PCB feeding detection device

Abstract

The utility model relates to a PCB feeding detection device, which comprises a feeding conveying belt, a feeding transfer unit, a conveying part, an upper lighting unit, a lower lighting unit, an upper detection camera and a lower detection camera, and is characterized in that the feeding transfer unit is used for transferring PCBs on the feeding conveying belt to the conveying part; the upper detection camera is arranged above the conveying part, and the lower detection camera is arranged below the conveying part; the upper lighting unit comprises an upper light supplementing light source, and the upper light supplementing light source is used for lighting the upper detection camera; the lower lighting unit comprises a driving assembly and a lower light supplementing light source, and the driving assembly is connected with the lower light supplementing light source and used for driving the lower light supplementing light source to move in the vertical direction. According to the device provided by the utility model, the driving assembly is arranged, so that the lower light supplementing light source can be adjusted according to the thicknesses of different PCBs, the clearness of images acquired by the camera is ensured, and the detection rate of defects of the PCBs is increased; and the feeding conveying belt, the feeding transfer unit and the conveying component are arranged, so that the feeding efficiency is improved.

Description

Technical Field

[0001] The utility model relates to a PCB board material detection device. Background Art

[0002] When inspecting PCB boards, the conventional practice is to place the light source in the middle and fix it in a relative position. The problem is that when inspecting PCB boards of different thicknesses, many real defects are difficult to detect. How to maximize the detection of real defects is an urgent problem to be solved. Utility Model Content

[0003] The utility model aims to provide a PCB board material detection device.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A PCB board loading inspection device comprises a loading conveyor belt, a loading transfer unit, a conveying component, an upper lighting unit, a lower lighting unit, an upper detection camera, and a lower detection camera, wherein the loading conveyor belt is located upstream of the conveying component, and the loading transfer unit is used to transfer the PCB board on the loading conveyor belt to the conveying component;

[0006] The upper detection camera is arranged above the conveying component, and the lower detection camera is arranged below the conveying component;

[0007] The upper lighting unit includes an upper fill light source, and the upper fill light source is used to illuminate the upper detection camera; the lower lighting unit includes a driving component and a lower fill light source, and the driving component is connected to the lower fill light source to drive the lower fill light source to move in a vertical direction, and the lower fill light source is used to illuminate the lower detection camera.

[0008] In some embodiments, the driving assembly includes a driving motor, a screw rod, and a connecting piece. The screw rod moves in a vertical direction, the driving motor is transmission-connected to the screw rod, the connecting piece is sleeved on the screw rod, and the lower fill light source is connected to the connecting piece.

[0009] In some embodiments, the connecting member includes a first connecting plate and two second connecting plates, the first connecting plate is sleeved on the screw rod, the two second connecting plates are respectively arranged at opposite ends of the first connecting plate, and the lower fill light source is connected to both of the second connecting plates.

[0010] In some embodiments, the device further comprises a detection bracket, the detection bracket comprises fixed plates located on both sides of the conveying component, a support plate connected between the two fixed plates, and the driving motor is connected to the support plate.

[0011] In some embodiments, the device further comprises a guide rail extending in a vertical direction, the guide rail being disposed on the fixing plate, and the second connecting plate being slidably disposed on the guide rail.

[0012] In some embodiments, the lower fill light source includes a lower frame and a light-emitting element arranged in the lower frame, the lower frame is connected to the connecting piece, the lower frame is in a cube shape, and the upper and lower sides of the lower frame are provided with openings; the upper fill light source includes an upper frame and a light-emitting element arranged in the upper frame, the upper frame is in a cube shape, and the upper and lower sides of the upper frame are provided with openings.

[0013] In some embodiments, the device further comprises a connecting rod and a sensing component, wherein the connecting rod is connected between the two fixing plates, and the sensing component is connected to the connecting rod.

[0014] In some embodiments, the device also includes a blocking unit, the blocking unit is located above the conveying component, the blocking unit includes a blocking drive and a baffle, the blocking drive is arranged on the support plate, the blocking drive is connected to the baffle to drive the baffle to move in a vertical direction; the baffle is located on the front side of the lower fill light source.

[0015] In some embodiments, the baffle includes a first plate and a second plate, the first plate is connected to the blocking drive member, and the second plate is connected to the first plate and is located at the lower side of the first plate; the device also includes a guide rod, the guide rod extends in a vertical direction, one end of the guide rod is arranged on the support plate, and the other end of the guide rod passes through the first plate.

