Circuit board optical inspection apparatus

Abstract

The application discloses a kind of circuit board optical detection equipment, it is related to circuit board detection equipment technical field, wherein, circuit board optical detection equipment includes machine table;Measuring table is located on the machine table, the measuring table has placement area, the area range of the placement area is adjustable;Displacement mechanism is located on the machine table;And at least two camera mechanisms, at least two the camera mechanisms are spaced apart on the displacement mechanism, the camera mechanism includes light source piece and first camera, the light source piece is used to irradiate ultraviolet light to circuit board;The technical effect of the technical scheme provided by the application is that the colloid is displayed as blue under the irradiation of ultraviolet light, other electronic components on the circuit board are displayed as black, to improve the contrast of electronic components and colloid on the image of circuit board photographed by first camera, to enable the application to clearly detect the defects of colloid, to improve the production efficiency of circuit board.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of circuit board detection equipment, and particularly relates to a circuit board optical detection equipment. BACKGROUND

[0002] In the production process of a circuit board, electronic components are adhered to the circuit board by a glue. In the detection process of the circuit board, workers detect whether the glue is too much or too little, whether the glue exists, glue overflow and coating proportion and the like by using a magnifying glass. Since the color of the electronic components on the circuit board, the bottom color of the circuit board itself and the color of the glue are all black, and the size characteristics are very small. Therefore, the existing detection by manual work is low in efficiency and high in working strength, and is prone to missed detection and misjudgment, thereby affecting the production efficiency of the circuit board. SUMMARY

[0003] The main purpose of the present application is to provide a circuit board optical detection equipment, which aims to improve the production efficiency of the circuit board.

[0004] To achieve the above-mentioned purpose, the circuit board optical detection equipment provided by the present application comprises a machine table;

[0005] a measurement table arranged on the machine table, the measurement table having a placement area for placing the circuit board, the area range of the placement area being adjustable; a displacement mechanism arranged on the machine table; and at least two camera mechanisms arranged on the displacement mechanism at intervals, the camera mechanisms being located above the placement area for detecting the circuit board, the camera mechanisms comprising a light source member and a first camera, the light source member being used for irradiating ultraviolet light to the circuit board, part of the first camera being arranged in the light source member so that the shooting range of the first camera and the irradiation range of the light source member at least partially coincide; the displacement mechanism being used for driving the camera mechanisms to move along a first direction, a second direction and a third direction respectively, the displacement mechanism also being used for driving the camera mechanisms to rotate; wherein the first direction, the second direction and the third direction intersect with each other.

[0006] In an embodiment, the light source member comprises a first lampshade part and a second lampshade part, the first lampshade part having a first side wall connected with the displacement mechanism, the first lampshade part being connected with the displacement mechanism, the second lampshade part having a second side wall facing the circuit board, the second lampshade part being convexly arranged on the first lampshade part along the direction from the first side wall to the second side wall, the first lampshade part and the second lampshade part both being provided with lamp beads, one side of the first lampshade part and the second lampshade part facing the circuit board both having an arc-shaped light emitting surface, the lamp beads being arranged on the light emitting surface.

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

[0008] In an embodiment, the second lampshade part comprises a third lampshade part and a fourth lampshade part, the fourth lampshade part is convexly arranged on the third lampshade part along the direction of the first side wall towards the second side wall, the third lampshade part is convexly arranged on the first lampshade part along the direction of the first side wall towards the second side wall, the outer diameter of the third lampshade part is greater than that of the first lampshade part, and the outer diameter of the fourth lampshade part is greater than that of the third lampshade part.

[0009] In an embodiment, the lamp bead comprises a first lamp bead for irradiating ultraviolet light and a second lamp bead for irradiating white light, the light-emitting surface of the first lampshade part and the light-emitting surface of the third lampshade part are both provided with the first lamp bead, a plurality of first lamp beads are arranged at intervals around the light-emitting surface of the first lampshade part and the third lampshade part and arranged in a ring shape, the light-emitting surface of the fourth lampshade part is provided with the second lamp bead, and a plurality of second lamp beads are arranged at intervals around the light-emitting surface of the fourth lampshade part and arranged in a ring shape.

[0010] In an embodiment, the circuit board optical detection device further comprises a controller, the controller is electrically connected to the camera mechanism, the camera mechanism is used to detect the black glue coating proportion of the electronic component on the circuit board, the first camera is used to shoot the circuit board to form an image under the irradiation of the light source, and the image is used to display that the electronic component is black and the black glue is blue.

