PCB (Printed Circuit Board) double-track double-sided detection equipment

Abstract

The utility model relates to PCB double-track double-sided detection equipment, which comprises a working frame, a track assembly, an upper camera module and a lower camera module, and is characterized in that a first track and a second track of the track assembly are arranged on the working frame at an interval, and the upper camera module and the lower camera module are arranged in a matched manner; according to the PCB double-track double-sided detection equipment, the upper surfaces and the lower surfaces of the circuit boards on the first track and the second track can be detected at the same time, the PCB double-track double-sided detection equipment can adapt to a double-track automatic conveying line and can also adapt to a single-track automatic conveying line through the arrangement of the first track and the second track, the compatibility of the PCB double-track double-sided detection equipment is improved, and the detection efficiency is improved. Detection can be carried out in modes of double-track double-sided detection, double-track single-sided detection and single-track double-sided detection.

Description

Technical Field

[0001] This utility model relates to the field of visual inspection equipment technology, and in particular to a PCB dual-track double-sided inspection device. Background Technology

[0002] As an indispensable and important component of electronic products, PCBs are gradually developing towards miniaturization, densification and integration. In the PCB manufacturing process, it is necessary to accurately detect and mark defects such as scratches, dents and foreign objects in the gold and copper areas of the PCB. Only after both sides of the PCB pass the inspection can it enter the next production stage.

[0003] As machine vision technology matures and costs continue to decrease, PCB inspection workshops are beginning to use vision inspection equipment to perform quality checks on PCBs. High-precision resolution cameras capture images of the PCB surface, which are then compared with standard images. Combined with software algorithms, this allows for the accurate screening of defective PCBs, significantly improving inspection efficiency. During quality inspection, PCBs need to be transported to the inspection platform of the PCB inspection equipment via a conveyor system. However, existing PCB inspection equipment can only be used with single-track automated conveyor lines, making it difficult to adapt to the different types of automated conveyor lines used in PCB automated production processes. Utility Model Content

[0004] Therefore, it is necessary to provide a PCB dual-track double-sided inspection device.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A PCB dual-track double-sided inspection device, comprising:

[0006] Work rack;

[0007] A track assembly, comprising: a first track and a second track, wherein the first track and the second track are spaced apart on the work frame;

[0008] The upper camera module includes: a first horizontal sliding plate, a first vertical sliding plate, and a first camera. The first horizontal sliding plate is slidably disposed on the work frame, and the first vertical sliding plate is slidably disposed on the first horizontal sliding plate. The sliding direction of the first horizontal sliding plate on the work frame is perpendicular to the sliding direction of the first vertical sliding plate on the first horizontal sliding plate. The first camera is disposed on the first vertical sliding plate and is spaced apart from the first side of the track assembly.

[0009] The lower camera module includes a second horizontal sliding plate, a second vertical sliding plate, and a second camera. The second horizontal sliding plate is slidably disposed on the work frame, and the second vertical sliding plate is slidably disposed on the second horizontal sliding plate. The sliding direction of the second horizontal sliding plate on the work frame is perpendicular to the sliding direction of the second vertical sliding plate on the second horizontal sliding plate. The second camera is disposed on the second vertical sliding plate and is spaced apart from the second side of the track assembly.

[0010] In one embodiment, the first track includes: two first guide rail plates, which are spaced apart on the work frame. Each first guide rail plate is rotatably provided with two first pulleys, and a first conveyor belt is rotatably wound around the two first pulleys. Each first guide rail plate is provided with a first driver, which is drivenly connected to one of the first pulleys.

[0011] In one embodiment, the second track includes: two second guide rail plates, which are spaced apart on the work frame; each second guide rail plate is rotatably provided with two second pulleys, and a second conveyor belt is rotatably wound around the two second pulleys; each second guide rail plate is provided with a second driver, which is drivenly connected to one of the second pulleys.

[0012] In one embodiment, two first limiting rods are spaced apart on the first guide rail plate, and the two first limiting rods move toward or away from the first conveyor belt. Two third drivers are spaced apart on the first guide rail plate, and each third driver is driven connected to one of the first limiting rods.

