Online PCBA paster automatic optical detection equipment

Abstract

The utility model discloses on-line PCBA paster automatic optical detection equipment which comprises a base, a platform and a scanner. The platform comprises a plurality of deformation plate sets, each deformation plate set comprises a middle batten, the middle battens are fixedly connected with the base, the two side edges of each middle batten are connected with side battens, and a plurality of patch positioning grooves are formed in the middle battens in the length direction of the middle battens at equal intervals; the ends, in the length direction, of the side battens are connected with driving parts, and the driving parts are used for synchronously driving the multiple side battens to rotate around the connecting positions of the side battens and the middle batten. By controlling the rotation sequence of the side battens on the two sides of the middle batten, the patches in the patch positioning grooves are turned over, and the side edges of the patches face the scanner. According to the utility model, automatic optical detection of batch PCBA patches can be realized, and angle adjustment can be carried out on the batch PCBA patches, so that pin ends of the patches can be exposed under a camera scanner at multiple angles, and the automatic optical detection efficiency of the PCBA patches can be effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of PCBA chip mounting, and particularly relates to an online PCBA chip mounting automatic optical detection device. Background Art

[0002] Automatic optical detection is a device that detects common defects encountered in welding production based on optical principles. AOI is a newly emerging new testing technology, but it has developed rapidly, and many manufacturers have launched AOI testing equipment. When automatically detecting, the machine automatically scans the PCB through a camera, collects images, compares the tested solder joints with the qualified parameters in the database, and through image processing, checks for defects on the PCB and displays / marks the defects through a display or an automatic marker for maintenance personnel to repair. The detection of SMT includes AOI, ICT, and FCT. By automatically optically inspecting the welding, input signals are provided to the components on the circuit board, the detection output signals are designed, and various defect faults in the SMT assembly process are found.

[0003] In the automatic optical detection of PCBA, usually only a single PCBA chip can be detected through a clamping device, with low detection efficiency. Moreover, the soldering pins are easily blocked during the clamping process, and the smaller the size of the chip, the worse the detection effect. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an online PCBA chip mounting automatic optical detection device to solve the technical problem in the prior art that in the automatic optical detection of PCBA, usually only a single PCBA chip can be detected through a clamping device, with low detection efficiency, and the soldering pins are easily blocked during the clamping process, and the smaller the size of the chip, the worse the detection effect.

[0005] To solve the above technical problem, the utility model specifically provides the following technical solutions:

[0006] An online PCBA chip mounting automatic optical detection device includes a base and a platform disposed on the base, and a scanner is disposed above the platform;

[0007] The platform includes a plurality of deformation plate groups, the plurality of deformation plate groups are arranged at equal intervals, the deformation plate group includes a middle strip plate, the middle strip plate is fixedly connected to the base, both sides of the middle strip plate are connected with side strip plates, and the side strip plates are rotatably connected to the middle strip plate; a plurality of chip mounting positioning grooves are arranged at equal intervals along the length direction of the middle strip plate on the middle strip plate;

[0008] The end of the side strip plate in the length direction is connected with a driving part, and the driving part is used to synchronously drive the plurality of side strip plates to rotate around the connection part of the side strip plate and the middle strip plate;

[0009] Among them, by controlling the rotation sequence of the side plates on both sides of the middle strip plate, the patch in the patch positioning groove is flipped, so that the side of the patch faces the scanner.

[0010] As a preferred solution of the present utility model, side positioning grooves are provided on the side plates on both sides of the middle strip plate, and are mirror-symmetrical. The side positioning grooves extend along the width direction of the side plates, and the depth increases in the direction away from the middle strip plate.