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

[0012] In an embodiment, the displacement mechanism comprises a mounting assembly, the mounting assembly comprises a mounting bottom plate, a first driving module and two mounting seats, the first driving module is arranged on the mounting bottom plate, the first driving module is drivingly connected to the two mounting seats, one camera mechanism is movably arranged on one mounting seat, and the first driving module is used to adjust the distance between the two mounting seats.

[0013] In an embodiment, the mounting assembly further comprises a light shield, the light shield covers 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 irradiate the circuit board and for the first camera to capture the circuit board; and / or, the camera mechanism further comprises a second camera, the second camera is arranged along the first direction and spaced apart from the first camera, the second camera is located outside the light shield, and the second camera is used for positioning the circuit board.

[0014] In an embodiment, the circuit board optical detection device further comprises a second driving module, the measuring table comprises a plurality of clamping portions arranged along the first direction, and the placing area is surrounded by adjacent two clamping portions, and the second driving module is drivingly connected with the plurality of clamping portions to adjust the area range of the placing area.

[0015] The technical scheme of the present application can detect the colloid of the electronic element on the circuit board by using the first camera and the light source under the driving of the displacement mechanism. The colloid displays blue under the irradiation of ultraviolet light, and other electronic elements on the circuit board display black. Thus, the contrast of the electronic element and the colloid on the image of the circuit board captured by the first camera is improved, and the defects of the colloid can be clearly detected, thereby improving the production efficiency of the circuit board. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0017] Figure 1 The structural schematic diagram of an embodiment of the circuit board optical detection device provided by the present application;

[0018] Figure 2 The structural schematic diagram of an embodiment of the circuit board optical detection device provided by the present application;

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

[0020] Figure 4 The structural schematic diagram of the fifth driving module, the sixth driving module and the camera mechanism in an embodiment of the circuit board optical detection device provided by the present application;

[0021] Figure 5The structural schematic diagram of the light source part in an embodiment of the circuit board optical detection equipment provided by the application is shown in the figure.

[0022] Figure 6 The structural schematic diagram of the light source part in another angle in an embodiment of the circuit board optical detection equipment provided by the application is shown in the figure.

[0023] Explanation of reference numerals:

[0024] 1, machine table; 2, measuring table; 21, placement area; 22, clamping part; 3, displacement mechanism; 31, mounting assembly; 311, mounting bottom plate; 312, first driving module; 3121, third driver; 3122, connecting piece; 313, mounting seat; 314, light shield; 32, frame body; 33, third driving module; 331, second connecting seat; 332, first driver; 34, fourth driving module; 341, first connecting seat; 35, fifth driving module; 36, sixth driving module; 361, second driver; 4, camera mechanism; 41, light source part; 411, first lamp cover part; 4111, first side wall; 412, second lamp cover part; 4121, second side wall; 4122, notch; 4123, third lamp cover part; 4124, fourth lamp cover part; 413, lamp bead; 4131, first lamp bead; 4132, second lamp bead; 414, light emitting surface; 42, first camera; 43, second camera; 5, second driving module.

[0025] The implementation, functional features and advantages of the application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the application.

[0027] It should be noted that if the embodiments of the application 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 condition, etc. between components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.

[0028] In addition, if the description of "first", "second" and the like is involved in the embodiments of the present application, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one of the features. In addition, if "and / or" or "and / or" appears throughout the text, it means that the three parallel schemes are included, for example, "A and / or B" includes A scheme, or B scheme, or A and B scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of the ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the present application.

[0029] The present application provides a circuit board optical detection equipment.

[0030] Please refer to Figure 1 In an embodiment of the present application, the circuit board optical detection equipment comprises a machine table 1, a measuring table 2, a displacement mechanism 3 and a camera mechanism 4; the measuring table 2 is arranged on the machine table 1, the measuring table 2 has a placement area 21 for placing a circuit board, the area range of the placement area 21 is adjustable; the displacement mechanism 3 is arranged on the machine table 1; at least two camera mechanisms 4 are arranged on the displacement mechanism 3, the camera mechanisms 4 are located above the placement area 21 for detecting the circuit board, the camera mechanisms 4 comprise a light source member 41 and a first camera 42, the light source member 41 is used for irradiating ultraviolet light to the circuit board, part of the first camera 42 is arranged in the light source member 41, so that the shooting range of the first camera 42 and the irradiation range of the light source member 41 at least partially coincide; the displacement mechanism 3 is used for driving the camera mechanisms 4 to move along the first direction, the second direction and the third direction respectively, the displacement mechanism 3 is also used for driving the camera mechanisms 4 to rotate; wherein the first direction, the second direction and the third direction intersect with each other.