[0013] In one embodiment, two second limiting rods are spaced apart on the second guide rail plate, and the two second limiting rods move toward or away from the direction of the second conveyor belt. Two fourth drivers are spaced apart on the second guide rail plate, and each of the fourth drivers is driven to connect with one of the second limiting rods.

[0014] In one embodiment, a first first guide rail plate is fixedly mounted on the work frame, and a second first guide rail plate is slidably mounted on the work frame. The second first guide rail plate moves towards or away from the first first guide rail plate. The work frame is provided with a first slide rail, and the second first guide rail plate is provided with a first slider, which is slidably mounted on the first slide rail.

[0015] In one embodiment, two second guide rail plates are slidably disposed on the work frame, and the two second guide rail plates move toward or away from the second first guide rail plate. Each second guide rail plate is provided with a second slider, and the second slider is slidably disposed on the first guide rail.

[0016] In one embodiment, the PCB dual-track double-sided inspection device further includes: a first lead screw and two second lead screws, the first lead screw and the two second lead screws being rotatably mounted on the work frame in sequence, a first lead screw nut being screwed onto the first lead screw and the first lead screw nut being connected to a second first guide rail plate, and a second lead screw nut being screwed onto each second lead screw and each second lead screw nut being connected to a second guide rail plate.

[0017] In one embodiment, the PCB dual-track double-sided inspection device further includes: a fifth driver and two sixth drivers, the fifth driver and the two sixth drivers are respectively disposed on the work stand, the fifth driver is connected to the first lead screw drive, and each of the sixth drivers is connected to a second lead screw drive.

[0018] In one embodiment, a first lightbox is provided on the first vertical moving plate, and the first lightbox is spaced apart from the first camera; a second lightbox is provided on the second vertical moving plate, and the second lightbox is spaced apart from the second camera.

[0019] The beneficial effects of this utility model are as follows: The PCB dual-track double-sided inspection device provided by this utility model has a first track and a second track arranged at intervals on a work frame, and is equipped with an upper camera module and a lower camera module. It can simultaneously inspect the upper and lower surfaces of the circuit board located on the first track and the second track. By setting the first track and the second track, it can be adapted to both dual-track automatic conveyor lines and single-track automatic conveyor lines, thereby improving the compatibility of the PCB dual-track double-sided inspection device. It can perform inspection in the modes of dual-track double-sided inspection, dual-track single-sided inspection, and single-track double-sided inspection. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of a PCB dual-track double-sided inspection device according to one embodiment;

[0022] Figure 2 This is a schematic diagram of the structure of a PCB dual-track double-sided inspection device according to one embodiment;

[0023] Figure 3 This is a schematic diagram of the upper and lower camera modules in one embodiment;

[0024] Figure 4 This is a schematic diagram of the structure of a track assembly according to one embodiment;

[0025] Figure 5 This is a schematic diagram of the structure of a track assembly according to one embodiment.

[0026] In the attached diagram, 10 is a PCB dual-track double-sided inspection device; 100 is a work frame; 110 is a track assembly; 200 is a first track; 210 is a first guide rail plate; 220 is a first pulley; 230 is a first conveyor belt; 240 is a first driver; 300 is a second track; 310 is a second guide rail plate; 320 is a second pulley; 330 is a second conveyor belt; 340 is a second driver; 400 is an upper camera module; 410 is a first horizontal moving plate; 420 is a first vertical moving plate; 430 is a first camera; 440 is a first lightbox; 500 is a lower camera module; 510 is a second horizontal moving plate; 520 is a second vertical moving plate; 530 is a second camera; 540 is a second lightbox; 610 is a first limiting rod; 611 is a third driver; 620 is a second limiting rod; 621 is a fourth driver; 700 is a first slide rail; 710 is a first slider; and 720 is a second slider. Detailed Implementation

[0027] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments of the present invention can be combined with each other. The technical solutions of the present invention will be further described below with reference to the accompanying drawings of the embodiments. The present invention is not limited to the specific embodiments described below.

