Optical detection equipment for circuit board

Abstract

The invention discloses circuit board optical detection equipment, and relates to the technical field of circuit board detection equipment, and the circuit board optical detection equipment comprises a machine table; the measuring table is arranged on the machine table, the measuring table is provided with a placing area, and the area range of the placing area is adjustable; the displacement mechanism is arranged on the machine table; the device comprises a displacement mechanism and at least two camera shooting mechanisms, the at least two camera shooting mechanisms are arranged on the displacement mechanism at intervals, each camera shooting mechanism comprises a light source part and a first camera, and the light source parts are used for irradiating ultraviolet light to a circuit board; the technical scheme provided by the invention has the technical effects that the colloid is blue under the irradiation of ultraviolet light, and other electronic elements on the circuit board are black, so that the contrast ratio between the electronic elements on the image of the circuit board shot by the first camera and the colloid is improved, the defect of the colloid can be clearly detected, and the detection accuracy is improved. And the production efficiency of the circuit board is improved.

Description

Technical Field

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

[0002] During the production of circuit boards, electronic components are bonded to the circuit boards with colloids. During the inspection of the production of circuit boards, workers use magnifying glasses to check whether there is too much or too little colloid, the presence or absence of colloid, glue overflow, and coating ratio. Since the color of the electronic components on the circuit board, the background color of the circuit board itself, and the color of the colloid are all black, and the size characteristics are very small. Therefore, the existing manual inspection method is inefficient and labor-intensive, and is prone to missed inspections and misjudgments, which in turn affects the production efficiency of the circuit board. Summary of the invention

[0003] The main purpose of the present invention is to provide a circuit board optical detection device, aiming to improve the production efficiency of circuit boards.

[0004] To achieve the above-mentioned purpose, the circuit board optical inspection equipment proposed by the present invention includes a machine platform;

[0005] A measuring platform is arranged on the machine platform, the measuring platform has a placement area for placing circuit boards, and the area range of the placement area is adjustable; a displacement mechanism is arranged on the machine platform; and at least two camera mechanisms, at least two of which are arranged on the displacement mechanism at intervals, and the camera mechanism is located above the placement area for detecting circuit boards, the camera mechanism includes a light source and a first camera, the light source is used to irradiate ultraviolet light to the circuit board, and part of the first camera is passed through the light source so that the shooting range of the first camera and the irradiation range of the light source at least partially overlap; the displacement mechanism is used to drive the camera mechanism to move along the first direction, the second direction and the third direction respectively, and the displacement mechanism is also used to drive the camera mechanism to rotate; wherein, the first direction, the second direction and the third direction intersect with each other.

[0006] In one embodiment, the light source part includes a first lamp shade portion and a second lamp shade portion, the first lamp shade portion having a first side wall connected to the displacement mechanism, the first lamp shade portion being connected to the displacement mechanism, the second lamp shade portion having a second side wall facing the circuit board, the second lamp shade portion being protruded from the first lamp shade portion along a direction from the first side wall toward the second side wall, the first lamp shade portion and the second lamp shade portion are both provided with lamp beads, the first lamp shade portion and the second lamp shade portion both have an arc-shaped light-emitting surface on one side facing the circuit board, and the lamp beads are provided on the light-emitting surface.

[0007] In one embodiment, the second lampshade portion has notches on two sides along the first direction, and the two notches are respectively located on two sides of the first lampshade portion.

[0008] In one embodiment, the second lamp shade portion includes a third lamp shade portion and a fourth lamp shade portion, the fourth lamp shade portion protrudes from the third lamp shade portion along the direction of the first side wall toward the second side wall, the third lamp shade portion protrudes from the first lamp shade portion along the direction of the first side wall toward the second side wall, the outer diameter of the third lamp shade portion is larger than that of the first lamp shade portion, and the outer diameter of the fourth lamp shade portion is larger than that of the third lamp shade portion.

[0009] In one embodiment, the lamp beads include first lamp beads for irradiating ultraviolet light and second lamp beads for irradiating white light, the light-emitting surface of the first lamp shade portion and the light-emitting surface of the third lamp shade portion are both provided with the first lamp beads, a plurality of first lamp beads are arranged at intervals and in a ring shape around the light-emitting surfaces of the first lamp shade portion and the third lamp shade portion, the light-emitting surface of the fourth lamp shade portion is provided with the second lamp beads, a plurality of second lamp beads are arranged at intervals and in a ring shape around the light-emitting surface of the fourth lamp shade portion.