[0016] In some embodiments, the device further includes a dust removal mechanism, wherein the dust removal mechanism is disposed above the conveying component, and the dust removal mechanism includes a first dust removal roller and a second dust removal roller located above the first dust removal roller.

[0017] In some embodiments, the device further comprises a partition, a material unloading conveyor belt, and a material unloading removal unit, a placement area for placing the PCB board is formed on the material unloading conveyor belt, the partition is arranged on the material unloading conveyor belt, and the partition can separate the placement area on the material unloading conveyor belt into a first placement area and a second placement area;

[0018] The unloading conveyor belt is located downstream of the conveying component, and the unloading and removing unit is used to transfer the PCB board on the conveying component to the unloading conveyor belt.

[0019] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0020] The PCB board feeding detection device provided by the utility model can adjust the lower fill light source according to the thickness of different PCB boards by setting a driving component, thereby ensuring the clarity of the image collected by the lower detection camera and increasing the detection rate of PCB board defects; and improves the feeding efficiency by setting a feeding conveyor belt, a feeding transfer unit and a conveying component. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Attached Figure 1 A structural diagram of a PCB board material detection device provided by the utility model from a first perspective;

[0022] Attached Figure 2 A structural diagram of the PCB board material detection device provided by the utility model from a second perspective;

[0023] Attached Figure 3 A top view of the PCB board material detection device provided by the utility model;

[0024] Attached Figure 4 A side view of the PCB board material detection device provided by the utility model;

[0025] Attached Figure 5 A structural diagram of the lower lighting unit and the blocking unit of the PCB board material detection device provided by the utility model from a first perspective;

[0026] Attached Figure 6 A structural diagram of the lower lighting unit and the blocking unit of the PCB board material detection device provided by the utility model from a second viewing angle;

[0027] Attached Figure 7 This is a structural diagram of the upper lighting unit, the lower lighting unit and the blocking unit of the PCB board material detection device provided by the utility model.

[0028] In the above attached figure:

[0029] 1-Feeding conveyor belt;

[0030] 2-loading transfer unit, 21-first slide rail, 22-first slide block, 23-first suction cup, 24-partition plate;

[0031] 3-lower lighting unit, 31-lower frame, 32-driving motor, 33-screw rod, 34-first connecting plate, 35-second connecting plate, 36-third connecting plate;

[0032] 4- conveying components;

[0033] 5-connecting rod; 6-sensing component;

[0034] 7-blocking unit, 71-blocking driving member, 72-first plate, 73-second plate, 74-guide rod, 75-cover;

[0035] 8-first dust removal roller; 9-second dust removal roller; 10-unloading conveyor belt;

[0036] 11- material unloading and transferring unit, 111- second slide rail, 112- second slide block;

[0037] 12-upper frame; 13-upper detection camera; 14-lower detection camera; 15-3D warping detection camera; 16-fixing plate; 17-support plate; 18-guide rail. DETAILED DESCRIPTION

[0038] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0039] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0040] See also Figures 1 to 7 The PCB board material detection device shown in the figure includes a loading conveyor belt 1, a loading transfer unit 2, a conveying component 4, an upper lighting unit, a lower lighting unit 3, an upper detection camera 13, a lower detection camera 14, a unloading conveyor belt 10, and an unloading transfer unit, wherein:

[0041] The loading conveyor belt 1 is located upstream of the conveying component 4, and the unloading conveyor belt 10 is located downstream of the conveying component 4, that is, the loading conveyor belt 1 and the unloading conveyor belt 10 are both located at the left end and the right end of the same side of the conveying component 4. The loading transfer unit 2 is used to transfer the PCB board to the conveying component 4. A placement area for placing the PCB board is formed on the loading conveyor belt 1. The partition 24 is arranged on the loading conveyor belt 1, and the partition 24 can separate the placement area on the loading conveyor belt 1 into a first placement area and a second placement area. The first placement area and the second placement area are used to place PCB boards of different specifications, which can increase the loading speed.

[0042] In this example, the partition 24 can be inserted on a workbench where the feeding conveyor belt 1 is placed. If a groove for placing the partition 24 is provided on the workbench, the operation is simple and convenient.

[0043] The loading and transferring unit 2 is used to transfer the PCB board on the loading conveyor belt 1 to the conveying component 4, see Figure 1-4 The loading and transferring unit 2 includes a first slide rail 21, a first slider 22 slidably arranged on the slide rail, and a first suction cup 23 structure connected to the first slider 22. The first suction cup 23 is used to absorb the PCB board on the loading conveyor belt 1, and then move along the first slide rail 21 to the conveying component 4. The first suction cup 23 is released and then moves to the top of the loading conveyor belt 1 to repeat the above work.

