plate; 26. Guide rod; 27. Guide seat. DETAILED DESCRIPTION

[0027] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] Specific examples are given below.

[0029] See also Figures 1 to 5 The present invention provides a visual inspection device for drilling holes in PCB boards, comprising a device base 1, the top of which is provided with a transmission mechanism and a detection mechanism;

[0030] The transmission mechanism includes rotating rollers 2, which are symmetrically mounted on both ends of the inner side of the top of the device base 1. The outer walls of the rotating rollers 2 are evenly covered with conveyor belts 3. A motor 4 is installed on one side of one of the rotating rollers 2. The motor 4 is connected to an external power supply via a wire. The outer walls of both sides of the rotating rollers 2 are provided with drive components. The motor 4 model is LW100.

[0031] The detection mechanism includes a detection device 5 arranged at the top of the device base 1, a collection component is arranged at the bottom of the detection device 5, and an adjustment component is arranged at the top of the detection device 5.

[0032] Further, such as Figures 1 to 5 As shown, the driving assembly includes a synchronous belt 6 arranged on the outer walls on both sides of the rotating roller 2, the other end of the synchronous belt 6 is sleeved with a connecting rod 7, one end of the connecting rod 7 is fixedly installed with a rotating block 8, the end of the rotating block 8 away from the connecting rod 7 is rotatably installed with a first connecting bar 9, the other end of the first connecting bar 9 is rotatably installed with a pushing block 10, one side of the pushing block 10 is in contact with a driving rod 11, one side of the driving rod 11 is fixedly installed with a pushing plate 12, both sides of the pushing plate 12 are provided with intermittent assemblies, the inner wall of the pushing plate 12 is slidably installed with a sliding block 13, and one side of the sliding block 13 is fixedly installed with a correction plate 14.

[0033] Further, such as Figures 2 to 4 As shown, the pushing block 10 is provided with an inclined portion on one side close to the driving rod 11, and the driving rod 11 is slidably installed on the inner wall of the limiting groove 15, and the limiting groove 15 is opened at the top of the device base 1; when the pushing block 10 abuts against the driving rod 11, the driving rod 11 can be driven to move by the inclined portion provided on one side of the pushing block 10, and at the same time, the limiting guiding function of the limiting groove 15 allows the driving rod 11 to move along the limiting groove 15.

[0034] To sum up, by setting up a driving assembly, before the PCB plate moves to the bottom end of the detection device 5, the rotating roller 2 can drive the correction plate 14 to move through the connecting rod 7, the rotating block 8, the first connecting bar 9, the pushing block 10, the driving rod 11, the pushing plate 12 and the sliding block 13, so that the correction plate 14 squeezes both sides of the PCB plate to correct the position of the PCB plate, avoiding the position of the PCB plate being easily deflected when the staff places the PCB plate, resulting in increased difficulty in comparison of the detection mechanism, thereby causing a decrease in recognition efficiency and an increase in the misjudgment rate, thereby improving the detection efficiency and detection accuracy of the device.

[0035] Further, such as Figures 2 to 5As shown, the intermittent component includes support plates 16 arranged on both sides of the pushing plate 12, and a fixing plate 17 is installed on one side of the support plate 16. The fixing plates 17 are fixedly installed on the top of the device base 1, and the limiting groove 15 and the fixing plate 17 are connected by a return spring 18. The return spring 18 is wound around the outer wall of the protective round rod 19, and the protective round rod 19 is fixedly installed on one side of the fixing plate 17; by setting the intermittent component, after the correction plate 14 moves to correct the position of the PCB board, when the connecting rod 7 drives the rotating block 8 to rotate to the other side of the connecting rod 7, the return spring 18 releases its elastic potential energy, and elastic deformation occurs to drive the support plate 16 to move in the direction close to the fixed plate 17. The support plate 16 drives the correction plate 14 to move through the pushing plate 12 and the sliding block 13, thereby realizing the intermittent operation of the driving component, so that the correction plate 14 can be reset, avoiding the problem that the correction plate 14 stays at the top of the conveyor belt 3 and causes motion interference to the transmission of subsequent PCB boards, thereby improving the stability and reliability of the device.