[0010] In one embodiment, the circuit board optical inspection equipment also includes a controller, which is electrically connected to the camera mechanism, and the camera mechanism is used to detect the proportion of black glue coating on electronic components on the circuit board. The first camera is used to photograph the circuit board under the illumination of the light source to form an image, and the image is used to display the electronic components as black and the black glue as blue.

[0011] In one embodiment, the power of the light source is 800W to 1200W; and / or, the first lamp bead and the second lamp bead are both configured as plug-in LEDs or surface-mount LEDs; the distance between the first lamp bead and the second lamp bead along the third direction is set to 5mm to 15mm.

[0012] In one embodiment, the displacement mechanism includes a mounting assembly, which includes a mounting base, a first drive module and two mounting seats, the first drive module is arranged on the mounting base, the first drive module drives and connects the two mounting seats, and one of the camera mechanisms is movably arranged on one of the mounting seats, and the first drive module is used to adjust the distance between the two mounting seats.

[0013] In one embodiment, the mounting assembly further includes a light shield, which is disposed on the periphery of the light source and the first camera, and the side of the light shield close to the circuit board has an opening for the light source to illuminate the circuit board and for the first camera to photograph the circuit board; and / or, the camera mechanism further includes a second camera, which is spaced apart from the first camera along the first direction, the second camera is located outside the light shield, and the second camera is used to position the circuit board.

[0014] In one embodiment, the circuit board optical inspection equipment also includes a second driving module, the measuring platform includes a plurality of clamping parts spaced apart along the first direction, the placement area is surrounded by two adjacent clamping parts, and the second driving module drives and connects the plurality of clamping parts to adjust the area range of the placement area.

[0015] The technical solution of the present invention can detect the colloid of electronic components on the circuit board under the drive of the displacement mechanism by adopting the first camera and the light source. The colloid appears blue under the irradiation of ultraviolet light, and other electronic components on the circuit board appear black, thereby improving the contrast between the electronic components and the colloid in the image of the circuit board taken by the first camera, so that the present application can clearly detect the defects of the colloid, thereby improving the production efficiency of the circuit board. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0017] Figure 1 A schematic structural diagram of an embodiment of a circuit board optical inspection device provided by the present invention;

[0018] Figure 2 A top view of the structure of an embodiment of a circuit board optical detection device provided by the present invention;

[0019] Figure 3 A schematic structural diagram of a fifth driving module, a sixth driving module and a camera mechanism in an embodiment of a circuit board optical inspection device provided by the present invention;

[0020] Figure 4 A schematic structural diagram of the fifth driving module, the sixth driving module and the camera mechanism from another angle in one embodiment of the circuit board optical inspection device provided by the present invention;

[0021] Figure 5A schematic structural diagram of a light source component in an embodiment of a circuit board optical inspection device provided by the present invention;

[0022] Figure 6 This is a schematic structural diagram from another angle of the light source component in one embodiment of the circuit board optical inspection device provided by the present invention.

[0023] Description of Figure Numbers:

[0024] 1. Machine; 2. Measuring table; 21. Placement area; 22. Clamping part; 3. Displacement mechanism; 31. Mounting assembly; 311. Mounting base; 312. First drive module; 3121. Third drive; 3122. Connector; 313. Mounting seat; 314. Light shield; 32. Frame; 33. Third drive module; 331. Second connecting seat; 332. First drive; 34. Fourth drive module; 341. First connecting seat; 35. Fifth drive module; 36 , the sixth driving module; 361, the second driver; 4, the camera mechanism; 41, the light source; 411, the first lampshade; 4111, the first side wall; 412, the second lampshade; 4121, the second side wall; 4122, the notch; 4123, the third lampshade; 4124, the fourth lampshade; 413, the lamp beads; 4131, the first lamp beads; 4132, the second lamp beads; 414, the light-emitting surface; 42, the first camera; 43, the second camera; 5, the second driving module.

[0025] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0026] The following will be combined with the 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0027] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0028] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0029] The invention provides a circuit board optical detection device.

