Detection device for PCB (Printed Circuit Board)

Abstract

The utility model discloses a detection device for a PCB. The detection device comprises a rack, a rotating disc is rotatably arranged on the rack, and a driving module is further arranged on the rack; detection camera obscura are arranged on the rotating disc around the axis of the rotating disc, and each detection camera obscura is provided with a limiting groove matched with a PCB to be detected; an illuminance sensor is further arranged in the detection camera obscura, a stand column and a controller are further arranged on the rack, an electric push rod is further arranged on the stand column, a lifting plate is arranged on the electric push rod, and a plurality of blocking rods are arranged on the lifting plate according to the positions and the apertures of all holes in the PCB to be detected; sorting mechanical arms are arranged at the inlet end and the outlet end of the stand column in the rotating direction of the rotating disc. The controller is arranged on the rack and electrically connected with the driving module, the illuminance sensor, the electric push rod and the sorting manipulators. Compared with the prior art, automatic continuous detection of the PCB is realized, so that the detection efficiency and the detection precision of the PCB are improved as much as possible.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of PCB production detection equipment, in particular to a detection device for PCB. BACKGROUND

[0002] In the production process of PCB, drilling is an important process. After drilling, the hole needs to be detected. The existing technology generally uses manual detection tools for manual detection. However, manual detection not only has low detection accuracy, but also requires frequent disassembly and movement of the PCB, which not only has high labor intensity, but also has low detection efficiency. CONTENT OF THE UTILITY MODEL

[0003] The main purpose of the present application is to provide a detection device for PCB, which aims to solve the problem of low drilling detection efficiency in the prior art.

[0004] The present application achieves the above-mentioned purpose by the following technical solutions:

[0005] A detection device for PCB, comprising a rack;

[0006] A rotating disc is rotationally arranged on the rack, and a driving module is arranged on the rack and connected in power with the rotating disc. Around the axis of the rotating disc, detection boxes are arranged on the rotating disc, and each detection box is provided with a limiting groove matched with the PCB to be detected;

[0007] An illuminance sensor is arranged in the detection box;

[0008] A stand is arranged on the rack, and an electric push rod is arranged on the stand. The electric push rod is provided with a lifting plate, and a plurality of plugging rods are arranged on the lifting plate according to the positions and diameters of the holes on the PCB to be detected. Around the rotating direction of the rotating disc, the inlet end and the outlet end of the stand are provided with sorting mechanical hands;

[0009] A controller is arranged on the rack, and the controller is respectively connected in power with the driving module, the illuminance sensor, the electric push rod and each sorting mechanical hand.

[0010] Optionally, an annular slide rail is arranged on the rack, and a plurality of sliding blocks are arranged on the annular slide rail. Each sliding block is connected with the rotating disc. A driving shaft is further arranged on the rotating disc, and the driving module comprises a driving motor. The driving motor is connected in power with the driving shaft through intermeshing bevel gears.

[0011] Optionally, the detection dark box is provided with a support ring, and the limiting groove is arranged on the support ring, and a silica gel strip is further arranged at the bottom of the limiting groove.

[0012] Optionally, the bottom surface of the support ring is further provided with a plug-in groove, and the plug-in groove is connected to the detection dark box in plug-in mode.

[0013] Optionally, the detection dark box is further provided with a first connecting head electrically connected to the light intensity sensor, and a second connecting head is arranged on the rack, and when the first connecting head and the second connecting head are engaged with each other, the detection dark box is located directly below the lifting plate.

[0014] Optionally, a slot type photoelectric sensor is further arranged on the stand, and a baffle that is adapted to the slot type photoelectric sensor is arranged on the lifting plate.

[0015] Optionally, a plurality of connecting heads are arranged on the lifting plate, each of the plugging rods is connected to each of the connecting heads in screw thread mode, and each of the plugging rods is arranged in a conical structure.

[0016] Optionally, a strong light lamp that faces the to-be-detected PCB is further arranged on the bottom surface of the lifting plate, and the strong light lamp is electrically connected to the controller.

[0017] Optionally, a pressure sensor is further arranged between the lifting plate and the electric push rod, and the pressure sensor is electrically connected to the controller.