[0011] As a preferred solution of the present utility model, the driving part includes a linkage rod. One ends of multiple side plates are connected to the linkage rod at equal intervals. A fixed seat is provided on the side of the platform. At least two arc-shaped guide grooves are provided on the surface of the fixed seat facing the platform, and the arc-shaped guide grooves are centered on the width of the side plate; a protrusion matching with the arc-shaped guide groove is provided on the surface of the linkage rod facing the fixed seat, and the linkage rod is installed on the fixed seat through the cooperation of the protrusion and the arc-shaped guide groove; a steering gear is provided at one end of the linkage rod, and the steering gear is movably connected to one end of the linkage rod through a transmission member;

[0012] Among them, the steering gear drives the transmission member to rotate, so that the linkage rod moves under the guidance of the protrusion along the arc-shaped guide groove, and synchronously drives multiple side plates to rotate.

[0013] As a preferred solution of the present utility model, the connection part between the side plate (32) and the middle strip plate (31) is an outwardly convex arc surface.

[0014] The present utility model has the following beneficial effects compared with the prior art:

[0015] The present utility model can realize the automatic optical detection of batch PCBA patches, and can adjust the angles of batch PCBA patches, so that the pin ends of the patches can be exposed under the camera scanner at multiple angles, and sufficient image acquisition and detection can be carried out on the pin parts of the patches. Moreover, through the angle flipping method, the clamping of the patches can be avoided, and the damage caused during the clamping process of the patches can be avoided, thereby effectively improving the automatic optical detection efficiency of PCBA patches. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only exemplary, and for those of ordinary skill in the art, other implementation drawings can be obtained according to the provided drawings without creative efforts.

[0017] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0018] Figure 2 It is a schematic diagram of the structure of the base part of an embodiment of the present utility model;

[0019] Figure 3 of an embodiment of the present utility model Figure 2 The enlarged overall structure schematic diagram of part A therein;

[0020] Figure 4 It is a schematic diagram of the connection structure of the linkage rod and the transmission part of an embodiment of the present utility model.

[0021] The reference numerals in the figure respectively represent as follows:

[0022] 1 - base; 2 - platform; 3 - deformation plate group; 4 - driving part; 5 - scanner;

[0023] 31 - middle strip board; 32 - side strip board; 33 - side positioning groove; 34 - patch positioning groove;

[0024] 41 - linkage rod; 42 - fixed seat; 43 - arc-shaped guide groove; 44 - protrusion; 45 - servo motor; 46 - transmission part. Specific implementation manner

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0026] As Figures 1 to 4 shown, the present utility model provides an online PCBA patch automatic optical detection device, including a base 1 and a platform 2 arranged on the base 1, and a scanner is arranged above the platform 2.

[0027] The platform 2 includes a plurality of deformation plate groups 3, the plurality of deformation plate groups 3 are arranged at equal intervals, the deformation plate group 3 includes a middle strip board 31, the middle strip board 31 is fixedly connected to the base 1, both sides of the middle strip board 31 are connected with side strip boards 32, and the side strip boards 32 are rotatably connected to the middle strip board 31. A plurality of patch positioning grooves 34 are arranged at equal intervals along the length direction of the middle strip board 31 on the middle strip board 31.

[0028] The end of the side strip board 32 in the length direction is connected with a driving part 4, and the driving part 4 is used to synchronously drive the plurality of side strip boards 32 to rotate around the connection part of the side strip board 32 and the middle strip board 31.

[0029] Among them, by controlling the rotation sequence of the side plates 32 on both sides of the middle plate 31, the patch in the patch positioning groove 34 is flipped so that the side of the patch faces the scanner.

[0030] The multiple deformation plate groups 3 provided in this embodiment and the multiple patch positioning grooves 34 provided on the deformation plate groups 3 enable this embodiment to realize the automatic optical inspection of batch PCBA patches. Among them, the scanner 5 specifically uses an existing image acquisition camera or a CCD camera. The input of the detected image and the output of the result are not the design focus of this embodiment, and this embodiment does not make too many designs and can use the existing technology.

[0031] However, for batch PCBA patches, the scanner 5 in this embodiment can collect images in the form of an array of multiple camera scanners.