[0030] See also Figure 1 In one embodiment of the present invention, the circuit board optical inspection device includes a machine 1, a measuring table 2, a displacement mechanism 3 and a camera mechanism 4; the measuring table 2 is arranged on the machine 1, and the measuring table 2 has a placement area 21 for placing the circuit board, and the area range of the placement area 21 is adjustable; the displacement mechanism 3 is arranged on the machine 1; at least two camera mechanisms 4 are arranged on the displacement mechanism 3 at intervals, and the camera mechanism 4 is located above the placement area 21 for inspecting the circuit board, and the camera mechanism 4 includes a light source 41 and a first camera 42, the light source 41 is used to irradiate ultraviolet light to the circuit board, and part of the first camera 42 is penetrated by the light source 41, so that the shooting range of the first camera 42 and the irradiation range of the light source 41 at least partially overlap; the displacement mechanism 3 is used to drive the camera mechanism 4 to move along the first direction, the second direction and the third direction respectively, and the displacement mechanism 3 is also used to drive the camera mechanism 4 to rotate; wherein, the first direction, the second direction and the third direction intersect each other.

[0031] The technical solution of the present invention can detect the colloid of the electronic components on the circuit board under the drive of the displacement mechanism 3 by adopting the first camera 42 and the light source 41. The colloid appears blue under the irradiation of ultraviolet light, and other electronic components on the circuit board appear black, thereby improving the contrast between the electronic components and the colloid in the image of the circuit board taken by the first camera 42, so that the present application can clearly detect the defects of the colloid, thereby improving the production efficiency of the circuit board.

[0032] In this embodiment, the measuring table 2 has a placement area 21 for placing a circuit board. The area range of the placement area 21 can be adjusted by designing the placement area 21 so that the placement area 21 is more suitable for placing circuit boards of different sizes, thereby improving the efficiency of circuit board detection. By setting a part of the first camera 42 to penetrate the light source 41, the shooting range of the first camera 42 and the irradiation range of the light source 41 are at least partially overlapped, so that the ultraviolet light irradiated by the light source 41 can better provide illumination for the first camera 42, thereby improving the clarity of the circuit board image captured by the first camera 42. This application uses the light source 41 to provide ultraviolet light to irradiate the circuit board, and the colloid, electronic components and circuit board respectively display different colors under the irradiation of ultraviolet light, thereby improving the contrast of the colloid, electronic components and circuit board in the image captured by the first camera 42, thereby facilitating the first camera 42 to clearly capture the arrangement of the colloid and electronic components on the circuit board, thereby solving the problem that conventional 2D AVI equipment or 3D AVI equipment cannot detect colloid defects on electronic components. The present application utilizes the short wavelength of ultraviolet light, and the ultraviolet light can be fully diffusely reflected on the black colloid, black electronic components and black circuit board, respectively, so as to facilitate the distinction between the black colloid, black electronic components and black circuit board. The black colloid is made of different materials from the black electronic components and black circuit board, and the colloid can be displayed as blue under the irradiation of ultraviolet light, and the bottom plate of the electronic components and circuit board can be displayed as black under the irradiation of ultraviolet light, so as to make the contrast of the colloid, electronic components and circuit board in the image taken by the first camera 42 large, so as to facilitate the present application to clearly detect the defects of the colloid such as too much glue, too little glue, overflowing glue, and broken glue, and can also accurately measure the length ratio of the missing glue.