[0031] The technical scheme of the present application can detect the colloid of the electronic element on the circuit board by adopting the first camera 42 and the light source member 41 under the driving of the displacement mechanism 3, the colloid displays blue under the irradiation of ultraviolet light, and other electronic elements on the circuit board display black, thereby improving the contrast of the electronic element and the colloid on the image of the circuit board shot by the first camera 42, and thereby the present application can clearly detect the defects of the colloid, thereby improving the production efficiency of the circuit board.

[0032] In the embodiment, the measuring table 2 has a placement area 21 for placing the circuit board, the area range of the placement area 21 is adjusted and set by design, 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 part of the first camera 42 to pass through the light source member 41, the shooting range of the first camera 42 at least partially coincides with the illumination range of the light source member 41, thereby making the ultraviolet light emitted by the light source member 41 better illuminate the first camera 42, thereby improving the clarity of the image of the circuit board shot by the first camera 42. The present application provides ultraviolet light emitted by the light source member 41 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 shot by the first camera 42, thereby facilitating the first camera 42 to clearly shoot the arrangement of the colloid and electronic components on the circuit board, thereby solving the problem that the conventional 2D AVI device or 3D AVI device cannot detect the colloid defects on the electronic components. The present application takes advantage of the short wavelength characteristics of ultraviolet light, which can be fully diffusely reflected on black colloid, black electronic components and black circuit board, thereby facilitating the distinction between black colloid, black electronic components and black circuit board. The material of the black colloid is different from that of the black electronic components and the black circuit board, and the colloid can display blue under the irradiation of ultraviolet light, and the bottom plate of the electronic components and the circuit board can display black under the irradiation of ultraviolet light, thereby making the contrast of the colloid, electronic components and circuit board in the image shot by the first camera 42 large, thereby facilitating the present application to clearly detect the defects of the colloid such as multiple colloid, less colloid, overflow colloid and broken colloid, and also accurately measure the length proportion of the missing colloid.

[0033] In the embodiment, the displacement mechanism 3 can 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 in the figure) for mounting the camera mechanism 4, the fifth driving module 35, and the sixth driving module 36. The frame 32 is arranged on the machine table 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 a first direction, the moving seat is movably arranged on the fourth driving module 34 along a 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 drivingly connected with the camera mechanism 4. The frame 32 is arranged on the machine table 1 at both ends of the bottom of the frame 32, thereby improving 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 is arranged on the first connecting seat 341. The third driving module 33 includes a second connecting seat 331 arranged on the frame 32 and a first driver 332, and the first driver 332 is drivingly connected with the first connecting seat 341 to drive the first connecting seat 341 and the camera mechanism 4 to move along the first direction. The side of the first connecting seat 341 close to the third driving module 33 can be provided with a first sliding block (not shown in the figure), the second connecting seat 331 can be provided with a first sliding rail (not shown in the figure) matched with the first sliding block, and the first sliding block is movably arranged on the first sliding rail, so that the first connecting seat 341 is 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, and 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, which will not be repeated here. The fifth driving module 35 is drivingly connected with the camera mechanism 4, and the fifth driving module 35 is used to drive the camera mechanism 4 to move along a 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, which will not be repeated here. The sixth driving module 36 is used to drive the camera mechanism 4 to rotate, and the sixth driving module 36 includes a mounting assembly 31 and a second driver 361 used to drive the camera mechanism 4 to rotate. The second driver 361 is drivingly connected with the mounting assembly 31, and the camera mechanism 4 is provided in two, the two camera mechanisms 4 are arranged on the mounting assembly 31, and the two camera mechanisms 4 are symmetrically arranged along the third direction. The first camera 42 and the light source 41 are respectively arranged obliquely with the mounting assembly 31.

[0034] As Figure 5 and Figure 6As shown, the light source member 41 comprises a first lampshade part 411 and a second lampshade part 412, the first lampshade part 411 has a first side wall 4111 connected with the displacement mechanism 3, the first lampshade part 411 is connected with 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 towards 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 both have arc-shaped light emitting surfaces 414 on the side facing the circuit board, and the lamp beads 413 are arranged on the light emitting surfaces 414.