[0028] It should be understood that the same or similar reference numerals in the accompanying drawings of the embodiments correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "front," "rear," "left," "right," "top," and "bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms describing positional relationships in the accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0029] In one embodiment, such as Figure 1 , Figure 2 and Figure 3 As shown, a PCB dual-track double-sided inspection device 10 includes: a work frame 100, a track assembly 110, an upper camera module 400, and a lower camera module 500. The track assembly 110 includes: a first track 200 and a second track 300, which are spaced apart on the work frame 100. The upper camera module 400 includes: a first horizontal plate 410, a first vertical plate 420, and a first camera 430. The first horizontal plate 410 is slidably disposed on the work frame 100, and the first vertical plate 420 is slidably disposed on the first horizontal plate 410. The sliding direction of the first horizontal plate 410 on the work frame 100 is the same as the sliding direction of the first vertical plate 420 on the first horizontal plate 410. The directions are perpendicular to each other. The first camera 430 is mounted on the first vertical moving plate 420. The first camera 430 is spaced apart from the first side of the track assembly 110. The lower camera module 500 includes: a second horizontal moving plate 510, a second vertical moving plate 520, and a second camera 530. The second horizontal moving plate 510 is slidably mounted on the work frame 100. The second vertical moving plate 520 is slidably mounted on the second horizontal moving plate 510. The sliding direction of the second horizontal moving plate 510 on the work frame 100 is perpendicular to the sliding direction of the second vertical moving plate 520 on the second horizontal moving plate 510. The second camera 530 is mounted on the second vertical moving plate 520. The second camera 530 is spaced apart from the second side of the track assembly 110.

[0030] In this embodiment, the first track 200 and the second track 300 of the track assembly 110 are spaced apart on the work frame 100. The conveying directions of the first track 200 and the second track 300 are parallel and the same. An upper camera module 400 and a lower camera module 500 are provided on the work frame 100. The upper camera module 400 is located above the first track 200 and the second track 300, and the lower camera module 500 is located below the first track 200 and the second track 300. The first transverse plate 410 of the upper camera module 400 moves along the X-axis on the work frame 100. The first vertical moving plate 420 moves along the Y-axis on the first horizontal moving plate 410, which can drive the first camera 430 to move in the X and Y axes. Correspondingly, the second horizontal moving plate 510 of the lower camera module 500 moves along the X-axis on the work frame 100, and the second vertical moving plate 520 moves along the Y-axis on the second horizontal moving plate 510, which can drive the second camera 530 to move in the X and Y axes. This allows simultaneous detection of the upper and lower surfaces of the circuit boards located on the first track 200 and the second track 300. It is worth noting that the methods of driving the first horizontal moving plate 410 to slide on the work frame 100, the first vertical moving plate 420 to slide on the first horizontal moving plate 410, the second horizontal moving plate 510 to slide on the work frame 100, and the second vertical moving plate 520 to slide on the second horizontal moving plate 510 are techniques known to those skilled in the art and are achievable. In this embodiment, they are not described in detail. For example, they can be achieved by the cooperation of a motor, a lead screw, and a lead screw nut.

[0031] In this embodiment, a first track 200 and a second track 300 are spaced apart on the work rack 100. While adapting to a dual-track automatic conveyor line, that is, two circuit boards can be inspected at a time, it can also adapt to a single-track automatic conveyor line, that is, one circuit board can be inspected at a time. This improves the compatibility of the PCB dual-track double-sided inspection equipment 10 with the automatic conveyor line, and can perform inspection in the modes of dual-track double-sided inspection, dual-track single-sided inspection, and single-track double-sided inspection.