[0033] In this embodiment, the displacement mechanism 3 may include a frame 32, a third driving module 33, a fourth driving module 34, a fifth driving module 35, a sixth driving module 36 and a moving seat (not shown), and the moving seat is used to install the camera mechanism 4, the fifth driving module 35 and the sixth driving module 36. The frame 32 is arranged on the machine 1, the third driving module 33 is arranged on the frame 32, the fourth driving module 34 is movably arranged on the third driving module 33 along the first direction, the moving seat is movably arranged on the fourth driving module 34 along the second direction, the fifth driving module 35, the sixth driving module 36 and the camera mechanism 4 are arranged on the moving seat, and the sixth driving module 36 is driven to connect the camera mechanism 4. The two ends of the bottom of the frame 32 are respectively arranged on the machine 1, so as to improve the stability of the fourth driving module 34 moving on the third driving module 33. The fourth driving module 34 includes a first connecting seat 341, and the moving seat can be arranged on the first connecting seat 341. The third driving module 33 includes a second connecting seat 331 and a first driver 332 arranged on the frame 32. The first driver 332 is drivingly connected to the first connecting seat 341 to drive the first connecting seat 341 and the camera mechanism 4 to move along the first direction. A first slider (not shown) can be arranged on the side of the first connecting seat 341 close to the third driving module 33, and the second connecting seat 331 can be provided with a first slide rail (not shown) that cooperates with the first slider. The first slider can be movably arranged on the first slide rail so that the first connecting seat 341 can be movably arranged on the second connecting seat 331. The fourth driving module 34 is used to drive the camera mechanism 4 to move along the second direction. The driving connection between the fourth driving module 34 and the moving seat is the same as the driving connection between the fourth driving module 34 and the third driving module 33, and will not be repeated here. The fifth driving module 35 is connected to the camera mechanism 4 by driving. The fifth driving module 35 is used to drive the camera mechanism 4 to move along the third direction. The driving connection between the fifth driving module 35 and the camera mechanism 4 is the same as the driving connection between the fourth driving module 34 and the third driving module 33, and will not be described in detail here. The sixth driving module 36 is used to drive the camera mechanism 4 to rotate. The sixth driving module 36 includes a mounting assembly 31 and a second driver 361 for driving the camera mechanism 4 to rotate. The second driver 361 is connected to the mounting assembly 31 by driving. The camera mechanism 4 is provided in two, and the two camera mechanisms 4 are provided on the mounting assembly 31. The two camera mechanisms 4 are symmetrically arranged along the third direction. The first camera 42 and the light source 41 are respectively inclined with respect to the mounting assembly 31.

[0034] like Figure 5 and Figure 6As shown, the light source part 41 includes a first lampshade part 411 and a second lampshade part 412, the first lampshade part 411 has a first side wall 4111 connected to the displacement mechanism 3, the first lampshade part 411 is connected to the displacement mechanism 3, the second lampshade part 412 has a second side wall 4121 facing the circuit board, the second lampshade part 412 is protruded from the first lampshade part 411 along the direction of the first side wall 4111 toward the second side wall 4121, the first lampshade part 411 and the second lampshade part 412 are both provided with lamp beads 413, the first lampshade part 411 and the second lampshade part 412 have an arc-shaped light-emitting surface 414 on the side facing the circuit board, and the lamp beads 413 are arranged on the light-emitting surface 414.

[0035] In this embodiment, the first lampshade portion 411 and the second lampshade portion 412 may be annular in shape, so that the light irradiated by the lamp beads 413 on the first lampshade portion 411 and the second lampshade portion 412 can be more conveniently focused on the electronic components. The second lampshade portion 412 is provided to protrude from the first lampshade portion 411 along the direction of the first side wall 4111 toward the second side wall 4121, so that the distances between the second lampshade portion 412 and the first lampshade portion 411 and the circuit board are different, thereby making it easier for the lamp beads 413 on the first lampshade portion 411 and the second lampshade portion 412 to provide lighting for the circuit board.

[0036] like Figure 5 As shown, the second lampshade portion 412 has notches 4122 on both sides along the first direction, and the two notches 4122 are respectively located on both sides of the first lampshade portion 411 .

[0037] In this embodiment, the second lampshade portion 412 is provided with notches 4122 on both sides along the first direction so that the second lampshade portion 412 has a half-bowl shape, thereby making it easier to converge the light irradiated by the lamp beads 413 on the second lampshade portion 412 onto the electronic components, thereby further reducing the volume of the second lampshade portion 412 while ensuring that the light source 41 can provide sufficient lighting, thereby reducing the production cost of the second lampshade portion 412.

[0038] like Figure 5 and Figure 6 As shown, the second lampshade portion 412 includes a third lampshade portion 4123 and a fourth lampshade portion 4124, the fourth lampshade portion 4124 is protruded from the third lampshade portion 4123 along the direction of the first side wall 4111 toward the second side wall 4121, the third lampshade portion 4123 is protruded from the first lampshade portion 411 along the direction of the first side wall 4111 toward the second side wall 4121, the outer diameter of the third lampshade portion 4123 is larger than that of the first lampshade portion 411, and the outer diameter of the fourth lampshade portion 4124 is larger than that of the third lampshade portion 4123.