[0032] The purpose of the rotation of the side plates 32 on both sides of the middle plate 31 in this embodiment is to realize the flipping of the state of the patch chip so that the part with pins can be directly exposed on the image acquisition plane of the scanner 5. The main designed image acquisition states of the patch include:

[0033] The patch is placed horizontally in the patch positioning groove 34, and the scanner 5 performs surface image acquisition on the patch chip.

[0034] The patch is clamped by the states after the rotation of the two side plates 32, so as to perform image acquisition on the part where the pins are connected to the chip body.

[0035] Therefore, in this embodiment, by driving the two side plates 32 to rotate through the driving part 4, the angles of batch PCBA patches can be adjusted, so that the pin ends of the patches can be exposed at multiple angles under the camera scanner, and sufficient image acquisition and detection can be performed on the pin parts of the patches.

[0036] Of course, generally, both sides of the patch chip have pins. Therefore, in this embodiment, the position change of the pins on both sides can also be realized, that is, the pins of the patch chip corresponding to the side plate 32 that rotates first face upward after the rotation of the two side plates 32 is completed.

[0037] However, when the two side plates 32 return to the horizontal state, the patch chip needs to return to the initial state. Then, the side plate 32 that rotates first needs to rotate to the horizontal state later.

[0038] The same principle applies to the flipping of the pin side on the other side of the patch chip.

[0039] By means of the angular flipping of the patch chip, it is possible to avoid the clamping of the patch, which causes damage during the patch clamping process and occlusion of the image acquisition at the position where the patch chip needs to be detected, thereby effectively improving the automatic optical inspection efficiency of PCBA patching.

[0040] Furthermore, in this embodiment, side positioning grooves 33 are provided on the side strips 32 on both sides of the middle strip 31, and they are mirror-symmetrical. The side positioning grooves 33 extend along the width direction of the side strips 32 and increase in depth in the direction away from the middle strip 31. The purpose is to facilitate the bottom of the patch chip to be on an inclined plane after the side strip 32 is flipped, so as to facilitate its sliding back to the initial state.

[0041] Of course, the longitudinal section of the side positioning groove 33 in this embodiment has an obtuse triangle structure, that is, the side of the side positioning groove 33 away from the middle strip 31 is also an inclined plane.

[0042] Furthermore, in this embodiment, a driving part 4 is provided, which includes a linkage rod 41. One ends of a plurality of side strips 32 are connected to the linkage rod 41 at equal intervals. A fixed seat 42 is provided on the side of the platform 2. At least two arc-shaped guide grooves 43 are provided on the surface of the fixed seat 42 facing the platform 2, and the arc-shaped guide grooves 43 have the width of the side strip 32 as the radius. A protrusion 44 that cooperates with the arc-shaped guide groove 43 is provided on the surface of the linkage rod 41 facing the fixed seat 42. The linkage rod 41 is installed on the fixed seat 42 through the cooperation of the protrusion 44 and the arc-shaped guide groove 43. A servo motor 45 is provided at one end of the linkage rod 41, and the servo motor 45 is movably connected to one end of the linkage rod 41 through a transmission member 46.

[0043] Among them, the servo motor 45 drives the transmission member 46 to rotate, so that the linkage rod 41 moves under the guidance of the protrusion 44 along the arc-shaped guide groove 43, synchronously driving a plurality of side strips 32 to rotate.

[0044] Among them, the driving parts 4 of the side strips 32 on both sides of the middle strip 31 are respectively located on the fixed seats 42 on both sides of the platform 2.

[0045] In this embodiment, the connection between the side strip 32 and the middle strip 31 is a convex arc surface. When the two side strips 32 rotate, the patch in the patch positioning groove 34 is clamped by the two side strips 32 in a vertical state. When the side strips 32 return to the horizontal state, the cooperation of the two side strips 32 is required. Then, after ensuring that the patch is rotated, it can still accurately enter the side positioning groove 33 and the patch positioning groove 34.