[0018] Optionally, the controller comprises an industrial computer and a PLC, and the industrial computer is electrically connected to the PLC.

[0019] Compared with the prior art, the application has the following beneficial effects:

[0020] The application comprises a rack, a rotating disc is rotatably arranged on the rack, a driving module that is dynamically connected to the rotating disc is further arranged on the rack, a detection dark box is arranged on the rotating disc around the axis of the rotating disc, a limiting groove that is adapted to a to-be-detected PCB is arranged on each of the detection dark boxes, a light intensity sensor is further arranged in each of the detection dark boxes, a stand and a controller are further arranged on the rack, an electric push rod is further arranged on the stand, a lifting plate is arranged on the electric push rod, a plurality of plugging rods are arranged on the lifting plate according to the positions and diameters of holes on the to-be-detected PCB, an inlet end and an outlet end of the stand are both provided with sorting mechanical hands in the rotating direction of the rotating disc, the controller is arranged on the rack, and the controller is electrically connected to the driving module, the light intensity sensor, the electric push rod and each of the sorting mechanical hands.

[0021] In use, the rotating disc is controlled to rotate by the driving module, and stops (such as 120°) when it rotates to a certain angle, then the sorting mechanical hand at the entrance end picks up the PCB to be detected and places it into the limiting groove, then the rotating disc continues to rotate into the area where the lifting plate is located, and finally the PCB to be detected is stopped right below the lifting plate, then the electric push rod controls the lifting plate to descend, and each plugging rod is inserted into each hollow, when the lifting plate descends to the detection point, the light intensity sensor is used to measure the light intensity parameter in the detection dark box; when the actual light intensity parameter detected exceeds a certain threshold value, it can be determined that one or several hollows of the PCB to be detected are not completely closed by the plugging rod, that is, the hollow of the PCB has a machining error, otherwise, it is determined that the PCB is machined to be qualified, then the rotating disc is controlled to rotate again, and the sorting mechanical hand at the exit end sorts the PCB after detection to different areas, so as to complete the detection of the PCB.

[0022] Compared with the pure manual detection method in the prior art, the automatic continuous detection of the PCB is realized, so that the detection efficiency of the PCB is improved as much as possible.

[0023] Secondly, compared with the detection method of manual observation, the application realizes the rapid judgment of the size of the hollow through the plugging rod and the light detection method, which not only has high detection efficiency, but also has a simpler whole device, and does not need complex control degree, improves the reliability of the equipment, and improves the detection precision of the hollow. BRIEF DESCRIPTION OF DRAWINGS

[0024] Fig. 1 A structural schematic view of a detection device for a PCB provided by the embodiment 1 of the application;

[0025] Fig. 2 An exploded view of a detection device for a PCB provided by the embodiment 1 of the application;

[0026] Fig. 3 A sectional view of a detection device for a PCB provided by the embodiment 1 of the application;

[0027] Fig. 1 is a machine frame, Fig. 2 is a rotating disc, Fig. 3 is a detection dark box, Fig. 4 is a limiting groove, Fig. 5 is a light intensity sensor, Fig. 6 is a stand column, Fig. 7 is an electric push rod, Fig. 8 is a lifting plate, Fig. 9 is a plugging rod, Fig. 10 is a sorting mechanical hand, Fig. 11 is a controller, Fig. 12 is a ring-shaped sliding rail, Fig. 13 is a sliding block, Fig. 14 is a driving shaft, Fig. 15 is a driving motor, Fig. 16 is a support ring, Fig. 17 is a silica gel strip, Fig. 18 is a plug-in groove, Fig. 19 is a first connecting head, Fig. 20 is a second connecting head, Fig. 21 is a slot-shaped photoelectric sensor, Fig. 22 is a baffle, Fig. 23 is a connecting head, Fig. 24 is a strong light lamp, and Fig. 25 is a pressure sensor.

[0028] The objectives, functional features and advantages of the present application will be further described with reference to the embodiments in combination with the accompanying drawings. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be apparently and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0030] It should be noted that all the directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between the components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directional indications also change accordingly.