[0039] In this embodiment, the first lampshade portion 411, the third lampshade portion 4123 and the fourth lampshade portion 4124 are sequentially protruded along the direction of the first side wall 4111 toward the second side wall 4121, so that the working distances of the first lampshade portion 411, the third lampshade portion 4123 and the fourth lampshade portion 4124 to the circuit board are getting closer and closer. The outer diameters of the first lampshade portion 411, the third lampshade portion 4123 and the fourth lampshade portion 4124 are gradually increased, so that the range of the circuit board illuminated by the first lampshade portion 411, the third lampshade portion 4123 and the fourth lampshade portion 4124 is getting larger and larger, thereby making it easier for the lamp beads 413 on the first lampshade portion 411, the third lampshade portion 4123 and the fourth lampshade portion 4124 to cooperate with each other, thereby ensuring that the light source 41 provides clearer illumination for the circuit board.

[0040] like Figure 5 As shown, the lamp beads 413 include a first lamp bead 4131 for irradiating ultraviolet light and a second lamp bead 4132 for irradiating white light, the light-emitting surface 414 of the first lampshade portion 411 and the light-emitting surface 414 of the third lampshade portion 4123 are both provided with the first lamp bead 4131, and a plurality of first lamp beads 4131 are arranged at intervals and in a ring shape around the light-emitting surface 414 of the first lampshade portion 411 and the third lampshade portion 4123, and the light-emitting surface 414 of the fourth lampshade portion 4124 is provided with the second lamp bead 4132, and a plurality of second lamp beads 4132 are arranged at intervals and in a ring shape around the light-emitting surface 414 of the fourth lampshade portion 4124.

[0041] In this embodiment, the first lampshade portion 411, the third lampshade portion 4123, and the fourth lampshade portion 4124 may all have light-emitting surfaces 414 with different outer diameters on one side close to the circuit board, and the outer diameter of the light-emitting surface 414 may be set according to the outer diameters of the first lampshade portion 411, the third lampshade portion 4123, and the fourth lampshade portion 4124, so as to more conveniently control the irradiation range of the first lamp bead 4131 or the second lamp bead 4132. A plurality of first lamp beads 4131 are arranged at intervals and in a ring shape around the light-emitting surfaces 414 of the first lampshade portion 411 and the third lampshade portion 4123, and a plurality of second lamp beads 4132 are arranged at intervals and in a ring shape around the light-emitting surface 414 of the fourth lampshade portion 4124, so as to more conveniently gather light onto the circuit board, electronic components, and colloid, so as to enable the light source component 41 to more clearly illuminate the circuit board, electronic components, and colloid. The present application adopts a mixed light source of white light and ultraviolet light. When the circuit board is illuminated by the mixed light source, the first camera 42 forms an image by photographing the circuit board. In the image, the color contrast and brightness difference of the black colloid and the surrounding features are obvious, which makes the subsequent steps of identifying colloid defects more convenient.

[0042] In this embodiment, the circuit board optical inspection device further includes a controller, the controller is electrically connected to the camera mechanism, the camera mechanism 4 is used to detect the percentage of black glue coating of electronic components on the circuit board, and the first camera 42 is used to photograph the circuit board under the illumination of the light source 41 to form an image and feed back a first signal to the controller. The image is used to display the electronic components as black and the black glue as blue. The controller calculates the percentage of colloid coating according to the color position arrangement of the electronic components, colloid and the circuit board in the image, so as to facilitate the detection of colloid defects.

[0043] In this embodiment, the power of the light source 41 is any one of 800W, 900W, 1000W, 1100W and 1200W, so that the first lamp bead 4131 on the first lampshade part 411 and the third lampshade part 4123 is a high-power ultraviolet lamp bead 413, and the second lamp bead 4132 on the fourth lampshade part 4124 is a high-power white light lamp bead 413, so that the circuit board can more clearly display the positional relationship between the electronic components and the colloid under the illumination of the light source 41. And / or, the first lamp bead 4131 and the second lamp bead 4132 are both configured as plug-in LEDs or SMD LEDs, so that the installation of the first lamp bead 4131 and the second lamp bead 4132 is more convenient. The distance between the first lamp bead 4131 and the second lamp bead 4132 along the third direction is set to 5mm to 15mm, and the working distance between the first lamp bead 4131 and the second lamp bead 4132 and the circuit board is set to 60mm to 70mm, so that it is more convenient to adjust the illumination range of the first lamp bead 4131 or the second lamp bead 4132, so that the light source 41 can illuminate the circuit board more clearly.