[0044] The unloading conveyor belt 10 is located downstream of the conveying component 4. The unloading removal unit is used to transfer the PCB board on the conveying component 4 to the unloading conveyor belt 10. A placement area for placing the PCB board is formed on the unloading conveyor belt 10. The device can also be provided with a partition 24, which is arranged on the unloading conveyor belt 10, and the partition 24 can separate the placement area on the unloading conveyor belt 10 into a first placement area and a second placement area. The first placement area and the second placement area are used to place PCB boards of different specifications, which can increase the loading speed.

[0045] The unloading transfer unit 11 is used to transfer the PCB board on the conveying component 4 to the unloading conveyor belt 10. The unloading transfer unit 11 includes a second slide rail 111, a second slider 112 slidably arranged on the second slide rail 111, and a second suction cup structure connected to the second slider 112. The second suction cup is used to absorb the PCB board on the conveying component 4, and then move along the second slide rail 111 to the top of the unloading conveyor belt 10. The second suction cup is then released, and the PCB board remains on the unloading conveyor belt 10. Then it moves to the top of the conveying component 4 to repeat the above work.

[0046] The conveying component 4 is used to convey the PCB board, and the conveying component 4 extends in the horizontal direction, such as the X-axis direction; a loading station, a detection station, and an unloading station are formed on the conveying component 4, and the loading station, the detection station, and the unloading station are arranged in sequence along the conveying direction. The loading station is close to the loading conveyor belt 1, the unloading station is close to the unloading conveyor belt 10, and the detection station is located between the loading station and the unloading station.

[0047] The lower lighting unit 3 is arranged above the conveying component 4. The lower lighting unit 3 includes a driving component and a lower fill light source. The driving component is connected to the lower fill light source to drive the lower fill light source to move in the vertical direction. The PCB board is located on the conveying component 4, and the lower fill light source is located above the PCB board. By setting the driving component, the lower fill light source can be adjusted according to the thickness of different PCB boards to ensure the detection accuracy, and many real defects can be easily detected.

[0048] The upper detection camera 13 is arranged above the conveying component 4 and is used to collect images of the upper surface of the PCB board; the lower detection camera 14 is arranged below the conveying component 4 and is used to collect images of the lower surface of the PCB board.

[0049] In one embodiment, the driving assembly includes a driving motor 32, a screw rod 33, and a connecting piece. The screw rod 33 moves in a vertical direction. The driving motor 32 is connected to the screw rod 33 in a transmission manner. The connecting piece is sleeved on the screw rod 33. The lower fill light source is connected to the connecting piece. The motor can adopt a high-torque motor to ensure the stability of the up and down movement of the fill light source under the tray and the accuracy of the position.

[0050] The conveying component 4 of this example includes a first conveyor belt and a second conveyor belt, the first conveyor belt and the second conveyor belt are arranged in a straight line, and a gap is maintained between the first conveyor belt and the second conveyor belt. The upper fill light source and the lower fill light source are located in the space between the first conveyor belt and the second conveyor belt, the lower fill light source is close to the loading station, and the upper fill light source is close to the unloading station.

[0051] In this example, the lower fill light source includes a lower frame 31 and a light-emitting element (such as a lamp) arranged in the lower frame 31. The lower frame 31 is connected to the connecting piece. The lower frame 31 is in a cube shape. The upper and lower sides of the lower frame 31 are provided with openings, and the openings allow the lower detection camera 14 to perform projection and collection.

[0052] The upper fill light source includes an upper frame 12 and a light emitting element arranged in the upper frame 12. The upper frame 12 is in a cube shape. The upper and lower sides of the upper frame 12 are provided with openings that are interlinked, and the openings allow the upper detection camera 13 to perform projection and collection.

[0053] To ensure the stability of the drive assembly, the device also includes a detection bracket, which includes a fixed plate 16 located on both sides of the conveying component 4, and a support plate 17 connected between the two fixed plates 16. The drive motor 32 is connected to the support plate 17, and the extension direction of the support plate 17 is perpendicular to the extension direction of the conveying component 4.

[0054] To ensure the stability of the movement of the lower fill light source, the connecting member includes a first connecting plate 34 and two second connecting plates 35. The first connecting plate 34 is sleeved on the screw rod 33. The first connecting plate 34 is parallel to the support plate 17. The extension direction of the first connecting plate 34 is perpendicular to the extension direction of the conveying component 4. The two second connecting plates 35 are respectively arranged at the opposite ends of the first connecting plate 34, and the lower fill light source is connected to both second connecting plates 35.