[0031] In the present application, unless otherwise explicitly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense, for example, "fixation" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be direct connection, or indirect connection through an intermediate medium; can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0032] In addition, if the present application embodiments involve "first", "second", etc. description, the "first", "second", etc. description 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 with "first", "second" can explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel solutions. Taking "A and / or B" as an example, it includes A solution, or B solution, or A and B solutions. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of those skilled in the art, and 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.

[0033] Embodiment 1

[0034] Reference Figs. 1 to 3The embodiment discloses a detection device for a PCB, which comprises a rack 1, a circular hole is arranged at the center of the rack 1, a supporting plate is further arranged below the circular hole, a plurality of hangers are arranged on the supporting plate around the axis of the supporting plate, and each hanger is connected with the rack 1.

[0035] An annular slide rail 12 is further arranged on the side of the supporting plate opposite to the rack 1, the annular slide rail 12 is coaxially arranged with the supporting plate, a plurality of sliding blocks 13 are arranged on the annular slide rail 12, and a driving module is arranged on the side of the supporting plate opposite to the rack 1.

[0036] The detection device further comprises a rotating disc 2, the rotating disc 2 comprises a disc body and a driving shaft 14, one end of the driving shaft 14 is coaxially and integrally connected with the disc body, the other end of the driving shaft 14 is provided with a bevel gear, the two bevel gears are meshed with each other, the rotating disc 2 is controlled to rotate through the driving motor 15, and preferably, the driving motor 15 is a servo motor.

[0037] The bottom surface of the disc body is further connected with each sliding block 13.

[0038] Through the above arrangement, the rotation control of the rotating disc 2 is realized, the annular slide rail 12 and the sliding block 13 can reduce the rotation wear of the rotating disc 2 and effectively improve the stability of the rotating disc 2, and the stable operation of the equipment is ensured.

[0039] A plurality of detection dark boxes 3 are further arranged on the top surface of the rotating disc 2 around the axis of the rotating disc 2, the detection dark boxes 3 are all cuboid box bodies, only the top surface is open, and the other surfaces are closed to realize light shielding, preferably, the number of the detection dark boxes 3 is the same as the number of the work stations, that is, three work stations of feeding, detection and discharging are arranged in the technical scheme, and three detection dark boxes 3 are arranged, if other work stations are increased, the corresponding number of detection dark boxes 3 is increased, and the rotation angle of the rotating disc 2 is adjusted correspondingly.

[0040] The top opening area of each detection installation is provided with a supporting ring 16, the bottom surface of the supporting plate is provided with a plug-in groove 18, the plug-in groove 18 is connected with the detection dark box 3 in a plug-in mode, so that the stability and connection accuracy are improved, a limiting groove 4 is arranged on the top of the supporting ring 16, the limiting groove 4 has the same outer structure as the PCB to be detected, and a silica gel strip 17 is arranged at the bottom of the limiting groove 4, preferably a black silica gel strip 17, so that the light shielding property is improved.

[0041] For different structures of the PCB to be detected, different support rings 16 can be replaced to meet the use requirements, thereby improving the use range of the equipment as much as possible, and through the elastic deformation capacity of the silica gel strip 17, the gap of the connection area can also be effectively blocked, thereby improving the detection accuracy; photoelectric sensors are arranged in each detection dark box 3;

[0042] Further, around the rotation direction of the rotating disc 2, an feeding station, a detection station and a discharging station are sequentially arranged on the top of the rack 1, wherein sorting mechanical hands 10 are arranged in the feeding station and the discharging station, and a vertical column 6 is arranged in the detection station, the vertical column 6 is in L-shaped structure, and the horizontal end of the vertical column 6 extends to the rotating disc 2 in the radial direction of the rotating disc 2;

[0043] Meanwhile, an electric push rod 7 is arranged on the horizontal end of the vertical column 6, the execution end of the electric push rod 7 is further connected with a lifting plate 8, the lifting plate 8 is in long strip plate structure, a plurality of connecting heads 23 are arranged on the bottom surface of the lifting plate 8, the point arrangement of each connecting head 23 is the same as the hole arrangement of the PCB to be detected, that is, each connecting head 23 corresponds to each hole on the PCB to be detected one by one, and the corresponding connecting head 23 and the hole are coaxial, a sealing rod 9 is screw connected to each connecting head 23, the size specification of each sealing rod 9 is matched with the inner diameter of the hole, and the sealing rod 9 is coaxial with the hole;