[0044] In this embodiment, two camera mechanisms 4 are provided, and both camera mechanisms 4 are provided on the mounting assembly 31. The two camera mechanisms 4 are symmetrically arranged along the third direction, and the first camera 42 and the light source component 41 are respectively arranged to be inclined along the third direction with respect to the mounting assembly 31. The central axis of the first camera 42 and the central axis of the light source component 41 are respectively inclined at an angle of 17 to 27 degrees to the horizontal plane, so that it is more convenient for the light source component 41 to illuminate the circuit board and for the first camera 42 to shoot the circuit board.

[0045] like Figure 3 and Figure 4 As shown, the displacement mechanism 3 includes a mounting assembly 31, and the mounting assembly 31 includes a mounting base plate 311, a first driving module 312 and two mounting seats 313. The first driving module 312 is arranged on the mounting base plate 311, and the first driving module 312 drives and connects the two mounting seats 313. The camera mechanism 4 is movably arranged on one of the mounting seats 313, and the first driving module 312 is used to adjust the distance between the two mounting seats 313.

[0046] In this embodiment, at least two camera mechanisms 4 can be set as two. In order to facilitate the two first cameras 42 to cooperate with each other to shoot the circuit board, the first driving module 312 includes a third driver 3121 and connecting members 3122 arranged at both ends of the third driver 3121. The third driver 3121 drives and connects the two connecting members 3122 respectively, and the mounting seat 313 is movably arranged on the connecting member 3122, thereby further adjusting the distance between the two first cameras 42.

[0047] like Figure 2 As shown, in this embodiment, the mounting assembly 31 further includes a light shield 314, and the light shield 314 is provided on the periphery of the light source 41 and the first camera 42. The light shield 314 has an opening on the side close to the circuit board for the light source 41 to illuminate the circuit board and for the first camera 42 to photograph the circuit board, so that it is more convenient for the camera mechanism 4 to operate in the light shield 314, thereby avoiding the influence of external light on the camera mechanism 4. And / or, the camera mechanism 4 further includes a second camera 43, the second camera 43 and the first camera 42 are arranged at intervals along the first direction, the second camera 43 is located outside the light shield 314, and the second camera 43 is used to locate the circuit board. The camera mechanism 4 is driven to rotate by the sixth driving module 36, so that the second camera 43 photographs the Mark points and / or the QR code on the circuit board for positioning, thereby improving the accuracy of the first camera 42 photographing the circuit board.

[0048] like Figure 1 and Figure 2 As shown, the circuit board optical inspection equipment also includes a second driving module 5, the measuring platform 2 includes a plurality of clamping parts 22 spaced apart along the first direction, the placement area 21 is surrounded by two adjacent clamping parts 22, and the second driving module 5 drives and connects the plurality of clamping parts 22 to adjust the area range of the placement area 21.

[0049] In this embodiment, the second driving module 5 drives the two clamping parts 22 to move closer to or away from each other along the first direction, thereby adjusting the size of the placement area 21 enclosed between the two adjacent clamping parts 22, so that the placement area 21 is more suitable for placing circuit boards of different sizes, thereby improving the efficiency of circuit board detection.

[0050] In this embodiment, the second driving module 5 may include a screw (not shown) and a motor (not shown), etc. The motor is drivingly connected to the screw, and the screw is drivingly connected to multiple clamping parts 22, thereby facilitating synchronous movement between two adjacent clamping parts 22.

[0051] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A circuit board optical inspection device, characterized in that: include: Machine; A measuring table, arranged on the machine platform, the measuring table having a placement area for placing the circuit board, and the area range of the placement area is adjustable; A displacement mechanism is arranged on the machine platform; as well as At least two camera mechanisms, at least two of which are spaced apart on the displacement mechanism, the camera mechanisms being located above the placement area for detecting the circuit board, the camera mechanisms comprising a light source and a first camera, the light source being used to irradiate ultraviolet light to the circuit board, and part of the first camera being arranged through the light source so that the shooting range of the first camera at least partially overlaps with the irradiation range of the light source; The displacement mechanism is used to drive the camera mechanism to move along the first direction, the second direction and the third direction respectively, and the displacement mechanism is also used to drive the camera mechanism to rotate; The first direction, the second direction and the third direction intersect each other.