[0055] Furthermore, the device also includes a third connecting plate 36, which is connected to the support plate 17, and a first protrusion is provided on the same side of the third connecting plate 36, and a through hole is provided on the first protrusion for fixing the screw rod 33 away from one end of the driving motor 32; the device may also include a second protrusion, and the second protrusion and the first protrusion are located on the same side of the third connecting plate 36, and a through hole is provided on the second protrusion for fixing the screw rod 33 to pass through, so as to improve the overall stability and prevent the screw rod 33 from shifting.

[0056] The device further includes a guide rail 18, which extends in a vertical direction and is disposed on the fixing plate 16. The second connecting plate 35 is slidably disposed on the guide rail 18. The guide rail 18 is disposed to ensure the stability of the movement of the lower fill light source and prevent deviation. Two guide rails 18 can be disposed, and the two guide rails 18 are disposed on two second connecting plates 35 respectively.

[0057] The device also includes a blocking unit 7, which is located above the conveying component 4. The blocking unit 7 includes a blocking driving member 71 and a baffle. The blocking driving member 71 is arranged on the support plate 17. The blocking driving member 71 is connected to the baffle and is used to drive the baffle to move in the vertical direction. The baffle is located on the front side of the lower fill light source. When the PCB board on the conveying component 4 has not been moved to the unloading conveyor belt, and the loading conveyor belt 1 has moved the PCB board to the conveying component 4, the blocking driving member 71 drives the baffle to move downward and abut against the PCB board to limit the movement of the PCB board. When the PCB board is movable, the blocking driving member 71 drives the baffle to move upward, and the PCB board continues to move.

[0058] The baffle plate includes a first plate 72 and a second plate 73, wherein the first plate 72 is connected to the blocking driving member 71, and the second plate 73 is connected to the first plate 72 and is located at the lower side of the first plate 72. The device also includes a guide rod 74, which extends in the vertical direction, one end of which is arranged on the support plate 17, and the other end of which passes through the first plate 72, and the arrangement of the guide rod 74 is conducive to the stability of the baffle plate in the up and down directions.

[0059] The device further comprises a cover 75, which shields the support plate 17, a baffle, the lower fill light source, the blocking driving member 71, and the driving assembly.

[0060] The device also includes a connecting rod 5 and a sensor component 6. The connecting rod 5 is connected between two fixed plates 16. The sensor component 6 is connected to the connecting rod 5. The connecting rod 5 and the sensor component 6 are both located on the front side of the baffle. The sensor component 6 is used to sense the PCB board. According to the detection of the sensor component 6, the driving of the baffle by the blocking driving member 71 can be controlled.

[0061] In a preferred embodiment, two blocking units 7 are provided, namely a first blocking unit and a second blocking unit, and the two blocking units 7 are arranged in front and behind along the conveying direction of the conveying component 4, the first blocking unit is close to the loading conveyor belt 1, and the second blocking unit is close to the unloading conveyor belt, and a gap is maintained between the two blocking units. Correspondingly, two sensing components 6 are provided, and the two sensing components 6 correspond to the first blocking unit and the second blocking unit one by one.

[0062] Since the transporting speed of the loading and moving unit is greater than the flow rate of the conveying component 4, when the loading and moving unit picks up the product and places it on the conveying component 4, and when the loading and moving unit returns to pick up the product again, the product placed on the conveying component 4 for the first time has not yet reached the unloading station of the conveying component 4 for unloading. If the loading and moving unit then repeats the unloading action at this time, when a certain cycle is accumulated, the problem of stacking will occur, so the role of the blocking unit 7 is reflected at this time.

[0063] When encountering a PCB board with a larger shape, the baffle of the first blocking unit is set to be in a normally open state (not blocking the PCB board), and the baffle of the second blocking unit is in an open or closed state; when encountering a PCB board with a smaller size, the PCB board is located between the baffle of the first blocking unit and the baffle of the second blocking unit, and is blocked by the two baffles.

[0064] All products in this example will be inspected at the inspection station (the inspection station is located below the upper inspection camera 13). When the inspection time is longer than the product circulation time, the baffles of the first blocking unit and the second blocking unit will be used to pre-cache the products. When the camera inspection position completes the inspection of the product and the product is conveyed, the baffle of the second blocking unit will open immediately to release a piece of product to flow to the camera inspection position. At the same time, the baffle of the first blocking unit will also open to flow the product to the baffle of the second blocking unit to continue caching the product for testing. This double-stop design can cache the product in advance at the first blocking unit and / or the second blocking unit stop, reduce the distance of the product flow to the camera inspection position, and ensure the maximization of the test capacity.