[0036] In order to improve the applicability of the device, Figures 1 to 3 As shown, the adjustment component includes a measuring plate 21 arranged at the top of the detection device 5, two measuring plates 21 are symmetrically installed, the bottom end of each measuring plate 21 is fixedly installed with a slider, the inner wall of the slider is threaded with a bidirectional screw rod 22, one end of the bidirectional screw rod 22 is fixedly installed with a hand wheel 23, one side of the measuring plate 21 is fixedly installed with a second connecting bar 24, the other end of the second connecting bar 24 is fixedly installed with a limit plate 25, and the limit plate 25 is in contact with one end of the correction plate 14; by setting the adjustment component, when drilling detection is performed on PCB boards of different sizes, the staff can place one of the PCB boards to be tested in a batch of PCB boards. At the top of the detection device 5, the staff rotates the handwheel 23, so that the handwheel 23 drives the bidirectional screw 22 to rotate, and the bidirectional screw 22 drives the measuring plate 21 to move toward each other until both sides of the PCB plate are in contact with the measuring plate 21. At the same time, the measuring plate 21 drives the limit plate 25 to move through the second connecting bar 24, so that the limit plate 25 limits the movement range of the correction plate 14, avoiding the problem that when the PCB plate size is large, the correction plate 14 applies a large thrust to the PCB plate, which easily causes the PCB plate to bend and damage, affecting the processing quality of the PCB plate, thereby improving the stability and applicability of the device.

[0037] Further, such as Figures 2 to 4As shown, the sliding block 13 and the pushing plate 12 are connected by a buffer spring, and the limiting blocks 20 are fixedly installed at both ends of the inner side of the pushing plate 12, and corresponding grooves are provided on both sides of the sliding block 13; when adjusting to reduce the moving range of the correction plate 14, the sliding block 13 pushes the correction plate 14 to move until it abuts against the limiting plate 25, and the sliding block 13 squeezes the buffer spring, causing the buffer spring to undergo elastic deformation and accumulate elastic potential energy, thereby avoiding the problem that the sliding block 13 still pushes the correction plate 14 to move after the limiting plate 25 abuts and hinders the movement of the correction plate 14, causing motion interference and thus device damage, thereby improving the stability and reliability of the adjustment component.

[0038] In order to improve the stability of the correction plate 14 when it moves, Figures 1 to 5 As shown, a guide rod 26 is fixedly installed at one end of the correction plate 14 away from the limit plate 25, and the guide rod 26 is slidably installed on the inner wall of the guide seat 27, and the guide seat 27 is fixedly installed on the top of the device base 1; by providing the guide rod 26 and the guide seat 27, the correction plate 14 can be supported and guided when the correction plate 14 moves, avoiding the problem that when one end of the correction plate 14 abuts against the limit plate 25, it is easy to cause the correction plate 14 to tilt, thereby affecting the correction effect of the correction plate 14 on the PCB plate, thereby affecting the detection effect of the PCB plate.

[0039] Working Principle: When drilling quality inspection is required for PCB boards, one of the PCB boards to be tested is placed on the top of the inspection device 5. At this time, the staff rotates the handwheel 23, causing the handwheel 23 to rotate the bidirectional screw 22, which in turn drives the measuring plate 21 to move toward each other until both sides of the PCB board abut against the measuring plate 21. At the same time, the measuring plate 21 drives the second connecting bar 24 to move, which in turn drives the limit plate 25 to move, so that the limit plate 25 limits the movement range of the correction plate 14.

[0040] After completing the adjustment of the moving range of the correction plate 14, the PCB plate is placed at one end of the conveyor belt 3, and the motor 4 is started. The motor 4 drives the rotating roller 2 to rotate, and the rotating roller 2 drives the conveyor belt 3 to rotate, so that the conveyor belt 3 drives the PCB plate to move. At the same time, the rotating roller 2 drives the synchronous belt 6 to rotate, and the synchronous belt 6 drives the connecting rod 7 to rotate. The connecting rod 7 drives the rotating block 8 to rotate, and the rotating block 8 drives one end of the first connecting strip 9 to rotate, so that the other end of the first connecting strip 9 drives the pushing block 10 to move. The inclined portion provided on one side of the pushing block 10 abuts against the driving rod 11. Under the limiting action of the limiting groove 15, the pushing block 10 drives the driving rod 11 to move along the limiting groove 15, and the driving rod 11 drives the pushing plate 12 to move, and the pushing plate 12 drives the sliding block 13 to move. The sliding block 1 3 drives the correction plate 14 to move, so that when the PCB plate passes between the correction plates 14, the correction plate 14 can squeeze both sides of the PCB plate, thereby correcting the position of the PCB plate. At the same time, the pushing plate 12 drives the supporting plate 16 to move, and the supporting plate 16 drives the reset spring 18 to stretch, so that the reset spring 18 is elastically deformed and accumulates elastic potential energy. Therefore, when the connecting rod 7 drives the rotating block 8 to rotate to the other side of the connecting rod 7, the reset spring 18 releases the elastic potential energy, elastically deforms, and drives the support plate 16 to move in the direction close to the fixed plate 17. The support plate 16 drives the pushing plate 12 to move, and the pushing plate 12 drives the driving rod 11 and the sliding block 13 to move, and the sliding block 13 drives the correction plate 14 to move, thereby realizing the intermittent operation of the driving assembly.