[0035] In the embodiment, the first lampshade part 411 and the second lampshade part 412 can have a ring shape, so as to more conveniently converge the light radiated by the lamp beads 413 on the first lampshade part 411 and the second lampshade part 412 to the electronic components. By arranging the second lampshade part 412 to be protruded from the first lampshade part 411 along the direction of the first side wall 4111 towards the second side wall 4121, the second lampshade part 412 and the first lampshade part 411 are arranged to have different distances from the circuit board, so as to more conveniently provide illumination for the circuit board by the lamp beads 413 on the first lampshade part 411 and the second lampshade part 412.

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

[0037] In the embodiment, by arranging the second lampshade part 412 to have notches 4122 on both sides along the first direction, the second lampshade part 412 has a half-bowl shape, so as to more conveniently converge the light radiated by the lamp beads 413 on the second lampshade part 412 to the electronic components, thereby further reducing the volume of the second lampshade part 412 under the premise of ensuring that the light source member 41 can provide sufficient illumination, and further reducing the production cost of the second lampshade part 412.

[0038] As shown in the figures, Figure 5 and Figure 6 the second lampshade part 412 comprises a third lampshade part 4123 and a fourth lampshade part 4124, the fourth lampshade part 4124 is protruded from the third lampshade part 4123 along the direction of the first side wall 4111 towards the second side wall 4121, the third lampshade part 4123 is protruded from the first lampshade part 411 along the direction of the first side wall 4111 towards the second side wall 4121, the outer diameter of the third lampshade part 4123 is greater than that of the first lampshade part 411, and the outer diameter of the fourth lampshade part 4124 is greater than that of the third lampshade part 4123.

[0039] In this embodiment, the first lampshade portion 411, the third lampshade portion 4123, and the fourth lampshade portion 4124 protrude sequentially from the first sidewall 4111 toward the second sidewall 4121, so that the working distance between the first lampshade portion 411, the third lampshade portion 4123, and the fourth lampshade portion 4124 and the circuit board gradually increases. The outer diameters of the first lampshade portion 411, the third lampshade portion 4123, and the fourth lampshade portion 4124 gradually increase, so that the area illuminated by the first lampshade portion 411, the third lampshade portion 4123, and the fourth lampshade portion 4124 on the circuit board becomes larger and larger, which makes 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 to the circuit board.

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

[0041] In this embodiment, the first lampshade portion 411, the third lampshade portion 4123, and the fourth lampshade portion 4124 may each have a light-emitting surface 414 with a different outer diameter on the side near the circuit board. The size of the outer diameter of the light-emitting surface 414 can be set according to the outer diameter of the first lampshade portion 411, the third lampshade portion 4123, and the fourth lampshade portion 4124, thereby making it easier to control the illumination range of the first lamp bead 4131 or the second lamp bead 4132. A plurality of first lamp beads 4131 are arranged in a ring around the light-emitting surface 414 of the first lampshade portion 411 and the third lampshade portion 4123, and a plurality of second lamp beads 4132 are arranged in a ring around the light-emitting surface 414 of the fourth lampshade portion 4124, thereby making it easier for the first lamp beads 4131 and the second lamp beads 4132 to focus the light onto the circuit board, electronic components, and colloid, thereby making the light source 41 illuminate the circuit board, electronic components, and colloid more clearly. This application employs 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 captures an image of the circuit board. In the image, the color contrast and brightness difference between the black colloid and the surrounding features are obvious, which makes it easier to identify colloid defects in subsequent steps.

[0042] In the embodiment, the circuit board optical detection device further comprises a controller electrically connected to the camera mechanism, the camera mechanism 4 is used to detect the black glue coating proportion of the electronic components on the circuit board, the first camera 42 is used to shoot the circuit board under the irradiation of the light source part 41 to form an image and feed back a first signal to the controller. The image is used to display that the electronic components are black and the black glue is blue, and the controller calculates the coating proportion of the glue according to the color position arrangement of the electronic components, glue and circuit board displayed in the image, so as to more conveniently detect the defects of the glue.