[0044] The sealing rod 9 comprises a connecting section and a detection section which are connected integrally, wherein the connecting section is screw connected with the connecting head 23, and the detection section is in conical structure;

[0045] Through the above structure, on the one hand, different sealing rods 9 can be conveniently replaced, and the equipment can be conveniently maintained and repaired; on the other hand, the conical structure can prevent the sealing rod 9 from colliding with the PCB to be detected, thereby damaging the PCB to be detected;

[0046] Secondly, the sealing rod 9 in cylindrical structure can be adjusted to the detection end position by controlling the height of the lifting plate 8, and the detection end position can be adjusted to the position where the sealing rod 9 is flush with the hole, that is, the outer diameter of the actual sealing area of the sealing rod 9 is adjusted, thereby meeting different detection requirements;

[0047] Further, a strong light lamp 24 is arranged on the bottom surface of the lifting plate 8 and faces the PCB to be detected, the detection device further comprises a controller 11, the controller 11 is arranged on the rack 1, the controller 11 comprises an industrial computer and a PLC, the industrial computer is electrically connected with the PLC, and the strong light lamp 24 is electrically connected with the PLC;

[0048] Further, a slot photoelectric sensor 21 is arranged on the column 6, and a baffle 22 adapted to the slot photoelectric sensor 21 is arranged on the lifting plate 8. The slot photoelectric sensor 21 is electrically connected to the PLC, and the position of the lifting plate 8 can be accurately controlled by the baffle 22 and the slot photoelectric sensor 21, which is conducive to improving the detection accuracy and avoiding excessive extrusion of the sealing rod 9 on the PCB to be detected due to excessive lowering of the lifting plate 8, thereby improving the protection of the PCB to be detected.

[0049] Further, a pressure sensor 25 is arranged on the top surface of the lifting plate 8, and the top surface of the pressure sensor 25 is connected to the electric push rod 7. The pressure sensor 25 is electrically connected to the PLC.

[0050] The pressure sensor 25 can clearly sense the change in pressure of the lifting plate 8 after contacting the PCB to be detected. On the one hand, the pressure can be accurately controlled to avoid damaging the PCB, and on the other hand, the PCB to be detected can be pressed as much as possible to extrude the silica gel strip 17, thereby sealing the top of the detection dark box 3 and improving the detection accuracy.

[0051] On the other hand, if the inner diameter of part of the holes is too small, the pressure value of the entire lifting plate 8 will abnormally increase before reaching the specified point. At this time, the electric push rod 7 can be controlled to stop, thereby protecting the PCB to be detected and quickly determining that the inner diameter of a hole is too small, and the PCB is unqualified.

[0052] Further, a first connecting head 19 is arranged on the detection dark box 3, and the first connecting head 19 is electrically connected to the light intensity sensor 5. A second connecting head 20 is also arranged on the detection station, and the output end of the second connecting head 20 is electrically connected to the PLC. When the detection dark box 3 rotates to the detection station, the first connecting head 19 and the second connecting head 20 are connected, thereby connecting the light intensity sensor 5 and the controller 11, and realizing the collection and uploading of the light intensity parameter.

[0053] When the application is used, the rotating disc is controlled to rotate by the driving module, and stops (such as 120°) when it rotates to a certain angle, then the sorting mechanical arm at the entrance end grabs and places the PCB to be detected into the limiting groove, then the rotating disc continues to rotate into the area where the lifting plate is located, and finally the PCB to be detected is stopped right below the lifting plate, then the electric push rod controls the lifting plate to descend, and each plugging rod is inserted into each hollow, when the lifting plate descends to the detection point, the light intensity sensor is used to measure the light intensity parameter in the detection dark box; when the actual light intensity parameter detected exceeds a certain threshold value, it can be determined that one or several hollows of the PCB to be detected are not completely closed by the plugging rod, that is, the hollow of the PCB has a machining error, otherwise it is determined that the PCB is machined qualified, then the rotating disc is controlled to rotate again, and the sorting mechanical arm at the exit end sorts the PCB after detection to different areas, so as to complete the detection of the PCB.