[0032] In one embodiment, such as Figure 4 and Figure 5As shown, the first track 200 includes: two first guide rail plates 210, which are spaced apart on the work frame 100. Each first guide rail plate 210 has two first pulleys 220 rotatably mounted at a distance from each other, and a first conveyor belt 230 is rotatably wound around each of the two first pulleys 220. Each first guide rail plate 210 is equipped with a first driver 240, which is rotatably connected to one of the first pulleys 220. Specifically, the two first guide rail plates 210 are arranged opposite to each other on the work frame 100, and a first conveyor belt 230 is rotatably mounted on the opposite side of each of the two first guide rail plates 210. That is, the first conveyor belt 230 is wound around the two rotatably mounted first pulleys 220. The first driver 240 drives one of the first pulleys 220 to rotate, thereby driving the first conveyor belt 230 to move. The first driver 240 is a motor, so the first track 200 can transport circuit boards by belt conveying.

[0033] In one embodiment, such as Figure 4 and Figure 5 As shown, the second track 300 includes: two second guide rail plates 310, which are spaced apart on the work frame 100. Each second guide rail plate 310 has two second pulleys 320 rotatably mounted at a distance from each other, and a second conveyor belt 330 is rotatably wound around each of the two second pulleys 320. Each second guide rail plate 310 is equipped with a second driver 340, which is rotatably connected to one of the second pulleys 320. Specifically, the two second guide rail plates 310 are arranged opposite to each other on the work frame 100, and a second conveyor belt 330 is rotatably mounted on the opposite side of each second guide rail plate 310. That is, the second conveyor belt 330 is wound around the two rotatably mounted second pulleys 320. The second driver 340 drives one of the second pulleys 320 to rotate, thereby driving the second conveyor belt 330 to move. The second driver 340 is a motor, thus enabling the second track 300 to transport circuit boards via belt conveying.

[0034] In one embodiment, such as Figure 5As shown, two first limiting rods 610 are spaced apart on the first guide rail plate 210. The two first limiting rods 610 move towards or away from the first conveyor belt 230. Two third drivers 611 are spaced apart on the first guide rail plate 210, and each third driver 611 is drivenly connected to one of the first limiting rods 610. Specifically, by movably arranging two first limiting rods 610 on the first guide rail plate 210, the distance between the two first limiting rods 610 is adapted to the width of the circuit board. The first limiting rods 610 can play a limiting role. The third driver 611 is a slide cylinder, that is, the third driver 611 drives the first limiting rods 610 to move forward onto the first conveyor belt 230, blocking the circuit board on the first conveyor belt 230, so that the circuit board can be positioned on the first track 200, which facilitates the upper camera module 400 and the lower camera module 500 to perform double-sided inspection of the circuit board on the first track 200.

[0035] In one embodiment, such as Figure 5 As shown, two second limiting rods 620 are spaced apart on the second guide rail plate 310. The two second limiting rods 620 move towards or away from the second conveyor belt 330. Two fourth drivers 621 are spaced apart on the second guide rail plate 310, and each fourth driver 621 is drivenly connected to one of the second limiting rods 620. Specifically, by movably arranging two second limiting rods 620 on the second guide rail plate 310, the distance between the two second limiting rods 620 is adapted to the width of the circuit board. The second limiting rods 620 can play a limiting role. The fourth driver 621 is a slide cylinder, that is, the fourth driver 621 drives the second limiting rods 620 to move forward onto the second conveyor belt 330, blocking the circuit board on the second conveyor belt 330, so that the circuit board can be positioned on the second track 300, which facilitates the upper camera module 400 and the lower camera module 500 to perform double-sided inspection of the circuit board on the second track 300.

[0036] In one embodiment, such as Figure 5As shown, the first first guide rail plate 210a is fixedly mounted on the work frame 100, and the second first guide rail plate 210b is slidably mounted on the work frame 100. The second first guide rail plate 210b can move closer to or away from the first first guide rail plate 210a. The work frame 100 is provided with a first slide rail 700, and the second first guide rail plate 210b is provided with a first slider 710, which is slidably mounted on the first slide rail 700. Specifically, by fixing the first first guide rail plate 210a on the work frame 100, and by allowing the second first guide rail plate 210b to move closer to or away from the first first guide rail plate 210a via the first slider 710 and the first slide rail 700, the distance between the two first guide rail plates 210 can be adjusted to adjust the gauge of the first track 200. This allows the first track 200 to transport circuit boards of various specifications, thereby enabling the testing of circuit boards of various specifications.