[0043] In the embodiment, the power of the light source part 41 is any one of 800W, 900W, 1000W, 1100W and 1200W, so that the first lamp beads 4131 on the first lampshade part 411 and the third lampshade part 4123 are high-power ultraviolet lamp beads 413, so that the second lamp beads 4132 on the fourth lampshade part 4124 are high-power white light lamp beads 413, and the position relationship between the electronic components and the glue on the circuit board is more clearly displayed under the irradiation of the light source part 41. And / or, the first lamp beads 4131 and the second lamp beads 4132 are both plug-in type LEDs or patch type LEDs, so that the installation of the first lamp beads 4131 and the second lamp beads 4132 is more convenient. The distance of the first lamp beads 4131 and the second lamp beads 4132 along the third direction is set to 5mm to 15mm, and the working distance of the first lamp beads 4131 and the second lamp beads 4132 to the circuit board is set to 60mm to 70mm, so that the irradiation range of the first lamp beads 4131 or the second lamp beads 4132 is more conveniently adjusted, and the light source part 41 more clearly irradiates the circuit board.

[0044] In the embodiment, the camera mechanism 4 is provided as two, and the two camera mechanisms 4 are both arranged on the mounting assembly 31 and symmetrically arranged along the third direction. The first camera 42 and the light source part 41 are respectively arranged obliquely along the third direction with the mounting assembly 31. The inclination angle of the central axis of the first camera 42 and the central axis of the light source part 41 with the horizontal plane is 17 degrees to 27 degrees, so that the light source part 41 is more conveniently irradiated to the circuit board and the first camera 42 is more conveniently used to shoot the circuit board.

[0045] As shown in Figure 3 and Figure 4 The displacement mechanism 3 comprises a mounting assembly 31, the mounting assembly 31 comprises a mounting bottom plate 311, a first driving module 312 and two mounting seats 313, the first driving module 312 is arranged on the mounting bottom plate 311, the first driving module 312 is drivingly connected to the two mounting seats 313, one camera mechanism 4 is movably arranged on one mounting seat 313, and the first driving module 312 is used to adjust the distance between the two mounting seats 313.

[0046] In the embodiment, the at least two camera mechanisms 4 can be provided 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 pieces 3122 arranged at two ends of the third driver 3121, the third driver 3121 drives the two connecting pieces 3122 respectively, and the mounting seat 313 is movably arranged on the connecting pieces 3122, thereby further adjusting the distance between the two first cameras 42.

[0047] As shown in Figure 2 In the embodiment, the mounting assembly 31 further includes a light shield 314, the light shield 314 is arranged on the outer periphery of the light source 41 and the first camera 42. The side of the light shield 314 close to the circuit board has an opening for the light source 41 to irradiate the circuit board and for the first camera 42 to shoot the circuit board, thereby facilitating 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 is arranged along the first direction and is spaced apart from the first camera 42, the second camera 43 is located outside the light shield 314, and the second camera 43 is used for positioning the circuit board. The camera mechanism 4 is driven by the sixth driving module 36 to rotate, so that the second camera 43 shoots the Mark point and / or the two-dimensional code on the circuit board for positioning, thereby improving the accuracy of the first camera 42 shooting the circuit board.

[0048] As shown in Figure 1 and Figure 2 The circuit board optical detection equipment further includes a second driving module 5, the measuring table 2 includes a plurality of clamping portions 22 arranged along the first direction and spaced apart from each other, and the placing area 21 is arranged between adjacent two clamping portions 22, and the second driving module 5 is drivingly connected with the plurality of clamping portions 22 to adjust the area range of the placing area 21.

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

[0050] In the embodiment, the second driving module 5 can include a lead screw (not shown in the figure) and a motor (not shown in the figure), the motor is drivingly connected with the lead screw, the lead screw is drivingly connected with the plurality of clamping portions 22, thereby facilitating the synchronous movement between the adjacent two clamping portions 22.

[0051] The above merely illustrates the embodiments of the present application, and is not intended to limit the patent scope of the present application. Any equivalent structural transformation, direct / indirect application in other related technical fields, or the like, within the technical concept of the present application, and based on the content of the present application and the accompanying drawings, are included in the patent protection scope of the present application.