[0046] Then the bottom of the patch after being rotated has a tendency to slide into the corresponding patch positioning groove 34 on the side. This requires the connection between the side strip 32 and the middle strip 31 to be smooth and have a certain tendency to prevent the bottom of the patch from sliding towards the middle strip 31, so as to avoid the side of the bottom of the patch from crossing the patch positioning groove 34 on the middle strip 31. During the process of the side strip 32 returning to the horizontal state, a 360° flip is formed.

[0047] To avoid this situation, the connection between the side strip 32 and the middle strip 31 is made into a convex arc surface (the connection between the two). In this way, when the side of the patch during the rotation of the side strip 32 approaches the convex arc surface, it is blocked by the convex arc surface. Of course, this means that when the patch is rotated to the vertical state by the two side strips 32, it is not clamped in a completely vertical state. Relative to the horizontal plane, it still has a certain inclination angle.

[0048] Furthermore, it should be supplemented that the sizes of the side strip 32 and the middle strip 31 need to be determined according to the size of the patch chip to be detected. That is, the middle strip 31 is slightly larger than the thickness of the patch, and the side strip 32 is slightly larger than half of the width of the patch chip of the patch (referring to the width between the two sides of the patch with pins).

[0049] The above embodiments are only exemplary embodiments of the present application and are not used to limit the present application. The protection scope of the present application is defined by the claims. Those skilled in the art can make various modifications or equivalent replacements within the essence and protection scope of the present application, and such modifications or equivalent replacements should also be regarded as falling within the protection scope of the present application.

Claims

1. An online PCBA patch automatic optical inspection equipment, characterized in that: It comprises a base (1) and a platform (2) arranged on the base (1), and a scanner (5) is arranged above the platform (2); The platform (2) comprises a plurality of deformable plate groups (3), the plurality of deformable plate groups (3) are arranged at equal intervals, the deformable plate groups (3) comprise a middle strip (31), the middle strip (31) is fixedly connected to the base (1), both sides of the middle strip (31) are connected to side strips (32), the side strips (32) are rotatably connected to the middle strip (31); a plurality of patch positioning grooves (34) are arranged at equal intervals on the middle strip (31) along the length direction of the middle strip (31); The end portions of the side strips (32) in the length direction are connected to a driving unit (4), and the driving unit (4) is used to synchronously drive the plurality of side strips (32) to rotate around the connection between the side strips (32) and the middle strip (31); By controlling the rotation sequence of the side strips (32) on both sides of the middle strip (31), the patch in the patch positioning groove (34) is turned over so that the side edge of the patch faces the scanner (5).

2. The online PCBA patch automatic optical inspection equipment according to claim 1, characterized in that: Side positioning grooves (33) are provided on the side strips (32) on both sides of the middle strip (31) and are mirror-symmetrical. The side positioning grooves (33) extend along the width direction of the side strips (32) and increase in depth in a direction away from the middle strip (31).

3. The online PCBA patch automatic optical inspection equipment according to claim 1, characterized in that: The driving part (4) comprises a linkage rod (41), one end of a plurality of the side strips (32) are connected to the linkage rod (41) at equal intervals, a fixing seat (42) is arranged on the side of the platform (2), at least two arc-shaped guide grooves (43) are arranged on the surface of the fixing seat (42) facing the platform (2), and the arc-shaped guide grooves (43) have a radius of the width of the side strips (32); a protrusion (44) matching with the arc-shaped guide groove (43) is arranged on the surface of the linkage rod (41) facing the fixing seat (42), and the linkage rod (41) is installed on the fixing seat (42) through the matching of the protrusion (44) and the arc-shaped guide groove (43); a steering gear (45) is arranged at one end of the linkage rod (41), and the steering gear (45) is movably connected to one end of the linkage rod (41) through a transmission member (46); The steering gear (45) drives the transmission member (46) to rotate, so that the linkage rod (41) moves downwardly along the arc-shaped guide groove (43) under the guidance of the protrusion (44), thereby synchronously driving the plurality of side strips (32) to rotate.

4. The online PCBA patch automatic optical inspection equipment according to claim 1, characterized in that: The connection between the side strip (32) and the middle strip (31) is in the form of an outwardly convex arc surface.

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