[0037] In one embodiment, such as Figure 5 As shown, two second guide rail plates 310 are slidably mounted on the work frame 100. The two second guide rail plates 310 move closer to or away from the second first guide rail plate 210b. Each second guide rail plate 310 is provided with a second slider 720, which is slidably mounted on the first slide rail 700. Specifically, by sliding the two second guide rail plates 310 on the work frame 100, and by moving closer to or away from the second first guide rail plate 210b via the second slider 720 and the first slide rail 700, the distance between the first track 200 and the second track 300 can be adjusted, and the track gauge of the second track 300 can also be adjusted. This allows the second track 300 to transport circuit boards of various specifications, thereby enabling the testing of circuit boards of various specifications.

[0038] In one embodiment, the PCB dual-track double-sided inspection device 10 further includes: a first lead screw and two second lead screws, the first lead screw and the two second lead screws being rotatably mounted on the work frame 100 in sequence, a first lead screw nut being screwed onto the first lead screw, and the first lead screw nut being connected to a second first guide rail plate 210, a second lead screw nut being screwed onto each second lead screw, and each second lead screw nut being connected to a second guide rail plate 310. Specifically, the first lead screw and two second lead screws are rotatably mounted on the work frame 100. The first lead screw nut screwed onto the first lead screw is connected to the second first guide rail plate 210, and the second lead screw nut screwed onto the second lead screw is connected to the second guide rail plate 310. By driving the first and second lead screws to rotate, the first lead screw nut and the second lead screw nut can move closer to or away from the second first guide rail plate 210 on the first and second lead screws, respectively. This can drive the second first guide rail plate 210 to slide closer to or away from the first first guide rail plate 210 and drive the two second guide rail plates 310 to slide closer to or away from the second first guide rail plate 210, thereby adjusting the track gauge of the first track 200 and the second track 300.

[0039] In one embodiment, the PCB dual-track double-sided inspection device 10 further includes a fifth driver and two sixth drivers, which are respectively disposed on the workbench 100. The fifth driver is driven by the first lead screw, and each of the sixth drivers is driven by a second lead screw. Specifically, by respectively providing a fifth driver and a sixth driver, both of which are motors, it is convenient to start the fifth driver to drive the first lead screw to rotate or start the sixth driver to drive the second lead screw to rotate to adjust the track gauge of the first track 200 and the second track 300 as needed.

[0040] In one embodiment, such as Figure 3 As shown, a first lightbox 440 is provided on the first vertical moving plate 420, and the first lightbox 440 is spaced apart from the first camera 430. A second lightbox 540 is provided on the second vertical moving plate 520, and the second lightbox 540 is spaced apart from the second camera 530. Specifically, the first lightbox 440 is located below the first camera 430, and the second lightbox 540 is located below the second camera 530. By providing the first lightbox 440 and the second lightbox 540, shadow-free and glare-free lighting conditions can be provided for the circuit board, enabling the first camera 430 and the second camera 530 to obtain better image quality, ensuring that the detection algorithm can accurately identify minute defects on the circuit board and improving the reliability of the detection.

[0041] Compared with the prior art, the present invention has at least the following advantages:

[0042] This utility model provides a PCB dual-track double-sided inspection device. The first and second tracks of the track assembly are set at intervals on the work frame. With the cooperation of the upper camera module and the lower camera module, it can simultaneously inspect the upper and lower surfaces of the circuit board located on the first and second tracks. By setting the first and second tracks, it can be adapted to both dual-track and single-track automatic conveyor lines, thereby improving the compatibility of the PCB dual-track double-sided inspection device. It can perform inspection in dual-track double-sided inspection, dual-track single-sided inspection, and single-track double-sided inspection modes.