[0041] 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 are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention as claimed.

Claims

1. A PCB board drilling visual inspection device, comprising a device base (1), characterized in that: A transmission mechanism and a detection mechanism are provided on the top of the device base (1); The transmission mechanism comprises rotating rollers (2), the rotating rollers (2) being symmetrically mounted on both ends of the inner side of the top end of the device base (1), the outer walls of the rotating rollers (2) being evenly sleeved with conveyor belts (3), a motor (4) being mounted on one side of one of the rotating rollers (2), the motor (4) being connected to an external power source via a wire, and the outer walls of both sides of the rotating rollers (2) being provided with drive components; The detection mechanism comprises a detection device (5) arranged at the top of the device base (1), a collection component is arranged at the bottom of the detection device (5), and an adjustment component is arranged at the top of the detection device (5).

2. The PCB board drilling visual inspection device according to claim 1, characterized in that: The driving assembly comprises a synchronous belt (6) arranged on the outer walls of both sides of the rotating roller (2), the other end of the synchronous belt (6) is sleeved with a connecting rod (7), one end of the connecting rod (7) is fixedly installed with a rotating block (8), the end of the rotating block (8) away from the connecting rod (7) is rotatably installed with a first connecting bar (9), the other end of the first connecting bar (9) is rotatably installed with a pushing block (10), one side of the pushing block (10) is in contact with a driving rod (11), one side of the driving rod (11) is fixedly installed with a pushing plate (12), both sides of the pushing plate (12) are provided with intermittent assemblies, the inner wall of the pushing plate (12) is slidably installed with a sliding block (13), and one side of the sliding block (13) is fixedly installed with a correction plate (14).

3. The PCB board drilling visual inspection device according to claim 2, characterized in that: The pushing block (10) is provided with an inclined portion on one side close to the driving rod (11), and the driving rod (11) is slidably mounted on the inner wall of the limiting groove (15), and the limiting groove (15) is opened at the top of the device base (1).

4. The PCB board drilling visual inspection device according to claim 3, characterized in that: The intermittent assembly includes support plates (16) arranged on both sides of the push plate (12), a fixed plate (17) is installed on one side of the support plate (16), and the fixed plate (17) is fixedly installed on the top of the device base (1). The limiting groove (15) and the fixed plate (17) are connected by a return spring (18), and the return spring (18) is wound around the outer wall of the protective round rod (19), and the protective round rod (19) is fixedly installed on one side of the fixed plate (17).

5. The PCB board drilling visual inspection device according to claim 2, characterized in that: The sliding block (13) and the pushing plate (12) are connected via a buffer spring, and both ends of the inner side of the pushing plate (12) are fixedly mounted with limit blocks (20), and corresponding grooves are provided on both sides of the sliding block (13).

6. The PCB board drilling visual inspection device according to claim 1, characterized in that: The adjustment assembly comprises a measuring plate (21) arranged at the top of the detection device (5), two measuring plates (21) are symmetrically installed, a slider is fixedly installed at the bottom end of each measuring plate (21), a bidirectional screw rod (22) is threadedly installed on the inner wall of each slider, a hand wheel (23) is fixedly installed at one end of each bidirectional screw rod (22), a second connecting bar (24) is fixedly installed on one side of each measuring plate (21), a limiting plate (25) is fixedly installed at the other end of each second connecting bar (24), and the limiting plate (25) abuts against one end of the correction plate (14).

7. The PCB board drilling visual inspection device according to claim 6, characterized in that: A guide rod (26) is fixedly mounted on one end of the correction plate (14) away from the limiting plate (25), and the guide rod (26) is slidably mounted on the inner wall of a guide seat (27), and the guide seat (27) is fixedly mounted on the top of the device base (1).

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