[0065] See also Figure 1-2In one embodiment, the device also includes a dust removal mechanism, which is arranged above the conveying component 4. The dust removal mechanism includes a first dust removal roller 8 and a second dust removal roller 9 located above the first dust removal roller 8. It will remove some dirt, dust and other foreign objects that affect the detection performance on the upper and lower surfaces of the PCB board to be tested, thereby reducing the false detection rate.

[0066] In one embodiment, the device further includes a 3D warpage detection camera 15, which can accurately detect the warpage of the PCB surface, thereby further improving the detection accuracy.

[0067] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with the technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A PCB board material detection device, characterized in that: It includes a loading conveyor belt, a loading transfer unit, a conveying component, an upper lighting unit, a lower lighting unit, an upper detection camera, and a lower detection camera. The loading conveyor belt is located upstream of the conveying component. The loading transfer unit is used to transfer the PCB board on the loading conveyor belt to the conveying component. The upper detection camera is arranged above the conveying component, and the lower detection camera is arranged below the conveying component; The upper lighting unit includes an upper fill light source, and the upper fill light source is used to illuminate the upper detection camera; the lower lighting unit includes a driving component and a lower fill light source, and the driving component is connected to the lower fill light source to drive the lower fill light source to move in a vertical direction, and the lower fill light source is used to illuminate the lower detection camera.

2. The PCB board material detection device according to claim 1 is characterized in that: The driving assembly comprises a driving motor, a screw rod and a connecting piece. The screw rod moves in a vertical direction. The driving motor is drivingly connected to the screw rod. The connecting piece is sleeved on the screw rod. The lower fill light source is connected to the connecting piece.

3. The PCB board material detection device according to claim 2 is characterized in that: The connecting member includes a first connecting plate and two second connecting plates. The first connecting plate is sleeved on the screw rod. The two second connecting plates are respectively arranged at opposite ends of the first connecting plate. The lower fill light source is connected to both of the second connecting plates.

4. The PCB board material detection device according to claim 3 is characterized in that: The device also includes a detection bracket, which includes fixed plates located on both sides of the conveying component and a support plate connected between the two fixed plates. The driving motor is connected to the support plate.

5. The PCB board material detection device according to claim 4, characterized in that: The device also includes a guide rail extending in a vertical direction, the guide rail is arranged on the fixing plate, and the second connecting plate is slidably arranged on the guide rail.

6. The PCB board material detection device according to claim 3 is characterized in that: The lower fill light source comprises a lower frame, and a light emitting element arranged in the lower frame. The lower frame is connected to the connecting member. The lower frame is in a cube shape, and openings are provided on the upper side and the lower side of the lower frame. The upper fill light source comprises an upper frame and a light emitting element arranged in the upper frame. The upper frame is in a cube shape, and openings are provided on the upper side and the lower side of the upper frame.

7. The PCB board material detection device according to claim 4, characterized in that: The device also includes a blocking unit, which is located above the conveying component. The blocking unit includes a blocking driving member and a baffle. The blocking driving member is arranged on the support plate, and the blocking driving member is connected to the baffle to drive the baffle to move in a vertical direction; the baffle is located in front of the lower fill light source.

8. The PCB board material detection device according to claim 7, characterized in that: The baffle plate includes a first plate and a second plate, the first plate is connected to the blocking drive member, and the second plate is connected to the first plate and is located at the lower side of the first plate; the device also includes a guide rod, the guide rod extends in a vertical direction, one end of the guide rod is arranged on the support plate, and the other end of the guide rod passes through the first plate.

9. The PCB board material detection device according to claim 1, characterized in that: The device also includes a dust removal mechanism, which is arranged above the conveying component and includes a first dust removal roller and a second dust removal roller located above the first dust removal roller.

10. The PCB board material detection device according to claim 9, characterized in that: The device further comprises a partition, a material unloading conveyor belt, and a material unloading removal unit. A placement area for placing PCB boards is formed on the material unloading conveyor belt. The partition is arranged on the material unloading conveyor belt, and the partition can separate the placement area on the material unloading conveyor belt into a first placement area and a second placement area. The unloading conveyor belt is located downstream of the conveying component, and the unloading and removing unit is used to transfer the PCB board on the conveying component to the unloading conveyor belt.

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