[0043] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A PCB dual-track double-sided inspection device, characterized in that, include: Work rack; A track assembly, comprising: a first track and a second track, wherein the first track and the second track are spaced apart on the work frame; The upper camera module includes: a first horizontal sliding plate, a first vertical sliding plate, and a first camera. The first horizontal sliding plate is slidably disposed on the work frame, and the first vertical sliding plate is slidably disposed on the first horizontal sliding plate. The sliding direction of the first horizontal sliding plate on the work frame is perpendicular to the sliding direction of the first vertical sliding plate on the first horizontal sliding plate. The first camera is disposed on the first vertical sliding plate and is spaced apart from the first side of the track assembly. The lower camera module includes a second horizontal sliding plate, a second vertical sliding plate, and a second camera. The second horizontal sliding plate is slidably disposed on the work frame, and the second vertical sliding plate is slidably disposed on the second horizontal sliding plate. The sliding direction of the second horizontal sliding plate on the work frame is perpendicular to the sliding direction of the second vertical sliding plate on the second horizontal sliding plate. The second camera is disposed on the second vertical sliding plate and is spaced apart from the second side of the track assembly.

2. The PCB dual-track double-sided inspection equipment according to claim 1, characterized in that, The first track includes: two first guide rail plates, which are spaced apart on the work frame. Each first guide rail plate is rotatably provided with two first pulleys, and a first conveyor belt is rotatably wound around the two first pulleys. Each first guide rail plate is provided with a first driver, which is drivenly connected to one of the first pulleys.

3. The PCB dual-track double-sided inspection equipment according to claim 2, characterized in that, The second track includes: two second guide rail plates, which are spaced apart on the work frame. Each second guide rail plate is rotatably equipped with two second pulleys, and a second conveyor belt is rotatably wound around the two second pulleys. Each second guide rail plate is equipped with a second driver, which is drivenly connected to one of the second pulleys.

4. The PCB dual-track double-sided inspection equipment according to claim 3, characterized in that, Two first limiting rods are spaced apart on the first guide rail plate. The two first limiting rods move towards or away from the first conveyor belt. Two third drivers are spaced apart on the first guide rail plate. Each third driver is driven to connect to one of the first limiting rods.

5. The PCB dual-track double-sided inspection equipment according to claim 4, characterized in that, Two second limiting rods are spaced apart on the second guide rail plate. The two second limiting rods move towards or away from the second conveyor belt. Two fourth drivers are spaced apart on the second guide rail plate. Each fourth driver is driven to connect to one of the second limiting rods.

6. The PCB dual-track double-sided inspection equipment according to claim 3, characterized in that, The first first guide rail plate is fixedly mounted on the work frame, and the second first guide rail plate is slidably mounted on the work frame. The second first guide rail plate moves towards or away from the first first guide rail plate. The work frame is provided with a first slide rail, and the second first guide rail plate is provided with a first slider, which is slidably mounted on the first slide rail.

7. The PCB dual-track double-sided inspection equipment according to claim 6, characterized in that, Two second guide rail plates are slidably disposed on the work frame. The two second guide rail plates move towards or away from the second first guide rail plate. Each second guide rail plate is provided with a second slider, which is slidably disposed on the first guide rail.

8. The PCB dual-track double-sided inspection equipment according to claim 7, characterized in that, Also includes: A first lead screw and two second lead screws are rotatably mounted on the work frame. A first lead screw nut is screwed onto the first lead screw, and the first lead screw nut is connected to a second first guide rail plate. A second lead screw nut is screwed onto each second lead screw, and each second lead screw nut is connected to a second guide rail plate.

9. The PCB dual-track double-sided inspection device according to claim 8, characterized in that, Also includes: A fifth drive and two sixth drives are respectively disposed on the work frame. The fifth drive is connected to the first lead screw drive, and each of the sixth drives is connected to a second lead screw drive.

10. The PCB dual-track double-sided inspection device according to claim 1, characterized in that, A first lightbox is provided on the first vertical moving plate, and the first lightbox is spaced apart from the first camera. A second lightbox is provided on the second vertical moving plate, and the second lightbox is spaced apart from the second camera.

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