Claims

1. A circuit board optical inspection apparatus, characterized by comprising: The application relates to a circuit board optical detection equipment, which comprises the following parts: a machine table; a measuring table arranged on the machine table, wherein the measuring table has a placing area for placing a circuit board, and the area range of the placing area is adjustable; a displacement mechanism arranged on the machine table; and at least two camera mechanisms arranged on the displacement mechanism and located above the placing area, wherein the camera mechanisms are used for detecting the circuit board, the camera mechanisms comprise a light source part and a first camera, the light source part is used for irradiating ultraviolet light on the circuit board, part of the first camera is arranged through the light source part, and the shooting range of the first camera and the irradiation range of the light source part at least partially overlap. The displacement mechanism is used for driving the camera mechanisms to move along a first direction, a second direction and a third direction respectively, and the displacement mechanism is also used for driving the camera mechanisms to rotate. The first direction, the second direction and the third direction intersect with each other; the light source part comprises a first lampshade part and a second lampshade part, the first lampshade part has a first side wall connected with the displacement mechanism, the first lampshade part is connected with the displacement mechanism, the second lampshade part has a second side wall facing the circuit board, the second lampshade part is protruded from the first lampshade part along the direction from the first side wall to the second side wall, the first lampshade part and the second lampshade part are both provided with lamp beads, and the first lampshade part and the second lampshade part both have arc-shaped light-emitting surfaces on the sides facing the circuit board. The second lampshade part has notches on the two sides along the first direction, and the two notches are located on the two sides of the first lampshade part respectively.

2. The circuit board optical inspection apparatus of claim 1, wherein, The second lampshade part comprises a third lampshade part and a fourth lampshade part, the fourth lampshade part is protruded from the third lampshade part along the direction from the first side wall to the second side wall, the third lampshade part is protruded from the first lampshade part along the direction from the first side wall to the second side wall, the outer diameter of the third lampshade part is larger than that of the first lampshade part, and the outer diameter of the fourth lampshade part is larger than that of the third lampshade part.

3. The circuit board optical inspection apparatus of claim 1, wherein, The lamp beads comprise first lamp beads for irradiating ultraviolet light and second lamp beads for irradiating white light, the light-emitting surfaces of the first lampshade part and the third lampshade part are both provided with the first lamp beads, a plurality of first lamp beads are arranged on the light-emitting surfaces of the first lampshade part and the third lampshade part in a ring shape and at intervals, the light-emitting surface of the fourth lampshade part is provided with the second lamp beads, and a plurality of second lamp beads are arranged on the light-emitting surface of the fourth lampshade part in a ring shape and at intervals.

4. The circuit board optical inspection apparatus of claim 3, wherein The circuit board optical detection equipment further comprises a controller electrically connected with the camera mechanisms, the camera mechanisms are used for detecting the black glue coating proportion of electronic elements on the circuit board, the first camera is used for shooting the circuit board to form an image under the irradiation of the light source part, and the image is used for displaying that the electronic elements are black and the black glue is blue.

5. The circuit board optical inspection apparatus of claim 4, wherein, The power of the light source part is 800 W to 1200 W.

6. The circuit board optical inspection apparatus of claim 4, wherein, ​ And / or, the first lamp bead and the second lamp bead are arranged as plug-in LED or patch LED; the distance of the first lamp bead and the second lamp bead along the third direction is arranged as 5mm to 15mm.

7. The circuit board optical inspection apparatus of claim 1, wherein, The displacement mechanism comprises a mounting assembly, the mounting assembly comprises a mounting bottom plate, a first driving module and two mounting seats, the first driving module is arranged on the mounting bottom plate, the first driving module is drivingly connected with the two mounting seats, one camera mechanism is movably arranged on one mounting seat, and the first driving module is used for adjusting the distance between the two mounting seats.

8. The circuit board optical inspection apparatus of claim 7, wherein, The mounting assembly further comprises a light shield cover, the light shield cover covers the outer periphery of the light source and the first camera, and the side close to the circuit board of the light shield cover has an opening for the light source to irradiate the circuit board and for the first camera to shoot the circuit board. And / or, the camera mechanism further comprises a second camera, the second camera is arranged along the first direction and is spaced from the first camera, the second camera is located outside the light shield cover, and the second camera is used for positioning the circuit board.

9. The circuit board optical inspection apparatus of any one of claims 1 to 8, wherein, The circuit board optical detection equipment further comprises a second driving module, the measuring table comprises a plurality of clamping portions arranged along the first direction, and the placing area is surrounded between adjacent two clamping portions, and the second driving module is drivingly connected with the plurality of clamping portions to adjust the area range of the placing area.

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