[0054] Compared with the pure manual detection method in the prior art, the application realizes automatic continuous detection of the PCB, thereby improving the detection efficiency of the PCB as much as possible.

[0055] Secondly, compared with the detection method of manual observation, the application realizes rapid judgment of the size of the hollow by the plugging rod and light detection method, which not only has high detection efficiency, but also has a simpler whole device, and does not need complex control degree, improves the reliability of the equipment, and improves the detection precision of the hollow.

[0056] The above is only a preferred embodiment of the application, and does not limit the patent scope of the application, and any equivalent structure or equivalent process transformation using the content of the specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the application.

Claims

1. An inspection apparatus for PCB boards, characterized in that, Including frame (1); Rotary disc (2), the rotary disc (2) is rotationally arranged on the frame (1), the frame (1) is also provided with drive module connected with the rotary disc (2) power;Around the axis of the rotary disc (2), detection dark box (3) is arranged on the rotary disc (2), each detection dark box (3) is provided with limiting slot (4) matched with the PCB to be detected; Illuminance sensor (5), the illuminance sensor (5) is arranged in the detection dark box (3); Stand column (6), the stand column (6) is arranged on the frame (1), the stand column (6) is also provided with electric push rod (7), the electric push rod (7) is provided with lifting plate (8), according to the position and aperture of each hole on the PCB to be detected, a plurality of sealing rods (9) are arranged on the lifting plate (8);Around the rotary direction of the rotary disc (2), the inlet end and the outlet end of the stand column (6) are provided with sorting mechanical hand (10); Controller (11), the controller (11) is arranged on the frame (1), the controller (11) is respectively connected with the drive module, illuminance sensor (5), electric push rod (7) and each sorting mechanical hand (10) power.

2. The detection device for PCB board according to claim 1, characterized in that, The frame (1) is provided with annular slide rail (12), a plurality of sliding blocks (13) are arranged on the annular slide rail (12), each sliding block (13) is connected with the rotary disc (2) respectively;The rotary disc (2) is also provided with driving shaft (14), the drive module includes driving motor (15), the driving motor (15) and the driving shaft (14) are connected by intermeshing bevel gear power.

3. The detection device for PCB board according to claim 1, characterized in that, The detection dark box (3) is provided with support ring (16), the limiting slot (4) is arranged on the support ring (16), the limiting slot (4) bottom is also provided with silica gel strip (17).

4. The detection device for PCB board according to claim 3, characterized in that, The bottom surface of the support ring (16) is also provided with plug-in slot (18), the plug-in slot (18) is connected with the detection dark box (3) plug-in.

5. The detection device for PCB board according to claim 1, characterized in that, The detection dark box (3) is also provided with first connecting head (19) connected with the illuminance sensor (5) power, the frame (1) is provided with second connecting head (20), when the first connecting head (19) and the second connecting head (20) are mutually occluded, the detection dark box (3) is located directly below the lifting plate (8).

6. The detection device for PCB board according to claim 1, wherein, The stand column (6) is also provided with slot type photoelectric sensor (21), the lifting plate (8) is provided with baffle (22) matched with the slot type photoelectric sensor (21).

7. The detection device for PCB board according to claim 1, wherein, The lifting plate (8) is provided with a plurality of connecting heads (23), each sealing rod (9) is connected with each connecting head (23) screw thread respectively;Each sealing rod (9) is arranged in a conical structure.

8. The detection device for PCB board according to claim 1, wherein, The bottom surface of the lifting plate (8) is also provided with strong light lamp (24) facing the PCB to be detected, the strong light lamp (24) is connected with the controller (11) power.

9. The detection device for PCB board according to claim 1, wherein, A pressure sensor (25) is further arranged between the lifting plate (8) and the electric push rod (7), and the pressure sensor (25) is electrically connected with the controller (11).

10. The detection device for PCB board according to claim 1, characterized in that, The controller (11) comprises an industrial computer and a PLC, and the industrial computer is electrically connected with the PLC.

Images