2. The circuit board optical inspection device according to claim 1, characterized in that: The light source component includes a first lampshade portion and a second lampshade portion, the first lampshade portion having a first side wall connected to the displacement mechanism, the first lampshade portion being connected to the displacement mechanism, the second lampshade portion having a second side wall facing the circuit board, the second lampshade portion being protruded from the first lampshade portion along a direction from the first side wall toward the second side wall, the first lampshade portion and the second lampshade portion are both provided with lamp beads, the first lampshade portion and the second lampshade portion both have an arc-shaped light-emitting surface on one side facing the circuit board, and the lamp beads are provided on the light-emitting surface.

3. The circuit board optical inspection device according to claim 2, characterized in that: The second lampshade portion has notches on two sides along the first direction, and the two notches are respectively located on two sides of the first lampshade portion.

4. The circuit board optical inspection device according to claim 2, characterized in that: The second lampshade portion includes a third lampshade portion and a fourth lampshade portion, the fourth lampshade portion protrudes from the third lampshade portion along the direction of the first side wall toward the second side wall, the third lampshade portion protrudes from the first lampshade portion along the direction of the first side wall toward the second side wall, the outer diameter of the third lampshade portion is larger than that of the first lampshade portion, and the outer diameter of the fourth lampshade portion is larger than that of the third lampshade portion.

5. The circuit board optical inspection device according to claim 3, characterized in that: The lamp beads include first lamp beads for irradiating ultraviolet light and second lamp beads for irradiating white light. The light-emitting surface of the first lamp cover part and the light-emitting surface of the third lamp cover part are both provided with the first lamp beads, and a plurality of first lamp beads are arranged at intervals and in a ring shape around the light-emitting surfaces of the first lamp cover part and the third lamp cover part. The light-emitting surface of the fourth lamp cover part is provided with the second lamp beads, and a plurality of second lamp beads are arranged at intervals and in a ring shape around the light-emitting surface of the fourth lamp cover part.

6. The circuit board optical inspection device according to claim 5, characterized in that: The circuit board optical inspection equipment also includes a controller, which is electrically connected to the camera mechanism, and the camera mechanism is used to detect the proportion of black glue coating on electronic components on the circuit board. The first camera is used to photograph the circuit board under the illumination of the light source to form an image, and the image is used to show that the electronic components are black and the black glue is blue.

7. The circuit board optical inspection device according to claim 5, characterized in that: The power of the light source is 800W to 1200W; And / or, the first lamp bead and the second lamp bead are both configured as plug-in LEDs or surface-mount LEDs; the distance between the first lamp bead and the second lamp bead along the third direction is configured to be 5 mm to 15 mm.

8. The circuit board optical inspection device according to claim 2, characterized in that: The displacement mechanism includes a mounting assembly, which includes a mounting base, a first drive module and two mounting seats. The first drive module is arranged on the mounting base, and the first drive module drives and connects the two mounting seats. One of the camera mechanisms is movably arranged on one of the mounting seats, and the first drive module is used to adjust the distance between the two mounting seats.

9. The circuit board optical inspection device according to claim 8, characterized in that: The mounting assembly further includes a light shield, which is disposed on the periphery of the light source and the first camera, and a side of the light shield close to the circuit board has an opening for the light source to illuminate the circuit board and for the first camera to photograph the circuit board; And / or, the camera mechanism further includes a second camera, the second camera is spaced apart from the first camera along the first direction, the second camera is located outside the light shield, and the second camera is used to locate the circuit board.

10. The circuit board optical inspection device according to any one of claims 1 to 9, characterized in that: The circuit board optical inspection equipment also includes a second driving module, the measuring platform includes a plurality of clamping parts spaced apart along the first direction, the placement area is surrounded by two adjacent clamping parts, and the second driving module drives and connects the plurality of clamping parts to adjust the area range of the placement area.

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